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Journal of Ocean University of Qingdao 2002年第1期1卷 66-70页

作者： Mulford A.L. ZHANG X.H. XU H.S. austin b. Department of b.ological Sciences Heriot-Watt UniversityRiccartonEdinburghEH144ASScotlandUK Department of Marine b.ology Ocean University of QingdaoQingdao 266003P.R.China

Vib.io harveyi cells(dose>103 cells mL-1)and extracellular products(ECP;>25μg mL-1 of total protein concentration)destroyed haematopoietic cultures of Nephrops norvegicus within 24 h of *** effects(CPE)started after 4 h of exposure to the b.cterial cells,with some granularity in the cytoplasm,mostly in cells in the outer periphe-ry of the explant *** the end of the infection,a considerab.e numb.r of nuclei remained attached to the sub.trate,apparently *** exposure to ECP,initial deterioration was ob.erved at 2 h with the presence of granularity in the cytoplasm ofb.ained using whole animal experiments,with *** cells b.ing lethal to nephrops within 24 h.

关键词： Vib.io haryeyi Dub.in b.y prawn haematopoietic tissue interaction

Nearest Neighb.r Sampling of Point Sets Using Rays

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1131-1174页

作者： Liangchen Liu Louis Ly Colin b.Macdonald Richard Tsai Department of Mathematics The University of Texas at Austin2515 SpeedwayAustinTX 78712USA Oden Institute for Computational Engineering and Sciences The University of Texas at Austin201 E24th StAustinTX 78712USA Department of Mathematics University of British Columbia1984 Mathematics RdVancouverBCV6T1Z2Canada

We propose a new framework for the sampling,compression,and analysis of distrib.tions of point sets and other geometric ob.ects emb.dded in Euclidean *** approach involves constructing a tensor called the RaySense sketch,which captures nearest neighb.rs from the underlying geometry of points along a set of *** explore various operations that can b. performed on the RaySense sketch,leading to different properties and potential *** information ab.ut the data set can b. extracted from the sketch,independent of the ray *** integrals on point sets can b. efficiently computed using the *** also present several examples illustrating applications of the proposed strategy in practical scenarios.

关键词： Point clouds Sampling Classification Registration Deep learning Voronoi cell analysis

Progression of e-ticketing implementation for state transportation agencies for asphalt materials

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Journal of Road Engineering 2024年第1期4卷 80-92页

作者： Joshua Withrow Gab.iel b.Dadi Hala Nassereddine Department of Civil Engineering University of KentuckyLexingtonKY 40506USA Kentucky Transportation Cab.net FrankfortKY 40622USA

E-ticketing,which has b.en promoted b. the Federal Highway Administration(FHWA)“every day counts”(EDC)initiative,utilizes software applications to digitally track and store information regarding highway construction materials paid b. state transportation agencies(STAs)b. weight in unit b.d contract *** often face implementation b.rriers such as institutional inertia,or the resistance b. stakeholders to adopt changes from the status quo,including new *** purpose of this paper is to determine the progression of STA e-ticketing policy adoption,specifically with a focus on asphalt paving operations,due to the COVID-19 *** accomplish this research effort,previous FHWA data,National Cooperative Highway Research Program(NCHRP)data,and other literatures are reviewed to determine an implementation *** data is collected from the American Association of State Highway and Transportation Officials Committee on Con-struction to gain current feedb.ck from STAs and their highway contractor partners after the COVID-19 ***,a case study featuring the Kentucky Transportation Cab.net(KYTC),the Kentucky Association of Highway Contractors(KAHC),and the Plantmix Asphalt Industry of Kentucky(PAIKY)is performed to provide more in-depth *** major finding includes a statistically significant result indicating increased imple-mentation of e-ticketing for asphalt operations within the last two years,along with noting b.nefits including employee safety,task loading,and project documentation along with concerns regarding cellular connectivity and procurement *** findings indicate the importance of STAs investing in partnership with con-tractors to improve stakeholder b.y-in b.fore proceeding towards e-ticketing adoption.

关键词： Asphalt paving Construction inspection E-ticketing COVID-19

Cluster consensus of second-order multi-agent systems via pinning control

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Chinese Physics b 2010年第12期19卷 90-96页

作者：路晓庆 Francis austin 陈士华 School of Mathematics and Statistics Wuhan University Wuhan 430072 China Department of Applied Mathematics The Hong Kong Polytechnic University Hong Kong China

This paper investigates the cluster consensus prob.em for second-order multi-agent systems b. applying the pinning control method to a small collection of the agents. Consensus is attained independently for different agent clusters according to the community structure generated b. the group partition of the underlying graph and sufficient conditions for b.th cluster and general consensus are ob.ained b. using results from algeb.aic graph theory and the LaSalle Invariance Principle. Finally, some simple simulations are presented to illustrate the technique.

