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Article
Publication date: 14 January 2014

Timothy J. Horn, Ola L.A. Harrysson, Harvey A. West II, Jeffrey P. Little and Denis J. Marcellin-Little

The aim of this study is to describe an improved experimental substrate for the mechanical testing of patient-specific implants fabricated using direct metal additive…

Abstract

Purpose

The aim of this study is to describe an improved experimental substrate for the mechanical testing of patient-specific implants fabricated using direct metal additive manufacturing processes. This method reduces variability and sample size requirements and addresses the importance of geometry at the bone/implant interface.

Design/methodology/approach

Short-fiber glass/resin materials for cortical bone and polyurethane foam materials for cancellous bone were evaluated using standard tensile coupons. A method for fabricating bone analogs with patient-specific geometries using rapid tooling is presented. Bone analogs of a canine radius were fabricated and compared to cadaveric specimens in several biomechanical tests as validation.

Findings

The analog materials exhibit a tensile modulus that falls within the range of expected values for cortical and cancellous bone. The tensile properties of the cortical bone analog vary with fiber loading. The canine radius models exhibited similar mechanical properties to the cadaveric specimens with a reduced variability.

Research limitations/implications

Additional replications involving different bone geometries, types of bone and/or implants are required for a full validation. Further, the materials used here are only intended to mimic the mechanical properties of bone on a macro scale within a relatively narrow range. These analog models have not been shown to address the complex microscopic or viscoelastic behavior of bone in the present study.

Originality/value

Scientific data on the formulation and fabrication of bone analogs are absent from the literature. The literature also lacks an experimental platform that matches patient-specific implant/bone geometries at the bone implant interface.

Details

Rapid Prototyping Journal, vol. 20 no. 1
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 1 April 2003

Georgios I. Zekos

Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some…

91346

Abstract

Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.

Details

Managerial Law, vol. 45 no. 1/2
Type: Research Article
ISSN: 0309-0558

Keywords

Article
Publication date: 1 January 2003

Donald P. Roy and Timothy R. Graeff

Perceived fit between a sponsoring brand and an event is considered to be a key sponsorship requirement, but little is known about the variables that are related to perceived fit…

Abstract

Perceived fit between a sponsoring brand and an event is considered to be a key sponsorship requirement, but little is known about the variables that are related to perceived fit. Coca - Cola's sponsorship of the 2002 Salt Lake City Winter Olympics is examined to assess relationships between attitude toward the brand, attitude toward the event, and attitude toward sponsorships and brand/event fit. A telephone survey was used to contact 448 consumers. Results indicate that attitude toward the brand is moderately related to brand/event fit and attitude toward sponsorships is significantly related to brand/event fit.

Details

International Journal of Sports Marketing and Sponsorship, vol. 4 no. 4
Type: Research Article
ISSN: 1464-6668

Keywords

Article
Publication date: 7 August 2017

Xiu Cravens, Timothy A. Drake, Ellen Goldring and Patrick Schuermann

The purpose of this paper is to study the viability of implementing a protocol-guided model designed to provide structure and focus for teacher collaboration from Shanghai in…

Abstract

Purpose

The purpose of this paper is to study the viability of implementing a protocol-guided model designed to provide structure and focus for teacher collaboration from Shanghai in today’s US public schools. The authors examine whether the new model, Teacher Peer Excellence Group (TPEG), fosters the desired key features of productive communities of practice where teachers can jointly construct, transform, preserve, and continuously deepen the meaning of effective teaching. The authors also explore the extent to which existing school conditions – principal instructional leadership, trust, teacher efficacy, and teachers’ sense of school-wide professional community – enable or moderate the desired outcomes.

Design/methodology/approach

Data for this paper are drawn from a series of surveys administered to teachers from 24 pilot schools in six school districts over two school years. Descriptive and multilevel modeling analyses are conducted.

Findings

The findings provide encouraging evidence that, given sufficient support and guidance, teachers report higher levels of engagement in deprivatized practice and instructional collaboration. These findings also hold after controlling for key enabling conditions and school characteristics.

