원판형 진행파 초음파 모터의 동특성 해석

한상훈,김종선,변흠필 한국 항공대학교 항공산업기술연구소 1998 航空宇宙産業技術硏究所 硏究誌 Vol.8 No.-

본 연구에서는 압전작동기를 이용한 원판형 진행파 초음파 모터에 대한 동역학적 모델과 성능분석을 수행하였다. 초음파 모터는 거의 대부분이 모터가 사용될 용도에 따라 그 외경의 크기가 미리 정해지므로 이러한 기본 제원이 설정된 후 해석적 모델을 이용한 모터변수 선정 및 동특성 해석에 관한 수치적 예를 보였다. 고정자의 자유 진동해석과 압전작동기에 의해 가진된 강제진동해석, 고정자산의 모델, 고정자와 회전자와의 접촉특성모델들을 통해 고정자의 진동형상, 고유진동수, 고정자산의 배열, 회전속도, 전달토크, 응답특성등 모터의 동특성과 성능특성을 수치적으로 연구하였다. This paper deals with the dynamic analysis and the performance prediction of a piezoelectric annular traveling wave ultrasonic motor. The vibrational characteristics of the stator plate is studied based on the laminated plate theory and the rotor is modeled as a rigid plate. It is also studied some relations between the mechanism of friction, the pressure distribution and other driving factors using Hertzian contact theory. The transient and steady state characteristics of the motor such as natural frequencies mod shapes, speed characteristics, driving torque, etc, are studied and compared with the other research works through the numerical analysis.

뇌졸중 환자와 보호자의 도수치료에 대한 시간 만족도에 대한 조사

김경,이한기,구봉오,문상은,박태흠 마산대학 보건과학연구소 2002 保健科學論集 Vol.3 No.-

The purpose of this study is to figure out the satisfaction of time management regarding manual therapy such as neurodevelopmental treatment(NDT), proprioceptive neuromuscular facilitation(PNF), and mat exercise, etc. among hemiplegic patients and their guardians. Untill from May to June, 2001, the quantitative satisfaction of time management was investigated by regarding the consumer as the patients and guardians at four general hospitals settings and one geriatric setting. The results of the study were as follows: 1. Among the subjects, the number of guardians that answered was 59 subjects (62.77%) and the percentage was the highest. The number of the age between 50 and 59 was 52subjects(55.32%) and the number of man was 53subjects(56.38%) and the percentage was slightly high. 2. The number of the subjects whom answered that the physical therapy using thermotherapy and electrotherapy was effective was only 4subjects (4.26%) and that of the subjects whom answered that general manual therapy such as NDT, mat exercise, and PNF was effective was 74subjects(78.72%) and the percentage was the highest. 3. The time of manual therapy that the subjects thought about was less than between 15 and 20min and the number of the subjects answered so was 28subjects(29.79%) and the percentage was the highest. The number of subjects whom answered that the time was not enough was 46subjects(48.94%) and that showed the high rate. 4. The patients that was treated with manual therapy per one physical therapist during one day were 18 subjects(51.43%) and the number was slightly less. The number of subjects that physical therapist treated during one day was between 20 and 30subjects. The number of them was 28(29.79%) and the percentage showed the significant rate. Currently the time that physical therapist performed manual therapy was between 20 and 25min, but the appropriate time that the therapist thought for the patient was less than the time between 30 and 35min. The number of subjects that thought so was 17subjects(48.57%) and it slightly showed the high rate.

알갱이 군의 무더기 현상에 관한 연구

한지흠 ( Ji Heum Han ),한원흠 ( Won Heum Han ),이광희 ( Kwang Hee Lee ) 한국접착및계면학회 2013 접착 및 계면 Vol.14 No.4

