Fornföreningen Fibula on the Aland Islands contacts the author because its members want to create a museum.The purpose of this two years master’s thesis in Archive, Library and Museum studies is to shed light on what a museum really is. The research question I have answered is “what is a museum and is this what Fibula really wants in their reconstructed Viking village?”. Based on interview material, ethnographic field studies, relevant research in the subject and documents from Fibula, I have answered the research question. My theory is grounded and the methods are qualitative.The result of the analysis is that a museum is a non-profit, permanent institution mediating knowledge. It is a heritage value protector and a museum is obligated to take care of and conserve its museum objects and to safeguard the heritage professionally. A museum has to respect and understand the heritage it manages. Research anddocumentation of the museum collections is the key to maintain professionalism. A museum is always active and it can be a participating museum where visitors are included in the museums democratic processes. Fibula is a heritage entrepreneur and the association will find it difficult to manage a museum professionally due to that reason. Fibulas members have an existing sense of place for the Viking village in Kvarnbo and its surroundings. To bring attention to this fact in the future a museum, a visitor center, a walking trail or a development of the Viking village into a living history museum or an (archaeological) open air museum could be relevant. At the moment it seems doubtful however that Fibula and its members got the time, the commitment, the resources and the knowledge it takes to run a museum. Perhaps a museum can be created in the future if respect and understanding of heritage value will come to pass. Entrepreneurship and the sense of place alone don’t lead all the way to a museum.

dissertation contains seven papers. The first five are in the field of real estate finance, while the final two are asset pricing papers. The first paper explores equilibrium properties of lease rates. The framework is based on the concept of the term structure of lease rates, or the equilibrium rate as a function of lease length. In particular the analysis sheds light on the relationship between objective rental expectations and forward lease rates. The second, third and fourth papers in the dissertation consider the pricing of explicit real estate contracts. More specifically a type of indexed leases subject to a floor rate, leases with embedded renewal options and a real estate swap contract are analyzed and priced. The fifth paper considers the impact of index revision in the context of home equity insurance schemes. The idea of establishing markets allowing homeowners to hedge housing risk has been given significant attention in recent years. If contract settlement is based on a house price index, it is important to understand the scope of index revision, or the updating of earlier index estimates due to the arrival of new information. Using a rich data set, comprising all arm’s length housing transaction in Sweden during the period 1981-99, the revision properties of hedonic and repeat sales indexes are explored. The final two papers are in the field of asset pricing. The sixth paper revisits the consumption based asset pricing model using Swedish data. The seventh paper is a Monto Carlo study on the properties of different measures of misspecification under varying assumptions of asset return distributions. / Diss. Stockholm : Handelshögskolan, 2005 S. 3-9: sammanfattning, s. 11-177: 7 uppsatser

Diss. Stockholm : Stockholms universitet, 2005.

Hållbar utveckling är ett begrepp som flitigt används i läroplanen, utan att närmare definieras. Syftet med denna studie var att ta reda på om det finns någon skillnad på förståelsen av och inställningen till begreppet hållbar utveckling mellan de två grupperna bestående av etablerade och nyexaminerade lärare. Dessa grupper valde jag att studera då jag ville se om förståelsen för begreppet skiljer sig beroende på när i tiden lärarna studerade eller om arbetserfarenheten har betydelse för förståelsen. Studien tar sin utgångspunkt i en kvalitativ intervjustudie där respondentens egna tankar om begreppet kommer fram på ett tydligt sätt. Materialet har sedan analyserats via en kvalitativ innehållsanalys för att undersöka om det finns återkommande teman i de inhämtade materialet. I studien framgår att miljöperspektivet i begreppet hållbar utveckling främst lyfts fram både när det kommer till förståelsen samt prioriteringen av begreppet. Det ekonomiska perspektivet i begreppet är det perspektiv som i störst grad är osynligt och då främst hos de etablerade lärarna. Lärarens egna förståelse är av stor vikt för hur undervisningen av nästkommande generation bedrivs.

