• Proceedings of the Korea Inteligent Information System Society Conference
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• 2001.06a
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• pp.315-329
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• 2001

외부침입탐지 시스템(IDS: Intrusion Detection System)은 컴퓨터의 외부 침입을 자동으로 탐지하는 시스템이다. IDS의 주요목표는 외부사용자들이나 내부 사용자들에서 권한이 없는 사용자, 컴퓨터 오용(misuse) 혹은 잘못된 사용(abuse)을 탐지하는 것이다. 파이어 월(Firewall)이나 암호화와 같은 침입 방지 시스템에 관한 연구와 병행하여 최근 IDS에 대한 다양한 연구가 이루어지고 있다. 침입탐지와 바이러스 탐지에 대한 새로운 접근 방법으로서 면역학적 방법이 동원되고 있다. 이 연구에서는 인간의 인체면역 시스템으로부터 얻어진 몇 가지 주요한 Feature들을 외부침입 탐지에 적용하여 기존의 침입탐지 방법에서 오는 한계점을 극복하여 경고 오류(alarm error rate)를 줄이고자 한다. 따라서 본 연구에서는 외부침입을 탐지하고 시스템을 치유하는 인간의 인체 면역에 대해 기초적인 연구를 진행하였으며 이러한 인체면역 기저들을 네트워크 환경에서 어떻게 실제적으로 적용할 것인 지를 연구하였으며 실제 네트워크 데이터를 적용하여 본 연구에서 제안한 모델에 대한 성능을 테스트하였다.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.40 no.4
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• pp.58-66
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• 2022

Biophilic design is an approach that attempts to connect people with nature to promote health, recovery and restoration processes. The purpose of this study was to systematically analyze restorative factors and characteristics of Soswaewon by applying a biophilic design analysis framework. To this end, a biophilic design classification system was established and content analysis and frequency analysis were conducted for 『Soswaewon 48 Young』. the ratio of plant words including bamboo, pine, and plum was the highest, and words related to dynamic water flow or interaction with water as well as various water types such as streams, waterfalls, and ponds were also high. appeared in rank. In addition, multisensory factors, seasonal changes, microclimatic factors, emotional elements that allow people to indirectly experience nature were expressed in various ways. The space layout and circulation provide opportunities to appreciate and experience the rich sensory resources of Soswaewon. In conclusion, this study confirmed the healing and restorative value of Soswaewon from the perspective of biophilic design, and it needs further research on the restorative factors of traditional spaces.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.11a
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• pp.241-242
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• 2022

Recently, related studies on the application of bacterial spores to self-healing concrete have been widely reported. Using the self-healing method of bacterial spores as a kind of pro-environment, the green method is very attractive, but because the living environment of bacterial spores is relatively harsh, it is necessary to have a way to separate the living environment of bacterial spores from the harsh external environment, And release bacterial spores when needed. Therefore, capsules are widely used in self-healing concrete. To enhance the self-healing effect, the capsules need to be evenly distributed in the concrete. Furthermore, we develop a CIP-based smart capsule with controllability. We determined the magnetic force of each capsule by mixing CIP in resin, then mass-fabricating the capsules for self-healing by a microfluidic method, and by measuring the kinetic distance of the capsules containing different amounts of cip under the action of a magnetic field strength. The results show that with the increase of the amount of cip, the active distance of the capsule also increases. When the cip is 8wt%, the active distance reaches 1.75cm. We believe this research can provide momentum for the development of self-healing capsule applications.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2002.11b
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• pp.30-30
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• 2002

