Class: ActiveSupport::Cache::FileStore
| Relationships & Source Files | |
| Super Chains via Extension / Inclusion / Inheritance | |
|
Class Chain:
self,
Store
|
|
|
Instance Chain:
self,
Store
|
|
| Inherits: |
ActiveSupport::Cache::Store
|
| Defined in: | activesupport/lib/active_support/cache/file_store.rb |
Overview
File Cache Store
A cache store implementation which stores everything on the filesystem.
Constant Summary
-
DIR_FORMATTER =
# File 'activesupport/lib/active_support/cache/file_store.rb', line 15"%03X"
-
FILENAME_MAX_SIZE =
# File 'activesupport/lib/active_support/cache/file_store.rb', line 16
max filename size on file system is 255, minus room for timestamp, pid, and random characters appended by Tempfile (used by atomic write)
226
-
FILEPATH_MAX_SIZE =
# File 'activesupport/lib/active_support/cache/file_store.rb', line 17
max is 1024, plus some room
900
-
GITKEEP_FILES =
# File 'activesupport/lib/active_support/cache/file_store.rb', line 18[".gitkeep", ".keep"].freeze
Store
- Inherited
Class Attribute Summary
-
.supports_cache_versioning? ⇒ Boolean
readonly
Advertise cache versioning support.
Store
- Inherited
Class Method Summary
- .new(cache_path, **options) ⇒ FileStore constructor
Store
- Inherited
| .new | Creates a new cache. |
| .retrieve_pool_options |
Instance Attribute Summary
- #cache_path readonly
Store
- Inherited
Instance Method Summary
-
#cleanup(options = nil)
Preemptively iterates through all stored keys and removes the ones which have expired.
-
#clear(options = nil)
Deletes all items from the cache.
-
#decrement(name, amount = 1, options = nil)
Decrement a cached integer value.
- #delete_matched(matcher, options = nil)
-
#increment(name, amount = 1, options = nil)
Increment a cached integer value.
-
#delete_empty_directories(dir)
private
Delete empty directories in the cache.
- #delete_entry(key, **options) private
-
#ensure_cache_path(path)
private
Make sure a file path’s directories exist.
-
#file_path_key(path)
private
Translate a file path into a key.
-
#lock_file(file_name, &block)
private
Lock a file for a block so only one process can modify it at a time.
-
#modify_value(name, amount, options)
private
Modifies the amount of an integer value that is stored in the cache.
-
#normalize_key(key, options)
private
Translate a key into a file path.
- #read_entry(key, **options) private
- #read_serialized_entry(key) private
- #search_dir(dir, &callback) private
- #write_entry(key, entry, **options) private
- #write_serialized_entry(key, payload, **options) private
- #inspect Internal use only
Store
- Inherited
| #cleanup | Cleans up the cache by removing expired entries. |
| #clear | Clears the entire cache. |
| #decrement | Decrements an integer value in the cache. |
| #delete | Deletes an entry in the cache. |
| #delete_matched | Deletes all entries with keys matching the pattern. |
| #delete_multi | Deletes multiple entries in the cache. |
| #exist? | Returns |
| #fetch | Fetches data from the cache, using the given key. |
| #fetch_multi | Fetches data from the cache, using the given keys. |
| #increment | Increments an integer value in the cache. |
| #mute | Silences the logger within a block. |
| #read | Reads data from the cache, using the given key. |
| #read_multi | Reads multiple values at once from the cache. |
| #silence, | |
| #silence! | Silences the logger. |
| #write | Writes the value to the cache with the key. |
| #write_multi |
|
| #_instrument, #default_serializer, | |
| #delete_entry | Deletes an entry from the cache implementation. |
| #delete_multi_entries | Deletes multiples entries in the cache implementation. |
| #deserialize_entry, | |
| #expanded_key | Expands key to be a consistent string value. |
| #expanded_version, #get_entry_value, #handle_expired_entry, #handle_invalid_expires_in, #instrument, #instrument_multi, | |
| #key_matcher | Adds the namespace defined in the options to a pattern designed to match keys. |
| #merged_options | Merges the default options with ones specific to a method call. |
| #namespace_key | Prefix the key with a namespace string: |
| #normalize_key | Expands and namespaces the cache key. |
| #normalize_options | Normalize aliased options to their canonical form. |
| #normalize_version, | |
| #read_entry | Reads an entry from the cache implementation. |
| #read_multi_entries | Reads multiple entries from the cache implementation. |
| #save_block_result_to_cache, #serialize_entry, #validate_options, | |
| #write_entry | Writes an entry to the cache implementation. |
| #write_multi_entries | Writes multiple entries to the cache implementation. |
| #new_entry |
Constructor Details
.new(cache_path, **options) ⇒ FileStore
# File 'activesupport/lib/active_support/cache/file_store.rb', line 20
def initialize(cache_path, ** ) super( ) @cache_path = cache_path.to_s end
Class Attribute Details
.supports_cache_versioning? ⇒ Boolean
(readonly)
Advertise cache versioning support.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 26
def self.supports_cache_versioning? true end
Instance Attribute Details
#cache_path (readonly)
[ GitHub ]# File 'activesupport/lib/active_support/cache/file_store.rb', line 13
attr_reader :cache_path
Instance Method Details
#cleanup(options = nil)
Preemptively iterates through all stored keys and removes the ones which have expired.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 40
def cleanup( = nil) = ( ) search_dir(cache_path) do |fname| entry = read_entry(fname, ** ) delete_entry(fname, ** ) if entry && entry.expired? end end
#clear(options = nil)
Deletes all items from the cache. In this case it deletes all the entries in the specified file store directory except for .keep
or .gitkeep
. Be careful which directory is specified in your config file when using FileStore
because everything in that directory will be deleted.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 33
def clear( = nil) root_dirs = (Dir.children(cache_path) - GITKEEP_FILES) FileUtils.rm_r(root_dirs.collect { |f| File.join(cache_path, f) }) rescue Errno::ENOENT, Errno::ENOTEMPTY end
#decrement(name, amount = 1, options = nil)
Decrement a cached integer value. Returns the updated value.
If the key is unset, it will be set to -amount
.
cache.decrement("foo") # => -1
To set a specific value, call #write
:
cache.write("baz", 5)
cache.decrement("baz") # => 4
# File 'activesupport/lib/active_support/cache/file_store.rb', line 75
def decrement(name, amount = 1, = nil) modify_value(name, -amount, ) end
#delete_empty_directories(dir) (private)
Delete empty directories in the cache.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 184
def delete_empty_directories(dir) return if File.realpath(dir) == File.realpath(cache_path) if Dir.children(dir).empty? Dir.delete(dir) rescue nil delete_empty_directories(File.dirname(dir)) end end
#delete_entry(key, **options) (private)
[ GitHub ]# File 'activesupport/lib/active_support/cache/file_store.rb', line 120
def delete_entry(key, ** ) if File.exist?(key) begin File.delete(key) delete_empty_directories(File.dirname(key)) true rescue # Just in case the error was caused by another process deleting the file first. raise if File.exist?(key) false end else false end end
#delete_matched(matcher, options = nil)
[ GitHub ]# File 'activesupport/lib/active_support/cache/file_store.rb', line 79
def delete_matched(matcher, = nil) = ( ) instrument(:delete_matched, matcher.inspect) do matcher = key_matcher(matcher, ) search_dir(cache_path) do |path| key = file_path_key(path) delete_entry(path, ** ) if key.match(matcher) end end end
#ensure_cache_path(path) (private)
Make sure a file path’s directories exist.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 193
def ensure_cache_path(path) FileUtils.makedirs(path) unless File.exist?(path) end
#file_path_key(path) (private)
Translate a file path into a key.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 178
def file_path_key(path) fname = path[cache_path.to_s.size..-1].split(File::SEPARATOR, 4).last URI.decode_www_form_component(fname, Encoding::UTF_8) end
#increment(name, amount = 1, options = nil)
Increment a cached integer value. Returns the updated value.
If the key is unset, it starts from 0
:
cache.increment("foo") # => 1
cache.increment("bar", 100) # => 100
To set a specific value, call #write
:
cache.write("baz", 5)
cache.increment("baz") # => 6
# File 'activesupport/lib/active_support/cache/file_store.rb', line 60
def increment(name, amount = 1, = nil) modify_value(name, amount, ) end
#inspect
# File 'activesupport/lib/active_support/cache/file_store.rb', line 90
def inspect # :nodoc: "#<#{self.class.name} cache_path=#{@cache_path}, <EMAIL_ADDRESS>end
#lock_file(file_name, &block) (private)
Lock a file for a block so only one process can modify it at a time.
#modify_value(name, amount, options) (private)
Modifies the amount of an integer value that is stored in the cache. If the key is not found it is created and set to amount
.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 211
def modify_value(name, amount, ) file_name = normalize_key(name, ) lock_file(file_name) do = ( ) if num = read(name, ) num = num.to_i + amount write(name, num, ) num else write(name, Integer(amount), ) amount end end end
#normalize_key(key, options) (private)
Translate a key into a file path.
# File 'activesupport/lib/active_support/cache/file_store.rb', line 151
def normalize_key(key, ) key = super fname = URI.encode_www_form_component(key) if fname.size > FILEPATH_MAX_SIZE fname = ActiveSupport::Digest.hexdigest(key) end hash = Zlib.adler32(fname) hash, dir_1 = hash.divmod(0x1000) dir_2 = hash.modulo(0x1000) # Make sure file name doesn't exceed file system limits. if fname.length < FILENAME_MAX_SIZE fname_paths = fname else fname_paths = [] begin fname_paths << fname[0, FILENAME_MAX_SIZE] fname = fname[FILENAME_MAX_SIZE..-1] end until fname.blank? end File.join(cache_path, DIR_FORMATTER % dir_1, DIR_FORMATTER % dir_2, fname_paths) end
#read_entry(key, **options) (private)
[ GitHub ]# File 'activesupport/lib/active_support/cache/file_store.rb', line 95
def read_entry(key, ** ) if payload = read_serialized_entry(key, ** ) entry = deserialize_entry(payload) entry if entry.is_a?(Cache::Entry) end end
#read_serialized_entry(key) (private)
[ GitHub ]#search_dir(dir, &callback) (private)
[ GitHub ]#write_entry(key, entry, **options) (private)
[ GitHub ]# File 'activesupport/lib/active_support/cache/file_store.rb', line 109
def write_entry(key, entry, ** ) write_serialized_entry(key, serialize_entry(entry, ** ), ** ) end
#write_serialized_entry(key, payload, **options) (private)
[ GitHub ]# File 'activesupport/lib/active_support/cache/file_store.rb', line 113
def write_serialized_entry(key, payload, ** ) return false if [:unless_exist] && File.exist?(key) ensure_cache_path(File.dirname(key)) File.atomic_write(key, cache_path) { |f| f.write(payload) } true end


