대형유통상업시설 개발을 위한 소비자 선택기준에 관한 연구 -용인/분당 지역 대형백화점을 기준으로-

정문오 ( Moon Oh Jeong ),김재환 ( Jae Hwan Kim ),김용일 ( Yong Il Kim ),이상엽 ( Sang Youb Lee ) 한국부동산분석학회 2009 不動産學硏究 Vol.15 No.3

Today`s distribution market has many structures such as department stores, large discount stores, traditional markets, and internet shopping malls, and the choice variety of the consumers` purchase behavior increased. For this, this study conducted research about consumer choice criteria about department stores among many distribution market structures and consumer satisfaction in Yong-In and Bun-Dang area. The degree of importance about choice criteria for department stores in general was analyzed, and for the degree of importance items, degree of preference about the actual department stores in Yong-In and Bun-Dang area was additionally analyzed. The selection of factors for department store choice criteria was ultimately done by consulting with researchers of the previous studies and distribution specialists, and the survey was conducted from an outside survey institute, and the relative importance was evaluated by AHP method. Also, additional research was conducted on the actual consumer preference of department stores located in Bun-Dang and Yong-In area about each choice criteria item. From the analysis results, the factors that are considered in priority in choosing a department stores and actual preference of department stores were analyzed, and the consumer characteristics and new perception standard were identified.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

연령증가에 따른 혈압요소들의 좌심실비대 및 관동맥질환과의 관련성

박재석,박창규,박미영,박재형,김용현,나진오,신성희,서순용,홍순준,박성미,임홍의,김응주,서홍석,오동주,노영무 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

치성감염에서 기원한 하행성 괴사성 종격동염의 치험례

오승환,최문기,조이수,조용민 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.5

Mediastinum is the space located between the right and left lung in the center of the thorax, and contains many vital organs such as heart, aorta, esophagus, vagus nerve, lymphatics. So the infection of mediastinal space cause a serious and potentially fatal process. Like other infections, surgical drainage, aggressive antibiotic therpy and supporative care are recommended for optimal outcome. Airway management in the presence of the neck, glottic edema, elevation of the tongue is a formidible problem especially in the case from odontogenic origin. We have rcently experienced such a case resulting in a number of local and systemic complications.

폐목재로 제조된 파티클보드의 성능평가

오용성,차재경,곽준혁 한국목재공학회 2002 목재공학 Vol.30 No.4

현재 폐목재의 발생량은 국내의 연간 목재사용량의 40% 정도의 수준으로 국내의 목재자급율을 고려해볼 때, 목재패널산업에서의 이런 폐목재의 재활용은 많이 장려되어야 한다. 본 연구는 폐목재로부터 얻어진 파티클과 실험실에서 합성한 요소수지를 폐목재파티클의 전건무게에 대해 6% 첨가하여 열압온도 162℃와 열압시간 5분에서 파티클보드를 제조하고 ASTM D 1037 방법에 의해 파티클보드의 성능을 평가하였다. 파티클보드의 성능을 평가한 결과는 KS F 3104 파티클보드 8.0형의 최소요구를 만족시키는 것이다. 이런 파티클보드의 성능평가 결과는 폐목재가 파티클보드의 원료로 적합하다는 것을 보여준다. The generation of wastewood is currently about 40% level of the amount of domestic wood use. When the rate of wood self-supply is considered, the recycling of wastewood in wood panel products industry should be encouraged. This study was evaluated the performance of particleboard (PB) made from wastewood. PBs were manufactured with the synthesized urea-formaldehyde resin at 5 minutes hot-press time, and at 162℃ press temperature with 6 percent resin solids level on an ovendry wastewood particle weight basis. The PBs were tested by the procedure of ASTM D 1037. Test results exceeded the minimum strength requirement according to KS F 3104 Particleboard type 8.0. The PB's performance showed that wastewood is suitable raw material for PB.

