Friday, September 3, 2010

CrazyEngineers Forum

CrazyEngineers Forum

Where is HDL subsystem in DSP builder

Posted: 03 Sep 2010 12:14 PM PDT

Hi,

I am new to DSP builder and FPGA programming. I was following DSP builder example which was on implementing FIR filter using DSP builder in Simulink and generating VHDL to be implement in my cyclone 2 FPGA. I came across this block as was given in the example steps which was "HDL SubSystem block" but I can't seem to find this block in my DSP builder library... could someone tell me what is wrong... I even tried reinstalling DSP builder..

here is the tutorial that I have been using to design me FIR filter using simulink.... its on page 39 step 10 from adobe file....its on the 2nd section Implementing DSP design using FPGA....
here is the link 4shared.com - free file sharing and storage

According To QuantCast, Android Is Eating IOSs' Lunch In The US

Posted: 03 Sep 2010 09:22 AM PDT

Leading web analytics company, Quantcast published an interesting post on their blog - Quantcast Blog)



Interesting, huh? Do you think Android will dominate all other Mobile OS in near future? After all, it's so open!

OMG!! 3M's Half Inch Projector Can Project 40" VGA image! W00t!

Posted: 03 Sep 2010 09:17 AM PDT

3M's new tiny device is surely going to be a game changer. The half inch projector can project a 40 inch image. The device will be showcased at CES. The LCoS projector is about the size of a wireless headset, according to 3M, and tops out at VGA resolution!

Image Credit: Engadget

Solar AC

Posted: 03 Sep 2010 06:29 AM PDT

hi guys I'm a final year mech engg. student. I trying to make a ac with air absorption cycle. the source of heat I'm planning to use is solar energy. I'm also trying to use heat from the conventional ac compressor and condenser heat output. i want further suggestions from you.

GE's Global EcoMagination Challenge: Last Date: September 30, 2010

Posted: 03 Sep 2010 05:26 AM PDT

Word list for me (c)

Posted: 03 Sep 2010 04:52 AM PDT

canvass (v): To seek votes or opinions; to conduct a survey

Circus tents, among other things, used to be made of canvas but this is a different word.

Canvass can also be a noun. A canvass is an act of canvassing. After an exhaustive canvass of consumers, the polling organization discovered that made consumers feel most optimistic about the global economy.

Word list for me (b)

Posted: 03 Sep 2010 04:44 AM PDT

balk (v): To abruptly refuse(to do something); to stop short

ballad (n): A folk song or poem

ballyhoo (n): Sensational advertising or promotion; uproar

seeking computer science project ideas

Posted: 03 Sep 2010 04:40 AM PDT

I need ideas about the recent technology projects for my 8th sem. Not related entirely to database.

Word list for me (a)

Posted: 03 Sep 2010 04:33 AM PDT

abound (v): To be very numerous; to abound is to be abundant. Abounding and abundant mean the same thing.

accentuate (v): To emphasize; to accent; to highlight

access (n): The right or ability to approach, enter, or use

CE Bulletin Suggestions

Posted: 03 Sep 2010 04:06 AM PDT

CEans,

We've setup a neat mechanism to send CE Bulletin to all the members who've opted for receiving emails from administrator.

Currently, we use CE Bulletin to send updates, important announcement from CE and our partners. I wish to know, what can we include in CE Bulletin to make it more interesting and useful for all the recipients.

Are there any volunteers who can help in making CE Bulletin useful by brining content, articles, stories (original), event information etc.?

What do you love the most about your phone?

Posted: 03 Sep 2010 04:01 AM PDT

My phone is now a days an extension of my body. It accompanies me wherever I go. I like my phone's screen the most. It's shiny bright and displays brilliant colors.

What do you love the most about your phone?

Job in CDAC or Mtech

Posted: 03 Sep 2010 03:59 AM PDT

Hi...I am doing Mtech in NIT Surathkal (Computer Science) 1 year...Recently I have been offered a job by CDAC.

Now i am confused about whether to go for job or pursuing my Mtech??

ppl say govt. jobs is a good chance.

Plzz help..asap

Is Java more difficult to understand than .Net?

Posted: 03 Sep 2010 03:57 AM PDT

This question popped up in my mind while answering one of the queries on CE Forums. I've many friends who've worked on JAVA and they say it's easier to understand. Other friends say .Net is easier.

I think it would be interesting to know what our CEans think, and why?

16 QAM and OFDM

Posted: 03 Sep 2010 03:53 AM PDT

hi guys, currently im building a passband system of 5 GHz, so I have simulated 16 QAM and its perfectly working fine at 5 GHz.

But I am very new to OFDM, I have been studying on the background of OFDM and all of them only talking about baseband OFDM. Im not interested with using the MATLAB function to generate baseband 16-QAM, cause I have to analyse the changes of BER and EVM with changes of frequency.

So my question is, the generated 16 QAM signal are not in complex value, cause I have summed the I and Q channel at the end, so from the summation of this I and Q channel, I actually got the 16 QAM signal which is very trivial.

