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Article
Publication date: 15 July 2019

R.R. Kumar, P.K. Karsh, Vaishali , K.M. Pandey and S. Dey

The purpose of this paper is to investigate the first three stochastic natural frequencies of skewed sandwich plates, considering uncertain system parameters. To conduct…

Abstract

Purpose

The purpose of this paper is to investigate the first three stochastic natural frequencies of skewed sandwich plates, considering uncertain system parameters. To conduct the sensitivity analysis for checking the criticality of input parameters.

Design/methodology/approach

The theoretical formulation is developed based on higher-order-zigzag theory in accordance with the radial basis function (RBF) and stochastic finite element (FE) model. A cubic function is considered for in-plane displacement over thickness while a quadratic function is considered for transverse displacement within the core and remains constant in the facesheet. RBF is used as a surrogate model to achieve computational efficiency and accuracy. In the present study, the individual and combined effect of ply-orientation angle, skew angle, number of lamina, core thickness and material properties are considered for natural frequency analysis of sandwich plates.

Findings

Results presented in this paper illustrates that the skewness in the sandwich plate significantly affects the global dynamic behaviour of the structure. RBF surrogate model coupled with stochastic FE approach significantly reduced the computational time (more than 1/18 times) compared to direct Monte Carlo simulation approach.

Originality/value

The stochastic results for dynamic stability of sandwich plates show that the inevitable source uncertainties present in the input parameters result in significant variation from the deterministic value demonstrates the need for inclusive design paradigm considering stochastic effects. The present paper comprehensively establishes a generalized new RBF-based FE approach for efficient stochastic analysis, which can be applicable to other complex structures too.

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Article
Publication date: 30 April 2020

Lei Wang, Chuang Xiong and Qinghe Shi

Considering that uncertain factors widely exist in engineering practice, an adaptive collocation method (ACM) is developed for the structural fuzzy uncertainty analysis.

Abstract

Purpose

Considering that uncertain factors widely exist in engineering practice, an adaptive collocation method (ACM) is developed for the structural fuzzy uncertainty analysis.

Design/methodology/approach

ACM arranges points in the axis of the membership adaptively. Through the adaptive collocation procedure, ACM can arrange more points in the axis of the membership where the membership function changes sharply and fewer points in the axis of the membership where the membership function changes slowly. At each point arranged in the axis of the membership, the level-cut strategy is used to obtain the cut-level interval of the uncertain variables; besides, the vertex method and the Chebyshev interval uncertainty analysis method are used to conduct the cut-level interval uncertainty analysis.

Findings

The proposed ACM has a high accuracy without too much additional computational efforts.

Originality/value

A novel ACM is developed for the structural fuzzy uncertainty analysis.

Details

Engineering Computations, vol. 37 no. 9
Type: Research Article
ISSN: 0264-4401

Keywords

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Book part
Publication date: 24 October 2019

Myrtede Alfred, Ken Catchpole, Emily Huffer, Kevin Taafe and Larry Fredendall

Achieving reliable instrument reprocessing requires finding the right balance among cost, productivity, and safety. However, there have been few attempts to…

Abstract

Achieving reliable instrument reprocessing requires finding the right balance among cost, productivity, and safety. However, there have been few attempts to comprehensively examine sterile processing department (SPD) work systems. We considered an SPD as an example of a socio-technical system – where people, tools, technologies, the work environment, and the organization mutually interact – and applied work systems analysis (WSA) to provide a framework for future intervention and improvement.

The study was conducted at two SPD facilities at a 700-bed academic medical center servicing 56 onsite clinics, 31 operating rooms (ORs), and nine ambulatory centers. Process maps, task analyses, abstraction hierarchies, and variance matrices were developed through direct observations of reprocessing work and staff interviews and iteratively refined based on feedback from an expert group composed of eight staff from SPD, infection control, performance improvement, quality and safety, and perioperative services. Performance sampling conducted focused on specific challenges observed, interruptions during case cart preparation, and analysis of tray defect data from administrative databases.

Across five main sterilization tasks (prepare load, perform double-checks, run sterilizers, place trays in cooling, and test the biological indicator), variance analysis identified 16 failures created by 21 performance shaping factors (PSFs), leading to nine different outcome variations. Case cart preparation involved three main tasks: storing trays, picking cases, and prioritizing trays. Variance analysis for case cart preparation identified 11 different failures, 16 different PSFs, and seven different outcomes. Approximately 1% of cases had a tray with a sterilization or case cart preparation defect and 13.5 interruptions per hour were noted during case cart preparation.

While highly dependent upon the individual skills of the sterile processing technicians, making the sterilization process less complex and more visible, managing interruptions during case cart preparation, improving communication with the OR, and improving workspace and technology design could enhance performance in instrument reprocessing.

