Search results

1 – 10 of 47
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 29 May 2007

J.H. Potgieter, M. Sephton and Z.W. Nkosi

To evaluate the corrosion resistance of four different stainless steels often employed in hot end exhaust components.

996

Abstract

Purpose

To evaluate the corrosion resistance of four different stainless steels often employed in hot end exhaust components.

Design/methodology/approach

This paper evaluated the outcomes of the hot salt test and the cyclic oxidation test on four different stainless steels, used as hot end exhaust components. The specimens were analyzed by means of SEM for surface changes and the weight loss was considered.

Findings

The general corrosion rate and pitting resistance under all the test conditions for hot end exhaust components indicated that 434 was by far the most corrosion resistant alloy, followed by 1.4509 and 321, and lastly 304 was the least corrosion resistant. In general, the ferritic stainless steels, especially 434, outperformed the austenitic ones under all the test conditions.

Practical implications

The comparison of the corrosion resistance and rate, between the frequently used ferritic and austenitic stainless steels used in the exhaust system, gave a clear indication that the ferritic steels will provide prolonged service and this could be beneficial information to the manufacturers.

Originality/value

A new approach to summarise the materials' behaviour and their relative performance in the tests performed was developed. This proposed summary of a number of corrosion indicators could serve as a relative guide to alloy selection for use in hot end automotive exhaust systems for both manufacturers and users.

Details

Anti-Corrosion Methods and Materials, vol. 54 no. 3
Type: Research Article
ISSN: 0003-5599

Keywords

Access Restricted. View access options
Article
Publication date: 1 March 1992

Lizhang Zhuang and George Burns

Looks at how Activity‐Based Costing (ABC) may be implemented insectors consisting of Non‐Standard Route Manufacturers (NSRM). Followinga brief summary of ABC, introduces the…

899

Abstract

Looks at how Activity‐Based Costing (ABC) may be implemented in sectors consisting of Non‐Standard Route Manufacturers (NSRM). Following a brief summary of ABC, introduces the concept of NSRM. Within the context of a selected knitwear company, identifies a three‐stage procedure with attention focused on the first stage. product classification. A three‐division model was developed and proved more satisfactory, when tested, than a five‐division one. The finalized product classification scheme based on this model is then devised to reduce the number of product categories from 250 to nine. With the classification scheme gives an example which illustrates how ABC works compared with the previous costing approach.

Details

International Journal of Operations & Production Management, vol. 12 no. 3
Type: Research Article
ISSN: 0144-3577

Keywords

Access Restricted. View access options
Article
Publication date: 25 July 2019

Hongda Deng, Xianlong Cao, Yongbo Yan and Kuanya Xie

The purpose of this paper is to research whether microstructure varieties of zones at welded joints pose a tremendous effect on its corrosion in SC-CO2.

152

Abstract

Purpose

The purpose of this paper is to research whether microstructure varieties of zones at welded joints pose a tremendous effect on its corrosion in SC-CO2.

Design/methodology/approach

The interrelation between the corrosion and microstructure of base metal (BM), fine grain heat affected zone (FHAZ), coarse grain heat affected zone and weld metal (WM) in welded of X80 steel in water saturated supercritical CO2 was studied by using optical microscope, weight loss test, electrochemical measurements and surface analytical techniques.

Findings

The all subzones of X80 weld joints were attacked by SC-CO2 corrosion and showed flower-like corrosion scale spots consisted of granular FeCO3. The most severe corrosion appeared at WM due to lower proportion of ferrite to pearlite, but the slightest corrosion displayed at BM. GHAZ with larger grains and more polygonal ferrite exhibited more severe corrosion than that at BM. Due to its smaller grain, FHAZ displayed comparatively more severe corrosion to that at BM.

Originality/value

There exists close interrelation between the corrosion and microstructure of the welded carbon steel in water saturated supercritical CO2.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 4
Type: Research Article
ISSN: 0003-5599

Keywords

Access Restricted. View access options
Article
Publication date: 28 June 2021

Soumendra N. Bagchi and Rajeev Sharma

Understanding multiple dimensions of problem or opportunity and the context in an evolving environment is an essential task for leaders. The allied expectation is to be aware of…

267

Abstract

Purpose

Understanding multiple dimensions of problem or opportunity and the context in an evolving environment is an essential task for leaders. The allied expectation is to be aware of gaps in knowledge, and areas of organizational ignorance, which can prove detrimental for the organization. In this paper, we propose a framework based on social exchange theory directed towards developing organizational mindfulness.

Design/methodology/approach

This paper is a reflective note based on workshops conducted for senior managers of a Fortune Global 500 petrochemical company having more than 10,000 employees. The workshop was carried out in modular mode, with one module conducted in virtual mode and the second module in physical mode. The time gap between each module was two months.

