| 1. |
- Allard, Ingrid, 1986-, et al.
(författare)
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Energy evaluation methods for residential buildings in Nordic countries
- 2012
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Ingår i: Proceeding of the Technoport Conference. - : Elsevier.
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Konferensbidrag (refereegranskat)abstract
- To meet the goals of the directive 2010/31/EU on the energy performance of buildings, the building sector in Europe now faces a transition towards more energy efficient buildings. Research and development of new energy solutions and technology will be necessary for the transition and the importance of measuring and evaluating building energy performance increases. This paper attempts to review and evaluate different methods that are commonly used to analyze energy performance in residential buildings in Nordic countries, primarily in Sweden, Norway and Finland. A short international review of regulations is also included. Some advantages and disadvantages of each method are discussed, as well as commonly used methods in the three countries. Although the three Nordic countries have similar climate conditions and building traditions, the study shows that there exist relatively large variations in defining parameters related to energy performance in residential buildings, such as energy use, heated area, and climate zones. The outcome of the regulations could be investigated by adapting the codes on a selected set of buildings. Common analyzing methods, or parts of methods, are found to be used in several countries. These aspects may be considered in further work to develop more accurate and easily comparable methods to evaluate energy performance for residential buildings in cold climate.
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| 2. |
- Grundberg, Staffan, 1961-, et al.
(författare)
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Dynamics of axially loaded and partially Interacting composite beams
- 2012
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Ingår i: ECCM15. - : ECCM15. - 9788888785332
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Konferensbidrag (refereegranskat)abstract
- The aim of this paper is to study the dynamics of partially interacting composite beams subjectedto axial loads, a situation occurring in e.g. beam-columns. The eigenfrequencies arederived for the simply supported composite beam subjected to an axial force. Measurements ofthe fundamental frequencies of a simply supported composite beam consisting of three layersare carried out considering different values of the applied axial force. The agreement betweenthe theoretical and experimental results is discussed. It is also shown that the application ofthe axial force introduces frictional moments at the boundaries, which make the experimentalboundary conditions deviate somewhat from those of an ideal simply supported beam.
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| 3. |
- Hassan, Osama, 1969-
(författare)
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A Simplified Procedure to Determine the Deflection of Statically Indeterminate Structures
- 2014
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Ingår i: International Journal of Aerospace and Lightweight Structures. - Singapore : Research publishing. - 2010-4286 .- 2010-4294. ; 4:4, s. 241-253
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Tidskriftsartikel (refereegranskat)abstract
- In the study presented here, the problem of calculating deflection of stati-cally indeterminate continuous beams and structural frames is addressed. Theelastic line equation, taught in many standard courses in structural mechan-ics is used to determine the structure deflections.In the investigated method,the structure is divided into a simply supported members in which the elas-tic line equation is applied to calculate the deflection shape of the structure.The results are compared with the finite element method (FEM) and goodagreement is obtained. Moreover, the advantage of this method is that it issimplified, general, not time-consuming, and it can be standardised to thistype of structures.
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| 4. |
- Hassan, Osama, 1969-, et al.
(författare)
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Assessment of human-induced vibrations in composite timbre floors
- 2012
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Ingår i: Proceedings of the 15th European Conference on Composite Materials. - Italien. - 9788888785332
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Konferensbidrag (refereegranskat)abstract
- The authors investigate the human induced vibrations in typical composite timber floors inresidential buildings. Assessment methods given in different design codes and guidelines,such as the Eurocode, are discussed. A case study analysis based on the differentmethodologies is carried out to assess the acceptability of a specific timber floor. Twoextreme cases are considered: full and non-composite action. It is shown that compositeaction improves the floor acceptability for general residential applications. The limitations ofthe different criteria given in the codes and guidelines for assessing floor vibrations in timberfloor structures are discussed and, also, the possible improvement of these criteria.
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| 5. |
- Hassan, Osama, 1969-, et al.
