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Article
Publication date: 31 July 2009

E. Asua, V. Etxebarria, A. Garcia and J. Feuchtwange

The purpose of this paper is to focus on the use of a nickel‐titanium (nitinol) shape memory alloy (SMA) wire (capable of showing strains of up to 8 per cent) as the active…

Abstract

Purpose

The purpose of this paper is to focus on the use of a nickel‐titanium (nitinol) shape memory alloy (SMA) wire (capable of showing strains of up to 8 per cent) as the active element that drives a flexible and lightweight micropositioning actuator. The purpose of this paper is to finely control the wire contraction, and as a result, the deflection of the actuator, with micrometric accuracies.

Design/methodology/approach

Different experimental platforms are built, all of them using the same nitinol wire as the active element. In all cases a current is applied to the wire to heat it up using the Joule effect, and in doing so cause the wire to transform from the martensite into the austenite. This phase transition has a non‐linear and hysteretic nature, so, finely controling wire's position requires a non trivial control strategy. A neural network used to compensate the hysteretic behaviour of the wire combined with proportional‐integral with antiwindup control strategy is implemented. Control experiments are carried out on a light robot gripper and on a single‐fingered experimental device.

Findings

It is found that the single‐fingered device could be used to better analyze the behaviour of the gripper. It is also found that the accuracy obtainable strongly depended on the position sensor used for the feedback, ranging from 3 μm for an linear variable differential transformer sensor to 30 μm for strain gauges mounted on the “fingers” of the grip.

Originality/value

This paper shows the viability of using SMA‐based actuators for lightweight applications, controllable with micrometric accuracies, without the need to place an extraordinarily large burden on the control system.

Details

Assembly Automation, vol. 29 no. 3
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 14 November 2019

Eric L. Swan, Andrew J. Dahl and James W. Peltier

Consumers have increased access to digital health tools such as social media, websites and marketer-controlled platforms for information sharing. Telemedicine (TM) represents an…

1986

Abstract

Purpose

Consumers have increased access to digital health tools such as social media, websites and marketer-controlled platforms for information sharing. Telemedicine (TM) represents an emerging omni-channel touchpoint for consumers to exchange information and inform health decision-making at a time and place of their choosing. While TM offers great potential, consumer adoption has been slower than expected. This paper aims to investigate attitudinal factors that influence adoption and usage of TM within consumers’ omni-channel decision-making environment.

Design/methodology/approach

Surveys from 869 patients were analyzed using multiple linear regression to examine the relationships between health decision-making, TM access benefits and omni-channel touchpoints (social media, website and internal health digital channels usage) on TM usage likelihood.

Findings

Attitudinal constructs related to TM’s benefits including access and health decision-making have the strongest impact on future TM usage. The study also empirically demonstrates a link between consumers’ omni-channel information seeking and TM usage.

Research limitations/implications

Increasing consumers’ involvement across omni-channel touchpoints has an additive effect on perceived benefits for engaging consumers in using digital offerings like TM. Future research is needed that examines the interrelationships on consumers’ health decision-making across generational cohorts and the post-adoption effects of digital service offerings.

Practical implications

Omni-channel touchpoints such as TM provide new opportunities to enhance shared decision-making. However, marketers need to adopt strategies that accommodate consumers’ evolving omni-channel preferences for access and information exchange to synergize digital service offerings with interpersonal touchpoints.

Originality/value

This study integrates shared decision-making, technology acceptance and omni-channel marketing literature to explore TM acceptance and usage within the context of consumers’ omni-channel decision process.

Details

Journal of Research in Interactive Marketing, vol. 13 no. 4
Type: Research Article
ISSN: 2040-7122

Keywords

Article
Publication date: 8 April 2019

Yilu Gong, Tantan Shao, Xiuming Wang, Xin Zhang, Zhijuan Sun and Lijun Chen

Fluorine and silicon materials have received the keen attention of many researchers because of their water repellency and low surface free energy. The purpose this study was to…

Abstract

Purpose

Fluorine and silicon materials have received the keen attention of many researchers because of their water repellency and low surface free energy. The purpose this study was to prepare vinyl acetate (VAc)-vinyl ester of neodecanoic acid (VeoVa 10) copolymer latex modified with fluorine and silicone monomer, which is emulsified with the novel surfactants of disodium laureth sulfosuccinate (MES) and octylphenol polyoxyethylene ether (OP-10).

