| 1. |
- Jalilzadehazhari, Elaheh, 1985-, et al.
(författare)
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Application of analytical hierarchy process for selecting an interior window blind
- 2017
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Ingår i: Architectural Engineering and Design Management. - : Taylor & Francis. - 1745-2007 .- 1752-7589. ; 13:4, s. 308-324
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Tidskriftsartikel (refereegranskat)abstract
- Window blinds have a substantial role in shaping the energy consumption and improving thermal comfort and visual comfort. However, difficulties in selecting a window blind remain, due to existence of potential conflicts between visual, thermal, energy and life cycle cost. To overcome this problem, this study evaluates the performance of interior blinds, including venetian with slat of 0° and 45°, roller and double pleated blinds with respect to visual, thermal, energy and life cycle cost. Later, the Analytical hierarchy method (AHP) is used for selecting the best blind based on trade-off among the visual, thermal, energy and life cycle cost. In using AHP, visual comfort is determined as most important objective with a weight of 52%. The results show that venetian blind with slat of 0° drawn 100% is the trade-off blind. Accomplishing the sensitivity analysis on blinds’ global weight shows that venetian blind with slat of 0° drawn 100% remains the trade-off blind until the weight of energy and life cycle cost is below 37% and 57% respectively and the weight of visual comfort is above 4%. However, changing thermal comfort weight has no impact on ranking of the blinds. This study shows the capability of AHP in managing the conflicts.
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| 2. |
- Jalilzadehazhari, Elaheh, 1985-, et al.
(författare)
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Determinants of users’ acceptance of a computer-based system
- 2019
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Ingår i: 36th CIB W78 2019 Conference ICT in Design, Construction and Management in Architecture, Engineering, Construction and Operations (AECO), 18-20 September, 2019. - Newcastle, United Kingdom : University of Northumbria. ; , s. 786-797
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Konferensbidrag (refereegranskat)abstract
- Sweden has an ambitious target to attain 50% more efficient energy use by 2030. Improving the energy performance of buildings provides a great opportunity to achieve the above-mentioned target. At this point, windows play a substantial role in improving indoor environmental quality and reducing energy consumption and cost. A computer-based system was therefore developed, which allows selecting a suitable window design. The computer-based system was intended to be used in a large-sized window and door manufacturing company in Sweden. However, the benefits of implementing the computer-based system cannot be realized until users accept using it. Former literature employed the technology acceptance model to investigate the influence of external variables on cognitive beliefs and trace their effects on users’ intention and actual system use. A successful application of TAM relies on the specification of the external variable. Accordingly, this paper conducted a systematic literature review to determine the external variable, affecting users' acceptance, thereby extended TAM. The analyses of results showed that organizational, individual, technological and environmental characteristics were the most influential external variables when investigating determinants of users' acceptance toward a computer-based system. Organizational characteristics contained mainly top management support, training, organizational culture, and organizational size, while individual characteristics embraced users’ previous knowledge and experience. Technological characteristics comprised information quality and system quality, meanwhile environmental characteristics included fulfillment of regulations and competitiveness. The extended TAM overcomes limitations attributed to the unified theory of acceptance and use of technology model since it considers attitude as direct determinants of intentions. In addition, the extended TAM is advantageous when compared with technology, organization, environment framework, because it has clear constructs, which allows tracing the influence of external variables on cognitive beliefs, and thereby their effects on users’ intention and actual system use. The extended TAM will be used to investigate determinants of users’ acceptance of the computer-based system in the manufacturing company in Sweden and compare the effect of external variables on users' acceptance.
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| 3. |
- Jalilzadehazhari, Elaheh, 1985-, et al.
(författare)
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Developing a decision-making framework for resolving conflicts when selecting windows and blinds
- 2019
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Ingår i: Architectural Engineering and Design Management. - : Taylor & Francis. - 1745-2007 .- 1752-7589. ; 15:5, s. 357-381
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Tidskriftsartikel (refereegranskat)abstract
- Windows and blinds play a significant role in both shaping energy consumption and enhancing indoor comfort. But there are still difficulties with selecting windows and blinds due to the existence of potential conflicts between visual comfort, thermal comfort, energy consumption and life-cycle cost. A literature review was conducted with the purpose of developing a decision-making framework that resolves the conflicts, and allows selecting a window and blind design based on trade-off between visual comfort, thermal comfort, energy consumption and life-cycle cost. The decision-making framework was developed by integrating non-dominated sorting genetic algorithm-II as an optimization algorithm with analytical hierarchy process as a multi-criteria decision-making method. The optimization algorithm considers different window and blind design variables and analyses multiple designs, while the multi-criteria decision-making method ranks the optimization results and selects a trade-off design. An operating package enabled the decision-making framework to be automated. The operating package was obtained by coupling EnergyPlus as a simulation tool and modeFRONTIER as an integration platform. The decision-making framework was developed to select a trade-off window and blind design through intelligent use of simulation in analysing big-data in built environment, energy and cost sectors. Application of the framework ensures the minimum visual and thermal comfort thresholds with the lowest energy demand and cost. Architects and designers can use the framework during the design or renovation phase of residential and commercial buildings.
