资源类型

期刊论文 1205

会议视频 97

年份

2024 2

2023 63

2022 101

2021 80

2020 49

2019 37

2018 66

2017 73

2016 74

2015 63

2014 62

2013 48

2012 35

2011 65

2010 52

2009 41

2008 58

2007 70

2006 55

2005 45

展开 ︾

关键词

能源 19

颠覆性技术 15

战略研究 14

发展战略 10

农业科学 9

可持续发展 9

研究进展 8

人工智能 7

信息技术 7

医学 7

工程管理 7

智能制造 7

数值模拟 6

环境 6

指标体系 5

超光速 5

城镇建设 4

战略 4

技术预见 4

展开 ︾

检索范围：

排序： 展示方式：

NTRU格上基于身份签名的高效方案

Jia XIE,Yu-pu HU,Jun-tao GAO,Wen GAO

《信息与电子工程前沿（英文）》 2016年 第17卷 第2期   页码 135-142 doi: 10.1631/FITEE.1500197

摘要：

Identity-based signature has become an important technique for lightweight authentication as soon as it was proposed in 1984. Thereafter, identity-based signature schemes based on the integer factorization problem and discrete logarithm problem were proposed one after another. Nevertheless, the rapid development of quantum computers makes them insecure. Recently,many efforts have been made to construct identity-based signatures over lattice assumptions against attacks in the quantum era.However, their efficiency is not very satisfactory. In this study, an efficient identity-based signature scheme is presented over the number theory research unit (NTRU) lattice assumption. The new scheme is more efficient than other lattice- and identity-based signature schemes. The new scheme proves to be unforgeable against the adaptively chosen message attack in the random oracle model under the hardness of the γ-shortest vector problem on the NTRU lattice.

关键词： Identity     Signature     Lattice     Number theory research unit (NTRU)    

HTML PDF 收藏

基于活动方法的协同设计过程管理系统研究

郝永平,张建富,史春景,邵伟平

《中国工程科学》 2005年 第7卷 第12期   页码 69-73

摘要：

通过分析活动的组成及与过程建模的关系，提出了一种协同环境下设计过程管理的体系结构。根据产品开发过程的现状和特点，讨论了过程建模、多活动单元设计环境、过程监控以及系统间的数据交换等一系列重要的问题。最后，给出了协同设计过程管理和过程监控显示情况。

关键词： 活动理论     活动单元     过程建模     设计过程管理    

HTML PDF 收藏

The fundamental theory of traditional Chinese medicine and the consideration in its research strategy

Zhenji Li, Chunbo Xu

《医学前沿（英文）》 2011年 第5卷 第2期   页码 208-211 doi: 10.1007/s11684-011-0126-x

摘要： Stressing the uniqueness and complexity of traditional Chinese medicine (TCM) theory system, this paper analyzes the characteristics of TCM as a discipline from four perspectives: scientific nature, fundamental theory, clinical practice, and pharmacological action. It suggests that when the research strategy of TCM theory is designed, the core theory of TCM should be emphasized on the theoretical research on TCM original thinking theory, TCM theory, Chinese materia medica and formulas, acupuncture and moxibustion, meridians and collaterals, and other related fields. Researchers and practitioners should ensure that the basic research on TCM theory is based on clinical practice, research methods (both traditional and contemporary) are exploited, and methodological innovation is underscored. The rule of TCM development should be followed and the characteristics and advantages of TCM carried forward. Meanwhile, the methods and theory of contemporary science and technology should be exploited to fulfill the goal of inheriting, enriching, and developing the fundamental theory of TCM.

关键词： fundamental theory     traditional Chinese medicine     research strategy    

HTML PDF 收藏

The Effect of TRIZ on Research Institute Innovation

He Liu,Qing-hai Yang,Xu Jin

《工程管理前沿（英文）》 2014年 第1卷 第4期   页码 385-389 doi: 10.15302/J-FEM-2014059

摘要： With a background in improving independent innovation capabilities and building a world-class petroleum research institute, scientific innovation is the essence and basis of an innovative framework for a research institute, as well as the inexhaustible driving force for sustainable development. By introducing the theory of inventive problem solving (TRIZ) and combining it with CAI (computer aided innovation) technology, the Research Institute of Petroleum Exploration and Development established an adaptive innovative system by making experiments and fanning out from a point to an area gradually. This article takes the example of the innovative practices of the Department of Petroleum Equipment in Research Institute of Petroleum Exploration and Development, and introduces a building method for the innovative system based on technical innovation, enterprise culture, organizational structure, scheme, and people. It also summarizes the experiences and effects of improving innovative system upon scientific practice which can provide important guidance and reference significance for accelerating independent innovative capability.

