Since 1990’s, many researches about ultra high performance concrete have been conducted. Compare to conventional concrete, it shows significantly high compressive and tensile strength so that leads to reduce the self weight of structures. However, the use of slender member may meet the buckling failure that is not common phenomenon in concrete structures so far. Most design codes have not suggested any provisions for buckling limit states and very few of researches have been conducted for buckling of concrete girders. In this study, a number of finite element analysis were carried out to investigate the buckling behavior of UHPC I-shaped girders.

문학지리학 연구의 관심 증가와 함께, 인터넷을 기반으로 한 지리정보 기술의 발전은 문학 작품의 지리정보 분석 및 서비스의 효율성을 증가시키고 있다. 이와 관련하여, 문학 작품에서 나타나는 지리적 사고와 내용에 대한 보다 심층적인 분석과 이를 기반으로 한 지리정보 기술의 적용에 대한 연구가 요구된다. 본 연구는 박지원의 ｢열하일기｣를 대상으로 인터넷 기반의 지리정보를 분석하고 서비스를 구현하고자 하였다. 이를 위해 박지원의 ｢열하일기｣에서 나타나는 지리적 사고와 내용을 5가지, 위치/영역, 지형, 기후, 지역지리, 영토/세계관을 중심으로 도출하였다. 그리고 이를 기반으로 Google Map, ArcGIS를 이용하여 6가지 주요 기능을 구현하 였는데, 이는 다양한 공간 스케일의 지도 조작 및 탐색, 2차원 및 3차원 지도 시각화 기능, Mashup 기능을 이용한 위치정보와 다양한 정보들의 결합, 고도 단면도 생성 및 분석, 이동거리 분석, 날씨 정보와 이동거리 정보의 시간 시각화, 역사지도와의 연계이다. 이러한 시도를 통해 문학 작품에 대한 보다 입체적, 다차원적인 지리적 이해를 높일 것으로 기대한다

인터넷과 스마트폰의 보급과 함께 사람들은 관심 있는 정보를 포털사이트에서 실시간으로 검색할 수 있게 되었다. 그에 따라 빅데이터가 비정형적으로 형성되고 이를 이용하기 위한 연구 분야가 발전하고 있다. 최근 식품분야 에서도 빅데이터를 활용한 연구의 필요성이 꾸준히 제기 되고 있다. 본 연구는 국내 최대 규모의 포털 사이트인 네이버의 검색 통계를 활용하여, 사람들의 연관 검색어 빈도에 따른 식품안전 사고 원인 식품과 식중독 원인 병원 체들의 관계를 분석하였다. 특히 식중독과 관련된 식품과 식중독 원인 병원체의 포털사이트 키워드 검색 건수와 해당 원인 식품 및 병원체의 뉴스검색 건수를 분석하였으며, 최종적으로 키워드 검색 건수와 실제 식중독 발생 시기의 상관관계를 분석하였다. 분석결과, 일반적으로 식중독 발생 직후 관련 키워드 검색 건수가 증가하는 것으로 나타 났으며, 특별하게 굴과 같은 계절성 식품의 경우 키워드 검색 건수 증가 이후에 식중독 사고가 발생한 것으로 나타났다. 따라서 본 연구결과를 통해 검색 건수가 증가하는 식중독 세균이나 식품들을 식중독 사전 예방적 차원의 정보로 활용할 수 있다면 식중독 사고 발생 가능성을 낮출 수 있을 것으로 사료된다.

The friction pendulum system(FPS) is a kind of seismic isolation devices for isolating structures from an earthquake. To analyze the effect of friction materials used in the friction pendulum system, fragility analysis of LNG tank with seismic isolation system was conducted. In this study, titanium dioxide(TiO2) nanoparticles were incorporated into polyvinylidene fluoride(PVDF) matrix to produce friction materials attached to the FPS. The base moment of the concrete outer tank and the acceleration of the structure were evaluated from different mixing ratios of constituents for the friction materials. The seismic fragility curves were developed based on two types of limit state. It is confirmed that evaluation of combined fragility curves with several limit states can be applied to select the optimum friction material satisfying the required performance of the FPS for various infrastructure.

All structures can not be perfect due to geometric or material initial imperfections. Initial imperfections are an important factor in determining the buckling mode and are known to be important factors in evaluating the actual buckling strength. The DNV-RP-C202 design standard limits the longitudinal stiffener spacing. However, the criteria for the stiffener spacing presented in DNV-RP-C202 is a guideline derived from the curved panel theory of perfect cross-sectional shape without initial imperfections. In this study, considering geometric initial imperfections, the transition point of stiffener spacing where longitudinal stiffeners affect the buckling strength of reinforced steel wind turbine tower is analyzed using finite element analysis program. The results of finite element analysis compared with theoretical results based on the perfect shape. As a result, a more reasonable stiffener spacing considering the initial imperfections was suggested.

