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求解流水车间调度问题的混合粒子群算法

电子学报 2011年第5期39卷 1087-1093页

作者：田野刘大有吉林大学计算机科学与技术学院吉林长春130012 吉林大学符号计算与知识工程教育部重点实验室吉林长春130012

本文提出了一种混合的元启发式方法HDCPSO用于求解置换流水车间调度问题中的最小化完成时间.该算法将粒子群算法和迭代贪心算法(Iterative Greedy,IG)相结合,利用IG算法中的作业毁坏(Destruction)和构造(Con-struction)操作来对粒子进... 详细信息

本文提出了一种混合的元启发式方法HDCPSO用于求解置换流水车间调度问题中的最小化完成时间.该算法将粒子群算法和迭代贪心算法(Iterative Greedy,IG)相结合,利用IG算法中的作业毁坏(Destruction)和构造(Con-struction)操作来对粒子进行变异,降低群体发生早熟的可能.引入了个体徘徊概念,用来控制个体变异.此外,通过基于插入的邻域搜索来提高个体的局部搜索能力.最后,提出了群体的重新初始化机制来进一步避免早熟收敛的发生.本文算法在不同规模的问题实例上与其他几个具有代表性的算法进行了比较,实验结果表明,无论是在求解质量还是稳定性方面都优于其他算法.

关键词：粒子群算法车间调度迭代贪心算法个体徘徊重新初始化

A robust composite wide area control of a DFIG wind energy system for damping inter-area oscillations

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Protection and Control of Modern Power Systems 2020年第1期5卷 280-289页

作者： Ayyarao S.l.V.Tummala Department of EEE GMR Institute of TechnologyRajam 532127India

This paper presents a novel composite wide area control of a DFIG wind energy system which combines the Robust Exact Differentiator(RED)and Discontinuous Integral(DI)control to damp out inter-area *** generates the real-time differentiation of a relative speed signal in a noisy environment while DI control,an extension to a twisting algorithm and PID control,develops a continuous control signal and hence reduces *** proposed control is robust to disturbances and can enhance the overall stability of the *** proposed composite sliding mode control is evaluated using a modified benchmark two-area power system model with wind energy *** results under various operating scenarios show the efficacy of the proposed approach.

关键词： DFIG Wide area control Wind energy system Sliding mode control

lHCb gets closer to discovering the second doubly charmed baryon

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Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 25-26页

作者： Marek Karliner Jonathan l.Rosner School of Physics and Astronomy Tel Aviv UniversityTel Aviv 69978Israel Enrico Fermi Institute and Department of Physics University of ChicagoChicagoIL 60637USA

Recently the lHCb Collaboration [1] published the results of a search for the doubly charmed baryon ■. No significant signal is seen in the mass range from 3.4 to3.8 Ge V. To put this result in context, the ■baryon was seen by lHCb in decay modes ΛcK-π^+π^+[2](2017) and ■^+cπ^+[3](2018). The weighted average of the ■^++cc mass is 3621.24±0.65 (stat.)±0.31 (syst.) MeV [3].

关键词： doubly closer lHCb

lQR and lQG based optimal switching techniques for PSS and UPFC in power systems

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Control Theory and Technology 2018年第1期16卷 25-37页

作者： l. YATHISHA S. PATIlKUlKARNI E & C Department ATME College of Engineering VTU Karnataka India E & C Department Sri Jayachamarajendra College of Engineering (JSSSTU) Karnataka India

Selection of better optimized unified power flow controller （UPFC） control inputs along with simultaneous coordinated design of power system stabilizer （PSS） is a challenge in the present scenario of power systems. Hence, in this paper, four sets of experiments performed are presented. First set of experiments are without disturbance scenario where switching is done using linear quadratic regulators （lQR＇s）. Second set is for power systems with disturbances using linear quadratic gaussian （lQG）. Switching control algorithms presented here are tested on the single machine infinite bus （SMIB） linearised Phillips Heffron model of power system using MATlAB/SIMUlINK~ platform.

关键词： lQR lQG UPFC PSS power system & SMIB

典型农药污染场地地下水中苯系物监控自然衰减研究

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环境科学学报 2022年第7期42卷 380-388页

作者：周艳姜登登孔令雅丁达邓绍坡夏菲洋生态环境部南京环境科学研究所南京210042 国家环境保护土壤环境管理与污染控制重点实验室南京210042

通过对某农药污染场地地下水中苯系物(BTEX)4年的长期监测数据进行分析,识别了该场地地下水中BTEX浓度的空间分布规律,并研究了场地地下水中BTEX的自然衰减规律.结果表明,地下水BTEX污染程度较重,浓度为0.001~180.52 mg·l^(-1),平均浓... 详细信息

通过对某农药污染场地地下水中苯系物(BTEX)4年的长期监测数据进行分析,识别了该场地地下水中BTEX浓度的空间分布规律,并研究了场地地下水中BTEX的自然衰减规律.结果表明,地下水BTEX污染程度较重,浓度为0.001~180.52 mg·l^(-1),平均浓度为13.30 mg·l^(-1);BTEX浓度和污染羽面积随时间出现波动式变化,但整体仍呈逐渐减小的趋势,表明地下水中BTEX发生了自然衰减;地下水中氧化还原电位(ORP)与BTEX浓度呈显著负相关,说明研究区中BTEX高浓度区域在发生生物降解;研究区BTEX的衰减速率较小,半衰期较长,说明该场地单纯依靠监控自然衰减的修复时间将较长,需要与化学刺激等其他主动修复技术相结合以提高自然衰减效率.

