Den här studien utreder om en successiv marknadsanpassning har påbörjats efter reformeringen av hyressättningen på bostadshyresmarknaden 2011. Med hjälp av data från Hyresgästföreningen testas två hypoteser med hjälp av regressionsmetoden difference-in-difference. För det första om det har skett en inflationsjusterad ökning av hyrorna efter reformen som är större än i perioden före. För det andra om hyrorna har ökat mer i attraktiva kommuner än i mindre attraktiva kommuner. Slutligen undersöks om hyresmarknadens parter har ändrat sina attityder efter reformen. Resultaten visar att den årliga genomsnittliga inflationsjusterade hyresförändringen är 0,27 % högre efter reformen. Vidare går det inte att bekräfta att större höjningar har skett i attraktiva kommuner. Hyresmarknadens parter har inte ändrat sina attityder generellt sett men de privata hyresaktörerna har efter reformen tagit en mer aktiv roll i hyresförhandlingarna. / This study investigates if a gradual market adjustment has begun after the reform of the rent levels on the residential rental market 2011. Using data from the Swedish Tenants Association, Hyresgästföreningen, two hypotheses are tested with the regression method difference-in-difference. Firstly, if there has been an inflation-adjusted increase in rents after the reform in comparison to the period before. Secondly, if the rents have increased more in attractive communities than in the less attractive ones. Finally, the key players of the rental market are studied in order to examine If the parties have changed their attitudes after the reform. The results show that the average annual inflation-adjusted rent change is 0.27% higher after the reform. Furthermore, we cannot confirm that larger increases occurred in attractive communities. Rental Market parties have not changed their attitudes in general, but the private landlords have, post reform, taken a more active role in the rent negotiations.

The operation of a large and complex electric power system requires meticulous and rigorous study and incessant planning. All the players involved, must plan ahead to account for the uncertainties that can affect the hour-to-hour, day-to-day, medium-term and long-term supply of electricity. Medium-term operations and planning provides the players with guidelines and strategies for short-term operating decisions vis-à-vis the market. Adequate planning helps the players to mitigate or be prepared for unforeseen circumstances encountered during scheduling of electricity generation at any stage. This thesis focuses on some aspects of the least explored medium-term operations and planning issues in power systems in the deregulated electricity market environment. The issues addressed in the thesis are diverse but inter-linked as medium-term problems, which have surfaced due to deregulation or are outcomes of unique thought-processes emerging from the restructuring phenomenon. The thesis presents a novel approach to security coordinated maintenance scheduling in deregulation wherein the ISO does not generate a maintenance schedule by itself, but assesses the maintenance schedules from individual gencos by incorporating them in a medium-term security constrained production scheduling model, and verifying whether they result in unserved energy at one or more buses. Based on the information on bus-wise unserved energy, the ISO generates corrective signals for the genco(s), and directs them to alter their maintenance schedules in specific periods and re-submit. The proposed scheme exploits the concept of commons and domains to derive a novel factor to allocate the unserved energy at a bus to a set of generators responsible. The coordination scheme is based on individual genco’s accountability to unserved energy at a bus. Another important question addressed in the thesis is whether there is a need to consider customer’s locations in the power system when the utility provides service to them. In other words, whether the reliability of the load service provided by the utility varies across the system, from bus to bus, and if so, how are the Locational Marginal Prices (LMPs), which are determined from market auctions, affected by such variations. The thesis also answers the important question of how the LMPs can be differentiated by the Load Service Probability (LSP) at a particular location, so that it is fair to all customers. A new approach to determining the bus-wise LSP indices in power systems is proposed in the thesis. These LSP indices are arrived at by defining and computing bus-wise Loss of Load Probability (LOLP) indices. The discrepancy in LMPs with respect to the bus-wise LSP is then investigated and the bus-wise LSP indices are thereafter utilized to formulate a novel proposition for LSP-differentiated LMPs for electricity markets. The thesis furthermore addresses the medium-term Transmission Reinforcement Planning (TRP) problem and proposes a practical approach to TRP by making use of standard design practices, engineering judgement, experience and thumb-rules to construct a Feasibility Set. The Feasibility Set helps in limiting the type and number of reinforcement options available to the transmission planner in selected existing corridors. Mathematical optimization procedure is then applied considering the Feasibility Set, to attain an optimal set of reinforcement decisions that are economical and meets the system demand in the medium-term, without overloading the transmission system. Two different solution approaches- the Decomposition Approach and the Unified Approach are proposed to solve the TRP optimization problem.

