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Biogeochemistry of Methane in Water and Sediment: Methane Generation in Coastal Areas with Bottom Water Hypoxia (메탄의 생지화학적 거동과 한국 연안해역 저(빈)산소 층 발달에 따른 메탄 생성)

  • DONGJOO JOUNG
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.28 no.3
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    • pp.95-120
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    • 2023
  • Methane (CH4) is a key greenhouse gas in the atmosphere with 85 times greater greenhouse potent relative to carbon dioxide (CO2). The atmospheric concentration of CH4 is rapidly increasing due to the intensive usage of CH4 and the thawing of the cryosphere. Additionally, with the current warming of ocean water, the dissociation of gas hydrates, an ice-like compound and the largest reservoir of CH4 on Earth, is expected to occur, resulting in the release of CH4 from the seafloor into the overlying water and atmosphere. Moreover, bottom water hypoxia is another concern that potentially introduces greenhouse gases into the atmosphere. With ongoing global warming and eutrophication, the size and duration of bottom water hypoxia are rapidly increasing. These low-oxygen conditions would relocate the redox zone shallower in sediment or in the water column, causing the release of CH4 into the atmosphere and thereby intensifying global warming. However, there exists a gap in the understanding of CH4 dynamics including its generation in relation to bottom water hypoxia. Therefore, this review article aims to understand the relationship between CH4 and bottom water hypoxia and to draw attention to CH4 investigation in Korea.

Seismic Performance Evaluation of Mechanically Jointed PE Pipeline by Response Displacement Method (기계식 이음 PE관의 응답변위법 기반 내진성능평가 요령)

  • DongSoon Park
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.27 no.4
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    • pp.23-32
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    • 2023
  • The seismic performance of buried PE pipes is reported to be favorable due to their exceptional elongation capacity at break. Although a seismic performance evaluation procedure based on the response displacement method has been summarized in Korea for fusion-bonded PE pipes, there is currently no procedure available for mechanically jointed PE pipes. This article aims to present a seismic performance evaluation procedure based on the response displacement method specifically designed for mechanically jointed PE pipes in Korea. When employing the mechanical joining method for PE pipes, it is recommended to adhere to the evaluation procedure established for segment-type pipes. This involves assessing the stress induced by the pipe, the expansion and contraction strain of the joint, and the bending angle of the pipe joint. Furthermore, the coefficient of inhomogeneity of the soil, which is necessary for estimating the axial strain of the ground, is introduced. Additionally, a computation method for determining lateral displacement and reconsolidation settlement in soil susceptible to liquefaction is proposed. As a result of the sensitivity analysis considering the typical soil condition in Korea, the mechanically jointed PE pipe with a certain quality was shown to have good structural seismic safety when soil liquefaction was not considered. This procedure serves as a valuable tool for seismic design and evaluating the seismic performance of mechanically joined buried PE pipes, which are primarily utilized for connecting small-diameter pipes.

Review of 2022 Major Medicla Decisions (2022년 주요 의료판결 분석)

  • Lee Jeongmin;Yoo Hyunjung;Park Taeshin;Jeong Heyseung;Cho Woosun;Park Nohmin
    • The Korean Society of Law and Medicine
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    • v.24 no.2
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    • pp.79-117
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    • 2023
  • Among the healthcare-related judgments handed down in 2002, there was a significant ruling on the timing of the duty of explanation, stating that, in order to ensure the exercise of the patient's right to self-determination, the patient must be given time to consider and decide on the risks and side effects of a medical procedure in specific circumstances. In addition, in a case where an insurance company claimed unjust enrichment against a medical institution on behalf of its insureds, the court provided a clear standard by distinguishing between active and passive requirements regarding the need to preserve the right of subrogation of creditors. In the area of medical administration, there was a ruling that clarified that a medical institution's business suspension under the National Health Insurance Act is directed against the medical institution, a ruling that broadly recognized causation in a case of compensation for side effects of corona vaccination, and a ruling on the scope of a medical practitioner's license, such as the use of ultrasound devices by an oriental medicine practitioner. In a case involving a patient's claim for eviction from a medical institution, the court reviewed a ruling on just cause for termination of a hospitalization contract in relation to Article 15(1) of the Medical law.

Analysis of Research Trends in New Drug Development with Artificial Intelligence Using Text Mining (텍스트 마이닝을 이용한 인공지능 활용 신약 개발 연구 동향 분석)

  • Jae Woo Nam;Young Jun Kim
    • Journal of Life Science
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    • v.33 no.8
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    • pp.663-679
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    • 2023
  • This review analyzes research trends related to new drug development using artificial intelligence from 2010 to 2022. This analysis organized the abstracts of 2,421 studies into a corpus, and words with high frequency and high connection centrality were extracted through preprocessing. The analysis revealed a similar word frequency trend between 2010 and 2019 to that between 2020 and 2022. In terms of the research method, many studies using machine learning were conducted from 2010 to 2020, and since 2021, research using deep learning has been increasing. Through these studies, we investigated the trends in research on artificial intelligence utilization by field and the strengths, problems, and challenges of related research. We found that since 2021, the application of artificial intelligence has been expanding, such as research using artificial intelligence for drug rearrangement, using computers to develop anticancer drugs, and applying artificial intelligence to clinical trials. This article briefly presents the prospects of new drug development research using artificial intelligence. If the reliability and safety of bio and medical data are ensured, and the development of the above artificial intelligence technology continues, it is judged that the direction of new drug development using artificial intelligence will proceed to personalized medicine and precision medicine, so we encourage efforts in that field.