Then I have to shift from serial to parallel before performing IFFT in OFDM, but my question is, my signal is not complex, how could I IFFT my signal? should I use (FFT) after the serial to parallel conversion and IFFT back again, but it doesnt make sense.

Please advice me on this. Thank you! Cheers!

How do you backup your cell phone contacts?

Posted: 03 Sep 2010 03:48 AM PDT

I wish to know what are the ways you all backup your cell phone contacts. Do you?
Posted by at No comments:

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

Looking for opinions on operation of 4 FET Wheatstone bridge

Posted: 02 Sep 2010 08:29 PM PDT

Hello, this is my first post here.

I am currently working with a Wheatstone bridge containing 1 JFET to sense atmospheric static fields, and the circuit is working. However, having 4 sensors in a bridge gives a signal 4 times as big. I think I have found a way to connect 4 JFETs so they are all operated by a single antenna wire and their resistances will (hopefully) rise and fall appropriately to give me a larger voltage drop across the bridge.

I don't expect all the FETs to react to the same extent, but I thought there would be some changes in the right directions. I know the circuit is not perfect, but I don't care. Just looking for a varying DC voltage across the bridge proportionate to the voltage sensed by the antenna.



You'll notice that there are no bias resistors in the circuit. This is common in many static sensing circuits so I kept up the tradition. The FETs are simply acting as voltage controlled resistors anyway, passing DC only. There is no AC signals involved.

Brief explanation of operation:
The gate of T1 senses a positive voltage, for example, so it becomes more conductive. The drain side of T1 becomes more negative so the gates of T3 and T4 become negative and they conduct less. Meanwhile, T2 gate is more positive than T3 and T4 so it conducts more, just like T1. And vice-versa.
The result is 4 changing resistances instead of one so more signal output.
T1 and T2 work together and T3 and T4 must work together but opposite to T1 and T2.

The purpose of this circuit is to get away from using resistors. I have a working circuit now with just T1 as the only FET and 3 resistors. But if the resistors can vary, like T1, the bridge output will be greater.
One reason I don't have bias resistors is that the extra resistance will increase the total resistance of the bridge, and it is most sensitive to small signals picked up by the antenna when the bridge has a small resistance.

I've checked this using the Wheatstone Bridge calculator I found online at:
Wheatstone Bridge Calculator

The FET connected to the antenna is outdoors with only the source and drain wires coming indoors. The rest of the circuit can be built indoors and connected to my current circuit.

I would like some opinions about whether or not you think this circuit would work. If not, where did I go wrong?
Please keep the explanations simple, this is just a hobby and I'm not familiar with using transistors.

Thanks

Syncro geared ac motor

Posted: 02 Sep 2010 11:44 AM PDT

ٌWhat is it?
and where we can use it ?

Why Frequency In some Countries is 60 Hz??

Posted: 02 Sep 2010 08:21 AM PDT

As per my record their are some countries in which power is transmitted @ 60Hz but with a voltage of 110V...

Please tell me why is it so????

Will it result in increase in increase Efficiency???
Or
Will it reduce the conductor requirement???
Or
Something else???

If somebody know this Please provide me the full information......
If you have any *.pdf Copy please provide it to me.........

Note: How to Upload A PDF copy here???
Answer: 1. Register Here
2. Upload your attachment their by Logging In....
3. Copy the Provided link and paste that link here......

I know, me giving you more trouble bye telling you to do this.......
But please do this, cause this question is giving much more Headache to me.....
Please help me.....
I will be very thankful to you.....

Regards,
VIPUL

Thevenin maximum power transfer theorem

Posted: 02 Sep 2010 03:52 AM PDT

In Thevenin maximum power transfer theorem it state that the load resistance,RL must be equal to internal resistance of the source,Rin. However, the efficiency of the circuit is just 50%. At here, can i say i use power source in a more effective way if be able to have an output of higher efficiency and at the same time considerable high output voltage but this output voltage will be slightly lower abit than when RL=Rin. The efficinecy will be higher alot if using RL>>Rin but the amount of output voltage will be extremely low. So in order to choose a load resistor give optimization to power saving and total output power, can consider it as a product of efficiency and total oputput power?

here i let X=efficiency*output power and consider a voltage source connected in series with an internal resistance and a load resistance,nRin where n is the value to be find.

efficiency=Pout/Pin=V^2[(nRin)/(Rin+nRin)^2]/V^2(nRin+Rin)=n/(1+n)
output power=v^2(nRin)/(n+1)^2Rin^2)=(V^2/Rin)(n/(n+1)^2)

hence X=n^2/(n+1)^3[V^2/Rin]
differentiate it with respect to n using UV method will finally get
dx/dn=[n/(n+1)^3][2-[3n/(n+1)]]
when dx/dn=0 n=0(rejected) and n=2
so at here, can i say if i take into consideration of power saving and the amount of output power dissipated, taking n=2 will give me what i want? a desirable high efficinecy and high output power.
Posted by at No comments:

CrazyEngineers Forum - Computer Science & IT Engineering

CrazyEngineers Forum - Computer Science & IT Engineering

How to Convert DVD and Video to Your Fashionable iPad

Posted: 02 Sep 2010 10:52 PM PDT

iPad has been released for about a month, but it is pretty popular among people. I think you guys who got iPad are very proud. How do you make full use of its great space without spending extra money? Show it off before friends? It is the best choice to use DVD collection and video you have. But how do you deal with it?
Recently I got the information from internet. I feel it is useful for all, so I’d like to share it with you guys. It is third-party software that can rip DVD and convert video for iPad. And the whole process is so easy. They are Aiseesoft DVD to iPad Converter and Aiseesoft iPad Video Converter.

