Ericsson develops a new stripline Directional coupler. Its design is described in appendix B and differs from the Directional couplers Ericsson uses in current products. The new Directional coupler will be used for transmission power measurement in future UMTS 3G base stations.The most important parts of Directional coupler theory are presented. It is necessary to study this theory to understand how the coupler works and how it should be designed to get good performance.Optimal Directional coupler termination component values to get high directivity and broad directivity bandwidth have been investigated.The trim screws trim ranges have been studied.A simple analysis of serial production performance when termination component tolerances are taken into consideration has been done.The resistance components reactive (inductive/capacitive) characteristics at 2.14 GHz have been analyzed.The directivity performance limitations of the Directional coupler, when Ericsson?s band pass filter is connected, are investigated.Design changes leading to better performance are proposed.

This thesis is based upon the work done at Westinghouse electric company (WEC)inVästerås during the spring semester of 2015 and describes the development of a quickcoupler with associated blade changing tool. These are meant to be used togetherwith a sawing tool that the company uses for the dismantling of nuclear reactors,which is performed under water.The aim of the thesis was to develop a complete manufacturing documentation withdrawings and related CAD models which Westinghouse later can use to manufacturethe tool and the quick coupler. It was also included in the assignment to, if necessary,modify parts of the saw tool to adapt these to the intended blade changing tool.A number of visits to the company's workshop was made during the time to study thesaw that the thesis is based upon. The purpose of these visits was to get a better ideaof the dimensions, construction and the field of use of the saw. On three of thoseoccasions various engineers and consultants accompanied us to discuss possibleproblems with different ideas.This was interspersed with information in the form of literature studies on quickcouplers to create a clearer picture of the nature of the task.When enough information had been gathered a functional analysis was made to dividethe main problem into subthis phase the idea and concept generating process took place.The methods used for this was mainly brain writing and brainstorming.

The task given to us was to develop an industrial wheel with new thinking in terms of fresh design and construction, with the ability to brake. While the produced wheels of today only own the property of total braking, a wish was made to integrate the ability of directional locking.The time spent working with the project has been filled with multiple sketches of ideas and function analysis.Choices of material and ways of construction have been verified by calculations, tests and prototype building. The goal of this thesis has been to develop a unique caster with well thought-out design that would be adaptable to different areas of applications.The result was a hubless wheel with the ability of directional locking before total braking.A prototype of the wheel has been made to show the design and functions..

This report studies the possibility of using some sort of radio sender and transmitter in order to position skis lost in powder snow. It is concluded that a RF-solution on the 433 MHz frequency should be the most efficient. Different forms of directional antennas are examined and studies show that in theory the best suited is the so called ?Yagi-Uda antenna?. A solution based on using a Receive Signal Strength Indicator value together with the above mentioned directional antenna is developed.

This is a diploma thesis executed as a part of the examination of the educationalprogram Building engineer ? Construction management at Halmstad University. The aim of the thesis is to compare and evaluate conventional open-cut pipe-laying withhorizontal directional drilling. The thesis includes a comparison of the economic,environmental and time-based aspects of both methods and discusses which factorsthat determine the optimal choice of method.The study is mainly based on previous studies regarding the subject and oninterviews with professionals from the industry.A fictional project with five realistic cases of pipe-laying scenarios was compiled,sent to different companies for calculation, evaluated and compared. Our conclusionregarding when it?s suitable to use which method is entirely dependent on thespecific project.

By applying a segmentation procedure to two different sets of computed tomography scans, two geometrical models of the abdominal aorta, containing one inlet and two outlets have been constructed. One of these depicts a healthy blood vessel while the other displays one afflicted with a Abdominal Aortic Aneurysm. After inputting these geometries into the computational dynamics software FLUENT, six simulations of laminar, stationary flow of a fluid that was assumed to be Newtonian were performed. The mass flow rate across the model outlet boundaries was varied for the different simulations to produce a basis for a parameter analysis study. The segmentation data was also used as input data to a surface description procedure which produced not only the surface itself, but also the first and second directional derivatives in every one of its defining spatial data points.

Syftet med denna uppsats är att identifiera olika utvecklingsmöjligheter som Apoteket AB har på den avreglerade apoteksmarknaden. Genom att analysera attraktiviteten i de olika möjligheterna är ambitionen att ge rekommendationer om framtida verksamhetsinriktningar där bolaget kan uppnå en positiv utveckling. För att identifiera utvecklingsmöjligheterna har djupgående intervjuer med personer inom Apoteket AB genomförts. Den empiriska informationen har analyserats med hjälp av en SWOT-analys samt en Directional Policy Matrix (DPM). Utifrån detta har en bedömning av marknadens attraktivitet samt företagets konkurrensförmåga genomförts för att bestämma respektive utvecklingsmöjlighets attraktivitet.

