OMNeT and Network simulation – interesting job for freelancers

October 28, 2011 By Leave a Comment

omnet chartAt our website we had several jobs which include OMNeT and Network simulation. Many freelancers didn’t know nothing about that so we created one article for freelancers – to learn more about this.
OMNeT++
OMNeT++ is based on the component, the open-architecture, and modular framework of discrete event stimulation. The most popular use of OMNeT++ is in the stimulation of various networks. Along with that, it is also utilized for the stimulation of queuing network.
OMNeT refers to the “Omni-Network”. This software is registered by the public licensing of its own system that allows you to feel freedom of GNU Public License, but that can only be achieved in the non-commercial atmosphere.
By default, OMNeT isn’t a stimulator, but it rather acts as Stimulation-framework. Rather than having support for the computer networks, it helps in providing infrastructure to write network stimulations. Through this stimulation, a variety of applications are catered, most of which are the open source based. All the models are solely designed by the OMNeT++.

Network Simulation
Network simulation comes under the category of communication, and it refers to a technique where application structures the overall behavior of the network. This is done by measuring either the interaction of two network entities by mathematical formulas or playing back surveillances from the single network. A test lab can observe the total behavior of the networks with multiple applications along with their own services. In the test lab, environment’s different attributes are altered in a specific and controlled manner to analyze the working pattern of the network under various conditions. Simulation application when used in combination with different live applications to observe the end user performance, then this overall process is known as “network stimulation.”

Network Stimulator
A network stimulator refers to an application that is designed to copy the working of a computer network. The computer networks are structured with the stimulators. This is done to analyze the performance. After that, an option is given to the users through which they can modify the simulator according to their specific needs. Now days, simulators are designed to support latest protocols like UDP, WLAN, TCP, and Wi-Max.

Simulations
A majority of the marketable stimulators is GUI based, while others will require some integral commands to run. The state of the network is being explained by the network protocols. Trace files are an important output of the stimulations. The purpose of the trace file is to record every event so it can be utilized for the analysis. Certain stimulators come up with a default feature that can directly capture data from the production environment, and that can be from a specific month, day, or year.
A majority of the stimulator utilizes discrete event stimulation, which stores a detailed list of pending events. These events are then processed to work with some future events.

Network stimulation problems that are mostly relying on the theory of queuing are well worked with the stimulators of Markov chain. In these types of stimulators, there is no data related to the future events. This type of stimulation is normally faster than others but on the same side, it is less accurate too.
It is usually a tough ask to make a stimulation of a network. For instance, if the congestion is on the rise, then due to the high variance, it is very challengeable for the estimation of the average occupancy. To estimate the overflow buffer of the network, a very high would be required to find the answers.
Examples of network stimulators
Below are the main types of network stimulators.
1. Ns2/ns3
2. OPNET
3. NetSim

If you have some OMNeT and Network simulation job – you can post it on freelancer-job.com.
If you need some tutorials about some freelancer new skill – please ask us we will post it.
Enjoy !

Filed Under: Learn about programming, Thinking, Work from home business

Get Highest Paying Job and study Actuarial Science

May 20, 2011 By Leave a Comment

actuaryWhat is an Actuary?

An actuary is a professional who is adept in the field of mathematics, statistics, probability, finance and economics. He works out the amount that a company needs to charge on its clients when it makes the promise of paying them a fixed amount in future when some conditions arise. An ideal example is in the form of an insurance firm that requires you to pay a regular amount for a promise that they would pay you a fixed amount when you meet some future accident.

Compound Interests

Compound interests are the basics where the mathematics of actuarial science begin. In compound interest, the interest on the invested principal gets reinvested to the original principal every year. For example, when you invest $10,000 with a compound interest rate of 5% per year, the earning for the first year would be $500. The new interest for the second year would be derived by adding the interest with the principal amount for the first year. This would come to $10,500, which will be the principal at the start of the third year. And, when you want to calculate the amount of money that gets accumulated at the completion of twenty years, the following compound interest formula will help you.