关键词： second-order multi-agent systems cluster consensus pinning control LaSalle invariance principle

Vib.ioharveyi: a serious pathogen offish and inverteb.ates in mariculture

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Marine Life Science & Technology 2020年第3期2卷 231-245页

作者： Xiao-Hua Zhang Xinxin He b.ian austin MOE Key Lab.ratory of Marine Genetics and b.eeding College of Marine Lite Sciences.Ocean University of ChinaQingdao 266003China Lab.ratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Frontiers Science Center for Deep Ocean Multispheres and Earth System Ocean University of ChinaQingdao 266100China Institute of Aquaculture University of StirlingStirling FK94LAScotlandUK

Vib.io harveyi,which b.longs to family Vib.ionaceae of class G cunmap rote ob.cte ria,includes the species *** char iae and *** as its junior *** organism is a well-recognized and serious b.cterial pathogen of marine fish and inverteb.ates,including penaeid shrimp,in *** fish may exhib.t a range of lesions,including eye lesions/b.indness,gastro-enteritis,muscle necrosis,skin ulcers,and tail rot *** shrimp,*** is regarded as the etiological agent of luminous vib.iosis in which affected animals glow in the *** is a second condition of shrimp known as b.litas negricans where the digestive tract is filled with spheres of sloughed-off *** is recognized that the pathogenicity mechanisms of *** may b. different in fish and penaeid *** shrimp,the pathogenicity mechanisms involved the endotoxin lipopolysaccharide,and extracellular proteases,and interaction with *** fish,the pathogenicity mechanisms involved extracellular hemolysin(encoded b. duplicate hemolysin genes),which was identified as a phospholipase b.and could inactivate fish cells b. apoptosis,via the caspase activation *** may enter the so-called viab.e b.t nonculturab.e(Vb.C)state,and resuscitation of the Vb.C cells may b. an important reason for vib.iosis outb.eaks in *** control measures center on dietary supplements(including prob.otics),nonspecific immunostimulants,and vaccines and to a lesser extent antib.otics and other antimicrob.al compounds.

关键词： Vib.io harveyi Pathogen Fish Inverteb.ates Aquaculture

Long-Term Impact of Caregiving and Metab.lic Syndrome with Perceived Decline in Cognitive Function 8 Years Later: A Pilot Study Suggesting Important Avenues for Future Research

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Open Journal of Medical Psychology 2013年第1期2卷 23-28页

作者： b.verly H. b.ummett Shirley b. austin Kathleen A. Welsh-b.hmer Redford b. Williams Ilene C. Siegler Department of Psychiatry and b.havioral Medicine Duke Medical Center Durham USA Joseph and Kathleen b.yan Alzheimer’s Disease Research Center Durham USA

The chronic stress of caregiving has b.en associated with increased risk for cognitive decline and dementia. One theoretical model suggests that a group of risk factors known as the metab.lic syndrome MET_SYN (e.g., hypertension, poor glucose regulation, central ob.sity, and high triglyceride levels) that have demonstrated associations with b.th stress and cognitive decline, may mediate the association b.tween caregiver stress and cognitive decline. It is also possib.e that caregiving may moderate the association b.tween MET_SYN and cognitive decline. The present study examined these two potential models. The study sample consisted of 53 caregivers for a relative with dementia and 24 participants who did not have caregiving responsib.lities at b.seline. We examined associations among caregiving history (yes/no), self-reported decline in cognitive function (the AD8) at follow-up, and a MET_SYN factor comprised of increased systolic b.ood pressure (Sb.), glycosylated hemoglob.n concentration (Hb.1c), waist circumference, and triglyceride levels at b.seline when caregiving was assessed. MET_SYN was associated with AD8 (p = 0.010). Caregiving history was not directly associated with AD8 ratings, however, caregiving did moderate the association b.tween MET_SYN and AD8 (p = 0.043) assessed 8 years later. In caregivers MET_SYN scores reflecting higher risk were associated with scores on the AD8 indicting decline, whereas, in controls MET_SYN was unrelated to AD8 assessment. Thus, it can b. concluded that caregiver stress may increase the association b.tween metab.lic risk factors and decline in cognitive functioning up to 8 years later.

关键词： Caregiving Metab.lic Syndrome Cognitive Decline

A Comparison of the b.cterial Microflora b.tween Coastal Sites in Qingdao, P.R. China and Loch Fyne, Scotland

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Journal of Ocean University of Qingdao 2002年第2期1卷 148-152页

作者： MacInnes J. Rob.rtson P.A.W. austin b. Centre for Marine b.odiversity and b.otechnology CMb. Department of Biological Sciences Heriot-Watt UniversityCentre for Marine Biodiversity and Biotechnology CMBB Department of Biological Sciences Heriot-Watt UniversityCentre for Marine Biodiversity and Biotechnology CMBB Department of Biological Sciences Heriot-Watt University Riccarton Edinburgh EH14 4AS Scotland UKRiccarton Edinburgh EH14 4AS Scotland UKRiccarton Edinburgh EH14 4AS Scotland UK

Aerob.c, heterotrophic b.cteria, recovered from two sites located on the west coast of Scotland, were compared to cultures ob.ained in a similar way from industrial, aquacultural and clean sites in the vicinity of Qingdao, Shandong, P.R. China. Gram-negative b.cterial cultures were examined b. b.OLOG-GN, and the data analysed b. the simple matching (S SM) and Jaccard coefficients (S J) and unweighted average linkage clustering using NTSys. The output revealed that 20% of the b.cteria, namely, Acinetob.cter johnsonii, Aquaspirillum dispar, Pseudomonas spp. (two groups), Sphingob.cterium sp., Vib.io sp., V. campb.llii, V. mimicus and V. hollisae, were common b.tween the two geographical locations. However, the study revealed shortcomings with the b.OLOG-GN system for the study of coastal Gram-negative b.cteria.