STS304와 S15C 이종마찰압접부의 접합계면 응력해석

오정국,차용훈,성백섭,박창언,김하식,김충환 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.3

Friction welding has many merits such as energy efficiency, simple processing, etc. but it is difficult to obtain good welding at the welded interfaces and heat affected zone. It is discovered that stress singularity exists at the interfaces and heat affected zone. The computer program based on boundary element method is utilized in this study. A mathematical model is implemented based on results from several experiments performed at and around the welded interfaces and heat affected zone of disimilar metal under static and dynamic loadings. This study is to investigate the characteristics of the deformation and fracture behavior around interfaces for friction welded materials under static tensile load. Also, the stress distribution at the tip of crack is analyzed by using BEM based on Kelvin's solution of 2-dimensional binding zone. The results of BEM are identical with those in case of considering interfaces of both heat affected zone. Also, stress singularity at the tip of interfaces appears when the elastic modulus ration is 1.07.

전자패키지 μBGA 무연솔더와 무전해 Ni 도금층의 계면 접합특성

오용준,오성룡,신봉문 한밭대학교 생산융합기술연구소 2004 생산기반기술연구소 논문집 Vol.4 No.1

The morphology and thermal stability of the interfacial phases in the joints between Pb-free solder (Sn3.5Ag0.7Cu) and electroless Ni-P(14at%P) and electrolytic Ni under bumper metallizations (UBM) were investigated as a function of solid state aging. Samples were prepared by reflowing at 250℃, N_(2) atmosphere and aging in the range of 125 to 170℃ for up to 1000h. After reflow, the interfacial intermetallic compound(IMC) was mostly Ni_(3)Sn_(4) in the electrolytic Ni/solder joint. After relatively short aging time, the interfacial IMC on electrolytic Ni layer developed into the dual layer structure of Ni_(3)Sn_(4)(bottom) and Cu_(6)Sn_(5)(top). But IMC on electroless Ni-P layer were Cu_(6)Sn_(5) and changed into the dual structure only after long aging time of 1000h. The growth rate of IMC with aing was higher on electrolytic Ni layer than on electroless Ni-P. The different behavior of electroless Ni-P/SAC joint came from Ni_(3)P formation between IMC and electroless Ni-P layer which retards interfacial reaction through reducing the diffusion of Ni and Sn. The thickness of Ni_(3)P layer was propositional to that of IMC. For longer aging time, NiSnP layer was found at the interface between IMC and Ni_(3)P layer. Interestingly, in spite of low consumption rate of electroless Ni-P than electorlytic Ni layer by suppressing IMC growth, the interface of Ni-P/IMC was locally hollowed by the accelerated reaction of the Ni-P layer through local thickness reduction of Ni_(3)P and NiSnP layers. This reduced the effective remaining thickness of Ni-P layer.

지반반응 곡선을 이용한 터널 해석

오영석,강성민,박용원 명지대학교 대학원 1999 대학원논문집 Vol.3 No.-

In general, the accurate analysis method of stress-strain behaviour of tunnel is not developed yet because of the following difficulties in (1) the estimation of loading conditions around tunnel, (2) the determination of ground-support system interaction. and (3) the selection of relative ground material properties. In NATM, these problem can be complemented by design modification during tunnel excavation. In this study, two FORTRAN programs based upon ground response curve are developed for the estimation of the tunnel crown deformation. And the results are compared with FLAC analysis results. As a results of the study, the ground response curve analysis method using FORTRAN programs are recommended for the simple circular tunnel in homogeneous ground.

산·염기 변화가 개구리 심방근 활동전압에 미치는 효과

오형균,엄대용,이상돈 중앙대학교 의과대학 의과학연구소 1983 中央醫大誌 Vol.8 No.1

Frog atrial muscle preparations were used to investigate effects of acid-base disturbances on the resting membrane potential and action potential on a cellular basis. To record the action potential of atrial muscle cells, 3M KCL-filled glass microelectrodes were directly introduced into the muscle cells in acidic(pH 6.0) and alkali(pH 8.0) conditions which were induced by addition of HCl and NaOH respectively into media. The following results were obtained : 1. In acidic condition, the resting membrane potential hyperpolarized from -(80±4.1)mV(P<0.05) and the overshoot potential was decreased significantly from 26±2.4mV of the control to 18±1.7mV(p<0.001). The time needed to repolarize 90% of the action potential duration, (repol 90%) shortened from 460~560 msec of the control to 400~520 msec in acidic intervention. 2. Little effect on resting membrane potential and action potential amplitude was observed in the alkali condition but Repol 90% shortened from 420~520 msec of the control 380~460 msec. (p<0.001) above results may be interpreted as that hydrogen ion affects the surface charge density at atrial muscle cells in such a way to inhibit ionic currents, especially slow inward and delayed outward currents.

