• Imaging Science in Dentistry
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• 제40권4호
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• pp.155-158
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• 2010

Digital radiographic systems allow the implementation of a fully digital picture archiving and communication system (PACS), and provide the greater dynamic range of digital detectors with possible reduction of X-ray exposure to the patient. This article reviewed the basic physical principles of digital radiographic imaging system in dental clinics generally. Digital radiography can be divided into computed radiography (CR) and direct radiography (DR). CR systems acquire digital images using phosphor storage plates (PSP) with a separate image readout process. On the other hand, DR systems convert X-rays into electrical charges by means of a direct readout process. DR systems can be further divided into direct and indirect conversion systems depending on the type of X-ray conversion. While a direct conversion requires a photoconductor that converts X-ray photons into electrical charges directly, in an indirect conversion, lightsensitive sensors such as CCD or a flat-panel detector convert visible light, proportional to the incident X-ray energy by a scintillator, into electrical charges. Indirect conversion sensors using CCD or CMOS without lens-coupling are used in intraoral radiography. CR system using PSP is mainly used in extraoral radiographic system and a linear array CCD or CR sensors, in panoramic system. Currently, the digital radiographic system is an important subject in the dental field. Most studies reported that no significant difference in diagnostic performance was found between the digital and conventional systems. To accept advances in technology and utilize benefits provided by the systems, the continuous feedback between doctors and manufacturers is essential.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2000년도 제7차 국제 심포지움(생약자원개발에 관한연구) 및 추계정기 학술발표회 초록집
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• pp.11-13
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• 2000

Cancer is a general term subjected to a series of malignant tumor diseases which may affect many different parts of the human body. These cancer diseases are characterized by a rapid and uncontrolled formation of abnormal cells in the body. Cancer chemotherapeutic agents can often provide the prolongation of life and occasionally cures. To date many kinds of compounds have been obtained from plants kingdom as anti-neoplastic and anti-cancerous agents. However, there is no special type of compounds for cancer therapy. In our laboratory, anti-tumor and cytotoxic screenings on higher plants collected in Japan, China, Korea, Southeast Asia and South America have been done by using Sarcoma 180 ascites in mice, P388 lymphocytic leukemia in mice, Chinese hamster lung V-79 cells, P388 cells and nasopharynx carcinoma (KB) cells. The family, Simaroubaceae consists of about 20 genera and 120 species, mainly shrubs and trees, distributed in tropical and subtropical country. Simaroubaceae IS classified as RUTALES, together with Rutaceae, Burseraceae, Meliaceae, Malpighiaceae and Polygalaceae. The members differ from the Rutaceae in not containing oil glands. Bitter principles are a characteristic of the family, Simaroubaceae. The genera include Quassia (Simarouba) (40 spp.), Picrasma (Aeschrion) (6 spp.), Brucea (10 spp.), Soulamea (10 spp.), Ailanthus (10 spp.) and Perriera (1 spp.) etc.. Surinam quassia derived from Quassia amara growing in Guianas, north Brazil and Venezuela is used in traditional medicines for stomachic, anti-amoebic, anti-malarial and anti-anaemic properties. Also, various parts of a number of plants of the family Simaroubaceae have been used in traditional medicine for the treatment of a variety of diseases including cancer, amoebic, dysentery and malaria. Then, the research has established that it is the quassinoid content of these plants that is responsible for above activities. In this meeting, I will present on anti-tumor and anti-malarial activities and their active principles of Simaroubaceae plants, Eurycoma longifolia, Ailanthus vilmoriniana, Simaba cedron and Brucea mollis which have been studied in our laboratory.

