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Article

R. Bennacer, K. Sefiane, M. El‐Ganaoui and C. Buffone

A computational model is developed to describe convection in volatile liquids evaporating in capillary tubes. Experimental work has demonstrated the existence of such…

Abstract

A computational model is developed to describe convection in volatile liquids evaporating in capillary tubes. Experimental work has demonstrated the existence of such convective structures. The correlation between this convection and the phase change process has been experimentally established. Temperature distribution on the liquid‐vapour interface is considered in order to characterise the minimum of radial temperature gradient required to initiate and orientate Marangoni convection. Direct numerical simulation using finite volume approximation is used to investigate the heat and mass transfer in the liquid phase. The case of a capillary tube filled with a volatile liquid is investigated for various Marangoni numbers, to characterise heat and mass transfers under conditions close to realistic operating parameters. The simulation shows that a minimum irregularity in evaporative flux along the liquid‐vapour interface is necessary to trigger thermocapillary convection. The enhancement of heat and mass transfer by Marangoni convection is also investigated.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 14 no. 7
Type: Research Article
ISSN: 0961-5539

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Article

Elaine Lim, Tze Cheng Kueh and Yew Mun Hung

The present study aims to investigate the inverse-thermocapillary effect in an evaporating thin liquid film of self-rewetting fluid, which is a dilute aqueous solution…

Abstract

Purpose

The present study aims to investigate the inverse-thermocapillary effect in an evaporating thin liquid film of self-rewetting fluid, which is a dilute aqueous solution (DAS) of long-chain alcohol.

Design/methodology/approach

A long-wave evolution model modified for self-rewetting fluids is used to study the inverse thermocapillary characteristics of an evaporating thin liquid film. The flow attributed to the inverse thermocapillary action is manifested through the streamline plots and the evaporative heat transfer characteristics are quantified and analyzed.

Findings

The thermocapillary flow induced by the negative surface tension gradient drives the liquid from a low-surface-tension (high temperature) region to a high-surface-tension (low temperature) region, retarding the liquid circulation and the evaporation strength. The positive surface tension gradients of self-rewetting fluids induce inverse-thermocapillary flow. The results of different working fluids, namely, water, heptanol and DAS of heptanol, are examined and compared. The thermocapillary characteristic of a working fluid is significantly affected by the sign of the surface tension gradient and the inverse effect is profound at a high excess temperature. The inverse thermocapillary effect significantly enhances evaporation rates.

Originality/value

The current investigation on the inverse thermocapillary effect in a self-rewetting evaporating thin film liquid has not been attempted previously. This study provides insights on the hydrodynamic and thermal characteristics of thermocapillary evaporation of self-rewetting liquid, which give rise to significant thermal enhancement of the microscale phase-change heat transfer devices.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 4
Type: Research Article
ISSN: 0961-5539

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Article

Chuang Wei, Zhaoji Yu and Yongli Li

Online charitable giving is prevalent, and how to attract individuals' attention to donate is essential for charities. Little is known about the interaction effect of…

Abstract

Purpose

Online charitable giving is prevalent, and how to attract individuals' attention to donate is essential for charities. Little is known about the interaction effect of empathy (donor) and vulnerability (receiver) on donate intention. To bridge this gap, this study aims to investigate whether the influence of empathy on charitable giving would be moderated by receivers' vulnerability, and if yes, what is the mechanism.

Design/methodology/approach

Five experiments were conducted in the context of charitable giving with 1,303 participants to test our hypotheses.

Findings

When empathetic individuals confronted high vulnerable receivers, they were less likely to donate; otherwise, they were more likely to donate when they confronted low vulnerable receivers, and this interaction effect was mediated by concern about self.

Originality/value

The present research identifies a novel moderator of the effect of empathy on charitable giving and elucidates the underlying mechanism of concern about self. Based on these findings, the authors provide actionable implications for charities by demonstrating the interaction effect of empathy and vulnerability on donate intention.

Details

Internet Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1066-2243

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Article

David Shemmings

How might the profession of child protection social work be “future proofed”, i.e. remain intact and of value beyond its present existence? The paper aims to discuss this issue.

