Este trabalho de pesquisa apresenta um protótipo de servidor Web distribuído com diferenciação de serviços baseado em QoS relativa e absoluta. São implementados e comparados diferentes algoritmos de escalonamento. Um dos algoritmos avaliados é o EBS. O objetivo é transpor a teoria da política para o mundo real, e comparar o seu comportamento com os resultados das simulações, utilizando o tempo de resposta como medida de desempenho. Além do EBS, outros algoritmos são avaliados, tais como, Round-Roubin e Weighted Round Robin / This work presents a prototype of a distributed Web server with service differentiation based on relative and absolute QoS. Are compared different schedule algorithms. One of the policies to be evaluated is the EBS. The goal is to implement the policy theory to the real world, comparing their behavior with the simulation results, using the response time as a performance measure. In addition to the EBS, others policies are evaluated, such as Round-Roubin and Weight Round Robin

<p>This project was aimed at critically analyzing the use of web geographical information system (GIS) applications in local government, and problems associated with the design, development, and implementation of web mapping applications in the case study of the municipality of Gävle, Sweden. The project included a scientific and thorough analysis of options for developing web GIS applications by using ESRI GIS software technologies. During this research project, the ESRI GIS software tools and packages were used to perform a comprehensive system analysis of the proposed web mapping application, to gain a better understanding of the available methods of map document and web GIS application performance optimization, and finally to develop a web mapping application prototype for the web map of the municipality of Gävle. The research results include the guidelines for preparing map documents to be published, optimizing ESRI ArcGIS Server web mapping applications performance, and some possible ways of customizing user tools and a user interface by using the Microsoft Visual Studio framework. This study proves that ESRI web-based GIS products provide viable tools for web mapping application design, development, and customization. The developed ArcGIS Server based web mapping application can be optionally improved and then be used instead of existing ESRI ArcIMS-based application in the municipality of Gävle.</p>

No description available.

<p>Jag har under en period motsvarande 10 veckor på heltid utvecklat ett grafiskt konfigurations-verktyg för konfiguration av ftp-servern ioFTPD [4]. ioFTPD är en relativt ny ftp-server för Windows som är resurssnål och högpresterande [4]. ioFTPD utvecklas av iniCom Networks [4] som även utvecklar den kända ftp-klienten FlashFXP [4].</p><p>Idén till att utveckla ett grafiskt konfigurationsprogram kom till eftersom det inte fanns några grafiska verktyg för vare sig konfiguration eller övervakning av servern. Eftersom det inte fanns något användarvänligt grafiskt konfigurationsverktyg var användaren tvungen att editera ioFTPD:s konfigurationsfil manuellt. Manuell editering av en så stor fil gör det lätt att införa fel.</p><p>Mina delmål var att skapa tre grafiska applikationer för att hjälpa till att konfigurera och övervaka ioFTPD-servern.</p><p>• Ett grafiskt konfigurationsverktyg</p><p>• Ett övervakningsprogram</p><p>• En vfs-editor för skapande och redigering av det virtuella filsystemet</p><p>Huvudmålet var att implementera det grafiska konfigurationsverktyget, vilket jag gjorde. Jag är nöjd med slutprodukten även om det finns detaljer som kan förbättras.</p><p>Under projektets gång har jag bland annat förbättrat mina kunskaper i C++ och Win32-programmering, samt att jag insett vikten av att göra en genomtänkt design innan man påbörjar implementationen.</p> / <p>I have, during a period of ten weeks, full time, developed a configuration utility, featuring a graphical user interface for the configuration of the ftp server ioFTPD [4]. ioFTPD is a relatively new high performance and resource efficient ftp daemon [4] for Windows. ioFTPD is developed by iniCom Networks [4], who also develop the popular ftp client FlashFXP. [4]</p><p>Because ioFTPD lacks graphical applications for the configuration and monitoring, the idea to develop a graphical configuration utility arose. Since there was no user friendly graphical configuration utility, the user manually had to edit ioFPTD's configuration file. Manually editing such a big file could easily result in error introduction.</p><p>My goals were to develop three graphical applications to aid in the configuration and monitoring of the ioFTDP server.</p><p>• A graphical configuration utility</p><p>• A monitoring application</p><p>• A vfs-editor to aid in the creation and editing of the virtual file system</p><p>The main goal was to implement the graphical configuration utility, which I did. I'm satisfied with the result even though there are details that could be improved.</p><p>During the project I have improved my knowledge with C++ and programming</p><p>with the Windows API. I've also realized the importance of doing a thoroughly thought through design before one starts the implementation.</p>

