2552 Slices
Medium 9781601322449

Elastic Integration of a Dedicated Grid Site with an Opportunistic Cloud Infrastructure

Hamid R. Arabnia, George A. Gravvanis, and Ashu M. G. Solo CSREA Press PDF

Int'l Conf. Grid & Cloud Computing and Applications | GCA'13 |17Elastic Integration of a Dedicated Grid Site with an Opportunistic CloudInfrastructureHarold Castro, Nathalia Garcés, Mario VillamizarDepartment of Systems and Computing EngineeringUniversidad de los AndesBogotá, Colombia{hcastro, n.garces26, mj.villamizar24}@uniandes.edu.coAbstract— this work aims to extend and integrate a dedicated grid infrastructure based on the middleware gLite with opportunistic IaaS resources provided by the UnaCloud project. The extension takes place during the periods of time when the current demand exceeds the base resources capacity.The integration is done elastically, allowing the grid site to dynamically change the processing capabilities according to the current workload, using opportunistic resources when needed. To manage the elastic integration different implementation strategies are proposed and different testing scenarios are analyzed to validate a good reactiveness to workload spikes.Keywords- Elastic Integration; Opportunistic Cloud;

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Medium 9781601322500

Dynamic Cost with Multi-Criteria Decision Method (MCDM) for Load Balancing in Heterogeneous Mobile Networks

Hamid R. Arabnia, Victor A. Clincy, Leonidas Deligiannidis, George Jandieri, Ashu M. G. Solo, and Fernando G. Tinetti CSREA Press PDF

Int'l Conf. Wireless Networks | ICWN'13 |

155

Dynamic Cost with Multi-Criteria Decision Method

(MCDM) for Load Balancing in Heterogeneous Mobile

Networks

Bassem El Zant and Maurice Gagnaire

Institut Mines-Telecom -Telecom ParisTech– LTCI – UMR 5141CNRS

Networks and Computer Sciences Department

23, avenue d’Italie, 75013 Paris, FRANCE

Abstract—Wireless networks are designed to operate independently without any cooperation. With the many existing inconveniences of 3G networks, operators are persuaded to switch to heterogeneous access networks. This reduces the costs that operators should pay in order to move to 4G and thus make use of the existing networks infrastructures, to come up with heterogeneous environment where multiple wireless technologies coexist. This paper shows how networks users will be able to select their networks through a user-friendly interface where criteria such as the offered throughput and cost are listed. Networks operators should make continuous modifications to the networks listed criteria such as the offered throughput and cost in order to maintain all the available networks working properly. We simulate the intervention using a dynamic cost that the operators can perform on the networks; whereby, the performance parameters, and the operators’ profits are taken into consideration along with the users’ satisfaction.

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Medium 9781601322364

FPGA-based Hexapod Robot Spider

Hamid R. Arabnia, Leonidas Deligiannidis, Ashu M. G. Solo, Fernando G. Tinetti CSREA Press PDF

Int'l Conf. Computer Design | CDES'13 |

67

FPGA-based Hexapod Robot Spider

Yuhua Li

Huimin Ma

Dept. of Computer Science and Technology

Xi’an Jiaotong University, City College

Xi’an, China yhli@mail.xjtu.edu.cn

Abstract—This paper describes a FPGA-based hexapod robot spider, which is used for student education purposes. In the paper mechanical design, kinematic analysis, electro-mechanical device and FPGA system are introduced. Some key points about gait mode, non-stop PWM signal,

,filter of reflex ultrasonic wave and Bluetooth control are given in detail. At the end of the paper a discussion section gives some technical opinions about FPGAbased system, gait mode, filter of sonar echo and remote control.

Index Terms—FPGA, robot spider, mini-sever, PWM ,

Bluetooth Control

I. INTRODUCTION

Robot spiders are widely built and researched for a variety of purposes, including space exploration, mine cleaning in battle fields and rescue work in disasters. Robot spiders can be used in such application situations because of their special legwalking mode. Compared with wheel mode robot, the efficiency of robot spider is not higher, but a robot spider can easily cross over obstacles.

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Medium 9781601323170

The Value of Video Quizzes in a Computer Science Flipped Classroom: An Empirical Study

Hamid R. Arabnia Azita Bahrami, Leonidas Deligiannidis, George Jandieri, Ashu M. G. Solo, and Fernando G. Tinetti CSREA Press PDF

94

Int'l Conf. Frontiers in Education: CS and CE | FECS'14 |

The Value of Video Quizzes in a Computer

Science Flipped Classroom: An Empirical Study

Lisa L. Lacher

Mark C. Lewis

Department of Computer Science

University of Houston – Clear Lake

Houston, Texas, USA llacher@uhcl.edu

Department of Computer Science

Trinity University

San Antonio, Texas, USA mlewis@trinity.edu

Abstract—Flipping the classroom has become much more common in the last several years, but in the field of Computer

Science it is still a much rarer means of delivery than the traditional classroom setting. One big concern is whether or not students will spend the preparation time necessary outside of the classroom in order to come prepared to class ready to engage in the active learning activities prepared by the instructor and thus maximize their learning potential. The study concerns four class sections in a Principles of Computer Science I course. Each student was required to watch video lectures prior to class. Some students were also required to take pre-class video quizzes which provided those students with immediate feedback on the level of their preparedness. Statistical analyses did not support the hypothesis that the pre-class video quizzes were effective in helping the students earn better grades. Student perceptions of the usefulness of video quizzes and anecdotal evidence from instructor experience are also presented.

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Medium 9781601323231

Session - Modeling, Spatial and Semantic Data Models + Applications

Hamid R. Arabnia, Leonidas Deligiannidis, Ray Hashemi, George Jandieri, Ashu M. G. Solo, and Fernando G. Tinetti CSREA Press PDF

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