• 동서간호학연구지
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• 제5권1호
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• pp.114-119
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• 2000

This paper reviews the curriculums on the nursing in oriental medicine currently provided by Korean nursing education institutes. As of October 2000, 14 of 48 four-year-system and 40 of 65 three-years system nursing schools provide the various academic courses and programs titled with the nursing care in oriental medicine. Depending on schools, the credit assigned to these courses and programs vary widely ranged from 1 to 8 units. Even in some schools the courses are offered not as a regular credit course but as a part of other courses on time sharing base. It is absolutely insufficient efforts in promoting education on the nursing in oriental medicine. The oriental medicine is basically based on the principles that the most critical factor in promoting health and preventing disease is the process for improving the condition of both physical and mental part of patients. In this context it seems to be an valuable attempt to apply the principles of oriental medicine to the field of nursing care, and to develop the new methods. It is because promoting health, preventing disease, recovering health, alleviating pains are the basic responsibilities of nursing care. The national health policies have been increasingly emphasizing low-cost and high-efficiency just as in economic policies. In terms of cost-effectiveness nursing education in oriental medicine seems to be evaluated as good enough to satisfy these efficiency requirements. As a initial step for promoting and specializing the nursing education in oriental medicine it is absolutely needed to introduce and expand the curriculum on this new field. Increasing concerns about the oriental medicine as the third medical care is the world wide phenomenon now. Considering this trend, current insufficient curriculum on nursing in oriental medicine in education institutes, especially in four-year system nursing school, might be an undesirable phenomenon for future development of nursing education in Korea. In-depth studies about this issue are seriously needed.

• 사상체질의학회지
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• 제18권1호
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• pp.30-40
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• 2006

1. Objectives The present study purposed to examine the contents and the principles of music therapy according to Oriental medicine theories in order to prove that music therapy is not a new research area but its principle is found in the long tradition of Oriental medicine. 2. Methods We investigate the possibility of music therapy based on Oriental medicine theories and examine the meanings of music therapy from the viewpoint of Oriental medicine. 3. Conclusions and discussions (1) The principles of music therapy are the principle of homogeneity, catharsis and balance. (2) When one’s mind changes, there are naturally occurred sounds, which are called Oseong (五聲: the oriental five voices exhalation, laughing, singing, wailing and groaning), and the notes defined by arranging the Oseong according to the principle of Ohaeng (五行: the oriental five phases wood, fire, earth, metal, water) are Oheum (五音: the oriental five musical notes Gakeum, Chieum, Gungeum, Sangeum and Wooeum.). If Eum (musical notes) is classified into Ohaeng, it can be divided into Gakeum, Chieum, Gungeum, Sangeum and Wooeum. (3) Change of Sinji (神志: consciousness) induces change of Gigi (氣機: function of Gi), which can change the character of voices. Oseong controls the functions of Ojang (五臟: the oriental five viscera) by ruling one’s Jeongji (情志: emotion). It can reduce the damage of the viscera caused by excessive vent of emotion resulted from unconscious expression of Oseong - Hoseong (呼聲: exhalation), Soseong (笑聲: laughing), Gaseong (歌聲: singing), Gokseong (哭聲: wailing) and Sinseong (呻聲: groaning). (4) Yijeongseungjeong (以情勝情: Control emotion with emotion) therapies, which suppresses an emotion by stimulating another, include Noseungsabeop (怒勝思法: Control anxiety with anger), Heeseungbibeop (喜勝悲法: Control sorrow with joyfulness), (思勝恐法: Control fear with anxiety), Biseungnobeop (悲勝愁法: Control anger with sorrow) and Gongseungheebeop (恐勝喜法: Control joyfulness with fear). (5) Seongeum (聲音: voices and musical notes) can be applied to a stimulation method that not only harmonizes the rhythm of living organs but also controls the occurrence of diseases caused by mutual Pyeonseongpyeonsoi (偏盛偏衰: relative preponderance and weakness) through direct induction of the strength and weakness of Gi function of the oriental five viscera in a human body according to the individual character. Sounds preferred by the patient, the material of an instrument selected by the patient, the character of rhythm and music expressed by the patient and the sound or voice uttered frequently by the patient can be considered in diagnosis and treatments for the patient’s body and mind.