Abstract

Purpose

How might the profession of child protection social work be “future proofed”, i.e. remain intact and of value beyond its present existence? The paper aims to discuss this issue.

Design/methodology/approach

This is a discussion/“think piece” paper, in which the author argues that foregrounding the art and science of helping relationships is a way forward. Recognising and promoting the centrality of helping relationships is the direction in which the author believes (or is it hopes?) social work should head, because “more of the same” is not, in the author’s view, possible to sustain for much longer. Treading the well-worn but pot-holed path of box-ticking, endless risk assessment and perfunctory statutory visiting is likely to lead to continuing problems retaining social workers and, for those who do stay, increased burnout, compassion fatigue and secondary trauma, each of which interrupts or delays the development of working alliances with family members.

Findings

Growing reliance on thresholds and checklists to assess risk has served to increase referrals. As a result, social workers spend much of their time on triaging and filtering rather than working with the children and families that most need help and protection. Further, it is not what is in the practitioner’s toolkit that matters: rather, it is a defined set of personal skills and qualities that tips the balance to achieve lasting change. Thus, in order to “future proof” social work, we would do well to deepen our understanding of how helping relationships can lead to lasting change. Supporting social workers in this work is not just the responsibility of individual practitioners and their professional bodies, action also needs to be taken at governmental and managerial levels.

Originality/value

This is a discussion/“think piece”.

Details

Journal of Children's Services, vol. 12 no. 2-3
Type: Research Article
ISSN: 1746-6660

Keywords

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Article

Xiang Li, Kevin McDowell and Xiaotong Wang

This paper aims to describe librarians’ efforts in reaching out to international students through vernacular language videos at both the University of Colorado Boulder and…

Abstract

Purpose

This paper aims to describe librarians’ efforts in reaching out to international students through vernacular language videos at both the University of Colorado Boulder and the University of Oregon. The videos were created to help international students familiarize themselves with the new library environment and to stimulate their interest in the future exploration of library resources and services.

Design/methodology/approach

This paper discusses the challenges of providing effective support to international students in the early stages of their academic life in the USA, explains the rationale for using vernacular language videos as a means of outreach to international students, outlines the factors considered in designing the videos that helped achieve the outreach goals and reviews promotion needs and assessment methods for evaluating the effectiveness of the videos.

Findings

Using online videos in native languages as a means to extend the reach of the libraries to international students is seen as useful and practical. Feedback from students and library colleagues shows positive reaction to the videos and provides encouragement for further outreach efforts to international students.

Practical implications

The strategies and experiences detailed here are easily adaptable to other institutions of higher education committed to developing outreach programs for international students.

Originality/value

The novelty of this case study is the librarians’ sophisticated thinking in developing vernacular language videos as a means of outreach to international students. The video project presented in the paper can function as an inspiring example for institutions preparing for the expected large influx of international students.

Details

Reference Services Review, vol. 44 no. 3
Type: Research Article
ISSN: 0090-7324

Keywords

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Article

Akanksha Bedi and Aaron C.H. Schat

This study aims to examine the relations between service employee blame attributions in response to customer incivility and revenge desires and revenge behavior toward…

Abstract

Purpose

This study aims to examine the relations between service employee blame attributions in response to customer incivility and revenge desires and revenge behavior toward customers, and whether employee empathy moderated these relations.

Design/methodology/approach

The authors used survey data based on the critical incident method provided by a sample of 431 customer service employees.

Findings

The results suggested that blaming a customer was positively associated with desire for revenge and revenge behaviors against the uncivil customer. In addition, the authors found that blame was less strongly associated with desire for revenge when employees empathized with customers. Finally, the results show that an employee who desired revenge against the uncivil customer and who empathized with the customer was more – not less – likely to engage in revenge.

Practical implications

The authors found that when employees experience mistreatment from customers, it increases the likelihood that they will blame the offending customer and behave in ways that are contrary to their organization’s interests. The results suggest several points of intervention for organizations to more effectively respond to customer mistreatment.

Originality/value

In this study, the authors make one of the first attempts to investigate the relationships between service employee attributions of blame when they experience customer incivility, desire for revenge and customer-directed revenge behaviors. The authors also examined whether empathy moderates the relations between blame attribution, desires for revenge and revenge behavior.

