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PEMDAS

"PEMDAS" - parentheses, exponents, multiplication, division, addition, subtraction, is the "order of operation" in a single math expression.

Some Acronym for my Mobile Phone

A mobile network is also called a cellular network because the network is distributed over land areas called cells, each served by at least one fixed-location transceiver, known as a cell site or base station.

GPRS is short for General Packet Radio Service, it's a mobile data service on the 2G and 3G cellular communication system, GPRS usage is typically charged based on volume of data transferred, contrasting with circuit switched data, which is usually billed per minute of connection time. So that you see on your mobile phone bill, the former is measured by Megabytes, but the later by Minutes.

GPS and GPRS

GPS is a positioning service that can determine any location on earth, hence the name Global Positioning System. On the other hand, GPRS is a data service technology that enables 2G telecommunication networks to provide services other than voice calls.

2G, 3G, 4G

2G is short for ‘2nd Generation wireless telephone technology’. 2G lets you send text and picture messages and has som…

Private enmity and Public duty

Zhaozi said, "Is not he your enemy?" Sheng replied, "Private enmities should not interfere with public [duty]. In your likings not to overlook faults, and in your hatreds not to disallow what is good, is the course of righteousness. I dare not act contrary to it."

--Duke Ai, Fifth Year.

Nine maxims

Do not begin disorder; do not trust in riches; do not rely on favour; do not oppose a common agreement; do not carry yourself proudly in ceremonies; do not be proud of your power; do not transfer your anger; take no counsels that are contrary to virtue; do nothing against righteousness.

Does pearls reproduce by itself through time

At the request of several families he and Mrs Legge gave a home for some months to a young Dutch girl, a granddaughter of the first Dutch governor of the Straits Settlements. She had several pearls of which the Dutch residents were great collectors, got from oysters found in a river of the Malay Peninsula, when she left them she gave Mrs Legge a small box containing a large pearl the size of a pea, with a blue spot on it, and two others not so large. This box was then put away and locked up. Several weeks later he took it out and on opening it discovered more than a dozen pearls, most of them very small. Astonished at the phenomenon he called his chief servant, a Portuguese, who happened to enter the room and who expressed no surprise but declared it to be a common occurrence. On enquiry he found that many of the Dutch people had jars of pearls, large and small, which had accumulated in this way. Some years later he related the incident at dinner on board ship. The captain was a cauti…

About Human Nauture

性相近, 习相远 are the ipsissima verba of Confucius, and form the chief dogma in Confucian ethics. It was vigorously upheld by Mencius, and opposed by Hsün K'uang of the 3rd cent. B.C. who held that the nature of man is radically evil, and also by Yang Hsiung who taught that it is neither one nor the other but a mixture of the two.

---- Herbert Allen Giles, San Tzu Ching