Design/methodology/approach

A series of modified latices containing fluorine-silicon have been prepared by semi-continuous seeded emulsion polymerisation of mixed monomers of VAc, VeoVa10, hexafluorobutylmethacrylate (HFMA) and vinyltriethoxysilane (VTES) and emulsified by novel surfactants of MES and OP-10.

Findings

The optimum conditions for preparing the modified latex is as follows: the amount of the surfactant was 4.0 Wt.% and the mass ratio of the anionic and nonionic surfactant was 3:1; the dosage of initiator was 0.4 Wt.% and the mass ratio of the main monomer was 3:1; and the amounts of VTES and HFMA were 2.0 and 6.0 Wt.%, respectively. In comparison with the conventional latex, the hydrophobicity of latex film was improved further.

Originality/value

The modified p (VAC-VeoVa) latex is prepared via semi-continuous seeded emulsion polymerisation, which is emulsified with the novel mixed surfactants of MES and OP-10. There are two main innovations. One is that the novel p (VAC-VeoVa) latex containing fluorine-silicon is prepared successfully. The other is that the emulsifier is composed of the novel mixed surfactants of MES and OP-10.

Article
Publication date: 5 May 2022

Adel Oubelaid, Nabil Taib and Toufik Rekioua

The purpose of this paper is the investigation of a new coordinated switching strategy to improve the transient performance of a fuel cell (FC)- supercapacitor (SC) electric…

Abstract

Purpose

The purpose of this paper is the investigation of a new coordinated switching strategy to improve the transient performance of a fuel cell (FC)- supercapacitor (SC) electric vehicle. The proposed switching strategy protects FCs from large currents drawn during abrupt power variations. Furthermore, it compensates the poor FC transient response and suppresses the transient ripples occurring during power source switching instants.

Design/methodology/approach

Coordinated power source switching is achieved using three different transition functions. Vehicle model is fractioned into computational and console subsystems for its simulation using real time (RT) LAB simulator. Blocs containing coordination switching strategy, power sources models and their power electronics interface are placed in the computational subsystem that will be executed, in RT, on one of real time laboratory simulator central processing unit cores.

Findings

Coordination switching strategy resulted in reducing transient power ripples by 90% and direct current (DC) bus voltage fluctuations by 50%. Switching through transition functions compensated the difference between FC and SC transient responses responsible for transient power ripples. Among the three proposed transition functions, linear transition function resulted in the best transient performances.

Originality/value

The proposed coordinated switching strategy allows the control of the switching period duration. Furthermore, it enables the choice of adequate transition functions that fit the dynamics of power sources undergoing transition. Also, the proposed switching technique is simple and does not require the knowledge of system parameters or the complex control models.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 41 no. 5
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 19 October 2023

Rajat Kumar Behera, Pradip Kumar Bala, Prabin Kumar Panigrahi and Shilpee A. Dasgupta

Despite technological advancements to enhance patient health, the risks of not discovering the correct interactions and trends in digital health are high. Hence, a careful policy…

Abstract

Purpose

Despite technological advancements to enhance patient health, the risks of not discovering the correct interactions and trends in digital health are high. Hence, a careful policy is required for health coverage tailored to needs and capacity. Therefore, this study aims to explore the adoption of a cognitive computing decision support system (CCDSS) in the assessment of health-care policymaking and validates it by extending the unified theory of acceptance and use of technology model.

Design/methodology/approach

A survey was conducted to collect data from different stakeholders, referred to as the 4Ps, namely, patients, providers, payors and policymakers. Structural equation modelling and one-way ANOVA were used to analyse the data.

Findings

The result reveals that the behavioural insight of policymakers towards the assessment of health-care policymaking is based on automatic and reflective systems. Investments in CCDSS for policymaking assessment have the potential to produce rational outcomes. CCDSS, built with quality procedures, can validate whether breastfeeding-supporting policies are mother-friendly.

Research limitations/implications

Health-care policies are used by lawmakers to safeguard and improve public health, but it has always been a challenge. With the adoption of CCDSS, the overall goal of health-care policymaking can achieve better quality standards and improve the design of policymaking.