Wind tower structure has relatively simple shape compared to other structures, but due to its characteristics, various and irregular environmental loads are applied. These loads cause vibrations at tower, and can cause failure of the structure if over vibration occurs. Vibration occurred at structures is gradually exhausted by damping of the structures, and if high damping is ensured, the failure of the structure due to over vibration can be prevented. In this study, the vibration reduction effects are to be analyzed through FEM analysis by examining the top displacement, bottom moment, and bottom fatigue damage of the structure depending on damping ratio of the wind tower structure.

The purpose of this study was to systematically analyze relevant research and examine research trends through metaanalysis of 154 theses related to native local foods published in a representative food and nutrition journal. As subject regions, Gyeongsang-do was the most common (70), and especially, Andong had 19 theses. Regarding the research topic, until the early 2000s, most research focused on ‘native local foods itself’. After 2005, there was a remarkable increase in research on people’s ‘perception/use’ of native local foods as well as on ‘development/application’ based on native local foods since 2010. Among theses on native local foods, there was a lot of research on ‘quality characteristics’ mainly using the quantitative research method, and most research was on desserts. Among theses on perception/use, there were lots of theses on ‘awareness, satisfaction, and preference’ focusing on questionnaires targeting local residents. Among theses on development/application, the noticeable research trend of ‘tourism commercialization of native local foods’ was the active development of food and menus using storytelling.

한국에서 말라리아는 1993년에 다시 등장했으며, 이후 증감을 반복하며 공간적 변화를 거듭하여 왔다. 지리 공간의 인문·자연·지리적 요인들은 복잡하게 상호작용하여 매개 모기의 생태와 말라리아 발생에 영향을 미친다. 본 연구는 말라리아의 발생 양상을 이해하고 이를 조절하는 데 기여하고자 그 공간적 패턴을 분석하였다. 본 연구는 Getis-Ord의 Gi* 와 평균 중심점을 이용하여 2001년부터 2014년 사이 말라리아 발생의 공간적 분포를 탐색적으로 분석하여, 그 시공간적 변화를 파악하였다. 또한 일반화 포아송 회귀모형을 이용하여 2001년, 2014년 말라리아에 영향을 미치는 인문·환경 요인을 비교·분석하고, 군사분계선으로부터의 거리 변수를 이용하여 그 공간적 자기상관을 설명하고자 하였다. 그 결과, 소 두수, 표준공시지가, 성비, 아파트 비율, 군사분계선 거리, 기후 요소, 논 비율이 말라리아 발생에 영향을 미치는 유의한 변수로 확인되었다.

21세기 정보화 사회에서 창의적이고 융합적인 교육이 강조되고 있다. 해외의 경우 창의융합 교육의 대표적 형태로 STEM (Science, Technology, Engineering & Mathematics) 교육이 강조되고 있으며, STEM교육의 한 요소로서 공간정보는 매우 중요하게 인지되고 있다. 공간정보의 중요성에 대한 인식은 미국, 영국 등 외국의 공간정보 구축 기관에서 K-12 수준에서 쉽게 활용할 수 있는 공간정보 기반 교육 서비스를 제공하도록 유도하였다. 우리나라에서도 창의융합 교육이 강조되고 있지만 공간정보가 일선 학교현장에서 활발히 사용되고 있지는 않다. 본 연구는 공간정보가 초, 중, 고등학교 수준에서 활발히 활용되도록 공간정보 구축 기관에서 마련해야 할 교육서비스 제공 방안에 초점을 두었다. 이를 위해 2장에서는 공간정보를 활용한 수업의 교육적 효과를 살펴보고, 3장에서는 300여명의 초, 중, 고등학교 교사를 대상으로 공간정보기반 교육 활성화를 위해 필요한 요구사항을 조사하였 으며, 4장에서는 공간정보기반 교육 서비스를 제공하는 해외사이트들을 분석하였다. 이를 토대로 공간정보 기반 교육서비스 제공 전략을 모색하였다.

This study investigates how the spatial recognition structure is emerging through the case of rectangular plan combined with a combination of Dang-Sil(堂室) and Gong(工) shape roof, and identifies a type of architecture in the early Joseon Dynasty that has never been revealed. The conclusion of this study is as follows. First, the Dang and the Sil are connected to each other, but the architectural elements such as pillars, frame, and windows are distinguished and appear as separate buildings. Second, the distinction between Dang and Sil is evident by the difference in the number of ridges and the shape of the roof. In addition, the roof and roof framework of the independent rooms and the rooms were common in the right angled architecture where the direction and the expandability of each structure were maintained. Third, the construction of the Dang-Sil combined structure, in which two or more structure frameworks were combined with the rectangular combined flat roof structure, gradually changed into a single structure with a single ridge. Fourth, this change means that people of the early Joseon Dynasty recognized the Dang and Sil as separate architecture, but the strict sense of spatial separation has disappeared over time.

