• Hwankyungkyoyuk
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• v.22 no.1
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• pp.110-119
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• 2009

To promote environmental education of elementary and secondary school in Seoul for a sustainable development, researchers investigated and analysed the current situation of formal and non-formal environmental education in Seoul as well as their major problems. Based on these current situation and problems, the way to improve the environmental education of elementary and secondary school in Seoul was described. The final section deals with specific recommendations to accomplish the improvement of environmental education of elementary and secondary school in Seoul for a sustainable development as follows: 1) Integration of formal and non-formal environmental education system, 2) Establishment and operation of a regional environmental education center for community, 3) International cooperation, and 4) To provide high quality environmental education programs.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.772-774
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• 2005

안전성이 강조되는 실시간 시스템에서 시스템이 시간의 제약을 만족해야만 한다. 실시간 시스템에서 오류는 잘못된 응답 뿐 만이 아니라 시간적으로 늦은 응답에 대해서도 오류로 분류를 할 수가 있다. 이런 오류들을 모니터하기 위해서 본 논문에서는 커널에 Timed Conformance Monitor를 모듈로 추가하였다. Timed Conformance Monitor를 통해서 실시간 태스크가 시간의 제약을 만족하는지를 분석하고 또한 분석 결과에 따라 오류를 처리할 수 있는 Fault Handler를 추가하여 실시간 시스템에 대한 Fault Tolerance를 보장해 줄 수 있다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.29 no.4
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• pp.821-834
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• 2019

As cyber security threats increase, there is a growing demand for highly reliable systems. Common Criteria, an international standard for evaluating information security products, requires formal specification and verification of the system to ensure a high level of security, and more and more cases are being observed. In this paper, we propose highly reliable drone systems that ensure high level security level and trust. Based on the results, we use formal methods especially Z/EVES to improve the system model in terms of scheduling in the system kernel.

• Journal of the Korea Fashion and Costume Design Association
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• v.7 no.1
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• pp.65-75
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• 2005

The purpose of this paper is to understand the formal characteristics of Pi-Ling by investigating the Pi-Ling(披領)'s system of Qing Dynasty. As a research document, Qing-Huidian-Tu(淸會典圓) has been used. The following results were found out in this research; 1) The form of Pi-Ling was horizontally wide and both sides were narrow and sharp. There was a circular hole in the center of Pi-Ling. It was worn around the neck by a button in its front center. 2) materials: The materials of Pi-Ling were the leather of marten or sea-lion, satins, and silk. 3) The color of Pi-Ling was purple or blue. 4) Moving dragons(行龍) were used on the pattern of Pi-Ling. And the Pi-Ling of low level officials had no patterns.

• Journal of Computing Science and Engineering
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• v.5 no.1
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• pp.85-110
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• 2011

Achieving situation awareness is especially challenging for real-time data stream applications because they i) operate on continuous unbounded streams of data, and ii) have inherent realtime requirements. In this paper we showed how formal data stream modeling and analysis can be used to better understand stream behavior, evaluate query costs, and improve application performance. We used MEDAL, a formal specification language based on Petri nets, to model the data stream queries and the quality-of-service management mechanisms of RT-STREAM, a prototype system for data stream management. MEDAL's ability to combine query logic and data admission control in one model allows us to design a single comprehensive model of the system. This model can be used to perform a large set of analyses to help improve the application's performance and quality of service.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.19-21
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• 2002

Writing requirements in formal notation for a safety-critical system can improve software quality and reduce the errors that may arise later on in the software development life cycle. In this paper, we propose a formal specification approach used to describe the nuclear control system. The approach is based on the existing AECL approach that was the only formal specification technique applied to nuclear control systems in the past. Although the approach is AECL-based, the complex descriptions of certain requirements have been reduced by using different specification techniques. We discuss the differences and how the proposed approach provides not only specification but also verification environment.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.181-183
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• 2004

Mission-Critical한 실시간 반응형 내장 시스템들의 설계과정에 있어 high-level abstraction과 formal(software 기반) modeling은 없어서는 안될 중요한 부분이다. 실시간 반응형 내장 system의 OS는 정형 명세 기법을 이용하여 시스템의 주요 component들을 설계하고 OS의 Formal model들을 모든 가능한 input들 아래 OS의 behavior를 엄격하게 검증함으로써 error가 없는 완벽한 OS를 개발할 수 있다. 본 논문에서는 uC/OS-11의 OS Scheduling 부분을 반응형 시스템 언어인 Esterel의 SyncCharts로 명세, 명세한 시스템의 요구조건을 정형기법을 이용친서 검증해보고자 한다.

• Journal of KIISE:Software and Applications
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• v.32 no.2
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• pp.108-118
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• 2005

The software of the nuclear power plant digital control system is a safety-critical system where many techniques must be applied to it in order to preserve safety in the whole system. Formal specifications especially allow the system to be clearly and completely specified in the early requirements specification phase, therefore making it a trusted method for increasing safety. In this paper, we discuss a systematic method, which generates PLC-based FBD programs from the requirements specification using NuSCR, a formal requirements specification method. This FBD programs takes an important position in design specification. The proposed method can reduce the possible errors occur in the manual design specification, and the software development cost and time. To investigate the usefulness of our proposed method, we introduce the fixed set-point rising trip example, a trip logic of BP in DPPS RPS, which is presently being developed at KNICS.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2005.04a
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• pp.221-224
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• 2005

This paper proposes the system model that is more efficient and active than formal home automation system and it can conquer the limits of formal one using intelligent mobile robot. This system uses specialized intelligent mobile robot for home environment and the robot moves around home instead of human. We call the system model to HAuPIRS (Home Automation system using PDA based Intelligent Robot System). HAuPIRS control architecture is composed three parts and each part is User Level, Cognitive Level, Executive Level. It is easy to use system and possible to extend the home apparatusfrom new technology. We made the PBMoRo System (PDA Based Mobile Robot System) based on HAuPIRS architecture and verified the efficiency of the system model.

• Journal of The Korea Institute of Healthcare Architecture
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• v.27 no.3
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• pp.7-16
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• 2021

Purpose: This study identified the planning trends for formal and informal learning spaces in the college of medicine through literature reviews. And then, by the analysis of the actual condition of existing domestic facilities, It was organized the architectural planning baseline data and future directions for the formal and informal learning spaces in the college of medicine. Methods: This study was conducted using literature reviews on the existing medical education method and learning space planning. Subsequently on-site surveys and questionnaires were conducted at existing facilities. Results: In the past, learning space of the college of medicine was considered only a formal learning space such lecture rooms, labs. But lately it has been turned into a total learning concept that embraces shared learning spaces such as libraries, student spaces, amenities and common spaces such as lobbies and hallways. ① Formal learning spaces are composed of teaching and practice areas. Since It is the basic functions that comprise the college of medicine, this paper conducted a functional analysis based on the current operating system of the College of Medicine and provided baseline data on architectural planning such as function, layout, zoning, and detailed planning. ② The informal learning sharing space was divided into a library area and a student well-being and convenience area to analyze the real conditions of domestic medical college. In addition, by comparing the trends and differences in foreign medical colleges identified by literature analysis, this paper summarizes the need to revitalize informal learning spaces and their integration into formal learning spaces, architectural planning considerations, etc. Implications: the evolution of the learning method and the flexibility of the learning space bring about changes in the learning space.