高职学生网上评教数据的修正与优化处理研究

针对高职学生网上评教存在的问题,采用评教验证机制设置不合理评教的限制。对学生评教数据先剔除异常值,再分别对不同班级、不同课程和不同院系之间的学生评教数据进行修正与优化处理,得出最终的修正分值,降低了因班级、课程和院系的不同而导致的评教数据的差异性,使学生的网上评教能更准确有效的反应出教师的教学水平。     

英语教学行为及其教学心理研究的宏观管理和优化

本文探讨了英语教学作为一个系统行为工程的宏观性管理及优化问题,提出了经济性原则、系统性原则、知识技能并重原则,为英语教学及教学心理研究提供理论基础。     

基于遗传算法的有柔性路径的动态调度问题研究

建立了有柔性路径的FMS动态调度问题的模型．采用离线重调度的方法，提出一种结合离线重调度两种生成调度方式的方法来阐述FMS的有柔性路径动态调度问题．最后给出了该问题的遗传算法解决方法和计算示例．     

New methods for fitting multiple sinusoids from irregularly sampled data

A novel framework is proposed for the estimation of multiple sinusoids from irregularly sampled time series. This spectral analysis problem is addressed as an under-determined inverse problem, where the spectrum is discretized on an arbitrarily thin frequency grid. As we focus on line spectra estimation, the solution must be sparse, i.e. the amplitude of the spectrum must be zero almost everywhere. Such prior information is taken into account within the Bayesian framework. Two models are used to account for the prior sparseness of the solution, namely a Laplace prior and a Bernoulli–Gaussian prior, associated to optimization and stochastic sampling algorithms, respectively. Such approaches are efficient alternatives to usual sequential prewhitening methods, especially in case of strong sampling aliases perturbating the Fourier spectrum. Both methods should be intensively tested on real data sets by physicists.     

Flow shop scheduling with deteriorating jobs under dominating machines

This paper addresses no-wait or no-idle flow shop scheduling problems with deteriorating jobs, i.e., jobs whose processing times are an increasing function of their starting time. A simple linear deterioration function is assumed and some dominating relationships between machines can be satisfied. It is shown that for the problems to minimize makespan or weighted sum of completion time, polynomial algorithms still exist, although these problems are more complicated than the classical ones. When the objective is to minimize maximum lateness or maximum tardiness, the solutions of a classical version may not hold.     

等温输油管线设计技术经济分析

本文从费用最省的角度出发,建立了计算等温输油管线最优技术参数的数学模型,并给出了数学模型的求解方法。     

The empirical analysis of the -bilateral optimized combinatorial auction model

This study proposes a new and highly efficient dynamic combinatorial auction mechanism—the N-bilateral optimized combinatorial auction (N-BOCA). N-BOCA is a flexible iterative combinatorial auction model that offers more optimized trading for multiple suppliers and purchasers in the supply chain than one-sided combinatorial auction. We design the N-BOCA model from the perspectives of market architecture, trading rules, and decision strategy for winner determination, the decision strategy for winner determination needs flexible optimization modeling capability. Thus rule-based reasoning was applied for reflecting the flexible decision strategies. We also show the viability of N-BOCA through Paired Samples T-test experimentation. It shows that N-BOCA yields higher purchase efficiency and effectiveness than the one-auctioneer to multi-bidders (1-to-N) combinatorial auction mechanism.     

我国外汇储备:效用最优化及其运用策略

截至2006年9月,我国外汇储备余额为9879亿美元,距万亿美元仅一步之遥,且仍以每月数百亿的速度增长。如何看待和管理高额外汇储备?学术界争锋甚烈,但细察争议,大多“打转”在诸如储汇规模、引汇来源(引资与创汇)和持汇结构等单一层面,既未切换到外汇储备的运用策略(包括间接用汇与直接用汇)层面,更未上升到储汇效用最优化这一全新视角去分析。笔者认为,在我国成为全球最大外汇储备国的背景下,亟需就储汇效用最大化问题展开深入研究;虽然目前对此问题的研究尚属初期,但其指向却相当分明:所谓储汇效用最优化,是指融储汇规模、引汇来源、持汇结构、用汇去向于一体的反复优化的选择行为或动态协调的平衡过程。     

高等教育布局结构优化的理论前提

作为经济社会发展的重要助推力量,高等教育布局结构优化的影响因素是多维的,主要包括国家战略、区域经济、社会文化、人口结构以及地理空间等等.科学预设高等教育布局结构优化的应然目标,需要正视布局结构优化的目标限度,并重点从"社会满足度"和"个体满足度"两个方面予以考量.实施高等教育布局结构的优化,需要甄选多向度的优化理路,实...     

Setting tolerance limits for statistical project control using earned value management

Project control has been a research topic since decades that attracts both academics and practitioners. Project control systems indicate the direction of change in preliminary planning variables compared with actual performance. In case their current project performance deviates from the planned performance, a warning is indicated by the system in order to take corrective actions.Earned value management/earned schedule (EVM/ES) systems have played a central role in project control, and provide straightforward key performance metrics that measure the deviations between planned and actual performance in terms of time and cost. In this paper, a new statistical project control procedure sets tolerance limits to improve the discriminative power between progress situations that are either statistically likely or less likely to occur under the project baseline schedule. In this research, the tolerance limits are derived from subjective estimates for the activity durations of the project. Using the existing and commonly known EVM/ES metrics, the resulting project control charts will have an improved ability to trigger actions when variation in a project׳s progress exceeds certain predefined thresholdsA computational experiment has been set up to test the ability of these statistical project control charts to discriminate between variations that are either acceptable or unacceptable in the duration of the individual activities. The computational experiments compare the use of statistical tolerance limits with traditional earned value management thresholds and validate their power to report warning signals when projects tend to deviate significantly from the baseline schedule.