• Title/Summary/Keyword: rebuilding

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Adhesives and Sealants Used in Machinery and Equipment Assembly, Maintain and Repair

  • Zhai, Haichao;Li, Yinbai;Lin, Xinsong
    • Journal of Adhesion and Interface
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    • v.3 no.1
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    • pp.30-36
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    • 2002
  • In this paper, some idea about the use of Metal and ceramic filled epoxy adhesive, Anaerobic adhesive and RTV silicone in the assembly, maintain and repair of machinery and equipment is given. Many examples which have been successfully used in Chinese industry are introduced: ${\bullet}$ Wear, Abrasion, Corrosion/Erosion Resistance and Metal Rebuilding Worn shafts, Scored Hydraulic Ram, Bearing Housings, Slurry Pumps (Bodies & Impellers), Slide-ways, Heat Exchangers, Cracked Castings and Molds. Leaking Pipes and Tanks. ${\bullet}$ Locking and Retaining Thread, Bearing, Keyways, Bolts, Nuts, Studs, Gears, Collars, Motors. ${\bullet}$ Scaling and Gasketing Flanges, Pipe Joints, Machined surfaces.

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A Database Approach for Modeling and Querying XML Documents

  • Panseop Shin;Kim, Jeong-Eun;Lee, Jaeho;Haechull Lim
    • Proceedings of the IEEK Conference
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    • 2000.07b
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    • pp.703-706
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    • 2000
  • In recent years. XML applications are being developed in diverse area. Especially, development of XML document repository system associated with database is carrying out widely. The previous researches of XML repository system have several defects which are update and retrieval limitations for the XML document, design limitation for a formal retrieval algorithm and data redundancy. In order to solve the above problems. in this paper, we suggest relational database schemes for overcoming limitations of updating, retrieving, and rebuilding document. And suggest query translation strategy using two-phase translation that consists of pattern analyzing phase and SQL generating phase.

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IP Address Lookup using Segment Trees (세그먼트 트리를 이용한 IP 주소 검색)

  • Lee, In-Bok;Park, Geun-Su;Choe, Yang-Hui;Jeong, Seong-Gwon
    • Journal of KIISE:Computer Systems and Theory
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    • v.28 no.11
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    • pp.613-619
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    • 2001
  • The IP address lookup problem is to find the longest matching IP prefix for a given IP address from the routing table and has been a central bottleneck in speeding up the Internet. In this paper, we propose a new algorithm for this problem based on the segment tree data structure. Given n IP prefixes, our algorithm can do IP address in Ο(log n) time. It also handles the insertion and deletion of IP prefixes efficiently without rebuilding the total data structure.

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Rebuilding Tree Algorithm for Delay-Aware and Energy-efficient Data Aggregation in Wireless Sensor Networks (무선센서네트워크에서 에너지 효율 및 딜레이를 고려한 트리 재구축 알고리즘)

  • Lee, Hyun;Yeoum, Sanggil;Kim, Dongsoo;Choo, Hyunseung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2014.04a
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    • pp.188-189
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    • 2014
  • 무선센서네트워크에서 센서 노드들은 정보를 수집 및 취합하기 위해 다양하게 사용되고 있다. 각 센서들은 베터리 전력을 사용하여 에너지 절약은 가장 중요한 이슈 중 하나다. 현재까지 에너지 소모가 가장 큰 장거리 통신 시 에너지 절약 및 분산제어가 용이한 클러스터링의 데이터 병합 관련 분야는 꾸준히 관심을 받아오고 있다. 최근 이를 기반으로 데이터 병합 시 생기는 딜레이를 최소화하고, 에너지 소비량 도 고려한 다양한 알고리즘들이 제안되었다. 하지만 토폴로지 형성 시 데이터 병합 딜레이와 에너지 효율을 동시에 최적화하는 상황에서 장거리 노드 간 링크 생성 문제는 여전히 해결되지 않고 있다. 본 논문은 이러한 문제점을 해결하기 위해 노드 간 링크를 재구축하여 트리의 구조유지하면서 링크들의 길이를 줄일 수 있는 트리 재구축 알고리즘을 제안한다.

