• The Korean Journal of Archival Studies
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• no.17
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• pp.39-84
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• 2008

In this article, how the records were compiled, stored and managed during the latter half period of the Joseon dynasty is examined. In details, the compilation of and and Euigwe, the establishment of 'history chambers(史庫)' and the Wae-Gyujanggak facility, and the creation of records such as 'Shillok Hyeongji-an', are all investigated. Examination of all these details revealed that in the latter half period of the Joseon dynasty, it was the royal family which actively led the task of meticulously compiling records and also storing & managing those established materials with great integrity and passion. The intention behind creating all these records containing everything the kings said and done over centuries must have been determination to enhance the openness and integrity of politics in general, while also emphasizing the importance of such values inside the government. In order to establish a tradition preserving records not only for a limited time period but also for eternity, 'history chambers' were founded in rocky mountain areas, and additional chambers(Wae-Sago) were created as well, in areas deemed strategically safe in military terms such as the Ganghwa-do island. Officials put in charge by the king himself of historical documenting reported to the history chambers on a regular basis and checked the status of the materials in custody, and the whole checking process was documented into a form called 'Shillok Hyeongji-an'. And for long-term preservation of materials, officials sent by the king regularly took all the materials outside, and conducted a series of 'desiccating procedures', under strong sunlight('Poswae'). Thanks to the efforts of our ancestors who did their best to preserve all the records, and tried everything to manage them with great caution, we can examine and experience all these centuries-old materials, mostly intact. It is imperative that we inherit not only the magnificent culture of creating and preserving records, but also the spirit which compelled our ancestors to do so.

• Korean Journal of Environment and Ecology
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• v.33 no.3
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• pp.366-374
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• 2019

This study aims to analyze the characteristics of ventilation corridor and propose its utilization strategies in Jeonju city in order to discuss how to utilize urban ventilation corridors as a planning factor for reducing heat wave impact and fine particle pollution. For these purposes, cold air characteristics such as cold air flow and height of cold air in Jeonju area located in the Honam Jeongmaek were analyzed and major ventilation corridors were specified. Based on them, we proposed mountain management strategies for securing and utilizing ventilation corridors. We used KALM (Kaltluftabflussmodell), a cold air simulation model developed in Germany and identified both the cold air flow and the height of cold air layer generated during 6 hours at night. As a result, the cold air flow generated in the forests located in the northeast and east sides of the Jeonju city became clear and the height of cold air layer increased in the valley terrain and farmland areas with time. In particular, Jeonju City has an ideal structure of urban ventilation corridor. Based on the results, the area where the cold air generation is active was designated as the 'cold air conservation area', and the area requiring the management for the good cold air flow was as the 'cold air management area'. This study is expected to be used as basic data of policy making and research for reducing heat wave impact and fine particle pollution such as climate change adaptation policy and urban forest plans for ventilation corridor composition.

• Journal of Digital Convergence
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• v.19 no.8
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• pp.235-240
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• 2021

Currently, the number of visitors to Oreum is increasing and the trend of tourism is changing rapidly. The motivation for visiting Oreum is also changing from relaxation and pleasure to experiences. In line with this change, people visit the mountain by selecting motivation such as marriage and family photos, not just exercise. However, it is difficult to search for an Oreum that matches the tourists' motivation. In order to solve these problems, we proposed a system that provides the association between Oreum and concept based on the number of search results from web search engines in real time. User can select the desired date to check the associations for past or selected periods and concepts. Through this research, visitors to Oreum, Jeju's natural heritage, can contribute to the development of tourism in Jeju. In the future, the concept of visiting beaches or seas, not just Jeju Oreum, can be provided. In this work, search results from websites are collected, stored in a database, and search results of Oreum and concept are provided on the homepage to classify Oreum trends.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.3
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• pp.85-92
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• 2018

