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Open Access
Article
Publication date: 31 May 2003

Jin U Park and Youngsoo Choi

This paper shows the limitation of the cost-of-carry model which is used for pricing the theoretical value of the KTB futures, and proposes an alternative pricing model based on…

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Abstract

This paper shows the limitation of the cost-of-carry model which is used for pricing the theoretical value of the KTB futures, and proposes an alternative pricing model based on the term structure of interest rates. Under the assumption of 1-factor term structure, this paper treats the theoretical price of KTB futures price as a risk-neutral expectation of payoff function at maturity and derives the approximated formula for pricing the KTB futures. As compared with our price of KTB futures using the term structure of interest rates, the conventional KOFEX price based on the cost-of-carry model tends to be overvalued as the time to maturity increases. This result is due to the difference between the futures and forward prices which is caused by treating the futures contract as the forward contract in the conventional KOFEX pricing model. In particular, this discrepancy becomes more significant when the price of underlying asset and the interest rates are negatively correlated and the time to maturity is longer. The bond futures contract is a typical example of financial instrument whose price has a negative correlation with interest rates

Details

Journal of Derivatives and Quantitative Studies, vol. 11 no. 1
Type: Research Article
ISSN: 2713-6647

Keywords

Article
Publication date: 25 July 2008

James Jungbae Roh, Paul Hong and Youngsoo Park

Critical information flows in the supply chain reflect the patterns of organizational culture and supply chain strategy (SCS). This paper aims to links organizational culture and…

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Abstract

Purpose

Critical information flows in the supply chain reflect the patterns of organizational culture and supply chain strategy (SCS). This paper aims to links organizational culture and SCS using competing values and an uncertainty framework.

Design/methodology/approach

Anchored at literature review on organizational culture and SCS, this paper presents a typology with four patterns of organizational culture with four types of corresponding SCS.

Findings

This paper presents diverse requirements for effective design of supply chain in that for each pattern of organizational culture, corresponding SCS is identified: efficient for hierarchical, risk‐hedging for group, responsive for rational, and agile for developmental culture.

Research limitations/implications

The exploratory nature of this study requires empirical research validation. Firms may use this research framework in design and evaluation of their supply chain management structure according to their organization's cultural elements and requirements.

Practical implications

Using this integrative framework business executives may better manage the informational infrastructures that reflect the rich dynamics between their particular organizational cultural traits and supply chain behavioral practices.

Originality/value

This paper expands the concept of organizational culture in the extended supply chain network context and identifies information strategy profiles.

Details

Journal of Enterprise Information Management, vol. 21 no. 4
Type: Research Article
ISSN: 1741-0398

Keywords

Article
Publication date: 18 April 2017

Heejung Ro, Eric D. Olson and Youngsoo Choi

This exploratory study aims to examine gay travelers’ travel psychographics (allocentricity and psychocentricity) in relation to openness about sexual orientation, collective…

Abstract

Purpose

This exploratory study aims to examine gay travelers’ travel psychographics (allocentricity and psychocentricity) in relation to openness about sexual orientation, collective self-esteem and socio-demographic variables.

Design/methodology/approach

A survey is developed and study participants are recruited from attendees at a large annual gay event. A total of 196 gay men were used as samples for correlation analysis and independent samples t-tests.

Findings

The findings suggest that collective self-esteem is positively correlated with allocentricity. Also, gay couples showed higher allocentricity than single gay men, and white/Caucasian gay men showed higher allocentricity than other ethnic minorities gay men. Yet, psychocentricity was higher for lower income gay men than higher income gay men.

Practical implications

Tourism marketers should recognize that the gay market is not as homogenous as it has been portrayed in the tourism literature. Hospitality service providers and destination marketers should be aware of the importance of the gay community, gay travelers’ psychographics and, more importantly, the diversity within the gay market to develop effective products and services to better position themselves in this niche market.

Originality/value

This research contributes to the tourism literature by enhancing the understanding of gay travelers’ socio-demographic profiles and their travel-related behaviors and perceptions.

Details

Tourism Review, vol. 72 no. 1
Type: Research Article
ISSN: 1660-5373

Keywords

Open Access
Article
Publication date: 10 September 2021

Jun Sik Kim and Sol Kim

This paper investigates a retrospective on the Journal of Derivatives and Quantitative Studies (JDQS) on its 30th anniversary based on bibliometric. JDQSs yearly publications…

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Abstract

This paper investigates a retrospective on the Journal of Derivatives and Quantitative Studies (JDQS) on its 30th anniversary based on bibliometric. JDQSs yearly publications, citations, impact factors, and centrality indices grew up in early 2010s, and diminished in 2020. Keyword network analysis reveals the JDQS's main keywords including behavioral finance, implied volatility, information asymmetry, price discovery, KOSPI200 futures, volatility, and KOSPI200 options. Citations of JDQS articles are mainly driven by article age, demeaned age squared, conference, nonacademic authors and language. In comparison between number of views and downloads for JDQS articles, we find that recent changes in publisher and editorial and publishing policies have increased visibility of JDQS.