This thesis consists of four essays within the field of environmental economics. Computable General Equilibrium models have been used to assess the economic consequences of greenhouse gas policies. The focus is mainly on the Swedish economy, but the EU economies and the global economies are also analyzed in one essay each. The costs and effects of a unilateral Swedish decision to reduce carbon dioxide emissions are analyzed in essay I. The results of a unilateral reduction are compared to the results of an implementation of an EU multilateral agreement. The results indicate that if Sweden unilaterally decides to increase its CO2 tax, total EU CO2 emissions will increase, i.e. there will be a “carbon leakage effect”. Furthermore, an EU multilateral implementation of a CO2 tax will induce lower welfare (excluding environmental benefits) in Sweden, as compared to the situation where the same tax is unilaterally introduced.In the second essay we analyze the Swedish environmental goals conforming to the Kyoto Protocol, when simultaneously meeting national goals to alleviate acidification and eutrofication effects by reducing SO2 and NOx pollutants. We have found that when secondary benefits of measures aiming at reducing CO2 are taken into account, it may still be in the government’s interest to nationally decrease CO2, instead of engaging in seemingly low-cost trading. The principles for allocation emission permits are many, and in the third essay I focus on principles based on economic welfare theory. My main conclusion from these simulation exercises is that the distribution rule based on the different assumptions on social welfare function and some other more ad hoc distribution rules offers quite large changes in welfare, distributions of emission rights and contrary to earlier literature, I find that the initial distribution not only gives second-order effects but affects equilibrium prices and therefore, income.In the fourth essay I focus on how households’ demand for transport services can be improved in CGE-models. A differentiation between trip purposes and trip length, a complementary relationship between work journeys and labor supply, and a subdivision of households by density of population and income, influences the numerical results in a direction increasing the negative welfare effect of a carbon target, as compared to the non-extended model. / Diss. Stockholm : Handelshögskolan, 2004

The role of trust in social, economic, political, and organizational relations is a research topic that has received much attention during the last decade. Trust has been considered a key variable in various contexts, although it should be noted that many theorists pay little attention to empirically testing their arguments about the importance of trust. It is in the present thesis examined whether trust is an important variable in the context of risk policy.This question was addressed from different perspectives in three empirical studies, which were based on extensive survey data. The first article concerned the case of energy policy and the relationship between people’s perceptions of nuclear risks and their attitudes towards various aspects of energy policy was examined. In the second article it was studied whether trust was an important predictor of perceived risk within and across four European countries. Finally, in the third article, determinants of public trust in organizations were studied. An important finding in the thesis was that determinants of trust varied depending on the organization studied. It was also found that trust was a significant predictor of perceived risk, but the relationship was not very strong. It was suggested that the overall policy implications for risk management should be that there are limits to the possibilities to increase the level of trustworthiness and build public trust. An organization could make strong efforts to build an image of being a competent, open, fair, and credible organization, but still not gain the necessary degree of trust, because public perceptions can be based on certain organizational characteristics that are very fundamental and not easily changed. Furthermore, even if an organization succeeds in building a high degree of public trust, it was found in the thesis that it is possible to trust those responsible for risk management to be very competent and honest, yet perceive risks as high. A number of possible causes for this interesting finding are presented in the thesis. / <p>Diss. Stockholm : Handelshögskolan, 2003</p>

