查询词典 security guard

aining at high impedance weak signal measurement,the relations among measuring precision,input impedance and input bias current,the guard technology is applied to design a measuring circuit with guard circuit,adding a guard potential to low-impedance nodes of circuit,the effect of leakage current is reduced.using spice simulation and validates that guard circuit can increase the input impedance of the system and lower the input bias current,the results show that the guard circuit provids a valuable solution for high accuracy measurement of the high impedance weak signal.

摘 要：针对高阻抗微弱信号测量问题，对测量精度与系统输入阻抗、输入偏置电流的关系进行分析，应用保护技术设计了带保护电路的测量电路，将电路中的低阻抗节点加上保护电势，减小漏电流的影响。通过pspice仿真分析，验证保护电路能提高测量系统的输入阻抗和降低输入偏置电流，结果表明保护电路技术能实现对高阻抗微弱信号的高精度测量。

Napping , off-guard , off one's guard , off his guard , off her guard , off your guard

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This thesis deeply researches the J2EE security strategy on the application tier of enterprise system. The security strategy predigests the information security model and meets the security requirements expediently. But there are some disadvantages when the security requirements become more complex. The expositive security on the Web-Tier can not offer more information for authentication; there is no authentication for EJB-Tier to use, make the EJB-Tier depend on the Web-Tier; J2EE uses database or application server to manage the role information. Use database to manage the role information will increase the complex of enterprise application, and the way of application server will reduce the ability of migrate other J2EE platform. To solve these problems, the thesis designs an improved security strategy model.

本文从企业级系统应用层安全的角度出发，深入研究J2EE多层体系结构的安全策略模型。J2EE提供的安全策略简化了系统的信息安全模型，能够很方便地满足基于J2EE的分布式应用系统的安全需求，但是在面对更加复杂的安全需求时，J2EE安全策略在验证授权和角色管理中还存在不足之处：其在Web层的声明式验证机制无法为用户提供更多验证信息，可扩展性较差；在EJB层缺少业务逻辑层可供采用的验证机制，而是借助于Web层的验证机制，其耦合程度较高有悖于业务逻辑分离于表现逻辑的原则；在角色管理方面，J2EE采用数据库或者应用服务器来管理角色信息，其中，数据库管理角色的方式增加了应用开发的复杂度，应用服务器管理角色降低了系统的可移植性，两者都具有片面性。

Currently it still exists many problems in Social Security System, such as incomplete legal institutions of social security, incapacious scope of security coverage, insufficient social security funds, disordered department functions and third sector's laggard development in social security system even though we have achieved obvious fruits in the reform of Social Security System, relatively increased the scale and level of social security too.

虽然我国社会保障体制改革取得了有目共睹的成绩，社会保障规模和水平也相对提高，然而我国的社会保障体制还存在着社会保障法律制度不完善；保障覆盖面狭小；社会保障资金不充足；部门职能混乱和社会保障第三部门发展缓慢等问题。

Reform the goal with development to orient according to the social security system,social security fund is it should is it give consideration to social goal,economic goal,political goal to insist on to raise for,give consideration to the long—term goal and short—term goal, realiz.e combining fairly with efficiency;The social security fund must divide the responsibility border among government,unit,individual to raise rationally,define that govemment and function of the market divide the work;Social security fund is it must pay attention to macroscopical system way choose,is it pay attention to micro technical design and application of field to want too atthe same time to raise for;Social security fund is it should take different raising the way for,raising the way for to different social security project to raise for;Social security fund is it should distinguish regular financial need raising waying,principling of raising the way for etc.different from provisional financial need to raise for.

根据社会保障制度改革与发展的目标定位，社会保障基金筹集应当坚持兼顾社会目标、经济目标和政治目标，兼顾长期目标与短期目标，实现公平与效率相结合；社会保障基金筹集必须合理划分政府和单位、个人之间的责任边界，明确政府与市场的合理职能分工；社会保障基金筹集必须重视宏观制度方式选择，同时也要重视微观领域的技术设计与应用；社会保障基金筹集应针对不同的社会保障项目采取不同筹集方式、筹集途径；社会保障基金筹集应区分经常性资金需要和临时性资金需要采取不同的筹集方式、筹集途径等原则。

This product use special-purpose materials, bear cooling agent, against oil, grinding wheel froth and iron filings and so on; The guard shield has the traveling schedule long and reduces the small merit; Guard shield's bellower speed may amount to the 200m/minute; In the guard shield any metal parts, have not needed to worry the guard shield works when to present the components to become less crowded, but creates the serious broken link to the machine, has the best security.

