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홍권의,김재평 건국대학교 1994 대학원 학술논문집 Vol.39 No.-
We can obtain a particle velocities using a transmission grating techniques, which has fixed spatial frequency. But this techniques gives us only the velocity information about the particles. In this case, we can use an optical variable frequency transmission grating technique. We can make Moving particles image on the VFG and detects signal using an PMT. From this we can find a size information about particles. We can arrange the TG and VFG properly, then particles velocities and sizes will be measured simultaneouly.
사회체육 활성화를 위한 학교체육시설 활용의 조건에 대한 교사의 인식
정의권,홍준기 중앙대학교 스포츠과학연구소 2003 體育硏究 Vol.- No.19
The purpose of this study was to elucidate what cognition teachers have of school physical education facilities with which athletics in public were available and of the preconditions of the utilization. For that purpose a questionnaire poll was carried out on 351 elementary school teachers, and then an analysis was made of the responses. Based on the results, suggestions were presented for activating athletics in public using school physical education facilities. First, it is needed to build a close collaboration system with the school authorities. It is true that the school authorities have not yet constructed a collaboration system with local residents in utilizing school facilities. Therefore, it is required to initiate an appropriate deliberation system for utilizing school facilities. Second, local communities are necessitated to actively take part in funding repairs of facilities. Local residents today only utilize school physical education facilities but do not take the responsibility of them. Therefore, it is recommended that local communities should take charge of commitment to the management of a certain part of the facilities.
김준환,김영권,홍권의 건국대학교 산업기술연구원 1997 건국기술연구논문지 Vol.22 No.-
Optical communications through the atmosphere offer the potential of relatively inexpensive high speed line-of-sight communications. Furthermore, the performance of any gound-to-ground or satellite-to-ground optical link will be affected by the atmosphere. The atmosphere is an imperfect medium for transmission of optical communications signals. It is not homogeneous and further, it is dynamic in its behavior. The atmosphere can be considered as producing some effects on transmission of light. These effects are turbulence, absorption, and scattering. All three can reudce the amount of light energy that is collected at the receiver and corrupt the data being sent. Although the effect of attenuation due to absorption/scattering can be overpowering in a link design, and can be compensated with judicious choice of wavelength of light signal, the fluctuations in amplitude and phase due to turbulence give rise to a number of important effects.
共同住宅 居住者 特性과 住居環境滿足度의 相關關係에 관한 硏究
金基洙,朴碩鉉,梁富弘,崔生吉,朴義權,孫泰鎭,成基文 충주대 2004 産業科學論文集 Vol.12 No.-
The purpose of this research was to analyze the correlation of the characteristics of dwellers and residential satisfaction in apartment housing. The contents of this research is to identify characteristics of dwellers, which might have an influence on residential satisfaction in apartment housing. In conclusion, the number of a family, the floor level, the size of housing unit and tenure had statistically significant correlations with the residential satisfaction in apartment housing.
Hong, Kwon-Eui KOREAN PHARMACOPUNCTURE INSTITUTE 2006 Journal of pharmacopuncture Vol.9 No.1
Objectives : This paper aims to report the clinical effectiveness of acupuncture & herbal treatment on ptosis, which has no way to be treated but the operative method like a tarsectomy. Methods : This study was carried out, from February 2003 to December 2003, to the twenty patients who were diagnosed as an acquired ptosis and treated by acupuncture and herbal treatment in the department of Acupuncture & Moxibustion, Daejon University Oriental Hospital. The selected acupoints were hasamhwang(下三黃) in normal side, BL 2, BL 60(崑崙), BL 66(通谷), ST 41(解谿), ST 44(內處), LI 4(合谷), LI 5(陽谿), guhu(球後), emi(魚尾) in abnormal side. The method of acupuncture insertion for each point was neutral(平補平瀉). The treatment frequency was once a day. And all patients were administered the Bojungikkitanggamibang(補中益氣揚加味方), which is known to be able to rise up the Gi of spleen(脾氣). Result & Suggestion : The treatment result showed that excellent was 95%(19) and poor was 5%(1). Through this result, we can know that oriental medical treatment for ptosis is effective. But continuous study about oriental medical treatment for ptosis is needed hereafter.