공주 공산성 원형연못의 지반에 대한 탄성파 굴절법 탐사

오진용,변성환,서만철 공주대학교 문화재보존과학연구소 2004 문화재과학기술 Vol.3 No.1

탄성파 탐사는 인공지진파를 이용하여 지표면 하부의 물성을 알아내는 지구물리탐사로서 20세기 초부터 석유탐사와 공학적 지반조사에 가장 널리 사용되었다. 굴절법 탄성파 탐사는 지층의 탄성파 속도를 알아내는 방법으로서 최근에는 석조문화재 등의 지반특성 조사에서 사용된 예가 있다. 이번 연구에서는 공주 공산성의 쌍수정 광장에 위치하는 공산성 원형연못 주변의 지반에 대하여 굴절법 탐사를 실시하였다. 쌍수정 광장은 기본의 발굴조사를 통하여 백제 추정왕궁지가 위치한 곳으로 알려졌으며, 광장 남쪽에 원형연못(상면직경 7.3m, 바닥직경 4.78m, 높이 3m)도 발굴되었다. 원형연못 주변에 5개 탄성파 측선을 설치하였고, 해머 타격점과 수신기 배열을 3가지 다른 방식을 적용하여 24m, 31m, 48m 측선길이의 굴절법 자료를 얻었다. 대체로 공산성 원형연못 주변의 지반은 3개 층으로 구성되어 있다. 각 층의 겉보기 속도는 약 261~391 m/s, 약 591~992m/s, 약 1950~3230 m/s이며, 첫 번째와 두 번째 측의 두께는 각각 약 2~2.4m 와 4.6~8.6m이다. 일반적으로 최하부 층의 속도는 기반암, 상부층들이 속도는 풍화토에 대응한다. 그러나 두 번째 층이 주시곡선 형태와 속도 범위는 국내 석탑 문화재 하부의 것과 유사한 것으로 보아 공산성 연못 주변은 인공적인 기초지반의 가능성을 제기하며, 그렇다면 공산성 원형연못은 파내려 간 것보다는 쌓아 올렸을 것이다. Seismic survey using artificial earthquake waves is one of the most popular geophysical method for petroleum exploration and engineering prospecting from the early 20th century. Recently seismic refraction method which can reveal the sub-surface velocity structure is introduced for the site characterization of the domestic stone pagodas. The purpose of this study is to understand seismic velocity structures of the underground near the Kongsansung Cirular Pond at the southern part of the Ssangsujung Park in Gongju. As the result of early excavations, the Ssangsujung Park has been known as the assumed site of the Palace of the Paekje Dynasty and Circular Pond (top diameter 7.3 m, bottom diameter 4.78m, and height 3m) was also discovered. Along 3 seismic lines near the Circular Pond, three kinds of source-receiver array are applied to obtain the refraction data with the corresponding maximum offset of 24m, 31m, and 48m. Shallow subsurface near the Circular Pond largely consists of three layers with the velocities of about 261~392 m/s, about 591~992 m/s, about 1950~3230 m/s, respectively. Upper two layers have the thickness of about 2~2.4 m and about 2.6~8.6 m each. In general, the bottom layer can be interpreted to the basement, and the upper layers with the lower velocities can be correlated to the weathered soil. Compared with the pattern of the traveltime-distance graph and the range of the velocities of the site near domestic stone pagodas, however, the middle layer can be interpreted as the artificial foundation. Consequently, the Kongsansung Circular Pond is possibly built upwardly rather than digging.