Interface Cache
-
- All Known Implementing Classes:
SimpleCache
@Deprecated public interface Cache
Deprecated.com.google.android.exoplayer2 is deprecated. Please migrate to androidx.media3 (which contains the same ExoPlayer code). See the migration guide for more details, including a script to help with the migration.A cache that supports partial caching of resources.Terminology
- A resource is a complete piece of logical data, for example a complete media file.
- A cache key uniquely identifies a resource. URIs are often suitable for use as cache keys, however this is not always the case. URIs are not suitable when caching resources obtained from a service that generates multiple URIs for the same underlying resource, for example because the service uses expiring URIs as a form of access control.
- A cache span is a byte range within a resource, which may or may not be cached. A cache span that's not cached is called a hole span. A cache span that is cached corresponds to a single underlying file in the cache.
-
-
Nested Class Summary
Nested Classes Modifier and Type Interface Description static class
Cache.CacheException
Deprecated.Thrown when an error is encountered when writing data.static interface
Cache.Listener
Deprecated.Listener ofCache
events.
-
Method Summary
All Methods Instance Methods Abstract Methods Deprecated Methods Modifier and Type Method Description NavigableSet<CacheSpan>
addListener(String key, Cache.Listener listener)
Deprecated.Registers a listener to listen for changes to a given resource.void
applyContentMetadataMutations(String key, ContentMetadataMutations mutations)
Deprecated.Appliesmutations
to theContentMetadata
for the given resource.void
commitFile(File file, long length)
Deprecated.Commits a file into the cache.long
getCachedBytes(String key, long position, long length)
Deprecated.Returns the total number of cached bytes betweenposition
(inclusive) and(position + length)
(exclusive) of a resource.long
getCachedLength(String key, long position, long length)
Deprecated.Returns the length of continuously cached data starting fromposition
, up to a maximum ofmaxLength
, of a resource.NavigableSet<CacheSpan>
getCachedSpans(String key)
Deprecated.Returns the cached spans for a given resource.long
getCacheSpace()
Deprecated.Returns the total disk space in bytes used by the cache.ContentMetadata
getContentMetadata(String key)
Deprecated.Returns aContentMetadata
for the given resource.Set<String>
getKeys()
Deprecated.Returns the cache keys of all of the resources that are at least partially cached.long
getUid()
Deprecated.Returns a non-negative unique identifier for the cache, orUID_UNSET
if initialization failed before the unique identifier was determined.boolean
isCached(String key, long position, long length)
Deprecated.Returns whether the specified range of data in a resource is fully cached.void
release()
Deprecated.Releases the cache.void
releaseHoleSpan(CacheSpan holeSpan)
Deprecated.Releases aCacheSpan
obtained fromstartReadWrite(String, long, long)
which corresponded to a hole in the cache.void
removeListener(String key, Cache.Listener listener)
Deprecated.Unregisters a listener.void
removeResource(String key)
Deprecated.Removes allCacheSpans
for a resource, deleting the underlying files.void
removeSpan(CacheSpan span)
Deprecated.Removes a cachedCacheSpan
from the cache, deleting the underlying file.File
startFile(String key, long position, long length)
Deprecated.Obtains a cache file into which data can be written.CacheSpan
startReadWrite(String key, long position, long length)
Deprecated.A caller should invoke this method when they require data starting from a given position in a given resource.CacheSpan
startReadWriteNonBlocking(String key, long position, long length)
Deprecated.Same asstartReadWrite(String, long, long)
.
-
-
-
Field Detail
-
UID_UNSET
static final long UID_UNSET
Deprecated.Returned bygetUid()
if initialization failed before the unique identifier was read or generated.- See Also:
- Constant Field Values
-
-
Method Detail
-
getUid
long getUid()
Deprecated.Returns a non-negative unique identifier for the cache, orUID_UNSET
if initialization failed before the unique identifier was determined.Implementations are expected to generate and store the unique identifier alongside the cached content. If the location of the cache is deleted or swapped, it is expected that a new unique identifier will be generated when the cache is recreated.
-
release
@WorkerThread void release()
Deprecated.Releases the cache. This method must be called when the cache is no longer required. The cache must not be used after calling this method.This method may be slow and shouldn't normally be called on the main thread.
-
addListener
NavigableSet<CacheSpan> addListener(String key, Cache.Listener listener)
Deprecated.Registers a listener to listen for changes to a given resource.No guarantees are made about the thread or threads on which the listener is called, but it is guaranteed that listener methods will be called in a serial fashion (i.e. one at a time) and in the same order as events occurred.
- Parameters:
key
- The cache key of the resource.listener
- The listener to add.- Returns:
- The current spans for the resource.
-
removeListener
void removeListener(String key, Cache.Listener listener)
Deprecated.Unregisters a listener.- Parameters:
key
- The cache key of the resource.listener
- The listener to remove.
-
getCachedSpans
NavigableSet<CacheSpan> getCachedSpans(String key)
Deprecated.Returns the cached spans for a given resource.- Parameters:
key
- The cache key of the resource.- Returns:
- The spans for the key.
-
getKeys
Set<String> getKeys()
Deprecated.Returns the cache keys of all of the resources that are at least partially cached.
-
getCacheSpace
long getCacheSpace()
Deprecated.Returns the total disk space in bytes used by the cache.
-
startReadWrite
@WorkerThread CacheSpan startReadWrite(String key, long position, long length) throws InterruptedException, Cache.CacheException
Deprecated.A caller should invoke this method when they require data starting from a given position in a given resource.If there is a cache entry that overlaps the position, then the returned
CacheSpan
defines the file in which the data is stored.CacheSpan.isCached
is true. The caller may read from the cache file, but does not acquire any locks.If there is no cache entry overlapping
position
, then the returnedCacheSpan
defines a hole in the cache starting atposition
into which the caller may write as it obtains the data from some other source. The returnedCacheSpan
serves as a lock. Whilst the caller holds the lock it may write data into the hole. It may split data into multiple files. When the caller has finished writing a file it should commit it to the cache by callingcommitFile(File, long)
. When the caller has finished writing, it must release the lock by callingreleaseHoleSpan(com.google.android.exoplayer2.upstream.cache.CacheSpan)
.This method may be slow and shouldn't normally be called on the main thread.
- Parameters:
key
- The cache key of the resource.position
- The starting position in the resource from which data is required.length
- The length of the data being requested, orC.LENGTH_UNSET
if unbounded. The length is ignored if there is a cache entry that overlaps the position. Else, it defines the maximum length of the holeCacheSpan
that's returned. Cache implementations may support parallel writes into non-overlapping holes, and so passing the actual required length should be preferred to passingC.LENGTH_UNSET
when possible.- Returns:
- The
CacheSpan
. - Throws:
InterruptedException
- If the thread was interrupted.Cache.CacheException
- If an error is encountered.
-
startReadWriteNonBlocking
@WorkerThread @Nullable CacheSpan startReadWriteNonBlocking(String key, long position, long length) throws Cache.CacheException
Deprecated.Same asstartReadWrite(String, long, long)
. However, if the cache entry is locked, then instead of blocking, this method will return null as theCacheSpan
.This method may be slow and shouldn't normally be called on the main thread.
- Parameters:
key
- The cache key of the resource.position
- The starting position in the resource from which data is required.length
- The length of the data being requested, orC.LENGTH_UNSET
if unbounded. The length is ignored if there is a cache entry that overlaps the position. Else, it defines the range of data locked by the returnedCacheSpan
.- Returns:
- The
CacheSpan
. Or null if the cache entry is locked. - Throws:
Cache.CacheException
- If an error is encountered.
-
startFile
@WorkerThread File startFile(String key, long position, long length) throws Cache.CacheException
Deprecated.Obtains a cache file into which data can be written. Must only be called when holding a corresponding holeCacheSpan
obtained fromstartReadWrite(String, long, long)
.This method may be slow and shouldn't normally be called on the main thread.
- Parameters:
key
- The cache key of the resource being written.position
- The starting position in the resource from which data will be written.length
- The length of the data being written, orC.LENGTH_UNSET
if unknown. Used only to ensure that there is enough space in the cache.- Returns:
- The file into which data should be written.
- Throws:
Cache.CacheException
- If an error is encountered.
-
commitFile
@WorkerThread void commitFile(File file, long length) throws Cache.CacheException
Deprecated.Commits a file into the cache. Must only be called when holding a corresponding holeCacheSpan
obtained fromstartReadWrite(String, long, long)
.This method may be slow and shouldn't normally be called on the main thread.
- Parameters:
file
- A newly written cache file.length
- The length of the newly written cache file in bytes.- Throws:
Cache.CacheException
- If an error is encountered.
-
releaseHoleSpan
void releaseHoleSpan(CacheSpan holeSpan)
Deprecated.Releases aCacheSpan
obtained fromstartReadWrite(String, long, long)
which corresponded to a hole in the cache.- Parameters:
holeSpan
- TheCacheSpan
being released.
-
removeResource
@WorkerThread void removeResource(String key)
Deprecated.Removes allCacheSpans
for a resource, deleting the underlying files.- Parameters:
key
- The cache key of the resource being removed.
-
removeSpan
@WorkerThread void removeSpan(CacheSpan span)
Deprecated.Removes a cachedCacheSpan
from the cache, deleting the underlying file.This method may be slow and shouldn't normally be called on the main thread.
- Parameters:
span
- TheCacheSpan
to remove.
-
isCached
boolean isCached(String key, long position, long length)
Deprecated.Returns whether the specified range of data in a resource is fully cached.- Parameters:
key
- The cache key of the resource.position
- The starting position of the data in the resource.length
- The length of the data.- Returns:
- true if the data is available in the Cache otherwise false;
-
getCachedLength
long getCachedLength(String key, long position, long length)
Deprecated.Returns the length of continuously cached data starting fromposition
, up to a maximum ofmaxLength
, of a resource. Ifposition
isn't cached then-holeLength
is returned, whereholeLength
is the length of continuously uncached data starting fromposition
, up to a maximum ofmaxLength
.- Parameters:
key
- The cache key of the resource.position
- The starting position of the data in the resource.length
- The maximum length of the data or hole to be returned.C.LENGTH_UNSET
is permitted, and is equivalent to passingLong.MAX_VALUE
.- Returns:
- The length of the continuously cached data, or
-holeLength
ifposition
isn't cached.
-
getCachedBytes
long getCachedBytes(String key, long position, long length)
Deprecated.Returns the total number of cached bytes betweenposition
(inclusive) and(position + length)
(exclusive) of a resource.- Parameters:
key
- The cache key of the resource.position
- The starting position of the data in the resource.length
- The length of the data to check.C.LENGTH_UNSET
is permitted, and is equivalent to passingLong.MAX_VALUE
.- Returns:
- The total number of cached bytes.
-
applyContentMetadataMutations
@WorkerThread void applyContentMetadataMutations(String key, ContentMetadataMutations mutations) throws Cache.CacheException
Deprecated.Appliesmutations
to theContentMetadata
for the given resource. A newCachedContent
is added if there isn't one already for the resource.This method may be slow and shouldn't normally be called on the main thread.
- Parameters:
key
- The cache key of the resource.mutations
- Contains mutations to be applied to the metadata.- Throws:
Cache.CacheException
- If an error is encountered.
-
getContentMetadata
ContentMetadata getContentMetadata(String key)
Deprecated.Returns aContentMetadata
for the given resource.- Parameters:
key
- The cache key of the resource.- Returns:
- The
ContentMetadata
for the resource.
-
-