알갱이 군에 형성되는 무더기 현상을 이해하기 위하여, 좁쌀, 모래, 은박 원판 등의 알갱이 군에 대하여 수직진동 및 회전진동을 적용하여 이들의 움직임을 조사하였다. 수직진동의 경우, Gerner의 연구처럼 무더기가 형성되었으나, 알갱이 무게와 관계없이 좁쌀, 모래, 은박원판의 무더기가 순으로 형성되었고, 은박원판의 무더기는 좁쌀과 모래에 비해 훨씬 복잡하게 나타났다. 또 회전진동의 경우, 알갱이는 용기 벽과 중력 및 알갱이 끼리 탄성 밀리기에 의해 중앙부위가 위로 솟아오르는 현상이 나타났으며, 회전진동 진폭이 큰 경우엔 나선형 문양이 나타나기도 했다. 이는 알갱이 군에원심력, 알갱이 간 인력 및 세차운동 등이 가해지면, 무더기 현상이 지연되거나 더 난잡해짐을 의미한다. 이러한 사실로부터 화공재료 등의 알갱이의 무더기 현상은 용기의 진동 특성뿐 아니라 알갱이간 인력의 유무에 따라서도 결정됨을 알 수 있다. In order to elucidate the granular heaping phenomenon, the movement behaviors of 3 different types of granule (millet, sand and thin foil disc) have been investigated by applying the vertical or the rotational vibration to each of the 3 vessels, respectively containing one of the 3 types of granule. In case of vertical vibrations, all of them showed the heaping phenomenon like Gerner`s simulation, and that in the order of the millet, sand and thin foil disc, regardlessly of weight. Especially, a heaping of disc granules was proven to be relatively delayed, and that with several small complex clutters. For rotational vibration, the central area of vessel turned out to rise up due to the repulsive force by vessel wall as well as the collision between elastic granules, right after the turning point of vibration. Even spiral pattern was made when the rotational vibration amplitude got higher. From these facts, one can see that the heaping be characterized by the inclusion of attractive granules as well as the vibrational type applied to granule vessel.

공기-유리 계면에서 광학정보 전달에 미치는 불완전 전반사 및 수분 효과

한원흠 ( Won Heum Han ),한지흠 ( Heum Han ),김지현 ( Jee Hyen Kim ),정형식 ( Hyung Sik Jung ),이문호 ( Moon Ho Lee ) 한국 접착 및 계면학회 2012 접착 및 계면 Vol.13 No.2

공기-유리 사이의 계면에서 광학적 정보가 전달되는 메카니즘을 알아보기 위하여, 유리컵을 잡은 손가락 지문(골과 능선)의 선명도에 미치는 불완전 전반사(Frustrated Total Internal Reflection: FTIR)와 수분 효과를 이론과 실험을 통해 조사하였다. 물이 든 컵을 잡은 손가락의 경우, 지문이 아주 선명하였는데 이는 컵 바닥으로부터 출발한 빛이 유리벽에서 전반사(Total Internal Reflection: TIR)된 빛과 지문 능선에서 반사된 빛의 세기가 서로 달라서 나타남을 기하광학, Fresnel 이론, TIR및 FTIR 현상을 이용하여 밝혀내었다. 또한 공기-유리 경계면에서 지문의 선명도에 미치는 FTIR과 수분 효과를 실험적으로 관측한 결과, 지문이 선명하게 보이는 현상은 FTIR 현상보다는 수분의 효과가 훨씬 더 지배적이라는 사실을 처음으로 규명하였다. The transfer mechanism of optical information at the interface of air and glass (the air-glass IF) has been investigated by thoroughly fulfilling the theoretical and experimental analyses regarding the FTIR (Frustrated Total Internal Reflection) and moisture effects on the fingerprint onto a glass cup with water. As for the fingerprint onto a glass cup with water its image was observed to be very vivid, which turned out to be due to the difference between the two light intensities reflected on the air-glass IF and the wet fingerprint ridge by manipulating the optical theories such as Fresnel relation, Snell`s law, FTIR, GT (general transmission) and so on. In addition, the experimental inspection for FTIR and moisture effects on the fingerprint image also evidenced the fact that the vivid fingerprint image originated from the moisture effect rather than the FTIR phenomenon.

