{{about.body}}
{{i.description}}
This is a onetime $500.00 scholarship.
Topic: “Describe the History of the Electoral College, how it works and its relevance today.”Length: Your essay should have no fewer than 1000 words and no more than 1250 words.
Form: The essay must be in English and should be typed or prepared on a computer or word processor, using black type in a non-script font no smaller than 12 point or larger than 14 point. It should be double spaced and typed on one side of a good quality 8 ½ by 11 paper. Handwritten essays will be disqualified. A limited vision student may use a tape recorder or very large type. A written transcript must be included, as well as a teacher’s or physician’s letter attesting to the student’s special need.
Each essay must have a title page listing the following:
Applicant’s full name Applicant’s Masonic Youth Group affiliation Masonic Youth Group address Name of Masonic Youth Group Leader and contact information. Essays without the above information will be disqualified Each essay must be accompanied by a signed statement of the Masonic Youth Group Leader that the applicant has had at least a 75% attendance record for the preceding year, including excused absences. Each applicant may submit only one essay Entries become the property of the Ruffians Motorcycle Club and cannot be returned.Content: No specific name or title of anyone you associate with, in the Masonic bodies, can be used in the essay.
Bibliography: Essay must have a bibliography listing of all references utilized. Internet resources, if used, should be cited in similar format to that used for printed resources. Add the electronic address used to access the document as supplementary information. Any essay with information copied directly from sources without using quotes will be DISQUALIFIED. All essays must be the applicant’s original work. You must sign and date the essay at the bottom right-hand corner of the bibliography page. That signature is an assurance from you that you did the work.
Judging: The essays will be judged by the members of the Club. Each essay will be judged based on adherence to essay topic, organization of material, interest, originality, spelling, grammar, punctuation, and neatness.
Deadline: Entries must be postmarked no later than March 25, 2017 and sent to Mark Galyean. 28622 Frairstone Ct. Rancho Palos Verdes,CA 90275 Email<EMAIL_ADDRESS>Phone<PHONE_NUMBER>i


RON97 petrol price drops by 4 sen, RON95 and diesel prices maintained
by BernamaKUALA LUMPUR (Nov 22): The retail price of RON97 petrol will drop by four sen to RM2.66 per litre, while the prices of RON95 petrol and diesel will be maintained at RM2.08 and RM2.18 per litre respectively, for the Nov 23 to 29 period.
Announcing this in a statement today, the Finance Ministry said based on the Automatic Pricing Mechanism formula, the prices of RON95 and diesel should be RM2.40 and RM2.27 per litre respectively, during the same period.
However, the prices of both products had been maintained at RM2.08 and RM2.18 per litre respectively, in line with the government's decision to stabilise the prices of petroleum products and to ensure the economic well-being of Malaysians.
The subsidy for both the products during the Nov 23 to 29 period, will cost the government RM111.6 million.


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Learning without thought is labor lost; thought without learning is perilous.
Programmer ninjas of the past used these tricks to sharpen the mind of code maintainers.
Code review gurus look for them in test tasks.
Novice developers sometimes use them even better than programmer ninjas.
Read them carefully and find out who you are -- a ninja, a novice, or maybe a code reviewer?
```warn header="Irony detected"
Many try to follow ninja paths. Few succeed.
Make the code as short as possible. Show how smart you are.
Let subtle language features guide you.
For instance, take a look at this ternary operator '?'
:
Cool, right? If you write like that, a developer who comes across this line and tries to understand what is the value of i
is going to have a merry time.
Tell them that shorter is always better. Initiate them into the paths of ninja.
The Dao hides in wordlessness. Only the Dao is well begun and well completed.
Another way to code shorter is to use single-letter variable names everywhere. Like `a`, `b` or `c`.
A short variable disappears in the code like a real ninja in the forest. No one will be able to find it using "search" of the editor. And even if someone does, they won't be able to "decipher" what the name `a` or `b` means.
...But there's an exception. A real ninja will never use `i` as the counter in a `"for"` loop. Anywhere, but not here. Look around, there are many more exotic letters. For instance, `x` or `y`.
An exotic variable as a loop counter is especially cool if the loop body takes 1-2 pages (make it longer if you can). Then if someone looks deep inside the loop, they won't be able to quickly figure out that the variable named `x` is the loop counter.
## Use abbreviations
If the team rules forbid the use of one-letter and vague names -- shorten them, make abbreviations.
Like this:
- `list` -> `lst`.
- `userAgent` -> `ua`.
- `browser` -> `brsr`.
- ...etc
Only the one with truly good intuition will be able to understand such names. Try to shorten everything. Only a worthy person should be able to uphold the development of your code.
## Soar high. Be abstract.
The great square is cornerless<br>
The great vessel is last complete,<br>
The great note is rarified sound,<br>
The great image has no form.
While choosing a name try to use the most abstract word. Like obj
, data
, value
, item
, elem
and so on.
The ideal name for a variable is data
. Use it everywhere you can. Indeed, every variable holds data, right?
…But what to do if data
is already taken? Try value
, it’s also universal. After all, a variable eventually gets a value.
Name a variable by its type: str
, num
…
Give them a try. A young initiate may wonder – are such names really useful for a ninja? Indeed, they are!
Sure, the variable name still means something. It says what’s inside the variable: a string, a number or something else. But when an outsider tries to understand the code, they’ll be surprised to see that there’s actually no information at all! And will ultimately fail to alter your well-thought code.
The value type is easy to find out by debugging. But what’s the meaning of the variable? Which string/number does it store?
There’s just no way to figure out without a good meditation!
…But what if there are no more such names? Just add a number: data1, item2, elem5
…
Only a truly attentive programmer should be able to understand your code. But how to check that?
One of the ways – use similar variable names, like date
and data
.
Mix them where you can.
A quick read of such code becomes impossible. And when there’s a typo… Ummm… We’re stuck for long, time to drink tea.
The Tao that can be told is not the eternal Tao. The name that can be named is not the eternal name.
Using _similar_ names for _same_ things makes life more interesting and shows your creativity to the public.
For instance, consider function prefixes. If a function shows a message on the screen -- start it with `display…`, like `displayMessage`. And then if another function shows on the screen something else, like a user name, start it with `show…` (like `showName`).
Insinuate that there's a subtle difference between such functions, while there is none.
Make a pact with fellow ninjas of the team: if John starts "showing" functions with `display...` in his code, then Peter could use `render..`, and Ann -- `paint...`. Note how much more interesting and diverse the code became.
...And now the hat trick!
For two functions with important differences -- use the same prefix!
For instance, the function `printPage(page)` will use a printer. And the function `printText(text)` will put the text on-screen. Let an unfamiliar reader think well over similarly named function `printMessage`: "Where does it put the message? To a printer or on the screen?". To make it really shine, `printMessage(message)` should output it in the new window!
## Reuse names
Once the whole is divided, the parts<br>
need names.<br>
There are already enough names.<br>
One must know when to stop.
Add a new variable only when absolutely necessary.
Instead, reuse existing names. Just write new values into them.
In a function try to use only variables passed as parameters.
That would make it really hard to identify what’s exactly in the variable now. And also where it comes from. The purpose is to develop the intuition and memory of a person reading the code. A person with weak intuition would have to analyze the code line-by-line and track the changes through every code branch.
An advanced variant of the approach is to covertly (!) replace the value with something alike in the middle of a loop or a function.
For instance:
function ninjaFunction(elem) {
// 20 lines of code working with elem
elem = clone(elem);
// 20 more lines, now working with the clone of the elem!
}
A fellow programmer who wants to work with elem
in the second half of the function will be surprised… Only during the debugging, after examining the code they will find out that they’re working with a clone!
Seen in code regularly. Deadly effective even against an experienced ninja.
Put underscores _
and __
before variable names. Like _name
or __value
. It would be great if only you knew their meaning. Or, better, add them just for fun, without particular meaning at all. Or different meanings in different places.
 First, the code becomes longer and less readable, and the second, a fellow developer may spend a long time trying to figure out what the underscores mean.
A smart ninja puts underscores at one spot of code and evades them at other places. That makes the code even more fragile and increases the probability of future errors.
Let everyone see how magnificent your entities are! Names like superElement
, megaFrame
and niceItem
will definitely enlighten a reader.
Indeed, from one hand, something is written: super..
, mega..
, nice..
But from the other hand – that brings no details. A reader may decide to look for a hidden meaning and meditate for an hour or two of their paid working time.
When in the light, can’t see anything in the darkness.
When in the darkness, can see everything in the light.
Use same names for variables inside and outside a function. As simple. No efforts to invent new names.
```js
let *!*user*/!* = authenticateUser();
function render() {
let *!*user*/!* = anotherValue();
...
...many lines...
...
... // <-- a programmer wants to work with user here and...
...
}
A programmer who jumps inside the render
will probably fail to notice that there’s a local user
shadowing the outer one.
Then they’ll try to work with user
assuming that it’s the external variable, the result of authenticateUser()
… The trap is sprung! Hello, debugger…
There are functions that look like they don’t change anything. Like isReady()
, checkPermission()
, findTags()
… They are assumed to carry out calculations, find and return the data, without changing anything outside of them. In other words, without “side-effects”.
A really beautiful trick is to add a “useful” action to them, besides the main task.
An expression of dazed surprise on the face of your colleague when they see a function named is..
, check..
or find...
changing something – will definitely broaden your boundaries of reason.
Another way to surprise is to return a non-standard result.
Show your original thinking! Let the call of checkPermission
return not true/false
, but a complex object with the results of the check.
Those developers who try to write if (checkPermission(..))
, will wonder why it doesn’t work. Tell them: “Read the docs!”. And give this article.
The great Tao flows everywhere,
both to the left and to the right.
Don't limit the function by what's written in its name. Be broader.
For instance, a function `validateEmail(email)` could (besides checking the email for correctness) show an error message and ask to re-enter the email.
Additional actions should not be obvious from the function name. A true ninja coder will make them not obvious from the code as well.
**Joining several actions into one protects your code from reuse.**
Imagine, another developer wants only to check the email, and not output any message. Your function `validateEmail(email)` that does both will not suit them. So they won't break your meditation by asking anything about it.
## Summary
All "pieces of advice" above are from the real code... Sometimes, written by experienced developers. Maybe even more experienced than you are ;)
- Follow some of them, and your code will become full of surprises.
- Follow many of them, and your code will become truly yours, no one would want to change it.


