Search results

1 – 10 of 24
Per page
102050
Citations:
Loading...
Available. Open Access. Open Access
Article
Publication date: 31 May 2018

Jae-Seung Baek, June Sam Ha and Sang Whi Lee

In this paper, we examine whether fund market reactions are affected by the characteristics of categorized features of fund. To investigate the goal of the paper, we consider…

39

Abstract

In this paper, we examine whether fund market reactions are affected by the characteristics of categorized features of fund. To investigate the goal of the paper, we consider macroeconomic factors as well as financial characters. We classify fund flow into four groups depending upon type of fund and fund characters to determine which category is better to increase fund flow for capital market after these financial occurrence. In this regard, our research suggests important evidence about the effect of financial factor on fund flow with a case of an detailed situation in Emerging market. In order to test the hypothesis, we use seemingly unrelated regression (SUR) model to choose significant factors among various types of fund market-related changes. Our sample consisted of fund flows from 2006 to 2016 collected by Korean Financial Association and Bank of Korea. The empirical results are summarized as follows : First, we find that capital market index, exchange rate affect fund flows with time-lagged value changes. Second, the stock index fund and banking sector fund sales show strong positive relations with the fund flow changes. Third, values of the fund flow are significantly related with fund sales by asset management’s affiliated financial institution. These results are consistent with the hypotheses that the increase and decrease in the fund flows due to capital market situation are more pronounced as the financial factors fit. Our results suggest that it is necessary to consider the fundamental characteristics of fund flow changes as well as the external economic environment to get a more efficient market performance and supervision.

Details

Journal of Derivatives and Quantitative Studies, vol. 26 no. 2
Type: Research Article
ISSN: 2713-6647

Keywords

Available. Open Access. Open Access
Article
Publication date: 30 November 2015

Myeong-Hoon Yeom and Jae-Seung Baek

This study focused on the Korea ETF which is listed and traded in NYSE (New York stock exchange) and analyzed empirically the price discovery effect of NYSE Korea ETF on the…

19

Abstract

This study focused on the Korea ETF which is listed and traded in NYSE (New York stock exchange) and analyzed empirically the price discovery effect of NYSE Korea ETF on the Korean stock market. There was almost no related research even though the Korea ETF listed in NYSE did not only show high correlation with the Korean stock market but also was often used as a predictive tool of the Korean stock market by investors.

The significance of this study is in conducting a price discovery analysis on the Korea ETF traded in NYSE by using sample data of ‘iShares MSCI South Korea Capped (symbol: EWY)' of the most abundant liquidity among Korea ETF traded in NYSE. Also, the Korea ETF traded at in Korean nighttime is the spot trading, but since the KOSPI200 nighttime futures are the derivatives trading, there is an implication that the price discovery effect between spot market and derivatives market can be compared by comparing each price discovery effect.

Details

Journal of Derivatives and Quantitative Studies, vol. 23 no. 4
Type: Research Article
ISSN: 2713-6647

Keywords

Available. Open Access. Open Access
Article
Publication date: 31 August 2013

Myeonghoon Yeom, Jae-Seung Baek and Doojin Ryu

This paper investigates investment and hedging strategies using the KOSPI200 nighttime futures product which was launched at November 16th, 2009. To examine the performance of the…

11

Abstract

This paper investigates investment and hedging strategies using the KOSPI200 nighttime futures product which was launched at November 16th, 2009. To examine the performance of the investment strategies, we analyze one-minute transaction data of KOSPI200 daytime and nighttime futures from November 17th, 2009 to December 6th, 2012.

Our empirical results are as follows: First, the investment strategies using the nighttime futures significantly outperform the investment strategies based only on the daytime futures. Second, the investment and hedging strategies using the KOSPI200 nighttime futures are quite effective when investors have positions in the ETFs. Third, the empirical performance of the investment strategies using the nighttime futures is significantly related to volatility shocks. The strategies are more effective when the market is volatile.

Details

Journal of Derivatives and Quantitative Studies, vol. 21 no. 3
Type: Research Article
ISSN: 2713-6647

Keywords

Access Restricted. View access options
Article
Publication date: 1 February 1997

Jay Liebowitz, Vijaya Krishnamurthy, Ira Rodens, Chapman Houston, Alisa Liebowitz, Seung Baek, Joe Radko, Janet Zeide and William Potter

Describes some of the authors’ experiences in managing a two‐year expert scheduling system project called GUESS (Generically Used Expert Scheduling System), developed for NASA…

766

Abstract

Describes some of the authors’ experiences in managing a two‐year expert scheduling system project called GUESS (Generically Used Expert Scheduling System), developed for NASA. Many expert systems are technical successes, but technology transfer failures. Part of the reason that some expert system projects fail is due to management issues. First discusses the GUESS project and then highlights some lessons learned on managing an expert systems project based on the GUESS experience.

