Papers by Roland Örtengren
PubMed, 1974
Search by Subject Search using Medical Subject Headings (< b> MeSH</b>), a controlled... more Search by Subject Search using Medical Subject Headings (< b> MeSH</b>), a controlled vocabulary for indexing life sciences content.< br/> Note that some records do not have MeSH. These include Patents and the latest PubMed and PubMed Central records.
International Journal of Industrial Ergonomics, 2014
SAE technical paper series, Jun 26, 2001
In this case study, a human factors engineering (HFE) analysis was carried out in the preliminary... more In this case study, a human factors engineering (HFE) analysis was carried out in the preliminary design phase of the Cupola. Cupola is a European Space Agency (ESA) module for manned space flights for the International Space Station (ISS) as part of a Barter Arrangement between ESA and the United States National Aeronautics and Space Administration (NASA). Manikin software was used early in the design process before the production of any flight hardware. The manikin analysis was supported by the use of hierarchical task analysis, a file exchange protocol and a relational database. This paper describes methodological aspects of the use of the supporting methods. Results show that hierarchical task analysis, a file exchange protocol and a relational database are prerequisites for successful extensive manikin analysis.
There is accumulating evidence that intracranial pressure (ICP) registration is of definite value... more There is accumulating evidence that intracranial pressure (ICP) registration is of definite value in routine clinical work for diagnosis, patient monitoring, treatment, and prognosis. However, the success of an ICP registration system depends on whether it fulfills a number of basic requirements and on its handiness in the acute clinical situation.
Applied Ergonomics, Jun 1, 1984
The influence of a preventive educational back care programme on the movement patterns of the spi... more The influence of a preventive educational back care programme on the movement patterns of the spine during work was assessed objectively and subjectively in six janitors. Trunk flexion was measured in the subjects using a flexion analyser before they attended a preventive educational back care programme and twice afterwards. The results show that the subjects increased the amount of time spent in an upright position by about a third after the educational programme and maintained this change two and a half to three months later. They also decreased the time spent in moderate and deep forward flexion (37-72 degrees ) by about half and also maintained this decrease at three months. These changes are consistent with a decrease of the mechanical load on the spine. The study emphasises that it is possible to alter movement patterns of the spine, and thereby decrease the load during janitorial work, by a suitably designed educational programme.
Occupational ergonomics, Nov 2, 2005
Industrial production of food is a branch of industry suffering from many occupational accidents.... more Industrial production of food is a branch of industry suffering from many occupational accidents. This paper aims at identifying risks and safety measures in three production systems within this industrial sector. A qualitative exploratory case study with three embedded sub cases was performed. Methods for safety analysis were utilized for data collection and analysis. Risks were mostly handled by reactive technical solutions such as physical barriers and organization of working methods, separation in time and preventive maintenance. Still, relying on human conduct was customary. It was found that there was a lack of overview of the system which gave rise to safety problems. Furthermore, the focus was on product and not production, meaning that production development is handled on operational level, leading to ad-hoc solutions. Safety of machines and automated systems are still not satisfactory when it comes to tasks outside the planned work such as production disturbance handling and cleaning. Documentation, education and information are not used as much as one could expect to improve safety. The results are compiled in a table showing sources of accident risk, exposure control and control of human conduct.
Lecture notes in networks and systems, 2023
Loose-loading of trailers and other carriers in the distribution of parcels is discussed and also... more Loose-loading of trailers and other carriers in the distribution of parcels is discussed and also implemented by distributors in several countries for the purpose of increasing the utilisation of space. Loose-loading is monotonous and the risk of overload disorders among workers performing this type of work is high. This paper reports the results from an experimental study aiming at determining the workload and the accept¬able working pace when loose-loading parcels weighing up to 35 kg onto a trailer. The workload was assessed by measuring heart rate and by subjective rating of perceived exertion using the Borg scale. A biomechanical analysis of the postural load during lifting was also performed.
Search: onr:"swepub:oai:services.scigloo.org:62765" > Inland waterway tra... ... Inl... more Search: onr:"swepub:oai:services.scigloo.org:62765" > Inland waterway tra... ... Inland waterway transportation and handling of hazardous materials - Identification of incident scenarios and estimation of distances of effect. ... Shahriari, Mohammad, 1945-(author) Chalmers ...
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International Journal of Human Factors Modelling and Simulation, 2014
Modelling and simulation of human motions are of great interest for a number of industrial applic... more Modelling and simulation of human motions are of great interest for a number of industrial applications such as ergonomics and production planning. Over time, efforts have been made to provide computerized human models with biomechanically accurate underlying skeleton and realistically rendered volumetric representation of muscles, skin, clothes, etc. known as computer manikins. Despite considerable progress in computational methods for human motion generation in these models, there are still major challenges to generate natural looking motions for daily routine tasks for example in manual assembly lines. This research work proposes a software platform, related methods, and data structures to support use of real motion data for simulating and analysing routine work tasks. One contribution of this thesis is to find ways to deploy motion data in a uniform and efficient manner. The outcomes are a data schema, standards for data conversions, and procedures to aggregate motion data in a unified database. Another part of this thesis is dedicated to 'generating new motions by re-using stored data'. This is done by a synthesizer platform consisting of modules which are able to decompose tasks into primary motions, to search and retrieve motion pieces from the motion database, and to compose a new motion based on the required specifications. In addition, this thesis, presents a method to analyse the generated motions using time-varied motion data. Results of this work contribute in extending current tool functionalities by simulating complicate routine motions which, if not impossible, are very hard to simulate using today's computational algorithms. This work also improves the use of time-varied direct measurement analysis tools against traditional static observational methods.
This chapter will only briefly describe the most commonly used evaluation tools for physical work... more This chapter will only briefly describe the most commonly used evaluation tools for physical work loads, body postures, reach abilities and fields of vision integrated in different Digital Human Modelling Software (DHMS). We try to do so in a way that is neither too specific to any particular DHMS nor so generic that all evaluation tools, more or less integrated in DHMS, are covered. The continuation of this chapter is structured according to the different tool sets that are available in the most commercial DHMS. We have chosen to divide the tool sets into three groups: 1) Quantitative evaluation tools, 2) Semi-quantitative tools and 3) Tools for discomfort, anthropometry, human performance and cognition. The main focus of this chapter is addressed to group one (quantitative evaluation tools), whereas group two and three are less extensive.
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Papers by Roland Örtengren