Walking Date - 01/11/2020
Walked by the beach for 2 hours and lost lots of calories
Walking Date - 02/11/2020
Woke up at 6am and went to walk and enjoyed nature


CityMap(width: Int = 512, height: Int = 512)
A map representing the city. The map hangs on to Buildings and Locations. The map is set up as a grid of BlockCoordinate and various layers hanging onto various values (desirability, crime, etc).


| Date | Product | Amount | Status |
|---|---|---|---|
| 04/10/2018 | iPhone Xs | $1,190 | Completed |
| 04/10/2018 | Google Pixel 2 | $790 | Completed |
| 07/10/2018 | iPhone 7 | $500 | Completed |
| Date | Product | Amount | Status |
|---|---|---|---|
| 04/10/2018 | iPhone Xs | $1,190 | Completed |
| 04/10/2018 | Google Pixel 2 | $790 | Completed |
| 07/10/2018 | iPhone 7 | $500 | Completed |


The iRODS Consortium periodically offers three-day courses to train iRODS System Architects, DataGrid Administrators, iRODS Developers, and iRODS Support Technicians. Specialized courses and workshops are also available on request. Courses will take place at RENCI headquarters in Chapel Hill, NC, or on-site training can be arranged. Cost is per student, with multiple-student and educational and nonprofit discounts available.
Contact us for more information.


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Seattle Doctors
Find a Doctor in Seattle and surroundings.
Indicate one of your main symptoms:
Indicate if you know the name of the doctor to get his informations:
Find me a doctor!


Kristina Mladenovic and Caroline Garcia led France to their third title by beating Ashleigh Barty and Samantha Stosur in the deciding singles rubber 6-4, 6-3 for a 3-2 victory in Perth.
It meant Australia's 45-year wait to be crowned champions for an eighth time continues, with the country earning a reputation as one that can't finish the job after crashing at the last hurdle for a ninth straight time.
They last won in 1974 and have since lost the final over six consecutive years from 1975-80, then again in 1984 and 1993 before another failure Sunday.
Molik said the run of defeats wasn't for want of trying.
"We gave everything today, we fell just a fraction short. That happens," she said.
"I don't regret a single day of practice or preparation that we've had. I don't have any regrets, but it hurts a lot.
"It difficult for all of us to come to grips with losing because it means so much playing in front of our home crowd," she added.
World number one Barty was distraught at the end, crying as the defeat sunk in.
After a stunning breakthrough season, she was unexpectedly beaten in her singles rubber Sunday by Mladenovic in three epic sets and then in the doubles.
Despite the painful loss, she said it had been a privilege to be in the team, which also included Ajla Tomljanovic, Astra Sharma and Priscilla Hon.
"It's been an amazing year for us and to be able to get to the Fed Cup is very precious and we will cherish it," she said.
Molik said defeat would only motivate them to go one better next year, when the tournament format will be overhauled with 12 nations competing in a six-day event in Budapest.
"I think there's no question you get better through experience. We've lost in the final but it's pretty amazing the players got to feel what's it like to be in a final," she said.
"The last couple of years we have always expected to be a team that was in the final and next year because of this we'll expect to be in another Fed Cup final.
"We'll be stronger, more resilient and more prepared. What we'll do is use this moment for fuel to drive us into the future."


count(arg) Counts the non null elements.
count(arg)
null
count$distinct(arg) Counts the distinct non null elements.
count$distinct(arg)
max(arg) The maximum of the elements.
max(arg)
min(arg) The minimum of the elements.
min(arg)


@* * Copyright 2023 HM Revenue & Customs * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *@ @import config.ApplicationConfig @import uk.gov.hmrc.govukfrontend.views.html.components._ @this(govukWarningText : GovukWarningText) @(duringPeak: Boolean, currentYear: Int, taxYearStartingYear: Int)(implicit messages: Messages, appConfig: ApplicationConfig) @if(duringPeak){ @govukWarningText(WarningText( iconFallbackText = "Warning", content = Text(messages("ated.account-summary.peak-guidance.warning", currentYear.toString, (currentYear + 1).toString)) ))
@messages("ated.account-summary.peak-guidance.text.1", currentYear.toString)
@messages("ated.account-summary.peak-guidance.text.2")
} else { @govukWarningText(WarningText( iconFallbackText = "Warning", content = Text(messages("ated.account-summary.outside-peak-guidance.warning")) ))@messages("ated.account-summary.outside-peak-guidance-part-one.text", (taxYearStartingYear + 1).toString, (taxYearStartingYear + 2).toString)
@messages("ated.account-summary.outside-peak-guidance-part-two.text", (taxYearStartingYear + 1).toString)
}


Data Binding Directives
{{ color }}
{{camera|json}}
Focus State: {{ focusState }}
Mouse State: {{ mouseState }}
Key Info: {{ keyInfo | json }}
Mouse Info: {{ mouseInfo | json }}


