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2012 UKSim 14th International Conference on Computer Modelling and Simulation最新文献

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Modeling Pushbroom Scanning Systems 推扫扫描系统建模
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.62
S. Koduri
{"title":"Modeling Pushbroom Scanning Systems","authors":"S. Koduri","doi":"10.1109/UKSim.2012.62","DOIUrl":"https://doi.org/10.1109/UKSim.2012.62","url":null,"abstract":"The present study aims at modeling push broom imaging systems on board a spacecraft with a full force rigorous orbital photogrammetric mode as a digital solution. During the modeling stage, we adopt a hybrid time domain model wherein keplerian orbital parameters are modeled in continuous time domain, while attitude parameters are, modeled as polynomials in discreet time domain. The output of the model is subsequently used to realize an ortho-rectified image by single stage resampling. The image rectification procedure adopted is based on back projection by indirect method but is redesigned to eliminate several unnecessary computations that are made on a pixel by pixel basis and is illustrated with a Spot data set. The study illustrates the excellent and very promising potential of adopting Singular Value Decomposition SVD in the bundled adjustment process. The study brings out that this two stage approach results in a significant reduction in computational time while retaining the product location accuracy. Geometric rectification is made by a single stage resampling, which significantly enhances the radiometric fidelity of the processed data when compared with conventional techniques used in operational environments.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122665676","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
Active Stereo Vision for Mobile Robot Localization and Mapping Path Planning 主动立体视觉在移动机器人定位与路径规划中的应用
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.117
K. Mutib, M. Alsulaiman, R. Hedjar, M. Emaduddin, E. Mattar
{"title":"Active Stereo Vision for Mobile Robot Localization and Mapping Path Planning","authors":"K. Mutib, M. Alsulaiman, R. Hedjar, M. Emaduddin, E. Mattar","doi":"10.1109/UKSim.2012.117","DOIUrl":"https://doi.org/10.1109/UKSim.2012.117","url":null,"abstract":"This manuscript looks into details into the hardware implementations of an active stereo vision path planning navigation for a mobile robotics system. This mobile robotics system has been designated as the (KSU-IMR), as it a test-bed for research within the area of mobile robotics system navigation through the use of an active stereo vision for planning a path within an unstructured environment at King Saud University in KSA. The system is making use of fast image processing tools, as in addition to fast algorithms for processing the dynamic images. The approach followed here is to employ the Epipolar Geometry to compute the 3-D details of the environment where the mobile is moving. The algorithm mixes stereo vision, occupancy grid mapping, and potential field path planning procedures to form a robust and consistent robotic system for mapping and navigation.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124233923","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: 4
Virtual Network Simulator Architecture 虚拟网络模拟器体系结构
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.96
Isil Burcu Barla Harter, D. Schupke, G. Carle
{"title":"Virtual Network Simulator Architecture","authors":"Isil Burcu Barla Harter, D. Schupke, G. Carle","doi":"10.1109/UKSim.2012.96","DOIUrl":"https://doi.org/10.1109/UKSim.2012.96","url":null,"abstract":"Network virtualization is seen as a promising concept for the future Internet. It offers high efficiency and flexibility, and is a good candidate to address the ossification of the Internet. It is also a key enabler for resilient and low latency cloud services. Network virtualization is also expected to give rise to new business roles. Therefore, these business roles, their responsibilities and their interactions should be deeply analysed. Understanding the effects of design decisions and parameter settings in a virtual network ecosystem can be achieved by modelling and simulation. In this paper, we introduce a new simulation environment, in which a network virtualization ecosystem with its all players and the infrastructures they possess can be modelled, and the performance of new designs for efficient and resilient virtual networks and cloud connections can be assessed.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"1631 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115832025","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: 3
Modeling and Adaptive Control Simulation for a Distillation Column 精馏塔建模与自适应控制仿真
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.17
V. T. Minh, J. Pumwa