The operation of a large and complex electric power system requires meticulous and rigorous study and incessant planning. All the players involved, must plan ahead to account for the uncertainties that can affect the hour-to-hour, day-to-day, medium-term and long-term supply of electricity. Medium-term operations and planning provides the players with guidelines and strategies for short-term operating decisions vis-à-vis the market. Adequate planning helps the players to mitigate or be prepared for unforeseen circumstances encountered during scheduling of electricity generation at any stage. This thesis focuses on some aspects of the least explored medium-term operations and planning issues in power systems in the deregulated electricity market environment. The issues addressed in the thesis are diverse but inter-linked as medium-term problems, which have surfaced due to deregulation or are outcomes of unique thought-processes emerging from the restructuring phenomenon. The thesis presents a novel approach to security coordinated maintenance scheduling in deregulation wherein the ISO does not generate a maintenance schedule by itself, but assesses the maintenance schedules from individual gencos by incorporating them in a medium-term security constrained production scheduling model, and verifying whether they result in unserved energy at one or more buses. Based on the information on bus-wise unserved energy, the ISO generates corrective signals for the genco(s), and directs them to alter their maintenance schedules in specific periods and re-submit. The proposed scheme exploits the concept of commons and domains to derive a novel factor to allocate the unserved energy at a bus to a set of generators responsible. The coordination scheme is based on individual genco’s accountability to unserved energy at a bus. Another important question addressed in the thesis is whether there is a need to consider customer’s locations in the power system when the utility provides service to them. In other words, whether the reliability of the load service provided by the utility varies across the system, from bus to bus, and if so, how are the Locational Marginal Prices (LMPs), which are determined from market auctions, affected by such variations. The thesis also answers the important question of how the LMPs can be differentiated by the Load Service Probability (LSP) at a particular location, so that it is fair to all customers. A new approach to determining the bus-wise LSP indices in power systems is proposed in the thesis. These LSP indices are arrived at by defining and computing bus-wise Loss of Load Probability (LOLP) indices. The discrepancy in LMPs with respect to the bus-wise LSP is then investigated and the bus-wise LSP indices are thereafter utilized to formulate a novel proposition for LSP-differentiated LMPs for electricity markets. The thesis furthermore addresses the medium-term Transmission Reinforcement Planning (TRP) problem and proposes a practical approach to TRP by making use of standard design practices, engineering judgement, experience and thumb-rules to construct a Feasibility Set. The Feasibility Set helps in limiting the type and number of reinforcement options available to the transmission planner in selected existing corridors. Mathematical optimization procedure is then applied considering the Feasibility Set, to attain an optimal set of reinforcement decisions that are economical and meets the system demand in the medium-term, without overloading the transmission system. Two different solution approaches- the Decomposition Approach and the Unified Approach are proposed to solve the TRP optimization problem.

Power business is a somewhat special business¡CIt has no stocks. Because of this, power business is classified into inherent monopoly business for a very long time before. Nowadays, most governments of developed countries changed their point of view; they modified the relevant law and began to allow more than two power companies to run on the same power supply area since few years ago. Taiwan's government is affected by this thinking and doing in 1990 and adopted it later since 1994. Firstly, they permitted private power stations built by private enterprises in1995. Since then, domestic power business is treated as a ¡§step by step open¡¨ business. Different from what other Independent Power Station (So called I.P.P.)has done, Taiwan Power Company has adopted the policy of allocating their maintenance crew in each nuclear and fire power station instead of establishing a dependent sub-maintenance company or outsourcing maintenance job to other power station maintenance contractor as the other I.P.P.s. has done¡C This is indeed a quite controversy policy even inside the Taiwan Power Company. But most of the members and representatives of workers Union are against any relocating crew or changing policy and even stronger. The policy of privatizing Taiwan Power Company and open competition of electricity-providing is determined definitely by R.O.C. government, still the progress of it is not very clear to the relevant stakeholder. However, the competence of Taiwan Power Company will be needed much more than ever. And the operation cost and management performance is therefore a major and important factor to the position of Taiwan Power Company in the future electricity market. This research is intended to study only benefit of cost-down and efficiency-rising element of the electricity power company and its nuclear and power station, it concerns nothing to do with any social topics such as working right of the crew , opinion and attitude of the work union and the like.

