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科技中国 2016年第5期 13-22页

作者： Ian Stewart Debapratim De alex cole 杨超不详华中科技大学公共管理学院

长期以来，技术推动进步一直是主流观点。每一代人都比他们的上一代人更能感受到生活标准的提高，从蒸汽机到抗生素、大众旅游、电视机和通信等各种创新不断改变了人们的生活，这一切都使得进步有迹可循。

关键词：技术机器抗生素蒸汽机电视机生活

Theoretical and Experimental Investigation of Driver Noncooperative-Game Steering Control Behavior

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IEEE/CAA Journal of Automatica Sinica 2021年第1期8卷 189-205页

作者： Xiaoxiang Na David cole the Department of Engineering University of CambridgeCambridge CB21PZUK

This paper investigates two noncooperative-game strategies which may be used to represent a human driver's steering control behavior in response to vehicle automated steering *** first strategy,namely the Nash strategy is derived based on the assumption that a Nash equilibrium is reached in a noncooperative game of vehicle path-following control involving a driver and a vehicle automated steering *** second one,namely the Stackelberg strategy is derived based on the assumption that a Stackelberg equilibrium is reached in a similar context.A simulation study is performed to study the differences between the two proposed noncooperativegame *** experiment using a fixed-base driving simulator is carried out to measure six test drivers'steering behavior in response to vehicle automated steering *** Nash strategy is then fitted to measured driver steering wheel angles following a model identification *** weight parameters involved in the Nash strategy are *** is found that the proposed Nash strategy with the identified control weights is capable of representing the trend of measured driver steering behavior and vehicle lateral *** is also found that the proposed Nash strategy is superior to the classic driver steering control strategy which has widely been used for modeling driver steering control over the past.A discussion on improving automated steering control using the gained knowledge of driver noncooperative-game steering control behavior was made.

关键词： Driver experiment model identification noncooperative game steering control strategy vehicle

Non-sea-salt sulfate in the marine boundary layer and its possible impact on chloride depletion

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Acta Oceanologica Sinica 2005年第6期24卷 162-171页

作者： cole-Dai Jihong Department of Chemistry and Biochemistry Box 2202 Shepard Hall South Dakota State University Brookings SD 57007 USA

Aerosol samples were collected on board the research vessel Xuelong duringthe Fifteenth Chinese Antarctic Research Expedition (CHINARE XV) in November 1998—April 1999 andthe First Chinese Arctic Research Expedition in July—September *** areas traversed by theexpeditionary cruises include the Arctic Ocean, the western North Pacific Ocean and the easternIndian Ocean, covering 75°N—69°S and 75°E—133°W. Aerosol samples were also taken at theChinese Zhongshan Station in East Antarctica during the CHINARE XV. Analysis of the samples yieldedconcentrations of non-sea-salt sulfate and other soluble chemical species in the marine boundarylayer. The data suggest that the chemical composition of the marine aerosols is influenced by threemajor sources: continental air masses, primary oceanic emissions, and secondary marine aerosolsoriginated from oceanic *** results show that, awing to strong anthropogenic sulfuremissions from the Asian continent, non-sea-salt sulfate concentrations in the Northern Hemisphere(the western North Pacific) marine aerosol are significantly higher than those in the SouthernHemisphere (the eastern Indian Ocean). Aerosol non-sea-salt sulfate concentrations appear to beinversely correlated with aerosol non-sea-salt chloride which shows significantly negative values,indicating the loss of chloride by sea salts, in most aerosol samples. Since gaseous HCl may beinvolved in chemical reactions that deplete atmospheric ozone in the marine boundary layer (MBL),high levels of acidic non-sea-salt-sulfate released by human activities in the low and mid-latitudesof the Northern Hemisphere may become an important potential contributor to the loss of atmosphericozone in the MBL.

