Ying-Chung Chen, Tsung-Hsien Yang and Siu-Tong Choi
This paper aims to study a dynamic analysis of a double-helical geared rotor system with oil-film bearing.
Abstract
Purpose
This paper aims to study a dynamic analysis of a double-helical geared rotor system with oil-film bearing.
Design/methodology/approach
A finite element model of a double-helical geared rotor system with oil-film bearing is developed, in which a rigid mass is used to represent the gear and the Timoshenko beam finite element represents the shaft; the equations of motion are obtained by applying Lagrange’s equation. Natural frequencies, Campbell diagram, lateral responses, axial responses, bearing stiffness coefficients, bearing damping coefficients and bearing force are investigated.
Findings
Natural frequencies and Campbell diagram of a double-helical geared rotor system with oil-film bearing are investigated. An increased helical angle enhanced the axial response of the system and reduced its lateral response. The distance between the node and bearing affected the lateral response magnitude on the node. The farther away the gear pair was from the central part of the shaft, the higher the system’s resonance frequency became. The different gear pair position has a significant influence on the bearing stiffness coefficient and bearing force, but it just has a little effect on the bearing damping coefficient.
Practical implications
The model of a double-helical geared rotor system with oil-film bearing is established in this paper. The dynamic characteristics of a double-helical geared rotor system with oil-film bearing are investigated. The numerical results of this study can be used as a reference for subsequent personnel research.
Originality/value
Although the dynamics characteristics of geared rotor bearing system have been reported in some literature, the dynamic analysis of a double-helical geared rotor-bearing system is still rarely investigated. This paper showed some novel results that lateral and axial response results are obtained by the different helical angle and different gear positions. In the future, it makes valuable contributions for further development of dynamic analysis of a double-helical geared rotor-bearing system.
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Lee Shin‐Ping and Chuang Tsung‐Hsien
The main purpose of this paper is to examine the determinants and interrelations between corporate ownership structure and corporate performance.
Abstract
Purpose
The main purpose of this paper is to examine the determinants and interrelations between corporate ownership structure and corporate performance.
Design/methodology/approach
The ownership of institutional investors are classified into government institutional ownership, financial institutional ownership, securities investment trust funds ownership, incorporated companies ownership, and other institutional ownership, so as to facilitate a detailed study. Ten‐year (1994‐2003) panel data of 569 Taiwanese listed companies are examined. Furthermore, this study applies the F‐test, LM‐test and Hausman test to determine the best statistical method (ordinary least squares method, fix effects model or random effects method).
Findings
The results show an inverse “U‐shaped” relationship between insider ownership and corporate performance. Government institutional ownership and incorporated companies ownership are found to have a significant negative correlation with corporate performance. However, securities investment trust funds and corporate performance are positively correlated.
Practical implications
These findings provide Taiwanese listed companies with a insights on how to improve their corporate control mechanisms. These results can also serve as a useful reference for companies and the academics concerning future competitive strategies and decision making.
Originality/value
This study further incorporates the ratio of mortgaged/pledged shares of directors and supervisors and different institutional ownership to analyze how the mechanisms of corporate governance function in Taiwan's industries, and whether these mechanisms can effectively lower agency problems to enhance corporate performance.
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Tsung-Hsien Kuo and Han-Kuang Tien
This study aims to establish a new model that elucidates the mechanism behind the long-term effects of creativity training. Previous studies have only explored influential…
Abstract
Purpose
This study aims to establish a new model that elucidates the mechanism behind the long-term effects of creativity training. Previous studies have only explored influential positive factors when examining the transfer mechanism of creativity training. However, the transfer mechanism must encompass the negative factors of creative abrasion due to temporal dynamics.
Design/methodology/approach
The authors performed a two-phase survey of 284 trainees participating in the survey. During the first phase, 48 h of creativity training was provided to the advertising agency staff. Six months later, the second phase was performed. Researchers have conducted follow-up studies on the long-term effects of creativity training. The hypotheses were tested using structural equation modeling.
Findings
Based on the results, the mechanism behind the long-term effect of creativity training is as follows: motivation to learn, transfer design and transfer climate positively influence motivation to transfer (MTT), while MTT positively impacts overall individual performance. However, creative abrasion negatively affects MTT and individual performance.
Originality/value
Creative abrasion must be considered when the long-term effect of creativity training is explored, because it reduces the long-term effect of creativity training on trainees. Creative energy from one-time creativity training will be gradually worn away because of the abrasion caused by teamwork, group thinking and self-gratification.
