Simple and fast event emitter library. Subscription is based on a unique Token, which can be used to unsubscribe from the topic.
The Eventer is used in LightningChart® JS charting library. https://www.arction.com/
npm install --save @arction/eventer
Online documentation is available at arction.github.io/eventer
import { Eventer } from '@arction/eventer'
const eventer = new Eventer()
// new topic is created, handler is added as the first subscriber to the topic
const token1 = eventer.on('topic1', () => console.log('I am called from topic1'))
// 'topic1' already exists, so new listener is simply added to existing collection of handlers
const token2 = eventer.on('topic1', () => console.log('I am also called from topic1'))
// new collection of handlers is created for the second topic
// the function is added to it
eventer.on('topic2', () => console.log('I am called from topic2'))
eventer.emit('topic1')
// calls two functions which listen to the event
//
// outputs:
// I am called from topic1
// I am also called from topic1
eventer.emit('topic2')
// calls single functions which listen to the event
//
// outputs:
// I am called from topic2
// remove the second listener from the first topic by token
eventer.off(token2)
eventer.emit('topic1')
// calls single functions which listen to the event
//
// outputs:
// I am called from topic1
// remove all listeners from all topics
eventer.allOff()
eventer.emit('topic2')
// nothing happened, since all subscriptions were terminated
Subscribing to a topic is easy.
eventer.on('topic', ()=>{ console.log('Topic handler') })
Multiple subscriptions to a single topic can exist.
eventer.on('topic', ()=>{ console.log('Topic handler') })
eventer.on('topic2', ()=>{ console.log('Topic 2 handler') })
eventer.on('topic3', ()=>{ console.log('Topic 3 handler') })
You can unsubscribe from a single topic by using the Token returned by eventer when you subscribed to the topic.
const token = eventer.on('topic', ()=>{ console.log('Topic handler') })
eventer.off(token)
You can also unsubscibe all listeners from a topic.
eventer.topicOff('topic')
It is also possible to unsubscribe all topics and all listeners.
eventer.allOff()
Events can be emitted for a topic. The emit can contain 0 or more arguments that will be provided to the topic listeners.
eventer.emit('topic')
eventer.on('topic2', ( arg1, arg2 ) => console.log( arg1, arg2 ))
eventer.emit('topic2', 'Hello ', 'World')
The project is developed using TypeScript. Build system of the project heavily relies on Node.js. Dependencies are managed with npm, therefore, remember to run npm install before starting of anything else.
There are several npm scripts, which are used for development process:
| Name | Command | Description |
|---|---|---|
| build | npm run build | run build system |
| test | npm test | run tests and watch |
| lint | npm run lint | run static analyzer and watch |
| docs | npm run docs | generate typedoc documentation |
| ci:test | npm run ci:test | run tests once |
| ci:lint | npm run ci:lint | run static analyzer once |
| ci:watch | npm run ci:watch | run CI circle and watch |


Root takes the responsibility out of your hands.
Watch Root get smarter with age.
It learns as it collects more information.
Observe your energy savings skyrocket.
Root is a profitable investment.
Simple. Green. Profitable.
Why?
Choose your max electricity bill. Root's optimization algorithms will make the most of it.
Enter your home, pre-cooled (or pre-heated) for your arrival, without touching a button.
Have your TV automatically turn off if you left it idle.
Root brings energy efficiency to the masses.
We stand by using resources without waste.
Root protects the environment using artificial intelligence.
We stand by sustainability.
Root removes wealth as a requirement for smart homes.
We equip everyone to stand with us.


E-mail: {{ user.email }}
{% endif %} {# end userData #} {# userRolesDisplay #} {% if user.groups.all %}User has the following roles for {{ site.name }}:
{% for group in user.groups.all %}{{ group.name }}
{% endfor %} {% endif %} {# end userRolesDisplay #} {# logoutForm #} {# end logoutForm #} {# editProfileButtons #}Try out different languages on the Authentication Service.
The following links will take you to the edit profile page in the language indicated on the button.
{# end editProfileButtons #}


Accessories
- Arm Support
- Aquasonic 100 Ultrasonic Gel
- Brewer Phlebotomy Chair
- CIRS Bona Fide DEXA Phantom
- CIRS ISO Cube Daily QA Phantom
- Economy Apron
- Economy Transport Stretcher
- ErgoFlex Series Assistant Stools
- Exam and Surgical Radiation Reducing Gloves
- Infab's Flip Top Radiation Protection Goggles
- Infab's SorbX Disposible Scatter Caps
- Measurement Calipers
- Merchant Board
- MRI Safe Stretcher
- MRI Safe Wheelchair
- NEMA Cardiology Phantom
- Patient Transfer System
- Patient Warming Blanket
- Pedigo Two-Step Chrome Step Stool
- Pro-MAM Accreditiation Phantom
- Protech Full Panorama Mask
- Radiation Badge Storage Boards
- Radiography/Fuoroscopy Accreditation Phantom
- Radiolucent Immobilizer
- Rando Phantoms
- Screw Adjustable Stool
- Sound Pro Combination Ultrasound Table
- Techno-Aide Clinical Chair
- Techno-Aide Standard Thyroid Collar
- Ultrasound Composite Gel Warmers
- Universal Patient Restraint
- Wolf's Compression Paddle
- 11 Step Wedge Penetrometer
- 50-Piece Phillips Safety Marker Set


Frequently Asked Questions¶
I found an issue. What do I do?
If you think you found an issue or a bug, please use our GitHub issue tracker. Provide as much information as you can about your environment as well as a minimum working example that reproduces the issue.
It seems like some workers are just waiting for something. But I don’t receive an error message. Is this a normal behavior?
No, it’s not. Please try enabling debug output to see if any exceptions on the worker side occur. Try running your optimization locally by either using really small budgets, or replacing an expensive computation by a fictitious value. Often, the problem stems from a value returned by the compute method that is not serializable by the underlying Pyro4 package. Make sure all values that the compute method returns are build-in Python datatype, e.g. lists and dictionaries.
Pip doesn’t find the HpBandster package.
Please check, if you are using pip3. HpBandster is developed for python3.
How do I set the budgets and for how many iterations should I optimize?
The meaning of the budgets and the actual values are highly problem specific, so we cannot give a general answer here. Please check the best practices for some advice on the budgets and the number of iterations.
None of the configuration sampled by BOHB come from the model?
If you analyse you run and you find that none of the configurations were sampled from the model, there are a few possible explanations:
- Maybe your run was simply to short. BOHB starts building a model after d+2 observations have been made on any budget (usually first on the smallest one) where d is the number of parameters in the configuration space. If your run was relatively short compared to the dimensionality of the space, there might not have been a model to sample from. Consider running it longer (check:ref:this advanced example<warmstarting> to see how to continue from previous evaluations).
- Your ConfigurationSpace might contain features not supported by BOHB, namely ordinals and constants. Those are supported by the ConfigSpace package, but are currently not handled by BOHB.
- If your search space is restricted by several forbidden clauses sampling from the model could yield only forbidden configurations (unlikely in practice, but still possible). To make BOHB aware of the constraints and learn to avoid them, try to remove the forbiddens from the configuration space definition and make the worker check for them in the compute. If a configuration violates the constraints, you can simply raise an exception in the worker. That way, HpBandSter automatically catches that and model based optimizers will associated the worst possible loss with that configuration. That way, BOHB learns to avoid the forbidden regions and tries to actively sample in the space of feasible configurations.
How can I improve performance in the presence of forbidden clauses?
While the ConfigSpace allows to define forbidden clauses, this way of incorporating constraints is suboptimal for model-based optimizers, because they cannot learn about these constraints. See part c. in the question above for a solution.


nl3 - Natural Language Triples
work.flow - The Workflow Library
more...
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Percolation with inhibition - part 2
29 Apr 2016This part 2 in the series on percolation with inhbition. If you have not yet read part 1 you can find it here.
In this post we will try to get an intuition for how many vertices eventually turn active in the process. Let us assume that we have vertices in total, of them which send positive messages and of them which send negative messages.
For a fixed vertex in the graph we can assume that it does not know if its neighbours are positive or negative. Since it only receives at most one message from each neighbour we can think of these messages being independently positive with probability and negative with probability . Formally these events are not independent but the dependence is weak so you can assume they are to get some intuition behind the process.
This allows us to model the process as a Markov chain. If you are unfamiliar with Markov chains there is a great pictorial explanation here. Our Markov chain consists of infinitely many states which represent the potential of our single vertex under consideration. The states are given by the set and correspond to the value of the potential of the vertex. Like all vertices which are not active at the start it starts with its potential in state 0 and it can only stop if it ever reaches state . The transition probabilities are given as the probability of increasing or decreasing the potential as explained in the previous paragraph.
Below you see an interactive version of the process. The fact that state is an absorbing state is denoted by a self-loop. Since we do not have space for infinitely many states the left-most state represents all states smaller or equal to . You can imagine the chain extending infinitely to the left. Additionally we reset the process if it has not finished after 10 steps (you can change this variable below). Note that the process should always reach if with enough many steps. However, if we have a drift to the left. This means that if the potential becomes too small there is hardly any chance that it will be able to recover. Try it out by choosing and for example.
Below you can see some statistics of the simulations of the Markov chain. The histogram shows after how many steps the potential reached . Observe that for the most likely outcome is that the process goes directly to .
The plot below shows which fraction of all the simulations ever reach within the given number of steps. You can use it to estimate which fraction of the vertices turn active in the bootstrap percolation process. Just set the maximum number of steps in the Markov chain to the average degree of the graph.
By pressing the update parameters button you start a new simulation and draw a new curve. The old one is not lost however so you can compare different parameters.


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China’s Pres. Xi: Long-term improving trend for china's economy will not change
by Dhwani MehtaXinhua reports the latest comments from China’s President Xi Jinping is on the wires now, via Reuters, with the key headlines found below.
The long-term improving trend for china's economy will not change.
China's economy has great resilience, potential and room for manoeuvre.
Have full confidence in china's development.


