Salt is used to store your data securely. If we have to store user password securely, we need to use salt.$pwd=hash(hash($password) + salt)then store $pwd in your system instead of the real password.So, the question is, how to define the salt value. Here is how:// if (saltBytes == null) {    // Define min and max salt sizes.    int minSaltSize = 4;    int maxSaltSize = 8;    // Generate a random number for the size of the salt.    Random random = new Random();    int saltSize = random.Next(minSaltSize, maxSaltSize);    // Allocate a byte array, ... Read More

A block chain is a shared, distributed ledger which consists of a structure of data where all the financial ledger entries are digitally signed to ensure their authenticity. This enables higher security for the transactions and no one can tamper it. The block chain technology is showing higher promise for the businesses due to its data integration strategy.Block chain technology supports Bitcoin and other cryptocurrencies too.

Cruise ships are sometimes carrying 10, 000 and more people on board which amounts to the population of a small town. When they are set for a sail it will be usually 10 days to one month for a commercial ship to touch the land. Meanwhile, they have to take care of food, washing of clothes and disposing of human excreta for that period.Not just human waste, there can be leftover food, bottles, cans, cardboard and everything which has to be handled on the land, has to be handled on the ship too.Where does the waste go from the ships? ... Read More

The number of cars on India's roads has been doubling every 8-10 years—and it's costing the country. A WHO study from 2014 found that 13 of the world's 20 most polluted cities are in India. The country experiences 120, 000 deaths per year due to traffic fatalities, more than any other country.To improve the traffic conditions in India, there are certain things that have to be followed by the Government, private sector and also citizens.City governments in India have to focus on investing in road expansions and overpass construction projects.The public transport services have to be improved, curbing the car ... Read More

Nowadays youth are gaining the importance of "Earn while you Learn" concept. There are many benefits due to this approach.First and foremost is earn your pocket money while you are studying. This will help in a long way in understanding the value of money and money management in your future.Along with financial benefits, if you do an apprenticeship in the field of your study, you will gain practical knowledge on the subject.You will get exposed to the workplace discipline and get some learning experience about your future job.You will not waste time and understand the importance of time management.You will ... Read More

Employee turnover rate is a key indicator of a company's performance. It refers to the percentage of employees who leave the organization during a particular period of time, say one month.Employees may leave due to resignations, terminations or retirements. The total employees at the starting of the month (A), the employees at the end of the month (B), and the number of employees left during the month (X) are taken into account to get the average employee turnover rate.Avg = (A+B)/2 -- adding both A and B divided by 2 gives you average employees of that month.Divide the number of ... Read More

LEDs (Light emitting diodes) are very widely used in today's electronics equipment and they are ruling the world's display technologies today. LED's are used for much electronic equipment. Mostly they are used as panel indicators on televisions, radios and other domestic electronic and industrial equipment. There are different types of LEDs.Traditional inorganic LEDs − These are used for small LED lamps, panel indicators etc.,High brightness LEDs − These are used for domestic lighting.Organic LEDs − Organic LEDs uses organic materials and are replacing the traditional types of LEDs with increased efficiency.

After you’ve learned the basics of computer science, you’ll be ready to learn a programming language. Java is a high-level object-oriented programming language which is platform independent and can be run on any mobile, web or desktop applications.Theoretically, it is true that with hard work, effort and right direction one can become an expert in Java programming. But practically it would help if you know one or two core programming languages to understand the jargon easily. Learning the basics of computer science will not be enough. If you have prior knowledge of C language and the concepts, learning Java becomes easier.Java ... Read More

A graduate of Electronics and communications engineering have a lot of opportunities as the subject is very vast. People can take one of the fields related to EC and become an expert in that and then explore the opportunities in that area. Apart from their core field, electronics engineers have a lot of openings in IT sector also.An EC engineer can explore opportunities from top recruiters like Siemens, Motorola, Intel, Tech Mahindra, BHEL, Flextronics and Government sector like Indian Airforce, Navy and also Railways.

There are some free options available to generate closed captions from Audio/Video.Amara − Amara is one such tool. It is very easy to learn and provides the best platform to create captions from scratch.Youtube − Youtube is the most popular tool which is available for free. It has great features to create captions.Subtitle Edit − This is a free tool which has to be downloaded on your laptop and desktop and you can start using it even offline.