References

Ahmed, I., Godbole, R., & Vishwanathan, S. (2005). An open standards approach to network-centric storage. Retrieved July 2005, from http www.netapp.com library tr 3121.pdf Barrett, D., & King, T. (2005). Computer networking illuminated. Jones and Bartlett Publishers. Chowdhry, P. (1997, December 15). Can gigabit ethernet and RSVP beat ATM PC Week Magazine. Retrieved from Cisco Systems. (2005). Retrieved June 2005, from http www.cisco.com Curtin, M. (2004). Introduction to network...

1

New Computer Network Paradigms and Virtual Organizations Guillermo Agust n Ib ez Fern ndez, Universidad Carlos III, Spain A computer network consists of computers that communicate via any physical media through a network formed by links and nodes, the nodes being the computers. Computer networks have evolved along their short history. Computer networks have changed drastically in mission and implementation from the early projects supported by the Advanced Research Projects Agency (ARPA) and...

Executive Summary

The Telecommunications Act of 1996 opened competition in the telecommunications market in the U.S. and forced the incumbent telecommunications companies to open both their physical and logical infrastructure for Competitive Local Exchange Carriers (CLECs). In this case study we focus on the problems that face a CLEC with regard to designing an information system and getting a back office system, called an Operations Support Systems (OSS), operational in a highly competitive, complex, fast-paced...

Case Description Small Beginnings

Siete's ambitions when starting the company were to develop applications for wireless communication which meet needs in a simple way. As previously mentioned, the initial product idea was the GMS-doorbell, a system allowing the occupant of a house to communicate with and open their door through their mobile telephone. Having just graduated from university, Siete Hamminga did not have sufficient resources to launch the business ofhis dreams. On February 15, 2002, he registered as a sole trader...

Dataset Analysis

The discussion in this section will be based only on the training data, since we will need to know whether a record is incorrectly classified as false positive (classified as 3G although the actual class is 2G). Since our algorithm does not produce the characteristics of 3G customers, therefore the false positives obtained in our experiment might be a useful insight to decide the characteristics of customers that are likely to change their 2G subscription to 3G. If a false positive is found, it...

Introduction

Wireless systems have been around for over a century. Guglielmo Marconi successfully transmitted Morse code from Cornwall, England to St-John's, Canada in 1901. The wireless technology has come a long way since then. The proliferation of Internet in every aspect of life resulted in rapid convergence of computing and communication industries fueling an explosive growth ofwireless Copyright 2009, IGI Global, distributing in print or electronic forms without written permission of IGI Global is...

K

Knowledge-based society 211, 219 knowledge-sharing culture 226 knowledge computing management 244 knowledge leadership 211 knowledge management (KM) 211 knowledge management in enterprises 265 knowledge management platform design 263 knowledge manager 249 knowledge resources 263 knowledge sharing 308 knowledge sharing culture 211 knowledge Web (KW) 253 knowledge work industries 59 KOMO Project 204 managing information systems integration 174, 182 manual data capture 75 mapping result...

Conclusion

We introduced a research test-bed tool for automatically synthesizing application-specific networks and observing the network evolution. In this article, we described a call for a network metric to examine the network evolution overtime. We have developed a number of network-device libraries over the past seven years for many different network technologies, such as Ethernet, ATM, and IP router. And we attached these libraries into Table 8. Three network designs produced by iCAD while connecting...

Conclusion And Future Work

Through a series of experiments and measurements made at various locations of the AUT's WY office building, we gained an insight into the performance of Wi-Fi links in an office environment. This project involves both literature review and practical investigation regarding the IEEE 802.11b protocol known as Wi-Fi. A number of conclusions can be drawn from the findings of this study. The use of electromagnetic waves as the medium instead of cables presents many technical challenges. To begin...

Wireless Local Area Networks

Wireless local area networks (WLAN) are rapidly replacing wires within homes and offices. The most common wireless LANs are based on the IEEE 802.11 standard (Gast, 2005 Wi-Fi Web site, n.d.). They are commonly referred to as WiFi networks. The phenomenal growth of Internet combined with increased use of portable, laptop computers also contributed to the rapid acceptance of WLANs. Some of the other factors that can be attributed to their widespread adaptation are their low cost and the ease of...