Next it is divided into two parts to describe it in details.
Part One: How to Rip DVD to iPad.
Firstly you need download the software: Aiseesoft DVD to iPad Converter. And then install and run DVD to iPad Converter.
The specific operating steps as follows:



Step 1: Load DVD.
Click "Load DVD" to add your DVD contents.
Step 2: Set output video format.
Click "Profile" button from the drop-down list to select the exact output video format that is the most suitable for your iPad. You can click the "Settings" button to set parameters of your output video such as such as Resolution, Video Bitrate, Frame Rate, Audio Channels, Sample Rate, etc. to get the best video quality as you want.
Step 3: Select the output path by clicking “Browse” button from the line of destination.
Step 4: Click the "Start" button to start the conversion.

Part Two: How to Convert Video to iPad.

Also it is the same. Firstly download the software: Aiseesoft iPad Video Converter. And then install and run iPad Video Converter.

The specific operating steps as follows:



Step 1: Add video.
Click "Add Video" to add your video contents.
Step 2: Set output video format.
Click "Profile" button from the drop-down list to select the exact output video format that is the most suitable for your iPad. You can click the "Settings" button to set parameters of your output video such as such as Resolution, Video Bitrate, Frame Rate, Audio Channels, Sample Rate, etc. to get the best video quality as you want.
Step 3: Select the output path by clicking “Browse” button from the line of destination.
Step 4: Click the "Start" button to start the conversion.

Tips:
The two pieces of software have some basically editing functions such as trim, crop, effect,
1. Trim:
Three ways to do trim:
a. Drag the “start scissors bar” button to where you want to start and “end scissors bar” button where you want to end. (1)
b. You can click the “Trim From” button when you want to start the trim during your preview and click “Trim To” button when you want to end.
c. Set the exact “start time” and “end time” at right part of the trim window and click “ok”.


2. Crop:
Three ways to do crop
a. Select one crop mode from the “Crop Mode” drop-list.
b. Dragging crop frame to choose your own crop.
c. Set your own crop value.


3. Effect
Drag the adjustment bar to find your favorite effect of Brightness, Contrast, Saturation and Volume.


4. Merge into one file.
Pick the “Merge into one file” to merge the files you choose into one output file. (2)

There is another piece of software named iPad Converter Suite. It includes DVD to iPad Converter, iPad Video Converter and iPad Transfer.

12th c++ problem

Posted: 02 Sep 2010 08:39 PM PDT

Little Boy Banku is mad at his teacher, who ate all the sweets in the flat and even went to the neighbours to eat their sweets too. Now Banku's parents brought home a chocolate bar, and, sure enough, School teacher is here already and wants to eat it. However, this time Banku has firmly decided that not a single piece of chocolate will go to this glutton. Banku wants to use his teacher's addiction to the games of chance and suggests playing the following game. A chocolate bar can be considered as a rectangle of square units arranged in m rows and n columns and separated by lines . Two players take alternate turns. At his turn, a player must take one piece of chocolate and split it into two along one of the lines. If a player can't make a legal move (which happens when all pieces of chocolate consist of a single unit square), he loses, and the winner takes all the chocolate. But the teacher is smart enough! He immediately understood who should make the first turn in order for teacher to win, assuming that players take optimal turns. Can you guess that?
Input

First line of input contains number of test cases. The second line of the input contains space-separated integers m and n (1 <= m, n <= 50).
Output

For each test case If teacher should start the game in order to win, output "[:=[first]" otherwise, output "[second]=:]".
Example

Input:
3
2 4
1 3
2 9


Output:
[:=[first]
[second]=:]
[:=[first]

Solve this Sql Query

Posted: 02 Sep 2010 08:36 PM PDT

Consider a database which stores employee data having following fields

Name
Destination
Department
Salary

Now you have to write a sql query such that it will display the data of employee whose salary is second highest among all

Can you solve this?:p

Difficulty in implementing video conferencing on Internet

Posted: 02 Sep 2010 12:56 PM PDT

I am B.E (C.S.E) Final year student, developing a project on E-Learning.
I have designed some modules like mail,e-library etc.
I was doing video conferencing in LAN.
I have little bit idea of implementing video conferencing on LAN by using Java Media Framework through RTP protocol,
but my teacher suggested me to do that on Internet i.e a student from any location should be able to do video conferencing with the teacher at server.
I don't have any idea how to provide video conferencing on Internet.:confused:
Please give me some idea about the same.

