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Book part
Publication date: 16 December 2009

Yanqin Fan and Sang Soo Park

In this paper, we study partial identification of the distribution of treatment effects of a binary treatment for ideal randomized experiments, ideal randomized…

Abstract

In this paper, we study partial identification of the distribution of treatment effects of a binary treatment for ideal randomized experiments, ideal randomized experiments with a known value of a dependence measure, and for data satisfying the selection-on-observables assumption, respectively. For ideal randomized experiments, (i) we propose nonparametric estimators of the sharp bounds on the distribution of treatment effects and construct asymptotically valid confidence sets for the distribution of treatment effects; (ii) we propose bias-corrected estimators of the sharp bounds on the distribution of treatment effects; and (iii) we investigate finite sample performances of the proposed confidence sets and the bias-corrected estimators via simulation.

Details

Nonparametric Econometric Methods
Type: Book
ISBN: 978-1-84950-624-3

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Book part
Publication date: 23 September 2019

Yi-Ming Wei, Qiao-Mei Liang, Gang Wu and Hua Liao

Abstract

Details

Energy Economics
Type: Book
ISBN: 978-1-83867-294-2

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Article
Publication date: 6 February 2017

Fan Wu, Ya-Han Hu and Ping-Rong Wang

Most academic libraries provide book recommendation services to enable readers to recommend books to the libraries. To facilitate decision-making in book acquisition, this…

Abstract

Purpose

Most academic libraries provide book recommendation services to enable readers to recommend books to the libraries. To facilitate decision-making in book acquisition, this study aimed to develop a method to determine the ranking of the recommended books based on the recommender network.

Design/methodology/approach

The recommender network was conducted to establish relationships among book recommenders and their similar readers by using circulation records. Furthermore, social computing techniques were used to evaluate the degree of representativeness of the recommenders and subsequently applied as a criterion to rank the recommended books. Empirical studies were performed to demonstrate the effectiveness of the proposed ranking system. The Spearman’s correlation coefficients between the proposed ranking system and the ranking obtained using reader circulation statistics were used as performance measure.

Findings

The ranking calculated using the proposed ranking mechanism was highly and moderately correlated to the ranking obtained using reader circulation statistics. The ranking of recommended books by the librarians was moderately and poorly correlated to the ranking calculated using reader circulation statistics.

Practical implications

The book recommender can be used to improve the accuracy of book recommendations.

Originality/value

This study is the first that considers the recommender network on library book acquisition. The results also show that the proposed ranking mechanism can facilitate effective book-acquisition decisions in libraries.

Details

The Electronic Library, vol. 35 no. 1
Type: Research Article
ISSN: 0264-0473

Keywords

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Article
Publication date: 5 October 2018

Fan Wu, Yung-Ting Chuang and Hung-Wei Lai

The purpose of this paper is to present a system that analyzes trustworthiness and ranks applications to improve the search experience.

Abstract

Purpose

The purpose of this paper is to present a system that analyzes trustworthiness and ranks applications to improve the search experience.

Design/methodology/approach

The system adopts pointwise mutual information to calculate comment semantics. It examines subjective (signed opinions, anonymous opinions and star ratings) and objective factors (download numbers, reputation ratings) before filtering, ranking and displaying). The authors invited three experts to check three categories and compared the results using Spearman and two statistics.

Findings

A high correlation between the proposed system and the expert ranking system suggests that the system can act as decision support.

Research limitations/implications

First, the authors have only tested the correlation between the proposed system and an expert ranking system; user satisfaction was not evaluated. The authors plan to conduct a later survey to gather user feedback. Second, the ranking system evaluates applications using fixed weights and disregards time. Therefore, in the future, the authors plan to enable their system to weight recent records over older ones.

Practical implications

User discussion forums, although helpful, have drawbacks. Not all reviews are trustworthy, and forums provide no filtering mechanisms to combat information overload. The solution to this is the authors’ system that crawls a forum, filters information, analyzes the trustworthiness of each comment and ranks the application for the user.

Originality/value

This paper develops a formula to analyze the trustworthiness of opinions, enabling the system to act as decision support when no professional advice is available.

Details

The Electronic Library, vol. 36 no. 5
Type: Research Article
ISSN: 0264-0473

Keywords

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Article
Publication date: 6 January 2021

Ing-Chung Huang, Pey-Lan Du, Li-Fan Wu, Jennet Achyldurdyyeva, Li-Chang Wu and Chih Seng Lin

The purpose of this paper is to report the findings of a study that examines the influence of leader–member exchange (LMX) on employees' turnover intention and…

Abstract

Purpose

The purpose of this paper is to report the findings of a study that examines the influence of leader–member exchange (LMX) on employees' turnover intention and presenteeism with the mediating role of perceived organizational support in the context of the semiconductor industry.

