Explanation:
A hub is used to send the message from one port to other ports.It does not know the specific address of the destination where the message needs to send.it works on Physical layer of the OSI model(layer 1).
A switch can handle data and it knows the specific address of the destination.A switch works on the data link Layer of the OSI model(layer 2).
Answer:
Explanation:
In digital image processing, degradation is a process of introducing defects to the image. Understanding the degradation function will allow restoration of the original image.
There are many different causes for image degradation such as motion blur, digital noise and lens off-focus. In cases like motion blur, it is possible to come up with an very good estimate of the actual blurring function and "undo" the blur to restore the original image. For digital noise, a statistical model can be set up to compensate for the degradation it caused. Similarly lens focus can be compensate by an optical model if the mis-focus is known.
The above are three degradations that I could find. A lot more information can be found about restoration functions. If you search for image degradation online, you will find a discussion on Quora and an interesting introduction from Rice University. Good luck!
English:
Recycling, in general, is good, it saves space in landfills and prevents pollution. Because some of the materials used to make the electronic piece are made with toxic ingredients its better to recycle them instead of having them end up in our oceans. Also, some pieces of electronics contain valuable metals like gold and copper. These Metals can be reused to make new better electronics with having to use the energy and money to produce new materials
Español:
El reciclaje, en general, es bueno, ahorra espacio en los vertederos y evita la contaminación. Debido a que algunos de los materiales utilizados para fabricar la pieza electrónica están hechos con ingredientes tóxicos, es mejor reciclarlos en lugar de que terminen en nuestros océanos. Además, algunos componentes electrónicos contienen metales valiosos como el oro y el cobre. Estos metales se pueden reutilizar para fabricar nuevos y mejores productos electrónicos con la necesidad de utilizar la energía y el dinero para producir nuevos materiales.
Answer:
public class Triangle
{
public static void main( String[] args )
{
show( 5 );
}
public static void show( int n )
{
int i,j,k;
for (i = 0; i < n - 1; i++ )
{
for (j = 0; j < i; j++ )
{
System.out.print( " " );
}
for (k = n - i; k > 0; k-- )
{
System.out.print( "* " );
}
System.out.println();
}
for (i = 0; i < n; i++ )
{
for (j = n - i; j > 1; j-- )
{
System.out.print( " " );
}
for (k = 0; k < i + 1; k++ )
{
System.out.print( "* " );
}
System.out.println();
}
