dormitory | Dormitory Management System for Graduation Design

You can do like create a method which will call on change of field bed_type

You can fix it by adding display: block rule to that mat-optgroup tag:

Could you share your code/tentative? and clearly specify what's not working?

This being said, unless tied to specific constraints, one should make use of encapsulation and single responsibility principle (see SOLID on wiki) by keeping implementation details private and delegating tasks to the more relevant classes.

You may have something like:

You have to surveys.push(users[user][userData]) instead of surveys.push(userData);

There is no support for "detecting de-registration" directly. Even if it were, it would not be useful.

tldr; Access, guarded by a device-secret fingerprint or otherwise, from an arbitrary and uncontrolled device cannot be used to guarantee that the person who 'owns' the device is present. It is the data governance regulations (EULA, company/dorm policy, etc.) and trust in the user to adhere to such, including reporting violations, which allows the device-to-person assertion.

On a mobile device, fingerprint authentication is effectively a per-device secret than can accept any of the registered fingerprints which is used to protect other access/secrets.

Consider:

• Fingerprints are not accessible directly by applications and thus cannot be used as "user IDs".

  Each device uses a private per-device key to encrypt and store the fingerprint information. This information is not accessible externally nor is it uploaded.

  See 'Secure Enclave' for iOS and 'Trusted Execution Environment' for Android.

• A person can have multiple fingerprints registered per device. This implies that multiple fingerprints from different people can be added and there is no way to determine the difference. Likewise, a person could register a fingerprint for a different finger on multiple devices.

• The encoding of a fingerprint is a "one way" data modeling that accepts the fingerprint as registered. The actual fingerprint data will differ, even before it's securely saved: it is only the application of this model onto the fingerprint pattern being applied that is useful.

Now, if there was a physically controlled device / system ..

An example of a physically controlled system might be usages of fixed terminals controlling single-person entry/exit doors (with security cameras and/or a physical guard) where people can only register a fingerprint in front of a trusted person after appropriate ID verification.. how much does it really matter? And what happens when a person climbs through a window?

Having the app take a detailed face / eye scan off a live camera and sending it in to a controlled server for some internal biometric-based verification might be some [draconian] half-way step .. I'd say "No Thanks" ;-)

in the post-path of your view, just provide the hotel_id.

To display a favicon you do not need a web manifest. Simply copy the image into the public folder and make sure the file is named favicon.ico.

The icons array in the web manifest is used to display the icon once the user installed the PWA on the mobile device.

Have a look at this article, where I explain in detail the different web manifest properties and how to set it up properly,

The awesome-ness of Kiss and Strunk (2006) Punkt algorithm is that it's unsupervised. So given a new text, you should retrain the model and apply the model to your text, e.g.

It seems that you are just getting started with MiniZinc. So I'd like to welcome you to the community. You seem to be getting the hang of declaring data in the language, but you might want to have a look at the different data types. Gender for example is ideally not a string, but either a enum or, if you are using only two types, then you could use the Boolean type. Similarly disability and access can be changed to the boolean types.

The most important decision in a model is which variables to choose. In the model I've provided I chose to use set variables, where every room is represented by a set of the children that occupy it. You can set the gender labels for the room from the data file, but since the data was not given I've turned this into a variable as well, letting the solver decide which gender should be assigned to which room.

When adding constraints you should always try to use global constraints, so to enforce that all children are only in one room, we use all_disjoint. We can also use the array_union function to ensure that all children are assigned to a room. The other constraints should probably speak for themselves.

The final (soft) constraint can be seen as an objective of the model. We would like to minimize the age difference in the rooms. This means we first have to compute this difference and then set it as the objective function (solve minimize). Note that adding these computations and the objective do add a lot of complexity to the model.

To output the assignments we can use an output statement. You can likely get your output any way you like, but I prefer to display both the assignments made and the objective function that we are computing.

Model