This paper describes a method for wireless energy transfer via near-field electromagnetic inductionthat is inexpensive, simple and can be applied to almost any type of system, regardless of size andenergy demands.The method uses a primary unit consisting of an oscillator, amplifier and inductive coil thattransfers energy to a secondary unit consisting of a coil, rectifier and voltage regulator. Two typesof oscillators and several amplifier designs were realized and evaluated together with a multitudeof flat coils of both monofilar and bifilar type.The results show that it is important to use an oscillator whose frequency is dependent on theinductance of the connected transmission coil, such as the Colpitts oscillator. This is preferable toan oscillator with a preset frequency, such as a Schmitt-trigger oscillator..

AbstractAs a developer of database-driven applications you will be faced with difficult choices, when it comes to choosing database, server and programming language. For the result to be satisfactory it requires the different techniques to interact well with each other and also fulfill performance expectations. This is even more important when the application is deployed to the cloud and the response time plays a major role.This paper evaluates different databases and their performance. To test the databases there was an application made in the server script language PHP or Hypertext Preprocessor and it was deployed to Windows Azure cloud platform. The test applications task is to call and load databases by controlled requests which creates, reads, updates and deletes data in an relatively large extent.The results shows that locale databases or databases in the same data center as the server generates the fastest response.

Orust Kretsloppsakademi is a nonprofit organisation, with a goal of annually generate the same amount of electrical energy that is consumed. Orust is an island on the west coast of Sweden, north of Gothenburg. The population of 15 000 reaches 40 000 during summer, due to the large amount of vacationer. The total electricity demand is 174 GWh a year with a maximum power need of 32 MW. This report presents an analysis for the plausibility of their plan and from a power system stability perspective, the effects on the electrical grid.The conclusion is that the restraints for development of power generation from wind, solar and wave generation, are the power systems capability to transfer power, primarily in the transformers of the grid.

The following article consists of two parts; one part is about house construction and the other is a specialization about radon. The house construction part describes how to project a house from start. It contains the conformation of the house, the installations needed, calculations considering the strength of the construction, energy calculation and what materials were chosen. Calculations considering the costs of building and operate the house has been carried out. The result showed that the house would cost approximately two million Swedish kroner to build and thirteen thousand kronor a year to operate.

Suggestion for a new operahouse in stockholm, förslag på nytt operahus i stockholm. Stockholmsoperan..

This study consists of a literature study and a survey in Tamil Nadu, India. The aim of the study was to get an understanding of horse feeding in tropical climates and what kind of feeding related problems that could occur because of the fodder. Information and data were collected from eight different stables and from Tamil Nadu University of Agriculture in the region of Tamil Nadu in March-April 2009. The horses in Tamil Nadu were given rice straw, unknown grass, Cynodon dactylon, lucerne, maize, Pennisetum glaucum x Pennisetum purpureum hybrid and Chloris gayana as roughage. As concentrates, the horses were given wheat bran, oats, barley, soybean meal, maize, carrots, coconut cake, peanut cake, horse gram and chick pea.

The development of solar photovoltaic (PV) is increasing,with declining module prices and with a strongenvironmental profile. Policies are developed around theworld to achieve the targets set for renewable energy.In Helsingborg, the local power company Öresundskraft isworking with solar PV to achieve the goals of the city.With their vision: - Energy for a Better World and Powerfor the Region, their work with developing the local solarPV market is continuing and the next step is to create asolar PV policy. Today their offer is 1 SEK/kWh for theexcess electricity delivered to the grid.It turns out that compensating the customer is a vitalpolicy and it has to be dynamic to follow the decisions ofpolitics. The same survey shows indeed, thatenvironmental and technical part is of interest. Solar PVwill be supported locally to act on environmentalsustainability and locally produced electricity and withthis Öresundskrafts vision will be achieved..

Syftet med detta examensarbete är att kartlägga potentialen för energieffektiviseringar i småhus och flerbostadshus i Uppsala kommun fram till 2050. Studien inkluderar både befintliga och framtida byggnader. Uppsala kommun arbetar tillsammans med flera olika organisationer i kommunen med att ta fram en ?Färdplan för ett klimatpositivt Uppsala år 2050? (kallad Färdplan 2050), detta med uppdrag av Naturvårdsverket. Målet med Färdplan 2050 är att ta fram en långsiktsprognos för hur Uppsala kommun kan minska utsläppen av växthusgaser med 45 % per invånare till år 2020 jämfört med år 1990.