El desarrollo y las avances recientes de la tecnología de los ordenadores y de la tecnología de alta velocidad de redes han hecho posible que las aplicaciones de video bajo demanda estén conectadas a "shared-computing" servidores reemplazando los sistemas tradicionales donde cada aplicación tenía su propia máquina dedicada para servirla. La aplicación de video bajo demanda permite a los usuarios seleccionar de una lista de videos su película favorita y ver su reproducción a su gusto.Sin embargo, la aplicación de video bajo demanda se considera como una de las aplicaciones que debería soportar largos "video streams", que consumen muchos recursos como el anch de banda de red y I/O, a gran número de clientes. Por eso, el servidor de video debería asegurar los recursos necesarios para cada "stream" durante un periodo de tiempo largo (e.g. 7200 segundos) para que los clientes reproduzcan el video sin "jitter" y "starvation" en sus búferes.Esta tesis presenta el diseño y la implementación de un Servidor Proxy de Video (VPS) que puede proveer video bajo demanda interactiva. El VPS consiste de tres componentes (partes) principales. La primera parte es el Modulo de Control de Admisión (ACM) que recibe las peticiones de los clientes, negocia los recursos requeridos, y decide si la petición puede ser aceptada o rechazada basado en la disponibilidad de los recursos. La segunda parte es el Modulo de Manejo de los Recursos (RMM) que maneja los recursos del sistema como el CPU, la Memoria, la Red, y el Disco. Este consta de cuatro "brokers" que reservan a los recursos necesarios basado en una política predefinida. La tercera parte es el algoritmo CB_MDA "Credit_Based Media Delivery Algorithm" que controla y regula el flujo de los "streams" del video. La CB_MDA utiliza una combinación de canales unicast y "multicast" para transmitir el video. Los "streams" de "multicast" se inician para empezar a emitir el video desde el principio, mientras los canales unicast se usan para juntar los llegados tardes a un "stream multicast" apropiado. En la implementación, el CB_MDA detecta los momentos cuando el servidor tiene disponibilidad de recursos y les asigna a los usuarios apropiados para crear un trabajo en adelanto. / The recent advances and development of inexpensive computers and high speed networking technology have enabled the Video on Demand (VoD) application to connect to shared-computing servers, replacing the traditional computing environments where each application was having its own dedicated special purpose computing hardware. The VoD application enables the viewer to select, from a list of video files, his favourite video file and watch its reproduction at will.However, the VoD application is known as one of the applications that must provide long-lived video streams which consume high resources such as I/O and network bandwidth to a large number of clients. Therefore, a video server must secure the necessary resources for each stream during a long period of time (e.g. 7200 seconds) so that the clients can reproduce (play) the video data without witnessing jitter or starvation in their buffers.This thesis presents the design and implementation for a video proxy server (VPS) which can provide interactive video on demand. The VPS consists of three main parts. The first part is the Admission Control Module which receives the clients' requests, negotiates the required resources, and decides whether to accept or reject a client based on the available resources. The second part is the Resources Management Module which manages several shared resources such as the CPU, the Memory, the Network and the Disk It consists of four brokers that can reserve the necessary resources based on a predefined policy. The third part is the CB_MDA algorithm which is responsible for regulating the resources assignment and scheduling the video streams. The CB_MDA uses a combination of multicast and unicast channels for transmitting the video data. The multicast streams are initiated to start a video file from the beginning while the unicast channels are used to join the later arrivals to the appropriate multicast stream. In the implementation, the CB_MDA discovers the period of time when the server has plenty of resources an assigns them to appropriate clients in order to create work-ahead video data.The thesis further goes beyond the design of the VPS and presents a video client architecture that can synchronize with the server and work as a plug-in for producing the video data on different players such as MPEG-Berkely player, Xine.etc.