What steps I should follow?

What will be the H/W & S/W requirements for the project?

P.S:- My teacher clearly said that she cannot guide me in this project....:(

Brief explanation of Quick Sort algorithm

Posted: 02 Sep 2010 09:32 AM PDT

On request of one user from ce,i am going to explain one of the most commonly used sorting algorithm ie quick sort

It is based on Divide and conquer approach.

It is one of the common practical example of recursion

There are generally 3 steps in this

1:-Divide a problem a multiple sub problems
2:-Solve them individually.
3:-Merge those sub problems to find solution of main problem

Algorithm

1. Choose any key element in an array which is know a pivot.
2. Reorder the array such that that all elements which are less than the pivot come before the pivot and so that all elements greater than the pivot come after it. After the partitioning, the pivot is in its final position.
3. Recursively reorder two sub-lists: the sub-list of lesser elements and the sub-list of greater elements.


Below is the program written in c++ ,it can help you for better understanding

//Program for Quicksort
#include<iostream.h>
#include<conio.h>
int partition(int a[],int,int);
void quick(int a[],int,int);
void main()
{
int *a,n,i;
cout<<"Enter size of array"<<endl;
cin>>n;
a=new int[n];
cout<<"Please enter elements for array"<<endl;
for(i=0;i<n;i++)
{
cin>>a[i];
}
quick(a,0,n-1);
cout<<"Elments are"<<endl;
for(i=0;i<n;i++)
{
cout<<a[i]<<endl;
}
getch();
}
void quick(int a[],int start,int finish)
{
if(start<finish)
{
int q=partition(a,start,finish);
quick(a,start,q-1);
quick(a,q+1,finish);
}
}
int partition(int a[],int start,int finish)
{
int x=a[finish],temp,temp1,j;
int i=start-1;
for(j=start;j<=finish-1;j++)
{
if(a[j]<=x)
{
i=i+1;
temp=a[i];
a[i]=a[j];
a[j]=temp;
}
}
temp1=a[i+1];
a[i+1]=a[j];
a[j]=temp1;
return (i+1);
}

How to Format mobile?

Posted: 02 Sep 2010 08:40 AM PDT

how to format mobile?
my mobile is of s 60 edition and i want to format it...
any suggestions?????

Problem in VB

Posted: 02 Sep 2010 07:24 AM PDT

Hi CEans,
I'm using Visual Basic 2008 express edition. While creating forms in projects, the form window appeared is not fit to the work space area. I have used maximize button also but it doesn't effects. Can anyone suggest me what to do?:confused:
And, there is an option in form property window that is "Start position". Does it have any link with the form size?

linux scheduler

Posted: 02 Sep 2010 05:22 AM PDT

can anyone tell me how to extract scheduler code from linux(ubuntu/debian) source code?
Posted by at No comments:

Thursday, September 2, 2010

CrazyEngineers Forum

CrazyEngineers Forum

Difficulty in implementing video conferencing on Internet

Posted: 02 Sep 2010 12:56 PM PDT

I am B.E (C.S.E) Final year student, developing a project on E-Learning.
I have designed some modules like mail,e-library etc.
I was doing video conferencing in LAN.
I have little bit idea of implementing video conferencing on LAN by using Java Media Framework through RTP protocol,
but my teacher suggested me to do that on Internet i.e a student from any location should be able to do video conferencing with the teacher at server.
I don't have any idea how to provide video conferencing on Internet.:confused:
Please give me some idea about the same.

What steps I should follow?

What will be the H/W & S/W requirements for the project?

P.S:- My teacher clearly said that she cannot guide me in this project....:(

God did not create the universe: Hawking

Posted: 02 Sep 2010 12:00 PM PDT

British physicist Stephen Hawking has said that the creation of the universe was a result of the inevitable laws of physics and it did not need God's help.

In his latest book titled "The Grand Design", Hawking writes: "Because there is a law such as gravity, the universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist."

God did not create the universe: Hawking - *International News ? News ? MSN India

What's your opinion?

Source: IANS, India Syndicate

Syncro geared ac motor

Posted: 02 Sep 2010 11:44 AM PDT

ٌWhat is it?
and where we can use it ?

Brief explanation of Quick Sort algorithm

Posted: 02 Sep 2010 09:32 AM PDT

On request of one user from ce,i am going to explain one of the most commonly used sorting algorithm ie quick sort

It is based on Divide and conquer approach.

It is one of the common practical example of recursion

There are generally 3 steps in this

1:-Divide a problem a multiple sub problems
2:-Solve them individually.
3:-Merge those sub problems to find solution of main problem

Algorithm

1. Choose any key element in an array which is know a pivot.
2. Reorder the array such that that all elements which are less than the pivot come before the pivot and so that all elements greater than the pivot come after it. After the partitioning, the pivot is in its final position.
3. Recursively reorder two sub-lists: the sub-list of lesser elements and the sub-list of greater elements.


