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Article
Publication date: 1 January 1992

C. LOMBARD and E.H. MATHEWS

A general numerical method for finding the steady state solution of a cyclic system is presented. The method determines the initial values by enforcing the conditions of…

Abstract

A general numerical method for finding the steady state solution of a cyclic system is presented. The method determines the initial values by enforcing the conditions of periodicity. In this way the initial value is found by integrating through only one cycle, often resulting in a considerable saving of computing effort. The method is applicable to any linear discrete set of difference equations with periodic parameters and forcing functions. The application of the method to a single pole representation of heat flow in buildings is demonstrated.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 2 no. 1
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 1 May 1995

E.H. Mathews and P.A.J. Köhler

The design of optimum pipe and duct networks with available proceduresis difficult, if not impossible. A more efficient procedure that willautomatically produce the…

Abstract

The design of optimum pipe and duct networks with available procedures is difficult, if not impossible. A more efficient procedure that will automatically produce the optimum design is required. Such a procedure is presented in this article. The design is formulated as a constrained nonlinear optimization problem. This problem is solved using a unique numerical optimization algorithm. The solution entails the calculation of the cross sectional dimensions of the ducts and pipes so that the life cycle cost of the network is minimized. The topology equations are derived using graph theory thereby allowing complex networks with loops to be designed numerically. A duct network consisting of a fan and 35 duct sections is designed according to certain specifications. Using the proposed procedure optimum designs were obtained within seconds on a 33 MHz 486 micro‐computer. The procedure was further applied to the optimization of a coal pipeline. It is shown that the optimized solution will cost 14% ($8 million) less than the previous design with conventional design techniques.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 5 no. 5
Type: Research Article
ISSN: 0961-5539

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Book part
Publication date: 28 April 2021

Victoria J. VanUitert, Michael J. Kennedy and Lindsay M. Carlisle

Students with disabilities consistently underperform on academic achievement tests. In part, this is due to teachers being underprepared to provide the evidence-based…

Abstract

Students with disabilities consistently underperform on academic achievement tests. In part, this is due to teachers being underprepared to provide the evidence-based instruction needed to help students with disabilities succeed. Historically, professional development (PD) has been provided to educators yielding disappointing results. In this chapter, what is known about the components of effective PD and how to evaluate a PD program will be discussed. In particular, the role of coaching and the use of technology in PD models will be explored. The next steps in improving PD will be discussed.

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The Next Big Thing in Learning and Behavioral Disabilities
Type: Book
ISBN: 978-1-80071-749-7

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Article
Publication date: 1 June 1957

IN view of the ever‐increasing application of time and motion study techniques in this country it is difficult to understand why so few manufacturers of time and…

Abstract

IN view of the ever‐increasing application of time and motion study techniques in this country it is difficult to understand why so few manufacturers of time and labour‐saving equipment advertise the very items required by work study engineers.

Details

Work Study, vol. 6 no. 6
Type: Research Article
ISSN: 0043-8022

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Article
Publication date: 1 October 2005

M.J. Nieuwoudt and J.S. Wilcocks

The South African government is restructuring tertiary education, and subsidies to universities that do not build and strengthen their research capacity will be severely…

Abstract

The South African government is restructuring tertiary education, and subsidies to universities that do not build and strengthen their research capacity will be severely restricted. Hence, academics must publish more research. This study used a questionnaire to gauge the personal opinions and perceptions of and attitudes towards research held by South African Accounting academics. The questionnaire was based on international debates and discourses on Accounting education and research that suggest factors that might affect research production and consumption, and on informal discussions with colleagues in the discipline. Tertiary institutions can use this constructive information to build a research culture and improve research output among these academics, by changing perceptions where needed and empowering Accounting academics to conduct research. The results indicate that the main limitations to research output are inadequate qualifications and a lack of skills with regard to conducting research (only 10 per cent of the respondents possess a doctoral degree), insufficient time for conducting research, financial factors, a lack of mentorship and departmental support, and difficulty finding research topics. The debate on “teaching versus research” is also ongoing.

