Agile Information System Supporting Virtual Enterprise Operation

IntroductionIn the rapidly changing competitive globalenvironment,a dynamic collaboration amongcompanies is required to enable people andprocesses of the partners to be combined in atimely and cost- effective manner to combine acomplementary set of competencies to gain newmarket opportunities.This relationship maximizesthe combined competencies to achieve eachcompany's strategic goals and provide solutions tomeet their customers'needs[1] .In this paper,wefocus on the analysis and design of the…     

3R-3P双臂机器人用于纤维缠绕运动分析研究

在丝嘴处于缠绕轴平面运动的基本运动方程的基础上，推出一种能方便地用于异形缠绕的3R-3P双臂机器人缠绕机，并对运动学特点加以分析研究。     

有关动力触探影响因素修正问题的探讨

本文主要针对不同行业的规范中对动力触探试验影响因素修正方法的不统一进行初步探讨     

Slack-nibbling battery-aware task scheduling

Dynamic voltage scaling (DVS) is an efficient approach to maximize the battery life of portable devices. A novel overall planning strategy (OPS II) balancing slack supply and demand for DVS is proposed. An OPS II-based slack-nibbling overall planning strategy (SNOPS) algorithm is also proposed, which iteratively nibbles slacks for appropriate tasks selected by an overall planning dynamic priority function to perform DVS until the slack is exhausted and an optimum voltage setting is obtained. For a high-load task set, SNOPS manages to recover battery overload while maintaining schedulability. For random variable-load task sets, SNOPS achieves a saving of 29.51% battery capacity on average, the suboptimal gap is 27.84% narrower than that of our previously proposed OPS-based algorithm, and 92.10% narrower than that of the algorithm proposed by Chowdhury et al. Results indicate that OPS II manages to save battery to various extents while maintaining schedulability, and demonstrates good load compatibility and close-to-optimal performance on average. Biography: GAO Xun(1981–), male, Ph.D. candidate, research direction: embedded system, power optimization.     

直向过道岔时构架动应力的初步研究

采用简化的计算模型,对209HS转向架构架直向通过道岔时的动应力进行初步分析,计算结果与线路实测结果均吻合良好,为进一步采用细化的构架和道岔模型实现构架过道岔时动应力的定量分析展示出良好的前景     

简支梁式板的压电动力控制与数值仿真

采用Ｄａｕｂｅｃｈｉｅｓ小波理论的尺度函数变换，对两端简支的梁式板给出了由压电片感应器（ｓｅｎｓｏｒｓ）上的观测电量识别其结构变形的显式公式，在采用挠度和速度信号的负反馈控制律后，导出了控制电压的显式表达公式。这一压电动力控制模式的数值仿真结果表明：本文控制方法在抑制外界干扰方面具有良好的效果。     

优良的网页设计应该注意的几个要素

《网页设计》是现代教育技术专业的一门必修课。笔者根据自己从事网页设计的经验,从网页的内容、设计语言的选择、布局风格、数据库的应用、讨论区的创建以及网络安全等几个方面探讨了网页设计应注意的一些基本要素。     

一种新的人才培养模式——“动态能力集”工学结合人才培养模式研究

“动态能力集”工学结合人才培养模式强调能力是动态的、是一种集合。核心思想是依据行业需求，以就业为导向，以能力为中心，将实际工作岗位所需求的各种能力任务化、项目化，构建人才培养动态能力集。根据任务化了的动态能力集再确定相应的课程体系、动态的能力模块、动态的能力点，并采用工学交替、任务驱动的教学模式，做到真正的知行合一。     

动态优化与方法初探

本文综述了机械动态优化设计的各种方法,考查了这些方法的优缺点及其存在的问题,阐述了改进动态优化方法的途径。     

A modified model for dynamic properties of visual receptive field

The extended Gabor function model for visual receptive field ( RF) was modified by substituting the term related to time with two-order integral kernel of F function to generate a new model called modified Gabor function model of RF. A set of the modified Gabor models (MGM) can present the major spatiotemporal properties of neuronal receplive fields at different levels of primary visual pathway. The transient responses, dynamic properties of RF simulated by MGM, are in good agreement with the observations in electrophysiological experiments.