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Sökning: LAR1:lu > Luleå tekniska universitet

  • Resultat 1-10 av 414
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  • Abeysekera, John, et al. (författare)
  • Some design recommendations to improve comfort in helmets: a case study from China
  • 1996
  • Ingår i: Journal of Human Ergology. - Tokyo, Uni. of Tokyo Press.. - 0300-8134. ; 25, s. 145-154
  • Tidskriftsartikel (refereegranskat)abstract
    • Abstract in Undetermined Unless the basic user needs are satisfied in safety helmets, it is difficult to get workers to wear them habitually and for long periods. Hotness, weight and fitting problems are major wearability issues that require improvements. The enormous need for an optimally designed helmet in China prompted a case study on comfort aspects in helmets. The subjective impressions of the wearers of test helmets provided useful information for design changes to improve comfort. The heat transfer measurements through helmets indicated the need for ventilation openings to be provided on the shell of plastic helmets. Due to the advantage of low weight and good ventilation, it is recommended that cane helmets be further developed to improve protection, wearability and durability, and subsequently be produced in large scale.
  • Abeysekera, John, et al. (författare)
  • The identification of factors in the systematic evaluation of slip prevention on icy surfaces
  • 2001
  • Ingår i: International Journal of Industrial Ergonomics. - Elsevier. - 0169-8141. ; 28, s. 303-313
  • Tidskriftsartikel (refereegranskat)abstract
    • Slips and falls on icy roads often result in fractures or sprains and is a major problem in Nordic countries. Walking trials by 25 subjects wearing four types of winter shoes on five different icy walking surfaces provided subjective and objective measures of tendency to slip and number of slips, respectively. Since friction is a major determinant of a slip, the influence of material spread on icy surfaces, the surface temperatures and the shoe soling characteristics versus the Coefficient of Friction (COF) of the shoes were measured. Sand and gravel on icy roads had positive effects on improving COF. The study revealed that the aetiology of slips and falls is multi-faceted and attempts to solve the problem must adopt a systems approach. Perception of risk, aging, training, experience and postural balance are other factors to be considered in preventing slips and falls. Future research should concentrate on the degree of impact of each factor to the aetiology of slips and falls, which can help to decide priority action in preventing slips and falls.
  • Akselsson, K. Roland, et al. (författare)
  • Computer Aided Participatory Planning
  • 1990
  • Ingår i: Ergonomics of Hybrid Automated Systems II. - Elsevier. ; s. 69-76
  • Konferensbidrag (refereegranskat)abstract
    • A computer aided action research method for design of work places is presented. A project group of researchers, managers, union representatives, supervisors, shop-floor workers and representatives from the health-and-safety department analyse different aspects of the physical and organizational work environment. Factory layouts and the flow of raw materials and goods, truck routes and overhead crane movements are shown on a computer screen by means of simulation and animation techniques. Field studies at four companies strongly suggest that the animation helps the members in the project group to develop a common language and to better comprehend what a future factory design and work organization would look like.
  • Akselsson, K Roland, et al. (författare)
  • Computer-Aided Planning of New Production Lines in Mechanical Industries and of Working Environments for Disabled Persons
  • 1993
  • Ingår i: Production Research. - Elsevier. ; s. 85-86
  • Konferensbidrag (refereegranskat)abstract
    • To optimize productivity and working-life quality, it is important to understand and utilise the connections between productivity and working environment. Culture and the state of the market may affect the strength of these connections. However, in order to ensure flexibility and quality in products and services, it may be useful to have motivated, skilled and responsible coworkers at all levels. For the same reasons, absenteeism and high turnover rates have to be avoided. In a time when new technology is rapidly disseminated throughout the world, the way in which human resources are managed may be of the outmost importance to success. A major obstacle to the gathering of experience and knowledge from all relevant parties – e g production engineers, managers, the workforce and external experts – in a planning process is the lack of a common, efficient language. Mistakes made when designing new working environments are often very costly to adjust once the plans are realized. The prize of a poorly-planned environment is high in economical terms, but also in terms of human suffering. This may be especially important for disabled persons. Some basic ideas behind the computer-aided planning methodology currently being developed at the Lund Institute of Technology, and at Lund University, are the following ones: -In a planning process, it is important to draw on the creativity, experience, knowledge and enthusiasm of as many persons as possible. It is particularly essential that the group which is going to manage and apply the planned system finds it acceptable, as this group’s willingness and competence to improve the solution during and after implementation is often crucial. -Time is a resource in short supply, and a planning group including persons with very dissimilar backgrounds in terms of experience and knowledge could be too time-consuming. -Pictures of planned systems may help a heterogeneous group to obtain a common language; they may also provide the members of the group with good mental models as a basis for an efficient dialogue. In this workshop paper we will briefly discuss the computer-aided planning tool and present some of our experiences of its application to the planning of new production lines in mechanical industries and of working environments for the disabled.
