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Simulation and Visualisation of Functional Landscapes:Effects of the Water Resource Competition Between Plants

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Journal of Computer Science & Technology 2007年第6期22卷 835-845页

作者： Vincent Le Chevalier Marc Jaeger 梅兴 Paul-henry Cournède Ecole Centrale Paris Laboratory of Applied Mathematics and Systems Grande Voie des Vignes 92295 Chatenay-MalabryFrance INRIA Futurs DigiPlante TeamCIRAD AMAPTA A-51/PS2 34398 Montpellier Cedex 5France Sino-French Laboratory LIAMA Institute of AutomationChinese Academy of Sciences

Vegetation ecosystem simulation and visualisation are challenging topics involving multidisciplinary aspects. In this paper, we present a new generic frame for the simulation of natural phenomena through manageable and interacting models. It focuses on the functional growth of large vegetal ecosystems, showing coherence for scales ranging from the individual plant to communities and with a particular attention to the effects of water resource competition between plants. The proposed approach is based on a model of plant growth in interaction with the environmental conditions. These are deduced from the climatic data （light, temperature, rainfall） and a model of soil hydrological budget. A set of layers is used to store the water resources and to build the interfaces between the environmental data and landscape components： temperature, rain, light, altitude, lakes, plant positions, biomass, cycles, etc. At the plant level, the simulation is performed for each individual by a structural-functional growth model, interacting with the plant＇s environment. Temperature is spatialised, changing according to altitude, and thus locally controls plant growth speed. The competition for water is based on a soil hydrological model taking into account rainfalls, water runoff, absorption, diffusion, percolation in soil. So far, the incoming light radiation is not studied in detail and is supposed constant. However, competition for light between plants is directly taken into account in the plant growth model. In our implementation, we propose a simple architecture for such a simulator and a simulation scheme to synchronise the water resource updating （on a temporal basis） and the plant growth cycles （determined by the sum of daily temperatures）. The visualisation techniques are based on sets of layers, allowing both morphological and functional landscape views and providing interesting tools for ecosystem management. The implementation of the proposed frame leads to encouraging resu

关键词： landscape visualisation plant growth models natural phenomena simulation water cycle models

A model of vehicle replacement time with overloading cost constraint

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Journal of Management Analytics 2018年第4期5卷 350-370页

作者： henry Inegbedion Maurice Aghedo Department of Business Studies College of Business and Social SciencesLandmark UniversityOmu AranKwara StateNigeria Department of Business Administration Faculty of Management SciencesUniversity of BeninBenin CityNigeria

Vehicle replacement time depends mainly on the rate of *** has been found to be a significant factor of deterioration and cost *** examined the impact of overloading on vehicle deterioration and its total costs and hence the replacement time of vehicle fleets in *** research design was a mixture of field survey and a longitudinal study of vehicle fleets of three transport companies in Benin City,*** population of the study consisted of all interstate transport companies in Benin ***-stage sampling was used to select the three transport companies *** overloading factor was developed and used to estimate the cost of operating overloaded *** data were analysed using discrete dynamic programming,which was implemented using computer software developed through Pascal *** indicate that overloading significantly precipitates vehicle deterioration,increases operating and total cost and thus affects replacement time of vehicles.

关键词： overloading vehicle replacement time vehicle deterioration replacement time optimum replacement time overloading cost

Climatic Fluctuation of Marine Isotope Stage 9: A Case Study in the Southern Margin of the Chinese Loess Plateau

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Journal of Earth Science 2023年第5期34卷 1556-1566页

作者： Tieniu Wu Antai Cheng henry Lin Hailin Zhang Yi Jie Key Laboratory for Geographical Process Analysis&Simulation Hubei ProvinceCentral China Normal UniversityWuhan 430079China Department of Ecosystem Science and Management The Pennsylvania State UniversityUniversity ParkPA 16802U.S.A. College of Urban and Environmental Sciences Central China Normal UniversityWuhan 430079China