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Article
Publication date: 1 October 2014

Taesoo Ahn, Young Ik Suh, Jin Kyun Lee and Paul M Pedersen

The purpose of this study was to examine purchasing intentions in online sports ticketing websites. Based on previous research related to business-to-consumer (B2C…

Abstract

The purpose of this study was to examine purchasing intentions in online sports ticketing websites. Based on previous research related to business-to-consumer (B2C) e-commerce, this study developed a conceptual model to test the effect of perceived risk, trust and the Technology Acceptance Model (TAM) on purchase intentions in online secondary ticket websites. College students (N = 251) from the northeastern region of the United States were chosen as the sample. Structural Equation Modeling (SEM) was used to investigate the proposed relationships among four major components (i.e. perceived risk, trust, TAM and behavioural intention). The results showed that there were positive effects of key TAM constructs (i.e. perceived usefulness and ease of use) and trust on purchasing intention, but perceived risk was not a significant indicator of purchase intention.

Details

International Journal of Sports Marketing and Sponsorship, vol. 16 no. 1
Type: Research Article
ISSN: 1464-6668

Keywords

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Book part
Publication date: 21 November 2016

Kou Murayama, Keise Izuma, Ryuta Aoki and Kenji Matsumoto

Studies in psychology have long revealed that making personal choice involves multiple motivational consequences. It has only been recent, however, that the literature on…

Abstract

Studies in psychology have long revealed that making personal choice involves multiple motivational consequences. It has only been recent, however, that the literature on neuroscience started to examine the neural underpinnings of personal choice and motivation. This chapter reviews this sparse, but emergent, body of neuroscientific literature to address possible neural correlates underlying personal choice. By conducting the review, we encourage future systematic research programs that address this topic under the new realm of “autonomy neuroscience.” The chapter especially focused on the following motivational aspects: (i) personal choice is rewarding, (ii) personal choice shapes preference, (iii) personal choice changes the perception of outcomes, and (iv) personal choice facilitates motivation and performance. The reviewed work highlighted different aspects of personal choice, but indicated some overlapping brain areas – the striatum and the ventromedial prefrontal cortex (vmPFC) – which may play a critical role in motivational processes elicited by personal choice.

Details

Recent Developments in Neuroscience Research on Human Motivation
Type: Book
ISBN: 978-1-78635-474-7

Keywords

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Book part
Publication date: 9 December 2013

Daphne P. Berry

This paper examines job satisfaction and participation in decision making in three home health aide facilities with different organizational structures (worker-owned…

Abstract

Purpose

This paper examines job satisfaction and participation in decision making in three home health aide facilities with different organizational structures (worker-owned for-profit, for-profit with no participation or ownership by workers, and nonprofit).

Design/methodology/approach

More than 600 surveys were completed by home health aides across the three facilities. The author also engaged in participant observation during training sessions and other meetings and conducted a small number of interviews with caregivers and agency management.

Findings

Home health aides at the worker-owned, participative decision making organization were significantly more satisfied with their jobs than those at the other agencies. Results for the other agencies were not significantly distinguishable from one another.

Research limitations/implications

This study involved respondents from one of each type of business. A study across several of each type of organization would allow more focus on the effects of the structural characteristics of the organizations.

Practical implications

In the United States, the work that home health aides perform provides a valuable service to society. On behalf of caregivers and those for whom they provide care, conditions of the work need improvement. If participative democratic workplaces provide better outcomes, they should receive more attention from lawmakers, the business community, and researchers.

Social implications

This research highlights the working conditions of the people (primarily women) who perform this work. The poor compensation received is a reminder of inequality in opportunity for some workers and of the value placed on this type of caring labor.

Originality/value

This research is unique in its focus on work environment and outcomes in home health care across nonprofit, for-profit, and worker-owned for-profit organizations. The findings of different job satisfaction outcomes from the others in the worker-owned organization and similar outcomes in the nonprofit and conventional for-profit organizations are also unique.

Details

Sharing Ownership, Profits, and Decision-Making in the 21st Century
Type: Book
ISBN: 978-1-78190-750-4

Keywords

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Book part
Publication date: 24 October 2019

Irene Kobler, Alfred Angerer and David Schwappach

Since the publication of the report “To Err Is Human: Building a Safer Health System” by the US Institute of Medicine in 2000, much has changed with regard to patient…

Abstract

Since the publication of the report “To Err Is Human: Building a Safer Health System” by the US Institute of Medicine in 2000, much has changed with regard to patient safety. Many of the more recent initiatives to improve patient safety target the behavior of health care staff (e.g., training, double-checking procedures, and standard operating procedures). System-based interventions have so far received less attention, even though they produce more substantial improvements, being less dependent on individuals’ behavior. One type of system-based intervention that can benefit patient safety involves improvements to hospital design. Given that people’s working environments affect their behavior, good design at a systemic level not only enables staff to work more efficiently; it can also prevent errors and mishaps, which can have serious consequences for patients. While an increasing number of studies have demonstrated the effect of hospital design on patient safety, this knowledge is not easily accessible to clinicians, practitioners, risk managers, and other decision-makers, such as designers and architects of health care facilities. This is why the Swiss Patient Safety Foundation launched its project, “More Patient Safety by Design: Systemic Approaches for Hospitals,” which is presented in this chapter.

