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A"One Engine with Six Gears"System Engineering Methodology for the Economic Development of Unconventional Oil and Gas in China 认领 引用 被引量：16
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作者 Guoxin Li Chenggang Xian He Liu 《Engineering》 SCIE EI CAS CSCD 2022年第11期105-115,共11页
Unconventional oil and gas resources have become the most important and realistic field for increasing China’s domestic oil and gas reserves and production.At present,the production scale does not match the massive a... Unconventional oil and gas resources have become the most important and realistic field for increasing China’s domestic oil and gas reserves and production.At present,the production scale does not match the massive amount of resources and the rapid growth of proven geological reserves.The challenges of technology,cost,management,and methodology restrict large-scale and economic development.Based on successful practices,a"one engine with six gears"system engineering methodology is put forward,which includes life-cycle management,overall synergy,interdisciplinary cross-service integration,marketoriented operation,socialized support,digitalized management,and low-carbon and green development.The methodology has been proved to be effective in multiple unconventional oil and gas national demonstration areas,including the Jimusar continental shale oil demonstration area.Disruptive views are introduced-namely,that unconventional oil and gas do not necessarily yield a low return,nor do they necessarily have a low recovery factor.A determination to achieve economic benefit must be a pervasive underlying goal for managers and experts.Return and recovery factors,as primary focuses,must be adhered to during China’s development of unconventional oil and gas.The required methodology transformation includes a revolution in management systems to significantly decrease cost and increase production,resulting in technological innovation. 展开更多
关键词 Unconventional oil and gas resources System engineering Methodology transformation Life-cycle management Geoscience-to-engineering integration
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A Model of Application System for Man-Machine-Environment System Engineering in Vessels Based on IDEF0 认领 引用 被引量：6
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作者 ZhenShang Changhua Qiu Shifan Zhu 《Journal of Marine Science and Application》 2011年第3期347-357,共11页
Applying man-machine-environment system engineering(MMESE)in vessels is a method to improve the effectiveness of the interaction between equipment, environment, and humans for the purpose of advancing operating effici... Applying man-machine-environment system engineering(MMESE)in vessels is a method to improve the effectiveness of the interaction between equipment, environment, and humans for the purpose of advancing operating efficiency, performance, safety, and habitability of a vessel and its subsystems. In the following research, the life cycle of vessels was divided into 9 phases, and 15 research subjects were also identified from among these phases. The 15 subjects were systemized, and then the man-machine-environment engineering system application model for vessels was developed using the ICAM definition method 0 (IDEF0), which is a systematical modeling method. This system model bridges the gap between the data and information flow of every two associated subjects with the major basic research methods and approaches included, which brings the formerly relatively independent subjects together as a whole. The application of this systematic model should facilitate the application of man-machine-environment system engineering in vessels, especially at the conceptual and embodiment design phases. The managers and designers can deal with detailed tasks quickly and efficiently while reducing repetitive work. 展开更多
关键词 man-machine-environment system engineering(MMESE) ICAM definition method 0(IEDFO) vessel life cycle
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Nitrogen-Doped Hierarchical Heterostructured Aerophobic MoSx/Ni3S2Nanowires by One-pot Synthesis:System Engineering and Synergistic Effect in Electrocatalysis of Hydrogen Evolution Reaction 认领 引用 被引量：5
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作者 Xin Ma Wanru Chen +2 位作者 Qian Li Longjian Xue Chuang Peng 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2021年第4期658-663,共6页
Non-noble metal electrocatalysis has witnessed rapid and profound performance improvements owing to the emergence of advanced nanosynthetic techniques.Integration of these nanotechniques can lead to synergistic perfor... Non-noble metal electrocatalysis has witnessed rapid and profound performance improvements owing to the emergence of advanced nanosynthetic techniques.Integration of these nanotechniques can lead to synergistic performance enhancement,but such system-engineering strategies are difficult to achieve because of the lack of effective synthesis method.We hereby demonstrate an integrated approach that combines most of the existing nanotechniques in a facile one-pot synthesis.Material characterization reveals that the product shows key features intended by techniques including morphological,structural,doping,heterointerface,and surface wetting engineering.The as-obtained nitrogen-doped hierarchical heterostructured MoSx/Ni3S2nanowires show an overpotential that is only50 mV higher than commercial Pt/C for hydrogen evolution reaction over current densities from 10 to 150 mA cm-2.Correlations between the adopted nanotechniques and the electrochemical reaction rates are established by evaluating the impacts of individual techniques on the activation energy,pre-exponential factor,and transfer coefficient.This indepth analysis provides a full account of the synergistic effects and the overall improvement in electrocatalytic performance of hydrogen evolution reaction.This work manifests a generic strategy for multipurpose material design in non-noble metal electrocatalysis. 展开更多
