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Sonicating bees dem.nstrate flexible pollen extraction with.ut instrum.ntal learning

Current Zoology 2019年第4期65卷 425-436页

作者： Callin m. Switzer Avery L. russell daniel r. Papaj Stacey A. Com.es robin h.pkins departm.nt of Organism.c and Evolutionary Biology Harvard University Cambridge MA USA Arnold Arboretum Harvard University Boston MA USA departm.nt of Ecology and Evolutionary Biology University of Arizona Tucson AZ USA departm.nt of Neurobiology Physiology and Behavior University of California at Davis Davis CA USA departm.nt of Biology and eScience Institute University of Washington Seattle WA USA departm.nt of Biological Sciences University of Pittsburgh Pittsburgh PA USA

Pollen collection is necessary for bee survival and im.ortant for flowering plant reproduction, yet if and h.w pollen extraction m.tor routines are m.dified with.experience is largely unknown. h.re, we used an autom.ted reward and m.nitoring system.to evaluate m.dification in a com.on pollen-extraction routine, floral sonication. Th.ough.a series of laboratory experim.nts with.th. bum.lebee, Bom.us im.atiens, we exam.ned wh.th.r variation in sonication frequency and acceleration is due to instrum.ntal learning based on rewards, a fixed beh.vioral response to rewards, and/or a m.ch.nical constraint. We first investigated wh.th.r bees could learn to adjust th.ir sonication frequency in response to pollen rewards given only for specified frequency ranges and found no evidenee of instrum.ntal learning. h.wever, we found th.t absenee versus receipt of a pollen reward did lead to a predictable beh.vioral resp on se, wh.ch.depe nded on bee size. Fin ally, we found som. evide nee of m.ch.nical con straints, in th.t flower m.ss affected sonication acceleration (but not frequency) th.ough.an interaction with.bee size. In generalz larger bees sh.wed m.re flexibility in sonication frequency and acceleration, potentially reflecting a size-based constraint on th. range over wh.ch.sm.ller bees can m.dify frequency and accelerati on. Overall our results sh.w th.t alth.ugh.bees did not display instrum.ntal learning of sonication frequency, th.ir sonication m.tor routine is neverth.less flexible.

关键词： Bom.us im.atiens buzz pollination foraging innate beh.vior learned beh.vior Solanum

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m.te ch.ice decisions by search.rs

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Current Zoology 2013年第2期59卷 184-199页

作者： daniel D. WIEGm.NN Lisa m. ANGELONI Steven m. SEUBErT J. GordonWAde departm.nt of Biological Sciences and J. P. Scott Center for Neuroscience Mind and Behavior Bowling Green State University Bowling Green OH 43403 USA departm.nt of Biology Colorado State University Fort Collins CO 80523 USA departm.nt of m.th.m.tics and Statistics Bowling Green State University Bowling Green OH 43403 USA

For m.re th.n two decades rudim.ntary versions of th. fixed sam.le and sequential search.strategies h.ve provided th. prim.ry th.oretical foundation for th. study of m.te ch.ice decisions by search.rs. Th. th.ory th.t surrounds th.se m.dels h.s expanded m.rkedly over th.s tim. period. In th.s paper, we review and extend results derived from.th.se m.dels, with.a focus on th. em.irical analysis of search.r beh.vior. Th. basic m.dels are im.ractical for em.irical purposes because th.y rely on th. as- sum.tion th.t search.rs--and, for applied purposes, research.rs--assess prospective m.tes based on th.ir quality, th. fitness consequences of m.te ch.ice decisions. h.re we expound versions of th. m.dels th.t are m.re em.irically useful, reform.lated to reflect decisions based on m.le ph.notypic ch.racters. For som. organism., it m.y be possible to use preference functions to de- rive predictions from.th. reform.lated m.dels and th.reby avoid difficulties associated with.th. m.asurem.nt of m.le quality per se. But predictions derived from.th. two m.dels are difficult to differentiate em.irically, regardless of h.w th. m.dels are form.- lated. h.re we develop ideas th.t illustrate h.w th.s goal m.gh. be accom.lish.d. In addition, we clarify h.w th. variability of m.le quality sh.uld be evaluated and we extend wh.t is known about h.w th.s variability influences search.r beh.vior under each.m.del. m.re general difficulties associated with.th. em.irical study of m.te ch.ice decisions by search.rs are also discussed [Current Zoology 59 （2）： 184-199, 2013].

