• International journal of advanced smart convergence
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• 제6권2호
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• pp.1-8
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• 2017

Recently, the development of the information communication industry has made many changes in the industrial acoustic industry. Especially, it has a great influence on the change of system and equipment of acoustic system. Analog equipment is changing to digital equipment, and integrated control equipment makes it easier to operate and manage the sound system. However, the integrated control system currently on the market is only controllable for some devices. In this paper, we propose a new AoIP - based system configuration method, which enables the operation status monitoring, unmanned operation and self - diagnosis of equipment. As a result of the study, it is confirmed that the proposed system can be operated, monitored, and self - diagnosed at remote sites. It is expected that an AoIP- based sound system will be the industry standard in the future.

• 한국멀티미디어학회논문지
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• 제19권6호
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• pp.1052-1064
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• 2016

For effective management and processing for civil affairs, online public services are in operation in every administrative organizations. However, due to the lack of links in each government departmental business processes on e-Government system, the satisfaction of the civil petitioners has not improved. In this paper, we propose an improved business process for the implementation of one-stop integrated civil affairs and suggestions services on e-Government system to reduce the time and cost for processing civil affairs and to improve the efficiency of the public services by cutting down the cost and time. This paper also suggests the ways to improve the quality of public service through redesigning civil affairs processing in the light of integrated system for the civil affairs and its suggestion.

• 문화기술의 융합
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• 제8권6호
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• pp.569-580
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• 2022

현재, 교육부 장관이 교육부 중심으로 유보통합추진하는 것을 공식 발표하였다. 유보통합의 핵심은 유치원과 어린이집의 통합으로, 구체적인 모델(안)을 개발할 필요가 있어 본 연구를 수행하였다. 유보통합 논의 이후 유아학교를 중심으로 논의가 되어 왔고, 구체적인 사안에서 의견 차이가 있었다. 이에 본 연구는 교육부 중심으로 유치원과 어린이집이 통합된 이후 유아학교 모델(안)의 단계별 방향을 제안하고자 수행하였다. 연구문제는 교육부 중심 0-5세 유아학교 모델(안)은 어떠한지 알아보는 것이다. 본 연구에서는 유보통합이 실현된 이후의 설립유형별 유아교육기관 통합 방안을 제안하였다. 본 연구의 결론으로 첫째, 국가책임 단계별 0-5세 유아학교 모델(안)이 요구된다. 둘째, 다양한 설립유형별 특성을 반영한 세부적인 유아학교 모델(안)이 개발되어야 한다. 셋째, 유아학교 체제시 교원양성체계 개편, 방과후과정 운영 모델, 교육청 및 지자체 통합 방안 등의 구체적인 방안이 제시되어야 한다.

• Structural Engineering and Mechanics
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• 제85권4호
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• pp.485-500
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• 2023

The non-linear static analysis of reinforced concrete (RC) structures using the three-dimensional (3D) finite element method is a time-consuming and challenging task. Moreover, this type of analysis encounters numerical problems such as the lack of convergence of results in the stages of growth and propagation of cracks in the structure. The time integration analysis along with the mass scaling (MS) technique is usually used to overcome these limitations. Despite the use of this method in the 3D finite element analysis of RC structures, a comprehensive study has not been conducted so far to assess the effects of the MS method on the accuracy of results. This study aims to evaluate the accuracy of the MS method in the non-linear quasi-static finite element analysis of RC structures. To this aim, different types of RC structures were simulated using the finite element approach based on the implicit time integration method and the mass scaling technique. The influences of effective parameters of the MS method (i.e., the allowable values of increase in the mass of the RC structure, the relationship between the duration of the applied load and fundamental vibration period of the RC structure, and the pattern of applied loads) on the accuracy of the simulated results were investigated. The accuracy of numerical simulation results has been evaluated through comparison with existing experimental data. The results of this study show that the achievement of accurate structural responses in the implicit time integration analyses using the MS method involves the appropriate selection of the effective parameters of the MS method.

• Journal of information and communication convergence engineering
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• 제12권1호
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• pp.39-45
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• 2014

A numerical method for solving Hamiltonian equations is said to be symplectic if it preserves the symplectic structure associated with the equations. Various symplectic methods are widely used in many fields of science and technology. A symplectic method preserves an approximate Hamiltonian perturbed from the original Hamiltonian. It theoretically supports the effectiveness of symplectic methods for long-term integration. Although it is also related to long-term integration, numerical stability of symplectic methods have received little attention. In this paper, we consider explicit symplectic methods defined for Hamiltonian equations with Hamiltonians of the special form, and study their numerical stability using the harmonic oscillator as a test equation. We propose a new stability criterion and clarify the stability of some existing methods that are visually based on the criterion. We also derive a new method that is better than the existing methods with respect to a Courant-Friedrichs-Lewy condition for hyperbolic equations; this new method is tested through a numerical experiment with a nonlinear wave equation.

