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..

During the winter 2011 Isaksson and Andersson did a time budget study on Nordens Ark?s Przewalskis horses during daytime when there were visitors and caretakers in the park. This time budget study was made during daytime and when there were no visitors or caretakers in the park. The horses where observed in the morning (5.30-6.30 am) and in the evening (5.45-6.45 pm) during four days. In addition to a time budget, the horses? positions in the enclosure were registered.

This study aims to examine how performance management is compatible with the operations at Sida, Sweden?s International Development Cooperation Agency, by performing interviews with representatives from Sida. The public sector is facing increased demands on accounting, which has emerged as an institutionalized social norm in society. The nature of Sida?s operations, however, proves to be highly complex, rendering results based management difficult to implement.

Uppsatsen behandlar budgetens betydelse för engagemanget hos ledning och medarbetare. Engagerade medarbetare är ingen självklarhet i ett företag och det kan finnas en osäkerhet hos ledningen om hur engagemang ska skapas. Ett problem, speciellt i mindre företag, kan vara att undvara resurser, exempelvis tid och pengar, för att skapa den extra glöd som behövs. Budget är ett verktyg som många företag redan använder och kan även användas som ett verktyg att samlas kring för att diskutera i företaget. Syftet med uppsatsen är att -beskriva och jämföra ledningens och medarbetarnas uppfattning om budgetprocessen i ett mindre företag, -tillämpa en modell om meningsskapande på de uppfattningar på budgetprocessen som identifierats i företaget samt -formulera tentativa slutsatser om hur meningsskapande kan användas som instrument för att skapa engagemang i ett mindre företag.

Authors: Maria Bergholtz, Alexander WestessonTutor: Daniel EricssonTitle: Performance Measurement of Creative work ? a culture study at PS CommunicationKeywords: Key Performance Indicators, Organizational Culture, Macro-culture, Subculture,Micro-culture, Art, Business, Creativity, PS CommunicationIn the paper?s introductory chapter, the chosen problem area regarding art and business willbe presented. The paper?s studied empirical case will also be introduced here. This then leadsto the reports chosen research questions:How do the company management and the companies? creative personnel approach differ inthe discussion regarding performance measurement on PS Communication?-What causes these differences?What impact does the corporate culture have in the discussion about performancemeasurement of PS Communication?-Is the corporate culture weak or strong?The purpose of this paper is to resolve the stand still in the discussion regarding performancemanagement by creating an understanding of different people active in the organization?sapproach to performance measurement.

Too much attention has been given to mainstream approaches in performance management and management accounting research, without taking in to account changes in the environment with the rapid growth of online retailing. This paper evaluates how and/or if performance management differs in online contexts by using a conceptual model developed by Ferreira et al (2009). The model and its components are tested on three multichannel- and six e-commerce businesses. The result and its analysis is commented on by two e - commerce experts. The result shows that the operation method of the models twelve components do not differ in terms of work methods in online and offline contexts.

Microproduction, also called distributed generation, is something that has become more and more popular in the electric grid. Microproduction can however lead to unacceptable performance if several units are installed in the same low voltage network. It is therefore good to know a limit where the performance of the low voltage network becomes unacceptable based on given parameters. This limit is usually called hosting capacity.In this report the hosting capacity with respect to voltage and current have been studied in three low voltage networks which are located in Falu Elnäts concession area. This has been done by simulations in a GIS-program where critical times of the grid have been simulated.

Export is a top priority for Sweden's economy but for Swedish companies it may involve uncomfortable risks of exporting without sincere consideration. When the United Nations Security Council puts an embargo against a country, this often mean an import and export restriction. The thought is to push undemocratic regimes into respecting human rights. When the embargo is in force, however, the parties are not able to fulfill their contractual obligations, which practically means that the agreement will be suspended. The problem is what happens when an embargo is in force for a longer period of time.

