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Article
Publication date: 8 June 2021

Xiao Chang, Xiaoliang Jia, Kuo Liu and Hao Hu

The purpose of this paper is to provide a knowledge-enabled digital twin for smart design (KDT-SD) of aircraft assembly line (AAL) to enhance the AAL efficiency…

Abstract

Purpose

The purpose of this paper is to provide a knowledge-enabled digital twin for smart design (KDT-SD) of aircraft assembly line (AAL) to enhance the AAL efficiency, performance and visibility. Modern AALs usually need to have capabilities such as digital-physical interaction and self-evaluation that brings significant challenges to traditional design method for AAL. The digital twin (DT) combining with reusable knowledge, as the key technologies in this framework, is introduced to promote the design process by configuring, understanding and evaluating design scheme.

Design/methodology/approach

The proposed KDT-SD framework is designed with the introduction of DT and knowledge. First, dynamic design knowledge library (DDK-Lib) is established which could support the various activities of DT in the entire design process. Then, the knowledge-driven digital AAL modeling method is proposed. At last, knowledge-based smart evaluation is used to understand and identify the design flaws, which could further improvement of the design scheme.

Findings

By means of the KDT-SD framework proposed, it is possible to apply DT to reduce the complexity and discover design flaws in AAL design. Moreover, the knowledge equips DT with the capacities of rapid modeling and smart evaluation that improve design efficiency and quality.

Originality/value

The proposed KDT-SD framework can provide efficient design of AAL and evaluate the design performance in advance so that the feasibility of design scheme can be improved as much as possible.

Details

Assembly Automation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0144-5154

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Article
Publication date: 5 June 2017

Zhouyang Lian, Zhengwei Luo, Lirui Yuan, Mulin Guo, Wuji Wei and Kuo Liu

This paper aims to evaluate diethylenetriamine (DETA) as an inhibitor on Q235 (Gr. D) steel in ammonia flue gas desulfurization (AFGD) system.

Abstract

Purpose

This paper aims to evaluate diethylenetriamine (DETA) as an inhibitor on Q235 (Gr. D) steel in ammonia flue gas desulfurization (AFGD) system.

Design/methodology/approach

This research was carried out by weight loss, electrochemical measurements, scanning electron microscopy and X-ray photoelectron spectrometry. The effects of DETA on crystallization of ammonium sulfate and its co-crystallization were also investigated by X-ray diffraction and infrared spectroscopy.

Findings

The inhibition efficiency of DETA reached a maximum value of 98.96 per cent. DETA is postulated to adsorb on Q235 steel surface, resulting in the formation of a protective film by the accumulation of many flat particles, and the thickness of protective film is 8 μm. DETA had no effect on the crystallization of ammonium sulfate product.

Originality/value

DETA can be used in AFGD system as an inhibitor to protect the equipment well.

Details

Anti-Corrosion Methods and Materials, vol. 64 no. 4
Type: Research Article
ISSN: 0003-5599

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Book part
Publication date: 3 February 2015

D. K. Malhotra, Rashmi Malhotra and Kathleen T. Campbell

As cable and satellite industry undergoes transformation in the 21st century with the onslaught of innovation-driven changes, it is important to know which company is…

Abstract

As cable and satellite industry undergoes transformation in the 21st century with the onslaught of innovation-driven changes, it is important to know which company is doing better and which company is falling behind. This study compares the relative performance of eight cable companies using three factors: operating expense for every dollar of operating revenue, earnings before interest, taxes, depreciation, and amortization, and return on assets. We also evaluate the performance of each firm against itself for the period 2010–2013 to see if they show improvement or deterioration in operating efficiency.

Details

Applications of Management Science
Type: Book
ISBN: 978-1-78441-211-1

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Article
Publication date: 2 December 2020

Ömer Oruç

The purpose of this paper is to obtain accurate numerical solutions of two-dimensional (2-D) and 3-dimensional (3-D) Klein–Gordon–Schrödinger (KGS) equations.

Abstract

Purpose

The purpose of this paper is to obtain accurate numerical solutions of two-dimensional (2-D) and 3-dimensional (3-D) Klein–Gordon–Schrödinger (KGS) equations.

Design/methodology/approach

The use of linear barycentric interpolation differentiation matrices facilitates the computation of numerical solutions both in 2-D and 3-D space within reasonable central processing unit times.

Findings

Numerical simulations corroborate the efficiency and accuracy of the proposed method.

Originality/value

Linear barycentric interpolation method is applied to 2-D and 3-D KGS equations for the first time, and good results are obtained.

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Article
Publication date: 2 June 2021

Amin K. Alsadi and Wassim J. Aloulou

Little previous research has investigated the relationships among strategic orientations, supply chain integration and firm performance. The purpose of this study is to…

Abstract

Purpose

Little previous research has investigated the relationships among strategic orientations, supply chain integration and firm performance. The purpose of this study is to advance a research model that examines the direct and indirect effects of strategic orientations via supply chain integration on firm performance in the Saudi transitional context.