Details

Kybernetes, vol. 26 no. 1
Type: Research Article
ISSN: 0368-492X

Keywords

Access Restricted. View access options
Article
Publication date: 1 February 1998

Carl Moore, Seung Baek, Jay Liebowitz, LTC Robert Kilmer and Robert Minehart

An intelligent agent‐based information warfare advisor is being developed for the Strategic Crisis Exercise at the US Army War College. This paper will provide some background on…

536

Abstract

An intelligent agent‐based information warfare advisor is being developed for the Strategic Crisis Exercise at the US Army War College. This paper will provide some background on intelligent agents and will then describe the proposed architecture for building this intelligent agent‐based information warfare (IW) advisor (called “Bob‐in‐a‐box” ‐ named after our IW domain expert, Bob Minehart).

Access Restricted. View access options
Article
Publication date: 11 May 2015

Seung Ik Baek and Young Min Kim

The purpose of this paper is to explore the dynamics of an online community by examining its participants’ centrality measures: degree, closeness, and the betweenness centrality…

1000

Abstract

Purpose

The purpose of this paper is to explore the dynamics of an online community by examining its participants’ centrality measures: degree, closeness, and the betweenness centrality. Each centrality measure shows the different roles and positions of an individual participant within an online community. To be specific, this research examines how an individual participant’s role and position affects her/his information sharing activities within an online community over time. Additionally, it investigates the differences between two different online communities (a personal interest focussed community and a social interest focussed community), in terms of the interaction patterns of participants.

Design/methodology/approach

For this research, the authors collected log files from Korean online discussion communities (café.naver.com) using a crawler program. A social network analysis was used to explore the interaction patterns of participants and calculate the centrality measures of individual participants. Time series cross-sectional analysis was used to analyze the effects of the roles and the positions on their information sharing activities in a longitudinal setting.

Findings

The results of this research showed that all three centrality measures of an individual participant in previous time periods positively influenced his/her information sharing activity in the current periods. In addition, this research found that, depending on the nature of the discussion issues, the participants showed different interaction patterns. Throughout this research, the authors explored the interaction patterns of individual participants by using a network variable, the centrality, within a large online community, and found that the interaction patterns provided strong impact on their information sharing activities in the following months.

Research limitations/implications

To investigate the changes of participant’s behaviors, this study simply relies on the numbers of comments received and posted without considering the contents of the comments. Future studies might need to analyze the contents of the comments exchanged between participants, as well as the social network among participants.

Practical implications

Online communities have developed to take a more active role in inviting public opinions and promoting discussion about various socio-economic issues. Governments and companies need to understand the dynamics which are created by the interactions among many participants. This study offers them a framework for analyzing the dynamics of large online communities. Furthermore, it helps them to respond to online communities in the right way and in the right time.

Social implications

Online communities do not merely function as a platform for the free exchange and sharing of personal information and knowledge, but also as a social network that exerts massive influence in various parts of society including politics, economy, and culture. Now online communities become playing an important role in our society. By examining communication or interaction behaviors of individual participants, this study tries to understand how the online communities are evolved over time.

Originality/value

In the area of online communities, many previous studies have relied on the subjective data, like participant’s perception data, in a particular time by using survey or interview. However, this study explores the dynamics of online communities by analyzing the vast amount of data accumulated in online communities.

Details

Industrial Management & Data Systems, vol. 115 no. 4
Type: Research Article
ISSN: 0263-5577

Keywords

Access Restricted. View access options
Article
Publication date: 2 May 2017

Jong Gyu Park, Jeong Sik Kim, Seung Won Yoon and Baek-Kyoo Joo

The purpose of this paper is to investigate the effect of empowering leadership on employees’ psychological well-being (PWB) and job engagement. This study also examines the…

7754

Abstract

Purpose

The purpose of this paper is to investigate the effect of empowering leadership on employees’ psychological well-being (PWB) and job engagement. This study also examines the mediating role of psychological capital (PsyCap) in these relationships.

Design/methodology/approach

The study draws on survey data (n=285) from employees in eight large-sized firms in South Korea. Confirmatory factor analysis was conducted to examine the convergent validity of the construct measures. Structural equation modeling was used to estimate the fit of the hypothesized model to the data.

Findings

The authors found that empowering leadership influenced job engagement both directly and indirectly through PsyCap. Employees’ PsyCap fully mediated the relationship between empowering leadership and employees’ PWB, while partially mediating the relationship between empowering leadership and job engagement.

Originality/value

This is the first empirical study to examine the effects of empowering leadership behaviors of leaders on both PWB and PsyCap, which are positive psychological resources of employees. The study has also provided empirical evidence for the importance of PsyCap, which plays a positive role in the ability of employees to manage their overall feelings in achievement situations and in employees’ engagement in the workplace.

Details

Leadership & Organization Development Journal, vol. 38 no. 3
Type: Research Article
ISSN: 0143-7739

Keywords

Access Restricted. View access options
Article
Publication date: 20 July 2021

Yoon Jeong Baek, Seung-Hyun Kim, Sayup Kim, Eui-Sang Yoo and Joo-Young Lee

The purpose of the present study was to evaluate the effect of air mattress pressure on sleep quality.

