Science and technology has been the bedrock of human growth and dynamism. Man has over the years distinguished his existence from all other beings by his ability to champion and fashion his existence. Among his tools is biotechnology which actually attenuates the fears of aging and death.Human reproductive cloning stands out as one of the means through which biotechnology plans to achieve this perfect existence for man. Technological advancements in the field of biotechnology are now in the threshold of human procreation.Human reproductive cloning is seen as an assisted method of reproduction which creates a newborn that is genetically identical to another human being.Human reproductive cloning as a technology and as a means of reproduction is not without its pros and cons. In as much as the technology promises to mention but a few, hope for the infertile couples and single parents, as well as the hope of reproduction without passing on hereditary diseases; it at the same time beeps some flashes of worry.

Detta examensarbete reder ut arbetsprinciperna för olika typer av hårddiskskrivskydd; hårdvaruskrivskydd, mjukvaruskrivskydd, hybridskrivskydd och bygelskrivskydd. Slutsatsen av utredningen är att endast hårdvaruskrivskydd Detta examensarbete reder ut arbetsprinciperna för olika typer av hårddiskskrivskydd; hårdvaruskrivskydd, mjukvaruskrivskydd, hybridskrivskydd och bygelskrivskydd. Slutsatsen av utredningen är att endast hårdvaruskrivskydd bedöms ha tillräckligt pålitliga skyddsprinciper, vilket motiveras av dess oberoende från både hårdvara och operativsystem. Vidare undersöks hårdvaruskrivskyddet Image MASSter(TM) Drive Lock från Intelligent Computer Solutions (ICS). Några egentliga slutsatser gick inte dra av kretskonstruktionen, bortsett från att den är uppbyggd kring en FPGA (Xilinx Spartan-II, XC2S15) med tillhörande PROM (XC17S15APC).

Information stored on unprotected computers that gets lost or stolen, and falls intothe wrong hands, can easily be accessed by moving the hard disk to a controlledcomputer, or by booting the computer from a removable medium, in order to getaround the operating system login. This is something that largely affects companieswhere customer information, trade secrets and other sensitive information can becompromised. A classic solution to the problem is encryption of individual files, but ithas some drawbacks as it puts a great responsibility on the users and unencryptedinformation can be left by mistake. A better solution to the problem is transparentencryption of the entire hard disk, i.e. that encryption and decryption of informationis performed automatically and without the user being affected.

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..

Syfte: Studiens syfte var att ta reda på om det fanns någon individuell skillnad i vertikal CD-kvot (cup/disk-asymmetri) mellan höger och vänster öga hos en normal population. Metod: Ett biomikroskop och en volklins (+78D) användes vid bedömningen av synnervspapillen. Papillens (diskens) och cupens vertikala storlek mättes genom justering av ljusspaltens höjd på biomikroskopet och de båda värdena lästes sedan av från spalthöjdsskalan på biomikroskopet. CD-kvoten räknades ut på höger respektive vänster öga genom att cupens uppmätta värde dividerades med diskens uppmätta värde. Därefter gjordes en jämförelse av den individuella CD-kvoten på höger och vänster öga.

Clustered Columnstore Indexes (CCI) and In-Memory Online Transaction Processing (OLTP) are two new techniques that were introduced with Microsoft?s new database management system SQL Server 2014.The thesis analyzes these two techniques, describes the theory behind them and also the background information that needs to be known to understand more of the new techniques. Performance tests of the new techniques have been performed to see how much faster response time we can get and less storage we need to use where the result is represented by performance diagrams and a compression diagram. This thesis is a cooperative work with a company called Trimma and the result is used as support to decide if these new techniques could be of advantage for the company.The test consists of five test queries with different purposes. The result is illustrated by diagrams that show the result and another diagram that shows how much the data gets compressed with the different techniques.

In this study we try to focus on the costs for wear parts on different type of soil tillage machines and at Väderstad Rapid drilling machine. We have studied some of the leading types of cultivators and disk harrows. Among the cultivators we have investigated Väderstad Cultus, Dalbo Dinkomax, Horsch Tiger and Terrano. At disk harrow we have looked at Amazone Catros and Väderstad Carrier. We have made more detailed study on costs for wear parts, working depth, driving speed and diesel consumption.

Vid torrgranulering av masugnsslagg med roterande disk hälls den smälta varma slaggen i en stråle på den roterande disken. Slaggen slungas sedan radiellt ut åt sidorna från disken och sönderdelas till partiklar. Torrgranuleringen bidrar både till att en värdefull produkt i form av cement kan framställas, samtidigt som energin från den varma slaggen återvinns. I dagsläget finns dock inte tillräcklig kunskap om hur olika processparametrar påverkar sönderdelningen och storleksfördelningen av partiklarna för att kunna tillämpa processen inom industrin. Syftet med projektet var att skapa en experimentell och en numerisk modell av torrgranuleringsprocessen med roterande disk för att undersöka hur olika processparametrar påverkar sönderdelningen och storleksfördelningen på partiklarna, samt att utveckla en bildanalysmetod för att validera den numeriska modellen mot de experimentella resultaten.En experimentell modell av torrgranuleringsprocessen med roterande disk skapades i laboratorieskal och förenklades genom att vatten användes istället för masugnsslagg.

