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Jumat, 18 November 2011

Hacking : Pro and Contra ?

Do you know what a hacker is? Well, a hacker is a person who enjoys exploring the details of programmable systems on computers and they like to stretch the capability of the systems. And you know what, the activities they do in the computers are called ‘hacking’.

So, what’s the problem with ‘hacking and its hackers’? Well, the problem is whether ‘hacking and its hackers’ is legal or illegal? What I mean is that people in the world have many different views about hacking and the hackers. Some of them take sides, but many object.

To get back to what I was saying previously, let us see the positive points of a hacker, shall we? Although in most places breaking into computer systems is considered illegal, I believe that hackers don’t do anything illegal because they only want to know and try the systems. I dare to say that a hacker likes finding the strengths and the weaknesses of a computer system. They feel proud if they can find the weaknesses. So I don’t really see the crimes in this case. In addition, these hackers sometimes help the police catch the ‘white collar criminals’, such as bank robbers, money launderers, credit card forgers. For example, in 2000, the U.S. hackers caught some Singaporean hackers who made ‘Virus Love’ to break up the programs of the U.S. National Security system.

Nevertheless, those who object to the good points of a hacker say that hacking is a crime. The reason is that some hackers use their brilliant skills to break into banks and other vital institutions where they can get money, destroy information, and the worst thing is they can get secret information and sell it to another country. This is a treachery.
Take for example, in 1994, The U.S. government broke a conspiracy of computer hackers out of Majorca, Spain. These hackers were responsible for accessing and eliminating 190,000 telephone credit card numbers over computer bulletin boards in America and Europe. Seeing this fact, I don’t blame those who think negatively about hackers.
To put the whole thing in a nut shell, I personally think that hackers are not bad people with their brilliant skills. However, they could be bad because of money orientation to get the wealth. That’s just the point.
 

The Effects of Acid Soil

Soils with a pH of less than 7.0 are acid. The lower the pH, the more acid the soil. When soil pH falls below 5.5, plant growth is affected. Crop yields decrease, reducing productivity

Soils provide water and nutrients for plant growth and development. Essential plant nutrients include phosphorus, nitrogen, potassium and sulfur. Plants require other elements such as molybdenum, in smaller quantities. Some elements eg aluminium and manganese, are toxic to plants.

Nutrients become available to plants when they are dissolved in water. Plants are able to take up phosphate, nitrate, potassium and sulfate ions in solution.

The solubility of nitients changes with pH. In acid soils (low pH), molybdenum becomes less soluble and aluminium becomes more soluble. Therefore, plant growth may be affected by either a deficiency of molybdenum or too much aluminium.

Both crop and pasture plants are affected by acid soils. there may be a range of symptoms. Crops and pastures may be poorly established resulting in patchy and uneven growth. Plant leaves may go yellow and die at the tips. The root system of the plant may be stunted. Crops may yield less.

Plants vary in their sensitivity to low pH. Canola and lucerne are very sensitive to acid soils so do not grow well. Lupins and triticale are tolerant to soils of low pH so they still perform well.

Land can become unproductive if acid soil is left untreated. Incorporating lime into the soil raises the pH. Therefore, liming soil can reverse the effects of acid soil on plants and return a paddock to productivity.
 

Selasa, 25 Oktober 2011

The Legend of Toba Lake


In a village in Sumatra, there lived a farmer. He was a farmer who diligently worked, although not large farm he have. He worked hard enough to get their needs. Actually he was already enough to get married, but he still chose to live alone. On a sunny morning, the farmers are fishing in the river.

"Hopefully today I got a big fish," the farmer whispered to himself.

Some time after the hook was thrown, that's fishhook wiggle. He immediately set the hook. The farmers cheer that after he got a big fish.

He was amazed at the beautiful colors of fish scales. Fish scales is yellow gold reddish. Her eyes are rounded and prominent, emit incredible rays.

"Wait, don't eat me! I'll be your friend if you not eat me."

Farmers are surprised to hear the sound of the fish. Because surprised, that fish fell to the ground. Shortly later, the fish is turned into a beautiful sweet girl.

"I'm dreaming," thought the farmers.

" Don't be afraid, I am also a human like you. I owe you because you have been save me from the curse," said that's girl.

"My name is Puteri, I don't mind to be your wife," said the girl seems urgent.

That's farmers nodded. And they become husband and wife. But, there was a promise that must be agreed, that is they should not talk about the origin of a fish Princess. If that promise abandoned, then there will be a terrible accident.

After reaching the village , the villagers became excited, to see beautiful girl with farmers.

"She may be a woman came down from heaven," they said.

The farmers feel very happy and peaceful. As a good husband, he continues to work hard for continuance of his life with farming. Because hard work, the farmers are living without a shortfall in his life. Many people are jealous, and they spread the ugly suspicion that could topple the success of farmers.

"I know that farmers must keep the evil spirit!" Someone said to her friends.
It was up to the ear Farmer and Puteri. But they do not feel offended, even the more diligent work.

A year later, Farmer and his wife happiness increases, because the farmer's wife give birth a male baby. He gave the name of his son Putera. Their happiness does not make them forget themselves. Son grow into a healthy and strong child's. He was a sweet child but scampish. He had a habit of making wonder both parents, that is always feeling hungry. Food should be eaten 3 people can eat their own.

After all, the Son always make irritated his father. If in order to help working parents, he always refused. Farmer's wife always reminds farmers that are patient with their child behavior.

"Yes, I will be patient, even though,, he was our children!" Farmer said to his wife.

"Thanks God!,, You think like that. You is a good husband and a good father," praised Puteri to her husband.

Indeed, people say,, patience is no limit. This is experienced by the farmers. One day, Putera get a job deliver food and drink to the field where his father is working. But Putera does not fulfill its tasks. The farmer wait his son comes, while holding thirsty and hungry. He immediately returned to the house. The Farmer see Putera playing ball. Farmers became angry while pinch ear his son.

"Scallywag! Not know themselves! Son of fish!" curse of the farmers, without conscious have the word taboo is.

After the farmers say the words, then and there the child and his wife disappeared. disappear without trace and former. Impressions of the former legs, sudden gush of water which is very swift and the downpours. Farmers village and all the surrounding villages submerged. Overflow water is very high, so wide and formed a lake. Lake was eventually known as Lake Toba. While small island in the middle known as Samosir Island.


Folklore from Sumatra Utara