Detta är en kvalitativ intervjustudie som undersöker maskinpersonalens upplevelser av att använda headsetkommunikation i arbetet ombord. Totalt sex stycken maskinbesättningsmedlemmar intervjuades om deras upplevelser av hur headsetkommunikation har påverkat utförandet av arbetet, personlig säkerhet och tidseffektivitet. Resultaten som framkom av intervjuerna visar på att kommunikationen förbättrats med headsetkommunikation genom att talkommunikationen inte begränsas av höga bullernivåer vilket leder till minskad röstbelastning. De intervjuade vittnade om att den förbättrade kommunikationen underlättade i arbetet och ökade den personliga säkerheten genom att risken för missförstånd minskade samt att maskinbesättningens situationsmedvetenhet ökade. Förbättrad ergonomi vid svåra arbetsställningar i trånga utrymmen jämfört med handburna radioapparater upplevdes även det som en fördel med headsetkommunikation.

The goal of this thesis is to design an attachment between a duct and a pod. A pod is what could be compared to an outboard engine for larger vessels. The pod is placed on the outside of the ship?s hull and can rotate 360 ?. A duct is a large steel ring that can be placed around the propeller on the pod to increasethe propulsion force of the ship in lower velocities.

The purpose of this study is to examine the retrieval performance of three search engines, specialized in retrieving news articles: News Index, Excite News Search and Ananova. Thirty questions, grouped into three categories – politics, economy and sports, were used and the first twenty documents for each question were examined. The questions used were designed to be as current as possible and efforts were made to perform the searches with as little time span as possible between each search engine. The precision of the search engines was determined for each of the questions as well as for each category and for the combined categories. In measuring precision an average was calculated, intended to favour search engines that place its relevant documents early in the ranked list.

This is an investigation into the ways in which a group of librarians experience and make use of the intranet in their vocational role. The theoretical frame of reference consists of a model of how professionals seek information, which is based on a role-theory. As a method, I have applied a qualitative case-study. Using semi-structured qualitative interviews I have interviewed five librarians and the webmaster responsible for the intranet in their library. I have investigated how elements such as the age and vocational role of the librarians affect their use of the intranet.

The purpose of the project has been to work out recommendations that reduce the energy-related costs and environmental impact of HPW Fresh & Dry Ltd., a fruit drying factory in Ghana. The factory produces electricity with diesel and biogas but also purchases electricity from the national electricity company. Heat for the drying process is produced from biogas, kerosene and solar panels. In the project the energy system was analyzed by measuring production and consumption of heat and electricity. The project results show that the factory can become self-sufficient on heat if the available energy is used more efficient. The production units for both electricity and heat have low efficiencies.

This paper examines whether the American officer?s education at West Point and the Swedish officer?s education at the Military Academy Karlberg have adapted their history of the military art education in accordance to the new requirements of the Armed Forces and its focus on the operational defense. Sweden is evolving towards an operational defense and so is the United States. This in turn requires that training and education keep up with the changes. The National Defense College in Sweden do not focus the teaching of advanced history, which happened beforet he invention of the engine, in the officer?s training program, while the American education is rather advanced, with special focus on events taken place in the 19th century up to the Cold War.

Want to help making the world a better place? Do it with HypOCycle!HypOCycle is a bachelor thesis that started in September 2007. The project is owned byLars-Johan Hjertz and Erik Westerlund.HypOCycle is probably the only bike in the world that has a linear pedal movement. Themovement comes from a new engine technique that hasn?t even been brought to themarket yet.

 This degree project aims at developing a concept for how to use solar energy to pump up water. The target audience is people living in areas where the functioning of the electricity and water network is absent. In these areas, the hand-powered water pump is the most common technology. The degree project's goal is to find an economically viable alternative to the time consuming hand-powered water pumps. The power comes from solar energy.

This thesis has been made in cooperation with the forestry machinery producerEco-Log in Söderhamn. The focus of the thesis has been to find a cheaper wayto open the large engine hood of the company?s harvesters. The goal was tofind a solution that could increase the value for the customers by being saferand simpler to use, or, at the least, keep these values at an equal level comparedto the previous solution.In order to make it possible to CE-mark the new solution, it was importantMachinery Directive that came into effect from the beginning of 2010.To begin with, a specification of requirements was set up. Thereafter, anumber of different basic concepts was retrieved and evaluated.

