고위험 증식당뇨망막병증에서 범망막광응고 대신에 시행한 유리체절제술

조형훈,최광주,Hyung Hun Cho,M,D,Gwang Ju Choi,M,D 대한안과학회 2007 대한안과학회지 Vol.48 No.1

Purpose: This research is to evaluate the effectiveness of vitrectomy on early vision recovery compared to that of panretinal photocoagulation for the high-risk proliferative diabetic retinopathy (PDR) patients. Methods: A retrospective chart review of 84 high-risk PDR patients (100 eyes) who had undergone panretinal photocoagulation or vitrectomy under the diagnosis the high-risk PDR and followed up at least 12 months. Authors divided them into two different groups ; one with who received PRP, and another with vitrectomy. We investigated both groups` vision change every 3, 6, and 12 months after the treatment. Results: The Vitrectomy group patients showed higher percentage of vision improvement and lower percentage of vision decrease (p≤0.05) than the PRP group patients in 3rd and 6th month. Macular edema decreased in the Vitrectomy group and increased in the PRP group in the 3rd month. Need for additional surgery due to complication showed 26% in the PRP group, and 12% in the Vitrectomy group. Conclusions: We conclude the vitrectomy is more efficient method than PRP for high-risk PDR patients who are in need of early vision recovery.

Sartre 사상(思想)의 변증법적 통합 -시론(試論)(1)

조형훈 전남대학교 인문학연구소 1983 용봉인문논총 Vol.13 No.-

Sartre의 「La Nausee」에 나타난 상상작용(想像作用)

조형훈 전남대학교 인문학연구소 1982 용봉인문논총 Vol.12 No.-

Analysis of C-shaped root canal configuration in maxillary molars in a Korean population using cone-beam computed tomography

조형훈,민정범,황호길 대한치과보존학회 2016 Restorative Dentistry & Endodontics Vol.41 No.1

Objectives: The purpose of this study was to investigate the incidence of root fusion and C-shaped root canals in maxillary molars, and to classify the types of C-shaped canal by analyzing cone-beam computed tomography (CBCT) in a Korean population. Materials and Methods: Digitized CBCT images from 911 subjects were obtained in Chosun University Dental Hospital between February 2010 and July 2012 for orthodontic treatment. Among them, a total of selected 3,553 data of maxillary molars were analyzed retrospectively. Tomography sections in the axial, coronal, and sagittal planes were displayed by PiViewstar and Rapidia MPR software (Infinitt Co.). The incidence and types of root fusion and C-shaped root canals were evaluated and the incidence between the first and the second molar was compared using Chi-square test. Results: Root fusion was present in 3.2% of the first molars and 19.5% of the second molars, and fusion of mesiobuccal and palatal root was dominant. C-shaped root canals were present in 0.8% of the first molars and 2.7% of the second molars. The frequency of root fusion and C-shaped canal was significantly higher in the second molar than the first molar (p < 0.001). Conclusions: In a Korean population, maxillary molars showed total 11.3% of root fusion and 1.8% of C-shaped root canals. Furthermore, root fusion and C-shaped root canals were seen more frequently in the maxillary second molars.

Sartre의 realisme

조형훈 전남대학교 인문학연구소 1981 용봉인문논총 Vol.11 No.-

일학습병행 기업현장교사의 직무자율성, 자기효능감, 학습민첩성, 잡 크래프팅 간의 구조적 관계

조형훈,전주성 순천향대학교 인문학연구소 2022 순천향 인문과학논총 Vol.41 No.2

The purpose of this study was to investigate the structural relationship between job autonomy, self-efficacy, learning agility, and job crafting of workplace trainers who participated in a work and learning dual system. The subjects of this study are 223 workplace trainers serving at work and learning dual system participating companies across the country. The analysis of the collected data was conducted using structural equation modeling. The results of this study are as follows. First, the job autonomy of workplace trainers at companies participating in a work and learning dual system has not had a significant direct impact on job crafting. However, self-efficacy and learning agility have been shown to have a significant direct effect on job crafting. It was also confirmed that job autonomy and self-efficacy had a direct impact on learning agility. Second, job autonomy and self-efficacy of workplace trainers have been shown to have an indirect effect on job crafting through learning agility as acuity. 이 연구의 목적은 일학습병행에 참여하는 기업현장교사의 직무자율성, 자기효능감, 학습민첩성, 잡 크래프팅 간의 구조적 관계를 분석하는 것이다. 본 연구의 대상은 전국의 일학습병행 참여 기업에 재직 중인 223명의 기업현장교사이며, 수집된 자료는 기술통계 및 구조회귀모델링 등을 이용하여 분석하였다. 본 연구의 결과는 다음과 같다. 첫째, 일학습병행에 참여하는 기업현장교사의 직무자율성은 잡 크래프팅에 유의한 직접적인 영향을 미치지 않았다. 그러나 자기효능감과 학습민첩성은 잡 크래프팅에 유의한 직접적인 영향을 미쳤다. 또한, 직무자율성과 자기효능감은 학습민첩성에 직접적인 영향을 미쳤다. 둘째, 기업현장교사의 직무자율성과 자기효능감은 학습민첩성을 매개로 하여 잡 크래프팅에 간접적인 영향을 미쳤다.

