The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform

Yingwu Chen - One of the best experts on this subject based on the ideXlab platform.

  • Capability Requirement planning of Weapon System-of-systems based on Interval Weighted Constraint Network
    IEEE Conference Anthology, 2013
    Co-Authors: Long Li, Yingwu Chen, Kewei Yang
    Abstract:

    Capability-Based Requirements management and planning thoughts and methods have gone increasingly deep into the development of Weapon System-of-Systems (WSoS). In the traditional top-to-bottom Capability Requirement planning (CRP) methods, the constraints among different capabilities indexes acquired from the tasks decomposition are neglected, which leads to the irrationalities and conflicts between different WSoS Capability Requirement indexes. Based on the analysis and description of Capability Requirements planning problem, the constraints are divided into five types and extracted from WSoS according multiple views thoughts. In addition, Interval Weighted Constraint Network (IWCN) is introduced and a consistency detection algorithm and a conflicts elimination strategy are proposed to achieve a capabilities Requirement plan satisfying the tasks Requirements and the capabilities indexes constraints. Finally, the practical applicability within a Joint Operations System of Systems (JOSoS) based on the space force Capability Requirement scheme planning is demonstrated, which proves the validation of the method built in this study.

  • Capability Requirement analysis of airdrop assault system-of-systems based on UML/MM integrated modeling and simulation
    IEEE Conference Anthology, 2013
    Co-Authors: Long Li, Zhiwei Yang, Yingwu Chen
    Abstract:

    Large-scale helicopter group is an important part of the Airdrop Assault System of Systems (AASoS). How to plan the scale of helicopter group and achieve the best operational effectiveness is a focus of the AASoS Capability Requirement analysis. Based on the macro-micro characteristic of the system of systems and the individual system, airdrop assault combat models are divided into three types separately in macro and micro perspective. A UML/MM modeling method for airdrop assault combat is proposed and the models are built in UML and mathematic method (MM) respectively. In addition, an airdrop assault combat simulation system is developed and thirteen simulation plans of different scale values are designed as the inputs of the system. The optimal scale value of helicopter group under the certain scenario is gained through the analysis of the effectiveness based on the simulation results. In this scale condition, the AASoS achieves its optimal survival and time effectiveness.

  • Capability Requirement analysis of airdrop assault system of systems based on uml mm integrated modeling and simulation
    IEEE Conference Anthology, 2013
    Co-Authors: Long Li, Zhiwei Yang, Yingwu Chen
    Abstract:

    Large-scale helicopter group is an important part of the Airdrop Assault System of Systems (AASoS). How to plan the scale of helicopter group and achieve the best operational effectiveness is a focus of the AASoS Capability Requirement analysis. Based on the macro-micro characteristic of the system of systems and the individual system, airdrop assault combat models are divided into three types separately in macro and micro perspective. A UML/MM modeling method for airdrop assault combat is proposed and the models are built in UML and mathematic method (MM) respectively. In addition, an airdrop assault combat simulation system is developed and thirteen simulation plans of different scale values are designed as the inputs of the system. The optimal scale value of helicopter group under the certain scenario is gained through the analysis of the effectiveness based on the simulation results. In this scale condition, the AASoS achieves its optimal survival and time effectiveness.

  • Research on Capability Requirements generation of Weapon System-of-systems based on CRTAM model
    2012 7th International Conference on System of Systems Engineering (SoSE), 2012
    Co-Authors: Long Li, Qing-song Zhao, Yingwu Chen
    Abstract:

    The thoughts and methods of Capability-Based Requirement analysis have gone increasingly deep into the development of Weapon System-of-Systems (WSoS). Effective analysis and programming of Capability are fundamental tasks for Requirement analysis of WSoS. Under the background of operation, there are repeating capabilities among different operational tasks. Acquiring Capability Index Requirements (CIRs) from various Operational Task Requirements (OTRs) is difficult. To resolve this problem, the value of each Capability index is measured as an interval and Meta-activity model is proposed, the operational activity is decomposed to Meta-activity collections and the Capability Requirement of a single operational task is captured using Meta-activity-Capability mapping. Based on this, the WSoS Capability indices are divided into five kinds and four types of Capability Requirements Transverse Aggregation Model (CRTAM) are built to deal with the CIRs acquired from the tasks decomposition. A Capabilities Indices Requirements List (CIRL) under the multi-tasks condition is gained. Finally, the method is validated by an example of anti-stealth air defense systems of systems (ASADSoS).