Social implications

The TPEG approach challenges school leaders to take on the responsibilities of helping teachers make their practice public, sharable, and better – three critical objectives in the shift to develop the profession of teaching.

Originality/value

The indication of TPEG model’s positive impact on strengthening the features of communities of practice in selected public schools provides the impetus for further efforts in understanding the transformational changes needed and challenges ahead at the classroom, school, and district levels.

Details

Journal of Educational Administration, vol. 55 no. 5
Type: Research Article
ISSN: 0957-8234

Keywords

Article
Publication date: 8 February 2011

Andrew J. Cobley, Lindsay Edgar, Martin Goosey, Rod Kellner and Timothy J. Mason

Previous studies have proven that, under optimised ultrasonic conditions, a range of materials used in electronic manufacturing can be sonochemically surface modified using benign…

Abstract

Purpose

Previous studies have proven that, under optimised ultrasonic conditions, a range of materials used in electronic manufacturing can be sonochemically surface modified using benign solutions at low temperature. The purpose of this paper is to focus on a specific process, namely, the desmearing of through holes in printed circuit boards (PCB). The objective was to determine whether the introduction of low frequency ultrasound (20 kHz) to the “etch” stage of a standard “swell and etch” desmear system could enable reduced temperature processing and the use of less chemistry in the permanganate solution.

Design/methodology/approach

The study was divided into three main stages. In the first “screening” phase, the effect of ultrasound in the etch solution was studied by measuring the weight loss after desmear on a PCB laminate material (Isola 370HR). Factors such as etch temperature and concentration of permanganate (including permanganate‐free) were varied. In stage 2, confirmatory runs were carried out on the most promising conditions from the screening work and through holes in a four‐layer multi‐layer board (MLB) were assessed for smear removal using a scanning electron microscope (SEM). Finally, a four‐layer MLB was desmeared through the most promising ultrasonic process and then metallized at a PCB manufacturer. Thermal shock testing was subsequently carried out and sections from the board assessed for inter‐connection defects (ICDs).

Findings

The initial screening study indicated that, whenever ultrasound was used in the etch stage of the desmear process, significantly higher weight loss was achieved compared to a standard “silent” process. This effect was most pronounced when permanganate was removed from the etch solution and, in this situation, weight loss could be an order of magnitude higher than the silent equivalent. Further testing on through holes suggested that smear‐free inner‐layers could only be guaranteed if permanganate was present in the etch solution but that ultrasound again improved smear removal. Final testing under semi‐production conditions confirmed that, if ultrasound was employed in the etch part of the desmear process, then a reduction in processing temperature from 85°C to 60°C could be achieved and the permanganate concentration halved (65 to 33 g/L) whilst still achieving ICD‐free boards.

Originality/value

The paper indicates the feasibility of using ultrasound to reduce temperatures and chemical concentrations used in the permanganate etch solution, whilst still producing through holes with no ICDs.

Details

Circuit World, vol. 37 no. 1
Type: Research Article
ISSN: 0305-6120

Keywords

Article
Publication date: 12 November 2018

Uchechukwu Nwoke, Collins Chikodi Ajibo and Timothy Okechukwu Umahi

This paper aims to investigate the extent to which the ideology of shareholder value is compatible with that of transformative corporate social responsibility (CSR). It traces the…

Abstract

Purpose

This paper aims to investigate the extent to which the ideology of shareholder value is compatible with that of transformative corporate social responsibility (CSR). It traces the transformation of corporations from quasi-public institutions at inception to purely private enterprises beginning from the middle of the nineteenth century and attempts to locate the ideology of CSR within the wider viewpoint of shareholder value.

Design/methodology/approach

This paper adopts a doctrinal approach through a critical evaluation of the nature and implications of the shareholder value ideology. Using existing literature in the area, it traces the evolution of the shareholder value ideology and how it is antithetical to any meaningful CSR regime.

Findings

The paper finds that there is a fundamental tension between ideas about the desirability of effective CSR and the belief that it is to the benefit of society as a whole for corporations to be run solely in the interest of their shareholders and for managers to seek to maximize shareholder value. This ideological tension renders contemporary CSR ineffective.