Design/methodology/approach

An empirical study based on a sample of 124 department managers and 241 team members in five high-tech companies in Taiwan. Structural equation modelling analysis was used for hypothesis testing.

Findings

The results reveal that perceived organization support significantly relates to employees' turnover intention and mediates the relationship between LMX and turnover intention. Additionally, employees' presenteeism is influenced by perceived LMX.

Practical implications

The results of the study are of high importance for high-tech companies, which continuously strive for innovation efficiency and sustainability. Managers and practitioners could benefit from better understanding regarding the importance of perceived organization support and LMX in affecting employee behaviours and company performance.

Originality/value

The present study finds a significant positive relationship between LMX and presenteeism, which is contrary to the previous research.

Details

Leadership & Organization Development Journal, vol. 42 no. 2
Type: Research Article
ISSN: 0143-7739

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Article
Publication date: 12 February 2018

Jun Wu, Fenglei Ni, Yuanfei Zhang, Shaowei Fan, Qi Zhang, Jiayuan Lu and Hong Liu

This paper aims to present a smooth transition adaptive hybrid impedance control for compliant connector assembly.

Abstract

Purpose

This paper aims to present a smooth transition adaptive hybrid impedance control for compliant connector assembly.

Design/methodology/approach

The dynamics of the manipulator is firstly presented with linear property. The controller used in connector assembly is inspired by human operation habits in similar tasks. The hybrid impedance control is adopted to apply force in the assembly direction and provide compliance in rest directions. The reference trajectory is implemented with an adaptive controller. Event-based switching strategy is conducted for a smooth transition from unconstrained to constrained space.

Findings

The method can ensure both ideal compliance behaviour with dynamic uncertainty and a smooth transition from unconstrained to constrained space. Also, the method can ensure compliant connector assembly with a good tolerance to the target estimation error.

Practical implications

The method can be applied in the connector assembly by “pushing” operation. The controller devotes efforts on force tracking and smooth transition, having potential applications in contact tasks in delicate environment.

Originality/value

As far as the authors know, the paper is original in providing a uniform controller for improving force and position control performance in both unconstrained and constrained space with dynamic uncertainty. The proposed controller can ensure a smooth transition by only adjusting parameters.

Details

Industrial Robot: An International Journal, vol. 45 no. 2
Type: Research Article
ISSN: 0143-991X

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Article
Publication date: 30 September 2019

Emmanuel Kwadzo Katani

The purpose of this paper is to forecast the future trend of Ghana’s total energy consumption (GTEC) using two grey models, which are GM(1,1) and the grey Verhulst model.

Abstract

Purpose

The purpose of this paper is to forecast the future trend of Ghana’s total energy consumption (GTEC) using two grey models, which are GM(1,1) and the grey Verhulst model.

Design/methodology/approach

The paper employs the use of Even model GM(1,1) and the grey Verhulst model to forecast GTEC for the next five years. Since various models were used, the margin for error is minimal, hence resulting in a better choice for forecasting the future. The forecast reveals that the GTEC for the next five years will increase rapidly.

Findings

The results reveal that the models can be used accurately to predict the total energy consumption smoothly. This will aid the government of Ghana to take necessary measures such as transforming the economic development pattern and enhancing the energy utilization efficiency since future patterns of energy consumed can be predicted.

Research limitations/implications

This research is meaningful to the government and all stakeholders in Ghana to help develop and appreciate the energy sector and its economic impact. This research is going to help government put in measures for efficient utilization of energy since results reveal an increase in energy consumption.

Practical implications

Research results could be used for development of the energy sector through managerial and economic decision making.

Originality/value

Ghana is a developing country and has great prospects in terms of boosting or resourcing its energy sector to meet future demands. The successfully explored models could aid the government of Ghana to formulate policies in the energy sector and generate future consumption plans.

Details

Grey Systems: Theory and Application, vol. 9 no. 4
Type: Research Article
ISSN: 2043-9377

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Article
Publication date: 19 March 2021

Jennet Achyldurdyyeva, Li-Fan Wu and Nurbibi Datova

The purpose of this study is to examine the aspects of workplace environment and the experiences of LGBT (lesbian, gay, bisexual and transgender) employees in an Asian…

Abstract

Purpose

The purpose of this study is to examine the aspects of workplace environment and the experiences of LGBT (lesbian, gay, bisexual and transgender) employees in an Asian context; a subject that has hitherto been somewhat neglected. It responds to a call for more contextual research in the field of employment diversity in organizational management in general.