关键词： non-sea-salt sulfate marine boundary layer chloride depletion

A PLS blockchain for IoT applications:protocols and architecture

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Cybersecurity 2018年第1期1卷 993-1009页

作者： alex Shafarenko Department of Computer Science University of HertfordshireHatfield AL109ABUK

This paper proposes an architecture and a protocol suite for a permissioned blockchain for a local IoT *** architecture is based on a sealed Sequencer and a Fog Server running(post-quantum)Guy Fawkes *** blocks of the blockchain are stored in networked Content Addressable Storage alongside any user data and validity *** maintain that a typical IoT device can,despite its resource limitations,use our blockchain protocols directly,without a trusted *** includes posting and monitoring transactions as well as off-chain(post-quantum)emergency communications without an explicit public key.

关键词： Blockchain Guy Fawkes protocol Post-quantum HORS-OTS LoRa Concurrent transmission

Indexing structures for the PLS blockchain

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Cybersecurity 2021年第1期4卷 561-579页

作者： alex Shafarenko University of Hertfordshire AL109AB HertfordshireUK

This paper studies known indexing structures from a new point of view:minimisation of data exchange between an IoT device acting as a blockchain client and the blockchain server running a protocol suite that includes two Guy Fawkes protocols,PLS and *** PLS blockchain is not a cryptocurrency instrument;it is an immutable ledger offering guaranteed non-repudiation to low-power clients without use of public key *** novelty of the situation is in the fact that every PLS client has to obtain a proof of absence in all blocks of the chain to which its counterparty does not contribute,and we show that it is possible without traversing the block’s Merkle *** obtain weight statistics of a leaf path on a sparse Merkle tree theoretically,as our ground *** the theory we quantify the communication cost of a client interacting with the *** show that large savings can be achieved by providing a bitmap index of the tree compressed using Tunstall’s *** further show that even in the case of correlated access,as in two IoT devices posting messages for each other in consecutive blocks,it is possible to prevent compression degradation by re-randomising the IDs using a pseudorandom bijective *** propose a low-cost function of this kind and evaluate its quality by simulation,using the avalanche criterion.

关键词： PLS blockchain Guy Fawkes protocol Content-addressable storage Data-structure statistics Tunstall coding Pseudorandom bijections

A proposed U.S./China theoretical/experimental collaborative effort on baryon resonance extraction

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Chinese Physics C 2009年第12期33卷 1222-1229页

作者： Philip L. cole Idaho State University Department of Physics Pocatello Idaho 83209-8106 USA

In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalists and theorists into a dedicated group focused on better understanding the current and future data from JLab and from the Beijing Electron Positron Collider （BEPC）. Recent JLab results on the extraction of single- and double-polarization observables in both the lπ- and 2π-channel show their high sensitivity to small production amplitudes and therefore their importance for the extraction of resonance parameters. The Beijing Electron Spectrometer （BES） at the BEPC has collected high statistics data on J/ψ production. Its decay into baryon-antibaryon channels offers a unique and complementary way of probing nucleon resonances. The CEBAF Large Acceptance Spectrometer, CLAS, has access to N＊ form factors at high Q2 which is advantageous for the study of dynamical properties of nucleon resonances, while the low-background BES results will be able to provide guidance for the search for less-dominant excited states at JLab. Moreover, with the recently approved experimental proposal Nucleon Resonance Studies with CLAS12 and the high-quality data streaming from BES-Ⅲand CLAS, the time has come for forging a new Trans-Pacific collaboration of theorists and experimentalists on NSTAR physics.

关键词： baryon resonances electromagnetic form factors J/ψ production CEBAF Large AcceptanceSpectrometer (CLAS) Jefferson Laboratory (JLab) Beijing Electron Spectrometer (BES) Beijing ElectronPositron Collider (BEPC) Institute of High Energy Physics (IHEP)

Conics on Barth-Bauer octics

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Science China Mathematics 2024年第7期67卷 1507-1524页

作者： alex Degtyarev Department of Mathematics Bilkent UniversityAnkara06800Turkey

We analyze the configurations of conics and lines on a special class of Kummer octic surfaces. In particular, we bound the number of conics by 176 and show that there is a unique surface with 176 conics, all irreducible: it admits a faithful action of one of the Mukai groups. Therefore, we also discuss conics and lines on Mukai surfaces: we discover a double plane(ramified at a smooth sextic curve) that contains 8,910 smooth conics.