关键词： innovative capability     TRIZ theory     petroleum equipment     research institute     innovative system    

HTML PDF 收藏

A solution to stochastic unit commitment problem for a wind-thermal system coordination

B. SARAVANAN,Shreya MISHRA,Debrupa NAG

《能源前沿（英文）》 2014年 第8卷 第2期   页码 192-200 doi: 10.1007/s11708-014-0306-x

摘要： Unit commitment (UC) problem is one of the most important decision making problems in power system. In this paper the UC problem is solved by considering it as a real time problem by adding stochasticity in the generation side because of wind-thermal co-ordination system as well as stochasticity in the load side by incorporating the randomness of the load. The most important issue that needs to be addressed is the achievement of an economic unit commitment solution after solving UC as a real time problem. This paper proposes a hybrid approach to solve the stochastic unit commitment problem considering the volatile nature of wind and formulating the UC problem as a chance constrained problem in which the load is met with high probability over the entire time period.

关键词： unit commitment (UC)     randomness     wind generation     univariate     chance constrained    

HTML PDF 收藏

Solving unit commitment problem using a novel version of harmony search algorithm

Roozbeh MORSALI,Tohid JAFARI,Amirhossein GHODS,Mohammad KARIMI

《能源前沿（英文）》 2014年 第8卷 第3期   页码 297-304 doi: 10.1007/s11708-014-0309-7

摘要： In this context, a novel structure was proposed for improving harmony search (HS) algorithm to solve the unit comment (UC) problem. The HS algorithm obtained optimal solution for defined objective function by improvising, updating and checking operators. In the proposed improved self-adaptive HS (SGHS) algorithm, two important control parameters were adjusted to reach better solution from the simple HS algorithm. The objective function of this study consisted of operation, start-up and shut-down costs. To confirm the effectiveness, the SGHS algorithm was tested on systems with 10, 20, 40 and 60 generating units, and the obtained results were compared with those of the simple HS algorithm and other related works.

关键词： generation scheduling     harmony search (HS) algorithm     intelligent technique     unit commitment    

HTML PDF 收藏

A solution to the unit commitment problem—a review

B. SARAVANAN, Siddharth DAS, Surbhi SIKRI, D. P. KOTHARI

《能源前沿（英文）》 2013年 第7卷 第2期   页码 223-236 doi: 10.1007/s11708-013-0240-3

摘要： Unit commitment (UC) is an optimization problem used to determine the operation schedule of the generating units at every hour interval with varying loads under different constraints and environments. Many algorithms have been invented in the past five decades for optimization of the UC problem, but still researchers are working in this field to find new hybrid algorithms to make the problem more realistic. The importance of UC is increasing with the constantly varying demands. Therefore, there is an urgent need in the power sector to keep track of the latest methodologies to further optimize the working criterions of the generating units. This paper focuses on providing a clear review of the latest techniques employed in optimizing UC problems for both stochastic and deterministic loads, which has been acquired from many peer reviewed published papers. It has been divided into many sections which include various constraints based on profit, security, emission and time. It emphasizes not only on deregulated and regulated environments but also on renewable energy and distributed generating systems. In terms of contributions, the detailed analysis of all the UC algorithms has been discussed for the benefit of new researchers interested in working in this field.

关键词： unit commitment (UC)     optimization     deterministic load     stochastic load     evolutionary programming (EP)     hybrid    

HTML PDF 收藏

Research on the theory and application of adsorbed natural gas used in new energy vehicles: A review

Zhengwei NIE,Yuyi LIN,Xiaoyi JIN

《机械工程前沿（英文）》 2016年 第11卷 第3期   页码 258-274 doi: 10.1007/s11465-016-0381-2

摘要：

Natural gas, whose primary constituent is methane, has been considered a convincing alternative for the growth of the energy supply worldwide. Adsorbed natural gas (ANG), the most promising methane storage method, has been an active field of study in the past two decades. ANG constitutes a safe and low-cost way to store methane for natural gas vehicles at an acceptable energy density while working at substantially low pressures (3.5–4.0 MPa), allowing for conformable store tank. This work serves to review the state-of-the-art development reported in the scientific literature on adsorbents, adsorption theories, ANG conformable tanks, and related technologies on ANG vehicles. Patent literature has also been searched and discussed. The review aims at illustrating both achievements and problems of the ANG technologies-based vehicles, as well as forecasting the development trends and critical issues to be resolved of these technologies.