각막 굴절교정수술 방법에 따른 안압 변화 비교

조형훈,박명희,임용우,문정일,Hyung Hun Cho,Myoung Hee Park,Yong-Woo Im,Jung-Il Moon 대한안과학회 2011 대한안과학회지 Vol.52 No.3

Purpose: To evaluate differences in intraocular pressure change after three different methods of corneal refractive surgery. Methods: The medical records of 296 eyes of 150 patients who underwent corneal refractive surgery were reviewed. Spherical equivalent, central corneal thickness (CCT), and intraocular pressure before surgery, and one month, three months and six months after surgery were analyzed. Results: The patients included those having undergone laser-assisted in situ keratomileusis (LASIK; 96 eyes), IntraLASIK (98 eyes), laser assisted sub-epithelial keratomileusis (LASEK; 102 eyes). Post operative intraocular pressure in ablated corneal depth and in CCT showed a meaningful correlation. Intraocular pressure decreased significantly after refractive surgery; however, there were no differences among the three groups. Conclusions: Post operative intraocular pressure after corneal refractive surgery is influenced by CCT. There were no differences in intraocular pressure change among the three groups. J Korean Ophthalmol Soc 2011;52(3):308-314

망막색소상피변성 환자에서 줄기세포 이식

조형훈,최광주 대한안과학회 2006 대한안과학회지 Vol.47 No.12

Purpose: This study was to evaluate the effect of stem cell transplantation into the sub-retinal space in retinitis pigmentosa (RP) patients for improving their visual acuity. RP is a progressive hereditary disease that leads to the blindness, and there is no reliable treatment for recover the disease until now. Methods: The author transplanted mesenchymal stem cell extracted from umbilical cord blood into the sub-retina of four RP patients recommended by Korea RP association, and checked the changes of their visual acuity and electroretinograms. Results: There was no obvious improvement in their visual acuity and elecroretinograms compared with preoperative state. Two patients, however, experienced slight improvements of their color sense and peripheral visual fields, and slight decrease of photophobia. Although there were no any obvious complications in relation to the stem cell transplantation, surgical procedures developed complications such as vitreous hemorrhage and retinal detachment. Conclusions: Mesenchymal stem cell derived from umbilical cord blood could not improve visual acuity and electroretinogram of RP patients.

근관치료 영역에서 Cone Beam CT의 활용

조형훈(Hyoung-Hoon Jo) 대한치과의사협회 2019 대한치과의사협회지 Vol.57 No.7

The most important part of everyday root canal treatment is diagnosis about the morphology of tooth, root and root canal. Usually this procedure is performed by visual examination and radiographic (panoramic/periapical) examination. However, 2-dimentional radiography has several limitations such as imposition of anatomic structures including buccal/lingual root canals and distortion of images. Recently, owing to the increased interest in dental implant and affordable cost of CBCT equipment, CBCT has been introduced widely in local dental clinics. CBCT is characterized by their lower radiation dose and shorter exposure time than conventional CT scan, and ability of 3-dimentional reconstruction of the dento-alveolar structure. Also in endodontic field, the data from CBCT could be very helpful in diagnosing complex root canal anatomy, apical periodontitis, cause of failure and in determining treatment plan. However, there are some limitations such as radiation dose and artifact. Therefore, clinicians should know about indication, advantages and limitations of CBCT, and properly use it for successful root canal treatment to save the natural teeth.

스위스 직업교육훈련 체제의 이해: 도제훈련을 중심으로

조형훈(Hyung Hoon Cho),전주성(Ju Sung Jun) 한국성인교육학회 2018 Andragogy Today : International Journal of Adult & Vol.21 No.4

이 연구의 목적은 스위스 직업교육훈련 체제 중 도제훈련을 분석하여 우리나라의 산학일체형 도제학교 개선을 위한 시사점을 제시하는 데 있다. 이를 위해 스위스의 직업교육훈련 체제의 운영방식과 현황을 조사했다. 스위스의 직업교육훈련에서 다수를 차지하는 VET(Vocational Education and Training)는 일 기반 학습의 이원화 방식으로 직업학교와 현장에서 체계적인 교육이 진행된다. 기업 중심의 운영 및 도제훈련의 운영 주체인 연방, 주, 전문기관이 명확한 역할 구분과 협력체제를 구축하고 있다. 우수 교사의 양성과 철저한 질, 사회적 전통과 신뢰를 기반으로 도제훈련을 운영해왔다. 스위스 직업교육제도인 VET를 분석하여 우리나라 일학습병행제 중 산학일체형 도제학교를 위한 시사점을 제시하면 다음과 같다. 첫째, 산학일체형 도제학교가 발전하기 위해서는 관련 기관의 협력 체계 구축이 필요하다. 둘째, 효과적 운영을 위해서 구체적이고 명확한 법적 개정이 필요하다. 셋째, 산학일체형 도제학교 운영에 있어서 기업 역할의 확대가 요구된다. 넷째, 교육 과정 개발과 운영에 있어 유연성과 민첩성이 필요하다. 다섯째, 산학일체형 도제학교 담당 교사에 대한 적합한 교사 양성 과정 및 관리 시스템이 필요하다. 마지막으로 산학일체형 도제학교 제도에 대한 인식전환과 사회적 신뢰를 형성해야 한다. The purpose of this study was to examine the vocational education and training system of Switzerland, specially apprenticeship training and to suggest some implications. To do this, we investigated the operations and status of the vocational education and training system in Switzerland. VET(Vocational Education and Training), which is the majority in vocational education and training in Switzerland, is a systematic education in vocational schools and on the spot, as a dualization of work-based learning. The federal, state, and specialized agencies, which are the operators of the apprenticeship training, were establishing clear division of roles and cooperation system. Switzerland has conducted apprenticeship training based on the training of outstanding teachers, excellent quality, social tradition and trust. The Swiss vocational education and training system suggests some implications for the industry-academic integrated apprenticeship school in Korea. First, it is necessary to establish the cooperation system of related institutes. Second, specific and clear legal amendments are necessary for its operation. Third, it is required to expand the role of the corporation. Fourth, flexibility and agility are needed for the curriculum development and operation. Fifth, it is necessary to develop a proper teacher training and management system. Finally, recognition transition and social trust of industry-academic integrated apprenticeship school should be formed.