• Journal of Korea Multimedia Society
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• v.13 no.5
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• pp.771-779
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• 2010

Sketch-based interface is used more and more in developing animation contents. Particularly, there has been a system where the user's sketch inputs are interpreted and presented as live motions. In this study¸ it is to design an animated flight learning system using sketch-based interface. Most of the flights include movements in three-dimensional space and have unique and complex flight patterns. In other words, the actual flight movements not only include acceleration and deceleration, rising and falling, straight or circular flying, but also may include combinations of two or more movements as they simultaneously occur such as accelerating while falling, or slowing down while rising, and so forth. And, currently existing flight learning animation system cannot present such complex flight patterns to the pilots of aircrafts or to those personnel for air-traffic controllers. Hence, it is to be shown in this study that unit-path sketch animation method can support quicker ways to create animations to present those complex flight movements, and requires lesser inputs compared to the existing frame-based animation method. Also, the flight learning system suggested uses the flight-route realization tasks to reflect complex flight patterns, and therefore creates animations close to real as possible.

• Journal of Advanced Navigation Technology
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• v.15 no.2
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• pp.319-325
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• 2011

In this paper, we propose the matching model between virtual reality and the real-world for peoples with limited mobility. The proposed matching model is consist of four parts: wearable input device-based PC control, hand-motion pattern recognition, application software, and matching between virtual reality and the real-world. To recognition mouse functions and hand-motion patterns from six-axis coordinate of wearable input device, RF communication is used. In addition, to easily control the real-world, virtual reality has been implemented with realism of the real-world. Some experiments are conducted so as to verify the proposed model, and as a result, hand-motion recognition as well as virtual reality control are well performed.

• Convergence Security Journal
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• v.10 no.4
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• pp.61-67
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• 2010

Information communication the dazzling development life was convenient with to join in and planned an industrial technical advance. Not only the nation with technical security of the enterprise between the description competition keenly in the present point of view which rushes to technical competitive time of the nation between is become accomplished. The damage which is caused by with outflow of industrial secrecy that company prevents this effectively because is threatening at the degree which will threaten the existence of the nation and the technique which manages is become accomplished with the domestic foreign enemy. Prevents an industrial secret outflow the research for on a large scale with physical security technique and information security to be divided, is researched.

• Korean Journal of Labor Studies
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• v.17 no.1
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• pp.209-242
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• 2011

본 연구는 현대하이스코 순천공장과 포스코 광양제철소에서의 비정규직 조직화 비교를 통해 사내하청 노동조합의 조직화에 영향을 미치는 작업장 요인과 지역사회 요인들을 살펴보고자 하였다. 기존의 비정규직 노동자 조직화를 비롯한 노동운동, 노동조합 관련 연구들은 대부분 '생산의 정치'의 영역에서 비롯된 '작업장' 요인들에 초점을 맞추고 있다. 그러나 비정규직 노동자 조직화에 대한 보다 분석을 보다 발전시키기 위해서는 작업장뿐만 아니라 '스케일의 정치'가 작동하는 공간인 '지역사회' 또한 분석의 단위로 통합되어야 한다. 따라서 본 연구는 작업장에서의 정규직 및 비정규직 노동자들에 대한 관리통제와 실천뿐만 아니라, 지역사회의 다양한 요인들이 비정규직 노동자들의 조직화 시도에 어떠한 영향을 미치는지를 검토하고자 한다. 두 사례에서 사내하청 노동자들은 철강산업이라는 산업부문과 사내하청 고용형태에 속한다는 공통점 외에도 낮은 수준의 임금과 노동조건하에서 강한 불만을 지니고 있었으며, 원청 및 사내하청 업체의 강한 통제하에 놓여 있었다는 공통점을 지닌다. 그럼에도 포스코의 경우와 달리 현대하이스코 비정규직 노동자들은 격렬한 대중투쟁과 지역사회의 지원 속에서 성공적인 조직화를 이룰 수 있었다. 사내하청 노동조합 결성 과정 또한 상이하였다. 현대하이스코의 경우 누적된 사내하청노동자들의 불만이 계약해지를 계기로 일순간 터져 나오면서 작업장 점거농성을 비롯한 대중투쟁과 결합하였다. 나아가 현대하이스코 비정규직지회는 지역사회운동과의 연대를 통해 작업장의 문제를 전체 비정규직 노동문제로 확대해 나갔다. 반면, 포스코의 경우 초기 조직화의 범위가 제한적이었고 대중투쟁 또한 강하게 나타나지 않았으며 지역사회의 관심과 지원 또한 약하게 나타났다. 이상과 같이 두 사례를 비교 검토함으로써 비정규직의 조직화에 있어 비정규직 자체 동원기제와 정규직의 지원은 여전히 중요하게 작용하지만, 이것이 확보되지 않을 경우 지역사회를 비롯한 외부의 지원이 일정하게 작용함을 살펴볼 수 있었다. 그러나 이 역시 지역사회구조 및 지역사회운동의 성격에 영향을 받는 것으로 나타났다.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.37-37
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• 2018