Power systems all over the world advance towards the direction of deregulation in the past few years. Introducing competition mechanism and the principle of market rules in deregulation. Utility companies will face unprecedented changes and challenges. Taiwan power company is also working on the deregulation direction with a competitive environment opened up, it will improve the scientific and technological levels and the service quality of electricity. Load management functions as the marginal price of electricity is predicted. Consumers can get Real-Time Pricing information determine their own buying strategy. One most representative deregulation example in U.S.A. is the PJM(Pennsylvania¡BNew Jersey¡BMaryland)system combining generating, transmitting, distribution and sales of electricity. It offers the information of real-time power supply and is one of the cases in the world. Historical data in the thesis comes from PJM. Artificial Neural Network was designed to the Locational Marginal Price(LMP), considering the factors such as temperature and other relevant data from deregulation with the introduction of various parameters in forecasting, and the use of week as a counting base. LMP will be forecasted. The forecasted results will be to check the accuracy and performance with initial data.

This study attempts to analyze the deregulation process of downstream oil industry in Turkey and to develop policies concerning Turkish downstream oil industry. Privatization of Petrol Ofisi and T&Uuml / PRAS and the enactment of the Petroleum Market Law in 2003 were the main implementations of radical deregulation process of downstream oil industry. The main goal of deregulation process has been to create a competitive market. However, establishment of a competitive downstream oil industry has not been achieved, yet. Despite the price liberalization, price competition between distribution companies has not been realized, so far. T&Uuml / PRAS was transformed to a private monopoly through the privatization. Moreover, price liberalization has increased both the refining margins of T&Uuml / PRAS and distribution margins of distribution companies at the expense of consumers. A comprehensive competition policy about downstream oil industry should be developed immediately. Furthermore, due to its poor performance since 2003, Energy Market Regulatory Authority&rsquo / s (EMRA) responsibilities in downstream oil industry should be removed and a new regulatory authority which will solely interest with petroleum sector should be established.

Under deregulated environments, transmission system is playing an increasingly vital role in the modern power markets. Despite the widespread experience of electricity restructuring during the past decade, important issues remain open about the best way to organize transmission to support reliability management and market trading. In the absence of an appropriate mechanism for the transmission services unbundling, it is unlikely to take into consideration the effects of power flows that diverge from the contract path. When individuals do not confront the respective responsibility for the transmission services, the market outcome will be inefficient. Allocations of transmission loss and costs to the market participants are essential for the transmission services unbundling. In this respect, two methods are proposed in this dissertation to provide technical and economical signals for the allocations. Based on circuit theory, the first method proposes a new procedure to trace the power flows on the transmission lines. Starting with the computation of an individual generator¡¦s or load¡¦s contributions to the line currents, the network is then decomposed into different networks. In each decomposed network, bus injections and line power flows are replaced by components related to only one generator or load. Based on the components of real power flow on the transmission lines, the allocations of transmission loss and supplementary cost can be easily performed. In the second method, AC power flow based injection shift distribution factors (ISDFs) are exploited for calculating generalized generation distribution factors (GGDFs) and generalized load distribution factors (GLDFs). GGDFs and GLDFs can be used to derive the components of the real powers on each transmission line contributed by the generators and loads. Three bus-oriented schemes are proposed to allocate the transmission loss. They are aimed to reduce the number of distribution factor computation and to reflect the activity in a competitive market. The reactive powers incurred on transmission lines due to the generators and loads are also derived using the reactive power distribution factors (RPDFs). Based on the components of complex power flow on the transmission lines, transmission cost allocation methods are proposed to charge the impacts of power transactions on the network. In order to take the service reliability into account the service charges consist of the components representing normal and the contingency states respectively.

