검사자에 따른 동공간거리 측정값의 오차에 관한 분석

박수봉 ; 이채호 ; 이상덕 김천대학교 2003 김천대학교 논문집 Vol.24 No.-

The purpose of this study was to determine repeatability of measure- ments of interpupillary distance. We measured far interpupillary distance and near interpupillary dis- tance at fixation distance of 40cm with a millimeter ruler and Shinnippon PD-82 corneal reflection pupillometer. The difference of measurements of IPD by a pupillometer and a ruler is little, and reproducibility by a pupillometer is better than by a ruler.

가정용 음식물처리기 디자인에 관한 연구

鄭炅秀,金德南 삼척대학교 1997 論文集 Vol.30 No.3

One of the most critical environmental problem confronting our nation today is the garbage disposals created by foods. Since the foods garbage contain high rate of moisture, creation of offensive odor and filthy water in garbage fill is now zooming up as the major social problems. Various counter measures have been taken by the government agencies concerned to solve the poignant situation. However, steps taken proved to be rather limited to for the larger restaurants or mass messing facilities while the foods garbage disposal for the individual residential house has been rather ignored. Therefore, this treatise, set aims on the study and analysis described below for the development of rational design and the selection of proposed foods garbage disposer which may be directly available and be operated at individual residential house so that house garbage problems be independently solved. Chapter 1 presents the theory that the decrease of volume of the garbage and transforming into the compost are the best option which is concluded following the analysis of economical aspects over the effects of creation of living garbage and consequent disposal process which effects the environments. Chapter 2 analysed the type of foods garbage disposers and the technical trends of prevailing disposal products in the markets in order to select the type which may be applied to urban residential houses. The needs of such disposers are confirmed through the questionaries distributed to the various housewives directly and collecting answers. Chapter 3 proposes realistic conclusion as to the design of practical, compact sized and soft imaged based on the analysis of trends of house appliances and kitchen interior where proposed disposer should be located. Conjoint analysis is applied for the selection of products concept to maximize the efficiency by the user. As the result, the disposer with price range of 250,000 Korean Won with exchangeable cartridge and the daily disposal capacity of 1 kilogram is selected as the most practically applicable one.

해산 양식어류로부터 분리된 연쇄구균증의 원인균, Lactococcus garvieae에 대한 연구

이덕찬,이재일,박찬일,박수일 한국어병학회 2001 한국어병학회지 Vol.14 No.2

본 연구는 우리 나라의 해산 양식어류 양식장에서 발생하는 연쇄구균증 원인균의 종 조성과 미생물학적 연쇄구균증 원인균의 종 조성과 미생물학적 특성을 밝히고자 하였다. 안구 백탁, 안구 출혈, 아가미뚜껑 출혈 및 복부 팽만 등의 증상이 관찰되는 해산 양식어류에서 분리된 연쇄상구균의 여러 균주들을 Lactococcus garvieae와 생리학적, 생화학적, 혈청학적 특성을 비교하였다. 또한 polymerase chain reaction(PCR)assay로 분리 균주들과 L.garvieae의 연관성을 조사하였으며 연쇄구균증 원인균들의 분포 특성을 조사하였다. 연쇄구균증을 나타내는 3종의 해산 양식어류로부터 연쇄상구균 35균주를 분리하였으며, 이 균주들의 생리, 생화학적 특성을 L.garvieae와 비교해 본 결과 15 균주가 L.garvieae에 속하는 것을 알 수 있었다 분리균주를 참조균주인 ATCC49156토끼 향혈청으로 슬라이드 응집 시험한 결과 L.garvieae KG^+type과 응집하는 균주가 7균주로 관찰되었다. 또한 L.garvieae의 특이 primers, pLG-1(5'-CATAACAATGAGATCGC-'3)와 pLG-2(5'-GCACCCTCGCGGGTTG-3')를 사용한 16S rRNA의 PCR 시험 결과 분리균주 중 21 균주가 예상 band를 형성하여 L.garvieae로 판단하였다. 이상의 결과에 따르면 35종의 분리균주 중 L.garvieae가 21 균주, Enterococcus sp.rk 5 균주, Streptococcus sp.가 9종으로 조사된 지역에서 연쇄구균에 의한 질병 발생은 L.garvieae가 우점을 차지함을 알 수 있었다. The purpose of this study was to investigate the microbiological characteristics and the distributions of the bacteria causing streptococcicosis occurred in marine fish farm, Korea. Many kinds of cultures fishes suffered from the disease accompanied with typical symptoms, including darkening of the skin, exophthalmia, petechiae inside of the opercula and distended abdomen. The isolates from the diseased fishes were compared with Lactococcus garvieae by biochmical, biophysical and serological methods and polymerase chain reaction(PCR) assay. We isolated 35 strains of the geuns Streptococcus from the diseased olive flounder, Paralichthys olivaceus, yellow tail, Seriola quinqueradiata and Korean rockfish, Sebastes schlegeli. 15 strains out of the isolates were identified to L. garvieae and the others were not because of their different biochemical and biophysical charateristics. Seven strains of the isolates were agglutinated by rabbit serum raised against L. garvieae KG^+ phenotypic cells(ATCC49156)as a reference strain. Twenty-one strains of the isolates identified to L. garvieae since they were formed the expected band through performing PCR assay using specific primers, pLG-1(5'-CATAACAATGAGATCGC-3') and pLG-2(5'-GCACCCCGCGGTTG-3'). In the present study, it showed that L. garvieae was a dominant strain causing streptococcicosis in the tested area due to occurrence of 21 strains as L. garvieae out of all the isolates, 9 atrains as Streptococcus sp. and 5 strains as Enterococcus sp.