메콩강 유역은 중국, 미얀마, 라오스, 태국, 캄보디아 및 베트남의 6개국이 공유하는 국제하천으로 각국의 안보, 경제성장 및 발전 등에 밀접한 영향을 주며 유역의 개발과정에서 국가별 개발전략 및 경제발전의 차이, 환경문제에 대한 입장의 차이로 인한 다양한 문제가 발생하고 있다. 특히 상류인 중국의 댐 건설 이후 갈수기에 메콩 강 하류지역의 수위가 매년 하락하는 현상이 발생하면서 중국의 수자원 무기화에 대한 우려가 심화되고 있다. 이와 같은 수자원의 통제는 메콩 강 하류 국가의 홍수나 가뭄조절에 대한 대응을 어렵게 하며 최근 급격한 기후변화로 인한 재난위험의 증가는 이에 대한 우려를 심화시키고 있다. 이에 대한 대응으로 하류 국가들 또한 메콩 강 곳곳에 댐을 건설하려는 계획을 수립하고 있어 메콩 강 유역의 무분별한 댐 건설에 대한 문제들이 제기되고 있다. 이러한 문제의 해결방안 마련을 위해서는 기후변화 또는 유역개발이 사회 경제 및 환경에 미치는 영향에 대한 사전분석이 매우 중요하며 기본적으로 강우-유출해석 시스템의 구축을 통한 사회 경제적 영향에 대한 예측 및 검토는 정책결정 및 수자원관리측면에서 매우 중요한 요소이다. 본 연구에서는 메콩강 유역을 대상으로 준 분포형 모형인 SWAT 모형에 전 세계적으로 구축되어 제공되는 범용 공간정보자료 및 기후변화 시나리오를 이용하여 강우-유출해석 시스템을 구축하고 메콩강 유역의 2100년까지의 미래 유출변화를 분석하였다. 이를 위해 메콩강유역을 총 33개의 소유역으로 분할하고 HadGEM의 RCP45 및 RCP85 기후변화시나리오를 소유역별 과거자료를 이용한 임의보정의 과정을 거쳐 적용하였다. 본 연구의 결과는 미래 메콩강 유역개발 및 수자원 관리 및 다양한 시나리오 적용을 위한 기초자료로 유용하게 활용될 수 있을 것으로 판단되며, 앞서 밝힌바와 같이 현재 메콩 강은 댐에 의한 수자원 통제의 영향이 커지고 있음에도 불구하고 방류데이터 등의 비공개로 이에 대한 영향은 고려하지 못하는 한계가 존재하기에 향후 이와 관련한 시나리오의 적용 등 추가적인 연구 또한 필요하다고 판단된다.

• The Journal of Society for e-Business Studies
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• v.23 no.4
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• pp.153-169
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• 2018

Previous e-financial anomalies analysis and detection technology collects large amounts of electronic financial transaction logs generated from electronic financial business systems into big-data-based storage space. And it detects abnormal transactions in real time using detection rules that analyze transaction pattern profiling of existing customers and various accident transactions. However, deep analysis such as attempts to access e-finance by insiders of financial institutions with large scale of damages and social ripple effects and stealing important information from e-financial users through bypass of internal control environments is not conducted. This paper analyzes the management status of e-financial security programs of financial companies and draws the possibility that they are allies in security control of insiders who exploit vulnerability in management. In order to efficiently respond to this problem, it will present a comprehensive e-financial security management environment linked to insider threat monitoring as well as the existing e-financial transaction detection system.

