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4389 Uppsatser om Sound level measurement - Sida 58 av 293

DSP-baserat instrument för fjärrmätning av larmnät

Fält Elektronik AB i Kalix utvecklar och tillverkar bland annat larmsändare för fast uppkopplade larmnät. Fast uppkopplade larmnät används för att åstadkomma övervakad och säker överföring av larm och annan information mellan tekniska system för skydd och säkerhet. Larmöverföringen är ständigt övervakad från larmanläggningen ända fram till larmcentralen. Ett problem som idag finns i larmnät är att om man tappar kontakten med en larmsändare så vet man bara att man tappat kontakten, men inte varför. Därför vill man nu utveckla ett instrument som kan mäta och kontrollera vad som orsakar att uppkopplingen bryts t.ex.

UNGDOMAR OCH DERAS UPPFATTNINGAR AV MODEVARUMÄRKEN : En studie av varumärkena Gucci, H&M och Canada Goose bland gymnasieelever i Stockholm.

ABSTRACTTitle: Teenagers and their perception of fashion brands (Ungdomar och deras uppfattningar om modevarumärken)Number of pages: 42Author: Louise KindblomTutor: Göran SvenssonCourse: Media and communication studies CPeriod: Autumn term 2007University: Division of Media and Communication, Department of Information Science, Uppsala universityPurpose/Aim: To achieve a deeper level of knowledge and a better understanding of high school teenager`s perception of the three fashion brands Gucci. H&M and Canada Goose and too distinguish potential gender related differences in their perceptions.Material/Method: A questionnaire about fashion brands delivered to three schools in the Stockholm area.Main results: Teenagers perceptions of the three fashion brands Gucci, H&M and Canada Goose are more different than similar. This differences in teenagers perceptions are discernible in a comparison between the most usual and unusual associations that are related to each of the brands. Gucci is associated with success, wealth, excitement and uniqueness. H&M is for example seen as earth-bound and has in a comparison with the other brands reached the highest level of positive associations.

Optimering av ultraljudssändare- och mottagare avseende räckvidd, strålningsvinkel och energiförbrukning

Embedded Systems Lab at Umeå University is currently part of a research project with the purpose to examine the behavior of dairy cows inside a barn. Each cow needs to be tracked with a precision of 50 cm, and since GPS-technique has poor functionality at indoor environments, an indoor positioning system needs to be developed.Embedded Systems Lab has already developed an indoor positioning system using IR-light and radio, but since this system demands extensive infrastructure and is rather expensive, an alternate positioning system using ultrasonic pulses and radio is being examined.In this report the range, beam angle and current consumption of ultrasonic transmitters- and receivers are investigated. Three different driver stages for the transmitter is tested, and two amplifier solutions for the receiver. The report also describes how the length of the transmitted ultrasonic pulse affects the received signal, accessibility of a ?shadowed? signal, and the effect of different sound frequency..

Att måla läppstift på grisen: En fallstudie om den interna interaktionen mellan Inköp och Miljö i arbetet mot hållbar utveckling

During the last years, the importance of sourcing in firms has increased. Globalization, fierce competition and an increased level of outsourcing are common explanations to why firms have highlighted the potential to realize savings and the value creation that the Purchasing department can generate. One trend that follows in parallel with globalization is an increased pressure from society on firms to take responsibility for the impact that its products and services have on the environment. This responsibility creates even more attention as outsourcing involves trade with suppliers in low wage countries, where the level of environmental and social responsibility is not always satisfying. The Purchasing department, the firm?s interface with suppliers should therefore, together with the firm?s Environmental department, play a key role in the firm?s contribution towards sustainable development.

Hälsopromotion som ledningsstrategi : -ett sätt att få medarbetarna att identifiera sig med organisationen

Health and physical exercise has a become trend in today's society and the work with health promotion has increased in organizations. This is not only a way for organizations to get healthier and more efficient employees, but also a way to regulate the employee?s identity by getting them to identify with the organization. This bachelor essay studies how health promotion can be used as a management strategy. This is done by interviews and by performed observations at the recruitment company, Adecco, in the Stockholm region.

Får idrottande elever högre betyg? : en fallstudie på tre samhällsvetenskapliga program för att visa eventuella samband mellan fysisk aktivitet och höga betyg

Abstract AimThe purpose of this study has been to investigate the possible differences in grades and attitudes towards further studies that can be explained by the student?s level of physical activity. The questions we wanted answers to were:- Does students in more sports-oriented programs have better grades than students in more theoretical programs?- Is there a relationship between physical activity and study-results?- Are there any differences in attitudes towards further studies for students at the different programs?- Which other variables could be affecting the students grades?Method The extent of this study has included 3 municipal schools and 6 classes (2 from each school) ? in all 119 students and 6 teachers. 3 different social sciences programs have participated ? two sports-oriented and one without any sports-oriented concentration .

