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Underwater gas self-transportation along femtosecond laser-written open superhydrophobic surface microchannels(<100μm)for bubble/gas manipulation

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International Journal of Extreme Manufacturing 2022年第1期4卷 35-49页

作者： Jiale Yong Qing Yang Jinglan Huo Xun Hou Feng Chen State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China

Underwater transportation of bubbles and gases has essential applications in manipulating and using gas,but achieving this function at the microscopic level remains a significant ***,we report a strategy to self-transport gas in water along a laser-induced open superhydrophobic microchannel with a width less than 100μ*** femtosecond laser can directly write superhydrophobic and underwater superaerophilic microgrooves on the polytetrafluoroethylene(PTFE)*** water,the single laser-induced microgroove and water medium generate a hollow *** the microchannel connects two superhydrophobic regions in water,the gas spontaneously travels from the small region to the large area along this hollow *** self-transportation can be extended to laser-drilled microholes through a thin PTFE sheet,which can even achieve anti-buoyancy unidirectional *** gas can overcome the bubble’s buoyance and spontaneously travel *** Laplace pressure difference drives the processes of spontaneous gas transportation and unidirectional bubble *** believe the property of gas self-transportation in the femtosecond laser-structured open superhydrophobic and underwater superaerophilic microgrooves/microholes has significant potential applications related to manipulating underwater gas.

关键词： femtosecond laser gas transportation superhydrophobicity underwater superaerophilicity water/gas separation

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Analysis and Simulation of Interference Effects on CSK Modulation systems 15

Analysis and Simulation of Interference Effects on CSK Modul...

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15th International Congress on Image and Signal Processing, BioMedical engineering and Informatics, CISP-BMEI 2022

作者： Guan, Lele Xu, Zhan Tian, Lu Shi, Chenrui School of Information and Communication Engineering Beijing Information Science and Technology University Key Laboratory of Modern Measurement and Control Technology Ministry of Education Beijing China

ISBN: (数字)9781665488877

ISBN: (纸本)9781665488877

As the space environment of information transmission becomes more and more complex, the accuracy of communication becomes a new challenge. In order to study the anti-jamming performance of code shift keying (CSK), this paper mainly simulates the performance of CSK and binary phase shift keying (BPSK) under 5 signal interferences, and discusses it according to the bit error rates (BER) obtained by simulation. In the face of different forms of signal interference, CSK has better anti-jamming performance than BPSK. Under various forms of signal interference, CSK has the strongest anti-interference ability to multi-tone interference, and its anti-interference ability to pulse interference, 50% narrowband interference, single-tone interference and channel noise decreases successively. © 2022 IEEE.

关键词： Binary phase shift keying

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BARN:Behavior-Aware Relation Network for multi-label behavior detection in socially housed macaques

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Zoological Research 2023年第6期44卷 1026-1038页

作者： Sen Yang Zhi-Yuan Chen Ke-Wei Liang Cai-Jie Qin Yang Yang Wen-Xuan Fan Chen-Lu Jie Xi-Bo Ma College of Medicine and Biological Information Engineering Northeastern UniversityShenyangLiaoning 110169China MAIS State Key Laboratory of Multimodal Artificial Intelligence SystemsInstitute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing100049China School of Automation Harbin University of Science and TechnologyHarbinHeilongjiang 150080China

Quantification of behaviors in macaques provides crucial support for various scientific disciplines,including pharmacology,neuroscience,and *** recent advancements in the analysis of macaque behavior,research on multi-label behavior detection in socially housed macaques,including consideration of interactions among them,remains *** the lack of relevant approaches and datasets,we developed the Behavior-Aware Relation Network(BARN)for multi-label behavior detection of socially housed *** approach models the relationship of behavioral similarity between macaques,guided by a behavior-aware module and novel behavior classifier,which is suitable for multi-label *** also constructed a behavior dataset of rhesus macaques using ordinary RGB cameras mounted outside their *** dataset included 65?913 labels for19 behaviors and 60?367 proposals,including identities and locations of the *** results showed that BARN significantly improved the baseline SlowFast network and outperformed existing relation *** conclusion,we successfully achieved multilabel behavior detection of socially housed macaques with both economic efficiency and high accuracy.

