## turnkey solution for engaging website visitors with embedded live stream, with call to action and/or chat [on hold]

I need a turnkey solution for a live stream with call to action and/or chat on one page of our wordpress site, which meets the following requirements:

1. I want all visitors to the webpage to instantly see and hear us speaking to them immediately upon landing on the page. And I want it work on all devices. And no plugins, no need to click anything or “allow” anything. In other words, I need a responsive embedded HTML5 live stream that loads instantly and allows the visitor to see us and hear us without having to click or “allow” anything.

2. I want to know when a visitor lands on the page so that we can address them live.

3. I want to be able to engage the visitor with a call to action. Perhaps even allow them to type to us. But at least be able to display a call to action button. Ideally a chat option too, which does not require any sign in or anything to “allow”.

So in short, I need a responsive embedded HTML5 video stream, with call to action and/or chat to be able to engage each visitor as they land on the page. The visitor should not be required to click anything or “allow” anything in order to see us and hear us (nor should they be required to sign in to anything or “allow” anything to be able to chat with us if there is a chat option).

I’ve searched a lot for solutions such as web conferencing, webinars, live chat support, youtube live, etc., but I haven’t found anything that meets our requirements. Anyone know a turnkey solution for what we need? Where we just configure it and then add the embed code to the webpage? Thanks in advance!

## The history of thumbnails (or just a previous thumbnail) is embedded in an image file?

I was surprised when I cropped an image on Windows Phone, saved it, sent it via e-mail to a PC, and then downloaded it – and the thumbnail in the download folder was the one of original, not cropped image for a few seconds until finally it would refresh to the expected one.

Maybe I just don’t know something obvious, but because I couldn’t find any information on image file thumbnail history, jpg old thumbnail stored in file and similar searches, I think that while it may be a known functionality of some image formats, then surely not known widely enough by users. An unaware user might make a photo with private data, crop the private data out and send it to someone, and this private data can not only be possibly acquired from a thumbnail by the intended receiver, but the image may be traveling from hands to hands – there might be millions of images over the Internet which contain private information in old thumbnails.

Here’s some examples:

• A photo of an identity card can be watermarked for a specific company with a company’s name and a date, e.g. Quizzacious Systems 2016/03/05, to confirm an identity of a player which forgot a password; if a support employee has evil intentions, he can take a previous thumbnail of the image, which has no watermark, and use it to confirm his identity as this person – thumbnails in extra large size actually have a comparable resolution with cheap cellphones and may be accepted as a proof of an identity at least by some companies.
• A photo of an identity card or anything else with some information censored out by black rectangles – everyone with minimum knowledge knows, that a black rectangle in some formats is not just another layer of data, but removes the original data behind it; at least that’s what I thought before discovering this vulnerability. It seems, however, that you can take a censored image and read censored data from it’s old thumbnail – the resolution might be too low for a scan of a sheet of paper, but it can be enough for something of a size of an ID.
• A photographic proof may be tested for authenticity by checking an old thumbnail and what was cropped out.
• A photo with nakedness can be censored or cropped and then get popular over the Internet.

So what I’m missing here? It seems a serious security vulnerability, something at least a common user should be well aware of, and yet I wasn’t. Microsoft answered on my e-mail:

this is not a valid vulnerability as this is by design. This functionality is also inline with cropping in Office.

However I was aware of that in case of MS Office (still many users might not be), and if you print the document to either paper or PDF the cropped data is lost; you can also use the “compress” feature and remove cropped parts of an image there. How to you deal with JPG files, though?

1. Is there a tool to read old thumbnails of images?
2. How to remove data from an image permanently?
3. Is it just a single previous thumbnail or all previous thumbnails that are stored?
4. Does it affect only thumbnails, or – as MS suggests – it works like in Office and whole original photo is stored in a file?

## 8 short tutorial videos: all embedded in one page vs separate pages with title link?

I’m putting together a catalogue page for eight 3-minute video tutorials explaining how to assemble electronic components (if relevant, here is an example video). The context is a robotics competition for high school students that I help organize.

We feel that having all the videos embedded on one page will allow students to reach the desired information in the fewest number of clicks from the home page (2):

I prefer this to having them click the text-only title to find their video embedded into a single page (but the performance impact for the client of loading eight iframes at once irks me).

Aside from the performance issue, is there any reason not to do this from an IA or UX standpoint?

## Is ICT a good basis to become a good embedded software engineer?

I’d like to get a job as an embedded software engineer, I like electrical engineering but I love programming so I figure embedded software is a nice mix between the 2.

