This report evaluates whether an interpreted high-level garbage collected language has enough information about its memory behaviour to make better cache decisions than modern general CPU hardware.With a generational garbage collector, depending on promotion algorithm and generation size, around 90% of all objects never leave the first generation. This report is based on the hypothesis that, because of the low promotion rate, accesses to higher generations are sufficiently rare not to benefit from caching.To test this hypothesis, we built an operating system with a Scheme interpreter in kernel mode, where the interpreter controls the cache. Generic x86 PC hardware was used, since it allows fine-grained control of cache decisions.Measurements of execution time in this interpreter show that disabling the cache for generations higher than the first does not give any performance gain, but rather a performance loss of up to 50%.We conclude that this interpreter design is not an improvement, but cannot conclude that the hypothesis is false in general. We suggest building a better CPU simulator to gather more data from which to make better caching decisions, moving internal interpreter data structures into the garbage collected heap and modifying the hardware to allow control in the currently rigid dimension of where data is cached---for example separate control of instruction and data caches and separate data caches for different areas of memory..

Även om de flesta av oss i dagsläget vet att våra mobila enheter kan tappa sina nätverksanslutningar lite då och då har det mer eller mindre blivit en självklarhet att i alla lägen ändå kunna använda våra favoritapplikationer som vanligt. Denna rapport syftade till att hitta en lösning på problemet med nätverksberoende applikationer genom att implementera ett offline-läge som kringgick detta beroende i GreatRate, en iOS-applikation för kundundersökningar i butik. Med hjälp av en databas för att mellanlagra data under tillfällen då en duglig nätverksanslutning inte fanns tillgänglig samt synkronisering av nämnda data när anslutningen åter blivit funktionell förväntades problemet kringgås. Resultatet blev som väntat en applikation som gav användaren en förhöjd användarupplevelse helt oberoende av nätverksanslutningens status. Några av slutsatserna som drogs var dock att flera olika lösningar finns för detta problem och att problemet högst troligt har olika utseenden för olika applikationer..

The purpose of this bachelor-thesis is to investigate the possible effects of lease accounting on the estimation of bankruptcy. This is done by estimating the risk via prediction models based on accounting ratios for a sample of 43 listed firms in Sweden. Estimation is conducted twice for each firm, once base on unadjusted data as it is presented in the annual report of 2012, and one with data adjusted for operational leases (that is data is treated as if all leases present were to have been reported as financial leases). In the next step it is tested weather the predictive ability of the models is affected by this adjustment or not. For this purpose translation of bankruptcy risk into synthetic credit ratings via interest coverage ratios is done.

Thesis Purpose: The purpose of our thesis is to explore different plausible scenarios concerning the future of the Swedish produce industry with regards to branding. Methodology: In order for us to answer the research question and fulfill its purpose, we have utilized a qualitative approach combined with of both an inductive and deductive theoretical approach. Our study is both explorative and speculative. Theoretical Perspective: The theoretical framework of our research is based upon Porters Five Forces and Competitive Advantage combined with Kapferers Brand Identity Prism and his ideas on Brand Innovation. Additionally, we have utilized the Game Theory.

Bakgrund: Dikotiska tester kan användas som del i testbatteriet för utredning av hörseluppfattningsstörning (APD, eng. auditory processing disorder) samt vid differentialdiagnostisering. I Sverige har dikotiska tester använts i studier där försökspersonerna varit 11 år eller äldre. Utanför Sverige har studier dock gjorts på barn från 5 år och uppåt.Syfte: Syftet med denna undersökning var att ta fram ett normalmaterial avseende dikotiska tester för elever i årskurs 1, 2, 3 respektive 4 i grundskolan.Metod: Dikotiska tester har utförts vid två grundskolor, på totalt 53 elever i årskurs 1-4. Testmaterialet bestod av siffror, stavelser samt meningar, vilket rapporterats med riktad rapportering.

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.

The purpose of this study is to examine the personnel?s perspective on how the emotions shame and guilt are present in the treatment of female addicts on an LVM institution. Three questions have been designed to meet the objective: How do they work in the treatment with guilt and shame, how important is it to work with these feelings and what significance does genders have in relation to shame, guilt and treatment? A qualitative approach and techniques have been used to obtain the result. The study's theoretical starting point consists of three themes: gender theory, labeling theory and a theoretical approach to the concepts of guilt and shame.

Examensarbetet är utfört på uppdrag av Banverket Data i Borlänge. Syftet med arbetet var att ta fram en kravspecifikation för en telefonkatalogs applikation för deras intranät samt utveckla denna i .Net mot ett befintligt mellanlager. Arbetet med utvecklingen har följt Banverket Datas egen metod för systemutveckling och arbetet med förstudierna har använt kvalitativ och kvantitativ metod. Dessutom beskriver rapporten även kravspecifikationer mer ingående..

In this paper we examine the possibilities to develop the population based research in Sweden by using technological advancements. The problem that exists with population based research today is that there is a contrast between conducting important research on one side and preserving the individuals? integrity on the other. To examine this problem we are studying two projects that are active in this area. The two projects are SIMSAM (Swedish Initiative for research on Microdata in the Social and Medical Sciences) and DDB (Demografiska databasen).

The basic ingredient of paper is the individual wood fibers. The property of the fibers depends on a variety of factors e.g., method of pulp production and processing. The final sheet quality depends in part on how the fibers interface between each other and therefore factors that affect the fiber size are of interest.The flexibility of the fibers depends in part on the pore water i.e., the fiber swelling. The sheet becomes less flexible at low water content which gives a loss in strength. Thus it becomes desirable to increase the water uptake.The experimental investigation described in this report consists of exposing the wood fibers to different ions and ionic strength and then measure the pore size by thermoporosimetry where a DSC (Differential Scanning Calorimeter) is used.

To make it easier for forestry planning the forest owners needs data which describe characteristics of the forest. Such data you usually get from some type of inventory. A relatively new technology which probably is getting more important in the future, is laser scanning because of lower costs. But because the laser technology is relatively new you need to compare it with conventional inventory technologies to get better understanding of the possibilities the laser technology gives. This work intends to estimate field measured characteristics of the forest from laser data with help of regression analysis and then see which of the field measured properties that best could be estimated and which laser variables that gave the best results. This study shows that heights has the best estimates, but biomass, diameter and volume also gives good estimates.

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..

Children's Need In Focus (BBIC) is a processing and documentation system used in child welfare cases to investigate, plan and monitor interventions. The BBIC has had a breakthrough in Sweden and out of the country's 290 municipalities, there are 284 that use the system daily as a tool in cases involving children. The purpose of this study was to examine how social workers experience the BBIC as a working system and what strengths and weaknesses there are in the BBIC concept. We wanted our study to examine how the BBIC could possibly enhance the quality of childcare matters, but also how the BBIC could potentially increase children's participation in cases. We have performed qualitative interviews with eight social workers who work in four different municipalities where the BBIC is applied daily.

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..

Young men who commit sexual abuse is a complex topic. This study is based on litterature on the subject and the material is processed through a qualitative content analysis. The study aims to study how the litterature describes the reasons why young men commit sexual abuse. It also aims to explore what is described to be effective treatment of young men who committed sexual abuse. The study found that most of the young men who commit sexual abuse comes from families where violence and psycohological abuse occurs. Many have themselves been victims of sexual abuse.