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Li‐An Ho, Tsung‐Hsien Kuo and Binshan Lin
The purpose of this study is to propose a conceptual structural equation model to, first, investigate the relationships among knowledge management (KM) system quality, employees'…
Abstract
Purpose
The purpose of this study is to propose a conceptual structural equation model to, first, investigate the relationships among knowledge management (KM) system quality, employees' self‐perceived social identification, trust at workplace as well as online knowledge sharing behaviors, and, second, demonstrate the direct and indirect effect of social identification and trust at workplace on online knowledge sharing from the perspective of KM system quality.
Design/methodology/approach
A questionnaire was distributed to 437 full‐time employees (n=437) from three technology companies in Taiwan. These companies have had years of experience in implementing KM systems. Data were analyzed by employing structural equation modeling.
Findings
The results show that: social identification and trust at workplace have a mediating effect on online knowledge sharing within organizations; trust at workplace is the stronger mediator than social identification; social identification has a positive and significant impact on trust at workplace; and there is significant correlation between KM system quality and social identification as well as trust.
Practical implications
Based on these findings, organizations in Taiwan that aim to maximize the effectiveness and efficiency of KM systems should find ways to enhance employees' self‐awareness on social identification and trust in the workplace.
Originality/value
The conceptual model provides useful information for managers to enhance knowledge sharing through the formation of social identification and promotion of trust at workplaces.
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The purpose of this paper is to look at the relationships among factors which result in improved knowledge sharing, through the empirical validation of a theoretical model…
Abstract
Purpose
The purpose of this paper is to look at the relationships among factors which result in improved knowledge sharing, through the empirical validation of a theoretical model consisting of three dimensions: expected benefit in relation to knowledge sharing, trust at workplace, and employee knowledge‐sharing behavior.
Design/methodology/approach
This study targets three technological companies with a total of employees exceeding 1,500 (n=563), utilizing a survey questionnaire as the data collection instrument to test the relationship among the three dimensions. The structural equation modeling approach is used to test the proposed model.
Findings
The results show that trust at workplace has a mediating effect on organizational knowledge‐sharing behavior. It is also discovered that there is significant correlation between expected personal benefit through sharing knowledge and the development of trust at workplace.
Originality/value
This study contributes empirical data to the predominantly theoretical literature by offering a deeper understanding of the mediating effect of trust on employee's expected benefit for the purpose of knowledge exchange behavior within teams and among teams.
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Rakesh Mishra and Sheeba Kapil
This paper aims to explore the relationship of promoter ownership and board structure with firm performance for Indian companies.
Abstract
Purpose
This paper aims to explore the relationship of promoter ownership and board structure with firm performance for Indian companies.
Design/methodology/approach
Corporate governance structures of 391 Indian companies out of CRISIL NSE Index (CNX) 500 companies listed on national stock exchange (NSE) have been studied for their impact on performance of companies. Panel data regression methodology has been used on data for five financial years from 2010 to 2014 for the selected companies. Performance measures considered are market-based measure (Tobin’s Q) and accounting-based measure (return on assets [ROA]).
Findings
The empirical findings indicate that market-based measure (Tobin’s Q) is more impacted by corporate governance than accounting-based measure. There is significant positive association between promoter ownership and firm performance. It is also indicated that the relationship between promoter ownership and firm performance is different at different levels of promoter ownership. Board size is found to be positively related to ROA; however, board independence is not found to be related to any of the performance measures.
Research limitations/implications
Limitations of the study are in terms of data methodology and possible omission of some variables. It is felt that endogeneity and reverse causality might be better addressed using simultaneous equation methodology.
Originality/value
The paper adds to the emerging body of literature on corporate governance performance relationship in Indian context using a reasonably wider and newer data set.
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Chin‐Yen Lin and Tsung‐Hsien Kuo
This paper seeks to propose a conceptual structural equation model to investigate the relationships among human resource management (HRM), organizational learning (OL), knowledge…
Abstract
Purpose
This paper seeks to propose a conceptual structural equation model to investigate the relationships among human resource management (HRM), organizational learning (OL), knowledge management capability (KMC) and organizational performance (OP) and to demonstrate the direct and indirect effect of HRM on OP from the perspectives of KMC and OL.
Design/methodology/approach
An empirical study is conducted in financial training centers in Taiwan and the collected survey data are used to test the relationships among the four dimensions expressed in the proposed structural equation model.
Findings
The results show that HRM has a direct and significant impact on OL and KMC. HRM influences OP indirectly through OL and KMC. In addition, OL and KMC have direct and significant influences on OP.
Research limitations/implications
Only data from Taiwan were collected. Therefore, the results may not be easily generalized to other areas or countries, but are useful for managers' reference, especially for those whose circumstances are similar to those in Taiwan.
Practical implications
The conceptual structural equation model provides useful information for managers to enhance OP through the adoption of appropriate HRM, OL and KMC policies.
Originality/value
The study demonstrates how HRM indirectly impacts OP and illustrates the paths of influence through either OL or KMC.
