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Definition and Implementation of a SAML-XACML Profile for Authorization Interoperability Across Grid Middleware in osg and EGEE

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JOURNAL OF GRID COMPUTING 2009年第3期7卷 297-307页

作者： Garzoglio, Gabriele Alderman, Ian Altunay, Mine Ananthakrishnan, Rachana Bester, Joe Chadwick, Keith Ciaschini, Vincenzo Demchenko, Yuri Ferraro, Andrea Forti, Alberto Groep, David Hesselroth, Ted Hover, John Koeroo, Oscar La Joie, Chad Levshina, Tanya Miller, Zach Packard, Jay Sagehaug, Hakon Sergeev, Valery Sfiligoi, Igor Sharma, Neha Siebenlist, Frank Venturi, Valerio Weigand, John Fermilab Natl Accelerator Lab Batavia IL 60510 USA Univ Wisconsin Madison WI USA Argonne Natl Lab Argonne IL 60439 USA INFN CNAF Bologna Italy Univ Amsterdam Amsterdam Netherlands NIKHEF Amsterdam Netherlands BNL Upton NY USA SWITCH Zu Switzerland BCCS Bergen Norway

In order to ensure interoperability between middleware and authorization infrastructures used in the Open Science Grid (osg) and the Enabling Grids for E-science (EGEE) projects, an Authorization Interoperability activity was initiated in 2006. The interoperability goal was met in two phases: firstly, agreeing on a common authorization query interface and protocol with an associated profile that ensures standardized use of attributes and obligations;and secondly implementing, testing, and deploying on osg and EGEE, middleware that supports the interoperability protocol and profile. The activity has involved people from osg, EGEE, the Globus Toolkit project, and the Condor project. This paper presents a summary of the agreed-upon protocol, profile and the software components involved.

关键词： Authorization Interoperability SAML-XACML osg EGEE

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Capacity Comparison for CSG and osg OFDMA Femtocells

Capacity Comparison for CSG and OSG OFDMA Femtocells

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Globecom Workshops

作者： Tsai, Ang-Hsun Huang, Jane-Hwa Wang, Li-Chun Hwang, Ruey-Bing Natl Chiao Tung Univ Hsinchu Taiwan Natl Chi Nan Univ Nantou 54561 Taiwan

ISBN: (纸本)9781424488650

The low-power and low-cost femtocells can improve indoor coverage and capacity. However, when femtocells are deployed extensively, the serious two-tier interference problem occurs. The method to access the femtocell is the key to manage the interference in the femtocell systems. In this paper, we investigate the impacts of access methods and directional antenna on link reliability and capacity for the orthogonal frequency-division multiple access (OFDMA)-based femtocell systems. Simulation results show that the open access method can improve the femtocell capacity over the traditional closed access method. Nevertheless, under the link reliability requirement of indoor and outdoor users, the improvement in femtocell capacity due to open access method is minor. Thanks to the narrow-beam pattern, the switched-beam directional antenna can be used to further reduce the interference and enhance the capacity. It is shown that the open access method using the switched-beam antenna can achieve higher femtocell capacity than that using the omnidirectional antenna.

关键词： Femtocell OFDMA CSG osg two-tier interference link reliability switched-beam directional antenna

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Small scale wind field display and wind motion simulation based on osg 7

Small scale wind field display and wind motion simulation ba...

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7th International Conference on Virtual Reality and Visualization (ICVRV)

作者： Kui, Hu Li Jian-wei Luo Yong-zhen Fuzhou Univ Sch Phys & Informat Engn Fuzhou 350100 Fujian Peoples R China

ISBN: (纸本)9781538626368

In this paper, a method of small scale wind field display and wind motion simulation is introduced. First, using CFD (Computational Fluid Dynamics) algorithm to calculate the wind speed and wind direction data in the complex terrain. Then building terrain using DEM(Digital Elevation Model)data and osg(Open Scene Graph) graphics engines. Then, DEM data combine with wind speed and wind direction data, the wind attributes corresponding to each grid are calculated. Attributes include speed of wind, wind direction, grid unit wind direction vector, unit terrain normal and material pointer. Then build the wind node, the wind node changes the wind node size, color, position and angle according to the wind property corresponding to the grid. Each grid shows the wind node of the grid wind property, and wind nodes displayed on the whole terrain can represent the wind field. During the simulation of wind motion, the wind node moves at each time and reads the attributes of the grid under the next position, so as to realize the simulation of wind motion. The method is proved to be feasible to show small scale wind field and simulated wind motion.

