• Title/Summary/Keyword: 생략 위치

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Urban Drainage Simplification Using Meta-channel Concept (등가하천 개념을 이용한 관망 간략화 기법에 대한 연구)

  • Kim, Hwan-Seok;Pak, Gi-Jung;Yoon, Jae-Young
    • Proceedings of the Korea Water Resources Association Conference
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    • 2007.05a
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    • pp.1194-1199
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    • 2007
  • 본 연구에서는 도시배수관망의 간략화 모의 시 지선을 단순 생략하는 것이 아니라 2차원 관망을 1차원으로 전환시키는 방법인 등가하천 개념을 도입하여 도시유역의 유출량 산정에 있어서 여러 지선들을 개별적으로 모의하지 않으면서도 실제 존재하는 지선들의 효과를 고려할 수 있는 방법을 개발하고자 하였다. 자연하천에 대해 개발된 등가하천 개념은 최근의 수문모형의 경향인 물리적 분포형 모형의 복잡성을 피하면서 전통적인 개념적 집중형 모형이 가지는 간편성을 살리고 그 것이 가지고 있는 선형가정의 한계를 극복하기 위한 방안으로서 제안된 방법이다. 등가하천 개념을 도입하여 개발된 모형은 종국적으로 강우-유출관계에 있어서 강우의 크기, 선형 및 비선형성, 유역면적 등이 미치는 영향을 분석하기위한 도구로 개발되었으며, 본 연구에서는 출구로부터 동일 거리 s에 위치한 지점에서의 배수관망의 공간적인 분포 및 집중패턴을 파악하는 폭함수(width function, n(s))와 면적함수(area function, M(s))를 이용하여 관망을 간략화 하였다. 등가관의 수리기하조건 결정은 유역이 정상상태에 도달했을 경우에 대해서 이루어지게 되며 정상상태 모의를 통해 개별 관망단면들에 대해 얻어진 유량(Q), 면적(A), 수심(y) 자료간의 상관관계를 유추하여 Q(A), A(y) 함수를 유도하게 되면 종국적으로 관로홍수추적에 이용되는 지배방정식의 매개변수인 파속계수(c) 및 확산계수(D)를 계산할 수 있게 된다. 본 연구에서는 대상 유역으로 군자 배수구역을 선정하여 유역의 특성과 관망 자료를 수집하고 간략화 기법을 적용한 결과를 분석 하였다.다. 21세기 문화산업에서 우리가 판단하게 될 디자인의 가치는 계몽의 원리에 대한 '역사성'과 '현재성'의 변증법에 달려있는 것이며, 새로운 철학, 새로운 문명, 새로운 세계를 열어가는 것이다.r$ (地理志)에는 추현리와 이미 외리를 언급하면서 상주의 자기제작의 위상을 짐작하는 기록이 언급되면서 전국의 상품의 절반을 담당하고 있었음을 알 수 있었다. $\ulcorner$경상도지리지$\lrcorner$(慶尙道地理志)에는 상주가 8곳으로 1/3의 자기 생산을 담당하고 있었다. $\ulcorner$경상도지리지$\lrcorner$(慶尙道地理志)에는 $\ulcorner$세종실록$\lrcorner$(世宗實錄) $\ulcorner$지리지$\lrcorner$(地理志)와 동년대에 동일한 목적으로 찬술되었음을 알 수 있다. $\ulcorner$경상도실록지리지$\lrcorner$(慶尙道實錄地理志)에는 $\ulcorner$세종실록$\lrcorner$(世宗實錄) $\ulcorner$지리지$\lrcorner$(地理志)와의 비교를 해보면 상 중 하품의 통합 9개소가 삭제되어 있고, $\ulcorner$동국여지승람$\lrcorner$(東國與地勝覽) 에서는 자기소와 도기소의 위치가 완전히 삭제되어 있다. 이러한 현상은 첫째, 15세기

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Curvature stroke modeling for the recognition of on-line cursive korean characters (온라인 흘림체 한글 인식을 위한 곡률획 모델링 기법)