关键词： Macaque behavior Drug safety assessment Multi-label behavior detection Behavioral similarity Relation network

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Asymptotic Analysis of Modified Erlang-B System with Sensing Time and Stochastic Loss of Secondary Users 15th

Asymptotic Analysis of Modified Erlang-B System with Sensi...

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15th International Conference on Performance Evaluation Methodologies and Tools, VALUETOOLS 2022

作者： Abe, Kazuma Phung-Duc, Tuan Graduate School of Science and Technology University of Tsukuba 1-1-1 Tennoudai Ibaraki Tsukuba Japan Institute of Systems and Information Engineering University of Tsukuba Tsukuba Japan

ISBN: (纸本)9783031312335

This paper considers a modified Erlang-B model for cognitive radio networks with both primary users (PUs) and secondary users (SUs). PUs have absolute priority over SUs, and are blocked whenever all channels are used by other PUs upon their arrivals. SUs must sense an idle channel upon their arrivals. If, after sensing, an SU finds an idle channel, it can occupy the channel immediately;otherwise, the SU may either sense again or leave the system forever. Under Poisson arrival assumptions (both PUs and SUs) and exponential sensing and service times, we formulate the system as a three-dimensional Markov chain, and consider an asymptotic regime when the sensing rate is extremely low. We prove that a scaled version of the number of sensing SUs converges to a deterministic process. Furthermore, we prove that the deterministic process has a unique stationary point which we use to approximate the mean number of sensing SUs and the distribution of the states of the channels. Numerical examples reveal that these approximations are highly accurate when the sensing rate is low. © 2023, ICST Institute for Computer sciences, Social Informatics and Telecommunications engineering.

关键词： Asymptotic analysis

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An Efficient and Lightweight Commitment Scheme for IoT Data Streams 19

An Efficient and Lightweight Commitment Scheme for IoT Data ...

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19th Annual International Conference on Distributed Computing in Smart systems and the Internet of Things, DCOSS-IoT 2023

作者： Katsika, Angeliki Papageorgiou, Konstantinos Fakis, Alexandros Plagianakos, Vassilis Spathoulas, Georgios University of Thessaly Department of Computer Science and Biomedical Informatics Lamia Greece University of the Aegean Department of Information and Communication Systems Engineering Samos Greece Department of Information Security and Communication Technology Gjøvik Norway

ISBN: (纸本)9798350346497

Data integrity is a crucial property for offering Internet of Things (IoT) services. Usually, this is achieved by assuming a high level of trust in the service provider, a practice that induces negative implications. In the present paper, an efficient and lightweight commitment scheme for IoT data streams is presented. The proposed scheme combines KZG polynomial commitments and a blockchain smart contract to enable full data integrity while requiring trust only at the IoT device level. Given that the IoT device operates properly, no tampering can happen at any other point of the IoT workflow, without being noticed, while the protocol offers the option for automated settlement of cases where the operator tampers with users' data. A number of experiments have been conducted to assess the computation/gas fees requirements of the scheme and validate its real-world applicability. © 2023 IEEE.

关键词： Internet of things

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Design of a lightweight and easy-to-wear hand glove with multi-modal tactile perception for digital human

Design of a lightweight and easy-to-wear hand glove with mul...

