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7853 Uppsatser om Computer and systems science - Sida 19 av 524
Datasäkerhet för hemdatorer. Brandväggar för privatpersoner.
I arbetet med denna uppsats, har vi undersökt om brandväggar håller vad de
lovar och om de i så fall ger full datasäkerhet. Vårt syfte är att, ur
hemmaanvändarens perspektiv undersöka vad datasäkerhet innebär, hur hotbilden
vid Internet-användning i hemmet ser ut och vad personliga brandväggar kan
erbjuda för skydd. För att ta reda på detta gjorde vi följande
frågeställningar:
Vad är/innebär datasäkerhet?
Vad skyddar en brandvägg mot?
Vad skyddar brandväggen inte mot?
För att besvara våra frågor har vi använt oss av tre metoder; litteraturstudie,
test av tre stycken brandväggar och intervjuer med två personer med kunskaper
inom datasäkerhet.
Vi har med hjälp av metoderna kommit fram till att beroende på att en av de tre
undersökta brandväggarna släppte igenom en trojan, trots att denna brandvägg
sade sig stoppa sådana, så håller inte alla brandväggar vad de lovar. På grund
av många användares omedvetenhet om farorna eller brist på insikt om sin egen
utsatthet men även på grund av att hotbilden är så föränderlig, är det svårt,
för att inte säga omöjligt att uppnå full datasäkerhet.
Det nya verktyget : En undersökning av förskollärares upplevelser med surfplattan
The aim of this thesis is to study preschool-teachers? experiences from using the computertablet as a tool for learning and teaching, in order to gain knowledge of how the integrationalprocess of information and communications technology (ICT) in preschool has progressedsince its instatement. The background that caused interest to make this study was the rapidprogression of the use of ICT-tools in childrens? everyday lives and the troubles that havesurrounded the process of integrating these tools into preschool-practices. The theoreticalbasis for the analysis of the research lies within the socio-cultural perspective.
Operatörsoberoende SMS-leverans med designmönstret Bridge
When different type of programs are developed one wants to make these
adjustable to future changes and requirements. It must be done a good design of
the program from the beginning to make it possible to continue development of
it without having to redo big parts of it to high costs. In the area of object
orientation there are design pattern, which can be used to design systems that
can be adjusted to new changes in an easier way. I have in this thesis chosen
to take a closer look at how to design a program that sends SMS to cell phones
through a system of an operator. One requirement on the program is that it has
to be possible to change what operator to send though in an easy way.
En-till-en på gymnasiet: En kvalitativ studie kring vad elever i behov av stöd anser att datorn har stöttat dem med i skolan angående språksvårigheter
The purpose of this study was to examine what students themselves think about using computers in school. The study was conducted in a school in central Sweden. The students in focus were students with reading and writing difficulties, dyslexia or language difficulties such as an other native language. A total of eight students were interviewed. The interviews were analyzed using thematic analysis.
Personanpassad informationsportal (PIP)
Den explosivt ökande mängden information som finns
tillgänglig på Internet har även sina avigsidor. Att hitta
meningsfull information och kunskap på Internet idag
blir allt svårare. Behovet av verktyg som kan hjälpa
individer och företag att ta fram värdefull information,
speciellt tidskritisk sådan på ett effektivt sätt, är och
kommer att bli mycket stort. Likaså kommer behovet
av att komma åt denna information, oberoende av tid
och plats att vara stort och bli allt större i takt med den
ständigt accelererande utvecklingstakten.
Vi har försökt att belysa hypotesens komplexitet och
visa på det faktum att inte bara en utan många
beståndsdelar spelar in vid skapandet av en
personanpassad informationsportal. Arbetet har grundat
sig på att identifiera de krav som skulle kunna ställas på
grundläggande funktioner.
Lärrollen i en föränderlig tid : The teacher´s role in time of change
Aim: The aim of this essay is to study the external communication of Science Park Jönköping, how they want students in Jönköping to perceive them. Further we would like to compare thatinformation with how students in Jönköping actually perceive Science Park Jönköping. Do the both pictures agree?Method/Material: Together with literature studies, a qualitive method has been used.Two interviews with the managers of Science Park, and five focusgroups with students havebeen conducted.Main Results: The main result from the focusgroup interviews shows that the students perceived image of Science Park correlates in many ways with Science Parks profile. But the study also shows that Science Park do not apply many of the relevant theories that would benefit their marketing..
Utvecklingen av mekatronikämnet på KTH : ? anställningsbarhet, forskning och innovation
This thesis examines history of the subject of mechatronics and innovation. The main reason tostudy mechatronics from a historical point of view is that it has never been done to a greater extent before. An overview is justified because various definitions have been used over the decades, but nowadays the subject has become more established. Focus in this thesis is mainly on development of the subject of mechatronics at Royal Institute of Technology in Stockholm. Innovation is the other aspect of this thesis.
