• 한국환경과학회지
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• 제26권2호
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• pp.133-146
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• 2017

This study aimed to develop strategies to re-establish the Park Nature Conservation Area in Bukhansan National Park, reflecting landscape ecological value by using the zonation program Marxan with Zones. Planning unit was set by watershed, and the basic data were mapped, considering topographical and ecological values. Mapped indicators were analyzed with the application framework of Marxan with Zones by indexing some indicators. The zones divided into Park Nature Conservation Area (Zone A), Park Nature Environment Area I(Zone B) which is reflected on the concept of Potential Park Nature Conservation Area and Park Nature Environment Area II(Zone C). The best solution for each of the scenarios was fixed through the sensitiveness analysis. From these, the final solution was selected considering five criteria including area ratio of conservation area and grouping. Lastly, the final solution was verified in the overlapped analysis with recent zonation. According to the results, the number of watersheds was 77, with an average area of $1,007,481m^2$. In terms of basic mapping and indexation, the slope index and number of landscape resources for topographical property were average 0.22 and 38 places, respectively. Biotope index was average 0.69 and legally protected species was 14 species, reflecting ecological values. As the social and economic indicators, trail index was average 0.04, and the number of tour and management facilities was 43 places. Through the framework of Marxan with Zones, the best solution for scenario 1 which was set by the highest conservation criteria was selected as the final solution, and the area ratio of Park Nature Conservation Area and grouping was excellent. As the result of overlapped analysis, suggested zonation of the Park Nature Conservation was better than the recent zonation in the area raito (28.3%), biotope grade I(15.4%) and the distribution points (10 places) of legally protected species with verification of proper distribution of conservation features according to the zone.

• 한국과학교육학회지
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• 제39권5호
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• pp.681-694
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• 2019

This study intends to delineate the characteristics of various perspectives on the nature of science (NOS) through the textbook analysis. Thus, centering on a science textbook called Science Laboratory Experiments, this study analyzes the elements of the NOS from three different perspectives: the consensus view, features of science (FOS), and family resemblance approach (FRA). While the consensus view highlights the similar elements of the NOS across the topics, the FOS is concerned about empirical ways for doing science. The FRA rather focuses on socio-cultural aspects of science activities. While the consensus view is useful to reify the features of the NOS, the FRA helps to understand science from various viewpoints. Regarding the philosophical account for three perspectives, all of them are ambiguous to some extent. The consensus view holds contradictory dispositions e.g., relativism vs. (post-)positivism, and critical realism and instrumentalism. The FOS supports empirical tradition but cannot effectively cope with the anomalous situation. The FRA is useful to show up the ways of science in both microscopic (personal) and macroscopic (social) viewpoints. However, the broader concept about science may mislead understanding of the NOS. Consequently, this study provides some implication for improving the framework of the NOS and teaching the NOS in the classroom.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1995년도 춘계공동학술대회논문집; 전남대학교; 28-29 Apr. 1995
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• pp.221-231
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• 1995

This paper proposes that a GDSS research boundary needs to be further expanded to include more human-nature variables arising in natural group interaction processes. By doing so, we can better understand the GDSS phenomena and have a better picture for designing effective GDSS for group decisions. Specifically, this paper reviewed literature and explored variables to be further included in GDSS research arena. As results, this paper proposed an extended framework for GDSS research that includes variables that have been little considered in most empirical studies to date. Then, the variables and their relationships are used to explain the handicaps of current GDSS uses and to redirect the ways of utilizing GDSS technologies for group decision-making. Based on the framework, we suggested proposititions for the future research.

• 한국과학교육학회지
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• 제36권2호
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• pp.303-315
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• 2016