Design/methodology/approach

This study is based on data collected from a survey using questionnaires completed by 187 top management members of Saudi firms from different sectors. To analyse the data and test the proposed hypotheses, confirmatory factor analysis and structural equation modelling were conducted using the AMOS statistical analysis package.

Findings

Results show that both market orientation and supply chain integration have a significant positive direct effect on Saudi firm performance. They also reveal that supply chain integration fully mediates the effect of technology orientation on firm performance, while partially mediating the effect of market orientation on firm performance.

Research limitations/implications

This study contributes to the literature by showing how SCI could serve as an organizational capability that links strategic resources to firm performance. The main limitation of this study is that it was not possible to generalize the findings. Future research perspectives were proposed to address this limitation and add new insights to the field.

Practical implications

The results could help decision-makers in Saudi firms choose the right strategic orientations and aid them in integrating their supply chains by sharing the necessary information and coordinating operations with key partners to enhance their firms' performance.

Originality/value

This study is one of the first to conduct such an investigation in the Saudi context. The study simultaneously examines the role of supply chain integration in linking strategic orientations to firm performance and fills a current research gap in such a transitional context.

Details

The International Journal of Logistics Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0957-4093

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Article
Publication date: 3 February 2012

De‐Shin Liu, Chang‐Lin Hsu, Chia‐Yuan Kuo, Ya‐Ling Huang, Kwang‐Lung Lin and Geng‐Shin Shen

The purpose of this paper is to present a novel high speed impact testing method for evaluating the effects of low temperatures on eutectic and lead‐free solder joints…

Abstract

Purpose

The purpose of this paper is to present a novel high speed impact testing method for evaluating the effects of low temperatures on eutectic and lead‐free solder joints. Interfacial cracking failure of Sn‐based and Pb‐free solders at subzero temperatures is of significant concern for electronic assemblies that operate in harsh environments.

Design/methodology/approach

This paper presents a newly designed low temperature control system coupled with an Instron micro‐impact testing machine, which offers a package level test for solder bumps, and that is used at subzero temperature ranges as low as −40°C. This study examined the failure characteristics of 63Sn‐37Pb (Sn37Pb) and 96.5Sn‐3Ag‐0.5Cu (SAC305) solder joints at temperatures ranging from room temperature (R.T.) to −40°C, and at impact speeds of 1 m/s.

Findings

Three types of failure mode were identified: M1 interfacial fracture with no residual solder remaining on the pad (interfacial cracking); M2 interfacial fracture with residual solder persisting on the pad (mixed mode failure); and M3 solder ball fracture (bulk solder cracking). The experimental results indicated that the energy to peak load for both types of solders decreased significantly, by approximately 35 percent to 38 percent when the test temperature was reduced from R.T. to −40°C. In addition, the peak load of the Sn37Pb solder joint increased noticeably with a decreasing test temperature. However, the peak load of the SAC305 specimen remained virtually unchanged with a reduction in the temperature. The Sn37Pb solder joints failed in an M3 failure mode under all the considered testing temperatures. The SAC305 solder joints displayed both M1 and M2 failure modes at R.T.; however, they failed almost exclusively in M1 mode at the lowest test temperature of −40°C.

Originality/value

This paper presents a novel technique for evaluating high‐speed impact strength and energy absorbance of Sn‐based and Pb‐free solders at the chip level within a low temperature control system. To overcome the drawbacks experienced in other studies, this study focused specifically on cryo‐impact testing systems and the performed experimental steps to improve the accuracy of post‐test analysis.

Details

Soldering & Surface Mount Technology, vol. 24 no. 1
Type: Research Article
ISSN: 0954-0911

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Article
Publication date: 28 October 2014

Pak-Lok Poon, Fei-Ching Kuo, Huai Liu and Tsong Yueh Chen

An alarming number of spreadsheet faults have been reported in the literature, indicating that effective and easy-to-apply spreadsheet testing techniques are not available…

Abstract

Purpose

An alarming number of spreadsheet faults have been reported in the literature, indicating that effective and easy-to-apply spreadsheet testing techniques are not available for “non-technical,” end-user programmers. The purpose of this paper is to alleviate the problem by introducing a metamorphic testing (MT) technique for spreadsheets.

Design/methodology/approach

The paper discussed four common challenges encountered by end-user programmers when testing a spreadsheet. The MT technique was then discussed and how it could be used to solve the common challenges was explained. An experiment involving several “real-world” spreadsheets was performed to determine the viability and effectiveness of MT.

Findings

The experiment confirmed that MT is highly effective in spreadsheet fault detection, and yet MT is a general technique that can be easily used by end-user programmers to test a large variety of spreadsheet applications.

Originality/value

The paper provides a detailed discussion of some common challenges of spreadsheet testing encountered by end-user programmers. To the best of the authors knowledge, the paper is the first that includes an empirical study of how effective MT is in spreadsheet fault detection from an end-user programmer's perspective.