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作者： Pan, Zhigeng Ren, Hongyi Liu, Chang Chen, Ming Mukherjee, Mithun Yang, Wenzhen School of Artificial Intelligence Nanjing University of Information Science and Technology Nanjing China Center for Space-based Computing Systems Zhejiang Laboratory Hangzhou China College of Mechanical Engineering Zhejiang Sci-Tech University Zhejiang Sci-Tech University Hangzhou China Center for Intelligent Manufacturing Computing Zhejiang Laboratory Hangzhou China

Within the field of human–computer interaction, data gloves play an essential role in establishing a connection between virtual and physical environments for the realization of digital human. To enhance the credibility of human-virtual hand interactions, we aim to develop a system incorporating a data glove-embedded technology. Our proposed system collects a wide range of information (temperature, bending, and pressure of fingers) that arise during natural interactions and afterwards reproduce them within the virtual environment. Furthermore, we implement a novel traversal polling technique to facilitate the streamlined aggregation of multi-channel sensors. This mitigates the hardware complexity of the embedded system. The experimental results indicate that the data glove demonstrates a high degree of precision in acquiring real-time hand interaction information, as well as effectively displaying hand posture in real-time using Unity3D. The data glove's lightweight and compact design facilitates its versatile utilization in virtual reality interactions. © 2024 John Wiley & Sons Ltd.

关键词： Virtual reality

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Safety Benefits Evaluation of Mixed Traffic Flow with Connected and Automated Vehicles under Snowy Conditions 7

Safety Benefits Evaluation of Mixed Traffic Flow with Connec...

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7th IEEE International Conference on Transportation information and Safety, ICTIS 2023

作者： Lu, Zhaoyou Ding, Naikan Gao, Jin Fu, Chuanyun Zhang, Hui Key Laboratory of Operation Safety Technology on Transport Vehicles Ministry of Transport Beijing China School of Transportation Science and Engineering Harbin Institute of Technology Beijing China Intelligent Transportation Systems Research Center Wuhan University of Technology Wuhan China Engineering Research Center of Transportation Information and Safety Ministry of Education Wuhan China

ISBN: (纸本)9798350308532

Connected and automated vehicles are widely agreed to bring tremendous benefits to the traffic system. But the understanding of them is still challenging due to the complexity of the mixed traffic flow of human-driven (HDVs), automated vehicles (AVs), and connected and automated vehicles (CAVs), and due to our limited knowledge of the impacts of adverse weather conditions. Given this, this study was driven to test the safety performance of the above mixed traffic flow both in sunny and snowy conditions under various market penetration rates (MPRs) using SUMO. Minimum gap, the acceleration/deceleration ability of vehicles, and the drivers' desired (minimum) time headway were specifically calibrated for car-following behaviors by a Kolmogorov-Smirnov test based on data collected at an intersection in China. Three surrogate safety measures, i.e., time to collision (TTC), Time-Exposed TTC (TET), and brake rate (BR), were utilized to evaluate the real-time crash risk variations. The results show that 1) the safety performance improved in sunny and snowy conditions when the traffic flow was mixed with AVs and CAVs;2) the improvement of AVs and CAVs in avoiding serious conflicts was more significant in the snowy condition, and 3) the performance of the braking rate was different when MPRs increased in the sunny and snowy conditions. In addition, the difference in safety benefits between AVs and CAVs in sunny and snowy conditions was analyzed. The findings of this study provide valuable insights for managing connected and automated traffic under the snowy condition on urban roads. © 2023 IEEE.

关键词： Risk assessment

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Efficient Certificateless Authenticated Key Agreement for Blockchain-Enabled Internet of Medical Things

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Computers, Materials & Continua 2023年第4期75卷 2043-2059页

作者： Chaoyang Li Yanbu Guo Mianxiong Dong Gang Xu Xiu-Bo Chen Jian Li Kaoru Ota College of Software Engineering Zhengzhou University of Light IndustryZhengzhou450002China Department of Sciences and Informatics Muroran Institution of TechnologyMuroran050-8585Japan School of Computing Science and Technology North China University of TechnologyBeijing100144China Information Security Centre State Key Laboratory of Networking and Switching TechnologyBeijing University of Post and TelecommunicationsBeijing100876China

