In order to assure quality and control process in the development of the aircraft collaborative design software, a maturity assessment model is proposed. The requirements designing—house of quality is designed to eva...In order to assure quality and control process in the development of the aircraft collaborative design software, a maturity assessment model is proposed. The requirements designing—house of quality is designed to evaluate the maturity degree of the solution, and the evaluation results can help to manage and control the development process. Furthermore, a fuzzy evaluation method based on the minimum deviation is proposed to deal with the fuzzy information. The quantitative evaluation result of the maturity degree can be calculated by optimizing the semantic discount factor aim for the minimum deviation. Finally, this model is illustrated and analyzed by an example study of the aircraft collaborative design software.展开更多
The technologies of software architecture are introduced, and the software analysis-and-design process is divided into requirement analysis, software architecture design and system design. Using these technologies, a ...The technologies of software architecture are introduced, and the software analysis-and-design process is divided into requirement analysis, software architecture design and system design. Using these technologies, a model of architecture-centric software analysis and design process（ACSADP） is proposed. Meanwhile, with regard to the completeness, consistency and correctness between the software requirements and design results, the theories of function and process control are applied to ACSADP. Finally, a model of integrated development environnment （IDE） for ACSADP is propcsed. It can be demonstrated by the practice that the model of ACSADP can aid developer to manage software process effectively and improve the quality of software analysis and design.展开更多
With the development of computer science,the software technology changes with each passing day,itput forward higher and higher technical requirements for the software developers.Aim at each link in the process of deve...With the development of computer science,the software technology changes with each passing day,itput forward higher and higher technical requirements for the software developers.Aim at each link in the process of development,the present paper put forward a kind of software engineering personnel training system,the system can build a unified learning,management and evaluation system,to avoid the disadvantages of the traditional single system structure;the training process is more flexible,and it couldreduce the complexity of the artificial training and cause it to become more practical value.展开更多
为了解决板料成形中起皱和拉裂的问题,以某汽车挡泥板为研究对象,基于Design-exper软件,建立了摩擦系数、压边力、拉延筋阻力系数与板料拉裂、起皱之间关系的数学模型。并利用该软件进行了多目标优化,得到了最佳的参数组合:摩擦系数为0....为了解决板料成形中起皱和拉裂的问题,以某汽车挡泥板为研究对象,基于Design-exper软件,建立了摩擦系数、压边力、拉延筋阻力系数与板料拉裂、起皱之间关系的数学模型。并利用该软件进行了多目标优化,得到了最佳的参数组合:摩擦系数为0.13,压边力为350 k N,拉延筋阻力系数为35%。通过有限元模拟和生产实践验证,证明了该方法的可行的。展开更多
In China,a new "Design standard for energy efficiency of residential buildings (for cold region)" was introduced in 2006. In this new standard,more high level insulation of the building envelope is required,...In China,a new "Design standard for energy efficiency of residential buildings (for cold region)" was introduced in 2006. In this new standard,more high level insulation of the building envelope is required,yearly energy requirement for heating must be less than 55 kWh/(m2·a)(regarded as a low-energy house). The new attempt was carried out in the process of architecture design with an evaluation on energy consumption of the building. The design plan was brought forward and compared. PHPP software from German was applied to calculate energy consumption of the passive residential building. The optimum design planning was discussed and model of passive house suited to China's national conditions were attempted. The compactness,solar air collector and the window-wall ratio have essential influence on the energy consumption of buildings. The annual heat demands for the buildings with the window-wall ratio 0.35 and 0.50 are 48 kWh/(m2·a) and 46 kWh/(m2·a),respectively. The yearly auxiliary heat of building with the wall-mounted solar air collectors and the window-wall ratio 0.35 is just 4.8 kWh/(m2·a).展开更多
Rock slope stability is a very important research area for many geo-engineers concerned with civil or mining works.Slope stability of pits,roads,tailings dams and other embankments is very cardinal as it directly impa...Rock slope stability is a very important research area for many geo-engineers concerned with civil or mining works.Slope stability of pits,roads,tailings dams and other embankments is very cardinal as it directly impacts on the working or utilization of these facilities.After a spate slope failures at the Nchanga Open Pits,a challenge arose to investigate the design parameters that have been in use.This research展开更多
针对高频地波雷达(High frequency surface wave radar,HFSWR)在探测中产生的回波数据,传统的人工识别和分类方法存在工作量大、效率低和主观性强等问题,本研究在分析一阶海杂波、电离层杂波和射频干扰的回波数据特性的基础上,创新性地...针对高频地波雷达(High frequency surface wave radar,HFSWR)在探测中产生的回波数据,传统的人工识别和分类方法存在工作量大、效率低和主观性强等问题,本研究在分析一阶海杂波、电离层杂波和射频干扰的回波数据特性的基础上,创新性地提出了基于YOLOv5识别模型的HFSWR杂波和干扰识别分类方法。该方法旨在帮助研究人员在海量实验数据中快速筛选出符合其科学研究需求的数据集,从而提高研究效率和数据准确性。在具体实施过程中,通过采用批量实测距离-多普勒(Range-Doppler,RD)谱数据对所提出模型进行训练和分析,使该方法能够在频域范围内对杂波和干扰进行有效识别。本研究以该识别分类算法为核心,进一步基于Python语言设计了一款地波雷达智能杂波和干扰识别分类软件。经过严格的批量实测数据测试验证,该软件能够满足设计需求,具有良好的可靠性,极大地提高了研究人员筛选有效实测数据的工作效率,为科学研究工作提供了有力的技术支撑。展开更多
基金supported by the National Natural Science Foundation for Youth of China(61802174)the Natural Science Foundation for Youth of Jiangsu Province(BK20181016)+1 种基金the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(18KJB520019)the Scientific Research Foundation of Nanjing Institute of Technology of China(YKJ201614)
文摘In order to assure quality and control process in the development of the aircraft collaborative design software, a maturity assessment model is proposed. The requirements designing—house of quality is designed to evaluate the maturity degree of the solution, and the evaluation results can help to manage and control the development process. Furthermore, a fuzzy evaluation method based on the minimum deviation is proposed to deal with the fuzzy information. The quantitative evaluation result of the maturity degree can be calculated by optimizing the semantic discount factor aim for the minimum deviation. Finally, this model is illustrated and analyzed by an example study of the aircraft collaborative design software.