Criminal Law Issues and Challenges Due to Changes in the Healthcare Paradigm (헬스케어 패러다임 변화에 따른 형사법적 쟁점과 과제)

  • Sun, JongSoo
    • The Korean Society of Law and Medicine
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    • v.24 no.1
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    • pp.43-65
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    • 2023
  • The healthcare industry is a digital healthcare that combines technology based on the 4th Industrial Revolution, dealing with information on individual health and medical care, and is a fusion of health care services and medical science and technology. It is questionable whether digital healthcare according to the paradigm change can be discussed by the concept of medical practice under the existing Medical Act. There is no clear definition of the concept of medical practice in the Medical Service Act, but the concept is established through precedents. In addition, under the Medical Service Act, the subject of medical practice is limited to medical personnel. However, digital healthcare sometimes diagnoses and treats diseases using digital technology by medical personnel. On the other hand, what is possible by non-medical personnel is digital healthcare. This is because digital healthcare is understood as a concept that includes health care such as exercise, eating habits, and weight control. For this reason, if the concept of medical practice under the "Medical Act" on digital healthcare is included, it is subject to criminal punishment for "unlicensed medical practice" prescribed in Article 27 of the "Medical Act". In the health and medical industry, digital transformation and convergence with information and communication technology are rapidly progressing. As a result, there is a need to newly define it as 'digitalized medical practice' or 'information and communication technology (ICT)-based medical practice' separately from existing medical practices. The concept of medical practice has variability, not a fixed and invariable concept. However, in response to this demand, it is not an infinite expansion of the concept of medical practice, but a request to reset its scope. Therefore, the concept of medical practice should be legislated by reflecting the demand of consumers for the medical service system.

Necessity of revision of the mandatory medication guidance regulation under the Pharmaceutical Affairs Act (약사법상 복약지도의무 규정의 개정 필요성)

  • Dawoon Jung
    • The Korean Society of Law and Medicine
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    • v.24 no.2
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    • pp.119-145
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    • 2023
  • The Pharmaceutical Affairs Act stipulates medication counseling as an obligatory requirement in the case of preparation of medicine. In fact, there are many cases where pharmacists only tell patients the dose and time and do not properly guide them on taking medications. However, in light of the current situation where non-face-to-face treatment is being attempted, there is a high possibility of drug-taking accidents due to insufficient medication guidance. In addition, as an aging society progresses, the need for explanations on pharmaceuticals is increasing. If a pharmacist causes damage to a patient by failing to give appropriate medication guidance, the patient can claim compensation for damages. In addition, if a drug accident occurs due to a conflict between the pharmacist's duty to guide medication and the doctor's duty to explain, a joint tort is established between the pharmacist and the doctor. Nevertheless, there are cases in which only doctors are judged to bear the tort liability. However, the Pharmaceutical Affairs Act includes providing information for the selection of over-the-counter drugs in the medication guidance as part of the medication guidance obligation. Therefore, in order to reconsider the importance of the medication-taking guidance duty, it is necessary to define the medicationaking information provision method and the medication-taking guidance duty as separate concepts. In addition, it is necessary to amend related regulations centered on patients so that medication guidance, such as side effects of medicines and interactions with concomitant medications, can be made in detail.

Introducing the Digital Culture Map of Daesoon Jinrihoe: Answering the Need for Information on Daesoon Jinrihoe via the Digital Culture Map of Daesoon Jinrihoe (대순진리회 전자문화지도 개발 시론 - 대순진리회 전자정보 제공 양상과 전자문화지도 개발의 필요성 -)

  • Byun Ji-sun
    • Journal of the Daesoon Academy of Sciences
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    • v.44
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    • pp.97-140
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    • 2023
  • This article is meant to serve as an introduction to the development of digital culture map of Daesoon Jinrihoe. Recently there has been frequent discussion over the need to provide information on the website of Daesoon Jinrihoe's Yeoju Headquarters Temple Complex, and the further need to produce a digital culture map of Daesoon Jinrihoe. The production of digital culture map of Daesoon Jinrihoe has the advantage of being able to publicize and enhance its status worldwide beyond simply building digital archives, collecting data, visualizing Daesoon Jinrihoe materials, and acquiring tools for research on Daesoon Jinrihoe. Therefore, the development of Daesoon Jinrihoe's digital culture map is expected to be a step for Daesoon Jinrihoe to leap forward globally. Next in the process would be the study of data. The current status of Daesoon Jinrihoe's data and analysis of the contents will enable researchers to proceed to the next stage. In the production of digital culture map of Daesoon Jinrihoe, the next step to be studied after data research is to review precedents in the production of digital culture maps related to religion. Researchers will be able to review domestic precedents and overseas precedents, and based on those, it will be possible to suggest a direction for developing Daesoon Jinrihoe's digital culture map.

