对央视新址北配楼火灾的思考

从央视新址北配楼火灾着手,通过分析火灾的特点,从加强烟花爆竹安全管理及宣传教育、建筑外部装修消防安全、改进对建筑工程及施工现场的消防监督工作和对高层建筑限高、加强“六熟悉”方面提出了防止类似高层建筑火灾发生的措施。     

谐波信号选取对引信启动概率影响分析

目标有效反射面积影响引信的作用距离,进而影响引信的启动概率.针对某比相引信在射击隐身目标时启动概率很低的情况,在分析不同谐波信号对引信作用距离影响的基础上,提出选择其他谐波成分作为幅度支路,与原比相引信构成复合引信,解决了射击不同目标时引信启动概率较低的问题.     

基于辐照度标准传递的辐亮度校准系统

介绍了一种新型辐亮度校准系统,通过溯源至国家辐照度标准,构建了军用光辐射校准平台。对系统的测量不确定度分析表明,该系统可以满足装备计量保障对测试不确定度比的通用要求,适用于装备专用检测设备的辐亮度校准。     

嵌入式数据库SQLite的安全机制分析与设计

针对开源的嵌入式数据库SQLite存在的安全问题,在分析常用的数据库安全机制的基础上,为其设计了一套可行的安全机制。将口令认证与数据加密结合,通过增加密钥创建、数据加解密、页面编码以及事件记录等代码,实现了更安全的SQLite数据库。测试结果表明：该系统在继承其嵌入式数据库特点的同时,安全性得到提高。     

中美军事关系的回顾

中美关系是当今世界最重要的一对大国关系,而军事关系则是其中最为敏感和不确定的环节。早在第二次世界大战时期,尚处于在野党地位的中国共产党及其领导的武装力量就和美国当局进行了早期接触。中华人民共和国成立后,中美军事关系经历了从对抗到合作,再到合作与斗争并存的曲折历程。对中美军事关系进行回顾,有助于把握中美关系的大局,推动两军关系走上平稳发展的轨道。     

性能化建筑防火设计优势探讨

通过对性能化设计和＂处方式＂设计方法的比较,阐述了性能化设计的意义,分析＂处方式＂设计的不足,论述性能化设计的必要性,并提出了对性能化设计方法的应用和发展性能化规范的建议。     

加强处突维稳任务中政治工作需要着力把握的几个问题

加强处突维稳任务中政治工作必须不断强化官兵警魂意识,始终做到听党指挥,依法行事;注重强化官兵战斗精神,始终保持昂扬的斗志;切实增强官兵群众观念,认真践行服务人民的根本宗旨;采取有效方式方法,及时消除官兵心理障碍;精心组织新闻宣传,切实掌握舆论主动权;及时创新方法手段,增强政治工作实效。     

省军区坚持以人为本创新思想政治工作的调查思考

省军区系统思想政治工作贯彻以人为本,必须把强调高度集中与包容兴趣爱好统一起来;把倡导岗位建功与尊重个人追求统一起来;把强化服从意识与维护民主权利统一起来;把提倡吃苦奉献与关爱身心健康统一起来。     

Timing of information acquisition in a competitive environment

This article investigates the impact of timing on sellers' information acquisition strategies in a duopoly setting. Market uncertainty is captured by a representative consumer who has a private taste for the product's horizontal attribute, and both sellers can acquire this information either before (ex‐ante acquisition) or after (ex‐post acquisition) observing their own product qualities. We identify several conflicting effects of information acquisition that vary significantly in its timing and market characteristics. In the monopoly scenario, information acquisition is unambiguously beneficial and ex‐ante acquisition is the dominant option, because it helps a seller not only design the proper product but also craft better pricing strategy. By contrast, when there is competition, information acquisition eliminates the buffer role of market uncertainty and leads to the fiercest production or pricing competition, which makes the subsequent effects of acquisition detrimental, and a seller's payoff is nonmonotonic in terms of its acquisition cost. Moreover, compared with the ex‐ante information acquisition, ex‐post information acquisition normally generates higher sellers' equilibrium payoffs by postponing the timing of acquisition and maintaining product differentiation. Nonetheless, ex‐post information acquisition also provides the seller with greater acquisition incentive and occasionally makes him worse off than that in the ex‐ante scenario. Thus, in a competitive environment, having the option of information acquisition and flexibility in its timing can be both detrimental and irresistible. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 3–22, 2016     

Nonlinear pricing with consumer satiation

In various scenarios, consumers may become satiated with products, and the degree of satiation is directly associated with their prior experiences. Confronted with consumer satiation, the seller is unable to either identify consumers who have a higher likelihood of being satiated ex ante or distinguish satiated from non‐satiated consumers ex post. Therefore, the seller should address dynamic selling, valuation uncertainty, and quantity decisions, all of which are important operational issues. We consider a two‐period problem in which consumer types are influenced by their prior consumption experiences. Faced with these consumers, the seller intends to optimize quantities and adjust the prices of the products in each period to maximize revenue. We find that the seller may reduce ex ante production quantity as some consumers become satiated. Moreover, the ex ante quantity is first decreasing and then increasing with regard to the satiation rate. Furthermore, two‐period information asymmetries may provide a rationale for upward distortion in quantity when consumer preferences are highly sensitive to first‐period consumption. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 386–400, 2016