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IN PICTURES: 2019 tt100 Business Awards Programme
The 2019 tt100 Business Awards took place on Thursday, 14 November at the Country Club in Johannesburg. Under the theme, “Leadership Lessons from Nature”, this year tt100 saw a total of 112 category finalists selected and from this, 28 category winners emerged. There was an increased number of small and emerging enterprises that took part this year as well as a number of entries from the informal sector.
There were eight categories namely the Management of Technology, the Management of Innovation, the Management of People and the Management of Systems. There was also the Sustainability as well as the Innovation Concepts category. Other categories include the Department of Science and Innovation Director-General Award for overall Excellence recognizing emerging and small enterprises as well as the Ministers award for Overall Excellence for medium and large enterprises.
Below are pictures of what transpired on the evening of the event:
By Fundisiwe Maseko


FlightSurety dApp
First class insurance is our first policy!
Flights
Enter Flight #:
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Get Flight Status:
Retrieve the Oracle Status
Buy insurance:
ETH
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--- layout: post status: publish published: true title: tech - AWS, Puppet and Docker author: display_name: neil login: neil email<EMAIL_ADDRESS>url: '' author_login: neil author_email<EMAIL_ADDRESS>wordpress_id: 163 wordpress_url: https://blog.mitese.co.uk/?p=163 date: '2016-10-21 18:11:20 +0000' date_gmt: '2016-10-21 17:11:20 +0000' categories: - Infrastructure tags: - masterless puppet - docker - t2.nano comments: [] ---
In my talk - Can Puppet help you run Docker on a T2.Micro? - You will learn the technologies we use to create environments from scratch every day.
A walk through a number of the key concepts of puppet; stages, Role and profile, hieradata and puppet forge, as well as a brief introduction to Docker.
Using these to explain a solution of running a puppet manifest to configure Amazon's smallest (Yes I've run this on a t2.nano too) server to run a docker containerised web service.
You will learn why puppet stages can be used to help in this solution, how roles and profiles are defined and used, and finally use of the puppet Forge with Hieradata to install and run docker containers.
This talk will contain links to code that can be used afterwards and I'll touch on what docker is and how to configure the puppet module to automatically run containers.
Come see me talk at Puppet Camp - 8th November 11:15 in London.


{% extends 'base.html' %} {% block title %}Fragforce{% endblock %} {% block pagetitle %}{% endblock %} {% block alert %} {# {% include 'layouts/central-alert.html' %} #} {% endblock alert %} {% block content %}
Fragforce is the global charity gaming team from Salesforce that is raising money to support kids facing scary stuff like social mistreatment and medical issues (i.e. cancer, cystic-fibrosise, accidents, etc). By rallying our friends, family, and co-workers, we are creating/facilitating a new philanthropic tradition to boost employee morale and support cross-team and community collaboration through a shared love of gaming.
Extra Life is a charity organization that is raising money to support Children's Miracle Network (CMN) hospitals across the country. Extra Life helps games to pledge to play games for 24 hours, and to solicit donations from their families and friends for CMN in the process.
Child's Play is an international charity organization that seeks to improve the lives of children in hospitals and domestic violence shelters through the generosity and kindness of the video game industry and the power of play.
Make a donation to Fragforce's Extra Life team by visiting the Extra Life page and searching for Fragforce, or just go to team.fragforce.org
Make a donation to Fragforce's Child's Play donation drive by visiting our donation campaign page
Sign up to participate in an event and raise money as you can to save kid's lives! Simply click the 'Join Team' link on the Extra Life team page for Fragforce at team.fragforce.org
International team members can raise money for Child's Play, join our Tiltify Team, and sign up to help run or participate in an international Fragforce event


{%block content%}
DriveSafe
Want to learn how to drive but not sure what roads are safe?
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{{ macro.package_name }}.{{ macro.name }}
adapter macro
macro
Description
Arguments
Referenced By
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This {{ macro.resource_type }} is not currently documented
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In this article you'll learn the various ways to bootstrap and configure Aurelia, along with different mechanisms for controlling the initial render strategy.
Components are the basic building blocks of all Aurelia applications. In this article you'll learn how to build basic components using dependency injection and the component lifecycle.
Learn about how to leverage Aurelia's dependency injection container, the power behind all object creation in Aurelia applications.
It's important to secure your application. This article will address a couple of simple things you can do to improve the security of your application.
Forgot the syntax for bindings? Need to know how to create a custom attribute? This article contains answers to questions like those as well as a bunch of quick snippets for common tasks.


public class PNGEncoder
extends java.lang.Object
This code is taken, with permission, from J. David Eisenberg (david@catcode.com), and is distributed under the Artistic License.
| Modifier and Type | Field and Description |
|---|---|
static int |
FILTER_NONE
Constants for filters
|
static int |
FILTER_SUB |
static int |
FILTER_UP |
| Constructor and Description |
|---|
PNGEncoder()
Class constructor
|
PNGEncoder(java.awt.Image image)
Class constructor specifying Image to encode, with no alpha channel encoding.
|
PNGEncoder(java.awt.Image image,
boolean encodeAlpha)
Class constructor specifying Image to encode, and whether to encode alpha.
|
PNGEncoder(java.awt.Image image,
boolean encodeAlpha,
int whichFilter)
Class constructor specifying Image to encode, whether to encode alpha, and filter to use.
|
PNGEncoder(java.awt.Image image,
boolean encodeAlpha,
int whichFilter,
int compLevel)
Class constructor specifying Image source to encode, whether to encode alpha, filter to use, and compression level.
|
| Modifier and Type | Method and Description |
|---|---|
int |
getCompressionLevel()
Retrieve compression level
|
boolean |
getEncodeAlpha()
Retrieve alpha encoding status.
|
int |
getFilter()
Retrieve filtering scheme
|
byte[] |
pngEncode()
Creates an array of bytes that is the PNG equivalent of the current image, specifying whether to encode alpha or not.
|
void |
setCompressionLevel(int level)
Set the compression level to use
|
void |
setEncodeAlpha(boolean encodeAlpha)
Set the alpha encoding on or off.
|
void |
setFilter(int whichFilter)
Set the filter to use
|
void |
setImage(java.awt.Image image)
Set the image to be encoded
|
public static final int FILTER_NONE
public static final int FILTER_SUB
public static final int FILTER_UP
public PNGEncoder()
public PNGEncoder(java.awt.Image image)
image
- A Java Image object which uses the DirectColorModelImage
public PNGEncoder(java.awt.Image image, boolean encodeAlpha)
image
- A Java Image object which uses the DirectColorModelencodeAlpha
- Encode the alpha channel? false=no; true=yesImage
public PNGEncoder(java.awt.Image image, boolean encodeAlpha, int whichFilter)
image
- A Java Image object which uses the DirectColorModelencodeAlpha
- Encode the alpha channel? false=no; true=yeswhichFilter
- 0=none, 1=sub, 2=upImage
public PNGEncoder(java.awt.Image image, boolean encodeAlpha, int whichFilter, int compLevel)
image
- A Java Image objectencodeAlpha
- Encode the alpha channel? false=no; true=yeswhichFilter
- 0=none, 1=sub, 2=upcompLevel
- 0..9Image
public void setImage(java.awt.Image image)
image
- A Java Image object which uses the DirectColorModelImage
,
DirectColorModel
public byte[] pngEncode()
encodeAlpha
- boolean false=no alpha, true=encode alphapublic void setEncodeAlpha(boolean encodeAlpha)
encodeAlpha
- false=no, true=yespublic boolean getEncodeAlpha()
public void setFilter(int whichFilter)
whichFilter
- from constant listpublic int getFilter()
public void setCompressionLevel(int level)
level
- 0 through 9public int getCompressionLevel()


| Name: MS.SUNITHA TAMULI | Reg No: 03-6SMHC19 |
|---|---|
| Age / Sex: 36/F | Contact No:<PHONE_NUMBER> |
| Marital Status: ML- 4 YEARS | Date:1/6/19 |
| Occupation: GNM | Dr. PJFP |
Address: NATIVE OF ASSAM. IN BLORE SINCE 1 YEAR. W/O: MANIKANDAN. PURCHASE MANAGER. |
DIAGNOSIS- |
PAIN IN THE LOW ABDOMEN FROM RT. TO RIGHT BACK. LIKE A LINE. SINCE 1 YEAR. GT THIS 3 TIMES.
PASSING URINE GETS PAIN AS IF SOMETHING WILL COME OUT PRICKING TYPE OF PAIN.
KEEPS GETTING SEVERE HEADACHE. MIGRAINE STARTED. < SUN ONE SIDE HEADACHE.
RIGHT SIDE LEG FULL PAIN AT TIMES.
CHLOASMA SINCE COMING TO BLORE.
AT TIMES CONSTIPATION.
RX:
NAT CARB 200 / FERR MET 200 – 4-4-4-4
LYCO 200 – MORNING 4 PILLS B/FOOD.
BERB VULGARIS 200 – 4 PILLS B/FOOD.
BERB VULGARIS Q/SARAPARILLLA Q/SOLIDAGO – 15-15-15-15 DROPS A/FOOD IN 100ML WATER.


Towards a Philosophy of Real Mathematics, by David Corfield, Cambridge U. Press, 2003, p. 206:
“Now, it is no easy business defining what one means by the term conceptual…. I think we can say that the conceptual is usually expressible in terms of broad principles. A nice example of this comes in the form of harmonic analysis, which is based on the idea, whose scope has been shown by George Mackey (1992) to be immense, that many kinds of entity become easier to handle by decomposing them into components belonging to spaces invariant under specified symmetries.”
For a simpler example of this idea, see the entities in The Diamond Theorem, the decomposition in A Four-Color Theorem, and the space in Geometry of the 4×4 Square. The decomposition differs from that of harmonic analysis, although the subspaces involved in the diamond theorem are isomorphic to Walsh functions– well-known as discrete analogues of the trigonometric functions of traditional harmonic analysis.


The Florida Power & Light Company wants a virtual reality training software that will assist in training their employees. This software will specifically be used to teach employees how to:
The Florida Power & Light Company also wants the ability to quiz their employees to see if they can correctly identify equipment and rate the damages on the equipment using a five point scale.
Upon starting the application, the trainee will have the option to:
In all of these options, the trainee will be walking around the poles from the ground.
"The Smart Grid team “Keeping up with Innovation” brought home the Changing the Current award this year. This goes to show how far ingenuity, strong partnerships and engagement are taking the Power Delivery team!
A big thank you to a great team, our partners, and to the UCF students with their super innovative projects!!!"


