Cannot get aspect ration to 1 with simple Graphics

I am learning Mathematica and doing a simple animation project which animates the harmonic motion of a pendulum. For some reason, I cannot get the simplest thing to work — the aspect ratio for my pendulum graph will not go to 1. I have whittled my code down to something extremely simple that illustrates my problem:

Graphics[Line[{{0, 0}, {.5, -.5}}], Axes -> True, PlotRange -> {{-1.1, 1.1}, {-1.1, 0}}, AspectRatio -> 1]

Output of the code above

Is it possible than two simple updates on same table interlocks?

Table A is:

id integer version varchar data jsonb (large data 1mb) fkToBid integer 

Table B is:

id integer other...  

Processes are aggressively running these two updates, in any order. Sometimes with same B.id and sometimes with same A.id:

UPDATE A.version WHERE A.id=:id and UPDATE A.data WHERE A.id=:id 

Why this can interlock? They should lock the A pk and the B pk always in the same order, so it should never interlock, isn’t it ? I heard somewhere about deadlock graph, how to see it?

SQL Server log file in “Simple” recovery model

Can someone please shed some light on log growth in simple recovery model. If I understand correctly, even in "Simple" recovery model the transaction log can grow? So if I have open transaction(s) (Update, Insert, Delete, Index Rebuilds, etc.) these start to re-use inactive VLF’s and if none are present the log will start growing based on log configuration until it reaches the configured size or hits disc space available limit? Can any of the active VLF’s be marked as "inactive" due to a checkpoint and\or full backups?

In short, it was requested that I change all databases to "Simple" recovery model and issue a "DBCC SHRINKFILE (N’LogName’ , 0, TRUNCATEONLY)" every hour. I received a Error 9002 and the Full database backup and dbcc shrink failed. I guess, eventually, the transactions completed and the checkpoint, full backup and dbcc shrinkfile were able to complete.

How to Connect a Website to a Simple Database Using PHP?

I watched this video here and want to build a simple database. Source code: http://bit.ly/2TwJmJP

When I connect to my domain, I get the following error message whenever I type anything in: Connect Error (1045) Access denied for user ‘root’@’localhost’ (using password: NO)

i did exactly like the video did, except called my database IDK. What do I have to do to have values start showing up in my database? I already created a table, and I feel like I am missing something.

Java simple dusk cleaner game simulator

I am working on a dusk cleaner simulator on Java, in this case the shape of the cleaner is a circular ball.

The program is quite simple, the user puts in the width and length of the "room" and coordinates x and y.

What I want to do and cannot is create a series of commands, each represented by a character. There are three commands that I want to imnplement:

  1. char ‘A’ = Move forward 1 meter

  2. char ‘L’ = Turn left 90 degrees

  3. char ‘R’ = Turn right 90 degrees

Example of user input AALA, in this case the expected output is that the machine moves 2 meters and then turns left 90 degrees and then moves 1 meter again. Hope I am clear.

As you can see in the code, I have tried to create an array of chars but I dont know what the next step should be…

The code:

public class Cleaner extends JPanel { /* int lx = 1, ly = 1; int x = 200, y = 250;  */ int x, y; int width = 52, height = 50; // width and height of the "dust sucker" int lx , ly;   // an array of chars char[] charArray ={ 'A', 'L', 'R'};       java.util.Timer move; // making the instance of Timer class from the util package static JFrame frame;   Cleaner() {          frame = new JFrame ("Cleaner started!"); // passing attributes to our fame     frame.setSize (400, 400); // setting size of the starting window     frame.setVisible (true);          setForeground(Color.black); // setting color          move = new java.util.Timer();          move.scheduleAtFixedRate(new TimerTask()     {                       public void run()          {             if(x<0)                 lx = 1;             if(x>=getWidth()-45)                 lx = -1; // -1 sets boundry for the dusk sucker             if(y<0)                 ly = 1;             if(y>=getHeight()-45)                 ly = -1; // -1 sets boundry for the dusk sucker                          x+=lx; // to make the machine move             y+=ly;                          repaint();         }              }, 0, 5// speed of the machine             );          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      }  public void paint (Graphics g)  {     super.paint(g);     Graphics2D g2d = (Graphics2D) g;     g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);     g2d.fillOval(x, y, width, height); }  public static void main (String[] args)  {     // lx value          String lxValue =               JOptionPane.showInputDialog( "Enter lx" );     // ly value     String lyValue =               JOptionPane.showInputDialog( "Enter ly" );          String xValue =               JOptionPane.showInputDialog( "Enter x value" );     // ly value     String yValue =               JOptionPane.showInputDialog( "Enter y value" );        // convert String inputs to int values        int firstInput = Integer.parseInt( lxValue );        int secondInput = Integer.parseInt( lyValue );       int thirdInput = Integer.parseInt( xValue );        int forthInput = Integer.parseInt( yValue );               Cleaner cleaner = new Cleaner();                       frame.add(cleaner);       cleaner.lx = firstInput;       cleaner.ly = secondInput;       cleaner.x = thirdInput;       cleaner.y = forthInput;             }      } 

All help is appreciated!

Looking for a very simple RPG

I’m looking for a table-top RPG to host for people with no experience whatsoever. I need something with simple, easy to use mechanics who encourage player’s imagination when facing challenges, something that can help me involve the players in an interesting storyline.

When I say simple I mean: little to no Stat sheet, No complicated rules regarding taking actions and Relatively few dice rolls.

The point should be making the players think of creative solutions while going through the story. Things like: how to get information from an npc, how to get out of an elaborate trap, how to get past a giant lava pool.

Of course the characters need to have some sort of abilities, even special ones, but using them shouldn’t be complicated (like a wizard who’s trying to build himself a strategy using a lot of different spells). Playing smart should be using everyone’s unique abilities together.

Lastly, I’m planning on using this for one-shots of a couple of hours, not long campaigns.

TL:DR I need the simplest rpg to deliver a thrilling story for a group with no past experience, while making the players cooperate and find creative solutions to challenges.

Thanks everyone!