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Problems on Graph. with.Fixed Smallest Eigenvalue

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Algebra Colloquium 2020年第1期27卷 51-54页

作者： jack koolen Qianqian Yang Wen-Tsun Wu Key Laboratory of CAS School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026China Sch.ol of Math.matical Sciences University of Science and Technology of China Hefei 230026China

In th.s note we give several problems and conjectures on graph. with.fixed smallest eigenvalue.

关键词： 5-integrability lattice graph

Utilizing Statistical Semantic Similarity Tech.iques for Ontology Mapping——with.Applications to AEC Standard Models

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Tsingh.a Science and Tech.ology 2008年第S1期13卷 217-222页

作者： Ch.n-Pang jack Ch.ng Gloria T. Lau Kinch. h. Law Engineering Informatics Group Stanford University

Th. objective of th.s paper is to introduce th.ee semi-automated approach.s for ontology mapping using relatedness analysis tech.iques. In th. arch.tecture, engineering, and construction (AEC) industry, th.re exist a number of ontological standards to describe th. semantics of building models. Alth.ugh.th. standards sh.re similar scopes of interest, th. task of comparing and mapping concepts among standards is ch.llenging due to th.ir differences in terminologies and perspectives. Ontology mapping is th.refore necessary to ach.eve information interoperability, wh.ch.allows two or more information sources to exch.nge data and to re-use th. data for furth.r purposes. Th. attribute-based approach. corpus-based approach. and name-based approach.presented in th.s paper adopt th. statistical relatedness analysis tech.iques to discover related concepts from h.terogeneous ontologies. A pilot study is conducted on IFC and CIS/2 ontologies to evaluate th. approach.s. Preliminary results sh.w th.t th. attribute-based approach.outperforms th. oth.r two approach.s in terms of precision and F-measure.

关键词： ontology mapping similarity analysis information interoperation statistical analysis tech.iques

Low rank approximation in G0W0 calculations

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Science Ch.na Math.matics 2016年第8期59卷 1593-1612页

作者： Sh.O MeiYue LIN Lin YANG Ch.o LIU Fang DA JORNADA Felipe h. DESLIPPE jack LOUIE Steven G. Computational Research.Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Math.matics University of California at BerkeleyBerkeleyCA 94720USA Sch.ol of Statistics and Math.matics Central University of Finance and EconomicsBeijing 100081China Department of Ph.sics University of California at BerkeleyBerkeleyCA 94720USA Materials Science Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA NERSC.Lawrence Berkeley National Laboratory Berkeley.CA 94720.USA

Th. single particle energies obtained in a Koh.-Sh.m density functional th.ory(DFT) calculation are generally known to be poor approximations to electron excitation energies th.t are measured in transport,tunneling and spectroscopic experiments such.as ph.to-emission spectroscopy. Th. correction to th.se energies can be obtained from th. poles of a single particle Green's function derived from a many-body perturbation th.ory. From a computational perspective, th. accuracy and efficiency of such.an approach.depends on h.w a self energy term th.t properly accounts for dynamic screening of electrons is approximated. Th. G_0W_0 approximation is a widely used tech.ique in wh.ch.th. self energy is expressed as th. convolution of a noninteracting Green's function(G_0) and a screened Coulomb interaction(W_0) in th. frequency domain. Th. computational cost associated with.such.a convolution is h.gh.due to th. h.gh.complexity of evaluating W_0 at multiple frequencies. In th.s paper, we discuss h.w th. cost of G_0W_0 calculation can be reduced by constructing a low rank approximation to th. frequency dependent part of W_0. In particular, we examine th. effect of such.a low rank approximation on th. accuracy of th. G_0W_0 approximation. We also discuss h.w th. numerical convolution of G_0 and W_0 can be evaluated efficiently and accurately by using a contour deformation tech.ique with.an appropriate ch.ice of th. contour.

关键词： density functional th.ory GoW0 approximation Sternh.imer equation contour deformation lowrank approximation

Oxytocin structure and function in New World monkeys:from ph.rmacology to beh.vior

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Integrative Zoology 2018年第6期13卷 634-654页

作者： Aaryn MUSTOE jack h.TAYLOR Jeffrey A.FRENCh Program in Neuroscience and Beh.vior University of Nebraska at OmahaOmahaNebraskaUSA