Chapter XXVII

Correia, University of Algarve, Portugal M. C. R. Medeiros, University of Algarve, Portugal In optical networks, survivability becomes very important because of the huge amount of traffic carried by fibers. Therefore, the prevention of service interruption, or the reduction of the service loss, must now be an integral part of the network design and operations strategy. In this chapter, optical network survivability is discussed and special emphasis has been given to WDM...

Lecturers perspective

Overall, the response of the two lecturers was enthusiastic they were keen to use the technology again. In terms of the audience response features provided, they rated the facilities that allowed them to pose questions, and to carry out in-class votes, as the most useful. In terms of student submitted comments and questions during the lecture, however, the usefulness of the system was hampered by the limited way the system accommodated the dynamic, performance nature of lectures. The...

IBSS Practical Setup

Ibss Setup

The following setup procedure creates a Colligo basic service set consisting of two Wi-Fi stations, as shown in Figure 3. Setting up such a Colligo ad hoc network session is relatively simple and straightforward. To initiate a session, all participating stations must activate their Wi-Fi adapter and run the Colligo software. When Colligo is used for the first time, it is also necessary to enter a user name and other personal details for identification purposes. Figure 4a shows the Colligo main...

Developing Effective Mobile Advertising Campaigns

One of the main challenges and opportunities for mobile advertising companies is the personal nature ofmobile phones. Advertising campaigns over mobile phones are very sensitive and companies that engage in this type of marketing need to be careful not to offend users. Will Harris, global marketing director for Genie, British Telecom's mobile Internet service, emphasizes Pesola, 2001 Sending unsolicited messages is tantamount to brand suicide. Our business is entirely dependent on the goodwill...

The Search for External Financing

To move the business forward Siete realized that he needed external financing and decided to conduct a share issue. Roel Pieper had previously indicated that he would invest but Siete did not want to solely rely on this contact and instead he made a list and contacted several leading Dutch entrepreneurs who he thought might be interested in investing. Unfortunately, with these solicitations he failed to find any investment however, he did receive a copy of one of the entrepreneur's motivational...

Ascend Ckdd For Analysis In The Aviation Domain

In evaluating the effectiveness of the C-KDD framework and approaches, the software was customized and deployed in an operational set ting and used for an analysis on real data sources. The C-KDD framework and initial prototype was used in a joint project of the Center for Advanced Aviation System Development CAASD of The MITRE Corporation and the Department of Computer Science of Georgetown University. This joint project called Agent-Based Software for the Correlation of EN-route Data ASCEND...

Families Of Markov Predictors

We explained earlier how Markov predictors create probabilistic models for their input sequence s . To realize these models, they need a data structure, a dictionary to keep track of the contexts of interest, and some counts used in the calculation of the conditional probabilities P . The preferred choice for this task is the use of digital search trees trees . The root node ofthe tree corresponds to the null event or symbol, whereas every other node of the tree corresponds to a sequence of...

The Tide Turns

Siete decided that he was only willing to stop the enterprise if he had the feeling that he had tried everything. He formulated a list of five things to do before allowing himselfto quit and he set about these on his return, but not before sending a copy of the newspaper article to one of the potential investors who had previously backed out. Siete also sent a candid e-mail to Siebren de Vries, the founder and owner of Chess telling him he was considering his options for the business see Table...

Rfid Wireless Networks

Several organizations, including Wal-Mart and Proctor amp Gamble P amp G , are currently testing and deploying radio frequency identification RFID technology in their supply chains. In addition, the Department of Defense has mandated that its suppliers tag their products at the pallet level using RFID tags. The potential advantages of RFID technology in the supply chain are numerous. RFID technology has the ability to provide up-to-the-minute information on sales of items, and thus can give an...

Analysis Using Binomial Distribution

The binomial distribution gives the discrete probability distribution Pp n N of obtaining exactly n successes terminal falling only within a particular AP range, e.g., AP-5 out of N Bernoulli trials or terminals falling within the coverage of a particular AP and its neighboring APs where the result of each Bernoulli trial is true with probability p and false with probability q 1 -p . The binomial distribution is therefore given by Assume that the desired probability ofterminals falling within...