关键词： K3-surface octic surface Kummer surface conic Mukai group

Bridging academic science and clinical research in the search for novel targeted anti-cancer agents

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Cancer Biology & Medicine 2015年第4期12卷 316-327页

作者： alex Matter Experimental Therapeutics Center & D3 A*STAR

This review starts with a brief history of drug discovery & development, and the place of Asia in this worldwide effort discussed. The conditions and constraints of a successful translational R&D involving academic basic research and clinical research are discussed and the Singapore model for pursuit of open R&D described. The importance of well-characterized, validated drug targets for the search for novel targeted anti-cancer agents is emphasized, as well as a structured, high quality translational R&D. Furthermore, the characteristics of an attractive preclinical development drug candidate are discussed laying the foundation of a successful preclinical development. The most frequent sources of failures are described and risk management at every stage is highly recommended. Organizational factors are also considered to play an important role. The factors to consider before starting a new drug discovery & development project are described, and an example is given of a successful clinical project that has had its roots in local universities and was carried through preclinical development into phase I clinical trials.

关键词： Drug discovery drug development translational R&D targeted anti-cancer agents

Data Warehouse Design for Big Data in Academia

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Computers, Materials & Continua 2022年第4期71卷 979-992页

作者： alex Rudniy Department of Computing Sciences University of ScrantonScranton18510PAUSA

This paper describes the process of design and construction of a data warehouse(“DW”)for an online learning platform using three prominent technologies,Microsoft SQL Server,MongoDB and Apache *** three systems are evaluated for corpus construction and descriptive *** case also demonstrates the value of evidence-centered design principles for data warehouse design that is sustainable enough to adapt to the demands of handling big data in a variety of ***,the paper addresses maintainability-performance tradeoff,storage considerations and accessibility of big data *** this NSF-sponsored work,the data were processed,transformed,and stored in the three versions of a data warehouse in search for a better performing and more suitable *** data warehouse engines-a relational database,a No-SQL database,and a big data technology for parallel computations-were subjected to principled ***,construction and evaluation of a data warehouse were scrutinized to find improved ways of storing,organizing and extracting *** work also examines building corpora,performing ad-hoc extractions,and ensuring *** was found that Apache Hive demonstrated the best processing time followed by SQL Server and *** the aspect of analytical queries,the SQL Server was a top performer followed by MongoDB and *** paper also discusses a novel process for render students anonymity complying with Family Educational Rights and Privacy Act *** phases for DW design are recommended:1)Establishing goals at the outset based on Evidence-Centered Design principles;2)Recognizing the unique demands of student data and use;3)Adopting a model that integrates cost with technical considerations;4)Designing a comparative database and 5)Planning for a DW design that is *** for future research include attempting DW design in contexts involving larger data sets,more refined operations,and ensu

关键词： Big data data warehouse MongoDB Apache hive SQL server

Modelling of a Human Driver’s Interaction with Vehicle Automated Steering Using Cooperative Game Theory

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IEEE/CAA Journal of Automatica Sinica 2019年第5期6卷 1095-1107页

作者： Xiaoxiang Na David J.cole Department of Engineering University of Cambridge

The introduction of automated driving systems raised questions about how the human driver interacts with the automated system. Non-cooperative game theory is increasingly used for modelling and understanding such interaction, while its counterpart, cooperative game theory is rarely discussed for similar applications despite it may be potentially more suitable. This paper describes the modelling of a human driver’s steering interaction with an automated steering system using cooperative game theory. The distributed Model Predictive Control approach is adopted to derive the driver’s and the automated steering system’s strategies in a Pareto equilibrium sense, namely their cooperative Pareto steering strategies. Two separate numerical studies are carried out to study the influence of strategy parameters, and the influence of strategy types on the driver’s and the automated system’s steering performance. It is found that when a driver interacts with an automated steering system using a cooperative Pareto steering strategy, the driver can improve his/her performance in following a target path through increasing his/her effort in pursuing his/her own interest under the driver-automation cooperative control goal. It is also found that a driver’s adoption of cooperative Pareto steering strategy leads to a reinforcement in the driver’s steering angle control, compared to the driver’s adoption of non-cooperative Nash strategy. This in turn enables the vehicle to return from a lane-change maneuver to straight-line driving swifter.

关键词： Automated driving system cooperative game theory driver modelling