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Sustainability performance analysis of environment innovation systems using a two-stage network DEA model with shared

《工程管理前沿（英文）》页码 425-438 doi: 10.1007/s42524-022-0205-5

摘要： The term environmental innovation system refers to an innovation network composed of enterprises, universities, and research institutions involved in the development and diffusion of environmental technology, with the participation of a government. An environmental innovation system not only exerts important impact on the achievement of carbon neutrality but also affects social and economic activities. Investigations on environmental innovation system performance constantly assume a single-stage independent system while ignoring its internal structure. However, such systems are composed of environmental innovation research and development (R&D) and environmental innovation conversion subsystems. A two-stage data envelopment analysis (DEA) model is developed in this study to analyze the efficiency of Chinese regional environmental innovation system by opening the “black box” and considering shared resources. Empirical results indicated that China presents high overall environmental innovation efficiency although some regions need to improve. Regions with low efficiencies in both environmental innovation R&D (EIR) and environmental innovation conversion (EIC) subsystems should expand their investment in and strengthen the management of environmental innovation resources. Regions with low EIR efficiency should improve the absorption and transformation of environmental innovation achievements. Regions with low EIC efficiency should increase investment in the commercialization of environmental innovation achievements and encourage green economy industries, such as new energy, art, tourism, and environmental protection.

关键词： data envelopment analysis environmental efficiency environmental innovation system shared resources two-stage structure

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Construction of a shared system-based real-world clinical research system

null

《医学前沿（英文）》 2014年第8卷第3期页码 382-388 doi: 10.1007/s11684-014-0368-5

摘要：

Hubei Provincial Hospital of Traditional Chinese Medicine established research outpatient clinics to contribute to the major disease-entity research conducted by the National Traditional Chinese Medicine Clinical Research Base and to the construction of the National Traditional Chinese Medicine Treatment and Clinical Research Information Sharing System. With a view of developing a “real-world traditional Chinese medicine clinical research paradigm,” these clinics explored the mode of constructing research outpatient clinics from the aspects of clinical research, health management, and characteristics diagnosis and treatment.

关键词： clinical research shared system real world research outpatient clinic research hospital

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Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

《工程管理前沿（英文）》 2020年第7卷第2期页码 259-274 doi: 10.1007/s42524-019-0080-x

摘要： Unreasonable allocation of shared resources reduces the system efficiency and is a considerable operational risk. Sub-processes with insufficient portion of shared resources could not help accomplish complicated tasks, and overstaffing and idle resources will occur in the sub-processes assigned with redundant shared resources. This unfair portion distribution may cause internal contradictions among sub-processes and even lead to the collapsing of the entire system. This study proposes a data-driven, mixed two-stage network data envelopment analysis model. This method aims to reasonably define the allocation portion of shared extra intermediate resources among several nonhomogeneous subsystems and measure the overall system performance. A data set of 58 international hotels is used to test the features of the proposed model.

关键词： shared resource allocation mixed two-stage system data envelopment analysis efficiency

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能源革命推动西南地区共享发展战略研究

马洪琪,李伟起,迟福东

《中国工程科学》 2021年第23卷第1期页码 86-91 doi: 10.15302/J-SSCAE-2021.01.015

摘要：

西南地区是打赢精准脱贫攻坚战、实施生态保护战略的重点区域，区域内水能、天然气资源极为丰富，也是支撑“西电东送”“西气东输”的重要区域；鉴于能源资源禀赋特征差异较大且能源品种互补，推进区域内能源共享发展是西南地区能源革命的重大内容。本文将能源革命与西南地区区域发展战略相结合，分析了能源革命推动西南地区共享发展的内涵，论述了西南地区能源革命的战略定位与目标。研究提出，能源革命推动西南地区共享发展的举措重在：推进天燃气基础设施建设，推进煤炭高效开发与清洁化利用，合理制定水电开发时序，推进风光水多元化开发利用；在后续发展方面，完善水电消纳机制，打破区域壁垒，实施针对性财税政策，资源和资本多元化并重，加强环境保护，注重高端智库建设与人才引进。

关键词：能源革命西南地区共享发展清洁能源消纳

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基于MCMC稳态模拟的Weibull共享异质性模型及其可靠性应用

林静,韩玉启,朱慧明

《中国工程科学》 2006年第8卷第2期页码 55-60

摘要：

针对传统假设中个体寿命独立同分布的不足，构建了贝叶斯Weibull共享异质性模型，提出了对寿命服从Weibull分布的产品，运用基于Gibbs抽样的马尔可夫链蒙特卡罗（Markov chain Monte Carlo，MCMC）方法动态模拟出参数后验分布的马尔可夫链，在异质性因子的先验分布为Gamma分布时，给出随机截尾条件下，参数在Weibull共享异质性模型中的贝叶斯估计，提高了计算的精度。借助数据仿真说明了利用WinBUGS（Bayesian inference using Gibbs sampling）软件包进行建模分析的过程，证明了该模型在可靠性应用中的直观性与有效性。

