• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.462-462
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• 2021

최근 도시화 및 불투수면의 증가와 지하수의 과다한 사용으로 직접유출이 증가하고, 침투량이 감소하며, 하천의 건천화가 발생하고 있다. 이에 환경부에서는 이러한 물순환의 왜곡을 막기위해 물환경보전법상의 물순환율을 정의하고 물순환 관리목표를 설정하였다. 하지만 지역 별 물순환 특성을 반영한 관리계획이 부족하고, 현재 제한된 재원의 효율적 활용을 위해서는 물순환 관리지역에 대한 우선순위 결정도 필요하다. 본 연구에서는 PSR framework를 통해 유역 물순환 평가방법론을 만들고 이를 활용한 지역별 관리계획 및 우선순위를 결정하고자하였다. PSR framework는 지속가능성을 위해 OECD가 개발한 개념 모형이며, Pressure, State, Response 세 가지 요소로 구분해 평가하게된다. PSR framework의 기본 개념은 인간의 활동들이 환경에 압력 (P)를 주고, 이로 인해 자연의 질과 영향 (S)을 미치며, 이에대한 회복을 위해 인식과 행동을 통해 정책과 제도 등을 통해 반응 (R)한다는 것이다. 유역 물순환을 4가지 그룹 (기후, 수문학적, 사회경제학적, 환경적)으로 구분하고 각 그룹 별 평가요소에 대하여 도출하였다. 기후그룹은 강우, 수문학적 그룹은 증발산, 토지이용, 유출특성을, 사회경제학적 그룹은 재정, 사회구조, 기반시설, 정책을, 환경적 그룹은 수질, 수생태계를 선정하였다. 이후 각 요소 별 평가를 위해 다양한 지표를 고려하여 선정하였으며, 각 지표를 PSR framework에 맞춰 재분류하였다. 각 지표를 하나의 점수로 통합하기 위해 지표 별 가중치를 산정하였으며, 이때 연구자의 주관이 반영되지않는 엔트로피 기법을 이용하여 산정하였다. 구한 식을 통해 우리나라 소유역구분을 기준으로 모든 지표를 계산하였으며, 각 지표에 가중치를 적용해 유역 종합점수를 산정하고 유역 별 취약지역 및 취약요소를 평가하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.3A
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• pp.457-464
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• 2006

Fiber-reinforced composite materials due to their high specific strength, high stiffness and light weight are becoming increasingly used in many engineering industry, especially in the aerospace, marin and civil, etc. In this paper, the buckling load and mode shapes of composite laminates with elliptical cross-section including transverse shear deformations are analyzed. For solving this problems, a versatile flat shell element has been developed by combining a membrane element with drilling degree-of-freedom and a plate bending element. Also, an improved shell element has been established by the combined use of the addition of enhanced assumed strain and the substitute shear strain fields. The combined influence of shell geometry and elliptical cross-sectional parameter, fiber angle, and lay-up on the buckling loads of elliptical cylinder is examined. The critical buckling loads and mode shapes analyzed here may serve as a benchmark for future investigations.

• Journal of Korea Technology Innovation Society
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• v.13 no.2
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• pp.282-309
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• 2010

Recently, technology acquisition through technology trade plays a critical role in obtaining national competitiveness in a global era. However, current studies mostly focus on grasping the characteristics or macro status of technology trade and analyzing the impact of technology acquisition through the technology transaction, leading to the failure of providing a theoretical and practical background of national policy-making. Therefore, this research aims at investigating the concentration rate of technology, companies and countries where Korean companies obtain technological capability on the basis of the Bank of Korea's data related to 'loyalty payment in technology licensing', additionally analyzing the types of exported technology and loyalty payment. From these analyses, the degree of concentration that pre-defined 31 technology classifications depend on specific technologies, companies and nations are examined and the characteristics of technology trade types are investigated. The results of this research can be used to make a technology policy and analyze the characteristics of technology innovation of Korea industries.

• Journal of the Korean Society for Library and Information Science
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• v.36 no.2
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• pp.5-24
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• 2002

The purpose of this study is to describe the information environment of ST information users in Korea by examining their needs and satisfaction for documents. Comparison was made between the statistics of KISTI DDS and NACSIS-ILL document copy service, and data from the survey conducted for KISTI's ST information users in 2001 were analyzed. Findings include the low demand for documents delivery, low success rate in obtaining documents from domestic institutions, including KISTI, relatively high reliance on foreign DDS institutions, and difficulties in getting documents with speed, timeliness, and cost-effectiveness. It seems urgent to implement the strategic plans for more comprehensive and well-organized collection development and resource-sharing, and improvement of DDS.

