What predicts psychological resilience after disaster? The role of demographics, resources, and life stress.

A growing body of evidence suggests that most adults exposed to potentially traumatic events are resilient. However, research on the factors that may promote or deter adult resilience has been limited. This study examined patterns of association between resilience and various sociocontextual factors. The authors used data from a random-digit-dial phone survey (N = 2,752) conducted in the New York City area after the September 11, 2001, terrorist attack. Resilience was defined as having 1 or 0 posttraumatic stress disorder symptoms and as being associated with low levels of depression and substance use. Multivariate analyses indicated that the prevalence of resilience was uniquely predicted by participant gender, age, race/ethnicity, education, level of trauma exposure, income change, social support, frequency of chronic disease, and recent and past life stressors. Implications for future research and intervention are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

性能优异的阴地-栅地电路能让胆机更靓声

阴地-栅地电路作胆机输入级电压放大电路,不论用于胆前级或是胆功放作输出级电压放大,均能得到良好的放音效果。文中将具体介绍阴地-栅地电路的工作原理、性能及其元器件的选配。     

Link 11数据链干扰技术

从Link11数据链的数学模型入手，分析其在噪声干扰、单音干扰、多音干扰等下的误码性能。仿真结论表明，对Link11的干扰技术中，不论采用噪声干扰，或者是采用单音或多音干扰，只要掌握其工作原理，就可以采取适当方式对其进行干扰。从另一方面可以看出，Link11由于易损性等原因，已经暴露了许多不尽人意的缺点，一种新型的数据链——Link22产生，并对其特点作了简单分析。     

基于USBKEY的CSP与PKCS#11互通的实现方法

由于CSP(cryptographic service provider)和PKCS#11是目前PKI体系中应用最广泛的两种基于硬件加密设备的接口标准,因此让这两者之间兼容具有重要的现实意义.介绍了CSP和PKCS#11的概念,分析了两者在密钥管理、数据保存和安全机制方面的不同,提出了由CSP调用PKCS#11.在PKCS#11中自定义一个接口,主要由该接口来实现CSP中的容器、密钥管理等功能.最后展开阐述了实现PKCS#11与CSP互通的具体操作方法.     

Captured Kriegsmarine Enigma Documents at Bletchley Park

Abstract

The discovery of intercepts in the Japanese “Orange Translations” regarding the sinking of merchant ships (marus) bearing allied POWs led to the conclusion that the Joint Intelligence Center Pacific Ocean Area (JICPOA) gave latitudes and longitudes of these vessels to the Commander, Submarine Force, Pacific (ComSubPac) knowing that POWs would be killed. An examination of the “Orange Translations” reveals that most of the intercepts are from the Japanese Water Transport Code (2468) system, not the “Maru Code” (JN-11). The author concludes that while JICPOA provided ComSubPac with convoy coordinates, they were unaware of the presence of POWs on the marus.     

粮仓无线温湿度监控系统

设计了一个粮仓温度湿度监测系统,从机采用温湿度传感器SHT11对温度、湿度进行采集后通过无线模块PTR2000发送,主机接收后计算出温度、湿度值显示在液晶屏上,无线通讯对发送数据进行CRC校验提高了数据传输的可靠性。系统发射部分以AT89C2051为核心,包括采集模块,无线发射模块;接收部分以AT89S52为核心,将无线接收,液晶显示等模块结合起来,该系统可广泛应用到粮仓等场合中。     

投影光刻机中PDP-11主控制计算机系统的替换

介绍了针对早期的投影光刻机存在PDP-11计算机速度慢,控制系统难操作的问题,利用普通PC机通过GPIB卡替换了PDP-11计算机,使用VB语言编写的程序替换了主控制系统程序。     

微波晶种法快速合成ZSM-11分子筛

以硅溶胶、硫酸铝和氢氧化钠为原料,以四丁基溴化胺(TBABr)为模板剂,在预置晶种条件下,采用微波辐射加热方法和传统加热方式水热合成了ZSM-11分子筛,考察了分子筛合成中晶种、加热方式以及钠离子对ZSM-11结晶过程的影响,并采用XRD和激光粒度仪对合成的分子筛进行了表征.结果表明,不同晶种对ZSM-11生长的促进能力依次为ZSM-11＞ZSM-5/ZSM-11＞ZSM-5,即同质晶种更有利于快速生成高结晶度的ZSM-11分子筛,且晶种的加入量与产物结晶度基本呈线性关系;微波辐射加热方式相对于传统加热方式,可以大大缩短成核诱导期,加快晶体生长速率,体现了其快速合成的特点;样品结晶度随初始原料体系中钠离子含量的增多而降低,与钠离子相关的微波局部过热被认为是影响ZSM-11分子筛结晶度的一个重要因素.