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What happens to Chebyshev polynomials integration when n=1. <p>The integration of Chebyshev polynomials of the first kind has the following value,
$$\int T_{n}(x) \, dx = \frac{1}{2} \, \left( \frac{T_{n+1}(x)}{n+1} - \frac{T_{n-1}(x)}{n-1} \right)$$
what happens when n=1? We have zero division.</p>
<p>Best, Mohd</p>
| 0non-cybersec
| Stackexchange |
Do you ever just go to a sequel without buying the first or second game?. I mean i never played the Witcher 1 or 2 and just went straight to 3 same with Mass Effect i just went straight to 3 | 0non-cybersec
| Reddit |
Error code C4 when installing Windows Server 2012 on VirtualBox. <p>I am getting error code C4 when trying to install Windows Server 2012 on VirtualBox. I was able to install this a few weeks ago. However I had to install a fresh copy again. This time however I always get error C4 no matter what I try.</p>
<p>Settings I'm using:</p>
<ul>
<li>1024 MB base memory</li>
<li>2 Processors</li>
<li>27Mb video memory</li>
<li>I have checked to ensure Intel Virtualization Technology (vt-x) is
enabled in my BIOS.</li>
<li>Also I have SetExtraData as suggested in <a href="https://4sysops.com/forums/topic/windows-server-2012-r2-on-virtual-box-error-0x000000c4/" rel="nofollow noreferrer">this post</a>.</li>
</ul>
<p>One change I have made to the BIOS since the last successful install was to disable "No eXecute".</p>
<p>Any ideas as to what I am doing wrong?</p>
| 0non-cybersec
| Stackexchange |
Can I transfer files alo copy paste in Remmina (or another RDP client) on 13.04 while connected to a Windows 7?. <p>When I connect to a remote Windows 7 using as FROM a Windows 7 machine, I can copy paste files between machines. How can I enable that feature while using as FROM Ubuntu?</p>
| 0non-cybersec
| Stackexchange |
Unrecognized option when nice used through ssh. <p>How to use <code>nice</code> on remote host via <code>ssh</code>?</p>
<p>I want to decrease priority for long interactive process, executed on remote host:</p>
<pre><code>ssh server1 nice -n tar --update --preserve-permissions --file /opt/share/content/mirror/.tar --directory /opt/share/content/version/0 .
</code></pre>
<p>Error message:</p>
<blockquote>
<p>nice: unrecognized option '--update'</p>
<p>Try 'nice --help' for more information.</p>
<p>Connection to server1 closed.</p>
</blockquote>
<p><code>ssh -t</code>, short versions of parameters and any combination of quotes for <code>ssh</code> or <code>nice</code> parameters changes nothing.</p>
<p><code>ssh server1 'echo $SHELL'</code> prints <code>/bin/bash</code>, if matters much.</p>
| 0non-cybersec
| Stackexchange |
How to use GridSearchCV output for a scikit prediction?. <p>In the following code:</p>
<pre><code># Load dataset
iris = datasets.load_iris()
X, y = iris.data, iris.target
rf_feature_imp = RandomForestClassifier(100)
feat_selection = SelectFromModel(rf_feature_imp, threshold=0.5)
clf = RandomForestClassifier(5000)
model = Pipeline([
('fs', feat_selection),
('clf', clf),
])
params = {
'fs__threshold': [0.5, 0.3, 0.7],
'fs__estimator__max_features': ['auto', 'sqrt', 'log2'],
'clf__max_features': ['auto', 'sqrt', 'log2'],
}
gs = GridSearchCV(model, params, ...)
gs.fit(X,y)
</code></pre>
<p><strong>What should be used for a prediction?</strong></p>
<ul>
<li><code>gs</code>?</li>
<li><code>gs.best_estimator_</code>?
or</li>
<li><code>gs.best_estimator_.named_steps['clf']</code>?</li>
</ul>
<p><strong>What is the difference between these 3?</strong></p>
| 0non-cybersec
| Stackexchange |
Why did the leper chase the leopard?. Because she wanted the D.
(I dreamed this joke last night. Not bad for a dream joke.) | 0non-cybersec
| Reddit |
S T Y L E GIRLE DOES HERSELF A PATIENT. | 0non-cybersec
| Reddit |
About the orientation of index formula on orbifold. <p>Let <span class="math-container">$X$</span> be a closed oriented orbifold with singularity <span class="math-container">$\Sigma X$</span>. The singularity is defined as
<span class="math-container">$$ \Sigma X=\{(x)|~x\in X,~G_x\neq1\}, $$</span><br>
where <span class="math-container">$G_x$</span> is the isotropy group. </p>
<p>For <span class="math-container">$u\in K_v(TX)$</span>, as stated in Kawasaki's paper <a href="https://projecteuclid.org/euclid.nmj/1118786571" rel="nofollow noreferrer">https://projecteuclid.org/euclid.nmj/1118786571</a> we have
<span class="math-container">$$ Ind(u)=(-1)^{\dim(X)}<ch(u)\hat A^2(X),[TX]>+\sum^n_{i=1}\frac{(-1)^{\dim(\Sigma_i)}}{m_i}<ch^\Sigma(u)\hat A^{2,\Sigma}(\Sigma_iX),[T\Sigma_i X]>,$$</span>
where <span class="math-container">$\{\Sigma_iX\}$</span> denotes all the components of the singularity set. </p>
<p><strong>Q</strong> </p>
<ul>
<li>I do not follow how to choose the orientations of the singularity set <span class="math-container">$\Sigma X$</span>.</li>
<li>It seems that if we reverse the orientation of the singularity, then the formula changes? </li>
</ul>
| 0non-cybersec
| Stackexchange |
Lake Michigan shipwreck found perfectly preserved after 112 years. | 0non-cybersec
| Reddit |
Initialization of std::array with function pointer member function of constexpr object. <p>I am trying to initialize an std::array of function pointers. These pointers point to member functions of an already instantiated object.</p>
<p>Can somebody please help with the following example? Many thanks in advance!</p>
<pre><code>#include <array>
using TVoidVoid = void (*)(void);
class Foo {
public:
constexpr Foo() {}
void myHandler() {}
};
class Bar {
public:
constexpr Bar() : handler_{nullptr} {}
constexpr Bar(TVoidVoid handler) : handler_{handler} {}
private:
TVoidVoid handler_;
};
Foo f;
std::array<Bar, 5> bar_array = {{Bar{}, Bar{f.myHandler}}};
int main() {}
</code></pre>
<p>compiling produces:</p>
<pre><code>main.cpp:22:56: error: no matching function for call to ‘Bar::Bar(<brace-enclosed initializer list>)’
std::array<Bar, 5> bar_array = {{Bar{}, Bar{f.myHandler}}};
</code></pre>
<p>I am using <code>g++ (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0</code>.</p>
| 0non-cybersec
| Stackexchange |
Ever wonder why there is almost always a beach scene?. Aside from the fact that beach scenes in anime allow for fan service I found a more historical reason that seemed pretty feasible.
A National Holiday, Marine Day (海の日, Umi no Hi), is a day to basically go to the beach in order to celebrate the Meji Emperor returning from a voyage around japan in 1876, a day of gratitude for the ocean, and to hope for economic prosperity for Japan who is obviously surrounded by water. | 0non-cybersec
| Reddit |
Types of beer guide. | 0non-cybersec
| Reddit |
Multiple conditional formatting rules across multiple ranges?. <p>I need to do the following. Highlight a row if cell E contains a number greater than 30 AND cell L contains a number greater than 100. This rule needs to be applied to all rows. Can you help please? </p>
| 0non-cybersec
| Stackexchange |
Creating the First Colony on Mars. | 0non-cybersec
| Reddit |
A data structure supporting O(1) random access and worst-case O(1) append?. <p>I realize a resizable indexed collection that uses an array to store its elements (like <code>List<T></code> in .NET or <code>ArrayList</code> in Java) has <a href="http://en.wikipedia.org/wiki/Amortized_analysis" rel="noreferrer">amortized O(1) insertion time</a> at the end of the collection. But then there's always that <em>one</em> pesky insertion at critical junctures where the collection has <em>just</em> reached its capacity and the next insertion requires a full copy of all elements in the internal array to a new one (presumably twice as large).</p>
<p>A common mistake (in my opinion) is to go with a linked list to "fix" this problem; but I believe the overhead of allocating a node for every element can be quite wasteful, and in fact would dwarf the benefit of a guaranteed O(1) insertion in that rare case that the array insertion is costly—when, in fact, every <em>other</em> array insertion is significantly cheaper (and faster).</p>
<p>What I was thinking might make sense is a hybrid approach consisting of a linked list of arrays, where every time the current "head" array reaches its capacity, a new array twice as large is added to the linked list. Then no copy would be necessary since the linked list would still have the original array. Essentially this seems analogous (to me) to the <code>List<T></code> or <code>ArrayList</code> approach, except that wherever you previously would've incurred the cost of copying all the elements of the internal array, here you only incur the cost of allocating a <em>new</em> array plus a single node insertion.</p>
<p>Of course, this would complicate other features if they were desired (e.g., inserting/removing into/from the middle of the collection); but as I've expressed in the title, I'm really just looking for an <em>add-only</em> (and iterate) collection.</p>
<p>Are there any data structures out there ideally suited to this purpose? Or, can you think of one yourself?</p>
| 0non-cybersec
| Stackexchange |
How to change text color in spinner without using textview. <p>I want to change text color for spinner <strong>without using <code>textView</code></strong>, I have already searched and found some tutorials <a href="https://stackoverflow.com/questions/6159113/android-where-is-the-spinner-widgets-text-color-attribute-hiding">Android: Where is the Spinner widget's text color attribute hiding?</a> </p>
<p>but the main thing is they have used <code>textView</code>.</p>
<pre><code><Spinner
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="1"
android:entries="@array/Gender_Selection_arrays"
android:prompt="@string/Gender_Selection"
android:id="@+id/gendersel"
android:popupBackground="#67656c"/>
</code></pre>
<p>I know this code is not to change text color.</p>
<p>I have no idea how to do that,please guide me for doing the same. </p>
<p>Any help would be appreciable.</p>
| 0non-cybersec
| Stackexchange |
Chaotic good. | 0non-cybersec
| Reddit |
Sailor's trunk. | 0non-cybersec
| Reddit |
How to make Thunderbird suggest favorite contacts first when sending mails?. <p>My Thunderbird client is connected to the rather large LDAP directory of our company. When I start typing in the "To:" field, it lists all matching LDAP entries alphabetically. This list is very long until I'm done typing the entire name.</p>
<p>I send mails only to 0,01% of the people in my company, so I would prefer if it would <strong>first</strong> suggest entries </p>
<ul>
<li>I used most in the past</li>
<li>from my local address book</li>
</ul>
<p>Are there any add-ons / tools / configs. for this?</p>
<p>Thanks!</p>
| 0non-cybersec
| Stackexchange |
Unable to invoke a lambda from another lambda using aws serverless offline. <p>I want to invoke a lambda from another lambda inside serverless-offline .I want to make a serverless offline web application.But I am getting this error:</p>
<blockquote>
<p>{ UnknownError: Unsupported Media Type
at Object.extractError (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\protocol\json.js:51:27)
at Request.extractError (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\protocol\rest_json.js:55:8)
at Request.callListeners (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\sequential_executor.js:106:20)
at Request.emit (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\sequential_executor.js:78:10)
at Request.emit (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:683:14)
at Request.transition (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:22:10)
at AcceptorStateMachine.runTo (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\state_machine.js:14:12)
at C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\state_machine.js:26:10
at Request. (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:38:9)
at Request. (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:685:12)
at Request.callListeners (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\sequential_executor.js:116:18)
at Request.emit (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\sequential_executor.js:78:10)