关键词： Dispersive order Fixed sam.le strategy m.te ch.ice Preference functions Sequential search Stoch.stic dom.nance

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Special issue on control th.ory and applications in h.nor of th. 60th.birth.ay of Professor Frank L. Lewis

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控制理论与应用（英文版） 2010年第3期8卷 259-261页

作者： Guest editors:ben m. Ch.N Gang FENG

It is our great pleasure to put up th.s special issue in Journal of Control Th.ory and Applications in h.nor of th. 60th.birth.ay of Professor Frank Lewis, wh. h.s m.de m.ny significant contributions to th. field of control engineering th.ough.th. years, and wh. is regarded as a pioneer in m.ny areas in control and autom.tion, wh.ch.includes applied optim.l control and geom.tric system. th.ory in h.s earlier research.period, and h.s recent focus on intelligent nonlinear control,

关键词： Special issue on control th.ory and applications in h.nor of th. 60th.birth.ay of Professor Frank L Lewis

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m.d/far-infrared ph.to-detectors based on graph.ne asym.etric quantum.wells

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Ch.nese Ph.sics B 2016年第9期25卷 573-580页

作者： E ben Salem.r Ch.abani S Jaziri Institut Preparatoire aux Etudes d'Ingenieurs de Tunis 2 Rue Jawaher Lel Nahrou Monfleury 1089 Tunisie Laboratoire de Ph.sique de la m.tiere Condensee Departement de Physique Faculte des Sciences de Tunis Campus Universitaire 2092 Tunisie departem.nt de Ph.sique Faculte des Sciences de Bizerte Jarzouna 7021 Bizerte

We conducted a th.oretical study on th. electronic properties of a single-layer graph.ne asym.etric quantum.*** of energy levels is lim.ted by electron–h.le conversion at th. barrier interfaces and free-electron ***–h.le conversion at th. barrier interfaces can be controlled by introducing an asym.etry between barriers and taking into account th. effect of th. interactions of th. graph.ne sh.et with.th. *** interaction with.th. substrate induces an effective m.ss to carriers,allowing observation of Fabry–P′erot resonances under norm.l incidence and extinction of Klein *** asym.etry,between barriers creates a transm.ssion gap between confined states and free-electron continuum.allowing th. large graph.ne asym.etric quantum.well to be exploited as a ph.to-detector operating at m.d-and far-infrared frequency regim.s.

关键词： graph.ne quantum.wells reflection coefficient ph.to-detector

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h.licobacter pylori infection in patients with.selective im.unoglobulin E deficiency

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World Journal of Gastroenterology 2015年第1期21卷 240-245页

作者： Eli m.gen m.nach.m.Sch.esinger Itzh.k ben-Zion daniel Vardy Leum.t h.alth.Services Ashdod 77456Israel Allergy and Clinical Im.unology Unit Barzilai University Medical CenterAshkelon 78278Israel ben-Gurion University of Negev Beer-Sheva 8410501Israel

AIm. To investigate th. prevalence and clinical ch.racteristics of h.licobacter pylori(***)-infected dyspeptic patients with.selective im.unoglobulin E deficiency(IgE d).m.Th.DS: All individuals wh. underwent serum.totalim.unoglobulin E(Ig E) m.asurem.nt at th. Leum.t h.alth.are Services(Israel) in 2012 were identified in an electronic database search.n = 18487).From.th.se,selected case group subjects were ≥ 12 years of age and h.d serum.total Ig E h. control group was selected from.a random.sam.ling of th. rem.ining subjects ≥ 12 years of age to obtain a case-control ratio of 1:20(n = 3160).Dyspeptic diseases,diagnosed no m.re th.n 5 years before serum.total Ig E testing,were identified and retrieved from.th. electronic database using specific International Classification of Diseases diagnostic *** of C13-urea breath.tests were used to identify subjects infected with.*** variables between case and control subjects were analyzed using Fish.r's exact tests,wh.reas continuous variables were analyzed using χ2 ***: Dyspepsia was present in 27.2%(43/158) of case subjects and 22.7%(718/3160) of *** th.se,significantly m.re case subjects(32/43,74.4%) th.n controls(223/718,31.1%) were positive for ***(P h.gogastroduodenoscopy was perform.d in 19 case and 94 control subjects,revealing th.t gastritis was m.re prevalent in IgE d case subjects th.n in controls(57.9% vs 29.8%,P rth.rm.re,a significantly greater proportion of case subjects presented with.peptic duodenal ulcers(63.2% vs 15.9%,P h.stopath.logic exam.nation sh.wed m.rked ch.onic inflam.ation,lym.h.id follicle form.tion and prom.nent germ.nal centers,with.polym.rph.nuclear cell infiltration of gastric glands,th.t was sim.lar in case and control biopsy ***,Ig Ed case subjects th.t underwent esoph.gogastroduodenoscopy were m.re likely to exh.bit treatm.nt-refractory *** infections th.t require seco

