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Article
Publication date: 1 March 1991

Bernard J. GEURTS

A one‐dimensional finite difference scheme adapted to high order moment equation models arising in the approximate description of semiconducting submicron structures is presented…

88

Abstract

A one‐dimensional finite difference scheme adapted to high order moment equation models arising in the approximate description of semiconducting submicron structures is presented. The new scheme is a natural extension of the Scharfetter‐Gummel scheme used in drift‐diffusion models. Through local analytic solutions an accurate representation of exponentially varying solution components is realised.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 10 no. 3
Type: Research Article
ISSN: 0332-1649

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Book part
Publication date: 22 October 2019

Gabriel Sam Ahinful and Venancio Tauringana

The chapter investigates the relationship between environmental management practices (EMPs) and financial performance (FP).

Abstract

Purpose

The chapter investigates the relationship between environmental management practices (EMPs) and financial performance (FP).

Design/Methodology/Approach

The study is based on a sample of 187 SMEs and uses data on six EMPs (energy, water, waste, material, emissions, and biodiversity) collected through a self-administered questionnaire from owner-managers of SMEs. Ordinary least squares regression is employed to model the hypothesized paths.

Findings

The results suggest a positive and significant relationship between EMPs (energy, water, and material) and FP. There is also a significant positive relationship between an aggregate EMP measure and FP. However, other EMPs (waste, emissions, and biodiversity) are not significantly associated with FP. Overall, these results provide empirical support to the mostly normative suggestion that the conflicting results on the environmental management and financial performance relationship are partly due to the EMP measure used.

Research Limitations/Implications

The study is based on cross-sectional data, and therefore, it is impossible to determine any changes over time. Longitudinal studies could help confirm the relationship between EMP and FP over a longer period. From a policy perspective, this results mean that the Ghanaian EPA must monitor more closely for violations of laws and regulations relating to waste, emissions, and biodiversity since SMEs do not have incentives to manage these impacts without commensurate return.

Originality/Value

The study contributes by documenting evidence of the relationship between multiple measures of EMP and FP. This unlike most existing studies has enabled us to report evidence of how each EMP measure affects FP differently and where win–win opportunities are for SMEs. Thus, the win–win opportunities are associated with some EMP measures but not all.

Details

Environmental Reporting and Management in Africa
Type: Book
ISBN: 978-1-78973-373-0

Keywords

Available. Content available
Book part
Publication date: 24 June 2024

Noel Scott, Brent Moyle, Ana Cláudia Campos, Liubov Skavronskaya and Biqiang Liu

Free Access. Free Access

Abstract

Details

Cognitive Psychology and Tourism
Type: Book
ISBN: 978-1-80262-579-0

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Book part
Publication date: 30 December 2013

Bastian Ravesteijn, Hans van Kippersluis and Eddy van Doorslaer

Health is distributed unequally by occupation. Workers on a lower rung of the occupational ladder report worse health, have a higher probability of disability and die earlier than…

Abstract

Health is distributed unequally by occupation. Workers on a lower rung of the occupational ladder report worse health, have a higher probability of disability and die earlier than workers higher up the occupational hierarchy. Using a theoretical framework that unveils some of the potential mechanisms underlying these disparities, three core insights emerge: (i) there is selection into occupation on the basis of initial wealth, education and health, (ii) there will be behavioural responses to adverse working conditions, which can have compensating or reinforcing effects on health and (iii) workplace conditions increase health inequalities if workers with initially low socio-economic status choose harmful occupations and don’t offset detrimental health effects. We provide empirical illustrations of these insights using data for the Netherlands and assess the evidence available in the economics literature.

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Health and Inequality
Type: Book
ISBN: 978-1-78190-553-1

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Book part
Publication date: 1 December 2006

Jacques Durieu, Hans Haller and Philippe Solal

Abstract

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Cognitive Economics: New Trends
Type: Book
ISBN: 978-1-84950-862-9

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Article
Publication date: 19 August 2024

Melissa Cruz Puerto and María Sandín Vázquez

In this study, the research question posed was: What are the defining characteristics, limitations, and potential opportunities in the research on heterogeneity within ASD?

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Abstract

Purpose

In this study, the research question posed was: What are the defining characteristics, limitations, and potential opportunities in the research on heterogeneity within ASD?

Design/methodology/approach

This scoping review used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology to address the research question: “What are the defining characteristics, limitations, and potential opportunities in the research on heterogeneity within ASD?” A comprehensive literature search was conducted across databases including MEDLINE/PubMed, SciVerse Scopus and Springer Link, with keywords such as autism, autism spectrum disorder (ASD), heterogeneity and neurodevelopment. Inclusion criteria covered original research, reviews and protocols published since 1990, while irrelevant or out-of-date works were excluded. Thematic analysis was applied to collected data to identify common patterns, trends and key characteristics, leading to a narrative synthesis. Ethical review board approval was not required due to the nature of the review.