Details

Journal of Derivatives and Quantitative Studies: 선물연구, vol. 29 no. 4
Type: Research Article
ISSN: 1229-988X

Keywords

Article
Publication date: 22 February 2024

Yuzhuo Wang, Chengzhi Zhang, Min Song, Seongdeok Kim, Youngsoo Ko and Juhee Lee

In the era of artificial intelligence (AI), algorithms have gained unprecedented importance. Scientific studies have shown that algorithms are frequently mentioned in papers…

186

Abstract

Purpose

In the era of artificial intelligence (AI), algorithms have gained unprecedented importance. Scientific studies have shown that algorithms are frequently mentioned in papers, making mention frequency a classical indicator of their popularity and influence. However, contemporary methods for evaluating influence tend to focus solely on individual algorithms, disregarding the collective impact resulting from the interconnectedness of these algorithms, which can provide a new way to reveal their roles and importance within algorithm clusters. This paper aims to build the co-occurrence network of algorithms in the natural language processing field based on the full-text content of academic papers and analyze the academic influence of algorithms in the group based on the features of the network.

Design/methodology/approach

We use deep learning models to extract algorithm entities from articles and construct the whole, cumulative and annual co-occurrence networks. We first analyze the characteristics of algorithm networks and then use various centrality metrics to obtain the score and ranking of group influence for each algorithm in the whole domain and each year. Finally, we analyze the influence evolution of different representative algorithms.

Findings

The results indicate that algorithm networks also have the characteristics of complex networks, with tight connections between nodes developing over approximately four decades. For different algorithms, algorithms that are classic, high-performing and appear at the junctions of different eras can possess high popularity, control, central position and balanced influence in the network. As an algorithm gradually diminishes its sway within the group, it typically loses its core position first, followed by a dwindling association with other algorithms.

Originality/value

To the best of the authors’ knowledge, this paper is the first large-scale analysis of algorithm networks. The extensive temporal coverage, spanning over four decades of academic publications, ensures the depth and integrity of the network. Our results serve as a cornerstone for constructing multifaceted networks interlinking algorithms, scholars and tasks, facilitating future exploration of their scientific roles and semantic relations.

Details

Aslib Journal of Information Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2050-3806

Keywords

Article
Publication date: 22 September 2008

Po‐Ju Chen and Youngsoo Choi

While many studies focusing on work values have been conducted, few of them were specifically focused on generational differences within the hospitality context. This study aims…

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Abstract

Purpose

While many studies focusing on work values have been conducted, few of them were specifically focused on generational differences within the hospitality context. This study aims to explore the structure of hospitality management work values and the perceived differences among three generations of managers and supervisors in the hospitality industry.

Design/methodology/approach

A survey of 398 managers and supervisors from hospitality organizations in the USA was conducted.

Findings

A total of 15 work values were identified along with their hierarchical order. A four‐dimensional (comfort and security, professional growth, personal growth, and work environment) work value structure shared by hospitality workforce and generational differences in work values of the hospitality industry were found.

Research limitations/implications

The findings of this study are limited to a managerial workforce of the hospitality industry in a US tourism destination.

Practical implications

Implications are drawn for industry to recruit and retain the managerial workforce using strategies designed to meet the preferences and needs perceived by three generations of managerial workforce.

Originality/value

There are three unique contributions: the uncovering of different priorities in work values across the three‐generation hospitality managers; the revelation of the four underlying dimensions of the structure of work values that represent the uniqueness of work values perceived by the hospitality managerial workforce; and the discovery of generational differences in work values in two of the four dimensions (i.e. personal growth and work environment) and the generational preference shift. These findings might contribute to the justification for different recruitment and retention strategies among various sectors of the hospitality industry according to generational value shifts.

Details

International Journal of Contemporary Hospitality Management, vol. 20 no. 6
Type: Research Article
ISSN: 0959-6119

Keywords

Article
Publication date: 2 March 2012

Sanja Kutnjak Ivković and Wook Kang

The purpose of this study is to examine the contours of police integrity among Korean police officers a decade after police reform was started.

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Abstract

Purpose

The purpose of this study is to examine the contours of police integrity among Korean police officers a decade after police reform was started.

Design/methodology/approach

The data were collected in 2009 at the Korean National Police University (KNPU) and the Police Comprehensive Academy (PCA). The questionnaires distributed to police officers contained 14 vignettes describing various forms of police misconduct. The sample consists of 329 police officers, mostly non‐supervisors, attending courses at the KNPU and PCA.