ExpLookitStoryPage Class
Frame to implement a basic "storybook page" trial, with images placed on the screen within a display area and a sequence of audio files played. Optionally, images may be highlighted at specified times during the audio files.
Webcam recording may be turned on or off; if on, the page is not displayed or audio started until recording begins.
Frame is displayed fullscreen, but is not paused or otherwise disabled if the user leaves fullscreen. A button appears prompting the user to return to fullscreen mode.
The parent may press 'next' to proceed, or the study may proceed automatically when audio finishes (autoProceed).
Any number of images may be placed on the screen, and their position specified. (Aspect ratio will be the same as the original image.)
This frame is displayed fullscreen; if the frame before it is not, that frame needs to include a manual "next" button so that there's a user interaction event to trigger fullscreen mode. (Browsers don't allow us to switch to FS without a user event.)
"frames": {
"story-intro-1": {
"doRecording": false,
"autoProceed": true,
"baseDir": "https://s3.amazonaws.com/lookitcontents/ingroupobligations/",
"audioTypes": ["mp3", "ogg"],
"parentTextBlock": {
"title": "Parents!",
"text": "some instructions",
"emph": true,
"css": {
"color": "red",
"font-size": "12px"
}
},
"images": [
{
"id": "leftA",
"src": "flurps1.jpg",
"left": "10",
"width": "30",
"top": "34.47"
},
{
"id": "rightA",
"src": "zazzes1.jpg",
"left": "60",
"width": "30",
"top": "34.47"
}
],
"kind": "exp-lookit-story-page",
"audioSources": [
{
"audioId": "firstAudio",
"sources": "intro1",
"highlights": [
{"range": [3.017343, 5.600283], "image": "leftA"},
{"range": [5.752911, 8.899402], "image": "rightA"}
]
}
]
}
}
Item Index
Properties
Methods
exitFullscreen
()
makeTimeEvent
-
eventName
-
[extra]
Create the time event payload for a particular frame / event. This can be overridden to add fields to every event sent by a particular frame
Parameters:
Returns:
Event type, time, and any additional metadata provided
serializeContent
-
eventTimings
-
videoID
-
videoList
Parameters captured and sent to the server
Parameters:
Returns:
The payload sent to the server
showFullscreen
()
Properties
audioSources
Object[]
Array of objects describing audio to play at the start of this frame. Each element describes a separate audio segment.
Sub-properties:
-
audioId
Stringunique string identifying this audio segment
-
sources
Object[]Array of {src: 'url', type: 'MIMEtype'} objects with audio sources for this segment
Can also give a single string
filename
, which will be expanded out to the appropriate array based onbaseDir
andaudioTypes
values; seeaudioTypes
. -
highlights
Object[]Array of {'range': [startT, endT], 'image': 'imageId'} objects, where the imageId values correspond to the ids given in images
audioTypes
String[]
['typeA', 'typeB']
and an audio source
is given as intro
, the audio source will be
expanded out to
[
{
src: 'baseDir' + 'typeA/intro.typeA',
type: 'audio/typeA'
},
{
src: 'baseDir' + 'typeB/intro.typeB',
type: 'audio/typeB'
}
]
Default: ['mp3', 'ogg']
baseDir
String
baseDir
+ img/
. Any audio/video src values provided as
strings rather than objects with src
and type
will be
expanded out to baseDir/avtype/[stub].avtype
, where the potential
avtypes are given by audioTypes
and videoTypes
.
baseDir should include a trailing slash
(e.g., http://stimuli.org/myexperiment/
); if a value is provided that
does not end in a slash, one will be added.
Default: ''
displayFullscreenOverride
String
doRecording
Boolean
Whether to do webcam recording (will wait for webcam connection before starting audio if so)
fullScreenElementId
String
images
Object[]
Array of images to display and information about their placement
Sub-properties:
-
id
Stringunique ID for this image
-
src
StringURL of image source. This can be a full URL, or relative to baseDir (see baseDir).
-
left
Stringleft margin, as percentage of story area width
-
width
Stringimage width, as percentage of story area width
-
top
Stringtop margin, as percentage of story area height
videoTypes
String[]
['typeA', 'typeB']
and a video source
is given as intro
, the video source will be
expanded out to
[
{
src: 'baseDir' + 'typeA/intro.typeA',
type: 'video/typeA'
},
{
src: 'baseDir' + 'typeB/intro.typeB',
type: 'video/typeB'
}
]
Default: ['mp4', 'webm']
Events
enteredFullscreen
leftFullscreen
nextFrame
Move to next frame
previousFrame
Move to previous frame


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My Routes
Routes you created yourself
{% if own_routes|length==0 %}
You haven't got any routes saved! Why not create one now?
{% else %}
{% with routes=own_routes %}
{% include '_routetable.html' %}
{% endwith %}
{% endif %}
Public Routes
Routes shared by other RideTime users
{% if all_routes|length==0 %}
There aren't any shared routes yet! Why not get your friends to sign up and start sharing.
{% else %}
{% with routes=all_routes %}
{% include '_routetable.html' %}
{% endwith %}
{% endif %}
{% endblock %}


%matplotlib inline
Introduction to PyTorch
Introduction to Torch’s tensor library¶
All of deep learning is computations on tensors, which are generalizations of a matrix that can be indexed in more than 2 dimensions. We will see exactly what this means in-depth later. First, lets look what we can do with tensors.
# Author: Robert Guthrie
import torch
import torch.autograd as autograd
import torch.nn as nn
import torch.nn.functional as F
import torch.optim as optim
torch.manual_seed(1)
Creating Tensors
Tensors can be created from Python lists with the torch.Tensor()
function.
# torch.tensor(data) creates a torch.Tensor object with the given data.
V_data = [1., 2., 3.]
V = torch.tensor(V_data)
print(V)
# Creates a matrix
M_data = [[1., 2., 3.], [4., 5., 6]]
M = torch.tensor(M_data)
print(M)
# Create a 3D tensor of size 2x2x2.
T_data = [[[1., 2.], [3., 4.]],
[[5., 6.], [7., 8.]]]
T = torch.tensor(T_data)
print(T)
What is a 3D tensor anyway? Think about it like this. If you have a vector, indexing into the vector gives you a scalar. If you have a matrix, indexing into the matrix gives you a vector. If you have a 3D tensor, then indexing into the tensor gives you a matrix!
A note on terminology: when I say “tensor” in this tutorial, it refers to any torch.Tensor object. Matrices and vectors are special cases of torch.Tensors, where their dimension is 1 and 2 respectively. When I am talking about 3D tensors, I will explicitly use the term “3D tensor”.
# Index into V and get a scalar (0 dimensional tensor)
print(V[0])
# Get a Python number from it
print(V[0].item())
# Index into M and get a vector
print(M[0])
# Index into T and get a matrix
print(T[0])
You can also create tensors of other datatypes. The default, as you can see, is Float. To create a tensor of integer types, try torch.LongTensor(). Check the documentation for more data types, but Float and Long will be the most common.
You can create a tensor with random data and the supplied dimensionality with torch.randn()
x = torch.randn((3, 4, 5))
print(x)
Operations with Tensors
You can operate on tensors in the ways you would expect.
x = torch.tensor([1., 2., 3.])
y = torch.tensor([4., 5., 6.])
z = x + y
print(z)
See the documentation <http://pytorch.org/docs/torch.html>
__ for a
complete list of the massive number of operations available to you. They
expand beyond just mathematical operations.
One helpful operation that we will make use of later is concatenation.
# By default, it concatenates along the first axis (concatenates rows)
x_1 = torch.randn(2, 5)
y_1 = torch.randn(3, 5)
z_1 = torch.cat([x_1, y_1])
print(z_1)
# Concatenate columns:
x_2 = torch.randn(2, 3)
y_2 = torch.randn(2, 5)
# second arg specifies which axis to concat along
z_2 = torch.cat([x_2, y_2], 1)
print(z_2)
# If your tensors are not compatible, torch will complain. Uncomment to see the error
# torch.cat([x_1, x_2])
Reshaping Tensors
Use the .view() method to reshape a tensor. This method receives heavy
use, because many neural network components expect their inputs to have
a certain shape. Often you will need to reshape before passing your data
to the component.
x = torch.randn(2, 3, 4)
print(x)
print(x.view(2, 12)) # Reshape to 2 rows, 12 columns
# Same as above. If one of the dimensions is -1, its size can be inferred
print(x.view(2, -1))
Computation Graphs and Automatic Differentiation¶
The concept of a computation graph is essential to efficient deep
learning programming, because it allows you to not have to write the
back propagation gradients yourself. A computation graph is simply a
specification of how your data is combined to give you the output. Since
the graph totally specifies what parameters were involved with which
operations, it contains enough information to compute derivatives. This
probably sounds vague, so let’s see what is going on using the
fundamental flag requires_grad
.
First, think from a programmers perspective. What is stored in the torch.Tensor objects we were creating above? Obviously the data and the shape, and maybe a few other things. But when we added two tensors together, we got an output tensor. All this output tensor knows is its data and shape. It has no idea that it was the sum of two other tensors (it could have been read in from a file, it could be the result of some other operation, etc.)
If requires_grad=True
, the Tensor object keeps track of how it was
created. Lets see it in action.
# Tensor factory methods have a ``requires_grad`` flag
x = torch.tensor([1., 2., 3], requires_grad=True)
# With requires_grad=True, you can still do all the operations you previously
# could
y = torch.tensor([4., 5., 6], requires_grad=True)
z = x + y
print(z)
# BUT z knows something extra.
print(z.grad_fn)
So Tensors know what created them. z knows that it wasn’t read in from a file, it wasn’t the result of a multiplication or exponential or whatever. And if you keep following z.grad_fn, you will find yourself at x and y.
But how does that help us compute a gradient?
# Lets sum up all the entries in z
s = z.sum()
print(s)
print(s.grad_fn)
So now, what is the derivative of this sum with respect to the first component of x? In math, we want
\begin{align}\frac{\partial s}{\partial x_0}\end{align}
Well, s knows that it was created as a sum of the tensor z. z knows that it was the sum x + y. So
\begin{align}s = \overbrace{x_0 + y_0}^\text{\(z_0\)} + \overbrace{x_1 + y_1}^\text{\(z_1\)} + \overbrace{x_2 + y_2}^\text{\(z_2\)}\end{align}
And so s contains enough information to determine that the derivative we want is 1!
Of course this glosses over the challenge of how to actually compute that derivative. The point here is that s is carrying along enough information that it is possible to compute it. In reality, the developers of Pytorch program the sum() and + operations to know how to compute their gradients, and run the back propagation algorithm. An in-depth discussion of that algorithm is beyond the scope of this tutorial.
Lets have Pytorch compute the gradient, and see that we were right: (note if you run this block multiple times, the gradient will increment. That is because Pytorch accumulates the gradient into the .grad property, since for many models this is very convenient.)
# calling .backward() on any variable will run backprop, starting from it.
s.backward()
print(x.grad)
Understanding what is going on in the block below is crucial for being a successful programmer in deep learning.
x = torch.randn(2, 2)
y = torch.randn(2, 2)
# By default, user created Tensors have ``requires_grad=False``
print(x.requires_grad, y.requires_grad)
z = x + y
# So you can't backprop through z
print(z.grad_fn)
# ``.requires_grad_( ... )`` changes an existing Tensor's ``requires_grad``
# flag in-place. The input flag defaults to ``True`` if not given.
x = x.requires_grad_()
y = y.requires_grad_()
# z contains enough information to compute gradients, as we saw above
z = x + y
print(z.grad_fn)
# If any input to an operation has ``requires_grad=True``, so will the output
print(z.requires_grad)
# Now z has the computation history that relates itself to x and y
# Can we just take its values, and **detach** it from its history?
new_z = z.detach()
# ... does new_z have information to backprop to x and y?
# NO!
print(new_z.grad_fn)
# And how could it? ``z.detach()`` returns a tensor that shares the same storage
# as ``z``, but with the computation history forgotten. It doesn't know anything
# about how it was computed.
# In essence, we have broken the Tensor away from its past history
You can also stop autograd from tracking history on Tensors
with .requires_grad
=True by wrapping the code block in
with torch.no_grad():
print(x.requires_grad)
print((x ** 2).requires_grad)
with torch.no_grad():
print((x ** 2).requires_grad)