at Request.emit (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:683:14)
at Request.transition (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:22:10)
at AcceptorStateMachine.runTo (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\state_machine.js:14:12)
at C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\state_machine.js:26:10
at Request. (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:38:9)
at Request. (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\request.js:685:12)
at Request.callListeners (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\sequential_executor.js:116:18)
at callNextListener (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\sequential_executor.js:96:12)
at IncomingMessage.onEnd (C:\Users\gourabkonar\Desktop\sls-demo\node_modules\aws-sdk\lib\event_listeners.js:307:13)
at IncomingMessage.emit (events.js:203:15)
at IncomingMessage.EventEmitter.emit (domain.js:448:20)
at endReadableNT (_stream_readable.js:1129:12)
at process._tickCallback (internal/process/next_tick.js:63:19)
message: 'Unsupported Media Type',
code: 'UnknownError',
time: 2019-11-06T17:02:27.641Z,
requestId: undefined,
statusCode: 415,
retryable: false,
retryDelay: 6.643720301281952 }</p>
</blockquote>
<hr>
<p><strong>sls-api-dev-create</strong></p>
<pre><code> const jobs=[
{ id: 1,title: 'NodeJS Developer'},
{id: 2, title:'Angular Developer'}
];
var AWS = require('aws-sdk');
AWS.config.region = 'ap-southeast-2';
let lambda = new AWS.Lambda({
region: 'ap-south-1',
endpoint: 'http://localhost:3000/jobs'
})
module.exports.handler=async(evt,ctx)=>{
console.log(evt.body);
jobs.push(JSON.parse(evt.body));
lambda.invoke({
FunctionName: 'sls-api-dev-hello',
InvocationType: 'Event',
Payload:null
},function(err,data){
console.log('No error');
if(!err)
console.log(data);
else
console.log(err);
})
//console.log(response);
return {
statusCode :200,
body:JSON.stringify({
jobs
})
}
}
</code></pre>
<p><strong>sls-api-dev-hello</strong></p>
<pre><code>'use strict';
module.exports.hello = async event => {
return {
statusCode: 200,
body: JSON.stringify(
{
message: 'Welcome to Serverless',
input: event,
},
null,
2
),
};
// Use this code if you don't use the http event with the LAMBDA-PROXY integration
// return { message: 'Go Serverless v1.0! Your function executed successfully!', event };
};
</code></pre>
<p><strong>serverless.yml</strong></p>
<pre><code>service: sls-api
provider:
name: aws
runtime: nodejs10.x
region: ap-south-1
iamRoleStatements:
- Effect: Allow
Action:
- lambda: InvokeFunction
- lambda: InvokeAysnc
Resource: "*"
plugins:
- serverless-offline
- serverless-offline-lambda
functions:
hello:
handler: handler.hello
jobs:
handler: src/jobs/handler.handler
listJobs:
handler: src/jobs/list.handler
events:
- http:
method: GET
path: /jobs
createJobs:
handler: src/jobs/create.handler
environment:
SOME_VARIABLE: http://localhost:3000/jobs
events:
- http:
method: POST
path: /jobs
getJob:
handler: src/jobs/findOne.handler
events:
- http:
method: GET
path: /jobs/{id}
request:
parameters:
id: true
</code></pre>
<p>Please help ,Any help would be great as I am new to serverless.Thanks in advance.</p>
| 0non-cybersec
| Stackexchange |
A proof about the probability theory. <p>Let $Y_1,..,Y_n$ be random variables. Given that for all $1\le k \le n-1,k\in \mathbb{N}$, $Y_k$ is independent to the joint distribution of the other $n-1$ random variable, prove that $Y_n$ is also independent of the other $n-1$ random variables. I have tried to show that all $Y_1,...,Y_{n-1}$ are independent but not sure how to show that even $Y_n$ are independent of joint distributions $Y_1,...,Y_{n-1}$. </p>
| 0non-cybersec
| Stackexchange |
Bibbidi bobbidi abcde-di. | 0non-cybersec
| Reddit |
Need to install a Multi-Desktop Environment on a virtual machine. <p>I need to install a virtual machine with seperated desktops for each user and each one with it's own customizing enabled. There should also be a separate desktop for guests with a fixed envirionment and disabled settings. Although I'm running multiple ubuntu servers, I have absolute no idea how to setup a ubuntu graphical environment. The goal is to reach a configuration like this:</p>
<pre><code>user0 => desktop 0 => admin => accessed from everywhere (and local)
user1 => desktop 1 => user => accessed remote only from everywhere
user2 => desktop 2 => user => accessed remote only from everywhere
user3 => desktop 3 => guest => accessed remote only from restricted network
(I only need these four users at this time.)
</code></pre>
<p>Is that possible? And if, how can I realize this? What are the minimum requirements (RAM, HDD, etc.)</p>
<p>I've installed the new 14.04 desktop, but have even problems to get remote access enabled. I realized, that my knowledge is ok on the console, but with grapical things I'm a absolute beginner. </p>
<p>I really need help!</p>
<p>Regards,
Michael</p>
| 0non-cybersec
| Stackexchange |
I'm sorry Texas I love you, but Colorado's mountains are bigger and better... (1136x640) (OC). | 0non-cybersec
| Reddit |
Reddit, what did you buy with your first ever paycheck?. | 0non-cybersec
| Reddit |
Help with complex logarithms. <p>For real $x$ what does $-\ln(1-e^{2\pi i x})$ equal so that it agrees with the series expansion, how would I find the real and imaginary parts.
$$-\ln(1-e^{2\pi ix})=\sum_{n=1}^\infty\frac{e^{2\pi i n x}}{n}$$</p>
| 0non-cybersec
| Stackexchange |
The pollen being shook on this tree. | 0non-cybersec
| Reddit |
INDIA threat From PAKISTAN. | 0non-cybersec
| Reddit |
How do you go about building an entire outfit around a single accessory? I now have to find away to make neon green glasses work in a (fairly) professional setting.. Hey guys! Long time lurker but first time poster. Let me know if this is too simple of a question or needs to be moved somewhere else.
So basically, I started wearing Gunnar Intercept glasses to help with my headaches from computer screens and fluorescent. It worked! I picked the green glasses at the time, because I really love the color green and just wanted to be fun and a little different. Here's a picture of me with them on. https://imgur.com/a/subJd
Yes, I realize now that they might not be the most fashionable thing in the world, but I'm kind of ~~unable~~ don't really want to change that. And honestly, I still love wearing them. It became abundantly clear to me the other day that I can absolutely not stop wearing them though.
Fast forward and I still wear them, and now everyone in the company, including higher-up leadership, knows me by these. They've essentially become a personal brand. The CEO (of a company with like 18k people) saw me without my glasses and didn't even recognize me, and told me not to show up without those again (playfully, but kind of seriously.)
So now I'm stuck. Since I've moved up in the company, I want to start dressing with more style, especially since I have more disposable income. I'm pretty sure I just don't know how to match with this kind of green, so I kind of just wear some blacks and dark purples and really don't use a lot of variety. I have some brown iron ranger's for boots already, so if I can make these work with the rest of the outfit too, that'd be awesome.
The company is kind of a mixture between casual and business, so sometimes t-shirts/sweaters are totally fine, and sometimes I need to be in at least a coat if I'm meeting with clients. I'm kind of the zany guy in these meetings, I'm the creative/business guy and then others will play the "straight man" role.
Anyway thanks a lot. Any kind of help or direction with color coordination with these bright green glasses, or even the types of clothes to wear in order to make this work will be wildly appreciated. | 0non-cybersec
| Reddit |
How to suspend the Linux system for a specific period of time remotely?. <p>I'd like to suspend or hibernate my RedHat 5 Linux system for a specific period of time. For example I'd like to suspend the system at 12:00 and wake it up at 15:00 remotely.</p>
<p>Is there any way to do this ?</p>
| 0non-cybersec
| Stackexchange |
Traffic Multiplier Review 2019 - DISCOUNT & AWESOME Bonus Package. | 0non-cybersec
| Reddit |
When Jabba dies and you have to take any gig you can.... | 0non-cybersec
| Reddit |
VEEAM Saved us big today. A few lessons learned.. Short version - had someone working on GPO objects at a site, and part of what they thought they needed to do was make a new OU and move some servers to that OU. Fast forward a few hours "Uh hey, can you look at this?" I go and look, and almost all of the servers from ADUC are gone - and not in any other OU. I try to sign onto another server and get the "primary trust relationship has failed yadada". Try powershell commands to reset password to join/fix that and of course that doesn't work. Crap. So I log into a server as a local admin and that works, and it still thinks it's part of the domain. I don't want to remove/rejoin 30+ servers...
VEEAM! Oh ya - that has some AD restore stuff from our application aware backups. Well, this isn't a lab, but we are close to being SOL here - effectively nobody can sign on to any servers with domain credentials. Quick Google points me to https://helpcenter.veeam.com/docs/backup/explorers/vead_using_ad_item_rest_wiz.html?ver=95.
Mount backup of DC from around 3 hours prior, do ADUC restore - I see all the computers! Restore one as a test, go to DC01, F5, boom. Server shows up. Sign into it with domain credentials as a test - it works! Wait a few min, check DC02, - it synced as well. Back to VEEAM - click all the computer objects, restore to original location - boom. Saved the day.
Lessons learned
* make sure you have backups (duh)
* make sure you TEST your backups (I got lucky)
* make sure to not be afraid to ask for help if you are doing something you don't know how so you don't remove all computers from a domain
* make sure to spot check people you are assigning tasks to make sure they are comfortable and offer assistance
* remember Ben Parker - "With great power comes great responsibility". Careful having admin access to a domain. | 0non-cybersec
| Reddit |
My metal head friend and I discussed DAMN. on the newest episode of our podcast! It's kind of a book club for music, we'd love to hear your thoughts!. | 0non-cybersec
| Reddit |
Find out my bind DN in a Windows network. <p>I am in a windows network and want to use Linux' LDAP search.
For this I need to find out my DN.</p>
<p>I am already logged in on a Windows computer using Outlook to the exchange server and this one seems to be able to access the Active directory and global address book.</p>
<p>How can I find out my own bind DN?</p>
<p>I already tried <code>"cn=myusername,cn=Users,DC=ourdomainname,DC=local"</code>:</p>
<pre><code># ldapsearch -H ldap://hostname.ourdomainame.local -v -x -D "c=myusername,cn=Users,DC=ourdomainname,DC=local" "cn=John Doe" -w Foobar
ldap_initialize( ldap://hostname.ourdomainame.local:389/??base )
ldap_bind: Invalid credentials (49)
additional info: 80090308: LdapErr: DSID-0C0903AA, comment: AcceptSecurityContext error, data 525, v1772
</code></pre>
<p>EDIT:</p>
<p>according to <a href="https://confluence.atlassian.com/display/CONFKB/LDAP+Error+Code+49" rel="nofollow noreferrer">https://confluence.atlassian.com/display/CONFKB/LDAP+Error+Code+49</a> the error code 525 I get means "user not found". </p>
<p>I also tried <code>-D "uid=myusername"</code> and <code>-D "uid=mymailname,dc=ourdomainname,dc=com"</code></p>
| 0non-cybersec
| Stackexchange |
What's /r/cheeseandricereddit and why is it trending?. I saw that it's a subreddit with literally zero posts and it seems to be trending for today. Has a lot of subscribers, too. Why? | 0non-cybersec
| Reddit |
What is the best formula for combining two parameters with different priority?. <p>I have a pretty general question: I'm working on my thesis and I took an online test from some people. I want to assign score to each person based on</p>
<ol>
<li>number of their correct answer (C) and</li>
<li>their average response time (T).