Below is the program written in c++ ,it can help you for better understanding

//Program for Quicksort
#include<iostream.h>
#include<conio.h>
int partition(int a[],int,int);
void quick(int a[],int,int);
void main()
{
int *a,n,i;
cout<<"Enter size of array"<<endl;
cin>>n;
a=new int[n];
cout<<"Please enter elements for array"<<endl;
for(i=0;i<n;i++)
{
cin>>a[i];
}
quick(a,0,n-1);
cout<<"Elments are"<<endl;
for(i=0;i<n;i++)
{
cout<<a[i]<<endl;
}
getch();
}
void quick(int a[],int start,int finish)
{
if(start<finish)
{
int q=partition(a,start,finish);
quick(a,start,q-1);
quick(a,q+1,finish);
}
}
int partition(int a[],int start,int finish)
{
int x=a[finish],temp,temp1,j;
int i=start-1;
for(j=start;j<=finish-1;j++)
{
if(a[j]<=x)
{
i=i+1;
temp=a[i];
a[i]=a[j];
a[j]=temp;
}
}
temp1=a[i+1];
a[i+1]=a[j];
a[j]=temp1;
return (i+1);
}

How to Format mobile?

Posted: 02 Sep 2010 08:40 AM PDT

how to format mobile?
my mobile is of s 60 edition and i want to format it...
any suggestions?????

Why Frequency In some Countries is 60 Hz??

Posted: 02 Sep 2010 08:21 AM PDT

As per my record their are some countries in which power is transmitted @ 60Hz but with a voltage of 110V...

Please tell me why is it so????

Will it result in increase in increase Efficiency???
Or
Will it reduce the conductor requirement???
Or
Something else???

If somebody know this Please provide me the full information......
If you have any *.pdf Copy please provide it to me.........

Note: How to Upload A PDF copy here???
Answer: 1. Register Here
2. Upload your attachment their by Logging In....
3. Copy the Provided link and paste that link here......

I know, me giving you more trouble bye telling you to do this.......
But please do this, cause this question is giving much more Headache to me.....
Please help me.....
I will be very thankful to you.....

Regards,
VIPUL

Cambridge Wireless is discussing ‘Sensing from Radio’

Posted: 02 Sep 2010 08:10 AM PDT

CAMBRIDGE, UK – 2nd September 2010 – Cambridge Wireless announced today the latest presentation from the Joint Short Range Wireless and Wireless Sensing Special Interest Group taking place on 29th September 2010 at Murray Edwards College, University of Cambridge.

For more information, please visit www.cambridgewireless.co.uk/events

Wireless systems have been an invaluable part of sensing and telemetry. However, the radio system itself can be used for sensing and measuring things like location, medical phenomena, even the weather. This event will present a range of topics where wireless itself provides the transduction, and possibly the data carrier too. Topics will range from ultrawideband, spectrum monitoring, THz devices and CMOS and the latest Ofcom study results into wireless devices and much more.

Steve Edwards from Rohde & Schwarz, the sponsors for this event has this to say, "We value the opportunity to take part in events such as these as the collective expertise can often provide valuable insight and ideas that may contribute to future product development."

This event is an arena to discuss the latest developments surrounding this topic with the crème de le crème of the industry with the opportunity to debate the potential new avenues of development in the usability of radio.

Dr Soraya Jones, CEO of Cambridge Wireless says "This forum will open up the debate on the future business opportunities surrounding this field, tackling the core issues and providing a clear path for future commercial development."

Confirmed speakers include; Dr Andy Ward, Chief Technology Officer, Ubisense Ltd, Stirling Essex, Director of Business Development from CRFS, Dr Lorenzo Tripodi, Philips Research, Dr Steve Methley, Quotient Associates Ltd, Dirk Trossen, University of Cambridge and Eiman Kanjo of Cambridge Mobile Sensing.

This SIG is championed by Tim Whittaker of Cambridge Consultants, Peter George of Anritsu and Antony Rix of TTP from the Short Range Wireless SIG and Rob Blake of Philips Research UK, Dirk Trossen, University of Cambridge, Eiman Kanjo of Cambridge Mobile Sensing and Simon Loe of Alcatel Lucent of from the Sensing SIG.

Cambridge Wireless is also delighted to have Rohde and Schwarz support in sponsoring this event.

- ENDS -

Notes for editors follow

For Cambridge Wireless please contact:
Natalie Childs, Marketing and Events Executive, Cambridge Wireless
Tel: +44 1223 422 365
Email: admin[at]cambridgewirelesspdot]co.uk.
www.cambridgewireless.co.uk

About Cambridge Wireless
Cambridge Wireless is one of the world's leading wireless communities with a rapidly expanding network of companies interested in the application of wireless technologies. In addition to VIP Networking events, our activities are based around a number of Special Interest Groups (SIGs), each focussed on a specific technology and/or market area. SIG meetings provide opportunities for member organisations to meet, discuss developments in technologies and markets, showcase their capabilities, and explore opportunities for new business.

