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1230 Uppsatser om Dynamical mass-balance modelling - Sida 19 av 82
Analys och modellering av ljusbåglängdsregleringen i pulsad MIG/MAG-svetsning
This master thesis deals with problems in the arc length control in Pulsed MIG/MAG Welding. The main problem is that it is not possible to measure the arc length. In the present solution the voltage over both the electrode and the arc represents the arc length. To improve the arc length control a model of the electrode melting has been built. One output from the model is the voltage over the electrode and with this voltage together with the measured voltage it is possible to calculate the voltage over just the arc.
Akustisk mätning av U-värde
This pre-study investigates the possibility of U-value measurements through an acoustic method. A hypothesis about an acoustic model built on acoustic theories combined with U-value theories is presented to answer the questions:
? Can U-value theory be combined with acoustic theories?
? Can the coefficient of heat be affirmed trough an acoustic measurement?
The idea for this dissertation begun with a logical idea in mathematical similarity, between the coefficient of heat transmission units and sound intensity units.
The U-value theory is based on assumptions such as initial resistance for inner walls and initial resistance for outer walls. The resistance in the material is interpreted through sound intensity theory.
The argument is built upon mass law theory, which means if the frequency or thickness of the material layer doubles it implies an increase of sound reduction by 6 dB.
Förhållningssätt och bemötande i studie- och yrkesvägledningssamtal av elever uppväxta inom Jehovas vittnen
This essay aims to investigate how students raised in Jehovah's Witnesses have experienced their career counseling during their middle and high school education.
My main objectives are, based on the testimonies of former Jehovah's Witnesses, to investigate how career counselors can find a strategy to approach these students in a non-threatening way. I also try to take into account the contextual elements which are of great importance when counseling students raised as Jehovah's Witnesses.
A qualitative study has been carried out with five informants with a background in the movement. The material has then been analyzed using a qualitative, narrative method.
Interaktiv Produktpresentation åt Abu Garcia
Detta projekt har producerats i samarbete med Abu Garcia i Svängsta, Blekinge. Vårat projekt är en interaktiv produkt presentation gjord i flash med inslag av 3d, video och ljud. Våran tanke är att användaren ska kunna se hur en Ambassadeur Record fiskerulle ser ut både på insidan och utsidan, hur den fungerar och vad som gör den så unik. Det finns också video filmer som beskriver tillverknings processen, och hur man som förstagångs användare använder en Ambassadeur rulle. Design och bakgrundsljud är anpassad så att den ska väcka en känsla av fiske och fridfull utomhus miljö..
Lönemodellens påverkan på fastighetsmäklares balans mellan familje- och arbetsliv
Titel: Lönemodellens påverkan på fastighetsmäklares balans mellan familje- och arbetsliv.Nivå: C-uppsats i ämnet företagsekonomi, 15 hp.Författare: Desiree Apell och Liza MalmqvistHandledare: Maria Fregidou-Malama, Ernst Hollander och Pär VilhelmsonDatum: 2014 ? maj Syfte: Denna studie avsåg att förklara hur fastighetsmäklare upplevde att deras lönemodell påverkade deras balans mellan familje- och arbetsliv och i vilken utsträckning de ansåg att lönemodellen var stressande eller motiverande.Vidare avsåg den här studien att till viss del validera en framväxande teori, genom att besvara huruvida tre faktorer, kön, karriärambitioner och föräldraskap påverkade fastighetsmäklares upplevda balans mellan familje- och arbetsliv.Metod: Tillvägagångssättet för arbetet var kvantitativa studier i form av mailenkäter.Resultat & slutsats: Om respondenten kände sig motiverad av sin lönemodell upplevde de inte att lönemodellen påverkade deras balans mellan familje- och arbetsliv, dock ansåg de att de hade balans i livet. Flexibla arbetstider kan vara en faktor som bidrog till att respondenterna upplevde balans i livet. Individer som upplevde stress ansåg dock att lönemodellen påverkade deras upplevda balans i livet och ansåg även att de inte hade balans mellan familje- och arbetsliv.Förslag till fortsatt forskning: Studiens syfte samt forskningsfrågor behöver vidare forskning för att fastlås eller avslås. Även faktorn flexibla arbetstider bör studeras vidare för att fastställa om den bidrar till balans mellan familje- och arbetsliv hos fastighetsmäklare.Uppsatsens bidrag: Studien kan inspirera franchisetagare eller chefer inom branschen att utforma stabilare och bättre villkor för sina anställda utifrån vår studies resultat..
Det gemensamma bästa kan inte förutsättas : En berättelse om Grupptalan mot Skandia
The subject for this paper is the Class Action against Skandia Association, a civil organization formed in 2003 with the aim of claiming compensation for some 1.2 million life insurance customers. The background to its formation was one of the largest financial scandals in Sweden in recent times, involving a number of questionable affairs within the insurance corporation Skandia and its subsidiaries, most notably the life insurance company Skandia Liv. The interests of both the stake- and stockholders of the company seem, in certain ways, to have been grossly misrepresented. The scandal, as well as the reaction it spawned, pose a number of questions. In this study, we focus on two: a possible, and in many ways apparent crisis in the representation of interests in Swedish society, and the role of civil society in upholding the balance between these interests.We argue that what is often held to be the ?greed? or ?immorality? of individuals in scandals such as Skandia is, to a great extent, a mere reflection of the ?rational? underpinnings of modern-day capitalism.We find that trust has been a key mechanism of control in the relationships between consumers and agents in pension and life insurance markets, and that ?the Swedish model? that distinguished post-WWII Swedish society was a model heavily based on trust towards existing models of bureaucratic governance.
