• The Journal of the Acoustical Society of Korea
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• v.38 no.1
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• pp.128-138
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• 2019

In this paper, we present fusion methods for two different lofargrams. Since the conventional method synthesizes the lofargrams using frequency spectrum, it has limited performance in fusion of tonal signals which have two-dimensional information of the time-frequency domain. Proposed algorithm uses a two-dimensional directional bilateral filter for preprocessing and fuses two lofargrams based on comparison of local anisotropy of the lofargrams. After noise is suppressed and tonals are sharpened, the local anisotropy can be used as a criterion to divide tonals and noise. The experiment results using simulated data and real data showed that the proposed algorithms result in similar or lower noise level of the fused lofargram than conventional algorithms and decrease tonal omission in fusion process.

• Convergence Security Journal
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• v.18 no.5_1
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• pp.75-81
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• 2018

As industries converge in recent years, the impact of the use of convergence tools among industries on the security of the organization is increasing. However, organizational members lack the ability to adapt to introduction of new system because they are operating business around existing systems, and thus, security considerations are an environment that will inevitably emerge as a follow-up priority. In this study, we studied cost-effective options for factors that should be considered first in order to establish a security system for small and medium-sized healthcare institutions in the healthcare convergence industry. Specifically, the current legal system was considered and the security status was analyzed through prior research, and the necessary security solution/system was derived from small and medium-sized healthcare institutions. In addition, it analyzed relative priorities for cost-efficient deployment of security systems to those involved in small and medium-sized healthcare institutions in actual business environments and presented measures to establish a overall security.

• Defense and Technology
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• no.7 s.293
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• pp.50-57
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• 2003

이라크 전쟁에서 네트워크 체계는 우주의 인공위성에 의한 정찰과 고고도, 중고도 및 저고도의 용도별 정찰 항공기들로부터 수집한 정보의 분석 및 융합을 거의 실시간으로 처리하여 그 정보를 요구하는 부대에 신속히 전파할 수 있는 네트워크 체계로서 우주선을 활용하여 전파할 수 있으므로 필요한 부대에서 정확한 정보를 이용한 정밀 공격이 가능하였던 것으로 판단된다. 이러한 네트워크 전쟁의 양상으로 판단할 때, 우리 군도 미래 네트워크 전쟁에 대비한 군사력 건설을 강화하여 앞서 언급한 기술들을 기반으로 하는 네트워크 체계 중심의 우주 및 공중 정찰로부터 필수적으로 요구되는 정보를 수집할 수 있는 정보 수집 및 분석/융합 네트워크 체계와 우주 및 공중으로부터 정밀 유도할 수 있는 정밀 유도 네트워크 체계를 건설하여야 할 것이다.

• Journal of Korean Home Economics Education Association
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• v.32 no.2
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• pp.117-139
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• 2020

The purpose of this study was to develop curriculum of the elementary, and secondary school home economics that integrates three systems of action and to prepare a plan for convergence education in home economics curriculum. To achieve this goal, the characteristics of elementary, secondary school dietary curriculum integrating three systems of action, the focus of development, core competencies, and goals were derived through the review of literature. In this study, we set up perennial and sub-practical problems and selected content elements. The contents system of the developed curriculum was modified and supplemented by examining the validity of experts, and the achievement standard of the middle school home economics dietary education curriculum was developed by integrating the three systems of action. The content system of the elementary, and secondary school home economics curriculum that integrated the three systems of action is centered on practical problems, and the perennial problem is 'What should we do to practice healthy dietary life?' There are five areas of this curriculum: 'health and diet', 'food planning', 'food purchase and management', 'cooking', and 'meal', and the scope of curriculum is repeatedly expanded to 'personal and family', and 'social'. The practical problems in the five areas are composed of 10 practical problems in the two dimensions (personal & family, and society), and the practical problems and contents elements are spiralled by applying the principle of integration. The contents of this curriculum were compared with the achievement standards and learning elements of the dietary life in the 2015 elementary school practical arts, middle and high school 'technology & home economics', and the 'home economics science' curriculum. The results showed that the developed curriculum encompassed additional content beyond all the content already included in the 2015 revised curriculum.

• Convergence Security Journal
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• v.14 no.6_1
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• pp.147-155
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• 2014

Encryption and authentication system in National Defense is divided into three system; KMI, MPKI, and GPKI. In this paper, we report inherent problem and security threaten in MPKI and propose an attribute-based authentication scheme using attribute-based signature in order to improve user authentication. In our scheme, access structure is used by Monotone Span Program, and system server provides service after user authentication.