Kwon-Eui Hong,Yeon Ji Kim,Yoon Jung Choi 대한상부위장관ㆍ헬리코박터학회 2023 Korean Journal of Helicobacter Upper Gastrointesti Vol.23 No.4
Mixed neuroendocrine-nonneuroendocrine neoplasms (MiNENs) of the gastrointestinal tract, particularly gastric MiNENs are rare, and a gastric adenoma that occurs concomitant with a neuroendocrine carcinoma (and not gastric adenocarcinoma) is extremely rare. The clinicopathologic and pathogenetic features of MiNENs remain unclear, and treatment guidelines are currently unavailable. A 75-year-old man patient was referred to our hospital for management of a gastric adenoma. Endoscopy revealed an elevated mucosal lesion (10 mm×10 mm) at the greater curvature of the lower gastric body. The patient underwent endoscopic submucosal dissection for removal of the gastric neoplasm. Histopathological evaluation revealed mixed epithelial dysplasia, low and partly high grade and a neuroendocrine tumor (grade 1). Immunohistochemical analysis showed neoplastic cells with immunopositivity for CD56, synaptophysin, and INSM1, and Ki-67 showed 2.2%. Therefore, the patient was diagnosed with a low-grade gastric MiNEN. We present a rare case of gastric MiNENs (adenoma-neuroendocrine tumor) together with a literature review.
갈릴리안 광학계를 사용한 IM/DD 광무선통신 시스템에서 830[nm] 광파장에 대한 전송거리 제한 해석
홍권의(Kwon-Eui Hong),고성원(Sung-Won Ko),조정환(Jung-Whan Cho) 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.11
In terrestrial wireless optical communication links, atmospheric effects including turbulence, absorption and scattering have significant impact on the system performance. Based on the analysis of transmission in atmospheric channel concerning 830[nm] wavelength diode laser beam, performance of free space optical (FSO) link utilizing Galilean optics as a laser beam transmitting and receving optics, PIN photodiode as a detecting device. In this paper we designed optical link equation for received optical power and we analyze the atmospheric effects on the signal to noise ratio (SNR) and bit error rate (BER) of an terrestrial FSO system. We show that the possible communication distance for BER=10<sub>-9</sub> in proposed adverse atmospheric conditions.
권홍규(Hong-Kyu Kwon),홍정의(Jung-Eui Hong) 한국산업경영시스템학회 2007 한국산업경영시스템학회지 Vol.30 No.2
“Getting to market first” is extremely critical in this competitive business environment. The speed at which products are developed and released to market is tightly linked to profitability and market share. Many companies that have been very skeptical of Rapid Tooling (RT) technologies developed so far are working on Hybrid Tooling (HT) that can really meet the market standards. This paper describes the experimentation how HT process has been being successfully established and effectively applied with typical case study. Through the experimentation, Ceramic-filled HT was found to be aptly suited for the low grade mold, both in terms of the lead time, dimensional accuracy, and tooling cost.
카세그레인 광학계를 사용한 광무선통신 시스템에서 550[nm], 850[nm] 및 1550[nm]의 광 파장에 대한 안개 및 포인팅 에러의 영양에 대안 해석
홍권의(Kwon-Eui Hong) 한국조명·전기설비학회 2008 조명·전기설비학회논문지 Vol.22 No.12
안개 및 대기의 교란이 광무선 통신에 주는 영향을 해석하기 위해 가시광선영역의 LD(laser dieode) 및 적외선 영역의 LD 사용하고, 카세그레인 광학계를 이용하여 광을 송수신하게 하였으며, 광 소신소자로는 APD(avalanch photo diode)를 사용함을 가정하여 대기 중의 안개의 정도에 따른 가시도 및 교란의 세기를 나타내는 굴절륜 구조 상수에 따른 광 수선 전력, 잡음 전력을 고려한 SNR(signal to noise ratio)을 계산해 보고 각각의 통신 상태에서 BER(bit error rate)이 10<SUP>-9</SUP>이 가능한 통신 거리를 알아보았다. Atmospheric effects on laser beam propagation can be broken down into two categories: attenuation of the laser power and fluctuation of laser power due to laser beam defomation. Attenuation consists of scattering of the laser light photons by the fog. Laser beam deformation occurs because of small-scale dynamic changes in the index of refraction of the atmosphere. This causes pointing error. In order to analyse these effect on optical wireless communication system, in this paper uses cassegrain optics as a transmitting and receiving telescope, APD as a detecting device and LD as a light source. The signal modulating and demodulating method is a IM/DD. I show the effects of fog and pointing error and calculate the possible communication distance for BER is 10<SUP>-9</SUP>.