Performance Newsletter, Summer 2009

Quarterly newsletter from Department of Administrative Services, about computer related information.

Performance Newsletter, Spring 2009

Quarterly newsletter from Department of Administrative Services, about computer related information.

Performance Newsletter, Fall 2009

Quarterly newsletter from Department of Administrative Services, about computer related information.

Disseny pràctic d'un transmissor d'àudio complert utilitzant una modulació AM

RESUM Un transmissor d’AM (modulació per amplitud), utilitza una de les moltes tècniques de modulació existents avui en dia. És molta la importància que té la modulació de senyals i aquests en són alguns exemples: -Facilita la propagació del senyal per cable o per aire. -Ordena l’espectre, distribuint Canals a les diferents informacions. -Disminueix la dimensió de les antenes. -Optimitza l’ample de banda de cada canal. -Evita interferències entre Canals. -Protegeix la informació de les degradacions per soroll. -Defineix la qualitat de la informació transmesa. L’objectiu principal d’aquest treball, serà realitzar un transmissor d’AM utilitzant components electrònics disponibles al mercat. Això es realitzarà mitjançant diversos procediments de disseny. Es realitzarà un procediment de disseny teòric, tot utilitzant els “datasheets” dels diferents components. Es realitzarà un procediment de disseny mitjançant la simulació, gràcies al qual es podrà provar el disseny del dispositiu i realitzar-ne algunes parts impossibles a reproduir teòricament. I finalment es realitzarà el dispositiu a la pràctica. Entre les conclusions més rellevants obtingudes en aquest treball, voldríem destacar la importància de la simulació per poder dissenyar circuits de radiofreqüència. En aquest treball s’ha demostrat que gràcies a una bona simulació, el primer prototip de dispositiu creat ens ha funcionat a la perfecció. D’altre banda, també comentar la importància d’un disseny adequat d’antena per poder aprofitar al màxim el rendiment del nostre dispositiu. Per concloure, la realització d’un aparell transmissor aporta unes nocions equilibrades d’electrònica i telecomunicacions importants per al disseny de dispositius de comunicació.

Sistemes encastats en temps real

Resum En l’actualitat, els sistemes electrònics de processament de dades són cada cop més significatius dins del sector industrial. Són moltes les necessitats que sorgeixen en el món dels sistemes d’autentificació, de l’electrònica aeronàutica, d’equips d’emmagatzemament de dades, de telecomunicacions, etc. Aquestes necessitats tecnològiques exigeixen ser controlades per un sistema fiable, robust, totalment dependent amb els esdeveniments externs i que compleixi correctament les restriccions temporals imposades per tal de que realitzi el seu propòsit d’una manera eficient. Aquí és on entren en joc els sistemes encastats en temps real, els quals ofereixen una gran fiabilitat, disponibilitat, una ràpida resposta als esdeveniments externs del sistema, una alta garantia de funcionament i una àmplia possibilitat d’aplicacions. Aquest projecte està pensat per a fer una introducció al món dels sistemes encastats, com també explicar el funcionament del sistema operatiu en temps real FreeRTOS; el qual utilitza com a mètode de programació l’ús de tasques independents entre elles. Donarem una visió de les seves característiques de funcionament, com organitza tasques mitjançant un scheduler i uns exemples per a poder dissenyar-hi aplicacions.

Iowa Communications Network Fiscal Year 2009 Annual Report

On behalf of the Iowa Telecommunications and Technology Commission (ITTC) overseeing the Iowa Communications Network, I am pleased to submit the Fiscal Year 2009 Annual Report. Throughout the report you will find stories and examples that demonstrate the many ways in which ICN video, voice, Internet, and data services have touched the lives of Iowans across our state. The ITTC strongly supports the IJOBS initiative and has enthusiastically accepted its responsibilities as stated in SF376 bill passed during the 2009 legislative session. Through the collaboration of the Iowa Utilities Board, Iowa Department of Economic Development and ITTC, a talented governing board is bringing together the interests of many public and private stakeholders to strengthen our telecommunications infrastructure and make broadband access a reality for every Iowan.

Iowa Communications Network Fiscal Year 2009 Annual Report

On behalf of the Iowa Telecommunications and Technology Commission (ITTC) overseeing the Iowa Communications Network, I am pleased to submit the Fiscal Year 2009 Annual Report. Throughout the report you will find stories and examples that demonstrate the many ways in which ICN video, voice, Internet, and data services have touched the lives of Iowans across our state. The ITTC strongly supports the IJOBS initiative and has enthusiastically accepted its responsibilities as stated in SF376 bill passed during the 2009 legislative session. Through the collaboration of the Iowa Utilities Board, Iowa Department of Economic Development and ITTC, a talented governing board is bringing together the interests of many public and private stakeholders to strengthen our telecommunications infrastructure and make broadband access a reality for every Iowan.

The database industry in Catalonia: a ten year overview

Reviews growth in database production in Catalonia (ASCII, videotext, CD-ROM) over the past decade, with particular attention to the level of development, classification of producers, distribution, users and language. Examines the principal problems affecting the Catalan context: the lack of an informationand documentation policy, deficiencies in distribution of databases, the special situation in telecommunications, insufficient financial resources and the lack of specialized personnel.

ICN Insider Newsletter, November 2010

This is a newsletter produced by the Department of Iowa Communication Network. This newsletter updates what is going on with the ICN through out the state of Iowa.

2009 Annual Report of the Iowa Utilities Board

The IUB Annual Report contains summaries for IUB dockets that were active during the calendar year as well as IUB background information, IUB work section highlights, descriptions of IUB court cases and participation in federal proceedings, listings of IUB assessments to jurisdictional utilities, and the IUB fiscal year budget.

ICN Insider Newsletter, December, 2010

This is a newsletter produced by the Department of Iowa Communication Network. This newsletter updates what is going on with the ICN through out the state of Iowa.

ICN Insider Newsletter, February 2011

This is a newsletter produced by the Department of Iowa Communication Network. This newsletter updates what is going on with the ICN through out the state of Iowa.

ICN Insider Newsletter, January 2011

This is a newsletter produced by the Department of Iowa Communication Network. This newsletter updates what is going on with the ICN through out the state of Iowa.

Access by Capacity and Peak-Load Pricing

Several European telecommunications regulatory agencies have recently introduced a fixed capacity charge (flat rate) to regulate access to the incumbent's network. The purpose of this paper is to show that the optimal capacity charge and the optimal access-minute charge analysed by Armstrong, Doyle, and Vickers (1996) have a similar structure and imply the same payment for the entrant. I extend the analysis tothe case where there is a competitor with market power. In this case, the optimalcapacity charge should be modified to avoid that the entrant cream-skims the market,fixing a longer or a shorter peak period than the optimal. Finally, I consider a multiproduct setting, where the effect of the product differentiation is exacerbated.

2010 Annual Report of the Iowa Utilities Board

The IUB Annual Report contains summaries for IUB dockets that were active during the calendar year as well as IUB background information, IUB work section highlights, descriptions of IUB court cases and participation in federal proceedings, listings of IUB assessments to jurisdictional utilities, and the IUB fiscal year budget.