Oxytocin(OT)is a h.poth.lamic nonapeptide th.t mediates a h.st of ph.siological and beh.vioral processes in-cluding reproductive ph.siology and social *** th. OT sequence structure is h.gh.y conserved among mammals,New World monkeys(NWMs)represent an unusual“h.t spot”in OT structure variability among *** least 6 distinct OT ligand variants among NWMs exist,yet it is currently unclear wh.th.r th.se evolved structural ch.nges result in meaningful functional *** offer a new area to explore h.w th.se modifications to OT and its canonical G-protein coupled OT receptor(OTR)may mediate specific cellular,ph.siological and beh.vioral *** th.s review,we h.gh.igh. relationsh.ps between OT ligand and OTR structural variability,specifically examining coevolution between OT ligands,OTRs,and ph.siological and beh.vioral ph.notypes across *** consider wh.th.r th.se evolved modifications to th. OT structure alter ph.rmacological profiles at h.man and marmoset OTRs,including ch.nges to receptor binding,intracellular signaling and receptor ***,we evaluate wh.th.r exogenous manipulation using OT variants in marmoset monkeys differentially enh.nce or impair beh.vioral processes involved in social relationsh.ps between pairmates,opposite-sex strangers,and parents and th.ir ***,it appears th.t ch.nges to OT ligands in NWMs result in important ch.nges ranging from cellular signaling to broad measures of social beh.vior.

关键词： cell signaling marmoset oxytocin receptor ph.rmacology social beh.vior

Blueprint 2050: Sustaining Th. Marine Environment In Mainland Tanzania And Zanzibar

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Metal-insulator-semiconductor(MIS) ph.toelectrodes: distance improves performance

2005年

作者： jack h. Ruitenbeek Indumath.e h.wawasam Magnus A. K. Ngoile h. jack Ruitenbeek

ISBN: (纸本)9781417582655

Protection and sound management of coastal and marine areas are acknowledged as important mech.nisms for alleviating poverty in th. developing tropics. Tanzania h.s h.d considerable practical experience with.a diversity of models th.t rely on private sector partnersh.ps, community co-management regimes, and government-led initiatives for marine protection. 'Blueprint 2050' outlines a vision of wh.t a protected area system could look like in 50 years. It draws on state-of-th.-art ecosystem, socioeconomic, financial, and institutional background studies to paint a picture th.t emph.sizes community-based adaptive co-management with.n a flexible system of eigh. protected area networks, one of wh.ch.is th. Exclusive Economic Zone. 'Blueprint 2050 is an impressive piece of professional work wh.ch.addresses th. pligh. of th. many communities wh.se livelih.ods depend on Tanzania's marine resources. Environmental conservation, sustainability, efficiency, good governance, and a pro-poor policy stance come out as key issues in pursuit of Tanzania's millennium development goals by th.se communities.' -- h.n Raph.el OS Mollel, Senior Permanent Secretary Vice President's Office, United Republic of Tanzania 'It is my sincere h.pe th.t Blueprint 2050 will serve th. intended purpose of promoting th. devlopment of marine protected areas based on our current policies and legislation.' -- h.n Madam Rah.a M Msh.ngama, Principal Secretary Ministry of Agriculture Natural Resources, Environment and Co-operatives (MANREC), Zanzibar

关键词： Environmental policy

来源：畅想之星图书光盘版（南... 评论

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National Science Review 2021年第8期8卷 7-8页

作者： Josh.a jack Zh.yong Jason Ren Department of Civil and Environmental Engineering and th. Andlinger Center for Energy and th. Environment Princeton University

h.drogen（h.） is a clean energy carrier with.enormous potential to support deep decarbonization towards net-zero and a circular carbon economy. h.wever, h.production itself can be carbon and energy intensive, as 96% of global h.synth.sis is currently conducted via th.rmoch.mical processes such.as steam reforming and coal gasification th.t rely on fossil fuels [1].

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A Web Service Framework for Environmental and Carbon Footprint Monitoring in Construction Supply Ch.ins

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Journal of Civil Engineering and Arch.tecture 2011年第1期5卷 1-12页

作者： jack C. P. Ch.ng Kinch. h. Law Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology Hong Kong China Department of Civil and Environmental Engineering Stanford University Stanford California USA

With.th. growing environmental concerns, green supply ch.in management （GSCM） is gaining significant attention in th. construction industry. Tracking and monitoring th. environmental effects brough. forth.by th. participating members along a supply ch.in is important to GSCM. Th. GreenSCOR model developed by th. Supply Ch.in Council provides a generic framework for measuring th. total carbon footprint and environmental footprint in a supply ch.in. Th. model is based on th. Supply Ch.in Operations Reference （SCOR） model, wh.ch.represents a supply ch.in network in a h.erarch.cally structured manner. Th.s paper describes th. GreenSCOR framework and its potential application to th. construction industry. Th.s paper also presents a web services approach.to incorporate th. GreenSCOR model to th. implementation of collaborative information systems. Each.process element in th. SCOR model is represented and delivered as individual web service units, wh.ch.can be reused and integrated using standard web services tech.ologies. Th. service units are combined and managed in a prototype web service collaborative framework, called SC Collaborator, wh.ch.is designed and developed for supporting construction supply ch.in management. An illustrative example is presented to demonstrate th. implementation of th. GreenSCOR-based SC Collaborator framework.

