Most of the portable electronic devices use a battery as a primary power source. Nowadays, when the applications are becoming smaller and smaller and more power efficient, the designer needs to concentrate more on reducing power consumption, using secondary power sources and introducing power storage devices. Multiple power source availability and a power storage device on the board will make the applications much more useful and efficient in everyday use. This thesis proposes a power supply unit (PSU) for wireless sensor platforms which is capable of supplying a sensor node with energy from multiple sources, as well as status information from the PSU. Present power storage devices, like electric double-layer capacitors (EDLCs) and batteries, have become more and more common as their characteristics have developed.

In this thesis, a computer program that in a simple way can calculate the performance of control loops at the refinery Preemraff Lysekil has been created. The computer program has been adapted to the environment at Preemraff Lysekil. Theories for evaluation has been studied in aspect of reliability and of automatic implementation. The evaluation has been carried out from data collected directly from control loops at the refinery and from simulated control loops with implemented errors. Among the studied methods are Harris index and Stattin´s oscillation index.

The water level of Lake Mälaren has been regulated since the 1940?s. A recentinvestigation suggests that the current regulation needs to be adjusted in order toprevent a decline in water level, salt water from infiltrating from Lake Saltsjön,and risk of floodings. In addition to these preventions, the new regulation couldpotentially effect the natural environment and agriculture practices in the lowlands that surround the lake. The new regulation proposal calls for an increase invariations in Mälaren?s water level during seasons, while the annual mean waterlevel will remain the same.

Syfte: Syftet med studien var att beskriva förekomst och typ av tillbud (adverse events) samt kommunikation och samarbete mellan sjukvårdspersonal, enligt principerna för CRM (crew resource management), vid intrahospitala transporter av intensivvårdspatienter. Metod: Studien var en prospektiv, kvalitativ och deskriptiv strukturerad observationsstudie med ett konsekutivt urval av 15 intrahospitala transporter av vuxna intensivvårdspatienter. Ett observationsprotokoll användes. Citat och fältstudieanteckningar nedtecknades och analyserades med innehållsanalys. Resultat: Tillbud förekom i 12 av 15 intrahospitala transporter. Majoriteten var utrustningsrelaterade tillbud. Inga allvarliga tillbud skedde.

Epizootier som drabbat marina däggdjur och lett till storskaliga dödsfall har uppmärksammats runt om i världen de senaste decennierna. Höga halter av persistenta miljökontaminanter såsom DDT (diklordifenyltrikloretan) och PCB (polyklorerade bifenyler) har uppmätts hos djur som drabbats. Detta har lett till tankar om att miljökontaminanter, i den nivå de finns i våra akvatiska ekosystem idag, kan vara en bidragande orsak till den ökade mottagligheten för infektioner och den ökade mortaliteten hos marina däggdjur. I denna litteraturstudie sammanställs resultaten från försök, både på laboratoriedjur och marina däggdjur, som tyder på att kontaminanter med fokus på PCB kan orsaka immunosuppression och därmed vara en bakomliggande orsak till allvarligheten i dessa epizootier. Resultat från studier visar på att PCB kan orsaka immunosuppression genom att ge nedsatt proliferativt svar hos T-lymfocyter under stimulering med mitogener, minskad aktivitet hos NK-celler, nedsatt antikroppsproduktion, minskad antigen-specifik proliferation och minskat DTH (delayed-type hypersensitivity) svar.

Hunting ground graves were distinguished as a separate category during the 1930s.         There is however no clear definition of what a hunting ground grave is. They have been constructed over a large area over a long period of time (200 BC-1200 AD) and their morphology varies.This paper investigates how the archaeologists have discussed the hunting ground graves since they were distinguished as a separate category until today. It investigates what concepts that have been used to define and categorize the graves as a group. It also investigates if the choices of concepts are depending on a broader societal perspective.To find the answers to these questions two surveys have been done.

The last few years have been characterised by increasing online communication and the emergence of social media, made possible by Web 2.0. In society as well as in research, social media is used for knowledge produc- tion and networking. One example of this is Mendeley, a social reference management tool. With answers from users all over the world, this study investigates the use of Mendeley, if the respondents use other social media and if all of this affects scientific communication. The aim is also to study what the respondents think about the future of scientific communication and if this can be related to current tendencies.The theoretic framework for this study is based on Leah Lievrouws research on the Cycle of Scientific Communication and the relationship between the ?Little Science 2.0?-scenario and the ?Big Science Retrench- ment?-scenario.A qualitative web based survey was conducted (41 answers) and complemented with an interview with a professor in environmental sciences.

Safe retrieval of nutrients from human excreta to fertilize crops in order to gain adequate yields will increase food security and sustainability in agriculture areas with nutrient-poor fields. Safe and nutritious food will meet the dietary needs of the individual which promotes public health and the ability of an active life. Human excreta should be considered as a resource instead of being assumed as waste. Human faeces and urine is excellent fertilizers which may close the nutrient loop if utilized properly. However, sanitation of the excreta is required to prevent disease transmission by reducing the content of gastrointestinal pathogens such as bacteria, viruses and parasites. The objective of this study was to in small scale evaluate the sanitation in a combined liquid compost and urea treatment by monitor the inactivation of bacteria and viruses at the combination three start temperatures, 45, 40 and 35 °C, and three additions of urea, 0.5, 0.75 and 1 % and reference, 0 % urea addition.

