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Proposal of the Measurement Conditions for Hanji-Determination Folding Endurance (한지 내절 강도 시험의 측정조건 제안)

  • Kim, Myoung Nam;Kim, Ji Won;Son, Ha Nuel;Jeong, Sun Wha
    • Journal of Conservation Science
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    • v.37 no.6
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    • pp.689-700
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    • 2021
  • This study aims to optimize the measurement conditions of handmade Hanji paper to reduce the time required for measurement while meeting folding endurance standards, for various basis weights. Thirteen types were selected, including 12 types of Hanji with grammages of 17 g/m2, 30 g/m2, and 45 g/m2, and one type of 75 g/m2 copy paper, and 24 sheets were prepared in the laid and chain directions. Subsequently, folding endurance experiments at different load (14.72 N, 9.81 N, 4.91 N) and specimen width conditions (15 mm, 10 mm, 5 mm) were performed, using a 4-MIT folding endurance tester. The results showed that, for specimen widths of 15 mm and 10 mm under a load of 4.91 N, the folding endurance falls within the reference range (10~10000 times). In particular, reduced folding endurance range and measurement time were observed at a width of 10 mm under a load of 4.91 N. Moreover, the endurance trend lines based on the average values of load and specimen width ranges enabled the prediction of the folding endurance within those ranges, according to the decreasing slope. Furthermore, for a specimen width of 15 mm under a load of 4.91 N, the folding endurance in the comparison group (35 to 17723 times) significantly exceeds the upper limit of the reference range (10~10000 times). Therefore, the measurement conditions of 4.91 N with a specimen width of 10 mm are proposed.

On Vortex Reduction Characteristics of Pump Sump Circulating Water Intake Basin of Power Plant Using Hydraulic Experiment (수리실험을 이용한 발전소의 순환수 취수부 흡입수조의 와류저감에 관한 연구)

  • Eom, Junghyun;Lee, Du Han;Kim, Hung Soo
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.42 no.6
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    • pp.815-824
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    • 2022
  • Among the main facilities of the power plant, the circulating water used for cooling the power generation system is supplied through the Circulation Water Intake Basin (CWIB). The vortexes of various types generated in the Pump Sump (PS) of CWIB adversely affect the Circulation Water Pump (CWP) and pipelines. In particular, the free surface vortex accompanied by air intake brings about vibration, noise, cavitation etc. and these are the causes of degradation of CWP performance, damage to pipelines. Then power generation is interrupted by the causes. Therefore, it is necessary to investigate the hydraulic characteristics of CWIB through the hydraulic model experiment and apply an appropriate Anti Vortex Device (AVD) that can control the vortex to enable smooth operation of the power plant. In general, free surface vortex is controlled by Curtain Wall (CW) and the submerged vortex is by the anti vortex device of the curtain wall. The detailed specifications are described in the American National Standard for Pump Intake Design. In this study, the circulating water intake part of the Tripoli West 4×350 MW power plant in Libya was targeted, the actual operating conditions were applied, and the vortex reduction effect of the anti vortex device generated in the suction tank among the circulating water intake part was analyzed through a hydraulic model experiment. In addition, a floor splitter was basically applied to control the submerged vortex, and a new type of column curtain wall was additionally applied to control the vortex generated on the free surface to confirm the effect. As a result of analyzing the hydraulic characteristics by additionally applying the newly developed Column Curtain Wall (CCW) to the existing curtain wall, we have found that the vortex was controlled by forming a uniform flow. In addition, the vortex angle generated in the circulating water pump pipeline was 5° or less, which is the design standard of ANSI/HI 9.8, confirming the stability of the flow.

