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Föremål i etnografiska museer återspeglar på olika sätt människans naturrelationer. Även botaniska trädgårdar visar mänskliga artefakter, givetvis inte i samma mening som etnografiska föremål men ändå såsom en omvandling av naturprodukter. En sådan omvandling kan t.ex. ske via domesticering eller genom att man använder vissa delar av vilda växter som mediciner. En växt blir till medicin via mänskl
This Thesis focuses on thermal design of permanent magnet synchronous electrical machines (PMSM) used in hybrid vehicles (HEVs) or zero emission vehicles (ZEVs). Electrical machines in such applications are usually designed with high power density requirements but within limited spaces, which lead to high rate of heat generation but low rate of heat dissipation. Therefore, highly efficient thermal
Human appreciation of nature and natural elements is ubiquitous. The role of emotions in human relationships with nature has received increasing attention within environmental psychology, for example by employing constructs such as affinity with nature. Also, researchers are recognizing the importance of studying emotions for understanding human-wildlife interactions (Jacobs, 2009; Johansson &
Frequency dependence of the permittivity and permeability is inevitable in metamaterial applications such as cloaking and perfect lenses. In this paper, Herglotz functions are used as a tool to construct sum rules from which we derive physical bounds suited for metamaterial applications, where the material parameters are often designed to be negative or near zero in the frequency band of interest.
According to the provisions laid down in Article 19 of the 1969 Vienna Convention on the Law of Treaties a state that consents to be bound by a treaty may not formulate such reservations to the agreement, which are incompatible with its object and purpose. This socalled 'object and purpose criterion' has long been puzzling actors of public international law. What does it mean for a reservation to
Based on energy conservation, an optical theorem is constructed for a slab having an arbitrary periodic microstructure in a plane. A sum rule for low pass structures is derived using analytic properties of Herglotz functions based on causality and passivity. The sum rule relates the extinction cross section to the static polarizability per unit cell, and quantifies the interaction between the slab
The increasing use of light metals and high strength steel in the automobile industry, demands for new sheet metal forming processes that can be applied successfully. In this thesis the subject of warm sheet metal forming is studied. In warm sheet metal forming the temperature of the blank is elevated either globally to one temperature evenly over the blank or locally where the flange region of th
