| 1. |
- Bouguerra, Abdelbaki, 1974-, et al.
(författare)
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An autonomous robotic system for load transportation
- 2009
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Ingår i: 2009 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2009). - New York : IEEE conference proceedings. - 9781424427277 - 9781424427284 ; , s. 1563-1566
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Konferensbidrag (refereegranskat)abstract
- This paper presents an overview of an autonomous robotic material handling system. The goal of the system is to extend the functionalities of traditional AGVs to operate in highly dynamic environments. Traditionally, the reliable functioning of AGVs relies on the availability of adequate infrastructure to support navigation. In the target environments of our system, such infrastructure is difficult to setup in an efficient way. Additionally, the location of objects to handle are unknown, which requires that the system be able to detect and track object positions at runtime. Another requirement of the system is to be able to generate trajectories dynamically, which is uncommon in industrial AGV systems.
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| 2. |
- Bouguerra, Abdelbaki, et al.
(författare)
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MALTA : a system of multiple autonomous trucks for load transportation
- 2009
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Ingår i: Proceedings of the 4th European conference on mobile robots (ECMR). - Zagreb : KoREMA. - 9789536037544 ; , s. 93-98
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Konferensbidrag (refereegranskat)abstract
- This paper presents an overview of an autonomousrobotic material handling system. The goal of the system is toextend the functionalities of traditional AGVs to operate in highlydynamic environments. Traditionally, the reliable functioning ofAGVs relies on the availability of adequate infrastructure tosupport navigation. In the target environments of our system,such infrastructure is difficult to setup in an efficient way.Additionally, the location of objects to handle are unknown,which requires that the system be able to detect and track objectpositions at runtime. Another requirement of the system is to beable to generate trajectories dynamically, which is uncommon inindustrial AGV systems.
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| 3. |
- Elgh-Dalgren, Kristin, et al.
(författare)
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Anaerobic bioremediation of a soil with mixed contaminants : Explosives degradation and influence on heavy metal distribution, monitored as changes in concentration and toxicity
- 2009
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Ingår i: Water, Air and Soil Pollution. - Dordrecht : Springer Netherlands. - 0049-6979 .- 1573-2932. ; 202:1-4, s. 301-313
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Tidskriftsartikel (refereegranskat)abstract
- Two soils with explosives and metals were evaluated for the degradation efficiency of explosives by native microorganisms under anaerobic conditions. The commercially available method Daramend®, amended with zero-valent iron (ZVI), was compared with a horse-manure amended compost and a treatment with ZVI alone. In a moderately contaminated soil, Daramend® and ZVI treatment gave significantly higher removal rates compared to compost and control treatments (Tukey’s test, P<0.05). The largest overall decrease in ecotoxicity, measured with bioluminescent bacteria (Vibrio fischeri), was achieved with ZVI-treatment. In a more contaminated soil no degradation of contaminants and no decline in soil toxicity could be distinguished after the same time period. Problems with establishment of anaerobic conditions during parts of the remediation process and low microbial activity due to acute toxicity of contaminants are plausible explanations. Redistribution that could potentially lead to mobilization of the co-contaminant Pb was not observed in either of the soils during the biological treatments.
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| 4. |
- Elgh-Dalgren, Kristin, 1980-, et al.
(författare)
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Laboratory and pilot scale soil washing of PAH and arsenic from a wood preservation site : Changes in concentration and toxicity
- 2009
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Ingår i: Journal of Hazardous Materials. - Amsterdam : Elsevier. - 0304-3894 .- 1873-3336. ; 172:2-3, s. 1033-1040
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Tidskriftsartikel (refereegranskat)abstract
- Soil washing of a soil with a mixture of both polycyclic aromatic hydrocarbons (PAH) and As was evaluated in laboratory and pilot scale, utilizing both single and mixtures of different additives. The highest level of decontamination was achieved with a combination of 0.213 M of the chelating agent MGDA and 3.2xCMC* of a nonionic, alkyl glucoside surfactant at pH 12 (Ca(OH)2). This combination managed to reach Swedish threshold values within 10 min of treatment when performed at elevated temperature (50°C), with initial contaminant concentrations of As = 105±4 mg/kg and US-EPA PAH16 = 46.0±2.3 mg/kg. The main mechanisms behind the removal were the pH-effect for As and a combination of SOM-ionization as a result of high pH and micellar solubilization for PAHs. Implementation of the laboratory results utilizing a pilot scale equipment did not improve the performance, which may be due to the shorter contact time between the washing solution and the particles, or changes in physical characteristics of the leaching solution due to the elevated pressure utilized. The ecotoxicological evaluation, Microtox®, demonstrated that all soil washing treatments increased the toxicity of soil leachates, possibly due to increased availability of contaminants and toxicity of soil washing solutions to the test organism.