Findings

Purposive questioning, engaged in both as a social exchange as well as to solicit information from multiple stakeholders which may otherwise would have been ignored, develops broader and more detailed analysis of problems and extensive individual and organizational mindfulness.

Practical implications

This paper offers a methodology for managers to explore and develop solutions for complex problems. The methodology also provides identification of areas requiring organizational re-learning.

Originality/value

This paper contributes to the literature on problem solving by providing a methodology to develop individual and organizational mindfulness. The structured format of the approach ensures this can be formalized and taught to decision makers, without being limited by their prior background.

Details

Development and Learning in Organizations: An International Journal, vol. 36 no. 2
Type: Research Article
ISSN: 1477-7282

Keywords

Access Restricted. View access options
Article
Publication date: 18 February 2020

Chandra Nanthakumar

The purpose of this paper is to investigate the effectiveness of classical yoga not only as a complementary therapy but also as a viable option in the management of anxiety and…

1597

Abstract

Purpose

The purpose of this paper is to investigate the effectiveness of classical yoga not only as a complementary therapy but also as a viable option in the management of anxiety and depression.

Design/methodology/approach

Papers were retrieved using a combination of databases including PubMed/MEDLINE and PsycINFO.

Findings

The findings revealed that the practice of yoga as complementary therapy and also as a stand-alone therapy is effective in managing and reducing anxiety and depression.

Research limitations/implications

All the studies reviewed in this paper were methodologically limited in terms of sample size, sample heterogeneity, yoga intervention styles, duration of practice and teaching methods. Further research is needed to address key areas such as how much yoga is needed per week, duration of each class and specifically the types of asanas and pranayama to practise to bring about change in the anxiety and depressive states.

Practical implications

This review has provided substantial insight to yoga as a complementary and/or stand-alone therapy for anxiety and depression which is much needed in this contemporary society. The Malaysian community especially teenagers and adults, should consider incorporating yoga as part of their daily routine to experience and reap its benefits. It is suggested that yoga be included as part of the physical education curriculum in learning institutions and as a recreational activity for staff in public and private organisations.

Originality/value

The findings of this review provide an avenue for victims to cope with and manage anxiety and depression through the practice of yoga.

Details

The Journal of Mental Health Training, Education and Practice, vol. 15 no. 3
Type: Research Article
ISSN: 1755-6228

Keywords

Access Restricted. View access options
Article
Publication date: 1 May 2004

Raduan Che Rose, Jegak Uli, Mohani Abdul and Kim Looi Ng

While much is known generally about predictions of customer‐perceived service quality, their application to health services is rarer. No attempt has been made to examine the…

7137

Abstract

While much is known generally about predictions of customer‐perceived service quality, their application to health services is rarer. No attempt has been made to examine the impact of social support and patient education on overall service quality perception. Together with six quality dimensions identified from the literature, this study seeks to provide a more holistic comprehension of hospital service quality prediction. Although 79 percent of variation is explained, other than technical quality the impact of the remaining factors on quality perception is far from constant, and socio‐economic variables further complicate unpredictability. Contrary to established beliefs, the cost factor was found to be insignificant. Hence, to manage service quality effectively, the test lies in how well healthcare providers know the customers they serve. It is not only crucial in a globalized environment, where trans‐national patient mobility is increasingly the norm, but also within homogeneous societies that appear to converge culturally.

Details

International Journal of Health Care Quality Assurance, vol. 17 no. 3
Type: Research Article
ISSN: 0952-6862

Keywords

Access Restricted. View access options
Article
Publication date: 9 January 2017

Nicole Butterfield, Tim Schultz, Philippa Rasmussen and Michael Proeve

The purpose of this paper is to examine the role of yoga in the management of anxiety and depression, development of mindfulness and self-compassion and implications for mental…

5051

Abstract

Purpose

The purpose of this paper is to examine the role of yoga in the management of anxiety and depression, development of mindfulness and self-compassion and implications for mental health care delivery and mental health professionals, with a specific focus on nursing practice.

Design/methodology/approach

A search of electronic databases Scopus, CINAHL, EMBASE, Medline and Cochrane Library was undertaken.

Findings

There is growing research evidence supporting the use of yoga as an adjunct or combination therapy for the management of stress, anxiety and depression. Mindfulness has been indicated as a potential mechanism of change but needs further research. Health care professionals may play an important role in supporting consumers to engage in yoga as part of their mental health care.

Research limitations/implications

Yoga research to date has been limited by methodological weaknesses including wide variation of yoga practices, styles and teaching methods; difficulties in double-blinding, suitable placebo-control; lack of randomised controlled trials and small sample sizes. The literature highlights that more high-quality yoga and mental health research is needed.

Practical implications

The paper introduces the potential role of yoga for anxiety and depression in the health care system and the role of mental health professionals in implementing and promoting holistic yoga-based therapies.

