The aim of this book is to investigate the prospects for mobile communications in the new millennium. In effect, this boils down to a key issue: Will the so-called third generation of mobile (alternatively, wireless or cellular) technology turn out to be a success or a failure? This is no minor issue since telecommunications is one of the world’s leading industries, and one that is increasingly moving from a fixed-wire to a wireless basis. Furthermore, whereas widespread fixed-wire telecommunications have historically been the preserve of developed countries, the advent of mobile telephony has made it possible for less-developed countries to improve their communications capability very substantially and speedily without the need to undertake impossibly costly investment in fixed-wire links. Thus it is China that is currently the largest market for basic mobile telephony in the world, having recently overtaken the USA.

However, there is a clear difference between the basic voice telephonydriven networks that are currently in common usage, and the datadriven networks that are gradually being introduced. No one questions that the level of demand for basic voice telephony, however transmitted, will continue to grow, but the underlying difficulty is that the explosion of demand for wireless-delivered voice telephony has already created a situation whereby networks are close to saturation point in developed markets. Hence, network operators need to introduce new, high-value-added services if they are not to see their average revenue per user (ARPU) decline as they seek out the remaining marginal customers who neither want to spend much at all on calls nor to buy expensive, unsubsidised handsets. The trouble is that the basic technology and networks developed for voice are inadequate for more sophisticated purposes, although it does have to be said that the development of the short message service (SMS) has proved to be an unprecedented and, in truth, largely unanticipated success based on existing technology.

Covers: artificial neurons as models of their real counterparts; the geometry of network action in pattern space; gradient descent methods, including back-propagation; associative memory and Hopfield nets; and self-organization and feature maps.

This book grew out of a set of course notes for a neural networks module given as part of a Masters degree in “Intelligent Systems”. The people on this course came from a wide variety of intellectual backgrounds (from philosophy, through psychology to computer science and engineering) and I knew that I could not count on their being able to come to grips with the largely technical and mathematical approach which is often used (and in some ways easier to do). As a result I was forced to look carefully at the basic conceptual principles at work in the subject and try to recast these using ordinary language, drawing on the use of physical metaphors or analogies, and pictorial or graphical representations. I was pleasantly surprised to find that, as a result of this process, my own understanding was considerably deepened; I had now to unravel, as it were, condensed formal descriptions and say exactly how these were related to the “physical” world of artificial neurons, signals, computational processes, etc. However, I was acutely aware that, while a litany of equations does not constitute a full description of fundamental principles, without some mathematics, a purely descriptive account runs the risk of dealing only with approximations and cannot be sharpened up to give any formulaic prescriptions. Therefore, I introduced what I believed was just sufficient mathematics to bring the basic ideas into sharp focus.

Take command of core technologies at the heart of all telecommunications systems with the first book expressly designed to help you apply, reuse, and enhance building-block components from one generation of networks to the next. This unique problem-solver unravels the complexities behind such technologies as synchronization, multiple access, switching, and optics to help you tackle design challenges and optimize performance no matter what the system-GSM, 3G, ATM, WLAN, computer networking, satellite systems, and beyond-and pave the way to next-generation advances of your own. An indispensable reference, solutions kit, and idea book wrapped up in one, this workbench resource reviews today's networks and addresses problems like heterogeneity and backward compatibility. Moreover, it explores synchronization and phase-locked loops (PLLs) and their applications in digital networks, as well as multiplexing methods and techniques used in multiple access and random access. You get details on switching systems and routing in ISDNs, ATMs, and the internet, along with protocol theory, signaling systems, and data transfer protocols. Other key topics include public land mobile systems, line-of-sight radio systems, and optical communication system components.

Information systems have five main areas of research and practice in which humans relate to information and communications technology. Typically isolated from one another, these areas are: the nature of computers and information, the creation of information technologies, the development of artifacts for human use, the usage of information systems, and information technology as our environment. Philosophical Frameworks for Understanding Information Systems strives to develop philosophical frameworks for these five areas and provides researchers, scholars, and practitioners in fields such as information systems, public administration, library science, education, and business management with an exemplary reference resource.

About the Author

Dr. Andrew Basden is Professor of Human Factors and Philosophy in Information Systems at the University of Salford, UK. After obtaining a first class honours degree in Electronics and a Doctor of Philosophy in Computer-Aided Design at the University of Southampton, he spent 14 years in computer programming in applications and expert systems in the pharmaceutical, health, chemical and construction sectors, before returning to academic life in 1987. Since then he has taught and published in a wide range of fields, including knowledge based systems, knowledge acquisition, development methodologies, databases, multimedia, business information systems, human computer interaction, human factors, critical studies and philosophy. He is founder member of the international Centre for Philosophy, Technology and Social Systems. He is also a follower of Jesus Christ and a green activist, and has always tried to integrate all areas of his life into a coherent life-and-world-view.

