There is no UPDATE or DELETE commands in ClickHouse at the moment. And that's not because we have some religious believes. ClickHouse is performance-oriented system; and data modifications are hard to store and process optimally in terms of performance.
But sometimes we have to modify data. And sometimes data should be updated in realtime. Don't worry, we have these cases covered.
Work with Partitions
Data in MergeTree engine family is partitioned by partition_key engine parameter. MergeTree split all the data by this partition key. Partition size is one month.
That's very useful in many terms. Especially when we're talking about data modification.
Yandex.Metrica "hits" Table
Let's look at an example on Yandex.Metrica server mtlog02-01-1 which store some Yandex.Metrica data for year 2013. Table we are looking at contains user events we call “hits”. This is the engine description for hits table:
ENGINE = ReplicatedMergeTree(
'/clickhouse/tables/{layer}-{shard}/hits', -- zookeeper path
'{replica}', -- settings in config describing replicas
EventDate, -- partition key column
intHash32(UserID), -- sampling key
(CounterID, EventDate, intHash32(UserID), WatchID), -- index
8192 -- index granularity
)
You can see that the partition key column is EventDate. That means that all the data will be splitted by months using this column.
With this SQL we can get partitions list and some stats about current partitions:
SELECT
partition,
count() as number_of_parts,
formatReadableSize(sum(bytes)) as sum_size
FROM system.parts
WHERE
active
AND database = 'merge'
AND table = 'hits'
GROUP BY partition
ORDER BY partition;
┌─partition─┬─number_of_parts─┬─sum_size───┐
│ 201306 │ 1 │ 191.34 GiB │
│ 201307 │ 4 │ 537.86 GiB │
│ 201308 │ 6 │ 608.77 GiB │
│ 201309 │ 5 │ 658.68 GiB │
│ 201310 │ 5 │ 768.74 GiB │
│ 201311 │ 5 │ 654.61 GiB │
└───────────┴─────────────────┴────────────┘
There are 6 partitions with a few parts in each of them. Each partition is around 600 Gb of data. Partition is strictly one piece of data for partition key, here we can see that it is months. Part is one piece of data inside partition. Basically it's one node of LSMT structure, so there are not so many of them, especially for old data. If there are too many of them, they merge and form bigger ones.
Partition Operations
There is a nice set of operations to work with partitions:
DETACH PARTITION
- Move a partition to the 'detached' directory and forget it.DROP PARTITION
- Delete a partition.ATTACH PART|PARTITION
-- Add a new part or partition from the 'detached' directory to the table.FREEZE PARTITION
- Create a backup of a partition.FETCH PARTITION
- Download a partition from another server.
We can do any data management operations on partitions level: move, copy and delete. Also, special DETACH and ATTACH operations are created to simplify data manipulation. DETACH detaches partition from table, moving all data to detached directory. Data is still there and you can copy it anywhere but detached data is not visible on request level. ATTACH is the opposite: attaches data from detached directory so it become visible.
This attach-detach commands works almost in no time so you can make your updates almost transparently to database clients.
Here is the plan how to update data using partitions:
- Create modified partition with updated data on another table
- Copy data for this partition to detached directory
DROP PARTITION
in main tableATTACH PARTITION
in main table
Partition swap especially useful for huge data updates with low frequency. But they're not so handy when you need to update a lot of data in real time.
Update Data on the Fly
In Yandex.Metrica we have user sessions table. Each row is one session on a website: some pages checked, some time spent, some banners clicked. This data is updated every second: user on a website view more pages, click more buttons, and do other things. Site owner can see that actions in Yandex.Metrica interface in real time.
So how do we do that?
We update data not by updating that data, but adding more data about what have changed. This is usually called CRDT approach, and there is an article on Wikipedia about that.
It was created to solve conflict problem in transactions but this concept also allows updating data. We use our own data model with this approach. We call it Incremental Log.
Incremental Log
Let's look at an example.
Here we have one session information with user identifier UserID, number of page viewed PageViews, time spent on site in seconds Duration. There is also Sign field, we describe it later.
┌──────────────UserID─┬─PageViews─┬─Duration─┬─Sign─┐
│<PHONE_NUMBER>466249494 │ 5 │ 146 │ 1 │
└─────────────────────┴───────────┴──────────┴──────┘
And let's say we calculate some metrics over this data.
count()
- number of sessionssum(PageViews)
- total number of pages all users checkedavg(Duration)
- average session duration, how long user usually spent on the website
Let's say now we have update on that: user checked one more page, so we should change PageViews from 5 to 6 and Duration from 146 to 185.
We insert two more rows:
┌──────────────UserID─┬─PageViews─┬─Duration─┬─Sign─┐
│<PHONE_NUMBER>466249494 │ 5 │ 146 │ -1 │
│<PHONE_NUMBER>466249494 │ 6 │ 185 │ 1 │
└─────────────────────┴───────────┴──────────┴──────┘
First one is delete row. It's exactly the same row what we already have there but with Sign set to -1. Second one is updated row with all data set to new values.
After that we have three rows of data:
┌──────────────UserID─┬─PageViews─┬─Duration─┬─Sign─┐
│<PHONE_NUMBER>466249494 │ 5 │ 146 │ 1 │
│<PHONE_NUMBER>466249494 │ 5 │ 146 │ -1 │
│<PHONE_NUMBER>466249494 │ 6 │ 185 │ 1 │
└─────────────────────┴───────────┴──────────┴──────┘
The most important part is modified metrics calculation. We should update our queries like this:
-- number of sessions
count() -> sum(Sign)
-- total number of pages all users checked
sum(PageViews) -> sum(Sign * PageViews)
-- average session duration, how long user usually spent on the website
avg(Duration) -> sum(Sign * Duration) / sum(Sign)
You can see that it works as expected over this data. Deleted row 'hide' old row, same values come with + and - signs inside aggregation and annihilate each other.
Moreover, it works totally fine with changing keys for grouping. If we want to group data by PageViews, all data for PageView = 5 will be 'hidden' for this rows.
There are some limitations with this approach:
- It works only for metrics which can be presented through this Sign operations. It covers most cases, but it's not possible to calculate min or max values. There is an impact to uniq calculations also. But it's fine at least for Yandex.Metrica cases, and there are a lot of different analytical calculations;
- You need to remember somehow old value in external system doing updates, so you can insert this 'delete' rows;
- Some other effects; there is a great answer on Google Groups.
CollapsingMergeTree
ClickHouse has support of Incremental Log model in Collapsing engines family.
If you use Collapsing family, 'delete' row and old 'deleted' rows will collapse during merge process. Merge is a background process of merging data into larger chunks. Here is a great article about merges and LSMT structures.
For most cases 'delete' and 'deleted' rows will be removed in terms of days. What's important here is that you will not have any significant overhead on data size. Using Sign field on selects still required.
Also there is FINAL modifier available over Collapsing family. Using FINAL guarantees that user will see already collapsing data, thus using Sign field isn't required. FINAL usually make tremendous performance degradation because ClickHouse have to group data by key and delete rows during SELECT execution. But it's useful when you want to check your queries or if you want to see raw, unaggregated data in their final form.
Future Plans
We know that current feature set is not enough. There are some cases which do not fit to limitations. But we have huge plans, and here are some insights what we've preparing:
- Partitions by custom key: current partitioning scheme is binded to months only. We will remove this limitation and it will be possible to create partitions by any key. All partition operations like FETCH PARTITION will be available.
- UPDATE and DELETE: there are a lot of issues with updates and deletes support. Performance degradation, consistency guarantees, distributed queries and more. But we believe that if you need to update few rows of data in your dataset, it should not be painful. It will be done.


Attribution of ideas
The maintainers and contributors to this repository feel it is important to credit the individuals and organizations who have taken their time to publish ideas and guides. This document provides a place to mention ALL of teh works that have influenced the design and implementation of the repository's content.
Documentation
Creation of a repository or project's ReadMe file
- https://github.com/noffle/art-of-readme
- https://github.com/jehna/readme-best-practices
- https://blog.algorithmia.com/github-readme-analyzer/
Creation of a repository's documentation site
- https://visualstudiomagazine.com/articles/2017/02/21/vs-dotnet-code-documentation-tools-roundup.aspx
- https://dotnet.github.io/docfx/
DocFx
These libraries use the following attributes for versioning https://natemcmaster.com/blog/2017/11/11/build-tools-in-nuget/ The following links are to projects or articles no longer included in the solution. However, they were considered relevant at one time, and certainly will contain information worth reviewing. MSBump: Used for automatic build number bumping and Nuget Package versioning https://github.com/BalassaMarton/MSBump
Adding triple-Slash (///) comments to code
Visual Studio
Doing Builds
Build Logging
New Project System for MSBuild
Builds in Docker
Packing into NuGet packages
Packing Libraries
Library Versioning
Library Dependencies
Development Versioning and LocalFeed
Packing the BuildTools Assemblies
BuildTool Versioning
BuildTool Dependencies
Installing Executables in the user's .nuget
Installing PowerShell Scripts in the user's .nuget
Installing Documentation for the BuildTools and configuring Visual Studio to recognize it
Development Versioning and LocalFeed
Packing the Blazor-SserviceStack Examples Assemblies
App Versioning
App Dependencies
Chocolatey Installation script
Chocolatey Installation configuration
Development Versioning and LocalFeed
Obsolete


The Framework
POWS is a framework that tries to cover the main ways people learn: visually, verbally, kinesthetically and holistically/contextual.
To make these terms more practical I have called them: Pictures, Objects, Words and Stories or POWS.
The aim of POWS is to provide a resource that teachers can use to plan lessons that cover different learning styles.
Pictures
Pictures are great for visual learners.
Pictures can include: photographs, illustrations, diagrams, video etc.
Objects
Objects are great for kinethetic learners.
Objects can include: Multi-link, Numicon, Weighing Scale, Algebra Tiles etc.
Words
Words are great for verbal learners.
Words can include: talking, writing and listening etc.
Stories
Stories are great for holistic learners.
Stories provide a context to the learning and can include: real world examples, imaginary scenarios, acting it out and games.