  • SoSE - Research on Capability Requirements generation of Weapon System-of-systems based on CRTAM model
    2012 7th International Conference on System of Systems Engineering (SoSE), 2012
    Co-Authors: Long Li, Qing-song Zhao, Yingwu Chen
    Abstract:

    The thoughts and methods of Capability-Based Requirement analysis have gone increasingly deep into the development of Weapon System-of-Systems (WSoS). Effective analysis and programming of Capability are fundamental tasks for Requirement analysis of WSoS. Under the background of operation, there are repeating capabilities among different operational tasks. Acquiring Capability Index Requirements (CIRs) from various Operational Task Requirements (OTRs) is difficult. To resolve this problem, the value of each Capability index is measured as an interval and Meta-activity model is proposed, the operational activity is decomposed to Meta-activity collections and the Capability Requirement of a single operational task is captured using Meta-activity-Capability mapping. Based on this, the WSoS Capability indices are divided into five kinds and four types of Capability Requirements Transverse Aggregation Model (CRTAM) are built to deal with the CIRs acquired from the tasks decomposition. A Capabilities Indices Requirements List (CIRL) under the multi-tasks condition is gained. Finally, the method is validated by an example of anti-stealth air defense systems of systems (ASADSoS).

Long Li - One of the best experts on this subject based on the ideXlab platform.

  • Capability Requirement planning of Weapon System-of-systems based on Interval Weighted Constraint Network
    IEEE Conference Anthology, 2013
    Co-Authors: Long Li, Yingwu Chen, Kewei Yang
    Abstract:

    Capability-Based Requirements management and planning thoughts and methods have gone increasingly deep into the development of Weapon System-of-Systems (WSoS). In the traditional top-to-bottom Capability Requirement planning (CRP) methods, the constraints among different capabilities indexes acquired from the tasks decomposition are neglected, which leads to the irrationalities and conflicts between different WSoS Capability Requirement indexes. Based on the analysis and description of Capability Requirements planning problem, the constraints are divided into five types and extracted from WSoS according multiple views thoughts. In addition, Interval Weighted Constraint Network (IWCN) is introduced and a consistency detection algorithm and a conflicts elimination strategy are proposed to achieve a capabilities Requirement plan satisfying the tasks Requirements and the capabilities indexes constraints. Finally, the practical applicability within a Joint Operations System of Systems (JOSoS) based on the space force Capability Requirement scheme planning is demonstrated, which proves the validation of the method built in this study.

  • Capability Requirement analysis of airdrop assault system-of-systems based on UML/MM integrated modeling and simulation
    IEEE Conference Anthology, 2013
    Co-Authors: Long Li, Zhiwei Yang, Yingwu Chen
    Abstract:

    Large-scale helicopter group is an important part of the Airdrop Assault System of Systems (AASoS). How to plan the scale of helicopter group and achieve the best operational effectiveness is a focus of the AASoS Capability Requirement analysis. Based on the macro-micro characteristic of the system of systems and the individual system, airdrop assault combat models are divided into three types separately in macro and micro perspective. A UML/MM modeling method for airdrop assault combat is proposed and the models are built in UML and mathematic method (MM) respectively. In addition, an airdrop assault combat simulation system is developed and thirteen simulation plans of different scale values are designed as the inputs of the system. The optimal scale value of helicopter group under the certain scenario is gained through the analysis of the effectiveness based on the simulation results. In this scale condition, the AASoS achieves its optimal survival and time effectiveness.

  • Capability Requirement analysis of airdrop assault system of systems based on uml mm integrated modeling and simulation
    IEEE Conference Anthology, 2013
    Co-Authors: Long Li, Zhiwei Yang, Yingwu Chen
    Abstract:

    Large-scale helicopter group is an important part of the Airdrop Assault System of Systems (AASoS). How to plan the scale of helicopter group and achieve the best operational effectiveness is a focus of the AASoS Capability Requirement analysis. Based on the macro-micro characteristic of the system of systems and the individual system, airdrop assault combat models are divided into three types separately in macro and micro perspective. A UML/MM modeling method for airdrop assault combat is proposed and the models are built in UML and mathematic method (MM) respectively. In addition, an airdrop assault combat simulation system is developed and thirteen simulation plans of different scale values are designed as the inputs of the system. The optimal scale value of helicopter group under the certain scenario is gained through the analysis of the effectiveness based on the simulation results. In this scale condition, the AASoS achieves its optimal survival and time effectiveness.