My idea for scoring them is to divide number of correct answer by average response time (C/T). So more correct answers and less average response time, leads to higher score.</li>
</ol>
<p>The problem is that I prefer to reduce impact of T on scores (C is more important) but I don't know What is the best formula.</p>
| 0non-cybersec
| Stackexchange |
Expectation of the square of the sum over the sum of the squares. <p>Let $X_1, X_2, \ldots, X_n$ be i.i.d. random variables from a distribution $D$ on the real numbers with mean $\mu$ and variance $\sigma^2$. Assume that the probability of $X_i = 0$ is $0$. What is the expectation
$$
\mathbb{E}\left[\frac{(X_1 + X_2 + \cdots + X_n)^2}{X_1^2 + X_2^2 + \cdots + X_n^2}\right]?
$$</p>
<p>Or, is it impossible to express in terms of $\mu$ and $\sigma^2$?</p>
<p><strong>Comments:</strong>
If we factor out $n^2$ from the numerator and $n$ from the denominator, it's equivalent to
$$
\mathbb{E}\left[\frac{n^2 \cdot \text{AM}^2}{n \cdot \text{QM}^2}\right]
= n \cdot \mathbb{E}\left[ \left(\frac{\text{AM}}{\text{QM}}\right)^2\right],
$$
where AM is the arithmetic mean and QM is the quadratic mean. So the answer is positive and between $0$ and $n$, by QM-AM inequality.</p>
<p>This came up in the calculation of a different expectation. I tried calculating a few specific cases, but I haven't gotten an answer yet. It seems possible the answer doesn't just depend on $\mu$ and $\sigma^2$, but on the other hand, I might just be missing the right trick of how to apply i.i.d. Also the numerator relates nicely to the variance, so maybe a decomposition along those lines works.</p>
| 0non-cybersec
| Stackexchange |
Nightmare Productions - Films that were a nightmare to make!. | 0non-cybersec
| Reddit |
Been working on this for almost a week, still a good bit left. | 0non-cybersec
| Reddit |
Chattanooga's Police Chief has updated his department's Code of Conduct, saying they have a duty to stop others in the department from committing illegal activities including acts of brutality and abuse of authority.. | 0non-cybersec
| Reddit |
The Game of Thrones... food truck.. | 0non-cybersec
| Reddit |
How to Get An Android Emulator On Ubuntu 16.04. <p>Can someone please help me i want to get an emulator so I can play clash of clans but I don't know how, please help?</p>
| 0non-cybersec
| Stackexchange |
Insert missing data within blocks. <p>I`m a biologist and I am trying to solve this problem, please guide me on where to start.
I do not know which forum to post this in, please let me know if this place is not appropriate.</p>
<p>I have blocks of values which can be strictly either of two sources or a mixture of the sources.</p>
<p><code>'source1', 'source2' and 'mixture'</code> are keywords in the real data.</p>
<p>The source values are limited within the set <code>{ AA, TT, GG , CC }</code></p>
<p>The mixture values are limited within the set <code>{ AA , TT , GG , CC , AT , AG, AC , TG , TC , GC }</code>
but the mixture values are dependent on their source within the same block.
So if within blockN,</p>
<pre><code> source1 =XX where X~{A,T,G,C}
source2 =YY where Y~{A,T,G,C}
</code></pre>
<p>then mixture values have to be among <code>{ XX, YY, XY }</code></p>
<p>Sometimes, either or both sources are missing from my data, in that case I want to insert the missing source values,</p>
<p>If within a block, Source1 is missing , Source2 is <code>XX</code>, and one of the mixture values is <code>YY</code>, then we know Source1 is <code>YY</code>.
Another example is if in a block, Source1 is missing , Source2 is <code>XX</code>, and one of the mixture values is <code>XY</code>, then Source1 is <code>YY</code>.
As you can see, there are te above 2 ways of knowing the source depending on what is present in the mixture set.</p>
<p>There can be cases where both sources are absent, but there are mixture values XY in the block. This tells us Source1 and Source2
are XX and YY (or <code>YY and XX</code> , order matters not).</p>
<p>If my example data is</p>
<pre><code>block1 source1 AA
block1 source2 TT
block1 mixture AT
block1 mixture AA
block1 mixture TT
block2 source1 GG
block2 source2 TT
block2 mixture TG
block2 mixture TG
block2 mixture TT
block3 source1 AA
block3 source2 TT
block3 mixture AT
block3 mixture AA
block3 mixture TT
block4 mixture AT
block4 mixture AA
block4 mixture TT
block5 source2 TT
block5 mixture TG
block5 mixture TG
</code></pre>
<p>The output which I want is</p>
<pre><code>block1 source1 AA
block1 source2 TT
block1 mixture AT
block1 mixture AA
block1 mixture TT
block2 source1 GG
block2 source2 TT
block2 mixture TG
block2 mixture TG
block2 mixture TT
block3 source1 AA
block3 source2 TT
block3 mixture AT
block3 mixture AA
block3 mixture TT
block4 source1 AA
block4 source2 TT
block4 mixture AT
block4 mixture AA
block4 mixture TT
block5 source1 GG
block5 source2 TT
block5 mixture TG
block5 mixture TG
</code></pre>
<p>Please note the insertions in blocks 4 and 5. I have separated the blocks for ease of understanding; in the real data they are not separated by blank lines.</p>
| 0non-cybersec
| Stackexchange |
Why are the common default shortcuts in terminal all use shift?. <p>Like <kbd>Ctrl</kbd> +<kbd> shift</kbd> + <kbd>C</kbd> for copy, <kbd>Ctrl</kbd> +<kbd> shift</kbd> + <kbd>V</kbd> for paste ... It's annoying since they're universal shortcuts, they shouldn't be different from everywhere else, but I'm guessing there was good reasons for this choice.
Could it cause issues to remove the Shift in those shortcuts ?</p>
<p>EDIT: After changing the shortcut in Ubuntu's terminal to <kbd>Ctrl</kbd> + <kbd>C</kbd>, programs termination is now automatically configured to use <kbd>Ctrl</kbd> +<kbd> shift</kbd> + <kbd>C</kbd>. This OS is pretty smart!</p>
| 0non-cybersec
| Stackexchange |
[50/50] Wine bottle opener inserted into urethra (NSFW/L) | Miranda Kerr's photoshoot pics (NSFW). | 0non-cybersec
| Reddit |
NodeJS Express post request always returning a 404 page, while it does return the correct page. <p>Im pretty new to NodeJS and I'm writing a pagination script to display database data. To navigate to the next results im using form buttons because that's the only way I got the button interaction working with Node. I know that it is not the best practice but its sufficient for my needs right now :) However, when the user clicks the next/previous button, the post request does get called but always returns a 404 page, whilst if I copy that exact returning page and load it in myself, the page loads fine. </p>
<p>The post function: </p>
<pre><code> if(req.body.next){
console.log(req.body.next)
start += 100;
console.log(start);
get_products(start);
}
if(start >= 0 && req.body.prev){
console.log(req.body.prev)
start -= 100;
console.log(start);
get_products(start);
}
});
</code></pre>
<p>The Pug form: </p>
<pre><code>form(method = 'POST', action="/products")
button(type='submit', name='prev', value='prev') previous
button(type='submit', name='next', value='next') next
</code></pre>
<p>Output of the posts: </p>
<pre><code>next
100
POST /products - - ms - -
prev
0
POST /products - - ms - -
next
100
POST /products - - ms - -
next
200
POST /products - - ms - -
next
300
POST /products - - ms - -
next
400
POST /products - - ms - -
prev
300
</code></pre>
| 0non-cybersec
| Stackexchange |
Show that $x^4+py^4+p^2z^4=p^3w^4$ has no solutions, where $p$ is any prime.. <p>I am trying to show that the equation: \begin{equation}x^4+py^4+p^2z^4=p^3w^4\end{equation} has no solutions. </p>
<p>Assuming there is a nonzero solution $(x_0,y_0,z_0,w_0)$, with $w_0$ minimal, then it must be that $p \, \vert \, {x_0}^4 \implies p \, \vert \, x_0$. Writing $x_0=px_1$, substituting this into the equation and simplifying: $$p^3{x_1}^4+{y_0}^4+p{z_0}^4=p^2{w_0}^4.$$ Hence, $p \, \vert \, y_0$. Continuing in this way, we find that $w_0=pw_1$, and so $(x_1,y_1,z_1,w_1)$ is a (nonzero) solution with $w_1<w_0$, a contradiction.</p>
<p>Does this constitute a proof by infinite descent? </p>
| 0non-cybersec
| Stackexchange |
check if image exists php. <p>I am in the middle of coding up a property portal. I am stuck on checking images. I know how to check if an image url is set. But the problem is detecting if there is actually a valid image at the url.</p>
<p>example : <a href="http://property.images.themovechannel.com/cache/7217/6094437/img_main.jpg" rel="noreferrer">http://property.images.themovechannel.com/cache/7217/6094437/img_main.jpg</a></p>
<p>This image url exists but the image is has now been removed so it just displays blank in my propety search page. Is there a way of checking there is an image there at the url and then displaying a placeholder if it doesnt exist.</p>
<p>something like </p>
<pre><code>$imageURL = "http://property.images.themovechannel.com/cache/7217/6094437/img_main.jpg";
if (exists($imageURL)) { display image }
else { display placeholder }
</code></pre>
<p>But all this does is check the url exists, which it does there is just no image there</p>
<p>Thanks in advance</p>
| 0non-cybersec
| Stackexchange |
Fully Customized Table in Latex. <p>Is it possible to have a customized table in LaTeX that has the following features?</p>
<ol>
<li>Be able to define Width and/or Height for specific row/column</li>
<li>Be able to highlight/color a specific row or column or a cell</li>
<li>Be able to align horizontally and/or vertically the columns/rows</li>
</ol>
<p>This is waht I have been using so far for individual features:</p>
<p>For the feature #1:
<a href="http://www.sascha-frank.com/Faq/tables_six.html" rel="nofollow noreferrer">http://www.sascha-frank.com/Faq/tables_six.html</a></p>
<p>For the feature #2:
<a href="http://texblog.org/2011/04/19/highlight-table-rowscolumns-with-color/" rel="nofollow noreferrer">http://texblog.org/2011/04/19/highlight-table-rowscolumns-with-color/</a></p>
<p>For the feature #3:
<a href="https://tex.stackexchange.com/a/46393">https://tex.stackexchange.com/a/46393</a></p>
<p>But I couldn't manage to make one piece of code that can adjust all of these features together. Is this possible in LaTeX? Thanks in advance.</p>
<p>EDIT:</p>
<p>So for example I use this code to have a table that I can specify width of the columns and change the color of a specific row and/or column:</p>
<pre><code>\documentclass[a4paper]{article}
\usepackage{array}
% to change color of row and column
\usepackage{color, colortbl}
\definecolor{mColor1}{rgb}{0.9,0.9,0.9}
\begin{document}
\newcolumntype{a}{>{\columncolor{mColor1}}l}
\newcolumntype{L}[1]{>{\raggedright\arraybackslash}p{#1}}
\newcolumntype{C}[1]{>{\centering\arraybackslash}p{#1}}
\newcolumntype{R}[1]{>{\raggedleft\arraybackslash}p{#1}}
\begin{table}[h]
\caption{table}
\centering
\begin{tabular}{| a | L{1.2cm} | C{1.5cm} | R{3cm} |}
\hline
\rowcolor{mColor1}
1 & 2 \newline 2.1 & 3 & 4 \\
\hline
1 & 2 & 3 & 4 \\
\hline
1 & 2 & 3 & 4 \\
\hline
\end{tabular}
\end{table}
\end{document}
</code></pre>
<p>However, I don't know:</p>
<ol>
<li>How to change the color of a column that has a specific width size (how to use color and size together)?</li>
<li>How to specify height of a row? and be able to change its color?</li>
<li>How to change the vertical and horizontal alignments for the columns/row that has specific color and size?</li>
</ol>
<p>Thanks in advance</p>
| 0non-cybersec
| Stackexchange |
SMTP mail server with postfix/dovecot does not require authentication. <p>I have a mail server with postfix and dovecot with which I'm able to receive mail at my email address.</p>
<p>When I'm connecting from a remote mail client via POP3 it is saying authentication failed even though I am giving the right password.</p>
