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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

Fuzzy Logic Controller-based Synchronverter in Grid-connected Solar Power System with Adaptive Damping Factor

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Chinese Journal of Electrical Engineering 2021年第2期7卷 37-49页

作者： Kah yung Yap chee Ming Beh Charles R.Sarimuthu Department of Electrical and Computer Systems Engineering(ECSE) School of EngineeringMonash University MalaysiaSubang Jaya 47500Malaysia

In recent years,renewable energy sources,specifically solar power systems,have developed rapidly owing to their technological maturity and cost ***,its grid integration deteriorates frequency stability because of insufficient rotating masses and inertial ***,a synchronverter,which is an inverter that mimics the operation of a synchronous generator,is crucial to interface solar power in a power *** stabilizes the power grid by emulating a virtual ***,a conventional proportional-integral(PI)-based synchronverter is not equipped with an adaptive damping factor(Dp)or a digitalized smart controller to manage fast-responding solar ***,a novel fuzzy logic controller(FLC)framework is proposed such that the synchronverter can operate in a grid-connected solar power *** this study,Dp is controlled in real time using an FLC to achieve balance between speed and stability for frequency error correction based on frequency *** of four case studies performed in Matlab/Simulink show that the proposed FLC-based synchronverter can stabilize the grid frequency by reducing the frequency deviation by at least 0.2 Hz(0.4%),as compared with the conventional PI-based synchronverter.

关键词： Fuzzy logic controller(FLC) synchronverter renewable energy system(RES) grid stability solar power system

Simultaneous H∞ Control for a Collection of Nonlinear Systems in Canonical Form

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Simultaneous H∞ Control for a Collection of Nonlinear Syste...

第二十九届中国控制会议

作者： WU Jenq-Lang yung chee-Fai Department of Electrical Engineering National Taiwan Ocean University

ISBN: (纸本)9787894631046

A constructive method for designing simultaneous H∞ controllers for a class of nonlinear control systems is *** mild assumptions,it is shown that control storage functions（CSFs） for nonlinear systems in canonical form can be constructed systematically;and,simultaneous H control for such systems can always be *** on the derived CSFs,a universal formula for constructing simultaneous H∞ controllers is proposed *** illustrative example is given to show the validity of the method.

关键词： SimultaneousH $Control State Feedback Nonlinear Control Systems Control Storage Function.

Distinctive serotypes of SARS-related coronaviruses defined by convalescent sera from unvaccinated individuals

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hLife 2023年第1期1卷 26-34页

作者： chee Wah Tan Feng Zhu Wan Ni Chia #Barnaby EYoung Aileen Ying Yan Yeoh Thomas Althaus chee Fu yung Wee chee Yap Beng Lee Lim Mark I-C Chen Jinyan Zhang Yun Yan Mah Eric Voiglio Alex Sigal Jianxin Huo Shengli Xu Yee Joo Tan Kong-Peng Lam David Lye Lin-Fa Wang Programme in Emerging Infectious Diseases Duke-NUS Medical SchoolSingapore National Center of Infectious Diseases Singapore Tan Tock Seng Hospital Singapore Lee Kong Chian School of Medicine Nanyang Technology UniversitySingapore Centre Scientifique de Monaco Monaco Direction de I’Action Sanitaire de Monaco Monaco Infectious Disease Service Department of PediatricsKK Women’s and Children’s HospitalSingapore Duke-NUS Medical School Singapore African Health Research Institute DurbanSouth Africa Singapore Immunology Network Agency for ScienceTechnology and ResearchSingapore Department of Physiology Yong Loo Lin School of MedicineNational University of SingaporeSingapore Department of Microbiology and Immunology Yong Loo Lin School of MedicineNational University of SingaporeSingapore Infectious Diseases Translational Research Programme National University of SingaporeSingapore 14School of Biological SciencesNanyang Technological UniversitySingapore Singhealth Duke-NUS Global Health Institute Singapore

