Sökning: "electronic structures"

Visar resultat 1 - 5 av 860 avhandlingar innehållade orden electronic structures.

1. 1. Electronic Healthcare Ontologies : Philosophy, the real world and IT structures

   Författare :Martin Berzell; Ingemar Nordin; Urban Forsum; Daniel Karlsson; Ingvar Johansson; Linköpings universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Philosophy; medical informatics; ontology; terminology; critical realism; immanent realism; Filosofi; medicinsk informatik; ontologi; terminologi; kritisk realism; immanent realism; Theory of science; Vetenskapsteori; Theoretical philosophy; Teoretisk filosofi;

   Sammanfattning : The thesis investigates how the notion of ‘ontology’ has been used in the field of medical informatics and knowledge representation. Partly to investigate what an ‘ontology’ can be said to represent and what requirements we can have on a good ‘ontology’. LÄS MER

3. 2. Alternative electronic packaging concepts for high frequency electronics

   Författare :Wolfgang Peter Siebert; Sture Petersson; Shaofang Gong; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Connector; cooling; electronic; elastomer interconnect; EMC; shielded enclosure; high frequency; PCB; PWB; reverberation chamber; seams; soldering; twisted pair cable; Elektroteknik; Electrical engineering; Elektroteknik;

   Sammanfattning : The aim of the research work presented here, is to contribute to the adaptation of electronic packaging towards the needs of high frequency applications. As the field of electronic packaging stretches over several very different professional areas, it takes an interdisciplinary approach to optimize the technology of electronic packaging. LÄS MER

4. 3. Design of Functional Structures and Measurement Techniques for Electromagnetic Waves

   Författare :Johan Lundgren; Teoretisk elektroteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; functional structures; frequency selective structures; polarization selectivity; metasurface; near-field measurements; antenna measurements; scattering measurement; power density; random media;

   Sammanfattning : Electromagnetic fields exist all around us. Through evolution, nature has developed tools to interact and use these fields, where our eyes are a spectacular example. Humans have a long history of developing structures and objects of their own to alter and interact with these fields. LÄS MER

5. 4. Individual information system acceptance behaviour : An electronic ordering system case

   Författare :Katarina Arbin; Handelshögskolan i Stockholm; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; information system; e-procurement; e-ordering; individual; acceptance; adoption; continued use; behaviour; structures; routines; longitudinal; case study;

   Sammanfattning : Organizations have spent and continue to spend millions of dollars on information systems (IS) in order to enable business success. Information systems have long been used to help managers make better decisions, better understand the nature of customers and improve employee productivity. LÄS MER

7. 5. Tunneling Based Electronic Devices

   Författare :Erik Lind; Institutionen för elektro- och informationsteknik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SiGe; Esaki Diodes; classical mechanics; quantum mechanics; relativity; termodynamik; relativitet; kvantmekanik; statistisk fysik; Matematisk och allmän teoretisk fysik; thermodynamics; gravitation; statistical physics; GaAs; Mathematical and general theoretical physics; Resonant Tunneling Permeable Base Transistors; Resonant Tunneling Diodes; klassisk mekanik; Fysicumarkivet A:2004:Lind;

   Sammanfattning : This thesis concerns different kinds of tunneling based devices all showing negative differential resistance. The thesis is divided in three parts, resonant tunneling transistors, Esaki diodes and coupled zero dimensional systems. LÄS MER