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Nano Research 2024年第3期17卷 1913-1922页

作者： Minying Wu Bin Chen Xueliang Fan tong ye Yuanyuan Fang Qian Zhang Fangzhou Zhou Yajun Wang Yi Tang department of Chemistry Fudan UniversityShanghai 200433China College of Chemistry&Materials engineering Wenzhou UniversityWenzhou 325027China

Organohydrogels have demonstrated superior environmental adaptability and frost resistance compared to conventional hydrogels,thereby prompting considerable interests in the development and design of innovative ***,we report an effective one-pot method for fabricating MXene/polyacrylamide(MXene/PAM)composite organohydrogel(MAOH)by employing Ga liquid metals(Ga LMs)as a highly reactive component in the induced free radical polymerization reaction,without the need for additional heating or cross-linking *** synthetic protocol addresses the time-consuming and organic solvent waste concerns associated with traditional solvent displacement methods for organohydrogel *** incorporation of MXene not only highly enhances the conductivity but also confers improved mechanical properties of *** MAOH exhibits excellent environmental adaptability(>7 d),sustained moisture retention,remarkable self-healing capabilities,and outstanding mechanical properties under low temperatures(-20℃).It demonstrates exceptional performance in micro-motion monitoring,rapid response time(125 ms),superior stretchability,and a broad range of strains(0.3%–600%).Therefore,the designed MAOH has great potential for applications in diverse fields such as prosthetics,electronic skin,human–machine interaction,and smart terminals.

关键词： organohydrogels MXene conductivity mechanical properties environmental adaptability

Computational model for perception of objects and motions

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Science china(Life Sciences) 2008年第6期51卷 526-536页

作者： YANG WenLu1,2, ZHANG LiQing1 & MA LiBo1 1 department of Computer Science and engineering, shanghai jiao tong university, shanghai 200240, china 2 department of electronic engineering, shanghai Maritime university, shanghai 200135, china department of Computer Science and engineering Shanghai Jiao Tong University Shanghai China department of electronic engineering Shanghai Maritime University Shanghai China

Perception of objects and motions in the visual scene is one of the basic problems in the visual system. There exist 'What' and 'Where' pathways in the superior visual cortex, starting from the simple cells in the primary visual cortex. The former is able to perceive objects such as forms, color, and texture, and the latter perceives 'where', for example, velocity and direction of spatial movement of objects. This paper explores brain-like computational architectures of visual information processing. We propose a visual perceptual model and computational mechanism for training the perceptual model. The compu- tational model is a three-layer network. The first layer is the input layer which is used to receive the stimuli from natural environments. The second layer is designed for representing the internal neural information. The connections between the first layer and the second layer, called the receptive fields of neurons, are self-adaptively learned based on principle of sparse neural representation. To this end, we introduce Kullback-Leibler divergence as the measure of independence between neural responses and derive the learning algorithm based on minimizing the cost function. The proposed algorithm is applied to train the basis functions, namely receptive fields, which are localized, oriented, and bandpassed. The resultant receptive fields of neurons in the second layer have the characteristics resembling that of simple cells in the primary visual cortex. Based on these basis functions, we further construct the third layer for perception of what and where in the superior visual cortex. The proposed model is able to perceive objects and their motions with a high accuracy and strong robustness against additive noise. Computer simulation results in the final section show the feasibility of the proposed perceptual model and high efficiency of the learning algorithm.

关键词： visual perception visual cortex computational model receptive fields simple cells complex cells

Overcoming the Limits of Cross-Sensitivity:Pattern Recognition Methods for Chemiresistive Gas Sensor Array

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Nano-Micro Letters 2024年第12期16卷 285-341页

作者： Haixia Mei Jingyi Peng Tao Wang Tingting Zhou Hongran Zhao tong Zhang Zhi Yang Key Lab Intelligent Rehabil&Barrier Free Disable(Ministry of Education) Changchun UniversityChangchun 130022People’s Republic of China shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China National Key Laboratory of Advanced Micro and Nano Manufacture Technology Department of Micro/Nano ElectronicsSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China

As information acquisition terminals for artificial olfaction,chemiresistive gas sensors are often troubled by their cross-sensitivity,and reducing their cross-response to ambient gases has always been a difficult and important point in the gas sensing *** recognition based on sensor array is the most conspicuous way to overcome the cross-sensitivity of gas *** is crucial to choose an appropriate pattern recognition method for enhancing data analysis,reducing errors and improving system reliability,obtaining better classification or gas concentration prediction *** this review,we analyze the sensing mechanism of crosssensitivity for chemiresistive gas *** further examine the types,working principles,characteristics,and applicable gas detection range of pattern recognition algorithms utilized in gas-sensing ***,we report,summarize,and evaluate the outstanding and novel advancements in pattern recognition methods for gas *** the same time,this work showcases the recent advancements in utilizing these methods for gas identification,particularly within three crucial domains:ensuring food safety,monitoring the environment,and aiding in medical *** conclusion,this study anticipates future research prospects by considering the existing landscape and *** is hoped that this work will make a positive contribution towards mitigating cross-sensitivity in gas-sensitive devices and offer valuable insights for algorithm selection in gas recognition applications.

关键词： Pattern recognition Sensor array Chemiresistive gas sensor Cross-sensitivity Artificial olfactory

s-ordering operator expansions of quantum-mechanical fundamental representations and their applications

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Science china(Physics,Mechanics & Astronomy) 2011年第12期54卷 2150-2154页

作者： FAN HongYi 1,3 , XU yeJun 2 & YUAN HongChun 3,4 1 department of Materials Science and engineering, university of Science and Technology of china, Hefei 230026, china 2 department of Physics electronic and engineering, Chizhou university, Chizhou 247000, china 3 department of Physics, shanghai jiao tong university, shanghai 200030, china 4 College of Optoelectronic engineering, Changzhou Institute of Technology, Changzhou 213002, china department of Materials Science and engineering University of Science and Technology of China Hefei China department of Physics Shanghai Jiao Tong University Shanghai China department of Physics electronic and engineering Chizhou University Chizhou China College of Optoelectronic engineering Changzhou Institute of Technology Changzhou China

We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering operator expansion, which is elegant in form and has many applications in deriving new operator identities. This demonstrates that Dirac's symbolic method can be merged into Newton-Leibniz integration theory in a broad way.