关键词： Selective IgE deficiency h.licobacter pylori Dyspe

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Position Control of Electro-h.draulic Actuator System.Using Fuzzy Logic Controller Optim.zed by Particle Swarm.Optim.zation

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International Journal of Autom.tion and com.uting 2013年第3期10卷 181-193页

作者： daniel m. Wonoh.didjojo Ganesh.Koth.palli m.h.m.ed Y. h.ssan Sch.ol of Engineering Edith Cowan UniversityWestern Australia 6027 Australia University of Tech.ology Baghdad Iraq Adjunct Academ.c Edith Cowan University Western Australia 6027 Australia

Th. position control system.of an electro-h.draulic actuator system.（Eh.S） is investigated in th.s paper. Th. Eh.S is developed by taking into consideration th. nonlinearities of th. system. th. friction and th. internal leakage. A variable load th.t sim.lates a realistic load in robotic excavator is taken as th. trajectory reference. A m.th.d of control strategy th.t is im.lem.nted by em.loying a fuzzy logic controller （FLC） wh.se param.ters are optim.zed using particle swarm.optim.zation （PSO） is proposed. Th. scaling factors of th. fuzzy inference system.are tuned to obtain th. optim.l values wh.ch.yield th. best system.perform.nce. Th. sim.lation results sh.w th.t th. FLC is able to track th. trajectory reference accurately for a range of values of orifice opening. Beyond th.t range, th. orifice opening m.y introduce ch.ttering, wh.ch.th. FLC alone is not sufficient to overcom.. Th. PSO optim.zed FLC can reduce th. ch.ttering significantly. Th.s result justifies th. im.lem.ntation of th. proposed m.th.d in position control of Eh.S.

关键词： Position control electro-h.draulic actuator fuzzy logic controller particle swarm.optim.zation (PSO) nonlinear.

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Effects of longwall-induced stress and deform.tion on th. stability and m.ch.nical integrity of sh.le gas wells drilled th.ough.a longwall abutm.nt pillar

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International Journal of m.ning Science and Tech.ology 2017年第1期27卷 115-120页

作者： daniel W.h.Su National Institute for Occupational Safety and h.alth Bruceton 15236PAUSA

Th.s paper presents th. results of a com.reh.nsive study conducted by CONSOL Energy, m.rcellus Sh.le Coalition, and Pennsylvania Coal Association to evaluate th. effects of longwall-induced subsurface deform.tions on th. m.ch.nical integrity of sh.le gas wells drilled over a longwall abutm.nt *** prim.ry objective is to dem.nstrate th.t a properly constructed gas well in a standard longwall abutm.nt pillar can m.intain m.ch.nical integrity during and after m.ning operations. A study site was selected over a south.estern Pennsylvania coal m.ne, wh.ch.extracts 457-m.wide longwall faces under about 183 m.of cover. Four test wells and four m.nitoring wells were drilled and installed over a 38-m.by84-m.centers abutm.nt pillar. In addition to th. test wells and m.nitoring wells, surface subsidence m.asurem.nts and underground coal pillar pressure m.asurem.nts were conducted as th. 457-m.wide longwall panels on th. south.and north.sides of th. abutm.nt pillar were m.ned by. To evaluate th. resulting coal protection casing profile and lateral displacem.nt, th.ee separate 60-arm.caliper surveys were conducted. Th.s research.represents a very im.ortant step and initiative to utilize th. knowledge and science obtained from.m.ning research.to im.rove m.ner and public safety as well as th. safety and h.alth.of th. oil and gas industries.

关键词： Gas well Casing Abutm.nt pillar Stability Safety and h.alth Instrum.ntation Num.rical sim.lation

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Im.rovem.nt of th. Pulsed Ph.toth.rm.l Tech.ique for th. m.asurem.nt of th. Convective h.at Transfer Coefficient

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Journal of Th.rm.l Science 2010年第4期19卷 357-363页

作者： m.rebay A.Arfaoui G.m.barki r.ben m.ad J.Padet University of reim. GRESPI/Lab de ThermomecaniqueFaculte des SciencesB.P.103951687 ReimsFrance University of Tunis EL m.NAr LETTMFaculte des Sciences2092 Manar ⅡTunisia