Originality/value

The paper offers a fresh insight or analysis into the transformation of corporations from quasi-social institutions to purely private enterprises in the middle of the nineteenth century. It does this by engaging in a historical narrative of the evolution of the corporate form and how contemporary ideas of shareholder value have resulted in the emergence of a contemporary CSR devoid of the radical spirit of CSR in the 1950s and 1960s.

Details

International Journal of Law and Management, vol. 60 no. 6
Type: Research Article
ISSN: 1754-243X

Keywords

Article
Publication date: 5 January 2015

Christina R. Peter, Timothy B. Tasker and Stacey S. Horn

Parents are sometimes perceived as barriers to providing comprehensive and inclusive sexuality education to young people. However, little is known about parents’ actual attitudes…

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Abstract

Purpose

Parents are sometimes perceived as barriers to providing comprehensive and inclusive sexuality education to young people. However, little is known about parents’ actual attitudes towards providing such broad information to young people. The purpose of this paper is to examine two different approaches to measuring parents’ attitudes towards sexuality information, a programme title approach and a topic-centred approach.

Design/methodology/approach

Illinois parents of adolescents (n=301) indicated their knowledge about and attitudes towards sexuality education programmes and 18 sexual health topics via online survey. Confirmatory factor analysis was used to examine whether parents’ attitudes were more consistent with a programme-centred (i.e. abstinence-only, comprehensive) or a topic-centred (i.e. physical health, sexual and gender identity, pleasure, and relationships) approach.

Findings

Parents were uncertain about what form of sexuality education was offered but most were equally comfortable with both abstinence-only and comprehensive programmes. Parents’ ratings of topics grouped significantly better by the topic-centred than the programme-centred approach. Parents rated all four subjects as important, with the highest mean ratings given to physical health topics. Further, parents’ ratings of importance by subject matter were largely independent of their reported programming preference. Together these findings provide evidence that parents believe it is important for their children to have access to a broad range of sexual health education information.

Originality/value

This study is one of the first to document parents’ support for information for young people that goes beyond being comprehensive to include topics such as identities and pleasure. In addition, parents’ lack of knowledge about sexuality education programming may obscure their support for sexual health information. Measuring support by specific topics, however, can help to overcome issues due to parents’ lack of knowledge about programming.

Details

Health Education, vol. 115 no. 1
Type: Research Article
ISSN: 0965-4283

Keywords

Open Access
Article
Publication date: 11 July 2023

Peter John Kuvshinikov and Joseph Timothy Kuvshinikov

The purpose of this paper is to evaluate the insights of founding entrepreneurs to understand what they consider as motivating factors in their decision to act upon…

1658

Abstract

Purpose

The purpose of this paper is to evaluate the insights of founding entrepreneurs to understand what they consider as motivating factors in their decision to act upon entrepreneurial intentions. Using this information, the entrepreneurial trigger event influence was conceptualized, and a scale developed for use in subsequent testable models.

Design/methodology/approach

Qualitative and quantitative techniques were used to construct an instrument that measures the presence and influence of entrepreneurial behavior triggers. The concept of triggering events was explored with 14 founding entrepreneurs. Themes emerged from this enquiry process which informed the development of four primary entrepreneurial triggering events. Over 600 entrepreneurs participated in the study. Exploratory factor analysis was used to identify dimensions of entrepreneurial triggers and was tested using confirmatory factor analysis.

Findings

Entrepreneurs perceive that personal fulfillment and job dissatisfaction serve as two significant trigger events which will lead individuals to engage in entrepreneurial behaviors. This research supports theorizing that suggests entrepreneurial trigger events have influence in motivating individuals to act upon entrepreneurial intentions and some trigger events may have more influence toward behavior than others.

Research limitations/implications

This research is subject to multiple limitations. Trigger events were limited to those identified in literature and the interviews. Most entrepreneurs participating in this study were from a limited geographic region. The entrepreneurs in this study reported their triggering event based on their memory which could have been affected by inaccurate recall or memory bias. No attempt has been made to model the comparative effects of the different variables on entrepreneurial outcomes. Finally, the entrepreneurial trigger event instrument did not measure the participant's demographics or psychographics which could have played a role in the influence of reported trigger event.

