거울 속의 거울은

홍지헌 천년의시작 2024 (계간)시작 Vol.23 No.1

부신 피질 호르몬이 돌발성 난청 환자의청각 회복에 미치는 영향

홍지헌,김희남,정명현,이한규,김지우,김세헌 대한이비인후과학회 1990 대한이비인후과학회지 두경부외과학 Vol.33 No.6

언어발달지체 영유아의 한국판 LDS(언어발달검사) 반응특성

홍지헌 ( Ji Heon Hong ),하은혜 ( Eun Hye Ha ) 한국놀이치료학회 2016 한국놀이치료학회지(놀이치료연구) Vol.19 No.2

본 연구에서는 심리장애 영유아를 대상으로 언어발달지체집단과 언어발달정상집단으로 구분하여 언어발달지체 영유아의 한국판 LDS(언어발달검사) 반응특성을 규명하였다. 연구대상은 소아정신과와 재활의학과 등 3곳에 발달평가가 의뢰된 18개월에서 35개월 영유아 135명이며, 연구도구는 한국판 LDS(Language Development Survey), 한국 Bayley 영유아 발달검사 II를 사용하였다. 본 연구의 결과는 다음과 같다. 첫째, 18-23개월 영유아의 LDS 어휘력 점수는 Bayley 영유아 발달검사의 인지척도와 유의한 상관관계가 나타났으며, 24-35개월 영유아의 LDS 어휘력과 문장길이 점수는 Bayely 영유아 발달검사의 인지척도와 유의한 상관관계가 나타났다. 둘째, 18-23개월 영유아의 LDS 어휘력점수는 언어발달지체집단과 언어발달정상집단에서 차이가 나타나지 않았으며, 효과크기도 낮은 수준으로 나타났다. 그러나 24-35개월 영유아의 경우 언어발달지체집단이 LDS의 어휘력에서 정상집단에 비해 두드러지게 낮은 수행을 나타냈으며, 효과크기는 중간정도의 수준으로 나타났다. 또한 24-35개월 영유아의 LDS 문장길이점수에서 언어발달지체집단이 언어발달정상집단에 비해 유의 하게 낮은 수행을 나타냈으나, 효과크기는 낮은 수준으로 산출되었다. 본 연구를 통해 한국판 LDS와 Bayley 영유아 발달검사의 높은 상관관계를 확인하였고, 언어발달지체집단과 언어발달정상집단으로 구분하였을 때 언어발달지체 영유아가 한국판 LDS에서 더 낮은 수행을 보이는 것을 확인하였다. 이에 따라 한국판 LDS의 언어발달지체 변별가능성을 확인하였다는 데 의의가 있다. The purpose of this study was to investigate the response characteristics of the Korean LDS of toddlers suffering from language developmental delay. The participants comprised 135 toddlers who were 18 to 35 months old. They were assessed at a child psychiatry clinic and rehabilitation centers in Seoul. The K-BSID-II and the Korean LDS were used as the measuring tools. The results were as follows: First, the Vocabulary scores and Mental scales of the 18 to 23 month old subjects showed a significantly positive correlation. The Vocabulary scores, Phrase length scores and Mental scales of the 24 to 35 months old subjects showed significantly positive correlations. Second, the Vocabulary scores revealed no differences between toddlers with or without language delay who were in the 18 to 23 months old group. The Vocabulary scores and Phrase length scores of -the 24 to 35 months group suffering from language delay was significantly lower than the normal language development group. In addition, the effect size of- Vocabulary scores was moderate compared to low Phrase length scores. This study verified the validity of the Korean LDS as a very useful tool for assessing language development delay in toddlers.

텍스트 분석 기법과 식재료 계층구조를 활용한 음식 레시피 추천 방법

홍지헌(Jiheon Hong),이희정(Heejung Lee) 대한산업공학회 2019 대한산업공학회지 Vol.45 No.4

우리나라 비상장기업의 코스닥 SPAC 합병상장 결정요인에 관한 실증연구

홍지헌(Jiheon Hong),양동우(Dongwoo Yang) 대한경영학회 2021 大韓經營學會誌 Vol.34 No.3

To Minimize the Weighted Number of Early and Tardy Jobs in a Two-machine Flow Shop

Ji Hon Hong(홍지헌),Suk-Hun Yoon(윤석훈) 한국SCM학회 2021 한국SCM학회지 Vol.21 No.1

In this paper, we consider a two-machine flow shop scheduling problem with different job due dates. The objective is to minimize the weighted number of early and tardy jobs. We present a mixed integer programming formulation for the problem and develop efficient cut constraints which are valid inequalities. Extensive experiments are conducted to show the effectiveness of the cut constraints. We propose an O(n²) heuristic algorithm to solve the problem.