The Practice of 'Liberated-ness': An Education Model for Protestant Spiritual Practice (개신교 '자유케 됨'의 영성에 기초한 기독교 영성교육 모형: '자유케 됨'의 실천)

  • Hwang, In-Hae
    • Journal of Christian Education in Korea
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    • v.68
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    • pp.375-415
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    • 2021
  • Although the interest in Christian education of spirituality has increased recently, the practice of the education of spirituality in the Korean Church has been fragmented in the contents and methods without any clear educational purpose of the Protestant tradition. This requires a creative study to seek out the contents and method best suited to realizing the educational purpose of the Protestant tradition, through a rigorous academic methodology. This study proposes just such a creative model for the education of spirituality with an educational purpose based on the core ethos of the Protestant spirituality, integrating the long tradition of spiritual practices of Christianity. First, I survey the teachings on 'the life of faith' of the main leaders of the Protestant church, including Martin Luther, John Calvin, and John Wesley. Through this process, I reveal 'liberated-ness' to be the common purpose of the Protestant leaders, and the core of the practices for that purpose are 'the means of grace,' which has a different meaning from that of the Roman Catholic tradition. I construct the meaning of 'liberated-ness' in a dynamic manner, which begins with the 'liberating will' of God, and is followed by the 'self-giving will' of the believer as the response to the 'grace' of the 'liberating will.' The contact point of these two 'wills' is what I call 'the living membrane of faith.' As a creative synthesis of the above discussions, I propose a model of 'the practice of liberated-ness' for an education in spiritual practice. The purpose of this education is for the learner to become a person who continuously experiences ever-increasing 'liberated-ness' through continuous personal 'encounters' with God, and to become ever more faithful in carrying out practices for the 'liberated-ness' of her or his neighbors. The relationship between the teacher and the learner is that of personal 'encounter' as put forth by Sherrill, and also incorporates elements of 'co-authorship' as conceptualized by Kim. I transform and rename major practices of spiritual discipline according to a principle of 'liberated-ness' based on the Protestant tradition, and these comprise the main content of my spirituality education model. They include: 'lectio divina of encounter,' 'prayer facing the Lord,' 'service in liberation,' 'reflection of liberated-ness,' and 'mutual spiritual direction.' The teaching and learning process draws on Dykstra's methods of coaching and mentoring. The key environment is that of a 'sacramental community' as defined by Moore. Evaluation can be performed only by the learner her/himself. The significance of this model is that it creatively inherits and succeeds the tradition of Christian spiritual discipline from the early church onwards by transforming it through a Protestant spirituality of 'liberated-ness.'

4D Printing Materials for Soft Robots (소프트 로봇용 4D 프린팅 소재)

  • Sunhee Lee
    • Fashion & Textile Research Journal
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    • v.24 no.6
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    • pp.667-685
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    • 2022
  • This paper aims to investigate 4D printing materials for soft robots. 4D printing is a targeted evolution of the 3D printed structure in shape, property, and functionality. It is capable of self-assembly, multi-functionality, and self-repair. In addition, it is time-dependent, printer-independent, and predictable. The shape-shifting behaviors considered in 4D printing include folding, bending, twisting, linear or nonlinear expansion/contraction, surface curling, and generating surface topographical features. The shapes can shift from 1D to 1D, 1D to 2D, 2D to 2D, 1D to 3D, 2D to 3D, and 3D to 3D. In the 4D printing auxetic structure, the kinetiX is a cellular-based material design composed of rigid plates and elastic hinges. In pneumatic auxetics based on the kirigami structure, an inverse optimization method for designing and fabricating morphs three-dimensional shapes out of patterns laid out flat. When 4D printing material is molded into a deformable 3D structure, it can be applied to the exoskeleton material of soft robots such as upper and lower limbs, fingers, hands, toes, and feet. Research on 4D printing materials for soft robots is essential in developing smart clothing for healthcare in the textile and fashion industry.

A Servicism Model of the New Economy System (서비스주의 경제시스템의 구조와 운용 연구)

