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Open Access
Article
Publication date: 30 July 2020

Minyeon Han, Dong-Hyun Lee and Hyoung-Goo Kang

This paper aims to replicate 148 anomalies and to examine whether the performance of the Korean market anomalies is statistically and economically significant. First, the authors…

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Abstract

This paper aims to replicate 148 anomalies and to examine whether the performance of the Korean market anomalies is statistically and economically significant. First, the authors observe that only 37.8% anomalies in the universe of the KOSPI and the KOSDAQ and value-weighted portfolios have t-statistics that exceed 1.96. When the authors impose a higher threshold (an absolute value of t-statistics of 2.78), only 27.7% of the 148 anomalies survive. Second, microcaps have large impacts. The results vary significantly depending on whether the sample included stocks in the KOSDAQ and whether value-weighted or equal-weighted portfolios are used. The results suggest that data mining explains large portion of abnormal returns. Any tactical asset allocation strategies based on market anomalies should be applied very cautiously.

Details

Journal of Derivatives and Quantitative Studies: 선물연구, vol. 28 no. 2
Type: Research Article
ISSN: 2713-6647

Keywords

Article
Publication date: 1 February 2002

Sang T. Choe and Kelly D. Huff

North Korea is moving in the direction of an open market as China did a generation ago. With a substantial population of 22 million, the country has abundant natural resources and…

Abstract

North Korea is moving in the direction of an open market as China did a generation ago. With a substantial population of 22 million, the country has abundant natural resources and an affordable labor force that are attractive to contract manufacturers, importers of retail goods, and contractors of large turnkey projects. North Korea's strategic location in the Far East offers enormous savings in transportation cost for multinational firms wishing to ship goods to Southeast Asia and Europe. Five reasons to do business with North Korea are analyzed in the report.

Details

International Journal of Commerce and Management, vol. 12 no. 2
Type: Research Article
ISSN: 1056-9219

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: 12 December 2019

Wooju Kim, Ki-Ok Jeong, Ho-Lyeong Cheon and Dong-Hyun Kang

Biofilms are bacterial communities embedded in exopolysaccharide, enhancing the difficulty of detaching bacterial cells from surfaces. Due to structural properties, it is…

Abstract

Purpose

Biofilms are bacterial communities embedded in exopolysaccharide, enhancing the difficulty of detaching bacterial cells from surfaces. Due to structural properties, it is difficult to detach biofilms. Many removal methods have been developed, but there are still some limitations such as sample size and reproducibility. “Spindle” was developed, producing a higher quality suspension which can be used for further study. The paper aims to discuss these issues.

Design/methodology/approach

The authors compared the enumeration of biofilm-forming cells detached from the spindle and stomacher in various surfaces. First, the authors chose stainless steel and polyvinyl chloride to attach biofilms and to be subjected to stomacher and spindle for up to 2 min. Also, the authors evaluated the efficiency of detachment from vegetable surfaces.

Findings

In a comparative experiment of abiotic surfaces, the spindle showed identical effectiveness for detaching biofilm-forming cells compared to the stomacher, recovering the population by 8-log for Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes. The spindle also showed no significant difference from the stomacher in the number of recovered cells which is 4-log from vegetable surfaces. However, turbidity after spinach was subjected to spindle was 4.37 NTU, while it was 99 NTU for stomacher, which was in accord with visual result about clearance.

Originality/value

This study demonstrated that the spindle is a useful to separate biofilms from surfaces without destructing structure, and thus it can be used for analysis in food laboratories as well as utilized for vegetable washing step in the food industry.

Details

British Food Journal, vol. 122 no. 2
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 29 April 2022

Eun Joo Park, Dong-Hyun Kim and Mi Jeong Kim

This study aims to examine whether a text stimulus could enhance students' imagination and thus enhance their creativity in the architectural design studio. The assumption is that…

Abstract

Purpose

This study aims to examine whether a text stimulus could enhance students' imagination and thus enhance their creativity in the architectural design studio. The assumption is that adopting the text stimulus in the conceptual design stage would support students' imagination through a nonlinear design process, and ultimately produce the creative values of design outcomes.

Design/methodology/approach

A curriculum that adopts a text stimulus was developed and used for first-year university students. The aim was to implement an architectural setting to stimulate students' imagination with a framework for creativity evaluation. The study focused not only on the design process that characterizes the generation of concepts and ideas, but also on the processes related to the creative practices that students need for developing their own expression methods to solve problems they encounter.

Findings

The results show that design education that emphasizes the imaginary could enhance students' creative thinking, thus leading to creative design. As a training tool in the design studio, the diversity of interpretation following the text stimulus was revealed to provoke a nonlinear design process and to eventually enhance students' originality, differential and inventiveness, which are associated with the creativity criteria for evaluation.

