Near Field Communication (NFC) is a short range wireless communication technology that enables data exchange between devices. NFC is used in many different areas, from subway tickets to authentication systems. This paper presents possible security threats to Near Field Communication and documented attacks that have been used to target various NFC protocols. Weaknesses in different NFC protocols will be presented and suggestions on how to counter certain weaknesses will be discussed. This survey will be valuable for companies interested in protecting their data when using or planning to use NFC systems..

Idag väljer många företag och kommuner att placera data i molnet istället för på en lokal server, detta medför nya problem som tidigare inte varit aktuella. Datainspektionen har påpekat brister i hur två kommuner använder molntjänster för att lagra personlig data då de ställer sig tveksamma till molnleverantörernas hantering av data samt insynen till molnleverantörerena. I detta arbete kommer det undersökas hur den svenska personuppgiftslagen fungerar när data läggs ut i en molntjänst. Resultatet av uppsatsen kommer även visa på de olika säkerhetshoten som finns i molnet och se vad säkerhetsexperter säger för att ta reda på om kommuner och företag är medvetna om och uppmärksammar samma hot. För att ta reda på detta har intervjuer genomförts med en svensk molnleverantör, företag som utvecklar tjänster mot molnet, privatpersoner som nyttjar molnet och experter inom säkerhet från Blekinge Tekniska Högskola, BTH. Resultatet av studien visar att det är svårt att se om en amerikansk leverantör uppfyller de svenska lagarna för personuppgifter, det visar också att det är teoretiskt möjligt att anlita en svensk leverantör och uppfylla lagen. Det har även visat sig att den största oron gällande molnet är bristen på kontroll av data..

There are many barriers and obstacles that need to be removed to make the urban environment more accessible for people with disabilities. There are currently no adequate tools for urban planners to assess and address these obstacles. Geographical Information Systems (GIS) provide powerful methods for the visualization and analysis of spatial data, including the kind of data important in studies of accessibility. This study suggests a method urban planners can use to identify accessibility obstacles and to propose future actions to fix them.A literature review was conducted to find out what has been done and what is new regarding the accessibility issues. Different methods were evaluated which in turn led to the construction of a multi-step analytical strategy.

The aim of this project was to quantify the total sleep time in modern dairy cows during24-hour periods and to investigate whether the total amount of sleep as well as timespent in different sleep stages varies between the dry period, early- and peak lactation.The distribution of sleep time between night and day was also examined. Furthermore,correlations between sleep and lying time, fluctuations in body temperature and heartbeat were included in the aim. Eight dairy cows of the Swedish Red breed were used inthis study, which was carried out between June and September 2010. In order toquantify sleep non-invasive electrophysiological recordings were performed.Simultaneously with collecting sleep data, body position and body temperature werealso recorded. No heart rate data was obtained due to difficulties of maintainingelectrodes for heart beat measurements attached to the skin.

This bachelor thesis aims to explore the public?s personal connection and attachment to place, as well as their perception of changes in the built environment that has occurred in close proximity to the area. Based upon a questionnaire carried out in a public square in Gothenburg, namely J?rntorget, the study examines the impact of the construction of two high-rise buildings that was initiated roughly five years ago adjacent to the square. The essays theoretical framework is based on the concept sense of place, a concept which derives from the discipline of Geography. Sense of place encompasses the relationship between people and spatial settings, which includes e.g.

Denna uppsats unders?ker DRT-tj?nsten Teletaxi i Odense, Danmark f?r att se hur tj?nsten f?rh?ller sig till h?llbar mobilitet och socialt h?llbar tillg?nglighet. Vidare syftar studien till att unders?ka hur resm?nster hos de boende i omr?den med Teletaxi f?r?ndrats sedan implementeringen av tj?nsten. F? studier har gjorts om DRT-tj?nster i icke-urbana omr?den och de som gjorts utg?r ofta fr?n ett ekonomiskt eller milj?relaterat perspektiv, d?r de sociala aspekterna g?llande h?llbarhet inte tas i ?tanke.

This paper describes Tempus Custode, a smartphone application with which the user may register working hours and travel time during the work day. The application communicates with a database via a server. The data stored in the database may be manipulated using an administrator tool, mainly for the composition of time reports. In this way, the user?s task of time reporting his day is greatly simplified.The application is able to automatically discriminate between work time and travel time, as it continuously fetches positioning data from the smartphone GPS receiver.

Syftet med denna studie ?r att unders?ka kommunikationen mellan l?rare och v?rdnadshavare p? en m?ngkulturell skola och hur l?rarna uppfattar att detta p?verkar eleverna. Detta kommer att unders?kas utifr?n ?tta h?gstadiel?rares perspektiv som, i kontrast till v?rdnadshavare, kommunicerar och har kontakt med flera v?rdnadshavare samt har en bredare ?verblick ?ver eleverna. Syftet konkretiseras genom f?ljande fr?gest?llningar: 1. Vilka m?jligheter och hinder finns i kommunikationen mellan l?rare och v?rdnadshavare p? en m?ngkulturell skola? 2. Hur uppfattar l?rarna att detta p?verkar eleverna? F?r att besvara fr?gest?llningen genomf?rdes en kvalitativ unders?kning d?r ?tta h?gstadiel?rare som arbetar p? en m?ngkulturell skola blev intervjuade individuellt. Dessa intervjuer spelades in, transkriberades och d?refter kategoriserades med hj?lp av en tematisk analysmetod som var i linje med studiens ?vergripande syfte.