Founded in 2012 Acme Spices produces fresh, organic spices to be enjoyed as part of a healthy balanced diet. . The holostic health benefits are profound in our spices as they are produced with love and care
Our spices are homegrown. No harsh chemicals are used in the growing our spices. We rely on natural fertilizers and mother natures touch to produce the freshest spices.
All our spices are grounded by hand using a traditional pestle and mortar. This ensures no damage or denaturation occurs.
Most importantly we produce our spices with love and care. From carefully picking the spices, to grounding the spice to the beautiful packaging.


Analysis of a host file hijack
Sunbelt BLOG: Anatomy of a malicious host file hijack
A good analysis of a current host file hijacking trojan.. A couple of points I thought were really significant was the quality of the fake website and the range of hosts attacked.
It really shows significant efforts are being put into this if someone's producing that number of fake sites, and I'd imagine if the server they're currently on is taken down the setup of another will be relatively easy, making it easy to redploy this attack.
Realistically if a usual end-user got this, there's almost no way they could detect the forgery (although it doesn't mention whether the SSL cert. is faked well)
Also worringly there's a list of A-V programs, at the bottom of the post, several of which don't currently detect this trojan...


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Cultural Blog: My Thinking Style
March 15, 2015
My thinking style is Concrete Random. I deal with the obvious and don't look for hidden meanings. For me, what is around me is what I use. I don't like to think about what happened in the past or what is going to happen in the future. For me, It's best to focus on the task at hand and think about how to make it through. If I start dwelling on other factors beyond my control, I get distracted.
My information processing style is random. I don't have to go in order to understand things. As a matter of fact, I just need a chunk of information and I can build off of that. Even when following instructions on how to build something, once I see a general sense of how it goes, I usually complete it on my own. In life, I don't like to plan things out and too much planning takes away the enjoyment of the moment. I prefer to figure it out as I go along.
I like to experiment when finding out the right way to do something. I never ask for directions and have a hard time asking for help. But, I think it's because I enjoy the challenge of figuring it out on my own. I like to feel my way through situations with my intuition and don't like to follow rules or signs. Though I enjoy listening to others and hearing the way they work, I prefer to solve my problems independently.
My learning style is that I like to experiment, and see things not working as a part of the process of figuring out a problem. I don't really get frustrated when something doesn't work out because I know eventually I'll get it. I don't mind a little competition because winning, for me, doesn't have anything to do with anyone else. I am only competing with myself. If given a choice to solve a problem with a group or by myself, I would choose to do it on my own.
I don't like to have restrictions or boundaries of what I can and can't do. I guess that means I like to make my own rules, though I don't have a problem following formulas. Normal routines bore me, so I constantly push myself to keep myself entertained. Once something is done, I have no interest in doing it again. That's like looking back, and I'm not that big on living in the past. Though I am organized, I don't keep detailed records unless I have to (taxes, etc.). I tend to keep things like passwords in my head, which comes back to bite me more often than not.
I think one of the things I should learn to do is to learn how to ask for help from others. I'm also thinking to plan things more in the near future.


Harambe wins by a neck in Cheltenham thriller
Fergal O’Brien’s 9-to-2 favourite Benny’s Bridge was 12th, 52 lengths back.
by The42 TeamALAN KING’S 16-to-1 shot Harambe finished strongly to capture the Greatwood Handicap at Cheltenham by a neck.
The six-year-old was expertly steered by jockey Tom Bellamy, who squeezed Harambe between 9-to-1 shots Gumball and Monsieur Lecoq, who finished second and third respectively.
Fergal O’Brien’s 9-to-2 favourite Benny’s Bridge was 12th, 52 lengths back.
On soft ground, heavy in places, over the two-mile-and-half-a-furlong run, there was one fewer fence than usual — seven — because of the heavy rain that caused the abandonment of Friday’s racing.
Harambe had flattered to deceive on his seasonal debut five weeks ago, finishing seventh of nine under Wayne Hutchinson on good to soft ground at Chepstow, but rediscovered some of his form from earlier in 2019 to register his third win of the calendar year.


---
layout: post
title: An odd blog
tags:
- Application Lifecycle Management
status: publish
type: post
published: true
meta: {}
---
Computer Math
Computer MathI found this site, which has AlecTheGeek linked in their blogroll -- many thanks for that. The site is a set of personnel technical notes and seems to be focused on software building and deployment. There is a lot of basic information, but it needs expanding with more personnel experience I think -- could have lots of potential.
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RUMOR: Philip Rivers Would “Love” To Play For The Titans
by Darrelle LincolnPhilip Rivers is having a really bad 2019 campaign that might turn out to be his final season for the only franchise that he has ever known.
The Chargers legend has thrown 14 interceptions so far this season, and that includes 7 within the last two games. After losing to the Kansas City Chiefs in Mexico City, the team has now dropped to 4-7 and their playoff hopes are dying by the week.
Rivers is set to become a free agent after this season, and all signs are pointing to the team not bringing him back, which has now started the rumor mill of where he might end up.
According to a report by Matt Miller of Bleacher Report — Rivers would “love” to join the Titans.
Rivers, who will turn 38 in December, is amidst his 16th NFL season and has spent every moment of his career with the Chargers after he was traded from the Giants for Eli Manning on the day of the 2004 NFL Draft.
With Marcus Mariota falling out of favor in Tennessee, there just might be a spot for Rivers if the franchise looks at him the way he reportedly looks at them.


| 005:060 Khan | : |
Say (O Muhammad SAW to the people of the Scripture): "Shall I inform you of something worse than that, regarding the recompense from Allah: those (Jews) who incurred the Curse of Allah and His Wrath, those of whom (some) He transformed into monkeys and swines, those who worshipped Taghut (false deities); such are worse in rank (on the Day of Resurrection in the Hell-fire), and far more astray from the Right Path (in the life of this world)." |
| 005:060 Maulana | : |
Say: Shall I inform you of those worse than this in retribution from Allah? They are those whom Allah has cursed and upon whom He brought His wrath and of whom He made apes and swine, and who serve the devil. These are in a worse plight and further astray fromt he straight path. |
| 005:060 Pickthal | : |
Shall I tell thee of a worse (case) than theirs for retribution with Allah?  Such are in worse plight and further astray from the plain road. |
| 005:060 Rashad | : |
Say, "Let me tell you who are worse in the sight of GOD: those who are condemned by GOD after incurring His wrath until He made them (as despicable as) monkeys and pigs, and the idol worshipers. These are far worse, and farther from the right path." |
| 005:060 Sarwar | : |
Say, "Should I tell you who will receive the worst punishment from God?  |
| 005:060 Shakir | : |
Say: Shall I inform you of (him who is) worse than this in retribution from Allah? (Worse is he) whom Allah has cursed and brought His wrath upon, and of whom He made apes and swine, and he who served the Shaitan; these are worse in place and more erring from the straight path. |
| 005:060 Sherali | : |
Say, 'Shall I inform you of those whose reward with ALLAH is worst than that? They are those whom ALLAH has cursed and on whom HIS wrath has fallen and of whom HE has made apes and swine and who worship the Evil One. These indeed are in a worse plight, and father astray from the right path. |
| 005:060 Yusufali | : |
Say: "Shall I point out to you something much worse than this, (as judged) by the treatment it received from Allah? those who incurred the curse of Allah and His wrath, those of whom some He transformed into apes and swine, those who worshipped evil;- these are (many times) worse in rank, and far more astray from the even path!" |
Concepts/Themes Covered: أركان الإسلام > التوحيد > توحيد الله تعالي > غضبه Pillars of Islam> Islamic> Oneness of Allah> His Anger أركان الإسلام > التوحيد > الكافرون > صفات الكفار Pillars of Islam> Islamic> The Disbelievers> The Characteristics of the Disbelievers أركان الإسلام > التوحيد > الكافرون > النهي عن موالاة الكفار Pillars of Islam> Islamic> The Disbelievers> The Prohibition to Follow the Atheists الديانات > بنو إسرائيل > معاندتهم و تكذيبهم و قتلهم الأنبياء Religions>Children of Israel> Their Opposition, their Denial and their Killing the Prophets
This tool uses eight English parallel translations for the Holy Quran imported from Mr. Clay Smith. You can also visit Qurany Concepts for browsing the Quran themes or topics. If you want to search the Holy Quran for keywords, please visit Qurany Keywords.


