finite automata – Question about an answer related to designing an ASM for a sequence detector

The question says:

Design a sequence detector that searches for a series of binary inputs to satisfy
the pattern 01(0*)1, where (0*) is any number of consecutive zeroes. The
output (Z) should become true every time the sequence is found.

The answer to this example in the document I am reading is this:

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My question is: After going from state ‘first’, the decision box checks X. If it is 0, then it does not fit the pattern 01(0*)1. So, it should go back to state ‘start’. In this answer, it goes back to state ‘first’ instead, and so a sequence that violates the pattern could eventually get accepted. Am I correct to think so? If not, why?

The question is tagged with finite automata because there is no ASM tag. The two are similar enough.

Programming languages ​​- practical use cases for Expo Face Detector?

I am relatively new to React Native and use Expo. I have received an Expo face detector that works on my device with all landmarks and classifications. I just wonder what are some examples of what I can do with this function at the Expo without having to eject it. Some people recommended Kairos for face recognition authentication. I came across Jeeliz for Snapchat-like filters, although I'm not sure if it's only for web apps. If anyone can recommend libraries that I can use with the Expo-Face detector, I would appreciate it.

Java Audio from Asset Folder in TFLite Object Detector Android Studio can not play

I'm using the Tensorflow for Android object recognition sample app, and I want every object I recognize pronounced in Arabic. However, because TextToSpeech does not have Arabic, I have recorded MP3 files and saved them in the Assets folder, but they are not running any audio.

This is most likely due to the repeated scans of the detector running on the same thread as the audio, but I tried to run the audio on a thread and it did nothing.

The activity I try to do with the audios is called DetectorActivity, and it extends a class called CameraActivity. Audio is somewhat played back by CameraActivity, possibly because it has a R.layout.activity_camera and DetectorActivity is not, just to point out DetectorActivity is an activity, but CameraActivity is just a class extended by DetectorActivity and has a layout.

public class DetectorActivity extends CameraActivity implemented OnImageAvailableListener {

running in the background (
new runnable () {
public void run () {
for (final classifier, recognition result: results) {
final RectF location = result.getLocation ();
if (location! = null && result.getConfidence ()> = minimumConfidence) {
String category = result.getTitle ();
playBeep (category);

public void playBeep (String filename) {
MediaPlayer m = new MediaPlayer ();
To attempt {
if (m.isPlaying ()) {
m.stop ();
m.release ();
m = new MediaPlayer ();

AssetFileDescriptor descriptor = getAssets (). OpenFd (filename + ".mp3");
m.setDataSource (descriptor.getFileDescriptor (), descriptor.getStartOffset (), descriptor.getLength ());
descriptor.close ();

m.prepare ();
m.setVolume (1f, 1f);
m.setLooping (true);
m.start ();
} catch (exception e) {
e.printStackTrace ();

cyanogenmod – Android phone strange after passing a metal detector

Phone is Oneplus One running Cyanogenmod (use the version, but it should be the latest version of OpOs)

It all started after a metal detector scan – the phone worked flawlessly for 20 to 30 seconds and the screen was frozen indefinitely. When you restart, you can see the same behavior. When I got back home, I plugged it into my laptop to retrieve some data and noticed that the phone was absolutely fine during the connection.

This led me to believe that it was a problem with the software. So I did a factory reset. Unfortunately, the problem persisted after that and I decided to flash the ROM. I started turning off my phone so I can switch to the Fastboot menu, but it can not be turned on after turning it off.

I'm sure it's not a battery problem, but I'm running out of options. Currently, neither Power + Vol-Up nor Power + Vol-Down are working, and connecting to the laptop does not work.

Suggestions on what to do next?

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