关于概率论学习障碍的分析与对策

对大学生学习概率论的障碍因素进行分析,得出影响概率论学习的障碍因素包含三方面:直观能力,概率思维品质,心理因素及情感,并分析了这几方面因素,给出克服这些障碍的相应对策,以期能从根本上改进传统教学方法,更新传统教学理念.     

天顶附近三轴光电跟踪系统Z轴运动状态分析

针对三轴光电跟踪系统在地平式盲区内的跟踪策略所具有的多样性,对天顶附近三轴光电跟踪系统Z轴运动状态进行了分析.仿真结果表明：地平式盲区内Z轴做匀角速运动有利于     

一厂多商联盟的利润分享方案和整段返利方法的确定

供应链中厂家与商家是一种合作竞争关系.本文从一厂一商型联盟的最大利润化的销售问题入手,在追求厂商供应链利润最大化的前提下,建立了一厂多商型联盟的利润模型.基于该模型,确定了联盟及厂商均可增加利润的分享方案,提出了基于分享方案而实行非固定的整段返利的数学表达式,且对整段返利的机制进行了讨论.研究结论表明用这一方法建立的返利机制,可以保障厂商联盟利润分享方案的实施.     

Second-order game problem: Decision dynamics in gaming phenomena

The paradigm of decision dynamics (Ref. 1) is used to describe the decision dynamics involving more than one decision-maker. The framework supplied in this paper is different from traditional game theory or differential games. Traditional simplicity assumptions are replaced by a more complicated, but more realistic, setting. Although many mathematically beautiful results in traditional game theory or differential games have disappeared in second-order games, the more realistic setting of the latter does make it easier for the decision-makers to find agood decision. Concepts of time optimality and time stability, and their necessary and/or sufficient conditions are described. Unconventional concepts of strategies and uncertainty involved in gaming phenomena are discussed. A highlight of the paper is a systematic discussion on reframing tactics of gaming situations, which do not exist in the context of traditional game theory or differential games. Various research topics are discussed at the end of the paper.     

Use of military training doctrine to predict patterns of maneuver disturbance on the landscape. I. Theory and methodology

Modern-day military maneuvers, involving tactical formations of wheeled and tracked vehicles, can have significant physical and environmental impacts on the landscape. Numerous scientific studies of these impacts have been conducted, most notably the post-impact assessments of General Patton’s tank maneuvers of the early 1940s in the Mojave Desert of California and Arizona. On a smaller scale, numerous studies of military vehicle impacts have been conducted on military training lands throughout the United States, Canada and Europe. These studies have used a variety of measurement techniques, to include ground level photography and in situ measurements, aerial photography, satellite imagery and vehicle-mounted global positioning systems (GPS) data to define the footprint, patterns and magnitude of disturbances on the landscape. These disturbances are highly variable and can occur over tens of thousands of acres. Because scientists and land managers are generally not familiar with military decision-making, tactical doctrine, and vehicle–weapons systems capabilities, it is difficult for them to predict patterns of disturbance a priori. Even during post-event impact analysis, a full understanding of why and how maneuver disturbance patterns occur may not be readily apparent to them. This limitation can preclude knowledgeable planning, design and repair of damaged lands. In this case study, military tacticians and physical scientists developed an integrated methodology to predict these disturbance patterns more explicitly. The goal of the study was to provide land managers with a tool for understanding how these patterns evolve, and in turn, allow them to better plan and design mitigation efforts to sustain the landscape. The methodology combines a military terrain analysis technique, the modified combined obstacle overlay (MCOO), with an applied military tactics filter to predict where vehicle impacts would be most likely. A terrain and tactical analysis of the landscape at the Combat Maneuver Training Center-Live Fire (CMTC-LF) Area at the US Army Grafenwöhr Training Area, Germany, was conducted using maps, digital ortho-photography, spatial data and on-site reconnaissance to determine the tactical footprint and potential disturbance patterns caused by a new training mission. Part I of this study describes the background, theory and approach used to develop the methodology. Part II describes the field-based validation of the methodology, using post-maneuver ground observations and sampling to test the methodology’s predictions.     

电子产品整机维修备品管理策略

电子产品整机(以下简称整机)维修备品管理是整机生产及售后服务管理的一个重要环节。本根据整机维修和生产中的实际情况，通过对备品分类，建立计算模型，求得各备品用于维修的预留量，并设计表格直接供生产和维修管理用。     

“再创造”教学策略的应用

由于数学内容及数学方法所具有的特点,在高等数学教学中,运用“再创造”教学策略,培养学生学习数学的兴趣,提高学生创造性思维及逆向思维能力.     

Practical Tactics in Resolution of Racemates via Diastereomeric Salt Formation

A practical tactics in the classical resolutions was illustrated for affording the desired isomers in maximum yields. According to the practical tactics resolution of racemic ethyl nipecotate, Corey lactone and huperzine A intermediate was successfully practiced. The basis of this practicability is the well-known Marckwald principle.     

CPI指数变换对产品销售影响的可拓数据挖掘

目前对数据挖掘的研究主要集中在对静态数据的挖掘,而在实际工作中,经常要处理的矛盾问题,需要通过可拓变换和可拓变换的运算来解决,这就需要用到变换的知识,需要运用动态数据挖掘或可拓数据挖掘来解决问题.运用可拓逻辑和可拓数据挖掘的理论知识,根据国家消费者物价指数的变换对产品销售数据的影响来研究可拓数据挖掘中传导知识的挖掘,为企业的决策者在目前的市场环境下提出更加合理的销售策略提供依据.     

The Resolution Method for One Reducible Class of Formulas of the First-Order Modal Logic S4

In the paper, we describe a resolution method for the family of the formulas of the form *ⁱ**(L ₁ L _s ), where i = 0 1 and L _j are modal literals. Negations here stand directly before classical atomic formulas, the formulas may contain constants. We also present the absorption tactics for a set of such formulas.__________Translated from Lietuvos Matematikos Rinkinys, Vol. 44, No. 4, pp. 481–492, October–December, 2004.