راهنمای محاسبات موبایل

The debut of small, inexpensive, yet powerful portable computers has coincided with the exponential growth of the Internet, making it possible to access computing resources and information at nearly any location at almost any time. This new trend, mobile computing, is poised to become the main technology driver for a decade to come. There are many challenges that make mobile computing a hot research and development area. Researchers, engineers, and practitioners need a comprehensive resource and reference to aid them in their quest to make the potential of this technology a reality. The Mobile Computing Handbook explores the benefits and challenges of the field, and includes the latest insight into the major topics of this emerging discipline. It provides, in 40 chapters written by industry experts, technical information about all aspects of mobile computing, from basic concepts to research-level material, with learned analysis of future directions. This handbook captures the present state of the field and serves as an invaluable source of reference material. Following an introduction and an overview of mobile applications, the book explores location management, location-based services, caching strategies, power management, performance and modeling, security and privacy, and many other subjects

Metro Service Providers are increasingly turning to Multi-Protocol Label Switching (MPLS) to converge disparate networks and services into a unified core, maintain quality, and deliver additional value-added capabilities. MPLS for Metropolitan Area Networks addresses service providers' challenges by demonstrating solutions provided by MPLS features such as traffic engineering (TE), fast reroute, VPNs, virtual private LAN services (VPLS), and QoS.

The text opens with an overview of metro networks and MPLS, describing business opportunities and challenges and how mission-critical applications can be deployed within Metropolitan Area Networks (MANs). It then examines traffic engineering issues, focusing on fundamental TE concepts, network control, trunk attributes, constraint-based routing (CBR), Resource Reservation Protocol with TE extensions (RSVP-TE), and resource optimization.

Following a discussion on how MPLS can bring increased reliability to MANs, the author then concludes the book with a detailed analysis of the service aspect of MANs. Topics reviewed include L3 and L2 MPLS VPNs, geographically dispersed Ethernet multipoint services, virtual private LAN services (VPLS), and the integrated services (IntServ) and differentiated services (DiffServ) QoS models with respect to MPLS.

The entire book adopts a simplify-and-exemplify approach, containing a series of real-life case studies and using representative topologies as a basis for illustrating the concepts discussed in each chapter. This learning-by-example approach helps you to remember and understand the complex MPLS concepts and technologies. You can then apply what you have learned from these examples and scenarios to your specific networking environments.

Annotation Intellectual property owners who exploit new ways of reproducing, distributing, and marketing their creations digitally must also protect them from piracy. Multimedia Security Handbook addresses multiple issues related to the protection of digital media, including audio, image, and video content. This volume examines leading-edge multimedia security concepts including protection architectures, encryption, watermarking, fingerprinting, authentication, and various applications. Comprinsing 26 chapters, the Handbook begins by introducing security fundamentals and discussing the vulnerabilities of individual protection schemes. Part II focuses on multimedia encryption, detailing audio, image, and video encryption techniques. Part III examines watermarking techniques, reviewing current and future trends and discussing multidimensional, fragile, and robust watermarks. Part IV covers multimedia data hiding, fingerprinting, and authentication. The text concludes with chapters describing applications of multimedia protection schemes, presenting topics such as application taxonomy, digital rights management, and techniques for adult image filtering. The Handbook offers comprehensive reference material on advanced topics in the field. It delivers invaluable insight for researchers, practitioners, and engineers involved in designing and developing systems that protect digital multimedia content Traditional manufacturing systems rely upon centralized, hierarchical systems that are not responsive enough to the increasing demand for mass customization. Decentralized, or heterarchical, management systems using autonomous agents promise to nullify the limitations of previous solutions. Agent-Based Manufacturing and Control Systems: New Agile Manufacturing Solutions for Achieving Peak Performance offers a survey of both the literature and the practical applications of this technology. Using a realistic example of a fictitious firm throughout, the book indicates when agent-based systems are appropriate, enumerates techniques to decompose a problem into entities that can be modeled as agents, provides a step-by-step guide to implementation, and offers hints for using simulation to design the system. The authors pay particular attention to object-oriented techniques and to the selection of appropriate tools and inter-agent communication standards, with specific reference to JADE middleware and FIPA framework. Practical, applicative, and thoroughly modern, this text provides all the tools necessary for implementing an extremely flexible, robust, adaptive, and fault-tolerant manufacturing system. This is the perfect reference for AI researchers, industrial manufacturing engineers, operations researchers, and plant managers who wish to develop the most efficient manufacturing systems available.