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{{summary}} Online Distance: 3 miles
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{% for item in dreamlist %}
{{item[0]}}
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{% endfor %}


York University Student Centre / CannonDesign
- Curated by Paula Pintos
- about 11 hours
Student Hall · Toronto, Canada
- version="1.0" encoding="UTF-8"? Architects: CannonDesign
- AreaArea of this architecture projectArea: 11705.7 ft2
- version="1.0" encoding="UTF-8"?YearCompletion year of this architecture project Year: 2018
- version="1.0" encoding="UTF-8"?PhotographsPhotographs: Tom Arban Photography, Connie Tsang
- version="1.0" encoding="UTF-8"?ManufacturersBrands with products used in this architecture project Manufacturers: AutoDesk, Doors, Insulation, Roofing, Steel
- Clients York University
- Engineering MCW Consultants (Mechanical) Read Jones Christoffersen (Structural) R. V. Andersen Associates (Civil)
- Landscape Scott Torrance Landscape
- Contractor EllisDon
More Specs Less Specs
Text description provided by the architects. York University, Canada’s third-largest university, created a second student center on campus, designed to respond to the changing needs of York’s large and diverse community. The project is the result of a 2013 referendum in which the student body voted in favor of a second building devoted solely to student space. The referendum secured the highest voter turnout in the history of Canadian post-secondary institutions, with approximately 90% of students voting in favor.
Conceived as a “living room” for student life and designed in complete collaboration with York’s diverse student body, the building is remarkably inclusive for students of all faith, race and creed. It stands as a model for other institutions as it reduces stigma to help students connect and thrive. Just some of the building’s dynamic features include: The top floor offers a large multi-faith prayer space where students of all religions are welcome to hold service and pray. The space is used regularly by all faiths without conflict and has even served as a recruitment tool for students of faith
A food pantry in the lower level of the building serves students facing food insecurity. A wellness clinic in the building is open to all students who may need someone to talk to, self-harm reduction tools and training, quiet time, mental health counseling recommendations and more. Moreover, feminine hygiene products are available for free in all of the centre’s bathrooms. A bustling club space connects students from all different student clubs.
Just a few we spoke with on a recent visit include: Hallyu Dongari (students interested in Korean culture); Middle Eastern Student Organizations, the Latin American club and numerous others. The building is a hub for student activity, hosting movie nights, socials and Multicultural Week which features international dance and food competitions annually. There are dance studios on the ground floor. It is not uncommon to see different international dances being practiced steps from the multi faith prayer space on any given day. Rooted in safety design principles that embrace natural light, maximized sight lines and more, there is not a single space where one should feel unsafe in the building.
Located at the north end of a significant campus green, the student center’s central location makes it easily accessible to the 50,000 students who attend classes on campus. The design includes an array of sustainable and user-led initiatives, including bicycle parking, showers, green roofs, high-performance glazing/curtain wall, gender-neutral washrooms, and extensive use of natural lighting to promote principles of community safety, accessibility and environmental sustainability. A primarily transparent building façade acts as a design response to the student body’s desire to be open and welcoming to all.


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The Digital Gold Institute is a research and development center, focused on teaching, consulting, and advising about scarcity in digital domain (bitcoin and crypto-assets) and blockchain technology.
We explore the foundations and can assist you in understanding them: cryptography, game theory, networking and data transmission, economic and monetary theory.
Follows us and get in touch: the times they are a-changin'.


February 01, 2020 — Josh
I love February. I woke up quite early today and I was in a good mood, so I wrote this;


Police say the 51-year-old confronted one of the two women when she first tried to take items without paying.
When they began fighting, the second woman went behind the counter, took vaping mini packs, and ran off.
It happened at 8:30 a.m. on November 12 at the Seven Day Convenience Store in Homecrest.
The worker was not seriously injured.
Anyone with information in regard to the identities of the females is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).


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Adam Sorrenti, #500903848
What I want to learn in CPS530:
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This is my personal site hosted at cs.ryerson.ca :


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WITNESS LIST
Transportation
April 22, 2015 8:00 AM
FOR:
Landers, Paul Chairman LTF (Nat'L Coalition of Motorcyclists- US Defenders),
Georgetown, TX
Stoody, Andy Chapter Represenative (Arlington Chapter Texas ABATE Confederation),
Keller, TX
Registering, but not testifying:
FOR:
Barber, Phil President (Rough Riders Riding Club-US Defenders), Kingwood, TX
Bartlett, Owen (US Defenders), Waco, TX
Blackett, Ronald President (Blackett Arms Motorcycle Club/ US Defenders), Pflugerville,
TX
Brown, Wesley S. (Texas Legislative Strike Force/ C.O.I.R./ US Defenders), Georgetown,
TX
Bryant, David Assistant Coordinator (Texas ABATE Confederation/ U.S. Defenders),
Silsbee, TX
Cooper, Charles Secretary (Calaveras M.C.), RR, TX
Davis, Kelly Defender (COCI), Hillsboro, TX
Lynch, Mike Defender (Tex. Legislative Strike Force US Defenders), Mart, TX
Lynch, Sandra Sec/Trea. (Legislative Strike Force, US Defenders, COC & I), Mart, TX
Myers, Larry (TCOC), Waxanachie, TX
Myers, Rebecca Jo (TCOC), Waxahachie, TX
Pitts, Johnny (COC & I, US Defenders Legislative Strike force), Waxanchie, TX
Venable, James (COC & I), Mart, TX
Wells, Richard (Self), Leander, TX
ON:
Hester, Jason Major (Texas Dept. Of Public Safety), Austin, TX
Hudson, Denise CFO (Tx Dept of Public Safety), Austin, TX
FOR:
Olivo, Nelda Dir. of Govt Affairs (also providing written testimony) (Port of Corpus
Christi), Corpus Christi, TX
Registering, but not testifying:
FOR:
Bushell, Gary Attorney (Alliance for I-69 Texas), Austin, TX
FOR:
Dunn, Monty Owner (US Custom Harvestors and 4-D Trucking Harvesting), Childress, TX
Registering, but not testifying:
FOR:
McWilliams, Dean Consultant (US Custom Harvesters Inc.), Austin, TX
Neely Jr, Osan Owner/Operator (US Custom Harvesters Assn), Austin, TX
Pacheco, Michael Associate Legislative (Texas Farm Bureau), Austin, TX
WITNESS LIST
Transportation
April 22, 2015 8:00 AM
Tufts, Kyle Custom Harvester (US Custom Harvesters, Inc.), Hillsboro, TX
ON:
Archer, Jimmy Director, Motor Carrier (Tx Dept of Motor Vehicles), Austin, TX
McKee, Scott Permit Section Supervisor (TxDMV), Austin, TX
FOR:
Findeisen, Les Director of Policy (Texas Trucking Association), Austin, TX
Registering, but not testifying:
FOR:
Tarlton, Patrick Director of Gov't Affairs (Texas Chemical Council), Austin, TX
ON:
Archer, Jimmy Director, Motor Carrier Div (Tx Dept of Motor Vehicles), Austin, TX
McKee, Scott Permit Section Supervisor (TxDMV), Austin, TX
Melecki, Meredith Supervisor (Legislative Budget Board), Austin, TX
Registering, but not testifying:
FOR:
Elfant, Bruce Travis County Tax Assessor (Travis County Tax Assessor), Austin, TX
Mendez, Mark Assistant County Administrator (Tarrant County), Ft. Worth, TX
Warndof, Donna Director, Office of Leg. Relations (Harris County), Houston, TX
Registering, but not testifying:
FOR:
Bushell, Gary Attorney (Alliance I-69 Texas), Austin, TX
FOR:
Allison, Jim General Counsel (County Judges and Commissioners Assn. of TX), Austin,
TX
Fowler, Daryl County Judge (Dewitt, Gonzales, Karnes, McMullen Counties), Cuero, TX
Registering, but not testifying:
FOR:
Acevedo, Adrian Dir. Govt. Rel. (Anadarko Petroleum Corp), Austin, TX
Esparza, Servando Manager, Gov Affairs (Texas Independent Producers and Royalty
Owners), Austin, TX
Lee, Donald Executive Director (Texas Conference of Urban Counties), Austin, TX
Mendez, Mark Assistant County Administrator (Tarrant County), Ft. Worth, TX
Salinas, Nelson Govt. Affairs Manager (The Texas Assoc. of Business), Austin, TX
Thompson, Rick Leg Liaison (Tx Association of Counties), Austin, TX
FOR:
Garza, Raudel CEO (Harlingen Economic Development Corp.), Harlingen, TX
Smith, Walker Executive Director (Port of Harlingen Authority), Harlingen, TX
WITNESS LIST
Transportation
April 22, 2015 8:00 AM
Registering, but not testifying:
FOR:
Aleman Jr., Ramiro Industrial Dev. MGR (Harlingen EDC, Harlingen Manufacturer's Ass.
Harlingen Industrial Foundation), Harlingen, TX
Bushell, Gary Attorney (Alliance for I-69 Texas), Austin, TX
Garza, Lyle Secretary (Harlingen Area Chamber of Commerce), Harlingen, TX
Sullivan, Ray (Cameron County Regional Mobility Authority), Austin, TX
Younger, Kevin Consultant (Port of Harlingen), Austin, TX
Registering, but not testifying:
FOR:
Esparza, Servando Manager Government Affairs (Texas Independent Producers and
Royalty Owners Association), Austin, TX
Fowler, Daryl County Judge (Dewitt, Gonzales, Karnes, McMullen Counties), Cuero, TX
Salinas, Nelson Govt Affairs Manager (The Texas Assoc. of Business), Austin, TX
ON:
Goodin, Ginger Sr. Research Engineer (Texas A&M Transportation Institute), Austin, TX
AGAINST:
Hall, Terri Founder/ Director (Texas TURF and Texans for Toll-free Highways), San
Antonio, TX
ON:
Goodin, Ginger Sr. Research Engineer (Texas A&M Transportation Institute), Austin, TX
Moore, Meg (TxDOT), Austin, TX
Registering, but not testifying:
FOR:
Newton, Jennifer Director- Govt. Affairs (AGC of Texas), Austin, TX
AGAINST:
Dixon, Don P. Engineer (Self), San Antonio, TX
FOR:
Reyes, Steve (Deaf Community), TX
Rodriguez, Claudia (Deaf Community), San Antonio, TX
ON:
Chiodo, Kay CEO (Deaf Link, Inc.), S.A., TX
Registering, but not testifying:
ON:
Kuntz, Jeremiah Director of Vehicle Titles and Registration (TxDMV), Austin, TX