The design regulations of Boverket (BKR) have long been the mandatory standard for construction design in Sweden. However from the end of the year 2010, the BKR will be replaced by the European standard Eurocode (EC). The transition to EC has been delayed and it is not until the second of May 2011 that the use of EC will be mandatory. Because EC and BKR differ from each other it is highly interesting to investigate and explain these differences.The purpose of the thesis is to compare the two standards and investigate how they give different results or not for the dimensioning of structures of steel with associated loads. The current project HVC (Pets Science Center) in Uppsala is used as a model for the design of the steel structure used in this study.

Since their invention in 1999, CubeSats have become a widespread standard for small picosatellite missions. CubeSats allow for quick development of satellite payloads and launch in space without the high costs of a normal satellite. Emphasis during the CubeSat design process is placed on use of commercialoff- the-shelf (COTS) components and reuse of previously-designed units.This report describes the interfacing of a scientific magnetometer, the Small Magnetometer in Low-Mass Experiment (SMILE) to such a CubeSat mission, the Space Weather using Ion spectrometers and Magnetometers (SWIM). Design of a complete platform for use in multiple such missions is presented here.Modularity is one of the key aspects followed in the course of the work. A new board containing the analog pick-up and compensation circuitry for SMILE has been designed to fit inside a CubeSat frame.

Abstract Moerkerken, Anneke (2006) Klassrumsmanagement, Fördröjd uppmärksamhet med hjälp av trafikljusmodellen Skolutveckling och ledarskap, Specialpedagogisk påbyggnadsutbildning, Lärarutbildningen, Malmö högskola Syftet med följande arbete är att bidra med en utökad insikt om begreppet klassrumsmanagement och dess begreppsstrukturer samt att undersöka användandet av trafikljusmodellen med betoning på det specialpedagogiska området. Klassrumsmanagement berör hanteringen av mål och innehåll samt genomförande av lektioner i ett socialt organiserat sammanhang i klassrumsmiljöer. Man kan med hjälp av dess teorier arbeta med de organisatoriska, sociala, didaktiska och pedagogiska färdigheter som behövs för att på ett bra sätt kommunicera med eleverna. Detta för att skapa förutsättningar för ett klassrumsklimat i vilket att lära ut och att lära in sker så effektivt, positivt och innehållsrikt som möjligt. Vid trafikljusmodellen använder man sig av olika signaler för när eleverna kan rådfråga pedagogen eller sina klasskompisar medan de arbetar självständigt med sina uppgifter. En enkät angående användandet av trafikljusmodellen var överlag positiv. Både pedagoger och elever upplevde att fördelningen av den tid pedagogerna förlade på eleverna blev mera rättvis och att eleverna kunde koncentrera sig bättre på uppgifterna.

This master thesis was done for a company called BRUKS which is active in woodprocessing,bio-energy and bulk material handling industry. The idea for the master thesis wasto develop a new reclaiming method for silos where wood chips are being stored. A mediumsegment of between 1000 ? 5000 m3was defined as the segment with the most sales potential.Two different concepts were produced, one for new constructions and one for rebuildingalready existing silos.In the beginning of the master thesis a lot of time was spent on visiting different BRUKSoffices and customers to get an overview of the industry and the product. This informationwas the basis when the idea generating phase began.

SammanfattningMiFID, direktiv om marknader för finansiella instrument är ett nytt europeiskt regelverk för den finansiella sektorn som träder i kraft den 1: a november 2007. Direktivet syftar till att förstärka konkurrenskraften för den finansiella sektorn, förbättra konsumentskyddet samt inkludera hela utbudet av finansiella tjänster och produkter. Då MiFID: s införlivande i svenska lag försenades fick de svenska värdepappersföretagen under 2007 en relativt kort tidsperiod på sig att anpassa sina verksamheter till de nya bestämmelserna. Syftet med denna uppsats är att undersöka vilka svårigheter tre svenska värdepappersföretag erfarit vid arbetet med att anpassa deras verksamheter till de nya bestämmelserna i MiFID. Vi har studerat direktivet och jämfört med nuvarande regleringar samt genomfört fyra intervjuer, varav tre med svenska värdepappersföretag av varierande storlek.

Being a successful global business player depends on firm?s ability to mobilize its resources worldwide. For this reason getting the right people with the right skills, at the right time, at the right place is crucial and makes expatriation one of the most important issues of today?s business world agenda. In terms of expatriation; national culture provides the context for the whole process.

Background: Good communication is very important for the safety of patients in emergency situations. Few studies have been conducted regarding communication among health care staff. The aim of the present study was to investigate anesthetist nurses experience of communication among health care staff during a situation of emergency in a hospital ward.Methods: The study is explorative and based on interviews with six anesthetist nurses. A qualitative content analysis was used as an analyses model.Result: The six anesthetist nurses experienced structured communication as of great importance during an emergency situation. Three main categories appeared from the material: i) the importance of the organization ii) communication structure and communication patterns and iii) education and experience with nine subcategories.