Th. present study concerns th. m.asurem.nt of th. convective h.at transfer coefficient on th. solid-fluid interface by th. pulsed ph.toth.rm.l *** non-intrusive tech.ique is apph.d for th. m.asurem.nt of th. local h.at transfer coefficients in cooling of a rectangular slab th.t sim.lates an electronic *** h.at transfer coefficient is deduced from.th. evolution of th. transient tem.erature induced by a sudden deposit of a lum.nous energy on th. front face of th. *** order to draw up th. h.at transfer cartograph. by a non-destructive tool, th. infrared th.rm.graph. h.s been *** inverse tech.iques for th. identification of th. h.at transfer coefficient are presented *** first one is based on th. assum.tion th.t h.at transfer coefficient rem.ins constant during th. pulsed experim.nt,and th. second one considered it variable in space and *** tem.oral and spatial evolutions are expressed as a constant h.at transfer coefficient(h.0)m.ltiplied by a function of tim. and space f(x,t).Th. function f is deduced from.th. resolution of th. conjugated convection-conduction problem.by a control volum. tech.ique for th. case of th.rm.lly th.ck *** results are given for different air velocities and deflection angles of th. flow.

关键词： pulsed m.th.d infrared th.rm.graph. convective h.at transfer inverse m.th.d.

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rufous-and-wh.te wrens Th.yoph.lus rufalbus do not exh.bit a dear enem. effects towards conspecific or h.terospecific com.etitors

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Current Zoology 2015年第1期61卷 23-33页

作者： m.tth.w m. BATTISTON David r. WILSON Brendan A. GrAh.m.Kristin A. KOVACh.daniel J. m.NNILL departm.nt of Biological Sciences University of Windsor Windsor Ontario Canada N9B 3P4

m.ny territorial anim.ls exh.bit reduced aggression towards neigh.ours. Known as ＂th. dear enem. effect＂, th.s ph.nom.non h.s been docum.nted am.ng conspecific anim.ls across a wide range of anim.l taxa. In th.ory, th. dear enem. ef- fect can also exist between individuals of different species, particularly wh.n th.se species com.ete for sh.red resources. To date, a h.terospecific dear enem. effects h.s only been docum.nted in ants. In th.s study, we test for both.a conspecific and h.terospe- cific dear enem. effect in neotropical rufous-and-wh.te wrens Th.yoph.lus rufalbus. Th.s species com.etes for resources with.banded wrens Th.yoph.lus pleurostictus, a closely related sym.atric congener. We used acoustic playback to sim.late ruf- ous-and-wh.te wren and banded wren neigh.ours and non-neigh.ours at th. edges of rufous-and-wh.te wren territories. ruf- ous-and-wh.te wrens responded m.re strongly to signals from.th.ir own species, dem.nstrating th.t resident m.les discrim.nate between conspecific and h.terospecific rivals. Th.y did not, h.wever, exh.bit a conspecific dear enem. effect. Furth.r, th.y did not exh.bit a h.terospecific dear enem. effect. Th.s could be due to neigh.ours and non-neigh.ours posing sim.lar levels of th.eat in th.s system. to th. possibility th.t playback from.th. edges of th. subjects＇ large territories did not sim.late a th.eatening signal, or to oth.r factors. Our study provides th. first test of a h.terospecific dear enem. effect in vertebrates, and presents a valuable experim.ntal approach.for testing for a h.terospecific dear enem. effect in oth.r anim.ls [Current Zoology 61 （1）： 23-33, 2015].

关键词： Conspecific aggression dear enem. effect h.terospecific aggression Intra-specific interactions Inter-specific interactions resource com.etition

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A robust online path.planning approach.in cluttered environm.nts for m.cro rotorcraft drones

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Control Th.ory and Tech.ology 2016年第1期14卷 83-96页

作者： Sh.peng LAI Kangli WANG h.ilong QIN Jin Q. CUI ben m. Ch.N NUS Graduate Sch.ol for Integrative Sciences & Engineering National University of Singapore Singapore 117456 departm.nt of Electrical & Com.uter Engineering National University of Singapore Singapore 117583 Tem.sek Laboratories National University of Singapore Singapore 117411

We present in th.s paper a robust online path.planning m.th.d, wh.ch.allows a m.cro rotorcraff drone to fly safely in GPS-denied and obstacle-strewn environm.nts with.lim.ted onboard com.utational power. Th. approach.is based on an effi- ciently m.naged grid m.p and a closed-form.solution to th. two point boundary value problem.（TPBVP）. Th. grid m.p assists trajectory evaluation wh.reas th. solution to th. TPBVP generates sm.oth.trajectories. Finally, a top-level trajectory switch.ng algorith. is utilized to m.nim.ze th. com.utational cost. Advantages of th. proposed approach.include its conservation of com. putational resource, robustness of trajectory generation and agility of reaction to unknown environm.nt. Th. result h.s been realized on actual drones platform. and successfully dem.nstrated in real fligh. tests. Th. video of fligh. tests can be found at： h.tp：//***/***.

关键词： Unm.nned aerial veh.cles m.pping path.planning trajectory generation

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