The best and worst moments for the party leaders on Question Time
Jeremy Corbyn, Nicola Sturgeon, Jo Swinson and Boris Johnson will appear on the BBC discussion show on Friday night.
Here are the best and worst moments from the appearances of the four main party leaders on Question Time.
Jeremy Corbyn
Best
Jeremy Corbyn’s climate change plans for a Green Industrial Revolution were well received by the audience.
He told Question Time that a Labour government on the international stage would work with others to get to net-zero carbon emissions – but did not specify a date.
Worst
Audience members groaned as Mr Corbyn failed to say whether he would support Leave or Remain in a second referendum, instead saying he would adopt a neutral position.
The Labour leader also faced tough lines of questioning on his nationalisation plans, socialist policies and record on handling anti-Semitism in the party, with one audience member asking if “businesses should be frightened of an incoming Labour government”.
Nicola Sturgeon
Best
The SNP leader said she would never put a Conservative prime minister into power – saying she could “not in good conscience” ever put Boris Johnson into Number 10.
Audience members whooped in support at Ms Sturgeon’s stance, and she suggested she would support a Labour minority government if certain conditions were met.
Worst
Ms Sturgeon faced tough questions about her desire for Scottish independence, with one audience member asking how she would explain her plan to break up the UK to those who fought and died to protect Britain in the Second World War.
The audience member was loudly applauded, but Ms Sturgeon said the closest ties between the nations would always be close – adding: “I don’t believe independence for Scotland is turning our backs on that.”
Jo Swinson
Best
Jo Swinson ruled out propping up a Conservative government led by Boris Johnson, saying the party was “off with Nigel Farage” and “so far off the chart”.
She won loud applause as she ruled out the coalition, and has previously said Liberal Democrat votes would not put Jeremy Corbyn into Number 10.
Worst
One audience member claimed the Liberal Democrats’ name was now a “misnomer” because of their plan to revoke Article 50 and reverse the Brexit vote – as she faced a series of tough questions about the policy from both Remain and Leave supporters.
Ms Swinson was also repeatedly challenged on her record in government and support for austerity policies, with one audience member asking her if she regretted voting with the Tories on “harsh and uncaring benefit cuts”.
Boris Johnson
Best
The Prime Minister succeeded in turning the debate to his central pledge to “get Brexit done” despite being asked about different issues.
Mr Johnson managed to shoehorn his promise to get the UK out of the EU with a deal on January 31 – a key tenet of the Conservative plan for government.
Worst
A question on how important it is for people in positions of power to tell the truth had audience members laughing – with Mr Johnson saying trust is “central” to the election.
There were several groans too when he tried to defend himself as he was challenged on his use of language on women who wear the burka.


2007
2007 January 12th by todd anderson
First off… best new years ever – Amsterdam. Beautiful city. Would move there in a New York minute…
What will come of this new year? I’ve been insanely busy with work and my wonderful family.  I’ve been wanting to sink my teeth into something for a little while now, and am proud of my personal and professional work of 2006, but i’m stumbling around wanting something that will click.
I got heavily into Red5 prior to the new year and was having a blast. It actually led into working more with Java and Flex – which makes Red5 a gateway drug – but I don’t want to show anything because i’m too much of a perfectionist and i don’t think it’s quite right… bah. Got a MAKE Controller for the holidays, and only just two days ago set it up… hopefully more will come of that – big ups to Josh Noble who’s gonna hear my incessant questions.
I dunno. I’m just searching for something… and part of it probably has to do with experiencing a new culture and the passing of someone i held dear to my heart and thought the world of.


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MEDICAL DISCLAIMER
- the medical information on this website will be constantly available, or available at all;
- the medical information on this website is complete, true, accurate, up-to-date, or non-misleading.
Top
Copyright © 2015 - 2016 Richard D. Boyce
All Rights Reserved


--- layout: post title: Bangalore is 14,483,470 Meters from Atlanta, GA According to Car Finder date: 2010-03-22 18:11:01.000000000 -07:00 type: post published: true status: publish categories: [] tags: [] meta: {} author: ---
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Above and Beyond
Ray Tracing
Many of the shaders on shadertoy look like 3d scenes. But shadertoy only lets you modify the fragment shader: the geometry of these shaders is always a rectangle (two triangles) stuck up against the camera. Any 3d effects are implemented by implementing a 3d rendering engine in the fragment shader. Often times, this is a ray tracing type algorithm: for every pixel on the screen, the shader fires a virtual ray of light (sometimes many) backwards until it hits the scene, potentially following backwards as it is reflected or refracted.
There are several ways of figuring out where a ray hits a scene:
- For scenes made up of small amounts of basic geometry, finding where a line intersects a sphere, etc is a simple math equation, which gets tested for each object in the scene to see which is the closest hit by the ray. The ray can be reflected deterministically according to another equation, or nondeterministically to simulate lots of light rays. See an example here.
- For scenes made up of volumetric effects like clouds, it makes sense to move the ray discrete steps forward, checking at each step whether the ray is passing through the cloud and calculating how that should contribute to the final color of that pixel. See an example here.
- For complex scenes, keeping track of a formula for computing the distance from any point to the scene makes it possible to traverse empty space with large steps. See an example in this video.
Dr. Karoly Zsolnai-Feher has a series of online course lecture videos on ray tracing.
Shadows
We've talked about lighting surfaces differently based on the direction to the light source, but these surfaces can't yet cast shadows on other surfaces. A common algorithm for this is to first render the scene from the perspective of the light source just to create a z-buffer. This rendered z-buffer image is passed as a uniform to the real scene renderer. For each point in the scene, we use basic matrix transformations to compute where it shows up from the light-camera's perspective, that is, what pixel on the light's z-buffer this point corresponds to. If the distance from the point to the light is that z-buffer distance, we've found the closest point to the light in that direction, so the pixel is lit. Otherwise, there is a closer piece of geometry in that direction, so the pixel is in shadow. You can see these z-buffers in action here.
These z-buffers can then be used for more advanced operations such as crepuscular lighting, as in this example.
Convolution
As we've seen, images are just stored in the computer as large arrays of numbers, in other words, vectors. By comparing the dot product of two of these vectors to the lengths of these vectors (i.e. computing the angle between these vectors in incredibly high-dimensional space), we can determine how similar two images are on a pixel-by-pixel basis.
This isn't particularly useful when applied to entire pictures, because it can only detect pixel-by-pixel similarity and not other types of similarity of images. However, when applied at a small scale, we can use this technique to identify portions of images that look like edges, or apply other filters to images.
- Computerphile has a video on the Sobel Edge detector.
- Computerphile also has a video on using this technique to perform a blur operation.
- Grant Sanderson also has a video on using this technique.
- This technique is called convolution, and forms the foundation of convolutional neural networks, which are used to:
Light-Fields
Normal cameras record all of the rays of light that hit a particular point in space (the focal point of the camera) and record the direction of each of those rays. Light-field cameras record all of the rays of light that hit a particular surface in space, and record the direction of each of those rays. In reality, this is usually done with a sphere with many cheap cameras mounted to its surface, or taking pictures with the same camera from lots of different perspectives. This is a lot more data than what is captured by just one camera, but this makes it possible to reconstruct the view from anywhere in the sphere by tracing which rays of light would hit the observer if allowed to continue into the sphere.
You can see this in action in real-time here.
LODs
A common technique in computer graphics is to use lower Level of Detail (LOD) models and textures far away from the camera.
- You can see how to implement this in THREE.js in the source code of this example.
- Unreal Engine's Nanite Technology is an advanced approach to LOD.
- Craig Perko has a video on voxel octrees, the way of dealing with LOD in voxel-based worlds.
Noise
A common tool in computer graphics is creating realistic randomness, for textures and terrain heightmaps.
- The Book of Shaders has some interactive shaders exploring noise
- Perlin Noise is a common form of noise for computer graphics.
- Inigo Quilez talks about generating a landscape by combining a deterministic randomness function (note that shaders must be deterministic: any randomness must be passed to them as a uniform or vertex attribute) with smaller rotated copies of itself in his Painting a Landscape with Maths video.
- Jasper describes how noisy textures are used to produce effects in Super Mario Galaxy 2 in this video.
Further Resources
- Adrian Courreges has compiled a large list of analyses of scenes in real video games.
- Freya Holmer's Shaders for Game Devs video series covers a wide variety of basic shaders in HLSL, another language for writing shaders. She also has other math for game dev videos on her channel.
- Two Minute Papers' youtube channel covers a wide variety of computer-research papers, but often focuses on computer graphics and light transport.
- The Game Developers Conference covers a wide variety of topics, including graphics. For instance, you can find a talk on 3D Geometry here.
- The SIGGRAPH conference often leads to youtube videos presenting cutting-edge graphics research. You can see a sample of these videos here.
- noclip.website allows you to view a wide variety of video game levels with a free camera.
- Inigo Quilez has some videos on rendering scenes in a fragment shader.
- Martin Donald has a few videos on a few shader tricks.


Welcome to Fullstack Course
About Course
Front-end web development is everything involved in programming the user interface of a web application. Typically it refers to the Hyper text Markup Language(HTML), Cascading Style Sheets(CSS) and Java Script portion of web site production as opposed to the database or server side programming. It encompasses everything from buliding a simple page of html text to creating complex,responsive HTML5 websites designed to be accessed via various different browsers , devices and screen sizes.
Tools used for front-end development
Here are several tools and platforms (wordpress, magento etc..) available that can be used to develop the front end of a website, and understanding which tools are best fit for specific tasks marks the difference between developing a hacked site and a well designed, scalable site.Hyper Text Markup Language (HTML)
Cascading Style Sheets (CSS)
JavaScript(JS)
Bootstrap 4
List of Practicals
| FullStack Live Practical Book | ||||
|---|---|---|---|---|
| # | Practical Name | Link | Status | Tools |
| 1 | Create a web page including HTML basic skeleton using Offline HTML Editor and Online Sandbox Environment | practical-1 | Checked | edit delete |
| 2 | Live Your First Web-Page on Git-Hub. | practical-2 | Checked | edit delete |
| 3 | Create a web page showing a basic html structure using character Entities and Span Tag. | practical-3 | Checked | edit delete |
| 4 | Create a Website having list of all practical and their individual practical Page links. | practical-4 | Checked | edit delete |
| 5 | Introduction to image link and image map. | practical-5 | Checked | edit delete |
| 6 | Create Following layout using CSS Layout properties. | practical-6 | Checked | edit delete |
| 7 | Create a web layout using div tag | practical-7 | Checked | edit delete |
| 8 | Create a Web Page having Fixed Navigation Bar with the defined content. | practical-8 | Checked | edit delete |
| 9 | Create a Complete Responsive webpage using CSS properties. | practical-9 | Checked | edit delete |
| 10 | Create a Complete Responsive Side-bar using CSS properties. | practical-10 | unchecked | edit delete |
| 11 | Create a Table that represent Live Practical Book Records . | practical-11 | Unchecked | edit delete |


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New York City is made up of five boroughs which include Queens, Manhattan, Brooklyn, the Bronx, and Staten Island. The city is the home of approximately 8 million people. In 1876, France gifted the City of New York what is known as the Statue of Liberty, which is currently located on Ellis Island commonly visited by tourists. However, it took 10 years to assemble and therefore wasn’t unveiled until 1886. Another tourist destination is Times Square. Times Square is commonly known for the big buildings, Broadway shows, and bright neon signs. This famous location was named after The New York Times after the Times moved to that location. Prior to that, it was named Longacre Square. New York City is also known for its bridges that connect the boroughs and allow ease of transportation.
The Scenery in NYC
While the view in the city is beautiful, the sounds are not as lovely. Below you'll see an example of the view and the sounds you'll deal with in NYC on a daily basis.


