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1 – 10 of 508
Article
Publication date: 15 May 2009

J.H.‐G. Ng, M.P.Y. Desmulliez, M. Lamponi, B.G. Moffat, A. McCarthy, H. Suyal, A.C. Walker, K.A. Prior and D.P. Hand

The purpose of this paper is to present a novel manufacturing process that aims to pattern metal tracks onto polyimide at atmospheric pressure and ambient environment. The process…

Abstract

Purpose

The purpose of this paper is to present a novel manufacturing process that aims to pattern metal tracks onto polyimide at atmospheric pressure and ambient environment. The process can be scaled up for industrial applications.

Design/methodology/approach

From a thorough literature survey, different approaches were carried out for processing polyimide. Following a design of experiments for the processing and various characterisation techniques, a micro‐coil was manufactured as a test demonstrator.

Findings

The characteristics of some main formaldehyde‐based electroless copper baths were compared. The quality of the sidewalls was characterised and the performance of the process was assessed.

Originality/value

This paper demonstrates a high‐value manufacturing technique that is mass manufacturable, low cost and suitable for use on 3D surfaces. Criteria required for the development of a direct‐writing process have been described. The issues surrounding electroless plating on polyimide have been explained.

Details

Circuit World, vol. 35 no. 2
Type: Research Article
ISSN: 0305-6120

Keywords

Article
Publication date: 14 July 2023

YiQin Sang, Huang Li, Hongjuan Ge, Cong Gao, Yinxiao Hu and Hui Jin

This study aims to conduct the aircraft electrical wiring interconnection system (EWIS) safety risk assessment process abundantly and hierarchically and establish the assessment…

Abstract

Purpose

This study aims to conduct the aircraft electrical wiring interconnection system (EWIS) safety risk assessment process abundantly and hierarchically and establish the assessment index system considering the weights and interrelationships of different levels of indices.

Design/methodology/approach

Due to the failure of EWIS being multifactorial, hidden and diverse, this paper divides the factors influencing the failure of EWIS into 3 primary indices, 13 secondary indices and 38 tertiary indices. Taking open circuit failure (OCF) and short circuit failure (SCF) as examples, calculate the weights of assessment indices based on the triangular fuzzy number analytic hierarchy process (TFNAHP) and triangular fuzzy number decision-making trial and evaluation laboratory (TFNDEMATEL). The cloud model (CM) divides the risk levels and obtains the safety risk assessment results. The comparative analyses of different weight calculation methods, different failure modes and different aircraft EWIS zones verify the effectiveness and practicability of the proposed method.

Findings

The results show that the proposed method aligns more with the actual situation than other methods. Also, the results identify key focus objects in EWIS safety risk assessment, such as the surrounding environmental factors among the primary indices having the most significant influence on OCF and SCF, the risk level of SCF being higher than that of OCF, etc.

Originality/value

This paper proposes a safety risk assessment index system for aircraft EWIS based on the cable parameters, surrounding environmental factors, installation and protection methods. The weight assignment is added to the assessment index system, and the safety risk assessment model is constructed by combining TFNAHP, TFNDEMATEL and CM.

Content available
Book part
Publication date: 24 January 2024

Kimberly Yost

Abstract

Details

Courageous Companions
Type: Book
ISBN: 978-1-83753-987-1

Article
Publication date: 18 May 2010

Rabindra N. Das, Frank D. Egitto and Voya R. Markovich

Material formulation, structuring and modification are key to increasing the unit volume complexity and density of next generation electronic packaging products. Laser processing…

Abstract

Purpose

Material formulation, structuring and modification are key to increasing the unit volume complexity and density of next generation electronic packaging products. Laser processing is finding an increasing number of applications in the fabrication of these advanced microelectronic devices. The purpose of this paper is to discuss the development of new laser‐processing capabilities involving the synthesis and optimization of materials for tunable device applications.

Design/methodology/approach

The paper focuses on the application of laser processing to two specific material areas, namely thin films and nanocomposite films. The examples include BaTiO3‐based thin films and BaTiO3 polymer‐based nanocomposites.