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Meditari Accountancy Research, vol. 13 no. 2
Type: Research Article
ISSN: 1022-2529

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Article
Publication date: 1 March 1992

Raydel Tullous and Richard Lee Utrecht

Examines the combinations available to purchasers regarding theselection of suppliers (sources), e.g. the use of a single or two ormore (multiple) sources. Considers the…

Abstract

Examines the combinations available to purchasers regarding the selection of suppliers (sources), e.g. the use of a single or two or more (multiple) sources. Considers the justification of either method in the context of reducing the uncertainty (risk) of a particular purchase. Illustrates the marketers view of sourcing and the differing sales tactics employed according to the suppliers′ preferences. Concludes that purchasers should examine uncertainty buying‐selling situations (UBSS) objectively with regard to their own organizations′ need criteria, e.g. cost and timeliness, this determining the relevant sourcing policy.

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Journal of Business & Industrial Marketing, vol. 7 no. 3
Type: Research Article
ISSN: 0885-8624

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Article
Publication date: 1 May 1992

J.A. VISSER and H. ROLFES

By modelling the unsteady heat transfer in liquid gas tanks, the temperature distribution in the tank as well as the heat flux reaching the liquid gas can be predicted…

Abstract

By modelling the unsteady heat transfer in liquid gas tanks, the temperature distribution in the tank as well as the heat flux reaching the liquid gas can be predicted. Knowledge of the temperature distribution and heat flux can be used to predict evaporation losses from the tank. By minimizing the evaporation losses, the thermal design of a gas tank can be optimized. This paper presents a finite difference simulation of the unsteady three‐dimensional heat transfer in gas tanks and an optimized configuration. The numerical procedure accounts for radiation from the sun as well as radiative and convective heat transfer with the environment. A non‐uniform grid is used because the tank consists of several different materials of varying dimensions and properties. Geometrical effects such as variations in the thickness of the insulation material and the diameter and height of the tanks are also studied in an attempt to optimize the design configuration.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 2 no. 5
Type: Research Article
ISSN: 0961-5539

Keywords

Content available
Article
Publication date: 15 May 2019

Laura-Maija Hero and Eila Lindfors

Collaboration between universities and industry is increasingly perceived as a vehicle to enhance innovation. Educational institutions are encouraged to build partnerships…

Abstract

Purpose

Collaboration between universities and industry is increasingly perceived as a vehicle to enhance innovation. Educational institutions are encouraged to build partnerships and multidisciplinary projects based around real-world open problems. Projects need to benefit student learning, not only the organisations looking for innovations. The context of this study is a multidisciplinary innovation project, as experienced by the students of an University of Applied Sciences in Finland. The purpose of this paper is to unfold students’ conceptions of the learning experience, to help teachers and curriculum designers to organise optimal conditions and processes, and support competence development. The research question was: How do students in higher professional education experience their learning in a multidisciplinary innovation project?

Design/methodology/approach

The study took a phenomenographic approach. The data were collected in the form of weekly diaries, maintained by the cultural management and social services students (n=74) in a mandatory multidisciplinary innovation project in professional higher education in Finland. The diary data were analysed using thematic inductive analysis.

Findings

The results of the study revealed that students’ understood the learning experience in relation to solvable conflicts and unusual situations they experienced during the project, while becoming aware of and claiming their collaborative agency and internalising phases of an innovation process. The competences as learning outcomes that students could name as developed related to content knowledge, different personal characteristics, social skills, emerging leadership skills, creativity, future orientation, social skills, technical, crafting and testing skills and innovation implementation-related skills, such as marketing, sales and entrepreneurship planning skills. However, future orientation and implementation planning skills showed more weakly than other variables in the data.