关键词：污染场地地下水农药苯系物(BTEX) 空间分布自然衰减

Approaches to antiretroviral therapy in China

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Cell Research 2005年第Z1期15卷 895-902页

作者： Bruce l GIllIAM Robert R REDFIElD Division of Clinical Care and Research Institute of Human Virology University of Maryland Baltimore MD 21201 USA

China has recognized the threat of HIV to its population and responded with a national antiretroviral treatment (ART) program. However, high ART failure rates and the spread of resistance within populations are important realities to consider when developing and managing ART programs in China and worldwide. Concepts which will define treatment success and local and national programmatic goals are 1) access to ART, 2) durability of ART at the patient level, 3) scalability of treatment modalities, and the 4) sustainability of the program at the community or national level. In the face of limited resources, China must also consider when to start ARV therapy, which agents to use, when to switch them, and how to treat highly experienced patients with drug resistance. The optimal ARV regimen to start with is changing frequently with the introduction of new agents and the presentation of new data. Currently, a regimen including tenofovir, emtricitabine or lamivudine and a nonnucleoside reverse transcriptase inhibitor appears to have optimal characteristics to treat HIV/AIDS in China. However, critical to all of these choices is the evaluation of programs implemented to insure wide scale success. China has wisely begun this process of evaluating the perfor- mance of local programs through systematic monitoring and evaluation of treatment outcomes. This will allow regi- mens and programs that work to be expanded, and programs with high failure rates to be eliminated. In the end, evidence based data supporting treatment strategies will allow China to successfully confront its AIDS epidemic early and prevent its tragic consequences

关键词： antiretroviral therapy scalability HIV/AIDS.

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《公众的怒火》对虚假历史文本的揭示与消解

沈阳师范大学学报（社会科学版） 2022年第3期46卷 101-106页

作者：邢达付筱娜辽宁大学新闻与传播学院辽宁沈阳110036 辽宁大学外国语学院辽宁沈阳110036

当今世界“冷战”虽已退出历史舞台,但冷战思维依然存在。西方世界仍受冷战思维影响,对其他的文化、价值观念、社会形态进行排斥,严重阻碍了国际和平与安全及全球化进程。罗伯特·库弗在他的《公众的怒火》中揭示了冷战思维与虚假历史... 详细信息

当今世界“冷战”虽已退出历史舞台,但冷战思维依然存在。西方世界仍受冷战思维影响,对其他的文化、价值观念、社会形态进行排斥,严重阻碍了国际和平与安全及全球化进程。罗伯特·库弗在他的《公众的怒火》中揭示了冷战思维与虚假历史文本的关系。从《公众的怒火》中体悟具有象征意义的种种人物形象及社会现象,可以深刻理解作为维护统治集团利益工具的虚假历史文本对全球化和多极化的阻碍,并进而探索消解虚假历史文本的方法,从而打破不同文化、意识形态之间交流的壁垒。

关键词：《公众的怒火》历史文本象征

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丧失自我的“土生子”——集体无意识对黑人的挤压和同化

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辽宁师范大学学报（社会科学版） 2022年第3期45卷 102-107页

作者：邢达付筱娜辽宁大学新闻与传播学院辽宁沈阳110136 辽宁大学外国语学院辽宁沈阳110136

以社会结构为载体的同类经验的积淀最终会转化为集体无意识,不合理的社会结构的固化会强化不合理的集体无意识,种族歧视正是建立在不合理社会结构所导致的集体无意识之上,并逐渐被扩大到社会的各个领域以及人性的各个层面。通过理查德... 详细信息

以社会结构为载体的同类经验的积淀最终会转化为集体无意识,不合理的社会结构的固化会强化不合理的集体无意识,种族歧视正是建立在不合理社会结构所导致的集体无意识之上,并逐渐被扩大到社会的各个领域以及人性的各个层面。通过理查德·赖特的《土生子》中主人公性格与命运的悲剧,可以理解白人社会的集体无意识与黑人身份构建之间的矛盾;同时通过分析这种集体无意识的产生根源可以消解种族歧视产生的心理和社会因素,进而实现民族平等并促进世界多元化发展。

关键词：集体无意识种族歧视自我觉醒身份构建

Aircraft Measurements of Cloud–Aerosol Interaction over East Inner Mongolia

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Advances in Atmospheric Sciences 2017年第8期34卷 983-992页

作者： Yuhuan lü Hengchi lEI Jiefan YANG Wuqing Meteorological Observatory ofTianjin Tianjin 301700 China Key laboratory of Cloud-Precipitation Physics and Severe Storm Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing 210044 China

To investigate the potential effects of aerosols on the microphysical properties of warm clouds, airborne observational data collected from 2009 to 2011 in Tongliao, Inner Mongolia, China, were statistically analyzed in this study. The results demonstrated that the vertical distribution of the aerosol number concentration（N_a） was similar to that of the clean rural continent. The average aerosol effective diameter（D_e） was maintained at approximately 0.4 μm at all levels. The data obtained during cloud penetrations showed that there was a progressive increase in the cloud droplet concentration（N_c） and liquid water content（lWC） from outside to inside the clouds, while the Nawas negatively related to the Ncand lWC at the same height. The fluctuation of the N_a, Ncand lWC during cloud penetration was more obvious under polluted conditions（Type 1） than under clean conditions（Type 2）. Moreover, the wet scavenging of cloud droplets had a significant impact on the accumulation mode of aerosols, especially on particles with diameters less than 0.4 μm. The minimum wet scavenging coefficient within the cloud was close to 0.02 under Type 1 conditions, while it increased to 0.1 under Type 2 conditions,which proved that the cloud wet scavenging effect under Type 1 conditions was stronger than that under Type 2 ***, cloud droplet spectra under Type 1 conditions were narrower, and their horizontal distributions were more homogeneous than those under Type 2 conditions.

关键词： aircraft observation aerosol warm cloud microphysical properties