• Journal of Cadastre & Land InformatiX
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• v.49 no.1
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• pp.5-15
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• 2019

This study is to review methodological limitations of previous studies, propose Tobit Model as an analysis model. We model used annual rent-free as dependent variable and considering to contract characteristics and building characteristics as independent variable. We model was consisted to the three model as follow: Basic model, Time control model, Quadratic model. As a result of the analysis, existing variables revealed through previous studies such as contract period, contract area, total floor area, and building age were all statistically significant. These results were robust when considering time effects. Also, floor area and annual rent-free was quadratic relationship by inverse U shape. This result provide to methodological contribution for related research. Also, provide to more accurate information for participants in seoul office market.

• Journal of the Economic Geographical Society of Korea
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• v.12 no.4
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• pp.319-343
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• 2009

This paper considers some kinds of socio-spatial constraints and strategies for overcoming them which immigrant workers in Korea have experienced in their work-place and life-space, with an analysis of questionnaire data and of direct interview materials on them. Though they appear somewhat satisfactory or positive with their work-place, this can be seen as a hypocritical or false attitude rather than a real one: they are forced to work with long hours (more than 70 hours per week) and rigid controls in the other' territory. Their daily life-spaces also are severe: they can be hardly embedded in an existing community with a sense of place due to serious institutional and interaction constraints, even though they seem to have a basic mobility to survive in life-spaces. In order to escape or alleviate such local constraints, they try to constitute multi-scalar (local, trans-regional, and transnational) networks, and to find informations and means to resolve or cope with them. However, this kind of endeavors of immigrant workers to make a trans-national network and social space has a limitation for them to be free entirely from constraints, which might be strengthened with a lack of geographical knowledge of them. Then immigrant workers in Korea live ineluctably with not only hybrid national identity but also with disturbed local identity in an aliened workplace and life-spaces.

• Journal of Korean Tunnelling and Underground Space Association
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• v.23 no.6
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• pp.549-558
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• 2021

In order to keep infrastructures such as tunnels and underground facilities safe, cracks of concrete lining in tunnel should be detected by regular inspections. Since regular inspections are accomplished through manual efforts using maintenance lift vehicles, it brings about traffic jam, exposes works to dangerous circumstances, and deteriorates consistency of crack inspection data. This study aims to provide methodology to automatically extract cracks from tunnel concrete lining images generated by the existing tunnel image acquisition system. Specifically, we train a deep learning based semantic segmentation model with open dataset, and evaluate its performance with the dataset from the existing tunnel image acquisition system. In particular, we compare the model performance in case of using all of a public dataset, subset of the public dataset which are related to tunnel surfaces, and the tunnel-related subset with negative examples. As a result, the model trained using the tunnel-related subset with negative examples reached the best performance. In the future, we expect that this research can be used for planning efficient model training strategy for crack detection.

• Journal of The Korean Association For Science Education
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• v.26 no.3
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• pp.367-375
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• 2006

This study investigated the effects of varying visuals in drawing and writing as methods to assist students in connecting and integrating multiple external representations provided in learning the particulate nature of matter. Seventh graders (N=233) at a coed middle school were assigned to control, static drawing (SO), dynamic drawing (DD), static writing (SW), and dynamic writing (DW) groups. The students were taught about "Boyle's Law" and "Charles's Law" for two class periods. Two-way ANCOVA results revealed that the scores of a conception test for the two drawing (SD, DD) groups and the two writing (SW, DW) groups were significantly higher than those for the control group. Within the writing groups, students of lower spatial visualization ability in the DW group scored significantly higher than those in the SW group. However, no significant differences were found in the scores of the conception test for the two drawing (SD, DD) groups regardless of students' visualization ability. Researchers also found that most students in both DD and DW groups had respectively positive perceptions of dynamic visuals in drawing or writing.