중소기업 이업종교류회를 통한 품질경영 확산 방안 고찰

이덕수 한라대학교 2009 論文集 Vol.12 No.-

Ten years have passed since the establishment of korea small and medium enterprises hybrid business association(KOSHBA) KOSHBA is composed of over 280 regional groups , over 5,700 enrerprises are participating in the association To become a dynamic and vital association it is necessary to share learn and dicuss their managerial problems based on mutual trust and respect at the regular monthly meeting

우리나라 製造企業의 開途國 海外直接投資 進出協商에 관한 硏究 : The Entry Negotiations of Foreign Direct Investment in LDCs by Korean Manufacturing Firms

李永德,辛秀慶 충남대학교 경상대학부설 경영경제연구소 1991 경영논집 Vol.7 No.2

연약지반 성토시 사면의 안정에 미치는 Geotextile의 효과

김수일,조삼덕,우제윤 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.2

Geotextiles have been extensively used in road constructions as effective and economical materials performing several functions such as separation, filtration, drainage, protection against frost break, and as reinforcement to improve the load bearing capacity and stability of road. In this study, a method for the analysis of embankment reinforced with geotextile is studied. Computer program based on the simplified Bishop method is modified in order to investigate quantitively the effect of gotextile on the slope stability of embankment on weak soils. Evaluation of the tensile strength required for the design safety factor is also possible utilizing the computer program in this study.

다중 채널 동축 케이블의 초고주파 측정용 보드 설계

문수덕,김진규,황희용 강원대학교 산업기술연구소 2007 産業技術硏究 Vol.27 No.A

In High-Speed DSP systems, crosstalk between transmission lines of multi-channel can degrade the performance of equipment operations, This paper presents a microwave board to measure multi-channel coaxial cable assembly. The designed board has good performances from DC to 3 GHz, which have improved characteristic impedance, reduced crosstalk by using via fence, and low transmission loss. Using the designed board, we can measure characteristics of DUT(Device Under Test) such as return loss, insertion loss, crosstalk, phase delay, and characteristic impedance. The measured results are used to improve performances of a produced coaxial cable assembly.

