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Photonics Research 2017年第2期5卷 35-43页

作者： MOHAMED SUFYAN ISLIM RICARDO X.FERREIRA XIANGYU HE ENYUAN XIE STEFAN VIDEV shaun viola SCOTT WATSON NIKOLAOS BAMIEDAKIS RICHARD V.PENTY IAN H.WHITE ANTHONY E.KELLY ERDAN GU HARALD HAAS MARTIN D.DAWSON Li–Fi R&D Centre the University of Edinburgh Institute for Digital Communications Institute of Photonics Department of Physics University of Strathclyde Institute for Digital Communications Li–Fi R&D Centre the University of Edinburgh School of Engineering University of Glasgow Centre for Advanced Photonics and Electronics Electrical Engineering Division Department of Engineering University of Cambridge

Visible light communication(VLC)is a promising solution to the increasing demands for wireless *** nitride micro-sized light emitting diodes(micro-LEDs)are strong candidates for VLC due to their high *** violet micro-LEDs are reported in this work with electrical-to-optical bandwidths up to 655 *** orthogonal frequency division multiplexing-based VLC system with adaptive bit and energy loading is demonstrated,and a data transmission rate of 11.95 Gb/s is achieved with a violet micro-LED,when the nonlinear distortion of the micro-LED is the dominant noise source of the VLC system.A record 7.91 Gb/s data transmission rate is reported below the forward error correction threshold using a single pixel of the segmented array when all the noise sources of the VLC system are present.

关键词： Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED VLC OFDM LEDs

Deforestation in Latin America in the 2000s predominantly occurred outside of typical mature forests

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The Innovation 2024年第3期5卷 88-98页

作者： Zhiyu Zhang Wenjian Ni shaun Quegan Jingming Chen Peng Gong Luiz Carlos Estraviz Rodriguez Huadong Guo Jiancheng Shi Liangyun Liu Zengyuan Li Yating He Qinhuo Liu Yosio Shimabukuro Guoqing Sun Key Laboratory of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Shijingshan DistrictBeijing 100049China Chinal of Mathematics and Statistics University of SheffieldSheffield S37RHUK Department of Geography and Program in Planning University of TorontoTorontoON M5S 3G3Canada Department of Earth Sciences and Department of Geography University of Hong KongHong KongChina Forest Science Department Luiz de Queiroz College of AgricultureUniversity of São PauloAv.Pádua Dias11Piracicaba 13418-900Brazil National Space Science Center Chinese Academy of SciencesBeijing 100190China Institute of Forest Resource Information Techniques Chinese Academy of ForestryBeijing 100091China Research Institute of Forest Policy and Information Chinese Academy of ForestryBeijing 100091China Remote Sensing Department National Institute for Space Research(INPE)Av.dos Astronautas 1758São Josédos Campos 12227-010Brazil Department of Geographical Sciences University of MarylandCollege ParkMD 20742USA

The role of tropical forests in the global carbon budget remains controversial,as carbon emissions from deforestation are highly *** high uncertainty arises from the use of either fixed forest carbon stock density or maps generated from satellite-based optical reflectance with limited sensitivity to biomass to generate accurate estimates of emissions from *** space missions aiming to accurately map the carbon stock density rely on direct measurements of the spatial structures of forests using lidar and *** found that lost forests are special cases,and their spatial structures can be directly measured by combining archived data acquired before and after deforestation by space missions principally aimed at measuring ***,using biomass mapping,we obtained new estimates of carbon loss from deforestation ahead of forthcoming space ***,using a high-resolution map of forest loss and the synergy of radar and lidar to estimate the aboveground biomass density of forests,we found that deforestation in the 2000s in Latin America,one of the severely deforested regions,mainly occurred in forests with a significantly lower carbon stock density than typical mature forests.

关键词： forest Latin lidar

Comparison of trigeminal lateralization with differing stimulants

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第1期10卷 66-69页

作者： Tiffany Chen Nicolas S.Poupore Michael C.Shih Thomas S.Edwards shaun A.Nguyen Zachary M.Soler Rodney J.Schlosser Department of Otolaryngology‐Head and Neck Surgery Medical University of South CarolinaCharlestonSouth CarolinaUSA

Trigeminal-specific stimulants have been shown to activate different receptors preferentially and this likely accounts for variation in sensory *** is unclear whether trigeminal sensitivity is similar across different transient receptor potential(TRP)receptors or if dysfunction of different receptors results in differing patient ***,a prospective cohort study was conducted,consisting of trigeminal lateralization testing with three different stimulants(eucalyptol,isothiocyanate,acetic acid),olfaction testing with Sniffin'Sticks,and measurement of various patient‐reported outcome measures(PROMs).A total of 50 participants were enrolled across the olfactory *** TDI score was 27.1±8.3(range 7.0–39.5)with 38%normosmic and 62%*** trigeminal lateralization scores out of 20 in the overall cohort were 16.18(2.78)for eucalyptol,14.94(3.49)for mustard oil,and 15.28(3.68)for *** showed a significant correlation with threshold scores of Sniffin'Sticks.A significant correlation was found between acetic acid and various *** of the lateralization scores of the trigeminal stimulants correlated to each other significantly and there was no correlation to *** lack of correlation suggests that the measured sensitivity of one type of TRP receptor may not translate to similar sensitivity of the other *** investigations with TRPV1 and TRPA1 agonists are needed to corroborate our findings.

