scholarly journals Thermal analysis and post construction verification

2019 ◽  
Vol 38 (1) ◽  
pp. 51-67
Author(s):  
Cormac Flood ◽  
Lloyd Scott

Purpose The residential sector in Ireland accounted for 25 per cent of energy related CO2 emissions in 2016 through burning fossil fuels, a major contributor to climate change. In support of Ireland’s CO2 reduction targets, the existing housing stock could contribute greatly to the reduction of space-heating energy demand through retrofit. Approximately 50 per cent of Ireland’s 2m dwellings pre-date building regulations and are predominantly of cavity and solid wall construction, the performance of which has not been extensively investigated at present. Although commitment to thermal upgrade/retrofit of existing buildings may increase under future government policies, the poor characterisation of actual thermal performance of external walls may hinder the realisation of these targets. Thermal transmittance (U-values) of exterior walls represents a source of uncertainty when estimating the energy performance of dwellings. It has been noted in research that the standard calculation methodology for thermal transmittance should be improved. Implementing current U-value calculation methods may result in misguided retrofit strategies due to the considerable discrepancies between in situ measurements and calculated wall U-values as documented in the case studies carried out in this research. If the method of hygrothermal analysis were to be employed as a replacement for the current standard calculation, it could have significant implications for policy and retrofit decision making. The paper aims to discuss this issue. Design/methodology/approach This research project analysed a case study situated in Dublin, Ireland. The case studies offer an account of the in situ thermal transmittance of exterior walls and link these to hygrothermally simulated comparisons along with more traditional design U-values. Findings The findings of this research identify discrepancies between in situ and design U-values, using measurement, hygrothermal simulation and standard method U-value calculations. The outcomes of the research serve as an introduction to issues emanating from a larger research project in order to encourage researchers to understand and further explore the topic. Originality/value It has previously been highlighted that moisture content is linked to the increase in thermal conductivity of building materials, thus reducing the thermal effectiveness and increasing the elemental U-value. Therefore, it is vital to implement reliable prediction tools to assess potential thermal performance values. This paper presents the findings of a critical instance case study in Dublin, Ireland in which an existing west facing external wall in a semi-detached dwelling was analysed, simulated and measured to verify the elemental wall assembly and quantify thermal transmittance (U-value) incorporating the major criteria required for building performance simulation.

2018 ◽  
pp. 60-67
Author(s):  
Henrika Pihlajaniemi ◽  
Anna Luusua ◽  
Eveliina Juntunen

This paper presents the evaluation of usersХ experiences in three intelligent lighting pilots in Finland. Two of the case studies are related to the use of intelligent lighting in different kinds of traffic areas, having emphasis on aspects of visibility, traffic and movement safety, and sense of security. The last case study presents a more complex view to the experience of intelligent lighting in smart city contexts. The evaluation methods, tailored to each pilot context, include questionnaires, an urban dashboard, in-situ interviews and observations, evaluation probes, and system data analyses. The applicability of the selected and tested methods is discussed reflecting the process and achieved results.


2015 ◽  
Vol 43 (3) ◽  
pp. 7-14 ◽  
Author(s):  
Jim Moffatt

Purpose – This case example looks at how Deloitte Consulting applies the Three Rules synthesized by Michael Raynor and Mumtaz Ahmed based on their large-scale research project that identified patterns in the way exceptional companies think. Design/methodology/approach – The Three Rules concept is a key piece of Deloitte Consulting’s thought leadership program. So how are the three rules helping the organization perform? Now that research has shown how exceptional companies think, CEO Jim Moffatt could address the question, “Does Deloitte think like an exceptional company?” Findings – Deloitte has had success with an approach that promotes a bias towards non-price value over price and revenue over costs. Practical implications – It’s critical that all decision makers in an organization understand how decisions that are consistent with the three rules have contributed to past success as well as how they can apply the rules to difficult challenges they face today. Originality/value – This is the first case study written from a CEO’s perspective that looks at how the Three Rules approach of Michael Raynor and Mumtaz Ahmed can foster a firm’s growth and exceptional performance.


