At the end of the 20th century and the beginning of the 21 th , ontologies have emerged as an important and increasing interest research area in a variety of academic setting. Strides in information technology and i...
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(纸本)9780769530383
At the end of the 20th century and the beginning of the 21 th , ontologies have emerged as an important and increasing interest research area in a variety of academic setting. Strides in information technology and improvements in networking technology have driven these paces for rapid growth in new applications of web learning. the main purpose of this study was twofold. First, it adopted the theory of task ontology to build up a three- level mediating representation for a task analysis and the task of "knowledge network learning diagnosis analysis system (KNLDAS)" will serve as an example. Second, from modeling standpoint, a methodology, called TTIPP (task analysis, task ontology, IDEFO model, Petri net model, and PNML), was provided to systemically analyze the process of the task and subtask, in terms of the inputs, outputs, mechanisms, controls, using IDEFO and Petri net to further transfer context for computer to generate code.
Conventionally, many researchers and experts are only focused on studies of routing protocol over the MANET. Currently, the pervasion of Internet applications causes TCP as the standard transmission protocol for most ...
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Conventionally, many researchers and experts are only focused on studies of routing protocol over the MANET. Currently, the pervasion of Internet applications causes TCP as the standard transmission protocol for most of the networking applications. For the reliable packets delivery, TCP can support the mechanisms of flow and congestion control. Due to the unconstrained movement of the mobile nodes, TCP is unable to notice network congestion or link down to activate related controls on the MANET. Hence, the main purposes of this paper are to refine the influence parameters and to establish their setting rules for TCP performance on the MANET. First, we discuss several TCP parameters, which affect the performance. According to these parameters, we can statically adjust related RTO parameters and analyze Congestion Window in congestion control for evaluating the performance through the simulation on the MANET. Also, we did propose the tuning rules to improve the TCP performance based on simulation results. Consequently, the final result of this paper can be the reference for further studies in QoS features and other applications on the MANET
this paper developed a robot competition system using a gesture based interface. the used interface recognizes a gesture as meaningful movements from a fixed camera and controls a robot by transforming gesture command...
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For a number of years, software design has featured methods of software engineering. Object-oriented modelling (OOM) is a new and very promising method for the professional production of software. this paper aims to c...
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For a number of years, software design has featured methods of software engineering. Object-oriented modelling (OOM) is a new and very promising method for the professional production of software. this paper aims to contribute to the application of the OOM in planning and deals withthe implementation of controls for flexible automated material flow systems. the method of application of the OOM to the design of automatic systems is systematically approached. the introduction provides an overview of the planning process and the history of modelling methods. this is followed by a demonstration of how OOM and its components, 'object-oriented analysis', 'design' and 'programming', can contribute to the handling of the complex demands of a flexible material flow system (I. Wache, Selbstorganisierende Materialflusssteuerung fur die flexible Fertigung, in: Tagungsband the international Workshop on Machine Dynamics and Production Automation, April 20-22, 1995 Szcecin, Poland, 18 S;H.-J. Warnecke, Revolution der Unternehmenskultur: Das Fraktale Unternehmen, Springer, Berlin, 1993, 282 S.) the example of a control for the flow of material in an automated pallet transportation system proves the feasibility of the methodology. the pallet transportation system is described in detail in I. Wache, Das Materialflusssystem 'Kugelpalette' fur die flexible Fertigung, in: Wissenschaftliche Zeitschrift des Instituts fur Fabriksysteme und Logistik, Universitat Rostock, Institut fur Fabriksysteme und Logistik, 1994, 11 S. (C) 1998 Elsevier science S.A. All rights reserved.
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