• 문화기술의 융합
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• 제6권4호
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• pp.9-14
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• 2020

이 연구에서는 장애학생을 위해 개발된 통합교육 과학과 자료 e-book이 보편적 학습설계 측면에서 적합하게 구현되었는지 살펴보았다. 분석을 위해 2015 개정 교육과정 초등학교 과학과 3~6학년까지 일반 교과서 내용을 학습하기 어려운 장애학생을 위해 교수 적합화(adaptation)한 국가 수준 자료인 「장애학생 통합교육 교수-학습 자료: 과학과」를 선정하였다. 과학과 3~6학년 영역은 기초과학탐구, 물질, 생명, 운동과 에너지, 지구와 우주로 총 40개 단원으로 구성되어 있다. 내용분석기준은 CAST(2018)에서 제시된 UDL 3개 원칙에 따른 9개 항목의 세부항목을 기준으로 하였다. 연구결과 통합교육 과학과 e-book은 UDL 원칙 중 전략적 네트워크가 가장 많았으며, 운동과 에너지 영역에서 가장 많이 나타났다. UDL 원칙별로 살펴보면, 인지적 네트워크는 학습자에 맞는 정보제시 구현, 전략적 네트워크는 자료탐색 방식 다양화 등(4.1~5.2/6.3), 정서적 네트워크는 난이도를 최적화한 다양한 자료제시가 가장 많이 나타났다.

• 인터넷정보학회논문지
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• 제23권3호
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• pp.111-123
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• 2022

지능정보화 사회에서 가장 핵심으로 발전하고 있는 인공지능은 인간에게 편의성과 긍정적인 삶의 변화를 가져오고 있다. 하지만 인공지능 발전과 함께 인간의 인격권과 재산이 위협받고, 윤리적인 문제가 발생하는 사례도 증가하고 있기 때문에 그에 따른 대안이 필요하다. 본 연구에서는 인공지능의 역기능에서 가장 쟁점화되고 있는 인공지능 윤리(Artificial Intelligence Ethics) 문제를 인공지능 윤리원칙과 구성요소 기반 하에 우선적으로 인간의 인격권과 재산을 보호할 수 있도록 인공지능 윤리 측정지표를 연구, 개발하는 데 목표를 두었다. 인공지능 윤리 측정지표를 연구, 개발하기 위해 다양한 관련 문헌과 전문가 심층 면접(FGI), 델파이 설문조사를 실시하여 43개 항목의 윤리 측정지표를 도출하였다. 설문조사와 통계분석에 의하여 윤리 측정지표에 대한 기술통계량 분석, 신뢰도 분석, 상관관계 분석으로 40개 항목의 인공지능 윤리 측정지표를 확정하여 제안하였다. 제안된 인공지능 윤리 측정지표는 인공지능 설계, 개발, 교육, 인증, 운영, 표준화 등에 활용될 수 있으며, 안전하고 신뢰할 수 있는 인공지능 발전에 기여할 수 있을 것이다.

• The Korean Journal of Ceramics
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• 제2권4호
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• pp.216-220
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• 1996

In the present paper, a new type of DC arc plasma torch is disclosed. The principles of the new magnetic and fluid dynamic controlled large orifice long discharge tunnel plasma torch is discussed. Two series of DC Plasma Jet diamond film deposition equipment have been developed. The 20kW Jet equipped with a $\Phi$70 mm orifice torch is capable of deposition diamond films at a growth rate as high as 40$\mu\textrm{m}$/h over a substrate area of $\Phi$65 mm. The 100kW high power Jet which is newly developed based on the experience of the low power model is equipped with a $\Phi$120 mm orifice torch, and is capable of depositing diamond films over a substrate area of $\Phi$110 mm at growth rate as high as 40 $\mu\textrm{m}$/h, and can be operated at gas recycling mode, which allows 95% of the gases be recycled. It is demonstrated that the new type DC plasma torch can be easily scaled up to even higher power Jet. It is estimated that even by the 100kW Jet, the cost for tool grade diamond films can be as low as less than ＄4/carat.