(författare)
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Dynamics of partially interacting composite beams
- 2012
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Ingår i: Proceedings of the 15th European Conference on Composite Materials. - 9788888785332
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Konferensbidrag (refereegranskat)abstract
- In this work, a combined variational calculus and experimental approach are used to characterize the structural vibration behaviour of layered composite beams. Experimental dynamic tests are carried out on a composite simply supported beam with varied interaction strength between the layers. From the results, the influence of connections on the flexural natural frequencies, flexural deformation and damping is investigated. A good agreement between the derived theoretical equations and experimental results is obtained.
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| 6. |
- Hassan, Osama, 1969-, et al.
(författare)
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Experimental Analysis of Composite Timbre-Concrete Wall Element
- 2012
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Ingår i: Proceedings of the 15th European conference on composite materials. - Venice. - 9788888785332
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Konferensbidrag (refereegranskat)abstract
- The authors present an experimental and theoretical study on a composite or hybrid element used in residential and agricultural buildings. The composite wall element consists of timber studs connected to a concrete plate by means of nail plate shear connectors. Experimental results are presented and compared with an analytical model for partial composite action. A good agreement is obtained between the analytical and experimental results. Also, some suggestions to improve the design of the composite element are discussed.
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| 7. |
- Hassan, Osama, 1969-, et al.
(författare)
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Lecablock, an Alternative Construction Material for the Exterior Walls of Passive House
- 2014
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Ingår i: Journal of Building Construction and Planning Research. - : Scientific Research Publishing. - 2328-4889 .- 2328-4897. ; 2:2, s. 96-108
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Tidskriftsartikel (refereegranskat)abstract
- In this paper it is attempted to investigate the Leca blocks as sustainable construction material forthe exterior walls of passive house. The building physical properties of Leca design wall structureare studied along with the environmental impact and load-bearing capacity. To compare the results,a similar analysis is carried out considering the traditional wooden wall construction of passivehouses. The results showed that Leca design wall structure can be an alternative sustainablesolution to the traditional wooden wall structure of passive house, mainly due to its low U-value,its ability to handle moisture, and comparable structural load-bearing capacity. However, thewooden wall structure is more environmentally friendly than the Leca blocks due to its loweremissions to the environment and reduced energy use, especially during the manufacturing process.
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| 8. |
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| 9. |
- Hassan, Osama, 1969-, et al.
(författare)
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Peer-lärande och formativ bedömning : en väg till bättre lärande
- 2013
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Ingår i: Reformation, revolution, evolution. - Umeå : Universitetspedagogiskt centrum (UPC), Umeå universitet. - 9789174595710 ; , s. 97-106
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- I denna artikel introduceras en modell för lärande där peer - lärande och formativ bedömning är integrerade med en traditionell föreläsningsform. I detta sammanhang genomfördes en fältstudie för att testa användbarheten av modellen för en byggingenjörskurs. Resultaten visar att modellen har gett lovande resultat med hänsyn till uppfyllandet av de förväntade studieresultaten. Artikeln diskuterar också några praktiska och teoretiska aspekter samt vilka hänsynstagande till kursens innehåll och uppläggning som skulle kunna påverka vid fullgörandet av modellen.
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| 10. |
- Hassan, Osama, 1969-
(författare)
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Remediation Of Chromium-contaminated Soil Using Blast Furnace Slag
- 2011
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Ingår i: International Journal of Sustainable Development and Planning. - : WIT Press. - 1743-7601 .- 1743-761X. ; 6:1, s. 81-90
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, it is attempted to study the capacity of blast furnace to stabilize cr(VI)-contaminated soils. The slag samples are incorporated with soils in different proportions and the resulted leachate is tested using batch and column experiments to simulate static and dynamic flows. furthermore, the mechanism by which the chro-mium in the soil is reduced by the iron slag is discussed. The study demonstrated that blast furnace slag can effectively stabilize cr(VI)-contaminated soils.
