• Title/Summary/Keyword: Modern Reconstruction

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A Modern Reconstruction of the Problems on the Sums of Sequences in MukSaJipSanBup and its Pedagogical Applications (묵사집산법(?思集算法)에 수록된 퇴타개적문(堆?開積門)의 현대적 재구성 및 수학교육적 활용 방안)

  • Yang, Seonghyun
    • Journal for History of Mathematics
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    • v.33 no.1
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    • pp.1-19
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    • 2020
  • Under 2009 Revised Mathematics Curriculum and 2015 Revised Mathematics Curriculum, mathematics teachers can help students inductively express real life problems related to sequences but have difficulties in dealing with problems asking the general terms of the sequences defined inductively due to 'Guidelines for Teaching and Learning'. Because most of textbooks mainly deal with the simple calculation for the sums of sequences, students tend to follow them rather than developing their inductive and deductive reasoning through finding patterns in the sequences. In this study, we reconstruct 8 problems to find the sums of sequences in MukSaJipSanBup which is known as one of the oldest mathematics book of Chosun Dynasty, using the terminology and symbols of the current curriculum. Such kind of problems can be given in textbooks and used for teaching and learning. Using problems in mathematical books of Chosun Dynasty with suitable modifications for teaching and learning is a good method which not only help students feel the usefulness of mathematics but also learn the cultural value of our traditional mathematics and have the pride for it.

The General Plan of Reconstruction of Pyongyang and the Role of Kim Jung-hee: Myths and History (건축가 김정희와 평양시 복구 총 계획도: 신화와 역사)

  • Park, Dongmin
    • Journal of architectural history
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    • v.27 no.2
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    • pp.125-138
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    • 2018
  • During the 1950s, the North Koreans rebuilt their capital-Pyongyang-as a modern city under the principle of Soviet urban design. One North Korean architect, Kim Jung-hee, has been widely credited since the late 1980s as the master architect of the General Plan of the city's reconstruction. While Kim Jung-hee played a crucial role in its reconstruction, his heroic image as the founding architect of Pyongyang is considerably attributed to North Korea's mythical narratives rather than his historical activities. This paper argues that Pyongyang's postwar urban design was not a work made by a single actor, Kim Jung-hee; rather, it was a long-term collaborative project in which a team of North Korean architects and Soviet technical advisors took their respective roles. Beginning in the late 1980s, North Korea, which had been struggling with economic decline and an increasing sense of lagging behind in its rivalry with its Southern counterpart, used heroic narratives during the 1950s' postwar reconstruction period as an important propaganda tool for their regime. In this mythical narrative of Pyongyang's reconstruction, massive economic and technical aid from other communist countries has often disappeared, and the memory of the architects who contributed greatly to the reconstruction but later purged in North Korea have also completely vanished. Kim Jung-hee, meanwhile, remained in this epic as the founding architect who rebuilt the city in faithful accordance with the leadership of Kim Il Sung.

A study on a reconstruction of Gwanghwamun and fluctuation of boulevard in front of Gwanghwamun (1960년대 광화문 중건과 광화문 앞길의 변화)

  • Kang, Nan-hyoung;Song, In-Ho
    • Journal of architectural history
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    • v.24 no.4
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    • pp.7-18
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    • 2015
  • Gwanghwamun was dismantled and displaced to the east side of the palace, at that time, the Chosun Government General Building was constructed in the Gyeongbokgung palace. After the Korea war, it remained as a stonework as a result of the fire. In 1968, The Gwanghwamun came back in front of the palace. Then, why it was rebuilt in the 3rd Republic period? What was the reason for selecting concrete? Since the May 16 coup, the military regime had been utilized palace and surrounding urban space to show a visible practice of modernization. Attempting the combination of modern technology in the 1960s and traditional cultural property and reconstructing a city as a pretext called Cultural Heritage conservation was a typical mechanism of the 1960s. In this study, I start by assume that reconstructing Gwanghwamun(1968) was a part of project to change the surrounding urban space of Gwanghwamun than to preserve cultural assets. Two main contributions of the study are following. First, I collect availabe data on the reconstructing surrounding urban space of the Gwanghwamun and re-organize them in chronological order to make them as fragments of a map. Second, I analysis and identify the nature and phase of the Gwanghwamun reconstruction.

