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김덕문(Kim Derk-moon),홍석일(Hong Souk-Il),신효범(Shin Hyo-Bum) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
Masonry stone pagoda has been constructed by stacking the masonry stone members. It has the big difference with the structural behavior of continuum structure as discontinuum structure. The problem about the safety of masonry stone pagoda is decided by structural behavior of discontinuum surface between contact stones rather than the failure by the lack of material strength. Therefore, we estimate structural behavior of masonry stone pagoda under the lateral load according to the internal Jeoksim types.
금융위기 전, 후 단계별 기업의 마케팅 성과에 대한 광고선전비, 판매촉진비, 연구개발비 효과: 고객만족의 조절효과
김덕문 ( Deok Mun Kim ),이재림 ( Jae Lim Lee ),이태호 ( Tae Ho Lee ),하홍열 ( Hong-youl Ha ) 한국고객만족경영학회 2016 고객만족경영연구 Vol.18 No.2
마케팅 요인이 기업의 마케팅 성과에 미치는 영향에 대해서는 선행연구들에서 많은 조명을 받아왔으나, 고객만족지수(KCSI)의 조절효과에 관한 연구는 상대적으로 제한적이었다. 따라서 본 연구에서는 마케팅 요인, 그리고 기업의 마케팅 성과 간의 관계에서 고객만족지수의 조절적 효과를 확인하고자 한다. 특히 글로벌 금융위기 전, 후 단계별 분석을 통해, 외부상황을 고려한 고객만족지수의 조절적 효과를 알아보고자 한다. 연구결과, 다음과 같은 중요한 결과를 도출하였다. 첫째, 2006-2007년 기간에 광고선전비만이 유일하게 기업의 매출액 증가에 영향을 미쳤으며, 고객만족과 광고선전비의 조절효과만에 매출액 증가에 유의한 효과가 나타났다. 둘째, 금융위기가 시작 이후인 2009-2010년 기간 동안에는 광고선전비, 판매촉진비, 연구개발비의 매출액 증대효과는 나타나지 않았으며, 오직 고객만족과 판매촉진비의 조절효과만이 유의하게 나타났다. 마지막으로, 최근 경제활동을 나타내는 2013-2014년 기간동안에는 오직 광고선전비만이 매출액 증가의 직접효과가 나타났고, 고객만족의 조절효과는 나타나지 않았다. 이와 같은 결과는 금융위기 전 및 금융위기가 현저히 지난 시점에서는 광고선전비가 기업의 매출액에 기여하는 부분이, 다른 판매촉진비나 연구개발비에 비해 매우 유효하다는 것을 제시하고 있다. The marketing literature has focused on the importance of marketing mix on firm performance, whereas there is a lack of research that addresses the moderating role of Korean Customer Satisfaction Index(KCSI). This study focuses on the moderating effect of KCSI regarding firm performance, particularly in the context of before and after the global financial crisis. The findings show three important implications that can manage customer satisfaction, resulting in increasing firm performance. First, advertising expenditure had only a significantly effect on the increase of firms` sales volume during the session of 2007-2007. Second, There were no effects of advertising expenditure, sales promotion, and R&D on the increase of sales volume, but it was appeared from moderating effects of both satisfaction and sales promotion after the beginning of the global financial crisis, 2009-2010. Finally, advertising expenditure on the increase of sales volume was only statistically supported during the session of 2013-2014, but there was no moderating effect of customer satisfaction. In line with these observations, our findings suggest that advertising expenditure is more powerful to increase firm performance compared to other two factors such as sales promotion and R&D during subsequent events of before and after the global financial crisis.
김덕회(Duck Hoi Kim),김재훈(Jae Hoon Kim),문순일(Soon Il Moon) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
In this study, the intrinsic static/dynamic fracture toughness of Al 7175-T74 is evaluated from the apparent static/ dynamic toughness of notched specimen. The critical average stress fracture model is suggested to establish the relationship to predict the intrinsic fracture toughness from the apparent fracture toughness of a notched specimen. The critical average stress fracture model is established using the relation between the notch root radius and the effective distance calculated by finite clement analysis. Also, effective distance is applied 10 estimate the failure criterion for the combustion pipe with notch. It is conclude that the true fracture toughness can be estimated from test results of apparent fracture toughness measured by using a notched specimen. Also, the effective distance can be used to evaluate the failure criterion of structure with notch.
