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1072 Uppsatser om Audio Frequency Track Circuit - Sida 31 av 72
Mobil Bastu
This thesis is an addition to pictures and animation that has been developed using CATIA V5. The animation and the images are a market basis to test whether the product is of interest in the Nordic market. The thesis is structured with elements of the Fredy Olsson method. In this thesis there is also a short presentation of the company Tylö AB, which been chosen to market test the product. A product definition with the sub-headings; ?Description and use of product?, ?Environmentand users?, ?Economy? and ?Product inquiry?, are the basis for the product.
Omständigheter och motiv : Om hur öppna lärresurser blir till, används och återanvänds
With the purpose of finding the motives behind use, production and reuse of Open Educational Resources (OER), the writer has conducted a qualitative survey. The three main questions in this two years master?s thesis are:? Why do people use others? unmodified OER?? Why do people produce OER?? Why do people alter and reuse OER?The theoretic framework is built around Manuel Castells? network society, with its social and efficiency seeking dimension, along with the Knowledge commons. Some pedagogy is included as well.A web survey was distributed to 796 users of the Connexions OER repository. 95 responses were received.
Mät och loggningsutrustning för spänningstransienter.
To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.
Utveckling av ett centraliserat informationssystem
CML Data AB is a small IT-company that offers complete IT-solutions adjusted to the needs of the customers. It is hard for the employees to bring all necessary papers, files and software when visiting a customer. They also have difficulties planning their daily work and to keep track of each other, because of the lack of a shared calendar.The purpose of this report is to answer the following questions:- How do you develop a centralized information system for CML Data AB where it is possible for the employees to gain access to files, plan their days and where the customers can get access to relevant information?- How do you develop an information system that is easy to manage?- How do you make it easier for the employees at CML Data AB to update their homepage?We discussed the problems and the future information system with the employees and were able to establish a set of needs and requirements which we then used as a foundation during the software development. We used user centered system design during the whole process and focused a lot on usability and interaction design.The project resulted in a stylistically pure and user friendly portal.
Hur noggrant kan kontaktkrafter mellen hjul och järnvägsräl mätas?
Det finns flera olika metoder att väga ett tåg samt att detektera hjulskador såsom hjulplattor då ett tåg är i drift. I dagsläget används töjningsgivare som monteras på rälen och som kalibreras efter en statisk last. Kalibreringen går till så att ett tåg med känd last sakta passerar över givaren. Detta arbete avser att studera hur eventuella dynamiska effekter påverkar sådana mätningar. Dessa mätmetoder ska undersökas för att få reda på hur tillförlitliga de är.
Särskilt stöd på en grundskola : En studie om elevhälsans tolkning av och arbete med särskilt stöd enligt Skollagen
The aim of the study was to understand how an elementary school interpreted and worked with the law Skollagen (SFS 2010:800) concerning special needs in school additionally in which way a neuropsychiatric diagnosis might interact with the interpretation. To answer the aim we used following research problems: How does the school define the term special needs and special resources itself? How does the school identify pupils with special needs and work with them? In which way does the neuropsychiatric diagnosis affect the interpretation of the law concerning special needs when it comes to deciding whether a pupil is in need of special recourses? Skollagen (SFS 2010:800) does not define special recourses and does not indicate how the school should use them. We were therefore interested in how an elementary school defined the term and decided to work with it. We based our study upon interviews with 6 respondents whom are central in the process of providing special resources for children in school.
Copingstrategiers och det sociala stödets samband med upplevd stress hos vårdpersonal
IKEA HaparandaTornio employ some two-hundred people in its furniture retail store.Keeping track of staff statistics and employee information has previously been achievedthrough the use of a basic Microsoft Office Excel spreadsheet. The store?s human resourcesdepartment requested an upgrade to this system with the hope of speeding up andsimplifying the administrative process, as well as to make it easier to monitor HR-relatedtarget statistics. The following report documents the development process of that upgrade ascarried out by the author. The project draws on research in usability design and cognitivepsychology to develop a user-friendly interface.
Bibliotekariens roll i läsecirkeln. En studie av hur sju bibliotekarier vid folkbibliotek ger uttryck för sin litteraturförmedlande roll i läsecirkeln
The aim of this study is to look at how librarians express theirpart in reading groups organized by public libraries. Thestudy is based on interviews with seven public librarians insouth regions of Sweden. The main theory used to analyse isfound in the article Bibliotekaren som litteraturformidler(1994) written by the Norwegian librarian Jofrid KarnerSmidt, where she talks about five different roles that alibrarian can have in this context and how they appear. Threeof these roles were used in this study: the pedagogue, theliterature expert and the marketer.The interviewed librarians mostly had a similar view on howthey look at their role in the reading group. They saw theirpurpose as to provide all kinds of people with a possibility tojoin in discussions about mutual interests and share variousopinions about books.
