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5850 Uppsatser om Computer science - distributed computing - Sida 47 av 390
Umgås på Internet eller på ett café? : ? en studie om Internetanvändningens sociala konsekvenser.
AbstractTitle: See each other on the Internet or on a café? A survey about social consequences of Internet usage. (Umgås på Internet eller på ett café? ? en studie om Internetanvändningens sociala konsekvenser.)Number of pages: 34 (including enclosures).Author: Carolin Johansson.Tutor: Else Nygren.Course: Media and Communication Studies C.Period: Fall 2007.University: Division of Media and Communication, Department of Information Science, Uppsala University.Purpose/Aim: The purpose is to get increased knowledge about the social consequences that may come up when young people at the age of 16-20 are using the Internet.Material/Method: The material consists of a questionnaire that I made with questions about Internet usage that 84 young people from five classes (from three different upper secondary schools) answered.Main results: To have access to a computer and Internet and the fact that broadband is more inexpensive now than before leads to an increased usage of the Internet. I found out that chatting, music/movies, searching for information and using the Internet for entertainment is what most of the participants spent the most time on while using the Internet.
DNS prestanda
Use of computers and computer networks is nowadays a part of everyday life. You do not use them only at home when you sit at you computer, but you can use them all the time everywhere. This can involve everything from surf to any website when you are at home, to checking your email on your mobile when you are on your way to work. Most people do not think about how it really works when they try to access a web page by typing the address into their browser, but something that most people probably notice is how long it can sometimes take to access a web page.All items which are directly connected to the IP network have a unique IP address that is used to make it possible to communicate. The IP address is either a period separated sequence of digits representing 32 bits or a colon separated sequence of digits representing 128 bits, depending on whether the address is an IPv4 or IPv6 address.
Normalvetenskapen och dess förutsättningar : Två grader av relativism? - En jämförelse av Thomas Kuhns och Richard Rortys kunskapsteori.
All since Thomas Kuhn?s strongly influential The Structure of Scientific Revolutions the Philosophy of Science and ?even more so ?the Social Sciences have contained a greater amount of theories that could be described as more or less relativistic, meaning that the standards of justification or truth thereafter more often were said to be relative to language, culture, or biological makeup. One of the more elaborate ways of developing Thomas Kuhn?s theories in a more relativistic direction ismade by the philosopher Richard Rorty. Rorty, mainly a supporter of Thomas Kuhn, is also a philosopher who has been seen as a main exponent of a so called Postmodern philosophy.My intention in this thesis is to evaluate whether Kuhn's and Rorty's theories of science and knowledge could be regarded as relativism, in respects of their view of incommensurability, rational argumentation, and of their position vis-á-vis the more conventional picture of scientific knowledge and truth.
C, C++, Java och Python : En prestandajämförelse mellan fyra programmeringsspråk
In today?s society computers are getting a much more important role. To get a computer to work as intended it has to be programmed. A computer program is written with programming languages. There is an abundance of programming languages available today and there are many differences and similarities between them.
2001: ett e-äventyr : Implementering av e-böcker i det digitala biblioteket
Rapid development in the realms of electronic publishing has had a profound impact on information services in general and the academic library in particular. Since mid 1990´s an increasingly number of scholarly journals and other information resources have been made available electronically. Electronic books are the newest electronic service in the hybrid library and can be seen as the third wave in the digital library. Although electronic books have for a long time existed as electronic texts such as digitalized classics or other texts in the public domain, it is not until recently that e-books have been distributed and packaged in a commercial form. As more e-book models are being developed, libraries are being forced to take e-books into consideration when planning their information services.The aim of this master thesis is to describe the first stage of implementation of the new electronic media, the electronic book or e-book, in Swedish academic libraries.
Mot en delad framtid? : Mendeley som exempel på vetenskaplig kommunikation online
The last few years have been characterised by increasing online communication and the emergence of social media, made possible by Web 2.0. In society as well as in research, social media is used for knowledge produc- tion and networking. One example of this is Mendeley, a social reference management tool. With answers from users all over the world, this study investigates the use of Mendeley, if the respondents use other social media and if all of this affects scientific communication. The aim is also to study what the respondents think about the future of scientific communication and if this can be related to current tendencies.The theoretic framework for this study is based on Leah Lievrouws research on the Cycle of Scientific Communication and the relationship between the ?Little Science 2.0?-scenario and the ?Big Science Retrench- ment?-scenario.A qualitative web based survey was conducted (41 answers) and complemented with an interview with a professor in environmental sciences.
We've both said things you're going to regret : En undersökning av dagspressens framställning av TV-och datorspel perioden 1995 till 2012
The use of computer and video games has increased immensely over the past few decades and today a majority of the Swedish population enjoys them on a daily basis. With such a large number of frequent users, the media reporting on the subject of games becomes interesting and important. How are games represented in the media, and has there been any change in the way they are portrayed as their popularity has grown? The aim of this study is to determine if and how the portrayal of computer and video games in Swedish newspapers has changed during the period 1995?2012. The study was conducted with the use of quantitative content analysis and the empirical data was collected from the two most widespread newspapers in Sweden ? DN and Aftonbladet.
Klimatkabinett : Komponenter och konstruktion
This report describes the construction of a climate-cabinet for testing of HV-cards (High Voltage) produced at VG Scienta. The main part of the report describes all the different components of the cabinet. The most important parts are a PID regulator from Eurotherm model 2408, a solid state contactor (SSC), a thermocouple, a finned resistor from DBK and different fans. The report even includes the connection between components by cable wiring, isolation, grounding, fuses and shaping of metal goods.As the cabinet also communicates with a computer, the report includes the solution of the data communication using the software iTools from Eurotherm. The communication part includes information about a converter that converts EIA422 to USB.The cabinet was produced at a company, called VG Scienta, in Uppsala during the spring 2010.
