图书馆协同构建农业科研系统信息库的研究

在阐述农业科研系统信息库的概念和特点的基础上,详细介绍了图书馆协同构建农业科研系统信息库的内涵及意义,分析了影响信息库构建的环境因素,提出了信息库构建的目标和评价指标,以及农业科研系统信息库的结构和功能,最后从加强农业图书馆的信息资源建设,创造畅通和谐的联盟环境和提升创新和服务能力3个方面提出了加快图书馆协同构建农业科研系统信息库的途径。

Hadoop集群性能参数自动调优信息库系统构建

为了使Hadoop集群系统能够应对多变的任务及系统本身节点差异对集群性能带来的影响,采用TaskConfigure服务器构建Hadoop集群参数信息库系统实现对集群参数的自动调优配置.通过对集群节点及任务的分类,提出集群按类分配配置参数及采用节点资源利用效率生成集群系统参数的优化配置值.实验结果表明,参数信息库系统的自动调优保证了集群工作性能的充分发挥,有效地缩短了集群执行任务的工作时间,使集群具有良好的稳定性和扩展性.

信息库还是情报库?--实践视域中的竞争情报系统构建

结合为企业开发竞争情报系统过程中遇到的问题和挑战,分析当前学界和商界在竞争情报系统构建过程中对信息库与情报库混用的现状,提出以信息库为基础,知识库、情报库为目标的信息收集、信息处理分析及情报服务三级竞争情报系统架构,并结合民用飞机客户服务行业,对系统构建作以实验性研究。

在Internet网上建立实验动物资源信息库系统的研究

基于Internet的实验动物资源信息库应用 ,本文主要介绍了如何利用B/S技术、ADO技术与ASP技术相结合 ,建立既有搜索引擎 ,又有电子商务功能的B/S结构的动物实验资源信息库 ,利用Internet发布科技信息 ,提供网上服务。

核桃品种资源及栽培信息库系统的设计与实现

为对核桃品种资源和栽培信息进行有效管理,采用Visual Studio 2010中的C语言,以及SQLite数据库构建了核桃品种资源及栽培信息库系统。系统主要包括品种信息管理、栽培技术、病虫害监测、采收及采后管理和系统维护5个功能模板。系统的应用,为云南乃至中国核桃种质资源收集和保护提供信息平台,也为核桃种质资源评价提供基础数据支撑。

法律信息库系统

本文分析了法律数据库的结构和特点，介绍了采用面向对象设计方法和超文本数据库技术开发和实现法律信息库系统将作为重要网络资源之一为不同用户进行法律咨询服务。

基于云存储技术的电子档案信息库系统设计

目前的电子档案信息库系统储存能力较弱,信息采集过程稳定性较差,导致难以在短时间内存储规定数据。为此基于云存储技术设计了一种新的电子档案信息库系统,在电子档案信息存储器中内置一个78YHF密码芯片,提高信息的安全性。利用云计算技术,结合信息加密、档案调出、档案录入、档案存储等操作完成软件设计。实验结果表明,基于云存储技术的电子档案信息库系统信息采集过程稳定性更好,能够在短时间内存储规定数据。

档案信息库系统的智能检索

本文根据各类档案信息库系统的特点和检索子系统的设计实践经验,阐述了一个智能化、高速检索子系统(IRS)所遵循的设计原则和设计方法.

工业企业信息库管理系统

企业信息库管理系统的目的是为企业实现现代化、信息化服务。凡是纳入本系统的企业,都可以从系统数据库中提取本企业的有关数据,以及其他行业中各企业的基本信息及主要产品,掌握市场动态,为制定企业战略决策、发展规模、调整产品结构等提供科学依据。它具有方便、准确、高效、快捷等特点。

分布式环境下广西体育资源信息库系统的实现

应用动态IP中转及分页检索技术 。

The Preliminary Design and Implement of Plant Digital Information Retrieval System

[Objective] The aim was to set up a plant digital information retrieval system.[Method] Plant digital information retrieval system was designed by combining with Microsoft Visual Basic 6.0 Enterprise Edition database management system and Structure Query Language.[Result] The system realized electronic management and retrieval of local plant information.The key words of retrieval included family,genus,formal name,Chinese name,Latin,morphological characteristics,habitat,collection people,collection places,and protect class and so on.[Conclusion] It provided reference for these problems of species identification and digital management of herbarium.

SYSTEM FOR AUTOMATIC GENERALIZATION OF TOPOGRAPHIC MAPS

With the construction of spatial data infi＇astructure, automated topographic map generalization becomes an indispensable component in the community of cartography and geographic information science. This paper describes a topographic map generalization system recently developed by the authors. The system has the following characteristics： 1） taking advantage of three levels of automation, i.e. fully automated generalization, batch generalization, and interactive generalization, to undertake two types of processes, i.e. intelligent inference process and repetitive operation process in generalization; 2） making use of two kinds of sources for generalizing rule library, i.e. written specifications and cartographers＇ experiences, to define a six-element structure to describe the rules; 3） employing a hierarchical structure for map databases, logically and physically; 4） employing a grid indexing technique and undo/redo operation to improve database retrieval and object generalization efficiency. Two examples of topographic map generalization are given to demonstrate the system. It reveals that the system works well. In fact, this system has been used for a number of projects and it has been found that a great improvement in efficiency compared with traditional map general- ization process can be achieved.

