Sökresultat:
2612 Uppsatser om Energy security - Sida 35 av 175
The Capital Structure Puzzle of SME's - Evidence from the Swedish Security Industry
The purpose of this thesis is to ascertain the main determinable factors of Swedish SMEs capital structure decisions and to investigate whether existing capital structure theories are applicable on Swedish SME financing. We have used panel data to run regressions of various capital structure determinants on three measures of capital structure; short- term debt, long-term debt and total debt. We found that growth opportunities, profitability and age are the most important capitalstructures determinants for our sample. Firm size shows a small explanatory result but the effective tax rate and the asset tangibility do not seem to explain the capital structure at all. Thematurity matching principle is considered significant..
Bränsleceller i personbilar : En teknoekonomisk well-to-wheel analys av vätgas som fordonsbränsle
Several technical solutions are ready to step forward as the new generation of propellant, and this report aims to explore the possibility of commercializing fuel cell cars. The report is based on current research and data from today's technology and engineering solutions that are estimated to be commercially realized before 2020.A mapping of today?s different fuel cell options has shown that the most suitable fuel cell option is the Proton Exchange Membrane Fuel Cell, which uses hydrogen as fuel. The report is focusing on a techno-economic well-to-wheel analysis of hydrogen and the energy balance and costs in a system perspective. The basis for this analysis consists of two centralized methods of production, steam methane reforming (SMR), and alkaline water electrolysis.
Investeringsbeslut för småskalig vindkraft : en fallstudie
Wind power is one of the sources of renewable energy which has to be developed further in order to lessen our dependence on non renewable sources of energy. It's mainly oil and coal which have to be replaced by green energy. Wind power is already established in many countries, for example Germany, The United States of America and Denmark but it has to be continually developed and expanded to meet the needs of the growing energy consumption in the world. During the last few years many types of small wind turbines have appeared on the market. These small wind turbines are an alternative to the big wind turbines or power generators which demand huge sums of investment money.A new target group can now buy the small wind turbines in order to cover their own usage of electricity.
Vitvarueffektivisering med hjälp av värmelagring : Simuleringsstudie kring energiförsörjning av vitvaror med hjälp av värmepump & ackumulatortank
The constant need of energy is something that affects us all no matter our current situation. Whether we are driving our car to work, taking the elevator or using the oven to cook dinner we end up relying on energy. Our whole society is continuously striving to achieve a higher grade of efficiency and the process of supplying ourselves with energy is no exception. The importance of appliances in our everyday life cannot be exaggerated and thus the importance of their high efficiency.Efficiency is already a keyword in the appliance industry with labels, stars and numbers helping us choosing the most suitable option for the task ahead. No matter how efficient appliances often use pure electricity as their energy source.
Miljöbedömning av olika behandlingsmetoder för organiskt hushållsavfall, slakteriavfall och flytgödsel
Organic material used for biogas production can also undergo other treatments. The
emissions and impact from the different treatments are evaluated in this
environmental assessment, with a focus on energy and climate. The materials
included in the study are organic household waste, slaughterhouse waste and liquid
manure. Other than biogas production, the possible treatments for organic household
waste and slaughterhouse waste are incineration and composting, and for liquid
manure storing and spreading. The analysis is based on data and information from
current and relevant literature, and relates to the conditions in the Swedish energy
system.
Köldbryggor och energiförluster. En studie om energiförluster genom balkonginfästningar och deras betydelse för byggnadens totala energibehov
In this report the balconies? abutments for a property in Bo01-area in Malmö has been studied. The property which is called Vitruvius contains four build-ings where two of them have corbelling balconies with intermittent abutments. With intermittent abutment means that the 50 mm thermal bridge insulation that the balconies is equipped with, is broken regularly by a 300 mm concrete heel. The reinforcement bar that holds the balcony runs through this heel.
Att nyttja marken 30 meter från järnvägen : hur platser, syften och miljö vävs samman
The purpose of this work is to raise ideas and interest for land that is very much forgotten,unused and neglected in terms of maintenance and usability. Railroads are often seen as adirty and loud intrusion in the landscape and therefore cities turn their backs on them. Theland around railroads is not considered useful despite its often central location and scrublandis common in these areas.The starting point of this work is the restrictions and possibilities linked to the land withinthe security distance 30 meters from the railroad center. Within this security distance thereare numerous limitations and regulations due to the nature of railroad use. These limitationsare counted for in the initial chapter and lay the foundation for the rest of the work.
Rättsäkerheten vid omhändertaganden av barn på 1950 - 1960 - talet : Studier av socialarbetarnas dokumenterade arbete
The main purpose of this study is to examine and gain increased knowledge concerning the legal security of children taken into protective care. The purpose is also to enable contemporary social workers to reflect around phenomena in today´s social work, among other things how investigations are carried out surrounding children taken into protective care thought this historical study. To find out how social workers dealt with caretakings I have chosen to examine the personel files that the social workers compiled for each child and also interview a man who worked as a social worker at the time of the investigation. The paper is divided into two part studies were the first one studies legal security through Mattsson´s (2002) further development of KjÆnstad?s way to analyse legal security, namely through investigating the clarity of the law, procedural rules and the comtetenay of the social workers.
Flexibiliteten på arbetsmarknaden : Ett genuint utbyte mellan bemanningsbranschen och dess anställda?
