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4906 Uppsatser om High-frequency - Sida 20 av 328
Kartläggning av kapacitetsutnyttjandet och ställtider på Stålöv AB : Survey of the use of capacity and set up times at Stålöv AB
The aim of this report is to analyse the use of the capacity at the CNC (computer numerical control) cutters and show how the level of set up time for these cutters at Stålöv AB. This assignment is concrete whereas there are no subjective questions to this matter and there are only cold figures presented.Production economy is getting more important as the competition hardens and there are several different ways to increase productivity and efficiency in a company. In order to increase productivity and efficiency work studies are used to, through an analysis, find developments in methods that result in improved work methods and to establish the time that are used. Increased production of different parts and customer driven production in combination with increased demands on rationalisation of capital have led to an enlarged interest for shorter set up times in the production.To point out the use of capacity and the set up time of the cutters at Stålöv AB we used frequency studies. Frequency studies are work measure methods based on random observations on predetermined events to calculate the relative occurrence of these events.
Majsensilage i Sverige
Maize for silage has been used as fodder in different parts of the world for a long time and has recently become more common also in Sweden. Our cold climate has been a problem as maize is very sensitive to low temperatures and frost. With new varieties and better techniques for cultivation it is now possible to grow maize in the southern and middle parts of Sweden. As for the north of Sweden the length of the cultivation season is a limiting factor as there are too few days with temperatures of over +10 ºC. Maize is well suited for silage making but oxygen-free conditions are required.
Ett extra år i grundskolan
The basic idea behind an extra year in school was to offer students who have not read nine years in Swedish primary school an opportunity to prepare themselves to pass a high school. This first group that went an extra year in school consisted of eleven students who completed their studies and went on to high school. During the time the group expanded, the school received students from various schools in the same municipality. During the follow-up of these groups could be noted that there were many students who registered, but only few students completed their studies and went on to high school. The purpose of this study was to explore why leadership in the classroom is important for students.
Digital divide eller digital opportunity i Anacostia High School, Washington D.C. : en studie baserad på sistaårselever i High School
Purpose/Aim: The goal of this thesis is to examine access and knowledge computers and the Internet among the senior-year students of Anacostia High School. Do the students of this facility have the same opportunity as the residents from better socioeconomical backgrounds or are they being excluded from the technology? Material/Method: To approach the thesis goal I have used a quantitative method. More specifically, a questionnaire was handed out to the senior year students at Anacostia High School. Main results: The study has shown that most of the students of Anacostia had in some way access to computers and Internet.
Ultraljud som diagnostiskt hjälpmedel vid subklinisk mastit hos ko :
This study was performed to investigate the possibility to use ultrasonography as a diagnostic tool for sub-clinical mastitis in dairy cows. Five cows with high cell counts, and four cows with low cell counts were selected as cases and controls, respectively, and their udders examined with ultrasound during a 5 week period. The image of the udders of cows with high cell counts exhibited small, hyper-echoic, rounded foci, approximately 1 cm in diameter, near the milk cisterns and the base of the teats. These changes were not found consistently in all cows with high cell count, however. Ultrasonography may be a valuable complementary tool in the diagnosis of sub-clinical mastitis in dairy cow, but more cases need to be monitored before its full value can be ascertained..
BIM vid installationsprojektering
Planet rendering plays an important role in universe visualization and geographic visualization. The recent tools and methods allow better data acquisition, usually with very high resolution. However in computer graphics, there is always the limitation on the resolution of geometry and texture due to numerical imprecision. Not many applications can handle high resolution data effectively.This thesis introduces, Implicit Surface Scene, a level of detail scene management inspired by dynamic coordinate system and SCALEGRAPH? which change over time depending on the current camera position relative to the planet surface.
Friluftsliv på gymnasiet : En jämförelse mellan friluftslivsinslag i tre svenska gymnasieskolor
AimThe purpose with our study has been to investigate if upper secondary high schools in the south of Sweden, Stockholm and north of Sweden follow the outdoor education regulations stated in the curriculum (Lpf-94). Moreover, we aim to study if the teachers? previous experiences as well as the students affect the outdoor education. Finally, the purpose is to find out how the outdoor-life-education can be improved. These are the research questions:o How do the chosen high schools follow the outdoor education regulations stated in Lpf-94?o What obstacles, advantages and differences exist between the outdoor-life-education in these high schools?o In what way do the teachers? outdoor life experiences influence their education at school?o How can the students influence the outdoor education in their High Schools?o How can outdoor education be improved?MethodThe study is based upon data collected from four interviews with PE ( physical education) teachers from four different high schools.
Ultraljudsmätare för bubbelfälla
This bachelor thesis is about an ultrasonic sensor, implemented in a bubble chamber in Artis. The sensor consists of the piezoelectric sensor and an electronic control circuit. The control circuit consists of a programmable microprocessor, PIC18F2420 and a circuit, which sends the excitation signal to the piezoelectric sensor, and later receives the echo. This bachelor thesis consists also of a theoretical study, which examines different techniques of liquid level sensing in a chamber. The study discusses which factors are important in liquid level sensing and examine accepted methods.
