Search results

1 – 10 of 33
Article
Publication date: 11 September 2009

Anne Bernassau, David Hutson, Christine E.M. Demore, David Flynn, Farid Amalou, Jonathan Parry, Jim McAneny, Tim W. Button, Marc P.Y. Desmulliez and Sandy Cochran

High‐frequency transducer arrays that can operate at frequencies above 30 MHz are needed for high‐resolution medical ultrasound imaging. The fabrication of such devices is…

Abstract

Purpose

High‐frequency transducer arrays that can operate at frequencies above 30 MHz are needed for high‐resolution medical ultrasound imaging. The fabrication of such devices is challenging not only because of the fine‐scale piezocomposite fabrication typically required but also because of the small size of arrays and their interconnects. The purpose of this paper is to present an overview of research to develop solutions for several of the major problems in high‐frequency ultrasound array fabrication.

Design/methodology/approach

Net‐shape 1‐3 piezocomposites operating above 40 MHz are developed. High‐quality surface finishing makes photolithographic patterning of the array electrodes on these fine scale piezocomposites possible, thus establishing a fabrication methodology for high‐frequency kerfless ultrasound arrays.

Findings

Structured processes are developed and prototype components are made with them, demonstrating the viability of the selected fabrication approach. A 20‐element array operating at 30 MHz is patterned and characterised. Furthermore, an electrode pattern suitable for a 20‐element array operating at 100 MHz is created to demonstrate the state of the art of photolithography processing directly on piezocomposite.

Practical implications

The work reported suggests that ultrasound arrays for real‐time biomedical imaging will be viable at higher frequencies than presently available commercially or previously reported in the research literature.

Originality/value

The main elements of a novel, fully mask‐based process for high‐frequency ultrasound transducer array fabrication are presented in outline in this paper.

Details

Sensor Review, vol. 29 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 11 September 2009

John Henry Sweet, David Hutson, Sandy Cochran and Anne Bernassau

The purpose of this paper is to explore concepts and manufacturing issues for the emerging piezo on silicon technology being used in ultra‐sound devices. Development of 3D…

Abstract

Purpose

The purpose of this paper is to explore concepts and manufacturing issues for the emerging piezo on silicon technology being used in ultra‐sound devices. Development of 3D silicon‐on‐silicon structures is now under way. Additional functionality can be achieved using piezoelectric‐on‐silicon structures and work in this area has started. A commercialisation road map is required, specifying development of the design and fabrication techniques from research to high volume and lower volume high‐value manufacture of niche products.

Design/methodology/approach

This conceptual paper outlines processes needed, along with their possible sources with illustrations of present capabilities. Included are surface finishing techniques such as grinding, bonding technology for dissimilar materials, and through‐wafer‐via fabrication. Control of acoustic propagation, thermal expansion and electric field fringing effects will be considered.

Findings

Areas that require research and development are identified with possible starting points using techniques already used in other applications. Strong emphasis on empirical research highlights possible issues with examples including surface finishing and wafer dicing to show current methods.

Research limitations/implications

Archetypal pixellated piezoelectric‐on‐silicon structures highlight critical points. In the authors' work, such pixellated structures occur in 1‐3 connectivity piezoelectric ceramic‐polymer composites with unit cell length scales from several millimetres, manufactured with mechanical dicing, to less than 50 μm, manufactured with micro‐moulding.

Practical implications

A forward looking approach of “thinking freely” is taken, this opens up potential manufacturing routes and ideas precluded from an iterative approach.

Originality/value

The conclusion suggests the criteria for a “design for” approach linked to either bottom up or top down assembly techniques for the integration of conventional and unusual piezoelectric materials with silicon in 3D structures.

Details

Sensor Review, vol. 29 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 22 March 2023

Rashmi Singh and Lalatendu Kesari Jena

This paper aims to investigate the effect of parent–adolescent conflict in step versus biological families on family communication patterns (FCPs) and the conflict resolution…

Abstract

Purpose

This paper aims to investigate the effect of parent–adolescent conflict in step versus biological families on family communication patterns (FCPs) and the conflict resolution strategy adopted by adolescents during family destinations or holiday planning (where to visit?).

Design/methodology/approach

The literature on family conflict (i.e. parent–adolescent conflict) and the different types of families (step vs nuclear) supported the proposed framework. The survey was conducted in the Indian subcontinent with a sample size of 437 adolescents. SPSS 22.0 was used for factor analysis (exploratory and confirmatory factor analysis) and structural equation modelling was used through AMOS 26.0 for data analysis.