Originality/value

This paper proposes a yoga model for mental health and provides insight into a proposed new direction for future mental health care and the role of nursing practice and other mental health professionals.

Details

The Journal of Mental Health Training, Education and Practice, vol. 12 no. 1
Type: Research Article
ISSN: 1755-6228

Keywords

Access Restricted. View access options
Article
Publication date: 1 July 2005

Jonathan Dark

This paper provides a critique of minimum variance hedging using futures. The paper develops the conventional minimum variance hedge ratio (MVHR) and discusses its estimation. A…

709

Abstract

This paper provides a critique of minimum variance hedging using futures. The paper develops the conventional minimum variance hedge ratio (MVHR) and discusses its estimation. A review of the wide variety of alternative methods used to construct MVHRs is then performed. These methods highlight many of the potential limitations in the conventional framework. The paper argues that the literature should focus more on the assumptions underlying the conventional MVHR, rather than improving the techniques used to estimate the conventional MVHR.

Details

Accounting Research Journal, vol. 18 no. 1
Type: Research Article
ISSN: 1030-9616

Keywords

Access Restricted. View access options
Article
Publication date: 12 June 2017

George Boak, Ruth Sephton, Elaine Hough and Ruth ten Hove

The purpose of this paper is to evaluate a process change in physiotherapy services and to explore factors that may have influenced the outcomes.

1682

Abstract

Purpose

The purpose of this paper is to evaluate a process change in physiotherapy services and to explore factors that may have influenced the outcomes.

Design/methodology/approach

This is a multiple case study and information was gathered from eight physiotherapy teams over 24 months.

Findings

The process change was successfully implemented in six teams. It had a clear, positive effect on service quality provided to patients in three teams. Whilst quality also improved in three other teams, other issues make changes difficult to assess. Factors that enabled process change to be effective are suggested.

Research limitations/implications

The findings are based on results achieved by only eight English teams.

Practical implications

This process change may be appropriate for other teams providing therapy services if attention is paid to potential enabling factors, and a learning approach is adopted to designing and introducing the change.

Originality/value

To the best of the authors’ knowledge, no other longitudinal process change study in therapy services has been published.

Details

International Journal of Health Care Quality Assurance, vol. 30 no. 5
Type: Research Article
ISSN: 0952-6862

Keywords

Access Restricted. View access options
Book part
Publication date: 26 April 2014

Panayiotis F. Diamandis, Anastassios A. Drakos and Georgios P. Kouretas

The purpose of this paper is to provide an extensive review of the monetary model of exchange rate determination which is the main theoretical framework on analyzing exchange rate…

Abstract

Purpose

The purpose of this paper is to provide an extensive review of the monetary model of exchange rate determination which is the main theoretical framework on analyzing exchange rate behavior over the last 40 years. Furthermore, we test the flexible price monetarist variant and the sticky price Keynesian variant of the monetary model. We conduct our analysis employing a sample of 14 advanced economies using annual data spanning the period 1880–2012.

Design/methodology/approach

The theoretical background of the paper relies on the monetary model to the exchange rate determination. We provide a thorough econometric analysis using a battery of unit root and cointegration testing techniques. We test the price-flexible monetarist version and the sticky-price version of the model using annual data from 1880 to 2012 for a group of industrialized countries.

Findings

We provide strong evidence of the existence of a nonlinear relationship between exchange rates and fundamentals. Therefore, we model the time-varying nature of this relationship by allowing for Markov regime switches for the exchange rate regimes. Modeling exchange rates within this context can be motivated by the fact that the change in regime should be considered as a random event and not predictable. These results show that linearity is rejected in favor of an MS-VECM specification which forms statistically an adequate representation of the data. Two regimes are implied by the model; the one of the estimated regimes describes the monetary model whereas the other matches in most cases the constant coefficient model with wrong signs. Furthermore it is shown that depending on the nominal exchange rate regime in operation, the adjustment to the long run implied by the monetary model of the exchange rate determination came either from the exchange rate or from the monetary fundamentals. Moreover, based on a Regime Classification Measure, we showed that our chosen Markov-switching specification performed well in distinguishing between the two regimes for all cases. Finally, it is shown that fundamentals are not only significant within each regime but are also significant for the switches between the two regimes.

Practical implications

The results are of interest to practitioners and policy makers since understanding the evolution and determination of exchange rates is of crucial importance. Furthermore, our results are linked to forecasting performance of exchange rate models.

Originality/value

The present analysis extends previous analyses on exchange rate determination and it provides further support in favor of the monetary model as a long-run framework to understand the evolution of exchange rates.

Details

Macroeconomic Analysis and International Finance
Type: Book
ISBN: 978-1-78350-756-6

Keywords

1 – 10 of 47
Per page
102050