{% extends "base.html" %} {% load widget_tweaks %} {% block title %} Contact {% endblock title %} {% block content %} Contact us The flight you are looking for is not available right now. We can notify you if the flight is available. Leave a message and we will contact you very soon. {% csrf_token %} {{ form.name.label_tag }} {{ form.name|attr:"autofocus" }} {{ form.email.label_tag }} {{ form.email }} {{ form.message.label_tag }} {{ form.message|attr:"rows:5"|attr:"cols:40" }} Send {% endblock content %}


YOU CAN'T AFFORD TO BE LEFT BEHIND
In 1986, we started a pizza place that brought the tastes, language and vibe from our Latino culture and called it Pizza Pizza. It was a pizza shop where it didn’t matter where you came from (or how long you’ve been here), where a diverse history could be celebrated. Soon after, we changed our name to Donatos Pizzeria and a legacy was born.
We quickly became a neighborhood favorite. Bringing our obsession to better tasting pizza, one-of-a-kind style, and commitment to serve every community with fresh ingredients and flavors from our culture. People like the better taste of our pizza, our unique style, and our approach to the pizza industry. As the nation digested our unique way of serving every community with a handmade pizza, we franchised our stores and brought Donatos pizzeria to the whole country.
Deceptively simple, the Margherita pizza is made with basil, fresh mozzarella, and tomatoes. There’s a reason it’s an Italian staple and one of the most popular types of pizza in the country.
When you want to jazz up your cheese pizza with color and texture, veggies are the perfect topping. And you’re only limited by your imagination. Everything from peppers and mushrooms, to eggplant and onions make for an exciting and tasty veggie pizza.
It should be no shocker that a classic is the statistical favorite. Cheese pizza is one of the most popular choices. It will always be a simple, unadorned masterpiece on its own.


Spring and Spring Boot
Spring is a lightweight Java EE application framework used to build applications and framework of frameworks because it provides support to various frameworks
such as JSP, Hibernate, etc. Spring framework helps to create loosely coupled applications.
The primary feature of the Spring framework is dependency injection(Dependency Injection (DI) is a design technique
that removes dependencies from computer code, making the application easier to maintain and test).
Problems with Spring
Huge Framework
Multiple setup steps
Multiple configuration steps
Boilerplate configurations required for setting up a Spring application
Multiple build and deploy steps
Spring boot makes it easy to create stand-alone,production grade spring based applications that you can "just run".
Spring Boot is basically an extension of the Spring framework, which eliminates the boilerplate configurations required for setting up a Spring application.
Opinionated ‘starter' dependencies to simplify the build and application configuration
Embedded server to avoid complexity in application deployment
Metrics, Health check, and externalized configuration
Automatic config for Spring functionality – whenever possible
Spring Boot provides support for the in-memory database such as H2
The primary feature of the Spring Boot is Autoconfiguration. Spring Boot autoconfiguration is a method of automatically configuring a
Spring application based on the Jar dependencies that you have added.
Autoconfiguration can speed up and simplify development by removing the need to define some beans that are part of the auto-configuration classes.
Opinionated:
Spring Boot just decides on a set of default configured beans which you can override if you want.
For example if you include the spring boot starter pom for jpa, you'll get auto-configured for you an in memory database, a hibernate entity manager,
and a simple data source. This is an example of an opinionated (Spring's opinion that it's a good starting point) default configuration that you can override.
Bill of Material:
The preset list of possible combination of jars that work well without any issue is called bill of material.
There are certain combination of jars and their version that work well and approved by the Spring boot.
So all we need to do is pick that version of that list and we get all the preset value with it so we don’t have to worry about individual version numbers anymore.
We just need to have version of the parent only
Embedded Tomcat Server:
Convenience: Don’t have to download and install and all.
Servlet Container Config is now application config: In tomcat we also need to do some default configuration,
but with tomcat embedded we don’t have to do it as this is part of the application config. Because everything is in one package.
Useful for micro services architecture: We don’t have to do additional steps to deploy each micro services separately.
CrudRepository:
Having default CRUD operation we have to just call the same.
However if we want some new methods we have to declare the correct method name without implementing the same.
Example: If I need to search courses by topic Id and there is a reference of topic class in course class, then the method declaration would be like,
FindBy
@Controller vs @RestController
@Controller is used to create web controllers that return views, which is further resolved by view resolver,
while @RestController is used to create web services that return JSON or XML data.
@RestController is a convenience annotation that does nothing more than adding the @Controller and @ResponseBody annotations
The @ResponseBody is activated by default when @RestController is used. You don't need to add it above the function signature.
With @RestController it will automatically convert the return object to JSON format or list or retun objects to JSON format,
we don’t have to explicitly mention the return type.
@SpringBootApplication vs @EnableAutoConfiguration
@EnableAutoConfiguration annotation tells Spring Boot to "guess" how you will want to configure Spring,
based on the jar dependencies that you have added. For example, If HSQLDB is on your classpath and you have not manually configured any database connection beans,
then Spring will auto-configure an in-memory database.
@ComponentScan tells Spring to look for other components, configurations, and services in the specified package. Spring is able to auto scan,
detect and register your beans or components from pre-defined project package. If no package is specified current class package is taken as the root package.
If you need Spring boot to Auto configure every thing for you @EnableAutoConfiguration is required. You don't need to add it manually,
spring will add it internally for you based on the annotation you provide.
@SpringBootApplication annotation is equivalent to using @Configuration, @EnableAutoConfiguration and @ComponentScan with their default attributes.
@Configuration vs @Component
@Configuration Indicates that a class declares one or more @Bean methods and may be processed by the Spring container to generate bean
definitions and service requests for those beans at runtime.
@Component Indicates that an annotated class is a "component". Such classes are considered as candidates for auto-detection when using annotation-based
configuration and classpath scanning.
@Configuration is meta-annotated with @Component, therefore @Configuration classes are candidates for component scanning
But you do can create i.e MyConfiguration.java class then stereotype with @Component and add @Beans declaration to it. In this way it will looks as a configuration,
main difference is that when annotated class with @Configuration @Bean annotated methods are proxy using CGLIB which made in code calls after the first one to
return bean from context instead of execute method again and create another instance as happens when using @Component with @Bean
The @Produces Annotation
The @Produces annotation is used to specify the MIME media types or representations a resource can produce and send back to the client.
If @Produces is applied at the class level, all the methods in a resource can produce the specified MIME types by default. If it is applied at the method level,
it overrides any @Produces annotations applied at the class level.
If no methods in a resource are able to produce the MIME type in a client request, the Jersey runtime sends back an HTTP “406 Not Acceptable” error.
The value of @Produces is an array of String of MIME types. For example:
@Produces({"image/jpeg,image/png"})
@Produces({"application/xml", "application/json"})
The @Consumes Annotation
The @Consumes annotation is used to specify which MIME media types of representations a resource can accept, or consume, from the client.
If @Consumes is applied at the class level, all the response methods accept the specified MIME types by default. If @Consumes is applied at the method level,
it overrides any @Consumes annotations applied at the class level.
If a resource is unable to consume the MIME type of a client request, the Jersey runtime sends back an HTTP “415 Unsupported Media Type” error.
The value of @Consumes is an array of String of acceptable MIME types. For example:
@Consumes({"text/plain,text/html"})
Jackson Annotations
The @JsonIgnore annotation marks a field in a POJO to be ignored by Jackson during serialization and deserialization.
Jackson ignores the field in both JSON serialization and deserialization.
The @JsonIgnoreProperties annotation is used at the class level to ignore fields during serialization and deserialization.
The properties that are declared in this annotation will not be mapped to the JSON content.
Example: @JsonIgnoreProperties({"userId","gender"})
The @JsonIgnoreType annotation is used to mark a class to be ignored during serialization and deserialization.
It marks all the properties of the class to be ignored while generating and reading JSON.
The @JsonAutoDetect annotation is used at the class level to tell Jackson to override the visibility of the
properties of a class during serialization and deserialization.
Annotations
@ResponseBody annotation in the method level, Spring will convert the return object in to the http response body.
@ResponseEntity works similar as @ResponseBody annotation. But when you create ResponseEntity object, you can add the response header to the http response as well.
If you use ResponseEntity as return object, then you don’t need to use @ResponseBody annotation.
@RequestBody annotation aside the parameter in a method, Spring will convert the http request body to that declare class type in the method signature.
@HttpEntity works smilar as @RequestBody annotation. Plus you can access the http header from HttpEntity object, which @RequestBody annotation doesn’t offer.
If you use HttpEntity as parameter object, then you don’t need to use @RequestBody annotation.
@Autowired and @Inject
Matches by Type
Restricts by Qualifiers
Matches by Name
@Resource
Matches by Name
Matches by Type
Restricts by Qualifiers (ignored if match is found by name)
Which annotations (or combination of) should I use for injecting my beans?
Explicitly name your component [@Component("beanName")]
Use @Resource with the name attribute [@Resource(name="beanName")]
Why should I not use @Qualifier?
Avoid @Qualifier annotations unless you want to create a list of similar beans. For example you may want to mark a set of rules with a specific @Qualifier annotation.
This approach makes it simple to inject a group of rule classes into a list that can be used for processing data.
Does bean injection slow my program?
Scan specific packages for components [context:component-scan base-package="com.sourceallies.person"]. While this will result in more component-scan configurations it reduces
the chance that you’ll add unnecessary components to your Spring context.
@Bean To declare a bean, simply annotate a method with the @Bean annotation. When JavaConfig encounters such a method, it will execute that method and register the
return value as a bean within a BeanFactory. By default, the bean name will be the same as the method name.
@Component is an annotation that allows Spring to detect our custom beans automatically.
In other words, without having to write any explicit code, Spring will:
Scan our application for classes annotated with @Component
Instantiate them and inject any specified dependencies into them
Inject them wherever needed
< context:component-scan > only scans @Component and does not look for @Controller, @Service and @Repository in general.
They are scanned because they themselves are annotated with @Component
@Controller
The @Controller annotation indicates that a particular class serves the role of a controller. The @Controller annotation acts as a stereotype for the annotated class, indicating its role.
What’s special about @Controller?
We cannot switch this annotation with any other like @Service or @Repository, even though they look same. The dispatcher scans the classes annotated with @Controller
and detects methods annotated with @RequestMapping annotations within them. We can use @RequestMapping on/in only those methods whose classes are annotated with
@Controller and it will NOT work with @Component, @Service, @Repository etc...
@Service
@Service beans hold the business logic and call methods in the repository layer.
What’s special about @Controller?
Apart from the fact that it's used to indicate, that it's holding the business logic, there’s nothing else noticeable in this annotation; but who knows, Spring may add some additional exceptional in future.
@Repository
This is to indicate that the class defines a data repository.
What’s special about @Controller?
In addition to pointing out, that this is an Annotation based Configuration, @Repository’s job is to catch platform specific exceptions and re-throw them as one of Spring’s unified unchecked exception.
For this, we’re provided with PersistenceExceptionTranslationPostProcessor, that we are required to add in our Spring’s application context like this:
< bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
This bean post processor adds an advisor to any bean that’s annotated with @Repository so that any platform-specific exceptions are caught and then re-thrown as one of Spring’s unchecked data access exceptions.
DataAccessException translation
The @Repository annotation can have a special role when it comes to converting database exceptions to Spring-based unchecked exceptions.
For example, when we work with Hibernate and we do not use a Spring template (e.g. JdbcTemplate) to interact with database. In this case, if hibernate threw an exception then spring will not convert it to Spring-based exception.
To automatically convert such non-spring exceptions to spring exceptions, we shall annotate Hibernate DAOs with @Repository. This way, PersistenceExceptionTranslationPostProcessor will applly persistence exception translation and converts native resource exceptions to Spring’s DataAccessException hierarchy.
Bean Exceptions
NoSuchBeanDefinitionException Exception thrown when a BeanFactory is asked for a bean instance for which it cannot find a definition. This may point to a non-existing bean, a non-unique bean, or a manually registered singleton instance without an associated bean definition.
Suppose there is one object reference in the class that we are not creating the object of that class( is not defined in the Spring Context) during application starts then we cannot use @Autowired (Required=true) it will throw above exception, Hence we need to put Required=false.
NoUniqueBeanDefinitionException.When we have a autowired reference of a interface or parent class without any qualifier and there are multiple child classes then above exception will be thrown.
Add Qualifier to resolve the type. @Qualifier("beanName")
Spring bean life cycle
Spring framework provides following 4 ways for controlling life cycle events of a bean:
InitializingBean (void afterPropertiesSet() throws Exception) and DisposableBean (void destroy() throws Exception) callback interfaces
InitializingBean interface allows a bean to perform initialization work after all necessary properties on the bean have been set by the container. The afterPropertiesSet() method is not a preferable way to initialize the bean because it tightly couples the bean class with the spring container.
A better approach is to use “init-method” attribute in bean definition in applicationContext.xml.
DisposableBean interface allows a bean to get a callback before the Spring container destroys the bean.
Aware interfaces for specific behavior Spring Aware interfaces allow you to look into the inner workings of the Spring Framework. Through Spring Aware interfaces, you can access the Spring context, or Spring bean lifecycle events.
ApplicationContextAware: void setApplicationContext (ApplicationContext applicationContext) throws BeansException; Spring provides an ApplicationContextAware interface that allows beans access to the ApplicationContext
For example, if your bean needs to look up some other beans. Similarly, if your bean needs access to some application file resource in your bean or even publish some application events, you need access to the ApplicationContext.
BeanNameAware: void setBeanName(String name); The BeanNameAware interface is implemented by beans that need access to its name defined in the Spring container.
BeanFactoryAware: void setBeanFactory (BeanFactory beanFactory) throws BeansException; Beans might need access to the bean factory that created it, to call any service from the bean factory.
Should you need to obtain a reference to the bean factory, implement the BeanFactoryAware interface.
Custom init() and destroy() methods in bean configuration file
These methods can be defined in two ways: Bean local definition to a single bean and Global definition applicable to all beans defined in bean context
@PostConstruct and @PreDestroy annotations
@PostConstruct annotated method will be invoked after the bean has been constructed using default constructor and just before its instance is returned to requesting object.
@PreDestroy annotated method is called just before the bean is about to destroyed inside the bean container.
What is the use of ContextLoaderListener in Spring MVC?
The ContextLoaderListner is one of the essential components of the Spring MVC framework, probably the most important after the DispatcherServlet itself.
It is used to create the root context and responsible for loading beans, which are shared by multiple DispatcherServlet like beans related to the service layer and data access
layer. In general, When you develop Spring MVC based web application and also using Spring in the services layer, you need to provide two application-contexts.
The first one is configured using ContextLoaderListener, and the other is set using DispatcherServlet. The DispatcherServlet is responsible for loading web component-specific
beans like controllers, view resolvers, and handler mappings while, as I said before, ContextLoaderListener is accountable for loading middle-tier and data-tier
beans which forms the back end of Spring applications.
The ContextLoaderListener is like any other Servlet listener, and it has to be declared in the deployment descriptor to listen to events.
It listens for startup and shutdown of the server by implementing ServletContextListener and accordingly creates and destroys Spring-managed beans.
Though, web.xml is just one way to configure ContextLoaderListener in Spring MVC application. From Spring 3.1 and Servlet 3.0,
you can also configure ContextLoaderListener without deployment descriptor and only using Java Configurations.