Practical implications

This study extends previous research that trigger events serve as catalysts for entrepreneurial behavior. Findings support the premise that different types of triggers have different levels of influence as antecedents of entrepreneurial behavior. Specifically, positive, negative, internal and external entrepreneurial triggering events were explicated. The Entrepreneurial Trigger Event Scale created to facilitate this study enables researchers to explore the effects of types and perceived influences of precipitating trigger events on the intentions of the individual that result in entrepreneurial behavior. The optimized instrument further expanded Shapero's (1975) proposed theory of the origins of entrepreneurial behavior.

Social implications

The development of a scale provides researchers with the opportunity to include the influence of entrepreneurial trigger events, as perceived by entrepreneurs, in future testable models. Entrepreneurial development organizations can use the knowledge to assist in understanding when potential entrepreneurs may act upon entrepreneurial intentions. Information gained can have significant implications for understanding the initiation of entrepreneurial behavior, entity establishment and business growth.

Originality/value

This research responds to a call for investigation into the influence of entrepreneurial trigger events on a person's decision to act upon entrepreneurial intentions. It is an early attempt to conceptualize a relevant construct of entrepreneurial trigger event influence and to develop a scale for use in empirical testing. It is distinguished by using planned behaviors, push and pull, motivation and drive reduction theories. These theories are applied to the perceptions of successful entrepreneurs to develop a construct and validate it.

Details

Journal of Small Business and Enterprise Development, vol. 31 no. 8
Type: Research Article
ISSN: 1462-6004

Keywords

Article
Publication date: 9 February 2018

Zhanming Liang, Peter F. Howard, Sandra Leggat and Timothy Bartram

The importance of managerial competencies in monitoring and improving the performance of organisational leaders and managers is well accepted. Different processes have been used…

1869

Abstract

Purpose

The importance of managerial competencies in monitoring and improving the performance of organisational leaders and managers is well accepted. Different processes have been used to identify and develop competency frameworks or models for healthcare managers around the world to meet different contextual needs. The purpose of the paper is to introduce a validated process in management competency identification and development applied in Australia – a process leading to a management competency framework with associated behavioural items that can be used to measure core management competencies of health service managers.

Design/methodology/approach

The management competency framework development study incorporated both qualitative and quantitative methods, implemented in four stages, including job description analysis, focus group discussions and online surveys.

Findings

The study confirmed that the four-stage process could identify management competencies and the framework developed is considered reliable and valid for developing a management competency assessment tool that can measure management competence amongst managers in health organisations. In addition, supervisors of health service managers could use the framework to distinguish perceived superior and average performers among managers in health organisations.

Practical implications

Developing the core competencies of health service managers is important for management performance improvement and talent management. The six core management competencies identified can be used to guide the design professional development activities for health service managers.

Originality/value

The validated management competency identification and development process can be applied in other countries and different industrial contexts to identify core management competency requirements.

Details

Journal of Health Organization and Management, vol. 32 no. 2
Type: Research Article
ISSN: 1477-7266

Keywords

Article
Publication date: 1 March 1974

Tom Schultheiss, Lorraine Hartline, Jean Mandeberg, Pam Petrich and Sue Stern

The following classified, annotated list of titles is intended to provide reference librarians with a current checklist of new reference books, and is designed to supplement the…

Abstract

The following classified, annotated list of titles is intended to provide reference librarians with a current checklist of new reference books, and is designed to supplement the RSR review column, “Recent Reference Books,” by Frances Neel Cheney. “Reference Books in Print” includes all additional books received prior to the inclusion deadline established for this issue. Appearance in this column does not preclude a later review in RSR. Publishers are urged to send a copy of all new reference books directly to RSR as soon as published, for immediate listing in “Reference Books in Print.” Reference books with imprints older than two years will not be included (with the exception of current reprints or older books newly acquired for distribution by another publisher). The column shall also occasionally include library science or other library related publications of other than a reference character.

Details

Reference Services Review, vol. 2 no. 3
Type: Research Article
ISSN: 0090-7324

1 – 10 of 51