고속가공에서 2중 신경망을 이용한 표면거칠기 예측과 가공DB 구축 효율화 방안

원종률,남성호,유송민,이석우,최헌종 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

In this paper, a double artificial neural network (ANN) approach and the efficient machining database building scheme are presented for the prediction of surface roughness in high-speed machining. In this approach, 4 machining parameters and used for the prediction of cutting force components, and the combinations of 4 parameters and the predicted cutting force components are finally used for the prediction of surface roughness. The experimental results comparing the these results with the predicted values using simple 4 input nodes have been also investigated to verify the effectiveness of the proposed approach.

^(131)I 전신스캔 음성 재발 분화 갑상선암에서 EDG PET의 임상적 의의 : ^(99m)Tc-MIBi Scintigraphy와 비교분석

원종철,이성진,이태윤,남궁일성,이시열,김하영,한정희,류진숙,문대혁,안일민 대한내분비학회 2001 Endocrinology and metabolism Vol.16 No.4-5

정상인과 정신지체인의 치아우식증과 치아우식 원인균, 타액내 면역항체의 비교

최세원,양규호,최남기,강미선,임회순,오종석,김선미 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.3

영남지역 납석 광상에 수반된 다이야스포아의 특성

정원우,상기남,이윤종 경북대학교 과학교육연구소 1996 科學敎育硏究誌 Vol.20 No.-

Mineralogy of diaspor in a pyrophyllite deposit in the Youngnam area has been studied by the methods of field investigation and laboratory works. Samll nodules of diaspore are present in a pyrophyllite deposit at Tongnae-Yangsan and Miryang area. Pyrophyllite-kaolin in this zone is accompanied by sericite, diaspore, mixed-layer mica/smectite, alunite, dumortierite and silica minerals. The pyrophyllite forms a lens-like body in a northerly-trending belt of rhyolitic flows and pyroclastic rock near the intrusion of granite rock of Bulkusa Series. The diaspore nodules occurring sporadically throughout the deposit contain platy diaspore and interstitial pyrophyllits. The nodules range in size from 1 ㎝ to 10 ㎝. Microprobe analyses, opitical data and unit-cell dimensions of the diaspore and pyrophyllite are given. Alteration of the original rhyolitic welded tuff exists along shear zones acting as channels for acid sulutions derived from Late Creataceous pluton. The formation of the pyrophyllite lenses involved outward migration of silica and alkalies, leaving behind less mobile alumina; short-range trasport of aluminum in solution is indicated by the diaspore nodules. by rate thin veins containing platy pyrophyllite, and by veins of massive pyrophyllits cutting silicified rhyolitic welded tuff at the termination of some shear zones. Published experimental work shows that the pyrophyllitization may have taken place within the temperature range of 350-370℃ under a pressure of 1 kbar or less. zones. Published experimental work shows that the pyrophyllitization may have taken place within the temperature range of 350-370℃ under a pressure of 1 kbar or less.

완전 고환성 여성화 증후군 1례

이원주,김택훈,권경익,김종인,조남규,박세출 啓明大學校 醫科大學 1993 계명의대학술지 Vol.12 No.2

저자들은 외형상 여성으로써 원발성 무월경과 양측 외음부 종양 촉지를 주소로 입원한 complete testicular feminization syncrome 1례를 경험하였기에 이를 문헌고찰과 함께 보고하는 바이다 The 46, XY individual with complete testicular feminization syndrome is a phenotypic female who is usually somewhat tall, has excellent breast development and presents to the gynecologist because of primary amenorrhea and an inguinal mass. In complete testicular feminization syndrome, axillary and pubic hair are sparse or absent and some degree of virilization such as clitorial hypertrophy, partial labioscrotal fusion and hirsutism doesn't occur at puberty. We report a case of complete testicular feminization syndrome with the brief review of literatures.