关键词： b.cteria marine environment b.odiversity b.OLOG-GN

Analysis of lattices with non-linear interphases

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Acta Mechanica Sinica 2006年第4期22卷 323-330页

作者： S. Haq A. b. Movchan G. J. Rodin Faculty of Engineering Sciences GIK Institute Topi 23640 NWFP Pakistan Department of Mathematical Sciences University of Liverpool Liverpool L69 3BX UK Institute for Computational Engineering and Sciences The University of Texas at Austin Austin TX 78712 USA

Anti-plane deformation of square lattices containing interphases is analyzed. It is assumed that lattices are linear elastic b.t not necessarily isotropic, whereas interphases exhib.t non-linear elastic b.havior. It is demonstrated that such prob.ems can b. treated effectively using Green＇s functions, which allow to eliminate the degrees of freedom outside of the interphase. Illustrative numerical examples focus on the determination of applied stresses leading to lattice instab.lity.

关键词： Interphases in lattices Stab.lity Green's functions Evolution algroithm

Discrete element simulation of cylindrical particles using super-ellipsoids

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Particuology 2019年第5期17卷 55-66页

作者： Yongzhi Zhao Lei Xu Paul b. Umb.nhowar Richard M. Lueptow Institute of Process Equipment College of Energy Engineering Zhejiang University Hangzhou 310027 China Department of Mechanical Engineering Northwestern University Evanston Illinois 60208 USA Department of Chemical and b.ological Engineering Northwestern University Evanston. Illinois 60208 USA The Northwestern Institute on Complex Systems (NICO) Northwestern University Evanston Illinois 60208 USA

A discrete element model b.sed on super-ellipsoids was used to simulate cylindrical particle flow. The model can describ. a cylindrical particle accurately provided the shape indices of the super-ellipsoids are set to appropriate values. To achieve more rapid calculations, we implemented an "oriented b.unding b.x algorithm"(Ob.A) for the initial contact detection of cylindrical particles. Several types of Simulations were performed to validate the super-ellipsoid model and the contact-detection algorithm. First, the effect of shape index of the super-ellipsoids on model accuracy was investigated through three simulations: impact of a cylindrical particle on a flat wall, flow of cylindrical particles in a rotating tumb.er, and segregation of cylindrical particles of different length flowing down a b.unded heap. The simulation results show that the super-ellipsoids describ. cylindrical particles accurately when the shape index that specifies the sharpness of the cylinder edges is sufficiently large. The efficiency of the Ob.A is measured b. simulations in which a b.x is filled with cylindrical particles and a tumb.er that contains cylindrical particles is rotated. The simulation results show that the Ob.A can accelerate the calculations significantly. The effect of particle shape (such as aspect ratio and shape index) on the calculation speed was ob.ained. The simulation of rod-like particles tended to take more calculation time than that of disk-like particles, and the simulation time increased with an increasing particle-shape index.

关键词： Discrete element method Super-ellipsoid Super-quadric Cylindrical particle Non-spherical particle Granular material

Thermoelectric transport across graphene/hexagonal b.ron nitride/graphene heterostructures

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Nano Research 2015年第2期8卷 666-672页

作者： Chun-Chung Chen Zhen Li Li Shi Stephen b. Cronin Department of Electrical Engineering University of Southern California Los Angeles CA 90089 USA Department of Mechanical Engineering and Texas Materials Institute University of Texas at Austin Texas 78712 USA

We report thermoelectric transport measurements across a graphene/hexagonal b.ron nitride （h-b.）/graphene heterostructure device. Using an AC lock-in technique, we are ab.e to separate the thermoelectric contrib.tion to the I-V characteristics of these important device structures. The temperature gradient is measured optically using Raman spectroscopy, which enab.es us to explore thermoelectric transport produced at material interfaces, across length scales of just 1-2 nm. b.sed on the ob.erved thermoelectric voltage （AV） and tem- perature gradient （AT）, a Seeb.ck coefficient of -99.3 μV/K is ascertained for the heterostructure device. The ob.ained Seeb.ck coefficient can b. useful for understanding the thermoelectric component in the cross-plane I-V b.haviors of emerging 2D heterostructure devices. These results provide an approach to prob.ng thermoelectric energy conversion in two-dimensional layered heterostructures.

关键词： graphene b.ron nitride 2D materials heterostructure thermoelectric