Hello! My name is Arianna, and this is my first online portfolio. I hope you can get a little bit of an idea of what I'm about from my site. I have a broad specretum of interests, I particularly love:
I don't have as much schooling as I'd like, I graduated from David Douglas high school in 2013 and I've dabbled in some college courses a few times just trying to find my calling. I would pursue a lot of different options and nothing ever really stuck with me, then, one night I was cruising around the internet and I came across coding school and it instantly peaked my interest, as a huge career path I would love to take is game design. I did a lot of research and I came to the conclusion that this was something I had to try. So far, I'm so glad I did. It's a very rewarding field and I feel like I've learned so much in my few short weeks of school and I can't wait to see what the future holds for me.


Before Change
def test_combine_dfs():
Assert that the TPOT CombineDFs operator creates a combined feature set from two input sets
combined_dfs = data.\
join(data[[column for column in data.columns.values if column not in data.columns.values]])
assert np.array_equal(CombineDFs()(data, data), combined_dfs)
def test_export():
After Change
features1 = np.delete(data, non_feature_columns, axis=1)
features2 = np.delete(data, non_feature_columns, axis=1)
combined_features = np.concatenate([features1, features2], axis=1)
for col in non_feature_columns:
combined_features = np.insert(combined_features, 0, data[:, col], axis=1)
assert np.array_equal(CombineDFs()(data, data), combined_features)


The Merchant of Venice
by William Shakespeare
Merchant of Venice: Act 2, Scene 7
Additional Information
- Year Published: 1597
- Language: English
- Country of Origin: England
- Source: Shakespeare, W. (1597). The Merchant of Venice.New York: Sully and Kleinteich.
-
Readability:
- Flesch–Kincaid Level: 11.0
- Word Count: 684
- Genre: Tragedy
- Keywords: 16th century literature, british literature, comedy, drama, merchant of venice, william shakespeare
- ✎ Cite This
Downloads
SCENE. Belmont. A room in PORTIA's house.
(Flourish of cornets. Enter PORTIA, with the PRINCE OF MOROCCO,
and their trains.)
PORTIA.
Go draw aside the curtains and discover
The several caskets to this noble prince.
Now make your choice.
PRINCE OF MOROCCO.
The first, of gold, who this inscription bears:
'Who chooseth me shall gain what many men desire.'
The second, silver, which this promise carries:
'Who chooseth me shall get as much as he deserves.'
This third, dull lead, with warning all as blunt:
'Who chooseth me must give and hazard all he hath.'
How shall I know if I do choose the right?
PORTIA.
The one of them contains my picture, prince;
If you choose that, then I am yours withal.
PRINCE OF MOROCCO.
Some god direct my judgment! Let me see;
I will survey the inscriptions back again.
What says this leaden casket?
'Who chooseth me must give and hazard all he hath.'
Must give: for what? For lead? Hazard for lead!
This casket threatens; men that hazard all
Do it in hope of fair advantages:
A golden mind stoops not to shows of dross;
I'll then nor give nor hazard aught for lead.
What says the silver with her virgin hue?
'Who chooseth me shall get as much as he deserves.'
As much as he deserves! Pause there, Morocco,
And weigh thy value with an even hand.
If thou be'st rated by thy estimation,
Thou dost deserve enough, and yet enough
May not extend so far as to the lady;
And yet to be afeard of my deserving
Were but a weak disabling of myself.
As much as I deserve! Why, that's the lady:
I do in birth deserve her, and in fortunes,
In graces, and in qualities of breeding;
But more than these, in love I do deserve.
What if I stray'd no farther, but chose here?
Let's see once more this saying grav'd in gold:
'Who chooseth me shall gain what many men desire.'
Why, that's the lady: all the world desires her;
From the four corners of the earth they come,
To kiss this shrine, this mortal-breathing saint:
The Hyrcanian deserts and the vasty wilds
Of wide Arabia are as throughfares now
For princes to come view fair Portia:
The watery kingdom, whose ambitious head
Spits in the face of heaven, is no bar
To stop the foreign spirits, but they come
As o'er a brook to see fair Portia.
One of these three contains her heavenly picture.
Is't like that lead contains her? 'Twere damnation
To think so base a thought; it were too gross
To rib her cerecloth in the obscure grave.
Or shall I think in silver she's immur'd,
Being ten times undervalu'd to tried gold?
O sinful thought! Never so rich a gem
Was set in worse than gold. They have in England
A coin that bears the figure of an angel
Stamped in gold; but that's insculp'd upon;
But here an angel in a golden bed
Lies all within. Deliver me the key;
Here do I choose, and thrive I as I may!
PORTIA.
There, take it, prince, and if my form lie there,
Then I am yours.
(He unlocks the golden casket.)
PRINCE OF MOROCCO.
O hell! what have we here?
A carrion Death, within whose empty eye
There is a written scroll! I'll read the writing.
'All that glisters is not gold,
Often have you heard that told;
Many a man his life hath sold
But my outside to behold:
Gilded tombs do worms infold.
Had you been as wise as bold,
Young in limbs, in judgment old,
Your answer had not been inscroll'd:
Fare you well, your suit is cold.'
Cold indeed; and labour lost:
Then, farewell, heat, and welcome, frost!
Portia, adieu! I have too griev'd a heart
To take a tedious leave; thus losers part.
(Exit with his train. Flourish of cornets.)
PORTIA.
A gentle riddance. Draw the curtains: go.
Let all of his complexion choose me so.
(Exeunt.)


Dream Wedding
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Selected Day: {{appC.selectedDay1 | date: 'yyyy-MM-dd'}}
Two Week View
Selected Day: {{appC.selectedDay2 | date: 'yyyy-MM-dd'}}
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Selected Day: {{appC.selectedDay3 | date: 'yyyy-MM-dd'}}
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Computer graphics in Game development
Ivan Belyavtsev
6.11.2020
github.com/djbelyak/basic-of-ray-tracing
\[Ray=origin+t*\vec{direction}\]
\[t>0, |\vec{direction}| = 1\]
[2]


The Evothings Example Apps are designed to get you started quickly with development of mobile apps for Internet of Things.
Included are both very basic apps, such as Hello World, and IoT-specific apps such as the Arduino examples and the Philips Hue Demo. Run the examples using Evothings Client.
Use these apps as a starting point for you own projects. Use them in your projects at work, play with them at home, try them with your college or university class, or use them with your kids at home! Edit and modify them to suit your own goals! Spread the magic of IoT enabled apps!


Welcome to my website!
Given below are the links for the page.
Admission in Graduate School
Playlist of CIS
My Blog on notion page


The best bootstrap datepicker!
Original code from Stefan Petre. I also took things from Andrew Rowls and Aymeric Kodono.
Moment Datepicker is ready to work with Knockout, TypeScript and NuGet. It uses Moment.js to parse dates and to localize the literals, and Twitter-Bootstrap (2 or 3) to ensure a nice appearance.
Attached to a field with the format specified via options.
Using KnockOut.js ISO-8601 binding.
Using KnockOut.js Format binding.
Using KnockOut.js Start and End date binding.
Using KnockOut.js Date binding.
Using KnockOut.js Moment binding.
Attached to a field with the format specified via data tag.
As component.
As component expanding to the left.
Start with years viewMode.
Limit the view mode to months
Attached to other elment then field and using events to work with the date values.
Call the datepicker via javascript:
$('.datepicker').datepicker()
Don't forget to include the datepicker.css stylesheet.
| Name | type | default | description |
|---|---|---|---|
| format | string | 'MM/DD/YYYY' | the date format, see details... |
| weekStart | integer | 0 | day of the week start. 0 for Sunday - 6 for Saturday |
| viewMode | string|integer | 0 = 'days' | set the start view mode. Accepts: 'days', 'months', 'years', 0 for days, 1 for months and 2 for years |
| minViewMode | string|integer | 0 = 'days' | set a limit for view mode. Accepts: 'days', 'months', 'years', 0 for days, 1 for months and 2 for years |
| autoHide | boolean | true | Close the datepicker when an element is selected |
| calendarPlacement | string | 'right'|'left' | Decide the dropdown direction for the calendar |
Format a component.

 <input class="form-control" size="16" type="text" value="12-02-2015">

Initializes an datepicker.
Show the datepicker.
Hide the datepicker.
Updates the date picker's position relative to the element
Set a new value for the datepicker. It cand be a string, moment, date, etc.
Returns a clone of current internal moment object
Returns selected date as a formated string
Datepicker class exposes a few events for manipulating the dates.
| Event | Description |
|---|---|
| show | This event fires immediately when the date picker is displayed. |
| hide | This event is fired immediately when the date picker is hidden. |
| changeDate | This event is fired when the date is changed. |
$('#dp5').datepicker() .on('changeDate', function(ev){ if (ev.date.valueOf() < startDate.valueOf()){ .... } });
You can use Moment Datepicker with Bootstrap 2 by including only the datepicker2.css stylesheet.
Also, the markup for the component will vary a little:

 <input class="col-md-2" size="16" type="text" value="12-02-2015">


| MATLAB 文件帮助: cv.cornerEigenValsAndVecs | 查看 cv.cornerEigenValsAndVecs 的代码 | Index |
cornerEigenValsAndVecs Calculates eigenvalues and eigenvectors of image blocks for corner detection
dst = cv.cornerEigenValsAndVecs(src)
dst = cv.cornerEigenValsAndVecs(src, 'OptionName', optionValue, ...)
src
and the single
type (where size(dst,3)==6
).
Eigenvalues and eigenvectors are stored along the channels, see below.For every pixel p
, the function cv.cornerEigenValsAndVecs considers a
blockSize x blockSize
neigborhood S(p)
. It calculates the covariation
matrix of derivatives over the neighborhood as:
M = [
\sum_{S(p)}(dI/dx)^2 \sum_{S(p)}(dI/dx * dI/dy)
\sum_{S(p)}(dI/dx * dI/dy) \sum_{S(p)}(dI/dy)^2
]
where the derivatives are computed using the Sobel operator.
After that, it finds eigenvectors and eigenvalues of M
and stores them in
the destination image as (lambda_1, lambda_2, x_1, y_1, x_2, y_2)
where:
lambda_1
, lambda_2
are the non-sorted eigenvalues of M
x_1
, y_1
are the eigenvectors corresponding to lambda_1
x_2
, y_2
are the eigenvectors corresponding to lambda_2
The output of the function can be used for robust edge or corner detection.


