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Ncert Sample Papers Of Math, Science, Social Science And English

  • Posted on October 10, 2017 at 11:09 pm

When you look up for answers to the questions in the sample papers you are bound to read and re-read the texts. Many of the answers which are inferential will compel you to study the whole chapter or chapters. You will require to go back and forth of the text as you read to find answers. That will ensure in the course that you go through many rounds of reading and comprehending the text.

Math sample papers, social science sample papers, or English sample papers what do they involve you to do? The questions in the papers make a compelling demand upon you to respond with the correct answers or solutions in case of maths and English grammar. The skill sets you require for each of them are different. In the case of maths you need to focus on the understating of concepts, abstract thinking, and draw from the elements of the hypothesis. For social science you need efficient and wider reading skill even from supplementary sources and also has to depend upon your memory retention power of dates, facts, names of people and places. In case of language you need to understand the perspective of the author in bringing about the situation and efficient of language skills and rich vocabulary.

Solving the NCERT sample papers for any of the subjects can subtly bring these skills set unknowingly into your working. Gradually your hand and heart along with your head will start bringing together these attributes into you and make them part of life. Especially, if you are in the middle school or high school, these sample question paper as they cover your entire syllabus can be an efficient method to involve it as an essential tool your self learning process. If you have been using these papers in your self learning regularly since your Class VI year of schooling you have understood its utility and will make use of them in Class X and Class XII where you need to face the board. But if you are one of those late risers then you use them even at this stage and reap the benefits.

NCERT Paper including, math sample papers, social science sample papers, English sample papers are easily available online. While CBSE portal give only one set of model paper, there are many education portals that provide a collection of these sample papers to carry on your unending exercise with innumerable permutation and combination to assist your practice. These papers are available on these sites at multiple levels differentiated by the complexity.

Edusocial corners or sites combining social networking with online education features are making a great headway into supplementing school learning. These sites provide e learning tools and with other networking features with expert support.

Mixed Integer Programming

  • Posted on October 10, 2017 at 8:44 am

An Integer Programming problem is a mathematical optimization problem of which some or all of the variables are limited to be integral numbers. In a lot of settings the term Integer Programming refers to Integer Linear Programming also known as mixed integer programming. Integer programming is NP-hard. A special case is the 0-1 integer linear programming, in which the unknown values are binary. This is one of the 21 NP-complete problems of Karp.

In linear programming problems, all the variables are real numbers. In problems constrains and the function remain linear, but some or all of the variables are integers. So while linear programming has continuous variables, Integer programming has discrete (integer) variables and Binary Integer programming problems have binary variables. Mixed Integer programming problems have discrete and continuous variables, examples are numbers, 0/1 decisions. Non-linear conditions can be formulated as linear. (if-then conditions) Integer problems are much harder to solve than continuous problems. Discrete problems are often NP-complete. (no polygonal algorithm) The amount of solutions is limited in most cases, but limited can still be a large number.

Some examples of Integer Programming problems are: designing distribution networks, transportation planning, determination of series size in production, shift-schedules, frequency assignment in telecommunication, gate distribution in the aviation industry and determining the consistency of software releases.

To avoid any confusion, the simplex method, which can be used for normal linear programming problems, is not enough for solving integer linear programming problems. There are also no dual integer linear programming models and there are no sensitivity analyses that can be applied to integer linear programming models. In short; most of the common methods for solving linear programming problems, cannot be applied to integer programming.

A concrete example of an integer programming problem is the knapsack problem. In the knapsack problem there is a bag that can carry a maximum amount of kilograms. Then there are a few items that you want to fit in the bag. Every item has its own weight and its own value. The objective here is to a few items in the bag with the highest possible value possible. The decision problem form of the knapsack problem lies in the question: Can a value of at least X be achieved without exceeding the weight Y. The knapsack problem is a fairly simple and imaginative example of the knapsack problem. Most real life problems are far more complex.

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Computer File Storage – Safety Considerations

  • Posted on October 10, 2017 at 3:18 am

Whether you are running a website or a company which uses dozens of different computers, the method of file storage can be of vital importance to the future of your business. By now most people realize that backups of your important files and systems do not only need to be created on a daily basis, but they also must be stored in a secure location. Let’s take a look at some of the ways in which people store their computer files (we’ve ranked them in order from least secure to most secure).

Hard Drive

Every computer contains a hard drive that stores information magnetically. Typically the hard drive is unique to one type of computer; this is the type of file storage most commonly used by individuals, as it is quick and convenient. The downside of relying on a hard drive only file storage system is that if that one computer is compromised either through hacking or through an accidental power surge, or an Act of God, you risk losing all of your stored data. Therefore, this is by far the least safe way to save your files.

Outside storage

Individual users may complement their hard drive saved information by storing their files on separate media such as floppies or CDs. This provides an extra level of security, but the disadvantage again comes in the vulnerability of the media; these small units are easy to steal or lose, and also easy to damage.

File servers

File servers save data that comes from a lot of different, networked computers. They make it easy to access relevant information, but this is also their downfall; they are prone to hacking. In addition, their central location (usually in the same building as the computers from which the data is being sent), mean that an act of nature can wipe out all of the stored information.

Off site

By far, the best option for file storage as far as safety is concerned is off site. Off site storage facilities are fairly inexpensive, easy to upkeep, and keep your files stored in a place far enough away that should a calamity occur, your files are not all in the same vicinity. In addition, off site storage facilities for computer files are manned by very tight security, and usually have the best in technological support.