--- layout: post status: publish published: true title: 26 hours, 6 photos author: display_name: Kurt login: Kurt email<EMAIL_ADDRESS>url: '' author_login: Kurt author_email<EMAIL_ADDRESS>wordpress_id: 4120 wordpress_url: http://ivyenvy.com/?p=4120 date: '2011-03-20 11:34:22 +0000' date_gmt: '2011-03-20 16:34:22 +0000' categories: - Uncategorized tags: [] comments: [] ---
[caption id="attachment_4126" align="alignleft" width="300" caption="The view from the back seat"][/caption]
[caption id="attachment_4135" align="alignleft" width="300" caption="White Knuckles"][/caption]
[caption id="attachment_4134" align="alignleft" width="300" caption="The Cooler"][/caption]
[caption id="attachment_4133" align="alignleft" width="200" caption="Emporiums and Car Magnets"][/caption]
[caption id="attachment_4131" align="alignleft" width="300" caption="YES"][/caption]
[caption id="attachment_4132" align="alignleft" width="300" caption="Inside the Emporium"][/caption]


Maluleka Leads List Of 10 Players Who Could Become Hot Property In January
by Soccer LadumaThere is just over one month left before the new year and Soccer Laduma takes a look at up to 10 players who could be hot property in January, with their contracts approaching the last six months.
Several players in the Premier Soccer League will be eligible to put pen to paper on a pre-contract elsewhere come January next year and possibly leave their current clubs on a free at the end of the season.
Read more: Sandilands: Micho Is A Character You Can’t Replace
George Maluleka in particular has long been linked with a new contract at Naturena, although as things stand, the player will be free to put pen to paper with any interested suitor once January arrives, with the midfielder having recently been linked with a move to Mamelodi Sundowns.
Also at Naturena, the likes of Joseph Malongoane, Willard Katsande and Daniel Akpeyi will also enter the final six months of their contracts and it remains to be seen whether Amakhosi will offer the duo a new contract before interested suitors make an approach.
Elsewhere in the Absa Premiership, Maritzburg United’s Siyanda Xulu is yet to sign a new contract at the club, although sources have revealed that the player is eyeing a move abroad.
At Mamelodi Sundowns, Oupa Manyisa, Soumahoro Bangaly and Anele Ngcongca are some of the players at the club who will enter the final six months of their deals in January and as things stand, indications are that Ngcongca is the player who is likely to sign a new deal at the club before looking elsewhere.
Clayton Daniels at SuperSport United and Siphelele Mthembu at Cape Town City are also amongst the many players in PSL who will be eligible to sign a pre-contracts elsewhere in January and it remains to be seen what the upcoming transfer window will entail.
Click through the gallery to view 10 players who will enter the final six months of their contracts
Earn Airtime & Data With Soccer Laduma’s Social Media App - Download Now


--- layout: post status: publish published: true title: Fixing Sleep in Ubuntu 7.10 author: display_name: Tomas Restrepo login: tomasr email<EMAIL_ADDRESS>url: http://winterdom.com/ author_login: tomasr author_email<EMAIL_ADDRESS>author_url: http://winterdom.com/ wordpress_id: 223 wordpress_url: http://winterdom.com/2007/10/fixingsleepinubuntu710 date: '2007-10-23 07:28:27 +0000' date_gmt: '2007-10-23 07:28:27 +0000' categories: - Personal - Linux tags: [] comments: - id: 165 author: alex author_email: '' author_url: '' date: '2007-11-01 15:41:10 +0000' date_gmt: '2007-11-01 15:41:10 +0000' content: | Very Cool! totally worked on my d620. thanks! - id: 166 author: ilmassi author_email: '' author_url: '' date: '2007-12-03 00:11:57 +0000' date_gmt: '2007-12-03 00:11:57 +0000' content: | it works on my dell d620 nvidia! some issues on resume but works! thanks ---
As I mentioned in a previous post, I did a successful upgrade of my Inspiron 6000 laptop over to Ubuntu 7.10 (Gutsy Gibbon) from 7.04 (Feisty Fawn), though sleep/hibernate wasn't working. I spent a some time yesterday trying to fix it, with some partial success.
Niels Olson was kind enough to comment on my post and mentioned some directions that worked for him on his Latidude laptop. I tried some of those, but they didn't work for me, as my laptop has an ATI X300 card instead of an NVidia. However, it gave me some good ideas to play with.
In the end, I wasn't able to get sleep working with the restricted/proprietary ATI drivers (fxglr) so I reverted back to the initial open source Radeon driver. That way I was able to get sleep working back, though the machine still wouldn't come out of sleep successfully (it just locked up).
Finally, I was able to work around this by tweaking a few parameters in /etc/default/acpi-support:
SAVE_VBE_STATE=false
POST_VIDEO=false
SAVE_VIDEO_PCI_STATE=false
USE_DPMS=true
This works, though the video takes a bit of a long time to reestablish once the machine comes up from sleep, but at least it works ;-).


With data from the rovers, mission scientists have reconstructed an ancient past when Mars was awash in water. Spirit and Opportunity each found evidence for past wet conditions that possibly could have supported microbial life.
First among the mission's scientific goals was to search for and characterize a wide range of rocks and soils for clues to past water activity on Mars. The rovers were targeted to sites on opposite sides of Mars that looked like they were affected by liquid water in the past.
Each rover was created to be the mechanical equivalent of a geologist walking from place to place. The mast-mounted cameras are 5 feet (1.5 meters) high and provide 360-degree two-eyed, humanlike views of the terrain. The robotic arm moves like a human arm with an elbow and wrist


--- layout: default title: Home ---
Hi! My name is Hichem, I’m a Designer & Software Engineer from Dréan, Algeria and this is my personal playground. About Behance Twitter LinkedIn Research Gate
Hi! My name is Hichem, I’m a Designer & Software Engineer from Dréan, Algeria and this is my personal playground.
About Behance Twitter LinkedIn Research Gate


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{{run.Team.School.name}}
{{run.start | date:'d/M/yyyy, H:mm'}}
{{run.end | date:'d/M/yyyy, H:mm'}}
{{run.Field.number}}
{{run.Team.AgeRange.name}}


Introduction¶
iEVA is a python command line tool that expands the number of informative attributes that are not commonly provided by variant callers. It needs as input a .vcf
file from variant calling and generates as output a new vcf file enriched with all extracted information.
iEVA attributes are annotated in INFO and FORMAT field of vcf output file (see https://samtools.github.io/hts-specs/VCFv4.2.pdf for vcf specification). iEVA extracts information for variant in input vcf file from two different sources:
- Reference.fasta file. Nucleotide sequence composition around a called variant is extracted from the fasta reference file. The annotations are reported in vcf INFO field.
- BAM file. Information about reads mapping variant position, for sample in vcf input file, is extracted from bam file. The annotations are reported in vcf FORMAT field.
iEVA enriches vcf file with several attributes. With iEVA you can:
- Report the reference sequence quality in terms of G-C content, repeated sequences, pseudo nucleotide composition and more over.
- Report genotype information for samples in vcf file. You can extract, for each sample, useful information like fraction of unmapped reads, not paired reads, duplicate reads, etc…
- Report allele-specific information, by evaluating, for example, number of reads supporting reference or alternate allele given a specific mapping quality or base quality threshold. These attributes help to identify any bias affecting called variants.
Main advatages of iEVA are:
- Output file in a vcf format file. iEVA simply adds the extracted attributes, maintaining original tags in input vcf file.
- Extraction is independent of the variant caller used in variant calling analysis. To a proper usage of iEVA look at Usage and Prerequisites.
- iEVA is not a variant caller, for this reason is a safe-time approach. However, its computational time increases depending both on the number of requested sample for extraction, target length and mean target coverage.
See iEVA arguments for details about iEVA options and Tutorial and examples section.
One of the strengths of iEVA consists in its simplicity of integration in bioinformatics pipeline, as showed in this figure:


tsv - Part of the Tcl threading extension allowing script level manipulation of data shared between threads.
This section describes commands implementing thread shared variables. A thread shared variable is very similar to a Tcl array but in contrast to a Tcl array it is created in shared memory and can be accessed from many threads at the same time. Important feature of thread shared variable is that each access to the variable is internally protected by a mutex so script programmer does not have to take care about locking the variable himself.
Thread shared variables are not bound to any thread explicitly. That means that when a thread which created any of thread shared variables exits, the variable and associated memory is not unset/reclaimed. User has to explicitly unset the variable to reclaim the memory consumed by the variable.
Returns names of shared variables matching optional ?pattern? or all known variables if pattern is omitted.
Creates object accessor command for the element in the shared variable varname. Using this command, one can apply most of the other shared variable commands as method functions of the element object command. The object command is automatically deleted when the element which this command is pointing to is unset.
% tsv::set foo bar "A shared string" % set string [tsv::object foo bar] % $string append " appended" => A shared string appended
Sets the value of the element in the shared variable varname to value and returns the value to caller. The value may be omitted, in which case the command will return the current value of the element. If the element cannot be found, error is triggered.
Retrieves the value of the element from the shared variable varname. If the optional argument namedvar is given, the value is stored in the named variable. Return value of the command depends of the existence of the optional argument namedvar. If the argument is omitted and the requested element cannot be found in the shared array, the command triggers error. If, however, the optional argument is given on the command line, the command returns true (1) if the element is found or false (0) if the element is not found.
Unsets the element from the shared variable varname. If the optional element is not given, it deletes the variable.
Checks whether the element exists in the shared variable varname and returns true (1) if it does or false (0) if it doesn't.
Returns value of the element in the shared variable varname and unsets the element, all in one atomic operation.
Renames the element oldname to the newname in the shared variable varname. This effectively performs an get/unset/set sequence of operations but all in one atomic step.
Similar to standard Tcl incr command but increments the value of the element in shared variable varname instead of the Tcl variable.
Similar to standard Tcl append command but appends one or more values to the element in shared variable varname instead of the Tcl variable.
This command concatenates passed arguments and evaluates the resulting script under the internal mutex protection. During the script evaluation, the entire shared variable is locked. For shared variable commands within the script, internal locking is disabled so no deadlock can occur. It is also allowed to unset the shared variable from within the script. The shared variable is automatically created if it did not exists at the time of the first lock operation.
% tsv::lock foo { tsv::lappend foo bar 1 tsv::lappend foo bar 2 puts stderr [tsv::set foo bar] tsv::unset foo }
Returns the names of all persistent storage handlers enabled at compile time. See ARRAY COMMANDS for details.
Those command are similar to the equivalently named Tcl command. The difference is that they operate on elements of shared arrays.
Similar to standard Tcl lappend command but appends one or more values to the element in shared variable varname instead of the Tcl variable.
Similar to standard Tcl linsert command but inserts one or more values at the index list position in the element in the shared variable varname instead of the Tcl variable.
Similar to standard Tcl lreplace command but replaces one or more values between the first and last position in the element of the shared variable varname instead of the Tcl variable.
Similar to standard Tcl llength command but returns length of the element in the shared variable varname instead of the Tcl variable.
Similar to standard Tcl lindex command but returns the value at the index list position of the element from the shared variable varname instead of the Tcl variable.
Similar to standard Tcl lrange command but returns values between from and to list positions from the element in the shared variable varname instead of the Tcl variable.
Similar to standard Tcl lsearch command but searches the element in the shared variable varname instead of the Tcl variable.
Similar to standard Tcl lset command but sets the element in the shared variable varname instead of the Tcl variable.
Similar to the standard Tcl lindex command but in addition to returning, it also splices the value out of the element from the shared variable varname in one atomic operation. In contrast to the Tcl lindex command, this command returns no value to the caller.
This command performs the opposite of the tsv::lpop command. As its counterpart, it returns no value to the caller.
This command supports most of the options of the standard Tcl array command. In addition to those, it allows binding a shared variable to some persistent storage databases. Currently the persistent options supported are the famous GNU Gdbm and LMDB. These options have to be selected during the package compilation time. The implementation provides hooks for defining other persistency layers, if needed.
Does the same as standard Tcl array set.
Does the same as standard Tcl array get.
Does the same as standard Tcl array names.
Does the same as standard Tcl array size.
Does the same as standard Tcl array set but it clears the varname and sets new values from the list atomically.
Binds the varname to the persistent storage handle. The format of the handle is <handler>:<address>, where <handler> is "gdbm" for GNU Gdbm and "lmdb" for LMDB and <address> is the path to the database file.
Unbinds the shared array from its bound persistent storage.
Returns true (1) if the shared varname is bound to some persistent storage or zero (0) if not.
Keyed list commands are borrowed from the TclX package. Keyed lists provide a structured data type built upon standard Tcl lists. This is a functionality similar to structs in the C programming language.
A keyed list is a list in which each element contains a key and value pair. These element pairs are stored as lists themselves, where the key is the first element of the list, and the value is the second. The key-value pairs are referred to as fields. This is an example of a keyed list:
{{NAME {Frank Zappa}} {JOB {musician and composer}}}
Fields may contain subfields; `.' is the separator character. Subfields are actually fields where the value is another keyed list. Thus the following list has the top level fields ID and NAME, and subfields NAME.FIRST and NAME.LAST:
{ID 106} {NAME {{FIRST Frank} {LAST Zappa}}}
There is no limit to the recursive depth of subfields, allowing one to build complex data structures. Keyed lists are constructed and accessed via a number of commands. All keyed list management commands take the name of the variable containing the keyed list as an argument (i.e. passed by reference), rather than passing the list directly.
Delete the field specified by key from the keyed list keylist in the shared variable varname. This removes both the key and the value from the keyed list.
Return the value associated with key from the keyed list keylist in the shared variable varname. If the optional retvar is not specified, then the value will be returned as the result of the command. In this case, if key is not found in the list, an error will result.
If retvar is specified and key is in the list, then the value is returned in the variable retvar and the command returns 1 if the key was present within the list. If key isn't in the list, the command will return 0, and retvar will be left unchanged. If {} is specified for retvar, the value is not returned, allowing the Tcl programmer to determine if a key is present in a keyed list without setting a variable as a side-effect.
Return the a list of the keys in the keyed list keylist in the shared variable varname. If key is specified, then it is the name of a key field whose subfield keys are to be retrieved.
Set the value associated with key, in the keyed list keylist to value. If the keylist does not exists, it is created. If key is not currently in the list, it will be added. If it already exists, value replaces the existing value. Multiple keywords and values may be specified, if desired.
The current implementation of thread shared variables allows for easy and convenient access to data shared between different threads. Internally, the data is stored in Tcl objects and all package commands operate on internal data representation, thus minimizing shimmering and improving performance. Special care has been taken to assure that all object data is properly locked and deep-copied when moving objects between threads.
Due to the internal design of the Tcl core, there is no provision of full integration of shared variables within the Tcl syntax, unfortunately. All access to shared data must be performed with the supplied package commands. Also, variable traces are not supported. But even so, benefits of easy, simple and safe shared data manipulation outweighs imposed limitations.
Thread shared variables are inspired by the nsv interface found in AOLserver, a highly scalable Web server from America Online.
thread, tpool, ttrace
locking, synchronization, thread shared data, threads


About RACIS 2018
Welcome to the official website of the National Conference on Recent Advancements in Computing and Information Science 2018 (RACIS ’18) scheduled to be held at the Department of Computer Science and Engineering, NSS College of Engineering, Palakkad, Kerala on 19th and 20th of January 2018.
Computing in the most simplest of terms is the method of using computers to accomplish a task. The field of computing includes computer engineering, software engineering, computer science, information systems, and information technology. The field of information science brings together and uses the theories, principles, techniques and technologies of a variety of disciplines toward the solution of information problems. The objective of this national conference is to provide a forum for researchers, academicians, industry practitioners and students to interact, exchange and share their experiences, ideas and research results about all aspects in the field of computing and information science as well as to identify emerging research topics and define future directions in these fields.
About Computer Science & Engineering Department
The department of computer science & engineering is the latest addition to the Institution in the academic year 1999 - 2000. Identification of India as a potential source of computer professionals and keeping in mind the employment potential in this sector, the department aims at providing competent professionals to contribute its share to this technology boom. Faculty members and supporting staff with rich experience are appointed in the department.
About NSSCE
N S S College of Engineering, Palakkad is one of the most reputed, premier engineering educational Institution in Kerala. Founded in 1960 by Nair Service Society under the leadership of late Bharatha Kesari Mannathu Padmanabhan, during the second five year plan with the assistance of the Central and State Government under the grant-in-aid scheme, affiliated to the Kerala Technological University, the College has an enviable heritage and legacy of grooming brilliant engineering professionals who later made their mark in industrial and other sectors of the country and abroad.
Situated in NSS Nagar at Akathethara, 9 km from Palakkad town, the Campus is easily accessible, being only 4 km from the Palakkad Railway Junction, and is only 5 km from the renowned Malampuzha Gardens. Nearest Airports are at Coimbatore (55Kkm) and Cochin International (110 Km). Spread over 125 Acres, it includes an Administrative Block, Separate blocks for each Department, A Library block and four Hostels including one for Ladies. Nestling among verdant foothills, this is a tranquil and serene setting for higher education.


FIRST KNIGHT A film review by Ed Powell Copyright 1995 Ed Powell
First, go to your local library and check out LE MORTE D'ARTHUR. It's a long, boring read, but live with it.
Then completely forget about it and go see FIRST KNIGHT.
This film is an interesting twist on the Arthurian legends, and well worth the time to go see it. The story centers around two themes: first and foremost, the cat and mouse game that Launcelot (Richard Gere) and Guinevere (Julia Ormond) play. The second, to a lesser degree but serves its purpose of making the film exciting, is the desire of Prince Maligent (Ben Cross) to take over the kingdom of Camelot, ruled by (g'won ... have a guess) King Arthur (Sean Connery).
While the story is not completely true to the legends (at least the legends I have read), it is gripping and wonderful.
The dialogue and overall writing of the film was above average. The writers spared us the overload of sappy poetic speech: Shakespeare it ain't. From the dialogue, the audience gets a feel of how life really was back in those times. It did have its poetic lines, but it does not mar the film.
Acting wise, Sean Connery was excellent ... as ever. I cannot, however, figure out how or why the King of *England* had a SCOTTISH ACCENT!!! FROM PLAYING 15th CENTURY SPANIARDS TO RUSSIAN SUBMARINE COMMANDERS HE STILL HAS THE SAME ACCENT!!!
Where was I? Oh, yes. The rest of the cast played their roles with superior believability. The battle sequences were well thought out, and the warriors fought with realism.
The design of the film worked well. All the props, costumes, and architectural design were what was expected of that time period.
There were very few visual effects in this film. There were a few matte shots for the exterior of Camelot, and while they were stunning, you could tell that they were matte shots.
And we come to the direction of the film, which I can sum up in one word: EXCELLENT!!! Jerry Zucker made the battle sequences edge-of-your-seat thrilling, the end of the film emotional (I managed to blink back the tears ... no, I'm not a fem), and made me forget that I was in a cramped multiplex for two hours.
 This reviewer says: perhaps. This is not a picture for young children, but your teenagers might like it. No obscenities, but there are quite a few shots of villages being burnt and people being slain.
Overall, this film is one of the best I've seen this year. It well deserves being nominated for Best Picture this year. Go see this movie by yourself, or go see it with a date. But by any means ... GO SEE THIS FILM!!!
Produced by Jerry Zucker and Bill Nicholson, directed by Jerry Zucker. A Columbia Pictures release.
RATINGS (out of ten) -------------------- Plot/Story: 7 Writing: 8 Acting: 8 Design: 7 Effects: 5 Direction: 10 Family Value: 5
TOTAL: 50 out of 70 (Overall: 7.143)
The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
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Please direct comments/criticisms of the review to relevant newsgroups.
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Related links: index of all rec.arts.movies.reviews reviews


