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Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

《结构与土木工程前沿（英文）》 2009年第3卷第2期页码 111-116 doi: 10.1007/s11709-009-0022-5

摘要： In this paper, a novel “composite reaching law” was explained in details: 1) the equation of discrete motion for a control system; 2) the design of discrete-time variable structure control. In addition, the model of a three-storey shear-type building structure was used to verify the effectiveness of the discrete variable structure control method. The results of numerical example analysis of the model show that the control law can effectively reduce the peak value of seismic response of the building structure and the chattering effect of the control system.

关键词： discrete-time variable structure control composite reaching law chattering effect saturated control law

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Human pangenome: far-reaching implications in precision medicine

《医学前沿（英文）》 doi: 10.1007/s11684-023-1039-1

摘要： Human pangenome: far-reaching implications in precision medicine

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分形方法导出改进的牛顿第二定律及万有引力定律

付昱华

《中国工程科学》 2003年第5卷第6期页码 55-58

摘要：

牛顿第二定律及万有引力定律是根据实验结果总结出来的。为了探讨从理论上导出这两个定律的可能性，根据能量守恒定律，给出用变维分形方法针对一个实例（小球沿长斜面滚下）导出改进的牛顿第二定律及万有引力定律的方法。具体给出了适用于实例的常维分形结果：改进的万有引力定律F=-GMm / r^1.99989和改进的牛顿第二定律F=ma^1.01458。

关键词：分形方法牛顿第二定律万有引力定律理论推导

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How did Archimedes discover the law of buoyancy by experiment?

Hidetaka KUROKI

《机械工程前沿（英文）》 2016年第11卷第1期页码 26-32 doi: 10.1007/s11465-016-0368-z

摘要：

After Archimedes and Vitruvius era, for more than 2000 years, it has been believed that the displaced water measurement of golden crown is impossible, and at his Eureka moment, Archimedes discovered the law of buoyancy (Proposition 7 of his principles) and proved the theft of a goldsmith by weighing the golden crown in water.

A previous study showed that a small amount of displaced water was able to be measured with enough accuracy by the introduced method. Archimedes measured the weight of displaced water. He did not find the law of buoyancy but rather specific gravity of things at the moment.

After which, Archimedes continued to measure the specific gravity of various solids and fluids. Through these measurements, he reached the discovery of the law of buoyancy directly by experiment. In this paper, the process to the discovery of Archimedes’ principle (Proposition 5) is presented.

关键词： Archimedes’ principle buoyancy specific gravity Eureka Vitruvius displaced water balance floating body

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新型碳酚醛材料动静态力学性能和本构关系研究

张泰,王肖钧,王志海,郭扬,王元博

《中国工程科学》 2006年第8卷第5期页码 63-68

摘要：

研究了碳纤维增强酚醛复合材料在不同温度下的动静态压缩力学性能，碳酚醛材料不但是应变率敏感材料，也是温度相关材料；提出了一个非线性粘弹性本构方程，通过对实验应力-应变曲线的拟合给出了本构方程的材料参数，讨论了温度对本构方程参数的影响；分析了材料力学行为的时温等效性，给出了不同加载条件下的时温等效曲线。

关键词：碳酚醛力学性能粘弹性本构模型时温等效

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China’s Ministry of Environmental Protection Adopted Draft Amendment to the Law on Prevention and Control

Fu Sun,Yi Liu

《环境科学与工程前沿（英文）》 2016年第10卷第6期 doi: 10.1007/s11783-016-0890-6

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Why does environmental compliance cost more than penalty? —A legal analysis on environmental acts of enterprises in China

DONG Hongwei

《环境科学与工程前沿（英文）》 2007年第1卷第4期页码 434-442 doi: 10.1007/s11783-007-0069-2

摘要： In the environmental protection field of China, due to lower law-breaking cost but higher law-abiding cost , it is a common case that the enterprise chooses to break through the law on purpose. The punishment to the unlawful pr

关键词： law-abiding punishment environmental protection law-breaking enterprise

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贯彻《节能法》推动节能工作

傅志寰

《中国工程科学》 2008年第10卷第12期页码 13-16

摘要：

近年来我国能源消费增长快、利用效率低的问题比较突出，原有《节能法》已经不能适应当前节能工作的要求。为了推动全社会的节约能源工作，全国人大今年修订了这部法律。文章介绍了修订后的《节能法》基本思路、主要内容和实施后的初步效果。

关键词：法律能源节约

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基于犹豫模糊决策矩阵的犹豫模糊多准则共识群决策方法 Article

Jie DING, Ze-shui XU, Hu-chang LIAO

《信息与电子工程前沿（英文）》 2017年第18卷第11期页码 1679-1692 doi: 10.1631/FITEE.1601546

摘要：群决策在管理决策和经济领域有着重要作用。本文建立了两种关于犹豫模糊多准则群共识决策的方法，并使用犹豫模糊决策矩阵（hesitant fuzzy decision matrices, HFDMs）表示专家的偏好。本文建立了两个新颖的、可应用于不同群决策环境的共识模型，其中共识决策过程包括：共识检验过程，共识达成过程和选择过程。专家以犹豫模糊集的方式表达自己的选择，然后通过集成算子计算每个准则下的犹豫模糊集。此外，基于两个专家在决策之间的偏差计算出任意两个犹豫模糊集之间的距离。本文建立了两种达成共识的方法，并提出了两种犹豫模糊多准则群决策方法的具体计算步骤。最后通过具体案例分析了苹果公司以旧换新的决策过程。该案例旨在让所有专家在进行选择决策之前达成高度共识，避免一些专家的偏好值过高或过低。通过共识测量修正的偏好信息可令决策结果更加合理。

