• Journal of Information Processing Systems
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• 제18권6호
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• pp.755-762
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• 2022

The existing electrical engineering design method and the dynamic objective function in the application process of automatic control system fail to meet the unbounded condition, which affects the control tracking accuracy. In order to improve the tracking control accuracy, this paper studies the electrical engineering design method based on neural network and the application of automatic control system. This paper analyzes the structure and working mechanism of electrical engineering automation control system by an automation control model with main control objectives. Following the analysis, an optimal solution of controllability design and fault-tolerant control is figured out. The automatic control power coefficient is distributed based on an ideal control effect of system. According to the distribution results, an automatic control algorithm is based on neural network for accurate control. The experimental results show that the electrical automation control method based on neural network can significantly reduce the control following error to 3.62%, improve the accuracy of the electrical automation tracking control, thus meeting the actual production needs of electrical engineering automation control system.

• 한국게임학회 논문지
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• 제2권2호
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• pp.104-112
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• 2002

효율적인 데이터 관리 및 처리를 위하여 XML이 웹 기반 웅용 시스템 에 적용되었다. 또한, ASP는 쉬운 웹 기반 프로그래밍의 구현을 가능하게 하였으며, UML은 시스템 모델링 기법의 새로운 대안으로 연구되고있다. 이에 관하여, 본 논문에서는 XML, ASP, UML을 이용하여 학생 수강신청 관리 시스템을 구현하였다. 이는, 학생모드와 관리자 모드로 구성되었으며, 효과적인 데이터 관리 및 처리를 위한 XML을 이용하였다. 또한, 시스템 분석 및 설계를 위하여 UML을 이용하였으며, 전체 시스템은 ASP로 구현하였다. 그리고, 데이터베이스는 MS-ACCESS를 이용하였으며, 웹 문서의 효율적인 활용을 위하여 Java Script 언어를 사용하였다.

• 한국콘텐츠학회논문지
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• 제16권2호
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• pp.243-250
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• 2016

최근 모바일 기기를 소유한 사용자가 증가하면서 기업에서도 모바일 기기의 보안성이 보장된 관리 환경 구현이 가속화됨에 따라 기업은 개인의 기기를 통제하고 효율적 관리를 위해 MDM을 도입하였으나 기존 MDM의 App 관리 기능은 관리자가 해당 App을 등록하기 전까지 보안 위협을 막을 수 없다. 따라서 본 논문에서는 이러한 문제점을 해결하기 위해 보안성 향상을 위한 애플리케이션 제어 시스템을 제안한다. 제안 시스템을 설계하기 위해 MDM의 기능과 인증 기술을 분석하였고, 시스템 아키텍처를 정의하여 사내의 정보 유출을 방지할 수 있는 모바일 기반 응용 제어 시스템을 설계 및 구현하였다. 구현한 제어 시스템의 보안성을 평가하기 위해 국제공통평가기준의 보안성 평가 항목을 기준으로 테스트 시나리오를 작성해 테스트를 진행하였다. 테스트 결과 평균 40%의 보안성이 향상된 결과를 확인하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제4권5호
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• pp.859-876
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• 2010

In this paper, we propose a hierarchical application traffic classification system as an alternative means to overcome the limitations of the port number and payload based methodologies, which are traditionally considered traffic classification methods. The proposed system is a new classification model that hierarchically combines a binary classifier SVM and Support Vector Data Descriptions (SVDDs). The proposed system selects an optimal attribute subset from the bi-directional traffic flows generated by our traffic analysis system (KU-MON) that enables real-time collection and analysis of campus traffic. The system is composed of three layers: The first layer is a binary classifier SVM that performs rapid classification between P2P and non-P2P traffic. The second layer classifies P2P traffic into file-sharing, messenger and TV, based on three SVDDs. The third layer performs specialized classification of all individual application traffic types. Since the proposed system enables both coarse- and fine-grained classification, it can guarantee efficient resource management, such as a stable network environment, seamless bandwidth guarantee and appropriate QoS. Moreover, even when a new application emerges, it can be easily adapted for incremental updating and scaling. Only additional training for the new part of the application traffic is needed instead of retraining the entire system. The performance of the proposed system is validated via experiments which confirm that its recall and precision measures are satisfactory.

• 디지털융복합연구
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• 제12권1호
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• pp.305-311
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• 2014

제조업에서는 경쟁우위 확보를 위해 일찍이 설계, 생산 과정의 자동화와 정보시스템을 도입하였다. 대표적인 정보시스템 중 하나가 제조실행시스템(Manufacturing Execution System)인데, 이러한 제조실행시스템은 진화를 거듭해 왔다. 최근 빅데이터가 등장하면서 MES도 빅데이터 적용 방안이 모색되고 있다. 이에 본 연구는 먼저 제조 분야에서의 빅데이터 활용에 대한 선행 연구 및 사례 분석을 토대로 MES에의 빅데이터 적용모델을 제안할 것이다.