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| 11. |
- Hassan, Osama, 1969-
(författare)
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The role of peer-learning and formative assessment in effective engineering learning environments : A case study
- 2014
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Ingår i: Journal of Applied Research in Higher Education. - : Emerald Group Publishing Limited. - 2050-7003 .- 1758-1184. ; 6:2, s. 285-294
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Tidskriftsartikel (refereegranskat)abstract
- Purpose – The purpose of this paper is to investigate the role of peer learning and formative assessment as two creative learning methods in engineering learning environments. The results show that both models have yielded promising results with regard to meeting the criteria for the expected learning outcomes of the curriculum. However, the integrated model has resulted in better results than the model of formative assessment. The paper discusses also some practical and theoretical aspects related to the learning models.Design/methodology/approach – It is advanced two general learning models; in the first model, the formative assessment is integrated with peer learning and in the second one, the formative assessment is solely used to enhance the learning. A field case study is conducted to investigate the effect of using the learning models on the expected learning outcomes of the students in an engineering course.Findings – The results show that both learning models have yielded promising results with regard to meeting the criteria for the expected learning outcomes of the curriculum. However, the integrated model has resulted in better results than the model of formative assessment.Research limitations/implications – The two models can be applied for the engineering course that has both practical and theoretical aspects. It is expected that areas of expertize in engineering education can be developed very well with the models.Practical implications – The results show that the two learning models have yielded promising results with regard to meeting the criteria for the expected learning outcomes of the curriculum and that formative assessment link to good learning practice does indeed give improved learning. Social implications – Increase the effectiveness of learning in engineering education. Originality/value – Case study based on observation and planning.
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| 12. |
- Schedin, Staffan, et al.
(författare)
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An Integrated Learning Model In Collaboration With Industrial Partners
- 2014
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Ingår i: Proceedings of the 10th International CDIO Conference, Universitat Politècnica de Catalunya, Barcelona, Spain, June 16-19, 2014<em></em>. - Spain : Universitat Politècnica de Catalunya. - 846972147X - 9788469721476 ; , s. 1-9
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Konferensbidrag (refereegranskat)abstract
- We present a recently developed learning model of work integrated learning in the Bachelor programs in Mechanical Engineering as well as Electronic and Computer Engineering at Umeå University, Sweden. The model is based on an organized collaboration with our industrial partners in the surrounding geographic region. As a part of the collaboration, each participating student is guaranteed internships at a chosen company over the summer period.In the model, company based projects are integrated with some of the study program courses. Moreover, the participating students are given a possibility to perform their final thesis at the chosen company. We consider this collaboration as a "win-win situation" for the three parties involved in the learning model: the students, the University/faculty and the industrial partners. A number of positive effects have been observed and documented as follows:i) The integrated learning improves the learning process for the students, where learning, knowledge and practice are integrated into the engineering curricula.ii) The general quality of the study programs in the faculty has been developed and improved based on the professional skills as required by modern industrial companies.iii) The obtained advantage for the industrial partners has been to establish professional contacts with the students as well as the possibility to be acquainted with potential future employees.We discuss the experiences of this learning model in relation to CDIO standard 7 (Integrated Learning Experiences) and 8 (Active Learning). It has been found that the company based projects promote interdisciplinary learning as well as fostering system building skills and personal communication skills. Moreover, the developed learning model supports the expected learning outcomes, especially with regard to interpersonal skills, teamwork and communication. Finally, we investigate the learning theories that support the developed learning model from a pedagogical point of view.
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| 13. |
- Schedin, Staffan, et al.
(författare)
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Modell för arbetsintegrerat lärande på högskoleingenjörsutbildning
- 2013
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Konferensbidrag (refereegranskat)abstract
- Vi beskriver en nyligen införd modell för arbetsintegrerat lärande (AIL) eller co-op (co-operative education) på högskoleingenjörsprogrammen i maskinteknik respektive elektro- och datorteknik. Modellen innebär att genom samverkan med företag i närregionen erbjuda och garantera ett antal programstudenter feriearbeten under två perioder, samt examensarbeten. I modellen ingår också företagsanknutna projektarbeten och en studieresa. Upplägget förväntas bidra till positiva effekter för samtliga parter, för utbildningsprogrammen, för samarbetsföretagen samt för studenterna. Vi förklarar även hur arbetsintegrerat lärande stöds av vedertagna lärandeteorier.
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