Vi har byggt ett digitalt musikinstrument, en synthesizer med samplebaserad trummaskin. Synthesizern och trummaskinen är mjukvarubaserad medan gränssnittet är hårdvarubaserat. Operativsystemet som används är Linux och synthesizermjukvaran är utvecklad i ljudprogrammeringsspråket Pure Data. Syftet med denna rapport är att kunna ge utomstående personer en inblick i hur detta arbete har gått till och hur resultatet blev..

This thesis compares the impact on disk performance in a GNU/Linux  environmentwith three encryption algorithms: AES,  Serpent and Twofish in three different implementations: DM-crypt, Loop-AES and Truecrypt. For all three algorithms a key length of 256 bits is used.The thesis shows that the least performance impact during data encryption, and thus file writing, is reached by using AES or Twofish encryption implemented in DM-crypt or TrueCrypt. The thesis shows that some data operations with a sufficiently low processor utilization barely affects disk performance at all if encrypted using the optimal implementation and algorithm.It is also discovered that the performance impact during data decryption, or file reading, can be minimized by using the most efficient implementation and algorithm. The best results are met with the AES or Twofish cipher, regardless of implementation.An important conclusion that  is  drawn is that it is hard to determine a superior encryption solution for all purposes. However, by reviewing and examining the collected data from all aspects of disk performance the AES implementation in TrueCrypt is, with small marginals, determined to be the most optimal..

Cloud computing has become a very publicized and popular concept in recent years, both in business literature and research, where data ownership is the security aspect which has usually been ranked the highest of the disadvantages that can be identified with cloud services. Today there is a lack of research on information ownership from an informatics perspective, as it is most often discussed from a legal perspective.In our study we interviewed six different companies that use cloud services, on which attitudes and reasoning they had on their information ownership. We compared these attitudes with the attitudes we identified in business literature and research on the subject. In business literature we found four recurring themes which were very clear about how a company should govern information ownership.Overall the results of our interviews showed that there is widespread ignorance at the companies on how information ownership in the cloud is regulated between the company and the cloud provider. All companies expressed that they had not experienced any change in ownership when they placed their data in the cloud, and they expressed no major concerns about how the ownership was handled.

Denna studie har genomförts med syftet att redogöra för vilka möjligheter och hinder som kan uppstå vid införandet av Big Data-baserade IT-lösningar inom den svenska hälso- och sjukvården. Studien bygger på en explorativ fallstudie med fokus på det svenska projektet 3R- Framtidens vårdinformation. Intervjuer har genomförts med personer som är insatta och kunniga i ämnet och därför kunnat bidra med en sammanfattad bild av vilka initiativ och ambitioner som finns i dagsläget. Studiens resultat visar att Big Data kan bidra med en mängd möjligheter till förbättrad sjukvård i Sverige. Resultatet visar på att möjligheten med att samla all information i en gemensam kärna, bidrar till bland annat förbättrad forskning, en förbättrad relation mellan vårdgivare och patienter, möjlighet att kunna utföra prediktiva analyser samt underlättar arbetet med diagnostisering av sjukdomar.

Digitizing objects and environments from real world has become an important part of creating realistic computer graphics. Through the use of structured lighting and laser time-of-flight measurements the capturing of geometric models is now a common process. The result are visualizations where viewers gain new possibilities for both visual and intellectual experiences. This thesis presents the reconstruction of the Parthenon temple and its environment in Athens, Greece by using a 3D laser-scanning technique. In order to reconstruct a realistic model using 3D scanning techniques there are various phases in which the acquired datasets have to be processed.

Concept description är en data mining-uppgift som strävar efter en begriplig beskrivning av koncept och klasser, inte exakta prediceringar. Syftet med studien är att visa hur prototypbaserad klustring kan skapa förståelse för en datamängds underliggande domän, enligt concept description. Experiment har utförts med data från pokerdomänen. Datamängden samlades in från ett low-limit, shorthanded bord, hos en av de stora Internetsiterna för online pokerspel. De två experimenten utfördes med samma datamängd, men där uppsättningen attribut skiljde sig åt.

The aim of this study was to understand how evaluations are implemented and used in procured nursing homes for elderly. Our methodological approach consisted of a single-case study research. The case in this study was Växjö municipality. Three procured nursing homes for elderly were chosen in the municipality as examples of implementation and use of evaluation. The method for retrieving empirical data and the analyzing of it was based on triangulation.