• Archives of Plastic Surgery
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• 제39권4호
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• pp.338-344
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• 2012

Background It is known that nonsynostotic plagiocephaly does not spontaneously improve, and the craniofacial deformities that result from it. This study was conducted to analyze the effectiveness of helmet therapy for the nonsynostotic plagiocephaly patient, and to suggest a new treatment strategy based on this analysis. Methods A total of 108 pediatric patients who had undergone helmet therapy after being diagnosed with nonsynostotic plagiocephaly were included in this study. The patients were classified according to the initiation age of the helmet therapy, severity, and helmet wearing time. The treatment effect was compared using cranial vault asymmetry (CVA) and the cranial vault asymmetry index (CVAI), which were obtained from diagonal measurements before and after therapy. Results The discrepancy of CVA and CVAI of all the patients significantly decreased after helmet therapy. According to the initiation time of helmet therapy, the treatment effect was best at 5 months old or less. The helmet wearing time per day was proportional to the treatment effect up to 20 hours. In addition, the rate of the successful treatment (final CVA ${\leq}$ 5 mm) significantly decreased when the initiation age was 9.1 months or older and the treatment period was less than 7.83 months. Conclusions This study showed the effectiveness of the helmet therapy for nonsynostotic plagiocephaly patients. Based on analysis of this study, helmet therapy should be started at the age of 9 months or younger for 7.83 months or more, and the helmet wearing time should be more than 20 hours a day.

• 디지털융복합연구
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• 제13권5호
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• pp.31-39
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• 2015

본 연구는 한국소비자원의 2013 한국의 소비생활지표의 원자료를 활용하여 기술적 정보를 제공하는 금융영역에서의 소비자 문제 경험을 확인하고, 이에 영향을 미치는 요소들을 탐색하였다. 금융 영역은 기술적 정보 영역에 해당하여 소비자 문제 경험 분석 시 지식 등 객관적인 역량 중심의 접근이 아니라 기술적 정보 영역의 특성에 근거해 융복합적 관점으로 영향요인을 탐색하는 것이 중요하다. 기술적 정보로서 금융영역에서는 정확한 정보의 제공 및 비교정보에 대한 요구가 높은 것으로 나타났다. 또한 문제경험에의 영향 변수를 탐색한 결과 소비자 개개인의 주관적인 금융 역량이 문제경험을 줄이는 것에 의미 있는 변수로 확인되었으며, 50대 이상의 고령 소비자들은 금융영역에서 더 많은 문제를 경험하고 있는 것으로 확인하였다. 이를 통해 기술적 정보 영역인 금융영역의 경우 금융정보의 효율적인 전달 방안에 관한 모색, 고령자에 대한 판매접점에서의 추가적인 노력 방안이 요구되며, 그 동안 객관적 금융역량을 강화하기 위한 방안에 초점이 맞추어져 있었으나, 향후 주관적 금융역량 강화를 위한 방안에 대한 연구가 요구된다.

• Journal of Forest and Environmental Science
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• 제38권2호
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• pp.102-109
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• 2022

This study was conducted to test the significant difference of fertility variation among families and to select superior families for acorn production in the breeding seedling seed orchards (BSSOs) of Quercus acuta and Quercus glauca. The seed orchards were located in Jeju island and established by seedlings raised from selected parents for genetic testing in 2006. In the spring of 2021, the numbers of female and male flower were counted from 5 to 10 individuals per family in the BSSOs. To test statistical significance of which parameter is not satisfied through the normality test, we used a nonparametric analysis. Correlation analysis was performed to quantify the association between female and male flower production. As the results, the significant difference of flower production among families was found in both seed orchards. The averages of female flower production were 65.3 and 181.9 in Q. acuta and Q. glauca. The positive Spearman's rank correlation was existed between male and female flower production. Broad-sense heritability on female and male flower production were 0.191 and 0.147 in Q. acuta, and 0.285 and 0.068 in Q. glauca, respectively. Sexual asymmetry (e.g., maleness index) between female and male, and contribution variation among families (e.g., parental balance) were analyzed to find reasonable alternatives in the management of seed orchards. Effective population size of seed crops was predicted as a concept of status number. Loss of gene diversity (accumulation of group coancestry) would not be alarming in the BSSOs. Our results would be helpful to select breeding materials for establishing new seed orchards and to supply genetically improved seeds of evergreen oaks, which is one of the backbones of the strategy of carbon sink in the 2050 Carbon Neutrality of Korea Forest Service.