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Smart ESA relies on different strategic partnerships. The partners support the startups in different ways: financing, material, international market access, expertise, etc. Learn more about our partners by clicking below
Smart ESA has accelerated 49 startups from different industries. Learn more about the startups by clicking below
Smart ESA relies on the competencies and expertise of several experts. These experts support the startups in specific subject matters. Learn more about the coaches by clicking below.
Smart ESA relies on different strategic partnerships. The partners support the startups in different ways: financing, material, international market access, expertise, etc. Learn more about our partners by clicking below
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White to play 54
pips White=147 Black=166
(CorrectAnswer= 0/0, ErrorScore= 0)
1. 13/4 eq: +0.221 56.21% (G:10.04% B:0.31%) 43.79% (G: 7.09% B:0.22%) 2. 13/8 6/2 eq: +0.201 (-0.020) 55.66% (G:10.23% B:0.31%) 44.34% (G: 7.71% B:0.24%) 3. 20/16 20/15 eq: +0.180 (-0.041) 55.80% (G:11.30% B:0.44%) 44.20% (G:11.10% B:0.32%) 4. 13/9 6/1* eq: +0.172 (-0.049) 54.82% (G:10.84% B:0.33%) 45.18% (G: 7.75% B:0.23%) 5. 8/3 7/3 eq: +0.136 (-0.085) 53.41% (G:11.56% B:0.35%) 46.59% (G: 7.88% B:0.21%)


MongoDB Extension for Yii 2
This extension provides the MongoDB integration for the Yii framework 2.0.
For license information check the LICENSE-file.
Documentation is at docs/guide/README.md.
Installation ¶
This extension requires MongoDB PHP Extension version 1.0.0 or higher.
This extension requires MongoDB server version 3.0 or higher.
The preferred way to install this extension is through composer.
Either run
php composer.phar require --prefer-dist yiisoft/yii2-mongodb
or add
"yiisoft/yii2-mongodb": "~2.1.0"
to the require section of your composer.json.
Configuration ¶
To use this extension, simply add the following code in your application configuration:
return [
//....
'components' => [
'mongodb' => [
'class' => '\yii\mongodb\Connection',
'dsn' => 'mongodb://@localhost:27017/mydatabase',
'options' => [
"username" => "Username",
"password" => "Password"
]
],
],
];
Class Reference
| Class | Description |
|---|---|
| yii\mongodb\ActiveFixture | ActiveFixture represents a fixture backed up by a MongoDB ActiveRecord class or a MongoDB collection. |
| yii\mongodb\ActiveQuery | ActiveQuery represents a Mongo query associated with an Active Record class. |
| yii\mongodb\ActiveRecord | ActiveRecord is the base class for classes representing Mongo documents in terms of objects. |
| yii\mongodb\BatchQueryResult | BatchQueryResult represents a batch query from which you can retrieve data in batches. |
| yii\mongodb\Cache | Cache implements a cache application component by storing cached data in a MongoDB. |
| yii\mongodb\Collection | Collection represents the Mongo collection information. |
| yii\mongodb\Command | Command represents MongoDB statement such as command or query. |
| yii\mongodb\Connection | Connection represents a connection to a MongoDb server. |
| yii\mongodb\Database | Database represents the MongoDB database information. |
| yii\mongodb\Exception | Exception represents an exception that is caused by some Mongo-related operations. |
| yii\mongodb\LogBuilder | LogBuilder allows composition and escaping of the log entries. |
| yii\mongodb\Migration | Migration is the base class for representing a MongoDB migration. |
| yii\mongodb\Query | Query represents Mongo "find" operation. |
| yii\mongodb\QueryBuilder | QueryBuilder builds a MongoDB command statements. |
| yii\mongodb\Session | Session extends yii\web\Session by using MongoDB as session data storage. |
| yii\mongodb\console\controllers\MigrateController | Manages application MongoDB migrations. |
| yii\mongodb\debug\ExplainAction | ExplainAction provides EXPLAIN information for MongoDB queries |
| yii\mongodb\debug\MongoDbPanel | MongoDbPanel panel that collects and displays MongoDB queries performed. |
| yii\mongodb\file\ActiveQuery | ActiveQuery represents a Mongo query associated with an file Active Record class. |
| yii\mongodb\file\ActiveRecord | ActiveRecord is the base class for classes representing Mongo GridFS files in terms of objects. |
| yii\mongodb\file\Collection | Collection represents the Mongo GridFS collection information. |
| yii\mongodb\file\Cursor | Cursor is a wrapper around \MongoDB\Driver\Cursor, which allows returning of the record with yii\mongodb\file\Download instance attached. |
| yii\mongodb\file\Download | Download represents the GridFS download operation. |
| yii\mongodb\file\Query | Query represents Mongo "find" operation for GridFS collection. |
| yii\mongodb\file\StreamWrapper | StreamWrapper provides stream wrapper for MongoDB GridFS, allowing file operations via regular PHP stream resources. |
| yii\mongodb\file\Upload | Upload represents the GridFS upload operation. |
| yii\mongodb\gii\model\Generator | This generator will generate ActiveRecord class for the specified MongoDB collection. |
| yii\mongodb\i18n\MongoDbMessageSource | MongoDbMessageSource extends yii\i18n\MessageSource and represents a message source that stores translated messages in MongoDB collection. |
| yii\mongodb\log\MongoDbTarget | MongoDbTarget stores log messages in a MongoDB collection. |
| yii\mongodb\rbac\MongoDbManager | MongoDbManager represents an authorization manager that stores authorization information in MongoDB. |
| yii\mongodb\rbac\Permission | Permission is a special version of yii\rbac\Permission dedicated to MongoDB RBAC implementation. |
| yii\mongodb\rbac\Role | Role is a special version of yii\rbac\Role dedicated to MongoDB RBAC implementation. |
| yii\mongodb\validators\MongoDateValidator | MongoDateValidator is an enhanced version of yii\validators\DateValidator, which supports \MongoDate values. |
| yii\mongodb\validators\MongoIdValidator | MongoIdValidator verifies if the attribute is a valid Mongo ID. |


“Alexis brought energy and elegance to the dance performance. My family and friends loved it. She is a great performer and a beautiful person .”
-Massoud H. Holiday Party
Alexis delivers a professional, highly entertaining, engaging and unforgettable experience, for your special event. Alexis personalizes all of her performances, so choose from the excitement of classic, ancient belly dance moves, the fluidity of double silk veils, a dazzling drum solo cane, double cane, and Isis Wings. Alexis will get your guests of all ages on their feet with a fun and easy mini dance lesson.


Javascript DOM programing
Some texts in paragraph,just for learning web develope technology.
Some texts in the ul elements
- item1
- item2
- item3
Test div...
Javascript pseudo protocal
A link Open by javascript pseudo protocal
Use event handler instead
No graceful way
Open a link by event handler
Graceful way
Open a link in a gracefull way


[CHAPTER 671D]
HEALTH CARE PEER REVIEW
Part I. General Provisions
Section
671D-1 Short title
671D-2 Purpose
671D-3 Findings
671D-4 Definitions
Part II. Promotion of Professional Review Activities
671D-10 Limitation of damages for professional review actions
671D-11 Standards for professional review actions
671D-12 Attorney's fees
671D-13 Guidelines of the director
671D-14 Construction
Cross References
Diversion program for chemically dependent nurses, see chapter 334D.


Can you finish my sentences?
My dearest Arthur,
I am so pleasantly surprised that the game of Jenga I decided to play with you, because I was
one January afternoon, has lead to so many wonderful adventures …
0
submit


---
layout: definitions
---
Let $A$ be $n\times n$. $A$ is left invertiable if there exists some $n\times n$ matrix $B$ such that $BA=I_n$, where $B$ is the left inverse.
$A$ is right invertaible if there exists some $n\times n$ matrix $C$ such that $AC=I_n$, where $C$ is the right inverse.
If both the left and right inverse exists, then $A$ is invertible if there exists some $B$ such that $AB=I_n=BA$. We usually denote the inverse with $A^{-1}$ such that $A^{-1}A=AA^{-1}=I$.
Concepts
For finite square matrices, if $A$ is left invertible then it is also right invertible. However if $A$ is an infinite square matrix, then it may only have a left or right inverse.
Inverses can be conputed with block matrices. Form an augmnted matrix $[A|I_n]$, then row reduce until the left hand side is in row reduced echelon form and we get $[R|P]$. Then $A$ is invertible if and only if $R=I_n$ and $P=A^{-1}$
Used In
Coming soon
Hypothesis
Coming soon
Results
Coming soon


Notebooks
Story: Words and sentences: given by Tamme
Words and sentences: given by Tamme
Title
Words and sentences: given by Tamme
Collection
Summary
Words and sentences contributed by Tamme (and occasionally by !nanni). They include many references to personal experiences. These include the people of their country, information about their relations and early childhood memories, as well as numerous names and descriptions of plants and animals (mostly in relation to food and eating). There are also many songs and the names of various !kun known by the boys. |han≠kass'o provides many |xam equivalents to various !kun words.
Comments
1) Date on p.9141: 10 October 1879; p.9223: 7 January, 2) p.9145v: see The song of the ≠ne≠nebbi (woodpigeon), 2) 9151v: see The song of the sauko, 3) p.9152v: see The song of the ≠na≠n'arro, 4) p.9156v: see The names of !nanni's relations, 5) p.9181v: (8 December 1879) see A song of the sun Bushmen, 6) p.9183v: see Different peoples and Bushmen in !nanni and Tamme's country, 7) p.9191v: see The song of the ||gani (a bird), 8) p.9197v: see About Tamme's relations, 9) p.9223v: see Different peoples and Bushmen in !nanni and Tamme's country, 10) This is found in Book XI & XII-3
Contributors
Date
19 October 1879 – 9 January 1880
Categories
Words and sentences, History (personal), Plants and animals, Custom and daily life, Poetry
Keywords
vocabulary (!kun) , vocabulary (!kun-|xam) , words and sentences (given by Tamme) , words and sentences (given by !nanni) , words and sentences (given by |han≠kass'o) , Tamme (his relations) , Tamme (his personal history) , !nanni (his relations) , !nanni (his personal history) , plants (!kun names of) , plants (that are poisonous) , plants (|xam names for) , plants (edible) , plants (descriptions of various found in !kun country) , plants (the preparation and cooking of) , animals (and insects) , animals (!kun names of) , animals (poisonous) , animals (|xam names for) , animals (edible) , animals (descriptions of) , animals (found in !kun country) , animals (the preparation and cooking of) , personal history (!nanni and Tamme's) , songs (of the !kun) , songs (names of) , names (of songs of the !kun) , names (of !kun known to !nanni and Tamme) , names (of plants) , names (of animals) , names (of peoples in !kun country) , food (eaten by the !kun) , food (names of plants and animals eaten by the !kun) , poison (plants that are poisonous)
Story Pages
9141-9151, 9153-9161, 9163, 9167-9175, 9179-9185, 9188-9200, 9202-9207, 9222-9223, 9226


