• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.276-292
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• 2018

This study was conducted to investigate the trends in domestic and international disaster-related research through a systematic review of the literature and to establish a basis for future disaster-related countermeasures and development directions. A related literature search was conducted through the domestic and foreign databases through the combination of disaster-related terms from 2000 until February 28, 2017, and 79 articles were used in the analysis based on selection and exclusion criteria of 177 total documents. As a result of the research, 31.6% of disaster research type was quantitative studies, and 29.1% of the major disciplines were medical research. In addition, there were engineering(18.9%), public administration(13.9%), and nursing(11.4%). In foreign literature, there are many triage studies for the classification of patients in multiple lesions. On the other hand, only 30.4% of total triage studies in Korea were detected. Most of them were related to triage development, triage evaluation, triage research, and reviews. In addition, according to the disaster nursing capacity framework of the International Council of Nurses, 72.3% of studies were related to the response phase. Future research on disasters requires interdisciplinary convergence, patient classification, and technology integration to improve the survival rate of multiple injuries, and an integrated system based on the results of collaborative research among interdisciplinary groups is needed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.8
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• pp.1055-1060
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• 2018

In the wake of the 4th Industrial Revolution, the problem of career education in schools has become a big issue. While various studies are being conducted on services or technologies to effectively handle artificial intelligence and big data, in the field of education, data on students is simply processed. Therefore, in this paper, we are going to design and present career prediction programs for students using artificial intelligence and big data. Using observational data from students at the institute, the decision tree is constructed with the C4.5 algorithm known to be most intelligent and effective in the decision tree and is used to predict students' path of hope. As a result, the coefficient of kappa exceeded 0.7 and showed a fairly low average error of 0.1 degrees. As shown in this study, a number of studies and data will be deployed to help guide students in their consultation and to provide them with classroom attitudes and directions.

• Journal of Internet of Things and Convergence
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• v.10 no.2
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• pp.17-23
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• 2024

Losses in domestic water supply due to leaks are very large, such as fractures and defects in pipelines. Therefore, preventive measures to prevent water leakage are necessary. We propose the development of a leakage detection sensor utilizing vibration sensors and present an optimal leakage detection algorithm leveraging artificial intelligence. Vibrational sound data acquired from water pipelines undergo a preprocessing stage using FFT (Fast Fourier Transform), followed by leakage classification using an optimized tree-based boosting algorithm. Applying this method to approximately 260,000 experimental data points from various real-world scenarios resulted in a 97% accuracy, a 4% improvement over existing SVM(Support Vector Machine) methods. The processing speed also increased approximately 80 times, confirming its suitability for edge device applications.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.11
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• pp.1205-1216
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• 2015

Since concentration of greenhouse gas increases continuously from human's fossil fuel use, urbanization, and cultivation, it is trend that climate change is appearing. In Addition, in 20th century, occurrence of disaster is accidental and huge, and damage level also increases gradually. Therefore, in order to preserve the territory and to protect people's life and property against new type disasters, disaster detection satellite (payloads) development is required urgently. In this paper, we conduct a research and development for the prompt preemptive action when occurred a disaster, in particularly, about the disaster observation optimized at Korea's geographical features for the irregular future disasters. For the payload design which is specialized detect disasters, we create a tech tree of satellite imagery applications based 10 disaster types, and analyze the satellite sensor technologies referred to Landsat-8, Worldview-3 and ALOS-2.

• Proceedings of the Korean Society for Information Management Conference
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• 1994.12a
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• pp.129-132
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• 1994

DOC 20판에서는 보조표 활용을 위하여 다양한 형태의 주기(Note)가 여러 곳에 마련되어 있다. 이 주기는 새로운 학문들이 이전판의 분류체재와의 중복성을 극복하고, 정확한 문헌분류를 위한 중요한 문법규칙들을 포함하고 있다. 그러나. 기술된 주기의 다양성이 제대로 정리되어 있지 않아서 이 주기의 활용은 미흡한 실정이다. 따라서, 본 연구는 DDC 20판의 보조표 T1(표준세분표: Standard Subdivisions) 및 T2(지리, 시대, 인물 구분표: Geographic Areas, Historical Periods, Persons)에 대안 이용주기를 통계적 빈도수를 고려하여 분석하고, 분석된 주기를 유형별로 분류하여 각 유형별 분류기호 생성 문법을 마련하였으며, 분류기호 생성 문법을 유도트리(Derivation tree)를 활용하여 정확한 분류과정을 예시하고, 이를 자동분류시스템으로 활용할 수 있는 분류진원 전문가시스템 모형을 설계하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.69-72
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• 2018

국내 뿐 아니라 세계적으로 디지털 기반의 공유경제 서비스와 관리에 대하여 많은 관심을 두고 있다. 공유경제로 인하여 새로운 경제패러다임으로 높은 가능성이 있고 정부와 시민이 편익차원에서 많은 예산 절감이 가능하기 때문이다. 우버, 에어 비엔비 등의 사업이 활성화 되고 있는 상황에서 디지털 콘텐츠 역시 활용 공유 가능한 재화로써 공유경제에 참여하고 신뢰기반의 효과적 거래가 가능하다. 이 논문에서는 디지털 콘텐츠를 공유경제로 활용함에 있어 위 변조 및 해킹 가능성을 줄이고 투명한 거래가 가능하여 디지털 콘텐츠의 유통이 활성화 될 수 있는 방법으로 블록체인 활용기법을 제안하였다. 스마트 유통과정에서 이더리움의 스마트 컨트랙트 방법을 적용하고 디지털 콘텐츠 저작권을 보호하기 위한 머클트리 해싱방법과 암호화방법을 수정함으로써 디지털 콘텐츠가 공유경제로써 발돋움하고 활성화될 수 있을 것이다.

