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  • Alänge, Sverker, 1951- (författare)
  • El Método de Afinidad-Interrelación
  • 2013
  • Annan publikation (övrigt vetenskapligt)abstract
    • La herramienta que se presenta en este documento para la solución de problemas, el método de afinidad-interrelación (MAI), se basa en un uso sistemático de dos de las 7 herramientas de gestión: El diagrama de afinidad y el diágrafo de interrelación. Este se ha inspirado en un 19 enfoque paso a paso del profesor Shoji Shiba. Los pasos para llevar a cabo un análisis MAI se describen paso a paso, con comentarios adicionales para facilitar el proceso en nubes de comentarios. En este manual habrá instrucciones detalladas sobre cómo llevar a cabo el análisis, como en cuanto al número de participantes, cómo sentarse, cómo formular una pregunta de partida para analizar la forma de escribir los datos, el número de piezas de datos a fin de incluir, como combinar elementos de datos, etc. Estas instrucciones son recomendaciones pragmáticas sobre la base de una gran cantidad de experiencia práctica de utilizar el enfoque de MAI - que dará lugar a un análisis que ambos serán lo suficientemente profundos y será posible llevar a cabo dentro de un período de tiempo limitado. Si no se siguen las recomendaciones, por ejemplo, añadiendo más miembros del equipo, añadiendo más piezas de datos, etc - la complejidad aumentará y el tiempo para llevar a cabo el análisis será considerablemente más largo. Sin embargo, dependiendo de la finalidad específica del análisis de este tipo de desviaciones del proceso recomendado puede ser efectuado, teniendo en cuenta los requisitos de tiempo adicional. Para los usuarios por primera vez, se recomienda encarecidamente seguir las instrucciones detalladas en orden para aprender a utilizar el método de la manera más eficiente en tiempo, con efectividad y calidad. Para un grupo principiante siguiendo las instrucciones se tomaría 3-4 horas para llevar a cabo un análisis. Para un grupo experimentado tarda 1-2 horas, siguiendo las instrucciones, y permitiendo un tiempo para discutir el siguiente paso después del análisis MAI.
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3.
  • Baumann, Henrikke, 1964-, et al. (författare)
  • Det specifika med miljösystemanalysen
  • 1999
  • Annan publikation (övrigt vetenskapligt)abstract
    • Sammanfattning av diskussion om vad forskning i ämnet miljösystemanalys innebär och innefattar.
4.
  • Bryngelsson, David, 1981-, et al. (författare)
  • The effect of food-price movements on African households - An investigation of food production and consumption patterns in four African countries
  • 2009
  • Annan publikation (övrigt vetenskapligt)abstract
    • The recent spike in world food prices has intensified the debate regarding the impact of food prices on poverty. In this paper we aim to assess households’ vulnerability to food-price increases in four countries in Sub-Saharan Africa. Using household data from the World Bank’s Living Standard Measurement Surveys in Ghana (2005–2006), Kagera region, Tanzania (2004), Malawi (2004–2005) and South Africa (1993) we analyze food production and consumption patterns in rural and urban populations. We use two established indicators of sensitivity to food price changes—one measuring the share of income spent on food, the other measuring net sales of food compared to total expenditures. We find that the shares of the populations spending more than half of their income on food ranges from 62–81% in rural areas and from 26–67% in urban areas. Further we find that in all regions studied, most households (74–99%) in rural areas are net buyers of food and stand to lose in the short term from higher food prices. As expected, for urban households this is true to an even higher extent. In contrast to earlier studies we look at all food items and not just one or a few staple foods, giving a better understanding of vulnerability to general food price changes. We find that the exclusion of non-staple foods has a significant impact on theresults.
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5.
  • Gaydadjiev, Georgi N., 1964-, et al. (författare)
  • Welcome to ICCD 2011!
  • 2011
  • Ingår i: Proceedings - IEEE International Conference on Computer Design: VLSI in Computers and Processors. - 1063-6404.
  • Annan publikation (övrigt vetenskapligt)abstract
    • On behalf of the organizing and program committee, we would like to welcome you to the 29 th IEEE International Conference on Computer Design 2011. The International Conference on Computer Design (ICCD) encompasses a wide range of technical topics and provides an ideal environment to discuss practical and theoretical work that enables cross-pollination. The ICCD venue and program reflect this goal. This year the conference is being held at the beautiful campus of the University of Massachusetts at Amherst, United States. © 2011 IEEE.
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  • Johansson, Daniel J.A., 1975-, et al. (författare)
  • Multi - model analyses of the economic and energy implications for China and India in a post-Kyoto climate regime
  • 2012
  • Annan publikation (övrigt vetenskapligt)abstract
    • This paper presents a modeling comparison project on how the 2°C climate target could affect economic and energy systems development in China and India. The analysis uses a framework that harmonizes baseline developments and soft-links seven national and global models being either economy wide (CGE models) or energy system models. The analysis is based on a global greenhouse gas emission pathway that aims at a radiative forcing of 2.9 W/m2 in 2100 and with a policy regime based on convergence of per capita CO2 emissions with emissions trading. Economic and energy implications for China and India vary across models. Decreased energy intensity is the most important abatement approach in the CGE models, while decreased carbon intensity is most important in the energy system models. Reliance on Coal without Carbon Capture and Storage (CCS) is significantly reduced in most models, while CCS is a central abatement technology in energy system models, as is renewable and nuclear energy. Concerning economic impacts China bears in general a higher cost than India, as China benefits less from emissions trading. Costs are also affected by changes in fossil fuel prices, currency appreciation from capital inflow from carbon trading and timing of emission reductions.
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  • Klement, Uta, 1962- (författare)
  • Practical Metallography 12/2013
  • 2013
  • Annan publikation (övrigt vetenskapligt)abstract
    • Swedish issue of Practical Metallography compiled by Uta Klement including 4 scientific articles, editorial and interview.
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10.
  • Mousavi Bideleh, Seyed Milad, 1985-, et al. (författare)
  • Optimization of a bogie primary suspension damping to reduce wear in railway operation
  • 2013
  • Ingår i: In Book of Abstracts, ECCOMAS Thematic Conference, Multibody Dynamics 2013, 1-4 July 2013, Zagreb, Crotia, Edited by Zdravko Terze. - 978-953-7738-21-1 ; s. 421-422
  • Annan publikation (övrigt vetenskapligt)abstract
    • An optimization problem is formulated to attain the vector of optimized primary suspension passive dampers of a bogie in order to minimize wear in railway applications. A mechanical system with five degrees of freedom (DOF) comprising a single rigid wheelset attached to a fixed bogie frame is chosen to explore the effects of primary suspension damping components on wear. Different operational scenarios including tangent and curved tracks together with different levels of track irregularities are introduced to be used as inputs to model. The equations of motion of the system are obtained and the FASTSIM algorithm is employed to relate the creepages and the corresponding creep forces in different directions. At vehicle maximum admissible speed and a given set of operational scenarios, the optimized values of the primary suspension passive dampers in longitudinal, lateral and vertical directions are found through a genetic algorithm optimization routine in MATLAB. The outcomes of current research can not only be used to minimize wear in railway operation as well as reduce track access charges and maintenance costs, but also give insight into designing adaptive bogies.
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