국내 도로화물수송의 허브네트워크 설계

김남주 ( Nam Ju Kim ),김용진 ( Yong Jin Kim ) 한국로지스틱스학회 2012 로지스틱스연구 Vol.20 No.2

본 연구는 허브간 수송비용할인의 비제약 허브네트워크를 설계하여 김남주 외 (2008), 김남주와 김용진 (2011)의 연구를 개선하였다. 허브간 대용량수송과 공차율 저감으로 인한 수송비용 절감효과를 고려하되 허브경유의 우회수송이 비용효과적이지 않을 경우 기종점간 직송을 하는 현실 수송시장특성을 반영할 수 있도록 설계했으며, 분석결과를 기존연구와 비교 종합검토하였다. 국내 도로화물수송망에 적용한 결과, 허브수가 늘어날수록 기종점 수요의 허브경유로 인한 우회수송의 증가로 톤km는 점차 증가하는 반면, 허브간 집적수송의 규모의 경제효과로 수송비용은 점차 감소하였다. 최적 허브입지는 전구간과 허브간의 수송비용 할인구간, 제약과 비제약의 허브정책 등 허브네트워크 설계방법과 무관하게 허브수가 늘어남에 따라 수도권, 경상권, 충청권, 전라권의 순서로 선정되었으며, 수송의 간선축인 경부축에 집중되었다. 허브수 증가에 따른 수송비용의 한계감소율은 허브간 수송량 분산에 따른 규모의 경제효과 감소로 허브수가 늘어남에 따라 감소하였다. 또한, 수송량 증가에 따른 비용할인효과가 클수록 허브간 거리가 멀어지는 반면, 비용할인효과가 작을수록 허브간 거리는 가까워졌다. 본 연구는 GIS프로그램을 이용한 공학적 접근방법을 통해 현실 수송특성을 반영할 수 있는 허브네트워크를 설계한 것으로, 산출된 허브입지는 실제 운영, 건설, 계획 중인 내륙화물기지입지와 유사한 것으로 나타났다. 향후, 내륙화물기지 신설 및 확장 타당성 검토 등 국가 수송비용을 절감하려는 정책적 측면에서 의미가 있을 것으로 판단된다. This study presents an algorithm and conducts a computer experiment based on real field data of Korea that determines optimal number and location of hubs and routes among shippers to minimize total transport costs. The algorithm is a non-strict hub network design policy based on the fact that freight trucking between hubs can reduce the costs due to large size cargo and reduced empty movement. Furthermore, the algorithm allows direct transportation between shippers if a route connecting hubs is not cost- effective, which is different from the assumption in the previous study (Kim et al. 2008). A greedy-interchange algorithm was employed for hub location decision process and EMME/2 was applied to find route searching process. Applied to national road transport network of Korea, as the number of hubs increase, Seoul metropolitan, Gyeong-Nam, Chung-Nam, Jeon-Nam, Gyeong-Buk, Chung-Buk are selected in order. Freight traffic is concentrated on main corridor between Seoul and Busan area. The proposed non-strict hub network design policy may increase the transportation distances but can reduce overall transport costs by passing through the hubs. Total transport costs reduction can be achieved as the number of hubs increase. However the marginal amount of reduction by increasing number of hubs gradually decreases because the cost reduction of decreased detour transportation length between non-hubs and hubs is smaller than the amount of discount reduction for dispersion of inter-hubs transportation volumes.

노후산업단지 재생사업 효과분석 개선 연구

김남주,Kim, Nam Ju 한국토지주택공사 토지주택연구원 2020 LHI journal of land, housing, and urban affairs Vol.11 No.1

This paper proposed an effect analysis method that meets the characteristics and purposes of the revitalization project for old industrial complexes, and quantified the economical effects about the project in Jeollabuk-do by case analysis. The problems on the existing effect analysis about revitalization project for old industrial complexes, estimated as transportation benefits on the main entrance roads plan and the increased rent benefits on the internal roads and other plans, were examined. In addition, the land use plan ratio on the old industrial complexes compared to the averages, and the surveys to the residential company were conducted. And this paper finally proposed an effect analysis methodology for the revitalization project for old Industrial Complexes in consideration of the increase in the operation rate and the added values through the conversion to high value-added industrial sectors. It was analyzed that new value added of KRW 743,278 million can be generated for next 30 years when the revitalization project for old Industrial Complexes in Jeollabuk-do is implemented.

개안수술의 의의

김남주,Kim, Nam-Ju 한국가톨릭의료협회 1984 한국가톨릭병원협회지 Vol.15 No.-

섬유형성이상 환자의 눈 소견

김남주,왕규창,김석화,손우길,황정민,Nam Ju Kim,Kyu Chang Wang,Suk Wha Kim,Woo Gil Son,Jeong-Min Hwang 대한안과학회 2006 대한안과학회지 Vol.47 No.5

Purpose: Fibrous dysplasia is an uncommon disease that replaces normal bone tissue with fibrous and osteoid tissue. We evaluated patients with fibrous dysplasia involving orbital bones to identify the ocular characteristic findings. Methods: We recruited 6 patients with fibrous dysplasia of the craniofacial bone. Best corrected visual acuity and facial asymmetry were measured. Slit lamp biomicroscopy, tonometry, strabismus examination, and funduscopy were performed. Results: Strabismus, exophthalmos and optic neuropathy were found in 5, 4, and 2 patients, respectively. One patient underwent a strabismus surgery. One patient had McCune-Albright syndrome, exhibiting a caf?-au-lait spot of the skin and precocious puberty. All 6 patients had facial asymmetry and higher superior orbital rims of the affected side in 5 patients. Conclusions: Ophthalmologic examination may be mandatory for patients with fibrous dysplasia involving the orbit, especially to prevent optic neuropathy. If optic atrophy, strabismus or exophthalmos is found in patients with facial asymmetry, the possibility of fibrous dysplasia must be considered.

