2 April 2014

நாளைய உலகம்: உஷாரான கூகுள்

இணையத்தில் ஒரு முகவரியை கொடுக்கும் போது அதற்கு முன்பு http அல்லது https என்ற வார்த்தைகள் இருக்கும். இணையத்தை பாதுகாப்பாக பயன்படுத்த வேண்டுமென்றால் httpக்கு பதிலாக https (hyper text transfer protocol secure) முறையை இயக்கத்தில் வைத்திருப்பது நல்லது.
ஜிமெயில் போன்ற இணையதளங்களில் http முறை பயன்படுத்தினால் ஒருவர் கணக்கை அடுத்தவர் கைப்பற்றுகிற ‘ஸ்னூப்பிங்’ பிரச்னை எளிதில் நிகழ்ந்துவிடக்கூடும். இதை தடுப்பதற்காக கூகுள் தனது ஜிமெயில் இணையதளத்தை https முறையில் இயங்கும்படி மாற்றியுள்ளது. அதே போல் பயனருக்கும் கூகுள் செர்வருக்கும் இடையே நடக்கும் தகவல் பரிமாற்றங்களை மறையாக்க ( encryption) தொழில்நுட்பத்தை பயன்படுத்தி பாதுகாக்க நடவடிக்கைகள் எடுத்துள்ளது.

Smartphone sales/ business development at Huawei India

Category: Sales / business development
Eligibility: Any college student
Stipend: Rs 5,000 per month
Location: Work from home

Testing Times

The Other Side of Testing
Most of us associate the word ‘testing’ with examinations that are imposed on us by schools and colleges. We believe that they are a rite of passage that we need to undergo in order to satisfy graduation requirements of educational institutions. Further, tests are paired with marks and ranks to gauge our performance relative to others. But testing need not necessarily be limited to externally mandated requirements or competitive purposes. In fact, self-testing, wherein we test our own abilities or knowledge, can be a powerful tool for learning that promotes understanding at a deeper and more sophisticated level.
Creating a test
In fact, creating a test itself can enhance your grasp of a particular subject. As a student, you typically prepare yourself to answer questions, but often posing questions can aid comprehension as you might see connections you didn’t notice before or come up with fresh insights or inferences. Further, generating a variety of types of questions in varying formats can help you see the material from new angles. Thus, your questions may require direct, inferential, analytical and open-ended responses. By framing exercises involving short-answers, extended essays, multiple-choice options, match the following or fill-in-the-blank activities, you will find that you can penetrate a text at multiple levels.
After creating your ‘test’, you may want to take a break before you actually take it. If time permits, you can do the test under exam-like conditions where you seclude and time yourself. But if you are pressed for time, you must at least try to answer the questions orally. When in doubt, refer to the text. If you still cannot answer a question, then you should probably consult your peers or professors.
Of course, it might be worthwhile to challenge yourself with one or two questions that you cannot answer readily. Even if you are not able to answer the questions, the very act of asking it will probably change the way you view the concept you are studying. Some questions may even pique your curiosity to seek further. In addition to asking your teachers for advice, you may be motivated to read beyond the confines of your text.
Improves delayed recall
Further, psychologists have documented an intriguing phenomenon called the “testing effect.” Professors Henry Roediger and Jeffrey Karpicke have found that the act of testing improves subjects’ delayed recall of material. Interestingly, testing was found to be superior at aiding students’ long-term retention compared to simply restudying content. In a paper published in Psychological Science, Roediger and Karpicke write, “Testing is a powerful means of improving learning, not just assessing it.” In another study, published in Science, Karpicke and Janell Blunt found that students who took a test were better at long-term recall than a group that engaged in concept mapping. Thus, once you have mastered a few chapters, it might be more prudent to test yourself instead of merely restudying the material. For reasons that are not entirely clear to psychologists, the act of retrieving information helps it stick better in your memory.
After you take your test, you will also have a better grip on how effectively you have studied. Were you able to answer most questions smoothly? If you were stymied by most of them, then you need to review the lesson again or probably even alter the way you study. Perhaps, you read the lesson in a cursory fashion without processing the content at a deeper level.
Self-testing can be an effective measure of your study habits and can sharpen your meta-cognitive awareness, which is a personal reflection of how your inner faculties operate. You will realise whether you have been an attentive reader or if your mind has been drifting during some sections. You may find that it is not enough for you to revise the content a couple of times; memorising dates in history may take longer and require more effort on your part. As you begin to fathom under what conditions you learn and remember best, and what you need to do in order to understand a concept deeply, you will be able to optimise your study habits.
While testing can be a solitary activity, you may also find it useful to exchange test questions with your peers. In fact, a whole class of test-makers will be a formidable challenge for any professor to beat. When you have 40 minds devising tricky or complex questions, you are bound to have a valuable question bank at your disposal.
Students sometimes attempt question papers from previous years when studying. While old question papers can definitely be used to test yourself, don’t deny yourself the opportunity of being a test-creator. Finally, you must remember that the goal of education is not to crack tests but to learn and extend yourself.
The author is director, Prayatna. Email: arunasankara@gmail.com