Findings

Results indicate that the contours of police integrity vary across different forms of misconduct. Regardless of whether the respondents' views were measured through questions about misconduct seriousness, appropriate discipline, willingness to report, or knowledge about official rules, the findings suggest that Korean police officers perceived corruption as a serious form of police misconduct, while they considered the use of excessive force to be substantially less serious. In addition, a strong code of silence among the police was detected.

Research limitations/implications

The study examines the contours of police integrity among a convenience sample of police officers from South Korea.

Practical implications

The Korean police administrators interested in controlling police misconduct could utilize this methodology to explore the contours of the code of silence among the Korean police. The results of the study indicate that substantial focus should be put on changing police officer views about the use of excessive force and narrowing the code of silence in general.

Social implications

The results show that the contours of police integrity among South Korean police officers clearly reflect the attitudes and views of the society at large toward corruption and use of excessive force. The lenient attitudes that South Korean police officers have expressed regarding the use of excessive force reflect both the historical attitudes and the lack of clarity of official rules. The strong code of silence is related to the insufficient protection for whistleblowers and the adherence to Confucianism among Korean citizens.

Originality/value

Prior research predominantly measured police integrity as the opposite of police corruption in Western democracies and East European countries in transition. This research expands this by focusing on different forms of police misconduct. In addition, it explores integrity in an Asian democracy with the police agency undergoing extensive reform.

Details

Policing: An International Journal of Police Strategies & Management, vol. 35 no. 1
Type: Research Article
ISSN: 1363-951X

Keywords

Content available
650

Abstract

Details

International Journal of Contemporary Hospitality Management, vol. 20 no. 6
Type: Research Article
ISSN: 0959-6119

Article
Publication date: 1 December 2016

David Grierson

This paper reviews the prospect of a radical redefinition of the relationship between society, technology, and Nature as posited within Paolo Soleri’s Arcology theory, and…

Abstract

This paper reviews the prospect of a radical redefinition of the relationship between society, technology, and Nature as posited within Paolo Soleri’s Arcology theory, and anticipates a transformative social order and environmental setting in support of sustainability as demonstrated within the urban laboratory Arcosanti. It locates the roots of Soleri's ecological architecture within a rejection of urban sprawl emerging from his early apprenticship with Frank Lloyd Wright at Taliesin West in Arizona, and argues that his own theoretical model, in presenting a fusion of architecture and ecology, prefigures a utopia of transcendence and offers a more rational planned response to the challenges of our age, while offering environmental movements a vision of what a sustainable urban future might look like. The paper argues that the positive utopian tendencies in Soleri’s work should be reaffirmed and, at the same time, it underlines an urgent need for multi-aspect and multi-disciplinary research, and postgraduate education, to be undertaken at Arcosanti, to test the parameters of micro- and macro-structures within alternative models of ecological design. In concluding the paper gives acknowledgement to the ongoing work of the Cosanti Foundation’s Board of Directors and its new Strategic Plan Steering Committee, and their commitment to attract renewed levels of financial and human resource in support of the urban laboratory’s unfinished business.

Details

Open House International, vol. 41 no. 4
Type: Research Article
ISSN: 0168-2601

Keywords

Article
Publication date: 1 December 2016

Karen Munro and David Grierson

The world’s urban population is rapidly growing, now exceeding its rural population, and is expected to reach 70% of the world’s total by 2050. Research in environmental…

Abstract

The world’s urban population is rapidly growing, now exceeding its rural population, and is expected to reach 70% of the world’s total by 2050. Research in environmental psychology increasingly supports the Biophilia Hypothesis which holds that our connection with Nature is innate. Thus, how do we maintain a human connection to Nature in an increasingly urbanising world? This paper is based on current research work and explores the boundary between built and natural environments, specifically how visual connectivity to Nature affects how people use social spaces, compared to spatial connectivity. Case study work is being undertaken at Arcosanti urban laboratory in the Arizona desert. Arcosanti construction began in 1970 to test Paolo Soleri’s Arcology Theory which proposes, in opposition to sprawling cities, a new form of urban setting which is compact with tightly restricted horizontal growth, leaving the surrounding natural environment as undeveloped “wilderness”. Through development of a Space/Nature Syntax methodology applied within a uniquely compact urban form, this research attempts to understand how designing to maintain the instinctive bond with Nature can affect social interaction and inform future design choices within built environments. This paper describes the development of, and basis for, the Space/Nature Syntax methodology, presents initial findings achieved through its recent application at Arcosanti, and outlines future work. Initial analysis indicates that visual connectivity to Nature is a significant influence on certain types of social interactions when compared to spatial connectivity, although more research is needed to verify the level of significance.

Details

Open House International, vol. 41 no. 4
Type: Research Article
ISSN: 0168-2601

Keywords

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