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571 Uppsatser om Economical justifiable - Sida 23 av 39
Systemanalys av skogsbränsletransporter :
At the end of 70s and the beginning of 80s, 18 terminals was built and used for chipping wood residue from clear cuttings. Most of the terminals was terminated before the 2000s but with the high oil- and energy prices that we can see today there might be a place for these terminals again. The goal with the study was to analyze and compare economical differences between 5 different logistical systems, collected data was used with a set of formulas. The systems include long range transport of slash, chips and bundles. Three of the systems include transport by lorry to industry the last two includes a terminal with access to train transport.
Effektiviseringspotential inom industrisektorn : Energibesparing vid frekvensstyrning av centrifugalpumpar ? en fallstudie
The project was performed at SiemensIndustry Drive Technologies with theobjective to provide actual values forthe energy savings potential withinSiemens scope of practice.In Sweden the electrical drives standfor about 30 % of the total electricityconsumption and about 60 % of theelectricity consumption within theindustry. During the pre-study phaseelectrical drives with pump applicationswere identified as large energy users.Because of this a case study at one ofSiemens customers, Stora Enso Fors wasperformed. The system that was evaluatedduring the case study was a throttledsystem with a centrifugal pump forpumping pulp.The results yielded that a saving ofover 50 % could be achieved by replacingthe throttle valve with a variable speeddrive, a frequency converter. Thepayback period was two years and twomonths and the present value for thetotal life cycle cost of the variablespeed system was 662.566 SEK lower thanfor the throttled system. As aconsequence, Stora Enso Fors is advisedto invest in a frequency converter forregulation of the system.The general conclusion is that a focuson system efficiency is the mostimportant factor in energy efficiencyprojects and that the system regulationmethod has a large impact on the overallsystem losses and hence its efficiency.Energy efficiency potential forthrottled systems with centrifugal pumpsis large and significant economicalsavings can be made through investmentswith short payback time..
En jämförande studie av kalvuppfödningen på KRAV-anslutna och konventionella mjölkgårdar :
In order to investigate if the KRAV-regulations have any effects on the health and welfare of calves, KRAV-affiliated farms were compared to conventional farms with respect to calf management and outcome. The dairy calf has had a low economical impact during history. Even today the value of the calf is low and a lot of calves have a poor health status. The calf breeding is built on tradition and on the fact, that cheap antibiotics have made it possible to ignore, the recommendations about good hygiene in the calf?s environment.
Den tryckta pressens framtid i en digital miljö : Med Nya Wermlands-Tidningen som exempel
The research in question examines whether a newspaper benefits from its activity on the Internet and if so - how. Today, the morning press is relatively stable, but tendencies show that there?s a decrease amongst regular readers. The extension of this may jeopardize the position of the morning newspapers in the market and several newspapers choose to publish their content on the Internet. An Internet activity is foremost about keeping the position in the market, not to make an economical profit, and to compete at the same terms with free newspapers and news sites.
50 kVA eller 100 kVA : En teknisk och ekonomisk jämförelse av distributionstransformatorer
Rapporten utreder om distributionstransformatorer med märkeffekten 50 kVA i Vattenfall Eldistribution AB:s elnät kan avskaffas till förmån för märkeffekten 100 kVA. Transformatorer med märkeffekten 50 kVA förekommer vid nedtransformering av spänningen från 22 kV och 11 kV till hushållens huvudspänning 0,4 kV.50 kVA-transformatorer skiljer inte särskilt mycket från transformatorer med den högre märkeffekten i fråga om storlek och pris, och de bedöms kunna bytas ut utan större praktiska svårigheter.Fördelen med 100 kVA är att de elektriska belastningsförlusterna blir lägre i och med den högre märkeffekten. Dessutom innebär ett byte vissa elkvalitetsförbättringar.Nackdelarna med 100 kVA är att de elektriska tomgångsförlusterna är högre och att inköpspriset är högre än för 50 kVA. I övrigt kan kostnaderna likställas för de två alternativen.Endast kostnader för aktiva effektförluster berördes i rapporten då de ekonomiska kostnaderna för reaktiva effektförluster kunde försummas för de aktuella transformatorerna.För att nå ett svar på frågan om det kan vara lönsamt att avskaffa 50 kVA-transformatorerna studerades fem verkliga fall i Vattenfalls svenska elnät. Dessutom studerades eventuella elkvalitetsvinster med ett byte.Svaret blev att inte för något av de fem studerade fallen var det lönsamt med ett byte till 100 kVA-transformator.
Bokbussverksamhet. Effektiv decentralisering av svensk biblioteksservice?
The purpose of this masters thesis is to evaluate bookmobile service as a decentralised library service. I have made a qualitative interview survey, with seven Swedish municipalities participating, all providing bookmobile service in their rural parts. The purpose with the interviews is to examine their bookmobile service. I have also studied articles on bookmobile service, and decentralisation through small library units in library journals, to get an insight into how the work with decentralised library service is done in Swedish municipalities. In this thesis answer is sought to the following questions: - Which decentralised library services are suitable for inhabitants and institutions in sparsely populated areas, considering factors such as number of inhabitants, proportion of old people and children, demographic changes, economy, possibilities to cooperate with other municipalities? - What is the current bookmobile service situation in Sweden, taking seven municipalities in the region of Småland as a starting point? My conclusions are that each municipality must decide which decentralised library services that best suites their needs.
Professionell barnteater på folkbibliotek: ?att bli berörd, att bli glad, att få skratta?
This master?s thesis concerns the performance of professional children?s theatre in public libraries. With qualitative interviews I have looked into how four children?s librarians and two theatre consultants appreciate professional children?s theatre, and furthermore I have looked into their view on the importance of theatre for children. My intentions have also been to investigate their views on the function and status of children?s theatre in public libraries and also the relationship between library and theatre activities for children.