A comprehensive security patch management process is one of the fundamental security requirements for any IT-dependent organization. Fully defining this process ensures that patches are deployed in an organized, staged manner, resulting in little or no slowdowns or downtime to network infrastructure. Until now, there were no technical books for companies to use as a starting point for deploying the process. Curing the Patch Management Headache responds to this demand by tying together all aspects of the subject into one easy-to-understand format that is applicable regardless of the operating system, network device, or patch deployment tool.

This volume provides CISOs, CIROs, and IT directors and managers with the support and guidance that they need to integrate an effective patch management process into their environments. It emphasizes the importance of patch management and explains why having organizational support for the process drives successful implementation. The book details how patches should be implemented on devices and systems within an infrastructure, and how to distribute them in a timely manner.

many Excellent Hardware And Software Products Exist To Protect Our Data Communications Sytems, But Security Threats Dictate That They Must Be Further Enhanced. Many Laws Implemented During The Past 15 Years Have Provided Law Enforcement With More Teeth To Take A Bite Out Of Cyber Crime, But There Is Still A Need For Individuals Who Know How To Investigate Computer Network Security Incidents. Organizations Demand Experts With Both Investigative Talents And A Technical Knowledge Of How Cyberspace Really Works. Cyber Crime Investigator's Field Guide, Second Edition Provides The Investigative Framework That Needs To Be Followed, Along With Information About How Cyberspace Works And The Tools That Reveal The Who, What, When, Where, Why, And How In The Investigation Of Cyber Crime.

this Volume Offers A Valuable Q&a By Subject Area, An Extensive Overview Of Recommended Reference Materials, And A Detailed Case Study. Appendices Highlight Attack Signatures, Unix/linux Commands, Cisco Pix Commands, Port Numbers Targeted By Trojan Horses, And More.