By definition, a firewall is a single device used to enforce security policies within a network or between networks by controlling traffic flows.

The Firewall Services Module (FWSM) is a very capable device that can be used to enforce those security policies. The FWSM was developed as a module or blade that resides in either a Catalyst 6500 series chassis or a 7600 series router chassis. The “tight” integration with a chassis offers increased flexibility, especially with network virtualization and the incredible throughput that is not only available today but will increase significantly with the introduction of the 4.x code train.

The look and feel of the FWSM is similar to that of the PIX and ASA. These products are all part of the same family, originating with the PIX and the “finesse” operating system. If you have had any experience with either the PIX or ASA, you will find comfort in not having to learn another user interface.

Having a good understanding of the capabilities offered by the different types of firewalls will help you in placing the appropriate type of firewall to best meet your security needs.

A human observer is able to recognize the color of objects irrespective of the light used to illuminate the objects. This ability is called color constancy. In photography, color constancy is known under the name white balance. Most amateur photographers have probably experienced the following problem at one time or another when a photograph is taken. Light from a light source is reflected from the objects. The sensors measure the reflected light. The measurements depend on the type of light source used. For instance, if yellow light falls on a white wall, the sensor measures the yellow light that is reflected from the wall. Thus, the resulting colors may not be the same as the colors that were perceived by the observer. The wall will nevertheless appear to be white to a human observer. Digital cameras use postprocessing to achieve an approximately color constant or white-balanced image.

Obtaining a color constant descriptor from the image pixels is not only important for digital photography but is also very important for computer vision. Many algorithms work only under one set of lighting conditions but not under another. For instance, an algorithm may work very well under natural lighting but the same algorithm may not work as well when used under artificial illumination. Color constant descriptors are also very important for color-based object recognition. At present, it is not known how color constant descriptors are computed by the human visual system. However, a number of algorithms have been proposed to address the problem of color constancy. The book describes all of the major color constancy algorithms that are known from the literature together with recent research done by the author.

Human color perception is only approximately constant as you probably have noticed when buying clothes in a store. If you select a set of seemingly black trousers you may very well find out at home that the selected set of trousers is actually kind of bluish. Color perception is also influenced by the colors which are present in the surround of an object. In this case, color perception could have been influenced by the lack of a sufficiently complex surround. You can find out the color of a set of trousers by putting the trousers next to another set of trousers. If you place a seemingly black set of trousers next to another one you may find out that one is actually kind of dark bluish whereas the other one is indeed black. If you take the black trousers and place them next to black velvet you will think that the trousers are kind of dark grey and that the velvet is actually black. Why color perception sometimes behaves as just described will become clearer after reading this book.

While statistical mechanics describe the equilibrium state of systems with many degrees of freedom, and dynamical systems explain the irregular evolution of systems with few degrees of freedom, new tools are needed to study the evolution of systems with many degrees of freedom. This book presents the basic aspects of chaotic systems, with emphasis on systems composed by huge numbers of particles. Firstly, the basic concepts of chaotic dynamics are introduced, moving on to explore the role of ergodicity and chaos for the validity of statistical laws, and ending with problems characterized by the presence of more than one significant scale. Also discussed is the relevance of many degrees of freedom, coarse graining procedure, and instability mechanisms in justifying a statistical description of macroscopic bodies. Introducing the tools to characterize the non asymptotic behaviors of chaotic systems, this text will interest researchers and graduate students in statistical mechanics and chaos.

Presenting the basic concepts of chaotic systems, introducing the tools to characterize the non asymptotic behaviors of chaotic systems, and with an emphasis on systems composed by a huge number of particles, this text will interest researchers and graduate students in statistical mechanics and chaos.

About the Author

Patrizia Castiglione is a Researcher at the Institut des Nanosciences de Paris. Her main research topics are dynamical systems theory, quantum and classic chaos, turbulence, and the physics of colours applied to the study of artwork.

Massimo Falcioni is a Researcher at the University of Rome 'Sapienza'. His research focuses on elementary particle physics, dynamical systems and statistical mechanics.

Annick Lesne is a Researcher at the Institut des Hautes Etudes Scientifiques. Her research lies in renormalization methods for dynamical systems, non equilibrium statistical physics, and applications of dynamical systems theory and statistical mechanics to biological systems.