• Journal of information and communication convergence engineering
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• 제6권3호
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• pp.323-326
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• 2008

Data Envelopment Analysis (DEA) is a theoretically sound framework for performance analysis that offers many advantages over traditional methods such as performance ratios and regression analysis. Largely the result of multidisciplinary research during the last three decades in economics, engineering and management, DEA is best described as an effective new way of visualizing and analyzing performance data. Besides, overseas information technology companies have aggressively tried to enter the domestic market. In the age of globalization and high competition, it is imperative that the system integration (SI) companies need to introduce the performance evaluation models of SI projects, including Capability Maturity Model and Software Process Improvement and Capability Determination, to gain a competitive advantage. Therefore, it makes our research regarding evaluation of SI projects very opportune. The purpose of the study is not only to evaluate efficiency of each project by DEA but also to gain insight into various factors such as project complexity, team members' man-months structure, and process index(project management index) that link to the projects performance.

• Journal of information and communication convergence engineering
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• 제7권3호
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• pp.275-280
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• 2009

While database(DB) and information retrieval(IR) have been developed independently, there have been emerging requirements that both data management and efficient text retrieval should be supported simultaneously in an information system such as health care, customer support, XML data management, and digital libraries. The great divide between DB and IR has caused different manners in index maintenance for newly arriving documents. While DB has extended its SQL layer to cope with text fields due to lack of intact mechanism to build IR-like index, IR usually treats a block of new documents as a logical unit of index maintenance since it has no concept of integrity constraint. However, In the DB-IR integrations, a transaction on adding or updating a document should include maintenance of the posting lists accompanied by the document. Although DB-IR integration has been budded in the research filed, the issue will remain difficult and rewarding areas for a while. One of the primary reasons is lack of efficient online transactional index maintenance. In this paper, performance of a few strategies for per-document basis transactional index maintenance - direct index update, pulsing auxiliary index and posting segmentation index - will be evaluated. The result shows that the pulsing auxiliary strategy and posting segmentation indexing scheme, can be a challenging candidates for text field indexing in DB-IR integration.

• 한국초등과학교육학회지:초등과학교육
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• 제37권2호
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• pp.188-205
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• 2018

For STEM education science teachers usually choose topics which are related to both science and other disciplinary contents. Nevertheless it is not clear for the teachers to adopt what kind of criteria for their choices. Interdisciplinary teaching is not a mixture of science content with another one from different disciplines as resources for the content teaching. Instead the criteria and perspectives for the integration need to be clearly defined. In this study we investigated how to integrate science and other disciplines in terms of interdisciplinary teaching. Family resemblance approach by Wittgenstein, recently revised by Erduran and Dagher, was applied to comparative analysis of science, math, and physical education curriculum documents in Korea. Aim and value, methodological rules and methods, knowledge, and activities in each discipline were compared and analyzed with the view of FRA. Results of the study described alternative criteria of how to find appropriate topics for interdisciplinary teaching.

• 한국엔터테인먼트산업학회논문지
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• 제15권4호
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• pp.31-43
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• 2021

요즘 시대의 화두는 바로 혁신과 융합이다. 혁신을 통해 융합이 탄생하고 융합을 통해 혁신이 이루어지니 융합이 곧 혁신이라고도 볼 수 있다. 대중문화에서 융합이라는 개념으로 쓰이는 크로스오버와 콜라보레이션(*크로스오버로 통칭)은 서로 다른 장르나 분야 간의 결합, 통합을 의미하며 최근 영화나 음악 등 다양한 분야에서 사용되고 있다. 크로스오버의 활용은 타 분야와의 경계를 허물고 자유롭고 다양한 시도를 통해 새로운 작품을 창조해 내는 데 도움을 준다. 이에 본 연구에서는 대중문화의 융합, 즉 크로스오버를 한국의 공포영화 장르와 연계하여 분석해본다. 현재 한국 공포영화는 90년대에서 2000년대 초반까지 인기를 끌다가 현재는 연속된 흥행 부진으로 인해 소수의 작품만이 나오는 실정이다. 하지만 본 연구 결과 한국 공포영화에서도 이미 크로스오버 시도는 시작되었고 몇몇 흥행한 작품들에서 크로스오버의 흔적이 강하게 발견되었다. 본 연구에서는 거기에서 더 나아가 <어벤저스> 같은 캐릭터 콜라보레이션까지 적용해서 한국 공포영화의 새로운 방향성까지 제시해본다.

• 디지털융복합연구
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• 제12권2호
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• pp.327-333
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• 2014

현재 컴퓨팅 기술은 대부분 웹 기반으로 수행된다. 따라서 사용자는 필요한 자원이나 서비스들을 웹에 등록하고, 찾아 사용할 수 있다. 이러한 서비스들은 단독적으로 사용될 수 있고, 복합적으로 사용될 수 있다. 이것의 복합적 사용은 단위 서비스들의 순서와 연관성이 중요하며, 서비스의 관계를 정의한 온톨로지가 필요하다. 본 논문은 온톨로지를 기반으로 서비스의 연관관계를 정의하고, 이를 통해 서비스를 통합하여 사용할 수 있는 방안을 제안한다. 제안된 방안은 서비스 영역과 데이터 연관 영역으로 구성함으로써 효율적인 서비스 검색이 가능하다.