  • 전병환;김무영;김창수;박강령;김재희
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.33B no.11
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    • pp.140-149
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    • 1996
  • Cursive characters are written on an economical principle to reduce the motion of a pen in the limit of distinction between characters. That is, the pen is not lifted up to move for writing a next stroke, the pen is not moved at all, or connected two strokes chance their shapes to a similar and simple shape which is easy to be written. For these reasons, strokes and korean alphabets are not only easy to be changed, but also difficult to be splitted. In this paper, we propose a curvature stroke modeling method for splitting and matching by using a structural primitive. A curvature stroke is defined as a substroke which does not change its curvanture. Input strokes handwritten in a cursive style are splitted into a sequence of curvature strokes by segmenting the points which change the direction of rotation, which occur a sudden change of direction, and which occur an excessive rotation Each reference of korean alphabets is handwritten in a printed style and is saved as a sequence of curvature strikes which is generated by splitting process. And merging process is used to generate various sequences of curvature strikes for matching. Here, it is also considered that imaginary strokes can be written or omitted. By using a curvature stroke as a unit of recognition, redundant splitting points in input characters are effectively reduced and exact matching is possible by generating a reference curvature stroke, which consists of the parts of adjacent two korean alphasbets, even when the connecting points between korean alphabets are not splitted. The results showed 83.6% as recognition rate of the first candidate and 0.99sec./character (CPU clock:66MHz) as processing time.

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A Comparative Study of Knowledge Integration in the Textbook and Students' Mental Model about the Phases of the Moon (달의 위상 변화에 관한 교과서의 지식 통합 과정 및 학생 정신 모델의 비교 연구)

  • Sung, Na-Hae;Choe, Seung-Urn
    • Journal of the Korean earth science society
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    • v.29 no.2
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    • pp.163-174
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    • 2008
  • In this study, we compared textbook knowledge organization with students' mental models to contribute to a more well-designed instruction scheme. The selected science content was the cause of moon phases. We investigated 9 textbooks and 25 third-year middle school students. Patterns and features in participants' mental models were identified through cross inter-rater data analysis by 9 researchers, including in service teachers and experts in science education. According to the results, observing and modeling are the main activities engaged in when dealing with moon phases. The activities consisted of such concepts as: lunar revolution, the sun's parallel rays, the illuminated half of moon, and the relative positions of the sun, moon, and earth. Each concept involved inquiry skills such as: creating and manipulating models, utilizing the relationship between time and space, and communicating. However, the most important skills which are required for authentic scientific inquiry, namely controlling variables and formulating hypotheses, were missing. We categorized students' mental models into three types: scientific models, mixed models, and alternative models. The knowledge structure of each of the models was also discussed in this paper. Consequently, it was found that, typically, students were not given enough opportunities to strengthen the connection among ideas.

Difference Edge Acquisition for B-spline Active Contour-Based Face Detection (B-스플라인 능동적 윤곽 기반 얼굴 검출을 위한 차 에지 영상 획득)

  • Kim, Ga-Hyun;Jung, Ho-Gi;Suhr, Jae-Kyu;Kim, Jai-Hie
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.47 no.6
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    • pp.19-27
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    • 2010
  • This paper proposes a method for enhancing detection performance and reducing computational cost when detecting a human face by applying B-spline active contour to the frame difference of consecutive images. Firstly, the method estimates amount of user's motion using kurtosis. If the kurtosis is smaller than a pre-defined threshold, it is considered that the amount of user's motion is insufficient and thus the contour fitting is not applied. Otherwise, the contour fitting is applied by exploiting the fact that the amount of motion is sufficient. Secondly, for the contour fitting, difference edges are detected by combining the distance transformation of the binarized frame difference and the edges of current frame. Lastly, the face is located by assigning the contour fitting process to the detected difference edges. Kurtosis-based motion amount estimation can reduce a computational cost and stabilize the results of the contour fitting. In addition, distance transformation-based difference edge detection can enhance the problems of contour lag and discontinuous difference edges. Experimental results confirm that the proposed method can reduce the face localization error caused by the contour lag and discontinuity of edges, and decrease the computational cost by omitting approximately 39% of the contour fitting.