Advertising Through Mobile Phones

Evans And Wurster 1997

With the increasing number ofmedia types, it has become more and more difficult for marketing managers to find appropriate strategies to target potential customers with their messages. First, while it was possible in the past to capture a large segment of society by placing advertisements with the main TV networks, the rise of private channels has led to a high degree of fragmentation, thereby complicating access to consumers. Similar fragmentation can be observed with other massmedia types...

Chapter VIII

Designing a Resilient and High Performance AbidAl Ajeeli, University of Bahrain, Bahrain Yousif Al-Bastaki, University of Bahrain, Bahrain This chapter describes the detailed configuration and LAN infrastructure design at the University of Bahrain UOB . The authors describe the configuration based on the new setup and migration requirements and indicate how the design satisfies those requirements. The chapter explains the detailed configuration of the design process of the distribution layer...

Background History of the Organization

Waleli1 is a high tech company which utilizes the latest proven technological developments in wireless communication to bring innovations to the market. It aims to develop wireless communications to solve needs, both between people mobile applications and between machines and apparatuses machine-to-machine, or M2M, communication , in a simple way. Siete Hamminga, the founding entrepreneur, graduated with a master's degree in industrial engineering and management from the University of Twente in...

Wireless Channel Models

Shadowing Wireless Communication

Noisy, error-prone, and subject to frequent outages, conditions on a wireless link can be, on average, a hundred times worse than on a wired link. As a signal from a radio propagates through the environment, it is dramatically attenuated and distorted by physical phenomenon such as path loss, shadowing, and fading. The degree and nature of that depends on many factors such as the operating frequency, the characteristics of the terrain, and the mobility of the participating radios. Such...

Ad Hoc Wireless Networks

Secure Aodv Diagram

An ad hoc wireless network is an impromptu network formed by several wireless devices, such as PDAs, laptops, and phones, without relying on an existing network infrastructure Perkins, 2000 . These devices denoted as nodes may be mobile and use a common wireless technology such as WiFi. To facilitate communication among the nodes that are not directly in the radio range of one another, the other nodes act as intermediate routers, just like routers in the Internet. Such networks are useful in...

Component Specification for Data Extraction and Loading

In the selection and pre-processing phases of KDD, various data sources must be identified and the underlying data must be captured in machine-readable format. The approach taken in this work is to perform a component-mediated step that collects heterogeneous data and populates that data in several relational database tables using traditional approaches i.e., existing data transformation techniques are embedded in component Chawathe et al., 1994 Nodine, Fowler, Ksiezyk, Perry, Taylor, amp...

Literature Review

The consumer buying behavior process inside the store has been studied for several dozens of years. There have been attempts to research it in many different ways. For example, Kohne, Totz, and Wehmeyer 2005 use conjoint analysis, a classical technique, to identify consumer preferences in multi-attribute decision making for designing a new context in sensitive services. They evaluate consumer behavior by using a fictitious example of location-based services in a touristic setting. In this...

The Technological Platform For Mobile Marketing

Kalakota and Robinson 2002 define mobile marketing as the distribution of any kind of message or promotion delivered via a mobile handset that adds value to the customer while enhancing revenue for the firm. It is a comprehensive process that supports each phase of the customer life cycle acquisition, relationship enhancement, and retention. A variety of technological platforms are available to support mobile marketing. Here we describe briefly some of the principal components. For a more...

The Iterated Function System

Iterated Function System

The iterated function system IFS is another fractal that can be applied in computer science. Barnsley 1993, p. 80 defined the IFS as follows A hyperbolic iterated function system consists of a complete metric space X, d together with a finite set of contraction mappings wn X X with respective contractivity factor s, for n 1, 2, , N. The abbreviation IFS is usedfor iterated function system. The notation for the IFS just announced is X, w, n 1, 2, , N and its contractivity factor is s max sn n 1,...

