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| 2. |
- Babic, N.C., et al.
(author)
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InPro training environment and model based working in construction
- 2009
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In: Improving Construction and Use through Integrated Design Solutions. - Espoo : Valtion teknillinen tutkimuskeskus. Tie- ja liikennelaboratorio. - 9789513863418 ; , s. 72-86
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Conference paper (peer-reviewed)abstract
- InPro project is European initiative which is developing a model based and collaborative way of working in early design phase in construction. To support project goals and facilitate the industrial transformation and industrial technology take-up, the project implemented tools and developed curricula and materials for training and education of management, architects, engineers, and construction workers, as well as university students. The paper presents training environment architecture with BIM laboratory that was developed to support training on model based work practices and enhancement of hands-on skills. Development process, technical solutions and experiences are described. Content of training courses and curricula is based on experiences from live project demonstrations and use cases. The paper presents one of the answers that address the problem of insufficient skills in construction industry that prevent adoption of novel methods of working and technology.
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| 3. |
- Bennitz, Anders, et al.
(author)
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Dynamic behaviour of the Vindel River railway bridge
- 2006
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In: Condition Monitoring and Diagnostic Engineering Management. - Luleå : Luleå tekniska universitet. - 9789163188060 ; , s. 721-729
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Conference paper (peer-reviewed)abstract
- The Swedish Railway administration has launched several projects aimed at increasing the accessibility of the railway lines in northern Sweden to meet future demands. One of these lines connects the southern and northern parts of Sweden and constitutes one of the major arteries for the transportation of heavy goods. Major investment are planned to upgrade the load bearing capacity of this railway line. The work is mainly focused on the larger structures and their dynamical properties. These properties can be used to assess existing infrastructure and to evaluate the performance. Advantages are obvious since the existing structural integrity form the base for investments in structural repair and upgrade of bridges. The Vindel River Railway Bridge situated 55 kilometers northwest of Umeå came into focus when large motion was discovered during train passages. The behaviour of the bridge crossing the river of Vindeln has been measured two times. Measurements of displacements and acceleration of the bridge during train passages has been conducted, the first measurements was done to give more experience on the motion of the bridge and to try out new sensors. The second measurement gave more information about the bridge's motion, results that could be used to calibrate a 3D FE-Model of the bridge used in the study. Based on the measurements, eigenfrequencies in the range of 0 to 8 Hz could be detected, modal shapes up to the ninth order could be extracted, deflections and transverse displacements for different sets of train and different train speeds were also found. However, new measurements are planned for this summer and will hopefully reinforce the already attained result and give answers to some of the unresolved questions.
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| 5. |
- Chioza, Barry A., et al.
(author)
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Genome wide high density SNP-based linkage analysis of childhood absence epilepsy identifies a susceptibility locus on chromosome 3p23-p14
- 2009
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In: Epilepsy Research. - : Elsevier BV. - 0920-1211 .- 1872-6844. ; 87:2-3, s. 247-255
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Journal article (peer-reviewed)abstract
- Childhood absence epilepsy (CAE) is an idiopathic generalised epilepsy (IGE) characterised by typical absence seizures manifested by transitory loss of awareness with 2.5-4 Hz spike-wave complexes on ictal EEG. A genetic component to the aetiology is well recognised but the mechanism of inheritance and the genes involved are yet to be fully established. A genome wide single nucleotide polymorphism (SNP)-based high density linkage scan was carried out using 41 nuclear pedigrees with at least two affected members. Multipoint parametric and non-parametric linkage analyses were performed using MERLIN 1.1.1 and a susceptibility locus was identified on chromosome 3p23-p14 (Z(mean)=3.9, p<0.0001; HLOD=3.3, alpha=0.7). The linked region harbours the functional candidate genes TRAK1 and CACNA2D2. Fine-mapping using a tagSNP approach demonstrated disease association with variants in TRAK1.