<p>But still the mail client is able to send mail from my account without proper authentication.</p>
<p>How would I configure it so that authentication is required to send email?</p>
<p>The output for postconf -n writes - </p>
<pre><code>alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = all
mailbox_command =
mailbox_size_limit = 0
mydestination = example.com, mail.example.com, localhost.example.com, localhost
myhostname = mail.example.com
mynetworks = 127.0.0.0/8
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = cyrus
smtpd_sender_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining
smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt
smtpd_tls_key_file = /etc/ssl/private/smtpd.key
smtpd_tls_loglevel = 1
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
</code></pre>
<p>Thanks</p>
| 0non-cybersec
| Stackexchange |
My sister and her husband remodeled their bathroom and had some problems when it came to the lighting.... | 0non-cybersec
| Reddit |
How can I modify the settings of the margin item in a list?. <p>In the <code>article</code> class I have this section of code</p>
<pre><code>\if@twocolumn
\setlength\leftmargini {2em}
\else
\setlength\leftmargini {2.5em}
\fi
\leftmargin \leftmargini
\setlength\leftmarginii {2.2em}
\setlength\leftmarginiii {1.87em}
\setlength\leftmarginiv {1.7em}
\if@twocolumn
\setlength\leftmarginv {.5em}
\setlength\leftmarginvi {.5em}
\else
\setlength\leftmarginv {1em}
\setlength\leftmarginvi {1em}
\fi
\setlength \labelsep {.5em}
\setlength \labelwidth{\leftmargini}
\addtolength\labelwidth{-\labelsep}
\@beginparpenalty -\@lowpenalty
\@endparpenalty -\@lowpenalty
\@itempenalty -\@lowpenalty
\renewcommand\theenumi{\@arabic\c@enumi}
\renewcommand\theenumii{\@alph\c@enumii}
\renewcommand\theenumiii{\@roman\c@enumiii}
\renewcommand\theenumiv{\@Alph\c@enumiv}
\newcommand\labelenumi{\theenumi.}
\newcommand\labelenumii{(\theenumii)}
\newcommand\labelenumiii{\theenumiii.}
\newcommand\labelenumiv{\theenumiv.}
\renewcommand\p@enumii{\theenumi}
\renewcommand\p@enumiii{\theenumi(\theenumii)}
\renewcommand\p@enumiv{\p@enumiii\theenumiii}
\newcommand\labelitemi{\textbullet}
\newcommand\labelitemii{\normalfont\bfseries \textendash}
\newcommand\labelitemiii{\textasteriskcentered}
\newcommand\labelitemiv{\textperiodcentered}
</code></pre>
<p>that set the margins and type of items for the diferent list environments.</p>
<p>How can I modify this to obtain a first margin item equal to <code>0pt</code>?</p>
| 0non-cybersec
| Stackexchange |
Generating maintenance database from maintenance tables currently in master and msdb. <p>I want to create a maintenance database that i can clean up master and msdb, i am trying to collect all the table info from master and msdb that are not Microsoft tables, bearing in mind that some instances might have different structures due to different requirements. I am getting an error on the code </p>
<blockquote>
<p>Msg 102, Level 15, State 1, Line 27
Incorrect syntax near '@ServerName'</p>
</blockquote>
<p>is there maybe a simpler way of doing this? </p>
<pre><code>DECLARE servers_cursor CURSOR
FOR
-- select * from environment
-- select * from DatabaseInfo
select distinct LinkedserverName,Environment,ServerUse
from SQLMonitor.dbo.Environment
join master..sysservers on srvname COLLATE DATABASE_DEFAULT = LinkedserverName COLLATE DATABASE_DEFAULT
where ServerUse = 'DEV'
--and IncludeBackupsStats = 1
order by LinkedServerName
OPEN servers_cursor
DECLARE @Servername varchar(255)
DECLARE @sql varchar(8000)
DECLARE @Environment char(4)
DECLARE @ServerUse varchar(15)
FETCH NEXT FROM servers_cursor INTO @ServerName,@Environment,@ServerUse
WHILE (@@FETCH_STATUS = 0)
BEGIN
PRINT @ServerName
CREATE TABLE [_TempDetails_]
(DatabaseName sysname
,TableName sysname
,ActualCommand nvarchar(max))
INSERT INTO [TempTableScripts].dbo._TempDetails_
SELECT * FROM OPENQUERY(@ServerName, '
declare @TableNames table
(
DatabaseName sysname
, TableName sysname
)
insert @TableNames
EXEC sp_msforeachdb @command1 = ''use ?;
IF ''''?'''' IN (''''master'''',''''msdb'''')
BEGIN
SELECT ''''?'''', name from sys.tables T WHERE is_ms_shipped = 0
END'+'
select *, ''''SELECT TOP 1 * INTO ['''' + @ServerName + ''''_-_'''' + Databasename +''''_-_'''' + TableName +''''] FROM ['''' + @ServerName+''''].[''''+ Databasename + ''''].dbo.['''' + TableName + '''']''''
from @TableNames
')
--exec (@sql)
FETCH NEXT FROM servers_cursor INTO @ServerName,@Environment,@ServerUse
--PRINT @ServerName
END
CLOSE servers_cursor
DEALLOCATE servers_cursor
</code></pre>
| 0non-cybersec
| Stackexchange |
91-Year-Old Utah Woman Skydives With 4 Generations. | 0non-cybersec
| Reddit |
Get/List all windows event log events in the last n minutes in powershell. <p>After I encounter an error or issue, I'd like to quickly review events for the last several minutes to see if there is any helpful information. The trouble is, I don't know which particular log might have the events I'm looking for so I want to just show ALL of them. I want to use powershell because opening event viewer and creating a filter takes too long and the faster I can copy and paste a command into powershell, the fewer events I'll have to sift through. I don't want to have to note the exact time the event would have taken place, just a relative time.</p>
<p>I know how to get events from a <em>single</em> windows event log for the last n minutes, for example <code>Get-EventLog -LogName System -After (Get-Date).AddMinutes(-10) | Format-Table -AutoSize -Wrap</code>, but as the <a href="https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-eventlog?view=powershell-5.1#parameters" rel="nofollow noreferrer">documentation</a> says: </p>
<blockquote>
<p>-LogName<br>
Specifies the name of one event log. To find the log names use Get-EventLog -List. <strong>Wildcard characters are not permitted.</strong> This parameter is required.</p>
</blockquote>
<p>So my thought is that I could iterate through all log names, runnin <code>EventLog</code> on each of them and concatenating the results.</p>
| 0non-cybersec
| Stackexchange |
Moving datacenter turned into a long weekend. So yesterday we were getting ready to shutdown our datacenter and move to a new building. I got a call saying that I should head to the new building to check out the sever room. The floor above us had a flood and it was raining in the server room directly below. This obviously postponed our move until we find a solution to prevent this from happening. One lesson I learned from this is to check what is on the floor above you.
EDIT: So we had a router shipped from another office to set up a dmvpn temporarily. The only thing we are concerned about now is bandwidth. Some of the applications our users run require access to large files on the LAN. Disaster clean up crew has fans and dehumidifiers running until we open Monday. | 0non-cybersec
| Reddit |
jQuery Esc Keypress bind. <p>I'd like to add a bind in which the <kbd>Esc</kbd> key will slide my panel back up. Here is my jQuery code.</p>
<pre><code>$(document).ready(function () {
$(".port-link-container").click(function () {
$("div.slider-panel").slideUp("slow");
});
$("#wr").click(function () {
$('html, body').animate({ scrollTop: 450 }, 'slow');
$("div#wr-large").slideDown("slow");
});
$("#sema").click(function () {
$("div#sema-large").slideDown("slow");
});
$(".slider-close").click(function () {
$('html, body').animate({ scrollTop: 0 }, 'slow');
$("div.slider-panel").slideUp("slow");
});
});
</code></pre>
| 0non-cybersec
| Stackexchange |
I am ashamed to admit the following occurred during project management training today:. We had begun a section on 'change management', and to prove his point, the facilitator challenged us to try to name one thing that does not involve change.
I proudly shouted out "A CREDIT CARD!"
He looks at me and asks, "A... credit card?"
I reply, "Yes. There is no change when paying with a credit card..."
| 0non-cybersec
| Reddit |
Home Integration. | 0non-cybersec
| Reddit |
5 Myths About Domestic Abuse Everyone Believes. | 0non-cybersec
| Reddit |
How to use spot instance with amazon elastic beanstalk?. <p>I have one infra that use amazon elastic beanstalk to deploy my application.
I need to scale my app adding some spot instances that EB do not support.</p>
<p>So I create a second autoscaling from a launch configuration with spot instances.
The autoscaling use the same load balancer created by beanstalk.</p>
<p>To up instances with the last version of my app, I copy the user data from the original launch configuration (created with beanstalk) to the launch configuration with spot instances (created by me).</p>
<p>This work fine, but:</p>
<ol>
<li><p>how to update spot instances that have come up from the second autoscaling when the beanstalk update instances managed by him with a new version of the app?</p>
</li>
<li><p>is there another way so easy as, and elegant, to use spot instances and enjoy the benefits of beanstalk?</p>
</li>
</ol>
<p><strong>UPDATE</strong></p>
<p>Elastic Beanstalk add support to spot instance since 2019... see:
<a href="https://docs.aws.amazon.com/elasticbeanstalk/latest/relnotes/release-2019-11-25-spot.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/elasticbeanstalk/latest/relnotes/release-2019-11-25-spot.html</a></p>
| 0non-cybersec
| Stackexchange |
How to install and use obfuscar?. <p>I just finished my C# project(WPF), but now I meet problems on using "obfuscar" (another applicaion would be welcome, if easier to use).</p>
<p>Of course I looked already on internet for it, but didn't find a documentation "for newbies"...</p>
<p>I also tried to use BasicExempleExe provided with obfuscar from github, then some questions remaining :</p>
<ul>
<li>I see no install file for obfuscar, so already for 1st step I think I missed something?</li>
<li>I see in Example directory a file obfuscar.xml. I understood what is that file for, but I don't see at what level it is called.</li>
</ul>
<p>Can please some guy be of any help?It is not such a big project I am doing now, but I would like to learn how to do that, and since yesterday I could not understand anything, that's why I finally decided to post here.</p>
| 0non-cybersec
| Stackexchange |
[Story] How do I find motivation to keep going in my situation?. I'll note now: Please do not just tell me that people have their own pace, because that's just not, advice that ever gave me comfort. You'll see why hopefully when I explain things.
So I graduated high school in 2013, currently 24. Wanted to teach Japanese, mom lost her job around this time so I could not go to the good uni I got into. I went to community college planning to transfer after making it through.
Well meanwhile, my home life quickly disintegrated into shit with my now brother in law having moved in, become emotionally abusive and not quite physically abusive under Florida law (yes we're fucked) but pretty up there. He was emotionally and physically harming my nephew and emotionally harming me both directly and indirectly. Sister wasn't receiving abuse so she did nothing. Point is, I needed a quicker way to become independent than this commuter life looked to promise.
So I went for trade school for IT, not knowing that IT is apparently the one thing that trade schools ofer that won't allow you to get hired. I learned this too late and ultimately wasted a year with the nine month school and 5 month contract job I got from it but got no offers after that despite looking fir a while, due to having no degree.