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| 4. |
- Johansson, Peter, 1966-, et al.
(författare)
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Byggherre-ICT : Förstudie om ICT-utveckling för byggherrefunktionen
- 2009
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Syftet med denna förstudie är att motivera och formulera hur svenska byggherrar, i egenskap av kravställare och beställare, ska kunna medverka till att påverka och driva utveckling inom ICT till nytta för byggherrefunktionen och därmed stärka byggherrens roll som förändringsagent.Förstudien har genomfört en enkätundersökning med svenska byggherrar avseende deras inställning till ICT. Resultatet visar att byggherrarna idag tydligt fokuserar på ICT som ett redskap att hantera problem i produktframställningsprocessen. Det är också inom detta område man ser de största affärsnyttorna. Det här är anmärkningsvärt, eftersom produktframställningen inte primärt är ett byggherreansvar. Resultatet visar också att de svenska byggherrarnas intresse och fokus ligger relativt sent i byggprocessen.Förstudien har som jämförelse studerat situationen i våra grannländer avseende ICT genom en nordisk kartläggning. En undersökning visar att Sverige idag är ledande i Norden när det gäller användning av BIM, men vi använder trots det bara en bråkdel av de verktyg som finns till förfogande, inte minst för byggherrens processer. I synnerhet Finland och Norge framstår som mer progressiva inom området, med starka offentliga beställare som driver utvecklingen och sätter standard för branschens samtliga aktörer. I Danmark har man lagstiftat om att projekt över en viss storlek skall ha digital informationshantering i enlighet med byggherrarnas önskemål, de s.k. byggherrekraven.I Danmark, Finland och Norge har man på detta vis utvecklat ICT-stöd för byggherrens processer i form av:informationsstrukturer för byggherrens krav, som ger säkrare informationsöverföringgenerering av lösningsförslaganalyser av dessa förslag i tidiga skedenverifieringsmetoder för automatisk verifiering av att ett lösningsförslag uppfyller kraven.Sammantaget ger detta en bild av en nordisk byggherreroll, där fokus ligger på tidiga skeden (produktbestämningen) och där byggherrekraven på ett tydligt sätt styr och formar hela byggprocessen och då inklusive valet av ICT-verktyg. Aktuella ICT-verktyg med tillämpning under byggprocessens olika skeden beskrivs i rapportens analysdel.Mot bakgrund av enkätundersökningen och den nordiska kartläggningen har förstudien formulerat en ny vision för svensk ICT-användning ur ett byggherreperspektiv. Visionen är att med hjälp av ICT stärka byggherrens nyckelposition som kravställare i förhållande till de andra aktörerna i byggprocessen genom att flytta fokus till byggprocessens tidiga skeden. Visionen innebär således att fokus flyttas från produktframställning till produktbestämning, med en tydlig koppling till de krav som ställs från verksamheten, kunden, brukaren, ägaren och samhället.
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| 5. |
- Merschbrock, Christoph, et al.
(författare)
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Same same, but different – or how construction informatics gets taught atuniversities in Norway and Sweden
- 2023
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Ingår i: ECPPM 2022 - eWork and eBusiness in Architecture, Engineering and Construction 2022. - Abingdon : CRC Press. - 9781032406732 - 9781032406749 - 9781003354222 ; , s. 662-668
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Konferensbidrag (refereegranskat)abstract
- In response to the increasing demand for construction informatics (CI) expertise, universities inthe Nordic countries have developed new educational offers. This study explores how CI related education is being delivered by three different universities, two in Norway and one in Sweden. By comparing curricula and interviewing CI teachers, this paper contributes to the recent debate on the international standardization of CI competence by providing a Scandinavian view. The paper uses a pedagogical framework for hybrid teaching identifying which different “Scandinavian” aspects of CI-based work are focused on education. The results illustrate how all universities provide core competencies for digital work in projects, but their emphasis differs. What all CI education, sampled in this paper, had in common is a strong emphasis on the socio-technical aspects of CI as well the hands-on technical aspects of BIM. It can be reasonably claimed that a more Scandinavian approach to CI education could further inform the standardization of BIM competence. Moreover, this integrated approach appears well suited for creating student engagement and for turning construction into a modern sector of the economy.