내이 증상을 보이는 환자에서 Vastinan(r)의 임상적 효과

김희남,홍지헌,김지우,정운교 대한이비인후과학회 1989 대한이비인후과학회지 두경부외과학 Vol.32 No.5

Neural Tract Injuries by Penetration of Foreign Body: a Diffusion Tensor Tractography Study

권혁규,홍지헌,권용현,이미영,김성호,장성호 대한물리치료학회 2013 대한물리치료학회지 Vol.25 No.3

We presented with a patient who showed injury of the cingulum and fornix by penetration of a foreign body into the brain on diffusion tensor tractography (DTT). A 63-year-old man suffered a brain injury by a part of a power saw blade that was suddenly detached from a power saw during work. A part of the power saw blade penetrated his right frontal skull and advanced to the right posterior horn of the lateral ventricle. This penetration caused traumatic intracerebral hemorrhage in the right frontal lobe and intraventricular hemorrhage in the lateral ventricle. He underwent craniotomy and removal of intracranial foreign bodies (bony pieces and saw blade). The patient’s Memory Assessment Scale scores were 74 (4%ile) for global memory, 78 (7%ile) for verbal memory, and 80 (9%ile) for visual memory. DTTs showed disruptions in the anterior portion of the fornical body, right fornical crus, the anterior portion of the right cingulum, and the middle portion of the left cingulum, compared to the control. It seems that the sustained memory impairment of this patient might be related to injury of the cingulum and fornix.

Effect of suspension plank exercise with hip abduction and modified bridge exercise on the trunk muscle thickness in healthy adults

김요한,홍지헌,유재호,김진섭,이동엽 대한정형도수물리치료학회 2023 대한정형도수물리치료학회지 Vol.29 No.1

BACKGROUND: The purpose of this study was to find out which exercise is more effective for the activation of the trunk, when the suspension plank and modified bridge exercise are performed. Weakening of the trunk muscles can lead to secondary injuries such as back injuries. In order to prevent injury, trunk muscles must be strengthened, and representative trunk strengthening exercises include planks and bridges. Each has been developed with a modified method, but since there is no paper comparing which exercise is more effective for trunk muscle strength, it was written to compare the two exercises. METHODS: The subjects were a random sample of 30 healthy men who agreed to participate in the study. The subjects were divided into two groups of 15 people each, and the suspension plank and the modified bridge exercise were performed for six weeks. The thickness of the transverse abdominis (TrA), internal abdominal oblique (IO), external abdominal oblique (EO), rectus abdominis (RA), multifidus (MF) was measured before and after the exercise. The two groups were analyzed using an independent t-test and paired t-test to compare the muscle thickness and the difference before and after exercise. RESULTS: The trunk muscle thickness was increased in both groups with suspension plank and modified bridge exercise, and there was a statistically significant difference. When comparing the two groups, the suspension plank group also showed a significant difference in RA (p<.05). CONCLUSION: As a result of this study, suspension plank exercise can have a positive effect on activating the trunk muscles and strengthening the strength of RA. Therefore, it is considered that suspension plank exercise is a more effective intervention to strengthen trunk muscle than modified bridge exercise.

골반 바닥근육 운동을 이용한 복부 드로잉-인이 초음파 측정 방법을 이용한 복부 근육 두께에 미치는 영향

최유정,손아름,홍지헌,유재호,김진섭,이동엽 한국융합학회 2019 한국융합학회논문지 Vol.10 No.7

The purpose of this study is to measure abdominal muscle thickness when Pelvic Floor contraction (PFC) and Abdominal Drawing-In Maneuver (ADIM) were separately applied and combined exercise was applied and to compare the effects of the exercise. After the pre-investigation, the subjects were given a explanation of the purpose and the method of the research and then an experiment was conducted targeting a total of 30 subjects, who voluntarily agreed with this. Thicknesses of internal oblique (IO), transverse abdominis (TrA) and external oblique (EO) were measured during a break and then three types of exercise. All the measured values of the experiment were processed using Repeated measure ANOVA, and Bonferroni method was applied. As a result, the three types of exercise showed significant differences in thicknesses of IO, TrA and EO. In conclusion, the subjects had the thickest muscles and muscular activity increased during PFC+ADIM, compared to PFC and ADIM. 본 연구에서는 복부 드로잉-인 운동과 함께 골반바닥근운동 적용이 복부 근육 두께에 미치는 영향을 알아보고자 하였다. 건강한 성인 30명이 본 연구에 참여하였다. 대상자들은 복부 드로잉인 운동, 골반바닥근육 운동, 복부드로잉인+골반바닥근육운동의 결합, 세 가지 동작을 수행하였다. 동작을 수행하는 동안 모든 대상자의 배바깥빗근, 배속빗근, 배가로근의 두께가 측정되었다. 각 운동에 따른 근육의 두께 차이를 비교하기 위해 일원배치분산분석을 사용하였다. 사후분석으로는 Bonferroni 검정이 사용되었다. 본 연구 결과에 따르면 배바깥빗근은 골반바닥근육 운동만 적용했을 때보다 두 가지 운동이 결합되었을 때 통계적으로 근육의 두께가 증가하는 것을 발견하였다. 배속빗근과 배가로근의 경우는 골반바닥근육 운동, 복부 드로잉인 운동, 두 가지 운동의 결합 순서로 근육의 두께가 증가하는 것을 발견하였다. 이러한 연구 결과는 임상적으로 체간 안정화에 더 효율적인 운동방법을 제시할 수 있을 것으로 사료된다.