2021 ◽  
Vol 22 (3) ◽  
pp. 477-496
Author(s):  
Janette Brunstein ◽  
Mark Edward Walvoord ◽  
Ed Cunliff

Purpose The purpose of this study is to examine the possible benefits of approaching sustainability-related teaching cases from the perspective of problem-posing (PP) instead of problem-solving (PS). Design/methodology/approach A document analysis methodology (Silverman, 2011) was used to analyze sustainability teaching case study abstracts and learning objectives from business databases. Cases were reviewed and classified as PP, PS or other. PP cases were further subclassified on one of three axes. Findings Of 117 cases reviewed, most were PS (66%) with only 9% PP. Theoretical and pedagogical implications are discussed with recommendations for writing or converting, PS to PP cases for classroom use. Theoretical contributions include identification of three distinct and complementary views of PP, described in these axes: emancipatory; problematizing metaphors and premises; and rational, process and means-focused cases, not triggering transformative learning theory. Of 10 cases classified as PP cases, 3 were subclassified as emancipatory. Research limitations/implications This research is limited to case study titles containing “sustainability” and analyses of their descriptions and learning objectives only. Next phases of the research will examine differences in student learning between PS and PP in situ. Practical implications The research identifies a unique approach to the authoring and use of case studies that hold the potential for increasing students’ critical thinking capabilities and production of solutions to sustainability issues. Originality/value There is limited research and analysis of the identification and implications of using PP pedagogy.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Vishalache Balakrishnan

PurposeTo showcase the importance of digital citizenship in the current era. This article compares the nine features of digital citizen provided by Ribble and Bailey (2007) with a case study conducted in a multicultural setting and identifies the tensions between ethics, religion and cultural norms in that environment.Design/methodology/approachA case study approach has been used in this research. Why case study? Because it is unique and provides in-depth, unique and invaluable findings. Case studies researchers have contributed to the development of case study research from diverse disciplines. Historical examples of case studies go back as far as the nineteenth century with the biography of Charles Darwin (Stewart, 2014). The dominance of positivism in science in the late 1940 and 1950s in social science sidelined qualitative approaches such as case studies. Although case study research was often criticized for its inability to support generalizations, and thus, provided limited validity and value as a research design (Merriam, 2009; Stewart, 2014), case study research provides intensive analysis of an issue. A Case study is intrinsic, instrumental and collective (Stake, 1995, 2006). Case study research encourages the detailed enquiry of a unit of analysis within its context.FindingsFindings show that current society needs to be educated on the nine aspects of digital citizenship. In the current era, changes are so rapid that every now and then, there must be collaboration and cooperation between different agencies to ensure that the tension between religiosity, cultural norms and ethics would be able to find some common ground. With more knowledge and wisdom on human rights, sustainability education and project-based learning in Civics Education, teachers, students, parents and community should often meet to decide on controversial issues and find ways to ensure that each one in society has the knowledge, skills and values for digital citizenship to grow and flourish.Originality/valueThe article is original in nature and has much social impact.


Author(s):  
J J Plunkett ◽  
B G Dale

As part of a research project on the determination and use of quality-related costs, case study work has been carried out at four manufacturing companies. This paper presents the major findings from each case study. A measure of the status of quality costing is that it is not featured in the quality manuals at any of the four companies. The aspects of quality which will need to be developed if the subject is to be raised to the level enjoyed by other major business parameters are outlined.


Author(s):  
Joakim Hans Kembro ◽  
Andreas Norrman

Purpose The purpose of this study is to explore warehouse configuration in omni-channel retailing. Design/methodology/approach A multiple case study is conducted with six large omni-channel retailers from three different sectors. Findings The study shows an increase in the number, variation and frequency of flows passing through omni-channel warehouses. Along with an increased variety of stock keeping units (including singles vs multipacks), there is an increase in the complexity of planning and coordination of order fulfillment. Retailers test a mix of different solutions for storage and picking and partly shift focus to advanced sorting operations. The companies already have or plan to invest in substantial automation systems, which emphasize the importance of capturing and using accurate master data. Research limitations/implications The study highlights the need to understand the interrelations and co-development of configuration elements in omni-channel warehousing. The findings also suggest that a successful transformation requires increased collaboration with upstream and downstream partners. Conceptual models are developed to illustrate strategies and development paths in omni-channel warehousing, and suggestions for future research are summarized in a research agenda. A research limitation is the focus on Swedish retailers in three sectors (fashion, consumer electronics and DIY/construction material). Future studies can include additional sectors, extend the geographical scope and explore cross-regional differences. Practical implications As one of the few deeper case studies on omni-channel warehousing, practitioners will find new configurations described and analyzed here. Along with conceptual models, a synthesis of challenges and potential solutions are presented to support retailers’ practical analysis and decision making. Originality/value This is one of the first multiple case studies that go deeper into omni-channel warehouse configuration, which is of increasing importance to both scholars and practitioners in the field.


