某型枪弹火药性能对内弹道性能影响试验研究

通过对某型枪弹 (如经过技术处理的正常弹、减量弹、加温弹、干燥弹及受潮弹 )初速和最大膛压的测定 ,得出火药的药量、初温及挥发份对内弹道性能 (如膛压、初速 )有较大影响 ,因此 ,必须严格控制弹药的储存条件及装药量。     

松耦合设计在计算机脆弱性测评系统中的应用

运用松耦合设计思想,对计算机脆弱性测评系统中两个子系统的组成和实现进行了研究。提出多准则测评子系统的Web数据库实现和CVE测评子系统的多层MAS实现方法,并对其实现算法和技术要点进行了论述。     

漏磁信号特征提取及检测研究

介绍了漏磁检测原理和用有限元法计算漏磁场的方法,漏磁场法向分量的峰-峰值随缺陷深度增加而增加,峰-峰值间隔随缺陷宽度增大而增大。在检测中,先去除漏磁信号的奇异值,然后用峰-峰值算法提取缺陷信号特征,根据信号的峰-峰值大小和信号梯度变化作为缺陷判别标准。     

一种面向故障的软件测试新方法

面向故障的软件测试方法是今后软件测试技术研究的主要内容.和传统的面向整个软件的测试方法相比,面向故障的测试方法对故障的检测针对性更强,特别是对传统测试方法难以检测的故障如存储器泄露故障、数组越界故障、空指针引用故障等的检测是非常有效的.从方法学上讲,面向故障的测试方法标志着一个测试理论的成熟,在测试方法学中具有里程碑的意义.面向故障测试方法有2个问题需要解决:①软件的故障模型,②面向该模型的自动测试方法,此文重点论述软件的故障模型问题.     

数据驱动自动化测试方法研究

介绍了一种数据驱动方法,用以实现自动化测试.通过对测试数据的产生及选取、控制数据调度的研究发现,不仅应用更灵活的数据驱动方法,对程序进行更深、更广的测试,而且无需编写脚本,只需填写测试表,即可完成全面的自动化测试.这样,即使非技术人员也能够开发测试数据,完成数据驱动自动化测试.     

Equity in genetic newborn screening

State‐level newborn screening allows for early treatment of genetic disorders, which can substantially improve health outcomes for newborns. As the cost of genetic testing decreases, it is becoming an essential part of newborn screening. A genetic disorder can be caused by many mutation variants; therefore, an important decision is to determine which variants to search for (ie, the panel design), under a testing budget. The frequency of variants that cause a disorder and the incidence of the disorder vary by racial/ethnic group. Consequently, it is important to consider equity issues in panel design, so as to reduce disparities among different groups. We study the panel design problem using cystic fibrosis (CF) as a model disorder, considering the trade‐offs between equity and accuracy, under a limited budget. Most states use a genetic test in their CF screening protocol, but panel designs vary, and, due to cost, no state's panel includes all CF‐causing variants. We develop models that design equitable genetic testing panels, and compare them with panels that maximize sensitivity in the general population. Our case study, based on realistic CF data, highlights the value of equitable panels and provides important insight for newborn screening practices.     

卫星地面站自动测试软件的“三化”设计

应用MVC设计模式,采用PIM应用架构,通过动态链接库和构件技术,对卫星地面站自动测试软件进行了通用化、系列化和组合化设计。     

舰空导弹武器系统软件靶场综合测试分析

针对舰空导弹武器系统的特点以及舰空导弹武器系统软件定型试验的现状,指出了舰空导弹武器系统软件靶场测试的必要性、特殊性。通过靶场软件测试综合试验,总结了舰空导弹武器系统软件靶场定型的试验方法。并指出了靶场软件测试的发展方向。     

爆炸复合接头剪切强度测试方法研究

参照正交各向异性层压复合板层间剪切强度的测试方法,提出了用于测试爆炸复合接头复合界面剪切强度的3种方法;并建立三维有限元模型,分别对3种测试方法进行模拟;最后分别对3种方法进行了测试试验.结果表明,3种试验方法均能有效测试爆炸复合接头的剪切强度,其中对称试件双切口拉伸法最适合实际应用.     

NONPROLIFERATION POLICY CROSSROADS:

On October 1, 2008, Congress enacted a proposal that originated with President George W. Bush in 2005 to approve an unprecedented nuclear trade pact with India by removing a central pillar of US nonproliferation policy. Despite the numerous political challenges confronting the Bush administration, the initiative won strong bipartisan support, including votes from Democratic Senators Joseph Biden, Hillary Clinton, and Barack Obama. The four-year struggle to pass the controversial US-India nuclear trade agreement offers an exceptionally valuable case study. It demonstrates a classic tradeoff between the pursuit of broad multilateral goals such as nuclear nonproliferation and advancement of a specific bilateral relationship. It reveals enduring fault lines in executive branch relations with Congress. It vividly portrays challenges confronting proponents of a strong nonproliferation regime. This article is based on an analysis of the negotiating record and congressional deliberations, including interviews with key participants. It assesses the lessons learned and focuses on three principal questions: how did the agreement seek to advance US national security interests?; what were the essential elements of the prolonged state-of-the-art lobbying campaign to win approval from skeptics in Congress?; and what are the agreement's actual benefits—and costs—to future US nonproliferation efforts?