  • Alem, Yonas, et al. (författare)
  • The persistence of subjective poverty in urban Ethiopia
  • 2014
  • Ingår i: World Development. - 0305-750X .- 1873-5991. ; 56:1, s. 51-61
  • Tidskriftsartikel (refereegranskat)abstract
    • Using data spanning 15 years, we study subjective and consumption poverty in urban Ethiopia. Despite rapid economic growth and declining consumption poverty, subjective poverty remains largely unchanged. We find that households with a history of poverty continue to perceive themselves as poor even if their material consumption improves. The relative economic position of households is a strong determinant of subjective poverty. Having some type of employment makes households less likely to perceive themselves as poor, even if they remain in objective poverty. We argue that any analysis to measure the impact of growth on welfare should also encompass subjective measures.
  • Analysis for Science, Engineering and Beyond : The Tribute Workshop in Honour of Gunnar Sparr held in Lund, May 8-9, 2008
  • 2012
  • Samlingsverk (redaktörskap) (övrigt vetenskapligt)abstract
    • This book project was initiated at The Tribute Workshop in Honour of Gunnar Sparr and the follow-up workshop Inequalities, Interpolation, Non-commutative Analysis, Non-commutative Geometry and Applications, held at the Centre for Mathematical Sciences, Lund University in May and November of 2008. The resulting book is dedicated in celebration of Gunnar Sparr's sixty-fifth anniversary and more than forty years of exceptional service to mathematics and its applications in engineering and technology, mathematics and engineering education, as well as interdisciplinary, industrial and international cooperation. This book presents new advances in several areas of mathematics and engineering mathematics including applications in modern technology, engineering and life sciences. Thirteen high-quality chapters put forward many new methods and results, reviews of up to date research and open directions and problems for future research. A special chapter by Gunnar Sparr and Georg Lindgren contains a historical account and important aspects of engineering mathematics research and education, and the implementation of the highly successful education programme in Engineering Mathematics at Lund Institute of Technology, where not only the mathematical sciences have played a role. This book will serve as a source of inspiration for a broad spectrum of researchers and research students.
  • Andéhn, Mikael, et al. (författare)
  • User-generated place brand equity on Twitter : The dynamics of brand associations in social media
  • 2014
  • Ingår i: Place Branding and Public Diplomacy. - Palgrave Macmillan. - 1751-8040. ; 10:2, s. 132-144
  • Tidskriftsartikel (refereegranskat)abstract
    • Social media provides a unique opportunity for brand analysis. The mere fact that users create content and messages through social media platforms makes the detailed monitoring of temporal variation in brand images possible. This research analyzes data collected from a specific social media platform, Twitter, about the city of Stockholm over a 3-month period to analyze how social media could be conceptualized as a new venue for place brand meaning formation, and to see how user-generated content pertains to the issue of place brand equity. Using semantic and content analyses, assemblages of place brand-related themes are explored. Subsequently, these assemblages of themes are deconstructed at a conceptual level and then subjected to frequency analysis, revealing an underlying typology based on characteristics of the temporal variation of the various types of brand elements. These results are explored on the basis of both how they apply to the understanding of content on social media in general and how they apply to the online presence, or digital footprint, of place brands.
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