关键词 electrochemical reaction rate nanotechnology non-noble metal catalysis synergistic effect system engineering
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Conceptual Design Process for LEO Satellite Constellations Based on System Engineering Disciplines 认领 引用
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作者 Ali Salehi Mahdi Fakoor +1 位作者 Amirreza Kosari Seyed Mohammad Navid Ghoreishi 《Computer Modeling in Engineering & Sciences》 SCIE EI 2022年第5期599-618,共20页
Satellite design process is an interdisciplinary subject in which the need for collaboration among various science and engineering disciplines is evident.Meanwhile,finding an optimal process for conceptual design of a... Satellite design process is an interdisciplinary subject in which the need for collaboration among various science and engineering disciplines is evident.Meanwhile,finding an optimal process for conceptual design of a satellite,which can optimize time and cost,is still an important issue.In this paper,based on system engineering approach,an optimal design process is proposed for LEO satellite constellations.In the proposed method,design process,design sequences,and data flow are established.In this regard,the conceptual design process is divided into two levels of mission(or constellation)and system(or satellite)as well as 15 main activities based on the mission profile,previous experiences of the authors,and existing literature.Then,the relationships between these activities have been determined by considering the importance of relationships according to their priority.Finally,these relations are optimized based on design structure matrix(DSM).By utilizing this approach,system design process of a telecommunication satellite constellation in LEO is formulated in conceptual design phase.Performance and capability of the proposed approach in optimal design process of the satellite constellation are investigated by comparing the outcome with existing results in the literature. 展开更多
关键词 Satellite constellation system engineering design structure matrix conceptual design
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浅谈系统工程System Engineering(简称SE) 认领 引用
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作者 邹思民 《广州化工》 CAS 1982年第2期47-50,共4页
我们处理任何问题,都必须对那个问题的有关因素联系起来考虑,而这种联系考虑的范围,就叫做系统。系统工程是处理系统的工程技术,是在已有的管理科学的基础上,发展成为当代最新的组织管理技术。朴素的系统概念和处理系统的方法,既是古已... 我们处理任何问题,都必须对那个问题的有关因素联系起来考虑,而这种联系考虑的范围,就叫做系统。系统工程是处理系统的工程技术,是在已有的管理科学的基础上,发展成为当代最新的组织管理技术。朴素的系统概念和处理系统的方法,既是古已有之,又常见于日常工作生活之中;近代的系统工程。 展开更多
关键词 系统工程 组织管理技术 工程技术 SE System Engineering
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Prolog to the Section on Radar System Engineering 认领 引用
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《Journal of Systems Engineering and Electronics》 EI 1995年第1期46-47,共2页
PrologtotheSectiononRadarSystemEngineering￥／／IntheEnglishlanguagewehaveanexpressionthatsaysitispossible＂tolosesightofthefores...
关键词 Prolog to the Section on Radar System Engineering
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Multi-objective optimization of microwave power transmission system architecture with engineering consideration 认领 引用
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作者 DONG Shiwei SHINOHARA Naoki 《中国空间科学技术（中英文）》 CSCD 北大核心 2025年第4期114-122,共9页
In the last decade,space solar power satellites(SSPSs)have been conceived to support net-zero carbon emissions and have attracted considerable attention.Electric energy is transmitted to the ground via a microwave pow... In the last decade,space solar power satellites(SSPSs)have been conceived to support net-zero carbon emissions and have attracted considerable attention.Electric energy is transmitted to the ground via a microwave power beam,a technology known as microwave power transmission(MPT).Due to the vast transmission distance of tens of thousands of kilometers,the power transmitting antenna array must span up to 1 kilometer in diameter.At the same time,the size of the rectifying array on the ground should extend over a few kilometers.This makes the MPT system of SSPSs significantly larger than the existing aerospace engineering system.To design and operate a rational MPT system,comprehensive optimization is required.Taking the space MPT system engineering into consideration,a novel multi-objective optimization function is proposed and further analyzed.The multi-objective optimization problem is modeled mathematically.Beam collection efficiency(BCE)is the primary factor,followed by the thermal management capability.Some tapers,designed to solve the conflict between BCE and the thermal problem,are reviewed.In addition to these two factors,rectenna design complexity is included as a functional factor in the optimization objective.Weight coefficients are assigned to these factors to prioritize them.Radiating planar arrays with different aperture illumination fields are studied,and their performances are compared using the multi-objective optimization function.Transmitting array size,rectifying array size,transmission distance,and transmitted power remaine constant in various cases,ensuring fair comparisons.The analysis results show that the proposed optimization function is effective in optimizing and selecting the MPT system architecture.It is also noted that the multi-objective optimization function can be expanded to include other factors in the future. 展开更多
