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Article
Publication date: 1 February 1992

T.S. Gross, D.W. Watt, R.S. Raber, J.A. Perault and Y. Zhang

The failure of copper‐plated holes in dielectric laminates during thermal cycling is a serious problem for the electronics industry. The large difference in out‐of‐plane thermal…

Abstract

The failure of copper‐plated holes in dielectric laminates during thermal cycling is a serious problem for the electronics industry. The large difference in out‐of‐plane thermal expansion between the dielectric laminate and the copper plating can cause the copper plating to deform and fail as the board is thermally cycled. The purpose of this study was to demonstrate the feasibility of using electro‐optic holographic interferometry (EOHI) to measure deformation around plated holes and to evaluate methods for estimating the stress in the barrel plating. It was demonstrated that EOHI was more than adequate to resolve the out‐of‐plane thermally induced displacement field around an array of plated‐through holes. The displacement sensitivity was better than ±10 nm with high spatial resolution (92 ?m horizontally and 75 ?m vertically).The expansion was reasonably linear from 30°C to 120°C. The deformation around the individual holes was not axisymmetric. It is suggested that the method for estimating barrel stresses may be too sensitive to thickness and architecture variations in the pad for reliable stress estimates. An alternative scheme for estimation of barrel stresses based on thermal strain energy evaluation is described.

Details

Circuit World, vol. 18 no. 3
Type: Research Article
ISSN: 0305-6120

Article
Publication date: 25 March 2024

Robert Ford and Lindsay Schakenbach Regele

This historical example of the creation of the arms industry in the Connecticut River Valley in the 1800s provides new insights into the value of government venture capital (GVC…

Abstract

Purpose

This historical example of the creation of the arms industry in the Connecticut River Valley in the 1800s provides new insights into the value of government venture capital (GVC) and government demand in creating a new industry. Since current theoretical explanations of the best uses of governmental venture capital are still under development, there is considerable need for further theory development to explain and predict the creation of an industry and especially those industries where failures in private capital supply necessitates governmental involvement in new firm creation. The purpose of this paper is to provide an in depth historical review of how the arms industry evolved spurred by GVC and government created demand.

Design/methodology/approach

This study uses abductive inference as the best way to build and test emerging theories and advancing theoretical explanations of the best uses of GVC and governmental demand to achieve socially required outcomes.

Findings

By observing this specific historical example in detail, the authors add to the understanding of value creation caused by governmental venture capital funding of existing theory. A major contribution of this paper is to advance theory based on detailed observation.

Originality/value

The relatively limited research literature and theory development on governmental venture capital funding and the critical success factors in startups are enriched by this abductive investigation of the creation of the historically important arms industry and its spillover into creating the specialized machine industry.

Details

Journal of Management History, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1751-1348

Keywords

Abstract

Details

Looking for Information
Type: Book
ISBN: 978-1-80382-424-6

Book part
Publication date: 14 December 2017

Eric S. Brown

This paper analyzes the connection between black political protest and mobilization, and the rise and fall of a black urban regime. The case of Oakland is instructive because by…

Abstract

This paper analyzes the connection between black political protest and mobilization, and the rise and fall of a black urban regime. The case of Oakland is instructive because by the mid-1960s the ideology of “black power” was important in mobilizing two significant elements of the historically disparaged black community: (1) supporters of the Black Panthers and, (2) neighborhood organizations concentrated in West Oakland. Additionally, Oakland like the city of Atlanta also developed a substantial black middle class that was able to mobilize along the lines of its own “racialized” class interests. Collectively, these factors were important elements in molding class-stratified “black power” and coalitional activism into the institutional politics of a black urban regime in Oakland. Ultimately, reversal factors would undermine the black urban regime in Oakland. These included changes in the race and class composition of the local population: black out-migration, the “new immigration,” increasing (predominantly white) gentrification, and the continued lack of opportunity for poor and working-class blacks, who served as the unrequited base of the black urban regime. These factors would change the fortunes of black political life in Oakland during the turbulent neoliberal era.

