• Korean Journal of Heritage: History & Science
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• v.57 no.3
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• pp.202-222
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• 2024

War is one of the most tragic and destructive incidents in human history, and it destroys precious cultural heritage. However, even amidst such devastation, certain cultural heritages convey messages of peace and human rights. This study aims to provide an in-depth interpretation of the significance of cultural heritage related to war. The research method involved an extensive review of theoretical discussions on war-related heritage. Based on this foundation, 18 cases of war heritage registered as UNESCO World Heritage Sites were selected. These cases were classified and analyzed into three categories: "physical traces of war and military fortresses," "memories of war and atrocities, and messages of peace," and "restoration and reconstruction of cities destroyed by war." The results of this study confirm that war heritage encompasses not only physical evidence of war but also multilayered and complex meanings such as the memories and traumas of war, scars and healing, and conflict and reconciliation. Based on these findings, the study proposes that war heritage should be reinterpreted and expanded to represent a "heritage of peace" and transcend its role of only including physical traces of war to embody the values of peace. This demands a shift in perception that confronts the painful memories of war while transforming them into assets for building peace. Furthermore, it urges the active exploration of ways to utilize war heritage for peaceful purposes. This study distinguishes itself from existing research by deepening the academic discourse on war-related heritage and providing a theoretical foundation for the registration of war-related heritage as World Heritage Sites.

• Journal of the Korean Geotechnical Society
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• v.18 no.3
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• pp.87-94
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• 2002

Recently, there have been numerous attempts to expand the traditional temporary soil nailing system into a permanent wall. Two reasons for this include the soil nailed system's advantage of efficient and economic use of subgrade space and its ability to decrease the total construction cost. However, the systematic and logical design approach has not been proposed yet. The permanent soil nailing wall system, which utilizes precast concrete from soil nailing system, is already used in many countries, but the study of cast-in-place concrete lacing or rigid walls in bottom-up construction of traditional soil nailing walls is imperfect and insufficient. In this paper, various laboratory model tests have been carried out to investigate the influence of parameters, including stiffness of the rigid wall to the soil nailing structure with respect to failure mode, displacement patterns and tensile forces at the nail head in several levels of load. Then, the variation of earth pressure distribution on the soil nailing wall, built with a rigid front plate, is sought through different levels of surcharge load and tensile forces at the nail head.

• Journal of The Korean Association For Science Education
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• v.26 no.2
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• pp.200-211
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• 2006

The purpose of this study was to analyze Korean middle school student achievement in environmental science based on the TIMSS 2003 (Trends in International Mathematics and Science Study), a student comparison of 46 participating nations. Korea ranked the fourth with a mean score of 554 in environmental science. However, all 3 environment science topics assessed in TIMSS are not included in the Korean science curriculum through 8th grade, even though they are included in most other participating nations' curricula. The average percent correct of items was analyzed according to the main topic, the item type and the cognitive domain. Items that showed differences between the average percent correct of Korea and the international average as well as differences between the average percent correct of boys and girls were further analyzed. Results revealed that Korean students performed better than the international average, especially in 'use and conservation of natural resources', multiple-choice items, and items requiring 'factual knowledge'. Also, male students demonstrated significantly higher achievement than female students. On the other hand, Korean students showed relatively lower achievement in constructed-response items, items that contained content they had not learned in science lessons and items requiring descriptions of the uses and effect of science and technology. Moreover, Korean student lacked understanding about acid rain, global warming, and ozone layer destruction. Korean female students showed relatively lower environmental conceptions and lower performance on items requiring data analysis than Korean male students. On the basis of these results, this study suggested that topics of environmental science be included in the science curriculum and taught in the science classroom to help middle school students more fully comprehend environmental issues.

• Journal of Acupuncture Research
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• v.21 no.1
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• pp.211-225
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• 2004

목적 : 류마티스 관절염 환자의 골 파괴에 중요한 역할을 하는 것으로 알려진 Matrix Metalloproteinase-1(MMP-1) 유전자의 단일 염기 다형성을 분석하고, 나아가 봉독약침 치료에 대한 반응과의 연관성을 조사하기 위하여 본 연구를 시행하였다. 방법 : 미국류마티스학회의 류마티스 관절염 기준에 해당하는 122명의 한국인 류마티스 관절염 환자와 건강한 92명의 대조군을 대상으로 pyrosequencing 방법을 이용하여 MMP-1 유전자의 -519 위치의 다형성을 비교 분석하였으며, 류마티스 관절염 환자군을 다시 유전자 유형에 따라 동통 관절수, 종창 관절수, 조기 강직, 통증 강도, 삶의 질 평가도구인 HAQ, 환자 및 의사의 전반적 질병상태 평가, ESR, CRP 등의 항목을 치료 전후 평가하여 비교 분석하였다. 결과 : 1. 류마티스 환자군과 건강한 대조군간에 MMP-1 유전자의 단일 염기 다형성의 유전자형의 분포와 대립유전자 발현 빈도에 통계적으로 유의한 차이가 나타났으며, 이는 MMP-1 유전자 다형성이 한국인 류마티스 관절염 환자의 질병 감수성과 관련이 있음을 추정할 수 있다. 2. 각 유전자형 그룹간 치료전 질병의 중증도 평가에서 임상 평가와 혈액의 급성 염증 반응물질 평가에서 통계적으로 유의한 차이는 없었다. 3. 급성 염증 반응의 지표인 ESR과 CRP level의 봉독약침 치료 전후 변화는 MMP-1의 유전자 다형성과 유의한 연관이 없었다. 4. 각 유전자형 그룹간의 치료 전후 질병 호전도 비교에서, AA 유전자형이 종창 관절수 평가에서 더나은 호전을 보였으며, 다른 모든 평가에서는 통계적으로 유의한 차이가 없었으며, 향후 관련 유전자와의 연관성 연구가 필요하다고 사료된다.