--- title: "Hey, I'm Federico Martini" layout: splash date: 2016-03-23T11:48:41-04:00 header: overlay_color: "#000" overlay_filter: "0.3" overlay_image: /assets/images/nordwood-themes-483520-unsplash.jpg actions: - label: "Contact Me" url: "https://www.linkedin.com/in/federicomartini" excerpt: "... and I'm a Software Engineer." --- {{ content }}


The purpose of a SOM is to convert high-dimensional data to low-dimensional data.
SOMs consist of a lattice of neurons. The lattice is usually a square or hexagonal grid.
Every neuron has a weight vector with the same dimensions as the input data
$$ \begin{pmatrix} 6.9 \\ 3.2 \\ 5.7 \\ 2.3 \\ \end{pmatrix} $$


Former Liverpool boss reveals why Jose Mourinho joined Tottenham
by Sarthak SharmaJose Mourinho is now officially Tottenham Hotspur boss, and it appears that everyone has something to say about it. Former Liverpool player and manager Graeme Souness has given his own account.
The duo worked together at Sky Sports briefly, doing a bit of punditry that was both exciting and engaging, and Souness believes that it was clear Mourinho had a bit of anger after being sacked by his former employers Manchester United.
“Deep inside he is an angry and frustrated man with the way it turned out for him at United, Spurs will reap the benefit of that,” Souness said, per The Mirror.
“Will they win the league this year? No. But they will be far more difficult to play against.
“He talks common sense at that is basically what football is about. Off-camera he is jovially funny, he is engaging, extremely knowledgeable and desperate to get back into football.
“He will know where he could have done better and decisions he made he wishes he hadn’t made. Spurs will reap the benefit of that big time.”
Only time will tell whether or not Tottenham do reap the benefits of a Jose Mourinho hungry for more success, but as of now, it is clear that the Portuguese’s appointment has divided opinion.


17-313: Foundations of Software Engineering
Recitation 3: Software Archaeology
Overview
In today’s recitation, we will practice getting to know an unknown codebase specifically in the context of fixing bugs in an open-source software system. We will do this by exploring bugs in OpenRefine, a Java tool for loading, cleaning, and augmenting data.
Pre-requisites
You may optionally wish to peruse these docs to introduce yourself to how to use OpenRefine.
Let’s fix some bugs!
Consider the following open bug: https://github.com/OpenRefine/OpenRefine/issues/5034
Task 0: Clone the repo
- Clone the repository at https://github.com/OpenRefine/OpenRefine
- Run with
./refine
in the project directory
Task 1: Reproduce the bug
- Look at the issue above and reproduce it manually as in the description
Task 2: Diving into the code
Let’s learn more about this bug! Your high level goal is to identify the code that is implicated in the bug and learn more about the bug en route to fixing it. Note that we don’t expect you to actually fix it, it’s open for a reason, but we’d like you to learn about the code being executed and learn a little bit about what’s going on.
(It’s okay if you don’t get to all of these tasks.)
Try some or all of the following tasks:
- Explore the tests directory
- Can you find a test that looks like it might test the same code you’ve been exploring in these bugs? (hint: the bug involves importing an Excel file)
- Use your IDE to jump to a definition implicated in the code you’re debugging
- Find similar code to the code that’s involved in the error (hint: the code adds a column called File, and one of the cells involves the file source)
- Try making a change! It will reflect in the UI. Can you fix the bug?
If you’ve finished all that, practice playing around with testing with Maven:
- Write a test that fails due to the bug
- Change the code so that that your new test pass
- Change the code so that a different error is thrown
- Change your tests such that an error isn’t thrown


Notes on Logistic Regression
Course 1 of Andrew Ng's Deep Learning Series
Course 2
Course 3
Welcome
AI is new electricity, transforming numerous industries.
Neural Network
Looks like this
Multidimensional input goes to the neurons in first layer. Output of first layer neurons goes to second layer, and so on.
Housing problem is structured, ads clicked or not is structured. Audio, image, and are unstructured.
Deep learning is taking off now because there is lot of data to train on, and computing power to perform this training.
Logistic Regression
We are given $(x, y)$ pairs where $x \in R^{n_x}$ and $y \in \{0, 1\}$.
$x$ is written as a column vector.
We want $\hat{y} = P(y = 1 \mid x)$.
We denote those pairs as $(x^{(1)}, y^{(1)}), (x^{(2)}, y^{(2)}) \dots (x^{(m)}, y^{(m)}) $
We say $\hat{y} = \sigma(w^{T}x + b)$, or $\hat{y} = \sigma(z)$ where $z = w^{T}x + b$
by which we mean
$\hat{y^{(i)}} = \sigma(w^{T}x^{(i)} + b)$ for $i = 1\dots m$
where $w \in R^{n_x}$ is again a column vector, and $b \in R$ and
$\sigma(z) = \frac{1}{1 + e^{-z}}$
$w^T = [w_1, w_2, \dots w_{n_x}]$
$\sigma(z)$ called "activation function". There can be many activation functions. They are the
ones which give rise to non linearity in logistic regression and neural networks.
Now we need to find $w$ and $b$ such that cost function
$J(w,b) = \frac{1}{m} \sum_{i=1}^{m}L(\hat{y^{(i)}}, y^{i})$
is minimized, where
$L(\hat{y}, y) = -(ylog\hat{y} + (1 - y)log(1 - \hat{y}))$
$J$ is called cost function, $L$ is called loss function.
Gradient Descent to Solve the Problem
Main idea is, start with some value of $w$ and $b$, and then repeatedly:
$w_i = w_i - \alpha\frac{dJ(w,b)}{dw_i}$ for $i = 1\dots n_x$
$b = b - \alpha\frac{dJ(w,b)}{db}$
till $w$ and $b$ converge.
Now, for one training example, let us use $\hat{y} = a$.
$\frac{dL(a,y)}{dw_1} = \frac{dL(a,y)}{da}\frac{da}{dz}\frac{dz}{dw_1}$
where $z = \sigma({w^{T}x + b})$
It simplifies to
$\frac{dL(a,y)}{dw_1} = (-\frac{y}{a} + \frac{1-y}{1-a}) * a(1-a) * x_1$
$= (a - y)x_1$
Similarly, we can find that
$\frac{dL}{db} = \frac{dL}{dz}$
Some notation
We denote $da = \frac{dL(a,y)}{da}$, $dz = \frac{dL(a,y)}{dz}$ and $dw = \frac{dL(a,y)}{dw}$
Thus we write:
$dz = (a - y)$, $dw_i = x_idz$
Now, since you know $dw_i$, if there were just one training example, you could do
$w_i = w_i - \alpha dw_i$
repeatedly till $w_i$ converged.
But we have $m$ training examples.
Gradient descent on $m$ training examples
Thus, summing over $m$ training examples,
$\frac{dJ}{dw_1} = \frac{1}{m}\Sigma_{i=1}^{m}\frac{d}{dw_1}L(a^i, y^i)$
$= \frac{1}{m}\Sigma_{i=1}^{m}dw_1^{(i)}$
We call $dw_1 = \frac{dJ}{dw_1}$
and set $w_1 = w_1 - \alpha dw_1$
Similarly for $dw_2\dots dw_{n_x}$
And $b = b - \alpha db$
Vectorizing Logistic Regression
Since $x$'s are written as column vector, we can introduce
$X =
\begin{bmatrix}
\mid & \mid & & \mid\\
x^{(1)}& x^{(2)} & \dots & x^{(m)}\\
\mid & \mid & & \mid
\end{bmatrix}$,
$X \in R^{n_x \times m}$
Also, $Z = [z_1,\dots z_m]$
And, $W^T = [w_1, \dots w_{n_x}]$. Note that we just declare $W = w$
So, $Z = W^TX + b$
$A = \sigma(Z)$
$dZ = A - Y$
where $A = [a^{(1)}, \dots, a^{(m)}]$, $Y = [y^{(1)}, \dots, y^{(m)}]$
$db = \frac{1}{m} sum(dZ)$
$dw = \frac{1}{m}Xdz^{T}$
$w = w - \alpha dw$
$b = b - \alpha db$
Multi layered neural networks
First layer, i.e. input layer: provides the input $x$, also called $a^{[0]}$
Second layer computes $z^{[1]} = \begin{bmatrix} z^{[1]}_1\\z^{[1]}_2\\\vdots\\z^{[1]}_k\end{bmatrix}$
$=\begin{bmatrix} w^{[1]T}_1 * a^{[0]} + b^{[1]}_1\\ w^{[1]T}_2 * a^{[0]} + b^{[1]}_2\\ \vdots\\w^{[1]T}_k * a^{[0]} + b^{[1]}_k \end{bmatrix}$
and then, $a^{[1]}_i = \sigma(z^{[1]}_i)$
Superscript $[1]$ denotes the first layer of neural network and subscript $i$ denotes the $i^{th}$ element
of the first layer.
Now that you have $a^{[1]}$ ready, can compute $a^{[2]}$ applying similar logic.
Vectorizing computation of $z^{[1]}$ etc.
We stack various $w^{[i]T}$'s below each other and call it $W^{[1]}$, and then call
$z^{[1]} = W^{[1]} * x + b^{[1]}$
or
$z^{[1]} = W^{[1]} * a^{[0]} + b^{[1]}$
and $a^{[1]} = \sigma(z^{[1]})$
Vectorizing across multiple training examples
Now vectorizing across multiple training examples is also not too hard:
As usual, various columns denote various training examples
$Z^{[1]} = W^{[1]} * A + b^{[1]}$
Various activation functions
Activation functions are the source of non linearity.
- sigmoid: $\frac{1}{1 + e^{-z}}$
- tanh: $\frac{1 - e^{-z}}{ 1 + e^z}$
- RelU
- LeakyRelu
Their derivatives:
sigmoid: $g(z) (1 - g(z)$
tanh: $1 - tan^2(z)$
Gradient descent implementation
Parameters are $w^{[1]}$, $b^{[1]}$, $w^{[2]}$, $b^{[2]}$
First layer has $n_x = n^{[0]}$ units, second layer has $n^{[1]}$
units and last layer (for two layer neural net) has $n^{[2]} = 1$
units.
$w^{[1]}$ is $n^{[1]}\times n^{[0]}$ matrix.
$w^{[2]}$ is $n^{[2]}\times n^{[1]}$ matrix.
$b^{[1]}$ is $n^{[1]}\times 1$ matrix.
$b^{[2]}$ is $n^{[2]}\times 1$ matrix.
$J(w^{[1]}, w^{[2]}, b^{[1]}, b^{[2]}) = \frac{1}{m}\sum_{i=1}^mL(\hat{y}, y)$
Repeat {
Compute $\hat{y^{(1)}}, \hat{y^{(2)}}, \hat{y^{(m)}}$
$dw^{[1]} = \frac{dJ}{dw^{[1]}}$, $dw^{[2]} = \frac{dJ}{dw^{[2]}}$
$db^{[1]} = \frac{dJ}{db^{[1]}}$, $db^{[2]} = \frac{dJ}{db^{[2]}}$
$w^{[1]} = w^{[1]} - \alpha dw^{[1]}$
and so on
}
where
(Image credit: deep learning course on coursera)
L-layered neural networks
Similar to 3-layered neural networks.
A note about dimensionality
Let input be $n^{[0]} = n_x$ layered, and $i^{th}$ layer have $n^{[i]}$ neurons.
$W^{[1]}$ has dimension $(n^{[1]}, n^{[0]})$
$W^{[i]}$ has dimension $(n^{[i]}, n^{[i-1]})$
$Z^{[i]}$ has dimension $(n^{[i]}, 1)$
$b^{[i]}$ has dimension $(n^{[i]}, 1)$
Forward/Backward propagation in L-layered neural networks


