Abstract:
An ATM traffic control apparatus and method for adaptively controlling ATM traffics. The ATM traffic control apparatus includes an output buffer for storing traffics generated by a plurality of traffic sources; traffic predictors of neural networks for generating predicted traffic values designating the number of cells which is expected to arrive during a future time slot, by adaptively learning the number of cells received during a setting time slot; a decision gate for deciding whether call congestion will happen by using predicted traffic values, an available buffer size of the output buffer and the number of cells to be transmitted during a setting time slot, and for generating the number of cells which can not be processed during a future time slot when it is decided that the congestion will happen; and a traffic controller of an expert system for calculating an optimal flow rate of each traffic source to control the congestion of the output buffer, by using service rates of the traffic sources, traffic types, peak bit rates, predicted traffic values, and the number of cells which can not be processed in the output buffer.
Abstract:
A power train of an automatic transmission has eight forward gear stages and three reverse gear stages. The power train includes two composite planetary gear sets and seven engagement elements: two clutches and five brakes. Two of the engagement elements are engaged in each gear stage.
Abstract:
A six-speed power train of an automatic transmission for a vehicle includes: a first, double pinion planetary gear set including a first operational element always operating as an input element, a second operational element selectively operating as an output and a fixed element, and a third operational element selectively operating as an input element, an output element, and a fixed element; a second, Ravingneaux type planetary gear set including a first operational element selectively operating as an input element, a second operational element always operating as an output element, a third operational element selectively operating as an input element and a fixed element, and a fourth operational element selectively operating as a fixed element; a plurality of clutches disposed between and variably connecting operational elements of the first and second planetary gear sets; and a plurality of brakes variably connecting a transmission housing with one of the fixed elements.
Abstract:
Seven forward speeds and three reverse speeds are realized by combining two compound planetary gear sets using three clutches and four brakes, and each shift speed is realized by operating two frictional elements, thereby reducing a capacity of a hydraulic pump and enhancing an efficiency of a hydraulic pressure control by realizing each shift speed by operating two frictional elements. A first shift portion and a second shift portion are disposed on the same shaft axis. The first shift portion includes a first planetary gear set formed as a double pinion planetary gear set and a second planetary gear set formed as a single pinion planetary gear set, and the second shift portion includes a third planetary gear set formed as a single pinion planetary gear set and a fourth planetary gear set formed as a single pinion planetary gear set. The first shift portion is combined by two clutches and two brakes, and the second shift portion is combined by one clutch and two brakes.
Abstract:
A power train of an automatic transmission has eight forward gear stages and three reverse gear stages. The power train includes two composite planetary gear sets and seven engagement elements: two clutches and five brakes. Two of the engagement elements are engaged in each gear stage.
Abstract:
Disclosed is an antipyretic drug comprising a Stauntonia Hexaphylla leaf extract as an active ingredient. The antipyretic drug is developed based on the finding that the Stauntonia Hexaphylla leaf extract has no cytotoxicity and exhibits superior antipyretic effects, as compared to conventional antipyretic drugs having antipyretic effects. An antipyretic composition comprising the Stauntonia Hexaphylla leaf extract as an active ingredient exhibits potent antipyretic effect.
Abstract:
Disclosed is an antipyretic drug comprising a Stauntonia Hexaphylla leaf extract as an active ingredient. The antipyretic drug is developed based on the finding that the Stauntonia Hexaphylla leaf extract has no cytotoxicity and exhibits superior antipyretic effects, as compared to conventional antipyretic drugs having antipyretic effects. An antipyretic composition comprising the Stauntonia Hexaphylla leaf extract as an active ingredient exhibits potent antipyretic effect.
Abstract:
A six-speed power train of an automatic transmission for a vehicle includes: a first, double pinion planetary gear set including a first operational element always operating as an input element, a second operational element selectively operating as an output and a fixed element, and a third operational element selectively operating as an input element, an output element, and a fixed element; a second, Ravingneaux type planetary gear set including a first operational element selectively operating as an input element, a second operational element always operating as an output element, a third operational element selectively operating as an input element and a fixed element, and a fourth operational element selectively operating as a fixed element; a plurality of clutches disposed between and variably connecting operational elements of the first and second planetary gear sets; and a plurality of brakes variably connecting a transmission housing with one of the fixed elements.
Abstract:
Seven forward speeds and three reverse speeds are realized by combining two compound planetary gear sets using three clutches and four brakes, and each shift speed is realized by operating two frictional elements, thereby reducing a capacity of a hydraulic pump and enhancing an efficiency of a hydraulic pressure control by realizing each shift speed by operating two frictional elements. A first shift portion and a second shift portion are disposed on the same shaft axis. The first shift portion includes a first planetary gear set formed as a double pinion planetary gear set and a second planetary gear set formed as a single pinion planetary gear set, and the second shift portion includes a third planetary gear set formed as a single pinion planetary gear set and a fourth planetary gear set formed as a single pinion planetary gear set. The first shift portion is combined by one clutch and two brakes, and the second shift portion is combined by one clutch and two brakes.
Abstract:
Seven forward speeds and three reverse speeds are realized by combining two compound planetary gear sets using three clutches and four brakes, and each shift speed is realized by operating two frictional elements, thereby reducing a capacity of a hydraulic pump and enhancing an efficiency of a hydraulic pressure control by realizing each shift speed by operating two frictional elements. A first shift portion and a second shift portion are disposed on the same shaft axis. The first shift portion includes a first planetary gear set formed as a double pinion planetary gear set and a second planetary gear set formed as a single pinion planetary gear set, and the second shift portion includes a third planetary gear set formed as a single pinion planetary gear set and a fourth planetary gear set formed as a single pinion planetary gear set. The first shift portion is combined by one clutch and two brakes, and the second shift portion is combined by one clutch and two brakes.