关键词： CFD DEM osg wind field wind motion simulation

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Research of Large Terrain Multithreading Fast Scheduling Based on the osg

Research of Large Terrain Multithreading Fast Scheduling Bas...

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Asia Simulation Conference/International Conference on System Simulation and Scientific Computing (AsiaSim and ICSC 2012)

作者： Huang, Xiying Shao, Wei Zhao, Dinghai Acad Armored Force Engn Beijing 100072 Peoples R China

ISBN: (纸本)9783642343865

In the field of 3D terrain visualization, the contradiction between massive terrain data volume and the rendering efficiency is growing increasingly, and many scheduling arithmetic of large terrain have been put forward. In this paper, we build the improved four forks model according to characteristic of the large terrain data volume, discuss the storage mechanism and index structure, and then construct the multithreading scheduling mechanism. At last we achieve the large terrain rendering using osg.

关键词： multithreading four forks tree model large terrain osg

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Smoke Efficiency Simulation Based on osg and PARTICLE SYSTEM 4

Smoke Efficiency Simulation Based on OSG and PARTICLE SYSTEM

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4th International Conference on Intelligent Information Processing (ICIIP)

作者： Chen, ChaoQuan Yang, Yong Xie, XiaoLan Guilin Univ Technol Coll Informat Sci & Engn Guilin Guangxi Zhuang Peoples R China

ISBN: (纸本)9781450361910

Degree of smoke diffusion after a fire is often unpredictable, and the scale of smoke spread is so large that it is difficult to grasp the situation of the whole site. In this paper, the spreading range of smoke is predicted based on particle system and fluid mechanics method, and the spreading trend of smoke disaster is simulated by using the image of open source scene. In this paper, the smoke particle model was established by using the development tool of Visual Studio 2017 and the development environment of osg(Open Scene Graph) to conduct smoke simulation experiments and simulate the smoke and its spread in 3D Scene in real time. The experimental results show that the method can reproduce the smoke spreading in the 3D scene effectively, and the experiment is practical and practical. This provides a feasible and effective method for establishing the prediction of the spread of smoke after a real fire, and carries out effective simulation of the smoke to help fire personnel control the spread of smoke.

关键词： smoke spreading particle system osg

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Research on 3D Visualization Technology of Electromagnetic Field Based on osg 10

Research on 3D Visualization Technology of Electromagnetic F...

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10th International Symposium on Computational Intelligence and Design (ISCID)

作者： He Rongmao Xu Zhongfu Wang Lihua He Zhengqiu Luoyang Elect Equipment Test Ctr Luoyang 471003 Henan Peoples R China

ISBN: (纸本)9781538636756

Visualization technology has been widely used in many fields, but research in the field of electromagnetic is still in the exploratory stage. Based on the introduction of electromagnetic field visualization process, this paper studies the visualization method of electromagnetic scalar data and vector data, especially focuses on the analysis and optimization of the ray projection algorithm, which reduces the computational cost, improves the drawing speed and greatly improves the drawing of the electromagnetic vector data. Finally, the visualization of electromagnetic scalar and vector data is realized by using classic MC algorithm and optimized ray projection algorithm on open source 3D rendering engine osg. The experimental results show that this method can effectively improve the rendering of 3D electromagnetic field.

关键词： electromagnetic scalar field vector field visualization osg

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A Simulation Model of Glucose-Insulin Metabolism and Implementation on osg

A Simulation Model of Glucose-Insulin Metabolism and Impleme...