영양사들이 생각하는 닭고기 등급판정

김남주,Kim, Nam-Ju 한국계육협회 2007 월간 닭고기 Vol.142 No.-

눈꺼풀결막에 발생한 점막표피암

김남주,곽상인,Nam Ju Kim,Sang In Khwarg 대한안과학회 2006 대한안과학회지 Vol.47 No.10

Purpose: We report our experience with a case of a nodular lesion of the lower palpebral conjunctiva with histologic features consistent with mucoepidermoid carcinoma. Methods: A 72 year-old man presented with a left lower palpebral conjunctiva lesion. 3X3 mm sized flat pedunculated yellowish red mass was observed. Incisional biopsy proved the mass a mucoepidermoid carcinoma and wide local resection was conducted. Results: Hematoxylin and eosin-stained sections showed lobules of tumor cells, consisting of predominantly epidermoid cells and scattered islands of mucin-secreting cells. Mucicarmine-stained sections demonstrated strong positivity, consistent with the diagnosis of mucoepidermoid carcinoma. Conclusions: In any case presenting palpebral conjunctival lesion, mucoepidermoid carcinoma should be differentiated, and it is necessary to confirm the diagnosis through biopsy.

아래눈꺼풀결막의 덧눈물샘에서 발생한 양성혼합종 1예

김남주,정호경,곽상인,Nam Ju Kim,Ho Kyung Choung,Sang In Khwarg 대한안과학회 2006 대한안과학회지 Vol.47 No.10

Purpose: Benign mixed tumor of the accessory lacrimal gland is a very rare neoplasm, with only one case with presumed origin of Wolfring`s gland in domestic literature. We report our experience with a case of a nodular lesion of the lateral lower eyelid which is completely excised and histologically diagnosed as benign mixed tumor from Krause`s gland. Methods: A 68 year-old woman presented with 1 cm-sized subcutaneous mass in right lateral lower eyelid. A hard non-tender movable mass was palpated. After 6 months of observation, the mass was excised through subciliary skin incision. Results: The mass was located deep to the subcutaneous tissue, inferior to lower border of tarsal plate, and was adherent to inferior forniceal conjunctiva. Round 1.2 cm-sized yellow-pink mass was completely excised. Histologic examination showed many glandular elements embedded in a myxoid ground substance, and glandular structures were composed of two layers of inner cuboidal and outer polygonal cell. It was diagnosed as benign mixed tumor from accessory lacrimal gland of Krause. Conclusions: In any case presenting lower eyelid mass lesion, benign mixed tumor of accessory lacrimal gland should be considered as one of the differential diagnosis.

도보접근거리분포 및 주택가격변화에 따른 지하철 역세권의 범위 설정에 관한 연구

김남주(Kim, Nam-Ju) 대한국토·도시계획학회 2012 國土計劃 Vol.47 No.6

모바일 커뮤니케이션 서비스 디자인

김남주(Kim Nam-Ju),스나가 타케시(Sunaga Takeshi) 한국디자인학회 2006 한국디자인학회 학술발표대회 논문집 Vol.- No.-

중숙련(middle-skill) 일자리의 감소가 고용 없는 경기회복에 미치는 영향에 관한 연구

김남주 ( Nam Ju Kim ) 한국노동경제학회 2015 勞動經濟論集 Vol.38 No.3

본 논문은 노동시장의 숙련도별 일자리 구조를 Autor-Dorn의 직업-숙련도 분류시스템을 준용·분석하여 중숙련 일자리의 감소와 함께 고·저숙련 일자리가 동시에 증가하는 양극화 현상이 뚜렷함을 확인하였다. 동 현상은 근로자의 산업간 이동 요인이 크고 노령근로자가 중·저숙련 일자리로 밀려나고 있다는 독특한 특징을 나타냈으며, 추세적 경향과 함께 경기수축기에 가속화되는 경기변동성 또한 가지고 있었다. 따라서 이러한 중숙련 일자리의 감소 속도가 지금보다 현저히 완화되는 경우 고용 없는 경기회복의 모습도 상당히 개선될 수 있음을 알 수 있었다. This paper first constructs an occupation code-skill match for the Korean labor market by following Autor-Dorn classification on the tasks framework. Over the last 34 years, middle-skill jobs have vanished enormously, while high-skill and low-skill jobs have both increased. Also, jobs have polarized more rapidly in recessions and changed uniquely by pushing old workers into middle and low-skilled jobs and the inter-sector reallocation of workers. Furthermore, jobless recoveries in the recent business cycle could have been alleviated considerably if job polarization had been mitigated.