Findings

The scoping review underscored the multifaceted nature of ASD, emphasizing its clinical, methodological and investigational complexities. ASD’s diverse behavioral, social and biological characteristics challenged its classification as a uniform entity. To address this, the review examined strategies like stricter clinical criteria, categorization into functional subgroups, and larger, diverse sample sizes. Moreover, it highlighted the transformative role of Big Data and machine learning in advancing the comprehension of ASD’s manifold manifestations. This research contributed valuable insights and innovative approaches for addressing the intrinsic heterogeneity of ASD, reshaping the understanding of this complex condition.

Research limitations/implications

One limitation of this scoping review is that it primarily relied on existing literature and did not involve primary data collection. While the review synthesized and analyzed a substantial body of research, the absence of original data collection may limit the depth of insights into specific aspects of ASD heterogeneity. Future research could benefit from incorporating primary data collection methods, such as surveys or interviews with individuals with ASD and their families, to gain more nuanced perspectives on the condition’s heterogeneity.

Practical implications

The reliance on existing literature in this scoping review highlights the need for further empirical studies exploring ASD’s heterogeneity. Researchers should consider conducting primary data collection to capture real-world experiences and variations within the ASD population. This approach could provide more comprehensive and context-specific insights, ultimately informing the development of tailored interventions and support strategies for individuals with ASD and their families.

Originality/value

This paper offers a fresh perspective on understanding ASD by examining its clinical, methodological and investigational implications in light of its inherent heterogeneity. Rather than viewing ASD as a uniform condition, this study explores strategies such as stricter clinical criteria, subcategorization based on functionality and diverse sample sizes to address its complexity. In addition, this study highlights the innovative use of Big Data and machine learning to gain deeper insights into ASD’s diverse manifestations. This approach contributes new insights and promising directions for future research, challenging the conventional understanding of ASD as a singular entity.

Details

Advances in Autism, vol. 10 no. 4
Type: Research Article
ISSN: 2056-3868

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Article
Publication date: 5 March 2018

Steffen Metzner

For the purpose of decision-making in real estate portfolio management, alternatives are to be collected, assessed and prioritized. Due to the complexity of real estate markets…

325

Abstract

Purpose

For the purpose of decision-making in real estate portfolio management, alternatives are to be collected, assessed and prioritized. Due to the complexity of real estate markets, investment products and management processes, the respective decision situations are subject to several parameters. Multi-criteria models must be used to exactly evaluate and prioritize alternatives. Such models can be found in other economic and social areas but must be transferred or re-developed for the purposes of real estate management. The paper aims to discuss these issues.

Design/methodology/approach

The paper includes the transfer of the basic outranking methodology, the PROMETHEE (Preference Ranking Organization METHod für Enrichment Evaluations) method in particular, to real estate issues. Methods used outside the real estate industry are analyzed, selected and adapted by using real estate parameters (transfer approach).

Findings

Structured multi-criteria processes such as PROMETHEE are suitable for the solution of complex real estate selection decisions. The methodology with regard to the respective issues is much more consistent and efficient. PROMETHEE avoids the restriction of criteria in mathematical calculations and the restriction of quality in simple scorings.

Research limitations/implications

The target system and decision criteria of investors were used exemplarily. The individual parameters and criteria can lead to new model solutions.

Practical implications

Multi-criteria models such as PROMETHEE stringently and transparently solve complex decision problems and alternative evaluations in real estate portfolio management. They can be developed for strategic, tactical and operative decision situations. The decision quality and verification for compliance requirements improve.

Social implications

Multi-criteria models such as PROMETHEE can also be developed for social, societal and political decision situations.

Originality/value

First adaption of the outranking procedure PROMETHEE to a real estate decision situation in market analysis and portfolio management.

Details

Journal of Property Investment & Finance, vol. 36 no. 2
Type: Research Article
ISSN: 1463-578X

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Article
Publication date: 7 June 2019

Asghar Noormohammadi and Bing-Chen Wang

This paper aims to study turbulent dispersion of a passive plume emitting from a single elevated line source of different elevations in a plane channel flow by using direct…

102

Abstract

Purpose

This paper aims to study turbulent dispersion of a passive plume emitting from a single elevated line source of different elevations in a plane channel flow by using direct numerical simulation (DNS).

Design/methodology/approach

The investigation was conducted in both physical and spectral spaces, which includes an analysis of statistical moments and pre-multiplied spectra of the velocity and concentration fields. The pre-multiplied power spectra of the velocity and concentration fields are compared to identify the transition of the plume development from the turbulent convective stage to the turbulent diffusive stage.