Shaka Player
API Documentation:
https://shaka-player-demo.appspot.com/docs/index.html
GitHub Project:
https://github.com/google/shaka-player
CDNJS:
https://cdnjs.com/libraries/shaka-player
NPM:
https://www.npmjs.com/package/shaka-player
Stream Setup
Stream type:
DASH
HTTP
Offline
Media URL:
Key system:
org.w3.clearkey
com.widevine.alpha
net.bogus.keysystem
(none)
License server URL:
Subtitles URL:
Preferred language:
Test manifest:
"Angel One" (TNG clip) - multilingual, subtitles, VP8
"Car" (YT DASH test) - MP4
"Car/CENC" (YT DASH EME test) - MP4, ClearKey
"Feelings" (YT DASH test) - VP9
"Feelings" (YT DASH test) - Audio only
"Car/SegmentTemplate" (Chromecast test) - MP4 (no SIDX, video only), Widevine
"GPAC/SegmentList" (conformance test)
"Oops" (modified YT DASH EME test) - MP4, multi-DRM
"Oops" (modified YT DASH EME test) - MP4, Widevine, PSSH in MPD
"Sintel" (1080p high bitrate test) - MP4
"Sintel" (4k) - MP4, VP8, VP9
"Sintel" (4k) - MP4, Widevine
(custom)
Custom manifest URL:
Store stream offline
Custom WV license server URL:
[?]
Offline Content:
Delete stream from storage
Load stream
Stream Info
Enable trick play?
Enable adaptation?
Available video tracks:
Cycle video tracks
Available audio tracks:
Cycle audio tracks
Available text tracks:
Enable subs?
Active resolution:
Buffered ahead:
Buffered behind:
0:00


Deploying (GITHUB, HEROKU, RSYNC)
Here are some nice and easy ways to deploy your Octopress blog.
GitHub Pages
Hosting your blog with GitHub’s Pages service is free and allows custom domains. To deploy you simply push your repository to GitHub. This is a great way to host a personal blog, or even a multi-author blog, where contributions can be handled with pull requests and commit access.
Heroku
Like GitHub Pages, Heroku is also free, allows custom domains, and uses a git based deployment workflow. Heroku is a bit simpler to use and your blog repository remains private.


CindyJS: Complex Function Plot with user input
f(z) :=
You can use variables
t
or
a
for the time or the position of the point respectively.


The carousel below automatically adjusts its own size to accommodate a set of flag images of different sizes. This feature makes it easy to drop a carousel onto a page without having to apply explicit styling to the carousel or the images.


A sparse graph is a graph with relatively few edges .


UNoFFICAL PHASE 10
About Me
How to Play Phase 10
Home Page
Lets Play
name
score
ADD IT
10
input name of total and keeps score.


Learning involves back and forth in two mode
procrastination
the action of delaying or postponing something
Working Memory
Can handle 4 chunks at a time
Over Learing - Einstullung Effect - Interleaving
Ilusion of completence
- Recall
- Test your self
- Change place of study when you recall
TIPS
- Always make your todo, a night before
- Learn small chunks everyday
- Better you get something, the more you enjoy
Learning is too important to be left behind in the classroom
Thank You
Credits
https://www.coursera.org/learn/learning-how-to-learn


Civilians flying drones has caused lots of controversy. The government does not want people flying drones that can damage or invade privacy. A $400 remote control quadcopter was landed on White house grounds. Just weeks before a meeting was held and videos of low costing drones firing weapons was shown. A DJ phantom 2 was used, the same model as the one that landed on the White House. Civilians think they should have the right to fly drones but is it really worth the risk?
Drones, they can be quadcopters or even octocopters. The quadcopters work on a very simple system. Each motor/propeller spinning in the opposite direction from the two motors on either side of it, opposite rotors spin in the same direction. To control pitch and turn by speeding up two motors on one side and slowing down the other two. Altitude is controlled by speeding up and slowing down all motors at the same time. The copters themselves are not aerodynamically stable. They require an on board computer to analyze data from gyroscopes and accelerometers to maintain a stable flight.
Of course with drones that can record sound and video there are regulations. The government fears that drones can violate people’s privacy and interfere with aircrafts. If your drone weighs more than .55 pounds you must register it. Penalties are quite harsh, if you fly a drone without registration you can face criminal charges up to 3 years in jail or up to $250,000 in fines.
To learn more about drone legality, follow the link here.


File
Description
summary: Dto for the rental.controller.createRentalMethod()
- note: request payloads are dto classes and not interfaces so they can be accessed by NestJS at runtime
Implements
|
pricing
|
Type : literal type
|
|
|
|
registration
|
Type : literal type
|
|
|
|
rentalDescription
|
Type : string
|
|
|
|
scheduling
|
Type : literal type
|
|
|
|
specs
|
Type : literal type
|
|
|
import { CreateRentalInterface } from '../../../rental/interface/service/create-rental.interface';
/**
* **summary**: Dto for the rental.controller.createRentalMethod()
* - note: [**request payloads**](https://docs.nestjs.com/controllers#request-payloads) are dto classes and not interfaces so they can be accessed by NestJS at runtime
*/
export class CreateRentalDto implements CreateRentalInterface {
rentalTitle: string;
rentalDescription: string;
address: string;
specs: {
odometer: number;
transmission: string;
cityMpg: number | null;
hwyMpg: number | null;
mpgE: number | null;
fuel: string;
gasGrade: string;
description: string;
make: string;
model: string;
style: string;
color: string;
numOfSeats: number;
numDoors: number;
};
registration: {
vin: string;
licensePlate: string;
state: string;
};
features: string[];
scheduling: {
requiredNotice: number;
rentMinDuration: number;
rentMaxDuration: number;
};
pricing: {
price: number;
discounts: {
weekly: number;
monthly: number;
};
};
loc: {
type: string;
coordinates: [number, number];
};
photos: string[];
listed: boolean;
}


DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
ABOUT US
The Online Quiz System In PHP is a simple project for taking and giving the examination online. The project contains an admin side and the user side. The admin can view and manage the users, their rankings, and manage the quiz questions. The purpose of taking the online exam is to save students time in examinations. And this online method needs less manpower to execute the examination.
The users are the students who take part in the exam. A user has to login to enter the quiz competition. If he/she has not registered, they can register first and then login. This project is a very simple project that makes a convenient way for any organization to check the performance of the student that they give in an examination.
About System
This Online Quiz System is in PHP, CSS, JavaScript, and bootstrap. Talking about the features of the Online Quiz system, it just contains both the admin section and the user section. The user can log in to give the exam, while the admin can view all users, their rankings and manage questions. The design of this project is pretty simple so that the user won’t find any difficulties while working on it.