This study was carried out to investigate the antioxidant activities and the contents of antioxidant compounds in extracts derived from 23 medicinal crops. Dried plant materials were extracted by 80% methanol and the extracts were used to experiment. The levels of total phenolic compounds were much higher in Oenothera biennis, Houttuynia cordata, Cedrela sinensis, Rhus javanica, Artemisia annua, Reynoutria sachalinensis, and Dendropanax morbifera compared with other crops. On the other hand, the total phenolic compound levels in Carthamus tinctorius, Polygonum multiflorus, Ginko biloba, Solanum nigrum, and Saposhnikovia divaricata were relatively low. The total flavonoid contents were highest in H. cordata, followed by D. morbifera, A. annua, A. continentalis and O. biennis. DPPH activity was significantly higher in A. annua, R. javanica, C. sinensis, D. morbifera and O. biennis, and ABTS activity was significantly higher in R. javanica, C. sinensis, O. biennis, R. sachalinensis, A. annua, and D. morbifera than other plants. These results suggest that O. biennis, A. annua, R. javanica, D. morbifera, and R. sachalinensis can be utilized as food additives and natural antioxidants due to their strong antioxidant activity.

Since 1995 the special act for safety management of public facilities have been enacted in Korea. Since then undergoing safety accidents great and small, legal system was revised several times for safety promotion. As part of its efforts Korea Infrastructure Safety & Technology Corporation have periodically evaluated the building safety inspection or diagnosis reports based on Special Act for Safety Control of Public Structures and published annual casebook. This study investigates and examines the cases of bad or poor reports until now. This paper aims at reasoning out the technical and institutional improvement plan for error-prone problems when safety inspection of buildings.

This study was conducted to provide basic data for establishing water pollution prevention for effluent water from soil and stone quarries and downstream river water by investigating waste water and sewage water processing, as well as the state of legislation related to grit chamber installation and water quality analysis. The pH and DO, BOD, T-P, Total coilform of effluent water and stream water showed higher than Ⅲ class but COD and SS, T-N showed less than Ⅲ class. In addition, concentration of BOD and COD, Turbidity were increased following deepened rainfall intensity. And therefore we devise systematic reduction facility and remedy for prevention of water pollution.

This paper aims to analyze the characteristics of the contemporary Chinese fashion market and the competitiveness of Korean fashion brands in China. Fashion professionals experienced in both the Korean and Chinese fashion markets participated to investigate the Shanghai market and consumers. The results of in-depth interviews show that Shanghai is the most favorable city among Tier 1 cities for Korean fashion brands planning on entering into the Chinese market. Shanghai consumers are open to international brands and highly prefer newness in fashion. Contemporary menswear was selected as a potentially big market due to the increase of unique, young, upper-middle-class male consumers. The Korean fashion brands’ strength is that they are capable of satisfying Shanghai consumers with excellent product planning and sensory design capabilities. Their disadvantage is that their brand recognition is weaker than that of global and international brands, and their ability to localize to the Chinese market is weak. The opportunity comes is from the Korean Wave, which is a positive for Korea's products and has good geographical access. The threat is that the Shanghai market is fiercely competitive; having access to many worldwide brands, and the competitiveness of Chinese brands is on the rise. To enter the Shanghai market, creative design ability, trendy product development, skill, and appropriate PR methods such as using Korean culture contents would be required to satisfy the young, powerful consumers in Shanghai.

The purpose of this study is to apply iconology to discover the symbolic system of imaginary animals focused on four representative auspicious animals in Korean folk paintings. Study methods included literature review of folk paintings, iconological analytics books, and articles. A total of 16 folk paintings of four auspicious animals in the Joseon Dynasty were analyzed using Panofsky's iconology. The four auspicious animals were Yong(dragon), Bonghwang(the eastern version of the phoenix), Shingoo (divine turtle), and Kirin(one-horned combination of a dragon and horse). According to iconological analysis, Yong is a typical symbol of royal authority, a deity of water as an object of respect with a remarkable talent of transformation, and in iconographical interpretation, represents reverence for transcendent power. Bonhwang is the symbol of a king, sun worship, the emblem of nobility and integrity, and in iconographical interpretation, the psychic bing in the sky. Shingoo is fortune prophecy, longevity and immortality, an envoy of deity, and according to iconographical interpretation, the organic view of the world. Kirin is a divine benign creature, a symbol of talent and honor, mediator between sky and earth, and in iconographical interpretation, an expression of Confucian ideology. This study produced three results. First, the four auspicious animals projected the human hope to overcome human limitations through divine creatures with mythical abilities. Second, they reflected everyday common hopes and values of pursuing fortunes and happiness. Third, the four auspicious animals' iconology was not independent of each other; it seemed to be common to and combined with each other.