The one good thing that came of it, was that I found I liked working with technology, but looking down the sysadmin path, I didn't feel like it was something I actually wanted to do. Thankfully I worked the whole time I was at school, paying for school on my own so the loss was mine alone, though my parents gave me room/ board / drove me to and fro the whole time
Sorry this is kinda long, but it's to help you understand the length and dreariness of the pass thus far, I enrolled in community college for programming which I found enjoyable, and got good enough grades that I now have transferred into UMich . . .
Well, the big thing now is due to all of these twists nad turns in my story, frankly I'm tired, burnt out, ridden with anxiety that was sealed in my core from being in an abusive house hold , and I didn't mention this before but my mom coddles my autistic little sister, The prospect of even facing them again fills me with anxiety but I won't have a choice. Got no one to really turn to. They use that to guilt me into being closer to them but they put me through so much.
More importantly though, I am looking for advice on what to do about my burnout situation, I am surrounde by people a good 6 years younger than me who I can't connect with, my burn out makes it hard for me to enjoy activites, my burnout and depression makes me work really slow so having time to do fun things is almost non existent. Being in an Ivy school also just kinda means having lots of work. I see my close adult friends working their jobs and I just, want nothing more that to be at that point, wishing I was there now instead of being stuck in this pool of uncertainty, clawing my way through a bachelors
I have always been isolated from peers wanting nothing more that to connect with them but this situation has left me lonelier than ever if that was possible and I just, want to die kinda I'm so tired of pushing cause so little comes from it and I hate that I'm slow and fuck math. Any advice is appreciated greatly.
EDIT spelling | 0non-cybersec
| Reddit |
How to fix AddType or AddHandler problems. <p>I recently moved from an old Godaddy hosting account to a new Godaddy Cpanel hosting account.</p>
<p>The menus on the website are generated by using php include statements which worked on the old hosting account. However, on this new hosting the php include statement do not work & if you click on a link on the website the dialog to save a file open instead of the html link opening a webpage. The server is Deluxe Linux Hosting with cPanel running Apache php 5.3. This is the htaccess that worked on the old hosting account, How do i fix this problem?</p>
<pre><code>#simple ETag
FileETag MTime Size
# Turn on the Expires engine
ExpiresActive On
# Expires after a month client accesses the file
ExpiresByType image/jpeg A2592000
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/x-icon A2592000
ExpiresByType text/plain A2592000
# Good for one week
ExpiresByType application/x-javascript M604800
ExpiresByType text/css M604800
ExpiresByType text/html M604800
# Compress entire website
<IfModule deflate_module>
# Enable compression for the following file types.
AddOutputFilterByType \
DEFLATE \
application/javascript \
text/css \
text/html \
text/javascript \
text/plain \
text/xml
</IfModule>
#
AddType application/x-httpd-php .php .htm .html
AddHandler x-httpd-php .php .htm .html
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</code></pre>
| 0non-cybersec
| Stackexchange |
What is the r/Games culture?. Let me preface this question with an apology just in case this has already been discussed at length. I promise I did a search and did not come up with a specific answer.
Now, what I'm asking very plainly is "what type of gamers make up the bulk of r/Games? What are our prevailing interests?"
Are we mostly PC gamers? Do we favor consoles? If so, which consoles? And regardless of how we consume our games, what are the prevailing genre preferences?
What type of information is most valuable to this group? I'm aware of whats allowed, but what do we prefer to read or watch?
Or are we just a mixed bag of gamers with a hugely diverse taste in games and the information that surrounds them (reviews, news, editorials.)?
Feel free to answer from the perspective of the many (if you have a good pulse for the group) or just provide your own interests. | 0non-cybersec
| Reddit |
A mountain of moss; Catskills, New York [OC] [1920x1080]. | 0non-cybersec
| Reddit |
how do I set height of container DIV to 100% of window height?. <p>I have a couple of problems with my container DIV. For one it is not recognising the height of my content correctly (I would have thought it would extend beyond the bottom of the main content and sidebar, but it isn't). You can see what I mean on <a href="http://salliannputman.com/test/index.html" rel="noreferrer">this page</a>.</p>
<p>I would also like the container DIV to always fill the available height of the screen/window. I have tried setting it to <code>min-height:100%</code>, but this didn't have any effect.</p>
<p>Here is the CSS I am using for the container DIV:</p>
<pre><code>#container {
padding: 0;
margin: 0;
background-color: #292929;
width: 1200px;
margin: 0 auto;
min-height: 100%;
}
</code></pre>
<p>I would be grateful for any help to get this working.</p>
<p>Thanks,</p>
<p>Nick</p>
| 0non-cybersec
| Stackexchange |
Can't fetch the latest ubuntu upgrade on ubuntu 11.04. <p>I just started up an old laptop with an old version of ubuntu (11.04). It won't let me download applications (it throws some Untrusted sources error), so I'm trying to update to a new version.</p>
<p>In <code>System > Administration</code> I have discovered application called Update manager.<br>
<img src="https://i.stack.imgur.com/C2Vcs.png" alt="update manager screen"><br>
I have clicked Upgrade, but this crap has popped out:<br>
<img src="https://i.stack.imgur.com/sWbsb.png" alt="Failed to fetch error"><br>
I have no network problems. The only explanation is that the ubuntu update servers have changed their address while this computer was offline.</p>
<p>How can I troubleshoot this problem and proceed the upgrade?</p>
| 0non-cybersec
| Stackexchange |
Confessions of a Serial Reposter. | 0non-cybersec
| Reddit |
Why is the continuous Galerkin Finite Element Method a poor choice for the inverse problem for the Navier-Lame equation?. <p>I work in a field (elasticity reconstruction) that frequently uses standard Finite Element methods to solve the first order PDE, where we are given u and solve for mu and lambda:</p>
<p>$$
(\mu(u_{i,j} + u_{j,i}))_{,j} + (\lambda~div~\mathbf{u})_{,i} = -\rho \omega^2\mathbf{u}_{i}
$$</p>
<p>known as the Navier-Lame equation. Here we try to solve the "inverse" case (given u solve for mu and lambda) which is a first-order PDE (while the equation is more commonly solved for u which is a second order PDE).</p>
<p>The results overall have been a bit underwelming. Over the past year I was able to speak briefly about this problem to four quite prominent applied mathematicians. Their consensus was that standard FEM, while appropriate for elliptic PDEs of second order, is an inappropriate and unstable mathematical basis for a first order PDE, while better solutions might be Finite Volume or discontinuous Galerkin. </p>
<p>All I remember of the discussions is that first order PDEs have characteristic curves and can handle jumps, while finite elements, like second order PDEs, are smooth in C1 throughout.</p>
<p>I cannot find any supporting information for this viewpoint in a text. Can anyone explain why standard FEM is a poor choice for a first order PDE? Or is this not right?</p>
| 0non-cybersec
| Stackexchange |
Google Webmaster Tools suddenly shows 1379 crawl errors. <p>Just checking GWT today and it's suddenly showing 1,379 crawl errors (404) but for the most non-sensical URL's that don't exist, for example...</p>
<pre><code>www.example.com/services/newsletters/services/contact
</code></pre>
<p>The only changes I've made recently have been setting the preferred domain to 'www' and updating the .htaccess file to redirect to 'www' as Google was showing some results with 'www' and some without.</p>
<p>This is my .htaccess file</p>
<pre><code><IfModule mod_rewrite.c>
RewriteEngine On
# Trailing slash enforcement
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteRule ^(.*)$ http://www.example.com/$1/ [L,R=301]
# Returns WWW
RewriteCond %{HTTP_HOST} ^example.com
RewriteRule (.*) http://www.example.com/$1 [R=301,L]
# Removes index.php
RewriteCond $1 !\.(gif|jpe?g|png)$ [NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php/$1 [L]
#Redirects old static .html pages to EE CMS
Redirect 301 /services.html /services
Redirect 301 /take-away.html /services/take-away
Redirect 301 /blog.html /blog
Redirect 301 /about.html /about
Redirect 301 /pin-up-studio.html /pin-up-studio
Redirect 301 /press.html /press
Redirect 301 /links.html /links
Redirect 301 /newsletter.html /newsletter
Redirect 301 /events.html /events
Redirect 301 /contact.html /contact
Redirect 301 /terms-and-conditions.html /terms-and-conditions
Redirect 301 /parties.html /services/party-package
Redirect 301 /gallery.html /gallery
Redirect 301 /bridal.html /services/bridal-styling
Redirect 301 /404.html /404
</IfModule>
</code></pre>
<p>Any ideas what I'd done wrong?</p>
<p><strong>EDIT</strong></p>
<p>So another 379 crawl errors have appeared in the last day. When I check the 'linked from' status it says it is being linked from the website itelf. An example is this URL is not found...</p>
<pre><code>http://www.example.com/services/contact.html/bridal-styling/bridal-styling/services/party-package/take-away/contact/pop-up-parlour/bridal-styling
</code></pre>
<p>...and lists these 2 URL's as the 'linked from'</p>
<pre><code>http://example.com/services/contact.html/bridal-styling/bridal-styling/services/party-package/take-away/contact/pop-up-parlour
http://www.example.com/services/contact.html/bridal-styling/bridal-styling/services/party-package/take-away/contact/pop-up-parlour/
</code></pre>
<p>As I said before the only changes I've made recently have been setting the preferred domain to 'www' and updating the .htaccess file to redirect to 'www' as Google was showing some results with 'www' and some without.</p>
<p>My .htaccess file is as above.</p>
<p>It seems the bots seem to have got stuck in a loop when crawling the site? Not sure why it's getting hung up on the www and non www as I've specifically stated in GWT to use www.</p>
| 0non-cybersec
| Stackexchange |
Streetwear is not a set of brands.. I'm going to ramble.
I've noticed that shit like Hypebeast, complex with their fuck nigga lists and shit. Have duped us all into thinking that Supreme is "streetwear" ,or that Stussy is "Streetwear". In reality everything is streetwear. Streetwear is clothes that fit your lifestyle. That's why every little raggedy startup feels the need to have some bullshit story about them being rooted in skateboarding etc. The clothes don't make you skate better. Streetwear is clothes that fit your lifestyle.
If a dude who knows he's about to tag a building dresses in a black Cartthart jacket, freshjive pants and a pair of new eras he's not going for an aesthetic. He's wearing what fits his lifestyle , and culture basically determines whether that's cool or not. You'll never be as cool as any of the people rooted in these brands if you're putting your culture behind the clothes. | 0non-cybersec
| Reddit |
Really cool in depth dissection of a Photograph taken during the superbowl.. | 0non-cybersec
| Reddit |
This old car. | 0non-cybersec
| Reddit |
To name Polish (Poland). | 0non-cybersec
| Reddit |
My first wood burning project. I made a lotr jewlerly cabinet for my wife.. | 0non-cybersec
| Reddit |
What are your absolute favorite character names you've created?. I've had quite a few that I've been very proud of, and I'm always quite tickled when I see super creative or raunchy names. Give me your best, and worst. | 0non-cybersec
| Reddit |
This stupid clock at my work.. | 0non-cybersec
| Reddit |
Numpy: Get random set of rows from 2D array. <p>I have a very large 2D array which looks something like this:</p>
<pre><code>a=
[[a1, b1, c1],
[a2, b2, c2],
...,
[an, bn, cn]]
</code></pre>
<p>Using numpy, is there an easy way to get a new 2D array with, e.g., 2 random rows from the initial array <code>a</code> (without replacement)?</p>
<p>e.g.</p>
<pre><code>b=
[[a4, b4, c4],
[a99, b99, c99]]
</code></pre>
| 0non-cybersec
| Stackexchange |
Overwatch - End of 2016 Discussions. #[Overwatch](https://en.wikipedia.org/wiki/Overwatch_(video_game\))
----------------------------------------
> Overwatch is a team-based multiplayer first-person shooter video game developed and published by Blizzard Entertainment. It was released in May 2016 for Microsoft Windows, PlayStation 4, and Xbox One.