文摘The technologies of software architecture are introduced, and the software analysis-and-design process is divided into requirement analysis, software architecture design and system design. Using these technologies, a model of architecture-centric software analysis and design process（ACSADP） is proposed. Meanwhile, with regard to the completeness, consistency and correctness between the software requirements and design results, the theories of function and process control are applied to ACSADP. Finally, a model of integrated development environnment （IDE） for ACSADP is propcsed. It can be demonstrated by the practice that the model of ACSADP can aid developer to manage software process effectively and improve the quality of software analysis and design.
文摘With the development of computer science,the software technology changes with each passing day,itput forward higher and higher technical requirements for the software developers.Aim at each link in the process of development,the present paper put forward a kind of software engineering personnel training system,the system can build a unified learning,management and evaluation system,to avoid the disadvantages of the traditional single system structure;the training process is more flexible,and it couldreduce the complexity of the artificial training and cause it to become more practical value.
文摘为了解决板料成形中起皱和拉裂的问题,以某汽车挡泥板为研究对象,基于Design-exper软件,建立了摩擦系数、压边力、拉延筋阻力系数与板料拉裂、起皱之间关系的数学模型。并利用该软件进行了多目标优化,得到了最佳的参数组合:摩擦系数为0.13,压边力为350 k N,拉延筋阻力系数为35%。通过有限元模拟和生产实践验证,证明了该方法的可行的。
基金Project(50778032) supported by the National Natural Science Foundation of ChinaProject(2006BAA04B04) supported by the National Science and Technology Pillar Program During 11th-Five-year Plan of ChinaProject(JN-200912) supported by Open Fund of Key Laboratory in Liaoning Province’s Universities,China
文摘In China,a new "Design standard for energy efficiency of residential buildings (for cold region)" was introduced in 2006. In this new standard,more high level insulation of the building envelope is required,yearly energy requirement for heating must be less than 55 kWh/(m2·a)(regarded as a low-energy house). The new attempt was carried out in the process of architecture design with an evaluation on energy consumption of the building. The design plan was brought forward and compared. PHPP software from German was applied to calculate energy consumption of the passive residential building. The optimum design planning was discussed and model of passive house suited to China's national conditions were attempted. The compactness,solar air collector and the window-wall ratio have essential influence on the energy consumption of buildings. The annual heat demands for the buildings with the window-wall ratio 0.35 and 0.50 are 48 kWh/(m2·a) and 46 kWh/(m2·a),respectively. The yearly auxiliary heat of building with the wall-mounted solar air collectors and the window-wall ratio 0.35 is just 4.8 kWh/(m2·a).
文摘Rock slope stability is a very important research area for many geo-engineers concerned with civil or mining works.Slope stability of pits,roads,tailings dams and other embankments is very cardinal as it directly impacts on the working or utilization of these facilities.After a spate slope failures at the Nchanga Open Pits,a challenge arose to investigate the design parameters that have been in use.This research
文摘针对高频地波雷达(High frequency surface wave radar,HFSWR)在探测中产生的回波数据,传统的人工识别和分类方法存在工作量大、效率低和主观性强等问题,本研究在分析一阶海杂波、电离层杂波和射频干扰的回波数据特性的基础上,创新性地提出了基于YOLOv5识别模型的HFSWR杂波和干扰识别分类方法。该方法旨在帮助研究人员在海量实验数据中快速筛选出符合其科学研究需求的数据集,从而提高研究效率和数据准确性。在具体实施过程中,通过采用批量实测距离-多普勒(Range-Doppler,RD)谱数据对所提出模型进行训练和分析,使该方法能够在频域范围内对杂波和干扰进行有效识别。本研究以该识别分类算法为核心,进一步基于Python语言设计了一款地波雷达智能杂波和干扰识别分类软件。经过严格的批量实测数据测试验证,该软件能够满足设计需求,具有良好的可靠性,极大地提高了研究人员筛选有效实测数据的工作效率,为科学研究工作提供了有力的技术支撑。