For more information visit: http://www.cambridgewireless.co.uk

Distributed on behalf of Cambridge Wireless by NeonDrum news distribution service (http://www.neondrum.com)

Problem in VB

Posted: 02 Sep 2010 07:24 AM PDT

Hi CEans,
I'm using Visual Basic 2008 express edition. While creating forms in projects, the form window appeared is not fit to the work space area. I have used maximize button also but it doesn't effects. Can anyone suggest me what to do?:confused:
And, there is an option in form property window that is "Start position". Does it have any link with the form size?

linux scheduler

Posted: 02 Sep 2010 05:22 AM PDT

can anyone tell me how to extract scheduler code from linux(ubuntu/debian) source code?

simple/good project topics

Posted: 02 Sep 2010 04:43 AM PDT

pls.i'm a final student of telecommunication option,i need a good/slmple project topics for my final year project.

Thevenin maximum power transfer theorem

Posted: 02 Sep 2010 03:52 AM PDT

In Thevenin maximum power transfer theorem it state that the load resistance,RL must be equal to internal resistance of the source,Rin. However, the efficiency of the circuit is just 50%. At here, can i say i use power source in a more effective way if be able to have an output of higher efficiency and at the same time considerable high output voltage but this output voltage will be slightly lower abit than when RL=Rin. The efficinecy will be higher alot if using RL>>Rin but the amount of output voltage will be extremely low. So in order to choose a load resistor give optimization to power saving and total output power, can consider it as a product of efficiency and total oputput power?

here i let X=efficiency*output power and consider a voltage source connected in series with an internal resistance and a load resistance,nRin where n is the value to be find.

efficiency=Pout/Pin=V^2[(nRin)/(Rin+nRin)^2]/V^2(nRin+Rin)=n/(1+n)
output power=v^2(nRin)/(n+1)^2Rin^2)=(V^2/Rin)(n/(n+1)^2)

hence X=n^2/(n+1)^3[V^2/Rin]
differentiate it with respect to n using UV method will finally get
dx/dn=[n/(n+1)^3][2-[3n/(n+1)]]
when dx/dn=0 n=0(rejected) and n=2
so at here, can i say if i take into consideration of power saving and the amount of output power dissipated, taking n=2 will give me what i want? a desirable high efficinecy and high output power.

Dark lines appearing in monitor screen ,when viewed through mobile camera

Posted: 02 Sep 2010 12:26 AM PDT

Might be you have observed,some dark lines appearing in monitor screen(mine is CRT) ,when viewed through mobile camera ...otherwise my monitor is working fine...

Why is it so??Any Electronic reason??

Use of biomass

Posted: 01 Sep 2010 11:02 PM PDT

Dear CEans,
We are here, boasting ourselves as members of developed nations and we simply turn a blind eye to facts. Now, I want you all to remember that we are engineers, if we do not think about it, who will.
Cities are the mirrors of our development statistics. The major challenge in cities is the wastes. In cities, you can find the cleanest places, and also the most hazardous. So, what can we use to curb the wastes in cities? can we use the biomass to power the city? lets discuss about this, we can bring on the change. Lets do it.

Should Companies Ask Jr. Employees To Sign 2 Year Bond?

Posted: 01 Sep 2010 10:53 PM PDT

Many leading companies, I've come to know, are asking engineering grads to join 2 year contract at the time of joining. The contract abides the new employees to continue the job with the employer for a minimum of 2 years. It's one-sided bond; meaning the employer can terminate the employment but the candidate cannot.

I've heard that this is done because the employers spend considerable money and efforts on new joinees in training them for projects. Lot of recruiters eye these 'trained employees' and offer them a slightly higher package and thus save the whole cost of training them.

But this may work against the candidates in many cases. For example, if the employer doesn't offer work in the domain of candidate's interest, the employee is bound to get frustrated and stuck up in job for minimum 2 years. Or worse, if the employer does not have a project the candidate is made to be 'on bench' for months! That ruins future career prospects for the candidate.

What's your take on this?

Happy Birthday CEan MayurPathak

Posted: 01 Sep 2010 10:05 PM PDT

CEan MayurPathak celebrates his birthday today. Let's wish him many happy returns of the day and hope he returns to CE :p

:happy::happy::happy::happy:
Happy Birthday Mayur
:happy::happy::happy::happy:
Posted by at No comments:

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

Dark lines appearing in monitor screen ,when viewed through mobile camera

Posted: 02 Sep 2010 12:26 AM PDT

Might be you have observed,some dark lines appearing in monitor screen(mine is CRT) ,when viewed through mobile camera ...otherwise my monitor is working fine...

Why is it so??Any Electronic reason??

Use of biomass

Posted: 01 Sep 2010 11:02 PM PDT

Dear CEans,
We are here, boasting ourselves as members of developed nations and we simply turn a blind eye to facts. Now, I want you all to remember that we are engineers, if we do not think about it, who will.
Cities are the mirrors of our development statistics. The major challenge in cities is the wastes. In cities, you can find the cleanest places, and also the most hazardous. So, what can we use to curb the wastes in cities? can we use the biomass to power the city? lets discuss about this, we can bring on the change. Lets do it.

Interfacing NTSC/PAL with microcontroller?

