• Title/Summary/Keyword: LANDSCAPE EVALUATION

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A Study on the Test Construction Evaluation and Noise and Vibration Characteristics of Wireless Low-Floored Trams Trackway (무가선 저상트램 노면선로의 시험시공 평가와 소음·진동 특성연구)

  • Jeong, Young Do;An, Dong Geun;Jun, Jin Taek;Jeong, Woo Tae;Lee, Su Hyung
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.16 no.6
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    • pp.143-154
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    • 2012
  • The wireless low-floored tram is an innovative transportation system which is environment-friendly and highly energy-efficient. In addition, the system has various advantages such as low construction cost, improvement of urban landscape, revitalization of surrounding commercial area, elevated convenience for passengers, etc. Therefore, more than ten local governments have proposed tram construction projects in Korea. Accordingly, many research and development projects are ongoing funded by government including the developments of tram vehicle, tram trackway, signal system, etc. The embedded rail system are commonly used in order to provide leveled roadway surface in urban area. It is effective to reduce the noise and vibration, caused at the interface between the wheel and track, to minimize the construction period, and to lower the maintenance cost. This paper investigated the design and construction processes for tram trackway and figured out the constructability for the test track with embedded rail system for the first time in Korea. The performance to reduce the noise and vibration were quantitatively measured in the test track with embedded rail system. In addition, the results were compared to the ones for track with conventional rail system.

Evaluation of Agronomic Characteristics and Forage Production of Domestic and Foreign Italian Ryegrass Cultivar in Korea (국내육성 및 외국도입 이탈리안 라이그라스 품종의 생육특성 및 사초 생산성 평가)

  • Ko, Ki Hwan;Kim, Jong Kwan;Kim, Jong Duk
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.35 no.4
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    • pp.297-302
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    • 2015
  • This experiment was conducted to evaluate the agronomic characteristics and forage production of Italian ryegrass cultivars at three locations (Gurae, Sungju and Cheonan) from 2013 to 2014. The experiment employed a randomized complete block design with three replications. The seven cultivars used in this experiment were 'Korwinearly', 'Florida80', 'YounbongI', 'YounbongII', 'YounbongIII', 'KeimyungI' and 'KeimyungII' varieties. Italian ryegrass varieties were seeded on October 4 at Gurae, October 8 at Seongju and October 3 at Cheonan in 2013. The Italian ryegrass varieties were harvested on April 26 at Gurae and Seongju, and on April 24 at Cheonan in 2014. Although the seven cultivars had resistance to foliar diseases and insects and high winter survival, they has little lodging resistance. The heading dates for 'Younbong I', 'Younbong II' and 'Keimyung I' were earlier than for other varieties at the three locations. Dry matter (DM) content and plant height in the early maturing cultivars were higher than in other cultivars at the three locations. The fresh and DM yields of the early maturing cultivars were also higher than others at the three locations. The results of this experiment indicate that the heading date for early maturing cultivars is earlier, and the plant height is higher than for other cultivars. Early maturing cultivars had higher DM content as well as fresh and DM yields of Italian ryegrass. Therefore, early maturing cultivars should be recommended as high-yield forage in double-cropping systems because of their superior production of forage and early heading date.

Review and Discussion on Policy and Legal System for River Environments Management in Korea (국가 하천환경관리 체계의 검토와 고찰)

  • Chun, Seung-Hoon
    • Journal of Environmental Impact Assessment
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    • v.26 no.6
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    • pp.431-444
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    • 2017
  • This study was carried out to review the guidelines being used by law and national policy concerned on river environments management and suggest the applicability of newly developed river environment assessment system. In the current legal system, the national river environment management system is insufficient in securing an independent status in the legal institutional system which is separated to the Ministry of Land, Transport and Infrastructure and the Ministry of Environment. And the river environment assessment system of the national standard, which is a core matter, has not been established yet. In particular, there is a lack of integrated approach between the upper and lower plan or related plans on water resources, water quality, river environment and aquatic ecosystem management. In addition, the consistency and effectiveness as the process of planning and design according to the current status and comprehensive analysis and evaluation of the river environment were not secured either. To integrate national river environment management system and improve efficiency, I proposed the establishment of hierarchy and connection between national river plans, and the adoption and application of developed assessment system based on characteristics of river environment in Korea. Finally, I proposed the separated application with dividing the developed assessment system including the naturalness of river environment and suitability of water friendly activity into both assessment method for management plan of water resources of river basins & basic river plan respectively.

