| 1. |
- Björklund, Karin, 1979, et al.
(författare)
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Best Management Practices to Reduce Phthalate and Nonylphenol Loads in Urban Runoff
- 2008
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Ingår i: Proceedings of the International Conference on Urban Drainage, 1-5 September, Edinburgh, UK.
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Konferensbidrag (refereegranskat)abstract
- Phthalates and nonylphenols, organic substances of widespread use, are believed to be ubiquitous in Swedish stormwater and urban sediments. Due to their reported hazardous properties, it is of great interest to identify effective best management practices (BMPs) to reduce the release of these substances to recipient waters. The stormwater-quality model SEWSYS was used to identify sources and quantify loads of phthalates and nonylphenols in two urban catchment areas. Based on the modelling results, BMPs were proposed, and their efficiencies evaluated. The SEWSYS simulations showed that discharges of phthalates and nonylphenols depend on catchment area characteristics: pollutants in a residential area originate mainly from building materials, whereas vehicles are the dominant source in a high-density traffic area. By replacing traditional building materials by phthalate and nonylphenol-free alternatives and by implementing congestion taxes to reduce traffic, the simulated pollutant loads could be reduced by more than 20% in the high-density traffic area. However, discharges from many diffuse sources cannot entirely be stopped, and a structural BMP, e.g. a sedimentation pond, is essential to further decrease pollutant loads in urban runoff. This study shows that SEWSYS can be a useful tool for selecting and evaluating adequate BMPs to reduce stormwater contamination.
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| 2. |
- Björklund, Karin, 1979, et al.
(författare)
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Screening of organic contaminants in urban snow
- 2010
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Ingår i: Proceedings, 14th International Conference, IWA Diffuse Pollution Specialist Group: Diffuse Pollution and Eutrophication. ; , s. 270-275
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Konferensbidrag (refereegranskat)abstract
- Snowmelt is known to cause peak concentrations of pollutants which may adversely affect receiving water quality. High concentrations in snow have been shown for e.g. metals and suspended solids, whereas studies on organic pollutants are rarely reported. This study aimsat investigating the occurrence of anthropogenic organic compounds in urban snow, and at identifying sources of the pollutants. Snow from sites in Gothenburg, Sweden, was sampled and a range of organic substances was analysed. The most frequently detected organic pollutants in urban snow were polycyclic aromatic hydrocarbons, high molecular-weightphthalates, 4-nonylphenol and 4-octylphenol. Brominated flame retardants and chlorinated paraffins were only sporadically detected. In several snow samples, the concentrations of specific PAHs, alkylphenols and phthalates were higher than reported stormwater concentrations and European water quality standards. Pollutant source identification and sustainable management of snow are important instruments for the mitigation of organic contaminants in the urban environment.
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| 3. |
- Björklund, Karin, 1979, et al.
(författare)
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Using the stormwater-quality model SEWSYS to identify sources and fluxes of hazardous organic substances
- 2008
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Ingår i: Book of abstracts. 9th Highway and Urban Environment Symposium, 9-11 June 2008, Madrid, Spain. ; , s. 21-
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Konferensbidrag (refereegranskat)abstract
- Stormwater-quality models simulating pollutant pathways in urban catchments are proven to be valuable means when planning and evaluating appropriate strategies to reduce the detrimental impacts of urban runoff [Zoppou, 2001]. SEWSYS, a substance flow model simulating pollutant concentrations in stormwater, is an effective instrument for predicting pollution loads from non-point sources and can therefore be used for proposing measures to reduce the release of contaminants into the environment [Ahlman, 2006]. SEWSYS is now being expanded from operating with nutrients and metals, to include also a few organic substances. In this study, two groups of organic compounds – phthalates and nonylphenols (NPs) – were selected for an initial flow analysis. These compounds, classified as “very toxic to aquatic organisms” [KEMI, 2007a], are high volume chemicals used as additives in a variety of products [KEMI, 2007b]. To incorporate phthalates and NPs into SEWSYS, an extensive literature study was accomplished. The study included identification of potential pollutant sources in urban areas, e.g. building materials and vehicles, and analysis of emission patterns and rates. Also, model input data such as source distribution and authentic rain series were collected from three urban catchment areas. Simulated pollutant concentrations were then compared with measured and analysed concentrations in stormwater from the investigated catchments. Preliminary model simulations showed that pollutant loadings and major contributing sources are catchment dependent: e.g. vehicles are the dominant sources of phthalates in traffic areas whereas construction materials are the most important sources in residential areas. These simulation results were then used for proposing adequate measures in order to mitigate phthalate and NP loads in stormwater. Calculations showed that by using phthalate- or NP-free construction materials, and by reducing the traffic load, the pollution load from residential and traffic areas was considerably decreased. These findings illustrate the use of SEWSYS as a tool for improving urban runoff quality, and corresponding simulations could easily be performed by local authorities for planning of effective abatement strategies. ReferencesAhlman S (2006) Modelling of Substance Flows in Urban Drainage Systems. Doctoral Thesis, Department of Civil and Environmental Engineering, Chalmers University of Technology, Göteborg, Sweden.KEMI (Swedish Chemicals Agency). (2007a) Classification List. http://apps.kemi.se/klassificeringslistan/default.cfmKEMI (Swedish Chemicals Agency). (2007b) KemI-Stat. http://apps.kemi.se/kemistat/start.aspx?sprak=eZoppou C (2001) Review of urban storm water models. Environmental Modelling & Software 16 (3), 195-231.
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| 4. |
- Högfeldt, Anna-Karin, et al.
(författare)
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Program leadership from a nordic perspective : Program leaders' power to influence their program
- 2013
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Ingår i: Proceedings of the 9th International CDIO Conference.