Findings

It is observed that due to the presence of wall shear, the mean plume drifts toward the wall for the near-wall source release case. It is also observed that streamwise development of the plume is sensitive to both the source elevation and the downstream distance from the source. For the line source placed near the center of the channel, the plume development is dominated by the bulk meandering effects. However, for the plume emitting from the near-wall line source, it hits the ground soon after its release and becomes dominated by the wall shear. As the downstream distance from the line source increases, the streamwise development of the plume released from the near-wall line source transitions from a turbulent convective stage to a turbulent diffusive stage.

Originality/value

This paper represents an original DNS study of turbulent mixing and dispersion of a passive plume emitting from a line source of different elevations in a wall-bounded flow. This paper proposes a practical method to identify the transition of the plume development from the turbulent convective to the turbulent diffusive stages.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 6
Type: Research Article
ISSN: 0961-5539

Keywords

Available. Open Access. Open Access
Article
Publication date: 5 September 2023

Heini Pensar and Liisa Mäkelä

This paper examines an employee's recovery process in the remote-working context. It explores which elements of remote work are energy-consuming for employees and what action they…

1990

Abstract

Purpose

This paper examines an employee's recovery process in the remote-working context. It explores which elements of remote work are energy-consuming for employees and what action they can take to instigate the essential recovery strategy of psychological detachment.

Design/methodology/approach

The study adopts a qualitative research approach based on 89 semi-structured interviews with employees working from home with six large corporations from multiple industries. The data were interpreted using thematic analysis.

Findings

The study identifies a main theme – the energy-consuming elements of remote work – and three sub-themes: extended working hours, intensive working and reduced social support. Each theme incorporates elements controlled by individuals (internal) and those beyond their control (external). Second, the authors identified strategies that helped individuals to detach from work, and devised four sub-themes, the authors labeled cognitive controlling, physical disconnection from work, time-bound routines and non-work activities.

Originality/value

This is the first study to focus on recovery as a process in the context of remote working, and it contributes to the knowledge of psychological detachment and strategies for recovery and to the literature on contemporary remote working.

Details

Employee Relations: The International Journal, vol. 45 no. 7
Type: Research Article
ISSN: 0142-5455

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Article
Publication date: 4 September 2009

Kinyua Kamaria and Alfred Lewis

This paper focuses on not‐for‐profit (NFP) general management competencies and examines the predominant desired knowledge skills and abilities as a key component of general…

3015

Abstract

Purpose

This paper focuses on not‐for‐profit (NFP) general management competencies and examines the predominant desired knowledge skills and abilities as a key component of general management responsiveness capability in empirically validated strategic success hypothesis. The strategic success hypothesis postulates that the performance of an organization will be optimized when the strategic aggressiveness and the responsiveness capability of general management is aligned with the respective environment.

Design/methodology/approach

The research utilizes a content analysis approach whereby the contents of job postings for the top positions in NFP organizations from different sources were analyzed and summarized. The analysis involved the collection of a comprehensive list of the top‐level general management position or job advertisements posted in both print and electronic media. Some of the sources include the Non‐Profit Times, job postings by agencies, and electronic job posting boards.

Findings

One of the key findings was that the NFP sector utilizes the top‐level general management to address the fiscal management dynamics. Fundraising experiences and skills are emphasized and were listed as the key responsibility of the top‐level general management. There was also some emphasis on not‐for‐profit organization management skills and experiences along with communication, governance, interpersonal skills, budgets and fiscal management. The other finding was that in addition to the above sector related desired competencies, generic experience, skills and position responsibilities were emphasized.

Research limitations/implications

The limitations of this study include: Using job postings as a proxy for actual preferences for certain competencies has certain disadvantages. For instance, the quality of job postings in terms of information included might be a reflection of the writing skills and depositions of the drafters. The size and the life cycle stage of the organization might impact the need for certain competencies. For example, a small start‐up agency might not be concerned with governance or ethics issues like a huge organization such as the United Way. The nature of the NFP's activity may also influence the type of competencies sought.

Practical implications

The most important feature of any organization is the quality of its human resources. The NFP sector is currently faced with many challenges which include fiscal, technological, human resources, governance and overall effectiveness. While leadership is recognized as a powerful resource in determining the direction and the future of the organization, leadership alone is not sufficient to address all the problems facing the sector. Firms do need effective managers, good strategic management systems, motivated staff, and adequate financial resources to drive success.

Originality/value

The study found that formal educational requirements were emphasized with over 77 percent of the job postings listing bachelor degree and above as criteria for selection. This indicates that there is need to develop curriculum at the higher education level aimed at addressing the specific needs of the NFP sector. About 23 percent of the job postings did not specifically state formal education as criteria for selection; it might have been an oversight because it is unlikely an organization would hire a CEO with no reasonable formal education.

Details

Business Strategy Series, vol. 10 no. 5
Type: Research Article
ISSN: 1751-5637

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