Details

Journal of Services Marketing, vol. 31 no. 6
Type: Research Article
ISSN: 0887-6045

Keywords

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Article

Ariel Belasen and Alan T. Belasen

The purpose of this paper is to explore the extent to which improving doctor–patient communication (DPC) can address and alleviate many healthcare delivery inefficiencies.

Abstract

Purpose

The purpose of this paper is to explore the extent to which improving doctor–patient communication (DPC) can address and alleviate many healthcare delivery inefficiencies.

Design/methodology/approach

The authors survey causes and costs of miscommunication including perceptual gaps between how physicians believe they perform their communicative duties vs how patients feel and highlight thresholds such as the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) used by hospitals to identify health outcomes and improve DPC.

Findings

The authors find that DPC correlates with better and more accurate care as well as with more satisfied patients. The authors utilize an assessment framework, doctor–patient communication assessment (DPCA), empirically measuring the effectiveness of DPC. While patient care is sometimes viewed as purely technical, there is evidence that DPC strongly predicts clinical outcomes as well as patients’ overall ratings of hospitals.

Research limitations/implications

More research is needed to extend our understanding of the impact of the DPC on the overall HCAHPS ratings of hospitals. The authors think that researchers should adopt a qualitative method (e.g. content analysis) for analyzing DPC discourse.

Practical implications

When a sufficient amount of DPCA training is initiated, a norming procedure could be developed and a database may be employed to demonstrate training program’s efficacy, a critical factor in establishing the credibility of the measurement program and nurturing support for its use.

Originality/value

The authors highlight clinical and operational issues as well as costs associated with miscommunication and the need to use metrics such as HCAHPS that allow consumers to see how hospitals differ on specific characteristics.

Details

Journal of Health Organization and Management, vol. 32 no. 7
Type: Research Article
ISSN: 1477-7266

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Article

Xiongfei Cao, Mingchuan Gong, Lingling Yu and Bao Dai

The problematic use of social media progressively worsens among a large proportion of users. However, the theory-driven investigation into social media addiction behavior…

Abstract

Purpose

The problematic use of social media progressively worsens among a large proportion of users. However, the theory-driven investigation into social media addiction behavior remains far from adequate. Among the countable information system studies on the dark side of social media, the focus lies on users' subjective feelings and perceived value. The technical features of the social media platform have been ignored. Accordingly, this study explores the formation of social media addiction considering the perspectives of users and social media per se on the basis of extended motivational framework and attachment theory.

Design/methodology/approach

This study investigates the formation of social media addiction with particular focus on WeChat. A field survey with 505 subjects of WeChat users was conducted to investigate the research model.

Findings

Results demonstrate that social media addiction is determined by individuals' emotional and functional attachment to the platform. These attachments are in turn influenced by motivational (perceived enjoyment and social interaction) and technical (informational support, system quality and personalization) factors.

Originality/value

First, this study explains the underlying mechanism of how users develop social media addiction. Second, it highlights the importance of users' motivations and emotional dependence at this point. It also focuses on the technical system of the platform that plays a key role in the formation of addictive usage behavior. Third, it extends attachment theory to the context of social media addictive behavior.

Details

Internet Research, vol. 30 no. 4
Type: Research Article
ISSN: 1066-2243

Keywords

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Article

D. Bertrand, P. François, J.‐L. Bosson, J. Fauconnier and G. Weil

The quality of discharge letters has been evaluated in order to initiate a process of improved communications between the hospital and general practitioners. From each of…

Abstract

The quality of discharge letters has been evaluated in order to initiate a process of improved communications between the hospital and general practitioners. From each of 37 volunteer clinical departments of a French university hospital, a random sample of 30 stays was selected among the hospitalisations for one year. The quality of discharge letters was assessed according to recipients’ needs and to French legislation. In total, 1,024 medical records were relevant and were analysed. This study showed deficiencies in management of discharge letters in the hospital. It constitutes the first step of a quality improvement process based on the awareness of concerned actors through information feedback and the follow‐up of specific indicators.

Details

International Journal of Health Care Quality Assurance, vol. 11 no. 3
Type: Research Article
ISSN: 0952-6862

Keywords

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