Search results

1 – 10 of over 6000
Content available
Article
Publication date: 8 February 2008

78

Abstract

Details

Circuit World, vol. 34 no. 1
Type: Research Article
ISSN: 0305-6120

Content available
Article
Publication date: 23 November 2021

Phuc Bao Uyen Nguyen

The purpose is to develop search and detection strategies that maximize the probability of detection of mine-like objects.

Abstract

Purpose

The purpose is to develop search and detection strategies that maximize the probability of detection of mine-like objects.

Design/methodology/approach

The author have developed a methodology that incorporates variational calculus, number theory and algebra to derive a globally optimal strategy that maximizes the expected probability of detection.

Findings

The author found a set of look angles that globally maximize the probability of detection for a general class of mirror symmetric targets.

Research limitations/implications

The optimal strategies only maximize the probability of detection and not the probability of identification.

Practical implications

In the context of a search and detection operation, there is only a limited time to find the target before life is lost; hence, improving the chance of detection will in real terms be translated into the difference between success or failure, life or death. This rich field of study can be applied to mine countermeasure operations to make sure that the areas of operations are free of mines so that naval operations can be conducted safely.

Originality/value

There are two novel elements in this paper. First, the author determine the set of globally optimal look angles that maximize the probability of detection. Second, the author introduce the phenomenon of concordance between sensor images.

Details

Journal of Defense Analytics and Logistics, vol. 5 no. 2
Type: Research Article
ISSN: 2399-6439

Keywords

Open Access
Book part
Publication date: 28 May 2019

Siri Boe-Lillegraven

We currently know little about how transferring can be accomplished when source- and target environments only have little in common. This chapter utilizes the case of EuroCo and…

Abstract

We currently know little about how transferring can be accomplished when source- and target environments only have little in common. This chapter utilizes the case of EuroCo and AsiaCo to account for how a transfer of interrelated routines across multiple boundaries unfolds. A pragmatic and flexible approach to transferring, where coordinating actors attended to replication and adaptation as means rather than ends, is illuminated. Notably, coordinators split their work into smaller chunks by focusing on artifacts, people, and actions. As pressures to progress the transfer increased, they conceived of new ideas for performances and put the ideas to use along three trajectories focused on embedding, embodying, and enacting routines. Eventually, they blended performances from each trajectory back together into a new overarching notion of what was to be transferred. In elaborating on and discussing these findings, the chapter contributes to literature on routine transfer. Boundary conditions and avenues for future research are discussed.

Details

Routine Dynamics in Action: Replication and Transformation
Type: Book
ISBN: 978-1-78756-585-2

Keywords

Open Access
Article
Publication date: 12 August 2022

Bolin Gao, Kaiyuan Zheng, Fan Zhang, Ruiqi Su, Junying Zhang and Yimin Wu

Intelligent and connected vehicle technology is in the ascendant. High-level autonomous driving places more stringent requirements on the accuracy and reliability of environmental…

Abstract

Purpose

Intelligent and connected vehicle technology is in the ascendant. High-level autonomous driving places more stringent requirements on the accuracy and reliability of environmental perception. Existing research works on multitarget tracking based on multisensor fusion mostly focuses on the vehicle perspective, but limited by the principal defects of the vehicle sensor platform, it is difficult to comprehensively and accurately describe the surrounding environment information.

Design/methodology/approach

In this paper, a multitarget tracking method based on roadside multisensor fusion is proposed, including a multisensor fusion method based on measurement noise adaptive Kalman filtering, a global nearest neighbor data association method based on adaptive tracking gate, and a Track life cycle management method based on M/N logic rules.

Findings

Compared with fixed-size tracking gates, the adaptive tracking gates proposed in this paper can comprehensively improve the data association performance in the multitarget tracking process. Compared with single sensor measurement, the proposed method improves the position estimation accuracy by 13.5% and the velocity estimation accuracy by 22.2%. Compared with the control method, the proposed method improves the position estimation accuracy by 23.8% and the velocity estimation accuracy by 8.9%.

Originality/value

A multisensor fusion method with adaptive Kalman filtering of measurement noise is proposed to realize the adaptive adjustment of measurement noise. A global nearest neighbor data association method based on adaptive tracking gate is proposed to realize the adaptive adjustment of the tracking gate.

Details

Smart and Resilient Transportation, vol. 4 no. 2
Type: Research Article
ISSN: 2632-0487

Keywords

Open Access
Article
Publication date: 31 August 2023

Lilian M. de Menezes and Ana B. Escrig-Tena

This paper aims to improve our understanding of performance measurement systems in the health and care sector, by focussing on employee reactions to core performance measurement…

1646

Abstract

Purpose

This paper aims to improve our understanding of performance measurement systems in the health and care sector, by focussing on employee reactions to core performance measurement practices. Targets and monitoring are hypothesised to be associated with employee perceptions of job control, supportive management and job demands, which in turn, are expected to be linked to employee-wellbeing and organisational commitment.

Design/methodology/approach

Matched employee workplace data are extracted from a nationally representative and publicly available survey. Structural equation models are estimated.

