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A Cascade Genetic Algorithm and Particle Swarm Approach for Solving Unit Commitment and Economic Dispatch Problems

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A Cascade Genetic Algorithm and Particle Swarm Approach for ...

Rapid Repair of Earthquake Damaged RC Interior Beam-wide Column Joints and Beam-wall Joints Using FRP Composites

第二届亚洲机械电子学学术会议

作者： Siew Chin Neoh Norhashimah Morad chee peng lim Zalina Abdul Aziz School of Electrical and Electronic Engineering Universiti Sains Malaysia Engineering Campus Nibong Tebal 14300 Pulau Pinang Malaysia

Unit commitment and economic dispatch are two important decisions in thermal power generation scheduling. The tasks involve determination and allocation of power generation to thermal units that minimize the total power generation cost and satisfy the production *** paper presents a cascade Genetic Algorithm and Particle Swarm Optimization(GA-PSO)approach for solving thermal power generation scheduling based on a layered matrix encoding *** proposed hybrid method is compared to layered matrix encoding GA using the thermal power generation problem given in Williams[1]to demonstrate its effectiveness in generating an optimal,cost-effective power generation *** results showed that cascade GA-PSO outperformed the layered matrix encoding GA in minimizing the total power production cost for unit commitment and power dispatch problems.

关键词： Particle Swarm Optimization Genetic Algorithms Thermal Power Scheduling

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四川大学学报（工程科学版） 2009年第3期41卷 258-265页

作者： LI Bing lim chee Leong Inst. for the Environment Nanyang Technological Univ. Singapore

This paper studies the seismic performance of FRP-strengthened RC interior non-seismically detailed beam-wide columns and beam-wall joints after limited seismic *** eccentric and concentric beam-wide column joints and two beam-wall joints,initially damaged in a previous study,were repaired and tested under constant axial loads(0.1fc′Ag and 0.35fc′Ag) and lateral cyclic *** rapid repair technique developed,aimed to restore the original strength and to provide minimum drift *** repair schemes were characterized by the use of:(a) epoxy injections and polymer modified cementitious mortar to seal the cracks and replace spalled concrete;and(b) glass(GFRP) and carbon(CFRP) sheets to enhance the joint *** FRP sheets were effectively prevented against possible debonding through the use of fiber *** between responses of specimens before and after repair clearly indicated reasonable restoration in strength,drift capacity,stiffness and cumulative energy dissipation *** specimens failed with delamination of FRP sheets at beam-column joint *** rapid repair technique developed in this study is recommended for mass upgrading or repair of earthquake damaged beam-column joints.

关键词： FRP 建筑物抗震设计抗震结构

A hybrid Jacobian control for uncalibrated robot visual servoing

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Progress in Natural Science:Materials International 2005年第6期15卷 564-568页

作者： TEO chee-Leong,lim Siak-Piang Department of Mechanical Engineering National University of Singapore Singapore 117576 Department of Mechanical Engineering National University of Singapore Singapore 117576

This paper focuses on the visual servo control of an uncalibrated robotic arm with an eye-in-hand camera. Without a prior knowledge of the kinematics of the robotic arm or camera calibration, the proposed hybrid Jacobian controller can track a moving object using visual feedback and joint-space velocity feedback. The proposed hybrid control method is a combination of the uncalibrated visual servoing and approximate Jacobian feedback control. First, the Jacobian matrix from joint-space to image-space is estimated by recursive least-squares (RLS) algorithm, and then the approximate Jacobian feedback controller is designed by using visual feedback and joint-space velocity feedback. The performances of the proposed control methods are illustrated by computer simulations.

关键词： robot control uncalibrated visual servoing Jacobian control.