  • Hyunsoo Kim
    • Journal of Service Research and Studies
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    • v.11 no.1
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    • pp.1-20
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    • 2021
  • This study was conducted to derive a model of a sustainable economic system for humanity in the era of service economy that requires a paradigm shift. A new long-term sustainable development model has been built on the basis of thousands of years of economic operation experience. Currently, the world is operating the capitalism as the main economic system because there is no better alternative, and the changing economic and social environment such as the advent of the 4th Industrial Revolution is exacerbating the problems of the capitalism, such as job shortages and inequality. In this study, we analyzed the economic management system experienced by human society, and derived an economic system model that is ideal for the modern and future society and is sustainable in the long term. The conditions for a long-term sustainable economic system were presented first. It must be a model that can solve the problems of the current economic system. It must be a model that is faithful to the characteristics of the modern economic society and the nature of the economy itself. And since the new economic system is for humanity, it must be based on the common principles of human society. It should be a model that continuously guarantees core values such as equality and freedom required by human society. After analyzing the problems of the current economic system and analyzing the conditions required for the new system, the basic axioms that the new economic system should be based on were presented, and a desirable model was derived based on this. The structure of the derived model and the specific operation model were presented. In the future, research is needed to specify the operational model so that this model can be settled well in different environments for each country.

대순사상의 인문정신과 인류평안의 이념

  • 잔스촹
    • Journal of the Daesoon Academy of Sciences
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    • v.21
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    • pp.199-254
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    • 2013