关键词： Green supply ch.in management (GSCM) Supply Ch.in Operations Reference (SCOR) model performance monitoring service oriented web services.

Th. Fligh. Dynamics of Tapejara,a Pterosaur From th. Early Cretaceous of Brazil with.a Large Cranial Crest

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Acta Geologica Sinica(English.Edition) 2012年第6期86卷 1377-1388页

作者： Sankar Ch.TTERJEE R.jack TEMPLIN Department of Geosciences Museum of Texas Tech University Aerodynamic Laboratory National Research Council

Tapejara wellnh.feri, a small azh.arch.id pterodactyloid from th. Early Cretaceous Santana Formation of Brazil, provides critical information about th. aerodynamic function of its spectacular h.ad crest. Th. cranial crests in pterodactyloids were sexually dimorph.c and are th.ugh. to h.ve evolved in adult males in response to female mate ch.ice. h.wever, th. location of cranial crests in front of th. center of gravity would create instability in th. yaw axis during fligh. and may seem like a h.ndicap. Vertically aligned webbed feet probably suppressed th. yawing rotations and instability from th. crest. h.re we sh.w th.t th. crest functioned as a front rudder to make agile turn and mediate fligh. control. A computer simulation model suggests th.t Tapejara h.d a large excess of muscle power available above th. power required for continuous flapping fligh.. It could easily takeoff from a perch. ground, or water surface and land safely on th. ground. It was an excellent glider with.a gliding angle close to 4~ and a cruising speed of 27 km/h. Tapejara could soar efficiently on th. windward side of cliffs or circle on rising th.rmals over tropical waters for efficient long-distance fligh.. Various control surfaces in th. wings of Tapejara analogous to th. slat, aileron, elevator, fin, rudder, and h.rizontal stabilizer of an aircraft made pterodactyloids versatile flyers.

关键词： Tapejara Cretaceous pterodactyloids cranial crest fligh. Brazil

Transplacental induction of fatty acid oxidation in term fetal pigs by th. peroxisome proliferator-activated receptor alph. agonist clofibrate

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Journal of Animal Science and Biotech.ology 2016年第3期7卷 341-352页

作者： Xi Lin Sh.ila Jacobi jack Odle Laboratory of Developmental Nutrition Department of Animal SciencesNorth Carolina State University

Background： To induce peroxisomal proliferator-activated receptor α（PPARα） expression and increase milk fat utilization in pigs at birth. th. effect of maternal feeding of th. PPARα agonist, clofibrate（2-（4-ch.oroph.noxy）-2-meth.l-propanoic acid, eth.l ester）, on fatty acid oxidation was examined at ful-term delivery（0 h. and 24 h.after delivery in th.s *** group of pigs（n = 10） was delivered from pregnant sows fed a commercial diet with.or with.ut 0.8% clofibrate for th. last 7 d of gestation. Blood samples were col ected from th. utero-ovarian artery of th. sows and th. umbilical cords of th. pigs as th.y were removed from th. sows by C-section on day 113 of ***： h.LC analysis identified th.t clofibric acid was present in th. plasma of th. clofibrate-fed sow（~4.2 μg/m L）and its offspring（~1.5 μg/m L）. Furth.rmore, th. maternal-fed clofibrate h.d no impact on th. liver weigh. of th. pigs at 0 h.and 24 h. but h.patic fatty acid oxidation examined in fresh.h.mogenates sh.wed th.t clofibrate increased（P 〈 0.01）^14C-accumulation in CO2 and acid soluble products 2.9-fold from [1-^14C]-oleic acid and 1.6-fold from[1-^14C]-lignoceric acid respectively. Correspondingly, clofibrate increased fetal h.patic carnitine palmitoyltransferase（CPT）and acyl-Co A oxidase（ACO） activities by 36% and 42% over controls（P 〈 0.036）. Th. m RNA abundance of CPT I was 20-fold h.gh.r in pigs exposed to clofibrate（P 〈 0.0001） but no differences were detected for ACO and PPARα m RNA between th. two ***： Th.se data demonstrate th.t dietary clofibrate is absorbed by th. sow, crosses th. placental membrane, and enters fetal circulation to induce h.patic fatty acid oxidation by increasing th. CPT and ACO activities of th. newborn.

关键词： Clofibrate Fatty acid oxidation Pigs Placenta transfer