• Title/Summary/Keyword: Repair of defect

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Cost-Driven Optimization of Defect-Avoidant Logic Mapping Strategies for Nanowire Reconfigurable Crossbar Architecture (Nanowire Reconfigurable Crossbar 구조를 위한 결함 회피형 로직 재할당 방식의 분석과 총 비용에 따른 최적화 방안)

  • Lee, Jong-Seok;Choi, Min-Su
    • Journal of KIISE:Computer Systems and Theory
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    • v.37 no.5
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    • pp.257-271
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    • 2010
  • As the end of photolithographic integration era is approaching fast, numerous nanoscale devices and systems based on novel nanoscale materials and assembly techniques are recently emerging. Notably, various reconfigurable architectures with considerable promise have been proposed based on nanowire crossbar structure as the primitive building block. Unfortunately, high-density sys-tems consisting of nanometer-scale elements are likely to have numerous physical imperfections and variations. Therefore, defect-tolerance is considered as one of the most exigent challenges in nanowire crossbar systems. In this work, three different defect-avoidant logic mapping algorithms to circumvent defective crosspoints in nanowire reconfigurable crossbar systems are evaluated in terms of various performance metrics. Then, a novel method to find the most cost-effective repair solution is demonstrated by considering all major repair parameters and quantitatively estimating the performance and cost-effectiveness of each algorithm. Extensive parametric simulation results are reported to compare overall repair costs of the repair algorithms under consideration and to validate the cost-driven repair optimization technique.

Usefulness of End-to-Side Bridging Anastomosis of Sural Nerve to Tibial Nerve : An Experimental Research

  • Civi, Soner;Durdag, Emre;Aytar, Murat Hamit;Kardes, Ozgur;Kaymaz, Figen;Aykol, Sukru
    • Journal of Korean Neurosurgical Society
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    • v.60 no.4
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    • pp.417-423
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    • 2017
  • Objective : Repair of sensorial nerve defect is an important issue on peripheric nerve surgery. The aim of the present study was to determine the effects of sensory-motor nerve bridging on the denervated dermatomal area, in rats with sensory nerve defects, using a neural cell adhesion molecule (NCAM). Methods : We compared the efficacy of end-to-side (ETS) coaptation of the tibial nerve for sural nerve defect repair, in 32 Sprague-Dawley rats. Rats were assigned to 1 of 4 groups : group A was the sham operated group, group B rats had sural nerves sectioned and buried in neighboring muscles, group C experienced nerve sectioning and end-to-end (ETE) anastomosis, and group D had sural nerves sectioned and ETS anastomosis was performed using atibial nerve bridge. Neurological evaluation included the skin pinch test and histological evaluation was performed by assessing NCAM expression in nerve terminals. Results : Rats in the denervated group yielded negative results for the skin pinch tests, while animals in the surgical intervention groups (group C and D) demonstrated positive results. As predicted, there were no positively stained skin specimens in the denervated group (group B); however, the surgery groups demonstrated significant staining. NCAM expression was also significantly higher in the surgery groups. However, the mean NCAM values were not significantly different between group C and group D. Conclusion : Previous research indicates that ETE nerve repair is the gold standard for peripheral nerve defect repair. However, ETS repair is an effective alternative method in cases of sensorial nerve defect when ETE repair is not possible.

A Study on use state of Defect Deposite based on Actual use data - focused on 3 years after moving in apartment complex - (실적자료에 기초한 공동주택 하자보수보증금 사용실태 분석연구 - 3년차 단지를 중심으로 -)

  • Seo, Deok-Seok;Choi, Jung-Hyun;Kim, Ok-Kyue;Park, Kang-Woo;Cho, Jae-Hun;Park, Jun-Mo;Kim, Kwang-Hee
    • Journal of the Korea Institute of Building Construction
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    • v.10 no.2
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    • pp.81-88
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    • 2010
  • Under the law of Management of Apartment Complexes, the Apartment Supplier should satisfy the demands of residents for the repair of defects found in Apartment Housing. But in the cost of defect repair, the expense of resident complaints is not included, and only the actual defect repair expense is counted. So in this study, the actual use state of defect deposits for 3 years after moving in is analyzed based on the actual use data of 39 apartment complexes. The study shows that more than 50% of defect repair deposits are spent to satisfy expenses arising from complaints by residents. This is not only caused by irrational demands of residents, but also by the adoption of a stopgap policy by Apartment Suppliers.