Genetiska och epigenetiska samband mellan näringsförsörjning och fertilitet hos mjölkkor
The dairy cow?s ability to resume estrus after calving and to conceive is affected by their metabolic status after calving. For high yielding cows there is a high risk that the feed intake will not be sufficient to cope with the increased energy demands after calving, and the cow will end up in a state of negative energy balance. Energy balance can be measured in various ways, for example by body condition score or by plasma concentration of several metabolic hormones and metabolites. After calving, endocrine pathways stimulate tissue mobilization; insulin signaling is blocked, the concentration of insulin-like growth factor-1(IGF-1) and leptin decreases, and the concentration of growth hormone (GH) increases.
Modellering av reserv- och nödkraftsystem i JAS 39 Gripen
Simulation is a vital tool during development of JAS 39 Gripen, since money and time can be saved.The Auxiliary and Emergency Power System, AEPS, is a subsystem of the secondary power system in Gripen. It has the function of providing the aircraft with electrical and hydraulical power before activation and after deactivation of the main engine. The system also functions as backup in case of a safety critical problem in the main power supply system. The system basically consists of a control unit and an auxiliary gearbox. The gearbox is driven by an air turbine.
APU:ns betydelse för elevernas studier på hotell- och restaurangprogrammer
The usage of location in mobile applications is becoming more explored as a field, but the ability to implement location-specific data has often been limited and the applications mainly focusing on having information location liked. This thesis aims to explore how to make a mobile application that lets users share and take part of each other?s memories. As well as finding an appropriate balance between location based and location linked messaging..
Utvärdering av två hullbedömningssystem för katt av en djursjukskötarstudent och djurägare
Obesity is a growing global health problem among both humans and cats with the risk of several medical conditions as a result. This can be detected and prevented by body condition assessment methods in order to visualize and detect possible or potential weight problems in cats.To achieve the best results, owner and cat should be introduced to this as soon as possible in their contact with veterinary care.Purina Body Condition System and Walthams Feline Body Mass Index are both morphometric assessment methods that are quick, relatively cheap and simple to perform. 20 cats with owners and a veterinary nurse student participated in a study to compare pet owners and a veterinary nurse student's assessment of the Purina Body Condition System and WALTHAM's Feline Body Mass Index. The body condition assessment methods were compared with each other, and it was investigated which method was preferred, the body condition distribution among the studied cats and if long-haired cats' body condition was more often misjudged. Results of the study showed a significant difference between pet owners and the veterinary nurse student's assessment of Purina BCS with a difference in median of 1.
Prestanda på luftfilter : En jämförelse mellan olika filter till bil
This reports goal is the give BSR AB more information that's useful towards their customers in marketing of their products.It involves tests of different air filters designed for cars and 3D-modelling of Opti-Flow systems. The three models thats being tested is SAAB (93SS), VAG (1.8T) and Volvo (S60). To every brand there are three different models. A orginal- , sport- and an open cone air filter (Opti-Flow).The results indicate that the open Opti-Flow filter has better performance compared to the other cased filters. The sport filters for SAAB and Volvo has better performance then the original filter.
4D CAD och Line of Balance för effektivt betongbyggande
Det finns stor potential i byggbranschen att förbättra produktionsprocessen på en arbetsplats med hjälp av nya planerings- och modelleringsverktyg. En produktionsteknologi som är särskilt intressant att studera är det platsgjutna betongbyggandet. Här utförs många olika, men sammanhängande, moment tätt på varandra och processen styr mycket av andra processer som följer efter detta skede. Det är därför viktigt att kunna planera och kontrollera byggandet med platsgjuten betong med enkla och effektiva planeringsverktyg. En relativt ny modelleringsteknik som har stor potential att förbättra produktionsprocessen är 4D CAD.
Fosforprocesser i Bornsjön, Stockholms reservvattentäkt - dynamisk massbalansmodellering med LakeMab
Bornsjön är Stockholms viktigaste reservvattentäkt och kan tillgodose staden med dricksvatten i flera månader om Mälaren skulle slås ut. Det är därför viktigt att Bornsjön håller en god vattenkvalitet. Under de senaste åren har vattenkvaliteten avseende totalfosfor i Bornsjön försämrats. Hög belastning av fosfor kan leda till övergödning i en sjö. När en sjö är övergödd uppstår ökad syreförbrukning som kan leda till syrebrist.
Vuxnas ansvar - en studie om barns möjligheter till delaktighet och inflytande i utformandet av förskolans miljö
This essay aims to investigate how students raised in Jehovah's Witnesses have experienced their career counseling during their middle and high school education.
My main objectives are, based on the testimonies of former Jehovah's Witnesses, to investigate how career counselors can find a strategy to approach these students in a non-threatening way. I also try to take into account the contextual elements which are of great importance when counseling students raised as Jehovah's Witnesses.
A qualitative study has been carried out with five informants with a background in the movement. The material has then been analyzed using a qualitative, narrative method.
Är ny eller gammal regionalism vägen framåt? : -En kvalitativ undersökning om Ansvarskommitténs balansgång mellan demokrati- och ekonomivärden
In May 2007 a committee called ??Ansvarskommittén??, assembled by the Swedish government, came with a proposal of changing the Swedish regional structure. The committee which consisted of representatives from all the sitting parties in the parliament proposed that the present regional structure consisting of 20 county council districts and 21 counties would be reduced to between 6-9 regions called ??regionkommuner??.The purpose of this study is to analyze how the committee?s proposal balances democratic and economic values by using a qualitative method. The committee?s proposal is analyzed by a comparison in five political areas with two differentiated regional theories called old and new regionalism.