Posted: 01 Sep 2010 06:10 PM PDT

Hi,
I have CMOS camera that the output is NTSC or PAL. I want to interface with PIC. Did anyone know how to connect that? Maybe it have a chip on that. I'm trying to google search about convert NTSC/PAL into digital or convert NTSC/PAL into UART, SPI or I2C.
Posted by at No comments:

Wednesday, September 1, 2010

CrazyEngineers Forum

CrazyEngineers Forum

Graduation project idea

Posted: 01 Sep 2010 11:14 AM PDT

Hello CEans !

My name is ahmad abd allah computer science student in ain shams university -egypt

i'm in my last year and i'm searching for graduation project idea in any computer science field ( we are group of 5 ) .

any one can help me with that

thx in advance !

final year project ( communication engineering )

Posted: 01 Sep 2010 10:54 AM PDT

hey everyone
I am in my final year, looking for ideas to my final project
please if you got any help!!!!!

SAP ENVIRONMENT-Virtual Seminar

Posted: 01 Sep 2010 09:49 AM PDT

SAP ENVIRONMENT
A free virtual seminar focusing on best practices for maximizing SAP performance

ABSTRACT:
Optimizing the performance of your SAP infrastructure can yield significant bottom-line impact, enabling lower margins, higher profits and countless operational efficiencies.

Attend our upcoming virtual seminar entitled "Getting the Most out of Your SAP Environment" to hear best practice strategies designed to help you strike a balance between maximizing the value of your current SAP investment and making long-term strategy decisions to ensure future success.

Don't miss this LIVE event on September 23rd as SearchSAP.com brings a team of reputable SAP experts direct to your desktop to share insights on the hottest SAP topics including:

SAP mobile deployment
SAP virtualization, cloud computing and beyond
Business intelligence in an SAP environment
Overcoming NetWeaver integration challenges
Go beyond the hype and gain valuable insight into the latest technologies and best practices you can implement immediately to help improve the operational efficiency of your SAP environment.

Getting the Most Out of Your SAP Environment:Virtual Tradeshow

technical interview

Posted: 01 Sep 2010 09:34 AM PDT

i am having a technical interview of amdocs. i am btech cs fresher. there is no particular favourite subject that i am good in. i know some topics from all. thus i decided to take Object oriented programming concept(oops) as subject of intrest if interviewer as me so. so experts could you please mention all questions they can as on this topic also comment that is this a good topic?

Was It A Right Decision To Do MBA After B.tech in IT?

Posted: 01 Sep 2010 09:34 AM PDT

Well, guys i was very confused, for many months now? i have completed my B.tech in Information Technology and now i have started my regular 2 year MBA program from a good b-school! Now many suggested to go for a job in I.T industry , which i tried but never got selected? Many said to go for M.TECH ............ and some suggested MBA? Now, as i have taken Admission in a Management Degree, should i do in I.T in specialization! Was my decision wrong or justified? i have no job experience, and have started it . shortly after b.tech?:confused::rolleyes: Is my decision right or completely wrong?

Is using a virtual machine safer??

Posted: 01 Sep 2010 09:20 AM PDT

Using a virtual machine is safer or not???
does it have any impact on the system???

Quick Format vs Full format

Posted: 01 Sep 2010 08:43 AM PDT

what is the difference between quick format and full format??
which one is better and why???

How to do ccnp??

Posted: 01 Sep 2010 08:38 AM PDT

please suggest me how to get ccnp certification and from where to get...??
which is the best place and what will be its durations and scopes...

Http vs Https

Posted: 01 Sep 2010 08:25 AM PDT

What is the difference between http and https??
why do some sites show http and some https??
what is the reason....

ip.access bring picocells to India with Bharti Airtel

Posted: 01 Sep 2010 08:24 AM PDT

1 September 2010 –ip.access (ip.access: the leaders in picocells and femtocells for optimized GSM, GPRS, EDGE & 3G network coverage - The home access femtocell extends your 3G coverage into the home. -), the multi-award winning UK-based developer of picocell and femtocell solutions, today announced that it has been chosen by Bharti Airtel to supply its nanoGSM® picocells for deployment across India. Bharti Airtel is a leading global telecommunications company with operations in 18 countries across Asia and Africa and over 100 million mobile subscribers. After an extensive test and trial process, Airtel is deploying the ip.access nanoGSM picocell to deliver valuable extra mobile network coverage and capacity to its business customers, exactly where needed on their premises. This means that Airtel's business customers can make use of faster and more dependable voice and data services, wherever they are on-site.

The ip.access nanoGSM picocell is the market-leading solution for delivering enhanced in-building GSM services, which can be quickly and easily deployed for high-value enterprise customers. It has lower capital and operating costs than other in-building coverage solutions, with all the backhaul traffic efficiently carried over an existing IP connection.

"Our new agreement with Bharti Airtel is a massive achievement for ip.access, which puts us at the heart of one of the world's fastest-growing and most dynamic cellular markets," said ip.access CEO Stephen Mallinson. "This new deal underscores our global leadership in the market for in-building cell infrastructure, working with the world's leading mobile operators to improve network performance and deliver high-quality services to subscribers."

