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safety
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  安全
    Research on Error-Correcting Codes and Sequence Ciphers Over Finite Rings in Information Safety
    信息安全中有限环上的纠错码和序列密码研究
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    The Model and Application of Urban Traffic Emergency Management and Safety System
    城市交通紧急事件处理与安全系统模型及应用研究
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    THE METHOD TO ENHANCE SAFETY AND RELIABILITY FOR MIS
    加强MIS安全可靠性之方法
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    Safety Analyses of Man-raachine-environment System
    人-机-环境系统安全分析
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    Development of a Microcomputer Aided Safety Management System
    微机辅助安全管理系统的开发
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  安全性
    A Study on the Modeling and Analysis Technique of System Safety Analysis Based on Petri Nets
    基于Petri网的系统安全性建模与分析技术研究
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    A Study on the Technique of System Safety Analysis
    系统安全性分析技术研究
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    Study on the Safety Assessment Based on Three Dimensional Intelligent Information System in Slope Engineering
    边坡安全性评估的三维智能信息系统研究
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    Formalizing Type Safety of the Java Virtual Machine
    Java虚拟机安全性的形式化分析和验证
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    SEVERAL METHODS OF DATA INPUT AND THE SAFETY IN THE SOFTWARE ABOUT THE BUDGET ESTIMATE
    几种数据录入方法及安全性在概预算软件中的体现
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  “safety”译为未确定词的双语例句
    Design and Implementation of a Universal Virus Protection and Safety System SYSGUARD
    通用计算机病毒防护软件SYSGUARD的设计与实现
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    Progress in Modeling Studies of Car Airbag Safety System
    汽车防护气囊模型研究进展
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    Meanwhile,the characteristics of the S box and the safety of the modified AES were analyzed,which proves the safety to AES with new S box.
    同时,分析并证明了新S盒不会影响修改后的AES算法的强度。
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    Design of HODOLIC Computer Image System for Auto Monitoring Fire and Safety
    HODOLIC计算机图像监控报警系统的设计
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    Design and Realization of Safety Structure of Distributed Control System
    分布式控制系统防危体系的设计与实现
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  safety
A group of scientists conducted a comprehensive investigation on ecological safety and water and soil erosion in the Northwest Loess Plateau, Northwest China.
      
Therefore, the extension scale of converting cropland to forest could be enlarged properly in the reservoir area, while it should be limited in the non-reservoir area due to the issues of higher population density and food safety.
      
The infrared sensors around the robot improved its safety in avoiding barriers.
      
Frequent natural disasters and man-made catastrophes have threatened the safety of citizens and have attracted much more attention.
      
Disaster prevention, disaster reduction and disaster rescue are the important parts of national public safety.
      
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A scheme of distributed file system, the revision of the UNIX file system, is proposed for a loop network. The principal revisions made include: (1) several catalogs are added to the structure; (2) a series of system calls are arranged; (3) a few "loopholes" in safety of the UNIX file system are mended; (4) an algorithm for keeping the consistency of multicopy files during modification are introduced. The features and functions of the original UNIX file system are retained, and the new scheme is also applicable...

A scheme of distributed file system, the revision of the UNIX file system, is proposed for a loop network. The principal revisions made include: (1) several catalogs are added to the structure; (2) a series of system calls are arranged; (3) a few "loopholes" in safety of the UNIX file system are mended; (4) an algorithm for keeping the consistency of multicopy files during modification are introduced. The features and functions of the original UNIX file system are retained, and the new scheme is also applicable to distributed environment.

本文针对环形网提出了一个分布式文件系统的方案.此方案对UNIX文件系统进行了改造,在文件的结构方面增设了几种目录,以提高文件的查找速度和支持文件的分布;在对文件的操作方面新设计了一系列的系统调用,以实现对分布文件的管理;同时修补了UNIX文件系统在安全方面的几处漏洞;最后提出了一个维护多副本文件在修改时的一致性的算法.此方案既保留了UNIX文件系统原有的特点和功能,又能适应于分布式环境.

To select a suitable time in the timetable of the university is in nature how to find a common free time set of classrooms, teachers and classes. In 1975 Itai and Shamir proved that the timetable problem also is a NP-Complete problem. There had been a lot of heated arguments among many scholars until then. We can divide the timetable problem into two layers to solve. At first we should select a suitable time slice, and then according to the time slice we proceed to schedule the classrooms. But classroom-schedulings...