Internet of Medical Things(IoMT)plays an essential role in collecting and managing personal medical *** recent years,blockchain technology has put power in traditional IoMT systems for data sharing between different medical institutions and improved the utilization of medical ***,some problems in the information transfer process between wireless medical devices and mobile medical apps,such as information leakage and privacy *** paper first designs a cross-device key agreement model for blockchain-enabled *** model can establish a key agreement mechanism for secure medical data ***,a certificateless authenticated key agreement(KA)protocol has been proposed to strengthen the information transfer security in the cross-device key agreement *** proposed KA protocol only requires one exchange of messages between the two parties,which can improve the protocol execution ***,any unauthorized tampering of the transmitted signed message sent by the sender can be detected by the receiver,so this can guarantee the success of the establishment of a session key between the strange *** blockchain ledger can ensure that the medical data cannot be tampered with,and the certificateless mechanism can weaken the key escrow ***,the security proof and performance analysis are given,which show that the proposed model and KA protocol are more secure and efficient than other schemes in similar literature.

关键词： Certificateless key agreement authentication blockchain internet of medical things

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Weak Acetylene Adsorption Terminated Carbon-Carbon Coupling Kinetics on Silver Electrocatalysts

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CCS Chemistry 2023年第1期5卷 200-208页

作者： Rui Bai Jinjin Li Jin Lin Zhenpeng Liu Chen Yan Lei Zhang Jian Zhang Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710129 State Key Laboratory of Solidification Processing and School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’anShaanxi 710072

Owing to serious poison of downstream olefin polymerization catalysts from acetylene impurities,selective reduction of acetylene to ethylene is a pivotal process in petrochemical ***,during thermocatalytic and electrocatalytic acetylene semihydrogenation,acetylene C-C coupling inevitably occurs on current *** resultant oligomeric species(particularly long-chain hydrocarbons)block active sites and mass transportation,and eventually decrease catalytic activity and *** this work,we report Ag nanowires(NWs)as high-performance electrocatalysts for acetylene semihydrogenation,where the C-C coupling is unprecedentedly suppressed by weakening acetylene *** pure acetylene,1,3-butadiene Faradaic efficiency(FE)of Ag NWs is only 2.1%,which is far lower than 41.2%for Cu nanoparticles at−0.2 V versus reversible hydrsogen *** partial current density of Ag NWs reaches 217 mA/cm^(2)at 0.85 V,which is considerably higher than those for state-of-the-art Cu-based ***,no 1,3-butadiene is produced on Ag NWs in a large two-electrode flow cell fed with crude ethylene containing 1 vol%acetylene,presenting thorough termination of acetylene C-C *** situ electrochemical Raman spectroscopy and theoretical investigations reveal that weak acetylene adsorption on Ag surfaces is intrinsically responsible for prohibiting their *** work will spark the rapid development of high-performance and stable electrocatalysts for reducing alkynes to olefins.

关键词： acetylene electrocatalysis carbon-carbon coupling semihydrogenation silver nanowires

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Collaboration of AI with Project Management

Collaboration of AI with Project Management

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IT Innovation and Knowledge Discovery (ITIKD), International Conference on

作者： J Jagannathan S Kanishka S Thanushree M S Bhuvaneswari School of Computer Science Engineering and Information Systems Vellore Institute of Technology Vellore TamilNadu India

ISBN: (数字)9798350355468

ISBN: (纸本)9798350355475

In the area of driving technologies, synthetic intelligence (AI) is unexpectedly growing, and is opening manner for a future that's mostly led using the technology. Project control constitutes a crucial role in the modern and fast-changing environment. This paper focuses on the relationship between Artificial intelligence and Human Intelligence in performing control, with a view to identifying challenges and recommending appropriate solutions and approaches. The efficiency of AI and human collaboration for the enhancement of adaptive project management in dynamic environments. It works to combine the talents of human beings and the practicality of advanced computation to improve enterprise management. Dealing with the jobs at the same time in the changing environment is one of the large aspects that are involved in the control in undertaking and the same has been highlighted in the trouble statement. Project managers can turn out to be extra adaptable through the usage of both human creativity and synthetic intelligence ability in complicated situations, which regularly present challenging issues.

关键词： Technological innovation Ethics Systematics Protocols Human intelligence Project management Pressing Knowledge discovery Teamwork Artificial intelligence

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