Design/methodology/approach

This is a mixed method study, which utilizes multiple sources of primary and secondary data and consists of in-depth personal interviews, a survey of LGBT employees, published data (including legislation and state policies), reports issued by social and media organizations, documentary evidence from Taiwanese companies and insights drawn from the existing literature.

Findings

It was found that there is an interplay between the macro, meso and micro levels in the multilevel relational framework applied to diversity of employment in Taiwan. Macrolevel factors, such as supportive legislation, mass media and social tolerance toward LGBT community positively affect mesolevel factors, such as stable and secure social networks among the LGBT community in the form of legal and social organizations (NGOs, social media, bars, restaurants, etc.) as well as many companies inclusion of sexual orientation in their definitions of diversity. However, this is opposed by macrolevel, cultural values related to family structure and intergenerational relationships that inhibit pro-active integration and equality of LGBT individuals at the meso organizational level. Companies headed by older-generation leadership can be slow to advocate, support and promote sexual-orientation diversity in their workplaces. In contrast, microlevel data shows that LGBT employees receive robust psychological support from their peer group, friends and the LGBT community, although gaining acceptance by family and coworkers remains a challenge.

Research limitations/implications

Future studies need to focus on the dynamics of the meso- and microlevel factors by investigating how organizational structure, perspectives of leaders and HR managers, diversity management practices and attitudes and behaviors of LGBT employees and other coworkers affect development and integration of sexual-orientation diversity programs within organizations.

Practical implications

Managers, policy makers in organization as well as educators benefit from the context-sensitive findings and recommendations offered in this paper.

Social implications

Understanding of LGBT individuals employment environment helps to facilitate or hinder the positive development of equal society and benefit both LGBT employees, their coworkers and managers.

Originality/value

Limited research exists on the LGBT employees experiences at work in Asia. This study makes unique contribution to the understanding of sexual orientation category of diversity at work in Taiwan context.

Details

Equality, Diversity and Inclusion: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-7149

Keywords

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Article
Publication date: 11 March 2019

Li-Fan Wu, Ing-Chung Huang, Wei-Chang Huang and Pey-Lan Du

Innovation is a key factor in assessing organizational success. The purpose of this paper is to examine how the organizational culture and operations strategy impact…

Abstract

Purpose

Innovation is a key factor in assessing organizational success. The purpose of this paper is to examine how the organizational culture and operations strategy impact organizational innovation. It explores the influence of various combinations of organizational cultures and operations strategies on a firm’s ability to innovate both in process and product.

Design/methodology/approach

A conceptual model is developed which attempts to explain how the reciprocal and dynamic interactive relationship between organizational culture and operations strategy and innovation is structured. In total, 233 valid questionnaires were collected from 17 small- and medium-sized enterprises (SMEs) in Taiwan. Structural equation modeling was used to investigate the direction and strengths of the relationships and develop a comprehensive picture to illustrate the drivers of successful innovation.

Findings

The analysis and conclusions confirm the suitability of Culture–Strategy–Innovation Model and the detailed results demonstrate that a combination of innovative organizational culture and flexibility-oriented operations strategy has the strongest influence on a firm’s innovation process thereby improving their innovative organizational outcomes.

Practical implications

Although based on Taiwanese manufacturing industries these results provide useful insights for manufacturing industries in general. In alternative contexts, the combination of different dimensions of culture and strategy can be expected to cause different levels of success in innovation. This study provides robust evidence to explain the organizational climate needed to guide the innovative and flexibility considerations needed for SMEs in the manufacturing industry.

Originality/value

This is an empirical study which specifically investigates the activities of SMEs in the metal/plastic manufacturing industry in Taiwan and in particular examines organizational culture, operations strategies and innovation. The research model proposed and confirmed offers a new multi-dimensional structure of culture and strategy linked with their various related dynamic interrelationships and the drivers that impact organizational innovation.

Details

Journal of Organizational Change Management, vol. 32 no. 2
Type: Research Article
ISSN: 0953-4814

Keywords

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Book part
Publication date: 30 May 2018

Francesco Moscone, Veronica Vinciotti and Elisa Tosetti

This chapter reviews graphical modeling techniques for estimating large covariance matrices and their inverse. The chapter provides a selective survey of different models…

Abstract

This chapter reviews graphical modeling techniques for estimating large covariance matrices and their inverse. The chapter provides a selective survey of different models and estimators proposed by the graphical modeling literature and offers some practical examples where these methods could be applied in the area of health economics.

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