Psykosocial arbetsmiljö och besvärsförekomst bland flygplanslastare
The purpose of this study was to describe perceived psychosocial work environment and musculoskeletal complaints among baggage handlers, and to evaluate whether there is any linear relationship between them. The study is a questionnaire based cross-sectional study, and part of an ongoing larger project. Therefore, the number of forms has been limited to those that were collected in the project by 2010-11-25 (N=117). The questions analyzed in the study come from the Copenhagen Psychosocial Questionnaire and ?Nordiska Ministerrådets formulär om besvär i rörelseorganen?, respectively.
Högfrekvenshandel ? Ett hot mot de finansiella marknaderna?
?Högfrekvenshandel har de senaste åren växt till att bli en betydande kraft på de finansiella marknaderna och således även fått mycket medial uppmärksamhet. Den här medieuppmärksamheten intensifierades den 6:e maj 2010 då "Flash-krashen" inträffade på Dow Jones indexet i New York och påverkade marknader över hela världen.Vår avsikt med den här kandidatuppsatsen är att kritiskt granska högfrekvenshandeln som fenomen samt den diskussion som förs angående ytterligare reglering av handeln. Detta görs genom en inledande period av litteraturstudier som kompletteras med djupintervjuer av olika aktörer på marknaden.Våra resultat visar att högfrekvenshandeln inte för med sig så stora negativa effekter som media målar upp, och att den forskning som gjorts på ämnet indikerar att handeln främst tillför positiva effekter i form av ökad likviditet och minskad volatilitet.Uppsatsen behandlar även dagens regleringssituation och analyserar de förslag på åtgärder som har lagts fram på EU-nivå. Vår analys visar att många av de förslag som diskuteras är direkt missriktade och inte adresserar det egentliga problemet? en situation som kantas av oklara roller gällande tillsyn och övervakning..
Can increased activity recorded with help of activity monitoring sensor indicate an upcoming calving?
The purpose of this study was to find out if motion movements, e.g. number of lying bouts and lying time with a registered activity monitoring sensor can detect an impending calving and thereby be used as a measure and an indicator for an upcoming calving. For this, automatically step sensors were used and were attached to one of the cows? hind leg. The sensor registered the individual step and movement activity of the cow.
Ungdomars läsvanor och hur vi skulle kunna inspirera ungdomar att läsa mer skönlitteratur
AbstractThe purpose of this work is to try to find out how young people's reading habits among students look at different types of secondary school, ie. both theoretical and practical, and what factors might encourage them to read more. My questions have been; do young people read today? Is there any difference between city, gender or program? What can a teacher do to inspire young people to read more? I have made a questionnaire survey among different students at two different high schools in Skaraborg. The first school is a high school located in a medium sized town, where I made inquiries to the scientific program, social program, Business and Administration Program and the Electricity Program.
Gymnasiebibliotekarien ? informationsspecialist och pedagog: om gymnasiebibliotekariens yrkesroll och dess angränsningar till lärarrollen
The purpose of this study has been to examine different aspects of the professional role of the high school librarian, especially the educational role, and its delimitations to the teacher's role. The methods that were used were studies of literature within the subject area and qualitative interviews with high school librarians and high school teachers of social studies. Andrew Abbot's theory on the system of professions was used in the analysis of the results of the study. The high school librarians who were interviewed enabled access to information, both intellectually and physically. They helped students develop information seeking skills and they functioned as educators and counselors.
Omkonstruktion av friskluftsventil
Genom konstruktion och tillverkning av prototyper samt med hjälp av ljud- och flödesmätningar av dessa, tillsammans med standardmodellen, har vi lyckats förbättra flödet genom ventilen Al-db 450, producerad av Fresh AB i Gemla. För ljudmätningar har en testrigg konstruerats och tillverkats..
På personlig frekvens - En studie av svenska B2C-företags inställning till RFID inom lojalitetsprogram
Kundrelationerna i svenska B2C-företag är inte lika goda som de var för 60 år sedan och de är inte lika goda som företagen skulle önska att de var. Forskningsfrågan och syftet med uppsatsen var därför att förklara vad som påverkar svenska B2C-företags beslut att utnyttja Radio Frequency Identification (RFID) som identifieringsteknik för att personliggöra kundrelationer inom sina lojalitetsprogram. Studien utfördes som en fallstudie då vi undersökte hur två stora svenska B2C-företag, IKEA Family och ICA, arbetade med lojalitetsprogram, identifieringstekniker och hur de ställde sig till alternativa identifieringstekniker gestaltat genom RFID. Studien utfördes med deduktiv ansats genom inledande teoriinsamling och därefter genom intervjuer med en intervjuperson på vardera företag. De slutsatser som sedermera kunde dras var att tillräcklig kunskap saknas kring RFID och dess potential, att det är en ekonomisk fråga och en stor investering för företag som inte brukar vara först att ta till sig ny teknik som dessutom inte är standardiserad samt att det skulle kunna kränka kundernas integritet och därmed ha motsatt effekt till lojalitetsprogrammens syfte..