|
| def | __init__ (self, model, order_processes_initialization) |
| |
| def | Initialize (self, parameters) |
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| def | SaveInitialProblemFiles (self) |
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| def | UpdateModelPartNames (self, process_parameters) |
| |
| def | IsPropagationStep (self) |
| |
| def | CheckPropagation (self, solver, list_of_processes, list_of_output_processes) |
| |
| def | UpdateSolverAndProcesses (self, solver, list_of_processes, list_of_output_processes) |
| |
| def | Finalize (self) |
| |
◆ __init__()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.__init__ |
( |
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self, |
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model, |
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order_processes_initialization |
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) |
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◆ CheckPropagation()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.CheckPropagation |
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self, |
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solver, |
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list_of_processes, |
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list_of_output_processes |
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) |
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◆ Finalize()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.Finalize |
( |
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self | ) |
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◆ Initialize()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.Initialize |
( |
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self, |
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parameters |
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) |
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◆ IsPropagationStep()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.IsPropagationStep |
( |
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self | ) |
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◆ SaveInitialProblemFiles()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.SaveInitialProblemFiles |
( |
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self | ) |
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◆ UpdateModelPartNames()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.UpdateModelPartNames |
( |
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self, |
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process_parameters |
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) |
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◆ UpdateSolverAndProcesses()
| def poromechanics_fracture_propagation_utility.FracturePropagationUtility.UpdateSolverAndProcesses |
( |
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self, |
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solver, |
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list_of_processes, |
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) |
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◆ execute_gid
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.execute_gid |
◆ FracturesData
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.FracturesData |
◆ gid_path
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.gid_path |
◆ last_state_path
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.last_state_path |
◆ list_of_files_names
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.list_of_files_names |
◆ model
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.model |
◆ model_part_number
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.model_part_number |
◆ move_mesh_flag
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.move_mesh_flag |
◆ order_processes_initialization
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.order_processes_initialization |
◆ orig_state_path
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.orig_state_path |
◆ original_model_part_name
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.original_model_part_name |
◆ problem_name
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.problem_name |
◆ problem_path
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.problem_path |
◆ propagation_count
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.propagation_count |
◆ propagation_frequency
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.propagation_frequency |
◆ PropagationUtility
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.PropagationUtility |
◆ step_count
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.step_count |
◆ tcl_proc
| poromechanics_fracture_propagation_utility.FracturePropagationUtility.tcl_proc |
The documentation for this class was generated from the following file:


The Directory object allows you to access directories on disk. This object is always available in a form of predefined Directory global variable.
// create directory structure Directory.Create("c:\somedir\otherdir"); |
| Create | Creates a new directory or directory tree. |
| Delete | Deletes a directory. |
| GetFiles | Returns list of files stored in a given directory. |
| GetDirectories | Returns list of sub-directories stored in a given directory. |
| GetDrives | Returns list of present disk drives. |
| Type (read only) | Returns always "directory" |
| PathSeparator (read only) | Returns the standard path separator character. |
| CurrentDirectory | Gets or sets the current working directory for an application. |
| TempDirectory (read only) | Returns Windows temporary directory. |
Creates a new directory or directory tree.
Returns true if the directory tree has been successfuly created.
Deletes a directory.
Returns true if the directory has been successfuly deleted.
This method only deletes one directory, not the entire directory tree specified in the Path parameter.
Returns list of files stored in a given directory.
Returns an Array object containing filenames of all the files stored in a given directory.
Returns list of sub-directories stored in a given directory.
Returns an Array object containing names of all the sub-directories stored in a given directory.
Returns list of present disk drives.
Returns an Array object containing names of all the disk drives, such as "c:\".


{% include "includes/head.html" %}
{% include "includes/nav.html" %}
{{content}}
{% include "includes/footer.html" %}


Looking for what I have done and experience? Look no further. Here is my resume.
Core Project
Core Fighter
Here are some games I have done. They are not finished. Give them a try.
Game
Attack of the Space Kitty
Other Game Project
I have made some simulations. They are fun to play with.
Snell's Law


Routed Notification History
{% from
"harvester/helpers/pagination.html" import render_pagination%} {{
render_pagination(num_of_pages,page_num,link) }}
| Send Date |
Event |
Title |
Analysis Date |
{% from "harvester/helpers/pagination.html" import render_pagination%}
{{ render_pagination(num_of_pages,page_num,link) }}


Music Thing Radio Music is a DIY Eurorack module design by eminent instrument designer Tom Whitwell. This is a digital sample player module based on the Teensy microcontroller, that the author has released the full design for (i.e. it's open hardware and software) and does not actually sell himself. Typically, you'll buy a kit from e.g. Thonk and solder it yourself.
What's special about this module is that it digitally simulates the radio-powered experiments by avantgarde composers such as John Cage and Karlheinz Stockhausen. It does this by providing 16 sample banks, corresponding to directories on the SD card, which each contain up to 75 "radio channels", each corresponding to a sound file. The module provides a "Station" knob, with which you can scan between the "stations" (continuously playing samples) of the currently active bank.
For added fun and experimentation, there is also an input for automatically tuning the "radio" via voltage ("Tune"), which is typically sent by other parts of the modular synthesizer. This should provide for some unexpected results, as you can f.ex. generate random control signals from something like a Wogglebug module.
In addition to the tuning functionality, there's a "Reset" button which will reset the playback position of the sample playing and it also has a control voltage input (named "Reset" too), which lets you reset playback in a controlled or random manner (all depending on what you feed it with).
The third main functionality is the "Start" knob, which controls the position where "Reset" will restart sample playback. This function too has a control voltage input to modulate its value automatically, which should have some fun potential.
Music Thing Modular Radio Music Prototype from Tom Whitwell on Vimeo.
Users of Radio Music
Prominent users of Radio Music include:
Historical Background
John Cage
From Wikipedia: In July 1942 American experimental music composer, writer and visual artist John Cage wrote the musical composition Credo in Us. It was later revised in October of that year. In the wake of Pearl Harbor, this piece avoided the populist tendencies of fellow American composers at the time, while the piece's title is thought to be a call to collective unity.
Styled as "a dramatic playlet for Two Characters", Cage described Credo in Us as "a suite with a satirical character". It was composed to accompany a piece of contemporary dance choreographed by his partner and collaborator Merce Cunningham and choreographer Jean Erdman, who performed the piece at its premiere in Bennington College, Vermont on August 1, 1942.
The instrumentation for the original performance included four performers: a pianist; two percussionists playing muted gongs, tin cans, electric buzzer and tom-toms; and a fourth performer operating a radio and a phonograph. For the phonograph, Cage suggests using something "classic" such as Dvořák, Beethoven, Sibelius or Shostakovich; and for the radio, to use any station but avoid news programs in the case of a "national emergency". Jean Erdman recalls that for the first performance a 'tack-piano' was used—one of Cage's prepared pianos, though the pianist is also called upon to play the soundbox of the instrument as a percussionist.
Karlheinz Stockhausen
From Wikipedia: In 1968, Karlheinz Stockhausen produced the composition Kurzwellen (Short Waves), for six players with shortwave receivers and live electronics. Each performer plays a series of events separated by pauses. An event may be played either with the radio or with an instrument, and it is also possible for a player to accompany an event on an instrument with the radio or vice versa, or to blend both together. Each event has a distinct duration defined by its subdivision into segments with a characteristic rhythm.


--- layout: page title: "Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)" description: "RFC 2616 defines the Content-Disposition response header field, but points out that it is not part of the HTTP/1.1 Standard. This specification takes over the definition and registration of Content-Disposition, as used in HTTP, and clarifies internationalization aspects." ---
| Document Name: | RFC 6266 |
|---|---|
| Document URI: |
urn:ietf:rfc:6266
|
| Online Version: |
https://datatracker.ietf.org/doc/html/rfc6266
|
| Organization: | Internet Engineering Task Force (IETF) |
| Series: | Request for Comments (RFC) |
| Abstract: | RFC 2616 defines the Content-Disposition response header field, but points out that it is not part of the HTTP/1.1 Standard. This specification takes over the definition and registration of Content-Disposition, as used in HTTP, and clarifies internationalization aspects. |
Content-Disposition
Return to ( Series | Organization | all Specifications )


--- layout: post title: Security Vulnerability in Nested Attributes code in Ruby On Rails 2.3.9 and 3.0.0 categories: [] author: michael published: true date: 2010-10-15 02:35:00.000000000 +01:00 ---
There is a vulnerability in the nested attributes handling code in some versions of Ruby on Rails. An attacker could manipulate form parameters and make changes to records other than those the developer intended. This vulnerability has been assigned the identifier CVE-2010-3933.
An attacker could change parameter names for form inputs and make changes to arbitrary records in the system. All users running an affected release should upgrade immediately.
The 3.0.1 and 2.3.10 releases are available at the normal locations. The 3.0.1 release consists solely of 3.0.0 with the security issue fixed, 3.0.2 will follow shortly and include other bugfixes as well as this fix. 2.3.10 is a regular release in the 2.3 series.
There are no feasible workarounds for this issue.
To aid users who aren’t able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.
Please note that only the 2.3.x and 3.0.x series are supported at present. Users of earlier unsupported releases are advised to upgrade as soon as possible.
Thanks to Matti Paksula and Juha Suuraho of Enemy & Sons Ltd for reporting the vulnerability to us and helping verify the fix.


Product Inventory
Proceed with caution:
Only four (Apple iPhone 7Plus, 89723) can be added at one time. The overage must be approved by management.