If you want to find how much money you will have earned at the end of twenty years, then there is a formula for calculating compound interest.
A = P (1+i)a?
Here, A stands for the final amount to be received by you.
P stands for the starting principal
“I” stands for the rate of interest
“a” is the number of years for which you invested your money.

$50,000 for 20 years and final amount is $ 33,635,700

When $50,000 is invested for 20 years at a rate of compound interested of 10%, the final amount that would come into your pocket would be $33,637,500. This gives you a picture of what insurance firms are doing with your money, and how they are able to afford the huge salaries of the actuarial professionals.

Variables of Risks in the Equation

When other variables are added to the equation, the formula of compound interest can turn highly complicated. As an example, an insurance firm would always want to find out the risks they will have to face in case they have to pay their clients with entire amounts if one of the client dies before the investment period matures. There is no doubt that everyone dies, but older individuals have a higher chance of dying as compared to the younger ones. Hence, it is the job of the actuary to determine the amount of money to be charged by the insurance firm from all its clients so that they could pay the fixed amounts in future in case a condition arises.

Retrospective Reinsurance

Predicting the future about which nothing is known is a variable element, and it is this factor that makes an actuarial science course rich in the subject of mathematics. But, the job of an actuary may not always be to forecast the events of future, but it may just be limited to finding out the financial liabilities of events that have already taken place. And such liabilities are known as retrospective reinsurance. Most often, the work of the actuary may be around finding the reasons for developing new pricing of the products that the company is already selling.

Pension Fund Management

The above-mentioned example can give you a clear idea that an actuary is an expert statistician who performs duties of evaluation of risks for firms that operate in the field of banking, insurance and in other organizations that have a need to alleviate risks. A professional in actuarial science also has a huge demand in the field of pension fund management, with the major function being to predict future payouts and finding out present contributions.

Career in Actuarial Science

When you want to pursue a career in actuarial science, it would be required to do well in mathematics, which will help you to enter a university for undergoing a bachelors program in the subject. At the university, the following subjects will have to be studied in order to acquire the actuarial science degree:

1. Actuarial Mathematics
2. Actuarial Methods in Finance
3. Actuarial Mathematics – Life
4. Actuarial Theory of Pension Funds
5. Actuarial Methods in Finance
6. Analysis of Variance
7. Computational Methods
8. Applied statistics
9. Data Analysis
10. Economics
11. Elements of Linear Algebra
12. Elements of Accounting and Finance
13. Information systems
14. Financial Actuarial Investigations
15. Life Contingencies
16. Law in society
17. Mathematics of Demography and Graduation
18. Mathematical Methods
19. Ordinary Differential Equations
20. Methods in Calculus
21. Principles of Financial Management
22. Partial differential equations
23. Probability, Distribution Theory and Inference
24. Probability Modeling
25. Psychology
26. Programming Methodology
27. Risk Mathematics
28. Regression analysis
29. Statistical Theory
30. Sociology
31. Survival Methods
32. Stochastic Processes
33. Time Series analysis and Forecasting

Salaries of Actuaries

Eventually, you would be able to pass your examinations and receive a Bachelors degree in actuarial science, and then you would be able to move out and search for a job. And, there is a chance of 65% that your job would be in the field of insurance. The average annual salary of a new actuary can be something between $50,000 and $60,000. When you begin working, there are numerous certifications that would lead your to a number of examinations. And, this can range up to as many as nine exams.

And, with every exam that is passed, your salary would be increased by the employer. When you are an actuary in the field of retirement plans, insurance and investments, you need to be certified by the Society of Actuaries (SOA), and when you deal in the field of casualty, property and liability, you need to be certified by the Casualty Actuarial Society (CAS). In order to reach the peak you would need to train for at least six years, and when you reach this level, you would be among the leading decision makers in the organization. And, at this level, your average annual salary will fall between $120,000 and $150,000.

