어머니의 정서표현양가성이 유아의 문제행동에 미치는 영향 : 아버지의 양육참여에 따른 매개효과

정호영 ( Jung¸ Hoyoung ),최은실 ( Choi¸ Eunsil ) 열린부모교육학회 2020 열린부모교육연구 Vol.12 No.4

본 연구는 어머니의 정서표현양가성이 아버지의 양육참여와 유아의 문제행동과 맺는 관련성을 확인하기 위한 것이다. 이를 위해 만3-5세 유아를 양육하고 있는 어머니를 대상으로 정서표현양가성(AEQ), 아버지양육참여, 문제행동(CBCL1.5-5)을 측정하였다. 연구결과, 어머니의 정서표현양가성은 아버지양육참여, 유아의 문제행동과 높은 관련성이 있는 것으로 나타났다. 즉, 어머니의 정서표현양가성과 아버지양육참여는 부적상관을 보였고, 유아의 문제행동과는 정적상관을 보였다. 반면 아버지양육참여와 유아의 문제행동과는 부적상관을 보였다. 매개효과 검증에서는 아버지양육참여가 부분 매개함을 확인하였다. 이는 어머니의 정서표현양가성이 높을수록 아버지양육참여가 낮고 모든 문제행동(외현화, 내재화, 수면문제, 기타문제)이 높게 나타나는 것을 의미한다. 본 연구 결과를 통해 어머니의 정서표현양가성이 모-자녀관계 뿐만 아니라 공동양육의 책임이 있는 배우자와의 관계에도 영향을 미치고 있는 중요한 변인임을 확인할 수 있었고, 어머니의 정서표현양가성이 아버지양육참여를 매개로하여 유아의 문제행동에 직·간접적영향을 미치고 있음을 확인할 수 있었다. This study aims at figuring out how the mother’s ambivalence over emotional is affecting the fathers’ participation in child-rearing and young children's behavioral problems. To test a set of hypothesized relationships, a survey was conducted on mothers who raised their young children aged 3-5. The survey instruments include ambivalence over emotional(AEQ), fathers’ participation in child-rearing, young children’s Behavior Checklist(CBCL 1.5-5). According to the results of survey, mother’s ambivalence over emotional has great relations with fathers’ participation in child-rearing and young children’s behavior problems. In other words, mother’s ambivalence over emotional is negatively associated with fathers’ participation in child-rearing and positively associated with young children’s behavior problems. But, fathers’ participation in child-rearing is negatively associated with young children’s behavior problems. It showed father's involvement in child-rearing has a partial mediating effect. It means that the higher mother’s ambivalence over emotional is, the lower father's involvement in child-rearing is and the more behavioral problems(externalizing and internalizing, sleep, other behavior problems) appear. Based on the results of this study, it confirmed that mother’s ambivalence over emotional had an influence on not only relationships between mother and their young children but also relationships between partners having custody of their young children. Also, it confirmed that mother’s ambivalence over emotional mediated by father's involvement in child-rearing had an influence both directly and indirectly on young children’s behavioral problems.

The Immediate Effects of Single Leg Bridge Exercise on Abdominal Muscle Activity in Subacute Stroke Patients : a Preliminary Study

김호영(Hoyoung Kim),박찬범(Chanbum Park),방수용(Sooyong Bang),장호영(Hoyoung Jang),김용주(Yongju Kim),이석민(Sukmin Lee) 물리치료재활과학회 2021 Physical therapy rehabilitation science Vol.10 No.2