Findings

Performance measurement systems are neither perceived as resources nor additional demands. Setting many targets and a focus on productivity can lead to negative employee outcomes, since these positively correlate with perceptions of job demands, which negatively correlate with employee wellbeing. However, monitoring financial performance and monitoring employee performance may be helpful to managers, as these are positively associated with employee perceptions of job control and supportive management, which positively correlate with job satisfaction and organisational commitment and, negatively, with anxiety. Overall, common criticisms of performance measurement systems in healthcare are questioned.

Originality/value

Given the lack of consensus on how performance measurement systems can influence employee experiences and outcomes, this study combines theories that argue for performance measurement systems in managing operations with models developed by psychologists to describe how perceptions of the work conditions can affect employee attitude and wellbeing. A conceptual model is therefore developed and tested, and potential direct and indirect effects of performance measurement systems in the health sector are inferred.

Details

International Journal of Operations & Production Management, vol. 43 no. 13
Type: Research Article
ISSN: 0144-3577

Keywords

Open Access
Article
Publication date: 14 August 2017

Sebastian Zenker and Erik Braun

City branding has gained popularity as governance strategy. However, the academic underpinning is still poor, and city branding needs a more critical conceptualization, as well as…

16147

Abstract

Purpose

City branding has gained popularity as governance strategy. However, the academic underpinning is still poor, and city branding needs a more critical conceptualization, as well as more complex management systems. This paper challenges the use of a “one size fits all” city brand, which is still common practice in many places. The paper proposes that city branding involves much more complexity than is commonly thought and outlines a strategy that enables urban policy-makers, marketing researchers and (place) marketers alike to better deal with city branding.

Design/methodology/approach

The authors integrate insights from literature on place branding, brand architecture and customer-focused marketing.

Findings

The article argues that place brands (in general and communicated place brands in particular) are by definition very complex, due to their different target groups, diverse place offerings and various associations place customers could have. Thus, an advanced brand management including target group-specific sub-brands is needed.

Practical implications

The model will be helpful for place brand managers dealing with a diverse target audience, and is likely to improve the target group-specific communication.

Originality/value

The paper provides an insight into the complexity of city brands and acknowledges that the perception of city brands can differ considerably among different target groups. Additionally, it offers a more comprehensive definition of place brands. This will be helpful for city brand managers and researchers alike in dealing with city brand complexity.

Details

Journal of Place Management and Development, vol. 10 no. 3
Type: Research Article
ISSN: 1753-8335

Keywords

Content available
Article
Publication date: 7 December 2021

Aaron von Felbert and Christoph Breuer

Endorsement research has focused primarily on determining the effectiveness of single endorsers, whereas marketing practice shows that companies usually engage multiple endorsers…

2250

Abstract

Purpose

Endorsement research has focused primarily on determining the effectiveness of single endorsers, whereas marketing practice shows that companies usually engage multiple endorsers to promote their brands and products. As academic evidence for multiple endorsers is limited and extant findings are ambiguous, the purpose of this study is to determine the influence of different multiple endorser combinations on consumers' purchase intentions for a sports-related product endorsement and to identify whether endorser-product congruence and consumers' involvement with the endorsed product moderate endorsers' influences.

Design/methodology/approach

Two-hundred thirty-three useful responses were collected to an online experiment, and endorsers' direct and indirect influences on consumers' purchase intentions were analyzed in serial mediation analyses. Potential moderating effects of endorser-product congruence and consumers' involvement with the endorsed product were tested in moderated regression analyses.

Findings

The study's findings show that using multiple endorsers has an overall positive influence on consumers' purchase intentions, which is mediated by their attitudes toward the advertisements and the endorsed brand. Endorser-product congruence moderates an endorsement's effectiveness, whereas a moderating effect of consumers' product involvement was not supported.

Originality/value

This study adds to the extant body of endorsement research by confirming the overall effectiveness of using multiple endorsers to influence consumers' intentions to purchase the endorsed product. In addition, by showing that endorser-product congruence determines endorsers' effectiveness in a multiple endorser context, the study extends the current research perspective and provides practical implications for marketing professionals on how to combine multiple endorsers.

Details

Sport, Business and Management: An International Journal, vol. 12 no. 4
Type: Research Article
ISSN: 2042-678X

Keywords

Open Access
Article
Publication date: 22 June 2021

Joshua Maine, Emilia Florin Samuelsson and Timur Uman

Drawing on paradox theory, this study explores how ambidextrous sustainability relates to organisational performance in hybrid organisations represented by Swedish municipal…

7177

Abstract

Purpose

Drawing on paradox theory, this study explores how ambidextrous sustainability relates to organisational performance in hybrid organisations represented by Swedish municipal housing corporations, and how this relationship is contingent on the organisational structure of these organisations.

Design/methodology/approach

The study relies on the data collected from Swedish municipal housing corporations. These data sources consist of a survey sent to the management team members in Swedish municipal housing corporations, financial and non-financial archival data on these corporations, interviews with the management team and board members, and observations of meetings involving the management team and board of directors at a Swedish municipal housing corporation. Quantitative data of the study were analysed using descriptive statistics, correlation analysis and linear multiple regression analysis. Qualitative data were analysed employing deductive thematic analysis and were used to illustrate and discuss the results of the quantitative analysis.

