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14770 Uppsatser om Wireless data-communication - Sida 42 av 985

Gulliver Simulation - En systemarkitektur f or n atverkssimulering av

Nowadays, a lot of resources are spent on developing systems that will make it possible forvehicles to act autonomously, and make them more effective. One of the projects that isworking on this is the Gulliver Project. Gulliver has constructed a number of miniaturevehicles equipped with various sensors, to use as a physical testbed for autonomousdriving. One big disadvantage with this method is the long iteration time that occursduring the development and testing of a new software.This project has improved this process by developing a system architecture of a virtualtestbed where it is possible to simulate autonomus vehicles that communicates throughany type of wireless network. The testbed has made it possible to simulate autonomusvehicle systems that with a reasonable margin of error, acts like the system would actin a physical test.

Body Coupled Communication: Ändring av prototypkort

Kommunikation genom att använda människokroppen som  överföringsmedium, med kapacitiv koppling mellan hud och sensor, har varit ett pågående forskningsområde för PAN (Personal Area Network) sedan Thomas Guthrie Zimmerman introducerade tekniken 1995. Anledningen till detta är att undersöka fördelar och användningsområden för en kommunikationsmetod som ej sänder ut RF-signaler och därmed minska risken för obehörig avlyssning.Denna rapport beskriver ett examensarbete som undersöker möjligheten till eliminering av USB- till UART-konverterare på Microchip BodyCom genom mjukvaru-USB-stack och kombinera denna med Body Coupled Communication funktionalitet i en gemensam mikrokontroller. Vidare studeras om programkoden i Body Coupled Communication sändare kan modifieras för att utöka funktionaliteten.Det var givet i förutsättningarna att mikrokontroller från Microchip skulle användas, vidare var lågt pris respektive låg strömförbrukning viktigt, särskilt för sändaren. Metoden för att uppnå detta har varit användning av Microchip BodyCom development kit tillsammans med Microchip USB low pin count development kit och Microchip USB firmwareframework.Resultatet blev att USB- till UART-omvandlare kunde integreras med Microchip BodyCom genom att använda mjukvaru-USB-stack och en modifierad programkod för BodyCom i en gemensam mikrokontroller.Endast fantasin sätter gränsen för vad Body Coupled Communication kan användas till. Det skulle t.ex.

Designerrollen i en webbdesignprocess

This study investigates if, and in that case, how design theory is applied in practice in the web development field. Prior research has focused on methods used in the web development field. We wanted to study the designers role in a web design process by comparing existing designer roles with design theory literature. We did qualitative interviews with two practitioners at two different communication agencies in northern Sweden. Based on our qualitative data and literature review we have concluded that a designer has to devote a lot of energy on requirements engineering in order to develop a clear understanding of the design situation..

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.

Sjuksköterskans kommunikation med patienter som vårdas med respirator

Bakgrund: Kommunikation med patienter som vårdas med respirator är en stor del av omvårdnaden för intensivvårdssjuksköterskan. Otillräcklig kommunikation mellan sjuksköterska och patient kan leda till otrygghet och stress hos patienten. Syfte: Studiens syfte är att beskriva hur intensivvårdssjuksköterskor kommunicerar med patienter som vårdas med respirator, vilka möjligheter och hinder som finns samt om sjuksköterskans erfarenhet har betydelse.Metod: En kvantitativ ansats valdes och data till pilotstudien insamlades med hjälp av en enkät. Resultat: Sjuksköterskorna i studien ansåg inte att det är svårt att kommunicera med patienter som vårdas med respirator. Större delen av sjuksköterskorna använde sig av kroppsspråk, ögonkontakt och beröring som kommunikationsmetoder.

Aktörsanalys av svensk skogspolitik

Title: Nätdejting för olika åldrar (Netdating for different ages)Author: Henri NekmouchePurpose: The purpose of this study is to investigate what influence the medium Internethas had on building up relationships between people who have dated online, and tocompare two different age groups.Method/Material: In this study the author has conducted personal interviews with sixpeople who all have experienced Internet dating, and had their first contact with agirlfriend/boyfriend online. The questions asked were designed to help answering thepurpose of the study.Main results: This study shows that in general there is a positive view of Internet datingamong both groups. They appreciate the opportunities it provides, as they get to knowthe other persons personality first. Even so, it should be noted that they still tend to be abit ashamed to talk about Internet dating, and some don?t want to be associated with it.The communication pattern tend to be pretty much the same among both groups.

Utveckling av en ytmonterad fördelningsmätare som underlag för individuell debitering av vattenförbrukning i fastigheter

The master thesis, conducted at Metrima AB, concerns the development of a non-intrusivedistribution meter as a basis for individual tap water billing in apartments.The project is conducted in response to the market interest in individual tap water billing inapartments as an answer to environmental concerns regarding water consumption. Due to thehigh installation cost of traditional water meters, a new method of determining waterconsumption, without having to cut water pipes, is proposed.The proposed method distributes the total water consumption for an apartment complex toindividual apartments according to distribution meters, measuring water run-time, in eachapartment. The water run-time is estimated by measuring the water pipe?s outward vibrationsand temperature changes.A test environment was established and a prototype built, using a tilt- and vibration sensor forvibration sensing and a precision temperature sensor to measure temperature changes. As bothsensors work well in the test environment, further testing was done in 3 apartments for aduration of 5 days.

