The recruitment process presents a significant challenge for Human Resource (HR) staff, particularly in their ability to objectively assess candidate competencies and align them with job requirements. While qualitativ...
详细信息
The paper presents a major update of the software tool TimeNET, a package for the modeling and performance evaluation of standard and colored stochastic Petri nets. Among its main characteristics are simulation and an...
详细信息
The paper presents a major update of the software tool TimeNET, a package for the modeling and performance evaluation of standard and colored stochastic Petri nets. Among its main characteristics are simulation and analysis modules for stationary and transient evaluation of Petri nets including non-exponentially distributed delays, as well as an efficient simulation module for complex colored models. An overview of the tool is given as well as a description of the new features, which are demonstrated using a manufacturing system application example. The tool is available free of charge for non-commercial use.
Model-based analysis and validation using simulation is a helpful tool in the engineering of complex systems. This paper presents a tool chain for the model-based architectural design of avionic fiber-optic networks. ...
详细信息
Model-based analysis and validation using simulation is a helpful tool in the engineering of complex systems. This paper presents a tool chain for the model-based architectural design of avionic fiber-optic networks. A recently proposed framework for simulation-based domain-specific tools is the basis for the development. It supports a model-based design workflow and offers a new 3D graphical user interface for location-based configuration and result visualization of the underlying simulation tool. The benefits of the tool are validated with an application example, in which different topologies for avionic fiber-optical networks are evaluated and compared.
Cyber-physical systems are expected to be an enabler for better control of production systems. They require a combination of heterogeneous sensors and systems processing data from various sources. We present an archit...
详细信息
Runtime testing is a common way to detect faults during normal system operation. To achieve a specific diagnostic coverage runtime testing is also used in safety critical, automotive embedded systems. In this paper we...
详细信息
The stream contents services are becoming more popular due to the growth of high-speed network technology and client devices such as set-top-box and HDTV. Thus, we should prepare the contents streaming media servers s...
详细信息
ISBN:
(纸本)1932415262
The stream contents services are becoming more popular due to the growth of high-speed network technology and client devices such as set-top-box and HDTV. Thus, we should prepare the contents streaming media servers supporting service availability in order to guarantee continuous service on the event of system failures or temporary network disconnections. In this paper, we propose LSS (Log Stream Status) and RRD (Ready Resource for instant Delivery) mechanisms. Although these mechanisms required additional operations, we found that they could be applied to clustered media servers with minimum overhead. Additionally, these mechanisms helped service availability up.
Analysis and validation using simulation is a helpful tool in systems engineering, but requires in-depth knowledge of various aspects of the system itself, the used model class(es), an appropriate software tool, and s...
详细信息
ISBN:
(纸本)9781467331074
Analysis and validation using simulation is a helpful tool in systems engineering, but requires in-depth knowledge of various aspects of the system itself, the used model class(es), an appropriate software tool, and sometimes softwareengineering. Usually, this expertise is spread over a number of team members, and thus the development of a simulation-based system design tool is not a simple task. This paper presents a framework enabling the rapid development of extensible and reusable simulation-based applications. It supports an agile, iterative, evolutionary, and architecture-centric software development process. The design of the framework together with its components as well as the corresponding software development process is described. As an example, an environment for the configuration and analysis of wireless sensor network applications in the aeronautic domain is presented, which has been designed and implemented based on the proposed environment.
Modern software frameworks for Model-Based systems engineering (MBSE) methodologies are proprietary and commonly restricts to a poor choice of domain specific languages. Furthermore, the interoperablity and model inte...
详细信息
ISBN:
(纸本)9781467331074
Modern software frameworks for Model-Based systems engineering (MBSE) methodologies are proprietary and commonly restricts to a poor choice of domain specific languages. Furthermore, the interoperablity and model interchange support between frameworks is a technically hard challenge. The industrial strength standard OMG MOF (Meta-Object Facility) is a solid approach for the definition of domain specific languages. Applying meta-modeling techniques to existing modeling and simulation frameworks reduces obscurity of proprietarity and implicitely language characteristics. On the other hand, standard compliance improves product openness/transparency, reliability and confidence as for primary modes of operation. This paper presents a methodology to incorporate methods of meta-modeling and standard compliant domain specific languages in an existing modeling and simulation framework. First results are emerged and exemplified for an effective modeling dialect called MML (MLDesigner Modeling Language). Future prospects reviews already accomplished goals in this project, address several alternatives and improvements and gives an overview of ongoing development.
Wireless sensor network technologies can be used for industrial embedded system design to save cabling cost and weight. However, their environment, architecture, and design issues are quite different from original sen...
详细信息
ISBN:
(纸本)9781467331074
Wireless sensor network technologies can be used for industrial embedded system design to save cabling cost and weight. However, their environment, architecture, and design issues are quite different from original sensor network applications. Simulation tools and system design environments have to be adapted to the special requirements, such as operational modes and phases which influence the system. This paper presents a more detailed wireless sensor network to check against the application requirements concerning QoS, reliability, and lifetime. An avionics application example is presented.
暂无评论