Sökning: "short-term exchange"

Visar resultat 1 - 5 av 44 avhandlingar innehållade orden short-term exchange.

1. 1. Short term water heat storage : studies of velocity and temperature fields and their importance for sizing of the storage

   Författare :Jan Dahl; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

   Sammanfattning : Short term water heat storage's have been introduced in many district heating systems. The main reason for this is the possibilities opened by the storage for optimization of the generation of heat and electricity in combined heat and power plants. LÄS MER

3. 2. Short term water heat storage : an experimental and numerical investigation of phenomena that affect the degree of thermal stratification

   Författare :Roger Hermansson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

   Sammanfattning : Thermal stratification was studied by measurements of the temperature and velocity fields in water heat storage's and by numerical simulations. The work includes experimental investigations in three model heat storage's of different size and comparisons to numerical simulations for two of the storages. LÄS MER

4. 3. Gift and Exchange in the Reciprocal Regime of the Miskito on the Atlantic Coast of Nicaragua, 20th Century

   Författare :Christopher Kindblad; Sociologi; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; analogic code; digital code; tragedy of the commons; egalitarian norms; entrepreneurship; symbolic transformations; long-term gift; short-term exchange; reciprocal regime; Tasbapauni; Nicaragua; Miskito; paradox; Sociology; Social and economic history; Sociologi; Ekonomisk och social historia; Miskito; Social anthropology ethnography;

   Sammanfattning : This dissertation is a historical-comparative analysis of a conflict that has developed in the economic system of the Miskito in the 20th century, concerning the use of common property resources. The study is based on empirical material collected in a Miskito/Creole village on the Atlantic Coast of Nicaragua in the 1990s. LÄS MER

5. 4. Short Term Operation of District Heating Systems: An Application of Mathematical Programming

   Författare :Hans Eriksson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : This work treats the introduction of rigorous optimisation methods as a decision aid in the short term operation of district heating systems. The conditions for operation of district heating systems are investigated. Arguments for the necessity of a systems model that is capable of handling the discrete nature of the problem are presented. LÄS MER

7. 5. Psykodynamisk korttidsterapi : En intensivstudie av samspel, förändring och utfall

   Författare :Gunvor Stenlund; Institutionen för psykologi; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; PORT; perceptgenetic tests; structural change; affective communication; therapeutic alliance; outcome; Psychodynamic short-term psychotherapy; process; DMT; Psychiatry; clinical psychology; psychosomatics; Psykiatri; klinisk psykologi; psykosomatik;

   Sammanfattning : The overall aim of the thesis was to investigate the effects of psychodynamically oriented psychotherapy and gain an increased understanding of the curative factors in psychotherapy by thorough examination of the therapeutic alliance and of client change. The core of the thesis is a naturalistic study of 22 short-term dynamic psychotherapies and a follow-up 6-12 months later. LÄS MER