{"title":"Modeling and Adaptive Control Simulation for a Distillation Column","authors":"V. T. Minh, J. Pumwa","doi":"10.1109/UKSim.2012.17","DOIUrl":"https://doi.org/10.1109/UKSim.2012.17","url":null,"abstract":"This paper presents mathematical modeling and adaptive control simulation for a distillation column based on the energy balance configuration. In this distillation modeling, the reflux rate L and the boil up rate V are used as the inputs to control the purity of the distillate overhead and the impurity of the bottom products. The mathematical modeling and simulation is accomplished over three stages: Nonlinear system, Linearization, and Reduced order system. The adaptive control is used with linear model reference controller (LMRC). Results from the simulation are helpful for initial steps of a petroleum project feasibility study and design.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131445233","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: 11
On Untangled Meshes via Fruchterman Reingold Force Directed Graph Embedding 基于Fruchterman Reingold力有向图嵌入的解缠网格
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.15
Nitin
{"title":"On Untangled Meshes via Fruchterman Reingold Force Directed Graph Embedding","authors":"Nitin","doi":"10.1109/UKSim.2012.15","DOIUrl":"https://doi.org/10.1109/UKSim.2012.15","url":null,"abstract":"In this paper, we study how to modify a physical, force-directed method based upon the Fruchterman-Reingold (FR) graph layout algorithm so that it can be used for untangling. Specifically, we have chosen Lake_20 Mesh, Lake_35 Mesh and Tri_20258 Mesh for our research work. All these meshes consist of small triangles. The objectives of aesthetic graph layout, such as minimization of edge intersections and near equalization of edge lengths, follow the goals of mesh untangling and generating good quality elements, respectively. We have successfully applied our method to untangle various shapes of triangles i.e. Lake_20, Lake_35 and Tri_20258 finite element meshes.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130796781","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
A Quantitative Evaluation Method of Landmark Effectiveness for Pedestrian Navigation 行人导航地标有效性定量评价方法
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.45
H. Furukawa, Hiroto Uto
{"title":"A Quantitative Evaluation Method of Landmark Effectiveness for Pedestrian Navigation","authors":"H. Furukawa, Hiroto Uto","doi":"10.1109/UKSim.2012.45","DOIUrl":"https://doi.org/10.1109/UKSim.2012.45","url":null,"abstract":"In recent years, most of mobile phones have a function of pedestrian navigation guidance. Even though performance of the function has been improved with Global Positioning System (GPS) and high information and communication technologies, it was reported that users sometimes feel anxiety because of low accuracy of the position estimation especially in urban area and delay of information updating. The purpose of our work is to propose pedestrian navigation method to reduce anxiety of users. We propose evaluation functions to estimate various landmarks' effectiveness based on the \"recognizability\", and \"visibility\", and a route planning algorism for safe and easy way finding. The estimation model was constructed through several cognitive experiments about recognizability and visibility for different types of landmarks.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"10 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114025178","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: 3
Simulation of DPCM and ADM Systems DPCM和ADM系统仿真
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.64
Christopher Mansour, Roger Achkar, Gaby Abou Haidar
{"title":"Simulation of DPCM and ADM Systems","authors":"Christopher Mansour, Roger Achkar, Gaby Abou Haidar","doi":"10.1109/UKSim.2012.64","DOIUrl":"https://doi.org/10.1109/UKSim.2012.64","url":null,"abstract":"Through years, Digital Communication systems, Pulse Coded Modulation (PCM), Linear Delta Modulation (LDM), Differential Pulse Coded Modulation (DPCM), and Adaptive Delta Modulation (ADM), have proven their unlimited advantages over analog communication systems, in term of error minimization, and distances of transmission enhancement. However two of these systems, the Pulse Coded Modulation and Linear Delta Modulation, still have some weaknesses limiting their advantages, these limitations negatively affect the communication process causing quantization error, slope overload distortion and granular noise. On the other hand, communication engineers have developed two additional digital communication systems which are the Adaptive Delta Modulation (ADM) and the Differential Pulse Coded Modulation (DPCM) in order to solve the aforementioned problems. This paper discusses the implementation and simulation of the aforementioned digital communication systems using Simulink (The Math Works, Inc., Natick, MA, USA) showing the effect of different types of noise when applied to the channel, thus, proving the importance of DPCM and ADM systems in eliminating such effects and ensuring a successful transfer of data.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114328305","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: 6
