• 제목/요약/키워드: 복원 사례

검색결과 431건 처리시간 0.033초

Herbal Flora and Succession of Stream Under Management Conditions After its Restoration - Case Study of Yangjaecheon in Seoul - (자연형 하천 복원공사 이후 식생관리에 의한 초본 식물상과 천이 - 서울시 양재천 사례 연구 -)

  • Lee, Yong-Ho;Kang, Byeung-Hoa;Na, Chae-Sun;Yang, Geum-Yeol;Min, Tai-Gi;Hong, Sun-Hee
    • Korean Journal of Weed Science
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    • 제31권1호
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    • pp.49-70
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    • 2011
  • This study was conducted to examine the change of flora and plant species diversity between 2005 and 2010 in Yangjaecheon (stream) which was divided among three different types of vegetation management method; ecological vegetation management (weeding vines and invasive plants; EVM), plant cultivation (PC) and uncared for vegetation (UC). There were total 478 taxa, composed by 429 spontaneous taxa and 49 cultivated taxa in 2005 and total 424 taxa composed by 318 spontaneous taxa and 106 cultivated taxa in 2010. In spontaneous plants, 201 taxa were distributed over total area, 197 taxa were distributed in only EVM area, 10 taxa in only PC area and 59 taxa in only UC area. Also, the most dominant family (Asteraceae${\rightarrow}$Poaceae) and number of rare taxa (reduced) and wide distributed taxa (increased) was changed from 2005 to 2010. The rate of perennial taxa was found to be increased in only EVM area. In conclusion, EVM is thought to be a more efficient method for plant species diversity of restored stream.

Improvement and Evaluation of Resident Satisfaction Degree on Rural Village Development Project by Rural Territory (지역유형을 고려한 농촌마을종합개발사업의 주민평가 및 개선방안)

  • Choi, Young-Wan;Park, Jeong-Won;Yoon, Yong-Cheol;Kim, Young-Joo
    • Journal of agriculture & life science
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    • 제45권6호
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    • pp.227-235
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    • 2011
  • This research had selected current rural village development projects with the representative meaning of rural regional development projects in order to analyze results of projects and various policies of the government to enhance the quality of resident life and to develop rural regions. For the analysis, this research had selected 2 districts of the case study in Gyeongnam-province and Jeonnam-province, respectively. In the result of the satisfaction analysis on the projects, it was considerably difficult to analyze satisfaction degree by using a clear distinction of each region type when promoting overall project. However, this research confirmed that there were some differences about residents' understanding of the project and satisfaction degree in the process of projects according to the regional characteristics (rural and mountain areas). In general, two districts' residents of rural areas expressed relatively more negative feedbacks in process of the project compared to two district residents of mountain areas. This research suggested that it is needed to have residents' understanding of the project, a restoration of village community spirit to help each other and to cooperate, fostering a desirable leader, establishing effective village regulations, transition into an open and inclusive attitude, promoting rural village development project, and realization of the operating method in order to have an amicable project process in the future.

Estimating Stability Indices from the MODIS Infrared Measurements over the Korean Peninsula (MODIS 적외 자료를 이용한 한반도 지역의 대기 안정도 지수 산출)

  • Park, Sung-Hee;Chung, Eui-Seok;Koenig, Marianne;Sohn, B.J.
    • Korean Journal of Remote Sensing
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    • 제22권6호
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    • pp.469-483
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    • 2006
  • An algorithm was developed to estimate stability indices (SI) over the Korean peninsula using Terra Moderate Resolution Imaging Spectroradiometer (MODIS) infrared brightness temperatures (TBs). The SI is defined as the stability of the atmosphere in the hydrostatic equilibrium with respect to the vertical displacements and is used as an index for the potential severe storm development. Using atmosphere temperature and moisture profiles from Regional Data Assimilation and Prediction System (RDAPS) as initial guess data for a nonlinear physical relaxation method, K index (KI), KO Index (KO), lifted index (LI), and maximum buoyancy (MB) were estimated. A fast radiative transfer model, RTTOV-7, is utilized for reducing the computational burden related to the physical relaxation method. The estimated TBs from the radiative transfer simulation are in good agreement with observed MODIS TBs. To test usefulness for the short-term forecast of severe storms, the algorithm is applied to the rapidly developed convective storms. Compared with the SIs from the RDAPS forecasts and NASA products, the MODIS SI obtained in this research predicts the instability better over the pre-convection areas. Thus, it is expected that the nowcasting and short-term forecast can be improved by utilizing the algorithms developed in this study.