No description available.

This project was aimed at critically analyzing the use of web geographical information system (GIS) applications in local government, and problems associated with the design, development, and implementation of web mapping applications in the case study of the municipality of Gävle, Sweden. The project included a scientific and thorough analysis of options for developing web GIS applications by using ESRI GIS software technologies. During this research project, the ESRI GIS software tools and packages were used to perform a comprehensive system analysis of the proposed web mapping application, to gain a better understanding of the available methods of map document and web GIS application performance optimization, and finally to develop a web mapping application prototype for the web map of the municipality of Gävle. The research results include the guidelines for preparing map documents to be published, optimizing ESRI ArcGIS Server web mapping applications performance, and some possible ways of customizing user tools and a user interface by using the Microsoft Visual Studio framework. This study proves that ESRI web-based GIS products provide viable tools for web mapping application design, development, and customization. The developed ArcGIS Server based web mapping application can be optionally improved and then be used instead of existing ESRI ArcIMS-based application in the municipality of Gävle.

På Trafikverkets centrala funktion IT används Team Foundation Server 2010 för projekthantering. Utifrån detta system det är det möjligt att få fram mätetal som visar information om olika projekt. I denna fallstudie undersöks, med hjälp av intervjuer, vilka av dessa mätetal som kan användas för att visa en relevant bild av kvaliteten på ett systemutvecklingsprojekt. En modell presenteras för hur olika mätetal skulle kunna vägas samman för att fungera som en siffra på ett projekts kvalitet/hälsa. Till sist utvärderas om mätetal från TFS är tillräckliga för att ge en bra bild av kvaliteten på ett systemutvecklings-projekt. Studien kommer fram till att en sammanvägning är möjlig, men kan vara omfattande. Den visar även att mätetal från TFS är tillräckliga för att ge en övergripande bild av ett projekts hälsa.

The main objective for this degree project was to analyze the Endpoint Security Solutions developed by Cisco, Microsoft and a third minor company solution represented by InfoExpress. The different solutions proposed are Cisco Network Admission Control, Microsoft Network Access Protection and InfoExpress CyberGatekeeper. An explanation of each solution functioning is proposed as well as an analysis of the differences between those solutions. This thesis work also proposes a tutorial for the installation of Cisco Network Admission Control for an easier implementation. The research was done by reading articles on the internet and by experimenting the Cisco Network Admission Control solution. My background knowledge about Cisco routing and ACL was also used. Based on the actual analysis done in this thesis, a conclusion was drawn that all existing solutions are not yet ready for large-scale use in corporate networks. Moreover all solutions are proprietary and incompatible. The future possible standard for Endpoint solution might be driven by Cisco and Microsoft and a rude competition begins between those two giants.

Denna rapport beskriver det arbete vi gjorde hos Ninetech i Karlstad. Målet med vårtarbete var att skapa en applikation som hämtar information rörande resultat av automatiskabyggen i pågående projekt. Sammanställningen av olika projekt skulle visas löpande. Vårtarbete kan beskrivas som två delar, en praktisk och en teoretisk del. Den praktiska delenbestod av att skapa en applikation som visar status på de olika projekt som Ninetech förtillfället arbetar med. Denna applikation är tänkt att köras dagligen på en skärm synlig förpersonalen. Skärmen är också tänkt att visa gästande kunder statusen på deras projekt.Applikationen visar bl.a. information om tester som körs på de olika projekten.I den teoretiska delen skapades ett dokument som Ninetech kan använda för att introducerasin personal till att arbeta med automatiska tester. / This report describes the work we did at Ninetech in Karlstad. The purpose of our workwas to create an application that collects information about the results of automated builds inongoing projects. The combined information of projects should be presented continuously.Our work can be described as two parts, one practical and one theoretical part. Thepractical part consisted of creating an application that shows the status of Ninetechs currentprojects. This application is supposed to run daily on a screen viewable for the employees.The screen will also show visiting customers the status of their project. The application showsinformation about tests in the different projects among other information.In the theoretical section a document was created. This document can later be used byNinetech to introduce their personnel on how to work with automated tests.