Among the industrial disasters caused by drop, ladder related drop disasters are occurred the mostly. The victims are occurred continuously. This study analyzed current situation of industrial disasters for recent 10 years(2005~2014) and compared・analyzed statistics of death disasters of ladder by workplace scale, age, occupation, employment type, working content, scarred area, etc. in detail. This study suggested direction of safety standard modification for ladder that is an original cause material of many drops, direction of safety training strengthening of small-scaled workplace, and safety model based on disaster statistics and should contribute to reduction of disaster rate for ladder working.
디스플레이 기술이 다양한 상품으로 점차 발전함에 따라 소비자가 선호하는 디스플레이 유형을 선택할 수 있는 효과적이고 객관적인 비교 평가 방법이 필요하다. 그러나 객관적이고 주관적인 디스플레이 품질 평가 방법은 디스플레이가 상이한 특성을 가지므로 다양한 디스플레이에서 일반적으로 유사하지 않다. 이에, 본 논문은 상대적으로 특성이 서로 다른 디스플레이의 인지 화질 평가를 위해 분석 네트워크 프로세스 (ANP)를 사용하여 이들 디스플레이의 상대적 화질 을 평가할 수 있는 체계적인 시스템을 제안한다. 제안된 평가 방법의 검증은 4 개의 모바일 디스플레이를 사용하여 평가 되었고, 주관적 평가와 제안한 방법의 선호도가 일치함을 보였다.
Base isolation system is generally used for low-rise buildings. For high-rise buildings subjected to earthquake loads, a mid-story isolation system was proposed and applied to practical engineering. In this study, seismic responses of high-rise buildings considering the installation story of the mid-story isolation system were evaluated. To do this, the 20-story and 30-story building were used as example structures. Historical earthquakes such as Kobe (1995), Northridge (1994) and Loma Prieta (1989) earthquakes were employed applied as earthquake excitations. The installation location of the mid-story isolation system was changed from the bottom of the 1st floor to the bottom of the top floor. The seismic responses of the example building were investigated by changing the location of the isolation layer. Based on the analytical results, when the seismic isolation system is applied, story drift ratio and acceleration response are reduced compared to the case without the isolation system. When the isolation layer is located on the lower part of the building, it is most effective. However, in that case, the possibility that the structure is unstable increases. Therefore, an engineer should consider both structural efficiency and safety when a mid-story isolation system for a high-rise building is designed.
DMSP OLS 영상은 도시의 가로등과 건물과 같은 인공조명시설로부터 방출되는 야간 빛 에너지 세기 정보를 제공하는 것으로 알려져 있다. 이 자료는 대상 지역의 시가화 건조지역의 면적과 공간 범위를 추정하는 연구에 활용되어왔다. 본 연구는 DMSP OLS 연간 영상자료를 활용하여 중국 랴오닝 성의 시가지의 시계열 변화, 도시개발의 특성, 그리고 도시개발의 방향성을 분석하였다. 본 연구의 결과에 따르면, 야간 인공위성 영상에서 도출된 랴오닝 성 시가지의 공간적 확산은 이성의 경제수준을 향상시키기 위한 경제발전 정책을 잘 반영하였다. 선양과 다롄 등 대도시는 지속적인 도시 성장을 경험하고 있으나, 대부분의 도시들은 최근에 이르러 도시개발이 이루어진 것을 알 수 있었다. 선양, 안산, 다롄 등 랴오닝 성의 대도시는 북동-남서 방향의 축 선상에 위치한다. 이러한 도시발달 축은 연도별 시가화 중심점의 공간 분포에서도 확인되었다. 이와 같은 결과에 따르면, DMSP OLS 영상자료는 도시화 관련 연구를 수행하기 위한 공간적 대안 자료로서 활용 가능성이 클 것으로 기대된다.
PURPOSES : So far, aged cement concrete pavement on express highways has been rehabilitated mainly with asphalt concrete inlay. However, potholes were the major problem, and they shortened the life of the inlay mainly owing to the poor drainage of water once it infiltrated the interface of the concrete and asphalt. The purpose of this study is to compare the performance and economic efficiency of asphalt overlay and inlayMETHODS: Overlay and inlay were compared through accelerated pavement testing, and a life-cycle cost analysis was conducted in this study using the CA4PRS program.RESULTS and CONCLUSIONS : It was found from accelerated pavement testing that the overlay exhibited reflective crack resistance that was more than twice as effective as that of inlay. The total cost (construction cost + user cost) within the analysis period (20 years) of the overlay was 37% lower than that of the inlay.