Practical implications

The findings suggest that curriculum design should enable networked, student-led and teacher supported pedagogical innovation processes that involve a whole path from future thinking and idea development through prototyping to implementation planning of the novel solution. Teachers promote deep comprehension of the innovation process, monitor and ease the pain of conflict if it threatens motivation, offer assessment tools and help in recognising gaps in individual competences and development needs, promote more future-oriented, concrete and implementable outcomes, and facilitate in bridging from innovation towards entrepreneurship planning.

Originality/value

The multidisciplinary innovation project described in this study provides a pedagogical way to connect higher education to the practises of society. These results provide encouraging findings for organising multidisciplinary project activities between education and working life. The paper, therefore, has significant value for teachers and entrepreneurship educators in designing curriculum and facilitating projects. The study promotes the dissemination of innovation development programmes in between education and work organisations also in other than technical and commercial fields.

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Article
Publication date: 3 May 2013

Alida (Leandi) Elizabeth Streeter and Derick de Jongh

This study aims to identify the key factors that influence the successful implementation of clean energy interventions in low‐income urban communities in South Africa.

Abstract

Purpose

This study aims to identify the key factors that influence the successful implementation of clean energy interventions in low‐income urban communities in South Africa.

Design/methodology/approach

The study took the form of three phases: an explorative, primary data‐gathering process through semi‐structured interviews where secondary data were made available by respondents in the form of official project reports; data analysis of the primary qualitative, explorative, semi‐structured interview data and the secondary documentary data obtained with consent; and identifying and describing the key factors which influence the implementation of clean energy interventions in low income‐urban communities.

Findings

The results indicated that although many important factors were identified throughout this research, the ultimate success of the implementation of clean energy interventions in these communities lies not only in the clean energy interventions themselves, but rather hinges on nine key factors: project planning and development; community participation; community employment; political buy‐in; communication and engagement; beneficiary criteria; installation and maintenance; project management; and technology and suppliers.

Originality/value

The findings from this study provide useful insights to all stakeholders involved in the development and implementation of clean energy interventions in low‐income urban communities.

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Article
Publication date: 5 April 2013

Maria Garbuzova‐Schlifter and Reinhard Madlener

The Russian Energy Service Company (ESCO) market emerges rapidly due to the new energy efficiency legislation that has been implemented since 2009. However, a clear…

Abstract

Purpose

The Russian Energy Service Company (ESCO) market emerges rapidly due to the new energy efficiency legislation that has been implemented since 2009. However, a clear identification of the Russian ESCOs, comparable to those operating on the basis of Energy Performance Contracting (EPC) in the Western markets, remains rather difficult. Hence, aside from the independent ESCOs identified, further energy service‐providing companies (ESPCs) are within the scope of this survey. This paper aims to address these issues.

Design/methodology/approach

Building on comprehensive qualitative research of the international and Russian academic and non‐academic literature on the ESCO concept and an expert interview, an explorative, questionnaire‐based survey among 161 Russian energy companies and organizations was conducted. A total of 28 usable responses were returned, corresponding to a response rate of 17 per cent. Non‐parametric exact tests are used for the statistical analysis.

Findings

The authors' findings show that only nine of the surveyed ESCOs have acquired energy performance‐based projects. In line with the new energy efficiency legislation, such projects are strongly supported in the state sector but much less so in the commercial sector. Most of the projects are financed either through ESCOs' own funds, direct loans to customers, or by the customers themselves. Russian banks, however, rarely provide direct loans for energy performance‐based projects of ESCOs, but rather prefer to offer financial leasing contracts. The contractual form “guaranteed savings”, which is generally more applicable in mature ESCO markets, is gaining in importance, while “shared savings” is barely used.

Originality/value

This paper delivers, to the best of the authors' knowledge, the first systematic empirical investigation of the Russian ESCO industry, taking into account experiences from the international ESCO markets.

Details

International Journal of Energy Sector Management, vol. 7 no. 1
Type: Research Article
ISSN: 1750-6220

Keywords

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