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Biological Ontologies and Knowledge Bases Workshop at IEEE International Conference on Bioinformatics and Biomedicine (IEEE BIBM)

作者： Rad, Milad Ghiasi Immaneni, Aditya McCabe, Megan Pierobon, Massimiliano Cui, Juan Univ Nebraska Dept Comp Sci & Engn Lincoln NE 68588 USA

ISBN: (纸本)9781509030507

In this paper, we present the design and implementation of a stand-alone tool for metabolic simulation and its deployment on the Open Science Grid (osg). The case study model of glucose-insulin metabolism aims at the development of a real-time monitoring system that can assist patients with diabetes to handle their blood glucose profile and maintain healthy diet habit. This system is able to integrate custom-built SBML models along with users' food intake information and produces the estimation of ATP, Glucose, and Insulin for the given duration using numerical analysis and simulation. The tool has also been generalized to take into consideration of temporal genomic information and be flexible for simulation of any given biochemical models. After implementation on osg, the results have demonstrated the effectiveness of numerical optimization for model selection and the feasibility of the proposed tool for the given metabolic simulation. The ATP-glucose and glucose-insulin correlations revealed by this tool can be promising for a variety of different application cases.

关键词： metabolic pathways enzymes chemical reactions metabolic network simulation osg

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基于osg的红外动态场景仿真

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红外与激光工程 2013年第S01期42卷 18-23页

作者：黄建峰范小礼王俊北京环境特性研究所北京100854 光学辐射重点实验室北京100854

采用基于开源三维渲染引擎Open Scene Graph(osg)平台,利用目标与背景的几何特征模型、红外辐射特征模型、大气辐射传输模型、探测器光电转换模型、探测器噪声模型等,实现了一个参数可调的红外场景仿真系统。它能根据战情及被试装备的... 详细信息

采用基于开源三维渲染引擎Open Scene Graph(osg)平台,利用目标与背景的几何特征模型、红外辐射特征模型、大气辐射传输模型、探测器光电转换模型、探测器噪声模型等,实现了一个参数可调的红外场景仿真系统。它能根据战情及被试装备的视角方向生成红外侦察告警注入式和辐射式仿真试验所需的红外场景图像。

关键词：红外场景仿真渲染引擎 osg

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基于osg的虚拟数控车削过程研究

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武汉理工大学学报 2010年第6期32卷 47-49,83页

作者：袁莎余震郑慧郭燕陈定方武汉理工大学智能制造与控制研究所武汉430063 安徽建筑工业学院机电学院合肥230601

采用Windows2000/XP为开发平台,***为开发工具,结合osg图形开发包进行开发的虚拟数控车削系统,可以使用户按照实际要求的加工参数在虚拟状态下随意改变加工条件和加工状态,通过虚拟数控车削系统对输入的数控指令进行解析,再现真实机械... 详细信息

采用Windows2000/XP为开发平台,***为开发工具,结合osg图形开发包进行开发的虚拟数控车削系统,可以使用户按照实际要求的加工参数在虚拟状态下随意改变加工条件和加工状态,通过虚拟数控车削系统对输入的数控指令进行解析,再现真实机械加工过程,方便在虚拟环境中开展数控加工方面的研究与应用实践。

关键词： osg 虚拟车削数控指令解析

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osg环境中可靠性增强的工作流自适应调度

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小型微型计算机系统 2013年第4期34卷 796-800页

作者：李玺胡志刚阎朝坤靳艳虹中南大学信息科学与工程学院长沙410083 中南大学软件学院长沙410075 河南大学计算机与信息工程学院河南开封475001

针对实际的网格环境—Open Science Grid(osg),提出了一个多阶段网格工作流调度机制,主要包括站点发现、站点初始评估以及站点动态评估和选择.通过基于时间序列的性能预测值评估各资源站点的初始性能,提出了一个基于网格资源站点自适应... 详细信息

针对实际的网格环境—Open Science Grid(osg),提出了一个多阶段网格工作流调度机制,主要包括站点发现、站点初始评估以及站点动态评估和选择.通过基于时间序列的性能预测值评估各资源站点的初始性能,提出了一个基于网格资源站点自适应评分机制的选择算法.为了提高工作流执行的可靠性并尽可能缩短执行时间,设计了一个增量式的任务副本策略,并采用各资源站点任务排队等待时间的经验累积分布函数图来优化任务副本的设置参数.在实际网格环境osg中,基于网格工作流系统Swift完成的大量实验结果表明,所提出的算法和策略能够有效减小工作流调度长度和作业拒绝率,同时在osg中能够成功完成的Swift工作流规模也明显增大.

关键词：网格 osg 工作流调度性能预测评分机制任务副本

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