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Fjord-Type AIEgens Based on Inherent Through-Space Conjugation

CCS Chemistry 2024年第7期6卷 1739-1747页

作者： Ye-Qiang Han Yuan Xie Jianyu zhang Shiyu Tan Haoke zhang Ben Zhong Tang jonathan L.Sessler Feihe Huang Stoddart Institute of Molecular Science Department of ChemistryZhejiang UniversityHangzhou 310058 Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials ZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 311215 MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310058 Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518061 Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and TechnologyKowloonHong Kong 999077 School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhen(CUHK-Shenzhen)Guangzhou 518172 Department of Chemistry The University of Texas at AustinAustinTexas 78712-1224 Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001

Through-space conjugation(TSC)is a noncovalently electronic interaction that is emerging as a potential complement to through-bond conjugation(TBC)-based strategies for constructing luminescent ***,the design of efficient luminogens based on TSC is currently challenging due to a lack of established structure-property *** is particularly true in the case of luminogens displaying aggregation-induced emission(AIE)*** this work,three terphenyl derivatives were prepared,and their photophysical properties were systemically *** was found that relative to the corresponding m-and p-linked analogues,the electronic interaction of TBC is weakened while the strength of TSC is commensurately enhanced in the constitutional isomer containing an o-linked fjordtype *** this set of luminogens,the presence of a fjord-type arrangement promotes a transformation from aggregation-caused quenching to *** investigations involving congeneric quaterphenyl and pentphenyl isomers support the universality of the fjord-type unit as a framework for synthesizing AIE-active luminogens(AIEgens)with inherent *** work not only provides a novel set of AIEgens but also establishes the utility of TSC in controlling the photophysical properties of nonconventional and twisted luminogens.

关键词： fjord-type through-space conjugation through-bond conjugation aggregation-induced emission luminescence twisted conformation

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The 2^(nd)Asian Conference on Porphyrins,Phthalocyanines and Related Materials

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Chinese Chemical Letters 2024年第7期35卷 1-3页

作者： Gaojie Zhu Zhen Yang Shijun Li Weihua Zhu Rui Cao Junlong zhang Jianzhang Zhao jonathan L.Sessler Xunjin Zhu Jianxin Song Yongshu Xie Jianzhuang Jiang Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of EducationHangzhou Normal UniversityHangzhou 311121China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an 710119China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China Department of Chemistry The University of TexasAustinTexas 78712-1224United States Department of Chemistry and Institute of Advanced Materials Hong Kong Baptist UniversityHong Kong 999077China Key Laboratory of Chemical Biology and Traditional Chinese Medicine(Ministry of Educational of China) Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceCollege of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China

In the past decades,porphyrins,phthalocyanines and related materials have attracted significant attention due to their diverse and brilliant structures[1,2],as well as their unique electronic structures and photophysi... 详细信息

关键词： cyanine phthalocyanine Porphyrin

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Simplified Fast Transient Control in Coolerless Pump EDFA for Metro Applications

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光学学报 2003年第S1期23卷 -页

作者： J.J. Pan Wei Wang Xiangdong Qiu Mingjie zhang Kejian Guan Joy Jiang jonathan zhang Lightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USALightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USALightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USALightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USALightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USALightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USALightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USA

A novel optical transient suppression technique to dramatically reduce gain variation of EDFA with un-cooled pump is demonstrated experimentally, showing excellent performance of 50us transient time with no more than ... 详细信息

关键词： EDFA of Simplified Fast Transient Control in Coolerless Pump EDFA for Metro Applications for in

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High-speed silicon photonic electro-optic Kerr modulation

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Photonics Research 2024年第1期12卷 51-60页

作者： jonathan PELTIER WEIWEI zhang LEOPOLD VIROT CHRISTIAN LAFFORGUE LUCAS DENIEL DELPHINE MARRIS-MORINI GUY AUBIN FARAH AMAR DENH TRAN XINGZHAO YAN CALLUM G.LITTLEJOHNS CARLOS ALONSO-RAMOS KE LI DAVID J.THOMSON GRAHAM REED LAURENT VIVIEN University Paris-Saclay CNRSCentre for Nanoscience and Nanotechnology(C2N)Palaiseau 91120France University Grenoble Alpes CEALETIGrenoble 38000France Optoelectronics Research Centre Zepler Institute for Photonics and NanoelectronicsFaculty of Engineering and Physical SciencesUniversity of SouthamptonSouthampton SO171BJUK

Silicon-based electro-optic modulators contribute to easing the integration of high-speed and low-power consumption circuits for classical optical communications and data *** the plasma dispersion modulation,an alternative solution in silicon is to exploit the DC Kerr effect,which generates an equivalent linear electro-optical effect enabled by applying a large DC electric *** some theoretical and experimental studies have shown its existence in silicon,limited contributions relative to plasma dispersion have been achieved in high-speed modulation so *** paper presents high-speed optical modulation based on the DC Kerr effect in silicon PIN *** contributions of both plasma dispersion and Kerr effects have been analyzed in different waveguide configurations,and we demonstrated that the Kerr induced modulation is dominant when a high external DC electric field is applied in PIN ***-speed optical modulation response is analyzed,and eye diagrams up to 80 Gbit/s in NRZ format are obtained under a *** of 30 *** work paves the way to exploit the Kerr effect to generate high-speed Pockels-like optical modulation.