내측 반월상 연골 후방 골 기시부 파열의 수술적 봉합술
김덕원,문정석,김민건,김진구,Kim, Deok-Weon,Moon, Jeong-Seok,Kim, Min-Gun,Kim, Jin-Goo 대한관절경학회 2005 대한관절경학회지 Vol.9 No.1
목적: 본 연구의 목적은 내측 반월상 연골 후방 골 기시부 파열 환자의 임상적 특징과 골 기시부 봉합술 및 그 임상 결과를 알아보고자 한다. 대상 및 방법 2003년 9월부터 2004년 8월까지 본원에서 내측 반월상 연골 후방 골 기시부 파열로 진단받은 환자 27명을 대상으로 하였고 이 중 23명은 봉합술을 시행하였다. 평균 연령은 60.2세였다. 봉합술은 골 기시부 처리시 전외측 창을 이용한 1군(14예)과 후내측 창을 함께 이용한 2군(9예)으로 나누었다. 동반된 관절 연골 손상은 ICRS system을, 술 후 임상결과는 Lvsholm Knee Score를 이용하였다. 결과: 최종 추시상 Lysholm Knee Score는 1군이 77.1점(범위; $58{\sim}97$점), 2군이 81.4점(범위; $72{\sim}94$점)이었다(p>0.05). 봉합술이 실패한 경우는 23예 중 4예였다. 1군은 3예로 반월상 연골 부분 절제술로 치료하였으며 2군은 1예로 장력이 소실되었으나 관찰 중이다. 관절연골 병변은 20예에서 체중 부하 부위에 있었고 Outerbridge 분류상 III기 8예, IV기 5예였다. 결론: 내측 만월상 연골 골 기시부 파열에서 pull-out 봉합술이 원주 테 장력을 복원하고 관절염을 예방하는 데 유용한 치료라고 사료된다. Purpose: This study is to evaluate the clinical findings of media] meniscus root tear, pull-out repair technique and it's short term results. Materials and Methods: From September 2003 to August 2004, 23 cases of total 27 medial meniscus root tears were treated by pull-out repair technique. Mean age was 60.2 years old. The pull-out technique was divided into 2 groups In group 1(14/23 cases), anterolateral portal was used and in group 2(9/23 cases), anterolateral and posteromedial portals were used for bed preparation. Concomitant cartilage lesions were documented as ICRS mapping system. The clinical outcomes were evaluated according to Lysholm Knee Score. Results: The postoperative Lysholm Knee Score was 77.1(range; $58{\sim}97$) in group 1 and 81.4(range; $72{\sim}94$) (p>0.05). The failure rate was 3 of 14 cases(21.4%) in group 1 and 1 of 9 cases(11.1%) in group 2. Twenty of 22 cases(90.9%) showed cartilage lesions in weight bearing portion of medial femoral condyle which were 8 grade III and 5 grade IV according to the Outerbridge classification. Conclusion: Pull-out repair seems to be a useful treatment of the medial meniscus root tear for preservation of circumferential hoop tension of meniscus.
석탑구조물의 표면거칠기 및 충전재에 따른 석재접촉면의 구조특성 분석
김호수(Kim, Ho-Soo),김동관(Kim, Dong-Kwan),이승희(Lee, Seung-Hee),김덕문(Kim, Derk-Moon),조상순(Jo, Sang-Sun) 대한건축학회 2018 大韓建築學會論文集 : 構造系 Vol.34 No.6
The stone pagoda structure is treated as a discontinuous masonry structure, and the contact surface characteristics between stones is a very important factor in the discontinuum behavior analysis. So, it is necessary to find out material and structural characteristics of stone contact surface to perform the structural analysis for safety evaluation. Accordingly, it is important to analyze the material properties of stone surface and secure the structural characteristics through various contact surface states. Therefore, in this study, various test specimens applying the filler between the surface roughness and the stone in the contact surface treatment technique of the stone pagoda were manufactured, and compression test and shear test were carried out. Also, we analyzed the material and structural characteristics of the stone contact surface through the comparison of experimental results.
김호수(Kim, Ho-Soo),김재윤(Kim, Jae-Yoon),박영신(Park, Young-Sin),정성진(Jung, Sung-Jin),김왕직(Kim, Wang-Jik),김덕문(Kim, Derk-Moon) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.10
The traditional fortress structures have the various construction types in the shapes, slopes and infilled materials. Also, we should consider the various applied load conditions as design variables, and then check the dicontinuum behavior characteristics for the reasonable structural modelling and analysis of fortress structure. Therefore, this study selects the representative fortress structure, and then performs the structural modelling considering the various construction shapes and slope variations. Especially, this study evaluates the structural behaviors according to the construction types of fortress structures by comparing the stress and displacements through the discrete element analysis.
김호수(Kim Ho-Soo),차근창(Cha Geun-Chang),정성진(Jung Sung-Jin),김왕직(Kim Wang-Jik),배병선(Bae Byung-Sun),김덕문(Kim Derk-Moon) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.9
The construction types of the arched stone bridges show generally the semi-circled shapes. But, the several types have been constructed by considering the height-width ratios according to the installation locations. The arched stone bridges with the various arched types have the different load transfer mechanism and show the different structural behavior according to the axis variation. Therefore, this study analyzes the mechanical behavior characteristics according to the various arched types and applies the discrete element method for the modelling and analysis of discontinuum structure.