Angelo Vulpiani is a Professor of Theoretical Physics at the University of Rome "Sapienza", and is a Fellow of the Institute of Physics. His research interests are statistical mechanics, dynamical systems, turbulence, transport and reaction-diffusion in fluids.

Rudolf Graf and William Sheets have written a book containing twenty low-power (LP) transmitter projects, perfect for the electronics hobbyist and radio experimenter. Now that the FCC has changed its regulations about "pirate" transmissions, more and more people are setting up radio and video stations for broadcast from their homes. Build Your Own Low-Power Transmitters addresses applications for hobbyist broadcasting of AM, SSB, TV, FM Stereo and NBFM VHF-UHF signals with equipment the reader can build himself for thousands of dollars less than similar equipment sold on the retail market. The authors also fully explore the legal limits and ramifications of using the equipment as well as how to get the best performance for optimum range. The key advantage is referencing a low-cost source for all needed parts, including the printed circuit board, as well as the kit.

Projects in the book include: LP FM stereo transmitter; digitally synthesized PLL FM stereo transmitter; LP AM transmitter for 150-1710 KHz; radio control transmitter/receiver; carrier current transmitter and AM and FM receivers; LP VHF one-way and two-way audio links; 1-watt 40-meter CW transmitter for ham radio use; SSB LP transmitter for 10-meter ham radio use; 2-meter VHF FM ham radio transmitter; FM video link for 900 MHz NTSC/PAL operation; 2-watt TV transmitters for 440, 900 and 1300 MHz amateur TV NTSC/PAL transmissions; linear amplifier for 440MHz, 10-15watt NTSC/PAL operation; Downconverters for 440, 900 and 1300 MHz with VHF channel 3 or 4 output; TV video receiving systems and AM-FM IF systems; LP video link for UHF channels 14-18; 1-watt CW beacon transmitter for Part 15 LF radio experimentation; CW identifier for transmitters; test equipment projects for LP transmitters; as well as an RF power meter and modulation monitor.

Complete source information will be included to help each reader find the kits and parts they need to build these fascinating projects.

Unique among comparable project books, this one offers a low-cost source for all parts, including the printed circuit board. This allows immediate completion without needing to search for difficult to find parts

Features twenty low-power transmitter projects

" … The Best of 2600: A Hacker Odyssey is an important, amazing book that tells the story of these kids and adults as they explore a new frontier."
—John Baichtal (Wired Blog, August, 2008)

"...a testament to a culture which thrived before computers and the internet mattered to most of the world." (New statesman, September, 2008)

Since 1984, the quarterly magazine 2600 has provided fascinating articles for readers who are curious about technology. Find the best of the magazine’s writing in Best of 2600: A Hacker Odyssey, a collection of the strongest, most interesting, and often most controversial articles covering 24 years of changes in technology, all from a hacker’s perspective. Included are stories about the creation of the infamous tone dialer “red box” that allowed hackers to make free phone calls from payphones, the founding of the Electronic Frontier Foundation, and the insecurity of modern locks.

24 years of enduring exploits, creative controversy, and hackers who made history

It's colorful, controversial, cutting-edge — and you can't wait to read the next issue. Since its birth in 1984, 2600: The Hacker Quarterly has published the discoveries and adventures of hackers worldwide. Now you can enjoy the best of them all in this entertaining, provocative collection. From the first curious and intrepid souls who discovered they could outwit Ma Bell to those who've hacked the Department of Defense and ParadisePoker.com, they're all here, telling their stories in their own words.

Trailblazing tales from 2600

• Hacking an election

• An American Express phone story

• The world vs. Kevin Mitnick

• How to track any UK GSM mobile phone

• Pirate radio primer

• Simplex locks — so simple to break

• A hacker in Iraq

• The saga of Bernie S

• All the details about DeCSS

• Hacking Google Adwords

About the Author

Emmanuel Goldstein has been editor and publisher of 2600 from the start. He also hosts a weekly radio show, Off the Hook; served as technical consultant for the 1995 feature film Hackers; and has testified before Congress on the issue of hacking and where the threat actually lies. You can visit the 2600 web site at www.2600.com, or contact 2600 by mail at 2600 Magazine, PO Box 752, Middle Island, NY 11953.

The Step-by-Step Guide to Building World-Class Portlet Solutions–Fast!

 

Portlet development traditionally has been difficult and time-consuming, requiring costly resources and specialized expertise in multiple technologies. IBM^® WebSphere^® Portlet Factory simplifies and accelerates portlet development, enabling developers to build world-class portlet solutions without in-depth knowledge of portal technology.

