韓國人 心臟卵圓孔에 關한 形態學的 硏究 : 한국인 심장란원공에 관한 형태학적 연구

김정록 부산의대 1973 부산의대잡지 - 부산대학교 의과대학 Vol.13 No.1

Design of the dual-buoy wave energy converter based on actual wave data of East Sea

김정록,권혁민,정원무,조일형,조홍연 대한조선학회 2015 International Journal of Naval Architecture and Oc Vol.7 No.4

A new conceptual dual-buoy Wave Energy Converter (WEC) for the enhancement of energy extraction efficiency is suggested. Based on actual wave data, the design process for the suggested WEC is conducted in such a way as to ensure that it is suitable in real sea. Actual wave data measured in Korea’s East Sea (position: 36.404 N° and 129.274 E°) from May 1, 2002 to March 29, 2005 were used as the input wave spectrum for the performance estimation of the dual-buoy WEC. The suggested WEC, a point absorber type, consists of two concentric floating circular cylinders (an inner and a hollow outer buoy). Multiple resonant frequencies in proposed WEC affect the Power Ttake-off (PTO) performance of the WEC. Based on the numerical results, several design strategies are proposed to further enhance the extraction efficiency, including intentional mismatching among the heave natural frequencies of dual buoys, the natural frequency of the internal fluid, and the peak frequency of the input wave spectrum.

골격성 Ⅲ급 부정교합자의 편악수술과 양악수술후 재발경향에 관한 비교연구

김정록,손우성 대한치과교정학회 1995 대한치과교정학회지 Vol.25 No.5

본 연구는 골격성 Ⅲ급 부정교합 환자에서 술전 상태오 수술방법 사이의 관계 및 악교정 수술후 재발경향을 조사하기 위하여 시행하였다. 연구 대상으로는 악교정수술을 받은 31명(남자 17명, 여자 14명)을 선택하였고, 이중 20명은 편악수술, 11명은 양악수술을 시행하였으며, 평균연령은 22.5세였다. 각 대상에서 술전, 수술직후, 1년 이상 경과 후의 측모두부방사선 규격사진을 채득하여, 투사도를 작성하고, 분석하여 다음과 같은 결과를 얻었다. 1. 하악만을 수술한 군보다 양악 동시수술군에서 하악체의 길이가 4.24mm, 하안모 고경의 길이가 4.64mm, 하순의 길이가 4.13mm 더 길게 나타났으며, 반면 수평피개도는 3.13mm 더 작게 나타났다. 2. 하악만을 수술한 군에서 8.95±4.45mm 하악이 후방이동되었으며, 양악 동시수술군에서 상악은 5.15±3.46mm 전방이동되었고, 하악은 7.24±9.11mm 후방이동되었다. 3. 최소 1년 이상 경과 후와 수술직후의 변화에 있어서 양악 동시수술군에서 A point는 1.02±2.14mm, Pn에서는 1.05±1.48mm, Sn에서는 1.55±1.37mm 후방이동되었다. 4. 최소 1년 이상 경과 후와 수술직후의 변화에 있어서 B point에서 하악만을 수술한 군은 28% 양악 동시수술군은 8%, B´point에서 하악만을 수술한 군은 24%, 양악 동시수술군은 3% 전방이동되었다. The purpose of this study was to investigate the degree of relapse following orthognathic surgery and the relationship between preoperative state and the methods of orthognathic surgery in skeletal Class Ⅲ patients. Thirty-one patients were selected(17 men, and 14 women) for this study, who had received orthognathic surgery(20 one jaw surgery, and 11 two jaw surgery). The mean age was 22.5 years. Their lateral cephalograms, that were taken preoperatively, immediate postoperatively and follow-up over one year, were traced and analysed. The results were as follows : 1. In two jaw surgery, mandibular length, lower facial height and lower lip length were 4.24mm, 4.64mm and 4.13mm longer than in one jaw surgery, respectively. But in two jaw surgery, overjet was 31.3mm shorter than in one jaw surgery. 2. In one jaw surgery, mandible was move back 8.95±4.45mm at B point. In two jaw surgery, maxilla was moved forward 5.15±3.46mm and mandible was moved back 7.24±9.11mm at B point. 3. Between postoperation and follow-up over on year, A point, A´point, Pn and Sn were moved backward 1.02±2.14mm, 1.73±1.63mm, 1.05±1.48mm and 1.55±1.37mm in two jaw surgery, respectively. 4. Between postoperation and follow-up over one year, in one jaw surgery, B point was moved forward 2.58±4.22mm and B´point was moved forward 1.95±4.39mm. In two jaw surgery, B point was moved forward 0.65±2.88mm and B´point was moved forward 0.19±3.32mm. In one jaw surgery, relapse rate was 28% at B point and 24% at B´point, whereas in two jaw surgery, relapse rate was 8% at B point and 3% at B´point.

