Grinder와 Oscilloscope를 利用한 機械材料의 識別에 關한 硏究(Ⅰ)

柳炳哲 군산대학교 1968 群山水産專門大學 硏究報告 Vol.2 No.1

In order to operate a machine without delay or to handle easily its component parts when it requires the urgency of repair, we are necessary enough to be able to descriminate what are the materials of it. Until at present, we have made use of a microphotograph to discern a thing from another. Here the other two methods are given as follows besides the above. 1. Using a grinder; When a part of machines is ground by the tachometer having a circular velocity 29,4m/sec, the flame has d variety of color, thick and thin, density etc. 2, Using an oscilloscope : After the various types of wave which sounds through the grinding are recorded the photographs of them are obtained by the oscilloscope. Then each sound wave which has a difference is figure out. Now grinder and oscilloscope both do lots of important work to distinguish some materials of a machine. In the future if we should collect many kinks of the machine ports and have a continuous observation, we could recognize the relations between carbon content and flame or sound wave.

LAN 환경하에서 효율적인 원격강의 시스템의 설계 및 구현

유종훈,이병수 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.4 No.2

In this thesis. we present a multimedia tele-lecturing system that supports a real-time bidirectional learing through the computer networks. The proposed system, which is a multimedia tele-lecturing system based on a model of real classroom, consists of the multimedia authoring tool, the BBS system and the remote lecture system. A instructor can build conveniently educational materials such as examination papers by using the authoring tool, Through the BBS, learners can communicate the questions and answers with their instructor. The remote lecture system provides an environment in which the instructor and learners can navigate the courseware prepared for the lecture. This ability can be carried out though the real-time video conferencing, the shared workspace and the monitoring tools. In this thesis, we fist analyze the functional requirements, and then describe the design specification and the implementation details of the system.

관골 골절에 따른 합병증에 관한 임상적 연구

유준영,양병은,송상훈,엄기훈 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4

The nasal and zygoma bone are parts of frequently fracturing of facial bones because of anatomically protrusion. Of facial bone fractures, nasal bone is at the high level of incidence rate. But zygoma fracture that anatomical characteristics increase the incidence rate also is occupied considerable part of the facial bone fracture. The outline of face is decided by form of underlying skeletal structure, of that, zygoma plays an important role in. Zygoma is closely attached to surrounding anatomic structure as orbit, maxillary sinus. Aesthetic and functional disturbance are developed by zygoma fracture from trauma, complications, as facial asymmetry, trismus, sensory disturbance, epistaxis, periorbital hemorrhage, diplopia etc, are developed. The patterns of complications following displacement of fractured fragment of zygoma by trauma are slightly different.

학생 자기평가를 적용한 교직과목 강의에 대한 자기연구

유병규 부산대학교 과학교육연구소 2013 교사교육연구 Vol.52 No.1

이 연구는 2012년 1학기에 강의한 한 교직과목에서 학습성찰일기라는 자기평가 방법을 활용한 나의 수업을 자기연구방법으로 탐구한 것이다. 자기평가 방법은 최근 전통적 평가에 대한 한계를 지적하면서 제기되고 있는 대안적 평가의 한 방법으로 학생 스스로가 자신의 학습 태도부터 과정, 결과까지 평가하는 방법을 말한다. 이러한 자기 평가 방법이 수업에서 어떤 의미를 가지고 있는지 교수자와 학생의 차원으로 분석하는 것이 이 연구의 목적이다. 이를 위해 2012학년도 1학기 본 연구자가 담당했던 교직과목을 대상으로 학습성찰일기라는 자기평가 방법을 활용한 수업을 자기연구방법으로 탐구하였다. 그 결과는 다음과 같다. 우선 교수자에게 자기평가는 첫째, 학생들과 소통하며 함께 만들어가는 수업의 과정이고, 둘째, 학생에 대한 정보제공자이며, 셋째, 가르치는 내용과 교수활동의 일치를 위한 과정이다. 또한 학생들에게 자기평가는 첫째,적극적인 학습태도로의 변화 과정이고, 둘째, 일종의 복습 과정이며, 셋째, 교사가 되면 활용할 미래의 교수전략의 의미를 가진다. This paper explores my teaching experience of instruction utilizing reflection journals as a self-assessment through self-study in Spring Semester in 2012. Self-assessment is an alternative assessment method resolving limitations of the traditional assessment method. Students themselves assess their learning attitudes, processes and results. The purpose of this study is to analyze what self-assessment means in a teaching profession course in light of teacher and students’ perspectives. As a teacher educator-researcher, I inquired my own instruction through self-study. The results are as follows: For teachers self-assessment offers lessons communicating with students, information providers about students, and agreement in both teaching contents and activities. For students, self-assessment provides active learning attitudes, review process, and future teaching strategies as pre-service teachers.