Login now


Zend\Authentication\Adapter\DbTable provides the ability to authenticate against credentials stored in a database table. Because Zend\Authentication\Adapter\DbTable requires an instance of Zend\Db\Adapter\Adapter to be passed to its constructor, each instance is bound to a particular database connection. Other configuration options may be set through the constructor and through instance methods, one for each option.
The available configuration options include:
As explained in the introduction, the Zend\Authentication\Adapter\DbTable constructor requires an instance of Zend\Db\Adapter\Adapter that serves as the database connection to which the authentication adapter instance is bound. First, the database connection should be created.
The following code creates an adapter for an in-memory database, creates a simple table schema, and inserts a row against which we can perform an authentication query later. This example requires the PDO SQLite extension to be available:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | use Zend\Db\Adapter\Adapter as DbAdapter;
// Create a SQLite database connection
$dbAdapter = new DbAdapter(array(
'driver' => 'Pdo_Sqlite',
'database' => 'path/to/sqlite.db'
));
// Build a simple table creation query
$sqlCreate = 'CREATE TABLE [users] ('
. '[id] INTEGER NOT NULL PRIMARY KEY, '
. '[username] VARCHAR(50) UNIQUE NOT NULL, '
. '[password] VARCHAR(32) NULL, '
. '[real_name] VARCHAR(150) NULL)';
// Create the authentication credentials table
$dbAdapter->query($sqlCreate);
// Build a query to insert a row for which authentication may succeed
$sqlInsert = "INSERT INTO users (username, password, real_name) "
. "VALUES ('my_username', 'my_password', 'My Real Name')";
// Insert the data
$dbAdapter->query($sqlInsert);
|
With the database connection and table data available, an instance of Zend\Authentication\Adapter\DbTable may be created. Configuration option values may be passed to the constructor or deferred as parameters to setter methods after instantiation:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | use Zend\Authentication\Adapter\DbTable as AuthAdapter;
// Configure the instance with constructor parameters...
$authAdapter = new AuthAdapter($dbAdapter,
'users',
'username',
'password'
);
// ...or configure the instance with setter methods
$authAdapter = new AuthAdapter($dbAdapter);
$authAdapter
->setTableName('users')
->setIdentityColumn('username')
->setCredentialColumn('password')
;
|
At this point, the authentication adapter instance is ready to accept authentication queries. In order to formulate an authentication query, the input credential values are passed to the adapter prior to calling the authenticate() method:
1 2 3 4 5 6 7 | // Set the input credential values (e.g., from a login form)
$authAdapter
->setIdentity('my_username')
->setCredential('my_password')
;
// Perform the authentication query, saving the result
|
In addition to the availability of the getIdentity() method upon the authentication result object, Zend\Authentication\Adapter\DbTable also supports retrieving the table row upon authentication success:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | // Print the identity
echo $result->getIdentity() . "\n\n";
// Print the result row
print_r($authAdapter->getResultRowObject());
/* Output:
my_username
Array
(
[id] => 1
[username] => my_username
[password] => my_password
[real_name] => My Real Name
)
*/
|
Since the table row contains the credential value, it is important to secure the values against unintended access.
When retrieving the result object, we can either specify what columns to return, or what columns to omit:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | $columnsToReturn = array(
'id', 'username', 'real_name'
);
print_r($authAdapter->getResultRowObject($columnsToReturn));
/* Output:
Array
(
[id] => 1
[username] => my_username
[real_name] => My Real Name
)
*/
$columnsToOmit = array('password');
print_r($authAdapter->getResultRowObject(null, $columnsToOmit);
/* Output:
Array
(
[id] => 1
[username] => my_username
[real_name] => My Real Name
)
*/
|
By default, Zend\Authentication\Adapter\DbTable returns the identity supplied back to the auth object upon successful authentication. Another use case scenario, where developers want to store to the persistent storage mechanism of Zend\Authentication an identity object containing other useful information, is solved by using the getResultRowObject() method to return a stdClass object. The following code snippet illustrates its use:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | // authenticate with Zend\Authentication\Adapter\DbTable
$result = $this->_auth->authenticate($adapter);
if ($result->isValid()) {
// store the identity as an object where only the username and
// real_name have been returned
$storage = $this->_auth->getStorage();
$storage->write($adapter->getResultRowObject(array(
'username',
'real_name',
)));
// store the identity as an object where the password column has
// been omitted
$storage->write($adapter->getResultRowObject(
null,
'password'
));
/* ... */
} else {
/* ... */
}
|
While the primary purpose of the Zend\Authentication component (and consequently Zend\Authentication\Adapter\DbTable) is primarily authentication and not authorization, there are a few instances and problems that toe the line between which domain they fit within. Depending on how you’ve decided to explain your problem, it sometimes makes sense to solve what could look like an authorization problem within the authentication adapter.
With that disclaimer out of the way, Zend\Authentication\Adapter\DbTable has some built in mechanisms that can be leveraged for additional checks at authentication time to solve some common user problems.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | use Zend\Authentication\Adapter\DbTable as AuthAdapter;
// The status field value of an account is not equal to "compromised"
$adapter = new AuthAdapter($db,
'users',
'username',
'password',
'MD5(?) AND status != "compromised"'
);
// The active field value of an account is equal to "TRUE"
$adapter = new AuthAdapter($db,
'users',
'username',
'password',
'MD5(?) AND active = "TRUE"'
);
|
Another scenario can be the implementation of a salting mechanism. Salting is a term referring to a technique which can highly improve your application’s security. It’s based on the idea that concatenating a random string to every password makes it impossible to accomplish a successful brute force attack on the database using pre-computed hash values from a dictionary.
Therefore, we need to modify our table to store our salt string:
1 2 3 | $sqlAlter = "ALTER TABLE [users] "
. "ADD COLUMN [password_salt] "
. "AFTER [password]";
|
Here’s a simple way to generate a salt string for every user at registration:
1 2 3 4 | $dynamicSalt = '';
for ($i = 0; $i < 50; $i++) {
$dynamicSalt .= chr(rand(33, 126));
}
|
And now let’s build the adapter:
1 2 3 4 5 6 | $adapter = new AuthAdapter($db,
'users',
'username',
'password',
"MD5(CONCAT('staticSalt', ?, password_salt))"
);
|
Note
You can improve security even more by using a static salt value hard coded into your application. In the case that your database is compromised (e. g. by an SQL injection attack) but your web server is intact your data is still unusable for the attacker.
Another alternative is to use the getDbSelect() method of the Zend\Authentication\Adapter\DbTable after the adapter has been constructed. This method will return the Zend\Db\Sql\Select object instance it will use to complete the authenticate() routine. It is important to note that this method will always return the same object regardless if authenticate() has been called or not. This object will not have any of the identity or credential information in it as those values are placed into the select object at authenticate() time.
An example of a situation where one might want to use the getDbSelect() method would check the status of a user, in other words to see if that user’s account is enabled.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | // Continuing with the example from above
$adapter = new AuthAdapter($db,
'users',
'username',
'password',
'MD5(?)'
);
// get select object (by reference)
$select = $adapter->getDbSelect();
$select->where('active = "TRUE"');
// authenticate, this ensures that users.active = TRUE
$adapter->authenticate();
|
The source code of this file is hosted on GitHub. Everyone can update and fix errors in this document with few clicks - no downloads needed.