Wan Interconnectivity Setup

Wan Interconnectivity includes an intercampus link between Issa-town and Sukhair as well as Internet connectivity. The intercampus link uses ATM to connect the two campus locations via Batelco at OC3 155 Mbps speed . As the connection is established through Nortel C5000 and C1400 switches, 3Com network design keeps the connectivity via WAN VLAN connects directly to Nortel on both sides. WAN VLAN is an isolated network on VLAN 1 on each 4007R that connects at 100 Mbps speed to the C5000 on both...

Security In Wireless Networks

Besides performance, security is an important issue in wireless ad hoc networks. The traditional security issues on the Internet are keeping data confidential and unaltered. The most common solution is to encrypt the data by the source application and decrypt it by the de stination application Schneier, 1996 . Intermediate nodes cannot examine the contents and cannot alter it without being detected by the destination. Since only some applications need it, this is implemented as an end-to-end...

How should we combine the Mobile phone with other media Types to create Integrated campaigns

Because of its limitations regarding screen size, sound, and handling, the mobile phone is not suitable for stand-alone campaigns. Instead, it should be used to extend the presence of a company into an additional channel Carat Interactive, 2002 . Doing so, the mobile phone plays the role of the natural glue between other media types because of its ubiquitous nature it is handy and turned on when watching TV, looking at a billboard on the subway, buying groceries at the supermarket, or listening...

Acceptance Of Mobile Marketing

Mobile Marketing Acceptance

Now we have discussed the technological and conceptual factors surrounding mobile marketing, let us examine the variables that influence customer acceptance. Specifically, this section aims to explore the few studies already accomplished on mobile marketing acceptance and provide a model that summarizes the main variables concerning this issue. There is no doubt that mobile marketing is still at an embryonic stage. However, several recent studies help us to understand some key factors...

Fractal Geometry in Computer Graphics

Fractal geometry has been generalized by the computer graphics community and it includes objects outside Mandelbrot's original definition Foley, van Dam, Feiner, amp Hughes, 1997 . It means anything that has a substantial measure of exact or statistical self-similarity. In the case of statistical fractals, it is the probability density that repeats itself on every scale. An application field of fractal geometry is in the compression of images fractal compression . A fractal compressed image can...

Fractal Geometry for Modeling Landscapes

Fractal Brownian Motion

Another interesting application of fractal geometry in computer science is for modeling landscapes. Fournier, Fussel, and Carpenter 1982 developed a mechanism for generating a kind of fractal moun tain based on a recursive subdivision algorithm for a triangle. Here, the midpoints of each side of the triangle are connected, creating four new subtriangles. Figure 5a shows the subdivision of the triangle into four smaller triangles, and Figure 5b illustrates how the midpoints of the original...

Mathematical Model for Trust The Trust Graph

We may represent the trust in a network by a directed graph, the trust graph, whose links A, B correspond to the explicit trust that node A has in node B. Such links are indicated by A B. The implicit trust that a node X has in another node Y is then represented by a trust path from X to Y in which node X awards trust to node Y via a chain of intermediary nodes Xi, where Xi awards trust explicitly to the next node X 1 in the chain. Such trust may be supported by certificates. For example, node...

Fractal Geometry for Controlling Network Traffic

Internet Self Similar

Different models on the nature of network traffic have been proposed in the literature, but in contrast to traditional models, network traffic presents a kind of fractality J. Liu, 2006 Norros, 1994, 1995 Park amp Willinger, 2000 . In the last decades, many fractal traffic processes were described, but the fractality in the traffic was a complex concept, and different approaches were developed. Early models included fractional Brownian motion Levy Vehel amp Riedi, 1997 Norros, 1994, 1995 , the...

Load Balancing and Terminal Association

Since an AP and its associated clients share a limited bandwidth resource, APs can become overloaded, leading to congestion and poor network performance. On the other hand, a client may be able to communicate quite succe ssfully with two or more APs, but at the expense of possibly causing congestion at an AP. Thus, one would like to have a wireless LAN that is capable of distributing client associations among APs more or less uniformly so that no one AP is overloaded. WLAN equipment with this...

New Orleans Louisiana

In late August of2005, Hurricane Katrina slammed ashore near the outfall of the Mississippi River as a category 3 hurricane. This storm caused considerable damage far and wide however the city that received the most attention was New Orleans. The storm surge from the hurricane caused New Orleans' extensive levee system to fail and the waters of the Gulf of Mexico came flooding into the city streets. What followed over the course of the next week or so can only be described as chaos. Emergency...

