Search for dissertations about: "GRA"

Showing result 1 - 5 of 6 swedish dissertations containing the word GRA.

  1. 1. Modelling and evaluation of the effects of traffic safety measures Comparative analysis of driving assistance systems and road infrastructure

    University dissertation from Lunds Tekniska Högskola Institutionen för Teknik och Samhälle Trafik och Väg

    Author : Meng Lu; Lund University.; Lunds universitet.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vägtransportteknik; GRA; Road transport technology; grey relational analysis; driving assistance systems; traffic safety principle; quantitative causal chain; comparative analysis; QCC model; road infrastructure; road traffic safety;

    Abstract : Improvement of road traffic safety is an important policy issue. Various categories of meas-ures are available to effectuate this. The thesis focuses on two categories: road infrastructure and driv-ing assistance systems. READ MORE

  2. 2. Immune dysregulation in HIV-1 infected lymphoid tissue

    University dissertation from Stockholm : Karolinska Institutet, Department of Medicine at Huddinge University Hospital

    Author : Homira Behbahani; Karolinska Institutet.; Karolinska Institutet.; [2002]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; HIV-1; HAART; cytokines; chemokines; lymphoid tissue; perforin; Nef; LIF; placenta; chemokine receptor;

    Abstract : Lymphoid compartments are major sites for HIV- 1 replication. We evaluated cytokines, chemokines and immunological effector function at the single cell level in lymphoid tissues in chronically HIV-1 infected patients. READ MORE

  3. 3. Application of Statistical Methods on Occupational Health and Safety Management in the Mining Industry in Ezhou City, China

    University dissertation from Luleå : Luleå University of Technology

    Author : Bao Jiangdong; Luleå tekniska universitet.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Arbetsvetenskap; Human Work Sciences;

    Abstract : Chinaʹs mining enterprises are confronted with insufficient safety investments, insufficientsafety benefits, recurrent occupational diseases and accidents, low level of safety riskmanagement, and many employee complaints, that seriously affect the economicdevelopment and the sustainable development of the country. Selection of scientific, accurateand comprehensive evaluation methods of all aspects of occupational health and safetymanagement will directly affect the evaluation results and then the direction of improvement;which is greatly needed. READ MORE

  4. 4. In-situ TEM Probing of Nanomaterials

    University dissertation from Sundsvall : Mid Sweden University

    Author : Magnus Hummelgård; Mittuniversitetet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nanotechnology; in situ; TEM; probing; nanowires; nanoparticles; ink; TECHNOLOGY Engineering physics Other engineering physics; TEKNIKVETENSKAP Teknisk fysik Övrig teknisk fysik; TECHNOLOGY Engineering physics Material physics with surface physics; TEKNIKVETENSKAP Teknisk fysik Materialfysik med ytfysik; NATURAL SCIENCES Physics Condensed matter physics; NATURVETENSKAP Fysik Kondenserade materiens fysik;

    Abstract : Nanomaterials because of their small size, may have special properties unlikely to be seen in ordinary types of materials. Nanomaterials like nanotubes,nanowires and nanoparticles are best studied at the nanoscale, vital but also problematic. READ MORE

  5. 5. On Methods for Solving Symmetric Systems of Linear Equations Arising in Optimization

    University dissertation from KTH Royal Institute of Technology

    Author : Tove Odland; KTH.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; symmetric system of linear equations; method of conjugate gradients; quasi-Newton method; unconstrained optimization; unconstrained quadratic optimiza- tion; Krylov subspace method; unnormalized Lanczos vectors; minimum-residual method; symmetriska linjära ekvationssystem; konjugerade gradientmetoden; kvasi- Newtonmetoder; optimering utan bivillkor; kvadratisk optimering utan bivillkor; Kry- lovunderrumsmetoder; icke-normaliserade Lanczosvektorer; minimum-residualmetoden; Matematik; Mathematics;

    Abstract : In this thesis we present research on mathematical properties of methods for solv- ing symmetric systems of linear equations that arise in various optimization problem formulations and in methods for solving such problems.In the first and third paper (Paper A and Paper C), we consider the connection be- tween the method of conjugate gradients and quasi-Newton methods on strictly convex quadratic optimization problems or equivalently on a symmetric system of linear equa- tions with a positive definite matrix. READ MORE