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检索条件"主题词=Object oriented modeling"

共 13662 条记录，以下是91-100 订阅

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An object-oriented modeling Method for Algebraic Specifications in CafeOBJ

An Object-Oriented Modeling Method for Algebraic Specificati...

引用

International Conference on Software Engineering (ICSE)

作者： S. Nakajima K. Futatsugi C&C Research Laboratories NEC Corporation Limited Kawasaki Japan Graduate School of Infomation Science Japan Advanced Institute of Science and Technology Ishikawa Japan

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OmSim/spl minus/an integrated interactive environment for object-oriented modeling and simulation

OmSim/spl minus/an integrated interactive environment for ob...

引用

IEEE International Symposium on Computer Aided Control System Design (CACSD)

作者： M. Andersson D. Bruck S.E. Mattsson T. Schonthal Department of Automatic Control Lund Institute of Technology Lund Sweden

The new integrated and interactive environment OmSim, for modeling and simulation of dynamical systems, is introduced. OmSim uses the object-oriented modeling language Omola. The use of OmSim is illustrated by a practical example. The architecture of OmSim is presented and related to a reference model for open architectures for computer aided control engineering.< >

关键词： object oriented modeling Libraries Computational modeling Computer architecture Control engineering computing Control engineering Equations Power system modeling Computer simulation Hierarchical systems

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An Evaluation of Diagnosis in a Learning Environment for object-oriented modeling

An Evaluation of Diagnosis in a Learning Environment for Obj...

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International Conference on Advanced Learning Technologies (ICALT)

作者： Ludovic Auxepaules Dominique Py Laboratoire dE28099Informatique Université du Maine Le Mans France

This paper reports the first evaluation of a diagnostic module, called ACDC (Automatic Class Diagrams Comparator) since its integration into Diagram, a learning environment for UML class diagrams. ACDC is an hybrid matcher that compares the student diagram with a reference diagram and tries to match them. It produces a list of structural and content differences between these two diagrams. These differences are then analysed by the pedagogical component of Diagram for producing appropriate feedbacks. The evaluation of ACDC system was conducted using diagnosis traces and student diagrams collected in a Diagram experimentation during Fall 2008 with students in a UML course. For evaluating the quality of ACDC, we use four match quality measures: Precision, Recall, F-Measure and Overall. The evaluation results show that the diagnosis are fairly well but requires to be improved in some specific situations.

关键词： Unified modeling language Pattern matching Computational modeling object oriented modeling Artificial intelligence Semantics Context

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object-oriented modeling and Simulation of AC/DC Systems

Object-Oriented Modeling and Simulation of AC/DC Systems

引用

IEEE General Meeting Power& Energy Society

作者： Karl Schoder Ali Feliachi Advanced Power and Electricity Research Center West Virginia University Morgantown WV USA

This paper summarizes the experience gained while using the object-oriented language Modelica for modeling an AC/DC electric distribution system: the Naval electric shipboard power generation and DC distribution testbed. Modelica's hybrid system modeling capabilities allow efficient formulation of continuous and discrete information processing systems and these have been used to map the power system's components to objects in Modelica. The language clearly shows its advantages in the design phase, as domain knowledge can be directly incorporated into the basic and well-defined components. The limiting factor of using this approach could be the large set of algebraic-differential equations handled at event detection that would slow down the simulation.

关键词： object oriented modeling Power system modeling Mathematical model Power generation DC generators Equations AC generators Power electronics Libraries Hybrid power systems

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Software design and implementation using the Real-Time object-oriented modeling Language

Software design and implementation using the Real-Time Objec...

引用

Canadian Conference on Electrical and Computer Engineering (CCECE)

作者： B. McCormick Computing Devices Canada Calgary AB Canada

The Real-Time object-oriented modeling (ROOM) language (Selic et al., 1994) is of growing interest in the software engineering field because a ROOM toolset, objectime (R), is now available. This toolset allows developers to create a graphic representation of the design of a system on a workstation and to then execute a discrete event simulation of the system. ROOM is promoted as a method ideally suited to the design of systems with one or more of the characteristics of timeliness, dynamic internal structure, reactiveness, concurrency and distribution. Computing Devices Canada has used the ROOM language to implement a telephone subsystem and a radio access subsystem as part of the MESHnet product line. Both subsystems exhibit four of the above characteristics. This paper describes our experiences using ROOM for these applications.

关键词： Software design object oriented modeling Telephony Fires Military computing Graphics Workstations Discrete event simulation Concurrent computing Real time systems

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The Robotics API: An object-oriented framework for modeling industrial robotics applications

The Robotics API: An object-oriented framework for modeling ...