Mobile & Embedded App Development at mNm Infomedia Technologies

Category: Mobile app development
Eligibility: College students
Stipend: Rs. 2,500 – 7,500 per month
Location: Bangalore, Hubli, Pune

Web Developer at SellerworX

Web Developer at SellerworX

Category: Software
Eligibility: College students
Stipend: Rs. 5,000-15,000 per month
Location: Bangalore

Relationship management at PUR Health Online Services

Category: Client servicing /customer support
Eligibility: College students
Stipend: Rs. 5,000 – 20,000 per month
Location: Hyderabad, Bangalore, Chennai

Come to the Education Plus Fair

The Chennai edition of The Hindu Education Plus Fair will be held on April 4 and 5 at Chennai Trade Centre, Nandambakkam, between 10 a.m. and 5 p.m. The fair is organised with the objective of providing an opportunity for students to interact with institutions/professionals about various options available for higher studies.
Several leading colleges, IT training institutions, banks and financial institutions will be participating in the two-day fair. Youngsters may make their choice of courses from the plethora of information available on the latest developments in the higher education field.
N. Ram, Chairman of Kasturi and Sons, will deliver the inaugural address. T.V.Mohandas Pai, Chairman, Manipal Global Education Services, will be the chief guest for the event. Dr. G. Viswanathan, Founder and chancellor, VIT university, will preside. A comprehensive career guidance book, The Nxt Step, will be released on the occasion by the chief guest.
On both days, there are talks and presentations by experts from various fields and the floor will be open for Q and A sessions with the speakers. A free psychometric test will be offered by Bodhi on April 5, 3 p.m.
The fair will be a platform to showcase education opportunities across the country and facilitate representatives of institutions to interact with students. VIT University is the presenting sponsor. Bharath University, Dr. MGR University and Vel's University are associate sponsors.
For details and reservations for stalls, contact 98414-16933

Countdown JEE

With the exam just a week away, here are tips to help you crack the test.

The focus now shifts to the Joint Entrance Examination (JEE) which will decide the course of many an engineer aspirants’ career. The paper pen phase of the 2014 edition of the JEE-Mains is scheduled for April 6 and the online examinations will be conducted on April 9, 11, 12 and 19. Let’s look at some last-minute tips for the largest engineering entrance examination in India. The duration of the examination is three hours and will test the candidates on physics, chemistry and mathematics.
Pay attention
Traditionally, mechanics has been the heavy weight test area in physics. Definitely include the areas such as laws of motion, rotational motion, work, power, energy and kinematics in the plan for the final revision. Also do keep in mind that these areas are not compartmentalised as they are presented in your text books. It pays to complete your revision in all the areas mentioned with a comprehensive look at the multiple choice questions you have had difficulty during the model exams. Pay attention to the units and dimensional formulae. Electrostatics, current electricity and magnetism forms the other important set of topics in physics. Together, these two sets of topics have accounted for more than 80 per cent of questions in several of the past editions of the exam. Application questions using Young’s modulus, Bernoulli’s principle etc. are relatively easy, and so, do pay special attention to these while revising. Compared to mechanics, the section on properties of solids and liquids involves more memorising. At the same time, the questions can be presented as a contextual case study.

Revisit the basics
Physical chemistry, organic chemistry and inorganic chemistry have taken up weightages in the ratio of 4:3:3 in the past several years of AIEEE/JEE-Mains examinations. While the questions in physical chemistry could be calculation intensive, the questions in organic and inorganic chemistry will require the ability to immediately bring to mind the several properties of compounds and the manner in which they react with other substances. Most students have one favourite area from among the three. While it is okay to start searching for questions from that area in the actual test, complete your revision in all areas. Many a time, students leave out questions from a less favourite area that could otherwise have been done with ease, just because they did not spend time on the last minute refreshing. It’s a good tactic to revisit the very basics of atomic structure and chemical bonding.
Since you have learned this at the very beginning of Class XI, it will require preparation. Chemical thermodynamics and chemical kinetics is a test area students make relatively more mistakes while actually getting into the final solving phase. Special attention is required for studying the rates of reactions and the concentration of reactants.

Capture standard formats
Calculus – starting from differentiability, integral calculus and differential equations has remained the single largest test area. These topics together have accounted for just over 40 per cent in several versions of the examination over the years since its inception in 2004. The other heavyweights in mathematics are trigonometry, coordinate geometry and complex numbers. There are several patterns of questions — those that are called standard formats. Your revision should capture all the standard formats of equations so that you are able to immediately identify them in a question. This is almost one-third of the work done. If you are able to generally fix the direction of the question, the remaining task will be to work out the specific problem with respect to the variables mentioned.
Margin for error in this examination where more than 10 lakh students compete for admission is very limited. Just a couple of questions can make a big difference in your overall rank. So prepare well and let it show in your performance.

The writer is director, T.I.M.E. Chennai