关键词： waveguide dispersion effect

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A unique subseafloor microbiosphere in the Mariana Trench driven by episodic sedimentation

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Marine Life Science & Technology 2024年第1期6卷 168-181页

作者： Jiwen Liu Da-Wei Li Xinxin He Ronghua Liu Haojin Cheng Chenglong Su Mengna Chen Yonghong Wang Zhongsheng Zhao Hanyue Xu zhangyu Cheng Zicheng Wang Nikolai Pedentchouk David J.Lea-Smith jonathan D.Todd Xiaoshou Liu Meixun Zhao Xiao-Hua zhang Frontiers Science Center for Deep Ocean Multispheres and Earth System and College of Marine Life SciencesOcean University of ChinaQingdao 266003China Laboratory for Marine Ecology and Environmental Science Laoshan LaboratoryQingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of ChinaQingdao 266100China Key Lab of Submarine Geosciences and Prospecting Techniques Ministry of Education/College of Marine GeosciencesOcean University of ChinaQingdao 266100China Key Laboratory of Physical Oceanography Ministry of Education/Research Vessel CentreOcean University of ChinaQingdao 266100China School of Environmental Sciences University of East AngliaNorwich NR47TJUK School of Biological Sciences University of East AngliaNorwich NR47TJUK

Hadal trenches are characterized by enhanced and infrequent high-rate episodic sedimentation events that likely introduce not only labile organic carbon and key nutrients but also new microbes that significantly alter the subseafloor ***,the role of high-rate episodic sedimentation in controlling the composition of the hadal subseafloor microbiosphere is ***,analyses of carbon isotope composition in a~750 cm long sediment core from the Challenger Deep revealed noncontinuous deposition,with anomalous ^(14)C ages likely caused by seismically driven mass transport and the funneling effect of trench *** community composition and diverse enzyme activities in the upper~27 cm differed from those at lower depths,probably due to sudden sediment deposition and differences in redox condition and organic matter *** lower depths,microbial population numbers,and composition remained relatively constant,except at some discrete depths with altered enzyme activity and microbial phyla abundance,possibly due to additional sudden sedimentation events of different *** is provided of a unique role for high-rate episodic sedimentation events in controlling the subsurface microbiosphere in Earth’s deepest ocean floor and highlight the need to perform thorough analysis over a large depth range to characterize hadal benthic *** depositional processes are likely crucial in shaping deep-water geochemical environments and thereby the deep subseafloor biosphere.

关键词： Hadal subseafloor Deep water sediment Mariana Trench Radiocarbon Microbial community Redox potential

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High Channel Count, Low Cost, Multiplexed FBG Sensor Systems

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光学学报 2003年第S1期23卷 -页

作者： J. J. Pan FengQing Zhou Kejian Guan Joy Jiang Liang Dong Albert Li Xiangdong Qiu jonathan zhang Lightwaves 2020 Inc. 1323 Great Mall Drive Milpitas CA 95035 USA

With rich products development experience in WDM telecommunication networks, we introduce a few of high channel count, multiplexed FBG fiber optic sensor systems featured in reliable high performance and low cost.

关键词： telecommunication networks fiber optic sensor high performance low cost

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奢侈品市场中社会阶层与炫耀性消费的关系

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珞珈管理评论 2017年第1期20卷 132-145页

作者：孙怡李杰 jonathan zhang 孙立本上海交通大学安泰经管学院美国华盛顿大学麦克·福斯特商学院

本研究从社会阶层的视角出发,针对社会上层与社会中层群体,旨在探索不同社会阶层的消费者在奢侈品消费过程中的不同炫耀性消费倾向。本研究对200多位被测试者进行了两次情景模拟实验,结果发现社会阶层较高的消费者比社会阶层较低的消费... 详细信息

本研究从社会阶层的视角出发,针对社会上层与社会中层群体,旨在探索不同社会阶层的消费者在奢侈品消费过程中的不同炫耀性消费倾向。本研究对200多位被测试者进行了两次情景模拟实验,结果发现社会阶层较高的消费者比社会阶层较低的消费者的炫耀性消费倾向弱,并且通过自我—品牌联系理论解释了这种的差异。本研究的创新之处在于明确地将社会阶层和奢侈品消费者联系在一起,不同于传统的信号理论观点,本文从其他角度解释了奢侈品消费的差异。本研究结论可以为奢侈品公司战略定位的进一步明确提供指导性建议,并帮助奢侈品公司面向不同社会阶层消费者时,优化其广告投放。

