国有企业改革中解决政府与企业关系的理论方法

结合国有企业改革实际，从理论上分析了改革时存在的问题，并从管理技术上提出了政府企业管理的数学模型和方法，这对解决政府与企业关系有重要意义。     

基于排队模型的证书撤销机制分析

证书撤销机制是影响PKI服务可靠度的关键技术之一。根据撤销机制是否含有CRL服务器建立了两个基于排队论的数学模型，指出在较大规模下应用短周期证书策略是不合适的，并对分段CRL的优越性给出理论证明，最后，结合模型导出参数对实际应用中缓冲器容量的选取进行定性分析。     

基于第三方PKI认证的Windows2000登录系统的设计

提出了一种利用USB智能卡，把第三方独立的PKI认证系统与Windows2000登录控制结合起来的用户识别技术方案。首先简单介绍了Windows2000对智能卡登录的支持，然后提出并实现了一个利用USB智能卡技术，结合第三方的PKI认证，改造Windows2000用户识别的技术方案，有效地提升了Windows登录的安全性。     

一种基于数字证书的网络设备身份认证机制

提出了一种基于数字证书的网络设备身份认证机制，该机制利用一种新型的装置——“设备认证开关”对网络设备进行认证，对通过认证的网络设备接通网络连接，并对流经它的网络数据流进行实时监控，保证合法连接不被盗用。认证方法则采用了目前最先进的PK1技术。与现有的网络身份认证技术和系统相比，基于设备认证开关的网络设备认证机制将保护的边界拓展到了内部网络的最外缘，通过在网络设备的数字证书中嵌入简单的权限信息，可以自动地管理网络物理接口的使用。     

多协作证书验证代理系统

提出“多协作证书验证代理”MCCVA概念，可以集中担负验证任务；设计了统一的消息格式，屏蔽已有的验证方式中不同消息格式带来的不便，具有更好的扩充性；给出了多种消息的通信协作机制，具有一定的参考价值。     

有色冶金煤气系统负荷的联动调节

结合煤气发生站负荷调节新老系统的动作差异，介绍电动自调系统和油压自调系统的联动改造及在实际生产中的运行情况。     

PKI结构下公文交换系统安全体系研究

介绍了PKI框架下多种安全技术的应用，着重介绍了IP网络加密机、加密卡等硬件加密设备的实现原理和技术所构成的PKI结构下的公文交换系统安全体系。     

Ethylenethiourea in fruits: Optimization and in-house validation of a method by liquid chromatography tandem mass spectrometry,occurrence and dietary exposure assessment

Ethylenethiourea (ETU) is a toxicologically relevant degradation and/or biotransformation product of fungicides ethylenebisdithiocarbamates, that should be considered in a consumer risk assessment. The aims of this research were the validation of a method for analysis of ETU in fruits by liquid chromatography tandem mass spectrometry, the evaluation of ETU occurrence in fruits and ETU and dithiocarbamates dietary exposure assessment. The validated method was fitness for the purpose. Linearity was demonstrated between 1 and 25 ng/mL, without matrix effects. Recovery averages ranged from 75 to 110% for spiked samples at 1.0, 2.0 and 10.0 μg/kg, with relative standard deviation from 5 to 17%, indicating trueness and precision. The limits of detection and quantification were 0.5 and 1.0 μg/kg, respectively. Ninety samples of apple, papaya and strawberry were collected from different regions of São Paulo city and over all seasons of the year. ETU residues were found in 32 (35%) samples with levels ranging from 1.0 to 5.3 μg/kg. The exposure assessment to evaluate the health risk by eating fruit with ETU residues corresponded, respectively, for adults, teenager and children 0.05, 0.05 and 0.09% of the acceptable daily intakes (ADI) and 0.9, 1.1 and 1.6% of the oral dose for chronic non-carcinogenic effects. The contribution to the risk by consumption of food containing residues of dithiocarbamates, whereas the highest values found in the products monitored by the national Program in the period from 2001 to 2010 and the per capita food acquisition for urban population, represented 19.2% of the ADI (Mancozeb) for adult, 22.8% for teenager and 34.0% for children.     

Do driving restriction policies effectively motivate commuters to use public transportation?

Driving restriction policies have been implemented in some large Chinese cities to cope with severe urban smog pollution. We explored the roles of policy acceptance and other factors in commuters' transport mode decisions, based on the Theory of Planned Behavior. A questionnaire survey was conducted in Tianjin, China. A structural equation model was developed to test eight hypotheses, two of which were rejected. The results indicate that a driving restriction policy alone cannot effectively motivate commuters to use public transport if the policymakers fail to improve public transport, enhance commuters' awareness of consequences, increase commuters' perceived behavior control, and encourage car owners to change driving behavior. Comparisons between car owners and non-owners indicated that car owners view driving restriction policy and public transport more negatively. These negative views could be a barrier for the promotion of public transport among car owners. In addition, attitude toward public transport was found to have positive correlation with commuting time.     

The Biopolitics of Thirdspace: Urban Segregation and Resistance in Puerto Rico’s Luis Lloréns Torres Public Housing Project

The public housing programme in Puerto Rico was highly influenced by a culturally engrained logic of colonialism that aimed to achieve a behavioural transformation of the residents of public housing based on white “criollo” norms and conducts. To this day, the process of Othering with which these bodies are understood and viewed has recurrently been reproduced and redeployed utilizing the island’s old racial/colonial hierarchies. Criminality and drug-related activities are the main discursive agents employed to stigmatize the communities that live inside public housing in Puerto Rico. It is constantly inferred that most of its residents break with the behavioural norms that the rest of the population abides by. This argument is constantly utilized to perpetuate the cultural lens that views these sectors as lazy, unruly and dangerous. This highly prejudiced misconception justified the police occupations and the fences that were erected in and around public housing premises during the 1990s. However, most of these communities rarely view themselves as victims, and it is this paper’s argument that they are constantly and collectively enacting political and physical spaces of dissent, resistance and encounter that – however momentarily – are able to overturn some of these powerful ideological and spatial constructs.