279

Abstract

Purpose

The purpose of the present study was to evaluate the effect of air mattress pressure on sleep quality.

Design/methodology/approach

Ten young healthy males participated in all hard surface [AH], shoulder soft [SS] and shoulder and hip soft mattress [SHS] conditions. The surface pressure for SS and SHS were set at their preferred levels.

Findings

The results showed that sleep efficiencies were over 95% for all the three conditions; there were no significant differences in individual sleep variables among the three conditions, but overall sleep quality was better for SS than AH (p = 0.065); heart rates during sleep was greater for AH than the other two conditions (p < 0.1); and a stronger relationship between clothing and bed microclimate humidity were found for SS and SHS than that for AH.

Research limitations/implications

These results indicated that the both pressure relief air mattresses that were set at their own preferred levels provided high quality sleep with no marked differences.

Practical implications

Air pressure relief mattresses can improve sleep quality of healthy individuals during sleep at night. The results can be used to understand appropriate pressure distribution on surface mattress according to body region, and also to develop algorithms to provide optimum sleep using mattresses with surface pressure control by body region.

Originality/value

The present study found that the shoulder and/or hip pressure relief air mattresses that were set at their own preferred levels provided high quality sleep with no marked differences.

Details

International Journal of Clothing Science and Technology, vol. 34 no. 2
Type: Research Article
ISSN: 0955-6222

Keywords

Access Restricted. View access options
Article
Publication date: 13 July 2021

Shahbaz Sharif, Rab Nawaz Lodhi, Khurshed Iqbal and Fahad Saddique

This study aims to use an authentic leadership style to explore that whether male or female leadership of private academic institutions highly influences affective organizational…

726

Abstract

Purpose

This study aims to use an authentic leadership style to explore that whether male or female leadership of private academic institutions highly influences affective organizational commitment and tacit knowledge sharing among the library teachers. Additionally, this study encompasses the trust of library teachers and justifies whether the trust under male or female leadership highly moderates the effect on tacit knowledge sharing.

Design/methodology/approach

By using structural equation modeling, this study tests two leadership models (e.g. male and female leadership models). Using a convenient sampling approach, the researcher collects data from library teachers of private academic institutions in district Sheikhupura, Pakistan through face-to-face interaction. The study administered 650 survey questionnaires among the library teachers; however, 403 questionnaires were answered validly and reliably. The response rate was 62%.

Findings

The study found the direct and indirect effect of authentic leadership on affective organizational commitment and tacit knowledge sharing however, male authentic leadership influence on affective organizational commitment and tacit knowledge sharing was quite higher than female authentic leadership. Resultantly, the library teachers were more committed to sharing tacit knowledge under male leadership than female. Nevertheless, the moderating role of trust was found in female leadership but not in male leadership. Simply, the library teachers under male leadership were hesitant to trust others, so the chain of sharing hidden ideas and image of libraries was not found in male leadership.

Practical implications

Private academic institutions need authentic leaders to shape the knowledge economy of libraries and the structure of the academic institutions. For this reason, this study provides practical implications for managers that male leadership should be hired in academic institutions because it has a higher influence on librarians’ commitment and tacit knowledge sharing among peers as compare to female leadership.

Originality/value

To the best of the authors’ knowledge, this was the first study that differentiates the capabilities and skills of male and female authentic leadership in private academic institutions. Further, it suggests hiring male leaders in these institutions.

Details

International Journal of Organizational Analysis, vol. 30 no. 5
Type: Research Article
ISSN: 1934-8835

Keywords

Access Restricted. View access options
Article
Publication date: 29 April 2014

Kang Hyouk Lee, Seung Geon Hong, Myung Ki Baek, Hong Soon Choi, Young Sun Kim and Il Han Park

– The purpose of this paper is to present a new numerical technique, called adaptive level set method, for use with the finite element method.

182

Abstract

Purpose

The purpose of this paper is to present a new numerical technique, called adaptive level set method, for use with the finite element method.

Design/methodology/approach

A conventional level set method using the smeared Heaviside function has been employed for shape and topology optimizations. The smeared Heaviside function yields an indistinct interface boundary, and so can increase computational time and cause numerical errors. The adaptive level set method does not use the smeared Heaviside function. To coincide with the material interface, it processes the zero level as the boundary data of element meshing.

Findings

Usefulness and accuracy of shape optimization using the adaptive level set method are shown by comparison to the conventional level set method. A shape optimization procedure using the adaptive level set method is introduced. Numerical examples are employed to explain how the adaptive level set method is applied.

Originality/value

The adaptive level set method is proposed to relieve the interface problem of the conventional level set method. Shape variation in the optimization is calculated from the continuum sensitivity analysis.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 33 no. 3
Type: Research Article
ISSN: 0332-1649

Keywords

1 – 10 of 24
Per page
102050