Demokratisk Transition : Fallen Slovenien och Lettland
Slovenia and Latvia are two examples of countries which have gone through a successful democratic transition. They were both under authoritarian rule and command economy up until their declarations of independence in the early 90s. Today they have a functional market economy and political pluralism. I have examined transition theories highlighted by Jonas Linde and Joakim Ekman and from these theories sought the explanations to what lies behind the successful transitions of these two countries. The transition in Slovenia was affected by liberalization from within the ruling communist party which then controlled much of the transition process. A relatively large civil society and the fact that Slovenia was not involved in the Balkan War also contributed to the short process.
Ett folkbibliotek och dess användare: användares uppfattningar av service relaterade till verksamhetsintentioner
The aim of this MA thesis is to examine how users regard and receive the services offered by a specific public library. We also examine what the conception of service means to the users and how they perceive this service being offered by the library. We look upon if and to what extent the service conception depends on contact with the library staff. The methods used are qualitative interviews and analyses of documents directing the library activities. The public library we have examined in this respect is the public library of Västerås.
Lantbruket som energiproducent : tekniska, ekonomiska och miljömässiga förutsättningar för fjärrvärmeproduktion med lokalt skogsbränsle
A third party access to district heating networks has been proposed in Sweden, to increase the competition
on the district heating market. Such third party access could create opportunities for the agricultural sector
as an energy producer. This study describes the technical, economical and environmental prerequisites for a farmer cluster to build and run a heating plant, fueled with local wood fuel.
The heating plant in the described scenario is 8 MW and will supply a village of 1000 houses, and is fueled with wood chips exclusively. Supplying a heating plant with fuel puts high demands on the logistics, since there need to be a continuous flow of fuel. In the scenario, wood residues from felling and thinning is stored in stacks in the forest, and a few times a year chipped and transported to a storage area at the heating plant.
In the study, an estimation of the profitability has been made by estimating the cost of the investment,
personnel, operating and maintenance costs and costs for the fuel and ash handling.
Sagt & gjort : förhållningssätt & arbetsmetoder inom arkitektur
This thesis was written during the autumn 2007. I wanted to
understand the situation of the contemporary architecture in a
perspective broader than merely the Swedish. I asked myself
what remained of architecture if one would eliminate purely
functional, aesthetical and ecological aspects. With help from
literature I interviewed theorists in architecture, practitioners
and a philosopher to hear their thoughts regarding what architecture
can or should be about. The result of the interviews
and the literature studies constitute the two initial parts of the
thesis.
Möjligheter och besvikelser : Språklärares diskurser om IKT och skärmtexter i arbetet
We have chosen to focus on the meaning of long-term income support dependency regarding health, goal setting and motivation for the recipient of economical aid. We have chosen to use semi structurized interviews to achieve our goal of reaching the clients experience of long-term income support dependency. The study consists of interviews of six clients whose answers have been analyzed through appliance of Kielhofner´s Model of human occupation, Scheff´s Shame in self and society. Our results show regarding, 1) the factor health that long-term income support dependency may elevate the risk of illness and less experienced options of possibilities to act. 2) regarding the factor goal setting, that goals may be inefficiently used during social work with long-term income support dependent clients and may result in a disorganized relationship between client and social worker in the sense of making the parties pull in opposite direction. 3) regarding the factor motivation, that long-term income support dependency and the living with the emotion of shame elevates the risk of maintaining a negative image of oneself that limits the willpower to assimilate new knowledge and/or skills.
Vindarnas Boning : En studie av monumentalistiskt historiebruk
Monuments are raised all over the world of several different reasons. A monument dosen´t only refer just to itself, it also tells something about the historical context they are risen into. The overall purpose of this study is to try to reveal how history is used through the process, and rising of the monument "Vindarnas Boning" in Karlstad, Sweden 16/6, 1967. The historical narrative around this monument is about to show the importance of the esthetics, the main forces around the monument and last, how the monument legitimacy is maintained. Throughout those analytic tools, according to this study, I will try to examine possible other reasons behind this monument than the official one, who is to act as a remembrance of the finnish immigrants who settled in the unpopulated deep forests of Sweden and enabled to maintain a minor community separated from other influences, during the 16 th century and onward.
Förutsättningar för småskalig solelproduktion i Australien
The study aims to investigate the feasibility of small-scale electricity production with solar electricity systems, also known as PV (photovoltaic) systems, in Australia. Due to the global warming, sustainable energy has in recent years become an increasingly important issue, both internationally and in Australia. With one of the largest dependencies on fossil energy sources in the world, the country's abundant solar radiation is a possible solution to this issue.Both the technical and the economic feasibility of small-scale PV systems were investigated. On the technological side, the electricity generation, distribution and consumption systems were studied. On the economical side, the parameters that drive the profitability of a PV investment were investigated.
Snowboard - En idrott för alla? : En studie av Svenska skidförbundets satsning på ungdomar med invandrarbakgrund
AbstractAimThe aim of this study has been to survey the background of the youths in the selection group which participated in the Dream action day, to evaluate if the project succeeded and support the Swedish Ski Association with their recruiting process. The questions of issue have been: Which ethnical, demographical and economical backgrounds do the youths of the selection group have that participated in the Dream action day? Is there any common denominator among those who was drawn to continue? Do the youths want to contribute to expand the sport? Is Dream action Day a good way to reach out to the target group?MethodThrough a strategic selection made by the Swedish Ski Association 44 youths participated in a day during which they tried snowboard. They have been a part of our quantitative data collection and we have chosen six to interview. The interviews have been executed in form of semi structured interviews.ResultsThe results clearly show that few of the participants had any connection to the sport, neither from home nor from friends.