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| 5. |
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Historier : arton- och nittonhundratalens skönlitteratur som historisk källa
- 2009
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- I denna antologi diskuteras hur skönlitteratur kan användas som källa till historiskt inriktade studier. Upprinnelsen är en konferens som hölls hösten 2008 i Göteborg, då företrädare för disciplinerna historia, idéhistoria, ekonomisk historia och litteraturvetenskap presenterade sin forskning. De många bidragen ger en översiktlig bild av forskningen kring litteratur som historisk källa bland svenska forskare.
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| 6. |
- Johansson, Ingrid, et al.
(författare)
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Theoretical model of coping among relatives of patients in intensive care units : a simultaneous concept analysis.
- 2006
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Ingår i: Journal of Advanced Nursing. - Oxford : Blackwell. - 0309-2402 .- 1365-2648. ; 56:5, s. 463-471
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Tidskriftsartikel (refereegranskat)abstract
- This paper reports the development of a theoretical model of relatives' coping approaches during the patient's intensive care unit stay and subsequent recovery at home by performing an analysis of concepts generated from two empirically grounded, theoretical studies in this area. BACKGROUND: When supporting relatives of intensive care unit patients, it is important that nurses have access to evidence-based knowledge of relatives' coping approaches during the period of illness and recovery. METHOD: Simultaneous concept analysis was used to refine and combine multiple coping concepts into a theoretical model of coping. The concepts were generated in two previous empirical studies of relatives' coping approaches during mechanically ventilated patients' intensive care unit stays and recovery at home. FINDINGS: The theoretical model was developed in 2004-2005 and illustrates the effectiveness of different coping approaches in relation to each other and to social support. Definitions summarizing each coping approach and containing the knowledge gained through the simultaneous concept analysis method were also formulated. CONCLUSION: This middle-range theory of relatives' coping approaches may make a valuable contribution to international intensive care unit nursing practice, especially as it is based on empirical studies and may therefore serve as a basis for the development of future clinical guidelines. However, the theoretical model needs to be empirically validated before it can be used.
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| 7. |
- Karpowicz, Ewa, et al.
(författare)
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Self-esteem in patients treated for anorexia nervosa.
- 2009
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Ingår i: International journal of mental health nursing. - Richmond : Wiley. - 1447-0349 .- 1445-8330. ; 18:5, s. 318-25
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Tidskriftsartikel (refereegranskat)abstract
- Anorexia nervosa (AN) mainly affects girls or women between 13 and 45 years of age. According to previous studies, one of the reasons for the desire to be thin is low self-esteem. The purpose of the study was to examine the self-esteem of 38 female patients with AN between 16 and 25 years of age, before and after 3 months of treatment at a specialist ward for eating disorders in Göteborg, Sweden. A quantitative pre- and post-assessment based on two self-rating questionnaires, the Rosenberg Self-Esteem Scale (RSE-S) and three subscales (weight phobia, body dissatisfaction, and ineffectiveness) of Eating Disorder Inventory-2 (EDI-2), together with body mass index (BMI), were used in the study, which was conducted between June 2005 and March 2008. The results reveal that self-esteem, BMI, weight phobia, and body dissatisfaction improved significantly between pre- and post-treatment. The RSE-S and EDI-2 ineffectiveness correlate highly with one another, which lends support to convergent validity, and the internal consistency was high for both the RSE-S and EDI-2 ineffectiveness. The results indicate that the treatment was effective, as both patients' self-esteem and BMI increased after completed treatment, which was the primary goal of the treatment at this ward. Future studies should focus on follow up and the way self-esteem manifests itself at different points in time within an individual.