On the Reconstruction of Pointwise Power Distributions in a Fuel Assembly From Coarse-Mesh Nodal Calculations (노달계산결과로부터 핵연료 집합체내의 출력분포를 재생하는 방법에 관하여)

  • Jeong, Hun-Young;Cho, Nam-Zin
    • Nuclear Engineering and Technology
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    • v.20 no.3
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    • pp.145-154
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    • 1988
  • This paper is a study on an accurate and computationally efficient method for reconstructing pointwise power distributions from coarse-mesh nodal calculations. The modern nodal codes can calculate global reactor power shapes and criticality very efficiently and accurately. But inherent in the nodal procedures, there is inevitable loss of information on local heterogeneous quantities. In this study, an improved form function method which reflects the exponential transition of the thermal flux near the assembly surface is developed for the reconstruction of the heterogeneous fluxes. Use of the new form function method in several pressurized water reactor (PWR) benchmark problems reduces the maximum errors in the reconstructed thermal flux to those in the reconstructed fast flux. Even for assemblies adjacent to the steel baffle in realistic PWR cores, use of this method also results in improved pointwise power reconstruction.

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A Study on Reconstruction of Naejeon Area at Changdeokgung Palace in 1920 (1920년 창덕궁 내전 일곽의 재건에 관한 연구)

  • Woo, Don-Son;Kee, Se-Hwang
    • Journal of architectural history
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    • v.23 no.3
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    • pp.43-54
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    • 2014
  • Naejeon area at Chandeokgung Palace means the areas of Huijeongdang and Daejojeon area. Huijeongdang or Hall of Brilliant Rule is made for the king, and Daejojeon or Hall of Great Creation is made for the queen. These areas were located nearly and repeatedly burned down and rebuilt several times together, but their forms were largely unchanged. However in 1920, they rebuilt in a very different way. The purpose of this study was to estimate construction plans, progress and completion of Naejeon area's rebuilding. They were reconstructed into eclectic structures as the exteriors were built using basic materials from Gyeongbokgung Palace. So they have traditional-looking appearances, but the interiors consisted of modern equipments and were built by applying foreign style construction techniques. The main floored room of Daejojeon and the area of Huijeongdang were built in standing style by installing radiators and French furnitures. Also, the porch, corridor, storage space and veranda were constructed under the influence of Japanese construction. After the reconstruction, there were changes in the usage of some spaces. Huijeongdang functioned only for Alhyeonso or audience chamber rather than Pyeonjeon or state hall. New organizations created by the Japanese such as Chansi or secretaries office and the Chief secretary's office were included in Naejeon area.

A Ghost-Imaging System Based on a Microfluidic Chip

  • Wang, Kaimin;Han, Xiaoxuan;Ye, Hualong;Wang, Zhaorui;Zhang, Leihong;Hu, Jiafeng;Xu, Meiyong;Xin, Xiangjun;Zhang, Dawei
    • Current Optics and Photonics
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    • v.5 no.2
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    • pp.147-154
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    • 2021
  • Microfluidic chip technology is a research focus in biology, chemistry, and medicine, for example. However, microfluidic chips are rarely applied in imaging, especially in ghost imaging. Thus in this work we propose a ghost-imaging system, in which we deploy a novel microfluidic chip modulator (MCM) constructed of double-layer zigzag micro pipelines. While in traditional situations a spatial light modulator (SLM) and supporting computers are required, we can get rid of active modulation devices and computers with this proposed scheme. The corresponding simulation analysis verifies good feasibility of the scheme, which can ensure the quality of data transmission and achieve convenient, fast ghost imaging passively.