关键词 space solar power satellite(SSPS) microwave power transmission(MPT) multi-objective function beam collection efficiency(BCE) system engineering
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LLM‑Based Design of Complex Industrial Systems:A Case Study of Heating System Design 认领 引用
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作者 CAI Xin LYU Hongqiang +4 位作者 XU Ran WANG Bo WANG Qi WANG Heyun LIU Xuejun 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2026年第2期251-274,共24页
Modular design of complex engineering systems is a universal technology for rapid system design in the modern industrial field.Generating assembly schemes for modular engineering systems in industrial production is th... Modular design of complex engineering systems is a universal technology for rapid system design in the modern industrial field.Generating assembly schemes for modular engineering systems in industrial production is the core of achieving automation in system design.Traditional system design methods based on human experience suffer from low efficiency and poor adaptability.To enable the automatic assembly of modules for engineering systems,the performance matching and correlation between modules need to be accurately identified.Currently,general large language models,with their strong language analysis capabilities,have been applied to multiple industries.However,limited by data barriers in specific industrial field,their application in assembly of system modules is rare.Therefore,constructing high-quality domain data,fine-tuning professional large language models,and developing domain frameworks for automatic design of modular system constitute an important research direction to be explored at present.Based on the Qwen2.5 open-source large model,we utilize industrial system knowledge to construct a component library and propose a large language model for design of complex industrial system(DCI-LLM).Through the proposed low-rank adaptation(LoRA)-freeze-based“local-collaborative”fine-tuning method which combines local module and global knowledge of the system,DCI-LLM automatically generates system composition schemes and produces the related engineering drawings given system design requirements.We use the scheme design of heating systems as an example to verify the effectiveness of the proposed framework.Experimental results show that the fine-tuned DCI-LLM model achieves accuracy rates of 93.4%and 89.3%in answering questions about module knowledge and global knowledge,respectively.Moreover,scores from professional engineers indicate that DCI-LLM has practical application potential in scheme design of complex modular systems.Our work demonstrates that LLMs have significant application prospects in the field of automatic scheme design for complex industrial systems. 展开更多
关键词 large language model(LLM) low‑rank adaptation(LoRA)fine-tuning freeze fine-tuning complex system design system engineering
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Opportunity and challenge of big data in improving chronic non-communicable diseases: by health system engineering approaches 认领 引用 被引量：4
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作者 Yu Mengsun Lu Zuhong 《Chinese Medical Journal》 SCIE CAS CSCD 2014年第19期3361-3363,共3页
Chronic non-communicable diseases （NCDs） is a sick- state in the complex system of human body. Healthsystems engineering approach can be used to recover health state by many different ways of system adjustments, inc... Chronic non-communicable diseases （NCDs） is a sick- state in the complex system of human body. Healthsystems engineering approach can be used to recover health state by many different ways of system adjustments, including physical exercises, nutrition and psychological intervention, and drug therapies. To evaluate and assess the effects of these adjustments, many parameters of the system states have to be monitored （such as molecular high- throughput technologies, physiological, image, etc.）, and estimated at the different levels （such as molecular, cellular, tissue, organ, and system levels） and on the different dimensions （such as metabolic, immune, neural, etc.） for human system. Huge data have been produced during the whole process, and health systems engineering approach will model health and sick state in the human system by detecting and analyzing these multi-dimension and multi- level big-data in order to find personal suitable adjustment method. 展开更多
关键词 big data health system engineering chronic non-communicable diseases
Thoughts on using scientific system engineering method to develop quantum computer 认领 引用
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作者 Lu Jun Luan Tian +2 位作者 Tang Pengju Zhang Yuntao An Da 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2022年第4期2-8,共7页
As the traditional semiconductor complementary metal oxide semiconductor(CMOS)integrated circuit technology gradually approaches the limit of Moore’s Law,quantum computing,as a new system computing technology,with th... As the traditional semiconductor complementary metal oxide semiconductor(CMOS)integrated circuit technology gradually approaches the limit of Moore’s Law,quantum computing,as a new system computing technology,with the potential for higher computing speed and lower power consumption,is getting more and more attention from governments and research institutions around the world.For instance,the United States(US)government is adopting a bunch of bills to deploy new quantum information processing technology.The European Union’s“quantum declaration”plans to realize customized quantum computers with more than 100 qubits in the next 10 years.The Chinese government also provides strong support for quantum computer research through the project of National Science and Technology Major Projects.In the business field,major companies such as International Business Machines(IBM)Corporation,Intel,Google,Alibaba,Huawei,Baidu,etc.,have joined the“quantum supremacy”competition in order to seize the initiative in the future information field.Facing the rapid development trend of quantum computing,we believe that we should refer to the classical computer industry in the early stage,form an industrial system,and develop the quantum computing industry.We should also use the scientific system engineering method to carry out the research and development of the quantum computer and establish the ecological environment of the quantum computer industry with the demand as the traction,so as to better serve the development of the national economy. 