Mekanisk integration av en IR-detektor i en Stirlingkylare
The master thesis ?Mechanical Integration of an IR-detector in a Micro Cooler? has beenperformed at FLIR Systems AB in Danderyd. FLIR Systems is a world leader in the design,manufacture and marketing of thermal imaging camera systems.The thesis project is divided into to two areas, Production Method and Noise.The Production Method concerns the positioning of a detector on the cold finger within the IRcamera.The detector has to be positiond with very high accuracy at the center of the cold finger,so it can be placed in line with the optical axis to avoid movement of the picture during zooming.The positioning of the detector is at present done with the help of specially designed guides on aplate on top of the cold finger. The design workes well but the special machining needed for thisplate is very expensive.The goal concerning the production method was to derive a new more cost effective method forthe assembling and positioning of the detector on the cold finger by replacing the guides on theplate with a reusable equipment or some other alignement operation.Several concept ideas have been generated with the help of concept generation methods in theform of concept classification trees and concept combinational tables. Two of these conceptswere selected to be further refined.
Utformande av digitalt ljudboksomslag
Den digitala ljudboken blir allt mer populär bland konsumenterna.
Förlaget Bonnier Audio har en hypotes att den fysiska ljudboken
kommer försvinna och att den digitala ljudboken kommer ta över. Men
hur ser egentligen den digitala ljudbokens omslag ut? Skulle man kunna
kombinera olika målgrupper och ändå få fram ett säljande omslag?
Jag tog kontakt med tre olika fokusgrupper för att förstå vad
målgruppen med normalseende hade för behov och tankar kring
ljudböcker. Därefter kontaktade jag även en synskadad för att ta reda på
vad av mitt material från fokusgrupperna jag skulle kunna använda för
att binda samman de två skilda behoven.
Med hjälp av litteratur har jag sedan diskuterat kring olika aspekter
som kan tilltala, hjälpa eller tydliggöra de digitala omslagen.
Det viktigaste jag kommit fram till i min undersökning är att färg
har olika betydelse för den synskadade och personer med normalseende.
Att de två olika målgrupperna använder sig av färg på olika sätt anpassat
efter deras egna specifika behov. Men att man kan formge ett digitalt
ljudboksomslag genom att använda sig av ljusvärde och kontraster för att
få fram ett funktionellt omslag som tilltalar båda målgrupperna..
Administrativ styrning möter akademisk frihet Om Lunds universitets översättning av populära organisationsrecept
In a world of ?formal organizations?, which is constantly exposed for institutionalized super standards and ideas of a what a modern orgnization should be like, the pressure for changes are strong. This is the environment in which Lund University finds itself. Ideas in the beginning of the 21-century is concerning a stronger emfasis on steering, centralisation, re-hieriarchyzation, standardised processes and a new regulation concerning internal control. Through theories of new institutionalism, with conceptions as organizational identity and the expectations of adapting to new ideas, can you track the translation and adaptation that the ideas go through at the university- a decentralised organization where not only freedom has been a concept for the academic parts, but also for the administration.
Mät och loggningsutrustning för spänningstransienter
To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.
Direktsamplande digital transciever
Master thesis work at ITN (Department of Science and Technology) in the areas of A/D-construction and RF-circuit design. Major goal of project were to research suitable possibilities for implementations of direct conversion in transceivers operating in the 160MHz band, theoretic study followed by development of components in the construction environment Cadence. Suitable A/D- converter and other important parts were selected at the end of the theoretic study. Subsampling technique was applied to make A/D sample requirements more realistic to achieve. Besides lowering requirements on A/D-converter it allows a more simple construction, which saves more components than subsampling adds.
Installation av övervakningssytem ombord på fartyget M/S Andromeda
This report is regarding an electrical installation of an alarm system on a post fishingboat called Andromeda. The background of the installation was an earlier andinadequate alarm system that led to a motor failure. The ship was taken out of serviceand was sold to Björn Magndahl who rebuilt it to a yacht.The project was conducted partly by developing the existing systems, partly bydocumenting the work by means of electrical blue prints. Except the alarm systems, aninstallation of the frequency control unit for the bow thruster was installed.The installation was working fine and the outcome of the documentation was handedover in a form of a binder during the test drive of the systems and the assignment wasapproved..
Stenmaterial vid asfalttillverkning
Denna rapport beskriver arbetet med utvecklingen av en ny modell för kaplanturbiner. Utvecklingen bygger på två kopplade differentialekvationer som under arbetets gång anpassats och implementerats i turbinmodellen.Modellen beskriver hur vattenflöde och turbinmoment påverkas av avvikelsen från den optimala kombineringskurvan för vinklarna på turbinens ledskena och löphjul, och är anpassad för ett referensaggregat med tillgängliga provdata. Även övriga enheter i vattenkraftaggregatet modelleras och sätts samman med frekvensregulator och elnät för att simulera aggregatets reglerstabilitet i önätsdrift.Verifieringen av turbinmodellen sker genom försök att återskapa de befintliga verkningsgradskurvorna med hjälp av modellen. Resultatet visar en god följning av de verkliga kurvformerna, dock med något lägre maximal verkningsgrad.Verifieringen av önätmodellen sker genom att prova stabiliteten i nätfrekvens och turbineffekt vid stegpålastningar. Resultatet ger en stabilare reglerstabilitet än i verkligheten, men uppfyller ändå förväntningarna på en fungerande modell.This report describes the development of a new kaplan turbine model.