 

Expert developer David Bowley walks you through several of today’s most common portlet development scenarios, demonstrating how to create powerful, robust portlets quickly and cost-effectively. Each walkthrough contains all the step-by-step instructions, detailed guidance, fast answers, and working sample code you need to get tangible results immediately.

 

The best resource available on WebSphere Portlet Factory, this bookreflects Bowley’s unsurpassed experience constructing large enterprise portals. Bowley covers everything from back-end integration to user interface and AJAX techniques, helping you choose the right builder tool for each task, and define high-level instructions that generate superior code artifacts. His example projects are simple enough to understand easily, but sophisticated enough to be valuable in real-world development.

 

This book will be indispensable to every developer who wants to succeed with WebSphere Portlet Factory, including Java™, J2EE™, and SOA developers at all levels of expertise, as well as Lotus^® Notes^® developers transitioning to WebSphere Portal.

 

Coverage includes

 

·        Creating robust portlets: tips, tricks, shortcuts, and previously undocumented ‘gotchas’

·        Incorporating Web services, Domino^® views/forms, and SQL data sources into your portlets

·        Formatting information for more effective display

·        Adding UI controls, charts, validation, Java methods, and other capabilities

·        Displaying context-sensitive content

·        Using AJAX in your portlets

·        Communicating between portlets

·        Implementing error handling, logging, and security

 

About the Author

David Bowley is a consultant for e-Centric Innovations, an e-business solution provider based in Melbourne, Australia. Over the past nine years, David has worked extensively with IBM technologies and has been involved in some of Australia’s largest portal projects. He holds numerous IT certifications in areas such as WebSphere Portal, WebSphere Portlet Factory, Java, Lotus Notes, .NET, DB2, Rational, SOA, and RUP. He is a frequent contributor to various technical magazines, including The View and Lotus Advisor.

"Scholars who are interested in getting up-to-date in contemporary philosophy of religion will find this book quite valuable."--Daniel A. Dombrowski, Religious Studies Review

The symposia and discussions presented here represent the proceedings of the 1999 annual philosophy of religion conference which took place at Claremont Graduate University. Previous publications in the series Claremont Studies in the Philosophy of Religion are: Philosophy and the Grammar of Religious Belief; Religion and Morality; Can Religion Be Explained Away?; Religion without Transcendence?; Religion and Hume’s Legacy; and Kant and Kierkegaard on Religion. It was thought appropriate in 1999 to prepare for the year 2000 by presenting a volume on the present state of philosophy of religion. It was impossible to include everything, so choice was made on the basis of movements which it was thought had to be represented. On the other hand, the conference was arranged with considerable trepidation, since there was always the danger that the six philosophical schools would pass each other by like ships in the night. The message in my Thai fortune-cookie, opened in the closing banquet of the conference, would have summed up my foreboding at its outset. It read, ‘You would be wise not to seek too much from others at this time.’ For once my fortune-cookie was not uncannily revelatory, since, as the discussions reveal, genuine attempts were made to probe and explore difficulties connected with each point of view. I am not going to rehearse these in this introduction. Instead, I am going to single out a feature of the conference which struck me most forcibly as its organizer.

Metaphors for God's Time in Science and Religion examines the exploratory work of metaphors for time in astrophysical cosmology, chaos theory, evolutionary biology and neuroscience. Stephen Happel claims that the Christian God is intimately involved at every level of physical and biological science. He compares how scientists and theologians both generate stories, metaphors and symbols about the universe and asks "who is the God who invents me?"

This book is about many questions: God, time, and the search by human beings for God in time and space. As Coleridge said of George Berkeley, the philosopher and bishop, because the topic reaches from ‘tar-water, ends with the Trinity, the omne scibile forming the interspace,’ 1 carrying a map or fixing upon a geophysical satellite might be useful as readers travel through the terrain. In the foreground I will examine the ways in which metaphors for time function in the natural sciences and theology or religious studies.2 But I will aim for a view of God and divine action in our world that includes, rather than excludes, all of creation – from the formation of metals and planets to human beings. To complete these tasks will require some clarity about notions of metaphor, changing notions of temporality in the sciences, and Christian theology. If it has been chronically painful for theology since the nineteenth century to become privatized, relegated to personal experience or intimate interpersonal interactions, this book hopes to be some remedy.