Apple Event Bingo
BINGO!
How to play
- As you're watching the Apple event, mark off the events listed in your card as they happen.
- If you're the first person to get 5 in a row horizontally, diagonally or vertically you win.
- The middle square is free.
- Reload to get a new card. There are currently possible values.
By Karl Monaghan | Inspired by by WWDC 2013 Bingo | Get in touch | Code


HER ALIBI A film review by Mark R. Leeper Copyright 1989 Mark R. Leeper
Capsule review: Bruce Beresford (BREAKER MORANT, TENDER MERCIES) turns his hand to a light comedy-mystery whose most severe false steps are when it strays into slapstick. The mystery is predictable. Rating: +1.
Australian director Bruce Beresford is not really someone known for light comedy. The major films he is known for are DON'S PARTY (1976), THE MONEY MOVERS (1978), BREAKER MORANT (1980), and TENDER MERCIES (1982). That is a pretty somber set of films with the possible exception of parts of DON'S PARTY. He certainly is not the first director you would expect to see doing a light, romantic comedy-mystery, but that is just what he is doing in HER ALIBI.
HER ALIBI does not actually start as a light comedy. The police find a murder victim stabbed to death with a pair of scissors and Frank Polito (played by James Farentino) is investigating. We are also introduced to Philip Blackwood (played by Tom Selleck), a mystery writer with a series of eight or so popular mysteries to his name. And eight was about the number of stories he had to tell. For four years he has been trying to squeeze out another without success. Then he sees Nina, a beautiful Romanian woman on trial for murder, and decides to get involved by telling the police that she was with him at the time of the murder. (Do *not* try this trick at home, boys and girls.) Polito knows he is lying and warns him that if she murders Blackwood, the alibi can never be questioned. Blackwood convinces Nina to stay at his house but he is torn between infatuation and suspicion.
Nina is played by the svelte Paulina Porizkova. HER ALIBI also features several familiar actors in roles that less familiar actors could have easily filled. But it is still enjoyable to see the likes of the durable William Daniels (THE GRADUATE. television's CAPTAIN NEMO), Tess Harper, Joan Copeland, and the ever-sinister Hurd Hatfield (THE PICTURE OF DORIAN GRAY).
Beresford has a deft hand with drama but his occasional lapses into slapstick undermine the mood of the film and are neither likable nor believable. Colin Higgins' transitions in the comparable FOUL PLAY were handled much more smoothly. Beresford does manage to turn an impromptu haircut into an extremely sensual sequence which is a little surprising-- considering haircuts, I mean. Another and unfortunately larger sequence involving a cat is merely a dramatization of an old joke.
HER ALIBI is a pleasant lightweight piece of entertainment. Rate it a +1 on the -4 to +4 scale.
(FYI: One of my best friends is Romanian. The Romanian spoken in this film has the right words but is still barely recognizable as Romanian.)
Mark R. Leeper att!mtgzz!leeper<EMAIL_ADDRESS>The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
belongs to the author.
Please direct comments/criticisms of the review to relevant newsgroups.
Broken URLs inthe reviews are the responsibility of the author.
The formatting of the review is likely to differ from the original due
to ASCII to HTML conversion.
Related links: index of all rec.arts.movies.reviews reviews


Gulf region hit by unstable weather conditions
TEHRAN: Iranians have defeated the “enemy’s conspiracy,” President Hassan Rouhani said Wednesday, after days of violent demonstrations across the country sparked by a petrol price hike.
“Our people have been victorious against ... the enemy’s conspiracy,” he said in remarks at a cabinet meeting aired on state TV, adding that the “armed anarchists” who took to the streets were few in number.


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Williston Clubs
The Williston Northampton School has many clubs. There is a club fair in the fall, but not many things exist to explain when each club meets, or even is present, so I decided to give Williston a gift that might be helpful to future students. :P


Beneficiaries
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In this week, we made a skaeboard and design it. Firstly, we start with woodwork. I worked with Brian to stick the wood piece together with woodglue, it was a really hard job. The woodglue dried in few minutes, so we had to work hard for glue 4 pieces of wood. After we finished the glue, we used the machines in WIC, to made skateboard as a best shape. The machines were really dangerous, I focused 100% to not get injured. Finally, we designed the skateboard. I chose the sticker printing, and printed the Santa Monica beach logo + bomb logo, to show thw pirate+beach concept. I think this project was the hardest project, because we need to combine designing and woodworking, put 100% effort to glue the wood and not get injured by the machines.
The Skatboard that I made and designed


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Reactivation of Kaposi 's sarcoma-associated herpesvirus infection from latency by expression of the ORF 50 transactivator, a homolog of the EBV R protein.
Abstract
Kaposi 's sarcoma (KS) -associated herpesvirus (KSHV), or human herpesvirus 8, is a lymphotropic virus strongly linked to several AIDS-related neoplasms. The primary reservoir of infection consists of latently infected B lymphocytes and possibly other mononuclear cells. Viral reactivation from latency and spread from this lymphoid reservoir is presumably required for development of nonlymphoid tumors like KS. Here we show that deregulated expression of a single viral gene, ORF 50, which encodes a transactivator able to selectively upregulate delayed-early viral genes, suffices to disrupt latency and induce the lytic gene cascade in latently infected B cells. The identification of this gene opens the way to studies of the physiologic mechanisms controlling reactvation of KSHV from latency. Copyright 1998 Academic Press.


