72 research outputs found

    Factors Contributing to The Rapid Growth of Kenyan Optical Fiber Network Infrastructure

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    Summary In the recent past, Kenya has experienced a rapid growth of the optical fiber network. In this paper we present the factors contributing to the rapid growth of Kenyan optical fiber network infrastructure. Currently, Kenya is served by four undersea cables TEAMS, EASSy, SEACOM and LION2. The landing of these four undersea cables at the Kenyan coast has been a major boast to the information and communication technology (ICT) industry. Apart from the landing of undersea cables, the rapid growth of the optical fiber infrastructure network in Kenya has been attributed to many factors which we have discussed in this paper. In major Kenyan towns, Fiber-to-the-home is considered the home user's dream as it would enable service providers to offer a hefty selection of services including high-speed Internet, broadcast cable television, direct broadcast satellite television, and additional two-way video-based services. This has lead Telecommunications industry in Kenya to revolutionize leading to robust and wide spread optical network

    Broadcasting the 2006 World Cup: The Right of Arab Fans versus ART Exclusivity

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    The 2006 World Cup found itself at the center of Arab countries’ attention. In the past fans enjoyed free access to the televised World Cup on public channels that maintain publicservice obligations.3 However, Arab Radio & Television (ART), a commercial broadcaster, bought the telecast rights to the World Cup matches in Arab countries. As a result of this deal, fans in Arab countries were not able to conveniently watch the World Cup broadcast. Further, the legal significance of the ART exclusive rights deal is not yet fully appreciated in Arab countries

    Novel Tuned Rectangular Patch Antenna as a Load for Phase Power Combining

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    Wireless communication systems have advanced significantly from the simple components. Guglielmo Marconi used to transmit radio signals across the Atlantic Ocean at the turn of the 20th century. Today, mobile and satellite communications permeate all aspects of our lives. The number of mobile and cellular phones has skyrocketed in recent years while satellite communication traffics including international telephone calls and DBS-TV (direct broadcast satellite television) has also increased substantially. Commercial cellular and PCS mobile communications [1] currently occupy the 800 MHz-2 GHz spectral region. Military and commercial satellite communications [2] including voice, data, and DBS-TV operate at higher frequencies ranging from 4-30 GHz, and are moving up higher to 60 GHz and beyond in order to facilitate higher data rates and a wider range of services. While the initial technological achievements in both mobile and satellite communications were geared to provide reliable service with wide functionality, there is a current focus on lowering the cost of service while maintaining superior quality. One of the main approaches to reducing system and operating costs is the conservation of system power resources and minimization of power wasted as heat. Of the approximately 250W of power produced by the solar-cell arrays on a typical satellite, more than 125W is dissipated as heat due to inefficient operation of the transmitter power amplifiers [2]

    More Than a Wing and a Prayer: Government Indemnification of the Commercial Space Launch Industry

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    Using rockets to launch communications satellites and other spacecraft poses risks to the uninvolved public, including persons and property under the flight path of the launch vehicle. The federal government plays a pivotal technical role during the actual launch by carrying out certain risk-related procedures, thus causing third-party risk to be jointly produced by the company and the government. In addition, under the Commercial Space Launch Act, the government partially indemnifies commercial launch companies for third-party damages. We compare the indemnification policy to optimal liability rules under public-private co-production of risk. Under modest assumptions, shared liability created by the indemnification rules decreases the incentive of both parties to take care relative to the optimum. If care were observable, it would be preferable for the government to fully indemnify companies that take due care. The role of the government as an agent for third parties may qualify these findings.government indemnification, liability, insurance, space transportation

    More Than a Wing and a Prayer: Government Indemnification of the Commercial Space Launch Industry

    Get PDF
    Using rockets to launch communications satellites and other spacecraft poses risks to the uninvolved public, including persons and property under the flight path of the launch vehicle. The federal government plays a pivotal technical role during the actual launch by carrying out certain risk-related procedures, thus causing third-party risk to be jointly produced by the company and the government. In addition, under the Commercial Space Launch Act, the government partially indemnifies commercial launch companies for third-party damages. We compare the indemnification policy to optimal liability rules under public-private co-production of risk. Under modest assumptions, shared liability created by the indemnification rules decreases the incentive of both parties to take care relative to the optimum. If care were observable, it would be preferable for the government to fully indemnify companies that take due care. The role of the government as an agent for third parties may qualify these findings.government indemnification, liability, insurance, space transportation

    License Auctions and Market Structure

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    We analyze the interplay between license auctions and market structure in a model with several incumbents and several potential entrants. The focus is on the competitiveness induced by the number of auctioned licenses. Moreover, we study how the auction format affects the incentives for explicit or tacit collusion among incumbents. A crucial role is played by the relation between the number of incumbents and the number of licenses. If the number of incumbents is greater than the number of new licenses, we show that auctioning more licenses need not result in greater competitiveness. If the number of licenses exceeds the number of incumbents, we display plausible conditions under which all incumbents get a license. Finally, we suggest a positive role for some auction formats in which the number of licenses is endogenously determined at the auction. We illustrate some results with examples drawn from European license auctions for 3G mobile telephony.

    An Investigation Of Factors Impacting The Use Of Technology In A Home School Environment

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    Home school populations have been studied for socialization and academic preparedness, but there are few studies on the use of technology among home schooled families.  One researcher, in studying technology use among home school families in the greater Albany, New York area, found that the use of technology had a positive influence on the decision to home school and to allow home school families to create and maintain groups of like-minded home schoolers in their quest to educate their children. The objectives of this study are to understand what technologies are being used by home school families and about perception of technology in four areas of technology usage: 1) to build social networks, 2) acquire and share knowledge, 3) administrative actions and 4) instructional activities.  This research shows that when technology is perceived as easier to use, it will lead to perceived usefulness, at a higher significance than leading to actual use.  Further, it was surprising that the models did not show perceived usefulness leading to actual use, which is indicated in the literature

    Internationalization plan of Nmusic to India

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    A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economic

    Seventy Years of Radar and Communications: The Road from Separation to Integration

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    Radar and communications (R&C) as key utilities of electromagnetic (EM) waves have fundamentally shaped human society and triggered the modern information age. Although R&C have been historically progressing separately, in recent decades they have been moving from separation to integration, forming integrated sensing and communication (ISAC) systems, which find extensive applications in next-generation wireless networks and future radar systems. To better understand the essence of ISAC systems, this paper provides a systematic overview on the historical development of R&C from a signal processing (SP) perspective. We first interpret the duality between R&C as signals and systems, followed by an introduction of their fundamental principles. We then elaborate on the two main trends in their technological evolution, namely, the increase of frequencies and bandwidths, and the expansion of antenna arrays. Moreover, we show how the intertwined narratives of R\&C evolved into ISAC, and discuss the resultant SP framework. Finally, we overview future research directions in this field
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