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2010 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Andreas Angerer Alwin Hoffmann Andreas Schierl Michael Vistein Wolfgang Reif Institute for Software and Systems Engineering University of Augsburg Augsburg Germany

During the last two decades, software development has evolved continuously into an engineering discipline with systematic use of methods and tools to model and implement software. For example, object-oriented analysis and design is structuring software models according to real-life objects of the problem domain and their relations. However, the industrial robotics domain is still dominated by old-style, imperative robot programming languages, making software development difficult and expensive. For this reason, we introduce the object-oriented Robotics Application Programming Interface (Robotics API) for developing software for industrial robotic applications. The Robotics API offers an abstract, extensible domain model and provides common functionality, which can be easily used by application developers. The advantages of the Robotics API are illustrated with an application example.

关键词： Welding Service robots object oriented modeling Real time systems Robot control Programming

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object-oriented modeling and simulation of power systems using Modelica

Object-oriented modeling and simulation of power systems usi...

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IEEE Winter Meeting Power Engineering Society

作者： I.R. Navarro M. Larsson G. Olsson E. T. S .I.I Cartagena Murcia University Spain Department of Industrial Automation Lund University Sweden

Traditionally the simulation of transient and voltage stability in power systems has been constrained to tools developed specifically for this purpose, e.g. Simpow, PSS/E, ETMSP and Eurostag. While being efficient and thereby able to simulate large systems, their component models are often encapsulated and difficult or impossible to examine and modify. Also, these simulators often require substantial training and are therefore unsuitable for normal classroom use. For academic and educational use, it is more important that the component modeling is transparent and flexible, and that the students can quickly get started with their simulations. This paper describes a freely available power system library called objectStab intended for voltage and transient stability analysis and simulation written in Modelica, a general-purpose object-oriented modeling language. All component models are transparent and can easily be modified or extended. Power system topology and parameter data are entered in one-line diagram form using a graphical editor. The component library has been validated using comparative simulations with Eurostag.

关键词： object oriented modeling Power system modeling Power system simulation Power system transients Power system stability Voltage Power system analysis computing Libraries Transient analysis Stability analysis

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Modelica Based object-oriented modeling and PD-Computed Torque Control of a 2-DOF Robotic Arm

Modelica Based Object-Oriented Modeling and PD-Computed Torq...

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International Conference on Promising Electronic Technologies (ICPET)

作者： Mahmoud M. Al Ashi Hatem Elaydi Iyad Abu Hadrous Electrical Engineering Department Illinois Institute of Technology Chicago IL USA

In this paper, an object-oriented model was developed using Modelica for a 2-DOF robotic arm. The model was validated through testing the performance of a PD computed-torque disturbance rejection method to handle the trajectory tracking control of the robotic arm. The simulation results obtained in Dymola proved the validity of the developed model and showed the effectiveness of the designed PD-computed torque controller in enhancing the trajectory tracking performance of the robotic arm.

关键词： Mathematical model object oriented modeling Manipulators Computational modeling Torque Robot kinematics

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An object-oriented modeling approach based on entity-relationship diagrams and Petri nets

An object-oriented modeling approach based on entity-relatio...

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IEEE International Conference on Systems, Man and Cybernetics

作者： A. Boccalatte D. Giglio M. Paolucci Department of Communications Computer and Systems Science University of Genoa Genoa Italy

Information systems (ISs) development process is usually characterized by several phases, among which a critical role is played by conceptual and logical design. To model static information structures, entity-relationship (ER) diagrams are probably the widespread formalism. To represent dynamic information, Petri nets are a flexible formalism as they are able to model processes from an aggregate point of view to a very detailed one. The purpose of this work is to try to integrate these two different formalisms in order to allow an automatic translation of conceptual models of process into a relational structure. Then, the functionality of an RDBMS could be extended by including in the relational database also a representation of dynamic information, and allowing the RDBMS to directly control the process execution.

关键词： object oriented modeling Petri nets Erbium Computer aided software engineering Relational databases Information systems Aggregates Automatic control Process control Management information systems

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A Diagnosis Method that Matches Class Diagrams in a Learning Environment for object-oriented modeling

A Diagnosis Method that Matches Class Diagrams in a Learning...

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International Conference on Advanced Learning Technologies (ICALT)

作者： Ludovic Auxepaules Dominique Py Thierry Lemeunier LIUM Universite du Maine Le Mans France

ISBN: (纸本)9780769531670

This paper describes the diagnostic method developed in a learning environment for object-oriented modeling called Diagram. This method compares the studentpsilas diagram with an expertpsilas diagram in order to find the differences between these two diagrams. The principles of our algorithm rely on graph matching methods and algorithms. The diagrams are schematized in characteristic structural patterns. These structures are compared by using similarity functions, and similarity scores are computed for each couple of structures. Finally, univalent and multivalent matches are qualified, according to a taxonomy of differences. An example is given on a real studentpsilas diagram. The algorithm is implemented in Java under Eclipse environment. It has been tested on several problems of increasing complexity, with students diagrams collected in real class situation. The results of the off-line experimentations are presented and discussed.

关键词： object oriented modeling Taxonomy Feedback Unified modeling language Pattern matching Java Testing Design methodology Clustering algorithms

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