关键词：多准则群决策；群共识；共识达成方法；犹豫模糊决策矩阵；集成算子

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First law-based thermodynamic analysis on Kalina cycle

ZHANG Ying, HE Maogang, JIA Zhen, LIU Xun

《能源前沿（英文）》 2008年第2卷第2期页码 145-151 doi: 10.1007/s11708-008-0021-6

摘要： Based on the first law of thermodynamics, and adopting the Peng-Robinson equation (P-R equation) as the basic equation for the properties of ammonia-water mixtures, a thermodynamic analysis on a single-stage distillation Kalina cycle is presented. A program to calculate the thermodynamic properties of ammonia-water mixtures, and that for calculating the performance of Kalina cycles, were developed, with which the heat-work conversion particulars of Kalina cycles were theoretically calculated. The influences on the cycle performance of key parameters, such as the pressure and temperature at the inlet of the turbine, the back pressure of the turbine, the concentration of the working solution, the concentration of the basic solution and the cycle multiplication ratio, were analyzed.

关键词： ammonia-water P-R single-stage distillation Peng-Robinson pressure

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Erratum to: Industrial water treatment and industrial marine outfalls: Achieving the right balance

Law, Chunyan Tang

《化学科学与工程前沿（英文）》 2017年第11卷第2期页码 290-290 doi: 10.1007/s11705-017-1639-x

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Performance analysis of combined cycle power plant

Nikhil DEV,Rajesh ATTRI

《能源前沿（英文）》 2015年第9卷第4期页码 371-386 doi: 10.1007/s11708-015-0371-9

摘要： Combined cycle power plants (CCPPs) are in operation with diverse thermodynamic cycle configurations. Assortment of thermodynamic cycle for scrupulous locality is dependent on the type of fuel available and different utilities obtained from the plant. In the present paper, seven of the practically applicable configurations of CCPP are taken into consideration. Exergetic and energetic analysis of each component of the seven configurations is conducted with the help of computer programming tool, i.e., engineering equation solver (EES) at different pressure ratios. For Case 7, the effects of pressure ratio, turbine inlet temperature and ambient relative humidity on the first and second law is studied. The thermodynamics analysis indicates that the exergy destruction in various components of the combined cycle is significantly affected by the overall pressure ratio, turbine inlet temperature and pressure loss in air filter and less affected by the ambient relative humidity.

关键词： first-law second-law exergy destruction components

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深刻认识汽车产业发展规律

付于武 ,陈秀敏

《中国工程科学》 2019年第21卷第3期页码 98-102 doi: 10.15302/J-SSCAE-2019.03.019

摘要：

汽车产业经过130 多年的沉淀，积累了不少全球业内普遍接受和认可的规律。当前，我国汽车产业正处于转型升级的战略机遇期，迫切需要提高对产业的认识，加强对产业发展规律的研究，避免浮躁、违背规律现象的出现。本文从技术、市场、人才等多个角度，尝试归纳了汽车产业发展中转型与升级相辅相成的关系、资金技术劳动密集的产业特性、创新与协同的必然要求等九大规律，以指导和推动我国汽车产业健康、可持续发展。

关键词：汽车产业发展规律可持续发展

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Technological development and engineering applications of novel steel-concrete composite structures

Jianguo NIE, Jiaji WANG, Shuangke GOU, Yaoyu ZHU, Jiansheng FAN

《结构与土木工程前沿（英文）》 2019年第13卷第1期页码 1-14 doi: 10.1007/s11709-019-0514-x

摘要：

In view of China’s development trend of green building and building industrialization, based on the emerging requirements of the structural engineering community, the development and proposition of novel resource-saving high-performance steel-concrete composite structural systems with adequate safety and durability has become a kernel development trend in structural engineering. This paper provides a state of the art review of China’s cutting-edge research and technologies in steel-concrete composite structures in recent years, including the building engineering, the bridge engineering and the special engineering. This paper summarizes the technical principles and applications of the long-span bi-directional composite structures, the long-span composite transfer structures, the comprehensive crack control technique based on uplift-restricted and slip-permitted (URSP) connectors, the steel plate concrete composite (SPCC) strengthen technique, and the innovative composite joints. By improving and revising traditional structure types, the comprehensive superiority of steel-concrete composite structures is well elicited. The research results also indicate that the high-performance steel-concrete composite structures have a promising popularizing prospect in the future.

关键词： high-performance composite structure bi-directional composite composite transfer uplift-restricted and slip-permitted connectors steel plate concrete composite strengthen

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Industrial water treatment and industrial marine outfalls: Achieving the right balance

Law,Chunyan Tang

《化学科学与工程前沿（英文）》 2016年第10卷第4期页码 472-479 doi: 10.1007/s11705-016-1592-0

摘要： Industrial water treatment and industrial marine outfalls both function together to reduce the pollutant concentrations in the effluent and mitigate the potential impact on the environment. The former uses environmental treatment technology with energy and material cost considerations, while the latter utilizes the natural assimilation potential of the coastal water environment achievable at the outfall location. Because of their synergistic nature, marine outfalls are now commonly used for the disposal of partially treated domestic and industrial effluents in many coastal cities around the world, with many successful examples of low and acceptable risks to the environment. The objective of this paper is to review their balance from both environmental and economic considerations. We also discuss the end-of-the-pipe and mixing zone approaches for industrial effluents, and give some recommendations particularly for developing countries. Finally, we emphasize that a compulsory and vigorous monitoring program is essential regardless of how the balance is achieved.

关键词： industrial effluent treatment industrial marine outfalls economic and environmental considerations