편측 또는 양측을 동시에 시행한 단축 스카프 절골술의 시간 경과에 따른 임상적 결과

정진화,정창훈,박일규 대한족부족관절학회 2019 대한족부족관절학회지 Vol.23 No.4

Purpose: This study compared the radiographic and clinical outcomes of simultaneous bilateral short scarf osteotomy with those of unilateral short scarf osteotomy in hallux valgus patients. Materials and Methods: The authors undertook a retrospective chart and radiographic review between January 2015 and June 2017 to identify 15 patients (30 cases, group A) who underwent a simultaneous bilateral short scarf osteotomy. The patients were matched with 30 patients (30 cases, group B) with a unilateral short scarf osteotomy. No significant preoperative differences were observed between the two groups in terms of age, gender, American Orthopaedic Foot and Ankle Society (AOFAS) hallux score, and radiographic parameters. The clinical and radiographic follow-up was carried out at three months and one year. Results: Hallux valgus angles in groups A and B were reduced from the mean preoperative values of 32.5° and 34.7° to 12.5° and 12.2° at 12 months, respectively. The first-second intermetatarsal angles in groups A and B were also reduced from the mean preoperative values of 14.2° and 16.5° to 7.4° and 7.3° at 12 months, respectively. No significant inter-group differences in radiographic outcomes were observed. After three months, the patients in group A reported significantly worse mean pain and functional scores than group B. The mean AOFAS hallux score was higher in group B at the three-month follow-up, but this difference disappeared at the one-year followup. Conclusion: Simultaneous bilateral surgery can be offered to patients with a hallux valgus deformity requiring correction. On the other hand, they should be informed of the long recovery period.

유아의 인지적 놀이행동과 인지능력, 갈등해결능력, 운동능력, 성취동기 간의 관계 분석

정진화 숭실대학교 영재교육연구소 2021 Global Creative Leader Vol.11 No.4

The purpose of this study was to analyze the relationships among children’s cognitive play behavior, cognitive ability, conflict resolution ability, motor ability, and achievement motivation. The subjects of this study were 220 young children whose mean age was 63.42 months. The research data were collected by ‘Social and cognitive play scale’,‘ K-WIPPSI-Ⅳ’, ‘Children's conflict resolution ability test’,‘MPTYC’and‘Achievement motivation test’. Pearson correlation and Step-Wise Multi Regression were used to analyze the data. As a result of the study, it was found that among cognitive plays behavior, functional play behaviors had a positive correlation with achievement motivation, and constructive play behaviors had a positive correlation with conflict resolution ability, and achievement motivation. Dramatic play behaviors had a positive correlation with motor ability, conflict resolution ability, and cognitive ability, and games with rules had a positive correlation with motor ability, conflict resolution ability, and cognitive ability. Secondly, The adventurous spirit and task orientation of achievement motivation were found to be positive predictors affecting functional play among children's cognitive play. Self-responsibility of achievement motivation, task orientation, and conflict resolution were found to be positive predictors affecting constructive play. The processing speed of cognitive ability, movement of motor ability, space and time of the cognitive ability, conflict resolution of conflict resolution ability, and interest and enjoyment of achievement motivation were found to be positive predictors affecting dramatic play. Perseverance and passion of achievement motivation, fluid inference of cognitive ability, and confidence in achievement motivation were found to be predictive variables affecting games with rules. These results reveal that several variables affect cognitive play behavior as well as cognitive development, and the basic data to support and expand play can be used. 본 연구의 목적은 유아의 인지적 놀이행동과 관련 있는 변인(인지능력, 갈등해결능력, 운동능력, 성취동기)들의 관계성을 분석하는 데 있다. 연구대상은 K도 소재 유치원 7곳에 재원 중인 유아 220명을 대상으로 평균 월령은 63.42개월이었다. 유아의 사회ᐧ인지적 놀이 척도, 인지능력검사(K-WIPPSI-Ⅳ), 갈등해결능력검사, 운동능력검사(MPTYC), 성취동기검사를 실시하여 자료를 수집하였다. 수집된 자료는 Pearson 적률 상관계수, 단계적 중다회귀분석을 통해 분석하였다. 연구결과 유아의 인지적 놀이행동 중 기능놀이와 성취동기 간, 구성놀이와 갈등해결능력·성취동기 간, 극화놀이와 운동능력·갈등해결능력·인지능력 간, 규칙 있는 게임과 운동능력·갈등해결능력·인지능력 간 정적 상관관계가 있는 것으로 나타났다. 또한, 유아의 인지적 놀이행동 중 기능놀이는 성취동기의 모험심과 과제지향이 영향을 미치는 예측변인으로 나타났다 구성놀이는 성취동기의 자기책임감, 과제지향, 갈등해결의 갈등해결이 예측변인으로 나타났다. 극화놀이는 인지능력의 처리속도, 운동능력의 이동운동, 인지능력의 시공간, 갈등해결능력의 갈등해결, 성취동기의 흥미즐거움이 영향을 미치며, 규칙 있는 게임은 성취동기의 끈기, 열정, 인지능력의 유동추론, 성취동기의 자신감이 영향을 미치는 것으로 나타났다. 이러한 결과는 인지발달 뿐 아니라 인지적 놀이행동에 영향을 미치는 여러 변인이 있음을 밝혀내고, 놀이를 지원하고 확장하기 위한 기초자료를 활용될 수 있다.