Originality/value

This study drew attention to how CCDSS as a technology enabler can drive health-care policymaking assessment for each stage and how the technology enabler can help the 4Ps of health-care gain insight into the benefits and potential value of CCDSS by demonstrating the breastfeeding supporting policy.

Details

Journal of Systems and Information Technology, vol. 25 no. 4
Type: Research Article
ISSN: 1328-7265

Keywords

Article
Publication date: 3 April 2018

Jamil Razmak and Charles Bélanger

The purpose of this paper is to statistically measure (quantify) how a sample of Canadians perceives the usability of electronic personal health records (PHRs) and, in the…

2000

Abstract

Purpose

The purpose of this paper is to statistically measure (quantify) how a sample of Canadians perceives the usability of electronic personal health records (PHRs) and, in the process, to increase Canadian patients’ awareness of PHRs and improve physicians’ confidence in their patients’ ability to manage their own health information through PHRs.

Design/methodology/approach

The authors surveyed 325 Canadian patients living in Northern Ontario to assess a research model consisting of seven perceptions of PHR systems used to manage personal health information electronically, and to assess their perceived ability to use PHR systems. The survey questions were adapted from the 2014 National Physician Survey in Canada. The authors compared the patients’ results with physicians’ own perceptions of their patients’ ability to use PHR systems.

Findings

First, there was a positive relationship between surveyed patients’ prior experiences, needs, values, and their attitude toward adopting the PHR system. Second, how patients saw a PHR system’s user-friendliness was the strongest predictor of how useful they considered it would be. Finally, of the 243 physician respondents, 90.3 percent believed their patients would not be able to manage their own e-health information via a PHR system, but 54.8 percent of the 325 patient respondents indicated they would be able to do so.

Originality/value

This study is unique in that the authors know of no other Canadian study that purports to predict, using the technology acceptance model factors, people’s attitudes toward adopting a PHR system. As well, this is the first Canadian study to compare the perspectives of healthcare providers and their patients on e-health applications.

Article
Publication date: 5 July 2022

Vess Stamenova, Suman Budhwani, Charlene Soobiah, Jamie Fujioka, Rumaisa Khan, Rebecca Liu, Ilana Halperin, R. Sacha Bhatia and Laura Desveaux

The purpose of this study is to understand virtual care use (e.g. telephone and video visits) during the COVID-19 pandemic across three hospital-based ambulatory clinics (i.e

Abstract

Purpose

The purpose of this study is to understand virtual care use (e.g. telephone and video visits) during the COVID-19 pandemic across three hospital-based ambulatory clinics (i.e. mental health, renal and respiratory care) and to describe associated patient and provider experiences.

Design/methodology/approach

A mixed-methods convergent study was conducted including quantitative electronic medical records data on virtual care use, electronic surveys assessing domains of experience (e.g. satisfaction, acceptance and technology use) among patient and providers and semi-structured interviews exploring the associated barriers and facilitators of virtual care adoption.

Findings

Virtual care adoption rates and relative modality use (telephone vs video) varied across specialty clinics. Mental health clinics) showed the greatest use of virtual care and greater use of video over telephone, as compared to renal and respiratory care, where telephone was used almost exclusively. Patients and providers reported an overall good satisfaction and acceptance of virtual care (60–72%) across clinics, but commonly observed barriers (technical problems, behavioral adaptations needed and inequity) persisted. Good value propositions, tech support and the presence of early adopters who can support others in workflow re-design and highlight value propositions of virtual care were listed as adoption facilitators.

Originality/value

The study provides a unique opportunity to compare the rate of virtual care adoption before and during the COVID-19 pandemic across distinct specialties that operate within the same organizational and political setting. This study showed that the nature of the condition (e.g. mental health conditions) and the characteristics of the users (e.g. younger patients) may drive models of care with higher rate of video use. Focusing on removing common barriers, like providing tech support and ensuring equitable access to patients, continues to be important even in the context of high virtual care adoption rates during the pandemic.

Details

Journal of Integrated Care, vol. 30 no. 4
Type: Research Article
ISSN: 1476-9018

Keywords

Article
Publication date: 3 February 2023

Mohammad Zahedul Alam and Liza Khanam

The purpose of this study was to explore the factors affecting adoption of mHealth services among the older women in Bangladesh. As this portion of the total population is rapidly…

Abstract

Purpose

The purpose of this study was to explore the factors affecting adoption of mHealth services among the older women in Bangladesh. As this portion of the total population is rapidly increasing in Dhaka City.

