New 'Super Stretchable' Conduction Wires For Cell phones

New conduction wires that can be stretched up to eight times their original length and used in headphones and phone chargers have been developed.

Scientists from North Carolina State University started with a thin tube made of an extremely elastic polymer and then filled the tube with a liquid metal alloy of gallium and indium, which is an efficient conductor of electricity.

 "Our approach keeps the materials separate, so you have maximum conductivity without impairing elasticity. In short, our wires are orders of magnitude more stretchable than the most conductive wires, and at least an order of magnitude more conductive than the most stretchable wires currently in the literature," said Dr Michael Dickey, assistant professor and co-author of the study.

The study was published in Advanced Functional Materials.

Code for Dining Philosopher's Problem

Code for Dining Philosopher's Problem

#include

#include

#include

#define N 5

#define THINKING 0

#define HUNGRY 1

#define EATING 2

#define LEFT (ph_num+4)%N

#define RIGHT (ph_num+1)%N

sem_t mutex;

sem_t S[N];

void * philospher(void *num);

void take_fork(int);

void put_fork(int);

void test(int);

int state[N];

int phil_num[N]={0,1,2,3,4};

int main()

{

    int i;

    pthread_t thread_id[N];

    sem_init(&mutex,0,1);

    for(i=0;i

        sem_init(&S[i],0,0);

    for(i=0;i

    {

        pthread_create(&thread_id[i],NULL,philospher,&phil_num[i]);

        printf("Philosopher %d is thinking\n",i+1);

    }

    for(i=0;i

        pthread_join(thread_id[i],NULL);

}

void *philospher(void *num)

{

    while(1)

    {

        int *i = num;

        sleep(1);

        take_fork(*i);

        sleep(0);

        put_fork(*i);

    }

}

void take_fork(int ph_num)

{

    sem_wait(&mutex);

    state[ph_num] = HUNGRY;

    printf("Philosopher %d is Hungry\n",ph_num+1);

    test(ph_num);

    sem_post(&mutex);

    sem_wait(&S[ph_num]);

    sleep(1);

}

void test(int ph_num)

{

    if (state[ph_num] == HUNGRY && state[LEFT] != EATING && state[RIGHT] != EATING)

    {

        state[ph_num] = EATING;

        sleep(2);

        printf("Philosopher %d takes fork %d and %d\n",ph_num+1,LEFT+1,ph_num+1);

        printf("Philosopher %d is Eating\n",ph_num+1);

        sem_post(&S[ph_num]);

    }

}

void put_fork(int ph_num)

{

    sem_wait(&mutex);

    state[ph_num] = THINKING;

    printf("Philosopher %d putting fork %d and %d down\n",ph_num+1,LEFT+1,ph_num+1);

    printf("Philosopher %d is thinking\n",ph_num+1);

    test(LEFT);

    test(RIGHT);

    sem_post(&mutex);

}

Note: Don’t forgot to link pthread when compiling. It can be done by compiling with -lpthread option. eg: gcc -lpthread philospher.c

OUTPUT

Philosopher 1 is thinking
Philosopher 2 is thinking
Philosopher 3 is thinking
Philosopher 4 is thinking
Philosopher 5 is thinking
Philosopher 1 is Hungry
Philosopher 1 takes fork 5 and 1
Philosopher 1 is Eating
Philosopher 2 is Hungry
Philosopher 3 is Hungry
Philosopher 3 takes fork 2 and 3
Philosopher 3 is Eating
Philosopher 4 is Hungry
Philosopher 5 is Hungry
Philosopher 1 putting fork 5 and 1 down
Philosopher 1 is thinking
Philosopher 5 takes fork 4 and 5
Philosopher 5 is Eating
Philosopher 3 putting fork 2 and 3 down
Philosopher 3 is thinking

First cloud operating system could lighten our laptop

If one cannot decide between Windows or Mac for a new laptop then an experimental new cloud-based operating system called TransOS could let one switch between them on a whim.More and more software is migrating to the cloud, but to make a computer run we still need a basic OS on its hard drive. China have claimed that they have the first cloud-only OS. It runs on remote servers and treats traditional OSes like Windows as a resource that can be streamed to a laptop - or even phone, smart TV, fridge or other appliance - on demand.

Instead of a full version of Windows, our laptop would need to run only enough software to get it started and connected to the internet - making it effectively a "dumb terminal". TransOS would then sit as a thin layer of software sandwiched between the laptop's bare essentials and a virtual version of a conventional OS - along with all the usual programs and applications - streamed from the cloud.

Since only the parts of the OS that are required at any given time are delivered to the machine, the researchers believe that TransOS could work with low-powered computing devices as well as powerful desktop boxes.

Graphene Could Usher in Flexible, Ultra-Slim Gadgets

Graphene, a carbon-based material, might be stuffed into our pocket or wrapped around our wrist in the not-too-distant future.

According to the American Chemical Society, graphene is a “wonder material” 100 times stronger than steel and is so thin that a single ounce of it could cover 28 football fields. It could also usher in a new era of ultra-slim and fully flexible gadgets.