Tips for moving to Houston - Penny Arcade Forums
I'm moving to Houston, TX this spring. I plan on . What neighborhoods to avoid, what suburbs are a good place to live, so on and so forth.
http://forums.penny-arcade.com/discussion/151964/tips-for-moving-to-houston
The Cities Where A Paycheck Stretches The Furthest ...
by Joel Kotkin 07/09/2012. bigstock-Houston-Texas-3402570.jpg. When we think of places with high salaries, big metro areas like New York, Los Angeles or .
http://www.newgeography.com/content/002950-the-cities-where-a-paycheck-stretches-the-furthest
Still Moving to the Suburbs and Exurbs - Newgeography.com
Apr 9, 2012 . Predictably, there the usual doom and gloom reports about suburbs and . Further, Houston became the second Texas metropolitan area to .
http://www.newgeography.com/content/002766-still-moving-suburbs-and-exurbs-the-2011-census-estimates
The nicest suburbs to live in around Houston, TX - by Vicki Phipps ...
Dec 5, 2008 . Since Houston Texas is the fourth largest city in the USA, there are plenty of suburbs to live in and still be within sight of the big city life. ..., Vicki .
http://www.helium.com/items/1231290-the-nicest-suburbs-to-live-in-around-houston-texas
Houston Strategies: Atlanta vs. Houston
May 31, 2009 . Houston and Atlanta are very similar in that they're high-growth, sprawling, . Texas Med Center vs. . a downtown convention couple years back and stayed way out into the surburbs, took raiol to get into down everyday.
http://houstonstrategies.blogspot.com/2009/05/atlanta-vs-houston.html
Houston Suburbs
Houston Real Estate - Homes For Sale | Texas Realtors - Agents · Search Properties In Houston, Texas (Heights, Midtown, Memorial, River Oaks) · Houston .
http://www.noplacelikehouston.com/houston_suburbs


|
G. Gordon LiddyThe G, surprisingly, doesn't stand for "goon," "ghoul" or "gestapo." It stands for "George." However, G. Gordon Liddy's second middle name is "Battle," which has to count for something.There are two ways you can look at Liddy: He might be a curious study in grand megalomania coupled with apparently only mediocre ability. Or he could be a nefarious power-mongering secret agent whose life is filled with intrigue, secrets which could shake the nation and tales of high adventure. We'll let you guess which version of the story Liddy himself prefers. After two years in Korea, Liddy got his law degree and went to work for J. Edgar Hoover at the FBI. Liddy arrived during the glory days of Hoover's reign, while the agency was tracking down gangsters left and right, but before it started assassinating civil rights leaders. According to Liddy's own accounts (which vary considerably from day to day), his jobs at the FBI included monitoring possible candidates for internment at secret concentration camps, tracking down America's Most Wanted and raiding the home of recreational drug guru Timothy Leary in a fruitless search for something that would stand up in court (in light of the drug laws at the time). In 1962, Liddy left the FBI for a short-lived career as a lawyer, first in private practice and later as a prosecutor in New York State. He continued his weird lifelong fixation with Leary, raiding his home in the area in an attempt to nail him on drug charges. Liddy's prosecution eventually led the U.S. Supreme Court to overturn the existing drug laws of the day as unconstitutional (prompting Congress to write a whole new set of even more Draconian laws). As a minor politico in New York, Liddy naturally caught the attention of Richard M. Nixon's 1968 presidential campaign, which was looking for unpaid help, as all campaigns do. As a reward for a job well done, Liddy was brought into the Nixon administration, as a lawyer in the Treasury Department. In 1971, Liddy was promoted to the White House Staff, and that's when the trouble began. After (in his own mind) creating the Drug Enforcement Agency, he moved on to bigger and better things — a job with the White House "Special Investigations Group." Organized by Egil "Bud" Krogh, the man who brought Liddy on board, the group was informally known as "the Plumbers," because their job was to stop leaks from the executive branch. The prima facie justification for this was "national security," but the Plumbers quickly expanded their role into political security as well. Later in 1971, the Plumbers broke into the office of a psychiatrist who had been treating prominent anti-war activist Daniel Ellsberg, a former Defense Department analyst who had leaked papers dramatically undercutting public support for the Vietnam War. Liddy and E. Howard Hunt supervised the break-in. Done on a national security pretext, the actual intent was to dig up incriminating or embarrassing information to discredit Ellsberg, on specific orders from Nixon himself. Liddy left the White House to join the aptly named Committee to Re-Elect the President (CREEP) in 1972, but he remained an integral part of the Nixon administration's secret operational team. In early 1972, Liddy presented Nixon's attorney general, John Mitchell, with an action plan called "Operation Gemstone." Gemstone laid out a $1 million budget for black ops activity against the president's political enemies, including covert schemes to manipulate Howard Hughes and Aristotle Onassis and a proposal to kidnap dissidents who might protest at the Republican National Convention later that year. Mitchell nixed the plan because it cost too much, rather than because it was illegal, immoral, impractical or just plain insane. But he was impressed with Liddy's gumption, and gave the former FBI agent at least $250,000 to launch a scaled-down version of the plan, which included a break-in at the Democratic Party headquarters at the Watergate hotel. The ultraparanoid Liddy was an ideal choice for this sort of operation. When the burglars were caught, Liddy sprang into action, shredding papers and even money he had been given by the Nixon campaign, and preparing himself for the inevitable stint in prison. As the scandal slowly unfolded, Liddy was a rock. Questions of sanity and morality aside, if all of Nixon's men had been like Liddy, there would have been no Watergate. Liddy's world view is probably best explained by some of the colorful anecdotes he likes to share. At parties, Liddy was known to hold his hand over a candle flame until it burned, in order to demonstrate the merits of willpower, explaining that "the trick is not to mind the pain." Liddy was once afflicted with a fear of rats, so he caught, cooked and ate a rat, just to get over it. The White House was a bit freaked out by such stories and other evidence of Liddy's extreme fanaticism. At one point, he reputedly sent the administration a message that he would happily stand on a street corner and wait to be assassinated, if they thought that would help. Although no one took him up on this offer, Liddy never budged and never disclosed any incriminating information until long after it was all over. Eventually, he was convicted of conspiracy and served more than four years in prison, more than any other member of the Nixon administration. His 20-year sentence was eventually commuted by Jimmy Carter, more or less on the grounds that no one else was doing that kind of time, so there wasn't much point in singling Liddy out. In 1980, Liddy published his autobiography, "Will," in which he recounted stories such as the rat and Leary things, and recounting his early admiration for Hitler (a sentiment he shared with a certain governor of California), but the book failed to shed a lot of new light on his Watergate role. After a few years exploiting his notoriety for TV game show appearances and guest starring roles on programs like "Miami Vice," Liddy took the perhaps inevitable career course laid out before him, and became a syndicated radio talk show host, where he famously dished out advice to would-be nut jobs seeking to protect their constitutional rights. The most infamous of these incidents was a 1994 show in which he advised a caller worried about jack-booted ATF agents kicking in his door: "They've got a big target on there: ATF. Don't shoot at that because they've got a vest on underneath that. Head shot, head shots." He also suggested that groin shots were a good backup plan. In recent years, Liddy has said as much as he ever had about Watergate, throwing his support behind a conspiracy theory that the DNC break-in was ordered by White House Counsel John Dean, who wanted to cover up his future wife's alleged connection to a Washington, D.C., call-girl ring. Liddy's support of this theory has gotten him sued by the Democratic official whose phone was being bugged in the break-in. The case was dismissed after the jury couldn't reach a verdict. During the trial, Liddy was asked if he had ever considered killing Dean. He responded, "I wouldn't consider him worth the quarter it would cost to buy the cartridge that would propel the bullet to kill him with." Dean sued Liddy for libel, but the case was dismissed. The publisher of the book first proposing the call girl theory settled a similar suit by Dean and his wife for an unknown amount of money. In his later years, Liddy reunited with the man who had inexplicably become his friend, Timothy Leary, for a touring debate on the merits of drugs, while advancing such entrepreneurial concepts as the "Stacked and Packed" calendar, in which buxom and scantily clad women pose with firearms in order to make some kind of statement about constitutional rights, making major bucks as a lecturer and penning books on politics, such as his most recent libertarian tome, "When I Was A Kid, This Was A Free Country." Although he's now well into his 70s, you couldn't tell from looking at him. Liddy credits this suspiciously Faustian longevity to some "scientifically formulated" amino acid supplement that he shills from his Web site, dangling the prospect we could be receiving his thoughtful political insights and his helpful tips on killing federal law enforcement agents for years to come. If the prospect makes you a little uncomfortable, just remember, the trick is not to mind the pain...
Timeline
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This website is one of those newfangled
npm install
all the package ones. Therefore I must inform you that this website does not work properly if JavaScript is not enabled. ☹