Future of Jobs of Actuaries

As per the present scenario, pursuing a career in actuarial science is highly rewarding, globally. Actuaries receive salaries that are the best among all the professions. In addition, there is a huge demand for an actuary. Similar to other markets, the price is high because of this high demand. However, with the gradual adjustment of supply, the balance will be established. And, with the advancement of new and advanced computer programs, the demand for actuaries may not remain so high forever. At this point it is worth considering the history of demand for doctors, nurses, accountants, computer scientists and consider what is available today and imagine what an actuary’s future career may appear to be.

Get an Actuarial Science Book

In case you have a keen interest in finding more about actuarial science, then you can find some reputed books at online stores. The listings should help you to find the book that would be ideal for you.

We suggest this book :

What do you think – what will be Highest Paying Job in future ?

Filed Under: Thinking, Worldwide job offers

Can money buy happiness?

May 20, 2011 By Leave a Comment

success_and_happinessCan you answer the question which thing is one of life’s great mysteries? People who do not have much money will possibly declare that, in any way happiness is not concern about money. But you do not have earnings to buy that elusive object termed as happiness. So you trust in simpler objects such as the laughter of a child, a sunset, a chocolate, a hug, etc that make you to take a smile to your face and in your mind.

Those people who have more money strongly accept that money has nothing to do with happiness and also says no matter which will make you trivial and selfish. In fact it is not politically approved that money can buy happiness. Therefore you move forward with the smooth alternatives of it which depend on how much of you have.

To answer all the questions you have to know the meaning of happiness. As the definition in the dictionary happiness is a condition of being happy. By finding the definition of happy you have clear about happiness. And also find out what things makes you being happy. Let’s try to know whether happy shows joy or delight or pleasure or contentment to you, which depends on where you look for the meaning of happy. Thus you get the overall image of it.

There are several answers for the question what makes a person happy. Many people discover pleasure in simple objects that have no cost or that not related to money. That is, a book or a song, affectionately prepared food, well going connection, may be the smell of earth after the first rain. All these objects made you happy with an inspiring type of feeling termed as happiness. Really it is an emotion of satisfaction and for many people that is enough.

Most of the people who basically believe that happiness found in this way. But some people who does not agree with it. They may question it. They try to meet the requirements and concepts of happiness. They want to find solid evidence of happiness proportion to their life. When they supposed that it is lost or insufficient they go for access it in anyway that ranges from deliberation to decay of precedent life. In this case money may or may not be required to acquire happiness. Some lucky people discover happiness surrounded by them. Others will find the exact spiritual guide or rehabilitation to explain it.

There are some other people who compare happiness with the wealth they have. They think that, if more wealth they have, they got more happiness. That is, an additional residence, new cars, rooms filled with jewellery and dresses, a business occupation, etc. This takes more money. Those people were some what sincere about their wealth. They expense more money in the shameless searching of happiness that makes a complete logic to these people. Then there is a question arise that why make money if it doesn’t make you happy?

This group of people exposed to the contempt of cynics who reject to agree that some insensitive thing like money can buy something disdainful as happiness. Cynics explain money can buy only an existence of life, can’t buy peace of mind and they also realize that those people drone money virtuously. Cynics also questions that what does money take apart from ulcers and family feuds? By these concepts those people suggest that happiness is somewhat that detached from the contentment and gets from their own things. To build their position they may quote doubtful philosophers.

Sour grapes? It is closely like that perspicuous pessimist has a frantic pledge and a high preservation wife and that he hasn’t been happy at so long. But he adopts it? No, because it contributing the messages to the information that only money can create or get happiness.

As a conclusion of this article, it does not suppose to judge that what thing make other people happy and what it expenses to build them happy. Each of them has their own matters with happiness.

What do you think ?

Filed Under: Thinking