关键词： chemosensory olfaction trigeminal TRP receptor

A framework for quantifying properties of 3-dimensional movement-based signals

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Current Zoology 2010年第3期56卷 327-336页

作者： shaun TD NEW Richard A PETERS ARC Centre of Excellence in Vision Science Division of EvolutionEcology & GeneticsResearch School of BiologyThe Australian National University

Understanding how signal properties are optimized for the reliable transmission of information requires accurate de- scription of the signal in time and space. For movement-based signals where movement is restricted to a single plane, measure- ments from a single viewpoint can be used to consider a range of viewing positions based on simple geometric calculations. However, considerations of signal properties from a range of viewing positions for movements extending into three-dimensions （3D） are more problematic. We present here a new framework that overcomes this limitation, and enables us to quantify the extent to which movement-based signals are view-specific. To illustrate its application, a Jacky lizard tail flick signal was filmed with synchronized cameras and the position of the tail tip digitized for both recordings. Camera aligmnent enabled tl^e construction of a 3D display action pattern profile. We analyzed the profile directly and used it to create a detailed 3D animation. In the virtual environment, we were able to film the same signal from multiple viewing positions and using a computational motion analysis algorithm （gradient detector model） to measure local image velocity in order to predict view dependent differences in signal properties. This approach will enable consideration of a range of questions concerning movement-based signal design and evolu- tion that were previously out of reach [Current Zoology 56 （3）： 327-336, 2010].

关键词： Signal evolution Sensory Ecology Movement-based signal 3D Display Action Pattern

Early evolution of vertebrate photoreception: lessons from lampreys and lungfishes

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Integrative Zoology 2009年第1期4卷 87-98页

作者： shaun P.COLLIN Sensory Neurobiology Group School of Biomedical SciencesThe University of QueenslandBrisbaneAustralia

Lampreys(Agnatha)and lungfish(Dipnoi)are representatives of the earliest and the intermediate stages in ver-tebrate evolution,respectively,and survived in the Cambrian(approximately 540 mA,lampreys)and Devonian(approximately 400 mA,lungfishes)*** unique phylogenetic position of these two groups presents us with an exciting opportunity to understand life in ancient times and to begin to trace the evolution of vision and photoreception in *** a multidisciplinary approach employing anatomical and molecular techniques,the evolution of photoreception is explored in these extant,living fossils to predict the environmental lighting conditions to which our vertebrate ancestors were *** to expectations,the retinae of the southern hemisphere lamprey(Geotria australis Gray,1851)and the Australian lungfish(Neoceratodus forsteri Krefft,1870)are far from“primitive,”each possessing five types of photoreceptors,many with spectral filters for tuning the *** ultrastructural analysis reveals that all five receptor types in *** are cone-like,whereas *** possesses four cone types and a single type of *** receptor type also contains a different visual pigment(opsin gene);that is,LWS,SWS1,SWS2,RhA and RhB in *** and LWS,SWS1,SWS2,Rh1 and Rh2 in ***,all of which are expressed within the retina and are sensitive to different parts of the electromagnetic spectrum,providing the potential for pentachromatic and tetrachromatic color vision,respectively.

关键词： color vision evolution fishes photoreceptors retina.

Factorizations that Involve Ramanujan＇s Function k（q） = r（q）r2（q2）

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Acta Mathematica Sinica,English Series 2011年第12期27卷 2301-2308页

作者： shaun COOPER Michael D. HIRSCHHORN Institute of Information and Mathematical Sciences Massey University-Albany Private Bag 102904North Shore Mail Centre Auckland New Zealand School of Mathematics and Statistics UNSW Sydney NSW 2（}52 Australia

In the ＂lost notebook＂, Ramanujan recorded infinite product expansions for where r -= r（q） is the Rogers-Ramanujan continued fraction. We shall give analogues of these results that involve Ramanujan＇s function k ... 详细信息

关键词： Infinite product Rogers-Ramanujan continued fraction Jacobi triple product identity

To forage or hide？ Threat-sensitive foraging behaviour in wild, non-reproductive passerine birds