展开更多
关键词 quantum quantum computer scientific system engineering industrial system
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System engineering for water pollution control at the watershed level in China 认领 引用 被引量：2
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作者 Wei MENG 《Frontiers of Environmental Science & Engineering》 EI 2009年第4期443-452,共10页
The present water pollution situation at watershed level in China has been systematically analyzed.The causes of water pollution are attributed to the extensive economic developmental pattern,poor wastewater treatment... The present water pollution situation at watershed level in China has been systematically analyzed.The causes of water pollution are attributed to the extensive economic developmental pattern,poor wastewater treatment,and a lack of nonpoint pollution control.The problems of water pollution control at watershed level include a lack of thought and approach,developmental delay in the environmental standard system,an inadequate monitoring ability,and an inefficient implementation of laws and regulations.From 2006 to 2020,water pollution control and governance will be a national key specific project of science and technology in China.The strategies of this project include establishing a water pollution control system at watershed level,orienting a healthy aquatic ecosystem,conducting risk management,and using comprehensive methods.The goal is to establish and complete a technological system of pollution control and management in three five-year phases.The main tasks are to develop common technologies,management systems,and mechanisms for lake eutrophication control,river pollution control,urban water environmental pollution control,potable water safety,and water environmental management.The bottlenecks of water pollution control and management in China could be systematically removed,and the demonstration of the system engineering approach will be conducted at selected key watersheds. 展开更多
关键词 water pollution control watershed system engineering sustainability integrated watershed management key specific project of science and technology
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Digital Mine Research and Practice Based on Mining and Metallurgy System Engineering 认领 引用
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作者 An-lin Shao 《Frontiers of Engineering Management》 2016年第1期67-73,共7页
Iron ore is necessarily basic raw material for industrialization and urbanization and related to the industrial distribution and development programming.The lean iron ore resource in our country is high-cost and low-e... Iron ore is necessarily basic raw material for industrialization and urbanization and related to the industrial distribution and development programming.The lean iron ore resource in our country is high-cost and low-efficiency,which cannot meet the demand of iron and steel industry,and even endanger the safety of industrial economy.Ansteel mining has created "grade decisionbased multi-system integration" mode of mining and metallurgy system engineering and realized scale and efficient development of lean iron ore on basis of the construction of digital mines.Moreover,the "wisdom mines" was proposed and had led to the transformation and upgrading of iron developments. 展开更多
关键词 exploration of lean iron ore mining and metallurgy system engineering digital mine wisdom mine
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Elementary Analysis on the Technological Features of an Engineering Equipment Facile Diagnosis System 认领 引用 被引量：1
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作者 LI Gui San Department of Mechanical Engineering, Liaoyang Petrochemical Polytechnic School, Liaoyang 111003, P.R.China 《International Journal of Plant Engineering and Management》 2001年第4期220-225,共6页
From the point of systemic engineering, the general properties of an engineering equipment fault diagnosis system and the studying object of diagnosis engineering -were discussed. With the developing course of fault d... From the point of systemic engineering, the general properties of an engineering equipment fault diagnosis system and the studying object of diagnosis engineering -were discussed. With the developing course of fault diagnosis technology, the relationship between facile diagnosis system and diagnosis engineering were also discussed. The basic structure and feature of a facile diagnosis system -were discussed, and the isomorphic of a facile diagnosis system and precise diagnosis system -was presented. The facile diagnosis requires the perfection of method , pertinence and apriority of knowledge, adaptability of the object being diagnosed and the approach to the aim of the diagnosis result, as -well as th? outstanding of main functions. 展开更多
关键词 engineering equipment fault diagnosis system engineering.