To select a suitable time in the timetable of the university is in nature how to find a common free time set of classrooms, teachers and classes. In 1975 Itai and Shamir proved that the timetable problem also is a NP-Complete problem. There had been a lot of heated arguments among many scholars until then. We can divide the timetable problem into two layers to solve. At first we should select a suitable time slice, and then according to the time slice we proceed to schedule the classrooms. But classroom-schedulings are greatly different in various universities. Is this paper we will particularly deal with problem about how to select a suitable time-slice according to the safety decision-making principle. When we select a time slice for every course, we must consider the minimum influence upon successive courses. If a teacher will teach two courses which correspond two classes in a semester, when we select the time slice of the first course, we should try our best to select the time slice when the second class already has another course. In such a case when we select the time slice of the second course, the freedom of the selection would not be hindered by the first selection. If a class has two courses taught by two teachers in a semester, we must consider the problem in the similar way. As we select the slice in such a way, the possibility of collision would greatly decrease. Here we present the quantified description of the safety decision-making scheduling algorithm. In order to speed up scheuling process, when we input the course tuples, we put the course tuples with the same teacher and the same class together. We should only scan downward several courses, and then we can make our decision accordingly. Other courses are irrelevant In this paper we draw the algorithm flow-chart. The program has been run in the IBM-PC. It has turned out that to select a suitable time slice is fully probable.

排课表程序中选择合适时间的问题,其本质上是寻找教室、教师和学生班级的公共有空集合,1975年Itai及Shamir证明了课程表问题也是一个NP-完全类问題。从而结束了该问题上很多学者之间的论争。可把排课表问题分成两个层次进行,首先选择合适时间,然后再根据这个时间进行教室调度。而教室调度在各类学校是大不相同的,本文着重讨论了根据安全决策准则来选择合适时间片。其出发点是在为每一门课程选择时间时,要考虑对后续课影响最小,如一位教师一学期讲两门课(相应有两个班级),选第一门课时间时,尽可能选第二门课这个班级在上别的课的时间,这样在选第二门课的时间时,其选择自由度不受第一门课的影响。如一个班级同时接受两位教师讲两门课,其考虑的出发点也同样。这样来选择时间,以后造成冲突的可能性大大减少。本文给出了安全决策调度算法的定量描述,为加快安全决策调度过程,在原始输入课元组时,把相同的教师及相同的班级的课元组放在一起,只要往下扫描几门课。根据这几门课便可进行决策,再以后的课全是无关联的。本文也给出了算法框图。经在IBM-PC机上运行,证明选择合适时间片是完全可行的。

In this paper mathematical model of optimal design for the insulating riserwith fine hollow particles (FHP) has been developed,basing on the laws of theshrinkage cavity proifle and their quantive quations,Optimal risering with FHPis carried out by the mefhod of random seeking for gradient direction, We providethat the principles of the riser design for insulation should be. i) enablingdiectional solidification to be continueus from the casting into the feeder. ii)the feeder's safety height under control...

In this paper mathematical model of optimal design for the insulating riserwith fine hollow particles (FHP) has been developed,basing on the laws of theshrinkage cavity proifle and their quantive quations,Optimal risering with FHPis carried out by the mefhod of random seeking for gradient direction, We providethat the principles of the riser design for insulation should be. i) enablingdiectional solidification to be continueus from the casting into the feeder. ii)the feeder's safety height under control from 25 to 50 millimeters. On thesegrounds a software system of optimal risering with FHP in microcoputer hasbeen built. Contrast experiments in fountry show that the software systemoccupying small memory capacity, has the features of high efficiency, reliablityand low costs. Casting yield can be increased from 70-75% to 80-85% by optimalrisers. It's suitable for various kinds of shapes of carbon steel castngs in sandespecially for small and middle castings.

本文建立了以保温冒口收缩孔腔变化规律及其影响因素的定量关系为基的保温冒口优化设计数学模型,并用随机方向搜索法进行了FHP冒口的优化设计。提出了保温冒口设计准则应为;(i)、创造通向冒口的顺序凝固;(ii)、冒口内的安全高度控制在25~50mm;并据此开发了FHP保温冒口优化设计软件系统。通过现场验证:优化设计的冒口其工艺出品率可从原来的70~75%提高到80~85%;该软件系统占用内存小、使用方便、运行时间短,能在各种低档微型机上应用;它适用于不同钢种、形状、型砂的中小碳钢铸件。

 
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