Therefore I would like to know wetherit is better to take an electrical engineering course and choose embedded system related minors or is it better to do an ICT course and steer towards embedded systems?

## Understanding Embedded submanifolds and immersions

I am trying to understand the concept of embedded submanifolds and have the following understanding:

Suppose we have a smooth manifold $$\pmb M$$ and $$\pmb N$$ of dimensions m and n such that m$$\gt$$n .Let$$\pmb F$$:$$\pmb N$$ $$\to$$ $$\pmb M$$ be a smooth map and a topological embedding onto it’s image $$\pmb F(N)$$ under subspace topology that $$\pmb F(N)$$ inherits from $$\pmb M$$.So, there is a smooth structure on $$\pmb F(N)$$ such that $$\pmb F:\pmb N \to \pmb F(N)$$is a diffeomorphism(the smooth coordinate maps are just maps of the form,$$\pmb f0\pmb F^{-1}$$,where f is a smooth coordinate map for $$\pmb N$$).Therefore,it gives us a smooth manifold $$\pmb F(N)$$ of dimension similar as $$\pmb N$$ which sits inside $$\pmb M$$.

Now,the definition of embedded submanifolds as given in the text of boothby is: image of a topological embedding+immersion is an embedded submanifold

my problem is:

if just taking $$\pmb F:\pmb N \to \pmb F(N)$$ as a topological embedding gives $$\pmb F(N)$$ diffeomorphic to $$\pmb N$$.so,it gives a smooth manifold $$\pmb F(N)$$ with same dimension as $$\pmb N$$,why do we even need to consider immersions?

## Circular Queue in C for an embedded project

I wrote a simple circular queue. (in order to store characters because of the fact, that I am using UART through the DMA and sometimes my printf’s override each other) I am looking for some review, though my testfile was successful I have feeling I’ve overseen something and the queue might be buggy at some point. I appreciate any kind of critics, ideas or improvements

#ifndef __QUEUEH #define __QUEUEH  typedef struct queue {      unsigned int head;     unsigned int tail;     unsigned char* buf;     unsigned int bufSize;     unsigned int freeSpace;     unsigned int occuSpace;     unsigned char initialized;  } queue_t;  extern int queue_init(queue_t* q, unsigned char* buf, unsigned int bufSize); extern int enqueue(queue_t* q, unsigned char* element, unsigned int size); extern int dequeue(queue_t* q, unsigned char* str, int strMaxSize); // change to static extern int printQueue(queue_t* q); #endif 

C-File:

#include "queue.h" #if !defined bool typedef unsigned char bool; #endif  extern int queue_init(queue_t* q, unsigned char* buf, unsigned int bufSize) {     q->head = -1;     q->tail = 0;     q->buf = buf;     q->bufSize = bufSize;     q->freeSpace = bufSize;     q->occuSpace = 0;     q->initialized = 1;     return 0; }  static inline bool moveTail(queue_t* q) {     q->occuSpace = q->occuSpace - 2 - (q->buf)[q->tail];     q->freeSpace = q->freeSpace + 2 + (q->buf)[q->tail];     q->tail = (q->tail + (q->buf)[q->tail]+2) % (q->bufSize);     return 0; }  static inline bool enoughSpaceAvailable(queue_t* q, unsigned int size) {     if(q->freeSpace < size+2)         return 0;     return 1; }  extern int enqueue(queue_t* q, unsigned char* element, unsigned int size) {      if(size==0)         return -5;     else if(size>q->bufSize-2)         return -8;      while(!enoughSpaceAvailable(q,size))             moveTail(q);      q->occuSpace = q->occuSpace + 2 + size;     q->freeSpace = q->freeSpace - 2 - size;     q->head = (q->head+1)%(q->bufSize);     (q->buf)[q->head] = size;     for(int i = 0; i<size; i++) {         q->head = (q->head+1)%(q->bufSize);         (q->buf)[q->head] = element[i];     }     q->head = (q->head+1)%(q->bufSize);     (q->buf)[q->head] = size;     return 0; }  extern int dequeue(queue_t* q, unsigned char* str, int strMaxSize) {      int len = q->buf[q->tail];     if(q->freeSpace == q->bufSize) return -6; else if(strMaxSize<len) return -7;      for(int j=0; j<len; j++) {         str[j] = q->buf[(q->tail+1+j)%(q->bufSize)];     }     moveTail(q);     return 0; } 

## Is there a recommended size for embedded maps or videos?

Basically what the title says.