Candace Parker
On July 11, 2003, Parker tore her ACL in her left knee in a summer league game. On December 29, Parker returned to action for Naperville Central and a few months later, led her team to its second consecutive state title.
Want to know more?
Click here for more information about Parker's Early Life. Click here for more information on the hardest part of Parker's career.Alex Morgan
Ten years ago, American soccer player Alex Morgan suffered a torn anterior cruciate ligament (ACL). After surgery, she resumed a successful career. In the 2012 London Olympics, she scored the winning goal against Canada to send the U.S. to the gold-medal game. There, she faced off with Japan and the U.S. won.
Want to know more?
Click here for an interview with Morgan where she talks about recovering from a possible career ending injury. Click here for a story about Morgan working with young soccer players on stretches and how to prevent ACL injuries.Caroline Doty
Her contribution to Connecticut in 2011 was limited to suggesting plays from the sidelines. Doty first tore her ACL while playing soccer as a high school senior in the fall of 2007. On January 27, 2009, during her freshman season against Syracuse, she drove for a layup and landed awkwardly. In August of 2010, while practicing one-on-one moves, she drove for a left-handed layup and felt her left knee shift when she landed. The ACL was 80 percent torn and third operation was required.
Want to know more?
Click here for more information about her operations and recovery. Click here for more background on Caroline.


Step by step build notes. Click on the images to open up more detailed diagrams/models.
flange head m5 x 40mm screws, passing through the x rail, the x rail angle, and the slate bed.
note that the end four screws (2x2) are m5 x 50mm, because these also need to pass through the x ball screw mounting angle.
m5 x 40mm flange head screws (x9 for each side)... these are the screws which just pass through the gantry side and 6.35mm aluminium angle.
m6 x 60 flange head screws (x9 for each side)... these are the screws which must pass through the x drive arm, gantry side, and 6.35mm aluminium angle.
m6 x 25 flange head screw (x2).
combined with m6 tee-nut on the other side of the x drive arm.
m6 x 50mm flange head screws (x6 on each side). used with 10mm od dowel nut to affix the gantry back to the gantry sides.
(optional) m5 x 40 flange head screws (x12) fixed with nut/washer for the gantry back stiffener.
m6 x 70mm socket head (x8 for the bf bearings, and x8 for the bk bearings).
m6 x 70mm countersunk screws (x8 for the x ball screw bk bearings). note that these two bearings need countersunk screws so that their mounting angles can sit flush with the underside of the base.
m6 x 15mm countersunk screws (x4 per bearing x 8 bearings).
m5 x 15mm countersunk screws (x4 per bearing x 4 bearings).
m5 x 20mm socket or flange head screws (x6 per ball nut x 2 ball nuts).
m6 x 20mm socket or flange head screws (x6 per ball nut x 2 ball nuts).
z axis: m5 x 30mm flange head screw (x4).
y axis: m5 x 15mm countersunk screw (x4).
y axis: m6 x 15mm countersunk screw (x4 per mount x 2 mounts).
m5 x 12mm flange head screws (x10 x2) **attached into threaded holes on the z carriage angles.**
m5 x 40mm flange head screws (x4) fastened with washers/nuts.
m5 x 30mm flange head screws (x2), fastened with m5 tee-nuts.
m6 x 50mm (or 40mm) flange head screws (x2). attached in the opposite direction from the top spindle mount screws, with washer/nut.
use the pre-drilled sbr20 holes as a guide.
use some spare aluminium angle as a spacer.
use a diamond coated holesaw to make the holes in the slate base. slow and steady wins the day!
bearing block bf12/15 will be aligned to the corner of the angle aluminium.
the inner face of the aluminium angle will be aligned to the end of the table base.
the floating end bearing will be the anchor point to the base/x-rail. the fixed end and nema motor will be a function of the ballscrew length.
1) align aluminium angle face to nema motor mounting face
2) affix ballscrew into fixed bearing bk15 and mate with nema motor shaft using the appropriate coupler.
3) mark and drill holes to fix the fixed bearing and the nema motor to the aluminium angle
4) ensure ball nut is on the ballscrew shaft, with ball nut mount attached. affix ballscrew into floating bearing, and affix floating bearing onto the aluminium angle
5) mark and drill holes to fix the aluminium angle mount onto the base, using the x rail screws
6) attach entire x ballscrew assembly onto the underside of the base
machine the gantry sides out of stable 18mm playwood (or your preferred material) according to the specs in the image above.
repeat for both sides.
machine the x drive arms out of stable 18mm playwood (or your preferred material) according to the specs in the image above.
repeat for both sides.
machine the gantry back out of stable 18mm playwood (or your preferred material) according to the specs in the image above.
repeat for both sides.
align gantry back with one of the gantry sides such that the gantry back spans the full width.
drill 6mm holes into the gantry back at frequencies specified in the diagram, offset from the edge by half the gantry side thickness.
use a dowelling jig or similar to drill matching holes in the gantry side edges. drill holes in the gantry side faces for the dowel buts to fit into.
mark and drill holes for the gantry side angle to act as a bracket between the gantry back and gantry sides.
ensure adequate clearance from the various gantry side, y-rail, and y ball screw bearing holes.
Once the gantry sides/back are attached to the gantry side angle, seat the entire gantry assembly onto the x rail SBRUU bearings, such that it is symetric along the x axis. Ensure the SBRUU's are parallel to the outer back side of the gantry side angle, and mark the location of the bearing blocks. Measure and mark the centre points of the 4 holes (per SBRUU) and drill M6 holes. Countersink on the upper face (the inner, shorter face).
1) attach the top y rail flush with the top of the gantry back's inner face. tighten screws firmly.
2) align the bottom y rail with the lower insid edge of the gantry back's inner face. holes should be drilled1mm oversize into the gantry back, and at this stage screws should be finger tight.
3) attach and tighten gantry back stiffening angle.
1) align fixed side bearing (bk12) of the y ballscrew on the gantry back, flush with the inner gantry side face, and a spacer's width above the y rail.
2) mark and drill 4 mounting holes into the gantry back, and temporarily hold the bearing block in position.
3) align and mark holes in the y motor mounting bracket. to match the nema motor mounting holes, and the bk12 mounting holes.
1) assemble the bk12, the rm16 ballscrew, the ballnut and ballnut mount, and the bf12 floating side bearing.
2) hold in place, referenced to the freshly drilled bk12 mounting holes, and mark and drill mounting holes for the bf12 floating bearing.
3) mount the y ballscrew assembly and nema motor/mount and tighten screws.
Align the bearings into the inner corners of the y-carriage angles.

