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基于RDF4S的一种轻量语义Web服务组合

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计算机科学 2009年第6期36卷 114-118页

作者：黄蓓蓓 philip c-y sheu 应时张韬崔华张桂刚武汉大学软件工程国家重点实验室武汉430072 加州大学尔湾分校电子工程与计算机科学系美国加州92697

首先简要介绍语义Web服务资源描述框架(RDF4S),在此基础上提出语义Web服务包装机制,语义Web服务经包装后,分别通过组合接口和调用接口为组合语义Web服务的设计与调用提供支持。然后分别详细介绍组合语义Web服务的设计存储和调用执行:通... 详细信息

首先简要介绍语义Web服务资源描述框架(RDF4S),在此基础上提出语义Web服务包装机制,语义Web服务经包装后,分别通过组合接口和调用接口为组合语义Web服务的设计与调用提供支持。然后分别详细介绍组合语义Web服务的设计存储和调用执行:通过图形化的设计工具按照语义Web服务的3种基本逻辑关系设计组合结构图,然后将该图映射到组合结构信息表存储,组合语义Web服务执行时根据结构信息表生成语义Web服务代理对象和相应的语义消息,再根据语义消息传递机制调用Web服务实体。最后用一个实例展示组合语义Web服务执行时的消息传递,试验表明该方法有效。

关键词：服务资源描述框架语义Web服务包装组合结构信息表语义消息语义消息传递机制

Synthesis,Structures,and chiroptical Properties of NBN-Doped Helicenes with Boron Atoms in the Inner Rims

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Precision chemistry 2024年第1期2卷 28-39页

作者： Weiwen Zhuang yujian Liu Ziqi Deng yu Guo philip c.y.chow David Lee Phillips Wei Jiang Zhaohui Wang Junzhi Liu State Key Laboratory of Synthetic chemistry HKU-CAS Joint Laboratory on New Materials and Department of ChemistryThe University of Hong KongPokfulamHong KongChina Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084China Department of Mechanical Engineering The University of Hong KongPokfulamHong KongChina

The precise synthesis of helicenes with topologically defined length and specific heteroatomic perturbation in the screw-like conjugated skeletons plays an emerging role in the manipulation of chiral ***,selective,and programmable routes to helicenes or heterohelicenes are highly desirable yet challenging for structure-chiroptical property relationship ***,we report the synthesis and characterization of NBN-doped helicenes with boron atoms in the inner rims,enabled by the highly regioselective one-pot borylation of rationally designed precursors with,namely,fold-in or pan-out *** incorporation of nonbonded boron and nitrogen atoms resulted in narrow-band emission and improved optical properties for the single-stranded carbon *** addition,numbers and arrangement modes of fused six-membered rings have distinct effects on configurational stability and chiroptical properties,revealing that BN-[6]H with strong circular dichroism is a promising candidate for chiral *** combination of experimental and theoretical studies on these helical structures might provide insights into the design of helically chiral small-molecule-based sensors or emitters.

关键词： Nitrogen-boron Helicenes Borylation chiroptical properties Narrow-band emission

An efficient semi-blind source extraction algorithm and its applications to biomedical signal extraction

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Science in china(Series F) 2009年第10期52卷 1863-1874页

作者： yE yaLan sheu Phillip c-y ZENG JiaZhi WANG Gang LUKe School of computer Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China Department of Electrical Engineering and computer Science University of California Irvine CA 92697-2625 USA School of Life Science and Technology University of Electronic Science and Technology of China Chengdu 610054 China

In many applications, such as biomedical engineering, it is often required to extract a desired signal instead of all source signals. This can be achieved by blind source extraction （BSE） or semi-blind source extraction, which is a powerful technique emerging from the neural network field. In this paper, we propose an efficient semi-blind source extraction algorithm to extract a desired source signal as its first output signal by using a priori information about its kurtosis range. The algorithm is robust to outliers and spiky noise because of adopting a classical robust contrast function. And it is also robust to the estimation errors of the kurtosis range of the desired signal providing the estimation errors are not large. The algorithm has good extraction performance, even in some poor situations when the kurtosis values of some source signals are very close to each other. Its convergence stability and robustness are theoretically analyzed. Simulations and experiments on artificial generated data and real-world data have confirmed these results.