Balaji R.
Appeared on “TRINITY MIRROR“ news paper for developing social concerned apps, Student co-ordinarater for “APP FESTO 2020”, Mobile application development lead at “MIT Square”, President at “Alpha Studymonk”, Social media Co-ordinator at “IIC SEC”, "Campus Ambassador of Sanfoundry", 1st place in ”Lets Build IT” app development event , Best paper presentation award in “TRENDZIE 4.0”, ”DRESTEIN 2K19” winner.
My simple philosophy is “Talk less, work more and Help other as you can!”
Throughout my career, I've noticed that I've always beed good with handling problems and leadership. To do something without having to be told to do it. when I work, I always take initiative. If I see something that needs doing, I don't wait for instruction, I do it. I believe that to be get anywhere in life, you need this quality.
“Action is more important than an ordinary reaction”
- Balaji
Manju R.
Brand Ambassador of Zoelife, Youth Talk Representative SEC regional level, C programming Trainer(Juniors SEC).Through summer internship program "Internsmela'20" I got my first internship in ZRAE Global, a robotics based company. I was assigned to a new wellness based project. The whole journey was a delightful experience. They had me comfortable in working and encouraged me at every point of my work. As a result of my dedicated input, I was offered to be the "Brand Ambassador of Zoelife". It is an organic wellness product with AI enabled health analysis. Everyone has a level of influence that can be harnessed for greater good. I get to preach what I practice. Before getting placed, I was not familiar about artificial intelligence or corporate culture. Never hesitate to try out thing you are unaware of,Only then you will find out what your really capable of doing.
Nikhitha S.
Campus ambassador of international MUN, Youth Talk Representative SEC regional level, Student co-ordinarater for Sanfoundry Certification Test.This achievement gave me the boldness to speak in pubic and evangelize my thoughts to people which created positive spirit within me. This also gave me an exposure to create an identity for myself and gave self confidence to uproot my personalities I got my first internship at tescom and it gave me immense pleasure to work as a National business relationship manager from campus to corporate and ultimately I was gaining experience in C2C, I was given an opportunity to lead as a official campus ambassador of international MUN which enhanced me to play a very elegant role in my give task.i was able to inculcate awareness of the growth brought about by model United Nations.it provoked diplomacy ,leadership and public speaking within me .i was doing social media marketing ,sales,organisational development and more,
Sam Joy
Appreciation From Amazon Web Service, Got Letter of Appreciation From United Kingdom Government, Appreciation From NCIIPC (Government of India), Got 10 Hall of FamesFound a sensitive data leak on GitHub that might lead to accessing sensitive data of employees or clients of Amazon Web services.Found Open redirection vulnerabilities on gov.uk which arise an application that incorporates user-controllable data into the target of a redirection in an unsafe way, I have reported. 1-No Rate Limit on Login Page of https://auth.mygov.in/ which leads to Brute Force Attack. 2-No Rate Limit On Forgot Password Page and Business Logic Error In
Arun M.V.
“Star Commander “ @ StudyMonk, “Stackathon finalist “-A startup hackathon.StarCommander Intern : Was a learning curve and gave a platform to apply all that I learnt. I had been selected for the interview after shortlisting my portfolio,So I learnt to work as a team and also how to learn on the go. Stackathon ,a new age startup hackathon was a very different experience from all the current hackathons ,,A 3 day event consisting of both technical and non technical aspects ,It gave me the chance of meeting many mentors and also entrepreneurs.It gives the platform to convert your idea into a startup ,readily funded for suitable investors
Dharini V K
Winner in #rakhiinlockdown contest conducted by wattpad India,semifinalist in marathal thagumo Tamil oratorical contest.This event helped me to gain skills and improved my confidence, I understood what our army went through during kargil war and understood their difficulties and it also helped me to develop my public speaking skills,helped to improve my writing skills and made me understand what kind of writing young India expects
Niranjan Kumar S
Second place in suprise event "CONVERGENCE'20", "CAMPUS AMBASSADOR" ACM IIT DHANBAD Student chapter Won 1st place in Table Tennis during sports day 2020.Through these achievements I gained confidence and overcame stage fears and also got to develop Vocabulary skills, presentable skills,Communication skills and leadership skills also gained knowledge and got the immense idea of creative thinking and adaptability.Will use the upcoming opportunities and give my best in the performance
Dwaraknath K
Second Place in international conference, Second Place in cultural group dance. Also got the name of global problem solver in NASA spaceapps .I gained through these achievements are I gained confidence and overcame stage fears and also got to develop vocabulary skills and presentable skills also gained knowledge and got the immense idea of creative thinking and adaptability.Will give my best in upcoming opportunities.!
F/C AVANEETH
“All India Guard Of Honor-GIVING GUARDS TO HONOURABLE PRIME MINISTER OF INDIA SRI NARENDRA MODI.”RDC it is one of the greatest desire an NCC cadet will have and it all goes through a series of training and multiple levels of selection and which gives the confidence to face any competition .I had the pride to be in the All India Guard Of Honour contingent(AIGOH) and also see the top VVIPs of India .It also gives me the chance to talk to officers in the Indian armed forces and know how things really are .I even had the Privilege to be first person from our college to be in the AIGOH contingent.
Eniyavan T.
“NCC(Airwing) Cadet, Attended Camps like CATC-1, RDC(Selection camp)-1,Pre-IGC(1),State level Camp-IGC(Inter Group Competition)”I had a lot of Experience from my first camp CATC with my Seniors and co-cadets.I learnt the value of time and accountability of every person . I also learnt that Respect is the basic thing in Civil/Defence field.In my State level camp (IGC) I learnt about Leadership skills and Self-Motivation.Those camps were my life turning points- JAIHIND.
F/C Gautham Krishnan
“Represented Tamilnadu in the AIVSC. Drill contingent and line area-Runner , Had sortie in the plane VIRUS SW 80 and the helicopter Mi 17.”It was a 10 days camp held at jodhpur which is one of the beautiful places in Rajasthan. We meet cadets from other states and had conversation with each other. We were able to meet the officers who were in the camp. The flying experience was awesome . The overall camp experience was good .
Sobhana S.
“First place in Paper Presentation, First place in Lets Build IT mobile app development Event, Digital marketing Co-ordinator at SRAYS technologies”Hello this is sobhana of department of information technology, Sri Sairam engineering college. Now this is my 3 rd academic year. My only aim is to get placed in good reputed company. But after entering into this college I learnt many things and also I get some interest in doing many projects. And also Iam blessed to have supporting faculties and also good teammates. Iam sure that I will be doing many projects in the upcoming academic year
Srinidhi M.S.
“Represented my college in Youth Talk regional level.”Public speaking is one of the most common fears which every human faces, and I feel proud that I have broken that fear inside me. I felt that public speaking is just not about the words, it's an experience. It's your job , as the speaker ,to create that experience and invite your listeners to share it
Monika Mohankumar
“National Level Technical Symposium, CEBROID 2k18-Winner, IEEE Brand Ambassador 2020.”Big idea summit & Expo2018-In which I learnt about interacting with various people and also showcasing our Innovative ideas and implementing it As a volunteer in IEEE , I had the opportunity to conduct the educational outreach program and also organised international live session on Expertise Global webinar. Then I got selected as an IEEE Brand Ambassador and had the opportunity to interact with the IEEE Members.
Gokul Krishnan R. & Team
“Best Complete Solution Award” IBM Hack Challenge,“Best Paper Award”.IBM Hack - Challenge 2019 was a great experience for us. We won special jury award “Best Complete Solution” and we are awarded with Google-Home worth 9000INR. We presented two technical papers in IACETI Conference held on September 2nd at Hotel Village Changi, Singapore. We got “Best Paper Award” for one of our papers. -Team.
Rahul Narayanan L
“Run-Time Terror Coding Competition-Winner, Do You Code? Coding Quiz –Runner , Finalist in Buoyancy Innovation Challenge,The Chairperson of IEEE SEC Student Branch, Student Coordinator of IT Department’s Xtrofest.”Two milestones during my college days were being selected as the Chairperson of IEEE SEC Student Branch and Student Coordinator of IT Department’s Xtrofest Hackathon. From Biology to IT, coding made me feel both hate and love towards it at the same time. Though the process of learning paired with coding made me explore from developing a mobile app to making machine learning models, most of these projects were built on the spot of coding events. Although the project works in the initial years were more intense, with more participation and learning, made me brag one or more prizes. If I can do, You can too!. So don't sit in the class, just don't. You can always learn the academics, get your hands dirty by engaging into different competitions and keep on learning new things.
YAZHINI M.
“Best Outgoing Student award , JOINT SECRETARY OF WoWWW CELL”Hey, I'm Yazhini of Department of Information Technology, Sri Sairam Engineering College, Batch 2020. When I joined my UG here I was sure that I'm going to get a professional degree because that's what everyone will obviously expect from an educational institution. Never did I know that my college will expose me to the real world where only education is not enough to face it. I was given lot of opportunities to explore what I am good at and support to exhibit what I have learnt along with standard education. From co-curricular activities like project expo, conferences to extra-curricular activities like extempore, dance, sports, my department encouraged me to participate and showcase my skills and talents. They always put our betterment above everything and provided various platforms to develop and enrich ourselves. It groomed me into a better human for the society and has given 3 wonderful career opportunities in companies like Accenture, TCS and Prodapt.
Senthilkumar J.
“LEO MUTHU MERIT SCHOLARSHIP AWARD” for ACADEMIC EXCELLENCE, Encrpto-O-Connect (CYBERTRIX-2018)-Winner, VIVID 2020- Best Project Award & Runner, “HACK FOR INNOVATION’19”-Winner.Hi everyone, my four-year journey(2016-2020) in Sairam College was incredible. I have got wonderful staff members and many friends who have supported me in various situations.Our department was really good and encouraging where you can gain knowledge and achieve lot of success. HOD Mam is the strongest pillar of our department. In 2019, I have been elected as a Student Chairman of our department. It was a great experience for me as I am able to organize the grand event called Xtrofest'19, a mega technical fest conducted by our department. Overall 600 participants across the India were participated in this event. I am one of the top students in our college and I came from a rural tamil medium background. So don't underestimate your capabilities and identify your inborn talents from you which will elevate your future. -Senthilkumar J.
Ajay Krishnan J.U.
“ISTE BEST STUDENT AWARD”, “Best Research paper presentation Award”"College is the place where Larvae transforms into butterflies”. We get lot many opportunities to prove and achieve. Try never to say no and accept the opportunities that presents itself." -Ajay Krishnan J.U
Sidhaardh S.
“Vivid 2017- Runner”- cash award 10000,”Project Exhibition-Runner”, The Best Paper Award in an International Conference, Best Project Award in an internship program - expert hubContinuous effort without expecting results has made me gain appreciation. The support from our HOD, Mentor and Guide has shaped me and made me a person that I am today.Inputs from my Friends , Seniors too helped. -Sidhaardh S
Leo Ram
"IEEE CS Richard Merwin scholarship", "BRAND AMBASSADOR for IEEE PROGRAMMING LEAGUE", "IEEE CS SYP""Great things in life are never done by one person. They are done by a team of people. " This is something IEEE taught me through shows they organize. Networking is not just collecting contacts but planting relations and sharing knowledge. From these people, I came across the highest award that an IEEE Computer Society Student Member can accomplish for his works. I was recognised for my commitment. I was awarded the Richard E. Merwin Scholarship with $1000 on January 4th, 2020. Then I became Brand Ambassador for IEEE, Section Ambassador for IEEE Programming League by IEEE CS SYP. Ultimately I am into IEEE India Council Student Coordination Team where I was selected among 34 from 700+ registrations nationwide".