• 한국군사과학기술학회지
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• 제23권4호
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• pp.417-425
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• 2020

Multi-resolution modeling(MRM) is required when simulating objects in variable resolution and can be applied for interoperating systems, which simulate objects in fixed resolution. However, most interoperation middleware do not support MRM, so participating models must handle several issues to simulate MRM system. In this paper, we propose an interoperation system, which is composed of several different resolution models, based on the High Level Architecture and Run-Time Infrastructure(HLA/RTI). In the proposed architecture, each model participates to a HLA federation through MRM adapter application, which supports data resolution conversion and HLA services while communicating with the model. MRM adapter application can be implemented based on an MRM adapter, and an adapter application development tool is proposed to support developing the application. Using the tool, developers can easily implement data resolution conversion component plugged-in HLA adapter. A case study is implemented in the proposed MRM system, and shows that models of different resolution works successfully with dynamic resolution changes.

• 대한원격탐사학회지
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• 제24권5호
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• pp.389-396
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• 2008

In these days, various kinds of web applications based on web 2.0 paradigm have been developed. In web 2.0 paradigm pursuing participation, sharing, and openness on the web-as-platform, web mapping or web GIS application are regarded as top most applications, so that web applications, handling geo-spatial contents, with user-interaction interface and search engine of high performance have been provided for both public users and expert users in the special domains. Public and industrial needs for web mapping mashup application by open API, linked with the practical web computing technologies, are gradually increasing. In this study, a user interface in mashup for geo-spatial feature generation was implemented by using mainly Google maps API. Spatial database resources in this implementation are those of Google mapping server. As the results, public users on web client can create their own geo-spatial data sets in web vector formats, without the help of any GIS tools or access to proprietary databases. It is concluded that web-based mashup application in client-side using open API can be used as an alternative for geo-browsing system or portable feature generation system.

• 현장농수산연구지
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• 제16권1호
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• pp.3-16
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• 2014

The purposes of this study is to draw up some measures for improving the farmer's satisfaction for certificate system of environment-friendly agricultural products. The data was collected from a survey in 2013. The results of survey for farmers producing environment-friendly agricultural products are as follows. First, almost 60% of the respondents are certified by the private certificate bodies. Second, the main factors affecting farmers' choice of the authority are their trust (49%), geographical adjacency (22.1%), and other farmers' recommendation (7.7%), etc. Third, the index of farmers satisfaction level regarding the certification bodies and the examiner is estimated as 4 out of 5 marks followed by ex post facto management (3.8), application process (3.77), application document (3.66), etc. Lastly, farmers want to make improvement on the complicated application process most (37.9%), followed by expensive application fee (25.2%) and excessive application documents (17.5%). The results can be used to improve the supervision system of certification bodies of farmers, who produce environment-friendly agricultural products.

• International Journal of Computer Science & Network Security
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• 제21권8호
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• pp.267-275
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• 2021

Smart application is developed in this paper by using an android-based platform to automatically determine the human emergency state (Lifesaver) by using different technology sensors of the mobile. In practice, this Lifesaver has many applications, and it can be easily combined with other applications as well to determine the emergency of humans. For example, if an old human falls due to some medical reasons, then this application is automatically determining the human state and then calls a person from this emergency contact list. Moreover, if the car accidentally crashes due to an accident, then the Lifesaver application is also helping to call a person who is on the emergency contact list to save human life. Therefore, the main objective of this project is to develop an application that can save human life. As a result, the proposed Lifesaver application is utilized to assist the person to get immediate attention in case of absence of help in four different situations. To develop the Lifesaver system, the GPS is also integrated to get the exact location of a human in case of emergency. Moreover, the emergency list of friends and authorities is also maintained to develop this application. To test and evaluate the Lifesaver system, the 50 different human data are collected with different age groups in the range of (40-70) and the performance of the Lifesaver application is also evaluated and compared with other state-of-the-art applications. On average, the Lifesaver system is achieved 95.5% detection accuracy and the value of 91.5 based on emergency index metric, which is outperformed compared to other applications in this domain.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.641-644
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• 2008

본 논문은 지능형 임베디드 시스템의 GUI 구현에 관한 논문이다. 지능형 임베디드 시스템의 GUI 구현을 위해 사용된 X 윈도우 시스템과 그래픽 라이브러리의 구조 및 동작에 대해 논하고 지능형 임베디드 시스템의 X-시스템에 필요한 기능 및 구성 요소에 대해 조사 및 분석을 통한 리눅스 커널과의 동작 및 기능 검증 구현을 보인다. 저성능 및 저전력이며 고용량 메모리를 탑재한 임베디드 시스템의 하나인 지능형 임베디드 X-시스템에서 적용 가능하도록 요구되는 기능과 동작을 구현하고 소형 운영체제를 위한 GUI 개발에 적용 가능하다. 이러한 소형 운영체제 및 이를 위한 X-시스템은 지능형 개인정보서비스를 위한 임베디드 플랫폼 시스템으로써 개인용 정보의 지능형 서비스 기능을 지원하고 새로운 소형 운영체제를 탑재한 시스템의 개발에 적용 가능하다. 본 논문에서는 이러한 지능형 임베디드 X-시스템과 응용 소프트웨어 및 서비스 개발을 위한 GUI환경 구현에 대하여 기술한다.