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Systematical Development of NVH Engineering for Vehicle Electrical Powertrain Based on an Optimized V-Model 认领 引用
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作者 Shaoyou Shi Kaiyu Yu Zecheng Zhong 《World Journal of Mechanics》 2021年第2期7-15,共9页
For systematical NVH development of vehicle (especially for mass-production passenger vehicles) electric powertrain, an optimized V-Model is designed and has been implemented in the entire component-vehicle developmen... For systematical NVH development of vehicle (especially for mass-production passenger vehicles) electric powertrain, an optimized V-Model is designed and has been implemented in the entire component-vehicle development, which integrates three individual branches: simulation, validation and optimization. Compared to the V-models in the traditional sense, this optimized V-model is not only driven by requirement and task accomplishment but also maximum optimization of NVH system performance. In this case, developing procedures are capable to be efficiently iterated and the NVH engineering can be expanded into 3D with this V-model. 展开更多
关键词 V-Model NVH (Nosie Vibration and Harshness) SEP (System Engineering Process) Electrical Powertrain MBS (Multi-Body System) Acoustic Electromagnetic Gear Mesh Topology Optimization
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基于MBSE的低轨通信卫星设计建模方法 认领 引用
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作者 尚佳策 张锐 +4 位作者 戴娅 朱华 胡思奇 葛林强 师晨光 《系统仿真学报》 EI CAS CSCD 北大核心 2026年第4期1080-1093,共14页
借鉴基于模型的系统工程方法(model based system engineering,MBSE)模型化设计思想,构建了一种适用于低轨通信卫星设计分析的模型架构,该架构采用多维矩阵式思路:在纵向维度上,贯穿任务层、系统层、卫星总体层及分系统层,实现自顶向下... 借鉴基于模型的系统工程方法(model based system engineering,MBSE)模型化设计思想,构建了一种适用于低轨通信卫星设计分析的模型架构,该架构采用多维矩阵式思路:在纵向维度上,贯穿任务层、系统层、卫星总体层及分系统层,实现自顶向下的层级解耦;在横向维度上,构建了涵盖需求域、功能域、结构域与性能域的全视图映射机制。融合产品研制特点,建立了一套覆盖任务论证、总体设计、分系统设计及集成验证全生命周期的建模流程。结果表明:该方法在低轨通信卫星设计阶段能够有效完成需求分析和总体设计,提升整体设计质量,同时对低轨通信卫星研制转型具有重要参考意义。 展开更多
关键词 低轨通信卫星 MBSE(model based system engineering) 模型架构 需求分析 总体设计
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UML-based combat effectiveness simulation system modeling within MDE 认领 引用 被引量：6
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作者 ZHU Zhi LEI Yonglin +2 位作者 SARJOUGHIAN Hessam LI Xiaobo ZHU Yifan 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2018年第6期1180-1196,共17页
To reduce complexity, the combat effectiveness simulation system(CESS) is often decomposed into static structure,physical behavior, and cognitive behavior, and model abstraction is layered onto domain invariant knowle... To reduce complexity, the combat effectiveness simulation system(CESS) is often decomposed into static structure,physical behavior, and cognitive behavior, and model abstraction is layered onto domain invariant knowledge(DIK) and application variant knowledge(AVK) levels. This study concentrates on the specification of CESS’s physical behaviors at the DIK level of abstraction, and proposes a model driven framework for efficiently developing simulation models within model-driven engineering(MDE). Technically, this framework integrates the four-layer metamodeling architecture and a set of model transformation techniques with the objective of reducing model heterogeneity and enhancing model continuity. As a proof of concept, a torpedo example is illustrated to explain how physical models are developed following the proposed framework. Finally, a combat scenario is constructed to demonstrate the availability, and a further verification is shown by a reasonable agreement between simulation results and field observations. 展开更多
关键词 domain specific modeling model-driven development system engineering effectiveness simulation
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Hierarchical resource allocation for integrated modular avionics systems 认领 引用 被引量：10
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作者 Tianran Zhou Huagang Xiong Zhen Zhang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第5期780-787,共8页
Recently the integrated modular avionics （IMA） architecture which introduces the concept of resource partitioning becomes popular as an alternative to the traditional federated architecture. A novel hierarchical app... Recently the integrated modular avionics （IMA） architecture which introduces the concept of resource partitioning becomes popular as an alternative to the traditional federated architecture. A novel hierarchical approach is proposed to solve the resource allocation problem for IMA systems in distributed environments. Firstly, the worst case response time of tasks with arbitrary deadlines is analyzed for the two-level scheduler. Then, the hierarchical resource allocation approach is presented in two levels. At the platform level, a task assignment algorithm based on genetic simulated annealing （GSA） is proposed to assign a set of pre-defined tasks to different processing nodes in the form of task groups, so that resources can be allocated as partitions and mapped to task groups. While yielding to all the resource con- straints, the algorithm tries to find an optimal task assignment with minimized communication costs and balanced work load. At the node level, partition parameters are optimized, so that the computational resource can be allocated further. An example is shown to illustrate the hierarchal resource allocation approach and manifest the validity. Simulation results comparing the performance of the proposed GSA with that of traditional genetic algorithms are presented in the context of task assignment in IMA systems. 展开更多
关键词 avionics system engineering integrated modular avionics （IMA） resource allocation hierarchical scheduling genetic algorithm （GA） simulated annealing algorithm.
