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Monday, December 31, 2012

What Makes A Hurricane?

Hurricanes need warm tropical oceans, moisture and light winds above them. If the right conditions last long enough, a hurricane can produce violent winds, incredible waves, torrential rains and floods. In other regions of the world, these types of storms have different names.

Hurricanes rotate in a counter clockwise direction around an "eye." A tropical storm becomes a hurricane when winds reach 74 mph. There are on average six Atlantic hurricanes each year; over a three-year period, approximately five hurricanes strike the United States coastline from Texas to Maine. The Atlantic hurricane season begins June 1 and ends November 30. The East Pacific hurricane season runs from May 15 through November 30, with peak activity occurring during July through September. In a normal season, the East Pacific would expect 15 or 16 tropical storms. Nine of these would become hurricanes, of which four or five would be major hurricanes.

When hurricanes move onto land, the heavy rain, strong winds and heavy waves can damage buildings, trees and cars. The heavy waves are called a storm surge. Storm surge is very dangerous and a major reason why you MUST stay away from the ocean during a hurricane.

What Makes A Hurricane?

The generic name for a hurricane is tropical cyclone. These storms are called typhoons when they occur in the western Pacific Ocean, and cyclones in the Indian and southern Pacific Oceans.

What a hurricane looks like:

Eye

The centre of a hurricane is known as the eye of the storm. When seen from above, this eye is in the middle of the hurricane and looks cloud free. It is clear because the air has a downward, or sinking, motion, and since clouds require rising air to form, the eye of the hurricane has no clouds. This calm, however, is deceptive. The eye still has some wind and rain but it is calm compared with the rest of the violent storm.

Eye Wall

Have you ever noticed that an ice skater spins faster when she pulls in her arms? The same thing happens to clouds as they are pulled by the low pressure of the eye into the centre of the hurricane. When looking at a hurricane from above, you will see this area called the eye wall -- looking like a bright cloud ring right around the eye. It is the broad band immediately surrounding the eye and is where the storm is the worst.

Feeder Bands

Feeder bands are what give energy to -- or feed -- a hurricane. They are the long zones of clouds, showers, and thundershower activity that get their moisture over warm water. This is why there are hurricanes over the ocean and on the coastline. You will never find a hurricane in the desert. There can be one or more feeder bands energizing a hurricane.

What makes a hurricane?

o Ocean water temperatures of at least 80º Fahrenheit. This provides the storm with heat energy it needs to grow. That's why hurricanes in the Northern Hemisphere form in June through November, when ocean temperatures are warmest. September 10 is the peak of the Atlantic Ocean's hurricane season.

o Low wind shear from the top to the bottom of the atmosphere. For example, if the winds at the oceans' surface are light, and winds at high altitude over the tropical wave are strong, this "shear" will act to tear the developing hurricane apart.

o Something to get the tropical wave spinning. This is usually provided by a low-pressure system or front that moves from land over the tropical ocean. The part of the Earth's spin that points straight up at the point of interest, or the Coriolis force, must help get the storm spinning. Near the equator, the Coriolis force is zero, so no hurricanes form within about 500 miles of the equator.

More about Hurricanes

What Makes A Hurricane?
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Monday, December 17, 2012

News Aggregators: Problems and Solutions

News aggregation technology has resolved the problem in news monitoring. When news aggregators came in, the usual checking of news updates from one website to another has been made easier and faster.

A news aggregator is a tool or system that collects news contents from different new sources. Today, there are several news aggregation sites that people can use to get the latest news. While this is web-based, aggregators can also be used in web browsers, email applications, or it can be a desktop application.

Software-based aggregators are installed in web browsers and email applications to deliver news updates right at these applications, which can be viewed in a panel composition. In this manner, a user must subscribe to an RSS feed, which is integrated in websites, and then updates of these sites are sent to his email browser, email application, or the aggregator desktop application itself.

News Aggregators: Problems and Solutions

Although this sounds like a good technology, it's still plagued with various problems. Here are some:

Some news aggregation sites have unorganized news contents. To solve this, these sites may use a system that automatically classifies news contents into their appropriate news categories (national, global, crime, political, environmental, etc.). This will help users find their preferred stories right away.

News sources are misleading. This can be attributed to broken links or simply, links that do not direct the users to the right story. Aggregation websites collect their contents manually therefore sufficient attention must be given to the collection of data to avoid errors.

In the case of web feed subscriptions there are times when a person can receive a great volume of news contents especially if he had subscribed to many sites. Although, he can always un-subscribe to his feeds-what if all of them are relevant feeds-he can instead use the tagging system. He can tag his feeds with keywords so that he can sort and organize them. This way, he can easily find which article he wants to open and read. This process is called feed filtering.

Saturday, December 8, 2012

The Effect of Deforestation

Deforestation is the process of converting forested lands into non-forest sites that are ideal for crop raising, urbanization and industrialization. Because deforestation is a serious concept, there are also serious effects to the surroundings.

Effects of deforestation can be classified and grouped into effects to biodiversity, environment and social settings. Because deforestation basically involves killing trees in forests, there are so many effects that can be enumerated as results of the activity.

When forests are killed, nature basically requires people to renew the forest. Reforestation is one concept that is in the opposite direction as deforestation, but is proven to be a much harder effort than deforestation.

The Effect of Deforestation

So the rate of deforestation has not been offset by the rate of reforestation. Thus, the world is now in a troubled state when it comes to issues concerning the environment.

