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686 Uppsatser om Measuring instruments - Sida 21 av 46
Optical and Structural Properties of CuxS Quantum Dots Concerning H2O/Ethanol Solvent Ratio
Nanotechnology, one of the most interesting sciences today will no doubt have an enourmous impact on tomorrow's society and industry. One of the most interesting nanomaterial that has been discovered is the semiconductor quantum dot (QD). This material shows interesting novel properties such as a size-dependent band gap, which is an effect caused by the quantum confinement effect in all three dimensions. Due to this phenomenon the absorption spectrum can be tuned to the desired value by adjusting the size of the QD.This thesis aims to investigate how the solvent ratio of H2O/Ethanol affects the optical and structural properties of copper sulfide QDs manufactured in a chemical synthesis way using modern microwave heating. The process of manufacturing QDs using chemical synthesis often involve a capping-agent to prevent the QDs from agglomerate into bigger structures.
Mezzanine - en efterställd fordring: En utredning av rättsliga förutsättningar vid obestånd för fordringsmezzanine
Mezzanine is a collective term for hybrid instruments on the leverage finance market, offered as an alternative to traditional debt. As a hybrid, mezzanine combines elements of debt and equity financing. Mezzanine appears, in its most common shape, as subordinated to the senior debt, but ranks higher than pure equity. Reminiscent of security interests, the main importance of subordination is upon the default of the borrower. Therefore, the aim of the thesis is partly to investigate the legal prerequisites for a solid subordination of mezzanine financing, and partly to explain the consequences of subordination in a default.
Datormedierad kommunikation i politikens tjänst : En studie av attityder till datormedierad kommunikation
This essay examines the recent electoral success of the Sweden Democrats (SD) in the Swedish municipal election in 2006 and 2010. By using statistical methods it aims to explain which of three contradicting theoretical frameworks best can explain how a populist radical right party could penetrate one of the most stable party systems in the world. The theoretical approaches tested in this essay are: a demand-side, an external supply-side and an internal supply-side approach. By using theoretically anchored proxies to determine the effect of the contradicting theoretical approaches this essay concludes that the internal supply-side explanation measuring the local party organizational ability of the SD had the most substantial effect when it comes to explaining their recent electoral success in the Swedish municipalities, as opposed to a more commonly believed demand-side driven explanation..
Kombinerad DSP- och FPGA-lösning för en bildbehandlingsapplikation
This Master's Thesis describes the design of a new system where a digital signal processor has been added to an existing imaging system consisting of field programmable gate arrays. The new system will offer a higher degree of flexibility by considerably shortening the design time and make it possible to implement more complex algorithms than the existing ones. The choice of system architecture and a test implementation are discussed. The test implementation consists of a program for the digital signal processor and VHDL code for one of the field programmable gate arrays. The code for the digital signal processor was designed for testing on an evaluation board from Texas Instruments.
Sponsring av idrott: en empirisk studie om interaktionen
mellan företag och elitidrott ur ett företagsperspektiv
The purpose of this thesis is to gain a deeper understanding of Swedish companies? use of corporate sponsorships as a tool for communication. The research describes motives and goals of corporate sponsorships, the selecting process and methods used in evaluating its effects. The empirical data has been colleted through interviews with two companies sponsoring athletics at a top level in Sweden. The study shows that the principal objectives and motives companies have with sponsorships are related to brand exposure, image improvement and relationships.
Relationen mellan motivation och målorientering, upplevd förmåga samt uppfattat motivationsklimat hos gymtränande kvinnor och män
The purpose was to examine relations between motivation and goal orientation, perceived ability and perceived motivational climate among persons working out in gym. Another purpose was to study differences in motivation, perceived ability and motivational climate among men and women. The final purpose was to study interactional effects on the dependent variable motivation. The participants were 59 men and 69 women. The instruments used were Task and Ego Goal Orientation in Sport Questionnaire (TEOSQ), Harter´s Competence scale and part of Mahoneys R-5 test.
Underkambriska böljeslagsmärkens bildningsmiljö : Ett försök att fastställa fossila ripplars avsättningsmiljö med hjälp av recenta sandbottnar
ABSTRACTThe fauna of the Lower Cambrian is far from fully understood, as is the environment of that epoch. Some of the most crucial moments in the history of evolution takes place during this epoch; the Cambrian explosion and the appearance of ecosystems as we know them. That makes it an important period to investigate. Doing so, the Lower Cambrian offers a lot of problems, one of which is that body fossils are seldom preserved. That has often left us with trace fossils to create an image of the Lower Cambrian life, but also some bedrock features such as ripple marks.The main purpose of this work has been to investigate the possibilities of relating the wave lengths and forms of recent wave-generated ripples to fossil ones, and also to evaluate the methods for that kind of comparison.
Skalkonstruktion : Med inriktning mot hållfasthet och dämpning av ljud
The sound part is mainly practical and is dependent on concepts that have been tested through measuring with a sound level meter. The design part is more theoretical and has been verified with CAD models and finite element analysis.With a sound damping hood on the compressor the sound level is reduced with up to four dB. An optimized absorbent for the compressor space gives a reduction with three dB. By using the insulation for the heat water tank as absorbent we can see a sound reduction on the lover octave bands. A reduction like this is elsewhere hard to achieve as at it requires thick absorbents.By changing the today?s insulation to the heat water tank to a form of polystyrene polymer insulation the weight from the heat pump above can be transferred to the stable heat water tank.