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| 8. |
- Källstrand-Ericson, Jeanette, et al.
(författare)
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Visual impairment and falls : a register study
- 2009
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Ingår i: Journal of Clinical Nursing. - Oxford : Blackwell Publishing. - 0962-1067 .- 1365-2702. ; 18:3, s. 366-372
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Tidskriftsartikel (refereegranskat)abstract
- Aim: The aim of this register study was to investigate falls and fall injuries of inpatients 65 years and over to determine whether a causal factor of visual impairment was documented.Background: All Organisation for Economic Cooperation and Development (OECD) countries have an increasing older population with falls and fall injuries becoming a major problem. A visual impairment can be an independent risk factor for falls but can also occur in combination with other intrinsic and extrinsic risk factors.Design: A retrospective non-randomised register study.Methods: In 2004, all documented falls of inpatients aged 65 years and over were examined. Medical records and eye clinic records were scrutinised to identify whether any visual impairment have been documented.Conclusion: The majority of falls occurred between the hours of 24:00-06:00 and the inpatients most often affected were those with a visual impairment. The falls occurred in connection with movement when the inpatient was unaccompanied. Documentation in records at the medical clinic was defective and subjectively perceived visual impairment was not documented at all. Both subjective and objective visual impairment occurred in all eye clinic records. Relevance to clinical practice.Visual impairment along with the ageing process are features affecting falls and the hospital environment needs to be adapted by improving the use of strong, contrasting colours and providing good lighting for older inpatients with visual impairment during the night time period. Hospital safety for older people with visual impairment is a concern if falls are to be reduced. Healthcare professionals need to undertake individual risk assessments to establish the degree of visual impairment of the older person so that appropriate interventions can be implemented to reduce the incidence of falls and fall injuries.
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| 9. |
- Larsson, Bengt, 1943-, et al.
(författare)
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Component manufacturers’ perceptions of managing innovation
- 2006
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Ingår i: Building Research & Information. - London : Informa UK Limited. - 0961-3218 .- 1466-4321. ; 34:6, s. 552-564
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this research is to understand component manufacturers' perception of their role in the innovation process. The role of the component manufacturer is different to other construction sector actors because they are product- not project-orientated. Base information was taken from part of a large benchmarking study conducted in Sweden. This helped to identify a small number of established component manufacturers located in a large geographical area of Sweden suitable for further investigation. Information about ten manufacturers was collected and interviews were conducted with their managing directors. The interviews revealed considerable variation in the manufacturers' perception of their position in the innovation process, their approach to new product development and interaction with their customers. Manufacturers were then graded according to their benchmarking and innovation procedures, which helped to illustrate a link between communication and information-sharing practices, benchmarking and innovation. The main findings are that the more innovative companies use information and benchmarking activities to their benefit. The more innovative companies have established a balance between innovations in process and product, have a clear direction from their managing director, and engage in regular communication with their customers.
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| 10. |
- Lidström, Kristoffer, et al.
(författare)
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Cooperative Communication Disturbance Detection in Vehicle Safety Systems
- 2007
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Ingår i: IEEE Intelligent Transportation Systems Conference, 2007. ITSC 2007. - Piscataway, N.J. : IEEE Press. - 9781424413966 ; , s. 522-527
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Konferensbidrag (refereegranskat)abstract
- Proactive vehicle safety systems based on vehicle-to-vehicle and infrastructure-to-vehicle communication are promising new approaches to reducing the number of accidents on our roads. In-vehicle applications are envisaged to provide a variety of services to the driver including warning about potential collisions and other hazardous situations. For the safe operation of these applications it is important not only to efficiently model the environment but also to reason about, and predict, how reliable such a model is under various circumstances. In this paper we propose an approach to estimating the reliability and availability of the wireless medium at hazardous locations by cooperatively detecting communication disturbances in order to allow for more accurate decisions by in-vehicle applications.
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