Change of the Old City by the Modernization

  • Nakagawa, Osamu
    • Journal of East-Asian Urban History
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    • v.1
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    • pp.25-54
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    • 2019
  • Kyoto, which was Japan's political and cultural capital for more than a millennium before the dawn of the modern era, shows distinctive characteristics formed in the process of urban modernization. A citizen plaza perfectly fit to a modern city is lying on the east side, but a delayed urban reconstruction in the city center due to a strong conservative self-government awareness, as well as a delayed modernization of tax system, caused disorderly urban sprawl to appear in the suburbs. Thanks to the enactment of urban planning law enacted in 1919 by the government (Ministry of Internal Affairs) and an increasing awareness about the necessity and rationality of urban planning projects, urban renovation took place at a rapid pace. In the meantime, new ways of urban design were sought for and experimented to conserve it as a historical city against the city' quickly changing landscape.

The Pluralism of Ethnic Cultures and Inclusive Development in the Philippines

  • Maohong, BAO
    • SUVANNABHUMI
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    • v.7 no.1
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    • pp.139-155
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    • 2015
  • The relation of culture and development is complicated and multilayered. Inclusive development has been the national strategy of the government of President Benigno Aquino III. However, the role the culture is scarcely mentioned. This paper will try to contextualize development in Philippine history to further show the importance of national consciousness, ethnic cultures, indigenous cultures and modern culture,. This paper concludes that inclusive development of the Philippines will be achieved through glocalization, based on the creative reconstruction of cultures in and out of the Philippines.

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보철 수복시 치간 유두에 대한 고려 사항

  • Lee, Sung-Bok;Lee, Seung-Gyu
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.10 no.1
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    • pp.30-45
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    • 2001
  • In recent years, clinicians' and dentists' esthetic demands in dentistry have increased rapidly. The ultimate goal in modern restorative dentistry is to achieve "white" and "pink" esthetics in the esthetically important zones. Therefore, modern esthetic dentistry involves not only the restoration of lost teeth and their associated hard tissues, but increasingly the management and reconstruction of the encasing gingiva with adequate surgical techniques. Interdental space are filled by interdental papilla in the healthy gingiva, preventing plaque deposition and protecting periodontal tissue from infection. This also inhibits impaction of food remnants and whistling through the teeth during speech. These functional aspects are obviously important, but esthetic aspects are important as well. Complete and predictable restoration of lost interdental papillae remains one of the biggest challenges in periodontal reconstructive surgery. One of the most challenging and least predictable problems is the reconstruction of the lost interdental papilla. The interdental papilla, as a structure with minor blood supply, was left more or less untouched by clinicians. Most of the reconstructive techniques to rebuild lost interdental papillae focus on the maxillary anterior region, where esthetic defects appear interproximally as "black triangle". Causes for interdental tissue loss are, for example, commom periodontal diseases, tooth extraction, excessive surgical periodontal treatment, and localized progressive gingiva and periodontal diseases. If an interdental papilla is absent because of a diastema, orthodontic closure is the treatment of choice. "Creeping" papilla formation has been described by closing the interdental space and creating a contact area. In certain cases this formation can also be achieved with appropriate restorative techniques and alteration of the mesial contours of the adjacent teeth. The presence of an interdental papilla depends on the distance between the crest of bone and the interproximal contact point, allowing it to fill interdental spaces with soft tissue by altering the mesial contours of the adjacent teeth and positioning the contact point more apically. The interdental tissue can also be conditioned with the use of provisional crowns prior to the definitive restoration. If all other procedures are contraindicated or fail, prosthetic solutions have to be considered as the last possibility to rebuild lost interdental papillae. Interdental spaces can be filled using pink-colored resin or porcelain, and the use of a removable gingival mask might be the last opportunity to hide severe tissue defects.

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