To rewritte project history using branches you can use the rebase command. Basically, it puts all the commits from the branch in front of the commits of <base>. Rebase is a common way to integrate upstream changes into your local repository.
git rebase <base>
Consider you are working on a branch named branch1 and after you do some programming, the master had to be modified with some fixes. To have a plain project history you must integrate the feature branch1 with a rebase.
git checkout branch1
git rebase master
This moves the branch1 commits to the tip of master, updating your branch history. Then you can merge directly to master. Now you can do a standard fast-forward merge from master, which is insert the branch1 changes into the local master.
git checkout master
git merge branch1
To use an interactive rebasing you just add the -i flag to the command. Instead of a blind set of operations the GitShell will open another session and let you pick or squash commits organizing the code.
 They are stored as remote branches and is useful for reviewing changes before integrating them.
git fetch ze
To synchronize the local repository with central repository master branch is the following process:
git fetch origin # Download remote commits and branches
git log --oneline master.. origin/master # See what commits were added
git checkout master # Move to master
git log origin/master # See what is on origin/master
git merge origin/master # Synchronize origin/master into local master
To make things easier the pull command wrapps the fetch and merge into one command.
git pull origin # It is the same as "git fetch origin" + "git merge origin/master"
Instead of default merge, explicit –rebase flag replaces the merge command to rebase after fetch.
To export commits to remote branch you may use push.
git push origin master # Push the specified branch to the remote origin
A standard method for publishing local contributions to central repository:
git checkout master
git fetch origin master
git rebase -i origin/master
Squash commits, fix up commit messages etc.
git push origin master


--- layout: layout --- Hi, I'm Momin. I make games and websites in Richmond, Virginia. Check out my code on GitHub and my posts and projects below. Contact me for work inquiries, questions, comments, or whatever reason at @{{ site.twitter }} or by email. Some words I've written {% include post-list.html post_list_limit=3 no_filter=true %} More words... Some things I've done {% include project-grid.html project_grid_limit=46 small_items=true %} More things...


| CONTENTS | PREV | NEXT | Java Remote Method Invocation |
Exception Context
java.rmi.UnmarshalException
Corrupted stream leads to either an I/O or protocol error when:
Marshaling return header Checking return type Checking return code Unmarshaling return
Return value class not found.
java.rmi.UnexpectedException
An exception not mentioned in the method signature occurred (excluding runtime exceptions). The
UnexpectedException
exception object contains the underlying exception that was thrown by the server.
java.rmi.ServerError
Any error that occurs while the server is executing a remote method. The
ServerError
exception object contains the underlying error that was thrown by the server,
java.rmi.ServerException
This exception is thrown as a result of a remote method invocation when a
RemoteException
is thrown while processing the invocation on the server, either while unmarshalling the arguments or executing the remote method itself. For examples, see Section A.3.1, "Possible Causes of java.rmi.ServerException".
java.rmi.ServerRuntimeException
note: this exception is deprecated as of Java 2 SDK, Standard Edition, v1.2
This exception is not thrown by servers running Java 2 SDK, Standard Edition, v1.2-compatible versions. A
RuntimeException
is propagated to clients intact.
CONTENTS | PREV | NEXT
Copyright © 1997-2004 Sun Microsystems, Inc. All Rights Reserved.


Clownfish
-
Diets: Algae and planktons
-
Behavior: Territorial
-
Price: $14.99
Clownfish are like the goldfish of the ocean. They are colorful and playful. Their colors come in a variety ranging from orange to black. They are the perfect pet for small childrens and first time fish owner. However, they are aggressive and territorial so if you want to raise a lot of them, it is advise to have a big aquarium tank.
Shark
-
Diets: Smaller fish
-
Behavior: Solitary
-
Price: $4,999.99
Sharks are arguably one of the coolest animal on the planet!  Depending on the species, they can come in many different sizes and colors. Their diets are pretty obvious, they eat anything that they can kill. Obviously, this beast is not recommended for unexperience pet owner because raising a shark may have lethal consequences.
Sea Urchin
-
Diets: Algae, coral, decomposing matters
-
Behavior: Myriad
-
Price: $5.99
Sea Urchins are spiky. They are pretty much useless and move around at the bottom of the ocean floor. Their spikes are venomous and it hurts to be stung by them. However, they are also considered a delicacy in many parts of the world, especially the Eastern Asian culture.
Hermit Crab
-
Diets: Decomposing matters, fruits
-
Behavior: Varies
-
Price: $3.99
Hermit Crabs are a fun pet to own. You can often change their shells when they outgrow their old ones.  Just imagine the crab being an underwater poodle. They are fairly simple to raise but remember, crabs can also move on land so becareful where you place them.
Octopus
-
Diets: Crabs, molluscs, smaller octopi, prawns, fish
-
Behavior: Solitary
-
Price: $249.99
Octopus are considered to be one of the smartest animal in the world. But because of its short livespan, they can't utilize their smartness. They are experts in hiding from predators because they can fit in any small hole as long as their beaks can pass through the opening. Not only that, they can also change their texture and color based on their surroundings.


|
|
Vector8d | motor_target_currents_ |
| | Entries for the simulated hardware.
|
| |
|
Vector8d | motor_torques_ |
| |
|
Vector8d | motor_target_torques_ |
| |
|
Vector8d | motor_encoder_indexes_ |
| |
|
Vector8d | joint_positions_ |
| |
|
Vector8d | joint_velocities_ |
| |
|
Vector8d | joint_torques_ |
| |
|
Vector8d | joint_target_torques_ |
| |
|
Vector4d | contact_sensors_ |
| |
|
Vector4d | slider_positions_ |
| |
|
Vector8d | motor_enabled_ |
| |
|
Vector8d | motor_ready_ |
| |
|
Vector4d | motor_board_enabled_ |
| |
|
Vector4d | motor_board_errors_ |
| |
|
Vector8d | ctrl_joint_torques_ |
| |
|
double | motors_inertia_ |
| |
|
double | motors_torque_constant_ |
| |
|
double | motors_gear_ratio_ |
| |
| void dg_blmc_robots::DGMQuadrupedSimu::get_sensors_to_map |
( |
dynamic_graph::VectorDGMap & |
map | ) |
|
get_sensors_to_map acquieres the sensors data and feed it to the input/output map
- Parameters
-
| void dg_blmc_robots::DGMQuadrupedSimu::set_motor_controls_from_map |
( |
const dynamic_graph::VectorDGMap & |
map | ) |
|
set_motor_controls_from_map reads the input map that contains the controls and send these controls to the hardware.
- Parameters
-
The documentation for this class was generated from the following files:


Polygon Sponsor
|
Voronoi Predicates
In mathematical theory predicate is an operator which returns true
or false (e.g. it may answer a question: "is it sunny today?").
Voronoi predicates contain implementation of a set of the geometric
predicates used by the Voronoi builder.
Except of those they also provide
functors that allow to compute the coordinates of the centers of the
inscribed
circles (those correspond to the Voronoi vertices) within the given
relative error precision range (64 machine epsilons). This means that
the more mantissa bits
your floating point type has the better precision of the output
geometries you'll get. This
is a very handy functionality as it allows to improve output precision
simply providing 3rd party IEEE-754 like floating-point types.
Geometric Predicates
The main issues with the implementation of any complex geometric
algorithm arise when dealing with the robustness of the geometric
predicates.
Usually this
is also the point where the commercial projects stand strong against
noncommercial implementations (it's not the case with our
implementation).
For the short example let's consider the following code snippet, that
could
be used to compute orientation of the three points:
double
cross_product(double dx1, double dy1, double dx2, double dy2) {
return dx1 * dy2 - dx2 * dy1;
}
int main() {
int v = 1 << 30; // 2 ^ 30
double result = cross_product(v, v - 1, v + 1,
v);
printf("%.3f", result);
return 0;
}
The
output of this simple program will be "0.000", while
the correct one is "1.000". In terms of the orientation test this means
that points are collinear instead of being CCW oriented. This is one of
the basic predicates used in any geometric algorithm and taking wrong
output from it may influence the further algorithm execution:
corrupting algorithm underlying structures or producing completely
invalid output. Voronoi uses
slightly more complex predicates. To insure that they are robust and
efficient the approach that combines two known techniques (lazy
arithmetic and multiple
precision computations) is used.
Lazy Arithmetic
Lazy
arithmetic is based on the usage of IEEE-754 floating-point types to
quickly evaluate the result of the expression. While this approach has
a good speed
performance it doesn't produce reliable results all the time (as in the
example above). The way to solve the issue is apart from computing
result of the expression compute the relative error of it as well. This
will
give us the range of values the evaluated result belongs to and based
on that we can
come up with two decisions: 1) output the value; 2) recompute the
expression using multiprecision type. The way relative errors are
evaluated is explained in the Voronoi
Robust FPT section.
Multiple Precision Arithmetic
In the vast majority of cases
the lazy arithmetic approach produces correct result thus further
processing is not required. In other cases the Voronoi library defined
or user
provided multiple precision types are used to produce correct result.
However even that doesn't solve all the cases. Multiprecision geometric
predicates could be divided onto two categories:
1) mathematical transformation of the predicate exists that evaluates
the exact result:
Predicate: A/B + C/D ?< 0;
After math. transform: (A*D + B*C) / (B * D) ?< 0;
Predicate: sqrt(A) ?< 1.2;
After math. transform: A ?< 1.44;
2) the correct result could be produced only by increasing
precision of the multiprecision type and with defined relative error
for the output type:
Predicate:
sqrt(A) + sqrt(B) + sqrt(C) + sqrt(D) + sqrt(E) ?< 1.2;
Imagine that value of the expression to the left is very close to 1.2;
Predicate:
sin(x) ?< 0.57;
Relative error of sin function should be known;
The Voronoi of points could be completely
implemented using predicates of the first type, however the Voronoi of
segments could not.
The predicate that doesn't fall into the first category is responsible
for comparison of the Voronoi circle events. However it appears that
properly used
this predicate can't corrupt algorithm internal structures and produces
output technically the same as produced in case this predicate fell in
the first category. The main reasons for this are: 1) algorithm
operates with integer coordinate type of the input geometries; 2)
closely
situated Voronoi vertices are considered to be the same in the output
data structure (this won't influence main targets algorithm is used
for).
|