This paper aims to deepen the understanding of how the European Council frames the climate crisis and its implications for political legitimacy and policymaking. The climate crisis is one of the most pressing challenges of our time, influencing not only environmental systems but also societal structures and governance. By analyzing the European Council?s framings during the 2019?2024 strategic agenda, this research investigates how political actors shape narratives to justify actions and policies in response to the climate crisis. Through a discourse analysis of official Council conclusions, using a framework drawing on six typologies of framing, the research examines the Council's evolving narrative in the context of multiple crises, including the COVID-19 pandemic and the war in Ukraine.

The dairy cow?s ability to resume estrus after calving and to conceive is affected by their metabolic status after calving. For high yielding cows there is a high risk that the feed intake will not be sufficient to cope with the increased energy demands after calving, and the cow will end up in a state of negative energy balance. Energy balance can be measured in various ways, for example by body condition score or by plasma concentration of several metabolic hormones and metabolites. After calving, endocrine pathways stimulate tissue mobilization; insulin signaling is blocked, the concentration of insulin-like growth factor-1(IGF-1) and leptin decreases, and the concentration of growth hormone (GH) increases.

The forestry companies? operational planning process is these days dependent on reliable, efficient and user-friendly computer-based support systems. This study is an evaluation of Holmen Skog's current computer-based systems. The aim of this study is to: ? investigate the work pattern of the production managers when using the information system to plan the harvesting operation; ? investigate the efficiency and user friendliness of the information system with the different work patterns and to find the strengths, weaknesses and bottlenecks in the current system; ? find out if the type of object, the volume, the area of the harvesting object affects the time and work pattern; ? examine how this type of study is met by the employees and what factors that is critical to avoid feelings of intrusion. The conclusions of the study were: ? there is a large variation between the work patterns of the production managers and the time spend to perform the operational planning; ? the mainframe computer system used by Holmen Skog is clear, has short response times, is robust and conveys relevant information; ? the computer systems are however divided in many subsystems.

This essay started with a describing of Vision2020 that aims to get incoming tourism doubled and to make global travellers choose Sweden as their destination at the first place. Furthermore, we discuss those 12 priority markets that a Swedish leading communications company in the tourism Visit Sweden puts effort and promotes. Poland was not on the list of the selected countries. With our research we aim to show that the Polish market has potential. Compelling factors point to that Sweden and Poland are neighbour countries with good transport connections and, not least, that the countries have long historical relationships with each other.

The dissertation deals with an account of actual problem, which can arise within EMC and power quality. The cause of power interruption and what can be done to minimise the power interruption is discussed. It also includes a definition of planning levels and which factors one needs to have control over to carry out a possible planning strategy and how the local distributions net could be more secure. The electrical net could be secure but no system can be free from interruption.The dissertation examines two distribution transformers: GLA40T1 (Glansås) and T399 in Tranås Energy which don?t have regulators.

Detta examensarbete skrevs på uppdrag av Södra skogsägarna. Syftet med arbetet var att fördjupa kunskapen om marknaden för pannved i Nederländerna. Arbetet beskriver bland annat kunder till vedföretagen, priser för ved, var veden kommer ifrån samt hur vedföretagen ser på framtiden inom vedmarknaden. Förutom detta ger arbetet även en bild av Nederländerna, dess energiförsörjning, den förnyelsebara energin och skogsråvaran i landet. Teorierna som ligger till grund för arbetet är framförallt marknadsundersökning, omvärldsanalys och beskrivning av erbjudandet.

This paper aims to analyze the effect of the American Subprime crisis of 2007 through the perspective ofHaynes Minsky?s model according to Charles Kindleberger. The investigation revolves how the anatomyof a financial crisis develops and how it is applicable to the Subprime crisis. More specific conclusionsare derived from applying Minsky?s model to the three largest American indices; Dow Jones industrialaverage, S&P500 and NASDAQ.To deepen the analysis the Case-Shiller home price indices acts as a second parameter tocompliment Minsky?s perspective with Robert J.