存储管理系统

The design proposal and corelation technique for developing the Deposit Database Management System based on volume visualization technique were diseussed.

讨论了基于体视化技术的矿床数据库管理信息系统的设计思想及实现技术。该系统是一个集图形数据管理、属性数据管理和空间数据分析为一体的管理信息系统。它利用八叉树数据结构实现了数据的压缩存储；结合了传统的MIS技术和GIS技术，实现了图形和数据的有机结合

Today ECM includes the areas of capture (entry, indication, classification), manage (with components like records management, workflow, collaboration, traditional document management and web content management), deliver, store (dynamic storage with the necessary services, databases and storage systems) and preserve (archiving with the corresponding storage technologies).

今天，包括电子对抗措施等领域的捕获，管理（与功能部件，例如记录管理，工作流，协作，传统的文件管理和网络内容管理），提供，存储（动态存储与必要的服务，数据库和存储系统）和维护。

Key management is the core problem of network system security, which deals with the correlative problems from key being generated to ultimately destroyed; it includes system initialization, key generation, key encasement, key distribution, key storage, key renovation, key destruction, etc. Thereinto key distribution and key storage are the two most intractable taches of key management.

密钥管理问题是网络系统安全中首要的核心问题，它是处理密钥自产生到最终销毁的整个过程中的有关问题，包括系统的初始化，密钥的产生、装入、分配、存储、更新、吊销和销毁等内容，而密钥的分配和存储是密钥管理中最为棘手的两个环节。

Through the comparative analysis of irrigation management information systems based on relation database technologies and GIS technologies, we found that the latter has the merits such as integration of graphic data and attribution data, visualization of data and display of further characters using attribution data. The traditional relation-based database, which is good at storing and managing attribution data, is not able to describe and manage those data.

1通过对基于关系型数据库技术支持的灌区管理信息系统与基于GIS技术支持的灌区管理信息系统的比较与分析发现：基于GIS技术支持的灌区管理信息系统具有图形数据属性数据一体化、不仅可以用图形把数据直观地表现，还可以用属性数据表述其更加详尽的特征等优点，而传统的以存储、管理属性数据见长的关系型数据库用来描述和管理这些数据难免感到力不从心。

Graphic data entry can be achieved in the development of personnel management system is the need to talk about the staff picture information is stored in a database.

详细说明：可实现图文数据录入，在开发人事管理系统是，需要讲员工的图片信息存储在数据库中。

This paper designs and implements a virtual storage system named ASD(Allocate-on-demand Storage Device) to solve the problems,which uses the allocate-on-demand policy to relieve the problem of underutilization of storage resource,and uses the dynamic mapping mechanism to manage storage resource in accordance with the access char...

采用写时分配策略解决存储资源利用率低的问题，采用地址动态映射机制实现按照数据特性管理存储资源。测试表明，与静态管理方式相比，以ASD为基础的ext2文件系统的资源利用率和读写性能有明显改善。

Limited by traditional database technology, the spatial data and attribute data were stored dividually. With the transfermation of GIS application to the Distributed Management System, concurrency control, data sharing and network communication become the new problems.

受以往数据库的限制，空间数据和属性数据是分开存储的，随着GIS应用向分布式管理系统领域的转移，在数据共享、网络通信、并发控制等方面出现了许多难以解决的问题。

The appraisal and the finding of current mill condition , the forecasting of conditiontrend ,fault diagnosis 、maintenance strategy arithmetic and decision-making deducingprocess.To enhance software function of equipment management information system, mill condition-based maintenance software aided system is developed,it can save mill condition data into equipment information management platform,through mill software module to analysis sequenced detection data and automaticly give the appraisal of current mill condition , the forecasting of condition trend ,fault diagnosis,maintenance strategy and decision-making suggestion for mill technician as a reference to decide whether tostart mill condition-based maintenance.

在燃煤电厂既有的设备点检和大小修管理信息系统软件平台的基础上，进一步开发磨煤机的状态检修软件支持系统模块，能存储磨煤机的状态点检数据入设备信息管理平台，通过磨煤机状态检修软件支持系统模块对一段时间内的磨煤机点检数据进行处理从而给出磨煤机当前状态的分析与评价，磨煤机状态趋势的预测，磨煤机的故障分析、故障原因查找和解决措施，将最终的维修决策建议提供给磨煤机的专业技术维修人员和管理决策者参考，结合软件分析和人工经验的干预以决定是否开始磨煤机的状态检修。

Electronic map of MapInfo is introduced into the environment of object oriented by the use of Map X 4.0 module. The operations such as dynamic add, delete and edit of objects can be done real-time dynamically by operators in the environment of object oriented on the present diagram of polder region. At the same time, the spatial-data and attribute-data of irrigation district are managed separately. The spatial-data is used by the file system, whereas, the attribute-data exist in the relevent database. The figures and database are related through the only ID number in order to realize two-way inquiry, so that, the polder region river system planning data are collected automatically. Moreover, this system make the great use of GIS advantage in storing and annalising data to automatically organize files needed in river network calculation , adopt one-dimensional unsteady flow model , so as to lay out height of river levee .

把GIS技术引入水系规划，通过MapX4.0组件把MapInfo电子地图调入面向对象编程环境，使操作人员能在面向对象环境中对圩区现状图进行实时动态操作，包括对操作对象的动态添加、动态删除、编辑等；同时，将空间数据和属性数据分开进行管理，空间数据用文件系统管理，属性数据采用数据库管理，通过建立唯一ID号进行数据联接，将图形与数据库进行关联，实现属性到图形或图形到属性的双向查询，从而实现了圩区水系规划部分数据的自动采集；另外，本系统充分利用GIS存储与分析数据的功能，自动生成河网水力计算所需的文件，采用一维非恒定流模型进行河网水力计算，为确定沟道堤顶高程提供依据。

Busparallel expansion and pipeline technique are adopted to improve the average inputand output speed of recorder based on FLASH memory. 2 A concept of 'cluster' isintroduced. The using state message of each cluster is loaded in the spare area,following the target datum, to keep the pipeline sequence of multiple clusters' loading, which guarantee the average input speed of system. 3 Based on the using statemessage of every cluster, the Cluster Allocation Table established in memory enablethe system to manage the recorder flexibly in high speed, similar to a file managementsystem. 4 PowerPC 8245 based embedded system, along with Vxworks real-timeoperating system is introduced to make the system more easier to be applied to theprojects in the future.

本文所述的关键技术特点主要包括：采用了并行扩展以及流水线操作技术以提高基于FLASH芯片的存储区平均输入输出能力；引入了&簇&的概念，为了保证连续写入过程中的流水线顺序，系统向存储区加载每一簇有效数据后，紧接着还将向相应簇的空余区中加载该簇的使用状态信息；根据所有簇的使用状态信息在系统内存中建立&簇分配表&，可以支持系统快速灵活地管理存储区，即，类文件化的数据管理；采用基于PowerPC8245的嵌入式计算机硬件系统及基于Vxworks的嵌入式实时操作系统，提高了系统的整体性能及系统研发的延续性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。