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Tsung‐Hsien Kuo, Li‐An Ho, Ya‐Jung Wu and Chien‐Ting Lin
The purpose of this paper is to look at factors which result in improved attitudinal outcome (AO) through the proposal and empirical validation of a theoretical model. The model…
Abstract
Purpose
The purpose of this paper is to look at factors which result in improved attitudinal outcome (AO) through the proposal and empirical validation of a theoretical model. The model incorporates four major self‐perceived dimensions: personality traits (PTs), job characteristics (JCs), transformational leadership behaviors (LBs), and AOs.
Design/methodology/approach
This is a quantitative research using a survey questionnaire as data collecting instrument. Data collected from ten technological companies located in the Neihu Science Park in Taiwan (n=221) were analyzed using structural equation modeling.
Findings
Results reveal that both personal traits and JCs have positive yet insignificant effects on AOs. However, both factors significantly and indirectly influence AOs via transformational LBs.
Originality/value
This proposed model provides an overall framework which indicates how both intrinsic and extrinsic factors can affect the perception of LBs, which consequently plays a critical role in influencing employees emotionally. This structure has rarely been explored and the findings are particularly useful for management in helping to set leadership in a bigger context.
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Hung Nguyen and Norma Harrison
Nowadays, companies compete and win based on the capabilities they can leverage across their supply chains. With unpredictable and turbulent business environment, supply chains…
Abstract
Purpose
Nowadays, companies compete and win based on the capabilities they can leverage across their supply chains. With unpredictable and turbulent business environment, supply chains are seeking to customer knowledge as sources of competitive advantage. The purpose of this paper is to empirically test a conceptual framework to investigate the roles of customer leverage (CL) on process innovation and the relationships to performance.
Design/methodology/approach
Drawing upon the knowledge-based view, this study argues that CL is the sources of firms’ process innovation. This study also posits that process innovation mediates the relationship between CL and performance based on transaction cost economics. This empirical study employed 650 manufacturers across different regions.
Findings
This study showed that strong association exists between a manufacturing firm’s CL capability and its process innovation and performances. Process innovation play critical mediating roles in absorbing and transforming customer knowledge in supply chains. In a more dynamic market, CL strengthens the positive impacts on process innovation.
Research limitations/implications
This study further highlights the need to emphasize both strategic and CL capability in dynamic environments as these may be needed to enable the firm to seize market niches that may open up in such environments. Similarly, managers should emphasize CL capability and process changes in competitive environments as they are more difficult to imitate from competitors in regards of new product or services.
Practical implications
These results extend the limited existing research on global manufacturing context that the customer knowledge are effective sources for increasing innovative processes. The higher the market turbulence, the stronger the pressures for CL demanded by process innovation. The findings also confirm that process innovation plays a mediating role in absorbing and transforming customer knowledge in improving costs and financial measures. This is an important result that highlights the mechanism by which customer knowledge can influence a firm’s bottom line.
Originality/value
This study examined the linkages between a marketing concept and operations and supply chain management.
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Mahdi Salehi, Mohammad Tahervafaei and Hossein Tarighi
The purpose of this paper is to evaluate the relationship between the characteristics of the audit committee and the board and profitability among the companies listed on the…
Abstract
Purpose
The purpose of this paper is to evaluate the relationship between the characteristics of the audit committee and the board and profitability among the companies listed on the Tehran Stock Exchange (TSE) in Iran.
Design/methodology/approach
In this study, the companies listed on the TSE during the period from 2010 to 2015 are investigated. The Linear panel regression method is employed for this purpose. The independent variables of the study are composed of some corporate governance mechanisms including audit committee size, audit committee expertise, board size, board independence, chief executive officer (CEO) duality, and institutional ownership.
Findings
In spite of the fact that there does not exist any significant association between audit committee size and corporate financial performance, the results indicate that there is a positive and significant relationship between audit committee financial expertise and profitability. The authors found that the number of board members cannot affect corporate performance; moreover, duality of CEO role in Iranian companies does not affect company performance. However, the outcomes showed a positive and significant association between the proportion of outside directors on the board (board independence) and profitability at 99 percent confidence level. This implies that the role of non-executive directors in Iran is inconsistent with the stewardship theory. This is due to the fact that independent directors understand the status of business and market better than the board’s executive members. Finally, the results indicated that there is no significant association between institutional owners and Iranian companies’ performance.
Practical implications
The findings of this study will reveal more than ever the role of corporate governance mechanisms for society and users of financial statements because as tools on the CEO actions, they always have to pay attention to the implementation of corporate principles in the economic entity’ operation.
Originality/value
This is one of the most important studies that simultaneously examine the impacts of characteristics of the audit committee and the board on profitability in an emerging market, and the results of the study may give strength to Iranian as well other developing countries.