Utvärdering av Raman- och IR-spektroskopi, differentiell svepkalorimetri och dielektrisk spektroskopi för materialstudier på choklad

On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.

Ethernet-baserat interkommunikationssystem för militära fordonssystem

The result of this master thesis report describes the advantages and the drawbacks that will arise when implementing an Ethernet based intercommunication system in military vehicles. The report presents a possible solution and describes how different sound applications will be implemented into the suggested solution. The report show that IP LAN in vehicles leads to more advantages than drawbacks. The main advantages are that all kind of media can share the same LAN and that there is a lot of knowledge of this technique in the civil area. The main drawback is about delay.

Användandet av samlingsprover för att bestämma besättningsstatus för smitta med Dictyocaulus viviparus hos förstagångsbetande nötkreatur :

Infection with the bovine lungworm - Dictyocaulus viviparus - is occasionally a problem in Swedish cattle herds. The infection could act in synergism with other infections such as Corona virus to create a poorer welfare and productivity in cattle. Studies have shown that a diagnosis can be made with both the Baermann method and with an ELISA. In Norway diagnosis of BVDV on a herd level is attained through pooled serum samples. The question was raised whether pooled serum samples could be used in a similar fashion to attain status on a herd level for lungworm.

Utveckling av dataanalysprogram för Opcon Powerbox

Opcon Powerbox is a product developed by Opcon together with the underlying company SRM (Svenska Rotor Maskiner) where surplus heat from the industry is used through an Organic Rankine Cycle (ORC)?process to produce electricity. An ORC-process is a thermodynamic circle process in which a refrigerant is used as the working fluid. The refrigerant makes it possible for the circle process to operate at lower temperatures than the conventional Rankine process.In this master?s thesis a data analysis software for the Opcon Powerbox has been developed in which measurement data is retrieved and handled from the Opcon Powerbox.

Interaktivreklamfilm-en CD-ROM-produktion för Alding Webshop Maker

Denna rapport visar hur en reklamfilm för en specifik produkt har utvecklats, i form av en CD-ROM-produktion. Företaget Alding AB har efterfrågat reklamfilmen för sin produkt Alding Webshop Maker 1.3. Flera olika programvaror har använts vid genomförandet, varav ljudredigeringsprogrammet Sonic Foundry Sound Forge 5.0 och bildredigeringsprogrammet Adobe Photoshop 5.5 hör till de mest frekvent använda. Med hjälp av programmet Macromedia Director 7.0 har sammanställningen av reklamfilmen utförts. Rapporten behandlar de olika problem som uppstått under arbetets gång samt hur de har kunnat undanröjas.

Är företagets lönsamhet och finansiella ställning avgörande för beslut beträffande företagets expansion?

Even if the main purpose is to decide if the companies profitability and financial position is a determining factor for its growth, the purpose is to determine if there are any differences between big and small companies in there economical positions then they grow, in the selected industry. This thesis is mainly a quantitative study. The selected industry for the study is extraction of turf. The financial measurement that most clearly differ the growing companies from the not growing companies or the companies that didn?t change there amount of employees was the returns of the companies own capital. It was also the returns of the companies own capital there the main difference existed between the big and the small companies.

Smärtlindring i samband med vaccination av fisk :

Vaccination of fish can be assumed to cause pain. This study was designed to see if we can minimize the suffering of fish following vaccination. Fishes are cold-blooded animals and thus more primitive than warm-blooded animals. Despite this, many organs, e.g. the nervous system, have the same basic structure as that of other vertebrates. The fibre system for conducting pain is more diffuse than in humans.

Organisationen, ledaren, individen: vem ansvarar för hälsan? En kvalitativ studie om det hälsofrämjande och ohälsoförebyggande personalarbetet i Malmö stads stadsdelar.

The purpose of this study was to examine health promotion and ill-health prevention in the workplaces of the City District Committees in the City of Malmö. More specifically, we wanted to find what types of health problems there were and what kinds of strategies were applied to prevent them. Furthermore, the aim was to examine whether the leaders of the City of Malmö saw any effects of the strategies in use and if so, which. Finally, the intention was to compare our empirical results to previous research in the field of health promotion and ill-health prevention in workplaces. We conducted a qualitative study consisting of semi-structured interviews with five leaders in different levels, two personnel secretaries, two employees assigned to improve the health of the personnel in the City Districts, and one safety representative.

Dimensionering av industrilager för biobränsle :

The aim of this study was to develop a simple model for calculating stock costs for bio fuel at Billerud Karlsborg and subsequently recommending a suitable stock level of bio fuel. The stock components considered in the model are GROT (branches and tops), bark, dry wood chips, raw wood chips from barking and sawdust. The calculations are based on a probability distribution of historical deviations between ordered and delivered volumes. The model presents two different ways to manage the supply in case of irregular deliveries. The first way is to stock enough volume to cover the deviations and the second way is to compensate with a quick purchase from the spot market (at extra high purchase prices).

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