• Geomechanics and Engineering
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• 제7권2호
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• pp.183-200
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• 2014

The expansivity of clayey soils is a complicated phenomenon which may affect the stability of geotechnical structures and geo-environmental projects. In all common factors for the monitoring of soil expansion, less attention is given to anion type of pore space solutions. Therefore, this paper is concerned with the impact of various concentrations of different inorganic salts including NaCl, $Na_2SO_4$, and $Na_2CO_3$ on the macro and microstructure behavior of the expandable smectite clay. Comparison of the responses of the smectite/NaCl and smectite/$Na_2SO_4$ mixtures indicates that the effect of anion valance on the soil engineering properties is not very pronounced, regardless of the electrolyte concentration. However, at presence of carbonate as potential determining ions (PDIs) the swelling power increases up to 1.5 times compared to sulfate or chloride ions. The samples with $Na_2CO_3$ are also more deformable and show lower osmotic compressibility than the other mixtures. This demonstrates that the barrier performance of smectite greatly decreases in case of anions with the non-specific adsorption (e.g., $Cl^-$ and $SO{_4}^{2-}$) as the salinity of solution increases. Based on the results of the X-ray diffraction and sedimentation tests, the high soil volumetric changes upon exposure to carbonate is attributed to an increase in the repulsive forces between smectite basic unit layers due to the PDI effect of $CO{_3}^{2-}$ and increasing the pH level which enhance the buffering capacity of smectite. The study concluded that the nature of anion through its influence on the re-arrangement of soil microstructure and osmotic phenomena governs the hydro-mechanical parameters of expansive clays. It seems not coinciding with the double layer theory of the Gouy-Chapman double layer model.

• 한국콘텐츠학회논문지
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• 제21권9호
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• pp.391-403
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• 2021

본 연구는 교육 공공성의 개념적 요소에 비추어 현재 유아교육의 현황을 짚어보고, 향후 유아교육 발전을 위한 정책적 과제들을 도출하기 위해 수행되었다. 정부 공식문서, 국책연구기관 보고서를 수집하여 정성적 문헌분석을 실시하였으며, 공공성 구성요소들을 준거로 하여 유아교육의 공공성 수준을 평가하였다. 연구결과 그 동안의 우리나라의 유아교육 정책은 누리과정 도입 등 유아교육의 공공성을 강화하는 방향으로 추진되어 왔다. 공공성의 양적 확대는 이루어졌으나, 이제는 공공성의 질적 강화에 초점을 둔 정책방향의 재설정 및 제도보완이 요구된다. 본 연구는 유아교육 전반에 대한 재검토 방향에 대한 시사점을 제공하였다.

• Archives of Plastic Surgery
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• 제46권4호
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• pp.365-370
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• 2019

The syndrome of the trephined is a neurologic phenomenon that manifests as sudden decline in cognition, behavior, and sensorimotor function due to loss of intracranial domain. This scenario typically occurs in the setting of large craniectomy defects, resulting from trauma, infection, and/or oncologic extirpation. Cranioplasty has been shown to reverse these symptoms by normalizing cerebral hemodynamics and metabolism. However, successful reconstruction may be difficult in patients with complex and/or hostile calvarial defects. We present the case of a 48-year-old male with a large cranial bone defect, who failed autologous cranioplasty secondary to infection, and developed rapid neurologic deterioration leading to a near-vegetative state. Following debridement and antibiotic therapy, delayed cranioplasty was accomplished using a polyetheretherketone (PEEK) implant with free chimeric latissimus dorsi/serratus anterior myocutaneous flap transfer for vascularized resurfacing. Significant improvements in cognition and motor skill were noted in the early postoperative period. At 6-month follow-up, the patient had regained the ability to speak, ambulate and self-feed-correlating with evidence of cerebral/ventricular re-expansion on computed tomography. Based on our findings, we advocate delayed alloplastic implantation with total vascularized soft tissue coverage as a viable alternative for reconstructing extensive, hostile calvarial defects in patients with the syndrome of the trephined.