Wave power extraction by multiple wave energy converters arrayed in a water channel resonator

김정록,Cho Il Hyoung 대한조선학회 2021 International Journal of Naval Architecture and Oc Vol.13 No.1

The wave power extraction by multiple Wave Energy Converters (WECs) deployed in a Y-shaped Water Channel Resonator (WCR) has been investigated. A WCR consists of a long water channel, and a V-shaped wave guider installed at the entrance of a water channel. If the period of the incident waves coincides with the natural periods of the fluid in a WCR, resonance occurs, as a result, the internal fluid in a WCR is greatly amplified. To estimate the wave power by multiple WECs placed at the antinodal points in a WCR, the heave motion response, time-averaged power, and capture width ratio were calculated for several design parameters. Also, the systematic model tests were conducted in a 2D wave tank. The numerical results are in good agreement with the experimental data. It was verified that a WCR helps the WECs to produce electricity more effectively by amplifying the wave energy in a WCR.

내부유체 공진을 이용한 ‘Y’자 수로형 공명구조물내 파도응답 특성

김정록,조일형 한국해안,해양공학회 2019 한국해안해양공학회 논문집 Vol.31 No.3

In this study, the wave responses in a ‘Y’shape water channel resonator for amplifying wave energy of a low density has been investigated. A water channel resonator is composed of the long channel and wave guider installed at the entrance. If the period of the incident waves coincides with the natural period of the fluid in a water channel resonator, resonance occurs and the internal fluid amplifies highly to a standing wave form. In order to analyze the wave response in a water channel resonator, we used the matched asymptotic expansion method and boundary element method. The both results were in good agreement with the results of the model test carried out in the two-dimensional wave tank of Jeju National University. Wave guider has an optimum length and installation angle according to the period of the incident wave, and especially effective in enhancing the amplification factor in a period range deviated from the resonance period. It is expected that the wave energy can be effectively extracted by placing the point absorber wave energy converter at the position of anti-node where the maximum wave height is formed by the internal fluid resonance. 본 연구에서는 에너지 밀도가 낮은 해역내의 파랑에너지를 증폭시키기 위한 ‘Y’자 수로형 공명구조물내 파 도응답 특성을 살펴보았다. 수로형 공명구조물은 긴 수로와 수로 입구에 유도판(wave guider)을 설치한 형태이다. 입 사파의 주기가 공명구조물내 유체의 고유주기와 일치하면 공진이 발생하여 내부유체는 정지파 형태로 크게 증폭한 다. 수로내의 파도응답을 해석하기 위하여 정합점근전개법과 경계요소법을 이용하였다. 계산결과는 제주대학교 2차 원 조파수조에서 수행된 실험결과와 비교하였고 일치함을 확인하였다. 파랑유도판은 입사파의 주기에 따라 최적의 길이와 설치각도가 존재하며 특히, 공진주기에서 벗어난 주기 대역에서 증폭비를 높이는데 효과적이었다. 수로형 공 명구조물내 내부유체의 공진으로 최대파고가 형성되는 파복(anti-node) 위치에 점흡수식 파력발전장치를 위치시킨다 면 효과적으로 파랑에너지를 추출할 수 있을 것으로 기대된다.

宗廟 樂章 譯註

金正祿,金龍燮 국어국문학회 1960 국어국문학 Vol.- No.22

항공마일리지의 편익과 지식이 소비자의 몰입과 가치 및 충성도에 미치는 영향에 관한 연구

김정록,최윤홍 호남대학교 대학원 2012 호남대학교 대학원 논문집 Vol.8 No.-

Since more and more people have experienced long-haul travel with more free time and higher income from work, customer's interest in use of airline mileage has been highly increased. However, most recent studies were focused on airline mileage program as a service factor. Hence, this study aims to examine the influence of benefit from using mileage, convenience, and knowledge on customer loyalty along with mileage value perception. Moreover, it tends to investigate how the differences appear between its correlations depend on customer's personal experience with airlines. In order to do this, the data were collected from 187 tourists out of 210 who had used airline service recently and the final samples of 182 were used for statistics analysis. SPSS 11.1 for windows was used to analyzed the collected data. It has analyzed validity, reliability, and multiple regression in order to test hypotheses. A summary of the analyzed results is as follows: First, the study presents that customer's use benefit of mileage and convenience influence on mileage value perception while knowledge about mileage program does not. Second, it showed that customer's use benefit of mileage, convenience, and experience influence on customer commitment. It implies that mileage is an important factor to choice which airline to fly with. Third, the study showed that mileage value perception influences on customer commitment. Fourth, when it comes to use of mileage program, mileage value perception and customer commitment influence on customer loyalty. Fifth, it has shown that customer's personal experience of using mileage influences on convenience, customer commitment, and loyalty. In other word, the more experience using mileage program customers have, the higher convenience, use benefit, and loyalty they show. Therefore, airlines should notice that use of airline mileage program is an important factor to increase customer loyalty encouraging more frequent use. Further more, to customer's benefit, airlines should offer more various mileage programs to help them perceive the value of the mileage use. Key words : Airline Mileage, Customer's Perceived Use Benefit, Mileage Ease- of-use, Knowledge, Commitment, Mileage Value Perception, Customer Loyalty.