It is now currently under development for use in flexible solar panels “that could be used to cover the outside surface of a building, in addition to the roof.” And as soon as these solar panels actually become a viable product, cell phones would be next up on the flexible list. Touch screens made with graphene as their conductive element could be printed on thin plastic instead of glass, so they would be light and flexible, which could make cell phones as thin as a piece of paper and foldable enough to slip into a pocket. Because of graphene’s incredible strength, these cell phones would be nearly unbreakable. Graphene could also be used to create bionic implants, too, which are essentially electronic devices that are placed inside the human body.

Interesting Facts 

Russian Satellite Takes 121 Megapixel Image And Video Of Earth

A Russian weather satellite has taken a 121 megapixel image of planet Earth, over 22,000 miles above the surface. The image was taken by Russia’s Electro-L satellite, and unlike other images taken by spacecrafts, it was taken in one single shot. Each pixel in the image represents a little over a half-mile of the Earth’s surface. The Electro-L satellite captures a picture of this quality every half-hour to monitor the weather on Earth. The image uses a combination of visible and near-infrared wavelengths to make-up the image, so vegetation is seen as red, rather than green.A time-lapsed video has been created using images taken by the Electro-L satellite’s 121 megapixel camera. The video is composed of about 350 shots.

Wozniak Sold His Scientific Calculator to Raise Capital.

In order to raise enough money to buy parts and build the first few orders of the Apple I, Steve Jobs sold his Volkswagen van and Wozniak, then an HP employee, sold his Hewlett-Packard 65 scientific calculator for $500.Those born after 1990 might be surprised that a mere calculator would raise any kind of capital, but back in 1976, a scientific calculator cost as much as a laptop does today, and the HP-65 was in fact marketed as “the smallest programmable computer ever.”

Utkarsh event - Overnight Programming Challenge

Winner of the event is:

1st Manasie Bajpai  (CSE III year)

Upcoming Events:

“ C Workshop”

Utkarsh presents the C workshop - a workshop exclusively meant for the 1st yearites.

Date : 9^th , 15^th and 16^th October

Time : 4:45 pm to 7:00 pm

Venue : Room no. 01,NFET

“ CARTE BLANCHE- a paper presentation”

  

"Fill your paper with breathings of your ideas and explorations"
Team Size: maximum 3

Date : 17^th October 2012

Submit the abstract by 11^th October on any of the following topics:

1.Android OS

2.Animatronics

3.Applications of LED for domestic applications

4.Attacks on smart cards

5.Autonomic computing

6.Biocomputers

7.Anti jamming wireless systems

8.Applications of genetic algorithms in network routing

9.Bio sensors (photonics)

10.Automatic Video Surveillance Systems

11.Nano computing

12.Software testing and quality assurance

13.Software advances in wireless communication(cognitive radio, dynamic spectrum access etc.)

14.Mobile virtual reality service

15.Sniffer for detecting lost mobiles

OR ANY TOPIC OF YOUR CHOICE!!!

For more details visit: https://www.facebook.com/events/381456691922658/

“ Roll Camera and Action “

Do you have mad video-making skills?How about just a camera and a little bit of spare time to get creative...or just download the pics and make a movie...

Date: 18^th october
Time Duration: upto 10mins
Team Size: upto 3 members

Topic:-"Technology in every day life"
Software:-Picasa or windows movie maker or powerpoint

8 Things the iPhone 5 Still Can't Do 

1.NFC for mobile payments
Instead of building NFC into the iPhone, Apple would rather have you use its Passbook system, which lets lets users store tickets, gift cards, boarding passes, and the like.It can handle some (but definitely not all) of the tasks that you might use NFC for. 

2.An improved texting solution on the keyboard, like Swype-
Swype is something of a mainstay on Android phones. Instead of tapping out your texts letter by letter, you can drag your finger over them without lifting it. The end result is that you get your message out much more quickly.

3.SD card support for extra storage-
We'd like to be able to extend our device's storage capability beyond the 64 GB maximum. History suggests that external SD card support isn't going to be in a mobile Apple device any time soon.

4.A 128 GB option-
The iPod Classic offered users 160 GB of music and video capacity. Many people (ourselves included) had no problem filling it right up.
Now that the iPhone is an easy replacement for your old iPod, we'd love to be able to carry the same amount of content around with us without having to pick and choose what stays at home.

5.Non-proprietary dock connection
We've never understood why our iPhones can't use a standard USB port and a standard USB cable to sync. Now the iPhone 5 introduces a new micro-dock connection requiring the use of its own special cable. If you want to use your old sync cables, you have to buy this $29 adapter.

6.A micro-HDMI port
Once again, if you want to get video off of your phone, it requires the use of a special adapter. (Unless you buy a $99 Apple TV.) The Kindle Fire HD and several Android phones use a micro-HDMI port, letting you run a cable straight from your tablet to the television.
This makes it easier, better, and more affordable for the user.