Management Structure

Board Directors Figure

Broadstreet Communications had a fairly flat but hierarchical organizational structure as shown in Figure 1. The board of directors was composed of representatives from the Venture Capitalist groups 3 and 2 members of Broadstreet Communications, namely, the CEO and president, plus one outside members agreed upon by those members. The CEO was also the Chairman of the Board of Directors. The two anomalies in the structure were that the CIO and the VP of Sales had junior VPs for information...

Related Work

Mobile agents have been recognized as a promising technology for mobile e -busine ss applications. The interest of developing mobile agent systems for mobile devices has increased in recent years. Telescript describes a scenario in which a personal agent is dispatched to search a number of electronic catalogs for specific products and returns best prices to a PDA from where it starts Gray, 1997 . An integrated mobile agent system called Nomad allows mobile agents to travel to the eAuc-tionHouse...

Wireless Networks Evolution

802 Protocol Stack

Besides the wired computer networks evolution, radio packet switched networks evolved in parallel. With the advances in radio and portability of computers, the Department of Defense sponsored the military project Survivable Adaptive Radio Networks SURAN program in the early 1980s to provide packet-switched networking in a battlefield without any fixed infrastructure. After significant work, the IEEE has issued since then with great success several 802.11 Wireless Local Area Network WLAN...

Simulation Environments

Ns-2 Fall et al., 2003 and BonnMotion 2005 are discrete event simulators used specially for simulating network for research purpose. Ns-2 provides substantial support for simulation of transmission control protocol user datagram protocol TCP UDP, routing protocols such as DSR and AODV, and multicast protocols over wired and wireless networks. An extension developed by UCB Daedelus, CMU Monarch projects, and Sun Microsystems included wireless network communication in Ns-2. Features such as a...

BSS and ESS Setup

Bss Ess Wireless

In the infrastructure mode, the wireless network operates under the coordination of an AP. The AP itself is connected to a wired network such as a LAN. In a simple home network, the AP can be directly connected to a router, which provides access to the Internet see Figure 8 . Two stations such as Host 1 and Host 2 communicate through an AP to access the Internet. The AP is connected to a wired network even when access to the Internet is not required. In our case, no access to the Internet is...

Data preprocessing

Before we supply the data into the AIRS algorithm, we need to preprocess the data. The data preprocessing that is done are normalizing numerical value, handling missing values, and converting categorical variables from literal strings to integer indices for easier processing. For each numerical data field, we perform min-max normalization. First, we scan the data to find the minimum and maximum value of the field, then we normalize each value in this field to the range of 0,1 by converting it...

Consumer Acceptance of Mobile Marketing

The acceptance of a mobile marketing message is likely to be influenced by the consumer's acceptance of the mobile medium, the relevance of the content, and the context ofthe marketing message Barnes amp Scornavacca, 2004 Dickinger et al., 2004 Enpocket, 2003 Heinonen amp Strandvik, 2003 . Messages that are concise, funny, interactive, entertaining, and relevant to the target group usually achieve higher levels of success Dickinger et al., 2004 Jelassi amp Enders, 2004 . The recent m-business...

Internationalization Challenge

The current challenges include going international with the 21Switch product. Waleli has already made contact with, among others, Deutsche Telecom, British Telecom, and Telia Sweden , and these contacts are close to fruition. To help with international efforts, Waleli has entered into an arrangement with Lawrence Masle. Lawrence Masle is an American with a very strong corporate track record he was vice president of Corporate Communication and Business Development with Ericsson in Sweden. He...

The AIRS Algorithm

Processes in biological immune systems have inspired the design of AIRS. An artificial recognition ball ARB is used to represent a set of identical B-cells. The ARBs in the system will compete for B-cells in order to survive in the evolutionary sense therefore an ARB with no B-cell will be removed from the system. A fixed number ofB-cells are allowed in the system, so the least stimulated ARB will not be able to get any B-cells, and will therefore be removed from the system. We will at times...