• Industrial Engineering and Management Systems
• /
• 제13권2호
• /
• pp.163-171
• /
• 2014

Under amazing increase in markets and certain demand on qualified service in the delivery system, global logistic optimization is becoming a keen interest to provide an essential infrastructure coping with modern competitive prospects. As a key technology for such deployment, we have been engaged in the practical studies on vehicle routing problem (VRP) in terms of Weber model, and developed a hybrid approach of meta-heuristic methods and the graph algorithm of minimum cost flow problem. This paper extends such idea to multi-depot VRP so that we can give a more general framework available for various real world applications including those in green or low carbon logistics. We show the developed procedure can handle various types of problem, i.e., delivery, direct pickup, and drop by pickup problems in a common framework. Numerical experiments have been carried out to validate the effectiveness of the proposed method. Moreover, to enhance usability of the method, Google Maps API is applied to retrieve real distance data and visualize the numerical result on the map.

• Journal of the korean society of oceanography
• /
• 제31권2호
• /
• pp.43-54
• /
• 1996

Jinhae Bay, one of the largest tidal bays on the southern coast of Korea, is an area with thick accumulations of recent, fine-grained sediments, mainly supplied from the Nakdong River. The preponderance of silt and clay particles reflects the large quantity of sediments transported in suspension. Although the clay mineral assemblage is similar to that derived from the nearby Nakdong River, relatively high concentration (3-9%) of smectite suggests some local input of fine particles from several streams around the bay or some contribution from the offshore water that may be influenced by the Tsushima Current. The content of organic matters in sediments is as high as 12%, and their C/N ratios imply that they are comprised of mixtures derived from marine plankton and terrestrial plants. $^{210}Pb$ excess activity profiles of sediment cores yield an average sedimentation rate (a 100-year time scale) of about 2-5 mm/yr, which coincides well with the long-term sedimentation rate (a 1000-year time scale) estimated from the sediment isopach map. On the basis of sediment bulk density and sedimentation rate, an annual sink of mud in the bay is estimated approximately 1.0 ${\times}$ $10^{6}$ tons per year.

• 한국태양에너지학회 논문집
• /
• 제35권3호
• /
• pp.1-8
• /
• 2015

The MERRA reanalysis data provided online by NASA was applied to predict the monthly energy productions of Donghai Bridge Offshore wind farms in China. WindPRO and WindSim that are commercial software for wind farm design and energy prediction were used. For topography and roughness map, the contour line data from SRTM combined with roughness information were made and used. Predictions were made for 11 months from July, 2010 to May, 2011, and the results were compared with the actual electricity energy production presented in the CDM(Clean Development Mechanism)monitoring report of the wind farm. The results from the prediction programs were close to the actual electricity energy productions and the errors were within 4%.

• International Journal of Computer Science & Network Security
• /
• 제21권8호
• /
• pp.35-42
• /
• 2021

In the current context of digitalization of education, the use of modern methods and techniques of data analysis and processing in order to improve students' school results has a very important role. In our paper, we aimed to perform a comparative study of the classification performances of AdaBoost, SVM, Naive Bayes, Neural Network and kNN algorithms to classify the results obtained at the Baccalaureate by students from a college in Suceava, during 2012-2019. To evaluate the results we used the metrics: AUC, CA, F₁, Precision and Recall. The AdaBoost algorithm achieves incredible performance for classifying the results into two categories: promoted / rejected. Next in terms of performance is Naive Bayes with a score of 0.999 for the AUC metric. The Neural Network and kNN algorithms obtain scores of 0.998 and 0.996 for AUC, respectively. SVM shows poorer performance with the score 0.987 for AUC. With the help of the HeatMap and DataTable visualization tools we identified possible correlations between classification results and some characteristics of data.

• Journal of the Korean Wood Science and Technology
• /
• 제50권3호
• /
• pp.193-217
• /
• 2022

The Wooden Seated Amitabha Buddha Triad and Altarpiece have not been the subjects of definitive species identification and scientific analysis. In this study, visual investigation, portable X-ray fluorescence (p-XRF), species identification, and lacquer layer observations were carried out to determine the original materials and conservation status. Cracks, exfoliation and discoloration were detected during the visual investigation. The p-XRF data indicated that chrome oxide green, malachite, gold, cadmium red, cinnabar, minium, hematite, lead white, ink stick (Carbon), and copper were used for pigments and the coronet accessory. Tilia spp., Abies spp., and Pinus spp. were identified from both the Buddha Triad and Altarpiece. Finally, lacquer layer analyses of the base layer, lacquer layer, orange pigment layer, and gold leaf layer observed modern synthetic pigments likely used in previous conservation. As the Korean Cultural Heritage Charter and the International Charter for the Conservation and Restoration of Monuments and Sites clearly state that objects of cultural heritage must be conserved using their original materials, future conservation of these objects should utilize the data obtained in this study to employ traditional materials. Furthermore, a deterioration map diagnosis can be applied together with the obtained analysis data to understand the conservation status of and inform an appropriate and authentic conservation treatment for the Buddha Triad and Altarpiece.

