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122 Uppsatser om Rolling mill - Sida 5 av 9
Föroreningar orsakade av stenar inblandade i barrmassaved
Holmen Skog AB is an important supplier of conifer pulpwood to the Iggesund Paperboard mill. After logging and transport to the landing by a forwarder, the wood is loaded on trucks for further transport, often by using separate loaders. During this handling process considerable amounts of stone material is sometimes mixed into the pulpwood and this causes problems for the industry. The aim of this study is to identify which part of the chain from forest to pulpmill, that contributes the most to this contamination. Sizes and total volumes of the contaminating stones were also investigated.
Energieffektivisering på Skutskärs Bruk : Varvtalsstyrning till utvalda pumpenheter på Blekeri 4
In modern society in terms of economics and environmental impact, it is important to ensure that a company is as energy efficient as possible to reduce the amount of energy used. About 10 TWh of electricity used annually to pump drives in Swedish industry. Therefore, pumping system has great potential for energy savings.The objective of this report was to determine how much energy and money that can be saved with the insertion of variable speed drive to six pumps on Bleach plant 4 in Skutskär Mill. The work was performed with electrical measurements during one week, analysis of pump curves and the compilation of production data over a year.The results show that four of these six pumps were profitable and yielded an annual saving of 1172 MWh of electricity and 560 000 SEK. With an economic lifetime of 10 years and a discount rate of 6.8% the final result for the entire life-cycle savings became 3 355 000 SEK.
Hållbarhetsidéns resa : En fallstudie om hur hållbarhetsidén översätts inom ett pappersbruk
This study focuses on how the idea of sustainability is dealt with by companies, how the idea changes when moving through a company structure and how the different individuals interpret the idea. To date, many different studies have been written on the subject of sustainability, but few share the perspective addressed in this particular study. This case study was formed at a paper mill in the central part of Sweden. Semi-structured interviews with employees working on different hierarchical levels, within the same company, were chosen in order to get an insight into how the idea of sustainability is implemented throughout an entire company. The interviews have been transcribed to help identify contrasting patterns.This study has shown that the idea of sustainability, and its context within society, differs from how the idea is perceived in the organization.
Finansiering av nystartade företag : En fallstudie av företaget Rolling Optics för att analysera finansiella aktörers påverkan på utvecklingen hos nystartade teknikbaserade företag
Den här fallstudien syftar till öka kunskapen om hur Stena Line kan förbättra service genom lärandet från en e-learning utbildning samt om personalen har ett behov av uppföljning, och i så fall hur den ska utformas. Vi ville även öka vår kunskap om hur Stena Line kan förändra de anställdas beteenden med hjälp av e-learning och vilka förutsättningar som krävs för att personalen ska bli motiverade till att förändra sitt beteende.Fallstudien har genomförts genom metodkombination. Tillvägagångssättet har varit att inledningsvis dela ut en enkät, kvantitativ metod, för att skapa oss en uppfattning om arbetsplatsen. Därefter genomfördes semistrukturerade person-, och gruppintervjuer med ett strategiskt urval, kvalitativ metod, med en intervjuguide som utformats med hänsyn tagen till enkätens resultat. Det kvalitativa tillvägagångssättet har varit vår huvudsakliga metod.Vi har kommit fram till att hur utbildningen presenteras är viktigt för hur den mottas hos anställda, vilket i sin tur påverkar resultatet av utbildningen.
En empirisk studie av Value-at-Risk-prediktering med hjälp av GARCH-modeller
This paper describes a study examining four different GARCH models AR(1)-GARCH(1,1), AR(1)-EGARCH(1,1), AR(1)-APGARCH(1,1) and AR(1)-GJR-GARCH(1,1), and their ability to predict future volatility and thereby providing more reliable estimates for Value-at-Risk. The study is based on daily observations for the return of the OMX Stockholm 30 Index, during the time period 31st December 1996 to 29th December 2006. The coefficients for these GARCH models have been estimated using a five-year rolling estimation window, with one-year lags, for five different in-sample-periods. These five in-sample-periods, and the coefficients given by them, have been used to generate five out-of-sample predictions for the volatility in each year. Using these volatility predictions, the daily Value-at-Risk has been calculated for confidence intervals of 90 percent, 95 percent, and 99 percent, respectively, during the time period between 1st January 2001 and 29th December 2006.
Modersmålsundervisningens låga deltagande : En undersökning om varför elever med behörighet inte deltar i modersmålsundervisning
The fundamental freedoms and human rights is something the countries, and its citizens, of theEuropean Union more or less take for granted. However, in recent years these rights have become atopic of discussion in the way that a debate about the Islamic headscarves has developed. Thisdebate has resulted in that a number of countries, including France, have taken legislative measuresto ban clothing that fully covers ones face. Out of these bans a discussion has arisen concerning thefundamental freedoms and human rights. These burqa bans, as it is labeled in the pubic debate, havebeen accused to wrongfully limit the individuals freedoms and human rights.This study therefore has the aim to analyze these burqa bans in relation to the European Union,United Nations and the Council of Europe?s general declarations concerning the fundamentalfreedoms and basic human rights.The main result of this study shows that these bans in fact is not a proportionally restrict in thefundamental freedoms and human rights.
Burkaförbud : Rättfärdigad restriktion eller brott mot de grundläggande friheterna och mänskliga rättigheterna?