Objective: Single leg bridge exercise (SLBE) improves trunk muscle activation and provides muscle stability by aligning jointsrelated to posture. This preliminary study aimed to investigate the effects of SLBE on abdominal muscle activation in subacutestroke patients. Design: Cross-sectional study. Methods: Fifteen subacute stroke patients (9 males, 6 females) voluntarily participated in this study. SLBE was performed on theaffected side. Each individual patient performed an SLBE ten times in three sets and was asked to hold their position for 5 s. Muscles activity was recorded using a surface electromyography (EMG) system before and after the SLBE. A surface EMGsystem was used to analyze the muscle activity during general bridge exercise, including the rectus abdominis (RA), internaloblique (IO), and external oblique (EO) abdominal muscles. Results: Muscle activity of both EO and IO on the affected side significantly increased (p<0.05), whereas the muscle activity ofthe RA and the three muscles on the unaffected side did not show a significant difference. In addition, improvement in muscleasymmetry of the EO and IO showed a significant change after SLBE (p<0.05). Conclusions: SLBE is effective in activating the abdominal muscles of stroke patients on the affected side and is a helpfulexercise intervention that activates the muscles to transform asymmetric abdominal muscles into symmetric patterns.

Development of broadband NIR LED module for NIR spectroscopy

( Hoyoung Lee ),( Ahyeong Lee ),( Doo-jin Song ),( Seung-woo Chun ),( Jongguk Lim ),( Changyeun Mo ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2

In NIR spectroscopy and hyperspectral imaging, the light source is one of the important requirements. The Tungsten-Halogen lamp is a common light source for NIR radiation, which is operated at high temperatures and takes a long time to warm up until stabilization of its radiation. The power requirement is addressed by generating radiation, and extra-heating inside of bulb, as well. It turns out to have low power efficiency, and large volume for heat dissipation. In order to miniaturize NIR spectral system and hyperspectral imaging system, a light source must be found for the new alternative. There are many candidates in commercial, so called broadband NIR LED, which have better power efficiency, and lower operating temperature. In this study, we developed the test apparatus for several broadband NIR LEDs, and perform the comparison between them in terms of spectral radiation ranging of 700nm-1000nm. And then, as a light source of VIS-NIR spectroscopy(500nm-1000nm), the VIS+NIR LED module was developed with combination of warm-white LED and broadband LEDs. Using that, the spectrum transmitted through Fuji apple was acquired to investigate the potential to replace the TH-lamp. It shows the possibility that a TH-lamp is replaceable of the VIS+NIR LED module for VIS-NIR spectroscopy.

Stock Returns Predictable : Some New Evidence from the Korean Stock Market

Hoyoung Ryu,Van Hai Hoang,Hee-un Ko 한국재무학회 2016 한국재무학회 학술대회 Vol.2016 No.05

This paper makes three contributions to the literature on predictability stock returns in the Korean stock market. We focus on out-of-sample forecasting of returns based on industry portfolios are predictability. From the results, we discover that in-sample and out-of-sample test during from 2000 to 2015, predictability is not homogeneous. Furthermore, we examine the determinants of out-of-sample predictability for each sector using industry characteristics and find strong evidence that return predictability has links to certain industry characteristics, such as book-to-market ratio, dividend yield, size, price earnings ratio, and trading volume. We also discover a mean combination forecast approach which has significant out-of-sample performance.

Low-Power Parallel Chien Search Architecture Using a Two-Step Approach

Hoyoung Yoo,Youngjoo Lee,In-Cheol Park IEEE 2016 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS PART 2 E Vol.63 No.3

<P>This brief proposes a new power-efficient Chien search (CS) architecture for parallel Bose-Chaudhuri-Hocquenghem (BCH) codes. For syndrome-based decoding, the CS plays a significant role in finding error locations, but exhaustive computation incurs a huge waste of power consumption. In the proposed architecture, the searching process is decomposed into two steps based on the binary matrix representation. Unlike the first step accessed every cycle, the second step is activated only when the first step is successful, resulting in remarkable power saving. Furthermore, an efficient architecture is presented to avoid the delay increase in critical paths caused by the two-step approach. Experimental results show that the proposed two-step architecture for the BCH (8752, 8192, 40) code saves power consumption by up to 50% compared with the conventional architecture.</P>

