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邮轮管系二维和三维集成设计
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作者 朱安庆 郭阳 +2 位作者 王炬成 赵旭 袁飞晖 《船舶工程》 CSCD 北大核心 2023年第9期20-25,共6页
针对管系二维原理图三维建模过程中依靠人为进行数据传输存在的工作量大且易出错的问题,以管系原理图为研究对象,提出以管系信息为基础、驱动规则为核心的设计架构,结合C#语言分别对中望CAD和Smart3D软件进行二次开发,实现管系二维和三... 针对管系二维原理图三维建模过程中依靠人为进行数据传输存在的工作量大且易出错的问题,以管系原理图为研究对象,提出以管系信息为基础、驱动规则为核心的设计架构,结合C#语言分别对中望CAD和Smart3D软件进行二次开发,实现管系二维和三维集成设计,打通了不同软件间异构数据壁垒,实现了数据驱动三维建模。经实例验证,集成设计模块有效提升了管系设计效率。 展开更多
关键词 管系建模 二维和三维集成 数字化造船 数据库技术
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ANALYSIS TOOL OF REQUIREMENT AND ARCHITECTURE MANAGEMENT IN COMPLEX SYSTEM 被引量:1
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作者 吴洁 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2005年第3期252-258,共7页
To facilitate system integration and evolution, modeling of complex systems requires a complementary management of system requirements and the architecture. Software tools are essential to support the above management... To facilitate system integration and evolution, modeling of complex systems requires a complementary management of system requirements and the architecture. Software tools are essential to support the above management effectively. The envisaged analysis tool for requirement and architecture management (ATRAM) is used to address the following 3 issues: (1) system requirements; (2) architecture presentation (modeling); (3) representation (marking-up) and traceability between the components of both sides. In ATRAM, a set of analysis tools is proposed. It includes a tool assisting in the generation/development of requirement documents pertaining to the architecture of composed systems, and an XML based tool for interoperability checking. It is useful for analyzing the influences of the change on enterprise system requirements or the architecture. 展开更多
关键词 system modelling architecture management XML schema
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8000HP深水三用工作船管系生产设计 被引量:1
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作者 徐海生 金哲 杨斌 《船舶设计通讯》 2019年第A01期133-138,共6页
8000HP深水三用工作船为一型多功能近海辅助船,为深水和常规水域的钻井平台提供生产、救助、守护等服务,特点为功能复杂,设备繁多。管系生产设计重点是机舱布置,机舱布置的关键点是保证通道空间、设备维修空间。通过分析,总结了该船机... 8000HP深水三用工作船为一型多功能近海辅助船,为深水和常规水域的钻井平台提供生产、救助、守护等服务,特点为功能复杂,设备繁多。管系生产设计重点是机舱布置,机舱布置的关键点是保证通道空间、设备维修空间。通过分析,总结了该船机舱设备建模、布置方法、注意事项和管系建模前准备工作、管系重量控制等。 展开更多
关键词 管系生产设计 机舱设备布置 管系建模准备
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TRIBON在管系生产设计中的应用
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作者 朱明 孙健 杨娟 《科技与企业》 2014年第15期363-363,共1页
Tribon系统是一套计算机辅助设计、生产及信息集成软件系统,在管系生产设计方面,优于其它设计软件。
关键词 TRIBON 管系建模系统 管子生产设计 管支架生产设计
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THEMODELINGOFATCSYSTEMSBASEDONPETRINET 被引量:1
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作者 Huang Shengguo L Bin Zhong Liang Civil Aviation College, NUAA29 Yudao Street, Nanjing 210016, P.R.China 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 1996年第1期21-25,共5页
In this paper a modeling method of ATC system is developed by using object Petri net. The formalized definition of the senior Petri net is given and illustrated by a practical example.