본 연구는 다양한 과학기술관련 사회쟁점(SSI)에 대한 논의과정에서 기술의 본성(NOT)이 어떻게 나타나는지를 분석하여 SSI 교육 및 과학교육에서 NOT의 연계성 및 역할을 제안하는 것을 목적으로 한다. 원자력 발전소 건설 및 사고, 유전자재조합식품, 우주 개발과 같은 다양한 SSI 사례를 살펴보면 개념적으로 과학과 함께 기술이 연계되어 있다는 것을 알 수 있다. 또한, 연구자는 선행연구에서 초기 형태의 NOT를 구성하여 유전자재조합식품에 관련된 SSI 의사결정에서 NOS보다는 일부 NOT 요소가 명시적으로 나타난다는 결과를 확인한 바 있다. 이를 기반으로 하여 본 연구에서는 과학기술과 연관된 다양한 SSI 맥락을 도입하였고, 연구자가 개발한 통합적 NOT 개념틀을 채택하여 체계적인 분석을 시도 하였다. 해당 NOT에서는 기술의 다양한 존재 양식을 보여주는 인공물(artifacts), 지식(knowledge), 실행(practice) 그리고 시스템(system)이라는 4 가지 차원을 도입하였는데, 이러한 통합적인 접근을 반영한 NOT는 학생들의 다양한 SSI추론을 포착하고 분석하기에 적절하였다. 서울 소재 대학교의 교양수업 커리큘럼으로 모둠별로 SSI를 선정하여 수업에서 전체 토의 및 토론을 이끄는 과제를 제시하였는데, 대학생 45명이 참여하여 총 7 가지 SSI 주제를 구성하여 발표 하였다. 그 과정에서 다양한 SSI 추론 자료를 수집하였고, 학생들이 어떤 NOT 인식하고 어떻게 이해하고 있는지를 분석하였다. 결과적으로 다양한 SSI 추론에서 일부 NOT 요소가 자연스럽고 명시적으로 나타났다. 특히, 인공물 및 시스템 차원에 해당하는 NOT 요소는 SSI의 맥락에 상관없이 자주 나타났고, 지식 및 실행차원의 NOT 요소는 자주 등장하지 않거나 간접적으로 드러났다. 더욱이 학생들의 NOT 이해의 깊이와 수준에서 질적 차이를 확인할 수 있었는데 이 결과는 과학교육 현장에서 학생들에게 요구하는 NOT 이해가 무엇인지를 구체적으로 제안할 수 있는 기회를 제공하였다.

• 과학교육연구지
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• 제38권1호
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• pp.57-77
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• 2014

A longitudinal study traced changes in students' understanding of Nature Of science (NOS) through the public secondary science education in Ontario Canada. Although the concepts of NOS are complicated, and students' understandings are not easy to change, not many longitudinal studies have been done across the world. The current study tried to identify the changes of participating students' understandings of NOS for two and half years of public secondary science education in Ontario Canada. Pretest was administered using Views of Nature of Science (VNOS-C) when six participants graduated from a middle school of Toronto. Two and half years of secondary education, the posttest was carried out using the same instrument. After pre and posttest, probing interviews were performed. The analysis of the data was founded on the Standards and the conceptual framework for this study. The findings were that the initial views have little changed. Most examples and explanations the participants provided were from their science classes. Lab activities for confirming the existing laws and theories and observable photos in science textbooks made students regard the knowledge as a truth. Naturally, their knowledge has been expanded for 2 and 1/2 years, but this expansion of scientific knowledge led students toward Universalist views on science. On the other hand, when science was presented with a historical approach or was networked with other concepts, students acknowledged science and scientific knowledge had been induced from inferences as well as observations and experimental results. Based on the findings the authors of this research suggest that educating the knowledge of science should be historical and networked approaches rather than teaching the knowledge as concise and true statements of the nature.

• 안보군사학연구
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• 통권8호
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• pp.271-309
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• 2010

The main theme of this study is about North Korea's contemporary military strategy which remained a blind spot in the 21st century. Indeed, Pyongyang's contemporary military strategy is evolved from the logic of War. On the basis of this logic, this study examined North Korea's contemporary military strategy with three analytical frameworks. The first is the discovery of Clausewitz's dictums and application of the Trinitarian analysis on the Korean cases. During the course of applying Clausewitzian main dictum--War as continuation of politics, the methodological analysis on war played a important role generalizing the pattern and matrix of North Korea's strategic thinking and military strategy. In particular, Clausewitz's Trinitarian framework on war -Government (reason), Army (chance), People (passion)- was a universal framework to scrutinize the North Korean missile and nuclear strategy. The second is about the matrix of North Korea's military strategy, The study suggested the genealogical feature of Pyongyang's military strategy. In principle, the dictum of 'Military-First Politics' 1S the combination of the political philosophy, Chuch'e (self-reliance) of Kim Il Sung and Kin Jong Il reflected in the military readiness. As a result this analysis was able to equate Clausewitz's dictums to explain Pyongyang's idea of the nature of war in that North Korea's military strategy is the central instrument of delivery to achieve political objectives. The third is about the theoretical encounter of 'Clausewitz's Wonderful Trinity' and 'Remarkable Trinity on North Korea's contemporary strategy'. On the basis, three elements are connected to one of three groups in society; the people, the military, and the government. In order to apply the Clausewitz's Trinitarian analysis into Kim Jong Il's 'Military-First' strategy, two case studies (Missile and Nuclear strategy) were examined. The finding of this study is that Clausewitzian dictum in the 19th century is still valid in the 21st century as it provided plausible theoretical framework to explain the North Korean contemporary military strategy with a reminder that the nature and logic of war are fixed in the socially constructed state.

