Sökning: "VALENCE STATE"

Visar resultat 1 - 5 av 115 avhandlingar innehållade orden VALENCE STATE.

1. 1. Respiratory Sinus Arrhythmia and Emotion : Effects of pictorial stimuli and state anxiety

   Författare :Peter Jönsson; Institutionen för psykologi; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Psychology; state anxiety; emotion; HRV; heart rate variability; RSA; Respiratory sinus arrhythmia; Psykologi;

   Sammanfattning : Respiratory sinus arrhythmia (RSA) refers to heart rate variations due to respiration, which results from parasympathetic nervous system activity mediated via the tenth cranial nerve, the vagus. Thus, the magnitude of RSA is considered as an index of cardiac vagal tone. This thesis explored RSA during emotional responding in healthy women and men. LÄS MER

3. 2. Electrochromism and valence-state changes in li-intercalated tin oxide films

   Författare :Jan Isidorsson; Uppsala universitet; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

4. 3. Competing Under Pressure : State Anxiety, Sports Performance and Assessment

   Författare :Carolina Lundqvist; Peter Hassmén; Andrew Lane; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; competition; intra-individual variability; directional interpretations; emotions; sports performance; CSAI-2; psychometrics; Psychology; Psykologi; Samhällsvetenskap Humaniora;

   Sammanfattning : Elevated levels of anxiety are a common response to stressful competitive sports situations, are known to moderate athletic performance and are referred to as an unpleasant emotional state associated with perceptions of situational threat. The empirical studies in this dissertation considered primarily psychometric, methodological and conceptual issues of relevance for the study of anxiety and sports performance. LÄS MER

5. 4. Exploring Dye-Sensitized Mesoporous NiO Photocathodes : from Mechanism to Applications

   Författare :Lei Tian; Haining Tian; Leif Hammarström; Fabrice Odobel; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NiO; p-type; dye-sensitized solar cells; solid state; charge separation; charge recombination; charge diffusion; transport time; surface states; electron conductor; dye regeneration; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

   Sammanfattning : Increasing attention has been paid on solar energy conversion since the abundant solar energy possesses the potential to solve the problems on energy crisis and climate change. Dye-sensitized mesoporous NiO film was developed as one of the attractive photocathodes to fabricate p-type dye-sensitized solar cells (p-DSCs) and dye-sensitized photoelectrosynthetic cells (p-DSPECs) for electricity and chemical fuels generation, respectively. LÄS MER

7. 5. Influence of Global Composition and Local Environment on the Spectroscopic and Magnetic Properties of Metallic Alloys

   Författare :Weine Olovsson; Igor A. Abrikosov; G. Malcolm Stocks; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; core level shift; random alloy; first principles simulations; density functional theory; auger kinetic energy; Invar alloys; exchange parameter; classical Heisenberg Hamiltonian; complete screening; transition state; disorder broadening; Fysik; Physics; Fysik;

   Sammanfattning : Theoretical investigations of spectroscopic and magnetic properties of metallic systems in the bulk, as well as in nanostructured materials, have been performed within the density functional theory. The major part of the present work studies the differences between binding energies of electrons tightly bound to the atoms, the so-called core electrons (in contrast with the valence electrons), that is, core-level binding energy shift (CLS). LÄS MER