Archive for February, 2010

DIVs vs. Tables

Friday, February 26th, 2010

DIVs vs. Tables: What will you choose for your webpage?
Tables have always prompted eye-gouging hissy fits amongst different web designers and accessibility advocates of every stripe. Both the side saddle with myth and have debated in larger part from the conventional ideology.

Why Table layouts were preferred?
Most of us know that prior to the arrival of style sheets, layout tables worked fine with everyone. Experts felt that Data tables were hard and most users preferred layout tables, as they were simple. Most people preferred tables for two reasons over DIVs. Firstly, they were around for a longer period with the web designers. Secondly, they offer a faster method for creating page layouts that are grid-based.

Simple layouts have been amongst the few reasons that have made some users have gripes against DIVs. Again, DIVs have sketchy supports for numerous browsers too. Experts used to feel that it will always be a difficult task of replacing tabular layouts with DIVs. Tabular layouts have mostly similar layouts in numerous ancient browsers (graphical).

Advantages of DIVs
However recently, some of the web designers have felt that DIVs have numerous advantages over tabular layouts. They have found out that DIVs are:

- Having page size much smaller than tables and are quicker in loading on most browsers
- The flexibility of future with further development is there with DIVs
- The source file is much easier for reading
- DIVs are friendlier in terms of different search engines

Reason for which you should shift from layout tables
Layout tables were formulated for providing structures to a data, meaning all the data had a particular variable and they were systematically stored. This was the intended use of the tables. Wide deployed subsets are included in HTML 3.2. Its standard says that tables could be utilized for tabular markup or for layouts.
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Home Schooling or Not?

Thursday, February 25th, 2010

Much of what I thought about home schooling was wrong. The conventional wisdom about this rapidly growing dimension of American education is too simple, too stereotyped and too stale.

For instance, the Home School Legal Defense Association, despite its energetic lawyers and many admirers, is not the leader of home schooling in this country. There is no leader, and no reigning ideology. There are instead at least a million American children – the real figure is probably twice that number – whose families want them to learn at home for many reasons, often having little to do with religion or politics.

The common image of home-schoolers as lockstep religious conservatives falls apart when you discover that some of these parents have been shunned by their fundamentalist churches for teaching their kids at home rather than sending them to the church’s school. Some home-schoolers love the new for-profit online teaching programs like K12. Some think they are a corporate plot. Some parents are home-schooling because their kids were learning more quickly than their teachers could keep up with. Some are home-schooling because their kids were learning more slowly than their public school teachers had patience for. Some home-school because their children were unhappy at school. Some home-school because they could not meet their needs any other way.

Public school educators often worry that the children of such people will not learn necessary social skills. But home-schooling parents said their children learned how to deal with other people just fine, particularly with the many adults they encountered when they visited the library or went to church or did chores around the neighborhood. With their parents so often at their side, they were able to see what good manners and self-confidence looked like, rather than be forced to adopt the jungle code of the average high school corridor. In many families one parent stays at home to supervise the home schooling, although they often do some work there to pay the bills, or trade off with other home-schooling parents when they have to be away.
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Everything You wanted To Know About Solar Panels

Tuesday, February 23rd, 2010

The history of solar panels can be dated back to 1839 as this was the period when French physicist Antoine-Cesar Becquerel made the astonishing discovery of the photovoltaic effect. This surprising discovery took place during an experiment that involved an electrolytic cell made from two metal electrodes and was placed within an electrolyte solution. Antoine-Cesar Becquerel discovered during the experiment that when the electrolytic cells were exposed to light, it produced a certain amount of electricity. The more the light, the more the production of electricity and that is how solar panels actually came into the picture.

Almost 50 years later in 1883, the first solar cell was developed by Charles Fritts and it was formed using selenium coating sheets with a micro-thin layer of gold. Between the period of 1883 and 1941 there were several scientists as well as inventors who with the help of companies started experimenting with solar energy. It was during this period that Clarence Kemp, an inventor from Baltimore patented the first ever commercial water heater that was being powered by solar energy. Apart from this, the great scientist Albert Einstein also published a thesis on photoelectric effect and within a short period of time received the coveted Nobel Prize for his thesis and valuable research.

Around 1941, an American inventor named Russell Ohl who was working for Bell Laboratories patented the first ever silicon solar cell. This new invention was spearheaded by the Bell Laboratories and they went on to produce the first ever crystalline silicon solar panel in the year 1954. This was the most effective solar cells in that era as it achieved a 4 percent return on overall energy conversion. In the next few years several scientists from all over the world continued their research, study and experimentation to improve upon the original solar cells and started producing solar cells that gave 6% efficiency on overall energy conversion.

The first ever large scale deployment and use of solar energy ever recorded was in space satellites. USA was the first country to enable production of solar cells that gave 20% efficiency and this was in the year 1980. By 2000, USA had produced several solar cells that were producing 24% efficiency. Last year, two large companies, Emcore Photovoltaics and Spectrolab rose to dominate the world of solar cell production by producing cells that gave 28% efficiency.
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College Life: Secrets to Getting By

Friday, February 19th, 2010

When you first begin college, life can be difficult at times so it is vital to have some “university student survival tips” to ensure that you enjoy college life or at the very least, survive it. Obviously, money is going to play an important role in your survival and you need to make sure that you save enough to pay for the essentials before spending it all on enjoying college life.

Most students live in shared accommodation for part of their college life. This can be the first time that many students have had to share their living space with non-family members and how you deal with this can really be the difference between an enjoyable or a hellish college life. The most important point to remember is that you need to develop some boundaries with your roomies. Everyone needs to have their own space and this is a guaranteed way to ensure that you survive college life. If you ensure that you have some time to yourself to catch up on your studies it will mean that you are free to enjoy the more pleasurable sides to college life without resenting the people that you live with. Of course everyone has their own standards but as long as you make sure that you clear up after yourself then it will make college life easier although you cannot change those around you.
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