Projektet kretsar kring idén om en lagringsform, utformad som en tabell, som inte är bunden till en specifik plattform eller ett specifikt filsystem och som kan fungera som en molntjänst. Denna lagringsform är dessutom mer avancerad än en vanlig tabell då den innehåller tre dimensioner.Idén kom till under en föreläsning om molntjänsten google app engine då det kort förklarades att de använder ett, av dem själva skapat, system som kallas för BigTable. Detta projekt liknar BigTable men skiljer sig då detta projekt är något enklare, öppen källkod samt att det är baserat på java vilket gör det plattformsoberoende.Syftet med projektet är skapa en enkel plattform för datalagring som kan användas som molntjänst där den underliggande tekniken lämpar sig för användning på vitt skilda system och hårdvara.Tanken med ett sådant system är att man med små medel ska kunna skapa en egen datalagring där den traditionella filservern suddas ut och det mer moderna molnkonceptet används. Genom att parkoppla servrar kan man i teorin skapa ett världsomspännande lagringsnätverk med enormt stor lagringskapacitet men är i praktiken mer inriktad på privata moln. Det spelar dock ingen roll om man enbart har en maskin eller flera hundra, för användaren kommer det alltid fungera likadant.Problemet som detta projekt tar sig an är det om datalagring och hur den kan lösas på ett sätt som bidrar till ökad ekonomisk vinst utan att minska på skalbarhet och användbarhet.Projektet löser även en annan viktig aspekt med datalagring vilket är versionshantering, något som andra tjänster inte erbjuder, tar bra betalt för eller som enbart finns i begränsad form..

Vertical hydropower units has a rotating mass of up to 1000 tons. For the generator and turbine to work well the rotating system is required to be centered in relation to the surrounding structure. This is achieved by means of radial bearings. The dynamic characteristics of these bearings have a strong impact on the overall rotational dynamics of the total system and thus influence the vibrations in the unit. At Vattenfall Research & Development in Älvkarleby ongoing research is taking place on how the bearing parameters should be represented in the rotor dynamic calculations.

In today?s modern age, energy consumption has become a major issue, both from an environmental viewpoint and cost perspective. Because of a rapid technologic change and increased costs of production of electricity, the demand to develop effective methods for energy efficiency industries have grown.The electricity-intensive industries, such as plastic industry, the demand to reduce energy consumption has grown significantly over the past 10 years, which have led to the development of different methods to determine and locate energy-consuming parts in the industry. This also means being able to prioritize and organize activities in the industry.In this study the measurements of voltage, current, power and PF performance on injection molding machines (K-TEC 275 form Ferromatik Milacron in Germany) with a focus to locate, within a machine, various measures that could improve energy use in the plastics industry, in this case RostiGP in Gislaved. These measurements have been carried out with the help of a power quality clamp meter to carry out time logs of the machines for some time during normal word rate.

Assessment is considered one of the most important tools used today by people in almost everything they do and learn. This also applies to school, where assessment is considered as a constant companion to teaching and used in order to develop students' learning and skills. Assessment is also an educational necessity which has different purposes and therefore different consequences.                                                                                                                        The idea of ??this thesis was on the basis of the interviewed teacher's perspective to investigate what role the formative assessment has on the development of pupils' learning and knowledge in mathematics for primary education, and explore how the teacher can, according to my informants, work with this assessment practice in the classroom so that it promotes the learning of the students in the best possible way.                                                                To carry out this study, I used qualitative research studies, the interview method, and also talked to five different teachers in the lower school ages on their view at the work of the formative assessment. Theoretical basis of the thesis is also based on the research that says that the assessment can be used to promote student learning and knowledge, but also the teacher's learning?s in the educational process: assessment can and should be an assessment for learning.

Internet har en allt större roll i vårt samhälle och sökmotorerna är ett av de vanligaste sätten att leta sig fram till relevanta webbplatser. Sökmotorernas algoritmer visar sig dock bli allt mer invecklade och effektiva genom att blanda in användaren och hämta information om dennes intressen. Sökmotorerna hämtar resultat som inte bara är relevanta i förhållande till sökfrasen, utan också i förhållande till användaren. Sökmotorn skapar en profil av varje användare och med den preciseras resultatet. I studien använder vi oss av litteratursökningar och intervjuer för att undersöka vilken inverkan profilerna har på resultatet samt vilka åsikter användare, inom målgruppen studenter, har angående resultatet och profilerna.

This report summarize what have been done during the Master of Science Thesis that Klas Schjelderup has written for the company RANOTOR Utvecklings AB. The company is developing modern steam engines and this work should develop a machine to perform tests on a new type of piston seal that hopefully could be used in the future. The steam engines will be both volumetric and energy compact, around 1600hp/literof cylinder volume, and it will have a lot of practical applications.The new type of piston seal is hydrostatic lubricated which means that a fluid is separating two faces that normally is in contact. In this case pressurized water is used to separate the piston seal from the cylinder wall. RANOTOR have earlier formulated that at least the expander in the modern steam engine have to be oil-free, due to other components functionality in the closed water system.