• 전기학회논문지
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• 제66권12호
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• pp.1913-1920
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• 2017

Software Defined Networking creates totally new concept of networking and its applications which is based on separating the application and control layer from the networking infrastructure as a result it yields new opportunities in improving the network security and making it more automated in robust way, one of these applications is Denial of Service attack mitigation but due to the dynamic nature of Denial of Service attack it would require dynamic response which can mitigate the attack with the minimum false positive. In this paper we will propose a new mitigation Framework for DDoS attacks using Software Defined Networking technology to protect online services e.g. websites, DNS and email services against DoS and DDoS attacks.

• 한국도서관정보학회지
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• 제21권
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• pp.231-252
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• 1994

Library authorities are responsible for allocating its resources to best achieve library goals. This means the question of benefits and costs for library activities, as well as a n.0, pplication of economic theory to it. To consider these, this study dealt with theoretical analysis: 1) the nature of economic models, 2) economic theory to library activities, 3) and its a n.0, pplicability. However, economic model method allows us to use an analytic technique that is founded on library production and consumption. Thus, its major contribution is creation of a framework or system for maximizing the efficient library activities.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권8호
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• pp.3865-3883
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• 2016

Infrastructure as a Service (IaaS) encapsulates computer hardware into a large amount of virtual and manageable instances mainly in the form of virtual machine (VM), and provides rental service for users. Currently, VM anomaly incidents occasionally occur, which leads to performance issues and even downtime. This paper aims at detecting anomalous VMs based on performance metrics data of VMs. Due to the dynamic nature and increasing scale of IaaS, detecting anomalous VMs from voluminous correlated and non-Gaussian monitored performance data is a challenging task. This paper designs an anomaly detection framework to solve this challenge. First, it collects 53 performance metrics to reflect the running state of each VM. The collected performance metrics are testified not to follow the Gaussian distribution. Then, it employs independent components analysis (ICA) instead of principal component analysis (PCA) to extract independent components from collected non-Gaussian performance metric data. For anomaly detection, it employs multi-class Bayesian classification to determine the current state of each VM. To evaluate the performance of the designed detection framework, four types of anomalies are separately or jointly injected into randomly selected VMs in a campus-wide testbed. The experimental results show that ICA-based detection mechanism outperforms PCA-based and LDA-based detection mechanisms in terms of sensitivity and specificity.

• 대한지구과학교육학회지
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• 제16권1호
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• pp.87-102
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• 2023

이 연구의 목적은 지역사회의 시민 강사 등이 지역사회 문제에 기반한 초등학생용 기후변화교육 프로그램을 개발할 때 반드시 포함해야 할 내용을 분석틀로 제안하는 것으로, 이 분석틀의 개발을 위해 현장 및 기후환경교육 전문가 24명에게 총 7번의 자문을 받았다. 최종 분석틀은 문항별 내용타당도는 I-CVI와 S-CVI 계수로, 전문가 패널 간 신뢰도는 Fleiss' Kappa 계수를 통계적으로 검증하였다. 최종 분석틀은 3개의 분석 영역(프로그램 목적 - 프로그램 내용 - 프로그램 평가)과 7개의 분석 항목, 7개의 분석 지표와 세부 설명으로 구분하여 개발했다. 특히 분석 지표에 대한 세부 설명란을 추가하여 내용타당도와 신뢰도를 높임으로써 객관적인 분석틀로서의 성격을 확고히 했다. 이 연구에서 제안한 지역사회 기반 초등학생용 기후변화교육 프로그램 분석틀이 체계적인 프로그램 개발에 도움이 되길 기대한다.