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Article
Publication date: 1 August 2002

Sang‐Hoon Kong, Jaehong Park, Young‐Geun Han, Gibom Kim and Kyo‐Il Lee

This paper presents an Internet‐based virtual machining system which applies virtual manufacturing technology to machining processes of CNC machining center. The system is…

Abstract

This paper presents an Internet‐based virtual machining system which applies virtual manufacturing technology to machining processes of CNC machining center. The system is implemented to execute digital machining and verification, to transmit the NC code data to related machining centers after confirming the properness of virtual machining, and to manipulate the machine through the Internet. Also, this research proposes a basic structure that can monitor the status of machines via the Internet. By applying simulation techniques for machining processes, a simple manipulation and monitoring system of machining centers is realized. This entire system is constructed by adopting the latest information technology such as object‐oriented method, middleware, Internet programming, and client‐server structure.

Details

Integrated Manufacturing Systems, vol. 13 no. 5
Type: Research Article
ISSN: 0957-6061

Keywords

Open Access
Article
Publication date: 29 February 2016

Sang Hoon Kang and Seong-Min Yoon

This paper investigates the impact of structural breaks on volatility spillovers between Asian stock markets (China, Hong Kong, India, Indonesia, Japan, Korea, Singapore, and…

11

Abstract

This paper investigates the impact of structural breaks on volatility spillovers between Asian stock markets (China, Hong Kong, India, Indonesia, Japan, Korea, Singapore, and Taiwan) and the oil futures market. To this end, we apply the bivariate DCC-GARCH model to weekly spot indices during the period 1998-2015. The results reveal significant volatility transmission for the pairs between the Asian stock and oil futures markets. Moreover, we find a significant variability in the time-varying conditional correlations between the considered markets during both bullish and bearish markets, particularly from early 2007 to the summer of 2008. Using the modified ICSS algorithm, we find several sudden changes in these markets with a common break date centred on September 15, 2008. This date corresponds to the collapse of Lehman Brothers which is considered as our breakpoint to define the global financial crisis. Also, we analyse the optimal portfolio weights and time-varying hedge ratios based on the estimates of the multivariate DCC-GARCH model. The results emphasize the importance of overweighting optimal portfolios between Asian stock and the oil futures markets.

Details

Journal of Derivatives and Quantitative Studies, vol. 24 no. 1
Type: Research Article
ISSN: 2713-6647

Keywords

Article
Publication date: 25 August 2021

Walid Mensi, Ramzi Nekhili, Xuan Vinh Vo and Sang Hoon Kang

This paper examines dynamic return spillovers and connectedness networks among international stock exchange markets. The authors account for asymmetry by distinguishing between…

Abstract

Purpose

This paper examines dynamic return spillovers and connectedness networks among international stock exchange markets. The authors account for asymmetry by distinguishing between positive and negative returns.

Design/methodology/approach

This paper employs the spillover index of Diebold and Yilmaz (2012) to measure the volatility spillover index for total, positive and negative volatility.

Findings

The results show time-varying and asymmetric volatility spillovers among the stock markets under investigation. During the coronavirus disease 2019 (COVID-19) pandemic, bad volatility spillovers are more pronounced and dominated over good volatility spillovers, indicating contagion effects.

Originality/value

The presence of confirmed COVID-19 cases positively (negatively) affects the good and bad spillovers under low and intermediate (upper) quantiles. Both types of spillovers at various quantiles agree also influenced by the number of COVID-19 deaths.

Details

International Journal of Emerging Markets, vol. 18 no. 9
Type: Research Article
ISSN: 1746-8809

Keywords

Article
Publication date: 2 September 2019

Shenghua Zhou, S. Thomas Ng, Sang Hoon Lee, Frank J. Xu and Yifan Yang

In the architecture, engineering and construction (AEC) industry, technology developers have difficulties in fully understanding user needs due to the high domain knowledge…

Abstract

Purpose

In the architecture, engineering and construction (AEC) industry, technology developers have difficulties in fully understanding user needs due to the high domain knowledge threshold and the lack of effective and efficient methods to minimise information asymmetry between technology developers and AEC users. The paper aims to discuss this issue.

Design/methodology/approach

A synthetic approach combining domain knowledge and text mining techniques is proposed to help capture user needs, which is demonstrated using building information modelling (BIM) apps as a case. The synthetic approach includes the: collection and cleansing of BIM apps’ attribute data and users’ comments; incorporation of domain knowledge into the collected comments; performance of a sentiment analysis to distinguish positive and negative comments; exploration of the relationships between user sentiments and BIM apps’ attributes to unveil user preferences; and establishment of a topic model to identify problems frequently raised by users.

Findings

The results show that those BIM app categories with high user interest but low sentiments or supplies, such as “reality capture”, “interoperability” and “structural simulation and analysis”, should deserve greater efforts and attention from developers. BIM apps with continual updates and of small size are more preferred by users. Problems related to the “support for new Revit”, “import & export” and “external linkage” are most frequently complained by users.