This thesis consists of three essays, which all concern the dynamics of pension reform. The first essay evaluates the financial balance and the demographic adjustability of the reformed Swedish pay-as-you-go pension system. The main findings are that the demographic adjustability of the system is poor. Furthermore, the financial balance and pension levels are, to a large degree, dependent on the pension fund and its returns. Making some alterations to the system's benefit formula may improve the adjustability of the system, as well as decreasing its pension fund dependency. It is also shown that the new public system imposes an age-dependent implicit tax on labor earnings that is falling with age. Within the pay-as-you-go system, this tax is large for younger workers for whom almost the whole contribution is regarded as a tax. By introducing a public defined contribution system, the total implicit tax may be reduced since the defined contribution system implies a negative implicit tax because savings are subsidized within the defined contribution system. In the second essay a three-generation OLG model for analyzing a privatization of PAYG old-age social security is developed. Furthermore, it proposes an explicit reform for how the privatization transition may be undertaken. The set of government policy instruments is limited to debt issuing and proportional labor income taxation. The possibilities of a Pareto-improving privatization, given the proposed reform, are then analyzed. Contrary to models where a two-generation OLG framework is used, the three-generation framework creates possibilities for a Pareto-improving privatization of old-age social security, since the PAYG system induces a non-optimal implicit tax over the life cycle. By shifting to an optimal tax policy cannot only the pension claims accrued under the PAYG system be financed, but the shift will also be Pareto-improving. In the third essay the performance of the reformed Latvian pay-as-you-go pension system is evaluated against the background of an exceptional projected decrease in the Latvian labor force. The pension system is designed to handle the upcoming difficulties, and special attention has been given in the design to keep the expenditures low relative to the revenues, by introducing rules dampening the increase in the pension expenditures. In the light of the pessimistic projection of the Latvian demography, the newly reformed PAYG system performs remarkably well. The expenditure reducing rules introduced have significant effects on the system's financial balance. The pension reform also includes the launch of a publicly run defined contributions pension system. It is shown that the resulting implicit tax imposed by the public pension system imposes on labor earnings is negative and increasing with age. That is, savings are subsidized in the public pension system. It is also shown that private savings are fully crowded out as individuals try to offset their savings in the pension system. Since individuals are capital constrained, they will have no private assets at all. From a welfare perspective, this suggests the overall contribution rate to the public pension system to be too high. / <p>Diss. Stockholm : Handelshögskolan, 2002</p>