splitfont - extract characters from an ISO-type font.
splitfont fontfile <character range>...
The command splitfont removes characters from a given font file; it removes all the specified characters from the named font file.
This works for Linux console fonts, without PSF headers, and containing just 256 characters.
The character range is of the form
17,23-30,
setfont(8).


Press Release
The Performing Arts Genome Project launches to power artificial intelligence in live arts
Dec. 10, 2019 (Toronto, Canada) ― A coalition of industry and academic collaborators announced today the Performing Arts Genome Project: a comprehensive analysis of the performing arts to power personalized show recommendations.
Traditional approaches to recommendation systems, such as those for videos, music, or books, rely on analyzing the content and collecting user ratings and reviews over time to power the recommendations. The ephemeral nature of live arts requires a different approach: the domain needs to be carefully modeled so that shows can be recommended even before opening night.
The Performing Arts Genome relies on a knowledge base of shows, companies and artists, as well as critic reviews and industry awards. This data has been made possible by contributions from a number of key industry stakeholders, including SummerWorks, Toronto Fringe, the Toronto Alliance for the Performing Arts (TAPA), Toronto Theatre Database and Theatre Museum Canada.
"When people are searching for entertainment options online, most users spend only a few minutes searching for content,” says Jacoba Knaapen, Executive Director of TAPA. “If they don't find something of interest quickly, they are likely to go somewhere else, as there are so many other options to choose from. Developing discovery solutions for live performance could be critical for TAPA members in helping audiences quickly find matched content that fits their tastes."
The Performing Arts Genome Project is tackling two main challenges: a) modeling the individual dimensions, or “genes,” that dictate our preferences for live arts, such as genres, mood, tone, form, content and features, and b) measuring the collection of genes, the “genome,” for companies, artists, venues and works of live performance using a combination of machine learning and manual curation. This work has a number of applications, including matching algorithms, recommender systems and discovery tools that help people find work that fits their taste profile and needs.
“Everyone has a unique relationship with live performance – no one has exactly the same tastes or needs, especially when it comes to accessibility. So delivering a great experience to every audience member requires a comprehensive and vast understanding of the entire sector, which simply doesn’t exist today,” says Mariel Marshall, CEO and founder of Toronto-based startup StagePage Ltd. The company is a live-arts intelligence company providing a domain specific recommender system for performing arts organizations to grow their audiences.
The Toronto Fringe, a grassroots, charitable organization which presents over 150 shows annually, is using the technology to power a personalized show recommendation engine for Next Stage festival audiences. A beta version of the quiz is available to try on the Toronto Fringe website at: fringetoronto.com
“The 2019 festival was the best-selling Toronto Fringe of all time. It’s a festival with something for everyone, but we want everyone to be able to navigate and access it,” says Executive Director Lucy Eveleigh. “Our recommendation engine can match a user with a specific show in less than a minute by asking a few simple questions, so it’s a great way to lower a potential barrier to entry.”
The Performing Arts Genome Project will release open-sector reports on key findings in three stages, with the first scheduled for February 2020. The project is made possible with the support of the Canada Council for the Arts. For media inquiries, or to get involved, please contact<EMAIL_ADDRESS>About Canada Council for the Arts
The Canada Council for the Arts is Canada’s public arts funder, with a mandate to foster and promote the study and enjoyment of, and the production of works in, the arts. The Council champions and invests in artistic excellence through a broad range of grants, services, prizes and payments to professional Canadian artists and arts organizations. Its work ensures that excellent, vibrant and diverse art and literature engages Canadians, enriches their communities and reaches markets around the world. The Council also raises public awareness and appreciation of the arts through its communications, research and arts promotion activities. It is responsible for the Canadian Commission for UNESCO, which promotes the values and programs of UNESCO in Canada to contribute to a more peaceful, equitable and sustainable future. The Canada Council Art Bank operates art rental programs and helps further public engagement with contemporary arts.


Vector Merging
append(x, values, after = length(x))
If x
and values
are of class factor
,
the function returns an object of class factor
whereas levels are
determined using cfactor
internally. Levels are only
preserved if both elements have the same levels. In addition, ordering
is only preserved if the order is also identical.
Otherwise, the base
method is called directly.


| First Name | Last Name | Job Title | DOB | Status |
|---|---|---|---|---|
| Isidra | Boudreaux | Traffic Court Referee | 22 Jun 1972 | Active |
| Shona | Woldt | Airline Transport Pilot | 3 Oct 1981 | Disabled |
| Granville | Leonardo | Business Services Sales Representative | 19 Apr 1969 | Suspended |
| Easer | Dragoo | Drywall Stripper | 13 Dec 1977 | Active |
| Maple | Halladay | Aviation Tactical Readiness Officer | 30 Dec 1991 | Suspended |
| Maxine | Woldt | Business Services Sales Representative | 17 Oct 1987 | Disabled |
| Lorraine | Mcgaughy | Hemodialysis Technician | 11 Nov 1983 | Disabled |
| Lizzee | Goodlow | Technical Services Librarian | 1 Nov 1961 | Suspended |
| Judi | Badgett | Electrical Lineworker | 23 Jun 1981 | Active |
| Lauri | Hyland | Blackjack Supervisor | 15 Nov 1985 | Suspended |
<link href="path_to_your_css/footable.core.css" rel="stylesheet" type="text/css" />
But you can also use one of our built-in themes if you want:
<link href="path_to_your_css/themes/footable.standalone.css" rel="stylesheet" type="text/css" />
Check out the demos for our Metro and Original FooTable themes.

FooTable works off the concept of breakpoints. These can be customized, but the default breakpoints are
breakpoints: { phone: 480, tablet: 1024 }
To change the breakpoints simply pass in a breakpoints option when initializing FooTable:
$('.footable').footable({ breakpoints: { tiny: 100, medium: 555, big: 2048 } });
You then need to tell FooTable which columns to hide on which breakpoints, by specifying data-hide
attributes on the table head columns:

 Name	 Job Title	 Status	 Description

In the above example the following will be true:
| Column | Data Attribute | Shown on Desktop | Shown on Tablet | Shown on Phone |
|---|---|---|---|---|
| Name | [none] | yes | yes | yes |
| Job Title | data-hide="phone" |
yes | yes | no |
| Status | data-hide="phone,tablet" |
yes | no | no |
| Description | data-hide="all" |
no | no | no |
You can set a column to always be hidden, by adding data-hide="all"
to the table head column. (Check out the icon styles demo to see this in action)


Tom MacWright / @tmcw / tmcw
dev @MapBox
writing/hackin @macwright.org
want more words? here's an accompaniment
minute (keystrokes)
Not a chart library (though you can make charts with it)
Not a map library (though you can make maps with it)
Not a compatibility layer (it doesn't work with bad browsers)
Not about SVG or HTML or Canvas (though you can use it with them)
not an SVG abstraction layer
it doesn't have its own way of making a line or a circle. it makes you deal with svg elements as svg elements. plus, you can deal with HTML elements and Canvas elements!
d3.select('#foo')
.style('background', '#000')
.on('click', function() {})
.append('div');
$('#foo')
.css('background', '#000')
.click(function() {})
.append($('