Findings

Significant relationship was observed between the types of families (step and biological), FCP and the resolution strategy chosen by Indian adolescents. Adopting a resolution strategy by adolescents in both families depends on the type of FCP in the family. Adolescents in stepfamilies have socio-oriented FCP and use “positive problem-solving” and “conflict withdrawal” as a resolution strategy. In contrast, adolescents in biological families have concept-oriented families and use “conflict enhancement” as a resolution strategy. It has also been found that adolescents who fall into high-stress categories used conflict enhancement strategies. In contrast, those who fall under low-stress categories used positive problem-solving and withdrawal strategies.

Practical implications

This study will add a new chapter to adolescents’ decision-making literature in line with the previous research. It has practical implications for tourism marketers, academicians/researchers and policymakers. Marketers can segment adolescents into step versus biological families, and the choice of resolution strategies may introduce efficient and competent marketing strategies and promotional campaigns.

Originality/value

This study favours that family type is a robust construct to predict adolescents’ choice of resolution strategy. So, it is one of the most influential variables in adolescents’ resolution strategy adoption.

Details

International Journal of Conflict Management, vol. 34 no. 4
Type: Research Article
ISSN: 1044-4068

Keywords

Article
Publication date: 1 February 1996

Lynne M. Sallot

In order to test effects of motives, communication style and licensing on the reputations of sponsors of public relations, a 4 × 2 × 2 factorial design experiment was conducted by…

Abstract

In order to test effects of motives, communication style and licensing on the reputations of sponsors of public relations, a 4 × 2 × 2 factorial design experiment was conducted by the author with 585 non‐student adults and undergraduate university students in the USA. Perceived motives to impression manage had a strong effect on results, with prosocial or mixed and selfish motives seen as a ‘hustle’ on the part of corporate sponsors. Mixed support was found for licensing as a means of enhancing the reputation of public relations. Communication style — ‘symmetric’ versus ‘persuasive’ — had no effect on results. Impression management theory suggests that perceived motives and self‐interests may explain the poor reputation sometimes attributed to public relations and its clients or sponsors.

Details

Journal of Communication Management, vol. 1 no. 2
Type: Research Article
ISSN: 1363-254X

Keywords

Article
Publication date: 1 February 1991

David Cochran

One of the most colorful and free‐spirited publishers in U.S. history, the Charles H. Kerr Publishing Company of Chicago has also made an impressive mark on that history. As this…

Abstract

One of the most colorful and free‐spirited publishers in U.S. history, the Charles H. Kerr Publishing Company of Chicago has also made an impressive mark on that history. As this country's oldest alternative publishing house—founded in 1886—it has been closely associated with such movements as populism, freethought, socialism, and the Industrial Workers of the World (IWW), as well as various currents of labor and social radicalism of more recent years. The Kerr Company has also established itself as a leading publisher of original works and reprints in the field of labor and radical history. Several generations of America's progressives and dissidents have relied heavily on Kerr publications for their education and inspiration. For libraries with a focus on labor, politics, women, reform movements, anarchism, socialism, pacifism, radical fiction, popular culture, and the broad counter‐culture, Kerr books are indispensable.

Details

Collection Building, vol. 11 no. 2
Type: Research Article
ISSN: 0160-4953

Article
Publication date: 26 January 2022

Ramin Bashir Khodaparasti and Hooshmand Bagheri Garbollagh

Telecommuting can reduce traffic congestion, energy consumption, prevalence and a death toll of COVID-19 among employees due to less transportation and fewer physical contacts…

Abstract

Purpose

Telecommuting can reduce traffic congestion, energy consumption, prevalence and a death toll of COVID-19 among employees due to less transportation and fewer physical contacts among employees, on the one hand, and efficiently develop their use of information and communications technology, on the other hand. In this regard, the present study aims to explore antecedents and consequences of telecommuting in public organizations.

Design/methodology/approach

The study used a descriptive survey method to collect data. The statistical population includes all employees of government organizations in West Azerbaijan province in 2020, which according to the collected information, their number is equal to 63,079 employees. Based on Cochran's formula, a sample size of 686 people was obtained; stratified random sampling was used to select sampling. The process of calculating the sample volume was such that after referring to the preliminary sample and processing the collected data, the variance of the given answers was approximately 0.446. After obtaining the variance of the data, assuming a maximum acceptable error of 5% and a significance level of 0.05, the Cochran's formula calculated the sample size to be 686 people. In order to collect and measure data for the study, a standard questionnaire and the collected data were analyzed using structural equation modeling.

Findings

Findings indicate that there is no meaningful relationship between the employees' physical job conditions or the quality of their life with telecommuting and that telecommuting does not have a significant effect on their life. However, job burnout, training and telecommuting experience have a significant positive effect on telecommuting, which in turn has a positive and significant effect on job security, job flexibility, organizational performance and overall productivity of employees.