• 대한공업교육학회지
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• v.31 no.2
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• pp.203-232
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• 2006

The purposes of this study are to examine the effects of learning, which was applied TRIZ's 40 inventive principles, on the improvement of learners' creativity and to offer basic information that would be necessary to study on Inventive Education in Technology Education. In order to achieve the purposes, objects were divided into two groups, experiment group(74 students) and control group(67 students), who were from B Middle school in Daejeon. Creativity Self-Assessment and Student Inventive Rating Scale were used as tools for research so that we could find the homogeneity in two groups. An applied design method was nonequivalent control group pretest-posttest design. This study was performed for 2 hours on the 1st and the 3rd Saturday in every month from the 3rd week of March, 2006 to the 3rd of July of 2006, and total researching period was 9 weeks. In that time, the students were required to learn 40 inventive principles. The results from this study are as below. (1) Applying TRIZ's 40 inventive principles had a positive effect on students' CQ(creative quotient), as influencing on the subordinate factors of creativity, such as, originality, germinal, trasformational, value, attraction, expressive power and organic systemicity. However it didn't have any effect on adequateness, properness, merit, complex and elegance. (2) Applying TRIZ's 40 inventive principles had a significant effect neither on CQ by sex, nor on the subordinate factors of creativity, except for originality and expressive power. Based on the results of the experiment, below suggestions were made to promote the application of TRIZ's 40 inventive principles to Technology Education. (1) Although this study was performed by using development activities, it is necessary to study more systemically to apply 40 inventive principles to regular subject in Technology Education. (2) As creativity was very important in Technology Education, there should be studies on the various types of inventive principles and techniques for Inventive Education in Technology Education.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.171-173
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• 1998

변환 방식의 기계 번역 시스템에서 구조 변환은 번역의 품질을 결정하는 중요한 요소이다. 각 번역 시스템들은 이러한 구조 변환을 수행하기 위해 특별한 기법을 사용한다. 구조 변환을 수행하는 방안으로는 어휘 사전에 기술된 구조 변환 정보를 이용하는 방법, 변환 엔진에 언어 현상별 구조 변환 규칙을 프로그래밍하는 방법, 스크립트 언어를 이용하여 구조 변환 규칙을 기술하는 방법이 있다. 이 논문에서는 스크립트 형식의 범용 문법 기술 언어(Grammar Writing Language)를 제안한다. 이 논문에서 제안하는 문법 기술 언어는 규칙 기술을 용이하게 하기 위해 다양한 연산자와 기본 함수를 제공하며, 그 적용 대상에 따라 컴파일러 버전과 인터프리터 버전을 선택적으로 사용할 수 있다. 문법 기술 언어는 영한 기계번역의 변환 모듈뿐만 아니라 한영 변환 등의 트리 구조 변환을 요하는 다양한 응용 분야에 활용할 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.3
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• pp.94-100
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• 2021

To improve the productivity of cargo containment construction for a membrane LNG carrier, it is important to shorten the installation period and process of the scaffolding system, which is a construction workbench of a cargo containment for a membrane LNG carrier. As an effective method, opinions are being gathered to enlarge the lifting unit from the existing two stages to eight stages. On the other hand, the stresses around the pin and hole will increase significantly because of the increase in lifting load according to the large size of the module. The purpose of this study was to establish a new large module-lifting plan by introducing TRIZ to solve these problems. This study adopted a method to utilize 40 inventive principles, which is one of the various problem-solving tools of TRIZ. First, technical contradictions were derived, the engineering parameters were selected. Second, efficient inventive principles were selected to overcome the technical contradictions using a contradiction matrix. Finally, the general and specific solutions were derived through the selected inventive principle, and structural analysis confirmed that the stress generated in the structure was low. The utility of TRIZ was confirmed by the successful lifting of large modules using the established lifting method.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.2
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• pp.239-250
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• 2022

LoRa is a physical layer technology designed to secure highly reliable long-range communication with introducing loco parentis tree network and chirp spreading spectrum. Since since a leaf can send message to more than one parents simultaneously with a single transmission in a region, packet delivery ratio increases logarithmically as the number of gateways increases. The delivery ratio, however, dramatically collapses even under loco parentis tree topology due to the limitations of ALOHA-like primitive MAC, . The proposed method is intended to exploit SDMA approach to reuse frequency in an area. With the view, TxPower of each sender for each message in a concurrent transmission is elaborately controlled to survive the collision at different gateway. Thus, the gain from the capture effect improves the capacity of resource-hungry Low Power and Wide Area Networks.