Thursday, June 2, 2011

CrazyEngineers Forum

CrazyEngineers Forum

New car technology can stop drunks from driving

Posted: 02 Jun 2011 01:06 PM PDT

Government officials have given a tentative thumbs up to a new technology for cars that would render the concept of driving while drunk a non-starter — literally.

On Friday, U.S. Transportation Secretary Ray LaHood and David Strickland, head of the National Highway Traffic Safety Administration, were on hand when researchers publicly demonstrated a car-embeddable sensor system that cleverly locks down the engine if it detects that the driver's blood alcohol level was above the legal limit.

Through the use of strategically placed sensors in places like the steering wheel and door locks, the North America Driver Alcohol Detection Systems for Safety, created by QinetiQ, a research facility in Waltham, Massachusetts, would analyze a driver's skin or breath to determine a driver's level of intoxication.

The system is being promoted as an alternative to alcohol ignition interlock systems that force drivers to blow into a breathalyzer type device before the car can be started. The cumbersome ignition systems are sometimes used by drivers as part of a DUI conviction.

After the demonstration, Strickland and LaHood gave a positive, yet cautious, assessment of the technology:

The technology is "another arrow in our automotive safety quiver," said LaHood, who emphasized the system was envisioned as optional equipment in future cars and voluntary for auto manufacturers.

David Strickland, head of the National Highway Traffic Safety Administration, also attended the demonstration and estimated the technology could prevent as many as 9,000 fatal alcohol-related crashes a year in the U.S., though he also acknowledged that it was still in its early testing stages and might not be commercially available for 8-10 years. (Associated Press)

And since the system will likely fall under the optional category for automakers, the technology must prove itself to be reliable enough to not mistakenly prevent the more sober folks from starting their cars to have any hope of being adopted by the masses.

The systems would not be employed unless they are "seamless, unobtrusive and unfailingly accurate," Strickland told the Associated Press.

A test showed that a 20-something year-old woman weighing 120 pounds had a blood alcohol content level of .06, just below the legal limit of .08, after drinking two 1 1/2 ounce glasses of vodka and orange juice about a half hour apart.

Even if the technology is perfected, it'll still be a tough sell. Freedom and the means to move about freely are cherished American values. So my guess is that there are very few people who would readily embrace the technology because of the off-chance that a slight malfunction would cause them to be late or, at worst, stuck somewhere.

But with an increasingly greater awareness of the dangers of drunk driving, the promise of such a system shows that technological solutions are in place should the tide turn.

Source: New car technology can stop drunks from driving | SmartPlanet

a programming project

Posted: 02 Jun 2011 12:21 PM PDT

I want to write a program that receive a mathematical expression including "tan","sin","cos","cot","ln","+","-","*","/","power""d_x(derivative)" and any other function that user defines it in a seperate file and calculate the result.
as far as I now I must use "token" method and for derivative of a function I must use tree_method structure.
I thanks anyone that can help me as soon as possible in the algorithm of the project!

hai CEans . I can't find answer for repeated question asked in many interviews.

Posted: 02 Jun 2011 11:02 AM PDT

. A questions like "Why are you interested in coming into IT sector after pursuing ECE major etc. Can u please guide me through these kind of common yet vague questions during interviews.

Thank you
Have a nice day..

BioMedical Engineering

Posted: 02 Jun 2011 08:18 AM PDT

:happy:Hey crazy engineers..:happy:
Can someone help me out by giving some project ideas related with rehabilitation,advanced technologies in Medical Devices?
It would be a great help if u help me out.:|
Who knows even your idea can be a new invention that will be helping poor peoples:cool:.
Waiting for positive feedback guys..
thank you:D..

Cryptography and network security

Posted: 02 Jun 2011 08:07 AM PDT

Which are the best books and online material to refer for cryptography and network security? I'm a complete beginner to these topics... Please suggest a simple and easily understandable source... Thank you very much :)

How many CEans read voiCE?

Posted: 02 Jun 2011 07:54 AM PDT

Friends,
A few days ago, I came across a post by The_Big_K. Since then I have been reading voiCE regularly which has the latest tech updates of all branches and even entrepreneurship too.
I wish to know how many CEans regular or irregular, read voiCE?

Actually one day I was searching for some news and I came across this tech blog. This is even before the post by The_Big_K.

I love it. How about you? ;)

The Flying Monkeys Girl Scout team wins prize for prosthetic hand

Posted: 02 Jun 2011 07:27 AM PDT

PVC pipes manufacturing.

Posted: 02 Jun 2011 07:09 AM PDT

Hi There,

I think the ease of production PVC plastic means that is easy to form sheets of any thickness and sizes. The PVC plastic sheets can be heat-formed, shaped and fabricated to make ducts, hoods, and much more depending on their intended use. The sheets can resist most chemicals though it is necessary to confirm the range of chemicals that can be withstood thus from the manufacturer.


Thanks lot advance
Damacio Huang

Exclusive 3D Reconstruction of the Djedi Robot Findings in the Great Pyramid

Posted: 02 Jun 2011 06:57 AM PDT



As part of our Passion for Innovation sponsorship program, Dassault Systèmes partnered with Scoutek and Leeds University, UK, in 2009, supporting the Djedi Robot Mission to explore the mysterious shafts in the Great Pyramid.