Development of broadband NIR LED module for NIR spectroscopy

( Hoyoung Lee ),( Ahyeong Lee ),( Doo-jin Song ),( Seung-woo Chun ),( Jongguk Lim ),( Changyeun Mo ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2

In NIR spectroscopy and hyperspectral imaging, the light source is one of the important requirements. The Tungsten-Halogen lamp is a common light source for NIR radiation, which is operated at high temperatures and takes a long time to warm up until stabilization of its radiation. The power requirement is addressed by generating radiation, and extra-heating inside of bulb, as well. It turns out to have low power efficiency, and large volume for heat dissipation. In order to miniaturize NIR spectral system and hyperspectral imaging system, a light source must be found for the new alternative. There are many candidates in commercial, so called broadband NIR LED, which have better power efficiency, and lower operating temperature. In this study, we developed the test apparatus for several broadband NIR LEDs, and perform the comparison between them in terms of spectral radiation ranging of 700nm-1000nm. And then, as a light source of VIS-NIR spectroscopy(500nm-1000nm), the VIS+NIR LED module was developed with combination of warm-white LED and broadband LEDs. Using that, the spectrum transmitted through Fuji apple was acquired to investigate the potential to replace the TH-lamp. It shows the possibility that a TH-lamp is replaceable of the VIS+NIR LED module for VIS-NIR spectroscopy.

Reliability Measure of Focus Depth Cue for 2D-to-3D Conversion

Hoyoung Yoo,Wonseok Song,Dooseop Choi,Taejung Kim 대한전자공학회 2017 대한전자공학회 학술대회 Vol.2017 No.1

North Korean Cyber Terrorism: Past and Future

( Hoyoung Kang ),( Kyungho Lee ) 국방대학교 안보문제연구소 2018 The Korean Journal of Security Affairs Vol.23 No.2

With the success of hydrogen bomb and intercontinental ballistic missile tests by North Korea, international peace and security are continuously being threatened. Not only conventional battlefield, but also cyber domain has been exploited by North Korea as the weapon to hold asymmetric superiority over the adversaries. Cyber terrorism, which is expected to cause severe damage to property and injury or death to human, is one of the primary security threats in the international community. Therefore, this article highlights North Korean cyber terrorism by defining cyber terrorism and classifying it by characteristic. Based on the analysis of cyber terrorism in the past, it explores the possibilities of cyber terrorism in the future.

A Comparative Analysis of ‘Hook Turns’ & ‘No-Left-Turn’ to Solve the Left-Turning Traffic Problems at Urban Intersections

Hoyoung Lee,Dong-Kyu Kim,Seung Young Kho 한국ITS학회 2014 한국ITS학회 학술대회 Vol.2014 No.10

A case of subungual amelanotic melanoma

( Hoyoung Kim ),( Jaeho Lee ),( Joongheon Suh ),( Sookyung Lee ),( Unha Lee ),( Myoungshin Kim ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1

Subungual amelanotic melanoma is rare, only 15-25% of subungual melanoma. Since it appears pinkish or reddish, early diagnosis is often delayed causing poor prognosis. It usually occurs in thumbs or great toes. Pathogenesis of amelanotic melanoma is not well elucidated, but lack of tyrosinase and agenesis of melanosomes are possible causes. A 67-year-old male had subungual erythematous papule on his left thumb. It appeared 10 years ago and had increased in size splitting the nail. At the first visit, the lesion had discharge smelling foul odor. The biopsy specimen of nail plate showed several hyperchromatic large cells in epidermis and nail plate. In immunohistochemistry, Melan-A was focally positive and p63 was negative. The specimen of nail bed showed hyperchromatic and pleomorphic cells with positivity for Melan-A and negativity for pan-cytokeratin. He underwent excisional biopsy and the specimen showed atypical melanocytes in epidermis and nests of numerous hyperchromatic cells with mitotic figures in dermis. He was diagnosed with subungual amelanotic melanoma with pathologic stage T3b.