Originality/value

The study explores the translation of imaginary spaces from text into spatial design as a conceptual tool in order to characterize and support creativity throughout design education in the architectural design studio.

Details

Archnet-IJAR: International Journal of Architectural Research, vol. 16 no. 3
Type: Research Article
ISSN: 2631-6862

Keywords

Article
Publication date: 1 September 2006

Sandra M. McCurdy, Masami T. Takeuchi, Zena M. Edwards, Miriam Edlefsen, Dong‐Hyun Kang, V. Elaine Mayes and Virginia N. Hillers

The purpose of this research is to increase consumers' use of food thermometers to test the endpoint temperature of small cuts of meats.

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Abstract

Purpose

The purpose of this research is to increase consumers' use of food thermometers to test the endpoint temperature of small cuts of meats.

Design/methodology/approach

The project integrates research, classroom and non‐formal education.

Findings

Instant‐read food thermometers were available in >73 percent of USA supermarkets and most were accurate within 1.1°C. Lethality findings include that ground beef patties should either be cooked in a two‐sided grill or turned frequently during cooking. Focus group participants said the primary motivator to food thermometer use was avoidance of foodborne illness. Educational materials positively affected thermometer use among consumers.

Practical implications

Behavior change will be facilitated by widespread availability of thermometers, inclusion of endpoint temperatures in recipes, and seeing others use food thermometers.

Originality/value

This project develops and delivers information to encourage use of food thermometers to assess endpoint temperature when cooking small meat items.

Details

British Food Journal, vol. 108 no. 9
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 19 March 2018

Hyo-Jung Oh, Dong-Hyun Won, Chonghyuck Kim, Sung-Hee Park and Yong Kim

The purpose of this paper is to describe the development of an algorithm for realizing web crawlers that automatically collect dynamically generated webpages from the deep web.

Abstract

Purpose

The purpose of this paper is to describe the development of an algorithm for realizing web crawlers that automatically collect dynamically generated webpages from the deep web.

Design/methodology/approach

This study proposes and develops an algorithm to collect web information as if the web crawler gathers static webpages by managing script commands as links. The proposed web crawler actually experiments with the algorithm by collecting deep webpages.

Findings

Among the findings of this study is that if the actual crawling process provides search results as script pages, the outcome only collects the first page. However, the proposed algorithm can collect deep webpages in this case.

Research limitations/implications

To use a script as a link, a human must first analyze the web document. This study uses the web browser object provided by Microsoft Visual Studio as a script launcher, so it cannot collect deep webpages if the web browser object cannot launch the script, or if the web document contains script errors.

Practical implications

The research results show deep webs are estimated to have 450 to 550 times more information than surface webpages, and it is difficult to collect web documents. However, this algorithm helps to enable deep web collection through script runs.

Originality/value

This study presents a new method to be utilized with script links instead of adopting previous keywords. The proposed algorithm is available as an ordinary URL. From the conducted experiment, analysis of scripts on individual websites is needed to employ them as links.

Details

Data Technologies and Applications, vol. 52 no. 2
Type: Research Article
ISSN: 2514-9288

Keywords

Book part
Publication date: 28 August 2023

Kathryn Burrows

To understand how parents make the decision to implant their deaf young children with cochlear implants, focusing specifically on the concepts of normality, medicalization, and…

Abstract

Purpose

To understand how parents make the decision to implant their deaf young children with cochlear implants, focusing specifically on the concepts of normality, medicalization, and stigma.

Methodology/Approach

I conducted 33 semi-structured interviews with the hearing parents or parent of children with cochlear implants. In all but two families I interviewed the primary caretaker which in all cases was a mother. In the remaining two interviews, I interviewed both parents together. Because of the relative scarcity of families with children with cochlear implants, and the difficulty in connecting with these families, I used a convenience sample, and I did not stratify it in any way. The only requirement for parents to be interviewed is that they had at least one deaf child who had been implanted with at least one cochlear implant. Although this is a small sample, the findings are transferable to other families with the same sociodemographic characteristics as those in my study.

Findings

Parents in the study focused on three key concepts: normality, risk analysis, and being a good parent. Dispositional factors such as the need to be “normal” and the desire for material success for one's children appeared to moderate the cost-benefit calculus.

Research Limitations/Implications

Limitations

This interview project concentrated on hearing families who had implanted their deaf children with cochlear implants; it does not include culturally Deaf parents who choose to use American Sign Language (ASL) with their Deaf children. Understanding how Deaf families understand the concepts of normality, medicalization, and stigma would shed light on how a distinctly “abnormal” group (by a statistical conception of normal) – ASL-using Deaf people-explain normality in the face of using a non-typical communication method. One can learn a lot by studying the absence of a phenomena, in this case, not implanting children with cochlear implants. It is possible that the existential threat felt by some Deaf people, specifically the demographic problem presented by cochlear implants, led Deaf educators or parents to resist being the subject of research.