For evaluating equations of bursting force in different codes, comparative study of the formulas was conducted. Because the equations does not consider variables such as shape of anchorages, angle of tendons, and eccentricity, a relation between the bursting forces and the variables has to be analyzed. In this paper, therefore, a comparative analysis of bursting forces computed by equations in the codes and finite element analysis was performed. As a result, it could be figured out that bursting force equations in the local zone were determined by coefficient k.
This paper aims at finding some lessons applicable to successful implementation of ‘The 3D Printing R/D Project’ through both examining the process of adopting overseas industrialized housing production technological knowhow by home builders during the 1970's~1980's period and thereafter until now the various efforts to adjust the technologies efficiently to the Korea‘s unique situation. Some meaningful lessons can be summarized as follows; Ⅰ) Deep understanding of 3DP technological know-why along with its inheritance, Ⅱ) Readjusting of R/D period and goals(cf. Global leader Winsun's 15 years experiment), Ⅲ) Restructuring for more collaborative R/D B&E system among participating researchers Ⅳ) Fostering 3DP expert-engineers and technicians from the early stage, Ⅴ) Clearing legal barriers in users' adopting 3DP methods necessary, Ⅵ) Development of appropriate building material besides concrete. Therefore, it is highly recommended that the above-mentioned 6 lessons positively accepted and applied to the Research Implementation Plan in due course, especially by KICT consortium and KAIA under the guidance of Ministry of Land, Infrastructure and Transport.
본 연구는 영아와 대상 영아의 어머니를 대상으로 하여 어머니의 심리적 안녕감과 양육행동, 영아의 정서지능 간의 관계를 살펴보고, 어머니의 심리적 안녕감이 양육행동을 통해 영아의 정서지능에 영향을 미치는 경로를 분석하고 나아가 어머니의 심리적 안녕감과 영아의 정서 지능 간에 어머니의 양육행동이 매개효과를 하는지 분석하였다. 본 연구에서는 서울지역의 어린이집에 재원 중인 영아와 대상 영아의 어머니 211명이 참여하였다. 본 연구결과를 살펴보면 첫째, 어머니의 심리적 안녕감과 양육행동, 영아의 정서지능 간의 경로를 분석하기 위해 구조 모형을 분석한 결과 어머니의 심리적 안녕감과 양육행동, 영아의 정서지능 간에 유의미한 경로가 나타났다. 둘째, 어머니의 심리적 안녕감이 양육행동, 영아의 정서지능에 미치는 효과를 살펴보고 간접효과를 검증한 결과, 어머니의 심리적 안녕감과 영아의 정서지능 사이에 어머니의 양육행동이 매개효과가 있으며 통계적으로 유의미하였다. 이를 통하여 어머니의 양육행동에 영향을 미치는 심리적 안녕감과 같은 변인에 대한 중요성과 새로운 관점을 제공하여 부모 교육에 이론적 기초자료를 제공할 수 있으리라 기대한다.
PURPOSES : The purpose of this study is to investigate the stresses of the middle slab in a double-deck tunnel owing to the slab lift to replace the underlying elastic pads during maintenance workMETHODS: The middle slab was divided into three different sections: typical section, expansion joint section, and emergency passageway section. Finite element analysis models of these three sections of middle slab were developed, and the stress distribution and maximum stresses were obtained using the models when the middle slab was lifted to replace the underlying elastic pads. Various slab lifting methods were examined in this study such as one-, two-, and multiple-point lifts, distributed lifts, and one or both slab side edge lifts.RESULTS: When the slab side edge is lifted, the longitudinal stresses of the slab are almost the same as the principal stresses. This implies that the governing stresses are the longitudinal stresses. The maximum stresses with both-edge lifts are generally smaller than those with one-edge lifts at all three sections of middle slab.CONCLUSIONS: If the middle slab in a double-deck tunnel is lifted for maintenance, the slab should be lifted at multiple points along the longitudinal direction to reduce the tensile stresses.
‘Consulting’, which is the main research topic of the knowledge service industry, is a field of study that is essential for the growth and development of companies and proliferation to specialized fields. However, it is difficult to grasp the current status of international research related to consulting, mainly on which topics are being studied, and what are the latest research topics. The purpose of this study is to analyze the research trends of academic research related to ‘consulting’ by applying quantitative analysis such as topic modeling and statistic analysis. In this study, we collected statistical data related to consulting in the Scopus DB of Elsevier, which is a representative academic database, and conducted a quantitative analysis on 15,888 documents. We scientifically analyzed the research trends related to consulting based on the bibliographic data of academic research published all over the world. Specifically, the trends of the number of articles published in the major countries including Korea, the author key word trend, and the research topic trend were compared by country and year. This study is significant in that it presents the result of quantitative analysis based on bibliographic data in the academic DB in order to scientifically analyze the trend of academic research related to consulting. Especially, it is meaningful that the traditional frequency-based quantitative bibliographic analysis method and the text mining (topic modeling) technique are used together and analyzed. The results of this study can be used as a tool to guide the direction of research in consulting field. It is expected that it will help to predict the promising field, changes and trends of consulting industry related research through the trend analysis.