Abstrakt                                                                                              Syftet med undersökningen var att belysa och jämföra förändringar som sker i den kommunala musikskoleverksamheten när den utsätts för konkurrens och finansiering via checksystem. Undersökningen begränsades till Nacka och Österåker, de kommuner där systemet använts längst. Genom intervjuer av kommuntjänstemän och musikskoleledare samt i en enkätstudie hos musikpedagogerna undersöktes vilka faktorer som lett till förändringar i verksamheten och hur dessa upplevdes, samt hur de olika parterna såg på den framtida kommunala musikskolan. Resultatet av undersökningen visade att det var checksystemets utformning och kommunens styrning som bidrog till förändringar i verksamheten. Nacka kommun och Österåkers kommun hade utformat olika checksystem som gav skilda konsekvenser för verksamheterna. Österåkers system var generösare för kunden än Nackas system. Samtidigt valde Österåkers kommun att i större utsträckning styra musikskoleverksamheten i strävan efter en form av rättvisa mellan de olika aktörerna. Det informanterna upplevde som positivt med konkurrensutsättningen var att kunderna inte behövde stå i kö till verksamheten, men konsekvensen av att kön var borta var att många lärare fått svårare att fylla sina tjänster. Den ständiga elevrekryteringsprocessen och känslan av att ha eget ansvar att fylla sin tjänst skapade stress hos lärarna. På en konkurrensutsatt marknad ökar behovet av marknadsföring och vi såg en risk att instrument- och genrebredd minskar om kunden inte får tillräcklig information om den kommunala musikskolans utbud. Lärarna och tre av våra fyra informanter önskade att den kommunala musikskolan i framtiden ska ha ett uppdrag att bevara mångfald och bredd gällande genrer och instrument. / Abstract                                                                                                The purpose of the study was to illustrate and compare the changes taking place in municipal music school activities when these were exposed to competition and financing via voucher systems. The investigation was limeted to Nacka and Österåker, the municipalities where the system has been used the longest. We examined, through interviews with city officials and music school managers – plus a questionnaire study among music masters – the factors that had led to changes in the activities and how people reacted to these changes, as well as how the various parties appraised the future of the music school. The results of the survey showed that the changes in the activities were due to the design of the voucher system and the municipality's control. Nacka and Österåker had created different voucher systems that led to different consequences for the activities. Österåker’s system was more generous to the customer than the Nacka system. Meanwhile Österåker chose to a greater extent to control the activities of the music school in order to achieve a certain degree of fairness between the parties. A positive result of the opening to competition was, according to the informants, that customers did not have to queue up for activities. On the other hand, the consequence of no queuing was that it has become harder for many teachers fill up their posts with pupils. The continuous process of recruiting new pupils and the feeling of responsibility for filling up their own posts caused stress among the teachers. On a competitive market, the need for marketing is increasing and we saw a risk that the breadth of musical instruments and genres will decrease if the customer does not receive sufficient information about the offerings of the local music school. The teachers and three out of four informants wished for the future that the local music school should have the mission to preserve the diversity and breadth regarding genres and musical instruments.

The effects of the March 1990 deregulation policy on the marketing of agricultural products are examined in terms of price levels, price variability and market integration for maize, tef, noug and sorghum for the Bako, Tibe and Shoboka markets of the Wollega and Shoa regions of Ethiopia. Weekly price data from 1986 to 1993 are used. The price level and price variability changes are tested using a T-test and F-test respectively while market integration is tested using traditional price correlation analysis and Granger's and Johansen's methods of cointegration analysis. Deregulation has resulted in an increase in real prices which has also, in most cases, been accompanied by an increase in price variability. The price correlation and Granger methods indicate improvement in market integration under deregulation while Johansen's method indicates similar levels of market integration for both regulated and deregulated marketing systems. Increased price variability might thwart the perceived benefits of deregulation and further research is needed to identify its causes and to provide appropriate policy recommendations.

The general purpose of this study was to determine whether deregulation in Indiana via Public Law 25-1995 has had an adverse effect on either quantity or adequacy of new school construction. Data for projects approved during the three years preceding deregulation (1992-1994) were compared with data for projects approved during the three years following deregulation (1996-1998).Data for the projects were obtained from state agencies. They included the number of projects approved, the cost of each project, the size of each project, and school district enrollment, and the assessed valuation of each school district in each of the years studied. Major findings included: (a) The annual average number of approved projects prior to deregulation was 14 and the annual average following deregulation was 13. (b) The size of approved elementary level projects did not change following deregulation (it remained at 138 square feet per student). The size of approved middle level projects decreased from 196 square feet per student to 170 square feet per student after deregulation (a 14% decrease), and the size of middle schools became less uniform. The size of approved high school projects decreased from 230 square feet per student to 209 square feet per student after deregulation (a 9% decrease). (c) The average cost per square foot of approved elementary school projects declined from $113 to $109, and the average cost per square foot of approved high school projects declined from $119 to $107 after deregulation. The average cost per square foot of approved middle level projects increased from $105 to $110. (d) School district wealth did not have a significant effect on either the quantity of projects or the size of projects. (e) School district size did not have a significant effect on either the quantity of projects or the size of projects.Recommendations include additional long-term studies to address not only the effects of deregulation on school facilities, but also the effects of deregulation on educational programming. / Department of Educational Leadership