The thesis investigates how two of the world?s most powerful international actors, the US and the EU want to promote democracy and human rights. The aim is to compare how the US and the EU work in order to support a democratic development in the world. In order to fulfill the purpose of the thesis a qualitative text analysis was used. Since the aim is to compare the US and the EU I believe this method is beneficial.

In the following study I probe the social world of hard-rock music. By conducting interviews with four young male enthusiasts of this music I try to develop a general picture of this social world, as well as of the basic elements on which this particular subculture is constructed. The identity of a hard-rocker is based upon a number of factors beyond just a preference for that music. Throughout the interviews I encountered many implicit norms that one must followed in order to be able to see oneself as a true hard-rocker. I also found that from the respondents? perspective, the mainstream culture has, throughout the history of metal music, used various ways to counter the spreading of this genre.

A possible explanation for the inability of the governments of the world to implement necessary environmental policies is that they are worried of being punished by voters for implementing too forceful policies. But do voters actually punish governments that implement more stringent environmental policies? Few studies have explored this question directly. Parts of the literature on environmental policy and public opinion indicate that voters would predominantly reward governments that implement more stringent environmental policies, while other parts indicate that voters would predominantly punish them. It is also possible that voters punish governments that implement more stringent environmental policies in some contexts, but reward them in others.

Under de senaste åren har teknologiska förändringar medfört att banker ändrat utformningen av sina tjänster. Pengar har digitaliserats och individer har minskat användningen av kontanter. Flera banker har avvecklat den manuella kontanthanteringen över disk och erbjuder kunderna alternativa tjänster som exempelvis internetbank och kontokort. En del upplever nytta och nöje med tjänsterna, medan andra möts av svårigheter som gör att de inte använder dem. När en bank genomgår förändringar är det viktigt den tar hänsyn till kunderna för att behålla dem vilket leder oss in på studiens problemformulering: Hur ska en bank hantera sina kunder när organisationen avvecklar den manuella kontanthanteringen över disk och erbjuder alternativa tjänster? Huvudsyfte är att, genom en studie av Swedbank, skapa förståelse för hur relationen mellan bank och kund påverkas av förändringarna.

Under de senaste åren har teknologiska förändringar medfört att banker ändrat utformningen av sina tjänster. Pengar har digitaliserats och individer har minskat användningen av kontanter. Flera banker har avvecklat den manuella kontanthanteringen över disk och erbjuder kunderna alternativa tjänster som exempelvis internetbank och kontokort. En del upplever nytta och nöje med tjänsterna, medan andra möts av svårigheter som gör att de inte använder dem. När en bank genomgår förändringar är det viktigt den tar hänsyn till kunderna för att behålla dem vilket leder oss in på studiens problemformulering: Hur ska en bank hantera sina kunder när organisationen avvecklar den manuella kontanthanteringen över disk och erbjuder alternativa tjänster? Huvudsyfte är att, genom en studie av Swedbank, skapa förståelse för hur relationen mellan bank och kund påverkas av förändringarna.

The aim of this study was to investigate which situations haemodialysis patients consider as the hardest for avoiding fluid intake. The data collection was performed with a questionnaire which was distributed to haemodialysis patients who fulfilled the inclusioncriteria. Of 158 haemodialysis patients 103 haemodialysis patients chose to participate in the study. The participants were chosen from different dialysis centres (n=12) in north and south of sweden, excluding the middle of Sweden. The questionnaire that was given out consisted of 32 situations, the response format included nine alternatives, that included different kind of difficultes.

Three-dimensional computer graphics enjoys a wide range of applications of which games and movies are only few examples. By incorporating three-dimensional computer graphics in to a simulator the simulator is able to provide the operator with visual feedback during a simulation. Simulators come in many different flavors where flight and radar simulators are two types in which three-dimensional rendering of large terrains constitutes a central component.Ericsson Microwave Systems (EMW) in Skövde is searching for an algorithm that (a) can handle terrain data that is larger than physical memory and (b) has an adjustable error metric that can be used to reduce terrain detail level if an increase in load on other critical parts of the system is observed. The aim of this paper is to identify and evaluate existing algorithms for terrain rendering in order to find those that meet EMW: s requirements. The objectives are to (i) perform a literature survey over existing algorithms, (ii) implement these algorithms and (iii) develop a test environment in which these algorithms can be evaluated form a performance perspective.The literature survey revealed that the algorithm developed by Lindstrom and Pascucci (2001) is the only algorithm of those examined that succeeded to fulfill the requirements without modifications or extra software.