Overwhelmingly the sample was female, and white. Only two participants were male, and none of the participants were non-white. The lack of diversity in the sample does not necessarily reflect a lack of diversity of children receiving cochlear implants. Medicaid, which disproportionately covers families of color, covers cochlear implants in most cases, so low SES/racial intersectionality should not have affected the lack of diversity in the sample. However, the oral schools are all private pay, with few scholarships available, so low SES/racial intersectionality in the sampling universe (all children who attend oral schools), may have played a part in the lack of racial diversity within the sample.

Implications

Parents in this study were very specific about the fact that they believed cochlear implants would lead to academic, professional, and personal success. They weaved narratives of normality, medicalization, and stigma through their stories. Normality is an important lens from which to see stories about disability and ability, as well as medical correction. As medical science continues to advance, more and more conditions will become medicalized, leading to more and more people taking advanced medical treatments to address problems that were previously considered “problems with living” that are now considered “medical problems” that can be treated with advanced science.

Originality/Value of Paper

This chapter's contribution to the sociological cochlear implant literature is it's weaving of narratives about normality, stigma, and medicalization into parental stories about the cochlear implant decision-making process. Most literature about the cochlear implant decision-making process focus on cost-benefit analysis, and logical decision-making processes, whereas this paper focuses on decision-making factors stemming from bias, emotions, and values.

Details

Social Factors, Health Care Inequities and Vaccination
Type: Book
ISBN: 978-1-83753-795-2

Keywords

Article
Publication date: 20 January 2022

Naman Kaur, Anjana Kumari, Aparna Agarwal, Manisha Sabharwal and Saumya Dipti

This study aims to discuss the nutritional value and potential nutraceutical properties of Diospyros kaki L. (DKL); to encapsulate recent studies conducted across the world to…

Abstract

Purpose

This study aims to discuss the nutritional value and potential nutraceutical properties of Diospyros kaki L. (DKL); to encapsulate recent studies conducted across the world to develop functional foods using different parts of Persimmon fruit to emphasise on the need for further research on Persimmon fruit.

Design/methodology/approach

The methodology of the study involved surveying primary and secondary information generated in the respective field of interest. The papers found most suited for the research problem and objective of the study were selected. The perspectives taken by different studies and researchers were synthesised to generate a solution to the research problems and to bridge the research gaps in the field.

Findings

As a result of the global rise in the prevalence of metabolic disorders, researchers are aimed at identifying nutrient rich foods and techniques to develop functional foods for the population. Researchers have recognised the role of fresh fruits and vegetables, whole grains and probiotics, are now interested in leveraging these foods by incorporating them in conventional foods, such as breads, jams, pastas and yoghurts as functional ingredients. One such food that has gained the interests of various researchers is DKL. Owing to its rich macro-and micro-nutrient, as well as phytochemical content various studies have been conducted to explore the possibility of using it as a functional ingredient to develop a range of foods.

Research limitations/implications

A limited studies are available that have investigated the effect of the functional foods developed using different parts of Persimmon fruit on different ailments.

Originality/value

This study collected the data/information from recently published research in the field of health and medicinal benefits of Persimmon fruits and its utilisation to develop functional food.

Article
Publication date: 5 January 2024

Dennis Mathaisel

This paper aims to review and critically assess the role that data visualizations played as communication media tools to help society during a worldwide crisis. This paper…

Abstract

Purpose

This paper aims to review and critically assess the role that data visualizations played as communication media tools to help society during a worldwide crisis. This paper re-creates and analyzes several visualizations, critically and ethically assesses their strengths and limitations and provides a set of best practices that are informative, accurate, ethical and engaging at each stage in a reader’s interest.

Design/methodology/approach

The paper bases its methodology on the construct of “The Network Society” (Van Dijk, 2006; Castells, 2000, 2006) by creating a series of social networked visualizations, identifying the challenges and pitfalls associated with this communication approach and suggesting best practices in information communication technology. The case study is COVID-19.

Findings

The research in this study found that visual data dashboards and interactive Web-based charts did play a significant role in helping society understand COVID-19’s impact to make better informed decisions about society’s health and safety.

Research limitations/implications

Visual expositions of data do have strengths and weaknesses depending on how they are designed, how they communicate the story and how they are ethically deployed. Best practices are provided to help mitigate these limitations.

Practical implications

Visualizations are certainly not new, but the technology for rapidly developing and sharing them is new. Visual expositions provide an effective media for communicating complex information to a networked society.

Social implications

Visual expositions provide an effective media for communicating complex information to a networked society.

Originality/value

This paper highlights the significance of the need to understand complex data in a crisis in a visual format and to communicate the information quickly, persuasively, effectively and ethically to a networked audience.

Details

Journal of Information, Communication and Ethics in Society, vol. 22 no. 1
Type: Research Article
ISSN: 1477-996X

Keywords

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