Åtgärdsprogram för elever med svenska som andraspråk : En jämförande studie av fyra elevers åtgärdsprogram i två skolor

One of the essential needs of human beings is to be involved in a social context. The intention of this study was to see if the opportunity to have an iPod Touch, could make it possible for students with literacy difficulties to participate in the regular classes and if the implementation of iPod Touch in the school setting would result in informal learning outside the school. In this case study two pupils with literacy difficulties have been using an iPod Touch in their daily school activity. The pupils as well as their teachers have been interviewed about their experiences of implementing iPod Touch as a tool in the regular classroom teatching. The results indicate that iPod Touch can help students to be in inclusive education and that they use the iPod Touch outside school.

Mobiltelefonen som social artefakt inom familjen : en studie med föräldrarna i fokus

Studies of modern communication media such as Cell Phones and so called Instant Messengers are popular today. This study focused on these modern techniques, focused on parents as a target group and on what is important for them in everyday communication.By exploratory using three focus groups it became clear that the children, and the link to them was the absolute most important thing for the parents. It became clear that this link to a great extent today exists through the mobile phone.In a following study a Mobile Instant Messenger called My Friends was introduced. It was used by two families during two weeks to see how it would change the communication within the family. The focus was to see how problems with availability were handled, it turned out that:My friends had a more obvious way of indicating availability than the Cell Phone had.

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.

Datakvalitet : En fallstudie om kvaliteten i SJ:s underhållssystem

SJ is a government-owned passenger train operator in Sweden. SJ currently uses asystem called Ford for control and monitoring of maintenance. Technical andorganizational factors have given Ford the character of a monolithic system withoutflexibility and conditions to meet SJ's increased requirements.The main purpose of this master's thesis is to investigate how data quality can bedefined at SJ and to examine the data quality in Ford. This will give SJ an indication ofwhat their quality efforts should focus on in the future.The technical data quality parameters found are: accuracy, timeliness, completenessand consistency. The user centred data quality parameters are: accessibility,understandability and reliability.

Inbäddade kartor för geografiska presentationer på webbsidor

This is a survey of different techniques that may be used for embedding geographicdata into web pages. Different models of GIS communication are examined and a testsubject in the form of an application is implemented and evaluated.The test application (?StudentKarta? eng. ?Student Map?) lets students submit theirresidential data and shows their position as pins on an embedded Map.An expire date is used to let the pins fade away and disappear.The application uses the popular Google map engines to display the geographicalpresentations.

Klimat i förändring? : En studie om det kommunikativa klimatets förändring

AbstractTitle: A changing climate? A study on the changes of the communicativeclimate. Klimat i förändring? En studie om det kommunikativaklimatets förändring.Author: Anne BjörckAim: The aim of this essay is to study changes in the area of the communicative climate and link that to Karl Weicks thoughts on communication and change. Karl Weick is famous for his contribution to organizational theories and he is still very well used around the world and that is the main reason to why his theory is served as a base in this essay.Method: The essay has a theoretical base with elements of qualitative explorative research method.

Förväntningar på ett intranät : åtta stiftsinformatörers syn på kommunikation i Svenska kyrkan

Purpose/Aim: The aim of this essay is to study the expectations towards the launch of an intranet in a large organisation.Material/Method: A qualitative method has been used to fulfil the purpose of this essay. Indepth interviews have been made with eight informants of dioceses.Main Results: The study shows that the eight informants of dioceses all are positive towards the launch of an intranet in the organisation. They believe that it in time will lead to a more effective intern communication with less channels and more efficient messages..

Trådlösa nät och 3G för funktionshindrade

Genom hela arbetet har enkelhet och användbarhet varit ledorden. Detta för att man ska kunna implementera tjänster för en relativt liten målgrupp utan att behöva göra större investeringar. I linje med detta har möjligheter för att kunna erbjuda tjänsten till en större målgrupp och därmed få ned kostnaden per användare eftersökts.Rapporten börjar med en studie av 3G, WLAN och Bluetooth för att läsaren ska få en grund i de tekniker på vilka tjänsterna skulle kunna implementeras. Sedan diskuteras dagens tjänster och vilka önskemål om tjänster som framkommit från diskussioner med olika parter. Slutligen exemplifieras ett antal tjänster som skulle kunna tillämpas på dagens tekniker.Efter att ha läst rapporten skall läsaren ha fått en uppfattning hur mobila tjänster med hög överföringshastighet bör utformas för att underlätta kommunikation för funktionshindrade..

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