Yeongdae from the Perspective of Material Religion: Transcending the Material and Non-material Yeongdae (물질종교 관점에서 본 영대 -물질 영대와 비물질 영대 가로지르기-)

  • Cha Seon-keun
    • Journal of the Daesoon Academy of Sciences
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    • v.44
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    • pp.53-96
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    • 2023
  • This article apprehends Yeongdae (靈臺), the most sacred shrine of Daesoon Jinrihoe which has earlier historical precedents, as an example of material religion. In East Asia, the first Yeongdae was a structure that King Wen of Zhou commissioned to be built. As the time passed by, the meaning of Yeongdae was changed to signify a mental yeongdae, the object and the aim of cultivation, and the notional mindset that appears in the Daoist meditation, Cunsi (存思, visualization). This implies that Yeongdae has signified both material and non-material objects. Throughout most of history, these two concepts had never been related to each other, but shifted in form and meaning depending on context. Daesoon Jinrihoe, which emerged in the modern era of Korea, used the concept of investiture of gods and combined the two into one. Accordingly, the Yeongdae, referred to by King Wen to indicate his shrine, was expressed as a spot wherein the gods were enshrined on the earth. As an innovation, Daesoon Jinrihoe argued that gods correspond to properly eligible human beings according to the degree of their cultivation and that sacred space was instead defined a spot within the human mind, a mental yeongdae, where the gods could be enshrined into humanity (神封於人). From the perspective of Lévi-Strauss, the factors that are discovered in the tradition of East Asia, namely, the Yeongdae of King Wen and the mental yeongdae of Zhuangzi can combined with consistency and established in the doctrinal system of Daesoon Jinrihoe. Such an attempt refers to bricolage which re-creates the traditional concepts of the past. In this regard, the concept of invented tradition coined by Eric Hobsbawm could also be used to conclude that the Yeongdae (the shrine of gods) of Daesoon Jinrihoe can be expressed as an invented Yeongdae, which transcends the existing categories of material yeongdae and non-material yeongdae.

Titanium Isopropoxide (TTIP) Treatment Strategy for V2O5-WO3/TiO2 SCR Catalysts with a Wide Operating Temperature (넓은 작동 온도범위를 가지는 V2O5-WO3/TiO2 SCR 촉매 개발을 위한 티타늄 이소프로폭사이드(TTIP) 활용 전략)

  • Jaeho Lee;Gwang-hun Cho;Geumyeon Lee;Changyong Yim;Young-Sei Lee;Taewook Kim
    • Applied Chemistry for Engineering
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    • v.34 no.4
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    • pp.357-364
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    • 2023
  • Selective catalytic reduction (SCR) is the most effective method for reducing nitrogen oxide emissions, but the operating temperature range of V2O5-WO3/TiO2 catalysts is narrow (300~400℃). In this study, a new catalyst with an operating temperature range of 200~450℃ was developed. The catalyst poison, ammonium bisulfate, generated during the SCR process can be removed by heating above 350℃. To increase the number of active sites and promote the dispersion of active materials, titanium isopropoxide (TTIP) treatment was performed on the TiO2 support with various TTIP/TiO2 mass ratios. Among them, the 5 wt% TTIP loaded catalyst showed improved performance due to higher thermal stability caused by high W dispersion and the formation of V5+. In addition, the 5 wt% TTIP-loaded catalyst prepared by a one-step co-precipitation method showed greater V-OH and W-OH dispersion and enhanced interactions in contrast to conventional methods, resulting in higher catalytic activity at lower temperatures. This review article aims to provide an accessible explanation for researchers investigating how to improve the surface properties of TiO2 catalysts using TTIP.

Cultural Horizon of Freedom (자유의 문화적 지평)

  • Kwon, Su Hyeon
    • Journal of Ethics
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    • no.76
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    • pp.305-329
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    • 2010
  • The problem of freedom is inseparably related to human life. It makes this not to be regarded as a problem restricted to the professional domain of ethics. It suggests rather that the problem of freedom is intimately connected with the philosophical groundwork for discussing the future direction of society, culture and science, and its regulative idea, a philosophical discussion which comes up inevitably with various social, economic and political problems, and problems related to the spirit of law. In this view, when we want to explain the problem of freedom as a fundamental one in reference to future direction of humanities and to find out a solution to this, our research only in accordance with the approach of history of philosophy runs into difficulties. The reason is that the problem of freedom has nowness together with historicity. Finding this problem to be a present one in our concrete human life, we can discuss it more meaningful under the methodological frame changed and developed by philosophical reflections since the modern age. And here I think a culturalistic approach reinterpreting hermeneutic insight and pragmatistic context methodologically can provide a pertinent clue for a theoretical work to investigate the problem of freedom and to find a solution to that because this approach considers historicity and nowness. For this purpose analysing truth intersubjectively and understanding freedom critically, this article tries to reconstruct symbolic interpretation and the concept of self constructed in community of language and action as a cultural horizon of freedom.