  • Research on Capability Requirements generation of Weapon System-of-systems based on CRTAM model
    2012 7th International Conference on System of Systems Engineering (SoSE), 2012
    Co-Authors: Long Li, Qing-song Zhao, Yingwu Chen
    Abstract:

    The thoughts and methods of Capability-Based Requirement analysis have gone increasingly deep into the development of Weapon System-of-Systems (WSoS). Effective analysis and programming of Capability are fundamental tasks for Requirement analysis of WSoS. Under the background of operation, there are repeating capabilities among different operational tasks. Acquiring Capability Index Requirements (CIRs) from various Operational Task Requirements (OTRs) is difficult. To resolve this problem, the value of each Capability index is measured as an interval and Meta-activity model is proposed, the operational activity is decomposed to Meta-activity collections and the Capability Requirement of a single operational task is captured using Meta-activity-Capability mapping. Based on this, the WSoS Capability indices are divided into five kinds and four types of Capability Requirements Transverse Aggregation Model (CRTAM) are built to deal with the CIRs acquired from the tasks decomposition. A Capabilities Indices Requirements List (CIRL) under the multi-tasks condition is gained. Finally, the method is validated by an example of anti-stealth air defense systems of systems (ASADSoS).

  • SoSE - Research on Capability Requirements generation of Weapon System-of-systems based on CRTAM model
    2012 7th International Conference on System of Systems Engineering (SoSE), 2012
    Co-Authors: Long Li, Qing-song Zhao, Yingwu Chen
    Abstract:

    The thoughts and methods of Capability-Based Requirement analysis have gone increasingly deep into the development of Weapon System-of-Systems (WSoS). Effective analysis and programming of Capability are fundamental tasks for Requirement analysis of WSoS. Under the background of operation, there are repeating capabilities among different operational tasks. Acquiring Capability Index Requirements (CIRs) from various Operational Task Requirements (OTRs) is difficult. To resolve this problem, the value of each Capability index is measured as an interval and Meta-activity model is proposed, the operational activity is decomposed to Meta-activity collections and the Capability Requirement of a single operational task is captured using Meta-activity-Capability mapping. Based on this, the WSoS Capability indices are divided into five kinds and four types of Capability Requirements Transverse Aggregation Model (CRTAM) are built to deal with the CIRs acquired from the tasks decomposition. A Capabilities Indices Requirements List (CIRL) under the multi-tasks condition is gained. Finally, the method is validated by an example of anti-stealth air defense systems of systems (ASADSoS).

Paul Choudhury - One of the best experts on this subject based on the ideXlab platform.

  • Assessing transfer Capability Requirement for wind power generation using a combined deterministic and probabilistic approach
    2009 IEEE Power & Energy Society General Meeting, 2009
    Co-Authors: Wijarn Wangdee, Wenyuan Li, Wah Shum, Paul Choudhury
    Abstract:

    This paper demonstrates a methodology based on a combined deterministic and probabilistic approach for bulk system adequacy assessment considering proposed wind power generation addition in the Northern Region of British Columbia Transmission Corporation (BCTC) System. The paper illustrates a technique for assessing effective load carrying Capability (ELCC) and generation capacity equivalence (GCE) based on generation system adequacy assessment (HL-I analysis). A traditional deterministic approach is utilized initially to grant the GCE value obtained in the HL-I analysis as the amount of additional transmission system transfer Capability (TC) required for wind power generation. A composite generation and transmission system adequacy assessment (HL-II analysis) is then used to verify the adequacy of the increased TC that is capable of maintaining the same level of system reliability. In addition, an economic analysis for providing an additional TC for wind power generation is also illustrated in the paper.

  • assessing transfer Capability Requirement for wind power generation using a combined deterministic and
    2009
    Co-Authors: Wijarn Wangdee, Wenyuan Li, Wah Shum, Paul Choudhury
    Abstract:

    This paper demonstrates a methodology based on a combined deterministic and probabilistic approach for bulk system adequacy assessment considering proposed wind power generation addition in the Northern Region of British Columbia Transmission Corporation (BCTC) System. The paper illustrates a technique for assessing effective load carrying Capability (ELCC) and generation capacity equivalence (GCE) based on generation system adequacy assessment (HL-I analysis). A traditional deterministic approach is utilized initially to grant the GCE value obtained in the HL-I analysis as the amount of additional transmission system transfer Capability (TC) required for wind power generation. A composite generation and transmission system adequacy assessment (HL-II analysis) is then used to verify the adequacy of the increased TC that is capable of maintaining the same level of system reliability. In addition, an economic analysis for providing an additional TC for wind power generation is also illustrated in the paper.