Marine Isotope Stages(MIS) 9 has been proposed as an analog for the present warm period. However, detailed studies of this geological time period are rare in loess-paleosol sequence. In the Chinese Loess Plateau(CLP), the corresponding stratum is the third paleosol layer(S3). Here, we report the terrestrial reconstruction of climatic fluctuations during MIS 9 by analyzing the paleo-climate indexes of S3 with high sampling density. Our results showed that:(1) During the period of MIS 9, the main climatic sub-cycle was 29 ka;(2) MIS 9 could be divided into five sections, MIS 9a, 9b, 9c, 9d, and 9e. Among them, MIS 9a, 9c, and 9e were warm stages, while MIS 9b and 9d were cool intervals;and 3) There were also three swift warm-wet events and one cool-dry event, which occurred around 332 –331, 324–323, 311–310, and 331–329 ka BP, respectively. The overall trend of paleo-climate fluctuation correlated approximately with SPECMAP, LR04 stack and Iberian margin deep-sea cores. This study suggested that the paleosol records in the southern margin of the CLP have global significance and contain more detailed climatic signals than marine deposits.

关键词： MIS 9 climatic fluctuation Paleosol S3 Chinese Loess Plateau environmental geology

Distance-directed Target Searching for a Deep Visual Servo SMA Driven Soft Robot Using Reinforcement Learning

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Journal of Bionic Engineering 2020年第6期17卷 1126-1138页

作者： Wuji Liu Zhongliang Jing Han Pan Lingfeng Qiao henry Leung Wujun Chen School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China Deparment of Elecrical and Computer Engineering University of CalgaryCalgary AB 72N 1N4Canada School of Naval Architecture Ocean&Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Performing complex tasks by soft robots in constrained environment remains an enormous challenge owing to the limitations of flexible mechanisms and control *** this paper,a novel biomimetic soft robot driven by Shape Memory Alloy(SMA)with light weight and multi-motion abilities is *** adapt deep learning to perceive irregular targets in an unstructured *** at the target searching task,an intelligent visual servo control algorithm based on Q-leaming is proposed to generate distance-directed end effector *** particular,a threshold reward system for the target searching task is proposed to enable a certain degree of tolerance for pointing *** addition,the angular velocity and working space of the end effector with load and without load based on the established coupling kinematic model are *** framework enables the trained soft robot to take actions and perform target *** experiments under different conditions demonstrate the convergence of the learning process and effectiveness of the proposed algorithm.

关键词： biomimetic soft robot SMA deep visual servo Q-leaming

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Promise of Bluebirds

中国翻译 1995年第6期 56-57页

作者： Joanne J. henry

THE PENNSYLVANIA LANDSCAPE wasin severe wintry garb as our car sped west over theinterstate. The season was wrong, but I couldn’tget blue-birds out of my head. Only three weeks before, at Christmas, Dadhad give me a nesting box he’d made. He had aspecial feeling for the brilliant creatures, and cachspring he eagerly awaited their return. Now Iwondered, will he ever see one again?

关键词： Promise of Bluebirds

Recent Advances in Organ Specific Wireless Bioelectronic Devices:Perspective on Biotelemetry and Power Transfer Using Antenna Systems

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Engineering 2022年第4期8卷 27-41页

作者： Ahsan Noor Khan Young-Ok Cha henry Giddens Yang Hao School of Electronic Engineering and Computer Science Queen Mary University of LondonLondon E14NSUK

The integration of electronics and biology has spawned bioelectronics and opened exciting opportunities to fulfill the unmet needs of therapeutic *** developments in nanoelectronics and soft and biocompatible materials have shown potential applicability to clinical practices,including physiological sensing,drug delivery,cardiovascular monitoring,and brain *** date,most bioelectronic devices require wired connections for electrical control,making their implantation complicated and inconvenient for *** an alternative,wireless technology is proliferating to create bioelectronics that offer noninvasive control,biotelemetry,and wireless power transfer(WPT).This review paper provides a comprehensive overview of wireless bioelectronics and ongoing developments in their applications for organ-specific treatments,including disorders and *** main emphasis is on delineating the key features of antennas,namely their radiation characteristics,materials,integration with rest of the electronics,and experimental *** the recent progress in wireless mediated bioelectronics is expected to enhance the control of its functionalities,there are still numerous challenges that need to be addressed for commercialization,as well as to address everexpanding and evolving future therapeutic targets.