Nonprofit notes for Nov. 21, 2019
Vintage Market Days helps empower women
Vintage Market Days, an upscale vintage-inspired market, is Dec. 6-8 in Oklahoma Expo Hall at Oklahoma State Fair Park.
Co-owners and event coordinators Brandi Nollin and Erica Parker are empowering women entrepreneurs while creating a charming family atmosphere for shoppers. With the theme “A Splendid Christmas,” the event will feature about 80 vendors and 200 booths along with live music, food trucks and photo booths.
Tickets on Dec. 6 are $11, and $6 Dec. 7-8. Admission is free for ages 12 and younger. For more information or tickets, go to vintagemarketdays.com/market/oklahoma-city.
Libraries can apply for funding opportunity
The Oklahoma Partnership for School Readiness is accepting applications for its Public Library Family Engagement Project.
The funding will allow libraries to implement several different programs encouraging infant and toddler development and promoting lifelong literacy. In total, 112 recipients will be funded with a maximum award of $2,000 per recipient.
To apply, go to okschoolreadiness.org/okfutures/maximizing-parent-choice#public_library_project by 5 p.m. Dec. 6.
For more information, call 429-4219 or email<EMAIL_ADDRESS>Santa Market to benefit Alzheimer’s research
The 10th Annual Santa Market is 9 a.m. to 5 p.m. Nov. 23 in the Pavilion Building at Oklahoma State Fair Park. Admission and parking are free.
Almost 200 vendors will be selling homemade creations, including clothing, children’s items, toys, jewelry, home decor, holiday items and more. Photos with Santa will be available. The first 1,000 shoppers will receive a free shopping bag filled with goodies. There will also be a silent auction.
Part of the proceeds goes to the Alzheimer’s Association of Oklahoma. For more information, go to facebook.com/thesantamarket.
Gift drive to benefit The Children’s Center
BETHANY — The Children’s Center Rehabilitation Hospital is preparing for its 13th annual Holiday Helper’s campaign. Individuals and groups looking for ways to donate this season can choose from a list of basic needs items and a special toy catalog to provide patients holiday cheer. The campaign kicks off Nov. 21 and will run through Jan. 1.
Items can be dropped off from 9 a.m. to 9 p.m. daily. For more information, including the basic needs list, go to miracleshappenhere.org or call 789-6711, option 4.
Scouts collect 52,000 pounds of food
To help alleviate hunger in the community, Scouting for Food collected more than 52,000 pounds of food on Nov. 9 and 16.
Scouting for Food is an annual collection of nonperishable food items, coordinated across the 24 counties served by the Last Frontier Council. Various food pantries across the community will receive the food collected, and in turn, give the food to hundreds of individuals or families in need.
For more information or to make a donation, contact Sarah Spinks at 840-1114.
— Erica Smith, for The Oklahoman


Student Detail View
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Locker Assignment
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For the sake of human innovation for all peoples, by all peoples.
On December 18, 2019. The Philippines dropped out of the top 10 most gender-equal countries for the very first time.
Based on the reports, it was said that the political empowerment gap in the country has widened over the past two years, which caused the Philippines' ranking to drop from 13th to 29th.March 9, 2020.
The UN Women says that millions of women still are face poverty, discrimination and violence. Almost 500,000 women and girls over the age of 15 were illiterate.About half the world’s men and women believed that men made better political leaders,
while over 40% thought men made better business executives and had greater rights to a job.
However, 28% of them felt it was justified for a husband to beat his wife.
March 26, 2019. Women in Canada earn less than men even for the same job. Women were making 96 cents while men earn a 1$.
The Glassdoor study went one step further. They found that there is a 4 cent pay differential between men and women.
They also have taken into account factors such as education, job experiences, and occupations. Canadian women are making just 96 cents for every $1 earned by men with the same qualifications and experience.
The 4 cent pay differential remains unexplained according to Glassdoor.On January 15, 2020, women in Canada earn less than men almost immediately after graduation and the gap gets worse.
On average, the report shows that women earn $5,700 less than men one year after graduation.
Steven Tobin, executive director of the Labour Market Information Council, said “Looking at five years after graduation, women earn less than men in every credential, in every field of study.”
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What is Rails?
Web Development frameworks
29 Mar 15
As phase 0 draws to a close an important question comes to mind. "I signed up for this class to learn how to do web programming in Ruby on Rails. Where is the Rails part?" We have seen quite a bit of Ruby but no Rails thus far. That begs the question, What is Rails?
According to rubyonrails.org (a site that would appear authoritative), "Rails is a web application development framework written in the Ruby language." Web application development frameworks are sets of libraries, templates, and databases designed to significantly reduce the time it takes to get a dynamic web application up and running from zero. Many of the tasks, such as setting up a Model Controller View (MCV) architecture, are automated in web dev frameworks.
Rails is not the only one of these, just one of the more successful. Large companies such as Twitter, Shopify, AirBnB, and Groupon built their sites using it. Rails emerged from work on a project called Basecamp in 2004 and has seen increasing adoption since then. The code base is actively updated and they continue to add new features and functionality. The most current version of Rails is 4.2. Rails inherits the guiding principle of Don't Repeat Yourself (DRY) programming from Ruby and also strongly favors convention in the naming and design of programs. Reading tutorials I have found the phrase "the Rails way" quite a bit. Theres even a book. Culturally this seems to be a carry over from Ruby where much of the same language is found.
Looking forward to phase 1, I am extremely excited to sink my teeth into rails in a more concrete way. Having only done the Hartl tutorial, which I highly recommend, digging deeper into this framework is something I am looking greatly forward to.


Turek Chief Burai:
...?
This is unbelievable!
 Those filthy traitors!
"You've been played!"


Primary Content Section
"London is the capital city of England.It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.Paris is the capital of France.The Paris area is one of the largest population centers in Europe, with more than 12 million inhabitants.
"Responsive Web Design makes your web page look good on all devices (desktops, tablets, and phones).Responsive Web Design is about using CSS and HTML to resize, hide, shrink, enlarge, or move the content to make it look good on any screen.Tokyo is the capital of Japan.It is the center of the Greater Tokyo Area, and the most populous metropolitan area in the world
"Bootstrap is a free front-end framework for faster and easier web development Bootstrap includes HTML and CSS based design templates for typography, forms, buttons, tables, navigation, modals, image carousels and many other, as well as optional JavaScript plugins.Bootstrap also gives you the ability to easily create responsive designs"


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{% load i18n admin_tags lib_tags %} {% for ident in identities %} {% check_identity_status ident as identity_is_enabled %}


Changelog¶ ↑
v1.6.0 (24/11/2017)¶ ↑
No changelog for this release.
v2.0.4 (24/11/2017)¶ ↑
-
[closed] Switch to mime-score module for resolving extension contention issues. #182
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[closed] Update mime-db to 1.31.0 in v1.x branch #181
v1.5.0 (22/11/2017)¶ ↑
-
[closed] need ES5 version ready in npm package #179
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[closed] mime-db no trace of iWork - pages / numbers / etc. #178
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[closed] How it works in brownser ? #176
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[closed] Missing
./Mime
#175 -
[closed] Vulnerable Regular Expression #167
v2.0.3 (25/09/2017)¶ ↑
No changelog for this release.
v1.4.1 (25/09/2017)¶ ↑
-
[closed] Issue when bundling with webpack #172
v2.0.2 (15/09/2017)¶ ↑
-
[V2] fs.readFileSync is not a function #165
-
[closed] The extension for video/quicktime should map to .mov, not .qt #164
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[V2] [v2 Feedback request] Mime class API #163
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[V2] [v2 Feedback request] Resolving conflicts over extensions #162
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[V2] Allow callers to load module with official, full, or no defined types. #161
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[V2] Use “facets” to resolve extension conflicts #160
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[V2] Remove fs and path dependencies #152
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[V2] Default content-type should not be application/octet-stream #139
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[V2] reset mime-types #124
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[V2] Extensionless paths should return null or false #113
v2.0.1 (14/09/2017)¶ ↑
-
[closed] Changelog for v2.0 does not mention breaking changes #171
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[closed] MIME breaking with 'class' declaration as it is without 'use strict mode' #170
v2.0.0 (12/09/2017)¶ ↑
-
[closed] woff and woff2 #168
v1.4.0 (28/08/2017)¶ ↑
-
[closed] support for ac3 voc files #159
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[closed] Help understanding change from application/xml to text/xml #158
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[closed] no longer able to override mimetype #157
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[closed] application/vnd.adobe.photoshop #147
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[closed] Directories should appear as something other than application/octet-stream #135
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[closed] requested features #131
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[closed] Make types.json loading optional? #129
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[closed] Cannot find module './types.json' #120
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[V2] .wav files show up as “audio/x-wav” instead of “audio/x-wave” #118
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[closed] Don't be a pain in the ass for node community #108
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[closed] don't make default_type global #78
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[closed] mime.extension() fails if the content-type is parameterized #74
v1.3.6 (11/05/2017)¶ ↑
-
[closed] .md should be text/markdown as of March 2016 #154
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[closed] Error while installing mime #153
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[closed] application/manifest+json #149
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[closed] Dynamic adaptive streaming over HTTP (DASH) file extension typo #141
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[closed] charsets image/png undefined #140
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[closed] Mime-db dependency out of date #130
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[closed] how to support plist？ #126
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[closed] how does .types file format look like? #123
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[closed] Feature: support for expanding MIME patterns #121
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[closed] DEBUG_MIME doesn't work #117
v1.3.4 (06/02/2015)¶ ↑
No changelog for this release.
v1.3.3 (06/02/2015)¶ ↑
No changelog for this release.
v1.3.1 (05/02/2015)¶ ↑
-
[closed] Consider adding support for Handlebars .hbs file ending #111
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[closed] Consider adding support for hjson. #110
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[closed] Add mime type for Opus audio files #94
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[closed] Consider making the
Requesting New Types
information more visible #77
v1.3.0 (05/02/2015)¶ ↑
-
[closed] Add common name? #114
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[closed] application/x-yaml #104
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[closed] Add mime type for WOFF file format 2.0 #102
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[closed] application/x-msi for .msi #99
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[closed] Add mimetype for gettext translation files #98
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[closed] collaborators #88
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[closed] getting errot in installation of mime module…any1 can help? #87
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[closed] should application/json's charset be utf8? #86
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[closed] Add “license” and “licenses” to package.json #81
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[closed] lookup with extension-less file on Windows returns wrong type #68
v1.2.11 (15/08/2013)¶ ↑
-
[closed] Update mime.types #65
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[closed] Publish a new version #63
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[closed] README should state upfront that “application/octet-stream” is default for unknown extension #55
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[closed] Suggested improvement to the charset API #52
v1.2.10 (25/07/2013)¶ ↑
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[closed] Mime type for woff files should be application/font-woff and not application/x-font-woff #62
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[closed] node.types in conflict with mime.types #51
v1.2.9 (17/01/2013)¶ ↑
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[closed] Please update “mime” NPM #49
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[closed] Please add semicolon #46
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[closed] parse full mime types #43
v1.2.8 (10/01/2013)¶ ↑
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[closed] /js directory mime is application/javascript. Is it correct? #47
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[closed] Add mime types for lua code. #45
v1.2.7 (19/10/2012)¶ ↑
-
[closed] cannot install 1.2.7 via npm #41
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[closed] Transfer ownership to @broofa #36
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[closed] it's wrong to set charset to UTF-8 for text #30
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[closed] Allow multiple instances of MIME types container #27
v1.2.5 (16/02/2012)¶ ↑
-
[closed] When looking up a types, check hasOwnProperty #23
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[closed] Bump version to 1.2.2 #18
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[closed] No license #16
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[closed] Some types missing that are used by html5/css3 #13
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[closed] npm install fails for 1.2.1 #12
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[closed] image/pjpeg + image/x-png #10
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[closed] symlink #8
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[closed] gzip #2
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[closed] ALL CAPS filenames return incorrect mime type #1