• 한국안전학회지
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• 제32권4호
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• pp.40-45
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• 2017

Among various methods to build the construction safety, the consecutive improvement by the measuring and evaluating safety management capabilities for the construction participants such as an owner, a contractor, and a supervisor (construction project manager) can be the effective one. Thus, an effective evaluation and grading criteria to provide performance index for the implementation of safety management activities should be necessary. In this regards, the purpose of this study is to verify the adequacy by offering a competency evaluation system for the supervisor's safety capability and by applying the system to some construction sites. The proposed evaluation system was developed on the basis of the principles of safety management & accident prevention, basic elements of safety and health management system, and safety evaluation cases at home and abroad. The trial evaluation showed that the safety management of the construction site is mainly carried out by the contractor and the supervisor's awareness for the safety management is low on the whole. Especially, it is urgent to improve the support system from the supervisor headquarter and to place the dedicated safety management person in the field.

• 한국인터넷방송통신학회논문지
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• 제16권5호
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• pp.185-190
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• 2016

국내 발전소에서 운전 중인 XLPE 케이블(또는 CV케이블)은 많은 경우 포설된 지 40년에 이르고 있다. 설치 후 운전 상태에 있는 대부분의 CV 케이블은 6~8년의 기간이 경과하면 열화가 발생하기 시작하고, 근래에 포설한 케이블이라 할지라도 사고가 발생할 수가 있으며, 사고 발생으로 인하여 막대한 손실을 초래하게 된다. 사고를 미연에 방지하기 위하여 케이블의 동작상태를 정기적으로 감시 확인하여야 한다. 우리는 케이블의 사고를 체계적으로 감시 및 예방하기 위한 목적으로 측정 시스템을 개발하였다. 이 장비는 수 년 동안 충남 태안에 소재한 한국서부발전주식회사(Korean Western Power Co. Ltd.)에서 케이블의 동작 상태를 감시하고 있다. 이 논문에서 시스템의 기능 및 동작 원리를 소개하고, 터빈 발전기 부하용 XLPE 고압케이블의 절연층 절연상태와 습도의 상간관계를 제시한다.

• Archives of Plastic Surgery
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• 제40권3호
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• pp.238-243
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• 2013

Background Primary malignant tumors of the hand, although unusual, may present varied and often complex clinical problems. The main treatment modality of skin cancer of the hand has changed. Methods We retrospectively reviewed the medical records of 43 patients who underwent surgery for malignant skin tumors of the hand during an 18-year period, from September 1994 to February 2012. The characteristics of the tumor, methods of reconstruction, and long-term results were reviewed. Results We had 43 patients with 27 melanomas, 14 squamous cell carcinomas, and 2 sarcomas. Their ages ranged from 19 to 74 years (mean, $53.4{\pm}14.5$ years), from 46 to 79 years (mean, $59.7{\pm}9.6$ years), and from 15 to 43 years (mean, $29{\pm}19.8$ years), respectively. Thirty-four cases occurred on the fingertip (16 of those cases on the thumb), 5 cases occurred on the palm, and 4 cases on the dorsum of the hand. Amputation was most frequently used in early cases, but recently, tissue-sparing excision has been performed frequently. The incidence of local recurrence was 3 cases and distant metastasis was 1 case, and the 5-year survival rate was 100%, except in 4 cases due to follow-up loss. Conclusions The principles of treatment-to be curative and to preserve function and appearance-are important points. "Preservative surgery" preserves function and cosmesis of the involved finger or hand dorsum or palm. Preservative surgery not only emphasizes less resection and surgery of a smaller scale, but also optimal reconstruction of the soft tissue defect of the digit.