|
QuantLib: a free/open-source library for quantitative finance
Fully annotated sources - version 1.30
|
Files | |
| file | abcdvol.cpp [code] |
| file | abcdvol.hpp [code] |
| file | alphafinder.cpp [code] |
| file | alphafinder.hpp [code] |
| file | alphaform.hpp [code] |
| file | alphaformconcrete.cpp [code] |
| file | alphaformconcrete.hpp [code] |
| file | capletcoterminalalphacalibration.cpp [code] |
| file | capletcoterminalalphacalibration.hpp [code] |
| file | capletcoterminalmaxhomogeneity.cpp [code] |
| file | capletcoterminalmaxhomogeneity.hpp [code] |
| file | capletcoterminalperiodic.cpp [code] |
| file | capletcoterminalperiodic.hpp [code] |
| file | capletcoterminalswaptioncalibration.cpp [code] |
| file | capletcoterminalswaptioncalibration.hpp [code] |
| file | cotswaptofwdadapter.cpp [code] |
| file | cotswaptofwdadapter.hpp [code] |
| file | ctsmmcapletcalibration.cpp [code] |
| file | ctsmmcapletcalibration.hpp [code] |
| file | flatvol.cpp [code] |
| file | flatvol.hpp [code] |
| file | fwdperiodadapter.cpp [code] |
| file | fwdperiodadapter.hpp [code] |
| file | fwdtocotswapadapter.cpp [code] |
| file | fwdtocotswapadapter.hpp [code] |
| file | piecewiseconstantabcdvariance.cpp [code] |
| file | piecewiseconstantabcdvariance.hpp [code] |
| file | piecewiseconstantvariance.cpp [code] |
| file | piecewiseconstantvariance.hpp [code] |
| file | pseudorootfacade.cpp [code] |
| file | pseudorootfacade.hpp [code] |
| file | volatilityinterpolationspecifier.hpp [code] |
| file | volatilityinterpolationspecifierabcd.cpp [code] |
| file | volatilityinterpolationspecifierabcd.hpp [code] |


Official Crime Data
Each month the Secretariado Ejecutivo del Sistema Nacional de Seguridad Pública
publishes crime information on its website. This website downloads, processes the data, and presents it in an easy to interpret format.
Kidnappings, homicides, and extortions refer to victims; car robberies to police reports.
Car robbery includes the crime of robo de coche de 4 ruedas only. Homicides include feminicides.
According to the National Crime Victimization Survey (ENVIPE) extortions have been rising, but according to the SNSP decreasing. Car Robberies
do match the ENVIPE trend, and homicides follow the trend reported by the INEGI.
INEGI homicide data tends to be more precise. Forensic coroners and the INEGI simply don't have the same incentives to lower the number of homicides that happen in Mexico as the police. In addition to adding deaths from Legal intervention, operations of war, military operations, and terrorism to the INEGI homicide count I used a statistical model to predict the intent of deaths of unknown intent similar to what I used in this post. The disadvantage of using the INEGI data is it is usually more than a year out of date.
Intuitively, you can think of the statistical model as if someone were to ask you to guess the injury intent in the death of a 70 year old Mérida woman whose cause of death was transport related. You would probably answer it was an accident. On the other hand, if you had to guess the type of death of a young adult male whose cause of death was a firearm, and the injury took place on a public street in Ciudad Juárez, you would probably guess it was a homicide.
The chart below shows INEGI homicides without any statistical adjustment since 1990


media
Media coverage of some of my projects.
- Predicting the perfect storm, October 5, 2021
- From blank canvas unfolds a scene: GAN-based model generates and modifies images based on continual linguistic instruction, October 23, 2019
- Computer, enhance please! - From topping the ESA competition on super-resolution, towards monitoring human rights and the environment from space, July 3, 2019
- Towards deep conversational recommendations, November 30, 2018
- ReDial: Recommendation dialogs for bridging the gap between chit-chat and goal-oriented chatbots, November 30, 2018
- ChatPainter: Improving text-to-image generation by using dialogue, April 23, 2018
- Deep Learning at 15 PFlops Enables Training for Extreme Weather Identification at Scale, March 19, 2018
- FigureQA: an annotated figure dataset for visual reasoning, November 17, 2017
- Learning about the world through video, June 21, 2017