의사소통식 영어 발음지도

  • 김정렬
    • Proceedings of the KSPS conference
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    • 1997.07a
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    • pp.45-60
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    • 1997
  • 의사소통식 영어교수법은 Widdowson (1978)이래, 과거 20여 년간의 여러 외국어 교수 방법들을 (침묵식 교수법, Gattegno; 자연적 교수법, Terrell & Krashen; 전신반웅 교수법, Asher; 집단언어 학습법, Curran; 암시적 교수법, Lozanov) 거치면 서, 이들 중에서 의사소통을 중심으로 한 여러 가지 방법을 총괄하여, 명실공히 외국어 교육 방법의 중심으로 그 자리를 갈수록 확고히 잡아가고 있다. 의사소통식 교수법은 우선 언어란 의사소통을 위한 수단이며, 의사소통은 사회 속에서 일어나는 사회 언어적 행위로 본다. 따라서, 외국어 교육의 목적을 무엇보다도 의사소통 기능의 숙달에 두는 것이다. 일반적인 의사소통 상황을 보면 발화내용의 문법적 정확성은 그 상황에 대한 내용의 적절성 여부에 비하면, 부수적인 것이다. 예를 들면, 사과를 하는 의사소통기능을 공부하면서, 사과하는 표현으로 Sorry라는 말을 썼다고 하자. 이때, 영어는 주어 생략 언어가 아니기 때문에, Sorry 대신에 문법적으로 완전한 문장인 I'm sorry 로 표현해야 한다는 문법적인 문제보다는 사과하는 표현이 그 상황에서 적절하게 쓰인 것인지를 묻는 것에 초점을 맞춘 것이 의사소통식 교수 방법이다. 현재, 초등학교 16 종 영어 교과서도 의사소통 기농들을 적절한 상황에 맞춰서 의사소통식 교수 방법의 정신을 비교적 잘 반영하고 있다. 그러나, 발음에서만큼은 아직도 의사소통식 교수방법을 무시하고, 정확한 발음의 명시적인 설명이나, 예시에 그치는 경향이 뚜렷하다. 이러한 경향은 교육부에서 고시한 제6차 교육과정과 이에 따른 해설서에서 되풀이되고 있다. 발음지도에 많은 관심을 기울여 많은 양의 지면을 할애하고 있음에도 불구하고, 전후에 흐르는 의사 소통식 영어교육의 맥을 완전히 끊고, 단지 정확한 발음의 해부학적 예시와 기술에 그 치고 있다 (임영재 외 1995). 이러한 발음기관의 단면도를 이용한 해부학적 발음의 예시는 특정 자음의 정확한 혀의 위치를 알려 줄 수는 있지만, 발음훈련을 대신하지는 못한다. 예를 들어, 자전거를 타고자 하는 사람이 자전거의 페달을 밟았을 때, 그 동력전달 과정을 자세히 소개한 책자를 읽었다고 해서, 자전거를 탈 수 있는 것은 아니다. 역시, 자전거를 타고자 하면, 실제로 타고 넘어지면서 배우게 되는 것이다. 그리고, 발음훈련의 경우 교재의 내용이나 의사소통 기능은 의사소통식으로 가르치면서도 발음만큼은 아직도 원어민의 입모양을 활용한 듣고 따라하기 식의 전통적인 방법의 발음훈련을 계속하고 있다. 이러한 전통적 발음훈련 방법은 구체적으로 다음 장에서 제시되겠지만, 초등학교에서 듣고 따라하기나 듣고 골라내기와 같은 방법으로 발음훈련을 하면, 많은 학생들이 쉽게 지루해 하고, 아마 영어시간 중에서 가장 싫어하는 시간이 발음연습 시간이 될 가능성이 많이 있다. 현재 의사소통식 교수 방법을 모태로 한 교과서에서도 의사소통식 발음지도법을 쓰지 않았다는 것은 새로이 시작하는 초등학교 영어교육에서 아쉬운 점이라 아니할 수 없다. 초등학교 학생들에 대한 발음 지도의 핵심은 그들의 지적, 정서적, 신체적 특징을 잘 고려해야 한다. 초등학교 학생은 지적, 정서적, 신체적으로 성장기에 있어서, 호기심이 많고, 모방성이 강하며, 감수성이 예민하여 마음에 상처를 받기도 쉽다. 그리고, 무엇보다도, 끊임없이 신체적으로 움직이고 싶어한다. 이러한 학생들의 특정 을 반영하여 발음을 지도하는 길은 역시 초등학교 교과서의 다른 영역들처럼, 학생들은 움직이는 활동을 하면서 재미를 느끼고, 교사는 이들 활동을 통해서 교수목표를 성취하는 쪽으로 맞추어야 한다. 본 논문에서는 먼저 발음지도가 필요한 이유와 요인을 살펴본다. 그리고, 전통적인 발음지도 방법을 일별해 보고, 의사소통식 발음지도법을 제시하는 순으로 논의를 전개하기로 한다.