GOD’S PEOPLES IN THE NEW JERUSALEM

HAN Chul-Heum(한철흠) 장로회신학대학교 기독교사상과 문화연구원 2018 장신논단 Vol.50 No.4

이 논문에서 필자는 요한계시록 21장 3절이 하나님의 백성이 아니라 하나님의 백성들에 대하여 말하며, 이 하나님의 백성들은 새 예루살렘의 중심에 거하는 하나님의 종들 및 그 주변에 거하는 만국을 포함한다는 주장을 펼친다. 요한계시록이 묵시문헌 장르에 속하는 이상 그 문자적 의미는 상징적 의미로 인해 다소 상쇄된다는 점을 감안하면서, 필자는 만국이 구원을 받았음에도 불구하고 새 예루살렘에 묘사된 그들의 위치가 주변적인 점에 주목한다. 첫째로, 하나님의 종들이 하나님의 얼굴을 보며 하나님을 섬기는 반면에(계 22:3-4), 만국은 새 예루살렘으로 들어가 그 빛 가운데로 다닌다(계 21:24-26). 둘째로, 짐작건대 하나님의 종들이 생명나무의 실과를 먹는 반면에, 만국은 치료를 위해 생명나무의 잎사귀들을 이용한다(계 22:2). 새 예루살렘에서 중심적인 위치를 차지하는 하나님의 종들에 비해 주변적인 위치를 차지하는 만국에 대한 이와 같은 묘사는 두 가지 사실과 연결된다. 첫째로, 새 예루살렘이 내려오기 전에 만국은 대체적으로 부정적인 이미지로 등장하였다(계 11:18; 19:15; 20:3, 8). 둘째로, 유대 묵시 전통은 이방인의 종말론적 운명에 대하여 다양한 관점을 견지하는데, 특히 이방인들이 이스라엘에 종속된다는 전통과 동시에 이방인들이 종말론적 구원에 완벽하게 참여한다는 전통이 공존하였다. 이 두 사실을 고려하는 가운데 요한은 과거에 바빌론과 결탁한 만국 및 그로 인해 박해를 받은 하나님의 종들을 완벽하게 대등한 위치에 놓지 않음으로써 묵시록적 정의를 반영하고 있다. This article argues that John envisions God’s peoples, rather than God’s people, in the New Jerusalem (Rev. 21:3), comprising both God’s servants as the central people of the new city and the repentant nations as its “peripheral” dwellers. In so doing, this study foregrounds the fact that the saved status of the nations is restricted to a certain extent by their “marginalization” in the city, although its literal meaning must be balanced by its symbolic meaning due to the fact that Revelation belongs to the genre apocalypse. First, the nations enter the New Jerusalem to walk by its light (Rev. 21:24-26), while God’s servants worship and see his face in the city (Rev. 22:3-4). Second, the nations are entitled to the leaves of the tree of life, which are for their healing (Rev. 22:2), whilst presumably God’s servants derive benefit from the fruit of the tree. The “marginalized” status of the nations in the New Jerusalem, in comparison with God’s servants who take center stage in the New Jerusalem, is related to their predominantly negative image before the introduction of the city (Rev. 11:18; 19:15; 20:3, 8), on the one hand, and to the tension of Jewish apocalyptic tradition regarding the eschatological fate of the Gentiles between Gentile subservience to Israel and Gentile full participation in eschatological salvation, on the other hand. Thereby John hardly treats the nations once complicit with Babylon and its oppressed on exactly the same footing, probably in reflection of apocalyptic justice.

Clinical Significance of the Pattern of Lymph Node Metastasis Depending on the Location of Gastric Cancer

Han, Ki-Bin,Jang, You-Jin,Kim, Jong-Han,Park, Sung-Soo,Park, Seong-Heum,Kim, Seung-Joo,Mok, Young-Jae,Kim, Chong-Suk The Korean Gastric Cancer Association 2011 Journal of gastric cancer Vol.11 No.2

Purpose: When performing a laparoscopic assisted gastrectomy, a function-preserving gastrectomy is performed depending on the location of the primary gastric cancer. This study examined the incidence of lymph node metastasis by the lymph node station number by tumor location to determine the optimal extent of the lymph node dissection. Materials and Methods: The subjects consisted of 1,510 patients diagnosed with gastric cancer who underwent a gastrectomy between 1996 and 2005. The patients were divided into three groups: upper, middle and lower third, depending on the location of the primary tumor. The lymph node metastasis patterns were analyzed in the total and early gastric cancer patients. Results: In all patients, lymph node station numbers 1, 2, 3, 7, 10 and 11 metastases were dominant in the cancer originating in the upper third, whereas station numbers 4, 5, 6 and 8 were dominant in the lower third. In early gastric cancer patients, the station number of lymph nodes with a metastasis did not show a significant difference in stage pT1a disease. On the other hand, a metastasis in lymph node station number 6 was dominant in stage pT1b disease that originated in the lower third of the stomach. Conclusions: When performing a laparoscopic-assisted gastrectomy for early gastric cancer, a limited lymphadenectomy is considered adequate during a function-preserving gastrectomy in mucosal (T1a) cancer. On the other hand, for submucosal (T1b) cancer, a number 6 node dissection should be performed when performing a pylorus preserving gastrectomy.