The Amazon Chime SDK for JavaScript enables builders to create applications with custom and dynamic video layouts. Depending on the number of video tiles displayed on the screen, their relative display size and priority, different video upstream strategies and tile management methods are applied to provide the optimal video experience for end users.
The first section introduces basic concepts, such as video lifecycle management APIs and the uplink/downlink policies. The second section discusses several common use cases and how to implement them using the Amazon Chime SDK for JavaScript (“JavaScript SDK”) and the Amazon Chime SDK React Components Library (“React Components Library”).
Consider the following scenario: A meeting includes three attendees: attendee 0, attendee 1, and attendee 2. They are all sharing their local camera stream in a meeting, and attendee 2 is also sharing the screen via content share. The diagram below illustrates how all the video streams are received and managed from the perspective of attendee 0.
Typically, there are four steps involved in the lifecycle of a remote video with respect to a single receiving attendee:
As remote attendees change their video stream, an up-to-date list of remote video sources is provided via the remoteVideoSourcesDidChange callback.
The receiving attendee will select the remote video sources (and possibly which simulcast layer) that they wish to receive, which will initiate a negotiation (or “subscription”) with the backend servers to start forwarding the selected remote video sources, depending on the attendee’s downlink policy (explained in a later section).
Note: Some downlink policies may expose APIs to allow dynamic control over this decision, e.g., VideoPriorityBasedPolicy.
For each subscribed/unsubscribed video, the receiving attendee will receive the tileId of the updated VideoTile from videoTileDidUpdate/videoTileWasRemoved callback.
To display/remove the video, the receiving attendee can bind/unbind the updated VideoTile to/from a HTMLVideoElement in their application using the bindVideoElement(tileId)/unbindVideoElement(tileId) API.
Uplink and downlink policies help builders configure the video strategies for sending and receiving video streams in a meeting. The Amazon Chime SDK for JavaScript provides different policies, each with its own configuration and dynamic controls. Builders can choose between the provided policies or extend and create their own, depending on the requirements.
The video encoding parameters are determined by the uplink policy, which takes into consideration the number of video publishers on the call. If necessary, it may suggest encoding multiple “simulcast” layers (with different bitrates and resolutions). The JavaScript SDK currently provides two uplink policies:
In this policy, an attendee encodes and sends one video layer upstream and scales the resolution and bitrate based on the number of video publishers. This is to ensure the receiving attendees who are subscribed to these videos do not experience excessive network or compute load, which may degrade the meeting quality.
Each attendee may encode and send up to two layers of video with different bitrates and resolutions under this policy. It enables the recipient to switch between the two video layers to adapt to changing network conditions or different layouts (e.g., a featured video may desire a higher resolution than a gallery view video).
Note: The SimulcastUplinkPolicy is currently only supported in Chrome 76 and above versions.
The downlink policy controls which remote video sources are received downstream based on the network condition, local resources (e.g., CPU), and other factors such as layout changes in the application. The JavaScript SDK currently provides two downlink policies:
This policy subscribes to the highest quality video layer of all publishers. Under constrained network, some or all videos may freeze as packets are lost on the network, and they will recover automatically once network congestion is reduced.
This policy allows builders to choose and configure which remote video sources to subscribe to, their relative priorities and preferences such as, targetDisplaySize . Under constrained network, the policy will automatically pause video tiles based on the priorities you set to these remote video sources until recovery. If used with the SimulcastUplinkPolicy, the policy may temporarily degrade to lower resolutions. For videos of the same priority, the policy first tries to allocate bandwidth to ensure as many videos can be displayed as possible before upgrading to higher quality if the bandwidth allows.
Note: The VideoPriorityBasedPolicy uses webRTC's available downlink bandwidth estimate, which has not been
supported in Firefox yet, the policy should be only used in Chrome and Safari.
We recommend the default configuration of the NScaleVideoUplinkBandwidthPolicy and AllHighestVideoBandwidthPolicy when displaying a small number of video tiles of a fixed size, so the recipient is less likely to get overwhelmed. Video freezes can occur due to network congestion and recover automatically.
The videoTileDidUpdate and videoTileWasRemoved callbacks are already handled by the React Components Library. If you don’t have the content sharing functionality in your application, you can use the VideoTileGrid component with the standard layout from the React Components Library.
While the JavaScript SDK supports viewing up to 25 video tiles at this time, as the number of video publishers increases, the bandwidth and CPU consumption of receiving attendees may not be sufficient to display all videos.
The default setting of NScaleVideoUplinkBandwidthPolicy and AllHighestVideoBandwidthPolicy can result in video freezes as the number of videos goes up and more videos have to be decoded. Video packet loss and network delays are a result of high CPU consumption and can impact all streams equally. This may not be acceptable if the application wishes to preserve certain videos over others, and it can be mitigated by the application directly calling the pauseReceivingStream(streamId) API to pause certain videos. You can get the streamId via VideoTile.stateRef().streamId.
The VideoPriorityBasedPolicy is recommended as the downlink policy if you wish to proactively pause (video will not be displayed) some videos to save the bandwidth in order to preserve others. This gives the application builder more control and makes the impact on the video experience resulting from network constraints more predictable. The VideoPriorityBasedPolicy triggers tileWillBePausedByDownlinkPolicy and tileWillBeUnpausedByDownlinkPolicy callbacks if video tiles are automatically paused or unpaused so that you can properly notify the users and potentially replace the empty video tile with something like avatars to reduce the visual impact.
If you don’t have content sharing functionality in your application, you can use the VideoTileGrid component with the standard layout from React Components Library. Otherwise, you need to build a custom video grid using the components and hooks from the React Components Library. Refer to the implementation part under case 1 for details.
Create a meetingConfig object to store the configuration of MeetingProvider. This configuration is passed down to the MeetingManager and is used to initialize the MeetingSession when joining a meeting.
// Create a file named 'meetingConfig.ts'.import {
ConsoleLogger,
LogLevel,
VideoPriorityBasedPolicy,
} from'amazon-chime-sdk-js';
// Initialize `VideoPriorityBasedPolicy` and export it to use elsewhere.const logger = new ConsoleLogger('SDK', LogLevel.INFO);
exportconst priorityBasedPolicy = new VideoPriorityBasedPolicy(logger);
const meetingConfig = {
logger,
videoDownlinkBandwidthPolicy: priorityBasedPolicy,
};
exportdefault meetingConfig;
Setup the MeetingProvider using the meetingConfig.
Import the previous VideoPriorityBasedPolicy instance in your provider.
Create an observer and subscribe to the tileWillBePausedByDownlinkPolicy and tileWillBeUnpausedByDownlinkPolicy callbacks, so you can update the UI to notify the user that the related video tile has been paused or unpaused.
Create an observer and subscribe to the remoteVideoSourcesDidChange callback, so you can track the states of remote video sources for future subscriptions. You need a variable like roster: any = {} to keep track of which attendees in the meeting are publishing videos. Check use case 24 for more details.
Note: You may want to keep the content sharing in your roster, depending on your needs.
import { useAudioVideo } from'amazon-chime-sdk-component-library-react';
import { priorityBasedPolicy } from'./meetingConfig';
const GridStateProvider: React.FC = ({ children }) => {
const audioVideo = useAudioVideo();
// Subscribe to `tileWillBePausedByDownlinkPolicy` and// `tileWillBeUnpausedByDownlinkPolicy` callbacks.
useEffect(() => {
if (!priorityBasedPolicy || !audioVideo) {
return;
}
const observer: VideoDownlinkObserver = {
tileWillBePausedByDownlinkPolicy: (tileId: number): void => {
const attendeeId = audioVideo.getVideoTile(tileId)?.state().boundAttendeeId;
if (attendeeId) {
// Update the UI to notify user the pause of// video tile according to below property.
roster[attendeeId].paused = true;
}
},
tileWillBeUnpausedByDownlinkPolicy: (tileId: number): void => {
const attendeeId = audioVideo.getVideoTile(tileId)?.state().boundAttendeeId;
if (attendeeId) {
// Update the UI to notify user the unpause// of video tile according to below property.
roster[attendeeId].paused = false;
}
},
};
priorityBasedPolicy.addObserver(observer);
return (): void => priorityBasedPolicy.removeObserver(observer);
}, [audioVideo]);
// Subscribe to `remoteVideoSourcesDidChange` callback.
useEffect(() => {
if (!audioVideo) {
return;
}
const observer: AudioVideoObserver = {
remoteVideoSourcesDidChange: (videoSources: VideoSource[]): void => {
// Update your `roster` object to track the remote video sources state.for (const attendeeId in roster) {
roster[attendeeId].hasVideo = false;
}
for (const source of videoSources) {
const attendeeId = source.attendee.attendeeId;
roster[attendeeId].hasVideo = true;
}
},
};
audioVideo.addObserver(observer);
return (): void => audioVideo.removeObserver(observer);
}, [audioVideo]);
return (
<GridStateContext.Providervalue={value} >
{ children }
</GridStateContext.Provider>
);
};
VideoPreference(attendeeId, priority, targetSize?)
// `attendeeId: string`: Attendee ID of the video source.// `priority: number`: The relative priority of this video source against others.// `targetSize?: TargetDisplaySize`: The desired maximum simulcast layers to receive.
Note: The targetSize doesn't work in this example, since NScaleVideoUplinkBandwidthPolicy only publishes one layer.
// In this example, only render up to ten remote video sources.const updateVideoPreferences = () => {
// Initialize `VideoPreferences`.const videoPreferences = VideoPreferences.prepare();
let numVideos = 0;
for (const attendeeId in roster) {
if (roster[attendeeId].hasVideo && numVideos < 10) {
// Subscribe to the first ten remote video sources// and set highest priority for them.
videoPreferences.add(
new VideoPreference(attendeeId, 1, TargetDisplaySize.High)
);
numVideos += 1;
}
// The remaining remote video sources are not subscribed,// so they do not cost bandwidth.
}
priorityBasedDownlinkPolicy.chooseRemoteVideoSources(
videoPreferences.build()
);
};
The featured layout is designed to focus on important video sources such as an active speaker or content share. The featured tile displays a video source in a large area while other video sources (up to 25 video tiles) are displayed as smaller tiles.
For layouts where all users feature the same content source or active speaker, the NScaleVideoUplinkBandwidthPolicy and VideoPriorityBasedPolicy are recommended. The NScaleVideoUplinkBandwidthPolicy automatically prioritizes the content share and boosts the resolution of the active speaker video. The VideoPriorityBasedPolicy ensures the bandwidth is efficiently used to display only the video in the featured tile.
Note: Ensure that you’re listening to changes in active speakers and passing them to the VideoPriorityBasedPolicy.
Setup the VideoPriorityBasedPolicy, as described in case 2.
Listen to the changes in active speakers and track their states.
import { DefaultActiveSpeakerPolicy } from'amazon-chime-sdk-js';
const activeSpeakerCallback = (attendeeIds: string[]): void => {
// Reset `active` propertyfor (const attendeeId in roster) {
roster[attendeeId].active = false;
}
// Set `active` to true for the most active speaker.// The `attendeeIds` returned by the `activeSpeakerCallback`// are sorted by the most activefor (const attendeeId of attendeeIds) {
if (roster[attendeeId]) {
roster[attendeeId].active = true;
break;
}
}
// Update video preferences whenever there are changes of active speakers.
updateVideoPreferences();
};
meetingSession.audioVideo.subscribeToActiveSpeakerDetector(
new DefaultActiveSpeakerPolicy(),
activeSpeakerCallback
);
Update video preferences whenever there are changes to active speakers.
// Video source priority in this example:// Content share > active speakers > othersconst updateVideoPreferences = () => {
// Initialize `VideoPreferences`.const videoPreferences = VideoPreferences.prepare();
for (const attendeeId in roster) {
if (roster[attendeeId].hasVideo) {
if (
new DefaultModality(attendeeId).hasModality(
DefaultModality.MODALITY_CONTENT
)
) {
// Prioritize content share.
videoPreferences.add(
new VideoPreference(attendeeId, 1, TargetDisplaySize.High)
);
} elseif (roster[attendeeId].active) {
// Prioritize active speakers.
videoPreferences.add(
new VideoPreference(attendeeId, 2, TargetDisplaySize.High)
);
} else {
// Handle the rest of video sources.
videoPreferences.add(
new VideoPreference(attendeeId, 3, TargetDisplaySize.Low)
);
}
}
}
priorityBasedDownlinkPolicy.chooseRemoteVideoSources(
videoPreferences.build()
);
};
You can use the VideoTileGrid component from the React Components Library. The featured layout is used by default.
Note: The featured layout VideoTileGrid component displays either the content sharing video or the active speaker video in the featured tile. If both are present, the content sharing video is displayed. If neither is present, there is no featured tile and all video tiles are of fixed and equal size, like in the gallery layout.
Then create a provider to handle the VideoPriorityBasedPolicy and video preferences update logic.
Setup VideoPriorityBasedPolicy, as described in the case 2.
Listen to the changes in active speakers and track their states.
The React Components Library provides the useActiveSpeakersState hook that returns a list of attendee IDs of the active speaker. Use this hook directly.
import { useAudioVideo, useActiveSpeakersState } from'amazon-chime-sdk-component-library-react';
import { priorityBasedPolicy } from'./meetingConfig';
const GridStateProvider: React.FC = ({ children }) => {
const audioVideo = useAudioVideo();
const activeSpeakers = useActiveSpeakersState();
// Set up observers and subscribe to callbacks.// ...
useEffect(() => {
// Reset `active` propertyfor (const attendeeId in roster) {
roster[attendeeId].active = false;
}
// Set `active` to true for the most active speaker.// The `activeSpeakers` returned by the `useActiveSpeakersState`// hook are sorted by the most active.for (const attendeeId of activeSpeakers) {
if (roster[attendeeId]) {
roster[attendeeId].active = true;
break;
}
}
// Update video preferences whenever there are changes of active speakers.
updateVideoPreferences();
}, [activeSpeakers]);
return (
<GridStateContext.Providervalue= {value } >
{ children }
</GridStateContext.Provider>
);
};
Update video preferences whenever there are changes to active speakers, as described in the above JavaScript SDK Implementation.
For layouts where different users feature different videos, the SimulcastUplinkPolicy and VideoPriorityBasedPolicy are recommended. The SimulcastUplinkPolicy sends multiple resolutions of the same video to the Chime servers. The TargetDisplaySize property can be specified according to the layout for each user in the VideoPriorityBasedPolicy, which allows for featured video to be rendered in high quality and the other videos are efficiently rendered according to display size.
Managing Video Quality for Different Video Layouts
Overview
The Amazon Chime SDK for JavaScript enables builders to create applications with custom and dynamic video layouts. Depending on the number of video tiles displayed on the screen, their relative display size and priority, different video upstream strategies and tile management methods are applied to provide the optimal video experience for end users.
The first section introduces basic concepts, such as video lifecycle management APIs and the uplink/downlink policies. The second section discusses several common use cases and how to implement them using the Amazon Chime SDK for JavaScript (“JavaScript SDK”) and the Amazon Chime SDK React Components Library (“React Components Library”).
Introduction
Video Lifecycle Management APIs
Consider the following scenario: A meeting includes three attendees: attendee 0, attendee 1, and attendee 2. They are all sharing their local camera stream in a meeting, and attendee 2 is also sharing the screen via content share. The diagram below illustrates how all the video streams are received and managed from the perspective of attendee 0.
Typically, there are four steps involved in the lifecycle of a remote video with respect to a single receiving attendee:
As remote attendees change their video stream, an up-to-date list of remote video sources is provided via the
remoteVideoSourcesDidChange
callback.The receiving attendee will select the remote video sources (and possibly which simulcast layer) that they wish to receive, which will initiate a negotiation (or “subscription”) with the backend servers to start forwarding the selected remote video sources, depending on the attendee’s downlink policy (explained in a later section).
VideoPriorityBasedPolicy
.For each subscribed/unsubscribed video, the receiving attendee will receive the
tileId
of the updatedVideoTile
fromvideoTileDidUpdate
/videoTileWasRemoved
callback.To display/remove the video, the receiving attendee can bind/unbind the updated
VideoTile
to/from aHTMLVideoElement
in their application using thebindVideoElement(tileId)
/unbindVideoElement(tileId)
API.Video Uplink and Downlink Policies