The task of this project was to build an computer processing system for pressureregulation, in which the pressure loss over the open hydrolicvalve should be kept as low as possible. By using an cross connected proportional directional valve the valve problem could be solved. The control- and regulationproblem for the pressureregulation system was solved by using the DAQ- card NI6035E from National Instruments and the computerprogram Automatic Pressure Control 1.0 which has been software developed and written in Visual Basic. The final result showed that correct processvarible was obtained in 0,5 seconds, when the setpoint was changed in the testarea 0 - 2,5 MPa..

This study investigated whether in-situ audiometry, delivered via hearing aids, is a better option as a basis forprescribing hearing aid amplification, compared to conventional audiometry. By examining the real ear insertgain (REIG) in 29 ears (18 subjects), that had been fitted with a hearing aid programmed using both conventionalaudiometry and in-situ audiometry, the study looked at whether in-situ audiometry based prescription is closer tothe NAL NL1's fitting target than audiogram based prescription. The hearing aid Siemens Pure 7mi with speakerunit M was used on all participants. The results showed how in-situ audiometry based gain at certain frequenciesis more consistent with the target curve, especially at 1000, 1500, 2000 and 4000 Hz. It was not establishedwhether the findings of the study were statistically significant.

Convective snowbands is a weather phenomenon that is associated with heavy snowfall in a limited area. They are formed over ice-free parts of e.g. the Baltic Sea when there is a cold easterly airflow over relatively warm water. These convective snowbands can cause large amounts of snow along the Swedish east coast, often causing traffic hazards. Sometimes they can even paralyze an entire community.  In this study, convective snowbands that have formed over the Baltic Sea during the period 1980-2009 are examined, in order to find out how often they occur, what place they are most common and in what month they usually appear.

Syftet med denna uppsats är att identifiera olika utvecklingsmöjligheter som Apoteket AB har på den avreglerade apoteksmarknaden. Genom att analysera attraktiviteten i de olika möjligheterna är ambitionen att ge rekommendationer om framtida verksamhetsinriktningar där bolaget kan uppnå en positiv utveckling. För att identifiera utvecklingsmöjligheterna har djupgående intervjuer med personer inom Apoteket AB genomförts. Den empiriska informationen har analyserats med hjälp av en SWOT-analys samt en Directional Policy Matrix (DPM). Utifrån detta har en bedömning av marknadens attraktivitet samt företagets konkurrensförmåga genomförts för att bestämma respektive utvecklingsmöjlighets attraktivitet.

Syftet med denna uppsats är att identifiera olika utvecklingsmöjligheter som Apoteket AB har på den avreglerade apoteksmarknaden. Genom att analysera attraktiviteten i de olika möjligheterna är ambitionen att ge rekommendationer om framtida verksamhetsinriktningar där bolaget kan uppnå en positiv utveckling. För att identifiera utvecklingsmöjligheterna har djupgående intervjuer med personer inom Apoteket AB genomförts. Den empiriska informationen har analyserats med hjälp av en SWOT-analys samt en Directional Policy Matrix (DPM). Utifrån detta har en bedömning av marknadens attraktivitet samt företagets konkurrensförmåga genomförts för att bestämma respektive utvecklingsmöjlighets attraktivitet.

During the recent years the interest in entrepreneurial education has increased both in terms of research being made in the subject, but also in the extent of entrepreneurial courses in Swedish secondary schools, where as the concept Junior Achievement (JA) is particularly being used. A common goal of the entrepreneurial education is apart from teaching the students how to start and run a business, to develop the students? entrepreneurial skills and competences. The main purpose of the essay is to describe and illustrate the role of the teacher in the entrepreneurial pedagogy being used in courses with the JA concept and to investigate which entrepreneurial skills are being developed by the students participating in these courses. There is also the purpose of investigate what the characteristics are of this entrepreneurial pedagogy being used in the courses using the JA concept.

Ticks and the diseases they transmit are of major importance throughout the world. In Uganda, cattle are the most important livestock from an economic point of view. Livestock keepers fear bi-directional transmission of tick-borne pathogens between their livestock and wild animals. This cross-sectional study was conducted to establish and compare the sero-prevalence of the tick-borne pathogen Babesia bigemina among randomly selected Ankole Long-horned cattle and European crossbred cattle on 30 farms in Kiruhura district, in two sub-counties near Lake Mburo National Park in South-western Uganda. Half of the farms were situated in close proximity to the park and thereby housed cattle with more frequent wildlife-livestock interface (Sanga), whereas the other half had less frequent contact (Kikatsi).

Our employer Camatec Industriteknik AB gave us the assignments to increase theirs range of versions on Camcoil that is their own patent product. Camcoil is a capstan system that is used when steel band fabricated. Exist for example in production lines their steel band should be annealed. Our goal with this work is to come up with a completed production basis on a Camcoil for heavy industry. The basis should contain calculations, 3D-constructions, drawings and cost proposal on manufacturing and detail purchase.Demands on this project:1.