Findings

A variety of new regular and random 3D surface patterns are highlighted. A frequency‐tripled Nd:YAG laser operating at a wavelength of 355 nm is used for the micromachining study. The micromachining is used to make various patterned surface morphologies. Depending on the laser fluence used, one can form a “wavy,” random 3D structure, or an array of regular 3D patterns. Furthermore, the laser was used to generate free‐standing nano and micro particles from thin film surfaces. In the case of BaTiO3 polymer‐based nanocomposites, micromachining is used to generate arrays of variable‐thickness capacitors. The resultant thickness of the capacitors depends on the number of laser pulses applied. Micromachining is also used to make long, deep, multiple channels in capacitance layers. When these channels are filled with metal, the spacings between two metallized channels acted as individual vertical capacitors, and parallel connection eventually produce vertical multilayer capacitors. For a given volume of capacitor material, theoretical capacitance calculations are made for variable channel widths and spacings. For comparison, calculations are also made for a “normal” capacitor, that is, a horizontal capacitor having a single pair of electrodes.

Research limitations/implications

This technique can be used to prepare capacitors of various thicknesses from the same capacitance layer, and ultimately can produce variable capacitance density, or a library of capacitors. The process is also capable of making vertical 3D multilayer embedded capacitors from a single capacitance layer. The capacitance benefit of the vertical multilayer capacitors is more pronounced for thicker capacitance layers. The application of a laser processing approach can greatly enhance the utility and optimization of new materials and the devices formed from them.

Originality/value

Laser micromaching technology is developed to fabricate several new structures. It is possible to synthesize nano and micro particles from thin film surfaces. Laser micromachining can produce a variety of random, as well as regular, 3D patterns. As the demand grows for complex multifunctional embedded components for advanced organic packaging, laser micromachining will continue to provide unique opportunities.

Details

Circuit World, vol. 36 no. 2
Type: Research Article
ISSN: 0305-6120

Keywords

Content available
Book part
Publication date: 1 August 2023

Julie Stubbs, Sophie Russell, Eileen Baldry, David Brown, Chris Cunneen and Melanie Schwartz

Abstract

Details

Rethinking Community Sanctions
Type: Book
ISBN: 978-1-80117-641-5

Book part
Publication date: 19 October 2020

Christy L. Howard

This chapter discusses an innovative teaching method using an avatar to engage young learners in United States geographic studies. While this technique does not call for a teacher…

Abstract

This chapter discusses an innovative teaching method using an avatar to engage young learners in United States geographic studies. While this technique does not call for a teacher to perform in character, it is directly related to storytelling. The educator successfully personifies an inanimate object for engagement and education, linking it to learning objectives. In the author's case, “Moffat the Traveling Rabbit” accompanies first-grade Colorado students in their study of all 50 states. By endowing such an object with human qualities, the teacher draws students in to standards-based instruction presented in a new way. The use of an icon or figure is familiar to video gamers in representing themselves and other players. In education, presenting nonvisual concepts in character form is a familiar strategy and has multiple benefits for young students. As chapter examples demonstrate, teaching history, geography, and writing skills through an avatar encourages creativity and a sense of accessibility to those subjects for the young child. As the author also points out, students who experience discomfort in some situations may feel supported by a nonthreatening “companion” accepted within the class, enabling them to participate. By teaching with an avatar, students are drawn into experiential learning while practicing grade-level skills across multiple curricula. Such experiential learning promotes meaningful curiosity and creates a foundational base from which to make further connections. The author outlines how she has used a stuffed rabbit in her classroom to make these connections, inspiring her students to write their own geography- and history-based stories.

