不确定系统鲁棒控制方法及在火控系统中的应用

将Ｃｈｅｎ和Ｌｅｅ给出的线性不确定性系统设计的鲁棒方法推广到一类相当广泛的仿射非线性系统。并针对某双３５火炮的随动系统设计问题进行了仿真研究,仿真结果证明了方法的有效性。     

从毕业论文英文摘要看大学英语课程设置

《大学英语课程要求》规定了不同层次的学校实现不同的外语教学目标。根据武警学院的实际情况,把武警学院的教学目标定位于一般要求,即在两年的大英教学结束后,培养学生英语综合应用能力,特别是听说能力,使他们在今后工作和社会交往中能用英语流畅地进行口头和书面的信息交流,同时增强其自主学习能力,提高综合文化素养,以适应我国经济发展和国际交流的需要。但从实际看,情况并不乐观。所以,有必要开设英语选修课。     

基于语言评价与模糊数的群体意见共识方法

针对具有自然语言评价信息的群决策问题,给出了一种基于语言评价信息与梯形模糊数的群体意见共识方法.该方法先通过无量纲化处理、语言评价信息转换为梯形模糊数、对梯形模糊数进行集结等步骤,形成群体对方案的综合评价值(梯形模糊数);然后对群体意见进行共识分析和评价;最后对共识结果进行方案排序.通过对实例进行分析,表明该方法能得到切合实际的决策效果.     

英语教学应重视语言文化知识

语言与文化有着密切的关系。在英语教学中,文化教学的重要性不容忽视,因此,把传授文化知识融入英语教学之中,积极创设英语学习情境,提高学生对不同文化之间语言交际的理解,培养学生运用准确、流畅和得体的英语语言进行交际是十分必要的。     

Bayesian strategies for dynamic pricing in e‐commerce

E‐commerce platforms afford retailers unprecedented visibility into customer purchase behavior and provide an environment in which prices can be updated quickly and cheaply in response to changing market conditions. This study investigates dynamic pricing strategies for maximizing revenue in an Internet retail channel by actively learning customers' demand response to price. A general methodology is proposed for dynamically pricing information goods, as well as other nonperishable products for which inventory levels are not an essential consideration in pricing. A Bayesian model of demand uncertainty involving the Dirichlet distribution or a mixture of such distributions as a prior captures a wide range of beliefs about customer demand. We provide both analytic formulas and efficient approximation methods for updating these prior distributions after sales data have been observed. We then investigate several strategies for sequential pricing based on index functions that consider both the potential revenue and the information value of selecting prices. These strategies require a manageable amount of computation, are robust to many types of prior misspecification, and yield high revenues compared to static pricing and passive learning approaches. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

‘Trusty Bess’: the Definitive Origins and History of the term 'Brown Bess'

The aim of this article is to settle once and for all the question of the term ‘Brown Bess’, as applied to the British soldier’s musket. The specific origin and meaning of this obviously affectionate nickname has long confounded arms and armour scholars, re-enactors, and collectors alike. As a result, various possible solutions have been offered. The article outlines the historical usage of the name, including earlier written references not widely known in the field. The scope of the term is also addressed, using period sources to demonstrate what ‘Brown Bess’ meant to those who actually used the name historically. The many false etymologies of the name are assessed and found wanting or ‘debunked’ outright. Finally, drawing upon existing research from the field of linguistics, the article details the real meaning behind ‘Brown Bess’ the firearm and places ‘her’ in a wider sociohistorical context.     

论“军事语言学”的学科建设

军事语言学是以军事语言为研究对象,以语言学和军事学相关原理为基础发展起来的一门边缘学科。对军事语言学研究及其学科的内涵进行了分析,论证了“军事语言学”学科建设的必要性和可行性依据,提出了今后学科建设的主要努力方向。     

自然语言形式化研究中几个基本问题的再认识

针对目前自然语言形式化研究中存在的问题 ,就歧义性、形式化与系统模型等几个基本问题做了进一步的分析与讨论。认为 :歧义性有狭义与广义之分 ,有层次之分 ,又有形式化与非形式化之分 ,确定它们的界线是很重要的。如何使系统体现出自然语言的个性化是目前形式化研究中应引起注意的一个关键问题 ,为此还提出一个系统结构模型。     

单输入不确定系统离散变结构控制

研究单输入不确定离散时间系统的变结构控制设计问题.提出一种新形式的离散趋近律,它具有良好的动、静态特性,可有效消除由传统离散趋近律参数引起的抖振.设计扰动预估器以补偿不确定因素的影响,从而提高系统鲁棒性并进一步减弱抖振.仿真结果表明了所提设计方法的有效性.     

作战辅助决策中的不确定性信息处理方法

根据作战辅助决策的过程,分别分析了对不确定性信息的处理方法.实践证明,该处理方法具有较高的实用价值,可用于作战辅助决策的参考.