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991.
992.
针对船舶轴承故障频发的现状,从设备整体的角度出发,综合考虑被监测对象内部各零部件之间的相互作用关系,研究多种信息的有效获取方法及其与设备故障间的内在关系,研制了一种轴承监测系统,能够有效监测轴承状态,诊断故障,使得船员能够及时了解轴承状态,对将要发生故障的轴承进行预防性维修。 相似文献
993.
This study examined the network sensor location problem by using heterogeneous sensor information to estimate link-based network origin–destination (O–D) demands. The proposed generalized sensor location model enables different sensors’ traffic monitoring capabilities to be used efficiently and the optimal number and deployment locations of both passive- and active-type sensors to be determined simultaneously without path enumeration. The proposed sensor location model was applied to solve the network O–D demand estimation problem. One unique aspect of the proposed model and solution algorithms is that they provide satisfactory network O–D demand estimates without requiring unreasonable assumptions of known prior information on O–D demands, turning proportions, or route choice probabilities. Therefore, the proposed model and solution algorithms can be practically used in numerous offline transportation planning and online traffic operation applications. 相似文献
994.
丛晓芳 《辽宁省交通高等专科学校学报》2014,(5):52-54
教学质量信息反馈系统作为教学质量监控体系的必不可少组成部分之一,它有助于不断地完善、修正教学过程的各个环节,它是教学质量提高的前提,本文从信息反馈系统构建的必要性及其遵循的原则入手,试图构建高职院校内部教学质量监控信息反馈系统。 相似文献
995.
996.
Tianliang LIU Chong ZHANG Tiange WANG Guojun WU 《Journal of Transportation Systems Engineering and Information Technology》2013,13(6):86-93
Many existing studies focus on the effects of traffic information from ATIS on travel choices. Research on the effect of friends' travel information on people's travel choice is uncommon, yet needed. In this paper, behavioral experiments are conducted to discuss what the effects of information interaction with friends can bring on individual travel decision behavior. The experimental results concluded that when the rate of friends' information interaction reaches 33.3%, the whole system is at an optimal level. Furthermore, users reach an optimum when the rate of friends' travel information interaction is 75%. The average time and cost per person is increasing when the whole system optimum transfers to the user optimum. Moreover, adjustments of departure time at the system optimum are more dispersed than at the user optimum, while travel choice changes are more concentrated. 相似文献
997.
Wendy A. Kellogg Michael J. S. Tevesz Claudette Robey Kevin O'Brien Michael McGoun Kirstin Toth 《Coastal management》2013,41(3):335-351
This article describes results from a study focused on informational and knowledge needs of local coastal resources decision makers in the Ohio Lake Erie basin. New information was obtained through a series of focus groups of local decision makers and key training providers in the basin. The results suggest that training providers and local coastal resources decision makers have differing perceptions of knowledge and information needs and training venues. The results suggest a role for state and federal agency training providers as coordinators and facilitators of an enhanced learning network among decision makers, including support of an information clearinghouse, adoption of appropriate e-based learning modalities, and regionally based learning and practice networks to improve the function of the training market to meet local decision maker needs. 相似文献
998.
J. H. Blase 《运输规划与技术》2013,36(2):109-115
This paper presents evidence that there is a hysteresis effect in the demand for transport usage with respect to price. Consequently the neoclassical concept of a smooth continuous demand curve is questioned. The author presents a hysteresis model whereby changes in demand and of demand are embraced in a single theory related to generalized cost. 相似文献
999.
1000.
赵鹏飞 《湖北汽车工业学院学报》2012,26(1):60-63
地方高校服务区域经济发展,不仅是经济社会发展的客观要求,也是学校生存和发展的必由之路。关于地方高校与区域经济互动发展的课题,学术理论界近年来进行了比较深入的研究,取得了一批重要成果。本文对近年来的研究文献进行了梳理和系统分析,对未来的深入研究进行了展望。 相似文献