計量意思決定論의 本質에 관한 硏究

兪炳辰 명지대학교 1978 明大論文集 Vol.11 No.-

공공의 이익을 위한 특허발명의 강제실시 : 의약발명을 중심으로

유병선,백상기 충남대학교 생물공학연구소 2005 생물공학연구지 Vol.11 No.1

This study focuses on the establishment of compulsory license to the patented invention, particularly pharmaceutic patent for public interests. With a view to promoting the development of technology and industry, Patents Act grants patentees an exclusive right to exploit the patented invention. For the purpose of the same goal, on the other hand, Patents Act imposes a few limits upon the exclusive right of patentees. A compulsory license is one of the limits upon patent right. A compulsory license is not an exceptional management from outside, it already exists in the inside of the right in view of the fact that Patent is the right granted artificially to contribute to the development of the industry. Pharmaceutic patent is closely related to human life directly or indirectly. Accordingly it has been discussed internationally to establish compulsory license to pharmaceutic patent for public interests. Regarding this problem, advanced countries and undeveloped countries are at issue with each other. We examine our position about compulsory license to pharmaceutic patent considering the degree of industrial development, especially the reality of pharmaceutic industry where Multinational Corporation of foreign country produces the most medicine. In case of Korea, there is a necessity for compulsory license in wide ranges in comparison with advanced countries such as Canada, Britain, Germany, France and so on within the limits of Agreement on TRIPs. In view of the above statements, it raises several problems of compulsory license under the Patent Act of Korea and proposes their solution. First of all there needs the realistic interpretation of the requirements for public interests and the flexible viewpoint about compulsory license to pharmaceutic patent. It is finally submitted that statutory provisions on compulsory license are designed as an efficient means of promoting goals of the Patents Acts and, also, that terms, conditions and procedures for compulsory license will have to be amended to make a better balance between the interests of patentees and public interest.

박강판(薄鋼板)의 Gas용접에서 일어나는 용접단(溶接端)의 간격에 대한 고찰(Ⅲ) : 1.2mm강판의 Butt용접에 대하여

유병철 군산대학교 1976 群山水産專門大學 硏究報告 Vol.10 No.2

In making a gas welding of a light sheet-sheel, various deformations are taken place, and among them a few ways of a welding practice such as Backward, Symmetrical, and Jumping types have been utilized with a view to prevent the revolving strain. Hut these ways increase both the welding stress and the amount of work, and accordingly decrease the welding efficiency. Continued on the last study on the effective ways of a welding practice making a reverse use of the revolving strain by measuring the length of interval between the other ends of two sheets suitable to the butt welding of a light sheet-steel in thickeness of 1mm published in 1969, this thesis contains a study on the length of interval between the other ends of two sheets which have thickeness of 1.2mm. When we set 15cm/min at the weld speed, tip size 50 in a welding torch, the pressure of oxygen 2kg/㎠, and the diameter 3mm of a welding rod, the length of interval between the other ends of light sheets are shortened in 1mm when the thickeness of light sheet-steel is thickened in 1.2mm as a results of this experiment. And when we formularize these, the results are as follows; 1. 5cm to 15cm width sheets

