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object-oriented land cover classification using HJ-1 remote sensing imagery

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Science China Earth Sciences 2010年第S1期53卷 34-44页

作者： SUN ZhongPing1,SHEN WenMing1,WEI Bin1,LIU XiaoMan1,SU Wei2,ZHANG Chao2 & YANG JianYu2 1 Satellite Environment Center,Ministry of Environmental Protection,Beijing 100094,China 2 College of Information and Electrical Engineering,China Agricultural University,Beijing 100083,China 1. Satellite Environment Center Ministry of Environmental Protection Beijing 100094 China2. College of Information and Electrical Engineering China Agricultural University Beijing 100083 China

The object-oriented information extraction technique was used to improve classification accuracy,and addressed the problem that HJ-1 CCD remote sensing images have only four spectral bands with moderate spatial *** used two key techniques:the selection of optimum image segmentation scale and the development of an appropriate object-oriented information extraction *** the principle of minimizing merge cost of merging neighboring pixels/objects,we used spatial autocorrelation index Moran's I and the variance index to select the optimum segmentation *** Nearest Neighborhood(NN) classifier based on sampling and a knowledge-based fuzzy classifier were used in the object-oriented information extraction *** this classification step,feature optimization was used to improve information extraction accuracy using reduced data *** two techniques were applied to land cover information extraction for Shanghai city using a HJ-1 CCD *** indicate that the information extraction accuracy of the object-oriented method was much higher than that of the pixel-based method.

关键词： HJ-1 remote sensing imagery object-oriented optimum scale of image segmentation Nearest Neighborhood(NN) classification fuzzy classification

Analysis and Design of Soils and Terrain Digital Database (SOTER) Management System Based on object-oriented Method

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Pedosphere 2003年第2期13卷 111-120页

作者： ZHANGHAITAO ZHOUYONG R.V.BIRNIE A.SIBBALD RENYI MinistryofAgricultureKeyLaboratoryofSubtropicalSoilResourcesandEnvironment HuazhongAgriculturalUniversityWuhan430070(China) MacaulayLandUseResearchInsstitute CraigiebucklerAberdeenAB158QH(UK)

A SOTER management system was developed by analyzing, designing, programming, testing, repeated proceeding and progressing based on the object-oriented method. The function of the attribute database management is inherited and expanded in the new system. The integrity and security of the SOTER database are enhanced. The attribute database management, the spatial database management and the model base are integrated into SOTER based on the component object model (COM), and the graphical user interface (GUI) for Windows is used to interact with clients, thus being easy to create and maintain the SOTER, and convenient to promote the quantification and automation of soil information application.

关键词： component object model database model object-oriented SOTER

OOMMS:A Module Management System Based on an object-oriented Model

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Journal of Computer Science & Technology 1993年第2期8卷 172-181页

作者：庞民治张永光胥虹丁杰 Institute of Software Academia SinicaBeijing 100080 Institute of Software Academia SinicaBerijing 100080

This paper describes the design rationale of OOMMS,a module management system based on an object-oriented *** concepts of object and module are *** refer to the software products in general which have interface parts and body *** concepts of a cluster of modules,versions of a module,and revisions of a version are also *** tools for checking in C program modules into OOMMS are discussed.

关键词： Module object-oriented module management system version revision

object-oriented Modular Model Library for Distillation

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Chinese Journal of Chemical Engineering 2013年第6期21卷 600-610页

作者： CHEN Chang DING Jianwan CHEN Liping CAD Center Huazhong University of Science and Technology Wuhan 430074 China

For modeling and simulation of distillation process, there are lots of special purpose simulators along with their model libraries, such as Aspen Plus and HYSYS. However, the models in these tools lack of flexibility and are not open to the end-user. Models developed in one tool can not be conveniently used in others because of the barriers among these simulators. In order to solve those problems, a flexible and extensible distillation system model library is constructed in this study, based on the Modelica and Modelica-supported platform MWorks, by the object-oriented technology and level progressive modeling strategy. It supports the reuse of knowledge on different granularities： physical phenomenon, unit model and system model. It is also an interface-friendly, accurate, fast PC-based and easily reusable simulation tool, which enables end-user to customize and extend the framework to add new functionality or adapt the simulation behavior as required. It also allows new models to be composed programmatically or graphically to form more complex models by invoking the existing components. A conventional air distillation column model is built and calculated using the library, and the results agree well with that simulated in Anen Plus.