Covid
Posted by: Bahati
The statement released last night also shows that 190 cases have been found out of 16811 sample tests, 359 have recovered while 16 patients are critically ill.
The statement released last night also shows that 190 cases have been found, 359 have recovered while 16 patients are critically ill.
Read mre...

Other symptoms include tiredness to a degree that normal activities are affected; sleep problems and troubles with memory.
Read more...
Specialised Doctor
Posted by: Bahati
Rodriguez has revealed that the condition cannot be confirmed within two or three months noting that it takes couple of months of unprotected sex.
“We confirm infertility when the couple that didn’t use family planning methods spends two years .
Read more...
Patient
Posted by: Bahati
Dr. Goyal has said that finger sucking is a usual habit among children that it starts affecting the jaw after three years.
“Finger sucking is normal for a child but it causes side effects if the practice spans for over three years. It starts damaging teeth at this stage and can be harmful if parents not seek assistance
Read more...
Specialised Doctor
Posted by: Bahati
Rodriguez has revealed that the condition cannot be confirmed within two or three months noting that it takes couple of months of unprotected sex.
“We confirm infertility when the couple that didn’t use family planning methods spends two years .
Read more...
Patient
Posted by: Bahati
Dr. Goyal has said that finger sucking is a usual habit among children that it starts affecting the jaw after three years.
“Finger sucking is normal for a child but it causes side effects if the practice spans for over three years. It starts damaging teeth at this stage and can be harmful if parents not seek assistance
Read more...
Covid
Posted by: Bahati
The statement released last night also shows that 190 cases have been found out of 16811 sample tests, 359 have recovered while 16 patients are critically ill.
The statement released last night also shows that 190 cases have been found, 359 have recovered while 16 patients are critically ill.
Read mre...

Other symptoms include tiredness to a degree that normal activities are affected; sleep problems and troubles with memory.
Read more...


I started my career with Technical Support and Operations & Maintenance roles at some IT companies. After that I start my System/SRE roles at Dwarves Foundation and Tiki.
My area of focus lies in designing system and deploy products.I enjoy scripting and coding the system as much as talking with Developers to iterate and improve the reliable that reach business goals.
About MeOver 3+ years of experience working with outsourcing and product companies. I design & develop/ maintain products system and infrastructure to help businesses and improve people's lives.
LinkedinBuild and manage many prometheus instance to monitor services running on distributed Kubernetes clusters.
NotesSome metrics need long term storage (1-2 months) so I build a dedicated back-end storage for Prometheus.
NotesA pub/sub service to control all event about resouce from K8s-API. Using Kafka, with agent and processer mode. Allow to auto update DNS record when new Ingress resouce coming up and more...
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The Portfolio of
Frank Juval Quinones
Welcome to my portfolio. If you have any questions about any projects, please feel free to contact me
Edge Animate Prototype
For this project I was tasked to come up with an animated concept for an ad. Click on "Find Out More" to replay.
Prototype: Expanding/Contracting Banner - Behavior 01
For this prototype, I was tasked with coming up with ideas for the behavior and animation of this banner.
Prototype: Expanding/Contracting Banner - Behavior 02
For this prototype, I was tasked with coming up with ideas for the behavior and animation of this banner.
Prototype: Comp Grid
For this prototype, I was tasked with coming up with ideas for the behavior and animation of this banner.
Universal Play Logo
For this prototype, I was tasked with coming up with ideas for the behavior and animation of this banner.
Optimus Animation Concept
For this prototype, I was tasked with coming up with ideas for the behavior and animation of this banner.
Font Mapping for Universal Parks & Resorts
I was instrumental in the font change from Gotham to Avenir Next. I helped solved technical font issues in order for the team to test and deploy. I audited the site, put together documentation and tests showing how the font change would affect pages.
Design, Front End, and Technology Consulting for Universal Parks & Resorts
I worked closely with the dev team and helped solve problems with CSS, improve animation timing, improve upon ideas. I also collaborated with teams outside of ours, including the Innovation team where I tested, consulted,
and help make decisions for future tech and applications.
Universal Studios Chatbot
I was the lead that brought the Chatbot to both Universal Orlando Resort and Universal Studios Hollywood


Tamela Wolff shares some of the beauty in her backyard with this picture of apples after a rainfall. Voted 4/5 on flickrScorer.
View the original "Apple of My Eye" @ flickr.
Visit the Tamela Wolff Photography photoblog.
Update: You can also buy this as a print.
Random Link:
Apple of My Eye by Tamela Wolff
Mon, Jan 22, 2007 18:00 UTC
Permalink
Latest Links:
Insanely Great Tees
(Images copyrighted by Zap Labs in NYC, creators of Insanely Great Tees.)
"Insanely Great" was a favorite catchphrase of Steve Jobs for the Mac. Insanely Great Tees carries on the Mac heritage with simple, stylish designs.
My favorite is Magic Eraser! Boy, I wish I owned a Mac.
See the entire catalog over at InsanelyGreatTees.com
"Insanely Great" was a favorite catchphrase of Steve Jobs for the Mac. Insanely Great Tees carries on the Mac heritage with simple, stylish designs.
My favorite is Magic Eraser! Boy, I wish I owned a Mac.
See the entire catalog over at InsanelyGreatTees.com
Tue, Aug 07, 2007 10:00 UTC
Nervous Little Robot
Why are they nervous? Maybe they are afraid you will step on them since they're only 8 inches tall. They still manage to pack a lot of style and cuteness though ;-) Read more and buy them @ ShanaLogic.com.
Mon, Aug 06, 2007 22:00 UTC


Henry Harcourt
Kia ora Taiao! (Hello World!)
Sprint One Technical
Sprint One Core
Sprint Two Technical
Sprint Two Core
Sprint Three Technical
Sprint Three Core
Sprint Four Technical
Sprint Four Core
Sprint Five Core


Computer squealed horridly and died with burned smell. So... shopping for a new laptop. Any non-Mac suggestions (not ready to jump yet)?
12/13/2009, 10:48:50 AM
Favs: 0
Retweets: 0
link--- layout: tweet ---
Computer squealed horridly and died with burned smell. So... shopping for a new laptop. Any non-Mac suggestions (not ready to jump yet)?
12/13/2009, 10:48:50 AM
Favs: 0
Retweets: 0
link


You've both been caught by the police and are facing jail time. The police offer you a plea-bargain deal if you inform on your partner.
You can either stay quiet, but won't get the deal, or inform on your partner.
Remember that your partner has to consider the same deal.

If you both inform on each other, then you both get significant jail time and go to jail for 3 years.
If you inform on your partner, but they stay quiet, you walk free while your partner goes to jail for five years.
Summary of the Prisoner's Dilemma PAYOFF MATRIX
Traditional PAYOFF MATRIX


Go to the source code of this file.
Functions | |
| opj_image_t * | opj_image_create0 (void) |
| Create an empty image. | |
| void | opj_image_comp_header_update (opj_image_t *p_image, const struct opj_cp *p_cp) |
| Updates the components characteristics of the image from the coding parameters. | |
| void | opj_copy_image_header (const opj_image_t *p_image_src, opj_image_t *p_image_dest) |
| Copy only header of image and its component header (no data are copied) if dest image have data, they will be freed. |
The functions in IMAGE.C have for goal to realize operations on images.


Before the BMV paper was published in 2009, a number of theories on the pricing premium for stocks with idiosyncratic skewness existed, but lacked supporting empirical evidence of the relationship between idiosyncratic skewness and returns. BMV fills this void by estimating a model of predicted skewness and using predicted skewness to explain the cross-section of returns. The paper finds that lagged idiosyncratic volatility is a stronger predictor of skewness than lagged idiosyncratic skewness.
In this implementation, we rely on idiosyncratic volatility and skewness to predict idiosyncratic skewness. Interested users can build from this implementation by trying the following extensions:


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A skilled engineer with a 5-year track record in technical service, repair, and troubleshooting of medical equipment. And now I start my career as a Front-End developer. Extensive technical knowledge and attention to detail for the reliable work of the products. A perfectionist by nature with a methodical testing ability and good communication skills. A personalized approach to clients' needs.
View ResumeIt is a project for watching photos, by scrolling down, uploaded from Unsplash.com dynamically. And the feed looks like infinite, if you scroll down, the new images upload again and again.
It is a little quiz application. Questions of the quiz are loaded from the server and show to the customer. When the customer clicked on the answer, the color indication will appear (that answer is correct or not).
It is a little project, which intended to generate a new quote with a click of a button and also share the quote to Twitter.
This is a project, which intended for telling jokes. Here used JokeAPI and text-to-speech API (VoiceRSS). When you want to listen a joke, just press the button "Tell Me A Joke".
This is a learning project, which shows a using picture-in-picture functionality. To start just push "Start" button and select an application window, which do you want to see inside the little window.
It is a small widget, which is the learning project. Where we can see switching between the current date and current time (in full and short format), and changing background by random color. A change of the display-mode is triggered by a click on the page, or after 5 seconds standby.
This project shows how to switch between Light Mode and Dark Mode, with saving previous setting of mode in the Local storage.
This learning project shows an animation of the elements on the Web-page template, which are firing one by one, during scrolling of the web-page.
This is a music player, which supports the basic funtionality of the usual music player.
In this project you can set a countdown title and a date, after that you'll see a countdown (which is possible to reset). The data of the countdown is saved in the Local Storage, it means, after reload the page, the countdown save prevoius data.
It is an app for keep bookmarks, where you can store some web-links and its names into your browser.
It is a simple video player. Here you can play/pause the video, change volume and mute/unmute video, search some moment by clicking on the videoplayback bar, also available full screen view and changing playback speed.
It is a web-page, where there is a form for user registration. Where user can input next data: Full Name, Phone Number, Email Address, Website URL, and a Password. Input fields are validated (with comparing both password fields), with color indication (red/green border).
This is a spock-rock-game, where the user plays with the computer. The rules are like in the rock-paper-scissors game, but with some additions.
This is a project, where the user can see the space pictures from NASA, with descriptions. The data is loaded from NASA using NASA API.
This is a Math Sprint Game, where the user has to agree or disagree with the results of math equations. The key parameter in this game is the time, which the user is spent making decisions. For every incorrect answer added penalty time. The final result shows when all equations are done. The best scores are stored and presented on the start page.
This project illustrates the Drag-And-Drop feature by the Kanban board. Where Users can add, modify, remove, and drag and drop items. From the beginning, there are some items, which are already created, just for example.
This project represents a basic calculator. This calculator can work with integer and float numbers. It has the next operators: addition, subtraction, multiplication, division. Also, the next buttons are present: clear and equal.
This is a landing page, where the markup is made by a sketch in Figma. Also, the customer can switch between different backgrounds by click on each one (on the upper right corner of the page).
This project shows the functionality of the Canvas. Here the user can change the background color, draw lines (different weights, and color), erase them, erase all Canvas, save changes in the Local Storage, clear the Local Storage, and save the picture to the file and download it to own computer. Also, the status bar is present (at the upper left corner of the window).
It is a pong game, where the user plays with a computer. Also, the score is counted, and who will have the maximum score (7 points) - will win. After the end of the game, the user has the possibility to play again.
Send an email
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Notes on translations - using gettext¶
Important
There are many sites that explain how to use gettext. However, I found that, no matter what individual explanation I read, it was either incomplete, too specific, or otherwise glossing over some minor point that was important for my project.
I wrote these notes mostly for myself, but they may be useful for you as well, perhaps even more so if you read a “standard” tutorial on using gettext first.
What is gettext?¶
gettext is basically a standardized way of internationalization (i18n) and localization (l10n) of computer programs.
What this means for this project, is the translation of strings shown to the user in their preferred language.
Structure of this project¶
Below, I make references to various files. Here’s a simplified view of the directory structure of this project, showing only a few relevant files:
friendly/
demos/
friendly/
locales/
fr/
LC_MESSAGES/
friendly.mo
friendly.po
friendly.pot
__init__.py
...
make_pot.bat <-- not in repository
my_gettext.py
...
tests/
setup.py
If you look at the repository on Github (or cloned locally), you will not
see the file make_pot.bat
.
I’ll explain its role below.
How to use gettext¶
Suppose we want to greet a user in their own language. For example, in English we might have the following:
print("Hello {name}".format(name=username))
while in French, we might have:
print("Bonjour {name}".format(name=username))
The first thing to do would normally be to choose one of these forms as our standard to be used as the reference for translation. This is what I eventually chose to do for this project. However, in the past, I have often used a variation where words are written in the source file in uppercase letter to make it more obvious to see if a translation is missing.
To indicate that a string needs to be translated, the common way is to
surround it by a function call, using _
as the function name:
print( _( "Hello {name}" ) .format(name=username) )
# extra spaces above added for clarity
Next, we need to create a “template” file for translations.
I use pygettext.py
included as a tool with Python.
It is very likely not on the normal path where it can be found by Python.
If you don’t know where your python files are located, you can use
Python’s REPL and do the following:
>>> import sys
>>> print(sys.prefix)
path\to\python
You can then navigate to the directory containing the Python version
you are using and will almost certainly
find pygettext.py
under the tools\i18n
subdirectory.
pygettext
will extract all the strings surronded by _( )
in the
input file you specify and create a “template” file (identified by a .pot
extension). To make my life easier, I simply type make_pot
at the prompt
which executes the content of make_pot.bat
(I’m using Windows):
py -3.7 path\to\python\tools\i18n\pygettext.py -p locales -d friendly *.py
make_pot.bat
is located in the same directory where the Python source files containing strings to be translated is located.I use
python filename.py
instead of simplyfilename.py
as I set my computer default to open.py
files with my preferred editor instead of executing them. If you are not using Windows, you might need to usepython3
instead ofpython
.The
-p locales
option specifies that the template file is going to be created (or updated) in thelocales/
directory (see above for the directory structure).Using the -d flag, I specified
friendly
as the name for the template file,friendly.pot
, instead of the defaultmessages.pot
.The source files scanned by pygettext (
*.py
) will be all the Python files in that directory.
There’s more to be done; let’s break this up into a few additional sections.
Using Poedit¶
In principle, template files can be edited with any standard text editor
to create “portable object” (.po
) files from a template file.
However, this is more easily done using
Poedit which is a free program especially designed
for this task. There is a paid “pro” version but it is really not required for
most tasks. However, after a while, I have purchased it and found its
suggested translations usually very useful, at least as a starting point.
With Poedit, you have the choice of creating a new translation
either from a .pot
file, or from a .po
file. Open the relevant file,
choose a language, and start translating the various strings.
If you are updating an existing translation, open the .po
file
and use Poedit’s “Catalog” menu (fourth at the top of the menu
bar) to first update from the source (messages.pot
) from which the
.po
file is derived.
Poedit gives the choice to translate for specific regions (e.g. fr_CA for French used in Canada). For this project, I prefer to choose a generic two-letter code (fr) as it is assumed to be the case in various places.
Warning
If, for a given language, you absolutely need different language translations, specific to a region, please file an issue first so that this can be discussed and the impact on the rest of the code can be properly evaluated.
One of the goals of this project is to provide easier to understand tracebacks than those provided by Python. These do not need to be absolutely perfect. For example, we follow Blockly’s practice in not supporting plural formatting
When it comes time to save the .po
file, use a similar structure
as that shown above and save
it in the LC_MESSAGES
directory of the appropriate language.
Note that Poedit will automatically save another file with
a .mo
extension; this is a “machine object” (binary) file that will actually
be used by your program.
In addition to strings to be translated, .po
files contain some
information about who translated the file and some copyright information.
In general, you might want to fill in the appropriate information.
Note that Poedit allows you to set your personal information (name
and email address) which will be automatically used, so that you don’t
have to edit the created file by hand.
Warning
Please, do not contribute translations to friendly where you attribute the copyright to yourself. Either do not include any copyright information or attribute it to the friendly project.
Telling Python to use the translations¶
In this project, the language selection is done in the file session.py
.
(See directory structure above.)
At the top of session.py
, my_gettext
is imported.
As I am writing this documentation, this is the content of my_gettext.py
:
import gettext
import os
class LangState:
def __init__(self):
self.translate = None
self.lang = "en"
def install(self, lang=None):
"""Sets the language to be used for translations"""
if lang is None:
lang = "en"
try:
# We first look for the exact language requested.
_lang = gettext.translation(
"friendly",
localedir=os.path.normpath( # 1
os.path.join(os.path.dirname(__file__), "locales")
),
languages=[lang],
fallback=False, # 2
)
except FileNotFoundError:
# If it is not available, we make it possible to replace a
# language specific to a region, as in fr_CA, by a more
# generic version, such as fr, defined by a two-letter code.
lang = lang[:2] # 3
_lang = gettext.translation(
"friendly",
localedir=os.path.normpath(
os.path.join(os.path.dirname(__file__), "locales")
),
languages=[lang],
fallback=True, # 4 This means that the hard-coded strings in
# the source file will be used if the requested language
# is not available.
)
self.lang = lang
self.translate = _lang.gettext
current_lang = LangState() # 3
Here is an explanation for the numbered comments above:
“Foolproof” way of locating the translation directory
By default, fallback is
False
; for clarity, we explicitly set it. If a request is made to use a non-existing translation, an exception is raised.This is the instance we use elsewhere; see below.
When we want to make use of translations inside a given function, we do the following:
from . import my_gettext
def international_greeting(name):
_ = current_lang.translate
return _("Hello {name}").format(name=name)
Warning
Every language has its own way to deal (or not) with plural forms of words.
As mentioned, in principle, gettext
offers a way to handle
with the language specific complexities.
In practice for this project, we assume a single form to be used.
Why are .mo files in the repository¶
When configuring the project, the automatically generated .gitignore
file
include exclusion for .pot
and .mo
files.
The rationale is that these files are automatically generated (by some standard
programs) and it is generally suggested that such files not be included.
However, in this case, we want these files to be available to end users.
If someone clones the project, and needs to upload a version somewhere (e.g. pypi.org),
these generated files (at least the .mo
files) need to be included.
Packaging¶
This is more of a “note to self” than something needed for this project.
Since .po
and .mo
are data files are not python files,
they are not automatically added when creating a package with setuptools.
One way to include them is to write the following in a file named
manifest.in
written where setup.py
is found:
recursive-include friendly/locales *.*
Also (instead?), if using a setup.cfg
file, include the following:
[options.package_data]
* =
friendly/locales/*


We monetize infrastructure!
- recontextualize intuitive initiatives
- unleash end-to-end synergies
- envisioneer bricks-and-clicks e-markets
- brand turn-key e-business
- monetize one-to-one applications
- evolve revolutionary communities
- drive virtual supply-chains
- deploy sexy e-business
- exploit end-to-end content
- matrix out-of-the-box bandwidth
- harness bleeding-edge infrastructures
- transform real-time systems


QueueBarrierSynchronization
Undocumented
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Undocumented
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Undocumented
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Undocumented
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Undocumented
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Undocumented
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Undocumented
-
Undocumented
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Undocumented
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Undocumented
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Undocumented
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Undocumented
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Undocumented


Flavors |
||
|---|---|---|
| Bahama Mamma | French Vanilla | Orange |
| Banana | Fuzzy Navel | Orange Pineapple |
| Birthday Cake | Georgia Peach | P.O.G. |
| Blue Bubblegum | Grape | Pineapple |
| Blue Raspberry | Green Apple | Pink Lemonade |
| Blue Raspberry- sugar free | Guava | Rock'N Roll |
| Cheesecake | Lilikoi(Passion Fruit) | Strawberry |
| Cherry | Mai Tai | Strawberry Shortcake |
| Coconut | Mango | Tiger's Blood |
| Cotton Candy | Matcha Green Tea | Watermelon |
| Dreamsicle | Ninja Turtle | Wedding Cake |