Att rena vatten är kostsamt, från både en ekonomisk och miljömässig synpunkt, då behovet av fällningskemikalier, kolkällor och energi är stort. Det är därför önskvärt att titta på alternativa lösningar som möjliggör reningsverk att bli mer självförsörjande och kretsloppsanpassande. Hammarby Sjöstadverket är en pilotanläggning för avloppsvattenrening belägen i Stockholms sydöstra stadsdel i Henriksdal och ägs av IVL, Svenska Miljöinstitutet samt KTH. Sedan pilotanläggning byggdes år 2002, har flera olika reningstekniker utvärderats där fokus ligger på att sträva efter miljövänliga och kretsloppsanpassade system. Bland annat har en förfällningsteknik, så kallad trepunktsfällning utvärderats. Trepunktsfällningen innebär att ett metallsalt följt av två olika polymer tillsätts i flockningskammaren i inbördes ordning för att på så sätt kunna reducera en högre halt av det organiska materialet. Tidigare fällningsförsök på Hammarby Sjöstadsverket, har visat på att trepunktsfällningen kan avskilja det organiska materialet med upp till 90 %, vilket kan jämföras med en avskiljning på endast 75 % med vanlig förfällning. Detta examensarbete syftar till att validera redan framtagna resultat inom trepunktsfällning samt att genom biologisk hydrolys av primärslam, utvinna en kolkälla till efterdenitrifikationen innehållande så höga halter flyktiga fettsyror, Volatile Fatty Acids, (VFA) som möjligt samt undersöka kostnaderna för ett avloppsreningsverk med trepunktsfällning, biogasutvinning och uttag av intern kolkälla från primärslammet vid en uppskalning motsvarande 100 000 personekvivalenter. Fällningsförsöken utfördes i pilotskala med fällningskemikalien PAX XL-36 kombinerat med en lågmolekylär organisk polymer, Purfix-120, följt av en högmolekylär oorganisk polymer Superflock C-494. Syftet med trepunktsfällningen var att validera redan framtagna resultat inom trepunktsfällning och på så sätt avskilja så stora mänger organiskt material som möjligt i förfällningen så att ett primärslam innehållande en hög halt Chemical Oxygen Demand (COD) erhålls. Två olika doseringar med PAX XL-36 testades, 145 respektive 193,5 g/m3. Bäst reduktion av COD och fosfor erhölls då 193 g/m3 PAX XL-36 kombinerades med 60 g/m3 Purfix-120 samt 0,025 g/m3 Superflock C-494. Då erhölls en COD-reduktion på 75 % samt en totalfosforreduktion på 83 %. Genom hydrolys av primärslam i laboratorieskala undersöktes torrsubstanshalter (TS-halter) på 1, 2 respektive 3 % och uppehållstider på upptill åtta dagar. Syftet med hydrolysen var i detta fall att undersöka vilken torrsubstanshalt samt vilken uppehållstid som gav högst produktion av VFA. Försöken visade att en TS-halt på 3 % producerade högst andel VFA och att produktionen av VFA för samtliga TS-halter var som störst under dygn två. VFA- och COD-produktionen ökade linjärt för samtliga TS-halter fram till och med dygn fem. Efter dygn fem började produktionen av VFA och COD för TS-halterna 1 och 2 % avta något. TS 3 % visade dock inte samma avtagande trend för VFA.  Även den dagliga ammoniumhalten och pH undersöktes. Ammoniumhalten ökade i takt med att VFA-halten ökade. pH hade generellt sett en avtagande trend. Fyra olika denitrifikationsförsök genomfördes i laboratorieskala med det uttagna hydrolysatet där den tillsatta COD-halten antingen var 3,3 eller 4 gånger den initiala nitratkvävekoncentrationen. Syftet med denitrifikationsförsöken var att utvärdera det framtagna hydrolysatets funktion som en kolkälla. Denitrifikationsförsöken uppvisade denitrifikationshastigheter mellan 4,3 och 7 mg NO3-N/g volatile suspended solids*h med kol-kvävekvoter (C/N-kvoter) mellan 3,9 och 12,3 mg COD/mg NO3-N. Lägst C/N-kvot erhöll lägst denitrifikationshastighet. Dock kunde inte slutsatsen dras att högst C/N-kvot gav högst denitrifikatioshastighet. Även de ekonomiska aspekterna undersöktes i syfte att utreda kostnaderna för ett avloppsreningsverk med trepunktsfällning, biogasutvinning och uttag av intern kolkälla från primärslammet vid en uppskalning motsvarande 100 000 personekvivalenter. Uttaget av en intern kolkälla skulle trots förlust i biogasutvinning vara ekonomiskt gynnsamt. Vinsten, i form av att ej behöva inhandla en extern kolkälla, i detta fall etanol, motsvarar biogasförlustens belopp. Trepunktsfällningens fällningskemikaliekostnader var den största posten och uppgick till 8 060 000 kr. Denna kostnad kontra mindre energiförbrukning i biosteget undersöktes också. Här uppgick besparingarna i biosteget till ca 1/8 av fällningskemikaliekostnaderna. Då trepunktsfällningen endast kunde ge en 75-procentig COD-reduktion, vilket motsvarar en vanlig förfällning, anses trepunktsfällningen vara ekonomisk ogynnsam då den medför extra kostnader av polymerer.  