Klassificering och värdering av finansiella instrument : Ett tillförlitlighetsperspektiv
During the financial crisis voices were raised towards the regulatory framework IAS 39 recognition and measurement of financial instruments and pointed out that it was inadequate. The complexity of the framework contributed to the fact that it was difficult to apply. IASB accelerated the modeling of the new to be regulatory framework IFRS 9. In this study we will focus on the reliability of accounting information, which is an important aspect from the stakeholder?s point of view, for example, to be able to make the best decisions the accounting information should be proper.
Nyckelharpan under 2000-talet : Ett instruments spridning och användning
I och med att nyckelharpan blivit allt populärare, har den spridit sig över Sverige och även utanför landets gränser. Som nyckelharpsspelman och lärare på nyckelharpa, väcktes ett intresse för att undersöka hur nyckelharpans spridning ser ut under 2000-talet. Syftet är att få vetskap om hur och till vilka nyckelharpan spridit sig och vilka nya användningsområden den kommit att få. Undersökningen genomfördes som litteraturstudier med jämförelser av litteratur nära knutet till ämnesområdet. Resultatet av undersökningen visar att nyckelharpans spridning under 2000-talet främst skett genom olika medier där Internet spelat en framträdande roll. Den globala spridningen är betydande med nya utövare, främst i USA men även i flera Västeuropeiska länder.
Förklassik för knäppinstrument : En studie kring en sonat för Cittra av Johan Wikmanson
AbstractHåkan Ljung: Förklassik för knäppinstrument. En studie kring en sonat för cittra av Johan Wikmanson. Uppsala universitet: Institutionen för musikvetenskap, C-uppsats för 60 poäng, ht 2005.My main purpose with this thesis is to highlight a piece of music written for a relative of the 18th century cittern. This sonata, composed around 1780, is a well thought composition written in a pre-classical style. The composer of this music is Johan Wikmanson (1753-1800) who is mostly known for his string quartets, songs and piano pieces. Because of the importance for the music as a whole, one task is to reconstruct the second movement from severe errors. This was carried out by doing an overall analysis of the two movements themes, motives and structures.Since many arrangements for plucked instruments occurred by other composer's works, my second aim is try to tie this Sonate as an original version written by Wikmanson himself. As a part of my main purpose, the reader will also receive a short presentation of the Swedish cittern designed by the Royal instrument maker Johan Öberg the elder (1727?-1779) with a description of its connection with the manuscript. .
Styrkor och svagheter med problembaserat lärande-en metastudie
AbstractProblem-based learning (PBL) was from the beginning developed in medical school, but is today used in education in other programmes as well. Investigations about PBL have been conducted in different disciplines and there is also metastudies. In this paper, a metastudy of 8 bachelor degree papers have been conducted. The questions answered were: which methods were used to investigate PBL in primary, lower secondary and upper secondary school,which advantages were found in working according to the PBL method, which disadvantages were found in working according to the PBL method and did teachers and students views about advantages and disadvantages about PBL as a method differ and if they did, how? The results showed that mostly qualitative methods were used to investigate the PBL as a method, mostly abilities of social qualities and independence were trained in working according to PBL, a disadvantage was that working according to the PBL method was considered more resourse consuming than traditional teaching methods and teachers and students views about PBL did not differ considerably.
Biogasanvändning vid Käppalaförbundets Reningsverk: ? en värdering av miljöeffekter
This thesis calculates and compares the values of improved environmental quality due to future possible investment alternatives in biogas production facilities at Käppalaförbundets Reningsverk (Käppala Sewage Treatment Works) in an attempt to determine which alternative yields the highest such value. Käppala faces three investment alternatives for the usage of biogas. The alternatives are production of vehicle fuel, district heating and thirdly, heat and power production. Estimates of the value of environmental change are calculated for each of the three investment alternatives, and these estimates are then compared. The environmental change in question is the change in discharge levels of carbon dioxide (CO2), nitrogen oxides (NOx), sulphur dioxide (SO2) and particle matter.
Konfrontationsbenämning av substantiv och verb hos svensktalande vuxna utan anomi
Confrontation naming is commonly used in speech and language pathology to diagnose neurogenic communication disorders and evaluate naming ability. The existing Swedish assessment instruments for adults consist of pictures depicting nouns. In this study, parts of the instrument An Object and Action Naming Battery were used, containing pictures depicting both nouns and verbs. The study?s purpose was to explore the degree of difficulty in the material, based on the naming of the participants, and examine whether different variables correlate with the results in confrontation naming.
Fukthaltsförändringar för skogsbränsle : En jämförelse av torkförloppet i grönrisskotade och brunrisskotade vältor
In 1994 a new Forestry Act was accepted in Sweden. One of the aims of the law is to raise consideration forpreservation of biodiversity. Since the new law got accepted and some time has passed, there now lie someinterest in examining whether the law has been effective towards its purpose. Methods suitable for analysishave been examined during this study. The content of this pilot study is based around five parameters whichcan be used to validate the effects of the new law.