Mitochondrial homeostasis in Parkinson＇s disease-a triumvirate rule？

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Neural Regeneration Research 2017年第8期12卷 1270-1272页

作者： chee-Hoe Ng Liting Hang Kah-Leong lim National Neuroscience Institute Singapore Neuroscience & Behavioral Disorders Program Duke-NUSMedical School Singapore Department of Physiology National University of SingaporeSingapore NUS Graduate School for Integrative Sciences and Engineering Singapore

Mitochondrial dysfunction in Parkinson＇s disease：Mitochondria are the primary energy generator of the cell and they are important for cell survival and *** mitochondrial homeostasis is frequently reported in human d... 详细信息

关键词： PPAR PD cell PGC AMPK Mitochondrial homeostasis in Parkinson’s disease-a triumvirate rule

Unique and conserved features of floral evocation in legumes

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Journal of Integrative Plant Biology 2014年第8期56卷 714-728页

作者： lim chee Liew Mohan B. Singh Prem L. Bhalla Plant Molecular Biology and Biotechnology Laboratory Melbourne School of Land and Environment University of Melbourne

Legumes, with their unique ability to fix atmo- spheric nitrogen, play a vital role in ensuring future food security and mitigating the effects of climate change because they use less fossil energy and produce less greenhouse gases compared with N-fertilized systems. Grain legumes are second only to cereal crops as a source of human and animal food, and they contribute approximately one third of the protein consumed by the human population. The productivityof seed crops, such as grain legumes, is dependent on flowering. Despite the genetic variation and importance of flowering in legume production, studies of the molecular pathways that control flowering in legumes are limited. Recent advances in genomics have revealed that legume flowering pathways are divergent from those of such model species as Arabidopsis thaliana. Here, we discuss the current understanding of flowering time regulation in legumes and highlight the unique and conserved features of floral evocation in legumes.

关键词： Flowering legume soybean

Advances of macroalgae biomass for the third generation of bioethanol production

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Chinese Journal of Chemical Engineering 2020年第2期28卷 502-517页

作者： Inn Shi Tan Man Kee Lam Henry chee Yew Foo Steven lim Keat Teong Lee Department of Chemical Engineering Curtin UniversitySarawak Campus CDT 25098009 MiriSarawakMalaysia Chemical Engineering Department Universiti Teknologi PETRONAS32610 Seri IskandarPerakMalaysia Centre for Biofuel and Biochemical Research Institute of Self-Sustainable BuildingUniversiti Teknologi PETRONAS32610 Seri IskandarPerakMalaysia Department of Chemical Engineering Lee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul Rahman43000SelangorMalaysia School of Chemical Engineering Universiti Sains MalaysiaEngineering CampusSeri Ampangan14300 Nibong TebalPulau PinangMalaysia

In recent years, utilization of renewable sources for biofuel production is gaining popularity due to growing greenhouse gas(GHG) emissions which causes global warming. There has been a great effort in exploring alternative feedstock for bioethanol production. In this context, the production of third-generation bioethanol from macroalgae has emerged as an alternative feedstock to food crop-based starch and lignocellulosic *** is mainly due to the fast growth rate of macroalgae, no competition with agricultural land, high carbohydrate content and relatively simple processing steps compared to lignocellulosic biomass. This review paper provides an insight of recent innovative approaches for macroalgae bioethanol production, including conventional and advanced hydrolysis process to produce fermentable sugar, various fermentation technologies, economic analysis and life cycle assessment. With the current technology maturity, efficient utilization of macroalgae as sustainable source for bioethanol and other value-added chemicals production could be achieved in the near future.

关键词： Macroalage Hydrolysis Biomass Fermentation Bioethanol

Relevant Visual Semantic Context-Aware Attention-Based Dialog

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Computers, Materials & Continua 2023年第8期76卷 2337-2354页

作者： Eugene Tan Boon Hong Yung-Wey Chong Tat-chee Wan Kok-lim Alvin Yau National Advanced IPv6 Centre Universiti Sains MalaysiaPenangMalaysia Lee Kong Chian Faculty of Engineering and Science(LKCFES) Universiti Tunku Abdul RahmanSungai LongSelangorMalaysia