关键词： blind source extraction blind source separation independent component analysis electrocardiogram fetal EcG Atrial Fibrillation

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热力学遗传算法计算效率的改进

软件学报 2008年第7期19卷 1613-1622页

作者：应伟勤李元香 sheu Phillip c-y 武汉大学软件工程国家重点实验室湖北武汉430072 Department of Electrical Engineering and computer Science University of CaliforniaIrvineCA 92697USA

热力学遗传算法(thermodynamical genetic algorithms,简称TDGA)借鉴固体退火过程中能量与熵的竞争模式来协调GA中"选择压力"和"种群多样性"之间的冲突.然而TDGA目前极高的计算代价限制了其应用.为了提高TDGA的计算效率,首先定义一种等... 详细信息

热力学遗传算法(thermodynamical genetic algorithms,简称TDGA)借鉴固体退火过程中能量与熵的竞争模式来协调GA中"选择压力"和"种群多样性"之间的冲突.然而TDGA目前极高的计算代价限制了其应用.为了提高TDGA的计算效率,首先定义一种等级熵(rating-based entropy,简称RE)度量方法,它能以较小的计算成本度量种群中个体适应值的分散程度.然后引入分量热力学替换规则(component thermodynamical replacement,简称cTR),有效地降低了替换规则的复杂度.同时也证明了cTR规则具有驱动种群自由能近似最速下降的能力.在0-1背包问题上的实验结果表明,RE方法和cTR规则在保持TDGA良好的性能与稳定性的同时,极大地提高了其计算效率.

关键词：遗传算法热力学计算效率多样性度量潜换规则

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演化多目标优化中的几何热力学选择

计算机学报 2010年第4期33卷 755-767页

作者：应伟勤李元香 sheu Phillip c-y 吴昱余法红武汉大学软件工程国家重点实验室武汉430072 加州大学尔湾分校电气工程和计算机科学系美国加利福利亚92697

热力学遗传算法(Thermodynamical Genetic Algorithms,TDGAs)借鉴热力学中的自由能极小过程来统一处理多目标优化在逼近性和多样性两方面的任务.为提高TDGA的运行效率和解集分布均匀性,提出了一种几何热力学选择.在该选择中首先定义角... 详细信息

热力学遗传算法(Thermodynamical Genetic Algorithms,TDGAs)借鉴热力学中的自由能极小过程来统一处理多目标优化在逼近性和多样性两方面的任务.为提高TDGA的运行效率和解集分布均匀性,提出了一种几何热力学选择.在该选择中首先定义角度熵通过扇形采样来度量种群逼近方向的多样性.然后利用距离精英定义距离能量来度量种群的逼近程度,避免了耗时的非劣分层操作.此外,引入分量热力学替换规则以较低计算代价驱动种群的几何自由能快速下降.在多目标0/1背包问题上的实验结果表明,几何热力学选择极大地提高了TDGA的运行效率和解集分布均匀性;采用该选择的TDGA算法可生成与NSGA-II在逼近性和分布多样性上性能相当的解,但在运行效率上明显优于NSGA-II.

关键词：多目标优化演化算法热力学替换角度熵距离能量

A Survey of Human-centered Intelligent Robots:Issues and challenges

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IEEE/cAA Journal of Automatica Sinica 2017年第4期4卷 602-609页

作者： Wei He Zhijun Li c.L.philip chen IEEE School of Automation and Electrical Engineering University of Science and Technology Beijing college of Automation Science and Engineering South China University of Technology Department of computer and Information Science Faculty of Science and Technology University of Macao

Intelligent techniques foster the dissemination of new discoveries and novel technologies that advance the ability of robots to assist and support humans. The human-centered intelligent robot has become an important research field that spans all of the robot capabilities including navigation, intelligent control, pattern recognition and human-robot interaction. This paper focuses on the recent achievements and presents a survey of existing works on human-centered robots. Furthermore, we provide a comprehensive survey of the recent development of the human-centered intelligent robot and discuss the issues and challenges in the field.

