Abstract: Disclosed are a cold water tank and a water treatment apparatus. The cold water tank includes a tank body, a water inlet pipe provided at the tank body to convey water into the tank body, a water outlet pipe provided at the tank body to convey the water out of the tank body, and including an air vent hole, and a floating member movably provided at the water outlet pipe to block the air vent hole when the water filling the tank body reaches a height of the air vent hole. The water in the upper portion of the tank body is prevented from passing through the air vent hole and draining through the water outlet pipe, thereby preventing the cooler water in the lower portion from mixing with the hotter water in the upper portion. Only the cooler water in the lower portion can be supplied to a user.

Abstract: According to the present invention, provided is a method and system for providing an advertisement and event which is customized for web-user, in particular, to a method and system capable of providing a customized advertisement and event by searching an advertisement and event information database based on the searching condition of the obtained web-user information. A method of providing an user-customized event according to the present invention comprises receiving an information of a user accessed to web site; searching an advertisement and event providing information in a database, based on the searching condition of the received user information; and providing an advertisement and an event to the user according to the search result.

Abstract: The present invention provides a system and method for sharing profits with beneficiaries designated by a recommender who evaluates goods of an on-line shopping mall or an on-line portal site etc. (hereinafter, an e-trading system), when a purchaser connects to the e-trading platform and buys goods of the e-trading platform through the evaluation contents.

Abstract: A system for searching products intelligently based on analysis of customer's purchasing behavior includes a search engine database, a product database configured to store a predetermined number of keyword information on each product, an input/output unit configured to receive keywords, product selection or order information, and output search results, a search unit configured to generate search results of the search engine database and the product database from the keywords, and a related keyword information update unit configured to update related keyword information of the product database depending on the product selection or the order information.

Abstract: A washing machine is disclosed. An object of the present invention is to provide a washing machine having high efficiency which can reduce energy waste by controlling an operation of a circulation pump and a method for controlling the same. According to the washing machine of the present invention, unlike the prior art, the operation of circulation pump is controlled, considering the operation state of the motor, the heater or the water supply valve. Thus, energy waste may be prevented by the efficient control of the circulation pump.

Abstract: Disclosed is an apparatus for automatically equalizing tension of main ropes of an elevator suspended to the main ropes so as to move up and down. A structure of the apparatus is simplified so that the apparatus is easily fabricated and installed with improving a tension equalizing function. The apparatus has a plurality of movable pulleys coupled with ends of the main ropes, which are coupled to a car or a count weight and aligned in a machine room or a hoistway, through rods and rope coupling members, a fixed pulley section supported by a beam and having a plurality of fixed pulley sheaves installed in a single block in a longitudinal direction of the single block, a compensating rope aligned between the movable pulleys and the fixed pulley section so as to allow the movable pulleys to move depending on tension of main ropes coupled with the movable pulleys, and a housing for properly positioning the above components.