Start with the lower y-carriage angle. Drill M5 holes into the y-carriage angle first. Then mate up against the z-carriage angle, 31.5mm from the bottom of the z-carriage angle. Double check for square. Drill and tap matching M5 holes into the z-carriage angke. Use M5 x 10mm flange head screws.
Attach both y-carriage angles onto the y-bearings, and hang on the y-rails. Clamp the z-carriage angles onto the y-carriage angles and dril pilot/marking holes.
Dismount the z-carriage and top y-carriage angle and complete the hole drilling. *drill M5 holes into the y-carriage angles, and tap M5 holes into the z-carriage angles.
Seat the SBR rail along the inside corner of the z-carriage angles, using a spare 6.35mm angle as a spacer.
Drill exact holes only on one side - the wider aluminium angle.
Drill oversize holes in the other angle, to allow for alignment later.
setup notes for electronics - notably the rpi/arduino interfaces, and the bcnc software setup.
the brilliant raspberry pi (rpi) is really at the heart of controlling the cnc machine. it runs bcnc, the software which processes the gcode and talks directly to the arduino which runs grbl and drives the motors. furthermore, the setup is designed from the ground up to run "headless" - rpi talk for not having any connected monitor, keyboard or mouse. instead, the rpi is itself controlled "remotely" by another computer on the network, or even another computer anywhere in the world connected via the internet. what this means in practice is that a designer can edit their design and generate the gcode for the cam toolpaths from their home pc, and then "remote in" to the rpi in their garage (or anywhere in the world) to start the routing. internet of things, indeed! of course, with power comes responsibility, and there are legitimate security concerns that need resolving.
Raspbian is the Linux operating system that we will be installing onto our RPi. To do this, we need to download an "image" onto an SD card using our regular PC. The image is how we initally boot and load the starting software packages onto our RPi. The official documentation for installing images can be found here.
To help you out, we have already got a pre-made image with everything you need. DOWNLOAD THIS , and burn the image to a micro SD card, following the instructions for Windows, Mac OS, or Linux as appropriate.
The guys at protoneer.co.nz have kindly put together a pre-configured Raspberry Pi image with everything you need to get started. Download the image here.
The SD card needs formatting to ensure is is empty and clean. Download SD Formatter from here and follow these instructions.
To be honest, there really isn't much to it - just pop the SD card into your PC, make a note of what drive it appears in, open SD Formatter and check that the right drive is selected, and then hit "Format", clicking through the warnings.
Once the SD card is formatted and ready to be written, the Raspbian/CNC image is ready to be burned to it. For Windows PCs download Win32 Disk Imager here and follow these instructions.
Again, it's easy... open up Win32DiskImager, browse to the above image file you downloaded, and then hit "Write". It'll take a few minutes to write, but then you're done!
Now the exciting part - you are ready to breathe life into your Raspberry Pi! Pop the Micro SD card into the slot on the RPi (it's on the underside, at the end opposite the SD slots), then plug in a keyboard/mouse, and hook up the Pi to an HDMI monitor. Then, just plug her in.
You'll see a few lines of text whizz by in the command line shell, but within a few seconds it'll boot straight up into the graphical Operating System. You are up and running!
You are now up and running. However, before diving into anything, there are one or two important steps that need to be taken. Simple, but important.
Start by navigating through to Menu->Preferences->Raspberry Pi Configuration
The Pi comes shipped with the default password "raspberry", which obviously isn't the most secure password. Before you do anything else, on the System tab of the Configuration screen, press the button to change your password.
Press the "Expand Filesystem" button. This ensures that all of your SD card's storage is made available to the RPi.
On the "Interfaces" tab, make sure SSH has been enabled.
When you close the Configuration screen, you should be prompted to reboot the RPi - do this.
Towards the top right of your desktop you will see a network connection icon. Click it, and connect to your network.
Once connected, find your RPi's IP address by opening the Terminal (it is pinned to the bar at the top of the desktop), typing "ifconfig", and hitting enter. Your IP address will be labelled "inet addrs:" next to your relevant connection (wlan0 for wifi, or eth0 if you are connected to ethernet).
TeamViewer is one of the largest providers of Remote Software in the world. There are lots of choices out there when it comes to remoting in to you RPi, but we support TeamViewer for a number of reasons: 1) Security - TeamViewer features strong encryption, end-to-end encoding, optional two-factor-authentication. 2) Ease of use - No pesky port forwarding, no need to generate static IP addresses. Just install the TeamViewer Host on the RPi and it's good to go. 3) Multi-platform - you can access your RPi from Windows, Mac, Linux, Chrome OS, Android, iOS, Windows App and Blackberry!
TeamViewer's Host App beta is designed exclusively for running on Raspbian. Download here. This will save into the pi/Downloads folder of the RPi.
Open the downloaded file. You will probably be prompted for your system password.
Running the RPi "headless" means that you will have no monitor/keyboard/mouse plugged in. To enable this you must set up a TeamViewer password for unattended access. In the Rpi right click the TeamViewer icon in the top right of the desktop and select Options. Under "Security" enter a secure password under "Personal password (for unattended access)". Now, the RPi is accessible even in headless mode using this password.
If you prefer not to make unatteded access possible, then stick with the default, setting, whereby you let the RPi's TeamViewer host generate a random password, which you then communicate to the remote user. We'd recommend increasing the password strength in the Options->Security tab.
RDP is Microsoft's answer to remote working, and works by entering a computer address into a remote desktop connection screen, and then entering the user credentials of the target computer. In our case, the RPi image was already pre-loaded with XRDB, which makes this easy for us.
While the RPi is on, simply open up the Remote Desktop Connection Windows app, enter the RPi's IP address, and then the pi username/password when prompted. That's it! You'll have the RPi gui open up in a new window, as if you were working directly on the pi itself.
One note... by default, this will only work when connecting in from another PC on the same LAN.
ssh (secure shell) is a protocol for securely granting access to remote computers. it is encrypted, and is what we will use to "tunnel" through a "vnc" connection (see below) to ensure that everything is secure. ssh itself can be used to remote in to the rpi, but is only recommended for those who are comfortable controlling a computer via a terminal screen. for our purposes, it is a means to an end, and can be set up as per these instructions.
note that as of november 2016 the raspbian with pixel image available from reapberrypi.org downloads has changed a setting in order to disable ssh by default. now, for new users who wish to set up their new raspberry pi headlessly they first need to use any computer with and sd card to add a file called "ssh" into the /boot/ directory. now, when the image is loaded, ssh will be enabled, and allow headless operation. of course, enabling ssh also potentially opens the pi up to the internet, so it is important to change the password for the pi. see this update for more details.
to set up your rpi headlessly, follow the steps as laid out here.
vnc (virtual network computing) is the protocol that allows us to remotely control the graphical desktop of the raspberry pi. you can use any computer in the world to vnc into your raspberry pi, and it will be as though you are working directly on the raspberry pi itself. however, there are security concerns with directly vnc-ing in because once connected the data exchanged are not encrypted. therefore, we will set up the vnc to "tunnel" through the ssh connection we created above.
the first step is to setup the vnc "server" on the rpi itself. we might interchangeably use the terms server/host/remote to refer to the rpi in this context. follow the instructions here upto, but not including the section titled "connecting to your rraspberry pi with vnc viewer". that link refers to the vnc server provided by realvnc. a popular alternative is to use tightvncserver on the raspberry pi - click here for instructions.
once the vnc server is set up, we need to think about how you access it from your local computer (the one that you are physically working on). this might be a computer on the same home network as the rpi, or, since our machine has been designed to be fully web-connected, this computer can actually be any internet-connected computer (or tablet, or even smartphone!) in the world.
the way we set this up is by using remot3.it, by weaved inc.the remot3.it software is installed onto the rpi and can be used to manage just this pi or a large number of pis, from the internet. this can be used to access and tcp port on the pi over the web including ssh, vnc, http(s), rdp and custom tcp services. in our case, we will be using remot3.it to access the pi via vnc - although note that remot3.it just sets up the connection and generates ip addresses/ports to connect, using your own vnc client/viewer. for more details on installing remot3.it see the raspberrypi.org website, and for full instructions see the weaved.com instructions here and here.
it's worth mentioning one other service, teamviewer, that looks very promising for our application. teamviewer is fully secure, and appears to be much more user friendly and easy to deploy. see their website for more details, or see here for a good example of how teamviewer was used to control a raspberry pi home surveillance system.
GRBL is a totally free, open source CNC milling controller. It has been designed to run on a simple Arduino. It takes the G-code generated by the CAD/CAM software, and talks to the motors, spindles, coolant, and all the other real-world stuff that actually make the part.
Once again the guys at protoneer.co.nz have made our lives easier. This time, they have created a GRBL Arduinio Library, which allow you to use the Arduino IDE to flash GRBL to the Arduino, instead of making and loading HEX files onto the board. See their site for full instructions, which we'll repeat, below:
Step 1: Download the library from Github https://github.com/Protoneer/GRBL-Arduino-Library/archive/master.zip
Step 2: Unzip the library and copy the main folder into the Libraries folder in the folder you installed your Arduino software. Eg. C:\arduino-1.0.3\libraries\
Step 3: Rename the folder to GRBL. (This will stop the Arduino IDE from complaining about the long folder name)
Step 4: Open up the Arduino IDE.
Step 5: Click on the following menu : File -> Examples -> GRBL (or what ever you renamed the folder to) -> ArduinoUno
Step 6: Upload the sketch to your Arduino UNO board.
rm1605 and rm2005 have a 5mm lead. this means they produce linear travel of 5mm per turn of the ball screw. the gcode settings which relate directly to this are $100 (x steps/mm), $101 (y, steps/mm), $102 (z, steps/mm). the final setting will also depend on how much microsetting there is.
for example, a 5mm lead on a ball screw means that one complete revolution of the ball screw moves the ballnut 5mm. if the stepper motor has 200 steps per revolution (1.8 degrees per step), then for a 5mm lead ball screw, that implies a gcode setting of 200/5 = 40 steps/mm. that implies a resolution of 1/40 = 0.025 mm.
for further details on how to set up the cnc shield for microstepping, see the protoneer blog.