关键词： distillation system object-oriented Modelica/MWorks level progressive model reuse

An in-depth investigation into the relationships between structural metrics and unit testability in object-oriented systems

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Science China(Information Sciences) 2012年第12期55卷 2800-2815页

作者： LEUNG Hareton Department of Computing Hong Kong Polytechnic University

There is a common belief that structural properties of classes are important factors to determine their unit ***,few empirical studies have been conducted to examine the actual impact of structural properties of *** this paper,we employ multiple linear regression(MLR) and partial least square regression(PLSR) to investigate the relationships between the metrics measuring structural properties and unit testability of a *** investigated structural metrics cover five property dimensions,including size,cohesion,coupling,inheritance,and *** results from open-source software systems show that:(1) most structural metrics are statistically related to unit testability in an expected direction,among which size,complexity,and coupling metrics are the most important predictors;that(2) multivariate regression models based on structural metrics cannot accurately predict unit testability of classes,although they are better able to rank unit testability of classes;that(3) the transition from MLR to PLSR could significantly improve the ability to rank unit testability of classes but cannot improve the ability to predict the unit testing effort of classes.

关键词： testability metrics object-oriented testing effort unit testing prediction

object-oriented GIS technology and mine geo-dynamic division information management

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中国有色金属学会会刊：英文版 2005年第S1期15卷 42-44页

作者： LI Sheng, FENG Fu, XU Xue-feng (Liaoning Technical University, Fuxin 123000, China)

object-oriented methodology was expected to revolutionize GIS design and development, making it easier and faster to design, through a common approach to conceptual modelling, database design, programming languages and user interface tools. In addition, an object-oriented model provides some useful tools for data abstraction and data structuring, which augment the conventional tools and overcome some deficiencies inherent to the traditional relational model. The principles of object-oriented modelling applied to geographic data were put forward, and the concepts of object-oriented paradigm and characteristics of spatial data management were proposed in order to argument their compatibility.

关键词： object-oriented GIS geo-dynamic division

Applying object-oriented Simulation to the Development of FMS Control Software

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High Technology Letters 1995年第2期1卷 20-24页

作者：吴祚宝 National CIMS Engineering Research Center Tsinghua University Beijing 100084 P. R. China

The approach of control software development based on simulation is discussed. A library of object classes for a flexible manufacturing system(FMS) simulation has been developed using the technology of object-oriented programming. Using the library, the simulation software of a FMS which has the same manufacturing logic with the FMS control system can be easily constructed. A new approach in the development of FMS control software based on software reuse and an emulator of the blade FMS control system for testing control software have also been developed.

关键词： FMS Simulation Control object-oriented Programming

Development of E-Mart Based on object-oriented Databases (OODB)

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Journal of Donghua University(English Edition) 2002年第2期19卷 112-116页

作者：孙莉汪立刘皓霜 College of Information Science and Technology Dong Hua University Shanghai 200051

Focusing on the development of electronic-mart (e-mart) based on object-oriented databases (OODB), the concepts of integrated electronic-commerce (e-commerce) environment and e-mart are introduced, and the basic characteristics of OODB Jasmine are described. In addition, the database mode and hierarchy of e-mart are discussed in detail.

关键词： Internet, e-commerce , e-mart, object-oriented database (OODB)

Application of object-oriented Petri Net （OOPN） Model in Fault Rehearsal of Aircraft Independent Electrical Power System

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Application of Object-oriented Petri Net （OOPN） Model in F...