关键词： adsorbed natural gas (ANG)     adsorbent     adsorption theory     conformable tank     natural gas vehicles (NGVs)    

HTML PDF 收藏

膨化硝酸铵自敏化理论研究

吕春绪

《中国工程科学》 2000年 第2卷 第11期   页码 73-77

摘要：

膨化硝酸铵自敏化理论是膨化技术发明的核心，它是基于热点理论把微气泡植入硝酸铵炸药中。微气泡临界热点温度热力学计算为自敏化提供理论依据。与普通硝酸铵及珍珠岩相比较，微气泡在膨化硝酸铵内适当的分布为自敏化成功提供了有力的保证。

关键词： 膨化硝酸铵     自敏化     微气泡    

HTML PDF 收藏

硝酸铵膨化理论研究

吕春绪

《中国工程科学》 2001年 第3卷 第9期   页码 58-63

摘要：

描述了硝酸铵膨化过程，计算与测定了其物理化学参数，研究了膨化过程的影响因素，并给出了膨化过程可能的机理。

关键词： 膨化硝酸铵     膨化理论     物理化学参数     影响因素    

HTML PDF 收藏

三峡工程巨型水轮发电机组设计与实践

邵建雄,刘景旺,袁达夫

《中国工程科学》 2011年 第13卷 第7期   页码 104-110

摘要：

分析了三峡水轮发电机组设计中必须考虑的主要问题；总结了所进行的关键技术研究；通过关键技术问题研究，使得三峡水轮发电机组参数达到最优化。机组运行结果表明三峡水轮发电机组性能良好，能够长期安全、稳定、高效运行，从而有效地验证了对三峡巨型水轮发电机组的总体技术设计是科学合理的。

关键词： 三峡工程     700 MW级水电机组     单机容量     设计研究     运行稳定性     实践    

HTML PDF 收藏

Estimating the number of Chinese cancer patients eligible for and benefit from immune checkpoint inhibitors

《医学前沿（英文）》 2022年 第16卷 第5期   页码 773-783 doi: 10.1007/s11684-021-0902-1

摘要： The total number of cancer patients who are eligible for and will benefit from immune checkpoint inhibitors (ICIs) in China has not been quantified. This cross-sectional study was conducted to estimate the number of Chinese cancer patients with eligibility and response to ICIs based on the 2015 Chinese cancer statistics and the immune checkpoint inhibitor clinical practice guideline of the Chinese Society of Clinical Oncology. A total of 11 ICIs were recommended for 17 cancer types. The estimated number of eligible patients annually was 1 290 156 (55.18%), which included 888 738 males (60.05%) and 400 468 females (46.67%). The estimated number of responders annually was 448 972 (19.20%), which included 309 023 males (20.88%) and 139 764 females (16.29%). Gastric cancer (n=291 000, 12.45%), non-small-cell lung cancer (n=289 629, 12.39%), and hepatocellular carcinoma (n=277 100, 11.85%) were the top three cancer types with the highest number of eligible patients. Non-small-cell lung cancer (n=180 022, 7.70%), hepatocellular carcinoma (n=75 648, 3.24%), and small-cell lung cancer (n=64 362, 2.75%) were the top three cancer types with the highest number of responders. In conclusion, ICIs provide considerable benefit in Chinese cancer patients under optimal estimation.

关键词： benefit     China     eligibility     immune checkpoint inhibitor     public health    

HTML PDF 收藏

Energy saving design of the machining unit of hobbing machine tool with integrated optimization

《机械工程前沿（英文）》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0694-2

摘要： The machining unit of hobbing machine tool accounts for a large portion of the energy consumption during the operating phase. The optimization design is a practical means of energy saving and can reduce energy consumption essentially. However, this issue has rarely been discussed in depth in previous research. A comprehensive function of energy consumption of the machining unit is built to address this problem. Surrogate models are established by using effective fitting methods. An integrated optimization model for reducing tool displacement and energy consumption is developed on the basis of the energy consumption function and surrogate models, and the parameters of the motor and structure are considered simultaneously. Results show that the energy consumption and tool displacement of the machining unit are reduced, indicating that energy saving is achieved and the machining accuracy is guaranteed. The influence of optimization variables on the objectives is analyzed to inform the design.