• 한국IT서비스학회지
• /
• 제21권6호
• /
• pp.53-72
• /
• 2022

As a trend of modern service industry, self-service has been widely concerned by all walks of life, but there is a lack of literature on systematic management of the overall research in this field. Recently, people's lifestyle has been forced to change due to the influence of COVID-19, while there have been some changes in the field of self-service research. Based on the Web of Science data source, this study takes the literature of self-service field before and after the outbreak of COVID-19 as the research object, and summarizes the development process, research status and future research trend of self-service field through the Citespace visualization tool. The research shows that firstly, academic circles continue to be enthusiastic about self-service field research, cooperation between countries is becoming more and more diversified. Secondly, the communication between researchers is becoming more and more intensive, and the cooperation between different disciplines gradually becomes the mainstream. Third, related research gradually shifted to the practical application of technology, the research perspective gradually shifted from the initial traditional retail perspective industries such as tourism services. Finally, the role of customer experience and participation behavior in self-service process is gradually emphasized.

• 인삼문화
• /
• 제2권
• /
• pp.39-70
• /
• 2020

본고에서는 유래가 다른 상고사서의 상호 해석과 검증을 통하여, 위서(僞書)로 의심 받아 왔던 『부도지』, 『환단고기』, 『규원사화』의 기록이 논리적으로 실제 기록일 수 있음을 입증하였고, 『사기』 및 『열자』의 중국사서에도 등장하는 전설적인 '불로장생약'의 실체가 고려 인삼임을 밝혔다. 나아가 핵심 서적인 『부도지』의 인류이동 설명에 부합하는 Y 염색체 인류이동 지도를 참조하여, 각 인류 집단의 생활상을 기반으로 사상체질의 형성과 동남아인에 대한 고려인삼 열감문제의 기원이, 역사적 또는 과학적 관점에서 PPT유형 진세노사이드로 인한 체질문제로 추정하였다. 이 문제의 해결이 홍삼제조시의 PPT유형에 비하여 상대적으로 높은 함량의 PPD유형 진세노사이드 생산으로 해결되며, 또한 홍삼제조시 홍삼다당체의 함량 증가로, 홍삼다당체, PPD유형 진세노사이드, 원래 고려인삼에 다량 포함된 아르기닌에 의하여, 신체 내 '열충격단백질'의 발현이 증가되는 방법임을 설명함으로써, 고려 홍삼의 '아답토젠' 또는 '장생불사약'으로서의 효능을 과학적으로 해석할 수 있는 이론을 제시하였다. 마지막으로 미국삼(서양삼)과 고려인삼의 생육환경에 대한 고찰을 통하여, 그 차이점을 제시하였다.

• 한국전통조경학회지
• /
• 제39권4호
• /
• pp.24-37
• /
• 2021

본 연구는 대한제국과 그 전후의 시기를 중심으로 창덕궁 부용정과 주합루 권역의 원형 경관을 새롭게 조명하고, 향후 복원정비에 유용한 연구성과를 도출하기 위해 수행되었다. 연구 결과는 다음과 같이 요약할 수 있다. 첫째, 부용지 인공섬의 석축은 본래 정연하게 가공된 석재를 활용해 바른층쌓기로 조성되어 있었다. 하지만 1960~1970년대의 정비공사 과정에서 부용지 인공섬은 자연석과 가공석이 혼합된 형태로 변형되었다. 부용지 인공섬의 상부에 설치된 난간은 유사사례를 찾아보기 어려운 독특한 시설로 대한제국기에도 실존했지만, 일제강점기에 완전히 멸실되었다. 둘째, 오늘날 어수문 좌우에 남아 있는 취병은 2008년 조릿대를 기반으로 재현된 결과물이다. 어수문 취병의 식물 소재를 주목으로 보는 시각도 존재하지만, 구체적인 수종은 여전히 밝혀지지 않은 상태이다. 관련 자료와 정황을 다각적으로 고려하면 적어도 근대기의 어수문 취병은 동관왕묘와 경복궁 건청궁처럼 '향나무'로 제작되어 있었을 가능성이 높다. 셋째, 주합루 후원은 석계 형태의 구조물 위에 수목이 밀생하지 않은 공간이었다. 주합루 후원의 석계는 비교적 개방된 형태로 관리되면서 주변 건축물을 왕래할 수 있는 공간으로도 기능하였다. 하지만 1980년대 후반에 대규모 식재공사가 이루어지면서 주합루 후원은 화계와 같은 형태로 정비되었고, 다수의 화관목이 식재되어 폐쇄적인 공간으로 변모하였다. 넷째, 규장각과 개유와처럼 서고(書庫) 기능을 가졌던 영화당 남행각은 1900년대 후반 무렵에 멸실되어 본래 모습을 파악하기 어려운 건축물이었다. 본 연구에서는 근대기 사진과 스케치 자료를 토대로 영화당 남행각의 배치축을 확증하고, 형태와 의장적 특징을 확인하였다. 또한 기초자료 구축 차원에서 「동궐도」와 「동궐도형」을 참고한 추정복원도를 제시하였다.