Multiple Omicron sub-lineages have emerged,with Omicron XBB and XBB.1.5 subvariants becoming the dominant variants globally at the time of this *** key feature of new variants is their ability to escape humoral immunity despite the fact that there are limited genetic changes from their preceding *** raises the question of whether Omicron should be regarded as a separate serotype from viruses serologically clustered with the ancestral severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)***,we present cross-neutralization data based on a pseudovirus neutralization test using convalescent sera from naïve individuals who had recovered from primary infection by SARS-CoV-1 and SARS-CoV-2 strains/variants including the ancestral virus and variants Beta,Delta,Omicron BA.1,Omicron BA.2 and Omicron *** results revealed no significant cross-neutralization in any of the three-way testing for SARS-CoV-1,ancestral SARS-CoV-2 and SARS-CoV-2 Omicron *** data argue for the assignment of three distinct serotypes for the currently known human-infecting SARS-related coronaviruses.

关键词： SARS-CoV-2 SARS-CoV-1 serotype Omicron primary infection convalescent sera

Low-depth optical neural networks

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Chip 2022年第1期1卷 8-13页

作者： Xiao-Ming Zhang Man-Hong yung Department of Physics Southern University of Science and TechnologyShen-zhen 518055China Department of Physics City University of Hong KongTat Chee AvenueKowloonHong Kong SARChina Shenzhen Institute for Quan-tum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShen-zhen 518055China Shenzhen Key Laboratory of Quantum Science and En-gineering Southern University of Science and TechnologyShenzhen518055China

Optical neural network(ONNs)are emerging as attractive propos-als for machine-learning ***,the stability of ONNs decreases with the circuit depth,limiting the scalability of ONNs for practical *** we demonstrate how to compress the circuit depth to scale only logarithmically in terms of the dimension of the data,leading to an exponential gain in terms of noise *** low-depth(LD)-ONN is based on an architecture,called Optical Com-puTing Of dot-Product UnitS(OCTOPUS),which can also be applied individually as a linear perceptron for solving classification *** present both numerical and theoretical evidence showing that LD-ONN can exhibit a significant improvement on robustness,compared with previous ONN proposals based on singular-value decomposition.

关键词： optical neural networks photonic chip machine learning

A Small Cap-shaped CP patch Antenna

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A Small Cap-shaped CP patch Antenna

2005'全国微波毫米波会议

作者： Pui-Yi LAU,Hang WONG,Kwai-Man LUK and Kai-Ning yung Department of Electronic Engineering,City University of Hong Kong 83 Tat chee Avenue,Kowloon,Hong Kong SAR,PRC

＜正＞A small size circularly polarized（CP） patch antenna with a pair of T-shaped probe feed is *** cap-shaped folded patch has a 54%total area reduction in comparison with the conventional half-wave patch *** antenna generates a CP wave at *** impedance bandwidth（SWR＜2） is 21.83%from 2 to 2.49GHz and the axial ratio bandwidth（AR＜3dB） is 3.81%.The antenna obtains a 7.4dBi gain and shows a symmetric CP radiation pattern.

关键词： T-probe folded patch circularly polarization

Exploring the Influence of Commitment on Stress for Cost Estimators in Hong Kong

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Exploring the Influence of Commitment on Stress for Cost Est...

第五届（2010）中国管理学年会——组织与战略分会场

作者： Dongyu Chen1 Mei-yung Leung2 1 School of Economics Information Engineering,South-western University of Finance and economics,chendongyu 2Department of Building and Construction,City University of Hong Kong,Tat chee Avenue,Kowloon Tong,Hong Kong

Cost estimators in Hong Kong face high levels of *** understanding the key factors that cause stress for cost estimators is critical for its management,we investigate the impact of the organizational commitment of cost estimators on their stress *** find that stress is significantly influenced by the degree to which a cost estimator is committed to an *** stress has a significant negative association with normative commitment,while emotional stress also shows a significant negative correlation with both affective and normative *** improve the performance of cost estimators,we recommend that organizations take necessary actions,such as employing a consideration leadership style and developing an innovative organizational culture,to enhance commitment and mitigate *** also recommend that qualitative studies,such as case studies and lateral research,be undertaken to cross-validate the findings in this study.