• Journal of Korean Library and Information Science Society
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• v.35 no.3
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• pp.119-138
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• 2004

The objective of digital preservation is to ensure that digital information survives in usable form for as long as it is wanted That is to ensure long-term access to digitally stored information. The preservation of digital objects involves a variety of challenges, including policy questions, institutional roles, legal and rights issues, metadata, and technical strategies. In this paper, I introduce the definition of digital object life-cycle of digital object and related archiving workflow which are basic concepts of digital archiving. Also I focus on the aspects of current techniques used in digital information preservation including technology preservation, emulation, refreshing, migration, encapsulation.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.229-233
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• 2011

IT기술의 발달과 함께 최근 유비쿼터스 패러다임이 등장함에 따라 수자원분야의 정보화 환경이 변화하여야 한다는 논의가 활발하다. 빈번하게 발생하고 있는 자연재해에 있어서 주요 치수시설물의 안전모니터링은 새로운 기술의 적극적인 도입과 개발이 필수적이다. 또한 지속적인 수자원 관리 및 활용 고도화를 위해서도 정보화 경쟁력을 제고하고, 높아지는 사용자의 서비스 요구수준을 충족시켜야할 필요가 있다. 본 연구는 제방 및 보(수문)의 안전모니터링 선진화를 위해 다음과 같은 과정으로 연구하였다. 주요 치수시설물의 안전모니터링 요소를 분석하기 위해 붕괴원인 유형에 따른 주요 모니터링 취약성 인자를 도출한다. 취약성 인자 중 제방의 경우 침투, 침식, 월류, 구조물에 의한 붕괴 등에 의한 유형과 보(수문)의 경우 전도, 활동, 부유 등 다양한 관련 붕괴 현상을 검토하여 각각의 발생된 인자 특성별 모니터링이 가능하도록 최적 센서를 도출한다. 이러한 일련의 과정은 과거의 계측기를 통하거나 육안 및 수동적인 모니터링에서 벗어나, IT기술의 통신분야와 융합한 무선센서네트워크를 적용하여 경제성, 효율성, 현실성을 가지는 치수시설물의 모니터링이 가능하도록 하였다. 향후 이러한 USN(Ubiquitous Sensor Network) 등 유비쿼터스의 융합과 IT기술을 활용한 치수시설물 안전모니터링 선진화를 통해 홍수방어 및 관리시스템 구축에 활용되어 인명 및 재산피해를 절감하고 기술수준을 향상시킴으로서 홍수 재해로부터 안전한 국토 건설 및 국민의 삶의 질을 향상시킬 것이다. 또한, 국가 홍수관리 시스템 구축, 치수능력증대, 장래유역단위 통합홍수방어 및 관리기술 개발에 기여할 것으로 판단된다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.12 no.6
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• pp.573-581
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• 2019

In the era of the 4th Industrial Revolution, the necessity of training advanced engineering personnel with convergent creativity to handle technologies such as artificial intelligence, big data, and the internet of things (IoT) is increasing. In this paper, a new approach of engineering education based on academia-industrial cooperation and design-centered teaching technique for the students who need to learn practicable engineering skill with convergent creativity for the fourth industrial age is presented. It analyzes the strengths and weaknesses of the existing engineering education innovation activities, presents the practical necessities based on the experience of the educational system and the requirements of the educational environment, and analyzes the existing activities and the new roles. In particular, we discuss how to combine student-centered teaching methodology for effective design education, which is a key element of innovative engineering education. Most of the presented methods are verified by the authors' needs and effects in the education field.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.233-239
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• 2006

As the number of aged-housing has been rapidly increased, many kinds of defects and problems such as degeneration of housing environment, structural performance, and equipment performance have been appeared. The reconstruction as the way to improve the aged-housing has been used mostly because the legal process of the reconstruction is relatively easy. On the other hand, it has caused problems such as the lack of natural aggregate, the environmental damages owing to construction wastes, the loss of national resources, and the lack of the housing for rent nearby the reconstruction area. This problems limit active tying into the reconstruction business at present in the industrial and political perspective. In this context, it is required to revitalize the remodeling rather than the reconstruction. In order to reach this objective, this research aims at identifying the user-oriented performance for the housing industry and developing the new technologies. It is expected that the result of this research can contribute to more revitalize the remodeling as tying researches in terms of design, structure, equipment, and construction.

• Journal of KIISE:Software and Applications
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• v.31 no.5
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• pp.543-554
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• 2004

In Requirements engineering, requirements elicitation and analysis are very important tasks to develop software systems successfully. Even though various methods have been proposed including scenario-based analysis, goal based analysis, and coupling goal with scenario, each method has its own strengths and weaknesses. If you use only one method, it is very difficult to elicit and to analyze system requirements completely. Since these methods don't support a comprehensive elicitation process, this paper proposes an integrated approach. This integrated approach is focused on two viewpoints. One is what factors are comprised and the other is how they are integrated. This paper also shows how the proposed approach can be applied to Meeting Reservation System (MRS) development. An experiment has been conducted using this approach to demonstrate how complete requirements are elicited and analyzed and to show relative time savings during elicitation in comparison to each method.

• Journal of Korea Society of Industrial Information Systems
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• v.20 no.1
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• pp.91-102
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• 2015

The growth of Korean economy has continuously declined since 2000, which resulted in the reduction of employment creation opportunity. Futhermore, these circumstances are aggravating the youth job creation. This study investigates the co-creation approach for solving the youth job creation problem. By using the grounded theory on recent newspapers for a year, the study proposes a paradigm model for the youth job creation. Based upon this result, the study creates the conceptual model for the youth job creation, which includes three factors such as process, environment, and institution. This study will contribute not only to the extension of qualitative study on the grounded theory in research, but also to the political implications for the youth job creation in practice.