7.Replaceable battery
The battery life on the iPhone 5 has seen some nice improvements, but for the power users who are glued to their phones all day, it won't suffice. We'd love to be able to carry an additional fully-charged iPhone battery that we could pop in whenever the first one bites the dust.

8.While we're at it, better battery life!
The iPhone 5's battery life is about the same as the iPhone 4S'. Yes, it has a bigger battery, but the new 4G LTE radio and bigger screen use up a lot of that extra power. We wish Apple had included a better battery in the iPhone 5 like the one on Motorola's Droid Razr Maxx. The Razr Maxx can last several hours longer than the iPhone 5.

Utkarsh Event - MYSTIFIER

On 4th october, Utkarsh organised an event Mystifier which ended out to be an exciting event. Utkarsh gave out 35 brain teasers to the students. These were to check their  aptitude, programming skills, general knowledge.Some entertainment questions were also their.The smartest answers in shortest period of time made the students winners..The event turned out to be good success and winners of the events are:

1st   Charu Verma ( IIIrd year CSE-D )

2nd  Divya Kashyap (IInd year CSE-B)

3rd  Anoushka Nayak (IInd year IT)

Overnight  Programming Challenge

6th-7th October 2012

4:30 p.m.-2:30p.m.

Submit your answers on blog.utkarsh@gmail.com or to any utkarsh member before 2.30p.m. on 7th October 2012

SECTION  1 : CRACK  THE  PATTERN - WRITE  AN ALGORITHM OR A PROGRAM  IN  C , C++  OR  JAVA TO  PRINT  THE  FOLLOWING  PATTERNS  

(5 marks each)

1.      

4   3   2   1   2   3   4

     3   2   1   2   3

          2   1   2

               1

          2   1   2

     3   2   1   2   3

4   3   2   1   2   3   4

      2.  

4 3 2 1 2 3 4

3 3 2 1 2 3 3

2 2 2 1 2 2 2

1 1 1 1 1 1 1

              2 2 2 1 2 2 2

              3 3 2 1 2 3 3

              4 3 2 1 2 3 4

3.  

     1   2   3   4   5  

                         6

                         7

                         8

                         9   10   11   12   13

                                                   14         

                                                   15

                                                           16

4.      

1   2     3      4    5

             16  17   18   19   6

             15  24   25   20   7

             14  23   22   21   8

             13  12   11   10  9            

                        

SECTION 2 : FIND THE OUTPUT

(5 marks each)

5. 

#include

void main()

{

    static char *a[]={"happy","birthday","mahatma","gandhi"};

    char **1[]={a+3,a+2,a+1,a},***z;

    z=1;

    ++z;

         printf("%s",**z+1);
     }

   A. ahatma                                                                         B. appy

   C. mahatma                                                                      D. irthday

6.

#include

struct mybox{int length,breadth,height;

}

void dimension(mybox m)

{printf("%d x %d x %d",m.length,m.breadth,m.height);

printf("\n");

}

void main()

{

mybox b1={10,15,5},b2,b3;

++b1.height;

dimension(b1);

b3=b1;

++b3.length;

b3.breadth++;

dimension(b3);

b2=b3;

b2.height+=5;

b2.length--;

dimension(b2)

}

7.      class q16{

public static void main(String args[]){

int count=0;

for(int i=0;i<3 i="i" span="span">

for(int j=0;j<4 j="j" o:p="o:p">

    for(int k =0;k<5 k="k" o:p="o:p">

             ++count;

if(i==1 && j==2 && k==3) break resume;

 }

System.out.println(“\tcount=”+count);

}

}

}

8.      int i=0;

outer:

while(true)

{

i++;

inner:

for(int j=0;j<10 j="j" o:p="o:p">

i+=j;

if(j==3)

continue inner;

break outer;

}

continue outer;

}

System.out.println(i);

SECTION  3:  WHATZ THE ERROR?-PREDICT THE ERROR PRODUCED BY THE FOLLOWING CODE

(5 marks)

9.      public class While{

         public void  loop( ){

               int x=0;

while(1){System.out.print(“x plus one is”+(x+1));

}

}

SECTION  4: THE BIG QUESTION

(10 marks)

     10. A bank intends to design a program to display the denomination of an input amount upto 5 digits. The available denomination with the bank are of rupees 1000, 500, 100, 50, 20, 10, 5, 2 and 1.

Design a program to accept the amount from the user and display the break-up in descending order of denominations. (i.e. preference should be given to the highest denomination available) along with the total number of notes. [NOTE: only the denomination used should be displayed]

Also print the amount in words according to the digits.

EXAMPLE 1:

INPUT: 14856

OUTPUT: ONE FOUR EIGHT FIVE SIX

DENOMINATION:

1000 X 14 = 14000

500 X 1 = 500

100 X 3 = 300

50 X 1 = 50

5 X 1 = 5

1 X 1 =1

EXAMPLE 2:

INPUT: 235001

OUTPUT: INVALID AMOUNT