If the Passion for Innovation initiative allows us to provide financial support for this innovative project our strength lies, above all, in our ability to add our 3D engineering competency and cutting-edge 3D technology to such missions.

My team and I are proud to be a part of this cross-disciplinary and innovative team, selected by the Egyptian Supreme Council of Antiquities to send a robot probe named Djedi into the Queen's Chamber shafts and explore parts of the Great Pyramid hidden from human eyes for 4,500 years.

Continue reading...Djedi Robot Discovers New Markings in the Great Pyramid | 3D PERSPECTIVES

eCar Design Challenge

Posted: 02 Jun 2011 06:49 AM PDT

Dassault Systèmes, in collaboration with 40 Fires.org, is hosting an international design challenge for professionals, students and design enthusiasts.
For more details: eCar Design Challenge | 3D PERSPECTIVES

Rubik's cube solved in 10.69 seconds!!!

Posted: 02 Jun 2011 06:39 AM PDT

How much time you require to solve a Rubik's cube? A record breaking final year project by University of Swinburne students makes it possible to solve it in 10.69 seconds MAX!!!
Follow the link to read the news.
The name of robot is RUBY :cean:

Rubik

Also see this video->Isn't it awesome? :thumbsup:

Mahindra GEO and Maruti 800 steering dimensions required

Posted: 02 Jun 2011 06:32 AM PDT

Friends,
I urgently require The steering mechanism dimensions for all parts of Mahindra GEO and Maruti 800.
Please, can you give me those? You can paste a link directing me to the dimensions page.

Thanking you in advance,
Ishan Topre

How to teach a geek to meditate...:p

Posted: 02 Jun 2011 04:47 AM PDT

Found it on net. Nice thinking though...:p

Creating Plumbing System — AutoCAD MEP 2011

Posted: 02 Jun 2011 04:25 AM PDT

This video shows how to create a 2D schematic plumbing system.

Information Technology (IT) Syllabus For GATE 2012

Posted: 02 Jun 2011 04:24 AM PDT

Following is the syllabus for GATE I.T. Students:

Engineering Mathematics

Mathematical Logic: Propositional Logic; First Order Logic.
Probability: Conditional Probability; Mean, Median, Mode and Standard Deviation; Random Variables; Distributions; uniform, normal, exponential, Poisson, Binomial.
Set Theory & Algebra: Sets; Relations; Functions; Groups; Partial Orders; Lattice; Boolean Algebra.
Combinatorics: Permutations; Combinations; Counting; Summation; generating functions; recurrence relations; asymptotics.
Graph Theory: Connectivity; spanning trees; Cut vertices & edges; covering; matching; independent sets; Colouring; Planarity; Isomorphism.
Linear Algebra: Algebra of matrices, determinants, systems of linear equations, Eigen values and Eigen vectors.
Numerical Methods: LU decomposition for systems of linear equations; numerical solutions of non-linear algebraic equations by Secant, Bisection and Newton-Raphson Methods; Numerical integration by trapezoidal and Simpson’s rules.
Calculus: Limit, Continuity & differentiability, Mean value Theorems, Theorems of integral calculus, evaluation of definite & improper integrals, Partial derivatives, Total derivatives, maxima & minima.

Formal Languages And Automata

Regular Languages: finite automata, regular expressions, regular grammar

Context free languages: push down automata, context free grammars

Computer Hardware

Digital Logic: Logic functions, minimization, design and synthesis of combinatorial and sequential circuits, number representation and computer arithmetic (fixed and floating point)

Computer organization: Machine instructions and addressing modes, ALU and data path, hardwired and microprogrammed control, memory interface, I/O interface (interrupt and DMA mode), serial communication interface, instruction pipelining, cache, main and secondary storage

Software Systems
Data structures and Algorithms: the notion of abstract data types, stack, queue, list, set, string, tree, binary search tree, heap, graph, tree and graph traversals, connected components, spanning trees, shortest paths, hashing, sorting, searching, design techniques (greedy, dynamic, divide and conquer, Algorithm design by induction), asymptotic analysis (best, worst, average cases) of time and space, upper and lower bounds, Basic concepts of complexity classes – P, NP, NP-hard, NP-complete.

Programming Methodology: Scope, binding, parameter passing, recursion, C programming – data types and declarations, assignment and control flow statements, 1-d and 2-d arrays, functions, pointers, concepts of object-oriented programming - classes, objects, inheritance, polymorphism, operator overloading.

Operating Systems (in the context of Unix): classical concepts (concurrency, synchronization, deadlock), processes, threads and interprocess communication, CPU scheduling, memory management, file systems, I/O systems, protection and security, shell programming.

Information Systems and Software Engineering: information gathering, requirement and feasibility analysis, data flow diagrams, process specifications, input/output design, process life cycle, planning and managing the project, design, coding, testing, implementation, maintenance.

Databases: E-R diagrams, relational model, database design, integrity constraints, normal forms, query languages (SQL), file structures (sequential, indexed), b-trees, transaction and concurrency control.

Data Communication and Networks: ISO/OSI stack, transmission media, data encoding, multiplexing, flow and error control, LAN technologies (Ethernet, token ring), network devices – switches, gateways, routers, ICMP, application layer protocols – SMTP, POP3, HTTP, DNS, FTP, Telnet, network security – basic concepts of public key and private key cryptography, digital signature, firewalls

Web technologies: Proxy, HTML, XML, basic concepts of cgi-bin programming.
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