RF 스퍼터링법에 의한 SCT박막의 전기적 특성

김원종,정의남,심상흥,박하용 三陟大學校 2001 論文集 Vol.34 No.1

In this study, The (Sr1-xCax)TiO3(SCT) thin films are deposited on Pt-coated electrode (Pt/TiN/SiO2/Si) using RF magnetron sputtering method with substitutional contents of Ca at various substrate temperature. The structural properties of SCT thin films are analyzed using SEM, XRD, and EDS, and the electrical properties are studied by measuring the dielectric properties and the electrical properties are studied by measuring the dielectric properties and electrical conduction. The experimental results of electrical properties are summarized as follow. The dielectric constant is increased with increasing the substitutional contents of Ca, while it is decreased if the substitutional contents Ca exceeded over 15[mol%]. The maximum dielectric constant of thin film is obtained by annealing at 600[℃]. The dielectric constant changes almost linearly in temperature ranges of -80~+90[℃]. The temperature properties of the dielectric loss have a stable value within 0.1 independent of the substitutional contents of Ca. The capacitance characteristics had a stable value within ±5[℃]. The drastic decrease of dielectric constant and increase of dielectric loss in SCT thin films is observed above 200[㎑]. All SCT thin films used in this study show the phenomena of dielectric relaxation with the increase of the increase of frequency. Ⅴ-Ⅰ characteristics of SCT thin films show the increasing leakage current with the increases of deposition temperature.

단일 인접면을 갖는 성층화된 유체에서의 이중확산유동

이종문,홍남호,이동원,현명택 濟州大學校 産業技術硏究所 1995 산업기술연구소논문집 Vol.6 No.-

A two-layer, solutally-stratified system with a single interface in a square rectangle is simulated. As noted in previous studies, a unicell flow pattern appears in case of relatively lower buoyancy ratio, while global fluid motion does as layered flow pattern with two convective layers. The averaged Nusselt number develops as the same tendency with pure natural convection and convective effect retards as buoyancy ratio increases. There is no effect with Lewis number, but for the convective effect is much more delayed in Le=lO than in Le=100 and 300.

Letrozole에 반응을 보인 다발성 폐전이를 동반한 저도 자궁내막 기저육종 1례

이남수,원종호,박희숙 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Low-grade endometrial stromal sarcoma is generally an indolent tumor rich in estrogen and progesterone receptors. Objective responses to hormonal therapy, most commonly with megestrol acetate, have been reported. The patient is a 50-year-old woman who presented with low-grade endometrial stromal sarcoma confined to the vagina in 1992 and was treated with local excision. Approximately 4 years later, the patient had recurrent right ovarian and ileal mass treated with right oophorectomy and segmental resection of ileum. In 2002, multiple lung metastatic lesions were discovered and treated with megestrol acetate. But megestrol acetate showed no response during the period. Letrozole was then given at a daily dose of 2.5 ㎎ with partial response for a duration of 10 months. Letrozole at a daily dose of 2.5 ㎎ may be effective in low-grade endometrial stromal sarcoma.

자동차 배기관의 비접촉 진동 측정

이종남,장강원,이신영 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-

In this work, the vibration of an automobile exhaust system is measured by using a recently-developed magnetic sensor. The magnetic sensor is composed of a solenoid and two pairs of permanent magnets generating an antisymmetric magnetic field in the lateral direction inside the solenoid. Lateral movement of a ferromagnetic pipe inside the magnetic field of the suggested sensor induces an electromotive force in the solenoid corresponding to the lateral velocity of the pipe. Due to the simplicity and non-contact characteristics of the magnetic sensor, dynamic behaviors of the structures operating under high temperature such as an exhaust pipe can be efficiently observed. It is shown that the lateral vibration of the exhaust system can be successfully measured by the suggested sensors. The Campbell diagram of the exhaust system is plotted to examine the vibration characteristics of the exhaust system.

유두체-시상로의 신경종말에 관한 연구

양남길,심동원,김종규,안의태 순천향대학교 1985 논문집 Vol.8 No.1

This experiment was performed to define the ultrastructural character of axon terminal of mammillothalamic tract. The rats weighing 250∼300 gm were stereotaxically lesioned in the mammillary body. 2,7 and 14 days following the lesion, animals were sacrificed and perfused with 1% glutaraldehyde-1% paraformaldehyde solution(pH 7.2∼7.4), and anterior thalamic nuclei were punched out from the successfully lesioned brain. Tissue punchings were fixed in the same fixative as perfusion liquid overnight, immersed in the 2% osmic acid (pH 7.2∼7.4), dehydrated through alhcohol series, and embedded in the Araldite mixture. Degenerated axon terminals within the anterior thalamic nucleus following the mammillary lesion show two kinds of patterns, i,e., dark degeneration and lucent degeneration. Boutons of both types were asymmetrically synapsed with dendritic spine. Some boutons were synapsed directly with dendritic body, but from the correlative serial readings they showed the impression that they were originally synapsed with the spine. The result was contrasted with the former report that the synaptic type was defined as axo-dendritic one. The evidence suggests that axon-terminals of mammillothalamic tract make asymmetric axo-spinous synapses within anterior thalamic nucleus.