摘要:
The present disclosure relates to a multi-dimensional histogram method using a minimal data-skew cover in a space-partitioning tree, which is used to estimate the selectivity of queries, that is, the sizes of query results, and a recording medium storing a program for executing the multi-dimensional histogram method. In the multi-dimensional histogram method, a Database (DB) system receives information required to generate a histogram from an outside of the DB system, and then constructs a space-partitioning tree based on the information required to generate a histogram. The DB system constructs a multi-dimensional histogram based on a minimal data-skew cover in the space-partitioning tree. When the DB system receives a query from the outside, the DB system calculates the estimate of the selectivity for the query by using the multi-dimensional histogram. Further, the present disclosure includes a recording medium storing a program for executing the multi-dimensional histogram method.
摘要:
Disclosed are an air purification system for a vehicle and an air purification method thereof. When an air purifier is turned on, an aroma is discharged, and, if an air conditioner is turned on, discharge of the aroma is stopped and a deodorant is discharged for a predetermined time period. If discharge of the deodorant is stopped, the aroma is discharged again, and if the air conditioner is turned off, discharge of the aroma is stopped and the deodorant is discharged for a preset time period. If discharge of the deodorant is stopped, the aroma is discharged again.
摘要:
A thin film type solar cell and a method for manufacturing the same is disclosed, which can overcome various problems caused by a related art laser-scribing procedure since the thin film type solar cell is divided into a plurality of sub-cells through the use of auxiliary electrode or partition wall, the thin film type solar cell comprising a substrate; a front electrode layer and a cell-dividing part on the substrate; and a rear electrode on the semiconductor layer.
摘要:
The present invention relates to a method for controlling a defrost heater of a refrigerator. The method for controlling a defrost heater of a refrigerator, comprising the steps of; accumulating the run time of a compressor and checking whether accumulated time has reached a predetermined time for defrosting; performing a defrost operation, if the predetermined time for defrosting is a first defrosting point of time; checking the current state of the defrost heater if the predetermined time for defrosting is not a first defrosting point of time; turning on the defrost heater to perform the on/off control of the defrost heater, if the defrost heater is turned on/off and thereafter the on/off time reaches a predetermined time; and turning off the defrost heater to finish the defrost operation, if the temperature of cooler has reached a defrost-off temperature during the on/off control of the defrost heater.
摘要:
An improved method and an apparatus for driving a pump motor for a refrigerator dispenser which are capable of feeding-back a water remaining in a discharge hose to a water container of the refrigerator by reversely rotating a pump motor after discharging the water from the water container, for thus preventing the water and the discharge hose from being polluted. The method includes the step of a first step for discharging a water from a water container through a discharge hose by driving a pump motor when a lever switch is turned on, a second step for stopping the operation of the pump motor when the lever switch is turned off and finishing the water discharge, and a third step for feeding back the water remaining in the discharge hose to a water container of the refrigerator after a predetermined time after the second step by reversely rotating the pump motor with respect to the rotation direction of the pump motor in the first step.
摘要:
Disclosed herein is a pumping apparatus for a vehicle seat, which includes an input member rotated by torque input from a handle lever, a clutch unit configured to transmit the input torque to a link mechanism of a seat cushion, a brake unit configured to cut off the torque input in reverse from the link mechanism, a housing accommodating the clutch unit therein, and a fixing member coupled to a rear end of the housing, wherein the input member includes a first input member disposed in front of the housing, and a second input member connected to the first input member and accommodated in the housing, and the clutch unit includes a torque transmission member arranged on an outer peripheral surface of the second input member, and an annular control member having a clutch friction surface formed on an inner peripheral surface thereof.
摘要:
A programming method of a nonvolatile memory device is provided including: applying a local voltage to a first unselected word line; applying a local voltage to a second unselected word line, after the local voltage is applied to the first unselected word line; and applying a pass voltage to the first unselected word line, after the local voltage is applied to the second unselected word line. Related devices and systems are also provided herein.
摘要:
Disclosed is an indoor location recognition system capable of providing location based services indoors. The indoor location recognition system includes a portable terminal including a short range location recognition system and a wireless communication system using an RFID technology and a two-dimensional bar code technology, a geomagnetic sensor, a camera, an RFID reader or tag, an indoor navigation device calculating a moving distance from revolutions of a wheel of a shopping cart to transmit the calculated moving distance to the portable terminal, shopping mall map information transmitted to the portable terminal, and shopping mall application programs providing location based services. The shopping mall to which the indoor location recognition system according to the exemplary embodiments of the present invention is applied can reduce initial installation costs and operation costs while providing high accuracy of location estimation.
摘要:
The invention comprises a novel virus that can kill mammalian cancer cells efficiently. The virus produces a novel protein that converts two non-toxic prodrugs into potent chemotherapeutic agents. These chemotherapeutic agents are produced locally and help the virus kill the cancer cells as well as sensitize them to radiation. In preclinical studies, the virus has proven effective at killing a variety of mammalian cancer cells either alone or when combined with prodrug therapy and/or radiation therapy. The invention may provide a safe and effective treatment for human cancer.