Findings

The quantitative findings show that ambidextrous sustainability, i.e. the alignment between an explorative orientation and an exploitative orientation towards sustainability, has a weakly positive relationship with financial performance and a positive relationship with social performance in hybrid organisations represented by Swedish municipal housing corporations. The study further shows that a high level of the structural element “connectedness” weakened the relationship between the ambidextrous sustainability and financial performance of the organisation in the study. In contrast, a lower level of connectedness reinforced and strengthened this relationship. Our qualitative material illustrates how the quantitative findings could be explained by the interaction between the board of directors and the management team of these hybrid organisations.

Originality/value

The study shows how ambidextrous sustainability, employed for conceptualisation of the sustainability strategy in hybrid organisations, represented by Swedish municipal housing corporations, can impact on facets of performance (i.e. financial, social and environmental) differently. The study further highlights the importance of organisational structures in these relationships in a hybrid context.

Details

Accounting, Auditing & Accountability Journal, vol. 35 no. 3
Type: Research Article
ISSN: 0951-3574

Keywords

Content available
Article
Publication date: 23 June 2021

Joe Garcia, Russell Shannon, Aaron Jacobson, William Mosca, Michael Burger and Roberto Maldonado

This paper aims to describe an effort to provide for a robust and secure software development paradigm intended to support DevSecOps in a naval aviation enterprise (NAE) software…

1324

Abstract

Purpose

This paper aims to describe an effort to provide for a robust and secure software development paradigm intended to support DevSecOps in a naval aviation enterprise (NAE) software support activity (SSA), with said paradigm supporting strong traceability and provability concerning the SSA’s output product, known as an operational flight program (OFP). Through a secure development environment (SDE), each critical software development function performed on said OFP during its development has a corresponding record represented on a blockchain.

Design/methodology/approach

An SDE is implemented as a virtual machine or container incorporating software development tools that are modified to support blockchain transactions. Each critical software development function, e.g. editing, compiling, linking, generates a blockchain transaction message with associated information embedded in the output of a said function that, together, can be used to prove integrity and support traceability. An attestation process is used to provide proof that the toolchain containing SDE is not subject to unauthorized modification at the time said critical function is performed.

Findings

Blockchain methods are shown to be a viable approach for supporting exhaustive traceability and strong provability of development system integrity for mission-critical software produced by an NAE SSA for NAE embedded systems software.

Practical implications

A blockchain-based authentication approach that could be implemented at the OFP point-of-load would provide for fine-grain authentication of all OFP software components, with each component or module having its own proof-of-integrity (including the integrity of the used development tools) over its entire development history.

Originality/value

Many SSAs have established control procedures for development such as check-out/check-in. This does not prove the SSA output software is secure. For one thing, a build system does not necessarily enforce procedures in a way that is determinable from the output. Furthermore, the SSA toolchain itself could be attacked. The approach described in this paper enforces security policy and embeds information into the output of every development function that can be cross-referenced to blockchain transaction records for provability and traceability that only trusted tools, free from unauthorized modifications, are used in software development. A key original concept of this approach is that it treats assigned developer time as a transferable digital currency.

Open Access
Article
Publication date: 27 May 2022

Sangho Chae, Byung-Gak Son, Tingting Yan and Yang S. Yang

This study investigates the extent to which structural equivalence between acquiring and target firms is associated with post-merger and acquisition (M&A) performance—a…

2592

Abstract

Purpose

This study investigates the extent to which structural equivalence between acquiring and target firms is associated with post-merger and acquisition (M&A) performance—a relationship that is proposed to be moderated by industry-level vertical relatedness between acquiring and target firms.

Design/methodology/approach

Applying social network analysis and regression, this study analyzes a buyer–supplier relationship network dataset of 279 M&A deals completed between 2010 and 2017 to test the hypotheses. Structural equivalence is measured as the proportion of common customers and suppliers between an acquiring firm and a target firm.

Findings

Supporting a view about the importance of supply chains in explaining M&As outcomes, the results suggest that the structural equivalence in the supplier network is positively associated with post-M&A firm performance. The results also show that the effect of the structural equivalence in the customer network is moderated by vertical relatedness between two merging firms (i.e. structural equivalence contributes to post-M&A performance when vertical industry relatedness is high).

Originality/value

This study contributes to the M&A and supply network literature by investigating the performance implications of structural equivalence in supplier and customer networks, demonstrating the importance of taking a supply chain view when explaining M&As outcomes. Specifically, the authors suggest considering structural equivalence as a new type of relatedness between merging firms (i.e. relatedness in network resources in explaining post-M&A performance). It also indicates how industry-level vertical resource relatedness, which is about relatedness in internal resources between the two firms, could interact with firm-level network resource relatedness, which is about relatedness in external supply chain resources between the two firms, in affecting post-M&A performance.

Details

International Journal of Operations & Production Management, vol. 42 no. 8
Type: Research Article
ISSN: 0144-3577

Keywords

1 – 10 of over 6000