Research limitations/implications

This research is a cross-sectional study, and its data have been collected in a certain period of time, while longitudinal research can provide a richer result. Future research can benefit from the impact of employee isolation and telecommuter organizational commitment.

Originality/value

This study hopes to contribute to the increase of the scientific knowledge in the telecommuting field and to allow organizations to rethink the telecommuting strategies to optimize resources and costs and to improve the organization's productivity without harming the quality of life and well-being of their workers.

Details

Kybernetes, vol. 52 no. 6
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 April 2000

Sandra V. Sandy and Susan K. Boardman

The Peaceful Kids Early Childhood Social‐Emotional (ECSEL) Conflict Resolution Program and curriculum was created to fulfill the need for a developmentally appropriate…

1137

Abstract

The Peaceful Kids Early Childhood Social‐Emotional (ECSEL) Conflict Resolution Program and curriculum was created to fulfill the need for a developmentally appropriate, theory‐based approach to promoting social‐emotional, cognitive, and conflict resolution skills' development in preschoolers (ages 2 to 6). From Fall 1997 through Fall 1999, an evaluation of this program occurred in 18 classrooms in day care/Head Start centers. Each classroom was randomly assigned to one of three conditions: ECSEL training for (1) day care staff, parents, and children, (2) day care staff and children (but not their parents), and (3) control, no‐training. As predicted, children in the condition where both parents and day care staff were trained showed significant increases in assertiveness, cooperation, and self‐control, and significant decreases in aggressiveness and socially withdrawn behavior. Parents receiving training showed significant reductions in authoritarian and permissive parenting styles and an increase in authoritative parenting style.

Details

International Journal of Conflict Management, vol. 11 no. 4
Type: Research Article
ISSN: 1044-4068

Book part
Publication date: 7 July 2015

Marilena Antoniadou, Peter John Sandiford, Gillian Wright and Linda Patricia Alker

This chapter explores how Cypriot lecturers perceive and experience fear while being at work. Drawing on the lens of interpretive inquiry, data were collected through interviews…

Abstract

This chapter explores how Cypriot lecturers perceive and experience fear while being at work. Drawing on the lens of interpretive inquiry, data were collected through interviews with 19 lecturers. Analysis focused on experiences of workplace fear offering rich insights into characteristics of fear, eliciting events, and coping ways. Findings help to unveil the specific events that lead to fear in the Cypriot universities, and the ways lecturers manage their fearful experiences. The study contributes to the study of discrete emotions, by empirically examining fear’s own storyline through the workers’ own perspectives, within a specific context.

Details

New Ways of Studying Emotions in Organizations
Type: Book
ISBN: 978-1-78560-220-7

Keywords

Book part
Publication date: 10 September 2018

Sandy Bargainnier, Anneke McEvoy, Zarina Smith, Megan Brown, Najah Zaaeed and Jessica Maureen Harris

This chapter will explore, from a practice and a personal perspective, multidisciplinary strategies that promote successful transition from middle school to college among male…

Abstract

This chapter will explore, from a practice and a personal perspective, multidisciplinary strategies that promote successful transition from middle school to college among male refugees in urban settings. These best practices are based on the combined experiences of the authors as they have formally and informally worked together to help these young people navigate becoming young adults in the United States. This opening section will highlight the value of collaborative, formal, and informal networks, comprised of community-based organizations, K-12 institutions, and healthcare providers, which support refugee transition into adulthood and higher education in the urban setting. Last, this chapter will focus on the role of sport, social media, and mentors as a framework of support for refugee students as they navigate their way through higher education access, financing, and retention in the United States.

Details

Refugee Education: Integration and Acceptance of Refugees in Mainstream Society
Type: Book
ISBN: 978-1-78714-796-6

Keywords

Article
Publication date: 1 March 2016

Christopher C. Martell

In this study, a teacher-researcher examined his students’ conceptions of Whiteness within U.S. history courses at an ethnically and economically diverse urban high school. Using…

Abstract

In this study, a teacher-researcher examined his students’ conceptions of Whiteness within U.S. history courses at an ethnically and economically diverse urban high school. Using critical race theory as the lens, this mixed method study found most students could explain the role of race in history. Students of color were more likely to express racism is common in the current day, while White students were more likely to express racism as uncommon. Whites were more likely to express racism as on a dramatic decline or the result of a few individuals. This study highlights the positive impact a race-conscious social studies classroom can have on all students. It also shows the many barriers teachers face in helping White students understand their roles in a system privileging them because of their skin color.

Details

Social Studies Research and Practice, vol. 11 no. 1
Type: Research Article
ISSN: 1933-5415

Keywords

1 – 10 of 33