컨베이어 추적을 위한 로보트 매니퓰레이터의 최소시간궤적 계획 ( Minimum-time Trajectory Planning of a Robot Manipulator for Conveyor Tracking )

정진화,윤기호,정선태 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.7

단거리 달리기 WBI(Web Based Instruction) 자료의 개발 및 수업적용에 관한 연구

정진화,김동준,김정하 한국스포츠리서치 2002 한국 스포츠 리서치 Vol.13 No.2

사슴의 제왕절개수술

정진화 대한수의사회 1984 대한수의사회지 Vol.20 No.11

DTC(Direct-to-Consumer) 유전자 검사에 대한 효용성 관점의 한계와 정치적 대안 모색

정진화 한국정치사상학회 2020 정치사상연구 Vol.26 No.2

With the development of human genome analysis technologies, modern society has now entered an era in which consumers can directly purchase genetic testing services without the need for going through medical institutions. However, Direct-to-Consumer Genetic Testing (DTC GT) currently faces sharp divides over its effectiveness and among the pros and cons centered on its ultimate utility. In response, this paper examines utilitarianism, which is the theoretical foundation of the utility viewpoint at the level of political thought, and considers its limitations, problems, and political alternatives. A suitable response to the developments of genetic engineering, including the growing availability of DTC GT, inevitably demands an active role from the domains of politics and democracy. And yet it remains difficult to find a variety of studies on this application of political thought. At this point in time, efforts to consider the issues surrounding DTC GT based on political considerations are insufficient, but their expansion holds the potential to spark a convergence of various interdisciplinary studies among a wide variety of subsequent research. 인간 유전체 분석 기술의 발전으로 현대사회는 소비자가 의료기관을 통하지 않고 직접 유전자 검사 서비스를 구매할 수 있는 시대에 접어들었다. 하지만 소비자 직접 구매 유전자 검사(Direct-to-Consumer Genetic Test: DTC GT)는 현재 효용성을 중심으로 찬반입장이 첨예하게 대립하고 있는 상황이다. 이에 본 논문은 정치사상 차원에서 효용성 관점의 이론적 토대가 되는 공리주의를 살펴보고 그 한계와 문제점을 고찰한 뒤 정치적 대안을 모색해보았다. DTC GT를 비롯해 유전공학의 발전에 따르는 문제에 대한 대응은 결국 정치와 민주주의의 역할로 귀결될 수밖에 없지만 이에 대한 정치학 차원의 다양한 연구들은 아직 찾아보기 어려운 실정이다. 이러한 시점에 정치사상을 토대로 DTC GT에 대한 문제를 고찰하려는 노력은 부족하지만 다양한 학제간 융합과 후속연구를 촉발하는데 기여할 수 있을 것이다.

소족지 중족골통을 동반한 무지 외반증에서의 변형 스카프 절골술

정진화,정현우,주인탁,Chung, Jin-Wha,Jung, Hyun-Woo,Chu, In-Tak 대한족부족관절학회 2008 대한족부족관절학회지 Vol.12 No.2

Purpose: The purpose of this study was to evaluate the radiological and clinical results of modified scarf osteotomy for hallux valgus with lesser metatarsalgia. Materials and Methods: Total 19 patients (24 feet) were reviewed by medical records and radiographs. All patients were female and the mean age at the time of operation was 46.4 years. The mean follow-up time was 14.8 months. We modified original scarf osteotomy by adding the procedure of closing wedge osteotomy at the medial side of distal fragment for achieving of the supination of the first metatarsal head. Additionally, Akin osteotomy of the first proximal phalanx was done in 16 patients (20 feet) and no lesser metatarsal operation was done. First-second intermetatarsal, hallux valgus and distal metatarsal articular angles were analyzed radiologically before and after the operation. And 3-dimensional CT was used to evaluate the supination of the first metatarsal head. Clinical results were assessed by American Orthopaedic Foot and Ankle Society (AOFAS) score and persistence of lesser metatarsalgia. Results: First-second intermetatarsal and hallux valgus angles were reduced from the mean pre-operative values of $14.2^{\circ}$ and $32.5^{\circ}$ to $8^{\circ}$ and $12.5^{\circ}$, respectively, 12 months after the operation. And the supination of the first metatarsal head was confirmed by 3-dimensional CT. The mean AOFAS score improved from 41.4 points pre-operatively to 87.2 points at follow-up. Lesser metatarsalgia still remained in 2 patients (2 feet). Conclusion: Modified scarf osteotomy would be an effective surgical procedure, especially, for achieving downward displacement and supination of the first metatarsal head in hallux valgus with lesser metatarsalgia.