Evaluation of Properties of Artificial Soil Aggregate Based on Ground Granulated Blast-Furnace Slag According to Unit Binder Content (단위결합재량에 따른 고로슬래그 기반 육성용 인공토양골재의 특성평가)

  • Mun, Ju-Hyun;Sim, Jae-Il;Yun, In-Gu
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.20 no.5
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    • pp.85-92
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    • 2016
  • The eight mixes and artificial soil aggregates were prepared for evaluating the practical application of lightweight foamed concrete as soil aggregates. The main parameter was unit binder content ranged between from 100 to $800kg/m^3$. In lightweight foamed concrete, flow, slurry and dried density, and compressive strength at different ages were measured. In Artificial soil aggregates crushed from lightweight foamed concrete, particle size distribution, pH, coefficient of permeability, cation exchange capacity(CEC), and ratio of carbon to nitrogen(ratio of C/N), were measured. The test results showed that flow, slurry and dried density, and compressive strength at different ages of lightweight foamed concrete increased with the increasing of unit binder content. Compressive strength at age of 28, of lightweight foamed concrete with unit binder of more than $500kg/m^3$, was more than 4 MPa. The ammonium phosphate immersion time of more than age of 3, was effective to decrease pH of artificial soil aggregates. In addition, artificial soil aggregates was evaluated as high class in terms of cation exchange capacity(CEC), while satisfied with value of ratio of carbon to nitrogen(ratio of C/N) recommended by landscape specification.

The Visual Quality in Environmental Cognition and Its Effect on Human Behavior - From the Perspective of Empirical Aesthetics - (환경인지의 시각적 질과 그 효과에 관한 연구 - 경험미학적 관점 -)

  • 김주미
    • Archives of design research
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    • v.11 no.1
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    • pp.173-184
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    • 1998
  • This study deals with the visual quality in the future urban landscape and architectural environment, and as such, aims to identify a scientific and objective aesthetic and visual quality from the perspective of empirical aesthetics. The empirical aesthetics provides a framework that can be utilized in understanding human perception, consciousness, and behavior and a way to categorize the visual quality and to explain and predict its effect. The study examines various theories on environmental perception, cognition, and some new approaches to environmental aesthetics, and tries to present aesthetic properties that can be applied to environmental design. First, the aesthetic experience in visual perception can be defined as a combined effect of psychobiological properties and human activity, i.e. an interaction between the formal and symbolic signs in environment and the conceptual framework of man. The effect of visual quality differs and varies a great deal, depending on the sociocultural, personal and collective value system, so it is hard to define it in absolute terms. Second, the impact of visual quality and its aesthetic effect has to do with pleasure, preference, the aptitude for survival, and self regulation. Third, aesthetics is one of the areas that can benefit a great deal from an interdisciplinary approach. and an empirical study such as this can be used as a basis for design, planning, and evaluation.

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Development of Species Distribution Models and Evaluation of Species Richness in Jirisan region (지리산 지역의 생물종 분포모형 구축 및 종풍부도 평가)

  • Kwon, Hyuk Soo;Seo, Chang Wan;Park, Chong Hwa
    • Journal of Korean Society for Geospatial Information Science
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    • v.20 no.3
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    • pp.11-18
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    • 2012
  • Increasing concern about biodiversity has lead to a rise in demand on the spatial assessment of biological resources such as biodiversity assessment, protected area selection, habitat management and restoration in Korea. The purpose of this study is to create species richness map through data collection and modeling techniques for wildlife habitat assessment. The GAM (Generalized Additive Model) is easy to interpret and shows better relationship between environmental variables and a response variable than an existing overlap analysis and GLM (Generalized Linear Model). The study area delineated by a large watershed contains Jirisan national park, Mt. Baekun and Sumjin river with three kinds of protected areas (a national park, a landscape ecology protected area and an otter protected area). We collected the presence-absence data for wildlife (mammals and birds) using a stratified random sampling based on a land cover in the study area and implemented natural and socio-environmental data affecting wildlife habitats. After doing a habitat use analysis and specifying significant factors for each species, we built habitat suitability models using a presence-absence model and created habitat suitability maps for each species. Biodiversity maps were generated by taxa and all species using habitat suitability maps. Significant factors affecting each species habitat were different according to their habitat selection. Although some species like a water deer or a great tit were distributed at the low elevation, most potential habitats for mammals and birds were found at the edge of a national park boundary or near a forest around the medium elevation of a mountain range. This study will be used for a basis on biodiversity assessment and proected area selection carried out by Ministry of Environment.

Economic Value Evaluation of Ecosystem Services in Organic Rice-Fish Mixed Farming System in Paddy Wetland (벼-담수어 유기농 복합생태 논습지의 생태계서비스 경제적 가치평가)

  • Nam, Hongshik;Byeon, Youngwoong;Park, Keechoon;Park, Kwanglai;Lee, Youngmi;Han, Eunjung;Kim, Changhyun;Kong, Minjae;Son, Jinkwan
    • Journal of Wetlands Research
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    • v.22 no.4
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    • pp.286-294
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    • 2020
  • This study aims to economically evaluate rice production and various ecological services provided by organic rice paddy carrying out rice-fish mixed farming. It was also conducted to find a stable structure for increasing the income of rice-producing farmers and promoting ecological services by evaluating the economic feasibility of organic rice paddy for rice-fish mixed farming. As a result of the analysis of expected effects by ecological service functions according to the types of agriculture in the rice-fish mixed farming, general conventional paddy fields were evaluated to have an effect of continuously decreasing biodiversity such as amphibian reptiles, aquatic insects, bird habitats, experience and ecological education, and vegetation diversity, while the biodiversity of organic and rice-fish mixed paddy fields was assessed to increase. As a result of evaluating the economic value, as the area for fish production increases compared to the common practice and organic paddy fields, rice production decreases, but fish production increases and total income was analyzed to increase. In addition, if the value of ecosystem service functions is assessed in the future, it will increase further. It is hoped that these findings will be used as basic data for solving oversupply problems in the rice industry, preserving safe farm income, and improving sustainable farming and ecosystem service functions.