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Plug-and-Play Approach to Non-adiabatic Geometric Quantum Computation

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Plug-and-Play Approach to Non-adiabatic Geometric Quantum Co...

第十八届全国量子光学学术会议

作者：刘宝杰 Xue-Ke Song Zheng-Yuan Xue Xin Wang Man-Hong yung 南方科技大学 Institute for Quantum Science and Engineering and Department of PhysicsSouthern University of Science and Technology Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials and School of Physics and Telecommunication EngineeringSouth China Normal University Department of Physics City University of Hong KongTat Chee AvenueKowloonHong Kong SARChinaand City University of Hong Kong Shenzhen Research Institute Shenzhen Key Laboratory of Quantum Science and Engineering

Geometrical phases acquired in cyclic quantum evolutions can be utilized as natural resources for constructing robust logic gates for quantum information processing, which was originally proposed through adiabatic changes of the driving Hamiltonian. Practically, much efforts have been made to shorten the construction times of geometrical gates, known as non-adiabatic holonomic quantum computation（NHQC）. However, previous NHQC gates require the driving Hamiltonian to satisfy a set of rather restrictive conditions, reducing the robustness of the resulting geometric gates against control errors. Here we show that non-adiabatic geometric gates can be constructed in an alternative way where the driving Hamiltonian can exhibit a high degree of flexibility for retaining the robustness of the geometric phases. Consequently, this approach makes it possible to incorporate most of the existing optimal control methods, such as dynamical decoupling, composite pulses, and shortcut to adiabaticity, into the construction of geometrical gates, to further address different types of errors. Furthermore, this extensible approach of geometric quantum computation can be applied to various physical platform such as superconducting qubits and nitrogen-vacancy（NV） centers. Specifically, we performed numerical simulation to show how the noise robustness in the recent experimental implementations [Phys. Rev. Lett. 119, 140503（2017）] and [Nat. Photonics 11, 309（2017）] of NHQC with NV centers can be significantly improved by our optimized NHQC approach. These results cover a large class of new techniques combing the noise robustness of both geometric phase and optimal control theory. Recently, a restricted form of NHQC+STA has already been demonstrated experimentally, using only three energy levels of a superconducting qubit, where the theoretical proposal was contributed by the first and last authors of this work.

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2019年全球、地区和国家5岁以下儿童呼吸道合胞病毒引发急性下呼吸道感染疾病负担研究的系统分析

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中国病毒病杂志 2023年第2期13卷 81-95页

作者： You Li Xin Wang Dianna M.Blau Mauricio T.Caballero Daniel R.Feikin Christopher J.Gill Shabir A.Madhi Saad B.Omer Eric A.F Simoes Harry Campbell Ana Bermejo Pariente Darmaa Bardach Quique Bassat Jean-Sebastien Casalegno Giorgi Chakhunashvili Nigel Crawford Daria Danilenko Lien Anh Ha Do Marcela Echavarria Angela Gentile Aubree Gordon Terho Heikkinen QSue Huang Sophie Jullien Anand Krishnan Eduardo Luis Lopez Josko Markic Ainara Mira-Iglesias Hannah CMoore Jocelyn Moyes Lawrence Mwananyanda DJames Nokes Faseeha Noordeen Evangeline Obodai Nandhini Palani Candice Romero Vahid Salimi Ashish Satav Euri Seo Zakhar Shchomak Rosalyn Singleton Kirill Stolyarov Sonia K Stoszek Anne von Gottberg Danielle Wurzel Lay-Myint Yoshida chee Fu yung Heather J Zar Harish Nair 张甜甜从兵兵邓舒予不详南京医科大学公共卫生学院江苏南京211166