Strategies for Technology Development in Developing Countries: Focusing on Korea

  • Yun, Yeo Gyeong;Shin, Geon-Cheol
    • Asia Pacific Journal of Business Review
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    • v.3 no.1
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    • pp.1-17
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    • 2018
  • South Korea has had a rich history of independent thinking and self-reliance since the Korean Conflict. The war left the country the need for infrastructures in a variety of fields. Instead of relying on aid from foreign nations, however, key figures within South Korea's borders fathered the nation's first government-funded scientific and engineering institute, the Korea Institute of Science & Technology (KIST). Even though KIST encountered numerous obstacles, its commitment to research and development (R&D) would ultimately allow it play a crucial role in the rebuilding of the country. As a result of the institute's success, South Korea was able to move forward economically to become a beacon of hope for developing nations around the world.

Study on Traffic Convenience of Aged People with Mobility Disadvantage: Focusing on Hanam-eup, Miryang-city, Gyeongsangnam-provance

  • In-Ja Lim;Seong-Hak Kim;Kyong-Jin Park
    • Journal of the Korean Society of Industry Convergence
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    • v.26 no.4_1
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    • pp.537-543
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    • 2023
  • According to the statistics, Korea is expected to reach a super-aged society in 2025. In preparation for an aging society, The government is making efforts to improve in social activity and welfare for the elderly people. But in case of people who live in urban-rural mixed cities, They can not benefit from traffic convenience that is essential in social activities. For example, surveys and interviews show that, The dwellers(65+ of some urban-rural mixed cities) have many restrictions on social activities because of mobility disadvantage. Therefore, We propose that expansion for the people who need to use the voucher taxi, Increase of the public bus service and rebuilding of the bus stop terminal. We are looking forward to this study will be used as basic data for transportation policy of urban-rural mixed cities across the country.

A Study on the Production Period and Background of Gyeongbokgungdo (「경복궁도」 제작 시기와 배경 연구)

  • Hong, Hyeon-Do
    • Journal of architectural history
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    • v.32 no.4
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    • pp.51-62
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    • 2023
  • Gyeongbokgungdo depicts the composition and layout of Gyeongbokgung Palace before the Japanese Invasion of Korea in 1592, as well as a monument related to pro-jamrye held at the site of Gyeongbokgung Palace in Yeongjo. Based on literature such as Dongguk Yeoji Seungram, such as Gyeongbokgungdo painted major buildings, government offices, and buildings in the backyard. In addition, the literature and the foot of the mountain, waterway, and Pond, which were identified as the site identified during the reconstruction process, are reflected, and some of the Gyeongbokgungdo contain reconstruction records. As such, Gyeongbokgungdo depicts Gyeongbokgung Palace in the early Joseon Dynasty and facilities built after the Imjin War based on the literature, and seems to have been produced around the time of reconstruction as it reflects the mountain and water system. In addition, the layout of the main hall of Gyeongbokgungdo was partially reflected in the reconstructed Gyeongbokgung Palace and used as a material to understand the layout of Gyeongbokgung Palace in the early Joseon Dynasty.

Emergy Evaluation of Typhoon Maemi in Busan (태풍 매미가 부산시에 미치는 영향에 대한 에머지 평가)