Uplink and downlink policies help builders configure the video strategies for sending and receiving video streams in a meeting. The Amazon Chime SDK for JavaScript provides different policies, each with its own configuration and dynamic controls. Builders can choose between the provided policies or extend and create their own, depending on the requirements.
Uplink Policy
The video encoding parameters are determined by the uplink policy, which takes into consideration the number of video publishers on the call. If necessary, it may suggest encoding multiple “simulcast” layers (with different bitrates and resolutions). The JavaScript SDK currently provides two uplink policies:
NScaleVideoUplinkBandwidthPolicy (Default)
In this policy, an attendee encodes and sends one video layer upstream and scales the resolution and bitrate based on the number of video publishers. This is to ensure the receiving attendees who are subscribed to these videos do not experience excessive network or compute load, which may degrade the meeting quality.
SimulcastUplinkPolicy
Each attendee may encode and send up to two layers of video with different bitrates and resolutions under this policy. It enables the recipient to switch between the two video layers to adapt to changing network conditions or different layouts (e.g., a featured video may desire a higher resolution than a gallery view video).
SimulcastUplinkPolicy
is currently only supported in Chrome 76 and above versions.Downlink Policy
The downlink policy controls which remote video sources are received downstream based on the network condition, local resources (e.g., CPU), and other factors such as layout changes in the application. The JavaScript SDK currently provides two downlink policies:
AllHighestVideoBandwidthPolicy (Default)
This policy subscribes to the highest quality video layer of all publishers. Under constrained network, some or all videos may freeze as packets are lost on the network, and they will recover automatically once network congestion is reduced.
VideoPriorityBasedPolicy
This policy allows builders to choose and configure which remote video sources to subscribe to, their relative priorities and preferences such as,
targetDisplaySize
. Under constrained network, the policy will automatically pause video tiles based on the priorities you set to these remote video sources until recovery. If used with theSimulcastUplinkPolicy
, the policy may temporarily degrade to lower resolutions. For videos of the same priority, the policy first tries to allocate bandwidth to ensure as many videos can be displayed as possible before upgrading to higher quality if the bandwidth allows.VideoPriorityBasedPolicy
uses webRTC's available downlink bandwidth estimate, which has not been supported in Firefox yet, the policy should be only used in Chrome and Safari.Recommendations for Common Layouts
Case 1: Small Grid Layout (up to 4 Videos) with Fixed Tile Size
We recommend the default configuration of the
NScaleVideoUplinkBandwidthPolicy
andAllHighestVideoBandwidthPolicy
when displaying a small number of video tiles of a fixed size, so the recipient is less likely to get overwhelmed. Video freezes can occur due to network congestion and recover automatically.JavaScript SDK Implementation
Refer to code sample in Use case 16.
React Components Library Implementation
The
videoTileDidUpdate
andvideoTileWasRemoved
callbacks are already handled by the React Components Library. If you don’t have the content sharing functionality in your application, you can use theVideoTileGrid
component with thestandard
layout from the React Components Library.import { MeetingProvider, VideoTileGrid } from 'amazon-chime-sdk-component-library-react'; const App = () => ( <MeetingProvider> <VideoTileGrid layout="standard"/> </MeetingProvider> );
Otherwise, you need to build a custom video grid using the components and hooks from the React Components Library.
import { LocalVideo, RemoteVideos, useLocalVideo, useRemoteVideoTileState, VideoGrid, } from 'amazon-chime-sdk-component-library-react'; const fluidStyles = ` height: 100%; width: 100%; `; const staticStyles = ` display: flex; position: absolute; bottom: 1rem; right: 1rem; width: 20vw; max-height: 30vh; height: auto; video { position: static; } `; export const GalleryVideoTileGrid: React.FC = () => { const { tiles } = useRemoteVideoTileState(); const { isVideoEnabled } = useLocalVideo(); const gridSize = isVideoEnabled ? tiles.length + 1 : tiles.length; return ( <VideoGrid size={gridSize} layout='standard'> <RemoteVideos /> <LocalVideo nameplate="Me" css={gridSize > 1 ? fluidStyles : staticStyles} /> </VideoGrid> ); }; export default GalleryVideoTileGrid;
Case 2: Gallery Layout (up to 25 Videos) with Fixed Tile Size
While the JavaScript SDK supports viewing up to 25 video tiles at this time, as the number of video publishers increases, the bandwidth and CPU consumption of receiving attendees may not be sufficient to display all videos.
The default setting of
NScaleVideoUplinkBandwidthPolicy
andAllHighestVideoBandwidthPolicy
can result in video freezes as the number of videos goes up and more videos have to be decoded. Video packet loss and network delays are a result of high CPU consumption and can impact all streams equally. This may not be acceptable if the application wishes to preserve certain videos over others, and it can be mitigated by the application directly calling thepauseReceivingStream(streamId)
API to pause certain videos. You can get thestreamId
viaVideoTile.stateRef().streamId
.The
VideoPriorityBasedPolicy
is recommended as the downlink policy if you wish to proactively pause (video will not be displayed) some videos to save the bandwidth in order to preserve others. This gives the application builder more control and makes the impact on the video experience resulting from network constraints more predictable. TheVideoPriorityBasedPolicy
triggerstileWillBePausedByDownlinkPolicy
andtileWillBeUnpausedByDownlinkPolicy
callbacks if video tiles are automatically paused or unpaused so that you can properly notify the users and potentially replace the empty video tile with something like avatars to reduce the visual impact.JavaScript SDK Implementation
Refer to code sample in User Guide for PriorityBased Downlink Policy and use case 24.
React Components Library Implementation
If you don’t have content sharing functionality in your application, you can use the
VideoTileGrid
component with thestandard
layout from React Components Library. Otherwise, you need to build a custom video grid using the components and hooks from the React Components Library. Refer to the implementation part under case 1 for details.Create a
meetingConfig
object to store the configuration ofMeetingProvider
. This configuration is passed down to theMeetingManager
and is used to initialize theMeetingSession
when joining a meeting.// Create a file named 'meetingConfig.ts'. import { ConsoleLogger, LogLevel, VideoPriorityBasedPolicy, } from 'amazon-chime-sdk-js'; // Initialize `VideoPriorityBasedPolicy` and export it to use elsewhere. const logger = new ConsoleLogger('SDK', LogLevel.INFO); export const priorityBasedPolicy = new VideoPriorityBasedPolicy(logger); const meetingConfig = { logger, videoDownlinkBandwidthPolicy: priorityBasedPolicy, }; export default meetingConfig;
Setup the
MeetingProvider
using themeetingConfig
.import { MeetingProvider } from 'amazon-chime-sdk-component-library-react'; import meetingConfig from './meetingConfig'; const App = () => ( <MeetingProvider {...meetingConfig}> <MyApp /> </MeetingProvider> );
Create a
Context Provider
to usepriorityBasedDownlinkPolicy
.Import the previous
VideoPriorityBasedPolicy
instance in your provider.Create an observer and subscribe to the
tileWillBePausedByDownlinkPolicy
andtileWillBeUnpausedByDownlinkPolicy
callbacks, so you can update the UI to notify the user that the related video tile has been paused or unpaused.Create an observer and subscribe to the
remoteVideoSourcesDidChange
callback, so you can track the states of remote video sources for future subscriptions. You need a variable likeroster: any = {}
to keep track of which attendees in the meeting are publishing videos. Check use case 24 for more details.roster
, depending on your needs.import { useAudioVideo } from 'amazon-chime-sdk-component-library-react'; import { priorityBasedPolicy } from './meetingConfig'; const GridStateProvider: React.FC = ({ children }) => { const audioVideo = useAudioVideo(); // Subscribe to `tileWillBePausedByDownlinkPolicy` and // `tileWillBeUnpausedByDownlinkPolicy` callbacks. useEffect(() => { if (!priorityBasedPolicy || !audioVideo) { return; } const observer: VideoDownlinkObserver = { tileWillBePausedByDownlinkPolicy: (tileId: number): void => { const attendeeId = audioVideo.getVideoTile(tileId)?.state().boundAttendeeId; if (attendeeId) { // Update the UI to notify user the pause of // video tile according to below property. roster[attendeeId].paused = true; } }, tileWillBeUnpausedByDownlinkPolicy: (tileId: number): void => { const attendeeId = audioVideo.getVideoTile(tileId)?.state().boundAttendeeId; if (attendeeId) { // Update the UI to notify user the unpause // of video tile according to below property. roster[attendeeId].paused = false; } }, }; priorityBasedPolicy.addObserver(observer); return (): void => priorityBasedPolicy.removeObserver(observer); }, [audioVideo]); // Subscribe to `remoteVideoSourcesDidChange` callback. useEffect(() => { if (!audioVideo) { return; } const observer: AudioVideoObserver = { remoteVideoSourcesDidChange: (videoSources: VideoSource[]): void => { // Update your `roster` object to track the remote video sources state. for (const attendeeId in roster) { roster[attendeeId].hasVideo = false; } for (const source of videoSources) { const attendeeId = source.attendee.attendeeId; roster[attendeeId].hasVideo = true; } }, }; audioVideo.addObserver(observer); return (): void => audioVideo.removeObserver(observer); }, [audioVideo]); return ( <GridStateContext.Provider value={value} > { children } </GridStateContext.Provider> ); };
Call the
chooseRemoteVideoSources(sources: VideoPreference[])
API to set which remote video sources to receive and their related preferences (VideoPreference
).VideoPreference(attendeeId, priority, targetSize?) // `attendeeId: string`: Attendee ID of the video source. // `priority: number`: The relative priority of this video source against others. // `targetSize?: TargetDisplaySize`: The desired maximum simulcast layers to receive.
targetSize
doesn't work in this example, sinceNScaleVideoUplinkBandwidthPolicy
only publishes one layer.// In this example, only render up to ten remote video sources. const updateVideoPreferences = () => { // Initialize `VideoPreferences`. const videoPreferences = VideoPreferences.prepare(); let numVideos = 0; for (const attendeeId in roster) { if (roster[attendeeId].hasVideo && numVideos < 10) { // Subscribe to the first ten remote video sources // and set highest priority for them. videoPreferences.add( new VideoPreference(attendeeId, 1, TargetDisplaySize.High) ); numVideos += 1; } // The remaining remote video sources are not subscribed, // so they do not cost bandwidth. } priorityBasedDownlinkPolicy.chooseRemoteVideoSources( videoPreferences.build() ); };
Case 3: Featured Layout
The featured layout is designed to focus on important video sources such as an active speaker or content share. The featured tile displays a video source in a large area while other video sources (up to 25 video tiles) are displayed as smaller tiles.
For layouts where all users feature the same content source or active speaker, the
NScaleVideoUplinkBandwidthPolicy
andVideoPriorityBasedPolicy
are recommended. TheNScaleVideoUplinkBandwidthPolicy
automatically prioritizes the content share and boosts the resolution of the active speaker video. TheVideoPriorityBasedPolicy
ensures the bandwidth is efficiently used to display only the video in the featured tile.VideoPriorityBasedPolicy
.JavaScript SDK Implementation
Setup the
VideoPriorityBasedPolicy
, as described in case 2.Listen to the changes in active speakers and track their states.
import { DefaultActiveSpeakerPolicy } from 'amazon-chime-sdk-js'; const activeSpeakerCallback = (attendeeIds: string[]): void => { // Reset `active` property for (const attendeeId in roster) { roster[attendeeId].active = false; } // Set `active` to true for the most active speaker. // The `attendeeIds` returned by the `activeSpeakerCallback` // are sorted by the most active for (const attendeeId of attendeeIds) { if (roster[attendeeId]) { roster[attendeeId].active = true; break; } } // Update video preferences whenever there are changes of active speakers. updateVideoPreferences(); }; meetingSession.audioVideo.subscribeToActiveSpeakerDetector( new DefaultActiveSpeakerPolicy(), activeSpeakerCallback );
Update video preferences whenever there are changes to active speakers.
// Video source priority in this example: // Content share > active speakers > others const updateVideoPreferences = () => { // Initialize `VideoPreferences`. const videoPreferences = VideoPreferences.prepare(); for (const attendeeId in roster) { if (roster[attendeeId].hasVideo) { if ( new DefaultModality(attendeeId).hasModality( DefaultModality.MODALITY_CONTENT ) ) { // Prioritize content share. videoPreferences.add( new VideoPreference(attendeeId, 1, TargetDisplaySize.High) ); } else if (roster[attendeeId].active) { // Prioritize active speakers. videoPreferences.add( new VideoPreference(attendeeId, 2, TargetDisplaySize.High) ); } else { // Handle the rest of video sources. videoPreferences.add( new VideoPreference(attendeeId, 3, TargetDisplaySize.Low) ); } } } priorityBasedDownlinkPolicy.chooseRemoteVideoSources( videoPreferences.build() ); };
React Components Library Implementation
You can use the
VideoTileGrid
component from the React Components Library. Thefeatured
layout is used by default.featured
layoutVideoTileGrid
component displays either the content sharing video or the active speaker video in the featured tile. If both are present, the content sharing video is displayed. If neither is present, there is no featured tile and all video tiles are of fixed and equal size, like in the gallery layout.import { MeetingProvider, VideoTileGrid } from 'amazon-chime-sdk-component-library-react'; const App = () => ( <MeetingProvider> <VideoTileGrid /> </MeetingProvider> );
Then create a provider to handle the
VideoPriorityBasedPolicy
and video preferences update logic.Setup
VideoPriorityBasedPolicy
, as described in the case 2.Listen to the changes in active speakers and track their states.
useActiveSpeakersState
hook that returns a list of attendee IDs of the active speaker. Use this hook directly.import { useAudioVideo, useActiveSpeakersState } from 'amazon-chime-sdk-component-library-react'; import { priorityBasedPolicy } from './meetingConfig'; const GridStateProvider: React.FC = ({ children }) => { const audioVideo = useAudioVideo(); const activeSpeakers = useActiveSpeakersState(); // Set up observers and subscribe to callbacks. // ... useEffect(() => { // Reset `active` property for (const attendeeId in roster) { roster[attendeeId].active = false; } // Set `active` to true for the most active speaker. // The `activeSpeakers` returned by the `useActiveSpeakersState` // hook are sorted by the most active. for (const attendeeId of activeSpeakers) { if (roster[attendeeId]) { roster[attendeeId].active = true; break; } } // Update video preferences whenever there are changes of active speakers. updateVideoPreferences(); }, [activeSpeakers]); return ( <GridStateContext.Provider value= { value } > { children } </GridStateContext.Provider> ); };
Update video preferences whenever there are changes to active speakers, as described in the above JavaScript SDK Implementation.
For layouts where different users feature different videos, the
SimulcastUplinkPolicy
andVideoPriorityBasedPolicy
are recommended. TheSimulcastUplinkPolicy
sends multiple resolutions of the same video to the Chime servers. TheTargetDisplaySize
property can be specified according to the layout for each user in theVideoPriorityBasedPolicy
, which allows for featured video to be rendered in high quality and the other videos are efficiently rendered according to display size.JavaScript SDK Implementation
Setup
VideoPriorityBasedPolicy
, as described in case 2.Enable the below feature flags in the
MeetingSessionConfiguration
to useSimulcastUplinkPolicy
. Refer to the code sample in the User Guide for Simulcast for details.configuration.enableUnifiedPlanForChromiumBasedBrowsers = true; configuration.enableSimulcastForUnifiedPlanChromiumBasedBrowser = true;
Update the video preferences whenever users feature or unfeature a video.
const featureVideo = (attendeeId: string) => { roster[attendeeId].featured = true; updateVideoPreferences(); }; const unfeatureVideo = (attendeeId: string) => { roster[attendeeId].featured = false; updateVideoPreferences(); }; const updateVideoPreferences = () => { // Initialize `VideoPreferences`. const videoPreferences = VideoPreferences.prepare(); for (const attendeeId in roster) { if (roster[attendeeId].hasVideo) { if (roster[attendeeId].featured) { // Prioritize featured video sources. videoPreferences.add( new VideoPreference(attendeeId, 1, TargetDisplaySize.High) ); } else { // Handle the rest of video sources. videoPreferences.add( new VideoPreference(attendeeId, 2, TargetDisplaySize.Low) ); } } } priorityBasedDownlinkPolicy.chooseRemoteVideoSources( videoPreferences.build() ); };
React Components Library Implementation
Setup
VideoPriorityBasedPolicy
, as described in case 2.Update the
meetingConfig
object to useSimulcastUplinkPolicy
.// In 'meetingConfig.ts' file. import { ConsoleLogger, LogLevel, VideoPriorityBasedPolicy, } from 'amazon-chime-sdk-js'; const logger = new ConsoleLogger('SDK', LogLevel.INFO); export const priorityBasedPolicy = new VideoPriorityBasedPolicy(logger); const meetingConfig = { // Add this line to use `SimulcastUplinkPolicy`. simulcastEnabled: true, logger, videoDownlinkBandwidthPolicy: priorityBasedPolicy, }; export default meetingConfig;
Setup the
MeetingProvider
using themeetingConfig
.import { MeetingProvider } from 'amazon-chime-sdk-component-library-react'; import meetingConfig from './meetingConfig'; const App = () => ( <MeetingProvider {...meetingConfig}> <MyApp /> </MeetingProvider> );
Update the video preferences whenever users feature a video, as described in the above JavaScript SDK Implementation.
Give feedback on this guide