001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019 package org.apache.hadoop.yarn.api; 020 021 import java.io.IOException; 022 023 import org.apache.hadoop.classification.InterfaceAudience.Public; 024 import org.apache.hadoop.classification.InterfaceStability.Stable; 025 import org.apache.hadoop.yarn.api.protocolrecords.GetContainerStatusesRequest; 026 import org.apache.hadoop.yarn.api.protocolrecords.GetContainerStatusesResponse; 027 import org.apache.hadoop.yarn.api.protocolrecords.StartContainerRequest; 028 import org.apache.hadoop.yarn.api.protocolrecords.StartContainersRequest; 029 import org.apache.hadoop.yarn.api.protocolrecords.StartContainersResponse; 030 import org.apache.hadoop.yarn.api.protocolrecords.StopContainersRequest; 031 import org.apache.hadoop.yarn.api.protocolrecords.StopContainersResponse; 032 import org.apache.hadoop.yarn.api.records.Container; 033 import org.apache.hadoop.yarn.api.records.ContainerId; 034 import org.apache.hadoop.yarn.api.records.ContainerLaunchContext; 035 import org.apache.hadoop.yarn.api.records.ContainerStatus; 036 import org.apache.hadoop.yarn.exceptions.NMNotYetReadyException; 037 import org.apache.hadoop.yarn.exceptions.YarnException; 038 039 /** 040 *
The protocol between an ApplicationMaster and a 041 * NodeManager to start/stop containers and to get status 042 * of running containers.
 043 * 044 *
If security is enabled the NodeManager verifies that the 045 * ApplicationMaster has truly been allocated the container 046 * by the ResourceManager and also verifies all interactions such 047 * as stopping the container or obtaining status information for the container. 048 *
 049 */ 050 @Public 051 @Stable 052 public interface ContainerManagementProtocol { 053 054 /** 055 *
 056 * The ApplicationMaster provides a list of 057 * {@link StartContainerRequest}s to a NodeManager to 058 * start {@link Container}s allocated to it using this interface. 059 *
 060 * 061 *
 062 * The ApplicationMaster has to provide details such as allocated 063 * resource capability, security tokens (if enabled), command to be executed 064 * to start the container, environment for the process, necessary 065 * binaries/jar/shared-objects etc. via the {@link ContainerLaunchContext} in 066 * the {@link StartContainerRequest}. 067 *
 068 * 069 *
 070 * The NodeManager sends a response via 071 * {@link StartContainersResponse} which includes a list of 072 * {@link Container}s of successfully launched {@link Container}s, a 073 * containerId-to-exception map for each failed {@link StartContainerRequest} in 074 * which the exception indicates errors from per container and a 075 * allServicesMetaData map between the names of auxiliary services and their 076 * corresponding meta-data. Note: None-container-specific exceptions will 077 * still be thrown by the API method itself. 078 *
 079 *
 080 * The ApplicationMaster can use 081 * {@link #getContainerStatuses(GetContainerStatusesRequest)} to get updated 082 * statuses of the to-be-launched or launched containers. 083 *
 084 * 085 * @param request 086 * request to start a list of containers 087 * @return response including conatinerIds of all successfully launched 088 * containers, a containerId-to-exception map for failed requests and 089 * a allServicesMetaData map. 090 * @throws YarnException 091 * @throws IOException 092 * @throws NMNotYetReadyException 093 * This exception is thrown when NM starts from scratch but has not 094 * yet connected with RM. 095 */ 096 @Public 097 @Stable 098 StartContainersResponse startContainers(StartContainersRequest request) 099 throws YarnException, IOException; 100 101 /** 102 *
 103 * The ApplicationMaster requests a NodeManager to 104 * stop a list of {@link Container}s allocated to it using this 105 * interface. 106 *
 107 * 108 *
 109 * The ApplicationMaster sends a {@link StopContainersRequest} 110 * which includes the {@link ContainerId}s of the containers to be stopped. 111 *
 112 * 113 *
 114 * The NodeManager sends a response via 115 * {@link StopContainersResponse} which includes a list of {@link ContainerId} 116 * s of successfully stopped containers, a containerId-to-exception map for 117 * each failed request in which the exception indicates errors from per 118 * container. Note: None-container-specific exceptions will still be thrown by 119 * the API method itself. ApplicationMaster can use 120 * {@link #getContainerStatuses(GetContainerStatusesRequest)} to get updated 121 * statuses of the containers. 122 *
 123 * 124 * @param request 125 * request to stop a list of containers 126 * @return response which includes a list of containerIds of successfully 127 * stopped containers, a containerId-to-exception map for failed 128 * requests. 129 * @throws YarnException 130 * @throws IOException 131 */ 132 @Public 133 @Stable 134 StopContainersResponse stopContainers(StopContainersRequest request) 135 throws YarnException, IOException; 136 137 /** 138 *
 139 * The API used by the ApplicationMaster to request for current 140 * statuses of Containers from the NodeManager. 141 *
 142 * 143 *
 144 * The ApplicationMaster sends a 145 * {@link GetContainerStatusesRequest} which includes the {@link ContainerId}s 146 * of all containers whose statuses are needed. 147 *
 148 * 149 *
 150 * The NodeManager responds with 151 * {@link GetContainerStatusesResponse} which includes a list of 152 * {@link ContainerStatus} of the successfully queried containers and a 153 * containerId-to-exception map for each failed request in which the exception 154 * indicates errors from per container. Note: None-container-specific 155 * exceptions will still be thrown by the API method itself. 156 *
 157 * 158 * @param request 159 * request to get ContainerStatuses of containers with 160 * the specified ContainerIds 161 * @return response containing the list of ContainerStatus of the 162 * successfully queried containers and a containerId-to-exception map 163 * for failed requests. 164 * 165 * @throws YarnException 166 * @throws IOException 167 */ 168 @Public 169 @Stable 170 GetContainerStatusesResponse getContainerStatuses( 171 GetContainerStatusesRequest request) throws YarnException, 172 IOException; 173 }


Whether you need a blowout, makeup for a photoshoot or are looking for the best hair and makeup team on the Big Island to beautify your entire bridal party. We have packages and a la carte services for you to choose from. Our mobile hair and makeup team can meet you wherever you need on Oahu, Kauai, Maui and Big Island.


A collection of matrix functions for teaching and learning matrix linear algebra as used in multivariate statistical methods. These functions are mainly for tutorial purposes in learning matrix algebra ideas using R. In some cases, functions are provided for concepts available elsewhere in R, but where the function call or name is not obvious. In other cases, functions are provided to show or demonstrate an algorithm. In addition, a collection of functions are provided for drawing vector diagrams in 2D and 3D.
| Version: | 0.9.1 |
| Imports: | xtable, MASS, rgl, car, methods |
| Suggests: | knitr, rglwidget, rmarkdown, carData |
| Published: | 2018-04-04 |
| Author: | Michael Friendly [aut, cre], John Fox [aut], Phil Chalmers [aut], Georges Monette [ctb], Gaston Sanchez [ctb] |
| Maintainer: | Michael Friendly <friendly at yorku.ca> |
| BugReports: | https://github.com/friendly/matlib/issues |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: | https://github.com/friendly/matlib |
| NeedsCompilation: | no |
| Materials: | NEWS |
| CRAN checks: | matlib results |
| Reference manual: | matlib.pdf |
| Vignettes: |
Properties of determinants Evaluation of determinants Eigenvalues and Eigenvectors: Properties Eigenvalues: Spectral Decomposition Generalized inverse Gram-Schmidt Orthogonalization and Regression Inverse of a matrix Matrix inversion by elementary row operations Solving Linear Equations |
| Package source: | matlib_0.9.1.tar.gz |
| Windows binaries: | r-devel: matlib_0.9.1.zip, r-release: matlib_0.9.1.zip, r-oldrel: matlib_0.9.1.zip |
| OS X binaries: | r-release: matlib_0.9.1.tgz, r-oldrel: matlib_0.9.1.tgz |
| Old sources: | matlib archive |
| Reverse suggests: | MPkn |
Please use the canonical form https://CRAN.R-project.org/package=matlib to link to this page.