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Current Zoology 2014年第6期60卷 719-728页

作者： shaun TURNEY Jean-Guy J. GODIN Department of Biology Carleton University Ottawa ON K1 S 5B6 Canada Department of Biology McGill University Montreal QC H3A 1B 1 Canada

Because antipredator behaviours are costly, the threat-sensitive predator avoidance hypothesis predicts that individual animals should express predator-avoidance behaviour proportionally to the perceived threat posed by the predator. Here, we experimentally tested this hypothesis by providing wild passerine birds supplemental food （on a raised feeding platform） at either 1 or 4 m from the edge of forest cover （potential refuge）, in either the presence or absence of a nearby simulated predation threat （a sharp-shinned hawk Accipiter striatus model）. Compared with the control treatment, we observed proportionally fewer bird visits to the food patch, and the birds took longer to re-emerge from forest refuge and return to feed at the food patch, after the hawk presentation than before it. The observed threat-sensitive latency-to-return response was stronger when the food patch was further away from the nearest refuge. Overall, our results are consistent with the predictions of the threat-sensitive predator avoidance hypothesis in that wild passerine birds （primarily black-capped chickadees Poecile atricapillus） exhibited more intense antipre- dator behavioural responses with increasing level of apparent threat. The birds were thus sensitive to their local perceived threat of predation and traded-off safety from predation （by refuging） and foraging gains in open habitat in a graded, threat-sensitive manner [Current Zoology 60 （6）： 719-728, 2014].

关键词： Foraging Predation risk Threat sensitivity Risk taking Distance-to-refuge Birds

Vision and photoentrainment in fishes: The effects of natural and anthropogenic perturbation

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Integrative Zoology 2015年第1期10卷 15-28页

作者： shaun P.COLLIN Nathan S.HART School of Animal Biology and the Oceans Institute University of Western AustraliaCrawleyWestern AustraliaAustralia

Vision and photoentrainment in fishes are vital for feeding,avoiding predation,spatial orientation,navigation,social communication and the synchronization of many homeostatic functions such as activity patterns and *** camera-like(image-forming)eyes of fishes are optimized to provide a clear view of their preferred ecological niche,while non-visual photoreceptors provide irradiance detection that mediates circadian photoentrainment,an endogenous time-keeping mechanism(biological clock)to respond to predictable changes in environmental *** and fisheries are under pressure from both natural and anthropogenic perturbation,which in many cases alters the intensity and spectral composition of the light environment on which they depend for their *** review examines the effects of a changing light environment and turbidity on the health of fishes within a developmental and ecological *** the sensory environment of fishes is vital to predicting their responses and,ultimately,their resilience to environmental change and the potential for maintaining sustainable levels of biodiversity.

关键词： circadian rhythms ecology environment photoreception turbidity

The Normative Basis of Global Governance

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Fudan Journal of the Humanities and Social Sciences 2020年第1期13卷 1-5页

作者： shaun Breslin Department of Politics and International Studies University of WarwickCoventryUK

How,if at all,are rising powers challenging the existing normative basis of global governance orders?This introduction establishes the overarching framework fbr the papers in this special issue,and outlines the questi... 详细信息

关键词： Global governance Global norms Rising powers

Predicting the Thermal Behavior in Functional Textile Fibers Having Embedded Electronics

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Advanced Fiber Materials 2022年第6期4卷 1609-1619页

作者： shaun Berry Shawn Redmond Tairan Wang Mordechai Rothschild MIT Lincoln Laboratory 244 Wood StreetLexingtonMA 02421USA

In this paper,both steady-state and transient thermal simulations were performed on functional fibers having an embedded electronic chip acting as a heat *** were conducted for a range of different fiber materials and arbitrary fiber cross-sectional *** show that under steady-state heating conditions,the thermal response for any arbitrary fiber shape and fiber material system was convection dominated regardless of the effective thermal conductivity of the fiber,and that the corresponding temperature rise within the fiber can be predicted analytically allowing for the maximum temperature to be estimated for any known heat load and fiber *** the case of transient heating,we show that for pulsed power operation of the embedded electronic device,the maximum temperature reached in the fiber is always greater than the maximum temperature of the equivalent steady-state average ***,high peak powers can be safely achieved if the power-on pulse time and duty cycle are selected to limit the maximum temperature reached in the *** on the results from the transient simulations,a set of criteria was developed to determine whether the operating conditions would be:(1)allowable for the fiber system,thus requiring no transient simulations,(2)requiring a transient simulation to verify that the maximum temperature is acceptable,and(3)the operating conditions are too severe and device operation at these conditions are not practical.

关键词： Functional fibers Smart fibers Thermal modeling Fabrics MOEMS