error – How to enter vector entries in SystemModelSimulate?

I have difficulty providing a vector contributions for a Modelica model using Mathematica. To demonstrate this, I use a simple block which will pass a real vector of length 3 without cutting at its output of the same dimension:

model = ImportString[
    "block VectorPassThrough
         input Real[3] u;
real output[3] there;
y = u;
end VectorPassThrough; "


Modelica Code

Now I would like to simulate this simple block and provide a vector input:

sim = SystemModelSimulate[ model, {"y"}, {0, 1}, Association[
   "Inputs" -> {
     "u" -> Function[ t, {1., 2., 3.}]

Will throw the error SystemModelSimulate :: val :

Variables {u} have not been recognized or the types do not match the model.

Using a time series will not help either:

sim = SystemModelSimulate[ model, {"y"}, {0, 1}, 
        "Inputs" -> {
            "u" -> TimeSeries[ { {1, 2, 3}, {1, 2, 3} }, { {0, 1} }]

In what format should the vector (and matrix) entries be indicated for SystemModelSimulate?

Web Forms – Clearing Conditionally Masked Entries

Do I misunderstand how this works?

We checked "Clear hidden values", but the values ​​of hidden fields are not cleared and are submitted with visible form fields.

  1. Enter the value in the Assis and Year fields.
  2. Hide the "Session" and "Year" fields by selecting another Conditional Field, General Assembly.
  3. The "Seated" and "Year" fields are not cleared when they are hidden.
  4. Values ​​are submitted for "Sitting" and "Year".

& general_assembly = 65 & sitting = spring & year = 2016

signature – How to manually sign a transaction with multiple entries and multiple exits?

When we have multiple entries and multiple exits and we try to sign each entry, what do we enter in the output values ​​section for each of them: The total sum of the transaction entries or the corresponding amount as each entry that we sign and distribute between outings?

For non-distinct entries, the message you need to sign is almost the entire transaction. You must have all the outings in the order in which they will be in the final transaction. You do not put an exit or do not aggregate – you put them all as if it was the final transaction.

For separate entries, instead of putting all the outputs in the message, you must first chop them. They are serialized as if they were going to be in a transaction and then chopped at one time. The resulting SHA256 hash is what you use in the message. Read BIP 143 for more information about this. the value field in this message is the value of the only output expended by that particular entry.

In the section script in the entries, there is "Nothing", but what is the exact number of bytes – 1 byte, 4 bytes or something else?

"Nothing" means that there is a script of length 0, which means that the single byte 00. However, at no point in the signing of a transaction, do you sign an empty script. If you are, something is wrong.

Internet accounts in system preferences have multiple entries for iCloud … why?

Both active and inactive have the same email address In addition, I can not get rid of the Game Center account, also under I'm not sure what's going on here …

Internet Accounts Applet in System Preferences

wallet – Sign a transaction with multiple entries on

I can not sign a transaction with two entries on If I select the type of hash Sig "All (default)" in the Signature tab and I sign the transaction with the private key of one of the entries, a signed transaction is generated. If I paste it into the raw transaction area and sign it again with the second private key, another signed transaction is generated. If I check this transaction in the Check tab, the correct entries and exits are displayed, as well as the two signed entries. However, when I'm going to broadcast the transaction, I get the message "TX decode failed". I've tried with all different types of hash Sig and I always have the same error. Any help would be very appreciated.

c # – How to add entries to a database using Entity Framework in MVC?

I'm trying to add entries to my database from HTML forms in my view but I'm not sure if my code is a good practice. I've really struggled with the corresponding properties, but I'm not sure how I did that.

This is my code:


                cinereservacionEntities CineBD = new cinereservacionEntities ();

    Public ActionResult Peliculas_Agregar (PeliculasVM pelis) {

using (var context = new cinereservacionEntities ()) {

var s = context.peliculas.Add (new pelicula () {
id_peli = pelis.Id_peli,
titulo = pelis.Titulo,
director = pelis.Director,
cast = pelis.Cast,
descripcion = pelis.Descripcion,
categoria = pelis.Categoria

CineBD.peliculas.Add (s);
CineBD.SaveChanges ();


return view (pelis);

My code worked and the entries worked, but I ask if my code is programmed or if there is another solution / practice to simplify the entry.

mariadb – Design entries / table grouping

I build a web application and part of it is to save some values ​​(length) of unknown quantity.
In order to keep these grouped / linked values ​​together, I think adding a group ID field like this:

CREATE TABLE `spacings` (
`axis` VARCHAR (10) NULL DEFAULT NULL COLLATE & # 39; utf8mb4_unicode_ci & # 39;
`group_id` VARCHAR (16) NOT NULL COLLATE & # 39; utf8mb4_unicode_ci & # 39;
Primary key (`pos`,` distance`, `group_id`) USE BTREE
COLLATE = utf8mb4_unicode_ci & # 39;

and reference "group_id" in other tables. The disadvantage of course is that the group_id field can not be a real foreign_key and the relationship has to be handled in the application.

My question is, is there a better approach to this?

Thank you in advance.

Form with multiple entries of multiple users

I need to create a form with the following conditions:

  1. Must be able to accept multiple entries from multiple users.
  2. Save as draft while other users still fill the form all day
  3. Once all the fields are filled, a submission records the results of the forms and emails

I have somehow an idea for # 3 but I'm not sure of # 1 / # 2.

terms of taxonomy – effective organization of the geographical state / region / content for entries

It's kind of a general question, but maybe someone has an idea.

I have a database that will have more than 300,000 entries. Each of these entries will have multiple entries for "location" – no specific locations, nor gps coordinators. These are regions, around the world. And there can be many locations for each entry.

The first attempt is to create a taxonomy of locations from which to choose, with a hierarchy of content -> sub-continent -> country -> state / department / province. In the input form for each element, a selection list extracts each region of the taxonomy and allows you to explore smaller regions in a next drop-down list, with each selection.

I did not think it would become such a burden for the system, but it certainly used such a large set of taxonomy terms in one vocabulary. Maybe someone found a lighter way to do it?

botattack – Activities to initialize spam on form entries

Activities to start spam on form entries.

Please, this question is not about how to protect the sites against spam boots via Google Recaptcha, captchas, math questions, and so on.

I am writing a thesis on how spambots work. I just have to point out these points to be able to use it as the basis of my thesis.

Spamboot has usually filled in all the form fields encountered.

My question is since they easily fill out the entire form.

1.) Do spambots concentrate form entries as they are inserted? You know that for each insertion, the form entries must be focused.

2.) Do spambots enter data, delete data entered in a form entry field as a human?

3.) How do spambots trigger a send button? It's the same as the man.

Thank you