Correlationship Analysis of Physical Stream Assessment (물리적인 하천평가 체계의 상관성 분석)

  • Kim, Ki Heung;Park, Hyun Sub
    • Proceedings of the Korea Water Resources Association Conference
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    • 한국수자원학회 2017년도 학술발표회
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    • pp.546-550
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    • 2017
  • 하천의 수리 및 하도의 특성으로 대표되는 물리적 환경(하도 및 수리 특성)은 생태계 기반으로서 수질특성과 더불어 생물에 미치는 영향이 아주 크다. 따라서 하천의 물리적 환경을 진단하고 평가하는 경우에는 상 중 하류의 위치에 따른 하도의 지형학적 특성과 하천의 규모 및 유량의 크기 등에 따라 하천의 유형을 분류하고 그 유형별 특성에 따라 하천환경의 평가시스템을 구축할 필요가 있다. 1980년 후반 이후에는 세계 각국에서 환경보전, 하천복원 및 하천관리 등 종합적인 하천공학적 관점에서 적용할 수 있는 하천분류체계가 제시되었으며 1990년대 이후 선진국들은 정성적 또는 정량적인 하천의 서식환경 평가시스템을 구축하여 적용하고 있으며 대표적으로 정량적 평가시스템을 운영하는 국가는 독일과 미국이고, 정성적 평가시스템을 운영하는 국가는 영국이며, 호주는 영국과 미국의 평가시스템을 통합한 시스템을 운영하고 있다. 한편, 국내에서는 하천환경에서 생태계 기반인 하천의 물리적 특성(구조)에 대한 평가 및 진단 절차도 없이 시행되고 있는 사례가 대부분이다. 또한 지금까지는 하천의 자연도 평가 연구 등에서 선진국들의 하천환경평가시스템을 여과 없이 적용함으로써 국내의 하천특성을 제대로 반영하지 못하는 문제점을 노출하고 있다. 따라서 국내 하천의 물리환경 평가시스템에서는 생물 서식의 기반이 되는 하천의 하도지형 특성 및 수리특성을 반영할 수 있어야 한다. 하천평가에 앞서 하천유형 분류에 따른 하도특성은 하상경사에 따라서 급경사 하천(high-gradient stream), 중경사 하천(mid-gradient stream), 완경사 하천(low-gradient stream)으로 구분하였으며 하천의 물리환경 평가시스템의 평가영역 및 평가지표는 정량적 평가시스템을 운영하는 독일(LAWA, 2004)과 미국(EPA, 2004)의 연구결과를 참고하여 공통지표를 추출하고, 우리나라의 하천이용 및 정비현황을 반영하여 하천유형을 3가지로 분류하고 각 하천유형에 대하여 3개 영역 10개 평가지표를 5개 등급으로 구분하여 평가시스템을 구축하였다. 하천에 대한 하천 지형특성과 현황을 조사할 항목은 수리 및 하도영역의 6개 항목, 하안영역의 2개 항목, 하천교란 영역 2개 항목으로 3개 영역으로 구분해서 평가하고 그 점수에 따라 1등급은 매우좋음(1등급)상태의 $20>{\sim}18{\geq}$점, 좋음(2등급)상태의 $18>{\sim}14{\geq}$점, 보통(3등급)상태의 $14>{\sim}8{\geq}$점, 나쁨(4등급)상태의 $8>{\sim}14{\geq}$점, 매우나쁨(5등급)상태의 4>점으로 등급을 산정하였다. 매우 좋음의 1등급은 참조하천이며 좋음~매우나쁨의 2등급~5등급은 비교하천으로 구분하였으며 보통보다 높은 경우는 자연하천, 낮은 경우는 인공하천으로 나누어 서식처 기반에 따라 평가체계를 구축하였다. 한국형 하천환경 물리평가 체계가 확실히 구축되기 위해서는 각자의 평가 등급이 적절하게 평가 되는지를 검증해야 하기 때문에, 본 연구에서는 하천유형별 자연하천과 인공하천을 비교 분석하였고 평가 영역별 평가지표를 기준으로 상관분석을 통한 상관성을 분석하고 더 나아가 가중치의 적절성 및 각각의 등급에 미치는 영향을 검토하고자 한다.