该产品使用专用的材料，耐冷却剂、防油、砂轮沫和铁屑等等；护罩具有行程长和压缩小的优点；护罩的风箱速度可达200m/分；护罩内没有任何金属零件，不用担心护罩工作时会出现零件松动而给机器造成严重的破环，具有最佳的安全性。

Provable Security is a formal method for proving the security of cryptographic schemes, in which the difficulty of breaking a particular scheme is formally related to that of solving a widely believed computational hard problem. Provable security has already become an important theme of theoretical researches in modern cryptography. This dissertation investigates the provable security of public-key encryptions and hybrid encryptions of asymmetric and symmetric encryptions. This includes the various formal security notions and the constructions can be proved to achieve them. Among the constructions, hybrid encryptions are themselves an important way to obtain public-key encryption schemes with chosen ciphertext security. The main results are as follows:(1) The one-wayness of the trapdoor one-way function in NTRU depends on the randomness of the session key, which is different from previous ones. Based on this observation, a new kind of trapdoor one-way function, trapdoor one-way functions with an auxiliary random variable is proposed.

可证明安全性是一种证明密码学方案安全性的形式化方法，它将密码学方案的安全性归约为公认的计算难题，已成为现代密码学领域中理论工作的主线，本文主要研究公钥加密与单双钥混合加密的可证明安全性，这包括它们的各种形式化安全性定义以及达到这些安全性定义的方案构造，而单双钥混合加密本身也是一种构造选择密文安全公钥加密的重要方法，本文得到的主要结果如下：(1)在研究NTRU公钥加密的特殊性基础上，对于公钥加密的陷门单向函数加密模型进行了扩展，提出了具有辅助陷门单向函数的概念，并将其扩展到多元的情况，讨论了可能的密码学用途。

This paper,after reviewing endowment insurance,cooperation medical treatment,bottommost life security and immigrant worker's security,concludes the following problems in rural social security system of Heilongjiang: wide coverage of security with lower insurance payment;many problems existing in implementing new-type rural cooperation medical system and bottommost life security system;ever-increasing government's focus on immigrant worker's security.

黑龙江省是一个农业大省，在确保全国粮食供应方面做出了很大贡献。近年来，随着经济发展和社会进步，黑龙江省的农村社会保障制度建设也有了一定发展。但是，不可否认的事实是，黑龙江省农民的一些生产和生活仍然缺乏必要的保障，如农村养老保险问题、看病问医困难的问题等等。

From the aspects of systematology and tourist geology, tourist security is taken as a risk system, which is a special complicated and correlated system consisting of the tourists and the environment of the scenic spot. The implication, formation, structure and the research content of tourist security are preliminarily explored; and the security analysis, security assessment, and security measures of the system are correlatively studied so as to find sane solution of the security problem existing in the development of modern tourist industry.

笔者从系统论和旅游地理学的角度，把旅游安全作为一个风险系统进行研究；认为旅游安全风险系统是由旅游者与旅游景区环境共同组成的一个复杂的特定的相互依赖的系统；初步探讨旅游安全风险系统的组成、结构和研究内容；对旅游安全风险系统的安全分析、安全评价和安全措施进行了相关研究；通过研究，以期弄清现代旅游业发展中存在的安全问题，提出旅游安全风险对策。

This paper carries on the discussion and collects to the security risk factor of such aspects as the technology, management and system, etc. And propose a Measurement-based Improvement Operation for Software Security Risk (SEcurity Risk Improvement Operation; SERIO). Applying the SERIO to software development, can help to find out the potential security risk, derive out improvement of the security risk and control operation, and increase the security of the software system effectively.

本文针对技术、管及制等层面的安全风险因子进探讨与搜集，且提出一套以测为基础的软体安全风险改善作业(SEcurity Risk Improvement Operation； SERIO)，协助软体开发过程中，找出潜在的安全风险，且衍生出安全风险的改善与监控作业，有效提高软体系统的安全性。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。