• 한국농촌건축학회논문집
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• 제21권2호
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• pp.27-34
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• 2019

This study explores the emergence of a modern form of Cheongju-eup townscape in the late 1930s by re-examining the 1960s restoration model of Seongan-dong and Jungang-dong in Cheongju, one of the historic cities in South Korea. According to the acquired data from the restoration model, it is found that the construction of a new urban area during the late 1930 was resulted from the following events: the development of a railroad station located outside of the north gate of Cheongju-eup since 1921, the completion of Musimcheon embankment outside the south gate in 1932, and the construction of Chungcheongbuk provincial office outside the eastern gate in 1937. In this period of development, which the author named 'Cheongju-eup period', the streets in the old castle, consisting only of two-story financial buildings, had been expanded from the existing area at the Seongan-gil intersection to the outside the east gate of Cheongju-eup. In addition, public government buildings, which were mainly located in both Seongan-gil and Yulgok-ro in the east-west direction, were newly constructed during the late 1930s in Seokgyo-dong, a new area in which a large number of commercial buildings including department stores, clothing stores, shoes shops, and watch stores were also built along the streets. Moreover, the modern form of Cheongju-eup was to be formed by several construction projects in the area of Jungang-ro in the late 1930s. Until the 1920s, the townscape outside the northern gate of Cheongju-eup, were composed of primary, agricultural, and female schools built on a largest site of Gyoseo-ro and Daeseong-ro as well as a transportation warehouse and a railway office near the Cheongju station. Then, entering the 1930s, new school buildings and domestic industrial shops and factories were built around the area of Jungang-ro ranging from the railway outside the northern gate to Bangadari. As a result, the expansion of townscape with newly constructed buildings in the late 1930s marked the emergence of a modern form of Cheongju-eup.

• 한국의류학회지
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• 제45권2호
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• pp.356-375
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• 2021

The Generation Z (Gen-Z) consumer has a unique beauty-consuming behavior that is distinct from the previous generations. This study aims to identify the meaning of makeup rituals based on the theoretical framework of the ritual concept. In-depth interviews were conducted with fifteen females in their mid-teens to early 20s. The results showed that Gen-Z has different types of makeup ritual scripts for both ordinary days and special days, which are constantly being re-written and revised based on the experience accumulated. In addition, there are various types of ritual artifacts that play an important role in Gen-Z's makeup ritual, and that they provide psychological comfort and satisfaction. The importance of DIY (Do It Yourself), collecting, and independent brands is emphasized. The role of Gen-Z in the makeup ritual was expanding from a creator for her own ritual to a collaborator for peers' rituals, and sometimes the expansion goes beyond the direct relationships to virtual ones through SNS (Social Network Service). The Gen-Z cohort is found to be a member of beauty knowledge network through which they learn, share, and create the know-how and shopping skills.

• 한국도서관정보학회지
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• 제51권4호
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• pp.231-247
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• 2020

인공지능(AI)이 4차 산업혁명 중에서도 미래유망기술로 부각됨에 따라 도서관을 포함한 사회 전 분야에 걸쳐 인공지능기술을 적용하고 확대하고자 노력하고 있다. 이 연구는 인공지능이 대학도서관 서비스에 미치고 있는 영향과 이슈, 그리고 시사점에 대해 조사하였다. 연구방법은 북미지역 대학도서관 IT전문가들과의 심층인터뷰를 수행하였으며, 인터뷰결과와 국내외 관련 문헌들을 통해 결론과 논의점을 도출하였다. 본 연구는 연구결과로 북미지역 대학도서관들은 인공지능 시스템을 기반으로 정보 접근과 검색을 효율화하는 인프라구축에 노력하고, 대학내 인공지능 연구소들과도 협업하여 새로운 서비스 제공을 시도하고 있음을 밝혔다. 또한 향후 도서관과 사서의 역할 변화, 프라이버시, 그리고 데이터품질에 대한 이슈들을 제기하였다. 논의를 통해 대학의 사서들이 지식을 보급하는 역할을 수행하는 소프트웨어 엔지니어가 되기 위한 사서 재교육의 필요성과 대학 도서관의 정보시스템 구축을 위한 투자와 도서관에 인공지능 연구소를 세우는 방안을 제시하였다. 연구환경 변화에 따른 연구의 제한점과 향후 연구에 대한 제안도 논의되었다.

