Computer Networks (eBook)

Preface 5
Organization 6
Table of Contents 8
Molecular Networks and Information Systems 12
Introdution 12
Molecular Genetic Engineering 20
Compendium 20
References 21
Sorting of Quantum States with Respect to Amount of Entanglement Included 22
Introduction 22
Algorithms for Sorting Quantum States 23
Canonical Schmidt Decomposition of Quantum States 23
Linear and Partial Semi-order for Entanglement States 24
Example of Usage of Linear Sorting Algorithm 25
Computational Complexity Analysis 28
Conclusions and Further Work 29
References 29
Management of Web Services Based on the Bid Strategy Using the User Valuation Function 30
Introduction 30
User Valuation Function 31
Algorithms and Problem Formulation 32
First Case 32
Second Case 33
Results and Conclusions 35
References 36
A Markovian Model of a Call Center with Time Varying Arrival Rate and Skill Based Routing 37
Introduction 37
CTMC Model 38
Simulation Model 40
Tests, Results and Comparison 40
Conclusion 43
References 44
A Novel Multicast Routing Protocol for Mobile Sensor Networks with Topology Control 45
Introduction 45
Multicast Routing Protocol for Mobile Sensor Networks 46
Performance Analysis of MuPMS in Mobile Sensor Networks 50
Effectiveness Analysis of Multicast Group Formation in MSNs 50
Energy-Efficiency Analysis 53
Performance Measures of MuPMS 55
Experimental Results 55
Conclusion 58
References 59
On the Lifetime Maximization Design of Mobile Ad Hoc and Sensor Networks 61
Introduction 61
The Radio Link Availability Estimation in the Mobile Ad Hoc and Sensor Networks 63
The Design of Mobile Wireless Ad Hoc and Sensor Networks 65
Simulation Results 66
Conclusion 71
References 71
Modeling of the Throughput Capacity of Hierarchical Mobile Ad Hoc and Sensor Networks 73
Introduction 73
The Throughput Capacity of Ad Hoc and Sensor Networks in General 75
The Throughput Capacity of Immobile Hierarchical Ad Hoc and Sensor Networks 76
The Throughput Capacity of the Hierarchical Mobile Ad Hoc and the Sensor Networks 77
Numerical Experiments of the Mobile Hierarchical Ad Hoc and Sensor Networks 79
Conclusion 81
References 81
Object Oriented Vertical Communication in Distributed Industrial Systems 83
Vertical Communication in Distributed Industrial Systems 83
Tag Oriented Approach 84
Object Oriented Approach in OPC UA 86
Conclusions 89
References 89
Combining Timed Colored Petri Nets and Real TCP Implementation to Reliably Simulate Distributed Applications 90
Introduction 90
Simulation Model 91
Enabling Reliable Simulation 92
The TCP Problem 92
Related Work 93
Estimation of TCP Transmission Time 94
Results of Experiments and Simulations 95
Conclusions 96
Summary and Future Work 96
References 96
Adaptive Streaming of Stereographic Video 98
Introduction 98
A Tool for Stereo Video Streaming 99
Coding/Decoding System 99
Transmission of the Frames 101
Generation and Regulation of the Traffic 102
Measurement Results 103
Summary and Future Work 105
References 105
The Influence of Electromagnetic Disturbances on Data Transmission in USB Standard 106
Introduction 106
USB Standard 107
Test Bench and Research Procedure 108
Test Bench 109
The Research Procedure 110
The Influence of Electromagnetic Disturbances on Data Transmission in USB Standard 110
Conclusions 113
References 113
Electromagnetic Emission Measurement of Microprocessor Units 114
Introduction 114
Electromagnetic Interference 115
Test Bench and Research Procedure 116
The Test Results 117
Conclusions 120
References 121
Software Influence Upon AX.25 Protocol Performance 122
Introduction and Related Work 122
Experimental Tests and Results 123
Results for “Slower” Configuration 124
Results for “Faster” Configuration 126
Real Window Size 128
Conclusions 129
References 129
Buffer Capacity Adjustment for TNC Controller 130
Introduction 130
TNC Controllers and AX.25 Protocol 130
TNC Controller Structure 131
TNC Controller Functions 131
Parameters of AX.25 Protocol 132
