2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications最新文献_第4页

Porting a process-based crop model to a high-performance computing environment for plant simulation 将基于过程的作物模型移植到用于植物模拟的高性能计算环境中

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524873

Gang Zhao, Xiaodong Song, Changqing Yan, Qiang Yu

{"title":"Porting a process-based crop model to a high-performance computing environment for plant simulation","authors":"Gang Zhao, Xiaodong Song, Changqing Yan, Qiang Yu","doi":"10.1109/PMA.2012.6524873","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524873","url":null,"abstract":"Increasing concerns about food security have stimulated integrated assessment of the sustainability of agricultural systems at regional, national and global scales with high-resolution. Traditionally, the process-based agricultural models are designed for field scale studies that obtain inputs, run the simulations and provide outputs through the graphic interface. The graphic interface based model dose not suit for modelling practices requiring a large number of simulations. Here, we developed a high performance approach which concurrently executed the Agricultural Production Systems sIMulator (APSIM) simulations using parallel programming techniques. In this approach, an APSIM simulation template with replaceable parameters was firstly designed, and new simulations based on the template was then constructed by dynamically replacing parameters of climate, soil and management options. We parallelized the batched running method in a shared-memory multiprocessor system using Python's Multiprocessing module. We tested the approach with a case study that simulated the productivity of continuous wheat cropping system during 20 years period along the Australian cereal-growing regions under management practices of 5 levels nitrogen application and 3 stubble management practices. More than 170 K runs were finished in 43h by using 64 workers, achieved a speedup ratio of 60. The parallelized method proposed in this study makes large-scale and high-resolution agricultural systems assessment possible.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129306544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Topological object types for morphodynamic modeling languages 形态动态建模语言的拓扑对象类型

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524805

E. Mjolsness, A. Cunha

{"title":"Topological object types for morphodynamic modeling languages","authors":"E. Mjolsness, A. Cunha","doi":"10.1109/PMA.2012.6524805","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524805","url":null,"abstract":"We survey useful ingredients for a new class of mathematical process-modeling languages aimed at spatial and developmental biology. Existing modeling languages for computational systems biology do not fully address the problems of spatial modeling that arise in morphodynamics (the local dynamics of form) and its applications to biological development. We seek to extend the operator algebra semantics approach from our previous “Dynamical Grammars” modeling language, whose most spatial object type is the labelled graph, to encompass more flexible topological objects. Taking clues from current developments in 3D meshing and from topological modeling for biology, illustrated by a plant tissue example, we seek language support for the approximation of low-dimensional CW complexes (which are nontrivial topological spaces, with cardinality of the continuum) and dynamic fields thereon, by finite labelled abstract complexes. Some of the proposed types would be computationally demanding, without further restriction. Restrictions and control of these approximations can be specified by use of “metricated” types. Minimally, such approximations should permit the accurate simulation of spatial diffusion processes.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117054008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Use of a structure-function plant model to assess the morphogenetic plasticity. How does variation in phyllochron modify plant growth and development of Brassica napus in the GreenLab model? 利用结构-功能植物模型评估形态发生可塑性。在GreenLab模型中，叶根色素的变化如何改变甘蓝型油菜的生长发育?

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524831

A. Jullien, A. Mathieu, B. Ney, Rui Qi, J. Allirand, Céline Richard-Molard

引用次数: 3

Calibration and validation of SIMRIW in major rice production regions in China SIMRIW在中国主要水稻产区的校准与验证

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524872

Shuai Zhang, F. Tao

引用次数: 0

Interspecific variability of biomass production of young Coffea: No influence of branch pruning. Experimental evidence and theoretical analysis 幼咖啡生物量生产的种间变异:分枝修剪不影响。实验证据和理论分析

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524838

V. Letort, S. Sabatier, S. Akaffou, S. Hamon, P. Hamon, P. de Reffye

引用次数: 3

Characterization of whole plant leaf area properties using laser scanner point clouds 利用激光扫描仪点云表征整株植物叶面积特性

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524842

Louarn Gaëtan, Carré Serge, Boudon Frédéric, Eprinchard Annie, Combes Didier

引用次数: 13

Evaluating the contribution of complementary radiation on photosynthesis of maize canopy with 3D radiative transfer model 利用三维辐射传输模型评价互补辐射对玉米冠层光合作用的贡献

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524835

C. Lao, Y. Kong, Fan Huang, B. Li, Yan Guo

{"title":"Evaluating the contribution of complementary radiation on photosynthesis of maize canopy with 3D radiative transfer model","authors":"C. Lao, Y. Kong, Fan Huang, B. Li, Yan Guo","doi":"10.1109/PMA.2012.6524835","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524835","url":null,"abstract":"Photosynthesis of a canopy is primarily determined by its interception of solar radiation. Previous studies used to ignore the effects of complementary radiation (radiation scattered by canopy components) by taking leaf as black body in calculating the interception of photosynthetic active radiation. However, some recent researches suggested that complementary radiation may raise light utilization efficiency of plant canopy and its influence on photosynthesis cannot be ignored. In this study, Parallel Monte Carlo ray tracing model for three-dimensional canopy was employed to simulate the process of radiative transfer within maize canopies for quantifying the complementary radiation from leaves and its contribution to canopy photosynthetic production. It is suggested that scattering radiation can play a significant role in the middle and lower layers of a dense maize canopy and its contribution to light interception and photosynthetic production in a canopy is dependent on the solar elevation and canopy structure parameters such as leaf area index and leaf area density.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122765371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Additive aboveground biomass equations for major tree species in over-logged forest region in northeast China 东北过伐林区主要树种地上生物量的加性方程

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524837

X. Lei, Huiru Zhang, Huiquan Bi

引用次数: 4

Towards a multi-scaled Functional-Structural Model of apple, linking ecophysiology at the fruit and branch scales 苹果多尺度功能结构模型的建立，将果实和枝条的生理生态联系起来

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524814

G. Buck-Sorlin, P. Guillermin, M. Delaire, F. Sane, Chirstian Le-Morvan

引用次数: 0

Visualization with Google Earth and gaming engine 可视化与谷歌地球和游戏引擎

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524868

Dar-Hsiung Wang, Han-Ching Hsieh, Chin-Shien Wu, T. Honjo, Yu-Jen Chiang, P. Yang

引用次数: 1