Details

Information Technology & People, vol. 27 no. 4
Type: Research Article
ISSN: 0959-3845

Keywords

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Article
Publication date: 8 January 2021

Jose Alemany, Elena Del Val and Ana María García-Fornes

Online social networks (OSNs) provide users with mechanisms such as social circles and individual selection to define the audiences (i.e., privacy policy) of the shared…

Abstract

Purpose

Online social networks (OSNs) provide users with mechanisms such as social circles and individual selection to define the audiences (i.e., privacy policy) of the shared information. This privacy decision-making process is a hard and tedious task for users because they have to assess the cost-benefit in a complex environment. Moreover, little is known about how users assess the cost-benefit of matching the elements of online communication and their interests. Therefore, the purpose of this paper is to develop and test a research model to understand the impact that the types of receivers and the sensitivity of messages have on privacy decisions.

Design/methodology/approach

A study was conducted to understand how users evaluate the cost-benefit of the disclosure action in online social networks for the different types of receivers identified and the sensitivity of the message. Data from 400 respondents was collected and analyzed using partial least squares modeling.

Findings

The findings of this study demonstrated a trade-off variance between the perceived cost-benefit and the disclosure of sensitive information with different receiver types. Disclosing personal information with trusted receivers, influencer receivers and receivers from the circle of coworkers had a positive significant effect on social capital building. Conversely, disclosing personal information with receivers from the circle of family or unknown receivers had a significant negative effect on social capital building and even a significant positive effect on privacy concerns.

Originality/value

Recent literature has documented the increasing interest of the research community in understanding users' concerns and interests in making the most suitable privacy decisions. However, most researchers have worked on understanding the disclosure action from a user-centered perspective and have not considered all of the elements of online communication. This study puts the focus on all of the elements of communication during disclosure actions, taking into account the properties of the message and receivers and the impact on users' cost benefit value.

Details

Internet Research, vol. 31 no. 4
Type: Research Article
ISSN: 1066-2243

Keywords

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Book part
Publication date: 30 September 2020

Shivinder Nijjer, Kumar Saurabh and Sahil Raj

The healthcare sector in India is witnessing phenomenal growth, such that by the year 2022, it will be a market worth trillions of INR. Increase in income levels…

Abstract

The healthcare sector in India is witnessing phenomenal growth, such that by the year 2022, it will be a market worth trillions of INR. Increase in income levels, awareness regarding personal health, the occurrence of lifestyle diseases, better insurance policies, low-cost healthcare services, and the emergence of newer technologies like telemedicine are driving this sector to new heights. Abundant quantities of healthcare data are being accumulated each day, which is difficult to analyze using traditional statistical and analytical tools, calling for the application of Big Data Analytics in the healthcare sector. Through provision of evidence-based decision-making and actions across healthcare networks, Big Data Analytics equips the sector with the ability to analyze a wide variety of data. Big Data Analytics includes both predictive and descriptive analytics. At present, about half of the healthcare organizations have adopted an analytical approach to decision-making, while a quarter of these firms are experienced in its application. This implies the lack of understanding prevalent in healthcare sector toward the value and the managerial, economic, and strategic impact of Big Data Analytics. In this context, this chapter on “Predictive Analytics in Healthcare” discusses sources, areas of application, possible future areas, advantages and limitations of the application of predictive Big Data Analytics in healthcare.

Details

Big Data Analytics and Intelligence: A Perspective for Health Care
Type: Book
ISBN: 978-1-83909-099-8

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Article
Publication date: 20 April 2012

Susana Pérez‐López and Joaquin Alegre

The purpose of this paper is to analyze the impact of information technology (IT) competency on knowledge management processes and the relations among IT competency…

Abstract

Purpose

The purpose of this paper is to analyze the impact of information technology (IT) competency on knowledge management processes and the relations among IT competency, knowledge management processes and performance outcomes.

Design/methodology/approach

The study uses survey data from 162 managers and structural equation modeling to assess the links between IT competency, knowledge management processes and firm performance.

Findings

First, this study finds that IT competency plays a critical role in knowledge management processes. Second, knowledge management processes are directly related to market performance, which, in turn, is directly related to financial performance. Third, no direct relation exists between IT competency and firm performance. Knowledge management processes mediate the relation between IT competency and market performance.

Research limitations/implications

The research is cross‐sectional, so cause‐effect relations cannot be definitively inferred from the results.

Practical implications

The findings indicate that managers should not only focus on allocating sufficient resources for IT investments. To achieve better performance, these technologies need to be used to support the development of the knowledge management processes.

Originality/value

This study contributes to knowledge management research, identifying a key antecedent of knowledge management processes – IT competency – and analyzing the link between knowledge management processes and performance. Moreover, this study is relevant to IT literature because it shows that IT competency, on its own, is insufficient to generate and maintain a competitive advantage. Firms need complementary strategic capabilities such as knowledge management to strengthen the effect of IT competency on firm performance.

Details

Industrial Management & Data Systems, vol. 112 no. 4
Type: Research Article
ISSN: 0263-5577

Keywords

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