A wavelet is a wave-like oscillation with an amplitude that begins at zero, increases, and then decreases back to zero. Generally, wavelets are intentionally crafted to have specific properties that make them useful for signal processing. Wavelets can be combined, with portions of a known signal by convolution to extract information from the unknown signal.
In continuous wavelet transforms, a given signal of finite energy
is projected on a continuous family of frequency bands (or similar
subspaces of the Lp
function space
L2(R)
). For instance the signal may be
represented on every frequency band of the form [f, 2f]
for all positive frequencies f > 0
. Then, the original
signal can be reconstructed by a suitable integration over all
the resulting frequency components.
It is computationally impossible to analyze a signal using all wavelet coefficients. Instead one may pick a discrete subset of the upper halfplane to be able to reconstruct a signal from the corresponding wavelet coefficients. That is, a discrete wavelet transform (DWT) is any wavelet transform for which the wavelets are discretely sampled.
Like the fast Fourier transform (FFT), the discrete wavelet transform is a fast, linear operation that operates on a data vector whose length is an integer power of 2, transforming it into a numerically different vector of the same length. The wavelet transform is invertible and in fact orthogonal. Both FFT and DWT can be viewed as a rotation in function space. A key advantage it has over Fourier transforms is temporal resolution: it captures both frequency and location information (location in time).
The below function returns a wavelet filter. The filter name is derived
from one of four classes of wavelet transform filters:
Daubechies, Least Asymetric, Best Localized and Coiflet. The prefixes
for filters of these classes are d
, la
,
bl
and c
, respectively. Following the
prefix, the filter name consists of an integer indicating length.
Supported lengths are as follows:
Additionally "haar" is supported for Haar wavelet. Besides, "d4", the simplest and most localized wavelet, uses a different centering method from other Daubechies wavelet.
def wavelet(filter: String): Wavelet
With a wavelet object, we can compute the discrete wavelet transform coefficients for a univariate time series. The size of time series array should be a power of 2. For time series of size no power of 2, 0 padding can be applied.
val sp500 = Array(
1103.96, 1107.84, 1114.11, 1108.61, 1106.36, 1097.86, 1105.31,
1114.51, 1118.84, 1121.08, 1127.53, 1128.55, 1125.53, 1126.60,
1116.56, 1132.66, 1135.71, 1136.27, 1140.52, 1145.96, 1143.81,
1137.31, 1145.68, 1147.72, 1136.03, 1147.95, 1138.68, 1115.49,
1092.40, 1095.80, 1091.94, 1096.93, 1087.61, 1073.89, 1090.05,
1100.67, 1097.25, 1064.12, 1065.51, 1060.06, 1069.68, 1067.10,
1075.95, 1079.13, 1096.14, 1099.03, 1105.49, 1110.00, 1107.49,
1095.89, 1101.24, 1103.10, 1105.36, 1117.01, 1119.36, 1119.12,
1125.12, 1138.40, 1137.56, 1140.22, 1143.96, 1151.71, 1148.53,
1150.83, 1159.94, 1166.13, 1166.68, 1157.25, 1166.47, 1172.70,
1170.03, 1167.58, 1167.71, 1173.75, 1171.75, 1171.23, 1178.71,
1186.01, 1188.23, 1181.75, 1187.47, 1194.94, 1195.94, 1198.69,
1210.77, 1210.17, 1192.06, 1199.04, 1207.16, 1202.52, 1207.87,
1217.07, 1209.92, 1184.59, 1193.30, 1206.77, 1188.58, 1197.50,
1169.24, 1164.38, 1127.04, 1122.27, 1156.39, 1155.43, 1170.04,
1157.19, 1136.52, 1138.78, 1119.57, 1107.34, 1067.26, 1084.78,
1067.42, 1075.51, 1074.27, 1102.59, 1087.30, 1073.01, 1098.82,
1098.43, 1065.84, 1050.81, 1062.75, 1058.77, 1082.65, 1095.00,
1091.21, 1114.02, 1115.98, 1116.16, 1122.79, 1113.90, 1095.57,
1090.93, 1075.10, 1077.50, 1071.10, 1040.56, 1031.10, 1027.65,
1028.09, 1028.54, 1062.92, 1070.50, 1077.23, 1080.65, 1095.61,
1094.46, 1093.85, 1066.85, 1064.53, 1086.67, 1072.14, 1092.17,
1102.89, 1117.36, 1112.84, 1108.07, 1098.44, 1107.53, 1125.34,
1121.06, 1125.78, 1122.07, 1122.80, 1122.92, 1116.89, 1081.48,
1082.22, 1077.49, 1081.16, 1092.08, 1092.44, 1075.63, 1073.36,
1063.20, 1048.98, 1056.28, 1049.27, 1062.90, 1046.88, 1049.72,
1080.66, 1093.61, 1102.60, 1092.36, 1101.15, 1104.57, 1113.38,
1121.16, 1119.43, 1123.89, 1126.39, 1126.57, 1142.82, 1139.49,
1131.10, 1131.69, 1148.64, 1142.31, 1146.75, 1145.97, 1143.49,
1144.96, 1140.68, 1159.81, 1161.57, 1158.36, 1165.32, 1164.28,
1171.32, 1177.82, 1177.47, 1176.83, 1178.64, 1166.74, 1179.82,
1180.52, 1184.74, 1184.88, 1183.84, 1184.47, 1183.87, 1185.71,
1187.86, 1193.79, 1198.34, 1221.20, 1223.24, 1223.59, 1213.14,
1213.04, 1209.07, 1200.44, 1194.79, 1178.33, 1183.75, 1196.12,
1198.07, 1192.51, 1183.70, 1194.16, 1189.08, 1182.96, 1186.60,
1206.81, 1219.93, 1223.87, 1227.25, 1225.02, 1230.14, 1233.85,
1242.52, 1241.84, 1241.58, 1236.34
)
smile> val haar = wavelet("haar")
smile> haar.transform(sp500)
The above example transform a S&P 500 time series with Haar
wavelet. The result is stored in the input array. To transform
it back, the method inverse
can be applied.
haar.inverse(sp500)
In case that you don't want to create the wavelet object
explicitly, the methods dwt
and idwt
can be used.
// Discrete wavelet transform.
def dwt(t: Array[Double], filter: String): Unit
// Inverse discrete wavelet transform.
def idwt(wt: Array[Double], filter: String): Unit
The wavelet shrinkage is a signal denoising technique based on the idea of thresholding the wavelet coefficients. Wavelet coefficients having small absolute value are considered to encode mostly noise and very fine details of the signal. In contrast, the important information is encoded by the coefficients having large absolute value. Removing the small absolute value coefficients and then reconstructing the signal should produce signal with lesser amount of noise. The wavelet shrinkage approach can be summarized as follows:
The biggest challenge in the wavelet shrinkage approach is finding an
appropriate threshold value. In this method, we use the universal threshold
T = σ sqrt(2*log(N))
, where N
is the length
of time series and σ is the estimate of standard deviation of the noise by the
so-called scaled median absolute deviation (MAD) computed from the high-pass
wavelet coefficients of the first level of the transform.
The class WaveletShrinkage
implements this process.
val d4 = wavelet("d4")
val smooth = sp500.clone()
WaveletShrinkage.denoise(smooth, d4)
val canvas = LinePlot.plot(sp500)
canvas.line(smooth, Color.BLUE)
Window(canvas)
Similar to dwt
method, wsdenoise
is
a function for wavelet shrinkage if you don't want to
creates the wavelet object explicitly.
// If the parameter soft is true, apply soft thresholding.
def wsdenoise(t: Array[Double], filter: String, soft: Boolean = false): Unit


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Class 10: Exam Review
Exam 1 is in class Wednesday.
Please read the cover sheet before the exam: Exam 1 Cover Sheet
Problem Set 3
Comments
(PDF in collab).
Practice Problems Comments
Quantum supremacy using a programmable superconducting processor, Google AI Quantum and collaborators. Leaked preprint, August 2019.
Class 9: Evaluation
Schedule Reminders: Problem Set 3 is due this Monday (2:59pm). Note the schedule change resulting from the interaction between fall break and the exam, which will be in class, Wednesday, 2 October. Slides Video TCS Chapter 5: Code as data, data as code The book assumes readers are already familiar with asymptotic operators, so doesn’t include a lot of explanation on this or exercises. You probably have also encountered these in other classes, but without a formal definition of their meaning (and possibly misused in confusing ways).PS2 Grades Posted
The grades for PS2 are now posted in Assignments on Collab. You will find your grades, comments, and an attached pdf of solutions with PS2 assignment Our grading policy for PS2 was the same as for PS1, but we reserve the right to change this policy for future assignments. That policy was: You earned an A if you got at least 80% 5’s or an average of at least 4.Class 8: Complexity
Schedule Reminders: Problem Set 3 is due this Monday (2:59pm). Note the schedule change resulting from the interaction between fall break and the exam, which will be in class, Wednesday, 2 October.
TCS Chapter 4: syntactic sugar
Preparing for Exam 1
Exam 1 will be next Wednesday, 2 October at the normal class time in the normal classroom. We will aim to start the exam right at 3:30pm, so you will benefit from arriving early for class Wednesday to be settled and ready to start the exam. Exam 1 will cover material from Classes 1-9 8 (through 25 23 September) [Note: we have revised the coverage scope to not include any new material from Class 9 on Exam 1], Problem Sets 1-3 (including the comments we provide on them; we will post comments for Problem Set 3 shortly after it is due on September 30), and the textbook chapters 0-4.Problem Set 3 Update
There are a few important updates to Problem Set 3. As originally stated, we believe Problem J2 is impossible. We have modified the problem to add the constant function ZERO to the gate set (which you can represent using 0 in Python. We believe it is impossible to solve without this. We have added an optional (double starred!) problem 5 to the PDF part of the assignment which asks you to prove that the question as originally asked (and in Exercise 3.PS1 Grades Posted
The grades for PS1 are now posted. We’re really sorry this took so long! Hopefully we have a process in place now that will be much faster and more reliable at grading and returning homeworks. Please look at the posted comments on PS1 in collab: [PDF] (only accessible to students in the class) When assigning grades we sought to reward individual solutions that were high quality and total submissions that were overall decent, while not harshly punishing mild mistakes or narrow misconceptions.Problem Set 3
Problem Set 3: Sugary Finite Computation Problem Set 3 is available here: ps3.pdf (you will also need the ps3.zip file described in the PDF). It is due on Monday, 30 September at 2:59pm. (Note the unusual due date and time. The schedule is unusual because of Exam 1, which will be held Wednesday, 2 October, in class.) The purpose of this assignment is to continue to develop your understanding of finite computation, focusing on the material in Chapter 4 of the textbook and what we cover in Class 7 and Class 8 and Class 9.Class 7: Syntactic Sugar
Class 7: Syntactic Sugar
Schedule Reminders: Problem Set 2 is due this Friday (4:19pm).
TCS Chapter 4: syntactic sugar
Class 6: Defining Boolean Circuits
Class 6: Defining Boolean Circuits
Schedule Reminders: Problem Set 2 is due this Friday (4:19pm).


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Módulo canvas
Visão geral
Funções
new
attrSize
attrColor
attrClip
attrCrop
attrFont
drawLine
drawRect
drawText
measureText
compose
flush