Planning of Alternative Forest Road Network Using GIS (GIS를 이용한 대안별 임도노망의 계획에 관한 연구)

  • Jeon, Kwon-Seok
    • Journal of Korean Society for Geospatial Information Science
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    • v.11 no.1 s.24
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    • pp.21-28
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    • 2003
  • This study was aimed at suggest a proper planning method to select a optimal forest road network in mountains forest using GIS(Geographic Information System). To examine the field applicability, the method was applied to the National Forest at Mt. Kumsan in Namhae-gun, Gyungsangnam-do. The main results from altogether six alternative road route plans were derived from these criteria obtained the alternative route plan No.2 has two layout criteria, longitudinal gradient and earth work volume, and it showed similar pattern of existing forest road network which was designed mainly ground slope and longitudinal gradient. The alternative route plan No.6 has four criteria, longitudinal gradient, earth work volume, investment effect and landscape impact. It was different for the lowest forest road density among the alternatives and the pattern of the forest road layout was radial form, which was also quite different to other alternatives. For optimal forest road network planning, GIS provide the efficient and resonable solutions for decision making to provide the support for evaluation about various alternative road networks. If detailed inventory and relevant data are provided and also clear and objective indicators for evaluations are set up, it could be applied to preliminary analysis and detail planning stage to prevent undesirable effect such the land slide and soil erosion due to inadequate planning for forest road network.

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A Study on the Success of Regional Festival through Economic Impact Analysis of Sweden's Almedalen (스웨덴 알메달렌의 경제적 효과 분석을 통한 지역축제 성공방안 모색)

  • Shin, Hye-Ri;Hong, Hee-Jeong
    • The Journal of the Korea Contents Association
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    • v.18 no.1
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    • pp.258-267
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    • 2018
  • This study attempted to do a research on whether local festivals contributed to local economic vitalization in an empirical aspect focusing on Almedalen's case of Sweden has not been discussed in Korea. For this, by analyzing Gotland's sociocultural and economic aspects into 3 steps and evaluating them, the study tried to derive policy implications for benchmarking Almedalen in Korea in the future. As a result of analyzing the economic effect of Almedalen in Sweden into 3 steps, it was shown that in the analysis of resources in Step 1, Almedalen positively affected tourist allurement based on Gotland's beautiful natural landscape. In the evaluation of operation in Step 2, according to the result of examining an increase in population and stabilization with a valuation index related to the activation of local economy, Gotland was steadily seeing a new inflow of population, due to which it can be confirmed that local income increases as various jobs are being created. Finally, as a result of examining the improvement in local image in Step 3, it was shown that as diverse members from all walks of life participated in Gotland's festival, external communication became flexible and the opportunity of social participation increased, which positively affected local image. Based on the study results, the policy implications for benchmarking Almedalen, Sweden's local festival, are as follows: First, selecting an appropriate place for attracting the participation of various people is needed. Second, local festivals should be places for communication to exchange opinions, not specific institute-oriented unilateral provision of information. Third, while advancing local festivals for nonprofit, the efforts to make positive changes in local image are needed.

A Study on the Image and Visual Preference for the Beautiful Forest Scenery types in Korea (아름다운 산림풍경 유형의 선호도 및 이미지 특성에 관한 연구)

  • Lee, Yeon-Hee;Park, Chan-Woo;Ha, Si-Yeon
    • Journal of Korean Society of Forest Science
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    • v.104 no.4
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    • pp.685-696
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    • 2015
  • This study intends to evaluate visual preference and image for 10 types of forest sceneries which have own distinct characteristics without overlapping each other among 22 types of beautiful forest sceneries based on Korea National Parks. Z scale and paired comparison methods were used to analyze visual preference for forest scenery, and SD scale method was also adopted to assess visual image for forest scenery. Experiments were conducted with 3 different university students groups. The results of this study can be summarized as follows. First, the evaluation results of Z scale (N=70) and paired comparison (N=64) methods show similar visual preference for different types of forest scenery. 'Scenery inside forests' and 'valley and rock' sceneries have the highest level of preference, and 'panorama of ridges', 'ridge of curious rock peaks', and 'waterfall and cliff' also have relatively higher preference level than others. However, 'community of dead trees' has the lowest preference in forest sceneries. Second, the factor analysis outputs of the image scores for beautiful forest scenery types by SD scale (N=66) show 3 factors of 'mysterious charm', 'colorful sense', and 'vividness/variety'. Examined the variables of forest scenery types for each factor, the image of 'mysterious charm' is based on the sceneries of mountain ridges, the image of 'colorful sense' is focused on the sceneries of color-expressed sense of the season, and the image of 'vividness/variety' is based on the sceneries of waterscape and curious rock peaks.