E-BUSINESS, WHAT IS IT GOOD FOR: AN EXPLANATORY STUDY OF FIVE COMPANIES? E-BUSINESS SOLUTIONS
The notion of firms interacting with technology is not new; these types of systems were already in place in the mid eighties. E-business users worked with connections between their inbound logistics and procurement systems, and suppliers? order-entry systems. When these connections were described for the first time the vertical links between two, or more, value chains in a value system received more attention in firm strategy. The design of the linkages in the value system was said to be a product of the need for coordination and relative bargaining power.
Science fiction och fantasy: en undersökning av svenska bokförlags utgivning och fyra folkbiblioteks inköp under perioden 1989 till 1994
Publication of science fiction has a tradition in Sweden. Adult-fantasy does not. In recentyears, the 1980's, Swedish publishers have realised how profitable fantasy is. Of the totalpublication of the two genres between 1989 and 1994, 54% was science fiction and 46%was fantasy. The reason for this even balance is that fantasy-books get reprinted more frequentlythan science fiction-books.
Analys av pop-ups genererade från adware
This thesis is about adware, which is very popular today. The adwares are used
to, among other things, down- and upload files from other users on the
Internet. One thing that most users of such programs are not aware of is that
many of the adwares contain spyware. These spywares install themselves
simultaneously with the adwares. Two of the spyware features is to generate
pop-ups in the web browser and to direct advertisment from the users web
habits.
"Jag ser det som ett smörgåsbord" : En studie om två olika läs- och skrivutvecklingsmetoder
In this study I have compared two different development methods of reading and writing. I have done this by interviewing five first grade teachers in elementary schools and it is based on qualitative research interviews. The aim of the study was to immerse myself in which methods these five teachers describe that they have used. They got to describe how they work and how they have tought the students to read and write. I have investigated if the teachers think that the computer is a good tool. The investigation also shows if the teachers believe that the students´ writing skills deteriorate if they can use the keyboard instead. I came to the conclusion that four of the teachers used Arne Trageton´s method (2005) which means that the students learn how to write by using to computer.
Windows, RedHat och IPv6 : ett test!
With the huge amount of computers connected to the Internet the IP-addresses are starting to run out. The Internet Engineering Task Force, IETF, have decided that it is about time to exchange the old 32 bits Internet protocol, Ipv4, to a more modern 128 bits protocol called Ipv6. This thesis explores the possibility to install Ipv6 in different operating systems. By testing various operating systems and by set up criteria compare them to each other we give the reader a picture of how the installation is done. We also show which operating systems to prefer if you want to use IPv6.
Framtagande av kravspecifikation för standardsystem
There are several methods and models within the areas of software engineering
on how to proceed during a software development process. For each of these
methods and models there are benefits and drawbacks, depending on how you
choose to look at them. A difference of principle between the different models
is that they either advocate iterative development or not.
In parts of software engineering one makes use of different methods depending
on which is most fitting in a specific situation. There are several methods on
how to recieve more qualitative data from the end-users during the requirement
collection, but the reappearing pattern is still user centric participation,
which means that the user participates more actively in part of or the entire
development process.
Bedömningsgrunder och reningskrav för avloppsreningsverk, 25-2000 pe, i Laholms kommun
The aim of this project was to look into ten small sewer systems in the municipality of Laholm, in Sweden, in order to work out common assessment grounds for them. The sizes of the systems for purification of wastewater were within the range of 25 to 2000 population equivalents. Our method was to study literature, the laws and regulations applicable and the files at the municipality. The conclusion is that every sewer system is different and every situation is unique. We concluded that based on laws and assessment grounds sewer systems equal in size and pollution load ought to have similar demands attached to them.
Kommunicera rätt! - En studie om kommunikation mellan systemutvecklare med kundkontakt och kund
Titel:
Kommunicera rätt! ? En studie om kommunikation mellan systemutvecklare med
kundkontakt och kund.
Författare:
Peter Johansson
Oskar Hanson
Handledare:
Johanna Törnquist
Examinator:
Guohua Bai
Problemområde:
Anledningen till detta examensarbete är att problem som kan uppstå vid
systemutvecklingsprojekt vanligtvis har sin grund i kommunikationen mellan
systemutvecklare med kundkontakt och dess kunder. Exempelvis hör en
systemutvecklingsgrupp och ett bageri till två vitt skilda yrkesområden och
därmed pratar de ?olika språk?, vidare kan det skapas semantiskt brus i
kommunikationskanalen som i slutändan kan leda till en felaktig
kravspecifikation och de verkliga förändringsbehoven förblir oupptäckta.
Hypotes:
Examensarbetet baseras på hypotesen: ?Semantiskt brus[1] i
kommunikationskanalen[2], otillräcklig negativ feedback[3] från sändare[4] och
mottagare[5] och svårighet att hitta rätt nivå på samtalet med hjälp av
kodning[6] och avkodning[7] ger upphov till en felaktig bild av kundens
verkliga förändringsbehov[8] .?
Slutsats:
Alla delar ur Shannons kommunikationsmodell tillsammans med cybernetikens
negativa feedback påverkar resultatet vid framtagande av kravspecifikation.
Delar som både teori och respondenter tar upp är att som konsult måste denne
?kunna tala kundens språk?, hitta rätt nivå på samtalet, ge och ta negativ
feedback samt undvika semantiskt brus i kommunikationskanalen.