Details

Living History in the Classroom
Type: Book
ISBN: 978-1-78973-596-3

Keywords

Abstract

Details

The Handbook of Road Safety Measures
Type: Book
ISBN: 978-1-84855-250-0

Book part
Publication date: 4 September 2020

Jacqueline Briggs

This chapter provides a genealogy of the Gladue–Ipeelee principle of special consideration of Indigenous circumstances at sentencing. The principle is codified in the 1996…

Abstract

This chapter provides a genealogy of the Gladue–Ipeelee principle of special consideration of Indigenous circumstances at sentencing. The principle is codified in the 1996 statutory requirement that “all available sanctions other than imprisonment … should be considered for all offenders, with particular attention to the circumstances of Aboriginal offenders” (s. 718.2e of the Criminal Code of Canada). Using the Foucaultian genealogy method to produce a “history of the present,” this chapter eschews normative questions of how s. 718.2e has “failed” to reduce Indigenous over-incarceration to instead focus on how practices of “special consideration” reproduce settler-state paternalism. This chapter addresses three key components of the Gladue–Ipeelee principle: the collection of circumstances information, the characterization of those circumstances, and finally their consideration at sentencing. Part one focuses on questions of legitimacy and authority and explicates how authority and responsibility to produce Indigenous circumstances knowledge was transferred from the Department of Indian Affairs (DIA) to Indigenous Courtworker organizations in the late 1960s/early 1970s. Part two identifies how authority shapes problematization by examining the characterization of Indigenous circumstances in the two eras, finding that present-day Gladue reports articulate an Indigenous history and critique of colonialism as the root cause of Indigenous criminalization, whereas DIA reports prior to 1970 generally characterized this criminalization as a “failure to assimilate.” Part three focuses on the structural reproduction of power relations by exploring historical continuities in judicial and executive-branch consideration of Indigenous circumstances, suggesting that the Gladue–Ipeelee principle reinscribes a colonial “mercy” framework of diminished responsibility. The author discusses how the principle operates in the shadow of Indigenous over-incarceration as a form of state “recognition” and a technique of governance to encourage Indigenous participation in the settler justice system and suggests that the Gladue–Ipeelee principle produces a governing effect that reinforces settler-state authority by recirculating colonial practices and discourses of settler superiority.

Details

Studies in Law, Politics, and Society
Type: Book
ISBN: 978-1-83982-297-1

Keywords

Abstract

Details

Creating Shared Value to get Social License to Operate in the Extractive Industry
Type: Book
ISBN: 978-1-83909-924-3

Article
Publication date: 3 April 2009

Miia Martinsuo and Päivi Lehtonen

Earlier research has investigated project autonomy only in the context of one parent organization, and not sufficiently in complex stakeholder environments. This paper aims to…

1063

Abstract

Purpose

Earlier research has investigated project autonomy only in the context of one parent organization, and not sufficiently in complex stakeholder environments. This paper aims to examine project autonomy and its formation in a complex stakeholder environment. The purpose is to increase understanding on project autonomy, its formation, enablers, and barriers in a complex stakeholder environment, particularly in service development networks.

Design/methodology/approach

An embedded case study strategy of 11 service development projects are employed within the same non‐profit parent organization, each with their unique, complex stakeholder networks. Data were collected through interviews with key informants both in the projects and their parent organization and content analyzed.

Findings

The results reveal that project autonomy appears in constant interplay with the surrounding stakeholder environment. Four types of context‐dependent autonomy are characterized in the projects: isolated, privileged, networked, and embedded. How the parent organization enables and constrains autonomy is also reported by moderating the level of attention given to projects more or less deliberately.

Research limitations/implications

The alleged connection between project autonomy and success needs to be questioned in complex stakeholder environments. Further research is suggested on the dynamics of project autonomy throughout the project lifecycle, and the effects of contingency factors such as project type. As the embedded single‐case strategy has its limitations for generalizability, further research should test and verify the findings in other contexts.

Practical implications

Project manager and owner capabilities should be aligned with the type and degree of project autonomy.

Originality/value

The results contribute to the literature on project autonomy by drawing attention to the complexity of a project's stakeholder environment and by lending empirical support to recent conceptual research on context‐bound project strategies.

Details

International Journal of Managing Projects in Business, vol. 2 no. 2
Type: Research Article
ISSN: 1753-8378

Keywords

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