In this paper zero voltage switching converters are investigated. The investigation starts by discussing the RCD charge-discharge snubber. The concept of resonant and quasi-resonant DC link converters is discussed. One of the most promising quasi-resonant DC links reported in the literature is implemented and tested in a battery charger application. Simulated resonant link voltage and current wave

The concept of vandalism is analyzed as a symbolic act. An analysis of vandalism from a situational-positivistic, or a motivational-psychological, approach hardly gives an understanding of vandalism as a meaningful individual and social act. A humanistic and cultural perspective can supply ways to understand a nonprescribed behavior such as vandalism. The original meaning of vandalism is plunderin

The purpose of this paper is to demonstrate the close interaction between epistemic and evidential stance verbs on the one hand and social hierarchy and power on the other. It is hypothesized that there is a correlation between the degree and intensity of stance verbs and the social context in which they are generated. The data for the study comes from an online bulletin board, in which members ar

I tre fallrapporter från forskningsprojektet Framgångsrikt skolledarskap i olika skolkulturer presenteras resultat från omfattande empiriska undersökningar vid tre skolor. I rapporterna beskrivs och problematiseras skolornas respektive kultur: den aktuella gymnasieskolans kunskapskultur, där bildning kommit att bli ett kännetecken; den utvalda f-9-skolans karriärkultur, utsatt för ett kraftfullt f

This book describes, analyses, explains and compares the role performance of different presidencies. The expert and international authors ask why member states have different approaches and play the role differently, prioritising different functions and using a variety of strategies to realise their aspirations. The book consists of three parts i) describes the functions of the presidency, ii) com

I describe in section 1 how cyclical preferences can arise. In section 2, I relate preference to judgments of choiceworthiness and distinguish between two kinds of preference cycles, vicious and benign. In section 3, I run through the standard money pump in order to show, in section 4, how this pump can be stopped by foresight, using backward induction. A new money pump that *cannot* be stopped by

Popular Abstract in Swedish Denna avhandling är en dokumentation av mina undersökningar av det rumänska ordet. Jag har som allmänlingvist undersökt några aspekter av det rumänska ordet fonologiskt, fonetiskt och semantiskt. Det finns också mycket skrivet om morfologin i rumänska. Man är väl medveten om att en del suffix tar betoning och andra inte. Men ingen har utnyttjat denna kunskap för att sysThe book is divided into three parts. All three parts dealwith the Romanian word. Part A: Word stress has not been defined in one rule before. I show how one rule can be applied to nouns, verbs and countnouns of Romanian. The principal method is taken from lexical phonology. Part B: Part A gave me the idea to investigate phonological length in the forms of infinitive, 3sg imperfect and perfect. An

Finite quantal systems at high angular momenta may exhibit vortex formation and localization. These phenomena occur independent of the statistics of the repulsively interacting particles, which may be of bosonic or fermionic nature. We analyze the relation between vortex localization and formation of stable Wigner molecules at high angular momenta in the view of particle-hole duality. Trial wave f

I projektet har ett verktyg eller metod för bestämning av risk i vårdavdelningar tagits fram. Verktyget, Brandskyddsvärdering av vårdavdelningar (BSV-vård) kan användas för att bestämma den relativa säkerheten för olika avdelningar vad avser brand. Meningen är att BSV-vård skall kunna användas som ett komplement vid brandsyn. Verktyget kan också tjäna som checklista vid nyproduktion då den också g

In recent decades, a transformation of traditional industries has taken place in large parts of the Western world, involving a number of interesting combination processes. One manifestation of Industrial Cool may be referred to as 'recycled factories', whereby different types of cultural institutions have established themselves in industrial premises and touched up the aesthetics of a former indus

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DU MÅSTE LÄRA DIG att leva med värken, smärtan och tröttheten, är besked som många patienter får i sjukvården. Sällan får de reda på hur det ska gå till. I samband med beskedet upplever många att livet tar slut. Men egentligen är det början på en resa som kan sluta i att livet blir mycket bättre än tidigare. Resan börjar med att man accepterar den situation man har hamnat i. Att acceptera är inte