  • 대순사상은 인간의 행위와 정신적 틀, 즉 몸과 마음을 닦고 세상을 다스리며 백성을 평안하게 하는 도리를 설파하고 있다. 우주 공간의 질서와 깊은 연관을 맺는 이러한 도리는 인간 자신의 인지(認知)와 심신 수양의 내용을 포함하며, 사람이 사회와 우주자연과의 관계를 어떻게 처리해 나갈 것인지에 관한 문제도 다루고 있다. 따라서 대순사상을 인문이라는 관점에 입각하여 분석해 볼 필요가 있다. 이탈리아에서 시작된 서양의 인문주의와 비교해 볼 때, 중국 전통의 인문정신은 인류 개체의 창조력과 그 성과를 인정하고, 인격적 수양과 개선을 주장하며, 사회의 조화를 강조하는 한편, 인류가 반드시 천지인의 조화로운 관계 속에서 개체와 전체의 생존을 파악해야 함을 강조한다. 이러한 인문정신은 『전경』에서도 찾아볼 수 있다. 그 하나가 모악산과 단주(丹朱)에 대한 서술인데, 모악산은 산 즉 '간'(艮)괘이며 단주는 적색에 상응하니 곧 '리'(離)괘가 된다. 이 두 괘가 서로 조합하면 '비(比)'괘가 되며, 『주역』의 비괘와 연관하여 서로 간의 모순을 없애고, '바둑'을 두는 기법을 거울삼아 심성을 다스리며, 인격을 완성하고, 인신이 조화를 이루도록 하며, 사회를 안정시킬 것을 말한다. 대순 신앙의 최종 목표는 지상천국을 건설하는 것인데, 이런 목표를 실현하기 위해서는 인격수양을 그 출발점으로 삼아야 한다. 인격수양의 목표는 바른 도인이 되기 위한 것이며, 이를 위해서는 수도 공부를 해야만 한다. 수도는 춘추시기 노자 이래로 유구한 문화적 전통을 지닌 것이지만, 대순진리회는 한국사회 역사의 경향과 현실의 필요에 부응하여 수도 이론을 새롭게 수립하였다. 이를 살펴보면, 대순진리회는 수도자가 '성(誠), 경(敬), 신(信)'에 힘쓰는 품격 함양을 매우 중시한다. 또 도인들이 가정의 화목에 힘써야 하며, 솔선수범하는 도인으로서 사회의 모범이 되어야 한다고 말한다. 이렇게 볼 때, 대순진리회는 '인도'(人道)를 함양함을 강조하고 있으며, 이것은 전통적인 유가에서 말하는 '수신, 제가' (修身, 齊家)의 정신과 그 의미가 맞닿아 있다. 또한 중국 도교의 '선도(仙道)를 이루고자 하면 먼저 인도(人道)를 행하라'는 사상적 취지와도 일치한다. 대순진리회에서 수도의 최종 목표는 도통이다. 도통은 수도자가 매우 높은 경지에 이르게 되었을 때 가지는 특수한 능력과 정신의 경지이다. '도통'에 대한 기록은 『장자·제물론』, 『문자』의 「부언편>(符言篇) 등에서 찾아볼 수 있는데, 대순진리회가 말하는 도통은 중국의 도가 전통에 보이는 도통과도 연관되지만 강한 인륜수양(人倫修養)적 특색을 지니고 있다는 점에서 차이가 있다. 이것은 대순진리회가 가지는 중요한 인문적 함의라 하겠다. 대순진리회는 수도 공부로써 광제창생·보국안민·지상천국건설의 사회적 이상을 실현하고자 한다. 조화로운 사회적 관계를 수립하기 위한 토대는 대순진리회의 종지 첫 번째인 음양합덕이다. 음양합덕은 대순진리의 인문 취지의 이론적 기초를 형성하는 사상이다. 음양합덕의 철학적 사고는 종지 두 번째인 신인조화(神人調化)의 이상으로 이어진다. 신인조화는 『상서·순전』(尙書·舜典)의 신인이화(神人以和)에서 그 사상적 연원을 찾아 볼 수 있다. 다만 신인이화가 율려 조화의 '결과'를 표현한 것이라면, 신인조화에서 중시하는 것은 '과정'이며 인간과 신의 상호작용이라는 점에 그 특징이 있다. 신인조화를 이루기 위해서는 공부를 해야 하며, 그 배후에는 인본(人本)의 사상이 깃들어 있다. 그것은 종지 세 번째인 '해원상생'의 내용에서 더욱 명확하게 드러난다. 신인조화가 인간과 신의 관계를 조화롭게 하는 것을 말한다면, 해원상생은 인간과 인간의 관계를 조화롭게 하는 것을 말한다. 또 다른 한편으로는 긴 역사의 과정 속에서 맺힌 원을 풀어 우주의 기운을 잘 통할 수 있게 하고 인간 사회의 정상적인 교류를 이루도록 한다. 이러한 내용은 사회적인 인문적 관심과 배려를 다분히 포함하고 있는 것이다. 대순진리회의 종지 네 번째인 도통진경은 수도의 가장 높은 경지를 말하는데, 이러한 이념은 노장 일파의 도가 학자들이 말한 순박한 본성으로 회귀하자는 정신에서 그 원류를 찾을 수 있을 것이다. 또한 이는 한진(漢晉)시대 이래 중국 도교가 추구했던 '진경' 의 의미와도 합치된다. 그러나 시대와 환경이 다름으로 인해, 대순진리회의 '진경'은 사회생활의 의미까지 내포한다. 비록 대순진리회의 경전이 인본(人本)을 명확히 밝히고 있지는 않으나, 대순진리회의 요의(要義) 중 하나인 인존사상은 대순진리회의 인문정신을 말해주는 것이다. 인존사상의 직접적인 기능은 평안(平安)으로서 삶을 이롭게 하는 것이다. 대순진리회는 우주대원의 진리를 '도'라 하였는데 이러한 '도'는 중국의 도가에서 말하는 '도'와 동일하며, 여기에는 '안(安)'의 의미가 포함되어 있다. 대순진리회의 신조 중 '안심', '안신'은 마음을 정(靜)하게 하고, 몸을 편하게 하는 것으로 볼 수 있지만, 심신의 공포와 두려움을 떨쳐내어 안전과 보호를 얻는다는 의미도 있으므로 결국 평안이 전제가 된다. 이렇듯 대순진리회에서는 '평안에 대한 희구'를 근본으로 하여 신앙인들이 열심히 수도에 정진하고 있다. 대순진리회가 인류 평안을 기본으로 하는 종교라는 점에서, 반드시 세인들의 환영을 받을 것임을 믿어 의심치 않는다.