背景呼吸道合胞病毒(respiratory syncytial virus,RSV)是引起婴幼儿急性下呼吸道感染最常见的病原体。此前估计,2015年全球60月龄以下儿童共发生3 310万次RSV相关急性下呼吸道感染,导致118 200人死亡。此后,几项社区监测研究获得了对RS... 详细信息

背景呼吸道合胞病毒(respiratory syncytial virus,RSV)是引起婴幼儿急性下呼吸道感染最常见的病原体。此前估计,2015年全球60月龄以下儿童共发生3 310万次RSV相关急性下呼吸道感染,导致118 200人死亡。此后,几项社区监测研究获得了对RSV相关社区死亡的更精确估计。本文旨在更新2019年全球、地区和国家层面60月龄以下儿童RSV相关急性下呼吸道感染的发病率和死亡率,重点关注总体死亡率和在研RSV免疫制剂针对的更窄的婴儿年龄组。方法检索获得MEDLINE、Embase、Global Health、CINAHL、Web of Science、LILACS、OpenGrey、中国知网、万方和维普数据库2017—2020年发表文献中的新数据,并纳入RSV GEN合作者提供的未发表数据,以扩展全球RSV疾病负担数据集。纳入的研究符合以下条件:报告了社区中或需要住院治疗的60月龄以下儿童RSV原发性急性下呼吸道感染的数据;报告了至少连续12个月的数据,但院内病死率或RSV季节性定义明确的地区除外;报告了RSV相关急性下呼吸道感染的发病率、住院率、院内病死率或急性下呼吸道感染住院的RSV阳性比例。如果病例定义不明或应用不一致、RSV感染未经实验室确认或仅基于血清学检测、报告的急性下呼吸道感染病例少于50例,则排除该研究。本研究应用广义线性混合效应模型(generalized linear mixed-effects model,GLMM)估计了2019年全球和地区(按国家发展状况和世界银行收入分类)RSV相关急性下呼吸道感染的发病率、住院率和院内病死率;通过基于危险因素的模型估计了国家层面RSV相关急性下呼吸道感染的发病率;通过GLMM开发了新模型,纳入最新的RSV社区死亡率数据,用于估计RSV的总体死亡率。本综述已在PROSPERO注册(CRD42021252400)。结果除了先前综述中纳入的317项研究外,还纳入了113项符合条件的新研究以及51项未发表的研究,共计481项研究。据估计,2019年全球60月龄以下儿童中,共发生3 300万(置信区间为2 540万~4 460万)次RSV相关急性下呼吸道感染,导致360万(290万~460万)例住院、26 300(15 100~49 100)例院内死亡以及101 400(84 500~125 200)例可归因于RSV的总死亡数。在0~6个月的婴儿中,共发生660万(460万~970万)次RSV相关急性下呼吸道感染,导致140万(100万~200万)例住院、13 300(6 800~28 100)例院内死亡以及45 700(38 400~55 900)例可归因于RSV的总死亡数。60月龄以下和28 d~6月龄儿童的死亡中分别有2.0%(置信区间为1.6%~2.4%)和3.6%(3.0%~4.4%)归因于RSV。在各年龄组中,95%以上的RSV相关急性下呼吸道感染事件和97%以上的可归因于RSV的死亡事件都发生在中低收入国家。结论 RSV显著增加了全球60月龄以下儿童的发病和死亡负担,尤其是在出生后前6个月和中低收入国家。本研究强调了全球RSV疾病的总体死亡率负担,60月龄以下儿童中,每50例死亡就有1例可归因于RSV;28 d至6个月大的婴儿中,每28例死亡就有1例可归因于RSV。每1例RSV相关急性下呼吸道感染院内死亡,对应社区中约3例可归因于RSV的死亡。对6月龄内婴儿提供保护的RSV被动免疫计划有望对减轻RSV疾病负担,但实施计划时,仍需要更多数据来了解RSV疾病负担高峰可能向大龄转移的影响。

关键词：呼吸道合胞病毒下呼吸道感染儿童疾病负担住院发病率死亡率病死率模型估计系统分析