(hint- for all of the answers, it is only one, lowercase word/letter.)
Which letter of the alphabet contains the most water?
 What am I?
I’m tall when I’m young and I’m short when I’m old. What am I?


Setup Instructions for the Google API Client Library for Java
Browse Online
Checkout Instructions
Prerequisites: install Java 6, Mercurial and Maven. You may need to set
your JAVA_HOME
.
git clone https://github.com/google/google-http-java-client.git
cd google-api-java-client
mvn install
There are a few named branches:
Setup Project in Eclipse 3.5
Prerequisites: install Eclipse,
the Mercurial plugin, the Maven
plugin, and the Android
plugin.
- Setup Eclipse Preferences
- Window > Preferences... (or on Mac, Eclipse > Preferences...)
- Select Maven
- check on "Download Artifact Sources"
- check on "Download Artifact JavaDoc"
- Select Android
- Import projects
- File > Import...
- Select "General > Existing Project into Workspace" and click
"Next"
- Click "Browse" next to "Select root directory", find
[someDirectory]/google-api-java-client
and click OK
- Click "Next" and "Finish"


{% extends "base-topmenu.html" %} {% load force_extras %} {% block leadtitle %}Catami Apps{% endblock %} {% block content %}
CATAMI is bringing together Australia's marine imagery and marine researchers
Welcome back to Catami, {{ user.username }}.
Here's
your stuff ...
Welcome to Catami, you might be be new here.
If you'd like to make an account ...
Why should I make an account?
If you already have an account, login ...
Forgot your account details?


Human Rights?
Animals?
Recycle?
Youth?
Community?
Technology?
Crisis Support?
Food insecurity?
Sustainability?
Faith-based?
Health?
Homelessness?
Hunger?
Immigrants and refugees?
International?
Law?
LGBT?
People with Disabilities?
Politics?
Race and Ethnicity?
Mental Health?
Sports?
Obesity?
Women's Rights?
Oil Spills?