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Building a Critical Mass Sound System - Part 2
Remote sounds
I’m going to assume you have some basic technical skill and will be able to install the Pi operating system, connect your monitor, mouse and keyboard without my help.
Parts List
-
Raspberry Pi (Version B+) (£30): This is a small computer that will automatically start our bluetooth network. Raspberry Pi B+ on Amazon.
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Raspberry Pi Case (£6): You can choose whatever you like, or entirely skip it. I chose the fairly robust ModMyPi RPi Model B+ Case.
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Power supply: (£5) You’ll need a power supply as one isn’t provided. I can’t remember where I bought mine, but any micro USB charger should do.
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NOOBS SD Card (£7): I’d recommend the NOOBS SD Card.
-
Bluetooth Adapter (£10): ASUS products are well regarded, compatible with the Raspberry Pi and are not too expensive. The Asus USB-BT400 fit the bill.
-
HDMI to DVI Cable (£5): This is needed so we can connect the monitor to the Pi and see what we’re doing. I went ahead and bought the World of Data - 1m HDMI to DVI Cable .
Total: £64 - Not too shabby for a system that you can remotely send audio to.
Operating System
I used Arch Linux from the NOOBs setup. This operating system doesn’t come with a user interface so having some experience with the terminal is required.
Installing Bluetooth
I followed a guide by delx so in the interest of not blogging about exactly the same thing I’ll pass you over to them.
If you do run into any problems, Please ping me on Twitter (handle below) and I’ll try and aide you as best as I can and update this post with the answers.
Conclusion
So there you go! A device smaller than your hand, that has fantastic range and doesn’t sound half bad.
Part 3 is coming soon which is going to go over how to choose speaker drivers.


order a pizza of your choice
choose toppings
choose topping
pepperoni
olives
cheese
choose crust
choose topping
stuffed
thin
pan
choose size
choose your size
large
small
meduim
Enter
Your total cost is :
dollars


Preparation time
less than 30 mins
Cooking time
no cooking required
Serves
Serves 4
For the salsa, place all of the salsa ingredients together into a bowl and mix well to combine. Set aside.
For the guacamole, place all of the guacamole ingredients together into a food processor and blend until smooth.
For the tacos, slice the fish fillets into strips 1cm/½in wide and season with salt and freshly ground black pepper. (You can use the rest of the fish for making fish stock, or for another recipe.)
Place the flour, eggs, water and a pinch of salt into a food processor and blend until smooth.
Heat a deep-fat fryer to 190C/375F. Alternatively, half-fill a deep, thick-based pan with the sunflower oil and heat until a cube of bread dropped in sizzles and turns golden in 30 seconds. (CAUTION: hot oil can be dangerous. Do not leave unattended.)
Dip the strips of fish into the batter, then fry in batches in the oil for 3-4 minutes, or until golden-brown and crisp. Remove with a slotted spoon and drain on kitchen paper.
To serve, lay the tortilla wraps down flat on a plate or flat surface and place some lettuce leaves down the centre of each wrap. Arrange the fried fish over the lettuce, then spoon over some salsa and soured cream. Fold in the sides, roll up as tightly as you can and serve each taco with a dollop of guacamole.


Consider a set of unit vectors.
Where, and so on.
That is for every all vectors value are zeros, expect for row which is 1.
Symmetric Positive Definite Matrix: If a symmetric matrix satisfy the condition for all non-zero column vectors of real numbers, then the matrix is said to be a symmetric positive definite matrix.
Consider the symmetric positive definite matrix A as follows:
The condition holds for all .
Now suppose for any value in diagonal of matrix A is not positive, that is .
Choose from the set X and calculate.
That is . So, will be negative.
This is a contradiction to the initial consideration; A is a symmetric positive definite matrix.
Therefore, if A is a symmetric positiv e definite matrix then the value of , . That is all the diagonal elements of the symmetric positive definite matrix are positive.
The matrix is which is symmetric positive definite matrix. Its determinant is positive by “completing the square”. It can be proved as follows:
Let x = -by/a and A is positive definite so,
=
The determinant of the above equation is given as:
Here, b = 2by, a = a, c =
So, substituting the values of a, b and c in D it can be deduced that:
Ignoring the constant value that is 4, the expression becomes:
=
=
Thus, so, it means that >0 because a>0
A symmetric positive-definite matrix:
Let A is the matrix which is real in nature and can be positive-definite for a non-zero vector, if:
A symmetric positive-definite matrix has following properties:
• All the Eigenvalues of A will be positive.
• The largest element of the matrix is always there on the diagonal.
• All the diagonal elements of A will be positive.
• Matrix A will be a nonsingular matrix.
Consider the symmetric positive-definite matrix A as:
To prove that the maximum element lies on the diagonal, apply the same permutation to the both rows and columns of matrix A, the resultant matrix will continue to be symmetric and positive-definite.
The SYLVESTER’S CRITERION states that: A symmetric matrix A is positive-definite if and only if:
…… (1)
Where, A is the matrix formed by the intersection of the first k rows and columns of A and in a symmetric matrix .
If there is any element at position, it will also there at the position of. Thus, every element which is not at a diagonal, it will also appear at another position of the matrix. Further, for, applying the suitable permutation, SYLVESTER’S CRITERION gives:
…… (2)
Now, consider the positive-definite matrix given below:
In symmetric, real, positive-definite matrix, there is always large multiplier with a positive-definite matrix.
• In the above matrix, large multiplier is 10001. Due to this multiplier, the determinant of the matrix becomes positive.
• Knowing this, large multipliers will not try to create unstable conditions unless they lead to growth of the transformed element, because the length of matrix continuously increases.
• And to make the determinant positive, the diagonal elements products have to be made larger than the non-diagonal terms, which are used in the corresponding calculation.
• Further, as all the reduced matricesare positive-definite, their maximum element will lie on the diagonal (consider the above determinant equation), which is one of their properties stated above.
• Also from equation (2) either one of the element that is or should be greater than to hold the inequality of equation (1). Hence the max element should lie in the diagonal.
A symmetric positive-definite matrix:
A matrix A, which is real in nature, can be positive-definite for a non-zero vector, if:
… … (1)
A symmetric positive-definite matrix has following properties:
a. All the Eigen values of A will be positive.
b. The largest element of the matrix is always there on the diagonal.
c. All the diagonal elements of A will be positive.
d. A will be a nonsingular matrix.
Consider a symmetric positive-definite matrix A as:
To prove that determinant of each leading sub-matrix of a symmetric positive matrix is positive, suppose that be any leading sub-matrix of a symmetric positive-definite matrix.
After removing corresponding rows and columns of the symmetric matrix, the sub-matrix is also going to be symmetric in nature.
So, is a symmetric matrix. … … (a)
Now, consider that be a particular column inside this sub-matrix, having p entries, which are non-zero in nature.
Increase to make it into an n-vector by inserting zeros into the places corresponding to the particular rows ofwhich were previously removed in the form. Then is not the zero vector and a relation is derive.
So, is a non-zero vector. … … (b)
Now combining the statement (a) and (b) and also putting it in equation (1),
This is a sufficient and necessary condition for leading sub-matrixes in a symmetric definite matrix to be positive.
Hence, the determinant of each leading sub-matrix of a symmetric positive-definite matrix is positive.
Consider the following function:
Calculate the function of the form such that, it is the best least-square fit to the data points.
Consider,
Construct the matrix of values of the basis functions at the points
as follows:
Substitute the point values from (1) in the above matrix A.
Calculate the pseudoinverse of the matrix A using the formula,
.
Calculate .
Calculate .
The normal equation is given by the equation, . Solve it for C.
Hence, the constants of the function (1) are as follows:
Substitute the values of C in (1) to get the required function.
Therefore, the function that is best least-square fit to the data points and is .
The following four equations are satisfied by the pseudoinverse of the matrix .
Pseudoinverse of the matrix is given by the following equation:
Show that pseudoinverse satisfies the equation (1).
Therefore, pseudoinverse satisfies the equation .
Show that pseudoinverse satisfies the equation (2).
Show that pseudoinverse satisfies the equation (3).
Consider left hand side of equation (3).
Consider right hand side of equation (3).
From equations (6) and (7)
Consider left hand side of equation (4).
Consider right hand side of equation (4).
From equations (8) and (9)


02 - Name Input with Parameters example
In this basic example a dialog will open when you click the link below.
The result of the dialog will be retreived and the link is updated with the resulting text from the dialog.
- Now we also pass the name as a parameter if it has been set before
- We also updated the dialog to recognize Enter keystrokes
- Pressing "Cancel" will trigger the "fail" callback since we now use reject inside the dialog


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Quick-Credit
Dashboard
Apply for a Loan
View Loans
Verify Users
Verify Seun so they can start apply for loans
Accept
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Verify Jones so they can start apply for loans
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Promote Pawn
Promote Pawn
New Game
Undo Move
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New Game
Save Game
id:
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Change Orientation On Move?


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