关键词：社会阶层奢侈品消费炫耀性消费自我-品牌联系

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Deep Reinforcement Learning-Based Resource Allocation for UAV-Enabled Federated Edge Learning

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Journal of Communications and Information Networks 2023年第1期8卷 1-12页

作者： Tianze Liu Tiankui zhang jonathan Loo Yapeng Wang School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China School of Computing and Engineering University of West LondonLondon W55RFUK Faculty of Applied Sciences Macao Polytechnic UniversityMacao 999078China

The resource allocation of the federated learning(FL)for unmanned aerial vehicle(UAV)swarm systems are *** UAV swarms based on FL realize the artificial intelligence(AI)applications by means of distributed training on the basis of ensuring the security of private ***,the direct application of the FL in UAV swarms will incur high ***,in this article,we consider the resource allocation problem in FL for UAV *** avoid the high communication overhead between UAVs and the central server,we proposed an FL framework for UAV swarms based on mobile edge computing(MEC)in which model aggregation is migrated to edge *** the proposed framework,the total cost of the FL is defined as the weighted sum of the total delay of UAV swarms to complete the FL and system energy *** order to minimize the total cost of FL,we propose a resource allocation algorithm for joint optimization of computing resources and multi-UAV association based on deep reinforcement learning(DRL).The simulation result shows that:(1)compared with the benchmark algorithm,the proposed algorithm can effectively reduce the total cost of FL;(2)the proposed algorithm can realize the trade-off between task completion delay and system energy consumption through weight changes.

关键词： DRL FL MEC UAV

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Joint task scheduling and multi-UAV deployment for aerial computing in emergency communication networks

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Science China(Information Sciences) 2023年第9期66卷 239-258页

作者： Tiankui zhang Chaobin CHEN Yu XU jonathan LOO Wenjun XU School of Information and Communication Engineering Beijing University of Posts and Telecommunications School of Computing and Engineering University of West London School of Artificial Intelligence Beijing University of Posts and Telecommunications

This article studies mobile edge computing technologies enabled by unmanned aerial vehicles(UAVs) in disasters. First, considering that the ground servers may be damaged in emergency scenarios, we proposed an air-ground cooperation architecture based on ad-hoc UAV networks. We defined the system cost as the weighted sum of task delay and energy consumption because of different delay sensitivity and energy sensitivity tasks in emergency communication networks. Then, we formulated the system cost-minimization problem of task scheduling and multi-UAV deployments. To solve the proposed mixed integer nonlinear programming problem, we decomposed it to two sub-problems that were solved by proposing a swap matchingbased task scheduling sub-algorithm and a successive convex approximation-based multi-UAV deployment sub-algorithm. Accordingly, we propose a joint optimization algorithm by iterating the two sub-algorithms to obtain a low complexity sub-optimal solution. Finally, the simulation results show that(i) the proposed algorithm converges in several iterations, and(ii) compared with the benchmark algorithms, the proposed algorithm has better performance of reducing task delay and energy consumption and achieves a good tradeoff between them for diverse tasks.

关键词： emergency communication mobile edge computing swap matching algorithm unmanned aerial vehicle

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英国文化唯物主义批评的思想轨迹:缘起、论争与转型

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当代外国文学 2024年第1期45卷 141-148页

作者：张欢首都师范大学外国语学院

英国文化唯物主义批评自20世纪80年代问世以来,就被与新历史主义并置甚至等同。但英国文化唯物主义批评自身的独特性却不容忽视:它的诞生背景带有英国新左派思潮的独特烙印,内部论争彰显了其有别于新历史主义的激进政治底色,性别研究转... 详细信息

英国文化唯物主义批评自20世纪80年代问世以来,就被与新历史主义并置甚至等同。但英国文化唯物主义批评自身的独特性却不容忽视:它的诞生背景带有英国新左派思潮的独特烙印,内部论争彰显了其有别于新历史主义的激进政治底色,性别研究转向具备理论建构性并且遵循英国后结构主义身份政治的演进逻辑。因此,本文尝试从思想缘起、内部论争与范式转型三个节点,追溯英国文化唯物主义批评的思想轨迹。这不仅有利于破除将文化唯物主义视为新历史主义分支的偏见,亦可彰显英国马克思主义文学批评的独特内涵与思想发展路径。

关键词：文化唯物主义新历史主义多利莫尔贝尔西英国马克思主义批评

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