Buffer Capacity Adjustment 132
Estimation of Effective Throughput 134
Estimation of Buffer Capacity 134
Calculation Results 135
Conclusions 136
References 137
The Reliability of Any-Hop Star Networks with Respect to Failures of Communication Nodes 138
Introduction 138
Reliability Analysis 139
Numerical Results 140
Conclusion 144
References 145
A Floor Description Language as a Tool in the Process of Wireless Network Design 146
Introduction 146
Wireless Network Design Process 146
Propagation Models 147
Floor Description Language 149
FDL Specification 149
Modelling Procedures Parameters 150
Numerical Results 150
Results Conclusions 152
Summary 152
References 153
Dependencies and Configurations of Solutions in Multicriteria Optimization in Nets 154
Introduction 154
Aggregation of Criterions of the Minimal Path in Reference to Different Target Points 155
The Aggregation of Criteria of Maximum Flow and Minimum Spanning Tree 156
Aggregation of Criterions of the Cardinality Matching and the Shortest Path 158
Aggregation of Criteria of the Cheapest Flow and Scheduling Optimization 159
Conclusions 160
References 160
Web Traffic Modeling for E-Commerce Web Server System 162
Introduction 162
Session-Based Workload Model 163
E-Commerce Web System Model 165
Simulation Tool 167
Simulation Results 168
Concluding Remarks 169
References 169
RULEGO Bioinformatical Internet Service – System Architecture 171
Introduction 171
Decision Rules 172
System Architecture 173
Software Requirements 175
User Interface 175
Example of Analysis 176
Conclusions and Future Work 177
References 178
On the Performance of AQM Algorithms with Small Buffers 179
Introduction 179
AQM Overview 180
Performance Evaluation 181
Simulation Scenarios and Topology 181
Results Analysis 182
Conclusions 183
References 184
Adaptive RED in AQM 185
Introduction 185
Active Queue Management 185
Adaptive RED 187
Analytical and Simulation Models of RED and ARED 188
Description of the Research 190
Conclusions 192
References 193
QoS Aware MPLS Multicast in the MAN DiffServ Domain 195
Introduction 195
Traffic Engineering 196
The Use of MPLS-TE in MPLS Domain 196
Multicast Transmissions in the MPLS Domain 197
Using RSVP-TE in MPLS Technology 197
MPLS Labeling in the DiffServ Domain 198
Straightforward Realization of QoS Guarantees in DiffServ-MPLS Domain 200
Conclusions 201
References 202
ServeR: .NET-Based Infrastructure for Remote Services of Statistical Computing with R-Project 195
Introduction 203
Known Approaches 204
ServeR Architecture 204
Client Application and Communication Server 205
Communication Server and Calculation One 208
On-Line Mode – Remote R Session 208
Conclusions 209
References 209
Modelling of Multi-tier Internet Applications with the Use of BCMP Queueing Networks and Simulation Model in Simulink 211
Introduction 211
Related Works 212
Analitycal Model 213
Handling Requests in a 3-Tier Application 213
Model’s Description 214
Determining Parametres of Model 215
Simulation Model 216
Simulation Experiment 218
Conclusion and Future Work 219
References 219
Disaster’s Impact on Internet Performance – Case Study 221
Introduction 221
Internet Performance Measures 222
Throughput 222
Delay and Jitter 222
Packet Loss Rate 223
Internet Monitoring Tools and Services 223
Disaster Analysis 224
Introduction 224
Recent Accidents 224
January 2008 Mediterranean Accident 224
Conclusions 227
References 228
Creating 3D Web-Based Viewing Services for DICOM Images 229
Introduction 229
DICOM Images 230
Creating a Projection of 3D Image 230
Interpolation 232
Server-Side Creating and Processing an Image 232
PerformanceTests 232
The Results of Tests 233
Summary 233
References 234
Efficiency Analysis of the Server-Side Numerical Computations 236
Introduction 236
Dynamic Web Platforms 237
Testing Environment and Methodology 238
Software Environment 238
Hardware Environment 238
Synthetic Tests for Math Operations 238
Implementation and Test Methodology 239