Pollution is rapidly growing along with population. Forests are greatly helping reduce the amount of pollutants in the air. So, the depletion of these groups of trees is greatly increasing the risk that carbon monoxide would reach the atmosphere and result in the depletion of the ozone layer, which in turn results to global warming.

Environment change

One major effect of deforestation is climate change. Changes to the surroundings done by deforestation work in many ways. One, there is abrupt change in temperatures in the nearby areas. Forests naturally cool down because they help retain moisture in the air.

Second is the long process of global climate change. As mentioned above, deforestation has been found to contribute to global warming or that process when climates around the world become warmer as more harmful rays of the sun comes in through the atmosphere.

The ozone layer is a mass of oxygen or O3 atoms that serves as shield in the atmosphere against the harmful ultraviolet rays from the sun. Because ozone is made up of oxygen atoms, oxygen react with carbon monoxide. Such reaction would use up oxygen atoms.

It follows that when there are more carbon monoxide atoms going to the atmosphere, the volume of oxygen would decline. Such is the case of ozone depletion.

The third effect to the environment would be on the water table underneath the ground. Water table is the common source of natural drinking water by people living around forests.

Water table is replenishing. That means, the supply of water underground could also dry up if not replenished regularly. When there is rain, forests hold much of the rainfall to the soil through their roots.

Thus, water sinks in deeper to the ground, and eventually replenishing the supply of water in the water table. Now, imagine what happens when there is not enough forests anymore. Water from rain would simply flow through the soil surface and not be retained by the soil.

Or other than that, the water from rain would not stay in the soil longer, for the process of evaporation would immediately set in. Thus, the water table is not replenished, leading to drying up of wells.

Effect to biodiversity

Forests are natural habitats to many types of animals and organisms. That is why, when there is deforestation, many animals are left without shelters. Those that manage to go through the flat lands and residential sites are then killed by people.

Through the years, it is estimated that there are millions of plant and extinct animal species that have been wiped out because they have been deprived of home. Thus, biodiversity is significantly lowered because of the savage deforestation practices of some people.

Wildlife advocates have been constantly reminding that several wild animals left in the world could still be saved if deforested forests would only be reforested and the practice of slash and burn of forests would be totally abandoned.

Social effects of deforestation

Deforestation is hardly hitting the living conditions of indigenous people who consider forests as their primary habitats. Imagine how they are rendered homeless when forests are depleted. These natives would be forced to live elsewhere, and are usually left to becoming mendicants in rural and urban areas.

Overall, effects of deforestation cannot be offset by the contribution of the practice to development. While it is logical that progress is very much needed by mankind, it must also be noted that nature knows no defeat. Destruct it and it would certainly retaliate, one way or another.

The Effect of Deforestation
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Tuesday, December 4, 2012

Christa Pike's Story - What Does the Case of Christa Gail Pike Say About the State of Society?

When Christa Gail Pike was twenty years old, she was convicted and sentenced to death for a crime she committed when she was eighteen. That is Christa Pike's story. It sounds horrible, doesn't it? A girl so young, her life already over - as, even if she was not put to death, she would surely live out the rest of her life behind bars - at such a young, tender age.

However, there is more to Christa Pike's story than meets the eye.

First of all, the crime she committed was incredibly heinous, and for the pettiest of reasons. She was convinced that the victim, Colleen Slemmer, was trying to steal her boyfriend. But rather than make snide comments about her behind her back as most girls her age would do in that situation, Pike tortured and killed her. She kept a piece of her skull as a trophy and showed it off around her school. That was the level of depravity and indifference to human life that she exibited.

Christa Pike's Story - What Does the Case of Christa Gail Pike Say About the State of Society?

When she was convicted and sentenced to death, many were outraged and heartbroken. Was it because of her gender? If a boy had done such a similarly heinous thing, wouldn't the public be glad to know that he was safely locked away? It seems society has a soft spot for women.

But, in this case, that soft spot was misplaced. Far from being rehabilitated by prison, Pike attempted to murder a fellow prisoner by strangulation only five years after her incarceration.

Why is it so unthinkable to society that we should punish a woman's bad acts as severely as a man's? If you do the crime, you should do the time. Your gender shouldn't matter.

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Sunday, December 2, 2012

The Importance of Style and Fashion in Today's Society

The importance of style and fashion in today's society is much underrated. The way that you look and dress is the first impression that people have of you. In order to give people a good first impression, you need to be dressed in a way that fits your style and does not look sloppy or messy, but one that does compliment you.

Personal style is a great way to express who you are and what you stand for. You can have fun with your own fashion statement but you should try and shy away from being too bold or it will make your outfit look like a costume.

You need to have a good appearance to show people that you invest in yourself. Your clothes should not be too tight because this gives a bad impression and it is very uncomfortable for you. Your clothes should not be too loose or baggy because that makes you look slovenly.

The Importance of Style and Fashion in Today's Society

Your hair and makeup are also essential parts of your appearance. Your hair should be nicely combed and your make up should be subtle and not too loud. You need to put time and effort into how you dress and style yourself.

Fashion and style let people know if you are serious or not. The way that you dress on a job interview tells employers if you might make a good employee. If you are wearing a short skirt and a t-shirt then most employers would not think to hire you because they think that you are not serious about wanting the job that they are hiring for.

The importance of style and fashion in today's society is very important so always make sure you look your best whenever you go because you never know who is watching. You could end up reaping many rewards if you invest in yourself because you will look great and feel better about yourself. Put your best clothes on and put your best foot forward.

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