The flexibility of the labour market is considered as an instrument for increasing economic growth.Therefore has the use of flexible employment, also called atypical employment, increased. The atypical employment is characterized by insecurity in comparison with a traditional permanent full- time employment. One of the most common atypical employments is the manning employment, which is insecure whether it is permanent or not. The insecurity in the industry is based on insecure income, unpredictable working hours and poor psychosocial work environment.In order to encourage a continued increase of flexibility in the labour market while the need for security for staffing employees would be satisfied was Directive 2008:104 adopted. A certain amount of security has been achieved.
Inloggning : Lösenordskryptering och Brute force attack
This report is the result of a sub-project of a larger project to create a platform formathematical education. The sub-project focuses on authentication with associ-ated security, where security is emphasized. The project environment is Java EE 6where GlassFish 4.0 acts as the server. The project has been divided into threeparts; password encryption, Java EE authentication and brute force attack. Thepassword encryption part focuses on examining different hash functions executionspeed, the result shows that none of the examined hash algorithms is suitable fordirect use.
Korsförlamning hos häst : fodrets påverkan
The purpose of this thesis has been to gather knowledge about the complaints of tying-up in
horses and to show that the importance of feeding. The thesis includes a literature review of
tying-up how preventative measures by feeding can be made. In the equine sport, crosscountry,
horses occasionally suffers from tying-up, a muscle disease. An increased knowledge
about the disease is demanded by riders and trainers as the disease disrupts training and
competition of suffered horses. A cross-country horse works very hard in training and during
competitions but the work bouts are long enough for the muscle cells to use aerobic pathways
in the metabolism.
Artificiella sötningsmedel i dryck och dess effekt på hungerkänslor och energiintag
Sahlgrenska Academyat University of GothenburgDepartment of Internal Medicine and Clinical NutritionAbstractTitle: Artificial sweeteners in beverage and their effecton hunger and energy intakeAuthor: Sofia Andersson and Sofia JakobssonSupervisor: Heléne Bertéus ForslundExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: April 11, 2012BackgroundIn 2010 the total consumption of soft drinks in Sweden was estimated to 69 litres per person and17 % of the domestic production was estimated to consist of soft drinks sweetened with artificialsweeteners. The effects of artificial sweeteners on hunger is not yet fully understood. It isspeculated that they might increase hunger and hence increase energy intake.ObjectiveThe aim was to compile the evidence regarding the effects of an intake of a beverage sweetenedwith artificial sweeteners compared to sucrose on subsequent hunger and energy intake.Search strategyA systematic search for literature was performed in the databases PubMed and Scopus.Selection criteriaThe inclusion criteria were RCT, human studies, articles published in Swedish or English, studieson healthy adults and studies measuring hunger with a subjective scale or energy intake. Theexclusion criteria were studies who measured energy intake under other forms than standardisedor controlled, studies without a standardised dose of the beverage and articles needed to beordered against payment.Data collection and analysisFour articles were selected and examined according to a template developed by SBU. Theevidence for each outcome was weighed together and graded according to GRADE based on asummarised evidence form developed by the Sahlgrenska Academy.Main resultsAll four articles measured subjectively rated hunger.
RENOVERING AV MILJONPROGRAMMET TILL PASSIVHUS : Implementering av tysk prefabteknik
Construction accounts for about 35 percent of the total Swedish energy consumption and most of the energy is used by the large housing stock from the so-called ?Million program?. In the national action plan the government has put forward in energy efficiency. It is mentioned that existing buildings account for more than 90 percent of what is expected to be the housing stock within the coming 50 years. In order to meet environmental objectives its required that the existing stock be reviewed for energy efficiency. The goverment is now initiating a national framework with a budget of SEK 300 million Swedish crowns per year for five years, starting in 2010 to achieve the goal on energy efficient buildings. Energy efficiency of buildings in both new construction and above all within the existing stock are addressed.
Bankers identifieringsmetoder : Nu och i framtiden
Keywords: ID-method, internet, security, digitzing, bank Background: The digitizing of our society continues to grow and more parts of our lives is spent on the internet. The banks are one of the institutions that is at the forefront of this development since they established themselves on a early basis. The banks meeting points have since this establishment moved from the regular bank office out on the internet. A problem that has occurred during this transfer is the possibility to positive ID a customer in a virtual world. It is essential to offer the customer methods to identify themselves that are both safe and easy to use.
?Det här är myndigheten med stort M ? en kvalitativ studie om skillnaderna mellan att arbeta som socialarbetare statligt respektive kommunalt?
This study is about state officials who handle applications for sickness benefits and about municipal officials who handle applications for financial assistance. The purpose of this study is to explore the differences between the two professional roles regarding their conception about their exercise of authority, in terms of flexibility, individual adjustment, empathy and legal security.The study has a qualitative approach and is based on structured interviews with two state officials and two municipal officials. The questions that this study aims to answer are:- Is there a difference between state officials and municipal officials regarding their experience and use of flexibility? - Is there a difference between state officials and municipal officials regarding their perceptions of legal security, individual adjustment and empathy in their exercise of authority? - What kind of bureaucracy can you find in the two organizations?The results show that the state officials in this study have very limited flexibility due to legislation which makes their exercise of authority neither empathic nor individual. The municipal officials in this study state in their turn that the law entails broad flexibility and the opportunity for them to be empathic and to make individual decisions.