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Policy entry points for facilitating a transition towards a low-carbon electricity future

《工程管理前沿（英文）》   页码 462-472 doi: 10.1007/s42524-022-0214-4

摘要： This study extends the ambit of the debate on electricity transition by specifically identifying possible policy entry points through which transformative and enduring changes can be made in the electricity and socio–economic systems to facilitate the transition process. Guided by the “essence” of the multi-level perspective — a prominent framework for the study of energy transition, four such entry points have been identified: 1) destabilising the dominant, fossil fuel-based electricity regime to create room for renewable technologies to break through; 2) reconfiguring the electricity regime, which encompasses technology, short-term operational practices and long-term planning processes, to improve flexibility for accommodating large outputs from variable renewable sources whilst maintaining supply security; 3) addressing the impact of coal power phase-out on coal mining regions in terms of economic development and jobs; and 4) facilitating a shift in transition governance towards a learning-based, reflexive process. Specific areas for policy interventions within each of these entry points have also been discussed in the paper.

关键词： electricity transition     multi-level perspective     policy entry points    

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Finding buckling points for nonlinear structures by dynamic relaxation scheme

Mohammad REZAIEE-PAJAND, Hossein ESTIRI

《结构与土木工程前沿（英文）》 2020年 第14卷 第1期   页码 23-61 doi: 10.1007/s11709-019-0549-z

摘要： Dynamic Relaxation Method (DRM) is an explicit approach for solving the simultaneous systems of equations. In this tactic, the fictitious mass and damping are added to the static governing equations, and an artificial dynamic system is constructed. By using DRM for nonlinear analysis, the structural static equilibrium path is obtained. This outcome is extremely valuable, since it leads to the behavior of structures. Among the finding related to the structural static path are the critical and buckling points for nonlinear structures. In this paper, a new way for calculating the load factor is proposed by setting the external work zero. Mixing the dynamic relaxation scheme with external work technique has not been formulated so far. In all incremental-iterative methods, the load factor increment sign should be determinated by extra calculations. This sign leads to increase or decrease of the load increment. It is worth emphasizing that sign of the load factor increment changes at the load limit points. Therefore, the sign determinations are required in the common work control methods. These disadvantages are eliminated in the proposed algorithm. In fact, the suggested load factor depends only on the Dynamic Relaxation (DR) fictitious parameters. Besides, all DR calculations are performed via vector operation. Moreover, the load factor is calculated only by one formula, and it has the same relation in the all solution processes. In contrast to the arc length techniques, which requires the sign determined, the proposed scheme does not need any sign finding. It is shown that author’s technique is quicker than the other dynamic relaxation strategies. To prove the capability and efficiency of the presented scheme, several numerical tests are performed. The results indicate that the suggested approach can trace the complex structural static paths, even in the snap-back and snap-through parts.

关键词： load factor     external work     dynamic relaxation     static equilibrium path     large displacement    

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我国汽车工业如何迎接WTO

金履忠

《中国工程科学》 2000年 第2卷 第8期   页码 18-24

摘要：

文章指出，我国轿车工业形势严峻及其原因。为迎接WTO，要从实际出发，不同汽车类别，采取不同对策：要大力改进农用车；大力开发微型车这个现实存在的、潜在的广大市场；抓紧新型电动汽车的开发；增强国有巨型汽车企业中低档轿车的自主开发能力，提高其国际竞争力；放宽政策引进外资，发展中高档及高档轿车。使占汽车产量的绝大多数、适合广大城乡人民需要的汽车生产，掌握在有自主知识产权的民族工业手里。

关键词： 汽车工业     迎接WTO     对策    

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Architecture design of Exit-Entry Administration Building of Shanghai Municipal Public Security Bureau

JIANG Limin, JIANG Du

《结构与土木工程前沿（英文）》 2007年 第1卷 第2期   页码 234-239 doi: 10.1007/s11709-007-0029-8

摘要： In retrospect of the architecture design of Exit-Entry Administration Building of Shanghai Municipal Public Security Bureau, this paper elaborates on the architect s pursuit of the symbol of the image, the fluidity of the space and the sequence of the function. It promotes a case which deals with the harmony of the architecture individuality and the urban space commonness in city center.