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| 6. |
- Dannefjord, Per, 1964-
(author)
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Organisationspraktiker och målförändring : Exemplet svensk socialdemokrati
- 2009
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Doctoral thesis (other academic/artistic)abstract
- The thesis emanates from a comparison between three points of time in the history of the Swedish social democratic party (SAP); 1889, 1905 and 1933. The comparison is partly about the political and organizational situation of the party, and partly about the goals the party expressed. The problem that I study, based on this comparison, is the identified changes of the party’s hierarchy of goals.I argue that goal change should be viewed as a process, not as a decision. There is no simple rationality in goal formulations or in the relation between goals and practices where the practices are shaped by the goals.My case shows the importance of the opposite causal direction where the practices reshape the goals. The organization formulates goals and intermediate goals. These are connected to practices directed towards the intermediate goals. The more resources the organization attach to these practices, the more difficult it is to change them and the higher status in the organizational activity they will get. The primary goals can still be important as justification, but their role will be reduced to a ritual rhetoric without practical significance. They will have to be reinterpreted and reformulated in correspondence to the practices in order to regain a practical significance in the activity of the organization. Thereby we have a practical goal change, which shouldn’t be confused with at rhetoric goal change. The rhetoric of the organization can remain unchanged even though no practices are directed towards the rhetorically important goals.One implication of this is that goals cannot be understood by their formulations only. The importance and meaning of the formulations will change over time and should therefore be related to the context and the organization’s position in the organizational field. When we study an organization over time it will be hard to understand it adequately if we don’t relate the organizational changes to the context.
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| 7. |
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| 8. |
- Dehlin, Stefan, et al.
(author)
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An evaluation model for ICT investments in construction projects
- 2008
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In: Electronic journal of information technology in construction. - 1403-6835 .- 1400-6529. ; 13, s. 343-361
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Journal article (peer-reviewed)abstract
- Even though Information and Communication Technology (ICT) investments in construction projects generally represent minor commitments of project resources by comparison to the full project cost, the value or impact on the profitability of the project are generally not considered. Also, many of the investment decisions are poorly thought through or examined. Investments decision taken during the procurement phase often merely based on intuition and rough estimations of the future costs and risks. Also, many of the traditionally used appraisal approaches have been shown inadequate in anticipating the consequences of such an investment. As a result, the investment is too often assumed to be negative since the benefits are not proper evaluated, included and weighted against the costs and risks the investment is expected to generate. Poor decision-basis does not only affect the actual decision-making in a particular project but also, in the long run, the motivation to innovate and to introduce new ICT tools and working methods into the construction industry. In view of this, a new project-oriented evaluation model is developed for the purpose to provide for a structure and a work routine to be used by a multidisciplinary project team to evaluate the implications of realizing ICT investments in construction projects. Although primarily aimed at establishing future benefits and costs the model may very well be used for follow-ups. The models' application is illustrated using a case study of a construction project using 3D and VR for coordination and evaluation. The results based on interviews and rough estimates on the "safe side" show that benefit of the ICT investment for the case study project was much higher compared with the cost for the project. The shift in focus from costs/benefits for the individual stakeholders to costs/benefits for the project gives a momentum to optimize the use of a new ICT tools in construction. This will surely affect the processes and the contractual environment in the project, since it has to support sharing of information and achieved benefits and the costs of the investment in the project.
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| 10. |
- Enochsson, Ola, et al.
(author)
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Assessment and condition monitoring of a concrete railway bridge in Kiruna, Sweden
- 2006
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In: Bridge maintenance, safety, management, life-cycle performance and cost. - London : Taylor and Francis Group. - 0415403154
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Conference paper (peer-reviewed)abstract
- A two-span railway concrete trough bridge over Luossajokk in Kiruna in northern Sweden has been studied. The owner wanted to increase the axle loads from 250 to 300 kN in order to reduce freight costs for iron ore. Examples are given of methods used and results obtained from the assessment where bending, shear and fatigue were studied. Material properties, loads and load carrying capacity were evaluated using deterministic and probabilistic methods. It was shown that the bridge could carry the higher loads with a safety index β > 4.7 for reasonable assumptions of the load distributions. A measurement system was installed to check the actual level of critical strains and the worst positions of the train. Results are also given from a condition monitoring program 2001-2006, launched to periodically check the development of strains with time.
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