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| 6. |
- Siebmanns, Sandra, 1974-, et al.
(författare)
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The effect of nurse-led Internet-based cognitive behavioural therapy for insomnia on patients with cardiovascular disease : A randomized controlled trial with 6-month follow-up
- 2021
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Ingår i: Nursing Open. - : John Wiley & Sons. - 2054-1058. ; 8:4, s. 1755-1768
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To test the effect of nurse-led Internet-based cognitive behavioural therapy for insomnia (I-CBTI), tailored for patients with cardiovascular disease (CVD), with a 6-month follow-up.Design: A two-arm parallel-group randomized controlled trial (RCT) registered at clinicaltrials.gov (NTC03938805) and reported according to the CONSORT checklist.Methods: Forty-eight patients (mean age 72 years, 65% men) diagnosed with CVD and insomnia were randomized to either 9-week nurse-led I-CBTI with support, or an Internet-based self-study programme without support (control group). Insomnia Severity Index (ISI) and Short Form Health Survey (SF-12) were used as primary and secondary outcomes.Results: ISI showed a significant treatment effect of I-CBTI compared to the control group at 9-week follow-up. The mean ISI score in the I-CBTI group at 9 weeks post-treatment was maintained at the 6-month follow-up. Patients' adherence to I-CBTI was associated with a better effect on both the ISI and SF-12.
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| 7. |
- Öberg, Sandra, 1974-, et al.
(författare)
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Experiences and management of incidents that influence sleep in patients with cardiovascular disease and insomnia
- 2020
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Ingår i: Journal of Cardiovascular Nursing. - : Wolters Kluwer. - 0889-4655 .- 1550-5049. ; 35:4, s. 364-374
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Insomnia is a global problem and an important risk factor for patients living with cardiovascular disease (CVD), causing poor well-being and worsening disease prognosis. Yet, there is a lack of effective intervention strategies targeting sleep problems. To deliver patient-centered interventions and achieve good quality of sleep for this group, the own experiences of patients with CVD need to be understood.OBJECTIVE: The aim of this study was to describe experiences that influence the sleep situation and management of sleep problems among patients with CVD and insomnia.METHOD: A qualitative descriptive design with critical incident technique methodology was used. Twenty patients (13 men and 7 women; mean age, 73 years; range, 47-83 years) with single or multiple verified CVD diagnoses and insomnia were included.RESULTS: Four underlying categories of sleep disruptors were identified: cognitive, social, physical, and behavioral. Participants experienced distress from the heart condition at night, physically and cognitively, with high levels of concern about its consequences for themselves and their families. Participants' sleep management preferences and responses included cognitive, behavioral, and pharmacological management strategies. Participants preferred their own nonpharmacological insomnia management over professional advice.CONCLUSION: Patients with CVD and insomnia experienced both physical and cognitive distress from their heart condition and chose to adopt nonpharmacological insomnia management. Tailored professional support is needed to change precipitating behavioral factors to be able to treat insomnia, improve sleep, reduce symptom burden, and enhance quality of life.
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| 8. |
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| 9. |
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| 10. |
- Angelhoff, Charlotte, et al.
(författare)
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Swedish translation and validation of the Pediatric Insomnia Severity Index
- 2020
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Ingår i: BMC Pediatrics. - : BioMed Central. - 1471-2431. ; 20:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: To increase health and well-being in young children, it is important to acknowledge and promote the child's sleep behaviour. However, there is a lack of brief, validated sleep screening instruments for children. The aims of the study were to (1) present a Swedish translation of the PISI, (2) examine the factor structure of the Swedish version of PISI, and test the reliability and validity of the PISI factor structure in a sample of healthy children in Sweden.Methods: The English version of the PISI was translated into Swedish, translated back into English, and agreed upon before use. Parents of healthy 3- to 10-year-old children filled out the Swedish version of the PISI and the generic health-related quality of life instrument KIDSCREEN-27 two times. Exploratory and confirmatory factor analyses for baseline and test-retest, structural equation modelling, and correlations between the PISI and KIDSCREEN-27 were performed.Results: In total, 160 parents filled out baseline questionnaires (test), whereof 100 parents (63%) filled out the follow-up questionnaires (retest). Confirmative factor analysis of the PISI found two correlated factors: sleep onset problems (SOP) and sleep maintenance problems (SMP). The PISI had substantial construct and test-retest reliability. The PISI factors were related to all KIDSCREEN-27 dimensions.Conclusions: The Swedish version of the PISI is applicable for screening sleep problems and is a useful aid in dialogues with families about sleep.
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