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Simultaneous optimization of heat-integrated crude oil distillation systems 认领 引用 被引量：5
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作者 罗祎青 王丽雯 +1 位作者 王赫 袁希钢 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第9期1518-1522,共5页
Crude oil distillation is important in refining industry. Operating variables of distillation process have a critical effect on product output value and energy consumption. However, the objectives of minimum energy co... Crude oil distillation is important in refining industry. Operating variables of distillation process have a critical effect on product output value and energy consumption. However, the objectives of minimum energy consumption and maximum product output value do not coordinate with each other and do not lead to the maximum economic benefit of a refinery. In this paper, a systematic optimization approach is proposed for the maximum annual economic benefit of an existing crude oil distillation system, considering product output value and energy consumption simultaneously. A shortcut model in Aspen Plus is used to describe the crude oil distillation and the pinch analysis is adopted to identify the target of energy recovery. The optimization is a nonlinear programming problem and solved by stochastic algorithm of particle warm optimization. 展开更多
关键词 Crude oil distillation Annual economic benefit Energy optimization Particle warm optimization System engineering
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A systematic approach for synthesizing a low-temperature distillation system 认领 引用 被引量：4
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作者 Yiqing Luo Liang Kong Xigang Yuan 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第5期789-795,共7页
In this paper, by combining a stochastic optimization method with a refrigeration shaft work targeting method,an approach for the synthesis of a heat integrated complex distillation system in a low-temperature process... In this paper, by combining a stochastic optimization method with a refrigeration shaft work targeting method,an approach for the synthesis of a heat integrated complex distillation system in a low-temperature process is presented. The synthesis problem is formulated as a mixed-integer nonlinear programming(MINLP) problem,which is solved by simulated annealing algorithm under a random procedure to explore the optimal operating parameters and the distillation sequence structure. The shaft work targeting method is used to evaluate the minimum energy cost of the corresponding separation system during the optimization without any need for a detailed design for the heat exchanger network(HEN) and the refrigeration system(RS). The method presented in the paper can dramatically reduce the scale and complexity of the problem. A case study of ethylene cold-end separation is used to illustrate the application of the approach. Compared with the original industrial scheme, the result is encouraging. 展开更多
关键词 Energy System engineering Low-temperature distillation system Process synthesis Distillation sequence Shaft work target
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The System Analysis and Reliability Evaluation of Rock Slopes 认领 引用
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作者 Luo Guoyu and Yan ChanghongDepartment of Earth Sciences, Nanjing University, Nanjing, Jiangsu Fei Zhenbi 《Acta Geologica Sinica(English Edition)》 SCIE CAS 1994年第4期451-464,共14页
The principal of preferred plane analysis is a new research view and model of rock slope engineering geology. It advocates that the rock slope stability, boundary conditions and failure model are controlled by preferr... The principal of preferred plane analysis is a new research view and model of rock slope engineering geology. It advocates that the rock slope stability, boundary conditions and failure model are controlled by preferred planes. Therefore, the problem of slope stability evaluation can be converted into the search for preferred planes and determination of preferred separating bodies. The organic combination of the deterministic model and the indeterministic model can be realized by applying the systems engineering principle and the research model and method of reliability analysis in the quantitative evaluation and prediction of rock slope stability. Finally, the paper presents the case studies of slopes of the Yangtze Gorge Project and the Ma'anshan openpit mine. 展开更多
关键词 preferred plane failure model system engineering analysis reliability evaluation extent of damage
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