• 대한조현병학회지
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• 제23권1호
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• pp.38-44
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• 2020

Objectives: Dehospitalization of long-term inpatients with schizophrenia can be difficult because of complex factors such as chronic symptoms and low family and social support. The aim of this study was to identify factors related to dehospitalization and readmission of long-term inpatients with schizophrenia. Methods: This retrospective study reviewed the medical records of patients discharged from a psychiatric hospital in Yongin, South Korea, from February 1, 2016, to July 31, 2017. Patients who were hospitalized for over 3 months were divided into two groups: readmission (n=47) and dehospitalization (n=55). Differences in sociodemographic and clinical factors were analyzed between the two groups. Results: Regarding sociodemographic characteristics, female sex, familylessness, discharge to nursing homes, and discharge after symptom improvement were more prevalent in the dehospitalization group, whereas male sex, having a sibling as next of kin, and discharge because of other problems were more prevalent in the readmission group. Among clinical characteristics, hospital stay was longer in the readmission group. Conclusion: In this study, patients without a family showed a tendency to not be readmitted when they were discharged to nursing homes after symptom improvement. Expansion of social welfare support may encourage dehospitalization of long-term inpatients with schizophrenia.

• Ocean and Polar Research
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• 제45권1호
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• pp.23-31
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• 2023

The core of the foreign policy of the Yoon Suk-yeol government is the promotion of active economic and security diplomacy as indicated in Policy Tasks No. 98. To this end, economic consultative bodies such as Regional Comprehensive Economic Partnership Agreement(RCEP), Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP), and Indo-Pacific Economic Framework (IPEF) are taking the initiative to respond to the formation of supply chain, human rights, environment, and digital-related norms, and actively support Korean companies' overseas expansion. Due to the nature of the Ministry of Oceans and Fisheries (MOF) as an organization established centered on the space of the ocean, the MOF faces difficulties in bringing the functions of other ministries into the space of the ocean. Considering the vision, objectives, and detailed plans of the MOF, the contribution of the MOF in the field of active economic security, one of the main foreign policies of the Yoon Suk-yeol government, is perhaps too obvious. However, since the re-launch of the MOF, the ODA budget for the oceans and fisheries sector is too small compared to other ministries, so even if new policy demands are discovered, there are many difficulties in implementing these policies in practice. Recognizing these problems, this paper examines the background and contents of foreign policies that have been promoted for the efficient promotion of RCEP, CPTPP and IPEF and introduces the areas of cooperation in the oceans and fisheries sector in these foreign policies.

• 한국수소및신에너지학회논문집
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• 제33권6호
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• pp.761-768
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• 2022

In the hope of realizing carbon neutrality, Korea has established the goal of expanding the supply of hydrogen electric vehicles through a roadmap to revitalize the hydrogen economy. A prerequisite for successful supply expansion is securing the safety of hydrogen electric vehicles. Certain parts, such as the hydrogen transport pipe and tank, in hydrogen electric vehicles are exposed to high-pressure hydrogen gas over long periods of time, so the hydrogen enters the grain boundary of material, resulting in a degradation of the parts referred to as hydrogen embrittlement. In addition, since the safety of parts utilizing hydrogen varies depending on the type of material used and its environmental characteristics, the necessity for the enactment of a hydrogen embrittlement regulation has emerged and is still being discussed as a Global Technical Regulation (GTR). In this paper, we analyze a hydrogen compatibility material evaluation method discussed in GTR and present a direction for the development of Korean-type hydrogen compatibility material evaluation methods.

• 한국경제지리학회지
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• 제25권4호
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• pp.547-567
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• 2022

최근 산업공간의 새로운 변화와 관련된 논의들이 활발하게 이루어지고 있다. 본 연구는 2000년대 이후 전 세계적으로 도시를 중심으로 급격하게 확산되고 있는 메이커스페이스에 주목하였다. 메이커스페이스는 새로운 산업공간의 핵심적 특징을 잘 보여주면서도 사회운동의 과정을 통해 탄생하는 등 관련 분야의 심도 있는 연구의 필요성이 높다. 이에 본 연구는 산업공간의 도심화에 대한 이론과 그 내부의 장소화에 대한 논의를 토대로 메이커스페이스의 도시성과 장소성을 분석하고 그 함의를 도출하고자 하였다. 먼저, 메이커스페이스의 도시성은 도시 내부의 상업 및 주거지역, 산업시설로 진입하는 현상과 도시의 교육·연구, 산업육성, 문화·여가 등 도시 역량과 연계하는 모습을 통해 나타난다. 또한, 내부에서는 취향의 중시, 자율의 확산, 연결의 강화를 통해 장소성이 형성된다. 본 연구는 미래의 산업공간에 있어 도시 혁신역량과의 결합이 보다 중요해지고 있으며, 그 내부의 가치 창출 매커니즘이 근본적으로 변화하고 있음을 시사한다.