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Article
Publication date: 1 June 1995

D.S. Malik, J.N. Mordeson and M.K. Sen

Studies the concept of the Cartesian composition of fuzzy finite state machines. Shows that fuzzy finite state machines and their Cartesian composition share many…

Abstract

Studies the concept of the Cartesian composition of fuzzy finite state machines. Shows that fuzzy finite state machines and their Cartesian composition share many structural properties. Some of these properties are singly generated; retrievability, connectedness, strong connectedness, commutativity, perfection and state independence. Thus a fuzzy finite state machine which is a Cartesian composition of submachines can be studied in terms of smaller machines.

Details

Kybernetes, vol. 24 no. 4
Type: Research Article
ISSN: 0368-492X

Keywords

Book part
Publication date: 29 May 2009

W. Erwin Diewert

The chapter reviews and extends the theory of exact and superlative index numbers. Exact index numbers are empirical index number formula that are equal to an underlying…

Abstract

The chapter reviews and extends the theory of exact and superlative index numbers. Exact index numbers are empirical index number formula that are equal to an underlying theoretical index, provided that the consumer has preferences that can be represented by certain functional forms. These exact indexes can be used to measure changes in a consumer's cost of living or welfare. Two cases are considered: the case of homothetic preferences and the case of nonhomothetic preferences. In the homothetic case, exact index numbers are obtained for square root quadratic preferences, quadratic mean of order r preferences, and normalized quadratic preferences. In the nonhomothetic case, exact indexes are obtained for various translog preferences.

Article
Publication date: 4 February 2022

Ibrahim Shehatta, Abdullah M_ Al-Rubaish and Inaam Ullah Qureshi

The purpose of this study is to analyze the share of coronavirus publications and its citation-based indicators in various journal impact factor quartiles to discover…

Abstract

Purpose

The purpose of this study is to analyze the share of coronavirus publications and its citation-based indicators in various journal impact factor quartiles to discover their relationship and analyze the advantages of Q1 publications.

Design/methodology/approach

Bibliometric analyses of world coronavirus research publications (articles and reviews) indexed in Web of Science database over 20 years among four journal quartiles were performed.

Findings

The publication and citation shares in various journal quartiles were decreased in the following order: Q1 > Q2 > Q3 > Q4. World coronavirus publications/citations share in Q1 journals were on average 1.78/4.18, 2.75/7.90 and 5.07/27.79 times greater than Q2, Q3 and Q4 publications, respectively. Moreover, similar patterns were obtained for various research performance dimensions: impact, excellence, corporate interest and funding indicators. These indicators of Q1 publications were much better than the corresponding values for world overall and infectious disease literature. Thus, there was a clear research performance advantage of Q1 coronavirus publications.

Originality/value

To the best of the authors’ knowledge, this is the first study analyzing the journal impact factor quartiles and its impact on coronavirus research performance. The results/findings of this study are useful for many stakeholders to enhance the research influence by considering journal impact factor quartiles especially Q1 journals.

Details

Global Knowledge, Memory and Communication, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9342

Keywords

Abstract

Purpose

The purpose of this paper is to analyze the innovation process of organizations representing the main sectors of Brazilian economic activity.

Design/methodology/approach

The literature review focuses on analyzing the innovation process characteristics regarding the innovation types. The authors carried out interviews with executives and managers in charge of innovation at the leading large companies in the respective sectors analyzed. The data analysis of this qualitative research was structured in three steps. The first step is the analysis of data collected for encoding, the second step, the summarization of the common points presented by the companies in each sector and, finally, the interpretation of these data, aided by triangulation from secondary data that support the analysis of the collected primary data.

Findings

The main contribution of this study is to characterize the innovation process of organizations representing the main sectors of the Brazilian economy, with a classification regarding the sectoral innovation standard.

Practical implications

The authors’ intent is that the paper can contribute with a comparative analysis among companies of the same sector and, subsequently, among companies of the different surveyed sectors. Thus, the characterization aims to present the companies’ innovation process and the comparative analysis aims to verify the innovation sectoral patterns. In addition, as implications for management practice, some strategies for better knowledge management in the organization are suggested for each type of innovation.

Originality/value

The main theoretical contribution focuses on the development of a conceptual model that structures the analyzed variables of the constructs “innovation process” and “innovation sectoral patterns”, allowing not only the characterization but also the comparative analysis of the representative organizations present in the sample.

Details

Journal of Knowledge Management, vol. 23 no. 1
Type: Research Article
ISSN: 1367-3270

Keywords

Article
Publication date: 13 August 2018

Wenxing Niu, Lei Liu, Hong Xu and Jinxiang Dong

The purpose of this paper is to study the tribological properties of (C9H8N)4(H2O)4[Zr8P12O40(OH)8F8] (designated as ZrPOF-Q1) used as an additive in lithium grease.

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Abstract

Purpose

The purpose of this paper is to study the tribological properties of (C9H8N)4(H2O)4[Zr8P12O40(OH)8F8] (designated as ZrPOF-Q1) used as an additive in lithium grease.

Design/methodology/approach

The tribological properties of ZrPOF-Q1 as an additive in the lithium grease were evaluated with a four-ball tester. To understand the lubrication mechanism, post-test characterization of the contact tracks was performed via three-dimensional (3D) optical profiler, scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS).

Findings

The results reveal that ZrPOF-Q1 exhibits good performance in anti-wear, friction-reducing and load-carrying capacity. The action mechanism is estimated through analysis of the worn surface with SEM, EDS and 3D. The results indicate that ZrPOF-Q1 can adhere on the substrate, protecting the rubbed surfaces from a direct contact, even under high load for a long-time test. ZrPOF-Q1 can adhere on the substrate, protecting the rubbed surfaces from a direct contact, even under high load for a long-time test.