2020 ◽  
Vol 41 (4/5) ◽  
pp. 279-293 ◽  
Author(s):  
Małgorzata Fedorowicz-Kruszewska

PurposeThe purpose of this paper is to explain the concepts related to environmental education in the context of sustainable development, to indicate the links between them as well as to identify and organize elements of library activities that have the potential to implement environmental education.Design/methodology/approachThe method of analysis and criticism of scientific and professional literature and research reports was used. The multiple case study method was also used.FindingsAn analysis of literature and multiple case studies confirms the assumption that sustainable development is now a new paradigm of librarianship. Among the goals of sustainable development are environmental goals, which in libraries can be achieved through environmental education. A broad approach to environmental education has been proposed, which is implemented not only by using library services but also by building green collections, contacts with environmentally involved librarians, using ecological library infrastructure, observing sustainable management methods in libraries, cooperation between the library and the external environment in terms of the natural environment.Research limitations/implicationsAn analysis of 20 case studies was carried out regarding the implementation of pro-environmental measures in libraries. Examination of a larger number of case studies would probably give a more complete picture of this area of activity in libraries. The next stage of research should be the development of standards/guidelines in the field of environmental education in libraries, and then the development of methods and techniques for assessing the quality of library activities in this area and methods for assessing the impact of libraries on society and the environment in the field of environmental education.Practical implicationsThe paper indicates – based on case study analyses – those library elements that have potential in the field of environmental education. They were ordered in categories that were assigned to the three main components of a library: people, artefacts and processes.Social implicationsSustainable development is a new library paradigm. The paper focuses on the environmental area, specifically environmental education. It has been recognized that libraries have considerable potential for environmental education and should be seen as socially responsible organizations that take responsibility for the impact of their decisions and actions on society and the environment.Originality/valueThe paper explains the basic concepts of environmental education and the relationships between them. It defines the area of environmental education in libraries in terms of library activity elements that can be used to organize them according to the three main components of a library, which are people, artefacts and processes. The paper also indicates that sustainable development should be treated as a new paradigm of librarianship, and environmental education as a new research field of library and information science.


2020 ◽  
Vol 18 (3) ◽  
pp. 405-413
Author(s):  
Ruth Tsuria

Purpose This paper aims to argue for the importance of considering religious and cultural background as informing participant's access and attitudes towards digital media. Design/methodology/approach The paper takes a socio-cultural theoretical approach. In terms of methodology, it refers to case studies based on discourse analysis of online content. Findings The paper argues that the online discourse in the case studies presented discourages women from using digital media for their own empowerment. Research limitations/implications Some limitation include that this research focuses only on a case study from Judaism. Future research should examine how other religious traditions impact internet access and uses. Originality/value The paper's contribution is in its novel inclusion of religion as an element of the digital divide.


2014 ◽  
Vol 56 (4) ◽  
pp. 287-302 ◽  
Author(s):  
Mathews Nkhoma ◽  
Narumon Sriratanaviriyakul ◽  
Hiep Pham Cong ◽  
Tri Khai Lam

Purpose – The purpose of this paper is to understand the impact of real, localized case studies on students’ learning engagement, the learning process and learning experience and the role of such case studies in influencing students’ learning outcomes. Design/methodology/approach – Data were collected from 400 undergraduate students through an online questionnaire immediately after discussion of the case in Business Information Systems classes. Student learning from the case study was measured by two components consisting of case knowledge and case perceptions. The student course engagement questionnaire was used to examine engagement in skills, emotions, participation and performance while the study process questionnaire was administered to assess students’ learning approaches. Additionally, the seven predominant roles of the feedback were used to analyse students’ learning experience. Finally, students’ learning outcomes were assessed both in group performance and individual performance. Structure equation modelling was applied to test the causal model. Findings – The results revealed that the case study had a positive influence on students’ engagement in skills and emotions. Moreover, case perceptions led students to surface approach in their learning. Furthermore, case knowledge had a positive impact on the learning experience. Research limitations/implications – The study suggests that localized case studies should be designed cautiously. Furthermore the method of instruction regarding the method must be clearly explained for undergraduate students. Future research should consider a way of evaluating academic achievement as a result of using localized cases. Originality/value – The findings reported in the paper contributed to an area of educational research by emphasizing on the mediating role of learning engagement, the learning process and the learning experience.


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