  • Park, KyungMin;Kim, Dong-Myung;Lee, Suk Mo
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.20 no.1
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    • pp.18-25
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    • 2017
  • Damage of both life and property has been increased by natural disaster under the influence of climate change, thus many natural disaster vulnerability researches have been carried out to make adaptation policy and impact assessment of climate change recently. Their method for assessing vulnerability usually have used proxy variables for making vulnerability indices. However, because their results were too qualitative and relative it tends to be hard to make absolute comparison and establish standard of prevention or adaptation ability. Accordingly, this study aimed at quantifying natural disaster vulnerability using emergy through recognizing disaster as the relations between order and disorder by system approach. As a result, ordering energy (4.66E+22 sej/yr) and ordered structure (1.98E+22 sej) of Busan in 2003 and disordering energy (7.80E+18 sej), disordered parts (4.55E+20 sej) and rebuilding energy (3.87E+20 sej) by typhoon Maemi were analysed. And then, this was compared with Hurricane Andrew in Dade County. Through this comparison, if the prevention ability of Busan increases, disordered parts can be reduced against the more powerful disordering energy. Also, prevention for additional damages by disaster is needed to practical rebuilding action. In conclusion, it was able to figure out the impact of disaster quantitatively by natural systems and urban systems showing as common measure. Based on this study and further research to make effective prevention for how much prevention ability should be increased will contribute to producing the scientific data for disaster management policy in future.

Analysis of The Problem of Exercising the Right of Claim for the Sale of the Housing Reconstruction Project (주택재건축사업의 매도청구권 행사 절차의 문제점 분석)

  • Kim, Kil-Chan;Park, Kyoung-Mi;Eom, Sun-Yong;Lee, Myeong-Hun
    • The Journal of the Korea Contents Association
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    • v.11 no.7
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    • pp.508-518
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    • 2011
  • In various urban renewal projects related to real estate, developer in order to conduct the business, must get real estate inside project section directly or receive the consent for project from the owners. It must be carried out by consultation. When it fails, developer, in order to get ownership, adopts 'the Right of Claim for the sale' which has forcibleness. However, because the procedure for implementation of the right of claim for the sale is not clear, conflict between stakeholders is caused and it causes extension of period. Therefore, after examining judgments and references of judicial power for administrative litigation of the Right of Claim for the sale, by researching stakeholders of the housing rebuilding project and based on the results, finding out differences of stakeholders' recognition according to their position and problems of exercising procedure of the Right of Claim for the sale, and by presenting improvement plans of the system of the Right of Claim for the sale, contributing the success of the housing rebuilding project is the purpose of it.

Tethered Cord Syndrome; Surgical Indication, Technique and Outcome

  • Kang, Joon-Ki;Lee, Kwan-Sung;Jeun, Sin-Soo;Kang, Seok-Gu;Lee, Il-Woo;Yoon, Kang-Jun;Ha, Sang-Soo
    • Journal of Korean Neurosurgical Society
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    • v.42 no.2
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    • pp.77-82
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    • 2007
  • Objective : The authors tried to reveal some unique features of lipomeningomyelocele (LMMC), including clinical presentation, factors precipitating onset of symptoms, pathologic entities of LMMC associated with tethered cord syndrome, and surgical outcome in LMMC patients. Methods : Seventy-five patients with LMMC were enrolled in this study. Neuro-imaging and intraoperative findings allowed classification of LMMC into three Types. The patients were divided into two groups by age : A (51 patients), from birth to 3 years, and B (24 patients), from 3 to 24 years. For prevention of retethering of the cord, a mega-dural sac rebuilding procedure was performed in 15 patients. Results : During a mean postoperative follow-up period of 4 years, the surgical outcome was satisfactory in terms of improved pain and motor weakness, but disappointing with reference to the resolution of bowel and bladder dysfunction. Among these 75 patients with LMMC, preoperative deficits were improved after surgery in 29 (39%), remained stable in 28 (37%), changed slightly in 13 (17%), and worsened in 5 (7%). Patients in group A achieved better outcomes than those in group B. Depending on the type of lesion, patients with types I and II LMMC have better outcomes than those with type III LMMC. Finally, retethering of the cord with neurological deterioration occurred in 4 (5.3%) of the 75 patients, but no retethering was found in the 15 patients who were recently treated with a mega-dural sac rebuilding procedure. Conclusion : Our data continue to support the opinion that early diagnosis and optimal surgery are still essential for the treatment of patients with LMMC, since there is a high likelihood of residual neurological functions that can be preserved. Based on our surgical experience of untethering and decompression of lipomas, a mega-dural sac repair is useful to prevent retethering of the cord.