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By using a three dimensional computational method, gas flow and heat transfer have been investigated and analyzed for both cathode / anode ducts of proton exchange membrane fuel cells. The Brinkman- Forchheimer-extended Darcy model is employed to investigate the flow inside the porous layer of the duct. Effects of inertial coefficient, together with permeability, effective thermal conductivity, th

How human exposure levels of air pollutants are related to health status is an issue of great importance for e.g. infrastructural and urban planning. This study analysed the exposure levels of NO2 for individuals depending on their country of birth. The study was conducted within three different study areas of varying characteristics and extent to decide whether any such associations existed and i

Collective action can be challenging in the governance of common pool resource. While social learning has the potential to facilitate negotiations and communications, power imbalance can still challenge the common pool resource (CPR) governance. In an attempt to study collective action in that context, I undertook a qualitative case study at the Cañete basin, Peru. The primary data was manly colle

Crimes and violations are constantly committed against human rights all over the world. Whole populations are victims of genocide and ethnic cleansing, while the international society has a commitment and responsibility in their hands to intervene. But what happens when the international society and the United Nations Security Council are unwilling to come to a unanimously decision? This study has

In crisis-hit Greece, there have been an unprecedented rise of grassroots self-help initiatives for the last three to four years, and the whole phenomenon has come to be known as the quest for social and solidarity economy. With the consolidation of political and economic power in today’s capitalist market economy, the social and solidarity movement in Greece has been seeking for a way forward to

This thesis provides an account of the storage strategies for mitigation of excess electricity production (EEP) from wind energy in the Öresund region of Denmark and southern Sweden, characterized by an increasing share of wind power. Hydrogen is a versatile storage technology with potential in both large and small scale options, and for utilization in several application areas. TIS framework and

Denna uppsats fokuserar på offentliga upphandlingar och behandlar begreppet onormalt låga anbud. Dessa anbudens låga nivå kan vara grundade i dolda motiv eller missförstånd från anbudsgivaren. Detta medför att den upphandlande myndigheten kan vilja förkasta det aktuella anbudet. Den låga nivån kan däremot lika gärna vara helt legitimt och bör därmed inte förkastas. Regelverket samt praxis på områdThis thesis focuses on public procurements and deals with the concept of abnormally low tenders. The low levels in a tender can be founded in a hidden agenda or in a misunderstanding by the tenderer. This means that the contracting authority may wish to reject the current offer. The low level, on the other hand, can just as easily be completely legitimate and should therefore not be discouraged. T