Originality/value

This work illustrates that ZrPOF-Q1 as an additive can improve lubricating performance. These tribological properties make ZrPOF-Q1 a promising candidate for lubricant additive.

Details

Industrial Lubrication and Tribology, vol. 70 no. 8
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 1 November 2000

Stefan Doll, Karl Schweizerhof, Ralf Hauptmann and Christof Freischläger

As known from nearly incompressible elasticity, selective reduced integration (SRI) is a simple and effective method of overcoming the volumetric locking problem in 2D and…

Abstract

As known from nearly incompressible elasticity, selective reduced integration (SRI) is a simple and effective method of overcoming the volumetric locking problem in 2D and 3D solid elements. This method of finite elastoviscoplasticity is discussed as are its well‐known limitations. In this context, an isochoric‐volumetric decoupled material behavior is assumed and thus the additive deviatoric‐volumetric decoupling of the consistent algorithmic moduli tensor is essential. By means of several numerical examples, the performance of elements using selective reduced integration is demonstrated and compared to the performance of other elements such as the enhanced assumed strain elements. It is shown that a minor modification, with little numerical effort, leads to rather robust element behaviour. The application of this process to so‐called solid‐shell elements for thin‐walled structures is also discussed.

Details

Engineering Computations, vol. 17 no. 7
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 February 1986

RONALD R. YAGER

In this second part of a set of two papers we investigate some applications of quantified statements.

Abstract

In this second part of a set of two papers we investigate some applications of quantified statements.

Details

Kybernetes, vol. 15 no. 2
Type: Research Article
ISSN: 0368-492X

Article
Publication date: 1 June 1997

Bob Stephens

Compares three different groups of employees, within Ford Australia, to determine the extent to which TQM principles and quality tools are applied. By means of a survey…

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Abstract

Compares three different groups of employees, within Ford Australia, to determine the extent to which TQM principles and quality tools are applied. By means of a survey instrument and a two‐tailed t‐test for independent samples, concludes that, while ISO 9000 is not a prescription for TQM, implementation increased the application of TQM principles and quality tools. A significantly greater increase was achieved by implementing Ford’s Q1 Award process resulting in the recommendation to implement Q1 in all Ford’s non‐manufacturing divisions.

Details

The TQM Magazine, vol. 9 no. 3
Type: Research Article
ISSN: 0954-478X

Keywords

Article
Publication date: 1 December 2002

David C. Wyld

In this paper, the author examines the growth of B2B e‐commerce, examining results from the ISM/Forrester Reports on e‐Business conducted to date. Through this analysis…

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Abstract

In this paper, the author examines the growth of B2B e‐commerce, examining results from the ISM/Forrester Reports on e‐Business conducted to date. Through this analysis, the researcher demonstrates that contrary to the generally‐held perception that B2B has experienced a sharp downturn in the wake of the recession, e‐procurement has taken hold and is rapidly expanding across the American landscape. Specifically, the Reports on e‐Business are studied to look for trends in the overall use of e‐procurement methods: to reduce paperwork and cycle times; to procure direct and indirect goods and services; to collaborate with suppliers; and to reduce the total cost of procurement. The author concludes that overall, the analysis shows that the push towards e‐procurement is being led by the largest firms. This and other key trends are discussed in the conclusion of this report, along with suggestions for future research.

Details

Management Research News, vol. 25 no. 12
Type: Research Article
ISSN: 0140-9174

Keywords

Book part
Publication date: 3 July 2018

Jelena Spanjol, Yazhen Xiao and Lisa Welzenbach

Companies are increasingly leveraging digital technologies toward innovation strategies that deliver novel features to customers sequentially through successive new…

Abstract

Purpose

Companies are increasingly leveraging digital technologies toward innovation strategies that deliver novel features to customers sequentially through successive new product generations (i.e., successive innovation). Extant literature examining successive innovation is both limited and fragmented across marketing and management literatures. Our goal is to synthesize literature on concepts related to successive innovation (such as versioning and upgrades) to identify the core dimensions of successive innovation and provide a cohesive framework to guide future research in this domain.

Methodology/approach

Given the equivocality in understanding the conceptual domain of successive innovation, we review and synthesize literature across three disciplinary domains: marketing, management, and information and decision sciences. Based on the emerging patterns from the literature review, we develop a conceptual framework of successive innovation with the aim of moving the discussion toward greater theoretical clarity.

Findings

Based on the literature review and synthesis, we identify three core-dimensions that define successive innovation and compare these across digital and physical product realms: coexistence, embeddedness, and adoption controllability.

Research Implications

Our proposed conceptual dimensions of successive innovation, and discussion of differences across physical and digital product domains, offer important directions for future research and a common vocabulary.

As physical and digital successive innovations can differ in coexistence, embeddedness, and adoption controllability, firms need to consider relevant barriers to adoption of successive product generations and select appropriate strategies to promote and communicate successive innovation. Our proposed successive innovation conceptual dimensions help managers comprehend the complexity of arranging such innovation in business and consumer segments.

Originality/value

Our contribution to the emerging literature on successive innovation is threefold. First, by conducting a comprehensive literature review, we integrate insights from different fields of inquiry (i.e., marketing, management, and information and decision sciences). Second, based on the synthesis of the literature, we offer a conceptual framework of successive innovation, which aims to move the discussion toward greater theoretical clarity. Third, based on our review and conceptual framework, we discuss a set of future research directions to guide academic research efforts.

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