关键词： commonness     retrospect     sequence     architecture individuality     architect    

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Cusp points and assembly changing motions in the PRR-PR-PRR planar parallel manipulator

《机械工程前沿（英文）》 2023年 第18卷 第2期 doi: 10.1007/s11465-022-0743-x

摘要： Most parallel manipulators have multiple solutions to the direct kinematic problem. The ability to perform assembly changing motions has received the attention of a few researchers. Cusp points play an important role in the kinematic behavior. This study investigates the cusp points and assembly changing motions in a two degrees of freedom planar parallel manipulator. The direct kinematic problem of the manipulator yields a quartic polynomial equation. Each root in the equation determines the assembly configuration, and four solutions are obtained for a given set of actuated joint coordinates. By regarding the discriminant of the repeated roots of the quartic equation as an implicit function of two actuated joint coordinates, the direct kinematic singularity loci in the joint space are determined by the implicit function. Cusp points are then obtained by the intersection of a quadratic curve and a cubic curve. Two assembly changing motions by encircling different cusp points are highlighted, for each pair of solutions with the same sign of the determinants of the direct Jacobian matrices.

关键词： planar parallel manipulator     assembly changing motions     cusp points     quartic polynomial     discriminant of repeated roots    

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Prediction of the flash points of alkanes by group bond contribution method using artificial neural networks

PAN Yong, JIANG Juncheng, WANG Zhirong

《化学科学与工程前沿（英文）》 2007年 第1卷 第4期   页码 390-394 doi: 10.1007/s11705-007-0071-z

摘要： A group bond contribution model using artificial neural networks, which had the high ability of nonlinear of prediction, was established to predict the flash points of alkanes. This model contained not only the information of group property but also connectivity in molecules. A set of 16 group bonds were used as input parameters of neural networks to study the correlation of molecular structures with flash points of 44 alkanes. The results showed that the predicted flash points were in good agreement with the experimental data that the absolute mean absolute error was 6.9 K and the absolute mean relative error was 2.29%, which were superior to those of traditional group contribution methods. The method can be used not only to reveal the quantitative correlation between flash points and molecular structures of alkanes but also to predict the flash points of organic compounds for chemical engineering.

关键词： information     nonlinear     quantitative correlation     superior     molecular    

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新型无煤柱自成巷开采成套技术与案例研究 Article

张星宇, 何满潮, 杨军, 王二雨, 张家宾, 孙跃

《工程（英文）》 2020年 第6卷 第11期   页码 1315-1329 doi: 10.1016/j.eng.2020.01.014

摘要：

本文介绍了无煤柱自成巷煤炭开采成套技术，旨在减少地下煤炭资源的浪费和矿井巷道的开挖。通过三类关键技术的相互配合，该开采技术实现了沿空巷道的自动留设，进而实现无煤柱开采。其中，恒阻大变形支护（constant-resistance large deformation support, CRLD）保证了留设巷道的顶板稳定性，定向预裂爆破（directional presplitting blasting, DPB）分割了巷道和采空区间的顶板联系，挡矸系统支护（blocking-gangue support system, BGSS）整合了采空区内垮落的岩体材料，以形成有效巷帮。通过工业性试验，验证了这三类关键技术的工程效果。现场应用结果表明：由于垮落岩体的碎胀支撑特性，留设巷道将处于卸压环境下。在经历短暂的动压影响之后，留设巷道逐渐稳定，稳定之后的巷道可满足煤矿安全生产要求。本文的研究结果论证了该开采技术具有良好的工程应用性。根据所提出的设计原则，因地制宜，无煤柱自成巷开采技术可在井工煤矿进行大规模推广。

关键词： 无煤柱开采     巷道支护     沿空成巷     岩石工程     工业试验    

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Analysis of the current situation of environmental policy of China and establishment of distributed environmentalpolicy framework

Chaoyang FU,Wangfeng LI

《环境科学与工程前沿（英文）》 2015年 第9卷 第2期   页码 310-316 doi: 10.1007/s11783-014-0658-9

摘要： In this study, China’s current macro-environmental policies as well as their implementation and management tools are analyzed. By using the basic economic methodology, detailed studies are conducted focusing on the implementation effect of contemporary China’s typical environmental policy of the total pollutant discharge quantity control type, and also the two types of environmental management tools are compared from the perspective of implementation costs and policy uncertainty. By introduction of distributed management tools into the implementation of environmental policies, market-oriented means and the methods of economic analysis are introduced into environmental policy decision-making mechanisms, which could afford a new method for changing the current relatively low efficiency of environmental policy, solving the problem of “government failure” in environmental policy implementation, and providing a new way to make environmental policy system more flexible and more efficient. It is of great practical significance to solve China's current structural, complex and accumulative environmental problems.