The timeout in seconds until the OpenStack instance must be active.
Keystone service base URL.
The availability zone in which to launch the server.
Whether OpenStack should mount a configuration drive for the machine.
Domain to use for authentication (Keystone v3 only).
Domain to use for authentication (Keystone v3 only).
Endpoint type can be internalURL, adminURL, or publicURL. It is a helper for the driver to choose the right URL in the OpenStack service catalog. If not provided the default is publicURL.
Identify the flavor used for the machine. flavorId
or flavorName
must
be provided.
Identify the flavor used for the machine.flavorId
or flavorName
must
be provided.
The IP pool used to get a public IP can assign it to the machine. If there is an IP address already allocated but not assigned to any machine, this IP is chosen and assigned to the machine. If there is no IP address already allocated, a new IP is allocated and assigned to the machine.
Identify the image used for the machine. imageId
or imageName
must
be provided.
Identify the image used for the machine. imageId
or imageName
must
be provided.
Explicitly allow openstack driver to perform “insecure” SSL (https) requests. The server’s certificate is not verified against any certificate authorities. This option should be used with caution.
If the instance has both IPv4 and IPv6 address, you can select IP version. If not provided, defaults to 4.
Specify the existing Nova keypair to use.
Identify the private network the machine is connected to. If your OpenStack project contains only one private network it is used automatically.
Identify the private network the machine is connected to. If your OpenStack project contains only one private network it is used automatically.
User password. It can be omitted if the standard environment variable OS_PASSWORD is set.
Used with --openstack-keypair-name, associates the private key to the keypair.
The region to work on. Can be omitted if there is only one region on the OpenStack.
If security groups are available on your OpenStack you can specify a comma separated list to use for the machine, such as secgrp001,secgrp002.
Customize the SSH port if the SSH server on the machine does not listen on the default port.
The username to use for SSH into the machine. If not provided defaults to root.
Identify the tenant in which the machine is created.
Identify the tenant in which the machine is created.
File containing an OpenStack userdata script.
User identifier to authenticate with.
Generated using TypeDoc
OpenStack docker-machine driver options
https://docs.docker.com/machine/drivers/openstack/


{% comment %}
Placeholder to allow defining custom head, in principle, you can add anything here, e.g. favicons:
1. Head over to https://realfavicongenerator.net/ to add your own favicons.
2. Customize default _includes/custom-head.html in your source directory and insert the given code snippet.
{% endcomment %}
{%- include favicons.html -%}
{% seo %}
{%- feed_meta -%}
{%- if jekyll.environment == 'production' and site.google_analytics -%}
{%- include google-analytics.html -%}
{%- endif -%}
{% if site.use_math %}
{% endif %}
{% if page.virus_spread %}
{% endif %}


NEWS FEED
Customize Searching
NEWS FEED
{% if show_pageitems %} {% show_pageitems %}{% else %}Total News {{newsfeed|length}}{% endif %}
| {{ news.date }} | {% if news.type == "add_activity" %} {% if news.activity %} {% if user == news.activity.created_by %} A new activity, {{news.object_name}} has been created by you. {% else %} {% if user in news.activity.assigned_to.all %} {% if news.activity.assigned_to.all|length == 1 %} You were assigned to a new activity, {{news.object_name}} by {{news.actor}}. {% else %} You and {{news.activity.assigned_to.all|length|add:-1}} others are assigned to a new activity, {{news.object_name}} by {{news.actor}}. {% endif %} {% else %} A new activity, {{news.object_name}} has been created by {{news.actor}}. {%endif%} {% endif %} {% else %} A new activity, "{{news.object_name}}," has been created by {{news.actor}}. This activity has since been deleted. {% endif %} {% elif news.type == "edit_activity" %} {% if news.activity %} {% if user == news.actor %} You modified an activity, {{news.object_name}}. {% else %} An activity, {{news.object_name}} was modified by {{news.actor}}. {% endif %} {% else %} An activity, "{{news.object_name}}," was modified by {{news.actor}}. This activity has since been deleted. {% endif %} {% elif news.type == "delete_activity" %} An activity, "{{news.object_name}}" was deleted by {{news.actor}}. {% elif news.type == "add_contact" %} {% if news.contact %} {% if user == news.actor %} A new contact, {{news.object_name}} has been created by you. {% else %} {% if user in news.contact.assigned_to.all %} {% if news.contact.assigned_to.all|length == 1 %} You were assigned to a new contact, {{news.object_name}} by {{news.actor}}. {% else %} You and {{news.contact.assigned_to.all|length|add:-1}} others are assigned to a new contact, {{news.object_name}} by {{news.actor}}. {% endif %} {% else %} A new contact, {{news.object_name}} has been created by {{news.actor}}. {%endif%} {% endif %} {% else %} A new contact, {{news.object_name}}, has been created by {{news.actor}}. This contact has since been deleted. {% endif %} {% elif news.type == "edit_contact" %} {% if news.contact %} {% if user == news.actor %} You modified a contact, {{news.object_name}}. {% else %} A contact, {{news.object_name}} was modified by {{news.actor}}. {% endif %} {% else %} A contact, {{news.object_name}}, was modified by {{news.actor}}. This contact has since been deleted. {% endif %} {% elif news.type == "delete_contact" %} A contact, {{news.object_name}} was deleted by {{news.actor}}. {% elif news.type == "add_organization" %} {% if news.organization %} {% if user == news.actor %} A new organization, {{news.object_name}} has been created by you. {% else %} {% if user in news.organization.assigned_to.all %} {% if news.contact.assigned_to.all|length == 1 %} You were assigned to a new organization, {{news.object_name}} by {{news.actor}}. {% else %} You and {{news.organization.assigned_to.all|length|add:-1}} others are assigned to a new organization, {{news.object_name}} by {{news.actor}}. {% endif %} {% else %} A new organization, {{news.object_name}} has been created by {{news.actor}}. {%endif%} {% endif %} {% else %} A new organization, {{news.object_name}}, has been created by {{news.actor}}. This organization has since been deleted. {% endif %} {% elif news.type == "edit_organization" %} {% if news.organization %} {% if user == news.actor %} You modified an organization, {{news.object_name}}. {% else %} An organization, {{news.object_name}} was modified by {{news.actor}}. {% endif %} {% else %} An organization, {{news.object_name}} was modified by {{news.actor}}. This organization has since been deleted. {% endif %} {% elif news.type == "delete_organization" %} An organization, {{news.object_name}} was deleted by {{news.actor}}. {% elif news.comment %} {% if news.comment.activity %} {% if user == news.actor %} You commented on the activity, {{news.object_name}}. {% else %} {{news.actor}} commented on the activity, {{news.object_name}}. {% endif %} {% elif news.comment.contact %} {% if user == news.actor %} You commented on the contact, {{news.object_name}}. {% else %} {{news.actor}} commented on thie contact, {{news.object_name}}. {% endif %} {% elif news.comment.organization %} {% if user == news.actor %} You commented on the organization, {{news.object_name}}. {% else %} {{news.actor}} commented on the organization, {{news.object_name}}. {% endif %} {%endif%} {%endif%} |
No News
{%endifequal%}
{% show_pages %}


| Visit - search for dates on when the show visited a venue |
| From: |
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To: |
|
| No. Shows per Visit: |
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No. Different Visits: |
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| This search will GROUP the results by venue (with the most recent visit shown for each venue)... |
| Venue |
| Capacity > |
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Capacity < |
|
| checkbox_checked($c{params}->{venues_at_risk})}>
At Risk |
checkbox_checked($c{params}->{projector})}>
Projector |
checkbox_checked($c{params}->{screen})}>
Screen |
checkbox_checked($c{params}->{projectionist})}>
Projectionist |
| Attendance |
| More than: |
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Less Than: |
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| Top Ticket Price: |
|
|
| Dates - search for the dates specified by clicking the tickboxes below - with no dates entered you are searching for fields NOT entered |
| Searching in NOT ENTERED mode |
| From: |
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To: |
|
| Brochure Deadline: |
checkbox_checked($c{params}->{brochure_deadline})}> |
Brochure Hit Date: |
checkbox_checked($c{params}->{brochure_hit_date})}> |
| Brochure Proof Date: |
checkbox_checked($c{params}->{brochure_proof_date})}> |
|
| Proof Requested: |
checkbox_checked($c{params}->{proof_requested})}> |
Proof Seen: |
checkbox_checked($c{params}->{proof_seen})}> |
| Tech Rider Sent: |
checkbox_checked($c{params}->{tech_rider_sent})}> |
Tech Rider Rcvd: |
checkbox_checked($c{params}->{tech_rider_rcvd})}> |
|
| Order By : |
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|


Review: Core i9 10980XE processor (Intel 18-core galore)
by Hilbert Hagedoorn
In this article, we'll review the all-new 18-core Core i9 10980XE from Intel that runs to 4.8 GHz. Despite many announcements, this is the most versatile (in cores) HEDT processor for the consumer market from Intel, the $979 Core i9 10980XE that sits as the flagship processor in the new Cascade lake line of processors.
Read the full review here.


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