关键词： Human-centered robots human-robot interaction intelligent control navigation path planning pattern recognition

Formation control with obstacle avoidance of second-order multi-agent systems under directed communication topology

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Science china(Information Sciences) 2019年第9期62卷 144-157页

作者： Guoxing WEN c.L.philip cHEN Hui DOU Hongli yANG chunfang LIU college of Science Binzhou University Department of computer and Information Science Faculty of Science and Technology University of Macau college of Navigation Dalian Maritime University State Key Laboratory of Management and control for complex Systems Institute of AutomationChinese Academy of Sciences Mathematics and Systems Science college Shandong University of Science and Technology

This paper addresses the obstacle avoidance problem of formation control for the multi-agent systems modeled by double integrator dynamics under a directed interconnection topology. The control task is finished by a leader-follower formation scheme combined with an artificial potential field(APF) *** leader-follower scheme is carried out by taking the desired trajectory with the desired velocity as virtual leader, while the APF method is carried out by dealing with the obstacles as the high potential points. When the obstacle avoidance tasks are finished, the artificial potential forces degrade the formation performance, so their undesired effects are treated as disturbances, which is analyzed by the robust H∞performance. Based on Lyapunov stability theory, it is proved that the proposed formation approach can realize the control objective. The result is also extended to the switching multi-agent formation. The effectiveness of the proposed formation scheme is further confirmed by simulation studies.

关键词： formation control obstacle avoidance artificial potential field method H_∞ performance second-order multi-agent system directed topology

Intersecting pathways in inflammation and cancer: Hepatocellular carcinoma as a paradigm

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World Journal of clinical Oncology 2012年第2期3卷 15-23页

作者： philip y Wai Paul c Kuo Department of Surgery Loyola University Chicago Stritch School of Medicine Maywood IL 60153 United States

Viral infection and chemical carcinogens trigger somatic changes resulting in activation of oncogenes during tumor initiation in the development of cancer. However, a critical interaction resides in the synergism between these somatic changes and an inflamed tumor microenvironment where myeloid and hematopoietic cells are subverted to enhance tumor progression. The causative molecular mechanisms leading to the development of hepatocellular cancer remain incompletely understood but appear to result from multiple factors related to direct hepatocyte injury and the ensuing inflammatory changes mediated by the host response to tissue injury, DNA damage, repair of cellular damage, and chronic, repetitive injury. In this review, the molecular and cellular changes that regulate inflammation and tissue repair will be compared to the activated local tumor microenvironment. cell-cell signaling within this microenvironment that enhances tumor progression and inhibits anti-tumor immunity will be

关键词： Hepatocellular cancer Inflammation Tumor microenvironment

Troubleshooting and Optimization of High-Strength Inhibitory chemical Wastewater Treatment Process

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chinese Journal of chemical Engineering 2005年第6期13卷 800-808页

作者：严月根 calvert c.churn 何光辉郑巧庚 philip c.y.Wong Nanjing Sembcorp SUIWU co Ltd Nanjing Chemical Industry Park Nanjing 210047China Eastman chemical co. KingsportTNUSA Sembcorp Utilities Pte Ltd 60 Admiralty Road West #02-01Singapore 759947

Wastewaters from the chemical industry are usually of high-strength and may contain minor inhibitory and recalcitrant organics that are at times not readily identifiable. This paper describes the experience of a biological waste water treatment plant （WWTP） processing a cOD concentration of 43000 mg·L^-1 wastewater from an oxochemical manufacturing plant. Stage improvements of the plant process by dilution of the inhibitory influent using other chemical wastewater streams resulting in a synergistic process effect, and removal of inhibitory organics by phase separation via acidification, effectively achieved process optimization producing a high quality effluent. In particular, the cOD removal efficiency of granular sludge based anaerobic reactors increased from 56% to 90%. The final effluent cOD decreased from 250mg·L^-1 to 50mg·L^-1, consistently meeting the cOD concentration of 100 mg·L^-1 regulatory discharge limit. The success of the process enhancements supports the hypothesis that long-chain quaternary carboxylic acids act as substrate inhibitors in the biological process.

关键词： operational experience waste water treatment plant (WVcTP) granular sludge chemical wastewater inhibitory recalcitrant long-chain quaternary carboxylic acids