关键词： environmental policy     distributed environment policy     distributed parameter model     lumped parameter model    

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China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

《能源前沿（英文）》 2023年 第17卷 第3期   页码 400-411 doi: 10.1007/s11708-023-0862-z

摘要： Carbon capture, utilization, and storage (CCUS) is estimated to contribute substantial CO2 emission reduction to carbon neutrality in China. There is yet a large gap between such enormous demand and the current capacity, and thus a sound enabling environment with sufficient policy support is imperative for CCUS development. This study reviewed 59 CCUS-related policy documents issued by the Chinese government as of July 2022, and found that a supporting policy framework for CCUS is taking embryonic form in China. More than ten departments of the central government have involved CCUS in their policies, of which the State Council, the National Development and Reform Commission (NDRC), the Ministry of Science and Technology (MOST), and the Ministry of Ecological Environment (MEE) have given the greatest attention with different focuses. Specific policy terms are further analyzed following the method of content analysis and categorized into supply-, environment- and demand-type policies. The results indicate that supply-type policies are unbalanced in policy objectives, as policy terms on technology research and demonstration greatly outnumber those on other objectives, and the attention to weak links and industrial sectors is far from sufficient. Environment-type policies, especially legislations, standards, and incentives, are inadequate in pertinence and operability. Demand-type policies are absent in the current policy system but is essential to drive the demand for the CCUS technology in domestic and foreign markets. To meet the reduction demand of China’s carbon neutral goal, policies need to be tailored according to needs of each specific technology and implemented in an orderly manner with well-balanced use on multiple objectives.

关键词： carbon capture     utilization     and storage (CCUS)     policy     content analysis     China    

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Hierarchical methodological framework to improve Policy Environmental Assessment: Based on policy layer

Yinglie ZHOU, Cunkuan BAO,

《环境科学与工程前沿（英文）》 2010年 第4卷 第1期   页码 82-90 doi: 10.1007/s11783-010-0004-9

摘要： This study explores the current implementation challenges of the Policy Environmental Assessment (PEA), including the implementation of a far richer, more diverse (at macro level), and better understanding of PEA and integration with decision making. The results contribute to the analysis of PEA through different hierarchies of assessment. Stemming from the theory and practice of policy, a concept of PEA hierarchies is proposed including the uppermost PEA, upper-lower PEA, and lowermost PEA. Afterward, the differences of the three hierarchies are interpreted, in terms of aims, principles, processes, and methods. The evaluation of the policy environmental impacts from different lens helps solve the complexities of policies and identify opportunities for improvement of PEA.

关键词： Policy Environmental Assessment (PEA)     policy hierarchy     PEA hierarchy     methodological framework    

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Translating evidence into policy in China: opportunities and challenges

Jiyao Wang, Xuejuan Jin

《医学前沿（英文）》 2011年 第5卷 第3期   页码 315-320 doi: 10.1007/s11684-011-0146-6

摘要： Research and evidence are critical for the formulation of policies and practices in support of health care. In the past two decades, the Chinese Clinical Epidemiology Network has been promoting evidence-based policy making in China. Evidence-based policy has become a major part of the government’s approach to policy making. The current article addresses the translation of evidence into health policies based on the expansion of evidence-based medicine in China. It also discusses the opportunities and challenges for certain evidence to be considered in policy making and practice in the future.

关键词： clinical epidemiology     evidence-based decision making     policy    

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中国载人航天“飞船起步”的战略思考

赵少奎

《中国工程科学》 2004年 第6卷 第2期   页码 8-12

摘要：

对我国载人航天的概念研究、技术途径论证，以及中国载人航天发展的战略思考和“飞船起步”的决策过程进行了分析与小结,提出了我国发展现代宏大工程应站在国家发展的全局上进行深层次的战略思考。

关键词： 中国载人航天     飞船     技术途径     战略思考    

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Moving policy and regulation forward for single-use plastic alternatives

《环境科学与工程前沿（英文）》 2021年 第15卷 第3期 doi: 10.1007/s11783-021-1423-5

摘要： Single-use plastics are often used once or cannot be reused for extended periods. They are widely consumed with the rapid development of social economy. The waste generated by single-use plastics threatens ecosystem health by entering the environment and ultimately restricts sustainable human development. The innovation of sustainable and environmentally friendly single-use plastic alternative materials and the joint participation of governments, enterprises and the public are promising technologies and management approaches that can solve the problem of single-use plastics wastes. The development of single-use plastic alternative products can be promoted fundamentally only by improving relevant legislation and standards, providing differentiated industrial policies, encouraging scientific and technological innovation and expanding public participation.