I know that anyone can do what they want, and I also know that the embedded content can be integrated in a responsive way, thus maintaining its original proportion. However, as everything related to the sizes, I’m pretty sure there must be some kind of optimal size for each device.

For example, on my 2560×1440 monitor, the videos look excessively large if I’m on my desk, and the maps require a lot of zoom to focus on where I’m looking.

Another common case is that of many designs that take the entire width of the page for a map, but with a reduced height, providing a lot of information on the x axis, and very little on the y axis, which leads me to think that simple use of the laws of Hicks and Fitts, there must necessarily be an optimal measure. However, I could not find anything conclusive, which motivates my question

Just in case, I’m interested on any kind o embedded content, but mainly on maps

## Oracle instance with embedded older version of Java within its directories flagged with numerous vulnerabilities

The issue is an Oracle instance with embedded older versions of Java within the Oracle directories that are being flagged with numerous vulnerabilities. Installing the April 2018 Oracle Java patch does not resolve the issue because it doesn’t touch those directories.

OS: Oracle Linux 7.2 Oracle version 11.2 vulnerability management software: InsightVM (formerly known as Nexpose) Java is in two directories: /u01/oracle/product/11.2.0/OPatch/jre - Java 1.6.0.65 /u01/oracle/product/11.2.0/jdk/jre - Java 1.5.0.51 

We contacted Oracle Support and they responded that we cannot update Java within the Oracle instance. If we do, we could break our instance and access to the database. Within InsightVM, one can create exceptions, but we are looking at creating over 500 of them! We can’t be the only organization that has run into this issue.

I’m posting this question here in the hopes that someone else has had the same issue and can share recommendations.

## Warning: Invalid argument supplied for foreach() HTML embedded

I have made a basic search engine and I try, to fetch the results, on the same page; moreover, the results have been retrieved and stored in the associative array, but the embedded code in HTML shows only one record, of the results. 

<?php require('Configuration/config.php'); require('Configuration/db.php');    //If the user clicks, on the button search, the execute the query if (isset($_POST['search_btn'])) {$  search_query = $_POST['search']; //$  search_query = htmlspecialchars($_POST['search']); //Create the query.$  query = "SELECT * FROM The_primary_arkivum WHERE      Name = '$search_query' OR Address = '$  search_query' OR      Category = '$search_query' OR Country = '$  search_query' OR     State = '$search_query'"; //Get the results.$  results = mysqli_query($conn,$  query);      //Fetch the data, of the result, to an array.     $search_results = mysqli_fetch_all($  results, MYSQLI_ASSOC);     //var_dump($search_results); //var_dump($  search_query);      //Free result     mysqli_free_result($results); //Close the connection mysqli_close($  conn); } ?>  <?php include('included/header.php'); ?>     <body>         <div class = "header">             <h2>Search</h2>         </div>          <form method="post" action="search_index.php">             <div class="input-group">               <label>Search</label>               <input type="text" name="search" value="<?php echo $search; ?>"> </div> <div class="input-group"> <button type="submit" class="btn" name="search_btn">Search</button> </div> <?php foreach($  search_results as $search_result) : ?> <div class="mySlides fade"> <?php echo$  search_result['Name']?>               <?php echo $search_result['Address']?> <?php echo$  search_result['Country']?>             </div>             <?php endforeach; ?>         </form> <?php include('included/footer.php'); ?> 

## A connected embedded submanifold, which is contained in an immersed submanifold, is connected in this submanifold?

I’m currently studying foliation theory, and to solve a problem I need the following to be true, but I can’t prove nor disprove, I just have a feeling it may be false in general: if I have a smooth manifold $$M,$$ and a connected embedded submanifold $$P$$ of $$M,$$ which is contained in an immersed submanifold $$F$$ of $$M,$$ is $$P$$ also connected in the immersed submanifold topology of $$F$$?

At first I thought this was obviously true, but giving it a little more thinking, either I’m making some mistake or, if this is true, it is certainly not obvious. Here is what I did: $$F$$ may have a finer topology than its subspace topology. If $$F$$ was an embedded manifold, then the subspace topology of $$P$$ in $$M$$ would coincide with its the subspace topology as a subset of $$F,$$and then it would be connected in $$F$$. But with $$F$$ being immersed, $$P$$ with a topology induced by the immersed topology of $$F$$ may have an open set which messes with its connectedness. Any ideas, or did I made some mistake? Thanks.