关键词 air traffic control MODELING Petri net system modeling
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Trust Management Mechanism for Internet of Things 被引量:4
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作者 GU Lize WANG Jingpei SUN Bin 《China Communications》 SCIE CSCD 2014年第2期148-156,共9页
Trust management has been proven to be a useful technology for providing security service and as a consequence has been used in many applications such as P2P, Grid, ad hoc network and so on. However, few researches ab... Trust management has been proven to be a useful technology for providing security service and as a consequence has been used in many applications such as P2P, Grid, ad hoc network and so on. However, few researches about trust mechanism for Internet of Things (IoT) could be found in the literature, though we argue that considerable necessity is held for applying trust mechanism to IoT. In this paper, we establish a formal trust management control mechanism based on architecture modeling of IoT. We decompose the IoT into three layers, which are sensor layer, core layer and application layer, from aspects of network composition of loT. Each layer is controlled by trust management for special purpose: self-organized, affective routing and multi-service respectively. And the final decision-making is performed by service requester according to the collected trust information as well as requester' policy. Finally, we use a formal semantics-based and fuzzy set theory to realize all above trust mechanism, the result of which provides a general framework for the development of trust models of IoT. 展开更多
关键词 Internet of Things trustmanagement formal semantics trust decision-making
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A prototype of workflow management system for construction design projects
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作者 杨明宇 《Journal of Chongqing University》 CAS 2005年第3期144-148,共5页
A great deal of benefits can be achieved if information and process are integrated within the building design project. This paper aims to establish a prototype of workflow management system for construction design pro... A great deal of benefits can be achieved if information and process are integrated within the building design project. This paper aims to establish a prototype of workflow management system for construction design project through the application of workflow technology. The composition and function of prototype is presented to satisfy the needs of information share and process integration. By integrating all subsystems and modules of the prototype, the whole system can deal with design information-flow modeling, emulating and optimizing, task planning and distributing, automatic tracking and monitoring, as well as network service, etc. In this way, the collaborative design environment of building design proiect is brought into being. 展开更多
关键词 workflow management system collaborative desian Intearation modelina simulatina and optimizina
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The Construction of Research Network Management Platform based on BS Structure
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作者 Xiang Xin 《International Journal of Technology Management》 2014年第12期1-3,共3页
In this paper, using UML modeling tool (Rational Rose) conducted a needs analysis and modeling system, and on this basis, we design the interface modnle functions, system architecture and database. The paper finally... In this paper, using UML modeling tool (Rational Rose) conducted a needs analysis and modeling system, and on this basis, we design the interface modnle functions, system architecture and database. The paper finally designed and realized the system based on the. NET platform and Ajax technology. The system uses SQL Server as the background data management system, and in the end using ADO.NET technology to realize data access. According to the actual scientific research management, system design includes integrated office, scientific research institutions, scientific research personnel, research projects and other subsystems, the majority of teachers and the laboratory research team can within the prescribed time limit, in any location by logging into the science and Technology Department of scientific research project management webpage query declaration, provides great convenience for research teachers. 展开更多
关键词 scientific research management management information system B/S .NET AJAX
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Modeling and Analysis of Data Dependencies in Business Process for Data-Intensive Services 被引量:1
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作者 yuze huang jiwei huang +1 位作者 budan wu junliang chen 《China Communications》 SCIE CSCD 2017年第10期151-163,共13页
With the growing popularity of data-intensive services on the Internet, the traditional process-centric model for business process meets challenges due to the lack of abilities to describe data semantics and dependenc... With the growing popularity of data-intensive services on the Internet, the traditional process-centric model for business process meets challenges due to the lack of abilities to describe data semantics and dependencies, resulting in the inflexibility of the design and implement for the processes. This paper proposes a novel data-aware business process model which is able to describe both explicit control flow and implicit data flow. Data model with dependencies which are formulated by Linear-time Temporal Logic(LTL) is presented, and their satisfiability is validated by an automaton-based model checking algorithm. Data dependencies are fully considered in modeling phase, which helps to improve the efficiency and reliability of programming during developing phase. Finally, a prototype system based on j BPM for data-aware workflow is designed using such model, and has been deployed to Beijing Kingfore heating management system to validate the flexibility, efficacy and convenience of our approach for massive coding and large-scale system management in reality. 展开更多
关键词 data-aware business process data-intensive services data dependency linear-time temporal logic(LTL) services computing