Wen Lea Pearn - One of the best experts on this subject based on the ideXlab platform.

  • Testing process Capability for one-sided specification limit with application to the voltage level translator
    Microelectronics Reliability, 2002
    Co-Authors: Wen Lea Pearn
    Abstract:

    Process Capability indices CPU and CPL have been widely used in the microelectronics manufacturing industry as Capability measures for processes with one-sided specification limits. In this paper, the theory of statistical hypothesis testing is implemented for normal processes, using the uniformly minimum variance unbiased estimators of CPU and CPL. Efficient SAS computer programs are provided to calculate the critical values and the p-values required for making decisions. Useful critical values for some commonly used Capability Requirements are tabulated. Based on the test a simple but practical step-by-step procedure is developed for in-plant applications. An example on the voltage level translator manufacturing process is given to illustrate how the proposed procedure may be applied to test whether the process meets the preset Capability Requirement. 2002 Elsevier Science Ltd. All rights reserved.

  • Computer program for calculating the p‐value in testing process Capability index Cpmk
    Quality and Reliability Engineering International, 2002
    Co-Authors: Wen Lea Pearn
    Abstract:

    Many process Capability indices, including Cp, Cpk, and Cpm, have been proposed to provide numerical measures on the process potential and performance. Combining the advantages of these indices, Pearn et al. (1992) introduced a new Capability index called Cpmk, which has been shown to be a useful Capability index for processes with two-sided specification limits. In this paper, we implement the theory of a testing hypothesis using the natural estimator of Cpmk, and provide an efficient Maple computer program to calculate the p-values. We also provide tables of the critical values for some commonly used Capability Requirements. Based on the test we develop a simple step-by-step procedure for in-plant applications. The practitioners can use the proposed procedure to determine whether their process meets the preset Capability Requirement, and make reliable decisions. Copyright © 2002 John Wiley & Sons, Ltd.

  • One‐sided Capability indices CPU and CPL: decision making with sample information
    International Journal of Quality & Reliability Management, 2002
    Co-Authors: Wen Lea Pearn, Kuen-suan Chen
    Abstract:

    Process Capability indices have been used in the manufacturing industry to provide quantitative measures on process potential and performance. The formulae for these indices are easy to understand and straightforward to apply. But, since sample data must be collected in order to calculate these indices, a great degree of uncertainty may be introduced into Capability assessments due to sampling errors. Currently, most practitioners simply look at the value of the index calculated from the sample data and then make a conclusion on whether their processes meet the Capability Requirement. This approach is not reliable since sampling errors are ignored. Procedures for two‐sided Capability indices, Cp, Cpk, and Cpm have been developed to assist practitioners to determine whether their processes meet the Capability Requirement based on sample information. In this paper, we first obtain unbiased estimators of CPU and CPL. We then develop a procedure similar to those of Cp, Cpk, and Cpm, for the one‐sided Capability indices CPU and CPL. Practitioners can use the procedure to test whether their processes meet the Capability Requirement.

Laurent Lenoir - One of the best experts on this subject based on the ideXlab platform.

  • An Impedance-Based Method for Distribution System Monitoring
    IEEE Transactions on Smart Grid, 2018
    Co-Authors: Hashem Mortazavi, Hasan Mehrjerdi, Maarouf Saad, Serge Lefebvre, Dalal Asber, Laurent Lenoir
    Abstract:

    This paper presents a new approach in monitoring of a power distribution system. It uses the bus voltage and injected current to extract the apparent impedance seen from the measuring unit location. Then the apparent impedance variation is used for the monitoring of different electrical quantities of the feeder such as feeder power factor, and the minimum and maximum of active and reactive power flow. This paper also presents the mathematics for defining the monitoring zone on the R-X plane to detect those parameters variations. The proposed method was tested with the unbalanced distribution system feeder loading, distributed and lumped model of solar, and wind power generations. OpenDSS and MATLAB are used to test the effectiveness of the method with the IEEE 8500 node test feeder. The dynamic performance of the proposed method is studied for online monitoring of the reactive power Capability Requirement of a Canadian utility for a wind farm integrated to the system. The results show that the monitoring method based on the apparent impedance has a good Capability to detect different operation conditions. In addition, the simplicity of the proposed method allows easy application of it in smart grid and traditional distribution system.