关键词： Single-use plastic alternatives     Policy     Regulation     Sustainable development    

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Towards the sustainable intensification of agriculture—a systems approach to policy formulation

Leslie G. FIRBANK

《农业科学与工程前沿（英文）》 2020年 第7卷 第1期   页码 81-89 doi: 10.15302/J-FASE-2019291

摘要：

The sustainable intensification of agriculture involves providing sufficient food and other ecosystem services without going beyond the limits of the earth’s system. Here a project management approach is suggested to help guide agricultural policy to deliver these objectives. The first step is to agree measurable outcomes, integrating formal policy goals with the often much less formal and much more diverse goals of individual farmers. The second step is to assess current performance. Ideally, this will involve the use of farm-scale metrics that can feed into process models that address social and environmental domains as well as production issues that can be benchmarked and upscaled to landscape and country. Some policy goals can be delivered by supporting ad hoc interventions, while others require the redesign of the farming system. A pipeline of research, knowledge and capacity building is needed to ensure the continuous increase in farm performance. System models can help prioritise policy interventions. Formal optimization of land use is only appropriate if the policy goals are clear, and the constraints understood. In practice, the best approach may depend on the scale of action that is required, and on the amount of resource and infrastructure available to generate, implement and manage policy.

关键词： agricultural policy     ecosystem services     indicators of sustainable intensification     knowledge exchange     land use optimization    

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Agriculture Green Development in China and the UK: common objectives and converging policy pathways

Yuelai LU, David NORSE, David POWLSON

《农业科学与工程前沿（英文）》 2020年 第7卷 第1期   页码 98-105 doi: 10.15302/J-FASE-2019298

摘要：

This paper has three aims. First, to examine how the negative environmental consequences of intensive agriculture have driven China and the UK to shift away from narrowly focused farm output policies and adopt more holistic green development pathways. Second, to explore the policy objectives they have in common. Third, to assess the numerous opportunities for joint research and knowledge sharing through the Sustainable Agriculture Innovation Network and other existing institutional mechanisms. The intensification of agricultural production in the UK started several decades earlier than in China as did the negative environmental consequences of the farm practices. However, their strategies and policies for sustainable intensification and green development have much in common. These are set out in two main documents: the Chinese State Council guidelines for green agriculture and the UK Department for Environment, Food and Rural Affairs 25 Year Environment Plan. There are substantial mutual advantages from greater collaboration on problem identification and monitoring; the development of appropriate technological and management responses and the formulation of sound policies. To achieve this potential, it is recommended that further thought be given to how best to bring together all of the key stakeholders along the whole food chain.

关键词： Agriculture Green Development     China     policy     UK    

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标题 作者 时间 类型 操作

Policy entry points for facilitating a transition towards a low-carbon electricity future

期刊论文

Finding buckling points for nonlinear structures by dynamic relaxation scheme

Mohammad REZAIEE-PAJAND, Hossein ESTIRI

期刊论文

我国汽车工业如何迎接WTO

金履忠

期刊论文

Architecture design of Exit-Entry Administration Building of Shanghai Municipal Public Security Bureau

JIANG Limin, JIANG Du

期刊论文

Cusp points and assembly changing motions in the PRR-PR-PRR planar parallel manipulator

期刊论文

Prediction of the flash points of alkanes by group bond contribution method using artificial neural networks

PAN Yong, JIANG Juncheng, WANG Zhirong

期刊论文

新型无煤柱自成巷开采成套技术与案例研究

张星宇, 何满潮, 杨军, 王二雨, 张家宾, 孙跃

期刊论文

Analysis of the current situation of environmental policy of China and establishment of distributed environmentalpolicy framework

Chaoyang FU,Wangfeng LI

期刊论文

China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

期刊论文

Hierarchical methodological framework to improve Policy Environmental Assessment: Based on policy layer

Yinglie ZHOU, Cunkuan BAO,

期刊论文

Translating evidence into policy in China: opportunities and challenges

Jiyao Wang, Xuejuan Jin

期刊论文

中国载人航天“飞船起步”的战略思考

赵少奎

期刊论文

Moving policy and regulation forward for single-use plastic alternatives

期刊论文

Towards the sustainable intensification of agriculture—a systems approach to policy formulation

Leslie G. FIRBANK

期刊论文

Agriculture Green Development in China and the UK: common objectives and converging policy pathways

Yuelai LU, David NORSE, David POWLSON

期刊论文