ABSTRACT In the context of the rapid growth of mobile computing penetration in developing countries, mobile telephony is currently considered to be particularly important for such development. Yet, until recently, very little systematic evidence was available that shed light on the developmental impacts of mobile computing. The objective of this paper is to evaluate the problems and prospects of mobile computing in Nigeria. The paper will be analyzed by theme in order to provide a thematic overview
Words: 8346 - Pages: 34
industries usually present high levels of rivalry. Many companies are conscious about industry concentration and in order to measure it, they use the “concentration ratio” (CR). The CR which has been reported by SIC (Standard Industrial Classification code) shows the percentage of the market share seized by the top 4 companies in the industry. If the industry has a high concentration ratio, this means that these firms are controlling the market by holding a big percentage of the market share. With only
Words: 1235 - Pages: 5
Suppliers * Buyers * Entry/Exit Barriers * Substitutes * Rivalry Supplier power * Supplier concentration * Importance of volume to supplier * Differentiation of inputs * Impact of inputs on cost or differentiation * Switching costs of firms in the industry * Presence of substitute inputs * Threat of forward integration * Cost relative to total purchases in industry Buyer power * Bargaining leverage * Buyer volume * Buyer information * Brand
Words: 1778 - Pages: 8
Communication (2G) 2G digital technologies can be divided into two standards: TDMA (Time Division Multiple Access) - GSM: Originally from Europe but used worldwide - iDEN: Proprietary network used by Nextel in the US - PDC: Used exclusively in Japan CDMA (Code Division
Words: 1039 - Pages: 5
Part-1 1. What are common carriers, local exchange carriers, and interexchange carriers? A common carrier is a private company that sells or leases communication services and facilities to the public. Common carriers are profit-oriented, and their primary products are services for voice and data transmissions, both over traditional wired circuits as well as cellular services. Common carriers often supply a broad range of computer-based services, such as the manufacturing and marketing
Words: 1686 - Pages: 7
VOICE, VIDEO, AND DATA NETWORK CONVERGENCE VOICE, VIDEO, AND DATA NETWORK CONVERGENCE ARCHITECTURE AND DESIGN, FROM VOIP TO WIRELESS JUANITA ELLIS CHARLES PURSELL JOY RAHMAN Amsterdam Boston London New York Oxford San Francisco Singapore Sydney Tokyo Paris San Diego This book is printed on acid-free paper. Copyright 2003, Elsevier Science (USA). All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic
Words: 125371 - Pages: 502
Case D M-COMMERCE Q1. What is the 8-second rule and why is it important to m-commerce technology? The 8-second rule is an old way of measuring the adequate response time of a webserver through different bandwidth connections, the average web user will wait about eight seconds for a page to download, but that current average download time across backbone connection on most web sites is almost ten seconds. If the load time of a webpage is more than 8 seconds, users will have no patience to wait
Words: 1077 - Pages: 5
Introduction: In 1979, Harvard Business Review published “How Competitive Forces Shape Strategy” by a young economist and associate professor, Michael E. Porter. It was his first HBR article, and it started a revolution in the strategy field. In subsequent decades, Porter has brought his signature economic rigor to the study of competitive strategy for corporations, regions, nations, and, more recently, health care and philanthropy. “Porter’s five forces” have shaped a generation of academic research
Words: 11910 - Pages: 48
ABSTRACT—SpaceWire is a real-time communications network for use onboard spacecraft. It has been designed to connect together sensors, mass-memories, processing units, and downlink telemetry sub-systems onboard a spacecraft into a lightweight, high-performance data-handling network. This paper provides an introduction to SpaceWire and the SpaceWire standard. It describes the key features of SpaceWire. The many current and planned space missions that are using or plan to use SpaceWire for onboard
Words: 3798 - Pages: 16
New York University Computer Science Department Courant Institute of Mathematical Sciences Course Title: Data Communication & Networks Instructor: Jean-Claude Franchitti Course Number:CSCI-GA.2662-001 Session: 1 Assignment #1 Solutions 1. Problem 1 – Modeling delay in a communications network: (a) Identify and describe in ONE sentence the main components of delay in a communications network. (b) Develop an equation for the end-to-end delay along a communications path including various
Words: 2524 - Pages: 11
