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8 results on '"Feng, Yu-Bo"'

3. Solution algorithms for single-machine resource allocation scheduling with deteriorating jobs and group technology.

Author

Liang, Xi-Xi, Liu, Mengqi, Feng, Yu-Bo, Wang, Ji-Bo, and Wen, Li-Shu

Subjects
RESOURCE allocation, GROUP technology, POLYNOMIAL time algorithms, COST allocation, ALGORITHMS, CELL phone systems
Abstract

This article deals with a single-machine resource allocation scheduling problem with deteriorating jobs. Under a group technology environment, the actual processing times of jobs are a convex resource allocation function of their starting time and the amount of resource allocation. The objective is to minimize the weighted sum of makespan and resource allocation cost. For two special cases, it is proved that the problem can be solved in polynomial time. For the general case of the problem, heuristic and branch-and-bound procedures are developed to solve the problem. Computational experiments are also performed to examine the effectiveness and the efficiency of the algorithms. [ABSTRACT FROM AUTHOR]

Published
2020
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4. Due-window assignment scheduling problems with position-dependent weights on a single machine.

Author

Wang, Ji-Bo, Zhang, Bo, Li, Lin, Bai, Danyu, and Feng, Yu-Bo

Subjects
TARDINESS, ASSIGNMENT problems (Programming), POLYNOMIAL time algorithms, PRODUCTION scheduling
Abstract

This article deals with an integrated optimization problem of production scheduling and common due-window assignment on a single machine. The objective is to minimize the total cost, which is a weighted sum function of earliness and tardiness, due-window starting time, and due-window size, where the weights only depend on their position in a sequence (i.e. position-dependent weights). A polynomial time solution algorithm is provided for the corresponding problem. The problem can also be extended to slack due-windows assignment and general position-dependent processing times. It is proved that both these extensions remain polynomially solvable. [ABSTRACT FROM AUTHOR]

Published
2020
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8. The design of the Langmuir probe onboard a seismo-electromagnetic satellite

Author

Guan, Yi-bing, Wang, Sh-ijin, Liu, Chao, and Feng, Yu-bo

Abstract

The double Langmuir probe, as a payload of a seism-electromagnetic satellite, has been designed for in situ measurements of the parameters of the ionosphere plasma on the 500km altitude orbit to research the electromagnetic coupling between the solid-earth activities and the ionosphere disturbances. The Langmuir probe is comprised of two spherical sensors: the diameter of the smaller one is 1cm and the other one is 5cm. The two sensors are mounted on two parallel booms on the satellite, which are half meter far from each other. The two main ionosphere parameters measured by the Langmuir probe are electron density and electron temperature, which are computed from the I-V curves. The I-V curve is given by a current flow through a sensor in case of a sweep voltage is applied to the sensor. There are three main work models for the Langmuir probe: the normal model, the burst model and the decontamination model. The normal model is for the general measurement of the ionosphere parameters around the globe with 1s time resolution, while the burst model is to measure the ionosphere over the interested areas, like the areas with more earthquake activities, with 0.5s time resolution. The decontamination model would work if the I-V curves shown hysteresis phenomenon, which indicated that the sensors may be contaminated by the outgassing of the satellite. The description of the Langmuir probe instrument and its capabilities is provided.

Published
2011
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