The purposes of this study are to analyze the spatial composition of the outer garden of Soswaewon that appears in Gyeong-Ji Yang's "30 Poems of Soswaewon" and examine its significance and symbols. These poems by Gyeong-Ji Yang are important historical records that portray the appearance of Soswaewon and the space outside it at the end of the 17th century. Unlike "48 Poems of Soswaewon" or "Soswaewondo," these poems arenot limited to Soswaewon and its surroundings; theyalso include areas from the village entrance upwardto the peak of the mountain behind the village. These poems can be divided into three main parts. Jiseok-ri and Changam-dong in poems 1 and 2 provide first impressions of the village in which the main Soswaewon garden is located, whereas poems 3 to 8 and poems 10 to 12 describe the space inside Soswaewon. Poems 13 to 30 depict the beautiful scenery around the outer garden of Soswaewon. In general, about 30% of the compilation in "30 Poems of Soswaewon" celebrates the inner Soswaewon, and the remaining 70% depicts the scenery around Soswaewon (i.e., views of the outer garden). It is presumed that Gyeong-Ji Yang employed this structure to achieve some type of order. Between the "48 Poems of Soswaewon" - also describing Soswaewon - and "Soswaewondo," which is a woodprint drawing of Soswaewon, "30 Poems of Soswaewon" offers the widest coverage of Soswaewon. Compared to "48 Poems of Soswaewon," which addresses the scene inside Soswaewon, new buildings such as the Jaeweoldang, Buhweondang, and Hancheonsa appear in "30 Poems of Soswaewon." Thus, the latter covers a much wider range. Chimgye Munbang - Gwangpunggak, Yangdandongo - Aeyangdang, Byeongseogjuggeun - Jajukchong, etc. are mentioned in both compilations. The use of a wide range of natural objects in these 30 poems, including mountains, birds, and the sky (instead of trees and flowers), shows that the author perceived Soswaewon as an area with a much higher and wider view than that of a typical living space. Moreover, natural regression ideologies, or seclusion ideologies, are evident.

• Journal of Wetlands Research
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• v.23 no.2
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• pp.183-188
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• 2021

In the case of small-scale sewage treatment plants, it is reported that the amount of inflow fluctuates and it is difficult to operate the sewage treatment due to the inflow of unknown water due to the aging of sewage pipes. In particular, there are many overall operational problems due to the decrease in water temperature in winter. In this study, the operation status of small-scale sewage treatment facilities located in mountainous areas and water quality changes according to temperature were analyzed. It was found that the concentration of BOD, COD, and SS in effluent water was greatly changed depending on the temperature, and it was found that COD was particularly affected. Accordingly, the water level of the bioreactor was raised by 0.4m in order to temporarily apply measures to lower the water temperature in winter. As a result of comparing and analyzing the results when the bioreactor was covered and operated, a significant improvement effect occurred. In addition, a plan to improve the treatment efficiency of the bioreactor in winter is to extend the residence time of the bioreactor, a plan to expand the bioreactor specification, a new flow control tank and transport it to the outside, and an oxygen-free air diffuser to be used as an aerobic tank in case of an emergency in winter. The improvement plan was suggested. The results of this study are expected to be used as basic data for the operation plan of small-scale sewage treatment facilities in winter.

• Journal of The Korean Society of Grassland and Forage Science
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• v.41 no.1
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• pp.35-40
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• 2021

This study was conducted to evaluate the forage productivity and feed value of Sasa borealis (S. borealis) using growing black goats(S. borealis) in order to improve the utilization of S. borealis and to help mitigate the problem of reduced plant species diversity caused by S. borealis in Hanlla Mountain. One control and three treatments were made by the level of addition of S. borealis silage to the TMR feed. T1(10%), T2(20%), and T3(30%) treatments showed more daily weight gains than control group. Feed conversion ratio of T2 is 4.4g, which is significantly lower than control(P<0.05). The nitrogen retention in the control, which had relatively high dry matter intake, was 12.5g, which was significantly higher than that of T3. Sasa. borealis silage is considered to be able to use as a forage source for black goats, and if it is fed in an appropriate amount, it is considered that it will help improve livestock productivity, such as weight gain and feed conversion ratio.

• Korean Journal of Remote Sensing
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• v.36 no.6_1
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• pp.1291-1302
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• 2020

To verify the field-effectiveness of Terrestrial Laser Scanner (TLS), a terrestrial LiDAR was deployed to examine the damage properties of woods in forest fire area, then the data was compared with the results surveyed by a forestry expert. Four sample plots (30 m × 50 m, 0.15 ha) were set from the foot to the top of the mountain, and DBH, height, clear length, burned height, and crown length were investigated. Next, TLS collected information on damage characteristics found in the sample plots. This information was then compared with that amassed by the expert. The expert and the TLS survey results showed 30.8 cm and 29.9 cm for DBH, 15.8 m and 17.5 m for tree height, 8.4 m and 8.4 m for clear length, 4.0 m, 3.5 m for burned height, and 7.4 cm and 9.1 cm for crown length. With the exceptions of height and clear length, no notable discrepancy was observed between two methods. H/D ratio, CL/H ratio, and BH/CL ratio, all of which contribute to stability and decay rate of the stand, from the two methods were also compared. The human survey rated each ratio (H/D, CL/H, BH/CL in order) 51.3%, 47.1%, and 53.6%, while the TLS presented the results of 58.8%, 52.0%, and 38.7%.