감성 평가척도에 의한 공간 환경의 실증분석에 관한 연구

한명흠(Han, Myoung-Heum),오인욱(Oh, In-Wook) 한국실내디자인학회 2010 한국실내디자인학회논문집 Vol.19 No.6

The purposes of this study are to present the criteria for a sensibility rating scale for measuring the general public"s perception of museums’ spatial environment, particularly lobby space, through an empirical analysis; and to clarify the characteristics of the presented rating scale in terms of each rating element and factor. For this study, a survey was conducted during September 11-17, 2010, and a total of 370 museum visitors participated in the survey. A sensibility rating scale used for the survey consisted of a total of 32 adjectives selected from a literature review of previous studies. To specify the dimensions of semantic space using the semantic adjectives, words with opposite meanings were analyzed with the semantic differential technique developed by Osgood et al, Using SPSS, a reliability analysis, factor analysis, and cluster analysis were conducted on the data obtained from the survey. The results of this study can be summarized as follows: According to the general public’s perception of museum lobbies, five factors were found from the 19 semantic ratings of the Gyeonggido Museum of Modern Art and the 20 semantic ratings of the Seoul Museum of Art, respectively. In the case of Gyeonggido Museum of Modern Art, three additional semantic words of ‘orderly’, ‘open’, and ‘original’, which did not appear in the case of Seoul Museum of Art, were discovered. In the case of Seoul Museum of Art, more detailed semantic words such as ‘restrained’, ‘ordinary’, ‘concrete’, and ‘intellectual (rational)’ were obtained. Five semantic elements, which describe the two museums, were: Feelings of ‘pleasantness’, ‘value’, ‘usage’, ‘aesthetics’, and ‘materials’. According to a comparative analysis of the two lobby spaces in terms of semantic rating elements, Gyeonggido Museum of Modern Art was perceived to be an orderly, original, open, soft, and female-like space, whereas Seoul Museum of Art was perceived to be aesthetic, restrained, concrete, realistic, intellectual and rational. In the coming years, the results of this study will serve as valuable data for constructing a sensibility rating scale for evaluating spatial environments of museums.

공간 환경에 대한 감성평가와 실증분석에 관한 연구

한명흠(Han, Myoung-Heum),오인욱(Oh, In-Wook) 한국실내디자인학회 2010 한국실내디자인학회논문집 Vol.19 No.5

The purposes of this study are to investigate the dimensions of the sensibility towards a spatial environment perceived by the general public and to present the characteristics of various spaces through empirical analyses. A set of words are selected to describe visitors’ perception of a spatial environment based on previous studies, and then they are arranged according to the degree of understanding and suitability. The results of the survey on the sensibility measurement can be summarized as follows: Factor analyses and cluster analyses are conducted on the indicators measuring the general public’s perception of the exhibition hall of the Deoksugung Museum, and the following five dimensions are obtained: spatial value, spatial aesthetic, spatial affinity, spatial freshness, and spatial materials. The satisfaction level of visitors regarding the space of the exhibition hall under study is also investigated. A regression analysis is conducted to find a relationship between the satisfaction level of visitors (DV) and the five dimensions (IVs), and the analysis shows that there is a significant relationship. Among the five factors, the ‘Spacial Value’ and ‘Spacial Affinity’ are found to significantly affect visitors’ satisfaction. The results of this empirical study show that visitors’ affinity towards the exhibition hall of the Deoksugung Art Museum along with the surrounding garden, as well as visitors’ appreciation of the social, historical, and cultural value of Deoksugung Palace, are found to greatly affect visitors’ overall satisfaction with the spatial environment of the museum.

천년왕국에 들어가는 이들은 누구인가? -요한계시록 20장 4절의 번역을 중심으로-

한철흠(Han, Chul-Heum) 한국침례신학대학교 출판부 2024 복음과 실천 Vol.71 No.1

닭의난초(Epipactis thunbergii)에 공생하는 난 균근균의 분리 및 동정

한한결 ( Han Kyeol Han ),정재민 ( Jae Min Chung ),조용찬 ( Yong Chan Cho ),김대신 ( Dae Shin Kim ),엄안흠 ( Ahn Heum Eom ) 한국균학회 2013 韓國菌學會誌 Vol.41 No.1

In this study, roots of Epipactis thunbergii were collected from Chujado on the north of Jeju-do. Six fungal isolates were isolated from surface-sterilized roots of the orchid and classified with groups based on morphological characteristics. Fungal DNA was extracted from each isolate and amplified ITS region using ITS1-OF/ITS4-OF primer pair. Three species of orchid mycorrhizal fungi were identified as Tulasnella calospora, Tulasnella sp. and Sebacina sp. based on molecular and morphological characteristics.