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A Study on the Usage of Investigation of Google Cloud Data (Smartphone user-oriented) (구글 클라우드 데이터의 수사활용 방안에 관한 연구 (스마트폰 사용자 중심))

  • Kim, Dongho;Lee, Sangjin
    • Journal of Digital Forensics
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    • 제12권3호
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    • pp.109-120
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    • 2018
  • The smartphone is the communication device that is the most personal to the user, and it keeps a lot of information related to the user and makes information communication with other devices. With these characteristics, forensics on smartphones are one of the most basic methods of investigation in criminal investigations, and have actually contributed to the settlement of the case by providing many clues. However, recently, it is designed to encrypt data stored as a social issue related to the protection of user's personal information, or to delete deleted data or to delete log data together. So, any solutions? In this paper, I try to find the answer from cloud data stored by smartphone user account. Cloud forensics should approach complementary relationships rather than smartphone forensics. There are a lot of data stored in the cloud that can be meaningfully used in the investigation. Online activity information of users, such as Internet usage, YouTube view, and contents purchase information, cloud service such as e-mail, cloud drive, and location information are the most representative data. These data can be unvaluable, but here are some important clues in various types of criminal investigations. In this paper, I propose a method to extract data from the google cloud so that the data can be used for investigation, and to utilize the extracted data for investigation. And it explains the role of the extracted artifacts in the actual investigation business through virtual cases and proves its value.

A Study on Utilization Plan of 'Old Stone Wall' Registered as a Cultural Property Focused on an Old Stone Wall in Sang-Hak Village ('옛담장' 등록문화재의 활용 방안 연구 정읍 상학마을 '다무락'이 들려주는 이야기를 중심으로)

  • Lee, Min Seok;Jeong, Seong Mi
    • Korean Journal of Heritage: History & Science
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    • 제42권4호
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    • pp.50-73
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    • 2009
  • Recently old stone walls were designated as registered cultural properties that meant an extension of categories about cultural properties from a spot area to whole area. Moreover given the changing situation of residential pattern, which is due to rapid social change, this designation can be seen as a significant measure to keep as intact as possible traditional landscapes in agricultural and fishing villages. In this paper, I analyze the symbol system and meaning of old stone walls and attempt to pick out the cultural elements which are related to them. These days we have made efforts to various aspects for which make traditional cultural resources into cultural contents. But many studies had done before emphasized aspects for beauty only. Especially existing studies about an old stone wall was mainly focused on architectural interpretation and tourist route. So we need to build a plot around oral research and need a creative approach for sharing with tourists. Cultural contents combine the original form, potential and capabilities with media by detecting original form of culture and finding out the worth and meaning. In this paper examined the probability of using by investigating a stone wall in Sang-hak Village that is related with recovering of places to live in contemporary society and finding cultural contents. I suggest more creative ways to make cultural properties into tourist resources by considering the possibilities of place marketing using storytelling, based on an analysis of data gathered.

The System of Contents and the Meaning of confucius' philosophy in 「Yu Shu;虞書」 of 『The Book of Documents; 書經』 (『서경(書經)』 「우서(虞書)」의 내용체계와 유학사상적 의미)

  • Ko, Dae-hyuk
    • (The)Study of the Eastern Classic
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    • 제57호
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    • pp.137-168
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    • 2014
  • The purpose of this study is to search for the main content system and Confucian meaning of "Yu Shu;虞書" of "The Book of Documents; 書經". This research covers two things: first, the form of The Book of Documents and the main content system of "Yu Shu". The Book of Documents consists of 4 main dynasties' Shu in ancient chinese history; "Yu Shu" 5 chapters, "Xia Shu; 夏書" 4 chapters, "Shang Shu; 商書" 17 chapters, and "Zhou Shu; 周書" 32 chapters, for a total 58 chapters. This book is organized in the form of six formalities(六體) or ten examples(十例). Second, the Confucian value of The Book of Documents and philosophical meaning of Yu Shu. Yu Shu shows a benign rule(仁政), confucianism ideal politic, as an historic example of a benevolent administration. By this research, we recognize that the tradition of abdication in the confucian society and the way of selecting people are theoretical foundation of politics based on people, rule by virtue and, by extension, a dynastic revolution. In addition, governing a country and rule the world that is treated in Yu Shu are a theory of leadership and moral training as a background of "Da Xue"(大學; Great Learning). Furthermore, Xiao(孝;filial piety) emphasized on this book is the main virtue of leaders and core value of practical action among the human relation. by extension, we recognize that the "Yu Shu" is the origin of "Xiao Jing; 孝經".