Basic Study on Historical Repair Techniques for Landscape Architectural Facilities - Focusing on Government-managed Spaces in Joseon Dynasty - (전통조경 시설물의 역사적 수리기법에 관한 기초연구 - 조선시대 관영공간을 중심으로 -)

  • Kim, Min-Seon;Oh, Jun-Young
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.41 no.4
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    • pp.8-20
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    • 2023
  • Although the landscape architectural facilities need to be repaired according to historical and authentic techniques, the repair criteria of the standard specification for repairing cultural heritages still remain at a theoretical level, and there are little research analyzing detailed techniques from specific cases. This study discussed the repair techniques based on historical facts, around terraced flower beds, ponds, waterways and pavement in the government-managed spaces in the Joseon Dynasty. It analyzed the materials and finish of stone wall elements, the structural reinforcement and backfill materials, and topsoil surface protection measures, and drew out stones for foundation reinforcement, plastering material for agglutination, and stone processing techniques for the terraced flower beds. It examined the materials and structures of the rock revetment, foundation reinforcement and waterproofing techniques and drew out the outstanding characteristics of the foundation work, the recycle of used elements and the management of water quality, for the ponds. It primarily investigated the materials, foundation reinforcement and waterproofing techniques and discovered the repair techniques such as cover stone finishing methods, foundation and backfill materials, and flow reduction methods, for the waterways. Finally, it provided actual cases of the foundation composition, auxiliary materials and tools, and the use of cyperaceae and highlighted the existence of professional craftsmen called Bangjeonjang(方磚匠), for the pavement. This study is expected to be a staring point for discovering the repair techniques for landscape architectural facilities and used as basic data for revising specifications in the future.

The Reordering Works of Heaven and Earth in Daesoon Thought and the Horizon of the Earthly Paradise from the Perspective of Cultural Ecologism: Focusing upon the Sustainable Gaze of Dissolution and Reconciliation (문화생태주의에서 본 대순사상의 천지공사와 지상선경의 경계 - 해소와 화해의 지속가능한 시선 -)

  • Kim Yon-jae
    • Journal of the Daesoon Academy of Sciences
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    • v.49
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    • pp.93-125
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    • 2024
  • The article takes a critical perspective that reunderstanding the canon of Daesoon Thought is necessary to expand its application to the needs of modern society given the rapid speed of societal changes. The key point is the emergence of a cultural ecologism within Daesoon Thought. What is called the cultural ecologism is focused upon the sustainable horizon of unifying culture and ecology in the organic structure of a total-life culture. A reciprocal unity of culture and ecology is characteristic of a coherent whole with an original unitary process in the circle of Nature. Cultural ecologism, therefore, aims at seeking after the sustainability of culture wherein the value of culture is integrated in the grand stream of the ecological spirit of Nature. In the Late Joseon Dynasty, Daesoon Thought paid attention to the Great Opening (開闢) to secure the people's livelihoods and it offered edification concerning anti-feudalism in a dimension of realistic awareness which guided people's lives. The process of the Great Opening functions as a process for the world of the Reordering Works of Heaven and Earth (天地公事) which culminate in the experience the Earthly Paradise (地上仙境) of the Later World (後天). In the cultural ecologism of Daesoon Thought, this course is equivalent to a process of Haewon (grievance-resolution) in the sense of dissolution and reconciliation. From the wide umbrella of cultural ecologism, consequently, it is possible to say that Daesoon Thought can arrive at the reality of the Earthly Paradise (地上仙境) through the Great Opening of the Later World, in which human beings can enjoy the infinite vitality of the universe from within their own finite vitality.

The Legal Theory on the Civil Execution against Aircraft (항공기 집행에 관한 법리)