-------------------------------------------------------------
**Prompts**
* Is the gameplay fun?
* Are the different characters fun to play?
* Does the game have enough content?
^^^^^^^^^The ^^^^^^^^^most ^^^^^^^^^horny ^^^^^^^^^community ^^^^^^^^^ever
---
***[View all End of 2016 discussions game discussions](https://www.reddit.com/r/Games/comments/5fjyam/end_of_2016_discussions_megathread/)*** | 0non-cybersec
| Reddit |
Sphinx and Markdown .md links. <p>I'm trying to convert Markdown files to html using Sphinx but am having trouble getting <code>[links](another.md)</code> to be translated to <code><a href="another.html">links</a></code>, rather the extension of the target remains the original <code>.md</code> and appears as <code><a href="another.md">links</a></code>.</p>
<p>I've created a simple example...</p>
<p><strong>test.md</strong></p>
<pre><code>[Test link](https://www.stackoverflow.com)
[Another Markdown doc](another.md)
</code></pre>
<p><strong>another.md</strong></p>
<pre><code># Another test markdown
</code></pre>
<p>Both files reside in the top level directory and I run <code>sphinx-quickstart</code> to create <code>conf.py</code>, accepting the defaults. I then modify <code>conf.py</code> to have...</p>
<pre><code>from recommonmark.parser import CommonMarkParser
extensions = [
'sphinx.ext.autodoc',
]
source_suffix = ['.rst', '.md']
source_parsers = {
'.md': CommonMarkParser,
}
</code></pre>
<p>The resulting html files are produced but the link from <code>test.html</code> to <code>another.html</code> is not correct and appears as...</p>
<p><strong>test.html</strong> </p>
<pre><code>...
<p><a class="reference external" href="https://thefloow.com">Test link</a></p>
<p><a class="reference external" href="another.md">A real test</a></p>
...
</code></pre>
<p>...and points to <code>another.md</code> rather than <code>another.html</code>. I asked a few days ago and was pointed towards using recommonmark's <code>AutoStructify</code> (see thread <a href="https://stackoverflow.com/questions/52429549/sphinx-documentation-and-links-to-markdown/52430829">here</a>) but that didn't work and on further digging/reading it turns out that <a href="https://github.com/rtfd/recommonmark" rel="noreferrer"><code>enable_auto_doc_ref</code> is now deprecated</a> and <a href="https://github.com/rtfd/recommonmark/issues/85#issuecomment-327810549" rel="noreferrer"><code>.md</code> links are added as <code>:any:</code> and should be handled by Sphinx</a>.</p>
<p>But I don't understand why this isn't working or what I should do to resolve it. Any suggestions would be very much appreciated.</p>
<p><strong>EDIT</strong> </p>
<p>Versions are as follows</p>
<ul>
<li>Sphinx 1.8.0</li>
<li>recommonmark 0.4.0</li>
</ul>
| 0non-cybersec
| Stackexchange |
How do I figure out whether my process is CPU bound, I/O bound, Memory bound or . <p>I'm trying to speed up the time taken to compile my application and one thing I'm investigating is to check what resources, if any, I can add to the build machine to speed things up. To this end, how do I figure out if I should invest in more CPU, more RAM, a better hard disk or whether the process is being bound by some other resource? I already saw this (<a href="https://stackoverflow.com/questions/3156334/how-to-check-if-app-is-cpu-bound-or-memory-bound">How to check if app is cpu-bound or memory-bound?</a>) and am looking for more tips and pointers.</p>
<p>What I've tried so far:</p>
<ul>
<li><p>Time the process on the build machine vs. on my local machine. I found that the build machine takes twice the time as my machine. </p></li>
<li><p>Run "Resource Monitor" and look at the CPU usage, Memory usage and Disk usage while the process is running - while doing this, I have trouble interpreting the numbers, mainly because I don't understand what each column means and how that translates to a Virtual Machine vs. a physical box and what it means with multi-CPU boxes.</p></li>
</ul>
| 0non-cybersec
| Stackexchange |
Chair vs Cane. | 0non-cybersec
| Reddit |
Why is the Black-Scholes PDE called degenerate. <p>I am working in Mathematical Finance and know that the Black-Scholes PDE is degenerate at $x=0$ (I assumed that this was because at 0 the convection and diffusion terms vanish and one is left $V_{t} = rV$). </p>
<p>Is there a more precise way of defining this ?</p>
<p>Secondly, is there a reason that one needs weighted spaces to consider finite element methods other than the fact that the weights arise naturally when deriving the weak formulation? </p>
| 0non-cybersec
| Stackexchange |
Google Analytics: Need to understand some data in user flow. <p>I just started using Google Analytics, for learning purpose, I'm a little obsessed with some data discrepancy, hope someone can explain to me.
I was checking user flow by landing page
<a href="https://i.stack.imgur.com/caspW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/caspW.png" alt="enter image description here" /></a></p>
<p>Here it shows there are 879 sessions landed on this page,
among them 814 are without any queries
<a href="https://i.stack.imgur.com/iaeF2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iaeF2.png" alt="enter image description here" /></a></p>
<p>However, on Behavior -> Site Content -> Landing Pages, there are 860 sessions for the URL without any queries, as the below picture shows
<a href="https://i.stack.imgur.com/L9zHB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/L9zHB.png" alt="enter image description here" /></a></p>
<p>Another thing I don't understand is,
<a href="https://i.stack.imgur.com/RHEt0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RHEt0.png" alt="enter image description here" /></a></p>
<p>As the above picture shows, the same URL is regarded as different landing page if there are queries, why would GA do this? And, as the below picture shows, among the 860 sessions that landed on the URL without any queries, a lot are actually referred by Facebook. Shouldn't all Facebook referred URLs have queries like <code>fbcid=xxxx</code>?</p>
<p><a href="https://i.stack.imgur.com/a35EG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/a35EG.png" alt="enter image description here" /></a></p>
| 0non-cybersec
| Stackexchange |
/u/abittooshort explains the dangers of considering yourself 'above' cheating.. | 0non-cybersec
| Reddit |
3D visualization of our local stellar neighborhood [OC]. | 0non-cybersec
| Reddit |
Lolo Jones reveals that she was paid $742 from the Bobsled Federation for her 7 months of training, including a gold and silver bonus.. | 0non-cybersec
| Reddit |
Good, simple reasons for having multiple environments. <p>Throughout my career I had worked at companies that had a collection of different environments for different purposes. We always had more or less our desktop environment, a test environment, a QA environment, a staging environment and a production environment. This went for both servers/applications and any data sources we were using.</p>
<p>When I started at my current company I found that 90% of the apps were either developed on a desktop environment against production data sources or developed directly on the production server depending on the platform. This wasn't particularly surprising, as I was hired in part to make changes to improve the way the development team functioned, which was clear from my interview process. We slowly started to turn the philosophy and pretty soon, most of the apps could be run in either a desktop, test or production environment. Not too long after that staging came around as well.</p>
<p>Now most of our developers see the benefit of this methodology and defend it vigilantly. However, we have a number of legacy apps that never got migrated. We also have a number of legacy programmers who think of this as a waste of time. Unfortunately, we got lip service but never full buy-in from management. We got what we thought was a commitment to invest substantially in this about a year ago, but nothing materialized despite the considerable planning that we put into it. Now we are finding that we need more and more environments. We need help from the server/network administration teams for setup and we need participation from the business stakeholders to support the release cycle. We are at a place now where a project can function what reasonable developers would consider "normally" only if you have the right people on the project and the time to set up the proper environments.</p>
<p>I'd love to present a complete argument, but management really has no time and interest in hearing me out until there is a critical issue. I can't really articulate the benefits simply as it always just seemed second nature to me. I was wondering if there are any <strong>good, simple, irrefutable reasons for the separation of environments that would get managers lacking development experience to support this idea?</strong>. Are there any good resources/literature on the topic?</p>
| 0non-cybersec
| Stackexchange |
PsBattle: These two strangers who coincidentally wore the same outfit. | 0non-cybersec
| Reddit |
How to customize the preview of Markdown in Pycharm?. <p>I am using the Pycharm. I want to write my notes in Markdown in Pycharm. And I have installed the plugin <strong>Markdown support</strong>. It works. However the font is ugly, so I want to customize it. </p>
<p><a href="https://i.stack.imgur.com/Izf9G.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Izf9G.png" alt="enter image description here"></a></p>
<p>In settings, there is a place where the user can write his custom css. </p>
<p><a href="https://i.stack.imgur.com/8huuO.png" rel="noreferrer"><img src="https://i.stack.imgur.com/8huuO.png" alt="enter image description here"></a></p>
<p>My css code is as following. But it didn't work. And I tried to restart pycharm. It didn't work! The default.css will be at the end of this post. My OS is ubuntu 17.04 and the pycharm is community 17.02. The Noto Sans CJK SC has been installed and also supports my language (Chinese). Thanks a lot for your time and any advice.</p>
<pre><code>@font-face {
font-family: "Noto Sans CJK SC";
}
body {
background-color: white;
-webkit-text-size-adjust: 100%;
-fx-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
text-size-adjust: 100%;
color: #333;
font-family: "Noto Sans CJK SC";
font-size: 16px;
line-height: 1.6;