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System Dynamics Modeling for Sustainable Water Management of a Coastal Area in Shandong Province, China
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作者 Qin Huanhuan Zhang Baoxiang Meng Fanhai 《Journal of Earth Science and Engineering》 2016年第4期226-234,共9页
Water is one of the basic materials in human existence and the development of society and economy. Its sustainable management has always been an eternal subject for the management of human society and also a complex s... Water is one of the basic materials in human existence and the development of society and economy. Its sustainable management has always been an eternal subject for the management of human society and also a complex systemic problem. How to take advantages of water has been a big event in such an agricultural country like China. As economically developed areas, coastal areas are facing water shortage problems due to the rapid economic and social development and inappropriate and unsustainable water management measures. To fully understand and study such problems faced by the coastal areas needs a systematic and integrated framework to consider the various social-economic, natural and engineering factors that affect the sustainable development of water in those areas. The SD (system dynamics) methodology, which is an approach that has been successfully used in solving complex systematic problems in general, and in solving water management problems in particular for more than 50 years, was applied to a typical coastal area, Longkou City in Shandong Province of China, to study and analyze the future sustainable water management of this city. Then the quantitative modeling and analysis of the water development were carried out through scenario analysis. Four different scenarios (business as usual, economic development, water resources protection, and comprehensive) were designed by changing the values of decision-making variables. The total water demand in 2030 of these four scenarios are 0.455 billion m3, 0.793 billion m3, 0.412 billion m3 and 0.487 billion m3, respectively; the corresponding water deficit of these scenarios are 0.292 billion m3, 0.634 billion m3, 0.254 billion m3 and 0.329 billion m3, respectively. The comparison results indicated that the comprehensive scenario is the optimal one among these designed scenarios. To totally solve the water shortage problem with the economy developed in Longkou City needs to take more effective measures to reduce water consumption and improve water conservation technologies. 展开更多
关键词 Sustainable water management coastal areas system dynamics scenario analysis
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Thermal Modeling and Cooling Analysis of High-power Lithium Ion Cells 被引量:10
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作者 Zhuqian Zhang Li Ji a Nan Zhao Lixin Yang 《Journal of Thermal Science》 SCIE EI CAS CSCD 2011年第6期570-575,共6页
The heat generation model and three-dimensional computational fluid dynamics model for lithium ion cells were established with boundary conditions defined.In order to provide a better insight about the behaviors of hi... The heat generation model and three-dimensional computational fluid dynamics model for lithium ion cells were established with boundary conditions defined.In order to provide a better insight about the behaviors of high-power lithium ion cells under realistic discharge conditions,the temperature difference of the cells and an active thermal management system with a pure air-cooling mode were analyzed and predicted with the factors affecting the unevenness of temperature field discussed.The results show a significant effect of the cooling flow rate on the temperature rise of the cells for all discharge rates.Average surface temperatures are relatively uniform at lower discharge rate that makes it easier to control the temperature of the pack.Cell temperatures are expected to rise significantly toward the end of discharge and they show non-uniformity at higher discharge rates.Adequate air flow rate of active cooling is required at high discharge rate and high ambient temperature for practical pack thermal management system. 展开更多
关键词 Lithium ion battery thermal management system air-cooling temperature rise
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Secretogranln-II plays a critical role in zebrafis neurovascular modeling 被引量:1
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作者 Binbin Tao Hongling Hu +5 位作者 Kimberly Mitchell Ji Chen Haibo Jia Zuoyan Zhu Vance L. Trudeau Wei Hu 《Journal of Molecular Cell Biology》 SCIE CAS CSCD 2018年第5期388-401,共14页
Secretoneurin (SN) is a neuropeptide derived from specific proteolytic processing of the precursor secretogranin II (Sgll). In zebrafish and other teleosts, there are two paralogs named sglla and sgllb. Our result... Secretoneurin (SN) is a neuropeptide derived from specific proteolytic processing of the precursor secretogranin II (Sgll). In zebrafish and other teleosts, there are two paralogs named sglla and sgllb. Our results showed that neurons expressing sgllb were aligned with central arteries in the hindbrain, demonstrating a close neurovascular association. Both sgllb-/- and sgllo-/-/sgllb-/- mutant embryos were defective in hindbrain central artery development due to impairment of migration and proliferation of central artery cells. Further study revealed that sgllb is non-ceU autonomous and required for central artery development. Hindbrain arterial and venous network identities were not affected in sgllb-/- mutant embryos, and the mRNA levels of Notch and VEGF pathway-related genes were not altered. However, the activation of MAPK and PI3K/AKT pathways was inhibited in sgllb-/- mutant embryos. Reactivation of MAPK or PI3K/AKT in endothelial cells could partially rescue the central artery developmental defects in the sgllb mutants. This studV provides the first in vivo evidence that sgllb ptavs a critical rote in neurovascutar modeling of the hindbrain. Targeting the Sgll system may, therefore, represent a new avenue for the treatment of vascular defects in the central nervous system. 展开更多
关键词 Secretogranin-II SECRETONEURIN TALENs NEUROVASCULAR zebrafish
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