Yong-Hyun Kwon

Off－field Management and Investment Efficiency: Determinants of MLB Team Performance

Hojun Sung, Yong-Hyun Kwon

[연구목적] 본 연구는 프로 스포츠 산업에서 오프필드(off－field) 경영이 팀 성과에 어떠한 영향을 미치는지를 분석하고자 하였다. 특히 본 연구에서는 선행연구에서 간과되었던 외국인 선수 스카우팅, 신인 드래프트 관련 불확실성, 마이너리그 팀 관리와 같은 오프필드 요소에 주목하였다. 본 연구의 목적은 팀 효율성과 성과를 저해할 수 …

Comparison of cardiorespiratory responses between treadmill and bicycle ergometer exercise

Yong-Hyun Kwon, Ki Seok Nam, Jong Sung Chang, Kyung Woo Kang

The talk test (TT) is a subjective, self-administered method used to gauge aerobic exercise intensity based on a person's ability to speak comfortably during physical activity. This study aimed to validate the TT by examining its relationship with physiological markers collected during …

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Reclassification of the Etiology of Infant Mortality With Whole-Genome Sequencing

Mallory J. Owen, Meredith S. Wright, Serge Batalov, Yong-Hyun Kwon et autres

ABSTRACT Infant mortality rates are quite high even in developed countries; in the United States, infant deaths occur approximately 1 in 200 live births. The leading cause of infant mortality is congenital malformation or chromosomal abnormality, which cause roughly 20% of infant …

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The talk test as a useful tool to monitor aerobic exercise intensity in healthy population

Yong-Hyun Kwon, Kyung Woo Kang, Jong Sung Chang

The talk test (TT) is subjective method to measure exercise intensity in costless and feasible manner, compared to sophisticated laboratory equipment. We attempted to investigate whether the TT was a valid method for evaluation of exercise intensity, by comparing with values derived …

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Reclassification of the Etiology of Infant Mortality With Whole-Genome Sequencing

Mallory J. Owen, Meredith S. Wright, Serge Batalov, Yong-Hyun Kwon et autres

Importance: Understanding the causes of infant mortality shapes public health, surveillance, and research investments. However, the association of single-locus (mendelian) genetic diseases with infant mortality is poorly understood. Objective: To determine the association of genetic diseases with infant mortality. Design, Setting, and …

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COVID－19 Movement Restriction Effect on Stock Price of Chinese Firms: Location, Industry and Firm Characteristics

Yong-Hyun Kwon, Tong Xueyun

[연구목적] 본 연구에서는 COVID－19의 확산에 따라 시행된 중국 대도시들의 이동제한 조치가 중국 기업들의 주가에 미치는 영향을 분석하였다. [연구방법] 본 연구에서는 COVID－19에 따라 이동제한 조치가 취해졌던 2022년 3월 상해 이동제한 조치를 중심으로 하여 2020년 1월 우한의 이동제한 조치와 비교하여 누적 비정상수익률(Cumulative Abnormal Returns: …

The Relationship between Stock Market Reaction of Seasoned Equity Offering and Operating and Financial Leverage

Yong-Hyun Kwon, Chungwon Woo

[연구목적] 본 연구는 유상증자를 전후한 기업의 주가변화를 설명할 수 있는 주요 지표로서 영업레버리지도와 재무레버리지도 및 결합레버리지도의 효과에 대하여 실증하였다. [연구방법] 본 연구에서는 2014년부터 2021년까지 유상증자를 공시한 유가증권시장과 코스닥 시장 상장기업을 연구대상으로 하였다. 본 연구에서는 유상증자의 공시효과를 누적비정상수익률과 보유비정상수익률로 추정하였다. 또한 본 연구에서는 …

Development of 6 DOF Upper-Limb Patient Simulator for Hands-On Rehabilitation Education

Jaeho Kong, Yong-Hyun Kwon, Hak Yi

In rehabilitation treatment, the physiotherapy manual diagnostic method is the most affordable to cure spasticity disorders caused by neural impairments. The proficiency of the rehabilitation therapist is critical to maximizing the treatment effect; therefore the therapist's training focuses on physical hands-on practice. …

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Use of the Talk Test for Comparison of Exercise Intensity between Aerobic Activities with Treadmill and Bicycle

Yong-Hyun Kwon, Jong Sung Chang

Purpose: The talk test (TT) is an alternative, self-reported method for prescribing and guiding exercise training in both healthy adults and patients with cardiovascular and pulmonary diseases.This study examined whether the TT is a valid tool for evaluating the exercise intensity during …

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Motor Skill Learning on the Ipsi-Lateral Upper Extremity to the Damaged Hemisphere in Stroke Patients

Sung Min Son, Yoontae Hwang, Seok Hyun Nam, Yong-Hyun Kwon

Purpose: This study examined whether there is a difference in motor learning through short-term repetitive movement practice in stroke survivors with a unilateral brain injury compared to normal elderly participants.Methods: Twenty-six subjects who were divided into a stroke group (n= 13) or …

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Deficit of Motor Skill Acquisition on the Upper Limb Ipsilesional to the Injured Hemisphere in Individuals with Stroke

Yong-Hyun Kwon, Ju Yong Shin, Sung Min Son

BACKGROUND Movement deficits in limbs ipsilesional to the damaged hemisphere in individuals with stroke have been established through various motor tasks. Nevertheless, there has been little evidence regarding hindrance of motor skill acquisition on the ipsilesional limb in patients with stroke. Therefore, …

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Joint position sense error and muscle torque ratios of agonist and antagonist muscles in the ankle and knee joints of young adults

Kyung Woo Kang, Sung Min Son, Yong-Hyun Kwon

BACKGROUND: Many studies have investigated the correlation between muscle torque and joint position sense (JPS), but few studies have been performed on the correlation between torque ratio and JPS. OBJECTIVE: The aim of this study was to investigate JPS and muscle torque …

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