• Korea Information Processing Society Review
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• v.24 no.1
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• pp.13-18
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• 2017

국방지휘통제체계는 다양한 감시정찰 자산으로부터 수집된 많은 양의 정보를 융합하고 분석하여 지휘관이 최적의 의사결정을 내릴 수 있도록 지원하는 시스템이다. 하지만 현재 운영 중인 지휘 통제체계는 단순히 정보를 보여주고 유통하는 체계로 대량의 정보를 분석하고, 최적의 방책을 제공하는 등과 같은 지휘관의 의사결정을 지원하기에는 미흡한 수준이다. 지휘통제체계의 지능화 수준을 높이기 위해서 최근 이슈가 되고 있는 인공지능을 지휘 통제체계에 적용해 보고자 한다. 인공지능은 다양한 분야와의 융합을 통해 새로운 가치를 창출하고 사회 전반의 변혁을 이끌고 있다. 이러한 특성으로 4차 산업혁명의 핵심으로 주목받고 있다. 본 논문은 주요 선진국들의 인공지능 관련 추진동향과 인공지능의 국방적용을 위한 군사적 활용의 필요성, 그리고 지휘통제체계의 적용을 위한 고려요인들에 중점을 두었다. 지휘관의 의사결정을 보다 효과적으로 지원할 수 있도록 지능화된 지휘통제체계로 발전하는 데 기여할 수 있다고 생각한다.

• Journal of Digital Contents Society
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• v.14 no.1
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• pp.97-109
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• 2013

Recently the value and importance of contents industry is rapidly increasing. In particular, consumption on contents convergence integrating contents and new technologies is being increased as smart devices become popular. Next generation contents convergence industry is being recognized as a new engine for national economic development. However there is no concrete framework defining next generation contents convergence industry. This fact brings about serious problems in defining the scope of the industry. To develop effectively new industry, there is a strong need to define types of contents convergence based on dominant factors leading content convergence trend while shedding light on contents, technologies and industry. To define classification of next generation contents convergence indudstry, this study analyzes attributes of contents convergence and carries out conjoint analysis. Based on the attributes found from conjoint analysis, the study suggests new classification scheme of contents convergence industry.

• Convergence Security Journal
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• v.20 no.4
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• pp.35-45
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• 2020

Cyber attacks on the aviation weapon system, a state-of-the-art asset, have become a reality and are approaching as a constant threat. However, due to the characteristics of embedded software of the current aviation weapon system, it is managed and operated without connection to the network in peacetime, so the response management to cyber attacks is relatively weak. Therefore, when a cyber attack becomes a reality, it is urgent to prepare and evaluate measures for the adverse effects that such attack will have on the execution of the Air Tasking Order(ATO). In this paper, we propose a framework for operational impact assessment in order to avoid confusion in ATO execution and systematic response to cyber attacks on aviation weapons systems. The proposed framework is designed to minimize the negative impact on operations against cyber attacks that may occur under no warning by analyzing the impact on air operations for each aviation weapon system and standardizing countermeasures for this. In addition, it supports the operational commander to make a quick decision to command for the execution of the operation even in a situation where a cyber attack occurs.

• Annual Conference of KIPS
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• 2020.11a
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• pp.665-668
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• 2020

대규모 프로젝트나 상호 이질적인 여러 시스템을 보유하고 있는 기관에서는 보통 시스템을 여러개로 나누어 운영하고 있다. 이러한 경우 운영의 효율성을 위해 시스템 통합에 대한 요구가 증가하게 된다. 시스템을 하나로 통합하다 보면 효율적인 운영이 가능하며, 단일화된 서비스를 통해 이용자는 여러 서비스를 한 곳에서 활용할 수 있는 편의성을 제공할 수 있다. 본 연구에서는 통합서비스 구축을 통해 이용자가 여러 서비스를 효율적으로 활용할 수 있는 접근점 중의 하나인 분류체계 구축 방법을 소개하고 실제 구현 사례를 제시한다. 통합서비스 요구분석을 통해 서비스에 필요한 분류체계들을 도출하고 다양한 서비스들을 여러 분류체계에 맞춰 구분함으로써 이용자는 원하는 서비스를 효율적으로 접근할 수 있는 장점이 있다. 이에 통합서비스에서의 분류체계는 중요한 서비스 요소 중의 하나이다. 본 연구결과는 대규모 통합서비스 구축시 필요한 분류체계 구축 절차에 활용될 수 있다.

• Convergence Security Journal
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• v.23 no.5
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• pp.189-197
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• 2023

The Republic of Korea Army (ROK Army) is currently developing the Army Synthetic Battle Training System (ASBTS) by 2026 and will use it to advance division-level LVC integrated training. This study proposes a way to improve the effectiveness and efficiency of training by applying VR/AR technology to the ASBTS. To this end, we analyzed cases of VR/AR technology use in the defense field in advanced countries and the ROK military. As a result, we confirmed that the effectiveness and efficiency of training can be improved when the training system is converted to an immersive system. Accordingly, we selected and presented defense training subjects to be applied to VR/AR technology, considered the development direction for applying VR/AR technology to the ASBTS, and proposed a way to apply VR/AR technology to the ASBTS.