A GIS-BASED GLACIER INVENTORY FOR THE ANTARCTIC PENINSULA AND THE SOUTH SHETLAND ISLANDS——A FIRST CASE STUDY ON KING GEORGE ISLAND

The aim of the international project “Global Land Ice Measurements from Space (GLIMS)" headed by the US Geological Survey is to establish a world wide glacier inventory based on satellite imagery.This data set will form a first digital baseline study for future glacier monitoring.The presented GIS_based glacier inventory for King George Island is a case study for the area of the Antarctic Peninsula.In the database of the glacier inventory topographic information,specific glaciological parameters as well as metadata will be included.The topographic data consists of drainage basin limits,basin areas,altitudinal ranges,perimeters and mean lengths.Glaciological data sets should comprise information on glacier retreat in different periods,glacier velocities,ice thickness and bedrock topography as well as derived parameters.Modelled and measured mass balance parameters could be included as additional data layers.In particular,these metadata records must comprise background information on data accuracy and data sources and should be compatible with a future data model for the King George Island GIS (KGIS).Three examples illustrate that the GLIMS database will not only contain information valuable for glaciological applications,but also other environmental studies on the island will benefit from this standardised remote sensing data sets.Therefore,a very close link between the data models of KGIS and GLIMS has to be established to enable these synergisms.Finally,better access to historic aerial photography would enable a continuous record of glacier retreat from the beginning of the 1950’s onward.

Dynamic assessment of rainfall-induced shallow landslide hazard

The assessment of rainfall-induced shallow landslide hazards is a significant issue in the Three Gorges Reservoir area in China due to the rapid development of land in the past two decades. In this study, a probabilistic analysis method that combines TRIGRS and the point-estimate method for evaluating the hazards of shallow landslides have been proposed under the condition of rainfall over a large area. TRIGRS provides the transient infiltration model to analyze the pore water pressure during a rainfall. The point-estimate method is used to analyze the uncertainty of the soil parameters, which is performed in the geographic information system(GIS). In this paper, we use this method to evaluate the hazards of shallow landslides in Badong County,Three Gorges Reservoir, under two different types of rainfall intensity, and the results are compared with the field investigation. The results showed that the distribution of the hazard map is consistent with the observed landslides. To some extent, the distributionof the hazard map reflects the spatial and temporal distribution of the shallow landslide caused by rainfall.

Event-based incremental updating of spatio-temporal database

Based on the relationship among the geographic events, spatial changes and the database operations, a new automatic (semi-automatic) incremental updating approach of spatio-temporal database (STDB) named as (event-based) incremental updating (E-BIU) is proposed in this paper. At first, the relationship among the events, spatial changes and the database operations is analyzed, then a total architecture of E-BIU implementation is designed, which includes an event queue, three managers and two sets of rules, each component is presented in detail. The process of the E-BIU of master STDB is described successively. An example of building’s incremental updating is given to illustrate this approach at the end. The result shows that E-BIU is an efficient automatic updating approach for master STDB.

Design and Applications of Land Resources and Ecological Environment Information System: A Case Study of Zigui County in the Three Gorges Area of China

The design and applications of a land information system built upon ARC/INFO and ArcView are presented. The proposed system not only maintains all the advantages of the more conventional implementations but also enhances them in the following ways: 1) the application program interfaces (API) are used to transmit data and messages among different parts of the system; 2) the integrated system can support studies on land evaluations and ecological analyses by efficient management of attribute and spatial data and 3) correspondingly, spatial records and attributive records are linked by the same identifiers (ID). A case study application in Zigui County of the Three Gorges Area in China demonstrates that the system could employ land-use maps and land property data to predicate and analyze the land utilization changes in the past, present and future. The ecological environment analysis can be carried out with the data of land, economics and terrain map used, showing that the system can be widely applied, especially to survey land and environment resources in the countryside area.

Reservoir Inflow Estimation Using Remote Sensing, GIS and Geosimulation

RS （remote sensing） applications to hydrological problem solving have successfully transitioned from being experimental to operational in the last couple of years, and information gathered through these technologies can facilitate water resource procedures. Patterns from RS imagery can be translated into a deterministic distribution of input data over a wide area on a pixel-by-pixel basis. This paper presents the implementation of different methodologies of integrating satellite-derived information from RS, and GIS （geographic information system） visualization and simulation capabilities in improving hydrologic estimation processes.

Research and Application of Information Technology in Mining Area Railway

This paper introduces the methods and technicalities of applicating information technology in a mining area railway transport system. The pattern Client /Server is adopted in this system. There are two types of clients, i.e. PC and terminal. This article focuses on the system demand analysis, the data flow, the system architecture and some technical details.

Landslide Susceptibility Assessment of the Youfang Catchment using Logistic Regression

A detailed landslide susceptibility map was produced in the Youfang catchment using logistic regression method with datasets developed for a geographic information system(GIS).Known as one of the most landslide-prone areas in China, the Youfang catchment of Longnan mountain region,which lies in the transitional area among QinghaiTibet Plateau, loess Plateau and Sichuan Basin, was selected as a representative case to evaluate the frequency and distribution of landslides.Statistical relationships for landslide susceptibility assessment were developed using landslide and landslide causative factor databases.Logistic regression(LR)was used to create the landslide susceptibility maps based on a series of available data sources: landslide inventory; distance to drainage systems, faults and roads; slope angle and aspect; topographic elevation and topographical wetness index, and land use.The quality of the landslide susceptibility map produced in this paper was validated and the result can be used fordesigning protective and mitigation measures against landslide hazards.The landslide susceptibility map is expected to provide a fundamental tool for landslide hazards assessment and risk management in the Youfang catchment.