Many excellent hardware and software products exist to protect our data communications sytems, but security threats dictate that they must be further enhanced. Many laws implemented during the past 15 years have provided law enforcement with more teeth to take a bite out of cyber crime, but there is still a need for individuals who know how to investigate computer network security incidents. Organizations demand experts with both investigative talents and a technical knowledge of how cyberspace really works. Cyber Crime Investigator's Field Guide, Second Edition provides the investigative framework that needs to be followed, along with information about how cyberspace works and the tools that reveal the who, what, when, where, why, and how in the investigation of cyber crime. This volume offers a valuable Q&A by subject area, an extensive overview of recommended reference materials, and a detailed case study. Appendices highlight attack signatures, UNIX/Linux commands, Cisco PIX commands, port numbers targeted by trojan horses, and more. "This book offers a survey of both the literature and the practical applications of this technology. Using a realistic example of a fictitious firm throughout, the book indicates when agent-based systems are appropriate, enumerates techniques to decompose a problem into entities that can be modeled as agents, provides a step-by-step guide to implementation, and offers hints for using simulation to design the system. The authors pay particular attention to object-oriented techniques and to the selection of appropriate tools and inter-agent communication standards, with specific reference to JADE middleware and FIPA framework." "Practical, applicative, and state-of-the-art, this text provides all the tools necessary for implementing an extremely flexible, robust, adaptive, and fault-tolerant manufacturing system. This is the perfect reference for AI researchers, industrial manufacturing engineers, operations researchers, and plant managers who wish to develop the most efficient manufacturing systems available."--Jacket The movement toward miniaturized and mobile computing has created more opportunity for cyber thieves. To respond effectively, IT security professionals need a resource that combines the understanding of investigative techniques with the technical knowledge of cyberspace. This second edition provides an investigative framework, demonstrates the knowledge of how cyberspace really works, and explains the tools needed to pursue cyber criminals. This volume provides the details of investigating computer crime from soup to nuts. It covers the entire investigative process, from what to do upon arrival at the scene through the completion of the investigation, including exploration of the chain of evidence When properly designed and implemented, agent based systems result in performance that is flexible, robust, adaptive, and fully tolerant - key factors for manufacturing success in the increasingly global marketplace. This book details the advantages of using an agent-based system, designing and implementing the system, selecting the most appropriate coding language, solving common coding problems, and creating a simulation model to test system efficiency. Designed as a how-to guide for agent-based manufacturing, the book focuses particularly on manufacturing planning, scheduling, and control; it differs from other books with its practical and applicative slant. (Midwest) MPLS for Metropolitan Area Networks demonstrates solutions provided by MPLS features. The text opens with an overview of metro networks and MPLS. It examines traffic engineering issues, focusing on fundamental TE concepts and network control. The author then discusses how MPLS can bring increased reliability to Metropolitan Area Networks (MANs), and concludes with a detailed analysis of the service aspects of MANs. Topics reviewed include L3 and L2 MPLS VPNs, geographically dispersed Ethernet multipoint services, virtual private LAN services (VPLS), and the integrated services (IntServ) and differentiated services (DiffServ) QoS models with respect to MPLS. With the Internet experiencing exponential growth and small and powerful personal computers being produced, it is now possible to access information or use computer resources anywhere and anytime. A comprehensive source of information on mobile computing, this handbook explores the challenges of the computing paradigm that is expected to drive technology throughout the next decade. With chapters written by experts in the field, it covers a range of topics, from basic concepts to research-grade material. By covering research issues and the direction of mobile computing as well as technical information, this text is a complete reference for mobile computing. The movement toward miniaturized and mobile computing has created more opportunity for cyber thieves. To respond effectively, IT security professionals need a resource that combines the understanding of investigative techniques with the technical knowledge of cyberspace. Cyber Crime Investigator's Field Guide, Second Edition provides an investigative framework, demonstrates the knowledge of how cyberspace really works, and explains the tools needed to pursue cyber criminals. This volume provides the details of investigating computer crime from soup to nuts. It covers the entire investigative p "Organizations demand experts with both investigative talents and a technical knowledge of how cyberspace really works. Cyber Crime Investigator's Field Guide, Second Edition provides the investigative framework that needs to be followed, along with information about how cyberspace works and the tools that reveal the who, what, when, where, why, and how in the investigation of cyber crime. This volume offers a valuable Q & A by subject area, an extensive overview of recommended reference materials, and a detailed case study."--Jacket "Curing the Patch Management Headache provides IT executives and managers with the support and guidance that they need to integrate an effective patch management process into their environments. It emphasizes the importance of patch management and explains why having organizational support for the process drives successful implementation. The book details how patches should be implemented on devices and systems within an infrastructure, and how to distribute them in a timely manner."--Jacket "Mobile Computing Handbook explores the benefits and challenges of the field, and includes the latest insight into the major topics of this emerging discipline. It provides, in 40 chapters written by industry experts, technical information about all aspects of mobile computing, from basic concepts to research-level material, with learned analysis of future directions. This handbook captures the present state of the field and serves as an invaluable source of reference material."--Jacket After a preface on current trends in modern production systems, in which we define production models such as flexible, agile, and holonic manufacturing, the concepts of agent and multiagent systems (deriving from distributed artificial intelligence, as well as from decision and information technology) are introduced as a natural requisite to achieve the peak performance demanded by today's modern manufacturing. Explores the challenges in mobile computing. This book describes various aspects of mobile computing, from basic concepts to research-level material, with learned analysis of future directions. A metropolitan area network (MAN) generally spans within a network radius of 10 to 120 kilometers, and the typical network topology that it adopts can be point to point, ring, or mesh. Carnegie Mellon's Wearable Computers project is helping to define the future not only for computing technologies, but also for the use of computers in daily activities. In recent years, advances in digital technologies have created significant changes in the way we reproduce, distribute, and market intellectual property (IP). The patch management process is a critical element in protecting any organization against the emerging risk of exploited vulnerabilities.