  • Kwon, Chang-Young
    • The Korean Journal of Air & Space Law and Policy
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    • v.30 no.2
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    • pp.83-153
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    • 2015
  • As our economy grows and the number of aircraft increase, the number of civil execution against aircraft cases are likely to increase as well in the future. The purpose of this article is to present the legal theory on the civil execution against aircrafts by drawing on the legal theory on the civil execution against vessels which constitute a relatively large number of cases thus observed. The provisions of the civil execution against immovables or vessel, shall basically apply mutatis mutandis to the civil execution against aircraft or light aircraft. The civil execution against ultra-light flying devices or a foreign aircraft shall be executed in conformity with the civil execution against movables. There are a compulsory auction, an auction to execute a security right to aircraft, and an auction under the right of retention, etc. in the civil execution against an aircraft. A compulsory execution against an aircraft means an execution carried out by a creditor against a debtor's aircraft to obtain satisfaction of claims for the purpose of payment of money. The court of execution of a compulsory execution against an aircraft shall be the district court having jurisdiction over the airport of stoppage or storage of such aircraft at the time of seizure. The forums of execution of a compulsory execution against an aircraft shall be exclusive forums. When a court has rendered an order on commencing an auction, it shall order an execution officer to receive a certificate of the aircraft's registration and other documents as required for its operation, and to submit them to the court. A court may revoke the procedures for a compulsory auction when an execution officer fails to obtain a transfer of the aircraft's registration certificate, etc. and the location of the aircraft is not evident, not later than an elapse of 2 months from the date on which an order on commencing an auction has been rendered. In the case where it is deemed that there exists a business-related need or other based on proper reasoning, the court may permit the aircraft's operation, upon the motion submitted by the debtor. In this case, there shall be a consent from the creditor, the highest bidder, the next highest bidder and successful bidder. A court may, upon a motion submitted by the creditor, make the dispositions required for observing and preserving the aircraft. When a debtor has submitted the documents under subparagraph 2 or 4 of the Article 49 of the Civil Execution Act, and furnished the guarantee equivalent to the claims of the execution creditors and the creditors demanding a distribution and to the costs for execution, before a declaration of bid, the court shall, upon request, revoke other procedures than those for distribution. The provisions of a obligatory auction against vessel or aircraft and an auction to execute a security right to real estate or vessel, shall apply mutatis mutandis to an auction to execute the security right to aircraft. In an auction to execute the security right to aircraft case, an executive title is not necessary. An executory exemplification is not necessary in an application for an auction to execute the security right to aircraft. A court should examine the existence of security right and claim secured. No order on commencing an auction procedure shall be issued with non-existence or invalidity of the security right and absence or extinguishment of the claim secured. Furthermore, these prohibitions are the reason of a decision on non-permit for sale, the court overlooked these prohibitions, and the decision on a permit for sale became final and conclusive, the successful bidder who paid the price and registered of ownership could not acquire ownership of the aircraft sold. A court may render a ruling to put plural aircrafts up for a blanket auction, only when they are in restraint and related matter (Supreme Court Order 2001Ma3688 dated on August 22, 2001). A righter of retention on aircraft may file a request for an auction against the aircraft. The provisions of an auction to execute a security right to aircraft shall apply mutatis mutandis to the formal auction. Airport facility fee and an aircraft are not in restraint and related matter, so an airport management corporation does not hold the right of retention on the aircraft (Supreme Court Decision 2011Da29291 decided on April 10, 2014). In an auction in accordance with the right of retention, all encumbrances (e.g., mortgages) on the sold aircraft shall be extinguished by a sale under the legal conditions for sale. Not only creditors who have claims for preferential payment but also general creditors could demand for distribution. The precedence of the claim of the right of retention on aircraft and that of general creditor's claims are equal.

Rationalization of Fertilizing and Development of Fetilizer (시비(施肥)의 합리화(合理化)와 비종개발(肥種開發))

  • Lim, Sun-Uk
    • Korean Journal of Soil Science and Fertilizer
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    • v.15 no.1
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    • pp.49-50
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    • 1982
  • The objective of this paper is to review the changes in fertilizer use pattern and to discuss some aspects of the fertilizer development in Korea. Fertilizer consumption in Korea have steadily increased to triple the application rates of N, P and K during the 15 years from 1965 to 1980, and Korea became one of the countries which apply fertilizers at the highest rate. The ratio of N: $P_2O_5$: $K_2O$ in fertilizer consumption changed from 55.4 : 31.4 : 13.1 in 1965 to 54.0 : 23.8 : 22.2 in 1980. It can be said that Korean farmers practise a balanced fertilization at least in view of fertilizer consumption as compared to other developing countries. However, differences in soil properties, crops, and climate varying as region were not reflected on fertilization. In the technological development of fertilizer, the chemical form and composition of the fertilizer as well as the suitability to the specific crops must be taken into consideration for the efficient use of fertilizers. Although organic fertilizers and manure are accepted as minor element suppliers, it is necessary to add minor elements into chemical fertilizers on the industrial process. Industrial waste may be used for the agricultural production as a measure of pollution control providing careful study on the waste.

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