关键词： s-ordering operator expansion operator identities quantum mechanical representation

General Attribute Based RBAC Model for Web Services

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Wuhan university Journal of Natural Sciences 2008年第1期13卷 81-86页

作者： ZHU Yiqun LI Jianhua ZHANG Quanhai department of electronic engineering Shanghai Jiao Tong University Shanghai 200030 China

Growing numbers of users and many access policies that involve many different resource attributes in service-oriented environments cause various problems in protecting resource. This paper analyzes the relationships of resource attributes to user attributes based on access policies for Web services, and proposes a general attribute based role-based access control（GARBAC） model. The model introduces the notions of single attribute expression, composite attribute expression, and composition permission, defines a set of elements and relations among its elements and makes a set of rules, assigns roles to user by inputing user＇s attributes values. The model is a general access control model, can support more granularity resource information and rich access control policies, also can be used to wider application for services. The paper also describes how to use the GARBAC model in Web services environments.

关键词： attribute rule user-role assignment role-based access control (RBAC) access policy

SYNCHRONIZATION IN COMPLEX DYNAMICAL NETWORKS

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Journal of Systems Science & Complexity 2003年第3期16卷 358-371页

作者： WANGXiaofan CHENGuanrong Automation ShanghaiYiaoTongUniversityShanghai200030China HongKong HongKongChina

In the past few years, the discovery of small-world and scale-free properties of many natural and artificial complex networks has stimulated increasing interest in further studying the underlying organizing principles of various complex networks. This has led to significant advances in understanding the relationship between the topology and the dynamics of such complex networks. This paper reviews some recent research works on the synchronization phenomenon in various dynamical networks with small-world and scale-free connections.

关键词： complex network synchronization stability control

Aptamer-Based Cell-Surface Profiling with Single-Cell Resolution Enables Precise Cancer Characterization

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CCS Chemistry 2024年第1期6卷 196-207页

作者： Liujun Xu Yawei Feng tong Wang Shenhuan Li Kangli Xu Yue Sun Yi Luo Yishan ye Yan Miao Yun Dong Zhenzhen Guo Qing Zhang Benshang Li He Huang Xue-Qiang Wang Liping Qiu Weihong Tan Molecular Science and Biomedicine Laboratory State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangshaHunan 410082 The Key Laboratory of Zhejiang Province for Aptamers and Theranostics Zhejiang Cancer HospitalHangzhou Institute of MedicineChinese Academy of SciencesHangzhouZhejiang 310022 Institute of Molecular Medicine Renji HospitalShanghai Jiao Tong University School of MedicineCollege of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240 Bone Marrow Transplantation Center The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003 Institute of Hematology Zhejiang UniversityHangzhou 310003 department of Hematology and Oncology Shanghai Children’s Medical CenterShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200127

Molecular profiling of cell-surface proteins is a powerful strategy for precise cancer *** mass cytometry(MC)enables synchronous detection of over 40 cellular parameters,its full potential in disease classification is challenged by the limited types of recognition probes currently *** this work,we synthesize a panel of heavy isotopeconjugated aptamers to profile cancer-associated signatures on the surface of hematological malignancy(HM)*** on 15 molecular signatures,we performed cell-surface profiling that allowed the precise classification of 8 HM cell *** with machine-learning technology,this aptamer-based MC platform also achieved multiclass identification of HM subtypes in clinical sampleswith 100%accuracy in the training cohort and 80%accuracy in the test ***,we report an effective and practical strategy for precise cancer classification at the singlecell level,paving the way for its clinical use in the near future.

关键词： molecular profiling cancer diagnosis mass cytometry aptamers machine learning

IMPACE ON SURROUNDINGS DURING LARGE AREA EXCAVATION IN shanghai SOFT DEPOSIT

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IMPACE ON SURROUNDINGS DURING LARGE AREA EXCAVATION IN SHANG...

Network Security Policy for Large-Scale VPN

中日岩土工程学术会议

作者： ye-SHUANG Xu SHUI-LONG SHEN SHOU-JI Du and XIAO-MING PANG Master Student department of Civil engineering shanghai jiao tong university shanghai 200030 china Professor department of Civil engineering shanghai jiao tong university shanghai 200030 china Assoc Professor department of Civil engineering shanghai jiao tong university shanghai 200030 china Master Student department of Civil engineering shanghai jiao tong university shanghai 200030 china

＜正＞ This paper presents a case history of ground movement around an excavated pit of a building basement in shanghai. The excavated area is about 15300m . The excavation is divided into three parts with the depth of 5.6m, 13.5m and 27.35m, respectively. The total excavated volume of soil is about 1.6×105m3. The excavation lasted for 153 days. The retaining system includes soil-nailing supported retaining wall and drilled and cast-in-site pile wall. Around the excavated pit, there exist two reclaimed river ways. There exist many lifelines such as telephone cables, gas pipes, water supply and sewerage drainage pipes and electricity pipes. The lateral displacement and settlement around the excavated pit were presented at first. Then, discussions were conducted on the influential factors on the behavior of soil-nailed wall.

关键词： Retaining Wall Deep Mixed Wall Soil Nailing Deep Excavation Ground Movement

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Network Security Policy for Large-Scale VPN