The existing dataset for visual dialog comprises multiple rounds of questions and a diverse range of image ***,it faces challenges in overcoming visual semantic limitations,particularly in obtaining sufficient context from visual and textual aspects of *** paper proposes a new visual dialog dataset called Diverse History-Dialog(DS-Dialog)to address the visual semantic limitations faced by the existing ***-Dialog groups relevant histories based on their respective Microsoft Common Objects in Context(MSCOCO)image categories and consolidates them for each ***,each MSCOCO image category consists of top relevant histories extracted based on their semantic relationships between the original image caption and historical *** relevant histories are consolidated for each image,and DS-Dialog enhances the current dataset by adding new context-aware relevant history to provide more visual semantic context for each *** new dataset is generated through several stages,including image semantic feature extraction,keyphrase extraction,relevant question extraction,and relevant history dialog *** DS-Dialog dataset contains about 2.6 million question-answer pairs,where 1.3 million pairs correspond to existing VisDial’s question-answer pairs,and the remaining 1.3 million pairs include a maximum of 5 image features for each VisDial image,with each image comprising 10-round relevant question-answer ***,a novel adaptive relevant history selection is proposed to resolve missing visual semantic information for each ***-Dialog is used to benchmark the performance of previous visual dialog models and achieves better performance than previous ***,the proposed DSDialog model achieves an 8% higher mean reciprocal rank(MRR),11% higher R@1%,6% higher R@5%,5% higher R@10%,and 8% higher normalized discounted cumulative gain(NDCG)compared to ***-Dialog also achieves approximately 1 point improvement o

关键词： Visual dialog context-aware relevant history computer vision natural language processing

Probing 10μK stability and residual drifts in the cross-polarized dual-mode stabilization of single-crystal ultrahigh-Q optical resonators

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Light(Science & Applications) 2019年第1期8卷 1170-1178页

作者： Jinkang lim Wei Liang Anatoliy A.Savchenkov Andrey B.Matsko Lute Maleki chee Wei Wong Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory University of CaliforniaLos AngelesCA 90095USA OEwaves Inc. 465 North Halstead StreetSuite 140PasadenaCA 91107USA

The thermal stability of monolithic optical microresonators is essential for many mesoscopic photonic applications such as ultrastable laser oscillators,photonic microwave clocks,and precision navigation and *** fundamental performance is largely bounded by thermal *** thermal monitoring can be achieved by utilizing cross-polarized dual-mode beat frequency metrology,determined by the polarization-dependent thermorefractivity of a single-crystal microresonator,wherein the heterodyne radio-frequency beat pins down the optical mode volume temperature for precision ***,we investigate the correlation between the dualmode beat frequency and the resonator temperature with time and the associated spectral noise of the dual-mode beat frequency in a single-crystal ultrahigh-Q MgF_(2) resonator to illustrate that dual-mode frequency metrology can potentially be utilized for resonator temperature stabilization reaching the fundamental thermal noise limit in a realistic *** show a resonator long-term temperature stability of 8.53μK after stabilization and unveil various sources that hinder the stability from reaching sub-μK in the current system,an important step towards compact precision navigation,sensing,and frequency reference architectures.

关键词： resonator polarization stabilization

Eosinophilic cholangitis treatment with budesonide

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World Journal of Hepatology 2017年第36期9卷 1385-1388页

作者： Marianne Anastasia De Roza chee Hooi lim Department of Gastroenterology and Hepatology Singapore General HospitalSingapore 169856Singapore

Eosinophilic cholangitis is a rare cause of deranged obstructive liver function tests. It has been described as a great mimicker for malignant biliary strictures and bile duct obstruction. There are only case reports available on treatment experience for eosinophilic cholangitis. A large proportion of patients present with biliary strictures for which they have undergone surgery or endoscopic treatment and a small proportion was given systemic corticosteroid. We share our treatment experience using budesonide which has fewer systemic side effects to prednisolone and avoids invasive management.

关键词： Eosinophilic cholangitis Budesonide Biliary stricture Eosinophilia Obstructive liver function test