TPA로 야기된 HL-60 세포의 기질부착에 대한 Asadisulphide의 억제효과

유관희,박미아,김선희,안병준 대한의생명과학회 2000 Journal of biomedical laboratory sciences Vol.6 No.3

항암제로 사용되어 온 아위를 사용하여 극성에 따른 용매추출 분획을 얻고 TPA로 처리된 HL-60 세포를 사용하여 기질부착 억제실험을 수행한 결과, ethyl acetate (EA)층에서 가장 강한 부착억제효과가 있음을 알아 내었기에 ethyl acetate (EA)층을 다시 ethyl acetate (EA), hexane(HEX), ethyl ether (EE)로 추출한 뒤 3회 chromatography하여 아위 순수활성물질인 asadisulphide를 분리해 내었다. 이 순수활성물질을 가지고 HL-60 암세포에 대한 부착 억제실험을 수행한 결과 asadisulphide는 최소농도 2 ㎍/ml에서 HL-60 세포의 부착을 98%억제하였다. 또한 assdisulphide는 HL-60 세포에 대해 ED50값은 2.6 ㎍/ml이었으며, 20 ㎍/ml 농도 이하에서 세포독성이 없고 항암효과가 있다는 사실을 규명하였다. Asadisulphide were purified from Ferrula assafoetida by organic solvent extraction and chromatography. Its inhibitory effects on the TPA-induced adherence of HL-60 cells was analyzed. Since ethyl acetate extracts of F. assafoetida has the strongest inhibitory effect on adherence of HL-60 cells, it was reextracted with ethyl acetate, hexane, and ethyl ether and chromatographed three times to isolate asadisulphide. At the minimum concentration of 2㎍/ml, asadisulphide inhibited adherence of 98% of HL-60 cells that have been treated with TPA. It also showed anti-cancer effect with no cytotoxity in the ED50 value of 20㎍/ml.

PLL에서의 루프필터 특성에 관한 연구

유종훈,이병수 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.3 No.3

In this paper, a phase-locked loop(PLL) designed and simulated with todays general simulation, PSPICE PLL consists of a phase detector(PD), a voltage-controlled oscillator(VCO), and a low-pass filter(LPF). LPF out of them does a great deal of effect to the frequency characteristics of PLL. By using a RC LPF, a Butterworth, and a Chebyshev LPF in turn, the frequency characteristics of the outputs according to the variations of the inputs are analyzed respectively. When 2.5KHz is selected as specified free running frequencies in VOC block, the characteristics of the outputs show that in case of 3rd order Chebyshev LPF, the capture and lock range are 1076Hz and 2112Hz respectively. Besides, this paper shows some validity that this macromodeling technique is one of the easy and accurate methods in analyzing the frequency characteristics, and useful in simplifying the circuits.

다수의 전이병소를 수반한 하악골의 중심성 점액표피양암종

유동수,박태원,최순철,이영호,소병천 大韓口腔顎顔面 放射線學會 1997 Imaging Science in Dentistry Vol.27 No.1

The authors diagnosed a 54-year-old male as central mucoepidermoid carcinoma after undergoing clinical, radiological and histopathological examinations. The characteristics were as followed: 1. Clinically, the patient complained of the painless unilateral swelling of the left mandibular molar region and had a pus discharge through the fistula. Painful nodule was palpated on the scalp of the left frontal area and it was regarded as a metastatic lesion. 2. Plain radiographs showed the ill-defined permeative radiolucent lesion. The osteolytic lesions were also detected in the cranial bone, number 9 and 11 ribs, scapula, and vertebral bodies. 3. The mandibular CT and PNS MRI showed the swelling of the left mandible and the enlargement of the several lymph nodes of 1.5 cm in size. 4. Histopathologically, many solid epidermoid type cells were mixed with mucus-secreting cells and they were arranged in duct-like structure. Most of them were epidermoid type, which indicates a high grade tumor. Mucins could be found in mucicarmine staining.