A Study on the Ecocentric Worldview of Elementary School Students (초등학교 4-6학년 학생들의 생태중심 세계관에 대한 연구)

  • Kim, Hee-Seok;Paik, Seoung-Hey
    • Journal of Korean Elementary Science Education
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    • 제40권2호
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    • pp.227-238
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    • 2021
  • Ecocentric worldview is considered as worldview that overcomes present environment problems and increases animal right. This study explores the formation of an ecocentric worldview for 4th-6th graders based on Peter Singer's research that divides the development of morality into family-centered, species-centered, and ecocentric worldview. The subjects of this study were 77 4th graders, 84 5th graders, and 91 6th graders in Daegu Metro- politan City. The results of surveying students' worldview based on the questionnaire developed by dividing into 6 questions are as follows. In most of the items in grades 4-6, the rate of formation of a species-centered worldview or a family-centered worldview was higher than that of an ecocentric worldview. However, in the case of 6th grade students was significantly higher than in other grades because they learned lesson on wolf restoration in the 5th grade science class. This may be seen as an effect of education, but since the ecocentric worldview did not appear high in other questions, it is reasonable to assume that 6th graders simply recited what they learned rather than forming a true ecocentric worldview. Therefore, there is a need for education that can help students to think, judge, and act on the basis of the ecocentric worldview consistently in any situation, rather than just memorizing the knowledge of the ecocentric worldview learned.

Performance of Railway Roadbed Reinforced by Acrylate in Laboratory Experiment (실내실험을 통한 아크릴레이트의 철도노반 보강 성능)

  • Yoon, Hwan-Hee;Son, Min;Kim, Jin-Hwan;Kim, Dong-Hyun;Kim, Byung-Hyun;Jung, Hyuk-Sang
    • Journal of the Korean Geosynthetics Society
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    • 제20권1호
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    • pp.9-19
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    • 2021
  • This paper deals with the reinforcement performance of acrylate for reinforcing the settled railway roadbed. Concrete tracks have the advantage of reducing track maintenance costs and high resistance to track destruction. However, roadbed settlement is occurring in some construction sections, and the safety of railways is a serious concern because of difficulties in maintenance. Currently, maintenance through the track restoration method is being carried out in Korea as a way of roadbed settlement in concrete tracks, but continuous re-settlement can occur because the roadbed itself cannot be reinforced, and there are very few cases of reinforcement of railway roadbeds and field application. So the development of reinforcement materials and construction methods to reinforce railway roadbeds is required. Therefore, in this paper, acrylate was selected as reinforcement material for railway roadbed, and the reinforcement performance of acrylate was analyzed through experiment. As a result, it was analyzed that the acrylate can penetrate into a permeability coefficient of 1×10-4 cm/sec, and secure uniaxial compression strength of 0.5 MPa/30min or more and stiffness of 80 MPa or more.

Analysis of Behavior Characteristics According to The Foundations Fixing Conditions of Storage Racks (적재설비 기초 고정조건에 따른 거동특성 분석)

  • Park, Chae-Rin;Heo, Gwang-Hee;Kim, Chung-Gil;Park, Jin-Yong;Ko, Byeong-Chan
    • Journal of the Korea institute for structural maintenance and inspection
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    • 제25권3호
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    • pp.68-76
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    • 2021
  • Storage racks have suffered huge losses due to earthquakes, but related research and regulations are relatively insufficient non-structural elements compared to the structural elements. In this study, we tried to experimentally analyze the behavioral characteristics of storage racks due to external force according to the fixing conditions of the column-foundations connection of storage racks. In general, the column-foundations connection of storage racks is installed according to the user's convenience without installation standards and regulations. For this reason, this study conducted a behavior analysis test on four full-scale storage racks with the condition of column-foundations connection of four typical storage racks. The behavior characteristics analysis test was performed by two-direction of the shake table with El-Centro seismic wave. To confirm the behavior characteristics according to the magnitude of the seismic load, 50% ~ 150% of the seismic waves were increased by 50% for each test. In addition, a resonance search test was conducted to confirm the natural frequency of each storage racks foundations fixing condition. Among the data obtained through the test, the displacement of the top layer and the permanent displacement after the test were compared for each condition to analyze the behavior characteristics of the column-foundations fixed conditions of the storage racks. As a result, the change of natural frequency was small in storage racks due to the change of the conditions of the foundations, and the behavior characteristics were changed due to the difference of the restoring force due to the change of the storage racks foundations condition rather than the influence of the natural frequency of the input load.