• 한국전통조경학회지
• /
• 제31권2호
• /
• pp.82-91
• /
• 2013

본 연구는 서울시 성북구 성북동을 대상으로 근대 이후 문화재와 주변 경관 변화과정 및 원인을 사회 문화적인 측면에서 설명하고자 하였다. 이를 위해 1962년부터 2010년까지 사용한 폐쇄지적도를 이용하여 필지를 분석하고, 문헌자료를 참고하여 연구하였다. 시대별 변화과정 확인이 가능한 성락원, 마포최사영고택, 서울선잠단지, 서울한양도성을 위주로 변화과정을 추적하였으며, 문화재의 소경관(素景觀)을 검토하고 필지 변화와 함께 경관변천을 분석하였다. 성락원은 1954년에 송석정과 연못이 조성된 모습을 소경관이라 볼 수 있으며, 마포최사영고택은 2003년 이후 성북동으로 이전 복원한 것, 서울선잠단지는 1960년대 개발로 현재의 터만 남게 된 모습을, 서울한양도성은 숙종30년에 석성으로 개축한 것을 각 문화재의 소경관으로 정의하였다. 성락원은 제도적 요인에 의해 변화가 생겼고, 마포최사영고택과 주변 경관은 사회경제적 요인에 의해 변화가 생겼으며, 서울 선잠단지와 그 주변은 사회경제적 제도적 요인에 의해, 서울한양도성과 그 주변은 기술적 제도적 요인에 의해 변화가 생겼다고 볼 수 있다. 이처럼 성북동의 문화재와 그 주변경관은 대체로 제도적 요인과 사회경제적 요인에 의해 변화가 생기는 것을 알 수 있었다. 근대 이후 서울의 도시계획이 성북동에도 영향을 미쳤으리라 예상되며, 자본주의 경제체제 확립이 그 배경이 된 것이라 판단된다. 따라서 문화자원으로서의 잠재적 가치를 인식한 바람직한 경관변화가 이루어지길 기대한다.

• International Journal of Computer Science & Network Security
• /
• 제22권7호
• /
• pp.451-458
• /
• 2022

This article is devoted to the problem of national and patriotic education of young students by means of digital technologies in the conditions of distance learning environment. It is emphasized that national and patriotic education is a powerful means of strengthening the unity and integrity of Ukraine. It is proved that national and patriotic education will be effective under the condition of systematic and purposeful activity on formation of patriotic consciousness in youth, sense of national dignity, necessity of service of ideals and values of the country. Various forms of educational work of national and patriotic orientation at Pavlo Tychyna Uman State Pedagogical University, which were conducted by digital technologies: online thematic lectures, educational classes, round tables, workshops, guest online meetings with famous researchers of historical heritage of Ukraine, online tours of historical places, virtual exhibitions of art, participation in the national-patriotic student camp "Diia" (Action) and etc. The activity of the University Library and V. O. Sukhomlinsky State Scientific and Pedagogical Library of Ukraine of the National Academy of Pedagogical Sciences of Ukraine, which has a significant impact on the formation of national consciousness and social and political activity of students by modern means of information and communication technologies. It is determined that the project "Inclusive 3D map" helps to broaden the horizons and deepen the knowledge of young students, education of a true citizen, the formation of cognitive interest in the subjects studied, motivation to study, raising awareness of Ukrainians on historical and cultural heritage. The study showed that young students take an active social attitude: they speak Ukrainian, want to live and work in Ukraine, respect their homeland, its traditions, cultural and historical past, love to travel and they are tolerant of people with special needs. Promising areas of educational work with students based on the use of a wide range of information and communication technologies, namely 3D games, TV tandems, podcasts, social networks, video resources in national and patriotic education of youth.