There are some key elements which distinguish a general operating system, such as Linux, from a Real Time operating system, such as OSE. The later belongs to the category of soft Real Time systems while Linux is a general operating system, with significantly improved real time properties after version 2.6. These improvements make it interesting to compare the two systems.When comparing two operating systems, there are a number of issues which have to be considered. One way to measure the performance of the systems is by studying the time consumption for the same functionality and hardware.During the study, the items that appeared as the most important for the performance of the systems, were: process primitives, system primitives, interprocess communication, context switches and interrupt latency.This work demonstrates that it is possible and reasonable to do performance testing on two different operating systems. The implemented tests cover a number of basic functionalities, which appeared to be the most crucial ones for the performance of the systems..

 Performance appraisals- a study of the performance appraisals significance as a tool for development in the public sector.Anders Larsson and Åsalill OlssonPerformance appraisals have been given a central role in leading businesses in the public sector and are seen as a tool to create development opportunities and achieve better results. This has resulted that performance appraisal in many organizations takes up capacity and time. This was the starting point of our interest to study whether the time spent on performance appraisals effectively pays for itself in the organization, in other words whether the effects expected actually are achieved. The paper examines first line managers` views on staff appraisal purposes and effects of a function within the Landstinget. The survey design, methodology and transaction are of qualitative and quantitative method with three different sources: literature review of previous research, interviews with first line managers in Landstinget Västmanland and the results from an employee satisfaction survey conducted on behalf of Landstinget Västmanland.

It's not a secret that most companies strive to get such a high economic return as possible. To successfully engage in a profitable enterprise, there are many elements that come into play. An important element is the motivation of the employees and their work performance. Work motivation is a key factor for the employees to improve their performance and therefore determinant for the successes of the company.This work is a case study in the production at Fresenius Kabi, Uppsala. The work is based on an employee survey that they fill out once a year and the aim is to develop a deeper understanding for these questions and how the employees see on leadership, communication and goal-setting as motivators and how these factors works in the company today.To get this deeper understanding I have used a qualitative approach.

In game development, performance is everything and the Playstation 3 provides a unique platform for utilizing parallelization of code to achieve extremely high performance. In this master?s thesis the issue of animation with smooth skinning is migrated from being a GPU process to becoming a parallelized and 358% faster process. This method is incorporated in an existing commercial game engine and integrated in a currently in development title for the Playstation 3. An in-depth study covers parallel processors, the CELL processor, used in the Playstation 3, and how contemporary industry leading game developers are utilizing the same unique architecture to increase their own games? performance..

Bakgrund och problemdiskussion: Budget har funnits i över 50 år i Sverige och är ett vanligt styrmedel i de svenska företagen. Under de senare åren har forskningen visat upp många delade meningar om hur budget uppfattas och dess betydelse. Budget har fått utstå mycket kritik samtidigt som många studier visar att företagen inte klarar sig utan budget. Uppfattas budget positivt eller negativt hos de som använder den på KappAhl och Lindex? Budgetprocessen är i lärobokslitteratur uppdelad i tre faser, budgetuppställande, budgetuppföljning och budgetanalys.

The purpose of this thesis is to examine the performance of queries that are expanded by 1 inflections, 2 compound splitting and 3 inflections and compound splitting combined. For compound splitting, the morphological analyser SWETWOL was used. Queries were executed in the Query Performance Analyser, QPA, containing the InQuery system. Query terms were selected from 29 topics, all of whom containing at least one compound word. Both the queries and the documents were in Swedish.

Den ökade takten av förändringar i organisationens omgivning har lett fram till att beslutsfattare söker efter alternativa styrmedel som är mer anpassningsbara till den specifika verksamheten. I och med det här så är det realistiskt att tänka sig att beslutsfattare kommer att ställas inför val mellan olika styrmedel. Trots detta så har beslutsfattare enligt tidigare forskning en tendens att vara ovilliga till förändringar. Den här studien har undersökt vilken betydelse kognitiv dissonans har för beslutsfattare i samband med val mellan budget och balanserade styrkort som styrmedel, samt om det finns några skillnader mellan hur svårt det är att byta ut budget mot balanserat styrkort och vice versa. Problemformuleringen testades med hjälp av två hypoteser i form av ett experiment som utfördes av en grupp studenter på civilekonomprogrammet, som kan liknas med morgondagens beslutsfattare, där de fick göra ett val mellan budget och balanserat styrkort.