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Fast Algorithm for Disparity Estimation in ATSC-M/H based Hybrid 3DTV (ATSC-M/H 기반의 융합형 3DTV를 위한 양안시차 고속 추정 알고리즘)

  • Lee, Dong-Hee;Kim, Sung-Hoon;Lee, Jooyoung;Kang, Dongwook;Jung, Kyeong-Hoon
    • Journal of Broadcast Engineering
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    • v.19 no.4
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    • pp.521-532
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    • 2014
  • ATSC-M/H based hybrid 3DTV, which is one of the service compatible 3DTV system, has considerable quality gap between the left and right views. And CRA(Conditional Replenishment Algorithm) has been proposed to deal with the issue of resolution mismatch and improve the visual quality. In CRA, the disparity vectors of stereoscopic images are estimated. The disparity compensated left view and simply enlarged right view are compared and conditionally selected for generating the enhanced right view. In order to implement CRA, a fast algorithm is strongly required because the disparity vectors need to be obtained at every layer and the complexity of CRA is quite high. In this paper, we adopted SDSP(Small Diamond Search Pattern) instead of full search and predicted the initial position of search pattern by examining the spatio-temporal correlation of disparity vectors and also suggested the SKIP mode to limit the number of processing units. The computer simulation showed that the proposed fast algorithm could greatly reduce the processing time while minimizing the quality degradation of reconstructed right view.

The Expression of Landform in Feng-shui Map in Chinese Feng-shui Manual Jiriinjasuji (풍수서(風水書) "지리인자수지(地理人子須知)" 산도(山圖)의 지형표현 연구)

  • Lee, Hyung-Yun;Sung, Dong-Hwan
    • Journal of the Korean association of regional geographers
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    • v.16 no.1
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    • pp.1-15
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    • 2010
  • A feng-shui map(山圖) represents the most ideal natural landform on a map of feng-shui space model, highlighting propitious spots and grave sites in terms of feng-shui. This study made an analysis into feng-shui maps featured in the Chinese feng-shui manual Jiriinjasuji published in the Ming dynasty of China and did research on the following points regarding the traits of landform expressions: viewpoints of feng-shui maps, perspective points, center-oriented maps, double map scales, mountain theories, detailed expressions of propitious spots, etc. The major characteristics of landform expressions in the Chinese feng-shui manual Jiriinjasuji are as follows: the viewpoint technique was aerial one; the maps were center-oriented, that is to say, the center of grave sites or propitious spot was depicted in detail; and often the important terrains around grave sites were exaggerated or delete compared with real landforms. In addition, other vital landforms not observed from grave sites were depicted with viewpoints moved and were represented in greater details' The part of mountain theories had the following points as their main subject matter: geographical locations, overall orientations of mountain ranges, topographical traits, grave seat directions, surrounding terrains and extent of fortune-bringing. The directions of the maps were relative and there was no definite concept of scales. But, there are many cases where the maps made use of the double scale technique when expressing the terrains that have propitious space, logistical cities or directional importance. Furthermore, they often utilized multiple scale in expressing near views, mid-range views and distant views.