AdventureMaker
AdventureMaker allows you to write adventures for Dungeon & Dragons 5th edition using a simple markup system, and then quickly produces finished PDF files containing all the monster stat blocks, XP charts, treasure tables, and other technical details. AdventureMaker worries about the formatting so you can concentrate on the creative work of writing the adventure. It will even produce the Fantasy Grounds MOD file for you.
The easiest way to use AdventureMaker is to install the Sublime 3 Text editor, and then install the AdventureMaker integration bundle for your system.
Windows Installation
- Download and install Sublime Text.
- Download AdventureMaker for Windows.
- Unpack the archive.
- Double click on setup (may appear as setup.bat)
Mac Installation
- Download and install Sublime Text.
- Download AdventureMaker for Mac.
- Find advmaker.pkg in your download directory, right click on it and select Open With. Select Installer and install the package.
Checking Your Installation
- Download and unpack the quickstart bundle.
- Rename the resulting folder from Quickstart to your own project name.
- Start Sublime Text and open the file adventure.adv in your new project directory.
- From the menu, select Tools | Build System | AdvMaker.
- Press CTRL+B (CMD+B on the Mac) to turn the example/tutorial into a finished adventure.
- If everything is working you will get a new folder called finished in your project folder. Open the adventure.pdf file to see the results.
Your First Adventure
The easiest way to get started writing adventures with AdventureMaker is to download and unpack the QuickStart adventure project bundle. This provides a working example that demonstrates the use of AdventureMaker's major features. The text of the adventure explains how many of these features work, and you can immediately submit the quick start project to AdventureMaker to see how the software turns what you write into a finished adventure.
Open the adventure.adv file found in the quick start bundle with Sublime. Then, select Tools | Build System | AdvMaker to set Sublime to use AdvMaker as the build system. Hit CTRL+B (CMD+B on the Mac) to send your adventure to AdventureMaker. After a few minutes, it will return the results and you can find the finished adventure.pdf file in the new finished sub-directory.


nips nips2003 nips2003-119 nips2003-119-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: Zhou Wang, Eero P. Simoncelli
Abstract: unkown-abstract
[1] Y. Tadmor and D. J. Tolhurst, “Discrimination of changes in the second-order statistics of natural and synthetic images,” Vis Res, vol. 34, no. 4, pp. 541–554, 1994.
[2] M. A. Webster, M. A. Georgeson, and S. M. Webster, “Neural adjustments to image blur,” Nature Neuroscience, vol. 5, no. 9, pp. 839–840, 2002.
[3] E. R. Kretzmer, “The statistics of television signals,” Bell System Tech. J., vol. 31, pp. 751–763, 1952.
[4] D. J. Field, “Relations between the statistics of natural images and the response properties of cortical cells,” J. Opt. Soc. America, vol. 4, pp. 2379–2394, 1987.
[5] D. L. Ruderman, “The statistics of natural images,” Network: Computation in Neural Systems, vol. 5, pp. 517–548, 1996.
[6] N. Wiener, Nonlinear Problems in Random Theory. New York: John Wiley and Sons, 1958.
[7] D. J. Field and N. Brady, “Visual sensitivity, blur and the sources of variability in the amplitude spectra of natural scenes,” Vis Res, vol. 37, no. 23, pp. 3367–3383, 1997.
[8] E. P. Simoncelli, “Statistical models for images: Compression, restoration and synthesis,” in Proc 31st Asilomar Conf on Signals, Systems and Computers, (Paciﬁc Grove, CA), pp. 673–678, Nov 1997.
[9] E. H. Adelson and J. R. Bergen, “Spatiotemporal energy models for the perception of motion,” J Optical Society, vol. 2, pp. 284–299, Feb 1985.
[10] J. R. Bergen and E. H. Adelson, “Early vision and texture perception,” Nature, vol. 333, pp. 363–364, 1988.
[11] M. C. Morrone and R. A. Owens, “Feature detection from local energy,” Pattern Recognition Letters, vol. 6, pp. 303–313, 1987.
[12] N. Graham, Visual pattern analyzers. New York: Oxford University Press, 1989.
[13] P. Perona and J. Malik, “Detecting and localizing edges composed of steps, peaks and roofs,” in Proc. 3rd Int’l Conf Comp Vision, (Osaka), pp. 52–57, 1990.
[14] A. V. Oppenheim and J. S. Lim, “The importance of phase in signals,” Proc. of the IEEE, vol. 69, pp. 529–541, 1981.
[15] M. G. A. Thomson, “Visual coding and the phase structure of natural scenes,” Network: Comput. Neural Syst., no. 10, pp. 123–132, 1999.
[16] M. C. Morrone and D. C. Burr, “Feature detection in human vision: A phasedependent energy model,” Proc. R. Soc. Lond. B, vol. 235, pp. 221–245, 1988.
[17] P. Kovesi, “Phase congruency: A low-level image invariant,” Psych. Research, vol. 64, pp. 136–148, 2000.
[18] S. Venkatesh and R. A. Owens, “An energy feature detection scheme,” Int’l Conf on Image Processing, pp. 553–557, 1989.
[19] D. J. Fleet and A. D. Jepson, “Computation of component image velocity from local phase information,” Int’l J Computer Vision, no. 5, pp. 77–104, 1990.
[20] D. J. Fleet, “Phase-based disparity measurement,” CVGIP: Image Understanding, no. 53, pp. 198–210, 1991.
[21] J. Portilla and E. P. Simoncelli, “A parametric texture model based on joint statistics of complex wavelet coefﬁcients,” Int’l J Computer Vision, vol. 40, pp. 49–71, 2000.
[22] J. Daugman, “Statistical richness of visual phase information: update on recognizing persons by iris patterns,” Int’l J Computer Vision, no. 45, pp. 25–38, 2001.
[23] E. P. Simoncelli, W. T. Freeman, E. H. Adelson, and D. J. Heeger, “Shiftable multiscale transforms,” IEEE Trans Information Theory, vol. 38, pp. 587–607, Mar 1992.
[24] D. A. Pollen and S. F. Ronner, “Phase relationships between adjacent simple cells in the cat,” Science, no. 212, pp. 1409–1411, 1981.
[25] D. J. Heeger, “Half-squaring in responses of cat striate cells,” Visual Neuroscience, no. 9, pp. 427–443, 1992.
[26] D. J. Heeger, “Normalization of cell responses in cat striate cortex,” Visual Neuroscience, no. 9, pp. 181–197, 1992.
[27] O. Schwartz and E. P. Simoncelli, “Natural signal statistics and sensory gain control,” Nature Neuroscience, no. 4, pp. 819–825, 2001.
[28] D. L. Ruderman and W. Bialek, “Seeing beyond the Nyquist limit,” Neural Comp., no. 4, pp. 682–690, 1992.
[29] G. Westheimer and S. P. McKee, “Spatial conﬁgurations for visual hyperacuity,” Vison Res., no. 17, pp. 941–947, 1977.
[30] W. S. Geisler, “Physical limits of acuity and hyperacuity,” J. Opti. Soc. America, no. 1, pp. 775–782, 1984.


Bugatti EB110
The Bugatti EB110 SS is pictured above in both images.
Specs(Regular/SS)
Price |
$456,000 / $537,600 |
Top Speed |
212mph / 221mph |
Acceleration |
|
Engine |
|
0-30mph |
N/A |
Type |
Quad Turbo V12, 60valve Quad cam / same |
0-60mph |
3.5sec / N/A |
Displacement |
3.5L(3500cc) / same |
0-100 |
N/A |
Power |
552hp@8000rpm / 611hp@? |
1/4 mile |
11.7sec/?mph / N/A |
Torque |
450 lbs-ft@3750rpm / 477 lbs-ft@? |
Weight |
3,571 lbs / 3,130 lbs |
Handling |
|
Gas mileage |
18mpg / N/A |
Skidpad |
N/A |
City |
N/A |
600ft slalom |
N/A |
Highway |
N/A |
Powertrain |
Mid-engined, 4 wheel drive, 6 speed manual / Same |
(? = incomplete data or unverified info, N/A = info Not Available)
Beyond the specs:
A true Italian masterpiece this car offers you light steering, excellent high-speed stability, and an amazing high revving V12, which gets an amazing 174+hp per liter (for the SS). As you can imagine, the result is a car that influences spirited driving (very spirited). While the quad turbos have a bit of lag the torque comes at a very low 3,750rpm even though its horse power comes at a very high 8,000rpm just 200rpm below the redline. This is the only explanation of how a car with 6.5 lbs./hp can challenge a Jaguar XJ220 with a much lighter 6 lbs./hp. Combining this performance with its relatively low price tag, (the Mclaren F1 cost a lot more) this car is a great deal, especially since unlike its competitors it comes with 4 wheel drive and the interior was not stripped bare. Its 4 wheel drive system deliver 27% of the power to the front wheels allowing enough grip to prevent wheel spin under hard acceleration off the line (0-30mph). So if you want a car with a torquey high revving V12, a good interior, and fine handling at a bargain price then here is you car.
~Oracle


Pixel painting demo
Region shown is 1/8 mm
Nucleus
Neuronal process
Meganta
Yellow
Gray
Aqua
Silver
Gold
Undo
Save
Clear
Up
Left
re-center
Right
Down


By clicking button `Update` will hide arrow icon from `Normal Menu` (the buttons attached to popupmenus.)


Cost estimates
Hours estimates
Estimates can be carried out Monday-Friday between 8 AM and 5 PM.
An appointment can be scheduled, at a time that is the most convenient for you. Estimates outside of these hours can also be arranged. Written estimates will be posted - or emailed, according to your preferences - within 48 hours of an estimator's visit and are valid for 6 months.
For urgent work, estimates can be arranged promptly and work can then commence immediately.
Appointments estimates
I will evaluate the work there's to do, & provide you with a detailed description of the estimate, a full breakdown of the costs and organise a schedule.
I will also keep you updated on all the carried out work & inform you of its progress.