꿩의비름 (Sedum erythrostichum)은 매우 우수한 지피식물이며 건조에 강한 대표적 식물로 바위정원 (rock garden)을 가꾸는데 있어서 중요한 수종으로 이용되며, 유럽등지에서는 지붕에 식재하기도 하며 최근에는 빌딩옥상녹화의 대표적 수종으로 식재되고 있다. 또한 한방에서는 경천이라 불리우기도 하는데 피부상처 치유 및 미백효과가 탁월하다고 알려져 있다. 본 연구에서는 Agrobacterium을 매개로한 꿩의비름의 형질전환 시스템을 개발하고 아울러 phosphinothricin-N-acetyltransferase (PAT) 유전자를 도입하여 제초제 저항 식물을 개발하고자 수행되었다. 꿩의비름 잎을 Agrobacterium에 담근후 0.5 mg/l NAA와 2 mg/1 BA가 첨가된 MS 배지에 3일간 공동배앙 하였다. 그 후 300 mg/1 cefotaxime이 첨가된 같은 배지에 옮겨 계대하면서 Agrobacterium을 제거하였다. 약 3주후에 잎 절편으로 부터 직접적으로 부정아가 형성되기 시작 하였는데 이 시기부터 잎 절편을 25 mg/1 kanamycin이 첨가된 선발배지에 옮겨 주었다. 이 결과 배양된 잎 절편 절편 중 3.75%에서 kanamycin에 저항하는 부정아를 얻을 수 있었다. 형질전환체는 X-gluc 반응, PCR, Southern, Nothern analysis를 통하여 확인하였다. 약 94%의 형질전환 식물체는 성공적으로 토양에 옮길 수 있었으며 약 3개월후에 꽃을 피웠다. 형질전환체는 제초제인 Basta ($^{(R)}$ phosphinothricine at 200 mg/1)를 살포하여 주었을 경우 생존함을 확인 하였다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.04a
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• pp.245-246
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• 2022

Recently, research on the self-healing of concrete using bacteria has been actively conducted. The self-healing method using bacteria has a low self-healing rate and the surrounding environment of the fracture site is very important. A previous study to solve this problem involves the manufacture of capsules using 3D printing. Fracture position control was an important topic in 3D printing-based capsules. In this study, to compensate for the shortcomings of existing studies, a capsule capable of selective destruction location control was produced using PDMS-based molds that are not restricted by the environment. Resin capsules were prepared for each part using several molds and a bonding surface was arranged. In order to verify this on the bonding surface, fracture strength and wave unit values were analyzed through a three-way compression experiment. It can be seen that as the curing time increases, the deviation between samples decreases. In addition, through experiments, it was confirmed that the junction surface and wave unit values coincide in all three directions. It can be used for self-healing research using various solutions.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.04a
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• pp.247-248
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• 2022

3D printer-based self-healing capsules have been proposed to heal cracks by enabling various structural designs, repeatable fabrication, and strength analysis of the capsules. The Fusion Deposition Modeling (FDM) method was used to design, analyze, and produce new self-healing capsules that are widely used at low cost. However, PLA extruded from FDM has low interlayer adhesion energy, and thus strength varies depending on the angle of load applied to the laminated layer and the concrete structure, thereby degrading the performance of the self-healing capsule. Therefore, in this paper, the structure of the capsule manufactured by the FDM PLA method has isotropic strength was designed. In addition, the fracture strength in the x, y, and z directions of the load applied through the compression test was analyzed. As a result, it was confirmed that the newly proposed capsule design has an isotropic fracture strength of 1400% in all directions compared to the existing spherical thin-film capsule.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.34 no.1
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• pp.97-106
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• 2016

This study is to suggest the necessity of landscaping alternatives for succession of Takjok(濯足) culture by considering the background and meaning of Takjok's cultural phenomenon shown in old literatures, paintings and ruins of landscape architecture as a front morphemes. Its result is as follows. 1. An old idiom, 'Takyung Takjok(濯纓濯足)' implying a disinterested living attitude from the mundane world and an attitude complying with the nature, has been sublimated to 'Takjokjiyu(濯足之遊)' which means living in comfortable retirement through life in seclusion(隱逸). 2. The meaning of Takjok did not expand into, not only Takyung Takjok, but also into Takcheong(濯淸), Tako(濯吾), and Taksa(濯斯) with continued expansion in its meaning. The spaces the meaning of Takyung Takjok is implied on have also newly expanded into the artificial spaces, including Jeong(亭-pavilion) Jae(齋-house) Heon(軒-eaves), and Ji(池-pond), as well as the natural spaces, including Am(巖-rock) Dae(臺-flat foundation) Dam(潭-deep pond) Ban(盤-dish rock) Seok(石-stone) So(沼-shallow pond) San(山-mountain) Bong(峰-peak), and Cheon(泉-water hole). 3. As seen here, the cultural phenomenon of Takyung Takjok, which have derived from the Dangho(堂號) of buildings, the names of natural objects in Palgyung and Gugok(eight sceneries and nine curves), facilities of Byeolseo garden and Seowon, and the Amgakseo in nature, is worth noting. 4. It should be considered that Takjok includes ordinary people's wisdom to resist the hot weather as well as classical scholar's ideal and the veneration of antiquity. From this perspective, water space, Takjok rocks, and use of water based on the environmental supportability should be newly focused as a recreational space and it reminds us that the spirit of Takjok is a classical mental healing method.