Företagets ansikte utåt : En studie som belyser varumärkespositioneringens betydelse på outdoormarknaden
Secondary schools have for decades debated whether they promote social reproduction which is considered to generate the homogeneous student compositions. The gap between the academic programs and vocational education programs is considered to increase. What in recent years has appeared in research is that the gap is increasing most tend to be in the specific academic program, particularly in science. This paper's intention is to describe the science program at a local level and the pupils who were admitted to the science program autumn 2009 on the basis of an educational sociological perspective. The survey consisted of a census in which all students were given the opportunity to answer a questionnaire.
Detektering av sprickor i vägytor med hjälp av Datorseende
This thesis describes new methods for automatic crack detection in pavements. Cracks in pavements can be used as an early indication for the need of reparation.Automatic crack detection is preferable compared to manual inventory; the repeatability can be better, the inventory can be done at a higher speed and can be done without interruption of the traffic.The automatic and semi-automatic crack detection systems that exist today use Image Analysis methods. There are today powerful methods available in the area of Computer Vision. These methods work in higher dimensions with greater complexity and generate measures of local signal properties, while Image Analyses methods for crack detection use morphological operations on binary images.Methods for digitalizing video data on VHS-cassettes and stitching images from nearby frames have been developed.Four methods for crack detection have been evaluated, and two of them have been used to form a crack detection and classification program implemented in the calculation program Matlab.One image set was used during the implementation and another image set was used for validation. The crack detection system did perform correct detection on 99.2 percent when analysing the images which were used during implementation.
Utvärdering och rekommendation av uppföljningsprogram för flygplanunderhåll : för Täby Air Maintenance
By today?s date there are a lot of companies that are in great need of restructuring their paperwork in a more organized way. This can be excellent arranged with the help of properly constructed computer software. The aviation industry is no exception, but actually a good example of this. Täby Air Maintenance (TAM) is a company which is situated in Örebro.
Inköp av cloud-tjänsten Software as a Service : En studie om hur beslutsprocessen gått till vid inköp av cloud-tjänsten på två små IT-företag
Studien avser att beskriva om och hur faktorernakärnkompetens, osäkerhet, nyttoaspekter och kontroll/flexibilitet påverkat besluten vid inköp av cloud-tjänsten SaaS. Uppsatsen är en kvalitativ studie som är baserad på semistruktuerade intervjuer med nyckelpersoner på två små IT-företag samt vetenskapliga artiklar och litteratur inom ämnesområdet. Studiens slutsats är att de båda företagen påverkats av några eller alla faktorer vid inköpen av cloud-tjänsten. Faktorn nyttoaspekter påverkade båda företagens inköpsbeslut i hög grad. Faktorerna osäkerhet och kontroll/flexibilitet påverkade inte alls inköpsbeslutet hos det ena företaget medan de till stor del påverkade inköpsbeslutet hos det andra företaget. Faktorn kärnverksamhet påverkade det ena företagets inköpsbeslut till en viss del och det andra företaget till en stor del..
Internet i Kina : digital konvergens mot den femte moderniseringen
Denna uppsats beskriver Internet i Kina i allmänhet, från dess politiska bakgrundsmotiv och inledande grunder till dess nuvarande tillstånd av dynamisk ekonomisk infrastruktur och medel för folkligt politiskt inflytande. Tonvikten läggs vid för Kina unika aspekter, såsom partiinflytande över informationsutbytet, folkliga attityder till fildelning i ett samhälle som bara nyligen erkänt privat ägande samt effekter av kulturkrockar på nätet mellan västlig och kinesisk civilisation. Det argumenteras för att Kina i en framtid kommer att ha ett stort inflytande över cybermarknader och i beslutsfattande om Internets framtida utveckling, genom tekniska, ekonomiska och politiska medel. Slutligen resoneras att Internet i Kina har förändrat och kommer att förändra folkets mentalitet, så att det anammar västerländska tankemönster i liknande utsträckning som i angränsande länder, vilket banar väg för politisk pluralism..
Filmberättandets kraft : om att vara pedagog och konstnärlig ledare i skolan
This essay follows a Media Teacher in her work as a coordinator and an artistic leader for a European project called Legalopoli concerning laws and ethics in a senior level school for 13-16 year-olds in Mora, Sweden. The students write film stories about how their characters have to make choices in ethical dilemma situations. Then the learners create interactive computer games together through practical film work. At the same time we can see how the educator also gets into difficult ethical situations, when she is working with the students. This forces her to self-reflection.
En studie om HTML och XML - Blir det en förbättrad struktur i dokumenten med XML jämfört med HTML?
Problemområde: I dag utvecklas nästan alla webbsidor på Internet med
märkspråket HTML. XML är ett nytt märkspråk och används bland annat för att
utveckla webbsidor. Uppsatsen undersöker skillnader mellan de båda märkspråkens
grundläggande dokumentstruktur. Den grundläggande dokumentstrukturen för HTML
är HTML, HEAD och BODY samt för XML är den Prolog, Rot and Epilog.
Hypotes: Uppsatsen baseras på hypotesen -?Vid användning av XML blir det en
förbättrad struktur på informationen i dokumenten?.
Genomförandet: För att undersöka hypotesen har två kriterier definierats och
testats; Märkspråkens struktur och Sökbarheten i märkspråkens struktur.