The purposes of this study are to analyze risks of construction step BIM(Building Information Modeling) applied project and improve it. Recently, construction industry has emphasized an importance of BIM for efficient utilization of various information. In the whole life cycle of huge construction project, there are cases introducing BIM and projects applying BIM are gradually increased to the work of construction step. However, the process of communication is not established, so the contents of BIM process of construction step are just showing rough fields and concepts of working utilization, so it's restrictive to utilize BIM actively on constructions step. Through results of case study in this research, constructor risks of BIM business should be efficiently treated with Fuzzy-FMEA that is more precise than existing danger evaluation.
One of the reasons why Louis I. Kahn is regarded as a pioneer of Post-Modern Architecture is that his works are interpreted as Structuralism and Post-structuralism in architecture. A. Lüchinger’s interpretation of Structuralism and M. Benedikt’s interpretation of Post-structuralism; especially Deconstruction Theory, in Kahn’s architecture must be proper cases for understanding this context. However, when we precisely analyze their insistence, several fallacies can be found with their incomplete grasp of Kahn’s architectural thinking. The most problematic thing is that they maximize fallibility with focusing only on the analysis of superficial phenomenon, such as formal composition, disposition of space, decorative features, and so on. Therefore, the meaning of architectural essence toward Post-Modern Architecture which Kahn had pursued during his lifetime is sometimes misinterpreted. For this reason, this paper attempt to reanalyze Kahn’s philosophy of architecture deeply with the view of aesthetics which has a key role in both overcoming their fallacies and illuminating the potentiality of Kahn’s architecture.
As the competitiveness of SMEs (small and medium enterprises) is getting more and more improved and globalized, the government provides various consulting services to secure the competitiveness of small and medium firms and support stable growth. However, the assessment of the result from the government’s support is generally focused on non-financial factors, such as customer satisfaction and analysis of improvement effect. This paper is in regards to the statistical analysis of how much the government’s support in the form of providing consulting services contributes to financial outcomes in terms of profitability and growth. ROA (return on asset) and ROS (return on sales), which are investment profitability and sales profitability respectively, are chosen as an indicator of profitability. For analysis of growth, sales revenue and total asset growth are used. The samples are 44 corporations which are supported by government, and 150 corporations which are selected for comparison, with corporate growth support center program by the Ministry of Trade, Industry, and Energy chosen as the consulting model. After gathering the yearly balance sheets and income statements of the samples from CRETOP, Korea Enterprise Data, the analysis is conducted in the way of identifying the statistical significance of financial difference in the same period between corporates taking consulting services and corporates which have not, and the difference of financial outcomes from the corporates taking consulting services before and after consulting services. As a result, in terms of business growth, it is turned out to have positive difference both in growth ratio and profitability compared to the compared corporations at the significant level. Therefore, it is obvious that the consulting program which government provides to SMEs have direct influence practically to the corporates’ management performance.
본 연구는 강의개선을 위한 다양한 노력들이 교수자의 교육효과성을 높이는데 긍정적인 관계성을 가질 것 인가를 분석하고 교육의 질을 관리하기 위한 대학의 노력이 향후 어떠한 방향성을 가져야 할 것인가에 관한 제언을 제공하는 것을 목적으로 한다. 연구목적의 달성을 위한 강의개선 노력에 따라 강의평점이 어떻게 달라지는가에 관한 차이의 분석과 그 영향력의 분석을 실시하였으며, 이에 따른 연구결과는 다음과 같다. 첫째, 강의개선 노력 중 교수법 특강의 참여빈도가 높을수록 교수자의 강의평점이 높게 나타났으며, 수업컨 설팅은 그 차이값이 유의하지 않았다. 둘째, 강의개선 프로그램인 교수법 특강, 수업컨설팅, 교과목 CQI보 고서에 참여한 강의평점 상위30%집단과 하위30%집단의 강의평점 변화양상을 살펴본 결과 2015학년도에 비해 2016학년도에 강의평점이 향상되었으며, 특히 하위30%집단의 교원들은 더욱 큰 폭의 강의평점 향상을 보이는 것으로 나타났다. 이러한 결과를 통해 본 연구는 강의개선에 있어 의무적 참여제도 교육효과성에 긍정적인 영향을 미치므로, 교수자들이 의무적 참여와 자율적 참여를 고루 수행할 수 있도록 대학의 지원이 필요하며, 교수자들의 요구와 조직문화에 관한 세밀한 분석을 통해 모든 대학이 실시하는 강의개선 프로그 램이 아닌 대학의 특성을 반영한 다양한 형태의 강의개선 프로그램의 개발과 실시의 노력이 이루어져야 함 을 제언하였다.