'));
d3.json('foo.json',
function(err, data) { });
$.getJSON('foo.json',
function(data) { });
that's just the silly stuff, though
// a fully-featured jquery replacement
function $(x) {
return document.querySelectorAll(x);
}
// a fully-featured jquery replacement
$.ajax = function(url, callback) {
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.onload = callback;
xhr.send();
}
let's get to the hard stuff, then
Let's review some Javascript (1x)
why did we learn that? because identifying objects is one of the biggest parts of the join
now let's understand the hardest part of d3 by building it from scratch.
you have the knowledge! time to d3.
d3.selectAll('div')
.data([1, 2, 3])
.enter()
.append('div')
.text(String);
// an empty selection.
// looking for instantiations of data
d3.selectAll('div')
// data, which would be bound to a
// selection
.data([1, 2, 3])
// for every time that we see data
// but we do not see an element
.enter()
// append an element
.append('div')
// and fill it with text
.text(String);
// and fill it with text
.text(String);
// wait what
// what's going on here?
.text(String);
d3.selectAll('div')
.data([1, 2, 3])
.enter()
.append('div')
.text(String);
// d3 has a few different
// functions that set stuff
.text()
.property()
.style()
.attr()
// each takes a function
.attr('foo', function() { })
// and that function gets data
// from your .data()
.attr('foo', function(d) {
return d.foo;
})
// like jQuery, you can chain these
blah
.attr('foo', 'bar')
.attr('boo', 'burr');
// like jQuery, you can use them
// to get an existing value
var fooValue = blah.attr('foo');
// if you provide a static argument,
// it becomes a functor
.attr('foo', 5)
// here's what a functor is
function functor(x) {
return function() {
return x;
};
}
we just used a closure.
don't know what a closure is?
bit.ly/js-closure-explain
// and what it does
var val = functor(10);
// val is now a function that
// always returns 10
assert.equal(val(), 10);
but what did you mean by .enter()?
d3 is all about enter, exit, and update
// this is an empty selection
var selection = d3.selectAll('div')
.data([1, 2, 3]);
// for each part of the data which
// is not joined to an element in
// the selection,
// add an element
selection
.enter()
.append('div');
// for each part of the selection
// that is no longer in the data,
// remove it
selection
.exit()
.remove();
// for each part of the selection,
// update some attribute
selection
.text(function(d) {
return d.bar;
});
so data is bound to the DOM
but what does that mean?
 Here are some less-tricky transformations
d3.scale.linear()
// data comes in
.domain([0, 100])
// representation comes out
.range([0, 1]);
var projection = d3.geo.mercator();
// data goes in
// representation comes out
var px projection([lon, lat]);
Same rule as jQuery's reusing $blah = $('#blah')
var fooSelection = d3.selectAll('#foo');
// do not turn around and do
d3.selectAll('#foo')
// again
and they love math
var graph = new Rickshaw.Graph({
element: document.querySelector("#rick"),
renderer: 'bar',
series:[{
data:[{ x:0, y:40 }, { x:1, y:49 }],
color:'steelblue'
}, {
data:[{ x:0, y:20 }, { x:1, y:24 }],
color:'lightblue'
}]});
4: Postscript, Where to Go From Here
It is not about d3.
d3 is about it.
It's zany.


Note: Please ‘accept’ this HIT only if you have access to a laptop or desktop with internal or external speakers or headphones and if you are using Chrome or Firefox browser. This HIT involves listening and evaluating audio clips.
-TBD---
Before working on this HIT, please read the consent details on the 'View Consent Details' section of the HIT page. By accepting this HIT on Mechanical Turk, you will be indicating your consent to participating in our study as per the details outlined the consent details section.
-TBD-
Please use the ‘Contact this requester’ link on the HIT details if you need further details or clarifications on the task. The Principal Investigator (the person in charge of this research) or his/her representative will describe this research to you and answer all of your questions. Note: On using this feature, your e-mail address and your name will automatically be visible to our research team so that we can reply to you.
Please see summary tab for all instructions.
Thank you for your interest in this audio evaluation task on Mechanical Turk. This page outlines the details with respect to your consent to participate in our study.
Your personal data: Only the principal investigator and his/her representative has your worker ID and this will not be released to any other person. We will NOT request Amazon Mechanical Turk for your person identifying details. Also, this worker ID data will not be used in a publication or presentation. We will use this worker ID only for the purposes of correlating consent to HIT responses and distributing compensation via Mechanical Turk.
All data collected will be kept in accordance to the National University of Singapore’s Research Data Management Policy. Research data used in any publication will be kept for a minimum of 10 years before being discarded.
Please listen to all sound clips fully before submitting the task.
Please read the instructions by clicking on 'View Instructions' and details regarding your consent by clicking on 'View Consent Details'. By accepting this HIT, you agree to the terms of this study outlined in the 'View Consent Details' section
Audio interpolation test
This page outlines 4 audio clips. There are 2 reference 'end points' audio clips in blue. There are 2 other clips which are longer than the references and combine them by synthetically or programatically interpolating in between them.
Please select which interpolation sounds more perceptually continuous.
Reference clip 1:
Reference clip 2:
Interpolated clip 1: (PK comment - Interpolation without remapping)
Interpolated clip 2: (PK comment - Interpolation with remapping)
Listen to all sound clips fully on this page before submitting your response.


Hi, you might have guessed by now my interest in the design field. In order to describe myself i would start with my education. Currently, I am a Senior in Middle East Technical Univeristy, Ankara, Turkey. My interest and development in this field is due to the different courses and the knowledge i gained throughout my curriculum.
How did this site come to existence?
All thanks to my sir! I took an elective course where we learned mainly about html and css. As you might notice, I am still learning and experimenting but this is my progress!


{% load i18n localeurl_tags %}
{% trans "An email has been sent to site admins. Thanks for your message !" %}
{% trans "An error occurred when sending message. This error has been reported to site admin. Please try later." %}


{% if _cfg("secret-key") == "hello world" %}
You need to change the secret key to something other than "hello world".
{% else %}
Your secret key looks good.
{% endif %}
{% if _cfg("domain") == "localhost:5000" %}
You should change your domain to something other than localhost.
{% else %}
Your domain is set to "{{_cfg("domain")}}".
{% endif %}
{% if _cfg("protocol") != "https" %}
Stripe requires your website to use HTTPS.
{% else %}
Stripe requires your website to use HTTPS.
{% endif %}
{% if not _cfg("smtp-host") %}
You should configure an SMTP server to send emails with.
{% else %}
Your email configuration looks good.
{% endif %}
{% if not _cfg("stripe-secret") or not _cfg("stripe-publish") %}
Your Stripe API keys are not in your config file.
{% else %}
Your Stripe API keys look good.
{% endif %}
{% if not _cfg("patreon-access-token") or not _cfg("patreon-campaign") %}
Your Patreon access token and campaign are not configured (optional).
{% else %}
Your Patreon integration looks good. We'll integrate with
{{ _cfg("patreon-campaign") }}'s campaign.
{% endif %}
You can make changes and refresh this page if you like.


JavaScript Tests for CSS Selectors
Selectory is a CSS reprocessor that resolves selectors using JS. This plugin will read CSS selectors that end with a [test]
attribute and use JavaScript to determine whether or not to apply that style to elements matching the other part of that selector. For example, the JS test 1 == 1
will always resolve to true
, so a selector written for div[test="1 == 1"] {}
will always apply to each div
element.
By default, Selectory will reprocess selectors by watching the following events:
load
resize
input
click
To run Selectory whenever you want, use the selectory.load()
function in JS.
Other things you can do with Selectory include:
Apply a rule to a div
when it is wider than 300px:
div[test="this.offsetWidth > 300"] {
background: orange;
}
Apply a rule to an input
when its value=""
attribute is greater than 30
:
input[test="this.value > 30"] {
background: lime;
}
Apply a rule to an input
when it has a value=""
attribute zero characters long:
input[test="this.value.length == 0"] {
background: purple;
}
Apply a rule to an input
when its value=""
attribute is more than 5 characters long:
input[test="5 < this.value.length"] {
background: turquoise;
}
Apply a rule to an h3
element when it contains at least one span
element:
h3[test="(this.querySelector('span'))"] {
color: red;
}
It is limited what selectors you can use with Selectory, things like :hover
and pseudo-classes tend not to work as well. As well the parsing only allows for 1 test per selector, and complex selectors may not work as intended. Using selector[test=""] {}
with a simple selector is best.