Details

On the Cross Road of Polity, Political Elites and Mobilization
Type: Book
ISBN: 978-1-78635-480-8

Keywords

Content available
Book part
Publication date: 30 June 2023

Lisa M. Given, Donald O. Case and Rebekah Willson

Abstract

Details

Looking for Information
Type: Book
ISBN: 978-1-80382-424-6

Content available
Book part
Publication date: 30 June 2023

Lisa M. Given, Donald O. Case and Rebekah Willson

Abstract

Details

Looking for Information
Type: Book
ISBN: 978-1-80382-424-6

Book part
Publication date: 1 October 2015

Ikseon Suh and Joseph Ugrin

This study investigates how disclosure of the board of directors’ leadership and role in risk oversight (BODs oversight disclosure) influences investors’ judgments when…

Abstract

This study investigates how disclosure of the board of directors’ leadership and role in risk oversight (BODs oversight disclosure) influences investors’ judgments when information on risk exposures is disclosed. The theoretical lens through which we examine this issue involves negativity bias. Sixty-two stock market investors who engage in the evaluation and/or investment of stocks on a regular or professional basis participated in our study. Our results reveal that the addition of BODs oversight disclosure (positive information) does not carry significant weight on investor judgments (i.e., attractiveness and investment) when financial statement disclosures indicate a high level of operational and financial risk exposures (negative information). In contrast, under the condition of a low level of risk exposures, BODs oversight disclosure causes investors to assess higher risk in terms of worry, catastrophic potentials and unfamiliarity about risk information and, in turn, make less favorable investor judgments. Our findings add to the literature on negativity bias and contribute to the debate on the usefulness of disclosures about risk.

Details

Advances in Accounting Behavioral Research
Type: Book
ISBN: 978-1-78441-635-5

Keywords

Article
Publication date: 29 June 2020

Robert C. Ford and Keenan D. Yoho

The purpose of this paper is to illustrate, through the example of the Springfield Armory and its role in the development of interchangeable parts, the critical role of government…

Abstract

Purpose

The purpose of this paper is to illustrate, through the example of the Springfield Armory and its role in the development of interchangeable parts, the critical role of government in establishing a cluster of organizations that evolved into an innovation ecosystem primarily located in the Connecticut River Valley in the 1800s. Using the Springfield Armory example, we use the related but largely unjoined concepts of ecosystem and networks to show that these organizational forms are effective in driving innovation.

Design/methodology/approach

The design uses an in-depth analysis of the role of the Springfield Armory to explicate the joining of network and ecosystem theory as an early example of the importance of governmental funding and support for innovation.

Findings

The development of interchangeable parts in the American arms industry in the 19th century transformed manufacturing worldwide. At the heart of this transformation was the network of arms makers that developed in the Connecticut River Valley as a direct result of US Government investment and support. This network of arms makers evolved into an ecosystem of mutually reinforcing relationships as machine tool manufacturers benefited from an environment of free-flowing intellectual property, information and growing governmental demand for arms. The Armory illustrates the government’s role in initiating and sustaining clusters of innovation that otherwise might not have developed as quickly.

Originality/value

Much of the research on the role of government in creating innovation ecosystems and organizational networks is based on modern organizations. This use of the Springfield Armory in the early 1800s broadens the knowledge on how innovation ecosystems in conjunction with networked organizations can be created by governments serving the public good.

Details

Journal of Management History, vol. 26 no. 4
Type: Research Article
ISSN: 1751-1348

Keywords

Abstract

Details

The Emerald Handbook of Computer-Mediated Communication and Social Media
Type: Book
ISBN: 978-1-80071-598-1

Article
Publication date: 1 May 1997

María J. López‐huertas

The need for thesauri to help users in their search for information in online information systems has been discussed for several decades. Many wide‐ranging contributions have been…

1175

Abstract

The need for thesauri to help users in their search for information in online information systems has been discussed for several decades. Many wide‐ranging contributions have been made to solve this problem. Nevertheless, investigation is needed to design a thesaurus structure based on what is relevant for users and generators of information within a specific subject domain. This paper explores the possibility of creating a thesaurus from the cognitive viewpoint. This approach is based on a system (in this case represented by a thesaurus) that organises its representation of knowledge or its classification as closely as possible to the authors‘ and users’ images of the subject domain with the objective of increasing the interaction between users and texts, and thus the communication in a given information retrieval system. From this point of view, the thesaurus structure is considered as the essential foundation on which to base such an interactive thesaurus. Furthermore, this structure is conceived as representing the merging point for both the generators‘ and the users’ models of the subject domain and for their information needs. This paper is dedicated mainly to the generators‘ side involved in this process. It demonstrates how an author’s writings can be used to identify the generators‘ model and perception of the subject domain, and how these can later be inserted in the thesaurus structure. Discourse analysis is used as a main method to identify the categories and its relevance for building such a structure is discussed. It also outlines a general approach for the user side to set up different methods of getting the users’ information needs into the thesaurus structure.

Details

Journal of Documentation, vol. 53 no. 2
Type: Research Article
ISSN: 0022-0418

Keywords

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