• Korean Journal of Remote Sensing
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• v.38 no.5_1
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• pp.571-585
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• 2022

As the threat of natural disasters such as droughts, floods, forest fires, and landslides increases due to climate change, social demand for high-resolution soil moisture retrieval, such as Synthetic Aperture Radar (SAR), is also increasing. However, the domestic environment has a high proportion of mountainous topography, making it challenging to retrieve soil moisture from SAR data. This study evaluated the usability of Sentinel-1 SAR, which is applied with the Artificial Neural Network (ANN) technique, to retrieve soil moisture. It was confirmed that the backscattering coefficient obtained from Sentinel-1 significantly correlated with soil moisture behavior, and the possibility of stand-alone use to correct vegetation effects without using auxiliary data observed from other satellites or observatories. However, there was a large difference in the characteristics of each site and topographic group. In particular, when the model learned on the mountain and at flat land cross-applied, the soil moisture could not be properly simulated. In addition, when the number of learning points was increased to solve this problem, the soil moisture retrieval model was smoothed. As a result, the overall correlation coefficient of all sites improved, but errors at individual sites gradually increased. Therefore, systematic research must be conducted in order to widely apply high-resolution SAR soil moisture data. It is expected that it can be effectively used in various fields if the scope of learning sites and application targets are specifically limited.

• Journal of Conservation Science
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• v.37 no.6
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• pp.670-678
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• 2021

Anseong Cheonryongsa, a temple located in Anseong Seoun Mountain, is a part of the second Jogye Order of Korean Buddhism, under the Yongju Temple, and enshrines a gilt-bronze seated Avalokitesvara Bodhisattva. In this study, X-ray fluorescence (XRF) analysis revealed that this statue is composed of Cu-27.2 wt%, Sn-12.6 wt% and Pb-48 wt%. A gamma (γ) ray (Ir-192) image confirmed damage on the backside of the statue, which was later repaired with wood. The XRF analysis and visual observation determined the boundary between the metal and wood in the statue. In addition, results of standard X-ray peak intensity of gold foil and correlation with thickness helped to derive an equation for calculating the thickness of the Avalokitesvara Bodhisattva's gold foil. It was determined that the gilded chest (21 ㎛) and face (20.7 ㎛) of the statue were the thickest sections, the wooden substratum (11.9 ㎛) was the next-most thick, and the bronze (7.4 ㎛) was the thinnest layer.

• Journal of Korea Water Resources Association
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• v.55 no.2
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• pp.111-120
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• 2022

The concept of soil moisture memory was used as a method for quantifying the function of soil to control water flow, which evaluates the average residence time of precipitation. In order to characterize the soil moisture memory, a new measurement index called stored precipitation fraction (F_p(f)) was used by tracking the increments in soil moisture by the precipitation event. In this study, the temporal and spatial distribution of soil moisture memory was evaluated along with the slope and soil characteristics of the surface (0~5 cm) soil by using satellite- and model-based precipitation and soil moisture in the Korean peninsula, from 2019 to 2020. The spatial deviation of the soil moisture memory was large as the stored precipitation fraction in the soil decreased preferentially along the mountain range at the beginning (after 3 hours), and the deviation decreased overall after 24 hours. The stored precipitation fraction in the soil clearly decreased as the slope increased, and the effect of drainage of water in the soil according to the composition ratio of the soil particle size was also shown. In addition, average soil moisture contributed to the increase and decrease of hydraulic conductivity, and the rate of rainfall transfer to the depths affected the stored precipitation fraction. It is expected that the results of this study will greatly contribute in clarifying the relationship between soil moisture memory and surface characteristics (slope, soil characteristics) and understanding spatio-temporal variation of soil moisture.