• Archives of Plastic Surgery
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• 제51권2호
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• pp.169-181
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• 2024

Background With the advent of cranial orthoses as therapeutic medical devices for the treatment of severe positional head deformities in Japan, an increasing number of patients are being treated with them. However, assessing the effectiveness of a treatment is often difficult due to the use of different metrics. This study aimed to evaluate the effectiveness of cranial orthoses for deformational plagiocephaly using two- (2D) and three-dimensional (3D) evaluation metrics. Methods We conducted a retrospective study of infant patients with deformational plagiocephaly who underwent cranial orthosis treatment. We evaluated the severity of deformational plagiocephaly using cranial asymmetry (CA) and the cranial vault asymmetry index (CVAI) as 2D metrics, and anterior and posterior symmetry ratios as 3D metrics. The patients were divided into 24 subgroups based on the initial severity of each outcome and their age at the start of treatment. We analyzed the changes in outcomes and correlations within improvements across the age and severity categories. Results Overall, 1,038 infants were included in this study. The mean CA, CVAI, and anterior and posterior symmetry ratios improved significantly after cranial orthosis treatment. The improvement in each score was greater in patients with more severe initial deformities and in those who underwent treatment at a younger age. Conclusion Cranial orthosis treatment was effective in correcting deformational plagiocephaly in infants, as demonstrated by improvements in both 2D and 3D metrics. Patients with more severe initial deformities and those who underwent treatment at a younger age showed greater improvement.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2003년도 춘계학술대회 논문집
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• pp.107-110
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• 2003

본 연구에서는 EEG를 이용하여 정신집중 시, 뇌 기능의 변화를 알아보았다. 실험은 건강한 남녀 고교생 9명을 대상으로 EEG는 Fp1. Fp2, F3, F4, P3, P4, T5, T6, O1, O2의 10위치에 대하여 정신집중 작업 진의 3분과 작업 시 30분간을 측정하였다. 작업은 PC를 이용하였으며 모니터 상의 움직임에 집중하고 목표자극을 탐지하였을 때 신속하게 적절한 반응키를 누르도록 하였다. 각 주파수 대역은 theta2와 (6.0-8.0Hz), alpha1파 (8.0-10.0Hz), alpha2파(10.0-12.0Hz)로 구분하였으며 비대칭지수를 이용하여 분석하였다. 그 결과, 정신집중 작업 시 theta1, theta2, alpha1대역에서 두정엽의 우반구과 측두엽 및 후두엽의 좌반구영역이 우세하였다. 이들 영역은 시갈, 지각, 움직임 기능을 수행하며 theta2파가 주의, alpha1파가 각성 관련이다. 이상의 결과에서 두정엽의 우반구와 측두엽 및 후두엽의 좌반구영역의 theta1파, theta2파, alpha1파가 정신집중 작업 시 중요한 역할을 담당하는 것으로 나타났다.

• Communications for Statistical Applications and Methods
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• 제21권4호
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• pp.335-347
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• 2014

This paper employs dynamic conditional correlation (DCC) model to examine time-varying comovement in the Korean stock market with a focus on the financial industry. Analyzing the daily returns of KOSPI 200 eight sector indices from January 2008 to December 2013, we find that stock market correlations significantly increased during the GFC period. The Financial Sector had the highest correlation between the Constructions-Machinery Sector; however, the Consumer Discretionary and Consumer Staples sectors indicated a relatively lower correlation between the Financial Sector. In terms of model fitting, the DCC with t distribution model concludes as the best among the four alternatives based on BIC, and the estimated shape parameter of t distribution is less than 10, implicating a strong tail dependence between the sectors. We report little asymmetric effect in correlation dynamics between sectors; however, we find strong asymmetric effect in volatility dynamics for each sector return.

• 전기학회논문지P
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• 제61권1호
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• pp.55-58
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• 2012

By using EEG and HRV, subjects were estimated on their psychological and physiological reaction when reading psychrometric chart in 7 point century font, in an environmental test room in the condition of temperature 25[$^{\circ}C$], relative humidity 50[RH%], air current speed 0.02[m/sec], giving variation in illuminance to 0.1, 300, 600, 1000, 1300 and 1600[lux]. As a result, it was at 1300[lux] that absolute ${\alpha}$ wave, SMR, SDNN were most vitalized, and also both sides ${\alpha}$ wave asymmetry index, SEF50, HRT, stress and fatigue degree were at the lowest. It was found that a certain illuminance which minimizes psychological stress and fatigue degree while enhancing concentration and task achievement stably does exist.