关键词：贝叶斯分析可靠性 MCMC模拟 Gibbs抽样 Weibull分布共享异质性模型

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面向未来智慧城市的汽车共享出行发展战略

陈轶嵩,赵俊玮,刘永涛

《中国工程科学》 2019年第21卷第3期页码 114-121 doi: 10.15302/J-SSCAE-2019.03.009

摘要：

本文分析了当前汽车共享出行的发展环境、发展趋势与发展机遇，梳理了汽车共享出行与智慧城市之间的共生关系。对我国汽车共享出行的典型发展模式进行分析、实践经验进行总结，从新技术、新需求以及新模式三个维度阐述了汽车共享出行发展的新理念。在此基础上，提出了我国汽车共享出行创新发展的五种典型路径，基于发展路径对我国未来智慧城市汽车共享出行生态进行了构想。

关键词：智慧城市共享出行发展模式路径分析生态构想

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具有高隔离度的毫米波平面双极化共口径阵列天线 Correspondence

曹羽艳1,郭子均1,郝张成1,2,3

《信息与电子工程前沿（英文）》 2022年第23卷第10期页码 1568-1578 doi: 10.1631/FITEE.2200122

摘要：

本文提出并设计了一种毫米波平面共口径阵列天线。通过集成基板集成波导（SIW）和带状线激励网络，将K波段天线嵌入至Ka波段天线内部。通过共享辐射口径减小天线尺寸，降低其剖面高度。所设计的Ka波段天线通过SIW腔体表面的一对平行缝隙辐射水平极化波，而K波段天线通过SIW腔体表面的蝴蝶结形缝隙辐射垂直极化波。两个波段的阵列天线可以共享物理口径进行辐射，且在两个频段都具有很好的隔离度。为了验证以上设计思想，我们设计了一款中心工作频率为19 GHz和30 GHz的8×8共口径阵列天线，并采用多层印刷电路板（PCB）技术进行加工制造。实测结果表明，该天线在K波段和Ka波段的−10 dB阻抗带宽分别为7.73%和大于20%，相应的隔离度分别高于60 dB和44 dB。所提出的共口径天线具有小尺寸、低剖面和高隔离度的优点，可应用于小型化毫米波无线通信系统。

关键词：共口径；平面天线；高隔离度；基片集成波导

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System reliability and system resilience

《工程管理前沿（英文）》 2021年第8卷第4期页码 615-619 doi: 10.1007/s42524-021-0176-y

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工程工程系统工程系统论与工程科学体系

王连成

《中国工程科学》 2001年第3卷第6期页码 15-18

摘要：

从分析工程的基本内容、性质和特征人手，引出了工程系统的概念，接着应用一般系统论思想讨论了工程系统论的研究对象和研究方法，并论述了它在整个工程科学体系中的元学科地位。

关键词：工程系统系统论学科

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Cyber–Physical Power System (CPPS): A review on measures and optimization methods of system resilience

《工程管理前沿（英文）》 2021年第8卷第4期页码 503-518 doi: 10.1007/s42524-021-0163-3

摘要： The Cyber–Physical Power System (CPPS) is one of the most critical infrastructure systems in a country because a stable and secure power supply is a key foundation for national and social development. In recent years, resilience has become a major topic in preventing and mitigating the risks caused by large-scale blackouts of CPPSs. Accordingly, the concept and significance of CPPS resilience are at first explained from the engineering perspective in this study. Then, a review of representative quantitative assessment measures of CPPS resilience applied in the existing literature is provided. On the basis of these assessment measures, the optimization methods of CPPS resilience are reviewed from three perspectives, which are mainly focused on the current research, namely, optimizing the recovery sequence of components, identifying and protecting critical nodes, and enhancing the coupling patterns between physical and cyber networks. The recent advances in modeling methods for cascading failures within the CPPS, which is the theoretical foundation for the resilience assessment and optimization research of CPPSs, are also presented. Lastly, the challenges and future research directions for resilience optimizing of CPPSs are discussed.

关键词： Cyber–Physical Power System resilience assessment resilience optimization cascading failure modeling

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Discussion on the System Optimization of the Energy Development Strategy and Plan

Da-di Zhou

《工程管理前沿（英文）》 2014年第1卷第2期页码 147-152 doi: 10.15302/J-FEM-2014022

摘要： Energy is an important basis for economic and social development, and is a critical economic sector. Due to the complexity of the energy system, the interactive relationship with economic and social development, and the enormous investment involved, the optimization of the energy system is of great significance. We should make efforts to develop targets and specific approaches for the rational and optimal development of an energy system in order to avoid big losses due to systematic mistakes.