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The Effects of Alcohol on Psychomotor Skill and Driving Behaviors (알코올이 정신운동 및 운전행태에 미치는 영향)

  • Ryu, Jun Beom;Shin, Yong Kyun;Lee, Won Young
    • Journal of Korean Society of Transportation
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    • v.30 no.6
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    • pp.27-36
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    • 2012
  • In Korea, 28,641 cases of traffic accidents were caused by drunk driving in 2010. These statistics accounted for 12.62% of total number of traffic accidents. Moreover, the percentages of deaths and injuries from them were nearly 15% of those from whole traffic accidents. While police has emphasized enforcement efforts in order to reduce drunk driving, culture generous to drunk driving in addition to the absence of an appropriate intervention system for habitual drunk drivers have contributed to the increasing number of the drunk driving accidents in Korea. This study examined specific behavioral changes in drunk driving by comparing drivers' behavior pattern in non-alcoholic condition to those in alcoholic condition, using a psychomotor test and a driving simulator. In the psychomotor test measuring participants' reactions to the target stimulus, it was revealed that participants' correct responses were decreased, false responses were increased, and no responses also were increased after drinking. Furthermore, in the driving simulator performance after drinking, not only driving speed was faster but also the deviation of an accelerator pedal pressure and of the vehicle's lateral position were much increased. These results indicated that alcohol consumption would impair visio-cognitive ability and deteriorate driving safety. Finally, the implications and limitations of our findings and suggestions for the future research were discussed.

Double-Gauss Optical System Design with Fixed Magnification and Image Surface Independent of Object Distance (물체거리가 변하여도 배율과 상면이 고정되는 이중 가우스 광학계의 설계)

  • Ryu, Jae Myung;Ryu, Chang Ho;Kim, Kang Min;Kim, Byoung Young;Ju, Yun Jae;Jo, Jae Heung
    • Korean Journal of Optics and Photonics
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    • v.29 no.1
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    • pp.19-27
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    • 2018
  • A change in object distance would generally change the magnification of an optical system. In this paper, we have proposed and designed a double-Gauss optical system with a fixed magnification and image surface regardless of any change in object distance, according to moving the lens groups a little bit to the front and rear of the stop, independently parallel to the direction of the optical axis. By maintaining a constant size of image formation in spite of various object-distance changes in a projection system such as a head-up display (HUD) or head-mounted display (HMD), we can prevent the field of view from changing while focusing in an HUD or HMD. Also, to check precisely the state of the wiring that connects semiconductor chips and IC circuit boards, we can keep the magnification of the optical system constant, even when the object distance changes due to vertical movement along the optical axis of a testing device. Additionally, if we use this double-Gauss optical system as a vision system in the testing process of lots of electronic boards in a manufacturing system, since we can systematically eliminate additional image processing for visual enhancement of image quality, we can dramatically reduce the testing time for a fast test process. Also, the Gaussian bracket method was used to find the moving distance of each group, to achieve the desired specifications and fix magnification and image surface simultaneously. After the initial design, the optimization of the optical system was performed using the Synopsys optical design software.

Overseas Address Data Quality Verification Technique using Artificial Intelligence Reflecting the Characteristics of Administrative System (국가별 행정체계 특성을 반영한 인공지능 활용 해외 주소데이터 품질검증 기법)

  • Jin-Sil Kim;Kyung-Hee Lee;Wan-Sup Cho
    • The Journal of Bigdata
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    • v.7 no.2
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    • pp.1-9
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    • 2022
  • In the global era, the importance of imported food safety management is increasing. Address information of overseas food companies is key information for imported food safety management, and must be verified for prompt response and follow-up management in the event of a food risk. However, because each country's address system is different, one verification system cannot verify the addresses of all countries. Also, the purpose of address verification may be different depending on the field used. In this paper, we deal with the problem of classifying a given overseas food business address into the administrative district level of the country. This is because, in the event of harm to imported food, it is necessary to find the administrative district level from the address of the relevant company, and based on this trace the food distribution route or take measures to ban imports. However, in some countries the administrative district level name is omitted from the address, and the same place name is used repeatedly in several administrative district levels, so it is not easy to accurately classify the administrative district level from the address. In this study we propose a deep learning-based administrative district level classification model suitable for this case, and verify the actual address data of overseas food companies. Specifically, a method of training using a label powerset in a multi-label classification model is used. To verify the proposed method, the accuracy was verified for the addresses of overseas manufacturing companies in Ecuador and Vietnam registered with the Ministry of Food and Drug Safety, and the accuracy was improved by 28.1% and 13%, respectively, compared to the existing classification model.