The fundamental freedoms and human rights is something the countries, and its citizens, of theEuropean Union more or less take for granted. However, in recent years these rights have become atopic of discussion in the way that a debate about the Islamic headscarves has developed. Thisdebate has resulted in that a number of countries, including France, have taken legislative measuresto ban clothing that fully covers ones face. Out of these bans a discussion has arisen concerning thefundamental freedoms and human rights. These burqa bans, as it is labeled in the pubic debate, havebeen accused to wrongfully limit the individuals freedoms and human rights.This study therefore has the aim to analyze these burqa bans in relation to the European Union,United Nations and the Council of Europe?s general declarations concerning the fundamentalfreedoms and basic human rights.The main result of this study shows that these bans in fact is not a proportionally restrict in thefundamental freedoms and human rights.
Elektrolytlösningar som vätsketerapi hos mjölkkor med löpmagsförskjutning :
Ten cows suffering from displacement of abomasum (DA) were treated with two different electrolytesolutions. The DA cows showed symptoms typical for the disease. Four out of 10 cows had a metabolic alkalosis and two a metabolic acidosis. The cows were mildly hypocalcemic, and 9 out of 10 were mildly to moderately hypokalemic. Six out of 10 cows showed muscle fasciculations.
Kartläggning och analysering av initieringsprocessen : En fallstudie utförd hos Teknikgruppen för RV2012 på Sandvik AB
This thesis has been carried out to the Technology Group at industrial plant Tube Mill2012, which belongs to the Sandvik AB. Technology Group is a unit that takes care ofall requirements and suggestions regarding investigations, test runs and designmodifications. The main objective is to identify and analyze the existing initializationprocess to see where improvement opportunities exist and to come up withsuggestions for improvement, supported by previous research and literature. Anextensive literature search and case study has been conducted to provide a solidfoundation to refer to during the work. Completing the interviews and the workshopgave a clear picture of their unstructured work and approach, how the lowrequirements on the received orders caused problems for the group as well as thelack of a standardized resource allocation method provides major delay factors.Solution proposal then became a very easy process model in five steps with all theinformation gathered in one place.
Optimering av indunstningsprocess
The wastewater treatment plant at GE Healthcare's facility in Uppsala deployed a three step vacuum evaporator in 2007. The purpose of this was to pre-treat wastewater containing amines. The purpose of this thesis was to optimize thisprocess by reducing the amount of concentrate without releasing more nitrogen tothe environment and to examine if density could be used as a measurement of whenthe process should be ended.To create a foundation for optimization six test cycles were conducted with samples taken from all three steps. Both concentrate and condensate were tested as well as the incoming solution. Furthermore, the thesis has been expanded with a benchmarking part examining two different evaporators.
EU:s gemensamma utrikes- och säkerhetspolitik - En studie om dess uppkomst och institutionella utformning
This thesis aims to explain the emergence of the Common Foreign and Security Policy of the European Union, and its institutional shaping, by using elements of Neofunctionalism and Liberal Intergovernmentalism.Using Neofunctionalism, the Common Foreign and Security Policy can be explained both as a side-effect of Europe's economic integration, and as a way to maintain the former and the European Union's position as an economic superpower. The institutional shaping is a result of lack of convergence between important national interests. Therefore it rests on a firm intergovernmental base, with rigorously limited use of supranational decision-making.For Liberal Intergovernmentalism, geopolitics and ideology, and to a certain level log-rolling, have played important roles. The reunification of Germany convinced France to form an alliance between the two countries. France, determined to achieve an economic and monetary union, thus offered Germany a political union, including a Common Foreign and Security Policy on intergovernmental terms.
Blod, svett, tårar? och Word of Mouth? ? Att arbeta aktivt med Word of Mouth
Det blir allt svårare för företag att särskilja sig på marknaden. Traditionell marknadsföring är inte längre lika effektiv som förr, och idag finns flera olika strategier för att sticka ut i bruset. Kring varumärken och produkter skapas ofta ett rykte, som ibland antingen kan vara positivt eller negativt. Ibland har detta rykte uppkommit utan påverkan ifrån företaget, men det finns även strategier för att skapa och påverka sitt eget rykte. Ett positivt rykte kan leda till ökad försäljning och vinst.
Ekonomisk styrning i banksektorn : En jämförelse av två storbanker i Sverige med fokus på flexibla styrmedel.
A more complex and turbulent world market puts pressure on flexibility and the ability to adjust its business to the market changes. The rapid and unpredictable change is hade to analyze and forecast which demands more short-term forecasting. The issue for this dissertation is based upon the demand of more flexible ways of doing business in the bank sector in Sweden, which is a turbulent and unpredictable market. Handelsbanken is a company that uses the so called Beyond budgeting concept and the dissertation is about this company?s ability to solve the economic governance without the traditional budgeting process.
Återvinning av dryckeskartonger : En studie som syftar till att öka återvinningsgraden av Tetra Paks förpackningar i Indonesien
People of the modern world consume more than they ever used to do. Because of the close correlation between consumption and the amount of waste, the waste volume is also expected to increase. The purpose of this study is to examine if some measures in the recycling process from Sweden could be implemented in Indonesia. In fact, Indonesia is one of the countries in which the waste management system is struggling. Tetra Pak, one of the world leading producer of food packaging, is studied in this report.
Begomovirus prevalence and diversity in the TYLCV resistant tomato cultivar Shanty in Nicaragua
Every year begomovirus infections cause severe constraints to the tomato production in Nicaragua. Extensive yield losses are followed by large economical losses, both for the country and the single farmer. During recent years the use of begomovirus resistant or tolerant tomato cultivars has increased in Nicaragua as an effort to improve yields. Still, begomovirus infection is a large threat to the tomato production. Therefore, ongoing work in Nicaragua is focusing on finding new, better, begomovirus tolerant or resistant tomato cultivars.