• Journal of the Korean Institute of Landscape Architecture
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• v.36 no.6
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• pp.34-42
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• 2009

This study was executed to introduce a greenhouse style "Evergreen Park" to apartment complexes to target hands-on resident participation and application rather than a mere viewing of the plants as a way to provide convenient and profitable service to residents in a year-round center of usable outside space. The four key points can be summarized as follows: first, subtropical plants are evergreen broad-leaved trees, which maintain their green during all four seasons the leaves are thick and glossy. Greenhouses geared toward these subtropical trees-mainly broad-leaved evergreen species-are in planning to introduce these unique, elegant plants to temperate regions. Residentswill not only gain an education regarding these species but will be provided with the best quality evergreens at very reasonable maintenance costs. Second, subtropical plants greenhouses introduced in apartment complexes are suggested for structures connected via underground passage as well as free-standing structures so as to make use of geothermal heating and apply to reducing sunlighting. Third, as a way to provide (1) health & relaxation(evergreens, herb garden, water space), (2) community & education (plant flea market/plant hospital, plant-related lecture(exhibition), hands-on experience program), (3) a vine garden for year-round use such festivities as a Butterfly Festival, Aroma festival, Smile Oak Nuts, Candlelight Festival and Christmas Photo Site. Lastly, it has been suggested that the operation and maintenance of these greenhouses will be both by resident council operation management and by outsourcing company operation management.

• Journal of The Korea Institute of Healthcare Architecture
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• v.19 no.1
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• pp.9-22
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• 2013

Purpose: The aging population is the quickly increasing in Korea. Since 2008, the National Long term Care Insurance, a number of long term care facilities have established during short time in Korea. Especially, the environmental assessment tool is important for managing healing environment in a long term care facility for the elderly. Alzheimer's Garden Audit Tool (AGAT) is used to assess whether a garden incorporates those elements and qualities as healing outdoor space. In this paper, we discuss the benefits, limitations, and future directions of the assessment tool for long-term care facilities. Methods : The AGAT audit was done through content analysis by 5 experts from diverse discipline as post occupancy evaluation of a long term care facility located in suburban area. The expert group was asked to describe their comments for modification and improvement in application of AGAT. Results : The results of this study show that it is necessary to refine the instrument's items to better meet the needs of the criteria and items for Korean culture-friendly tool. Especially, greenhouse elements (various plants, birds etc.), multisensory experiences, users-oriented space, programmed activities in garden, and hazards on pathway has somewhat limitation as measurement to assess outdoor of long-term care facilities in Korea. Implications : Consequently, AGAT could be applicable to evaluate the outdoor space of long term care facility in Korea with culturally sensitive revision.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.59-67
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• 2022

The main purpose of this study is to quantitatively grasp the effectiveness of the gardening program by conducting a gardening program to induce active activities of the elderly and to induce healing functions and social activities, and then observing the results before and after implementation. In order to achieve the purpose of the study, as a result of conducting 30 gardening programs for 20 elderly people at two elderly care facilities, the measure of depression was found to have an improvement effect as a practice-oriented program, and it was found to revitalize the elderly. In addition, it was found that the quality of life was improved by the gardening program, and it was found to be helpful in activating the brain.