热轧过程控制系统数据库实时备份与快速恢复

为改善数据库冷备份的缺陷,针对武汉钢铁股份有限公司热轧二分厂过程控制系统数据库特性,利用一台配备双网卡的工作站和Oracle逻辑备份与恢复工具,通过网段切换与数据存储,实现数据库的实时备份与快速恢复,提高了数据安全性,简化了数据恢复过程,为安全生产创造了有利条件。     

Oracle 9i在镀锌线数据备份中的应用

介绍了Oracle 9i数据库的运行方式、备份的分类、备份策略, 企业应根据实际情况选择正确、高效、安全的数据备份.     

PB环境下Iracle数据库的备份与恢复

在分析了Ｏｒａｃｌｅ数据库导出／导入备份与恢复的基础上，实现了ＰＢ下Ｏｒａｃｌｅ数据库的备份与恢复。     

Sybase数据库的备份与恢复

介绍了如何对sybase数据库进行备份与恢复,同时分析了常见的备份数据库服务故障处理方法。     

浅析数据库的备份与恢复策略

从数据库备份的基本理论出发，结合各种应用环境，介绍了当前主流的数据库备份与恢复策略。     

ORACLE数据库的备份和恢复

介绍ORACLE数据库的逻辑备份和物理备份以及不同的恢复方法,并举出一个实际应用的例。     

SYBASE数据库备份及恢复

文章根据实际操作,阐述了基于unix操作系统的SYBASE数据库的备份方法,以及恢复过程.     

浅析开发0RACLE数据库应用软件的连接方式

介绍了目前在开发数据库应用程序时采用的体系架构，并对常用的几种访问Oracle数据库的连接方式进行分析，提出了在应用开发过程中对Oracle数据库帐户信息进行加密使用和对Oracle数据库进行多次连接验证的方法连接数据库，达到增强系统安全性。     

Oracle9i数据库应用程序开发方法

Oracle9i是目前应用最为广泛的大型关系型数据库管理系统,文章介绍了基于OCCI技术的Oracle9i应用程序的建立方法,详细探讨了OCCI开发环境的建立和使用OCCI链接,以及操纵数据库的步骤与方法,给出了关键的源代码.     

ORACLE数据库系统的数据安全策略

通过探讨和理解ORACLE数据库系统的安全管理知识、备份恢复方法，根据其具有的不同特点，做出适合自身管理特点的安全策略。     

Backing up behaviors in teams: The role of personality and legitimacy of need.

In this article, the authors developed several hypotheses regarding both the main and interactive effects of 2 types of team inputs on backing up behaviors in teams: (a) team composition characteristics in terms of the personality of the members of the team and (b) team task characteristics in terms of the extent to which the nature of the task is one that legitimately calls for some members of the team to back up other members of the team. Results from a study of 71 4-person teams performing a computerized tactical decision-making task suggest that the legitimacy of the need for back up has an important main effect on the extent to which team members provide assistance to and receive assistance from each other. In addition, the legitimacy of the need for back up also has important interactive effects with both the personality of the back up recipient and the personality of the back up providers on backing up behaviors in teams. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

胶带运输机胶带的跑偏和调整

系统地阐述了胶带运输机的胶带因滚筒、支承设备、辅助设备上和胶带自身运行导致的胶带跑偏的原因和调整措施。     

十八辊铜箔轧机背衬轴承的维护方法

以十八辊轧机的背衬轴承为研究对象,对背衬轴承使用中产生的问题进行了阐述和分析,对背衬轴承的装配精度和维护进行了研究,提出了背衬轴承修磨新方式,对十八辊轧机辊系的维护具有重要意义.     

板坯连铸机分节式支承导辊的刚度分析

分节式导辊是８０年代出现的连铸机新结构，具有刚性好和能有效控制铸坯鼓变形的特点，已在连铸机辊列设计中得到推广应用。本文中对串心杆式支承导辊的结构及分节数对铸坯鼓肝变形的影响作了分析，从力学机理上证明了采用分节式导辊的合理性。     

Mayo Clinic long-term analysis of the functional durability of the AMS 800 artificial urinary sphincter: a review of 323 cases

PURPOSE: We determine the long-term durability of the AMS 800* artificial urinary sphincter in the correction of severe urinary incontinence, and evaluate mechanical versus nonmechanical failure and reoperation rates before (1983 to 1987) and after (1988 to present) the introduction of the narrow backing occlusive cuff design. MATERIALS AND METHODS: From January 1983 to October 1994 more than 400 patients received an AMS 800 artificial urinary sphincter placed by 1 surgeon and 323, mean age 60.4 years, met study requirements for review. Mean followup was 68.8 months (range 18 to 153). Only patients with a minimum of 18 months of followup were included in the study. Of the 313 men and 10 women in the study group sphincters were placed at the urethra in 272 and at the bladder neck in 51. All patients were followed from surgery to the date of sphincter failure. Etiology of the failures was recorded and divided into mechanical versus nonmechanical sphincters placed before and after the introduction of the narrow backing cuff. RESULTS: Overall, 58 of the 139 patients (42%) in the pre-narrow backing cuff group versus 31 of the 184 (17%) in the narrow backing cuff group required a first reoperation. Mechanical failure occurred in 29 cases (21%) with the pre-narrow backing and 14 (7.6%) with the narrow backing cuff. Nonmechanical failure developed in 24 cases (17%) with the pre-narrow backing and 17 (9%) with the narrow backing cuff. Ultimately 437 operations were required in the 323 patients, of whom 234 (72%) required no further surgical intervention at a mean followup of 68.8 months. CONCLUSIONS: Technological advances in the design and construction of the AMS 800 have dramatically decreased the reoperation and failure rates. These advances and improved surgical techniques provide an excellent long-term solution and increased continence in correctly selected patients with urinary incontinence.     

全湿法转炉煤气回收净化系统设计改进

通过对全湿法转炉煤气回收净化系统除尘效率影响因素的分析 ,提出了合理设计喷嘴、使用重力除尘器的改造设计方案 ,可使整个系统除尘效率、脱水效率得到提高。分析认为回收的煤气含尘量可小于 10 0mg/m3。部分设计项目改造后吨钢回收煤气由 3 0m3提高到 75m3,年产钢 2 2 0万t ,年创利润可达 13 3万元     

残留矿块的回收利用技术

分析比较了残留矿块的非常规回采方法 ,残留矿块的开采弥补了井下矿量的不足 ,节约了大量井下的开拓、采切费用     

无缝钢管回退式芯棒二辊连轧特性分析

利用有限元软件MSC.Superform对回退式芯棒钢管连轧过程进行数值模拟,探究回退式芯棒二辊连轧钢管的金属变形、力能参数及运动学特点。结果表明:与全浮动芯棒相比,回退式芯棒轧制时金属横向流动较小,降低了孔型开口处金属过充倾向;钢管平均壁厚偏薄,促进了钢管减壁,但可能会造成壁厚收缩;轧制力有一定的降低。与限动式芯棒相比,芯棒轴向力较大,钢管易发生抱棒。     

P510树脂在氯化体系中用树脂矿浆法回收金的工艺条件试验研究

试验研究了P510树脂对某含金硫精矿焙砂在氯化体系中用树脂矿浆法提金的工艺条件。在最佳试验条件下,金的浸出吸附率可达96％以上。     

离子交换技术在铼回收过程中的应用

归纳了用离子交换法从溶液中回收铼的基础研究成果，介绍了有关工艺，并对今后努力方向提出了作者的看法。