Test Categories 239
Experimental Results 240
Summary 241
Conclusions 242
References 243
Adaptive Approach to Network Security 244
Introduction 244
Model of Adaptable Security 245
Security Level $(F_S)$ 247
SPOT: Security Protocol Optimization Tool 247
The Version of the TLS Protocol – Adaptable Model 247
Version 1 248
Version 2 249
Version 3 249
Case Study 250
Conclusion 251
References 251
PROFINET I/O Network Analyzer 253
Introduction 253
PROFINET I/O Low Level Communication Network 254
The PROFINET I/O Analyzer Idea 258
Conclusions 262
References 262
Dual Bus as a Method for Data Interchange Transaction Acceleration in Distributed Real Time Systems 263
Introdution 263
Use of Doubled Communication Bus to Dynamically Shorten the Network Cycle Duration 267
Basic Time Relation Model Present in the Proposed Network Configuration 269
Summary 273
References 274
Hierarchical Petri Net for the CPDev Virtual Machine with Communications 275
Introduction 275
Hierarchical Model of the Virtual Machine 276
Communications between PC and SMC 278
Communications between SMC and Slave Devices 279
Implementation 281
Conclusions 281
References 282
IEEE 802.11 Medium Access Mechanisms in Industrial Applications 283
Introduction 283
Medium Access Methods Analysis 284
Distributed Coordination Function 284
Point Coordination Function 286
Quality of Service Extension 287
Summary 288
References 289
The General Concept of a Distributed Computer System Designed for Monitoring Rock Movements 291
Introduction 291
Local System Architecture 292
Distribution of Functions 292
The Communication Channel 294
Measurements 298
Power Supply 300
Conclusions 301
References 302
Remote Monitoring of Geological Activity of Inclined Regions – The Concept 303
Introduction 303
Local System 304
LMN – Local Measurement Node 305
LPCN – Local Processing and Control Node 306
Remote Communication 307
Main Unit 308
Processing Support 309
Data Compression 310
Conclusions 312
References 312
The IEEE Wireless Standards as an Infrastructure of Smart Home Network 313
Introduction 313
The Smart Home Network Requirements 314
The Networks Selection 315
High Throughput Network 315
Low Throughput Network 316
Analyses of the PHY Layers 317
Transmission Range and Data Rates 317
Interferences 319
Energy Consumption 319
Conclusions 320
References 320
The Graphic Representation of Areas of Rough Sets Characterizing the Groups of Scheduled Tasks 321
Introduction 321
The Conception of Structuralization of Rough Sets in Reference to Tasks 322
The Integration of Results from Different Algorithms in Reference to of Rough Sets Structuralization 324
The Algorithms of Categorization of Data and Results Characterizing the Scheduled Tasks (General Presentation) 326
Conclusions 327
References 328
The Problem of Bandwidth Allocation in the Business Activity of Service Providers: Comparison and Analysis of Costs 329
Introduction 329
Costs of Selected Solutions’ Implementation 330
Installation and Configuration 331
Performance Levels 332
Additional Capabilities and Statistics 333
Summary 334
References 335
Network Transmission of 3D Mesh Data Using Progressive Representation 336
Introduction 336
Mesh Representation 337
Manifold Surfaces 338
Progressive Mesh 338
Strategy of Network Transmission 339
Me3d Framework 340
Architecture of Me3d Framework 342
Tests and Results 342
References 344
Application of Distributed System in Control and Diagnostic Toothed Gears 345
Introduction 345
Test Stand 347
Data Exchange Model for MODBUS/TCP Protocol and SRTP Protocol 350
Experimental Test 352
Summary 352
References 353
Improving Availability of Industrial Monitoring Systems through Direct Database Access 355
Introduction 355
Industrial Monitoring System Components 356
Data Source 356
Data Store 356
Communication Infrastructure 357
The Gateway 357
Direct Database Access in Monitoring Systems 358
Performance Considerations 359
Alternatives 360
Conclusions 361
References 361
Author Index 363