A growing number of scholars and pundits have declared that the twenty-first century will be the era of Islam. Such predictions, whether intended in a positive or negative light, err in failing to appreciate the spread and influence of Islam during the past millennium and a half, especially on the continents of Asia and Africa. Nonetheless, events during the first decade of the new millennium have underscored the importance of knowing about Islamic history and understanding the great diversity and richness of Muslim social, cultural, and religious practices. Suicide bomber attacks on the World Trade Center in New York and the Pentagon in Washington, D.C., on September 11, 2001, killed over three thousand persons. These tragic events and the media coverage of the aftermath as well as of the two wars subsequently fought in the Muslim countries of Afghanistan and Iraq have dramatically shown how little is known in the West about Islam and the Muslim world. Islam is, and has been for nearly fifteen centuries, a global religious and political phenomenon. Muslim networks of communication, from the annual pilgrimage to Mecca to the vast new power of the World Wide Web, have enabled Muslims to establish postmodern identities in a rapidly changing world, while at the same time preserving and reinvigorating a variety of time-honored traditions and practices. The Encyclopedia of Islam and the Muslim World is a sourcebook of information about Islam, its past and present, addressed to students and general readers as the twenty-first century begins its first decade.

The Encyclopedia of Islam and the Muslim World presents in two volumes some 504 articles, alphabetically arranged, in incremental lengths generally of 200, 500, 1,000, 3,000, and 5,000 words. The work of some 500 scholars appears in these pages, carefully reviewed and edited in a common style for easy access by readers who may presently have limited or no knowledge of Islam. It has also been prepared as a teaching and learning resource for teachers and students, from the high school grades through university. The alphabetical ordering of articles that follow, in the List of Articles, will enable readers to locate topics of interest quickly. A synoptic outline of the contents of the Encyclopedia, found within the frontmatter on pages xxxi–xxxiv, provides readers with an overview by topic and subtopic of the range and kinds of information presented in the main body of the Encyclopedia. Approximately 170 photographs, drawings, maps, and charts appear throughout the two volumes. A glossary in the back matter of volume two, which lists commonly used Arabic and other Islamic terms, such as shari'a, or “Islamic law,” will enable general readers to determine quickly the meaning of essential but perhaps less familiar terms in Islamic studies.

Who is this book for?

Oxford Practice Grammar is for students of English at a middle or 'intermediate' level. This means students who are no longer beginners but who are not yet expert in English. The book is suitable for those studying for the Cambridge First Certificate in English. It can be used by students attending classes or by someone working alone.

What does the book consist of?

The book consists of 153 units, each on a grammatical topic. The units cover the main areas of English grammar. Special attention is given to those points which are often a problem for learners:

the meaning of the different verb forms, the use of the passive, conditionals, prepositions and so on.

Many units contrast two or more different structures such as the present perfect and past simple (Units 14-15). There are also a number of review units. The emphasis through the whole book is on the meaning and use of the forms in situations. Most units start with a dialogue, or sometimes a text, which shows how the forms are used in a realistic context.

There are also 25 tests. These come after each group of units and cover the area of grammar dealt with in those units.

Each unit consists of an explanation of the grammar point followed by a number of exercises.

Almost all units cover two pages. The explanations are on the left-hand page, and the exercises are on the right-hand page. There are a few four-page units, with two pages of explanation and two pages of exercises.

The examples used to illustrate the explanations are mostly in everyday conversational English, except when the structure is more typical of a formal or written style (e.g. Unit 75B).

There are also appendices on a number of other topics, including word formation, American English and irregular verbs.

Two broad assumptions underlie this book: (1) that writing is a rational activity, and (2) that it is a valuable activity.

To say that writing is rational means nothing more than that it is an exercise of mind requiring the mastery of techniques anyone can learn. Obviously, there are limits: one cannot learn to write like Shakespeare or Charles Dickens. You can't become a genius by reading a book.

But you don't have to be a genius to write clear, effective English. You just have to understand what writing involves and to know how to handle words and sentences and paragraphs. That you can learn. If you do, you can communicate what you want to communicate in words other people can understand. This book will help by showing you what good writers do.

The second assumption is that writing is worth learning. It is of immediate practical benefit in almost any job or career. Certainly there are many jobs in which you can get along without being able to write clearly. If you know how to write, however, you will get along faster and farther.

Critical systems are often subject to certiication: a formal assurance that the system has met relevant technical standards designed to ensure it will not unduly endanger the public and can be depended upon to deliver its intended service safely and securely. Today, certiication1 of the dependability of a software-based system usually relies more on assessments of the process used to develop the system than on the properties of the system itself. While these assessments can be useful, few would dispute that direct observation of the artifact ought to provide a stronger kind of assurance than the credentials of its production method. Yet the complexity of software systems, as well as the discontinuous way they behave, renders them extremely dificult to analyze unless great care has been taken with their structure and maintenance.