Details

Structural Approaches to Address Issues in Patient Safety
Type: Book
ISBN: 978-1-83867-085-6

Keywords

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Book part
Publication date: 4 July 2019

Erdoğan Koç, Çağatan Taşkın and Hakan Boz

Consumers are faced with many new products. In almost every product category it is seen that there are more alternatives than provided in previous years. This situation…

Abstract

Consumers are faced with many new products. In almost every product category it is seen that there are more alternatives than provided in previous years. This situation may cause consumers to feel uncomfortable/uncertain, especially about new products. Therefore, since they perceive this uncertainty, customers want to be in control. Control is one of the ways to help customers to decide on perceived risky situations.

The main purpose of the study is to explain the effects of the risk and control drive on consumer behavior and determine how businesses reduce the risk that consumers feel.

It is critical for enterprises to increase their brand awareness in order to reduce consumers’ risk perceptions and increase their controls (cognitive, behavioral, and decision) during purchasing decisions. Also, it will be useful for them to focus on activities increasing brand loyalty. They can especially carry out marketing activities allowing consumers to try new products or providing money back guarantees. Moreover, in order to reduce the risk perception and increase control by the customers, making the promotional contents of the product understandable and simple without hidden factors will contribute in a positive way.

Details

Contemporary Issues in Behavioral Finance
Type: Book
ISBN: 978-1-78769-881-9

Keywords

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Article
Publication date: 4 April 2016

Dipanjan Goswami, Sakun Boon-Itt, Neera Jain and D.R. Agarwal

The quality and reliability of medical communication for branded drug adoption is extremely critical, not only for safeguarding patient interests but also for ensuring…

Abstract

Purpose

The quality and reliability of medical communication for branded drug adoption is extremely critical, not only for safeguarding patient interests but also for ensuring successful investments by multinational pharmaceutical firms. This paper predicts doctors’ prescribing intentions based on communication relationship among factors for late entrant branded drugs, compared with pioneering brand choice, for treating chronic diseases such as hypertension.

Design/methodology/approach

The constructs were validated with structural equation model for a sample set of 151 doctors from private hospitals in the National Capital Region of India.

Findings

This research reveals communication drivers and draws on theory to suggest that the doctor’s behavioural prescription intentions, subject to social influence from their colleagues, leads to lower adoption responses.

Research limitations/implications

Given that limitations on sample size are often unavoidable, this study reveals that, due to the availability of substituting brands, alternate therapeutic routes and lack of availability of a practical guide for prescription, a communication model needs to be developed and validated.

Practical implications

Furthermore, managers of pharmaceutical firms should differentiate between the effects of direct and indirect communication–integration efforts for minimizing uncertainty in drug adoption in the context of the fragmented and unpredictable Indian market.

Originality/value

A late entrant may lose its dominant market share to alternate brands from other suppliers due to communication gaps in an unstructured market, leading to low adoption intentions. The study provides business theorists, drug marketers and health-care professionals with unique insights into specific communication drivers of prescribing decisions, aimed at ensuring reliable and appropriate drug adoption in Indian markets.

Details

International Journal of Pharmaceutical and Healthcare Marketing, vol. 10 no. 1
Type: Research Article
ISSN: 1750-6123

Keywords

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Book part
Publication date: 24 October 2019

Anna Grome, Elizabeth Lerner Papautsky, Beth Crandall and James Greenberg

Only recently has physical space design become more widely recognized as playing a critical role in delivery of care, with an emerging body of literature on the…

Abstract

Only recently has physical space design become more widely recognized as playing a critical role in delivery of care, with an emerging body of literature on the application of human factors approaches to design and evaluation. This chapter describes the use of human factors approaches to develop and conduct an evaluation of a proposed Neonatal Intensive Care Unit redesign in a Midwestern children’s hospital. Methods included observations and knowledge elicitation from stakeholders to characterize their goals, challenges, and needs. This characterization is integral to informing the design of user-centered solutions, including physical space design. We also describe an approach to evaluating the proposed design that yielded actionable recommendations specific to hospital-driven design goals.

Details

Structural Approaches to Address Issues in Patient Safety
Type: Book
ISBN: 978-1-83867-085-6

Keywords

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