word-wrap: break-word;
}
a {
background-color: transparent;
}
a:active,
a:hover {
outline: 0;
}
strong {
font-weight: bold;
}
h1 {
font-size: 2em;
margin: 0.67em 0;
}
img {
border: 0;
}
hr {
box-sizing: content-box;
height: 0;
}
pre {
overflow: auto;
}
code,
kbd,
pre {
font-family: "Roboto Mono";
font-size: 1em;
}
input {
color: inherit;
font: inherit;
margin: 0;
}
html input[disabled] {
cursor: default;
}
input {
line-height: normal;
}
input[type="checkbox"] {
box-sizing: border-box;
padding: 0;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
td,
th {
padding: 0;
}
body * {
box-sizing: border-box;
}
input {
font: 13px/1.4 "Noto Sans CJK SC";
}
a {
color: #4078c0;
text-decoration: none;
}
a:hover,
a:active {
text-decoration: underline;
}
hr {
height: 0;
margin: 15px 0;
overflow: hidden;
background: transparent;
border: 0;
border-bottom: 1px solid #ddd;
}
hr:before {
display: table;
content: "";
}
hr:after {
display: table;
clear: both;
content: "";
}
h1,
h2,
h3,
h4,
h5,
h6 {
margin-top: 15px;
margin-bottom: 15px;
line-height: 1.1;
}
h1 {
font-size: 30px;
}
h2 {
font-size: 21px;
}
h3 {
font-size: 16px;
}
h4 {
font-size: 14px;
}
h5 {
font-size: 12px;
}
h6 {
font-size: 11px;
}
blockquote {
margin: 0;
}
ul,
ol {
padding: 0;
margin-top: 0;
margin-bottom: 0;
}
ol ol,
ul ol {
list-style-type: lower-roman;
}
ul ul ol,
ul ol ol,
ol ul ol,
ol ol ol {
list-style-type: lower-alpha;
}
dd {
margin-left: 0;
}
code {
font-family: "Roboto Mono", monospace;
font-size: 12px;
}
pre {
margin-top: 0;
margin-bottom: 0;
font: 12px "Roboto Mono", monospace;
}
.octicon {
font: normal normal normal 16px/1 NotoSansCJKSC;
display: inline-block;
text-decoration: none;
text-rendering: auto;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.octicon-link:before {
content: '\f05c';
}
.markdown-body > *:first-child {
margin-top: 0 !important;
}
.markdown-body > *:last-child {
margin-bottom: 0 !important;
}
.anchor {
position: absolute;
top: 0;
left: 0;
display: block;
padding-right: 6px;
padding-left: 30px;
margin-left: -30px;
}
.anchor:focus {
outline: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
position: relative;
margin-top: 1em;
margin-bottom: 16px;
font-weight: bold;
line-height: 1.4;
}
h1 .octicon-link,
h2 .octicon-link,
h3 .octicon-link,
h4 .octicon-link,
h5 .octicon-link,
h6 .octicon-link {
display: none;
color: #000;
vertical-align: middle;
}
h1:hover .anchor,
h2:hover .anchor,
h3:hover .anchor,
h4:hover .anchor,
h5:hover .anchor,
h6:hover .anchor {
padding-left: 8px;
margin-left: -30px;
text-decoration: none;
}
h1:hover .anchor .octicon-link,
h2:hover .anchor .octicon-link,
h3:hover .anchor .octicon-link,
h4:hover .anchor .octicon-link,
h5:hover .anchor .octicon-link,
h6:hover .anchor .octicon-link {
display: inline-block;
}
h1 {
padding-bottom: 0.3em;
font-size: 2.25em;
line-height: 1.2;
border-bottom: 1px solid #eee;
}
h1 .anchor {
line-height: 1;
}
h2 {
padding-bottom: 0.3em;
font-size: 1.75em;
line-height: 1.225;
border-bottom: 1px solid #eee;
}
h2 .anchor {
line-height: 1;
}
h3 {
font-size: 1.5em;
line-height: 1.43;
}
h3 .anchor {
line-height: 1.2;
}
h4 {
font-size: 1.25em;
}
h4 .anchor {
line-height: 1.2;
}
h5 {
font-size: 1em;
}
h5 .anchor {
line-height: 1.1;
}
h6 {
font-size: 1em;
color: #777;
}
h6 .anchor {
line-height: 1.1;
}
p,
blockquote,
ul,
ol,
dl,
table,
pre {
margin-top: 0;
margin-bottom: 16px;
}
hr {
height: 4px;
padding: 0;
margin: 16px 0;
background-color: #e7e7e7;
border: 0 none;
}
ul,
ol {
padding-left: 2em;
}
ul ul,
ul ol,
ol ol,
ol ul {
margin-top: 0;
margin-bottom: 0;
}
li > p {
margin-top: 16px;
}
dl {
padding: 0;
}
dl dt {
padding: 0;
margin-top: 16px;
font-size: 1em;
font-style: italic;
font-weight: bold;
}
dl dd {
padding: 0 16px;
margin-bottom: 16px;
}
blockquote {
padding: 0 15px;
color: #777;
border-left: 4px solid #ddd;
}
blockquote > :first-child {
margin-top: 0;
}
blockquote > :last-child {
margin-bottom: 0;
}
table {
display: block;
width: 100%;
overflow: auto;
word-break: normal;
word-break: keep-all;
}
table th {
font-weight: bold;
}
table th,
table td {
padding: 6px 13px;
border: 1px solid #ddd;
}
table tr {
background-color: #fff;
border-top: 1px solid #ccc;
}
img {
max-width: 100%;
box-sizing: border-box;
}
code {
padding: 0;
padding-top: 0.2em;
padding-bottom: 0.2em;
margin: 0;
font-size: 85%;
background-color: rgba(0, 0, 0, 0.04);
border-radius: 3px;
}
code:before,
code:after {
letter-spacing: -0.2em;
content: "\00a0";
}
pre > code {
padding: 0;
margin: 0;
font-size: 100%;
word-break: normal;
white-space: pre;
background: transparent;
border: 0;
}
.highlight {
margin-bottom: 16px;
}
.highlight pre,
pre {
padding: 16px;
overflow: auto;
font-size: 85%;
line-height: 1.45;
background-color: #f7f7f7;
border-radius: 3px;
}
.highlight pre {
margin-bottom: 0;
word-break: normal;
}
pre {
word-wrap: normal;
}
pre code {
display: inline;
max-width: initial;
padding: 0;
margin: 0;
overflow: initial;
line-height: inherit;
word-wrap: normal;
background-color: transparent;
border: 0;
}
pre code:before,
pre code:after {
content: normal;
}
kbd {
display: inline-block;
padding: 3px 5px;
font-size: 11px;
line-height: 10px;
color: #555;
vertical-align: middle;
background-color: #fcfcfc;
border: solid 1px #ccc;
border-bottom-color: #bbb;
border-radius: 3px;
box-shadow: inset 0 -1px 0 #bbb;
}
.pl-c {
color: #969896;
}
.pl-c1,
.pl-s .pl-v {
color: #0086b3;
}
.pl-e,
.pl-en {
color: #795da3;
}
.pl-s .pl-s1,
.pl-smi {
color: #333;
}
.pl-ent {
color: #63a35c;
}
.pl-k {
color: #a71d5d;
}
.pl-pds,
.pl-s,
.pl-s .pl-pse .pl-s1,
.pl-sr,
.pl-sr .pl-cce,
.pl-sr .pl-sra,
.pl-sr .pl-sre {
color: #183691;
}
.pl-v {
color: #ed6a43;
}
.pl-id {
color: #b52a1d;
}
.pl-ii {
background-color: #b52a1d;
color: #f8f8f8;
}
.pl-sr .pl-cce {
color: #63a35c;
font-weight: bold;
}
.pl-ml {
color: #693a17;
}
.pl-mh,
.pl-mh .pl-en,
.pl-ms {
color: #1d3e81;
font-weight: bold;
}
.pl-mq {
color: #008080;
}
.pl-mi {
color: #333;
font-style: italic;
}
.pl-mb {
color: #333;
font-weight: bold;
}
.pl-md {
background-color: #ffecec;
color: #bd2c00;
}
.pl-mi1 {
background-color: #eaffea;
color: #55a532;
}
.pl-mdr {
color: #795da3;
font-weight: bold;
}
.pl-mo {
color: #1d3e81;
}
kbd {
display: inline-block;
padding: 3px 5px;
font: 11px "Roboto Mono", monospace;
line-height: 10px;
color: #555;
vertical-align: middle;
background-color: #fcfcfc;
border: solid 1px #ccc;
border-bottom-color: #bbb;
border-radius: 3px;
box-shadow: inset 0 -1px 0 #bbb;
}
.task-list-item {
list-style-type: none;
}
.task-list-item + .task-list-item {
margin-top: 3px;
}
.task-list-item input {
margin: 0 0.35em 0.25em -0.6em;
vertical-align: middle;
}
:checked + .radio-label {
z-index: 1;
position: relative;
border-color: #4078c0;
}
span.user-del {
text-decoration: line-through;
}
::-webkit-scrollbar {
width: 12px;
height: 12px;
background-color: inherit;
}
::-webkit-scrollbar-thumb {
-webkit-border-radius: 10px;
border: 2px solid #f6f6f6;
background-color: #959595;
}
::-webkit-scrollbar-track {
background-color: #f6f6f6;
}
::-webkit-scrollbar-track:vertical {
-webkit-box-shadow: -1px 0 0px #ededed;
}
::-webkit-scrollbar-track:horizontal {
-webkit-box-shadow: 0 -1px 0px #ededed;
}
</code></pre>
<p>The default.css :</p>
<pre><code> /*
Adapted from https://github.com/sindresorhus/github-markdown-css
The MIT License (MIT)
Copyright (c) Sindre Sorhus <[email protected]> (sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
@font-face {
font-family: octicons-anchor;
src: url(data:font/woff;charset=utf-8;base64,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) format('woff');
}
body {
background-color: white;
-webkit-text-size-adjust: 100%;
-fx-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
text-size-adjust: 100%;
color: #333;
font-family: Helvetica, Arial, freesans, sans-serif;
font-size: 16px;
line-height: 1.6;
word-wrap: break-word;
}
a {
background-color: transparent;
}
a:active,
a:hover {
outline: 0;
}
strong {
font-weight: bold;
}
h1 {
font-size: 2em;
margin: 0.67em 0;
}
img {
border: 0;
}
hr {
box-sizing: content-box;
height: 0;
}
pre {
overflow: auto;
}
code,
kbd,
pre {
font-family: monospace, monospace;
font-size: 1em;
}
input {
color: inherit;
font: inherit;
margin: 0;
}
html input[disabled] {
cursor: default;
}
input {
line-height: normal;
}
input[type="checkbox"] {
box-sizing: border-box;
padding: 0;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
td,
th {
padding: 0;
}
body * {
box-sizing: border-box;
}
input {
font: 13px/1.4 Helvetica, arial, nimbussansl, liberationsans, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
}
a {
color: #4078c0;
text-decoration: none;
}
a:hover,
a:active {
text-decoration: underline;
}
hr {
height: 0;
margin: 15px 0;
overflow: hidden;
background: transparent;
border: 0;
border-bottom: 1px solid #ddd;
}
hr:before {
display: table;
content: "";
}
hr:after {
display: table;
clear: both;
content: "";
}
h1,
h2,
h3,
h4,
h5,
h6 {
margin-top: 15px;
margin-bottom: 15px;
line-height: 1.1;
}
h1 {
font-size: 30px;
}
h2 {
font-size: 21px;
}
h3 {
font-size: 16px;
}
h4 {
font-size: 14px;
}
h5 {
font-size: 12px;
}
h6 {
font-size: 11px;
}
blockquote {
margin: 0;
}
ul,
ol {
padding: 0;
margin-top: 0;
margin-bottom: 0;
}
ol ol,
ul ol {
list-style-type: lower-roman;
}
ul ul ol,
ul ol ol,
ol ul ol,
ol ol ol {
list-style-type: lower-alpha;
}
dd {
margin-left: 0;
}
code {
font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
font-size: 12px;
}
pre {
margin-top: 0;
margin-bottom: 0;
font: 12px Consolas, "Liberation Mono", Menlo, Courier, monospace;
}
.octicon {
font: normal normal normal 16px/1 octicons-anchor;
display: inline-block;
text-decoration: none;
text-rendering: auto;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.octicon-link:before {
content: '\f05c';
}
.markdown-body > *:first-child {
margin-top: 0 !important;
}
.markdown-body > *:last-child {
margin-bottom: 0 !important;
}
.anchor {
position: absolute;
top: 0;
left: 0;
display: block;
padding-right: 6px;
padding-left: 30px;
margin-left: -30px;
}
.anchor:focus {
outline: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
position: relative;
margin-top: 1em;
margin-bottom: 16px;
font-weight: bold;
line-height: 1.4;
}
h1 .octicon-link,
h2 .octicon-link,
h3 .octicon-link,
h4 .octicon-link,
h5 .octicon-link,
h6 .octicon-link {
display: none;
color: #000;
vertical-align: middle;
}
h1:hover .anchor,
h2:hover .anchor,
h3:hover .anchor,