본 연구는 숲가꾸기 사업 담당공무원의 동 사업에 대한 인식 분석을 통해 향후 정책적 개선방안 수립의 기초자료를 제공하기 위해 2015년 10월 설문조사 방식으로 수행되었다. 2년 이상 담당자의 교육 이수 여 부에서 산림조합 훈련원 교육과 산림청 시책교육 참여가 가장 높게 나타났다. 숲가꾸기 사업 담당자들은 숲가꾸기 사업의 규모, 업무비중, 만족도에 대해서는 부정적으로 응답하는 비율이 더 높게 나타났다. 숲가 꾸기 사업 품질향상을 위해 2년 미만 담당자는 관계공무원의 역량 강화와 산림사업 전문가 양성을, 2년 이상 담당자는 시공자의 운선순위가 높았고, 설계․감리 강화가 필요하다고 응답하였다. 산주들에게 숲가꾸 기 사업을 충분히 설명하는지에 대해서는 2년 미만은 12%, 2년 이상은 27%가 부족하다고 응답하여 담당 자들간에 유의적인 차이가 있었으며, 부족한 주된 원인으로는 산주들의 무관심 때문이라고 응답하였다. 경력과 관계없이 숲가꾸기 사업 담당자는 산림의 기능별 구분이 비현실적이기 때문에 기능별 숲가꾸기 사 업이 불필요하다고 응답한 비율이 높게 나타났다.
In 1970, Masahiro Mori proposed the uncanny valley concept. At the time, the proposal aroused little reaction, However, the uncanny valley is just a hypothesis, not a strict theory. Many subsequent studies have shown that it is true that the uncanny valley is reasonable; With the development of game consoles and personal computers, uncanny valley in video games will become more and more common. but, for the time being, special introductions and game related research on the uncanny valley are still very rare. In this paper, with Masahiro Mori’s uncanny valley as a benchmark and using the evolution of Tomb Raider’s Lara Croft over 20 years as an example, we analyze the significance of the uncanny valley in the design of realistic adventure game characters from such aspects as facial expression and texture. It's not easy to see the development of the technology in the game by using this approach. And it makes game makers determinate the scope of uncanny valley more exactly to made better games.
본 연구는 한류 콘텐츠 소비 시 나타나는 한국, 일본, 미국의 감정 반응을 통해 국가별 소비 성향을 규명하는 데 목적이 있다. 방대해진 텍스트 리뷰를 이용한 감정 분석 연구가 주목받고 있고, 콘텐츠 수요에 환경적 특성이 주요한 영향을 주고 있음에도, 국가별 감정 반응 차이에 대한 연구는 거의 이루어지지 않고 있다. 따라서 본 연구에서는, Russell(1980)이 제시한 감정 원형 모델을 사용하여 한국형 판타지 멜로드라마 <도깨비>에 대한 국가별 감정 단어의 변수 중요도 및 단어 간 연관을 비교하였다. 우선, 2017년 1월 26일부터 3월 26일까지 2달간의 텍스트 리뷰를 수집하였다. 둘째, 수집한 데이터로부터 Russell의 감정 모델에 해당하는 감정 단어를 선별하였다. 셋째, 선별한 데이터에 랜덤포레스트를 적용하여 변수 중요도를 평가하였다. 넷째, Russell 축에 따른 주요 감정 단어 간 연관성을 비교하였다. 마지막으로 테스트 데이터를 이용하여 학습된 모델의 정확성을 측정하였다. 실험 결과, 국가별 감정 단어의 변수 중요도에서 한국과 미국은 Happy, 일본은 Pleased가 가장 중요한 변수로 나타남을 확인하였다. 단어 간 연관성에서 한국은 수동적 불쾌감, 미국과 일본은 수동적 쾌감이 강하게 나타나는 경향이 있음을 확인하였다. 본 연구를 통해, 한류 콘텐츠에 대한 국가별 감정 반응 차이를 확인할 수 있을 것으로 기대한다.