几种典型凸轮裹包执行机构的从动系统运动规律的理论分析

详细分析了裹包执行机构的正弦型和正切型从动系统的运动规律，用数学方法对运动规律进行了详尽的理论分析。     

悬索桥主缆除湿防腐蚀技术应用和探讨

主缆是悬索桥的“安全生命线”。由于处在跨越江河湖海和承力的环境下,主缆必须进行特殊防护。利用除湿系统干燥主缆内部空气,使湿度保持在一定范围内．可以减缓主缆钢丝的腐蚀。结合传统的主缆缠丝涂装防护方法,分析和讨论除湿系统在主缆防护工程中的应用。     

An overview of the model integration process: From pre-integration assessment to testing

Integration of models requires linking models which can be developed using different tools, methodologies, and assumptions. We performed a literature review with the aim of improving our understanding of model integration process, and also presenting better strategies for building integrated modeling systems. We identified five different phases to characterize integration process: pre-integration assessment, preparation of models for integration, orchestration of models during simulation, data interoperability, and testing. Commonly, there is little reuse of existing frameworks beyond the development teams and not much sharing of science components across frameworks. We believe this must change to enable researchers and assessors to form complex workflows that leverage the current environmental science available. In this paper, we characterize the model integration process and compare integration practices of different groups. We highlight key strategies, features, standards, and practices that can be employed by developers to increase reuse and interoperability of science software components and systems.     

SunOS下基于一次性口令和封装保护的网络安全设计与实现

多数网络守护神的实现很少考虑全球性访问的卷入问题,在某些情形下,这样的访问可允许灵敏信息的全球发布,如加密口令。在其它情形下,运行在网络任何地方的进程都会引起局部变化。针对可能出现的这些问题,在SumOS环境下,在防火墙上实施一次性口令认证以及封装保护措施,主些措施实现起来比较容易,而且可增强网络的安全性。     

Wrapping of Web Sources with restricted Query Interfaces by Query Tunneling

Information sources in the World Wide Web usually offer two different schemes to their users, an Interface Schema which the user can query and a Result Schema which the user can browse. Often the Interface Schema is more restricted than the Result Schema, moreover many sources offer keyword-search interfaces only. Thus query capabilities of such sources are very small and a useful integration into a mediator-based information system using query capabilities is almost impossible. We propose the Query Tunnelling architecture for the wrapping of these restricted web sources. Wrapping of sources by Query Tunneling hides restrictive query interfaces and makes such sources fully queryable based on their result schema. The process of Query Tunneling is divided into two main steps, Query Relaxation to make a higher order query suitable to a restricted interface and Result Restriction in order to filter the results using the original query.     

纳米SnO2包覆TiO2光催化剂的制备及光催化活性研究

利用均匀沉淀法制备了纳米SnO2包覆TiO2的光催化剂，通过XRD、紫外光谱、色谱-质谱和光催化氧化焦化废水实验，分析和检验了该光催化剂的光催化活性。结果表明：SnO2包覆TiO2对光催化活性的提高是可行的，SnO2包覆量大于5％时提高效果较明显。     

热轧地下卷取机助卷辊控制系统改造

原卷取机助卷辊气动系统刚性不好,冲击振动大,事故频繁,零部件使用寿命短,产品卷形差.助卷辊改为电液伺服阀自动跳跃控制后,最大限度地消除了带钢头部凸度冲击载荷,实现了位置、压力交替控制,产品质量提高,故障大幅度下降.     

YB50全自动硬币计数、包卷机的研制

介绍了YB50全自动硬币计数、包卷机的系统组成、工作原理及其控制技术。     

一种改进型环网保护机制的设计与实现

为满足ITU-T标签本地化的要求,讨论了一种改进型的基于Wrapping保护的环网保护方案,详细论述了通路建立与倒换机制,介绍了相关功能模块的架构,并对保护倒换时间进行了测试验证。该环网保护方案的保护倒换时间满足工程应用50 ms要求,可为分组传送网承载业务提供有效的网络级保护。     

带传动设计方法新探

指出了传统设计方法在设计V型带传动时的不足之处，提出了一种新的设计方法，并且通过设计实例结果的对比，充分体现了新方法的优越性。