• Journal of the Korean Society for Railway
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• v.11 no.3
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• pp.326-333
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• 2008

This study is objected by presenting preliminary data to revise the periodic replacement criteria of continuous welded rail (CWR) in using. In this study, it is investigated information resources for foreign standards, the cause and types of damage in welded rails and the track maintenance history of Seoul metro to analysis the correlation between rail failure and accumulated passing tonnage. Also, it is performed bending test for the laid welded rail reaching the periodic replacement criteria. In result, the correlation between rail failure and accumulated passing tonnage is not obvious and it is a lot of cases for the construction error of welded rail. Also, as a result of bending test of laid welded rail, according to reducing about $17{\sim}18%$ the bending fracture strength of rail, the laid welded rail reaching the periodic replacement criteria is well enough ensured for the load carrying capacity of rail.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.20 no.6
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• pp.611-620
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• 2008

The process of sediment transport has a very complex mechanism due to waves, currents and bottom topography changes. Usually, beach erosion occurs from various causes such as non-equilibrium sediment transport condition, construction of seawall and rip currents. Therefore, when we try to reduce and develop countermeasures for beach erosion, we have to know the main mode and direction of sediment transport that causes beach erosion. In this study, the process of sediment transport on Jeonchon-Najung beach and main causes of beach erosion have been studied. Field investigation data, aerial photos and the results of numerical model test were used in the analysis. As a result, it was realized that the main causes of beach erosion at Jeonchon-Najung beach was due to the construction of fishery harbors and a seawall.

• Journal of the Korean Geotechnical Society
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• v.38 no.7
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• pp.39-47
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• 2022

This study aims at evaluating the stability of disaster risks, such as schools, apartments, and geotechnical structures located around slopes in urban areas. The research conducted an aerial photography analysis on where the slope of the retaining wall behind 𐩒𐩒 High School in Gwangju collapsed in August 2018 due to heavy rain. In general, the overflow of rainwater has been managed through drainage channels around slopes during the rainy season, and the surface flow of rainfall was limited due to the presence of dense forests in the area. However, when the slope collapsed, a lot of water flowed out of the ground, and the saturated surface layer ground was destroyed. To analyze the cause, the changed terrain of the upper slope area, which could not be directly identified, was photographed using unmanned aerial vehicles. Digital Elevation Model by unmanned aerial vehicle shooting was performed by analyzing the slope map, calculating the direction of rainfall and the length and width of water-logged areas. The change in the instability of the slope over time due to a 10-day rainfall was also analyzed through numerical analysis.

• Geotechnical Engineering
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• v.2 no.1
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• pp.27-44
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• 1986

The measured soil data are analyzed to the descriptive statistics and classified into the four models of uncorrelated-normal (UNNO), uncorrelated-nonnormal (VNNN), correlatedonnormal(CONN), and correlated-nonnormal(CONN) . This paper presents the comparisons of reliability index and check points using the advanced first-order second-moment method with respect to the four models as well as BASIC Program. A sin91e-mode Performance function is consisted of the basic design variables of bearing capacity and settlements on shallow foundations and input the above analyzed soil informations. The main conclusions obtained in this study are summarized as follows: 1. In the bearing capacity mode, cohesion and bearing-capacity factors by C-U test are accepted for normal and lognormal distribution, respectively, and negatively low correlated to each other. Since the reliability index of the CONN model is the lowest one of the four model, which could be recommended a reliability.based design, whereas the other model might overestimate the geotechnical conditions. 2. In the case of settlements mode, the virgin compression ratio and preccnsolidation pressure are fitted for normal and lognormal distribution, respectively. Constraining settlements to the lower ones computed by deterministic method, The CONN model is the lowest reliability of the four models.

• KIPS Transactions on Software and Data Engineering
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• v.3 no.10
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• pp.421-428
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• 2014

Like Alzheimer's disease, Parkinson's Disease(PD) is one of the most common neurodegenerative brain disorders. PD results from the deterioration of dopaminergic neurons in the brain region called the substantia nigra. Currently there is no cure for PD, but diagnosing in its early stage is important to provide treatments for relieving the symptoms and maintaining quality of life. Unlike many diagnosis methods of PD which use a single biomarker, we developed a diagnosis method that uses both biochemical biomarkers and imaging biomarkers. Our method uses ${\alpha}$-synuclein protein levels in the cerebrospinal fluid and diffusion tensor images(DTI). It achieved an accuracy over 91.3% in the 10-fold cross validation, and the best accuracy of 72% in an independent testing, which suggests a possibility for early detection of PD. We also analyzed the characteristics of the brain fiber pathways of Parkinson's disease patients and normal elderly people.

• The KIPS Transactions:PartC
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• v.9C no.6
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• pp.831-840
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• 2002

Due to the advance of computer and communication technology, intrusions or crimes using a computer have been increased rapidly while tremendous information has been provided to users conveniently Specially, for the security of a database which stores important information such as the private information of a customer or the secret information of a company, several basic suity methods of a database management system itself or conventional misuse detection methods have been used. However, a problem caused by abusing the authority of an internal user such as the drain of secret information is more serious than the breakdown of a system by an external intruder. Therefore, in order to maintain the sorority of a database effectively, an anomaly defection technique is necessary. This paper proposes a method that generates the normal behavior profile of a user from the database log of the user based on an association mining method. For this purpose, the Information of a database log is structured by a semantically organized pattern tree. Consequently, an online transaction of a user is compared with the profile of the user, so that any anomaly can be effectively detected.