h4:hover .anchor,
h5:hover .anchor,
h6:hover .anchor {
padding-left: 8px;
margin-left: -30px;
text-decoration: none;
}
h1:hover .anchor .octicon-link,
h2:hover .anchor .octicon-link,
h3:hover .anchor .octicon-link,
h4:hover .anchor .octicon-link,
h5:hover .anchor .octicon-link,
h6:hover .anchor .octicon-link {
display: inline-block;
}
h1 {
padding-bottom: 0.3em;
font-size: 2.25em;
line-height: 1.2;
border-bottom: 1px solid #eee;
}
h1 .anchor {
line-height: 1;
}
h2 {
padding-bottom: 0.3em;
font-size: 1.75em;
line-height: 1.225;
border-bottom: 1px solid #eee;
}
h2 .anchor {
line-height: 1;
}
h3 {
font-size: 1.5em;
line-height: 1.43;
}
h3 .anchor {
line-height: 1.2;
}
h4 {
font-size: 1.25em;
}
h4 .anchor {
line-height: 1.2;
}
h5 {
font-size: 1em;
}
h5 .anchor {
line-height: 1.1;
}
h6 {
font-size: 1em;
color: #777;
}
h6 .anchor {
line-height: 1.1;
}
p,
blockquote,
ul,
ol,
dl,
table,
pre {
margin-top: 0;
margin-bottom: 16px;
}
hr {
height: 4px;
padding: 0;
margin: 16px 0;
background-color: #e7e7e7;
border: 0 none;
}
ul,
ol {
padding-left: 2em;
}
ul ul,
ul ol,
ol ol,
ol ul {
margin-top: 0;
margin-bottom: 0;
}
li > p {
margin-top: 16px;
}
dl {
padding: 0;
}
dl dt {
padding: 0;
margin-top: 16px;
font-size: 1em;
font-style: italic;
font-weight: bold;
}
dl dd {
padding: 0 16px;
margin-bottom: 16px;
}
blockquote {
padding: 0 15px;
color: #777;
border-left: 4px solid #ddd;
}
blockquote > :first-child {
margin-top: 0;
}
blockquote > :last-child {
margin-bottom: 0;
}
table {
display: block;
width: 100%;
overflow: auto;
word-break: normal;
word-break: keep-all;
}
table th {
font-weight: bold;
}
table th,
table td {
padding: 6px 13px;
border: 1px solid #ddd;
}
table tr {
background-color: #fff;
border-top: 1px solid #ccc;
}
img {
max-width: 100%;
box-sizing: border-box;
}
code {
padding: 0;
padding-top: 0.2em;
padding-bottom: 0.2em;
margin: 0;
font-size: 85%;
background-color: rgba(0, 0, 0, 0.04);
border-radius: 3px;
}
code:before,
code:after {
letter-spacing: -0.2em;
content: "\00a0";
}
pre > code {
padding: 0;
margin: 0;
font-size: 100%;
word-break: normal;
white-space: pre;
background: transparent;
border: 0;
}
.highlight {
margin-bottom: 16px;
}
.highlight pre,
pre {
padding: 16px;
overflow: auto;
font-size: 85%;
line-height: 1.45;
background-color: #f7f7f7;
border-radius: 3px;
}
.highlight pre {
margin-bottom: 0;
word-break: normal;
}
pre {
word-wrap: normal;
}
pre code {
display: inline;
max-width: initial;
padding: 0;
margin: 0;
overflow: initial;
line-height: inherit;
word-wrap: normal;
background-color: transparent;
border: 0;
}
pre code:before,
pre code:after {
content: normal;
}
kbd {
display: inline-block;
padding: 3px 5px;
font-size: 11px;
line-height: 10px;
color: #555;
vertical-align: middle;
background-color: #fcfcfc;
border: solid 1px #ccc;
border-bottom-color: #bbb;
border-radius: 3px;
box-shadow: inset 0 -1px 0 #bbb;
}
.pl-c {
color: #969896;
}
.pl-c1,
.pl-s .pl-v {
color: #0086b3;
}
.pl-e,
.pl-en {
color: #795da3;
}
.pl-s .pl-s1,
.pl-smi {
color: #333;
}
.pl-ent {
color: #63a35c;
}
.pl-k {
color: #a71d5d;
}
.pl-pds,
.pl-s,
.pl-s .pl-pse .pl-s1,
.pl-sr,
.pl-sr .pl-cce,
.pl-sr .pl-sra,
.pl-sr .pl-sre {
color: #183691;
}
.pl-v {
color: #ed6a43;
}
.pl-id {
color: #b52a1d;
}
.pl-ii {
background-color: #b52a1d;
color: #f8f8f8;
}
.pl-sr .pl-cce {
color: #63a35c;
font-weight: bold;
}
.pl-ml {
color: #693a17;
}
.pl-mh,
.pl-mh .pl-en,
.pl-ms {
color: #1d3e81;
font-weight: bold;
}
.pl-mq {
color: #008080;
}
.pl-mi {
color: #333;
font-style: italic;
}
.pl-mb {
color: #333;
font-weight: bold;
}
.pl-md {
background-color: #ffecec;
color: #bd2c00;
}
.pl-mi1 {
background-color: #eaffea;
color: #55a532;
}
.pl-mdr {
color: #795da3;
font-weight: bold;
}
.pl-mo {
color: #1d3e81;
}
kbd {
display: inline-block;
padding: 3px 5px;
font: 11px Consolas, "Liberation Mono", Menlo, Courier, monospace;
line-height: 10px;
color: #555;
vertical-align: middle;
background-color: #fcfcfc;
border: solid 1px #ccc;
border-bottom-color: #bbb;
border-radius: 3px;
box-shadow: inset 0 -1px 0 #bbb;
}
.task-list-item {
list-style-type: none;
}
.task-list-item + .task-list-item {
margin-top: 3px;
}
.task-list-item input {
margin: 0 0.35em 0.25em -0.6em;
vertical-align: middle;
}
:checked + .radio-label {
z-index: 1;
position: relative;
border-color: #4078c0;
}
span.user-del {
text-decoration: line-through;
}
::-webkit-scrollbar {
width: 12px;
height: 12px;
background-color: inherit;
}
::-webkit-scrollbar-thumb {
-webkit-border-radius: 10px;
border: 2px solid #f6f6f6;
background-color: #959595;
}
::-webkit-scrollbar-track {
background-color: #f6f6f6;
}
::-webkit-scrollbar-track:vertical {
-webkit-box-shadow: -1px 0 0px #ededed;
}
::-webkit-scrollbar-track:horizontal {
-webkit-box-shadow: 0 -1px 0px #ededed;
}
</code></pre>
| 0non-cybersec
| Stackexchange |
I want you to know.... | 0non-cybersec
| Reddit |
Prove that a sequence is a Cauchy Sequence. <p>Consider a recursively defined sequence with</p>
<p><img src="https://i.stack.imgur.com/l9u6U.png" alt="enter image description here"> and <img src="https://i.stack.imgur.com/tRq7N.png" alt="enter image description here"> for all <img src="https://i.stack.imgur.com/LU8jV.png" alt="enter image description here">. </p>
<p>Then a1=1/3, a2=8/27 etc. Considering that 0< x< 1/3 and 0< x^2< 1/9 and thus 8/9< 1-x^2< 1 and thereby 8/27< (1-x^2)/3< 1/3 we get:</p>
<p><img src="https://i.stack.imgur.com/IkDts.png" alt="enter image description here"></p>
<p>Induction yields that each following an is element of the interval (0,1/3) and for all n>=3</p>
<p><img src="https://i.stack.imgur.com/XMn8L.png" alt="enter image description here"></p>
<p>and thus</p>
<p><img src="https://i.stack.imgur.com/E4hhp.png" alt="enter image description here"></p>
<p>and generally</p>
<p><img src="https://i.stack.imgur.com/Gcxdk.png" alt="enter image description here"></p>
<p>which yields a geometric sum whose result ultimately proves that the sequence is a Cauchy sequence. My problem is the 2/9. Where does it come from?</p>
| 0non-cybersec
| Stackexchange |
The theoretical complexity of Go - The state of the art. <p>What are the latest advances in theoretical complexity of Go?</p>
<p>I know some early works about the complexity of Go:</p>
<ol>
<li><p><a href="https://dl.acm.org/doi/abs/10.1145/322186.322201" rel="nofollow noreferrer">"Go is polynomial-space hard"</a> proved that Go is PSPACE-hard.</p></li>
<li><p><a href="https://link.springer.com/chapter/10.1007/3-540-45579-5_16" rel="nofollow noreferrer">"Ladders are PSPACE-complete"</a> proved that ladders are PSPACE-complete.</p></li>
<li><p><a href="http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.69.8186" rel="nofollow noreferrer">"Go endgames are PSPACE-hard"</a> proved that Go endgames (or yose) is PSPACE-hard.</p></li>
<li><p><a href="https://link.springer.com/chapter/10.1007/3-540-48957-6_15" rel="nofollow noreferrer">"On the complexity of Tsume-Go"</a> proved that the the complexity of Tsume-Go is NP-complete.</p></li>
<li><p><a href="https://link.springer.com/chapter/10.1007/978-3-319-27992-3_8" rel="nofollow noreferrer">"Go Complexities"</a> proved that Atari Go is PSPACE-complete.</p></li>
</ol>
<p>Since there are several rules of Go (They are different but similar), it is a little complicated to analysis it. We only know that the lower bound of the complexity of Go is PSPACE-hard and the upper bound of it is EXPSPACE.</p>
| 0non-cybersec
| Stackexchange |
Separation of balls in the torus. <p>Let <span class="math-container">$X_1, \dots, X_N$</span> be <span class="math-container">$N$</span> balls of radius <span class="math-container">$R<<1$</span> in <span class="math-container">$[0,1]^d$</span> such that <span class="math-container">$N R^d \leqslant R^{\alpha}$</span> for some <span class="math-container">$\alpha > 0$</span> and <span class="math-container">$d(x_i,x_j)\geqslant 2R$</span> for any <span class="math-container">$i\not=j$</span>.</p>
<p>The assumption means that there are very few balls and I would like to know if one can separate them : finding <span class="math-container">$\delta_1<\delta_2$</span> (depending only on <span class="math-container">$\alpha$</span> and <span class="math-container">$d$</span>) such that for all <span class="math-container">$x_i, x_j$</span>, <span class="math-container">$d(x_i,x_j)\leqslant R^{1-\delta_1}$</span> or <span class="math-container">$d(x_i,x_j)\geqslant R^{1-\delta_2}$</span>.</p>
<p>Obiously, this is false in general (consider balls of radius <span class="math-container">$R$</span> around <span class="math-container">$\{(x,0) , \;x\in [0,1]\}$</span> in the two-torus) but is this is the only example ?
Is it true that one can always find a partition of the balls such that two partition are distant and, in a given partition, the balls are "in the same direction" ?</p>
| 0non-cybersec
| Stackexchange |
Not able to create this table. <p>I am trying to create this table in my database with no luck at all. All my tables look the same, but this one is giving me trouble.</p>
<p>I am using Notepad to type, then copying the code to the MySQL 5.7 command line.</p>
<pre><code>CREATE TABLE Order Parts (
'ord_id' INT(7) NOT NULL AUTO_INCREMENT PRIMARY KEY,
'part_id' INT(7) NOT NULL,
inv_id INT(7) NOT NULL,
ord_shipdate DATE NOT NULL,
ord_received DATE NOT NULL,
ord_status VARCHAR(15) NOT NULL,
ord_cost DECIMAL NOT NULL
);
</code></pre>
| 0non-cybersec
| Stackexchange |
fresh door mat pizza. | 0non-cybersec
| Reddit |
Supplement Thursdays. Welcome to another week of Supplement Thursdays; last week we were discussing supplements that [you really shouldn't waste your money on](http://www.reddit.com/r/Fitness/comments/oxjf5/supplement_thursdays/). This week is brought to you by the letter 'A' and the Anthocyanin 'Cyanidin' (because this compound is very sexy, but at the moment seems like a worthless oral supplement due to bioavailability).
Like usual, any supplement related question can be asked despite a guiding question being given. This week's guiding question is:
> **Pre-workout supplementation; do you use any, what do you use, and why? Do you merely want to be stimulated, do you measure the benefits of a pre-workout by performance in the gym, or are you catering a pre-workout for a long-term goal? (ie. muscle growth)** | 0non-cybersec
| Reddit |
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