Originality/value

The main contributions of this work include: the innovative application of text mining techniques to identify user needs to drive BIM apps development; and the development of a synthetic approach to orchestrating domain knowledge, text mining techniques (i.e. sentiment analysis and topic modelling) and statistical methods in order to help extract user needs for promoting the success of emerging technologies in the AEC industry.

Details

Engineering, Construction and Architectural Management, vol. 27 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

Book part
Publication date: 28 September 2023

Georgiana Ioana Tircovnicu and Camelia-Daniela Hategan

The need for an efficient enterprise risk management (ERM) has never been greater than today when organisations face complex and interconnected risks targeting their business…

Abstract

The need for an efficient enterprise risk management (ERM) has never been greater than today when organisations face complex and interconnected risks targeting their business models. Macroeconomics and geopolitical uncertainties, digital transformations of industries and sectors, cybersecurity, and climate change, among other trends, present significant uncertainties. This article aims to analyse the scientific papers on research specific to ERM and review the links between the researched area and market or corporate governance topics. Risk management is underdeveloped in many organisations; the current standard for risk management is a reactive approach. It is usually treated in isolation rather than as a core competency and a strategic asset. As a result, risk management processes are ineffective and seen as adding value to decision-making and responding to uncertainties. Based on the literature, the scope is to set up the framework for future research on ERM by building a bibliometric analysis and examining articles collected from the Web of Science Core Collection database. The study identified the essential research on this topic based on the citations of the papers and the author’s countries with the highest number of publications and citations. VOSviewer software analysed the ERM system based on keywords, citations, geographical distribution, and authorships. The research proves a strong connection between the ERM and corporate governance topics considering the stage where most countries are regarding this subject.

Details

Digital Transformation, Strategic Resilience, Cyber Security and Risk Management
Type: Book
ISBN: 978-1-80455-254-4

Keywords

Article
Publication date: 17 July 2007

Sang Hoon Bae

The study seeks to examine the relationship between the implementation of the ISO 9000 quality management system and educational outcomes of schools, measured by student…

1909

Abstract

Purpose

The study seeks to examine the relationship between the implementation of the ISO 9000 quality management system and educational outcomes of schools, measured by student achievement on the state‐mandated tests and school attendance rates – graduation rates, in the case of high schools.

Design/methodology/approach

The study was conducted using schools in the USA that have implemented ISO 9000. The study employed the Hierarchical Linear Modeling (HLM) technique, taking into account the hierarchically nested data structure of this study.

Findings

It was found that: first, there is no relationship between ISO 9000 participation and students' learning outcomes on the state‐mandated tests – both for students in general and economically disadvantaged students in particular, across math and reading, and at all school levels; second, standardization of schooling by ISO 9000 fails to decrease the negative influence of school SES on the overall student achievement of a school; and finally, although ISO 9000 participation is not related to the students' graduation rates in high schools, it is positively associated with the students' school attendance rates in elementary and middle schools.

Practical implications

Given the long‐established institutional features of education such as value‐orientation, diversity, and complexity, ISO 9000, focusing on procedural standardization of classroom activities, may not work well as a quick‐fix solution to improve student learning.

Originality/value

The study suggests that, by helping schools become organized and thus function well in the area of essential school operations such as student and teacher attendance, ISO 9000 could positively influence school performance without threatening other important values such as teachers' professional autonomy and creativity in classrooms.

Details

Quality Assurance in Education, vol. 15 no. 3
Type: Research Article
ISSN: 0968-4883

Keywords

Article
Publication date: 31 October 2023

Siong Min Foo, Nazrul Hisyam Ab Razak, Fakarudin Kamarudin, Noor Azlinna Binti Azizan and Nadisah Zakaria

This study comprehensively aims to review the key influential and intellectual aspects of spillovers between Islamic and conventional financial markets.

Abstract

Purpose

This study comprehensively aims to review the key influential and intellectual aspects of spillovers between Islamic and conventional financial markets.

Design/methodology/approach

The study uses the bibliometric and content analysis methods using the VOSviewer software to analyse 52 academic documents derived from the Web of Sciences (WoS) between 2015 and June 2022.

Findings

The results demonstrate the influential aspects of spillovers between Islamic and conventional financial markets, including the leading authors, journals, countries and institutions and the intellectual aspects of literature. These aspects are synthesised into four main streams: research between stock indexes; studies between stock indexes, oil and precious metal; works between Sukuk, bond and indexes; and empirical studies review. The authors also propose future research directions in spillovers between Islamic and conventional financial markets.

Research limitations/implications

Our study is subject to several limitations. Firstly, the authors only used the WoS database. Secondly, the study only includes papers and reviews written in English from the WoS. This study assists academic scholars, practitioners and regulatory bodies in further exploring the suggested issues in future studies and improving and predicting economic and financial stability.

Originality/value

To the best of the authors’ knowledge, no extant empirical studies have been conducted in this area of research interest.

Details

Journal of Islamic Accounting and Business Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1759-0817

Keywords

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