• 한국융합학회논문지
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• 제10권3호
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• pp.275-290
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• 2019

본 연구의 목적은 휠체어컬링 국가대표선수와 팀의 요구에 기초하여 현장 활용도와 시합 및 훈련 기여도가 높은 스포츠심리기술훈련 프로그램을 개발하고 그 적용 가능성을 평가해 보는데 있다. 본 연구의 대상자는 현재 휠체어컬링 국가대표선수 4명을 대상으로 하였다. 상담은 내담자와 편안한 분위기에서 일주일에 1회씩 매 60-90분 총 12회를 실시하였다. 측정도구는 스포츠심리기술 질문지, 운동선수 자기관리행동 질문지, 한국판수행전략검사지, 기분상태프로파일질문지, 경쟁상태불안 검사지, 경기 참여 휠체어컬링 수행결과 변화, 심리기술훈련 평가질문지, EEG 대뇌반구 비대칭 차이지표 분석 등을 측정하였다. 본 연구결과는 다음과 같다. 첫째, 심리기술훈련은 사전단계에서 연구대상자의 문제점으로 지적되었던 3개의 하위 요인인 각성조절, 걱정, 주의집중을 긍정적으로 변화시킨 것으로 나타났다. 둘째, 심리기술훈련은 휠체어컬링 대표선수들의 수행변화에도 긍정적인 영향을 미치는 것으로 나타났다. 셋째, 개방형질문지 분석결과 연구대상자는 심리기술훈련 프로그램에 대한 필요성을 인식하고 경기력에도 도움이 된다고 인식하고 있는 것으로 나타났다. 넷째, 스포츠심리기술훈련 처치 전에는 EEG대뇌반구비대칭 차이지표가 부정적 정서 상태를 보였지만 처치 후 긍정적 정서 상태를 보였다. 이것은 뇌 과학적 접근인 EEG 뇌파분석을 통해 심리기술훈련이 휠체어컬링 대표선수들의 심리적 상태에 긍정적인 영향을 미친다는 것을 과학적이고 객관적으로 검증하였다.

• 대한치과교정학회지
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• 제50권6호
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• pp.407-417
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• 2020

Objective: To investigate the dental phenotypes and treatment modalities (Tx-Mod) in Korean patients with Parry-Romberg syndrome (PRS) using longitudinal data. Methods: The samples consisted of 10 PRS patients, who were treated and/or followed-up at Seoul National University Dental Hospital between 1998 and 2019. Using a novel PRS severity index based on the numbers of the atrophy-involved area and asymmetry-involved item, we classified them into mild (n = 3), moderate (n = 2), and severe (n = 5). Dental phenotypes, including congenitally missing tooth (Con-Missing-Tooth), microdontia, tooth with short root (Short-Root), tooth with dilacerated root, and delayed eruption/impacted tooth, were investigated along with Tx-Mod. Results: The side of occurrence of all dental phenotypes showed 100% concordance with the side of PRS involvement. The most two common dental phenotypes were Con-Missing-Tooth and Short-Root (n = 29 and n = 17 in six patients). The sums of the average number of Con-Missing-Tooth and Short-Root increased from mild PRS to moderate PRS and severe PRS cases (1.0, 6.0, and 6.2). In terms of Tx-Mod, growth observation due to mild atrophy, fixed orthodontic treatment, and grafting were used for mild PRS cases. Tx-Mod for moderate PRS cases involved growth observation for surgery due to an early age at the initial visit. For severe PRS cases, diverse Tx-Mod combinations including unilateral functional appliance, fixed orthodontic treatment, growth observation, grafting, and orthognathic surgery were used. Conclusions: The novel PRS severity index may be useful to provide primary data for individualized diagnosis and treatment planning for PRS patients.

• 한국융합학회논문지
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• 제9권10호
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• pp.423-432
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• 2018

본 연구는 볼링 선수의 상해 경험과 유형에 따라 상 하지 근력과 좌우 비대칭 차이를 살펴보고자 하였다. 본 연구 대상자는 상지 상해 경험 집단(upper body injury group, [UG], n=16)과 하지 상해 경험 집단(low body injury group, [LG], n=8), 상해 미경험 집단(non injury group, [NG], n=15)으로 선정하였다. 볼링 선수의 상 하지 근력은 Manual Muscle Tester 01165 (Lafayette Instrument Company, USA)로 등척성 최대 근력(Isometric strength)을 측정하였으며, 비대칭 지수(symmetry index, [SI])를 산출하였다. 그 결과는 다음과 같다. 하지 근력의 좌우 비대칭 지수는 엉덩관절의 신전과 외측회전 최대근력에서 상해 무경험 집단이 하지 상해 경험 집단에 비하여 통계적으로 크게 나타났다(p<.05). 위 결과를 통하여 하지 근력의 좌우 대칭이 하지 상해와 밀접한 관련이 있다고 판단되며, 상해 예방을 위해 하지 근력의 좌우 대칭 훈련이 필요할 것으로 판단된다.