关键词： energy development strategy planning system system optimization

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Distributed monitoring and diagnosis system for hydraulic system of construction machinery

Xiaohu CHEN, Wenfeng WU, Hangong WANG, Yongtao ZHOU,

《机械工程前沿（英文）》 2010年第5卷第1期页码 106-110 doi: 10.1007/s11465-009-0089-7

摘要： This paper mainly presents a distributed monitoring and diagnosis system for the hydraulic system of construction machinery based on the controller area net (CAN) field bus. The hardware of the distributed condition monitoring and fault diagnosis system is designed. Its structure including the sensors, distributed data acquisition units, central signal processing unit, and CAN field bus is introduced. The software is also programmed. The general software design and its realization are studied in detail. The experiments and applications indicate that the distributed condition monitoring and fault diagnosis system can effectively realize its function of real-time online condition monitoring and fault diagnosis for the hydraulic system of construction machinery.

关键词： construction machinery hydraulic system distributed condition monitoring controller area net (CAN) field bus fault diagnosis

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Theory and method of mechanism system design

Huijun ZOU, Qinghua LIANG, Qing ZHANG

《机械工程前沿（英文）》 2010年第5卷第4期页码 399-411 doi: 10.1007/s11465-010-0116-8

摘要： Conceptual design is the most critical and creative phase of design. Recently, increasing attention has been directed to supporting conceptual-level computer aided creative design and its theories and methodologies. Specifically, for conceptual design of mechanical products, this paper presents a novel function solving model for mechanical product design and highlights the importance of systematic synthesis to achieve creative design. Then it builds a framework as a function-effect-process-action- mechanisms (FEPAM) mapping process, which enables creative design on the basis of conceiving different action schemes. After that, several key points are elaborated including 1) representing and decomposition methods of functions and motion behaviors; 2) action scheme representing method based on network plan techniques; and 3) variation and creation methods based on action scheme transformations.

关键词： mechanism system creative design process model function solving model process action procedure mechanisms knowledge base principle of mechanism system composition

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Dynamic contribution of variable-speed wind energy conversion system in system frequency regulation

Yajvender Pal VERMA, Ashwani KUMAR

《能源前沿（英文）》 2012年第6卷第2期页码 184-192 doi: 10.1007/s11708-012-0185-y

摘要： Frequency regulation in a generation mix having large wind power penetration is a critical issue, as wind units isolate from the grid during disturbances with advanced power electronics controllers and reduce equivalent system inertia. Thus, it is important that wind turbines also contribute to system frequency control. This paper examines the dynamic contribution of doubly fed induction generator (DFIG)-based wind turbine in system frequency regulation. The modified inertial support scheme is proposed which helps the DFIG to provide the short term transient active power support to the grid during transients and arrests the fall in frequency. The frequency deviation is considered by the controller to provide the inertial control. An additional reference power output is used which helps the DFIG to release kinetic energy stored in rotating masses of the turbine. The optimal speed control parameters have been used for the DFIG to increases its participation in frequency control. The simulations carried out in a two-area interconnected power system demonstrate the contribution of the DFIG in load frequency control.

关键词： doubly fed induction generator (DFIG) load frequency control inertial control wind energy conversion system (WECS)

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Load frequency control in deregulated power system with wind integrated system using fuzzy controller

Yajvender Pal VERMA, Ashwani KUMAR

《能源前沿（英文）》 2013年第7卷第2期页码 245-254 doi: 10.1007/s11708-012-0218-6

摘要： This paper presents the analysis of load frequency control (LFC) of a deregulated two-area hydro-thermal power system using fuzzy logic controller, with doubly fed induction generators (DFIGs) integrated into both the control areas. The deregulation of power sector has led to the formation of new companies for generation, transmission and distribution of power. The conventional two-area power system is modified to study the effects of the bilateral contracts of companies on the system dynamics. Deregulation creates highly competitive and distributed control environment, and the LFC becomes even more challenging when wind generators are also integrated into the system. The overall inertia of the system reduces, as the wind unit does not provide inertia and isolates from the grid during disturbances. The DFIGs integrated provide inertial support to the system through modified inertial control scheme, and arrests the initial fall in frequency after disturbance. The inertial control responds to frequency deviations, which takes out the kinetic energy of the wind turbine for improving the frequency response of the system. To enhance the participation of the doubly fed induction generator (DFIG) in the frequency control, optimal values of the speed control parameters of the DFIG-based wind turbine have been obtained using integral square error (ISE) technique. The dynamics of the system have been obtained for a small load perturbation, and for contract violation using fuzzy controller.

关键词： frequency regulation fuzzy controller de-regulated power system doubly fed induction generator (DFIG) bilateral contract