흉쇄유돌근에 발생한 근육 내 혈관종: 흔하지 않은 경부 종물

김정록,김수종,강병진,우정수 대한이비인후과학회 2018 대한이비인후과학회지 두경부외과학 Vol.61 No.2

Hemangiomas are the most common benign tumors in infancy, occurring most often on cutaneous and mucosal surfaces. Although less than 1% of hemangiomas occur in skeletal muscle, 15% of intramuscular hemangiomas arise in the head and neck musculature. Less than 10 cases of the sternocleidomastoid muscle have been reported in the English literatures. The masseter muscle is most commonly involved in the head and neck. Clinically, these tumors are present as distinct, localized, rubbery swelling. Neck computed tomography scan with enhancement may suggest a vascular mass within the muscle while angiography may detect feeding arteries in large intramuscular hemangiomas. The treatment of the hemangiomas is based on location, accessibility, depth of invasion, age, and cosmetic considerations. The optimal treatment is complete wide resection including the cuff of surrounding muscle. We report a case of hemangioma that occurred in the sternocleidomastoid muscle along with a with literature review.

외해 개방형 정박지의 안전성 향상에 관한 연구

김정록,국승기,Jeong-Rok Kim,Seung-Gi Gug 한국항해항만학회 2015 한국항해항만학회지 Vol.39 No.3

최근 각종 해양사고 발생으로 인하여 해양 관련한 안전사고에 대한 문제들이 대두되고 있다. 이러한 사고 중 우리나라 연안에 위치 한 31개소 무역항의 지정된 정박지 중 특히 외해개방형 정박지 경우 기상악화로 인하여 유효한 선박 파주력을 확보하지 못함으로서 주묘가 발 생하여 사고 위험이 많아지고 있으나 정박선박의 안전성 확보나 정박지의 효율적인 운영을 위한 체계적인 정박지 안전관리 기준안은 미흡한 실정이다. 또한, 항만의 지리적인 위치 및 지형적인 특성으로 인하여 특정 조건의 외력에 취약한 외해 개방형 정박지 경우에는 태풍은 물론 강 한 돌풍 등에 의해 선박은 주묘 가능성이 높아지고 이로 인한 2차 사고 발생이 우려된다. 본 논문에서는 외해개방형 정박지의 사례로 포항항의 경우 최근 주묘로 인한 해양사고 사례를 검토하여 입출항 선박의 크기별 한계외력을 계산하고 정박지 안전성을 확보할 수 있는 한계 외력을 선박 크기별 한계외력의 기준을 정하는 연구로 기존 개별 선박의 정박안전성 평가에 관한 연구들과 달리 정박선박의 안전성 확보 및 효율적인 정박지 운영을 위해 필요한 정박지 관리에 관한 기초적인 기준으로 활용할 수 있을 것으로 판단된다. Recently, Due to variable marine accident occurred, problems relating to marine accidents have been raised. Of these accidents, designated anchorage of Korea coastal port, spcially open-sea anchorage, occurred dragging anchor and accidents are likely, due to failure to obtain a valid ship’s holding power so that it is the situation unsatisfactory that ensuring the safety of the anchored ship and anchorage systematic safety management stadars for the efficent operation of the anchorage. also in case of open-sea anchorage vulnerable to external force of certain conditions due to geographical location and topographical characteristics of the port, accidents are likely dragging anchor by typoon or suddenly strong wind and secondary accidents are concerned .This paper shows standard of limit external force to ensure the safety anchorage each of ship’s size through review marine accidents on P ohang port, also it is determined to be used as a basic reference for anchoring safety and efficient anchorage management.

臍帶眞結節로 因한 子宮內胎兒死亡의 1例

金正錄,姜甲垂,宋敏子,扈三秀 大韓産婦人科學會 1968 大韓産婦人科學會雜誌 Vol.11 No.12