- ENDS -

About ip.access
Based in Cambridge, UK, ip.access ltd (www.ipaccess.com) is a leading manufacturer of cost-effective picocell and femtocell infrastructure solutions for GSM, GPRS, EDGE and 3G. These solutions bring IP and cellular technologies together to drive down costs and increase coverage and capacity of mobile networks.
ABI Research ranks ip.access as the world's number 1 picocell vendor; its nanoGSM® and nano3G™ picocell solutions provide 2G and 3G coverage and capacity for offices, shops and (using satellite backhaul) passenger aircraft, ships and remote rural areas. nanoGSM is the world's most deployed picocell, with live installations in more than 50 networks around the world and growing.
ip.access is also the company behind the multi-award winning Oyster 3G™ femtocell technology, which dramatically improves the user experience for 3G services at home. Oyster 3G is the core femtocell technology in AT&T's 3G MicroCell.
ip.access counts Scottish Equity Partners, Rothschild Gestion, Intel Capital, Amadeus Capital Partners, ADC, Cisco, Qualcomm and Motorola Ventures among its shareholders.

FOR FURTHER INFORMATION PLEASE CONTACT:
Kevin Taylor
Robertson Taylor PR
kevin.taylor[at]robertsontaylorpr[dot]com
m: +44 7850 858 291
skype: +44 203 239 5005

Distributed on behalf of ip.access by NeonDrum news distribution service (http://www.neondrum.com)

Career in electrical & electronics engineering

Posted: 01 Sep 2010 07:29 AM PDT

Hi:)

Iam an Electrical & Electronic engineering student.What are the future careers for my field .Also i want to know what are the higher studies in this field.
As iam doing my engineering now what are the part time courses that i can join now:smile:

How to create a computer virus??

Posted: 01 Sep 2010 06:35 AM PDT

I found many viruses in my computer..............
But I never come to its programming.......
I want to see its programming.......How it is programmed...............
Me very eager to know this.........

Please help me to get that.............

Regards,
Vipul

Scope in Electronics & Communication Engineering

Posted: 01 Sep 2010 04:58 AM PDT

special scopes after elect&telecommunication engineering:confused:

CEoM August 2010 is CEan aj_onduty!

Posted: 01 Sep 2010 04:51 AM PDT

Official Announcement: http://www.crazyengineers.com/forum/...st-2010-a.html

Discuss in this thread. :)

Congratulations Ajit! Keep up the good work!

*Quick Heal* CEan Of The Month August 2010 is...

Posted: 01 Sep 2010 04:50 AM PDT

Quick Heal CEan of the month August 2010 is...

:happy:CEan - aj_onduty:happy:


CEan aj_onduty aka Ajit joined CE on 24th August 2010 and has over 90+ useful posts to his credit. An electrical engineer just graduated, Ajit is currently undergoing training at a private firm. He's one of the fastest CEans who's impressed everyone with his contribution to CE Forums in such a short period!

We are proud to have you on CE, Ajit! :cean:

Quick Heal Total Security 2010 [10 in 1 protection for PC!]
& Special, super awesome, CEan of The Month T-Shirt

CEan of the Month Title Sponsors: Quick Heal [ Click to visit Quick Heal ]


We thank our CEan of the Month Title Sponsors Quick Heal for sponsoring their top notch product - Quick Heal Total Security 2010 [10 in 1 Protection for PC!]
Posted by at No comments:

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

Mobile phones in a petrol bink

Posted: 01 Sep 2010 12:27 AM PDT

We often see petrol bunks carrying the sign, "Please switch offf your mobile phones".. How come the concept of EM waves pose a threat to petrol? :confused:

VLSI Problem - Need Solution

Posted: 31 Aug 2010 10:54 AM PDT

Design a CMOS inverter chain as a clock buffer which drives the first stage of clock tree with equivalent interconnect parasitic capacitance of 1nF. The input gate capacitance of the inverter is 50fF. Device model parameter and unit equivalent resistance (average equivalent resistance may be used) can be found in the unified model. The unit capacitance is 15fF and gamma(r) = 1.

(1) Find the number of stages required when the effective fan-out are e, 4 and 6,respectively. Calculate the corresponding inverter chain delay.

(2) Which case in (1) gives the lowest path delay? Estimate the W of the last inverter in the chain (L=0.25mm). Assume that the first inverter has device sizesof W/L=2 for PMOS and W/L=1 for NMOS.

(3) Estimate the total dynamic power dissipation if the clock frequency is 1GHz and VDD = 2.5V

================================================== ==============
P.S. I need the solution for part (b).. Getting absurd result.. Tried everywhere on my own... Finally to CE :)

Cheers,
Prakash

Controller circuit for automatic surge flow irrigation

Posted: 31 Aug 2010 09:30 AM PDT

hi members,
i need the circuit diagram and components for building a controller circuit for automatic surge flow irrigation .does any one suggest me where i can get the circuit diagram:smile:
Posted by at No comments:
Subscribe to: Posts (Atom)