关键词： Bioelectronics Neural implants Drug delivery Antennas Wireless power

The transcriptomic signature of responses to larval crowding in Drosophila melanogaster

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Insect Science 2023年第2期30卷 539-554页

作者： Juliano Morimoto Marius Wenzel Davina Derous Youn henry Herve Colinet School of Biological Sciences University of AberdeenAberdeenUnited Kingdom Programa de Pos-graduacao em Ecologia e Conservacao Universidade Federal do ParanaCuritibaBrazil Institute of Mathematics King's CollegeUniversity of AberdeenAberdeenUnited Kingdom CNRS ECOBIO(Ecosystemesbiodiversiteévolution)—UMR 6553University of RennesRennesFrance Department of Ecology and Evolution University of LausanneLausanneSwitzerland

Intraspecific competition at the larval stage is an important ecological factor affecting life-history,adaptation and evolutionary trajectory in holometabolous ***,the molecular pathways underpinning these ecological processes are poorly *** reared Drosophila melanogaster at three egg densities(5,60,and 300 eggs/mL)and sequenced the transcriptomes of pooled third-instar *** also examined emergence time,egg-to-adult viability,adult mass,and adult sex-ratio at each *** crowding had minor detrimental effects on adult phenotypes compared to low density and yielded 24 differentially expressed genes(DEGs),including several chitinase *** contrast,high crowding had substantial detrimental effects on adult phenotypes and yielded 2107 *** these,upregulated gene sets were enriched in sugar,steroid and amino acid metabolism as well as DNA replication pathways,whereas downregulated gene sets were enriched in ABC transporters,taurine,Toll/Imd signaling,and P450 xenobiotics metabolism ***,our findings show that larval crowding has a large consistent effect on several molecular pathways(i.e.,core responses)with few pathways displaying density-specific regulation(i.e.,idiosyncratic responses).This provides important insights into how holometabolous insects respond to intraspecific competition during development.

关键词： intraspecific competition larval crowding life-history trade-offs transcriptomics

Pheromone Static Routing Strategy for Complex Networks

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Chinese Physics Letters 2012年第12期29卷 254-257页

作者： HU Mao-Bin henry Y.K.Lau LING Xiang JIANG Rui Department of Industrial and Manufacturing Systems Engineering The University of Hong KongPokfulam RoadHong Kong School of Engineering Science University of Science and Technology of ChinaHefei 230026 School of Transportation Engineering Hefei University of TechnologyHefei 230009

We adopt the concept of using pheromones to generate a set of static paths that can reach the performance of global dynamic routing strategy[***.E 81(2010)016113].The path generation method consists of two *** the first stage,a pheromone is dropped to the nodes by packets forwarded according to the global dynamic routing *** the second stage,pheromone static paths are generated according to the pheromone *** output paths can greatly improve traffic systems'overall capacity on different network structures,including scale-free networks,small-world networks and random *** the paths are static,the system needs much less computational resources than the global dynamic routing strategy.

关键词： network networks Complex

Organic Synthesis:A Plea for Pure Science

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The Innovation 2021年第1期2卷 135-136页

作者： henry N.C.Wong School of Science and Engineering The Chinese University of Hong KongShenzhen2001 Longxiang Boulevard.Longgang DistrictShenzhen 518172China Department of Chemistry The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina

In 1883,henry ***,the first President of the American Physical Society and Professor of Physics at Johns Hopkins University,published an essay entitled“A Plea for Pure Science”in Popular Science *** took the development of gunpowder as an example to emphasize that SCIENCE itself must be sought in the applications of science.“They(Chinese)have known the application of gunpowder for centuries;and yet the reasons for its peculiar action,if sought in the proper manner,would have developed the science of chemistry,and even of physics,with all their numerous applications.”

关键词： Popular sought Hopkins