그 순간_은혜기 : 하나님이 하셨습니다

정진화 기독교대한성결교회 활천사 2015 활천 Vol.734 No.1

스컬용융법에 의한 패각을 이용한 큐빅지르코니아 단결정 성장

정진화,연석주,석정원,Jung, Jin-Hwa,Yon, Seog-Joo,Seok, Jeong-Won 한국결정성장학회 2013 韓國結晶成長學會誌 Vol.23 No.3

In this research, cubic zirconia is synthesized with a refined CaO from shells as a stabilizer through Skull melting method. The proper process time and concentration are defined by Hydration reaction to produce the refined CaO after two different treatments using 0.1 mol% of HCl respectively with Cockle shell. The highest purity of CaO is reached when the shell is immersed in 1 mol% HCl. In Hydration reaction step, the pure $Ca(OH)_2$ is produced at $45^{\circ}C$ for 24 hours. The highest purity of CaO is measured when the $Ca(OH)_2$ is treated by heat at $1200^{\circ}C$ for 5 hours. The single crystals are grown through Skull melting method by adding the different contents of the refined CaO from 10 mol% to 30 mol% into $ZrO_2$. The frequency of High-frequency oscillator used for Skull melting method is 3.4 MHz. The descending speed of the single crystal is 3 mm/hour. The grown length of the single crystal is 4 cm. As a result of this study, 15 mol% of CaO has the best crystallinity. 본 연구에서는 안정화제로, 패각으로부터 정제한 CaO를 사용하여 Skull melting법으로 큐빅 지르코니아를 성장시켰다. 꼬막 패각을 HCl을 0.1~1 mol%로 1차 처리한 후 수화반응을 거쳐 최적의 처리시간과 농도를 검토하였다. HCl을 1 mol%의 농도로 처리했을 때 가장 순도가 높았으며 수화반응시 $45^{\circ}C$의 온도로 24시간 동안 반응시킬 때 완전한 $Ca(OH)_2$ 를 얻을 수 있었다. $Ca(OH)_2$를 $1200^{\circ}C$에서 5시간 처리하였을 때 CaO의 순도가 가장 높게 측정되었다. 패각으로부터 얻어진 CaO를 $ZrO_2$에 첨가하여 함량을 10~30 mol% 로 변화시켜 Skull melting법으로 단결정을 성장시켰다. Skull melting법에 사용된 고주파 발진기의 주파수는 약 3.4 MHz이며 단결정의 하강속도는 시간당 3 mm로 4 cm 길이로 성장시켰다. 실험결과 CaO의 함량이 15 mol% 일 때 결정성이 가장 우수했다.

음주와 범죄의 관계: 알코올 소비량과 강간범죄의 관계를 중심으로

정진화,이윤석 한국경제통상학회 2018 경제연구 Vol.36 No.1

본 논문은 시도 경찰청의 범죄통계와 패널고정효과 모형을 이용하여 알코올 소비량과 강간범죄 사이의 인과관계를 규명한다. 특히 알코올 소비량과 강간범죄율 사이의 내생성 문제를 해소하기 위해 한국인의 알코올 소비량 중 70%를 점하는 소주 산업의 수직적 제약구조를 이용하였다. 본 논문의 실증분석 결과에 따르면 알코올 소비량은 강간범죄와 양(+)의 관계가 식별되었으며, 검거율과 기소율 등 억지정책의 효과와 비교하여 뚜렷한 효과가 있는 것으로 나타났다. 이는 강간범죄를 예방하기 위한 정책대안으로써 음주관리정책의 중요성을 보여준다. Using a state-level panel data over the years 1994–2010 from the Korea National Police Agency, this paper explores the potential relationship between alcohol consumption and rape. Specifically, in order to address the problem of endogeneity between alcohol consumption and crime, this study introduces a instrumental variable, which derived from the vertical restraint structure of the Korean distilled liquor industry. The results of empirical analysis show that alcohol consumption is positively correlated with rape crime and that it is more effective than the deterrence policies like arrest rate and indictment rate. Also, arrest rate is observed to have a negative relationship with rape crimes. This paper emphasizes the importance of alcohol management policy as a policy alternative to prevent rape crime.