The just-in-time production philosophy has led to a growing interest in scheduling problems considering both Earliness and Tardiness (E/T) penalties. An EIT schedule model, with the consideration of different penalties for tardiness, earliness and flowtime of jobs, is introduced to minimize total production costs. Based on classical genetic algorithm, a new Enhanced Genetic Algorithm (EGA) is designed to solve tardy and early problems. In order to avoid infeasible decoding solutions and reduce simultaneously tardiness costs, the chromosome-repair operator based on critical paths is put forward to solve the problem that some jobs violate the due date constraints. The objective-value revision operator based on chromosome rescheduling is introduced to reduce in-process and final goods inventory costs by delaying job release date. The proposed approaches have been tested on a wide range of 80 scheduling problems and satisfactory results have been obtained.
The pressure‐sensitive paint (PSP) technique as an optical method enables measurement of surface pressure distribution over a model and its measurement system plays an important role in this technique. In the present study, the fluorescent PSP is used and PSP measurement system is established by the authors. The influence of the measurement system characteristics on calibration curves is then explored through many PSP calibration experiments. With five camera apertures and two ultraviolet (UV) lamp powers, the original PSP calibration images and curves are presented in this paper. The experimental results demonstrated that: (1) the characteristics of the PSP measurement system have an important effect on the pressure measurement; (2) the 400‐W UV lamp can provide adequate excitation photons to excite fluorescence molecules entering the energy transition and a larger charge‐coupled device (CCD) aperture can be used to improve the signal‐to‐noise rate (SNR) of the CCD.
Surgical resection of lesions and closed-loop suppression are the two main treatment options for patients with refractory epilepsy whose symptoms cannot be managed with medicines. Unfortunately, failures in foci localization and seizure prediction are constraining these treatments. Electrical impedance
The Middle Route of South-to-North Water Transfer Project is a major strategy in our country which solves the deficiency of water resources in northern areas in 21st century through optimizing disposition of water resources, and which is also a major strategy of building wellto-do society and a systemic project related to development of the human offspring and present. The project can not only realize the optimized disposition of water resources in the areas but also accelerate greatly its sustainable development of society, economy and ecology. At the same time, there are a series of advantageous and disadvantageous affects for areas drawing out water resources with the decrease of water quantity. This paper introduces the present situation and major problems about the development of water resources in Xiangyang, and analyses the influence of the project on water resources in Xiangyang. Finally, we put forward the strategy of the sustainable utilization of Xiangyang water resources in the future.
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