Analysis and Comparison of Multi-level Inverters Based on Two-Level Space Vector PWM 基于两电平空间矢量PWM的多电平逆变器的分析与比较
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.70
Masoud Soleimanipour, Hamed Sadeghi Goughari, N. Sargolzaei
{"title":"Analysis and Comparison of Multi-level Inverters Based on Two-Level Space Vector PWM","authors":"Masoud Soleimanipour, Hamed Sadeghi Goughari, N. Sargolzaei","doi":"10.1109/UKSim.2012.70","DOIUrl":"https://doi.org/10.1109/UKSim.2012.70","url":null,"abstract":"Multilevel inverters are increasingly being used in high-power medium voltage applications due to their superior performance compared to two-level inverters. Among various modulation techniques for a multi-level inverter, the space vector pulse width modulation (SVPWM) is widely used. The complexity is due to the difficulty in determining the location of the reference vector, the calculation of on times, and the determination and selection of switching states.This paper proposes a general SVPWM algorithm for Multi-level inverters based on standard two-level SVPWM . To control multilevel converters, the pulse width modulation (PWM) strategies are the most effective, especially the space vector pulse width modulation (SVPWM) one, which has equally divided zero voltage vectors describing a lower total harmonic distortion (THD). In this work, a three and four-level inverter using space vector modulation strategy has been modeled and simulated with a passive R-L load. Simulation results are presented for various operation conditions to verify the system model.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"2019 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122046276","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: 3
Security Analysis and Implementation of 3-Level Security System Using Image Based Authentication 基于图像认证的三级安全系统的安全性分析与实现
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.83
S. Anand, P. Jain, Nitin, Ravi Rastogi
{"title":"Security Analysis and Implementation of 3-Level Security System Using Image Based Authentication","authors":"S. Anand, P. Jain, Nitin, Ravi Rastogi","doi":"10.1109/UKSim.2012.83","DOIUrl":"https://doi.org/10.1109/UKSim.2012.83","url":null,"abstract":"Increasing security has always been an issue since Internet and Web Development came into existence, text based passwords is not enough to counter such problems, which is also an anachronistic approach now. Therefore, this demands the need for something more secure along with being more user-friendly. Therefore, we have tried to increase the security by involving a 3-level security approach, involving text based password at Level 1, Image Based Authentication at Level 2, and automated generated one-time password (received through an automated email to the authentic user) at Level 3. And an assiduous effort has been done for thwarting Shoulder attack, Tempest attack, and Brute-force attack at client side, through the use of unique image set in the IBA System.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116964849","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: 10
Design and Performance Analysis of Ultra Fast CNFET Comparator and CMOS Implementation Comparison 超高速CNFET比较器与CMOS实现比较的设计与性能分析
2012 UKSim 14th International Conference on Computer Modelling and Simulation Pub Date : 2012-03-28 DOI: 10.1109/UKSim.2012.102
S. Bari, Nur-e-elahi Shonchoy, Farah Tasnuba Kabir, A. Khan
{"title":"Design and Performance Analysis of Ultra Fast CNFET Comparator and CMOS Implementation Comparison","authors":"S. Bari, Nur-e-elahi Shonchoy, Farah Tasnuba Kabir, A. Khan","doi":"10.1109/UKSim.2012.102","DOIUrl":"https://doi.org/10.1109/UKSim.2012.102","url":null,"abstract":"This paper presents an ultra fast comparator using Carbon Nanotube Field Effect Transistor (CNFET) and the simulation results of prime performance parameters of this proposed CNFET comparator. As CNFET devices are widely considered much faster than their CMOS counterparts, the CNFET comparator should show much improved performance than the CMOS one. Therefore the key performances of the comparator like rising and falling delay, gain, average power dissipation and other transient responses of the proposed CNFET comparator are analyzed from simulation results and are compared with the simulation results of the CMOS comparator in the same condition. Both the comparators are simulated in HSpice platform by using 0.5μm CMOS process model for CMOS comparator and HSpice model of CNFET devices for CNFET comparator.","PeriodicalId":405479,"journal":{"name":"2012 UKSim 14th International Conference on Computer Modelling and Simulation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115449929","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: 5
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