Search for dissertations about: "Martin Johansson"

Showing result 21 - 25 of 56 swedish dissertations containing the words Martin Johansson.

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

    Author : Martin Berzell; Ingemar Nordin; Urban Forsum; Daniel Karlsson; Ingvar Johansson; Linköpings universitet; []
    Keywords : 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;

    Abstract : 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’. READ MORE

  4. 22. Essays on Health Shocks and Social Insurance

    Author : Martin Nilsson; Per Johansson; Johan Vikström; Lars Hultkrantz; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Health shocks; Socioeconomic status; Social insurance; Social costs; Economics; Nationalekonomi;

    Abstract : This thesis consists of four self-contained essays.Essay 1 (with Petter Lundborg and Johan Vikström): This paper provides new evidence on heterogeneity in the impact of health shocks by using register-based data on the entire population of Swedish workers. READ MORE

  5. 23. Control of Multi-Agent Systems with Applications to Distributed Frequency Control Power Systems

    Author : Martin Andreasson; Karl H. Johansson; Wei Ren; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Multi-agent systems are interconnected control systems with many application domains. The first part of this thesis considers nonlinear multi-agent systems, where the control input can be decoupled into a product of a nonlinear gain function depending only on the agent's own state, and a nonlinear interaction function depending on the relative states of the agent's neighbors. READ MORE

  6. 24. Travel – a risk factor for disease and spread of antibiotic resistance

    Author : Martin Angelin; Helena Palmgren; Birgitta Evengård; Anders Johansson; Anu Kantele; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Accident Prevention; Alcohol Drinking; Anti-Bacterial Agents; Antimalarials; Beta-Lactamases; Drug-Resistance; Bacterial; Enterobacteriaceae; Health Knowledge; Attitudes; Practice; High-Throughput Nucleotide Sequencing; Medication Adherence; Metagenome; Metagenomics; Patient Compliance; Proteobacteria; Risk Reduction Behaviour; Risk-Taking; Safe Sex; Travel medicine; Travel; Vaccination; Infectious Diseases; infektionssjukdomar; mikrobiologi; Microbiology;

    Abstract : As international travel is rapidly increasing, more people are being exposed to potentially more antibiotic resistant bacteria, a changed infectious disease epidemiology, and an increased risk of accidents and crime. Research-based advice is needed to adequately inform travellers about these risks. READ MORE

  7. 25. Limit theorems for generalizations of GUE random matrices

    Author : Martin Bender; Kurt Johansson; Arno Kuijlaars; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Random matrices; Central limit theorem; Dyson s Brownian motion; Interacting diffusion; Point process; Non-Hermitian; Scaling limit; MATHEMATICS; MATEMATIK;

    Abstract : This thesis consists of two papers devoted to the asymptotics of random matrix ensembles and measure valued stochastic processes which can be considered as generalizations of the Gaussian unitary ensemble (GUE) of Hermitian matrices H=A+A†, where the entries of A are independent identically distributed (iid) centered complex Gaussian random variables. In the first paper, a system of interacting diffusing particles on the real line is studied; special cases include the eigenvalue dynamics of matrix-valued Ornstein-Uhlenbeck processes (Dyson's Brownian motion). READ MORE