Istället borde trepunktsfällningen ersättas med en förfällning. Sammanfattningsvis kan det konstateras att en intern kolkälla i form av hydrolyserat primärslam skulle kunna ersätta en extern kolkälla rent funktionsmässigt. Dock måste åtgärder göras för att minimera produktionen av ammonium under slamhydrolysen. Ur ett ekonomiskt perspektiv skulle utvinningen av en intern kolkälla endast vara ekonomisk gynnsam då trepunktsfällningen ersätts med förfällning. / Water treatment is costly, from both an economic and environmental point of view, since the need for precipitation chemicals, carbon sources and energy is high. It is therefore desirable to look for alternative solutions that enable plants to be more self-sustaining. Hammarby Sjöstadsverket is a pilot plant for wastewater treatment located in Henriksdal, a southeastern neighborhood of Stockholm. The plant is owned by IVL, Svenska Miljöinstitutet and Kungliga Tekniska Högskolan (KTH). Since the pilot plant was built in 2002, several different cleaning techniques have been evaluated with focus on striving for eco-friendly and eco-adapted systems. For instance, a pre-precipitation technique, so-called three step precipitation have been evaluated. The three step precipitation implicates that a metal salt followed by two different polymers are added in the flocculation chamber in the particular order to thereby enable to reduce a higher content of the organic material. In previous precipitation tests at Hammarby Sjöstadsverket, one managed to remove up to 90 % of the organic material using the three step precipitation (IVL, Hammarby Sjöstadsverket, 2011). This can be compared to a removal of only 75 % with ordinary pre-precipitation. This thesis aims to validate already obtained results within three step precipitation and with biological hydrolysis of primary sludge, extract a carbon source for post-denitrification containing as high concentrations of Volatile Fatty Acids (VFA) as possible and to investigate the cost of a wastewater treatment plant with three step precipitation, biogas generation and collection of internal carbon source from primary sludge at an upscaling corresponding to 100,000 person equivalents. Precipitation experiments were carried out in pilot scale with the precipitation chemicals, PAX-XL 36, combined with a low molecular weight organic polymer, Purfix-120, followed by a high molecular weight inorganic polymer, Super Flock C-494. The purpose of the three step precipitation was to validate the already produced results within three step precipitation and thus separate as large amounts of organic material as possible in the precipitation so that a primary sludge containing a high chemical oxygen demand (COD) can be obtained.Two different dosages of Purfix-120 were tested: 45 and 60 g/m3. The best reduction of COD and phosphorus were obtained when 193 g/m3 PAX XL-36 was combined with 60 g/m3 Purfix-120 and 0.025 g/m3 Super Flock C-494. Hereby a COD reduction of 75 % and a total phosphorus removal of 83 % were obtained. By hydrolysis of primary sludge in batch experiments Total Solid (TS) concentrations of 1, 2 and 3 % and residence times of up to eight days were examined. The purpose of the hydrolysis in this case was to investigate which TS concentration and residence time that gave the highest production of VFA. The experiments showed that a TS concentration of 3 % produced the highest amount of VFA and that the VFA production of the three different TS concentrations peaked at the second day. The VFA and COD production increased linearly for the three TS concentrations up until day five. After day five the COD and VFA production, for the TS concentrations of 1 and 2 %, started to decrease slightly. However TS 3 % did not show the same declining trend for VFA. Furthermore the daily ammonium and pH were investigated.  As the VFA and COD concentration increased the ammonium concentration increased as well. pH had overall a  decreasing trend. Four different denitrification tests were performed in batch experiments with the extracted hydrolyzate. The added COD content from the hydolyzate was either 3.3 or 4 times the initial nitrate concentration. The denitrification tests showed denitrification rates between 4.3 and 7 mg NO3-N / g volatile suspended solids * h with carbon-nitrogen ratios (C/N ratio) between 3.9 and 12.3 mg COD/mg NO3-N. The lowest C/N ratio received the lowest denitrification rate. However, it could not be concluded that the maximum C/N ratio had the highest denitrification rate. Futhermore the financial aspects were examined in order to investigate the cost of a wastewater treatment plant with three step precipitation, biogas generation and collection of internal carbon source from primary sludge at an upscaling corresponding to 100,000 person equivalents. The extraction of an internal carbon source would, despite loss of biogas production, be economically beneficial. Gain, in terms of not having to purchase an external carbon source, in this case ethanol, amounts to the amount of the biogas loss. The three step precipitation chemical costs were the largest item, amounting to 8,060,000 SEK. This cost versus less energy utilization in the biological step was also examined. In this case the savings in the biological step amounted to about 1/8 of precipitation chemical cost. Since the three step precipitation only managed to remove 75 % of the COD, a removal which corresponds to an ordinary pre-precipitation, the three step precipitation is considered to be economically unfavorable as it involves additional costs of polymers. Instead the three step precipitation should be replaced with a pre-precipitation. In summary it can be stated that an internal carbon source in the form of hydrolyzed primary sludge could replace an external carbon source in a functional way. However, steps must be taken to minimize the production of ammonium during sludge hydrolysis. From an economic perspective, the extraction of an internal carbon source would only be economical favorable if the three step precipitation is replaced with pre-precipitation.

Diss. Uppsala : Uppsala universitet, 2004.

Diss. Uppsala : Uppsala universitet, 2006.