Tag: systems

Embedded Systems – How to Connect IOT Devices to an Android Application (Initial Connection)

Context
I start a new project and I want custom IOT sensors for an application that I write. I want everything to be as simplistic as possible so that IOT devices can not run any major software or anything else, I want them to be as simple as sending and receiving loop declarations (I know that They will have to have something, but for the design, I want to assume that they are as stupid as possible, so I do not make any assumptions).

Question:
I am not sure how I will establish the initial connection between the application and the IOT device without an Internet connection. I was thinking of trying to configure an HTTP listener on the application with the IOT device configured to connect to "SSID by default" at startup if the connection has not yet been created. I guess once this call is made, the application can handle the rest of the connections.

I was wondering if this approach is valid and is it possible in Android? Is there a better, more standardized way that traditional IOT devices make connections

Thanks in advance 🙂 Just do not want to finish 6 months with a wrong design approach.

Ds.dynamical Systems – Top Yoccoz Puzzles Topology $ n $

This paper "Local Connectivity of Julia Sets and Bifuraction Loci: Three Theorems of J.C. Yoccoz" (link on Hubbard's page) indicates that it's quite easy to manually build the topology of a puzzle at a given depth (see Note 5.3). I wonder if for the third of branch, we know that there are three outer rays that land at repulsive fixed points $ alpha $, so it's easy to know the depth of knowledge $ 0, then the topology of the depth $ 1 $ can be obtained by mapping each puzzle in depth $ 0 under $ f ^ {- 1} $. Now, I'm a little confused as how do we know the position of the preimage of $ alpha $how to know which piece is $ f ^ {- 1} ( alpha) $ To belong to? Moreover, how do we know the topology of a puzzle in depth? $ 2 $or depth $ n $? Are there more details can I get from here?

Lotto systems and number theory

Is there a link between the Pascal triangle and the Delta lotto system? If so, how can it be traced?

design – What resources can I learn developing / coding algorithms for control systems?

For the experience, I have the know-how in energy / HVAC and control systems thanks to a non-CS engineering degree. I have also taken courses on basic data structures and algorithms, as well as on Python programming.

I want to learn how to develop algorithms / codes for control systems, especially energy / HVAC systems.

Are there any manuals / resources / websites that I can study?

artificial intelligence – Can a virus be transmitted to artificial intelligence systems by viewing an image / video?

Scenario: The AI ​​advanced until we used it on spaceships to see what is out there. Then the artificial intelligence system should treat any image seen from stars or videos if we add time.

In our PC, a jpeg file may contain a virus, but we have to click on it for the virus to work. For AI, the click seems to be the default, otherwise it is basically blind.

If there are hyper-evolved AIs wishing to transmit the virus to other possible AIs to destroy or assimilate them, could they send light signals that can become a virus if they are processed by our AI? image processing?

operating systems – Converting the physical address into logic

In the 8-bit address space, there are 16 pages and the page table stores:

68792EA51BD3CF04 (Hex)

The physical address is 39h, what is the corresponding logical address?

I literally have no idea what to do, I've tried to look at different sites and work with formulas, but nothing seems to work. I do not think it has been covered in the conferences yet, but it could come up on the exam.

I would appreciate any form of help, thanks and sorry to take your time.

Resolution of 2 systems of integral equations with 2 variables

I am trying to numerically solve a system of 2 integral equations with 2 unknown variables. The integrals result from the integrals of the Fermi-Dirac distribution.
My code is:

(*Those dv,u are just 2 input variables that we specify for the problem at hand*)
   `dv := 1
u := 10 
(*I specify the 2 integral equations*)
f(x_, y_) := (1/4)*
   Integrate(z^(-1/2)*1/(1 + Exp(z - x/y)), {z, 0, Infinity});
g(x_, y_) := (1/2)*
   Integrate(z^(1/2)*1/(1 + Exp(z - x/y)), {z, 0, Infinity});
(*I try to solve the 2 equations with the following method*)
eq1(x_?NumericQ, y_?NumericQ) := dv - f(x, y)
eq2(x_?NumericQ, y_?NumericQ) := 1/12*dv^3 + u^2*dv - g(x, y)
sol(x_?NumericQ, y_?NumericQ) = 
 NSolve({dv - f(x, y) == 0, 1/12*dv^3 + u^2*dv - g(x, y) == 0}, {x, 
   y}, WorkingPrecision -> 30)
(*Then I try to make the program print the values of x,y so that I could use them later on*)
Print(sol(x, y))

Unfortunately, the code does not seem to work, the NSolve function does not work. Even the inclusion of the collapse function would only generate the error message "This system can not be solved with the methods available for NSolve".
I do not know how to proceed now.

Paying System – Payment Systems – HYIPs

I am neither an administrator nor owner of this project

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Investment plans


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accessibility – Notification scheme included in design systems

It appears that the standard RED, YELLOW, GREEN and BLUE colors are used in the notification styles / styles of the most popular development frameworks such as Material.io and Bootstrap.

Of course, colors should not be used alone as a UI design element, but standardizing RED and GREEN combinations in a color palette reduces the effectiveness of other design elements in distinguishing between different colors. statuses in the schema / style of notification.

Are there examples of design systems or development frameworks in which the style / style of notification takes into account common issues:

  • Daltonism in red and green colors (and other forms of color blindness)
  • Low contrast (bright yellow or feint)
  • simple and clear iconography to complete the notification color scheme

Ds.dynamical systems – Geometrically understand the state of the transcritical bifurcation (Crandall-Robinowitz)

Consider the dynamic system $ dot {x} = F (x, lambda), x in mathbb {R ^ n} $and let $ F (0, lambda) = $ 0 for a neighborhood of $ lambda_ {0} $, the transcritical bifurcation occurs if we have $ w frac { partial F} { partial x partial mu} (v) neq 0 $ ,or $ w $ and $ v $ are the eigenvectors left and right of $ F $ for own value $ 0. I want to know what it means geometrically.

On the other hand, as part of the Banach space,
the condition goes to $ frac { partial F} { partial x partial mu} (v) notin R (D_xF (0, lambda_0)) $since we can also interpret $ w $ above as $ Ker (F ^ *) $, and $ Ran (F) perp Ker (F ^ *) $, so I believe this is the case of the Banach space says, I want to know where it is right