Design/methodology/approach

Using the technology acceptance model as a theoretical framework, this study introduces perceived reliability, price value and technology anxiety as new factor reflecting the user’s reliability, beliefs and monetary concerns in the acceptance of mHealth services. A structured survey was conducted to collect the required data from convenience sampling of 271 mHealth end users from Dhaka city in Bangladesh.

Findings

The study confirmed that perceived usefulness, perceived reliability; price value and technology anxiety had a significant impact on mHealth adoption. Ease of use did not influence on the adoption of mHealth services.

Originality/value

To the best of the authors’ knowledge, this study is one of the first to investigate the determinant of mHealth adoption among older Women. Moreover, the insights from this study could benefit mHealth services providers and policymakers in implementing more effective marketing strategies to increase the acceptability of mHealth services.

Details

International Journal of Pharmaceutical and Healthcare Marketing, vol. 17 no. 1
Type: Research Article
ISSN: 1750-6123

Keywords

Article
Publication date: 19 May 2021

Zapan Barua and Adita Barua

The COVID-19 pandemic has created a devastating effect on public health. As “social distance” is a highly effective preventive measure of this pandemic, close contact between a…

Abstract

Purpose

The COVID-19 pandemic has created a devastating effect on public health. As “social distance” is a highly effective preventive measure of this pandemic, close contact between a patient and physician is strongly discouraged where possible. Consequently, mobile health (mHealth) technology is taking its momentum to fulfil this gap. The purpose of this study is, therefore, to empirically investigate the moderating as well as the direct role of situational constraint and health consciousness in the unified theory of acceptance and use of technology (UTAUT) constructs to understand the adoption and use behavior of mHealth care services amid pandemic.

Design/methodology/approach

Data were collected from existing mHealth users using an online survey questionnaire in Bangladesh. SmartPLS 3.0 and SPSS 23.0 were used for partial least squares-structural equation modeling.

Findings

Situational constraint and health consciousness both have strong direct positive effects on both behavioral intention (in all models) and use behavior (in Models 2 and 3). Further, this study revealed that effort expectancy remains insignificant in both direct and interaction effects whereas social influence becomes insignificant in interaction effects from direct significant effect (Models 1 and 2). Besides, the study reported that the relationship between behavioral intention and use behavior is moderated by situational constraint.

Originality/value

To the best of the authors’ knowledge, this study is the first in terms of mHealth empirical investigation considering the current pandemic situation. The incorporation of the situational constraint and health consciousness into the UTAUT model provides a holistic framework to understand the influence of the adoption and use behavior of mHealth amid pandemic.

Details

Journal of Enabling Technologies, vol. 15 no. 1
Type: Research Article
ISSN: 2398-6263

Keywords

Article
Publication date: 29 January 2020

Shivinder Nijjer and Sahil Raj

The high rate of internet penetration has led to the proliferation of social media (SM) use, even at the workplace, including academia. This research attempts to develop a…

Abstract

Purpose

The high rate of internet penetration has led to the proliferation of social media (SM) use, even at the workplace, including academia. This research attempts to develop a topology and thereby determine the dominant use motive for faculty’s use of SM.

Design/methodology/approach

In this two-part study, a two-stage research design has been adopted for topology development based on the application of Uses and Gratifications Theory. In the second part, the Technology Acceptance Model is applied to discern the dominant motive for SM use in academia.

Findings

The work is able to develop a seven-item topology, conforming to the basic three use motives, namely, hedonic, utilitarian and social. The work shows faculty attach more value to the instrumental utility of SM, while the hedonic function is also significant.

Practical implications

Discerning dominant motive implies that SM use at the workplace should not be banned, rather effective regulated use will instil the faculty to enhance work outcomes. The conceptualisation of topology for SM use in academia at the workplace can aid in designing an effective organisation policy, and design of an internal SM platform.

Originality/value

The study is unique towards topology development for academic faculty and has many important implications for management and academia, especially towards policy design for SM use at the workplace.

Details

Journal of Information, Communication and Ethics in Society, vol. 18 no. 2
Type: Research Article
ISSN: 1477-996X

Keywords

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