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Konferensbidrag (refereegranskat)abstract
- In this paper a continuation research at five technical universities in Nordic countries (N5T network) in 2012 is presented, wheretheaim was to find out how the program leadersconceived their function, role and mandate, and the work situations between the universitieswere compared. The previous research demonstrated that programleadershave quite different positions, strategies and methods when it comes to monitoring and developing their programs.In this paper, a deeper investigationis carried out ofthe (im-) possibilitiesto make realinfluence on the study courses that constitutesthe respective Engineering study programs. Eightprogram leaders from thefiveN5Tuniversities have been interviewed, and theanalysis of these studies, has culminatedina model for the analysis of program leadership for Engineering educationdevelopment.
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| 5. |
- Högfeldt, Anna-Karin, et al.
(författare)
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Program Leadership from a Nordic Perspective
- 2012
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Ingår i: Proceedings of the 8th International CDIO Conference, Queensland University of Technology, Brisbane..
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Konferensbidrag (refereegranskat)
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| 6. |
- Högfeldt, Anna-Karin, et al.
(författare)
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Program leadership from a Nordic perspective - Managing education development
- 2012
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Ingår i: Proceedings of 8th International CDIO Conference, Brisbane, Australia.
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Konferensbidrag (refereegranskat)abstract
- Nordic Five Tech (N5T) is a strategic alliance between five technical universities in Denmark, Finland, Norway and Sweden. The overall aim is to “utilize shared and complementary strengths and create synergy within education, research and innovation”. In this paper we focus on university educational development issues by investigating the program leadership at five Nordic technical universities. Specifically, the paper compares definitions, views and experiences of education leadership in the Nordic Five Tech (N5T) universities. The paper does this by, first, reviewing the definitions of roles and responsibilities for program directors at each university, and second, by presenting results from a survey carried out in March 2012 among program directors at the N5T universities. Based on this data, we analyze how program directors experience their role, their possibilities to lead, and their opportunities of learning to lead. How is time for reflection and development as leaders handled at the different universities? The paper goes on to consider what impact the mandate of the leadership role has on the possibilities for developing educational programs. For instance, how can program directors ensure that learning objectives concerning generic skills and abilities are reached? How can program directors drive implementation of integrative and value-oriented topics such as sustainable development, innovation and entrepreneurship?
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| 7. |
- Högfeldt, Anna-Karin, et al.
(författare)
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Program leadership from a Nordic perspective - Program leaders' power to influence their program
- 2013
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Ingår i: Proceedings of the 9th International CDIO Conference, Cambridge, USA.
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Konferensbidrag (refereegranskat)abstract
- In this paper a continuation research at five technical universities in Nordic countries (N5T network) in 2012 is presented, where the aim was to find out how the program leaders conceived their function, role and mandate, and the work situations between the universities were compared. The previous research demonstrated that program leaders have quite different positions, strategies and methods when it comes to monitoring and developing their programs. In this paper, a deeper investigation is carried out of the (im-) possibilities to make real influence on the study courses that constitutes the respective Engineering study programs. Eight program leaders from the five N5T universities have been interviewed, and the analysis of these studies, has culminated in a model for the analysis of program leadership for Engineering education development.
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| 8. |
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| 9. |
- Munkebo Hussman, Peter, et al.
(författare)
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Peer Evaluation of Master Program - Closing the Quality Circle of CDIO Programs?
- 2011
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Ingår i: Proceedings of 7th International CDIO Conference, Copenhagen, Denmark.
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Konferensbidrag (refereegranskat)abstract
- This paper describes a quality assurance project, which is conducted within the framework of the Nordic Five Tech Alliance (N5T), a strategic alliance of the five leading technical universities in Denmark, Finland, Norway and Sweden. The project is concerned with the development of a common quality enhancement tool. The tool is designed for conducting peer evaluations of educational programs enabling further development of the study programs involved, and thereby it is contributing to closing the quality circle embedded in the CDIO approach. In addition, the project aims to contribute to the consolidation of the N5T alliance by facilitating contacts between faculty members and providing them with an in-depth knowledge of the study programs within their field at another N5T institution. The paper describes the quality enhancement tool in detail, and how it was applied to evaluate master programs. It also discusses its contribution to the development of the programs. Furthermore it shows how international peer evaluation can contribute to closing the quality circle embedded in the CDIO approach, and assesses the value of the approach to contribute to the creation of long-term relationships in educational networks.
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| 10. |
- Rosén, Anders, Dr, et al.
(författare)
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Mapping the CDIO Syllabus to the UNESO Key Competences for Sustainability
- 2019
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Ingår i: Proceedings of the International CDIO Conference. - 2002-1593. ; , s. 67-84
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Konferensbidrag (refereegranskat)abstract
- In this paper a framework of key competencies for sustainability defined by UNESCO is used to evaluate the relevance of the CDIO Syllabus for promoting engineering education for sustainable development. The evaluation is performed in two steps. First, topics, terms and concepts in the CDIO Syllabus that corresponds to the different UNESCO key competencies are identified. The second step is a qualitative discussion where areas of strong mapping are highlighted and aspects that could be better visualized or strengthened in, or added to, the Syllabus are identified. Differences in definitions of various concepts between the CDIO Syllabus and the UNESCO key competencies and the overall relation between the two frameworks are discussed. It is concluded that the CDIO Syllabus is rather well aligned with the UNESCO framework, however several opportunities (not to say needs) for strengthening the Syllabus in relation to the key competencies are identified. The UNESCO key competencies are found to be useful instruments for scrutinizing and updating the CDIO Syllabus. Other opportunities for knowledge and methods transfer between the Education for Sustainable Development (ESD) domain and the Engineering Education domain are identified. The paper is proposed to be used as basis for updating the CDIO Syllabus into a version 3.0 for maintaining its relevance in a changing world.
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