关键词： energy saving design     energy consumption     machining unit     integrated optimization     machine tool    

HTML PDF 收藏

Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

《结构与土木工程前沿（英文）》 2020年 第14卷 第6期   页码 1331-1348 doi: 10.1007/s11709-020-0686-4

摘要： This article proposes a novel methodology that uses mathematical and numerical models of a structure to build a data set and determine crucial nodes that possess the highest sensitivity. Regression surfaces between the structural parameters and structural output features, represented by the natural frequencies of the structure and local transmissibility, are built using the numerical data set. A description of a possible experimental application is provided, where sensors are mounted at crucial nodes, and the natural frequencies and local transmissibility at each natural frequency are determined from the power spectral density and the power spectral density ratios of the sensor responses, respectively. An inverse iterative process is then applied to identify the structural parameters by matching the experimental features with the available parameters in the myriad numerical data set. Three examples are presented to demonstrate the feasibility and efficacy of the proposed methodology. The results reveal that the method was able to accurately identify the boundary coefficients and physical parameters of the Euler-Bernoulli beam as well as a highway bridge model with elastic foundations using only two measurement points. It is expected that the proposed method will have practical applications in the identification and analysis of restored structural systems with unknown parameters and boundary coefficients.

关键词： structural model validation     eigenvalue problem     response surface     inverse problems    

HTML PDF 收藏

Research on the ecological compensation standard of the basin pollution control project based on evolutionarygame theory and by taking Xiangjiang River as a case

Dongbin HU, Huiwu LIU, Xiaohong CHEN, Yang CHEN

《工程管理前沿（英文）》 2019年 第6卷 第4期   页码 575-583 doi: 10.1007/s42524-019-0044-1

摘要： Ecological compensation is a new resource and environment management model. As one of the main areas for implementing ecological compensation policies, basin ecological compensation has become an important measure for encouraging basin pollution control projects and improving the quality of regional economic development. By applying the basic game analysis of evolutionary game theory and building an evolutionary game model with a “reward–punishment” mechanism, this paper compares the interest-related decision-making behaviors of the upstream and downstream stakeholders of basin ecological compensation. By using data on the water quality of Xiangjiang River Basin, this paper calculates the rewards and penalties in different intervals by building a parametric regression mathematical model and employing the local linear regression method. Results show that a decline in water quality should be fined RMB 925500 yuan, an improvement in water quality should be awarded RMB 1227800 yuan, and a deteriorating water quality should be severely fined RMB 5087600 yuan.

关键词： evolutionary game     ecological compensation standard     Xiangjiang River Basin    

HTML PDF 收藏

标题 作者 时间 类型 操作

NTRU格上基于身份签名的高效方案

Jia XIE,Yu-pu HU,Jun-tao GAO,Wen GAO

期刊论文

基于活动方法的协同设计过程管理系统研究

郝永平,张建富,史春景,邵伟平

期刊论文

The fundamental theory of traditional Chinese medicine and the consideration in its research strategy

Zhenji Li, Chunbo Xu

期刊论文

The Effect of TRIZ on Research Institute Innovation

He Liu,Qing-hai Yang,Xu Jin

期刊论文

A solution to stochastic unit commitment problem for a wind-thermal system coordination

B. SARAVANAN,Shreya MISHRA,Debrupa NAG

期刊论文

Solving unit commitment problem using a novel version of harmony search algorithm

Roozbeh MORSALI,Tohid JAFARI,Amirhossein GHODS,Mohammad KARIMI

期刊论文

A solution to the unit commitment problem—a review

B. SARAVANAN, Siddharth DAS, Surbhi SIKRI, D. P. KOTHARI

期刊论文

Research on the theory and application of adsorbed natural gas used in new energy vehicles: A review

Zhengwei NIE,Yuyi LIN,Xiaoyi JIN

期刊论文

膨化硝酸铵自敏化理论研究

吕春绪

期刊论文

硝酸铵膨化理论研究

吕春绪

期刊论文

三峡工程巨型水轮发电机组设计与实践

邵建雄,刘景旺,袁达夫

期刊论文

Estimating the number of Chinese cancer patients eligible for and benefit from immune checkpoint inhibitors

期刊论文

Energy saving design of the machining unit of hobbing machine tool with integrated optimization

期刊论文

Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

期刊论文

Research on the ecological compensation standard of the basin pollution control project based on evolutionarygame theory and by taking Xiangjiang River as a case

Dongbin HU, Huiwu LIU, Xiaohong CHEN, Yang CHEN

期刊论文