수온 변동 자극이 양식 넙치, Paralichthys olivaceus의 비특이적 생체 방어에 미치는 영향

이덕찬,김도형,김수미,강명석,홍미주,김현정,박수일 한국어병학회 2002 한국어병학회지 Vol.15 No.2

본 연구는 넙치에 대한 수온 변동 자극의 영향을 생체 방어적인 측면에서 검토하고자 하였다. 수온 변동 자극은 매일 18℃에서 25℃까지 상승과 하강을 반복하는 방법을 사용하였으며 그 기간은 30일간 지속하였다. 실험어는 온도변화를 주기 시작한 후 28일째까지 무작위로 채포하여 말초혈액 중의 백혈구 수, 전혈의 식작용능, 활성산소, 환원능, chemiluminescence(CL) response 및 lysozyme용균능과 같은 각종 비특이적 생체방어와 관련한 실험을 수행하였다. 수온 변동 자극을 주기 시작한 후 1일째부터 시작하여 1주일 이내에 약 18%의 넙치가 폐사하였으며 이후에는 대조구와 유사하였다. 또한, 수온 변동 자극을 준 실험구의 호중구 수는 2주째에 유의적인 증가를 보였으며, 림프구 수는 2일과 3일째에 감소하였으나 1주째부터 대조구와 유사한 수준으로 회복되었다. 실험구에서는 식작용 결과 식균율과 식균지수에서 이물질 투여 후의 반응이 늦게 나타났다. 식세포의 활성을 조사한 NBT reduction 실험에서는 실험 기간 동안 대조구와 유사한 경향ㅇ르 나타내었다. 또한, CL response의 경우, 실험구는 온도 변동 자극초기에 대조구에 비하여 유의적으로 낮았다. 그리고, 식세포가 분비하는 용균성 효소인 점액 내 lysozyme의 활성은 실험 기간 동안 실험구에서 낮게 나타나는 경향을 보였다. 이러한 여러 가지 비특이적 생체 방어 반응의 저하 현상은 수온 변동 자극 초기에 나타났으며, 1주일 정도 지속하면 그 환경에 적응하는 것을 알 수 있었다. 그리고 이러한 현상은 이들이 초기 폐사 발생과 어떤 상관 관계에 있는 것으로 생각되었다. This study was performed to know the effects of stress nduced by the daily fluctuation of water temperature fro 18? to 25? up and down for 30 days on the defence mechanism of olive flounde,r Paralichthys olivaceus. To make clear the temperature stress on the defense mechanism of the tested fish, several factors of immune response such as counting of leucocyte appearance in periopheral blood, phagocytic activity in whole blood cells, nitroblue tetrazolium(NBT) reduction, chemiluminescence(CL) response, and lysozyme activity were investigated at 28 days after giving the change of water temperature. The fish was controlled under the none feeding condition during experimental period. Mortality of the tested fish was rapidly increased up to 22% within the first one week of the experimental period without any additional stress factors. The number of neutrophil of peripheral blood in the tested group was significantly higher than the control group at the 2nd week, but the number of lymphocyte was significantly lower than the control group at the 1st and 3rd day of the experimental period, respectively. In the NBT reduction test, the activity of macrophage in the control group fish was the highest on the 7th day while that in the tested group was on the 3rd day. Also, the phagocytosis of tested group against formalin killed cells was retarded compared with the control CL response of the tested group was significantly lower from 2nd to 5th day of the experimental period than the contro. The lysozyme activity of tested group was remained higher during the experimental period than the contro. Even through the tested fish showed different results in some non-specific factors of immune responses between tested and control group fish, olive flounder seems highly adaptable in repeated water temperature change in condition after one week under the given temperature fluctuation range

보우타이 패치 안테나의 초광대역화 설계

문수덕,박재일,최경,황희용 강원대학교 정보통신연구소 2005 정보통신논문지 Vol.9 No.-

In this paper, A ultra wideband antenna with electromagnetically coupled feeding is presented. The designed antenna is composed of Bow-tie patch with parasitic patch ground of a semicircular shape. The measured bandwidth of the designed antenna is from 2.5GHz to 8.3GHz for -10dB return loss (VSWR < 2). This antenna shows a similar radiation pattern of monopole and maximum gain better than ideal dipole throughout the operating frequency band.

비동기식 IMT-2000 시스템의 셀 탐색

김덕수,김강온,김철성 전남대학교 전자통신기술연구소 2001 전자통신기술논문지 Vol.4 No.1

In this work, cell search which is one of the important functions of W-CDMA system in Rayleigh fading channel is studied by cell search simulation of asynchronous IMT-2000 system(3GPP). For the optimization of this process, three stages are considered: 1) slot synchronization, 2) frame synchronization, and 3) scrambling code identification. It is found that key system parameters such as Primary Synchronization Channel (P-SCH). Secondary Synchronization Channel(S-SCH), and Common Pilot Channel (CPCH) loading factor are optimized. It is noted that the smaller optimal threshold value, the larger SNR of the received signal. Therefore, it is important that the optimal threshold value should be selected in the region of SNR