Repair of Recurrent Pectus Excavatum with a Huge Chest Wall Defect in a Patient with a Previous Ravitch and Pectus Bar Repair: A Case Report

  • Rim, Gongmin;Park, Hyung Joo
    • Journal of Chest Surgery
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    • v.55 no.3
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    • pp.246-249
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    • 2022
  • Recurrent pectus excavatum (PE) after a Ravitch operation is not uncommon. Extensive costal cartilage resection from the previous Ravitch procedure can lead to an irregular, unstable chest wall depressions with a varying degree of deformity. The optimal approach to cover the chest wall defect and remodel the deformity, remains unknown. We report the case of a 27-year-old woman seeking surgery for the third time for recurrent PE. The patient presented with 2-time recurrent pectus excavatum following a failed Ravitch procedure and subsequent pectus bar repair. The entire chest wall reconstruction and remodeling entailed covering the chest wall defect with 2 titanium plates across both sides of the rib cage, and lifting and fixing the depressed chest wall with 2 parallel pectus bars.

Prediction Model Development of Defect Repair Cost for Apartment House according to Performance Data (실적 자료에 의한 공동주택 하자보수비용 예측모형 개발 방안)

  • Kim, Byung-Ok;Je, Yeong-Deuk;Song, Ho-San;Lee, Sang-Beom
    • Journal of the Korea Institute of Building Construction
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    • v.11 no.5
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    • pp.459-467
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    • 2011
  • The work of constructing apartment housing involves various fields of industry that are linked to each other, and is based on a design document prepared by multiple technicians and architects. Consequently, design errors, material flaws or faulty construction works can cause defects, which sometimes overlap with each other. Construction companies should repair any defects found in a completed building within a specified period of time, and to do this, should establish a business plan by efficiently predicting the cost of defect repair. As it is very difficult for companies to accurately predict the occurrence of defects, historical performance data is used as a base. For domestic apartment housing units, data on the cost of defect repair is insufficient, so there are hardly any methods that can be used to make precise predictions. Therefore, the intent of this study is to develop a model that can predict the cost of defect repair by supply type and area, based on historical performance data with ten years worth of post-completion.

Surgical Repair of Interruption of the Aortic Arch[Type A] -A Report of 5 Cases- (대동맥 결손증 (Type A) 의 외과적 치험)

  • 조범구
    • Journal of Chest Surgery
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    • v.21 no.4
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    • pp.665-671
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    • 1988
  • Between 1981 and 1987, five patients with an interruption of the aortic arch were operated upon. All had a ventricular septal defect and a patent ductus arteriosus as associated anomalies. A two-stage procedure was employed in these cases, the initial procedure being repair of the interrupted arch, ligation of the patent ductus arteriosus, banding of the main pulmonary artery and a lung biopsy which was followed, 5 to 49 months later, by the repair of the ventricular septal defect. Four patients completed the two-stage procedure with one postoperative mortality. The remaining patient is yet to complete the second stage procedure.

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One Stage Repair of Traumatic Ventricular Septal Defect and Mitral Regurgitation (외상성 심실중격결손 및 승모판막 역류증의 일차 완전정복)

  • 이재원;송태승;제형곤;송명근
    • Journal of Chest Surgery
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    • v.32 no.12
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    • pp.1131-1134
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    • 1999
  • After a penetrating thoracic injury early detection of intracardiac injury and early surgical repair when indicated are essential. A case presenting severe respiratory distress two weeks after a penetrating thoracic injury is reported. Transesophageal echocardiography showed massive pericardial effusion ventricular septal defect and mirtal regurgitation, The infundibular ventricular septal perforation was repaired using a Dacron patch the anterior mitral leaflet by interrupted sutures and the ruptured chordae of the posterior leaflet by a new chordae formation.

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An Analysis of Defect Dispute about Inter-Layer Crack Repair Method on Apartment Houses (공동주택 층간 이음부 균열 보수공법에 대한 하자분쟁 분석)

  • Lee, Tae-Hyeong;Jeong, Yong-Ki;Choi, Byung-Ju;Kim, Ok-kyu
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.05a
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    • pp.146-147
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    • 2017
  • Recently, as the living standards of residents in apartment houses continued to improve, the dispute of post management have also increased. one of the Issue, Concrete Cracks comprised high percentage of dispute. Especially, between criteria the cost of repairing defect and the judgement of defect isn't clear, they are a lot of dispute in this regard. Even though lots of the criteria about Inter-layer crack is existed by judging defects, In a court, they are judging their own criteria about Inter-layer crack. The purpose of this study is to compare and analyze Defect Judement Standard both MOLIT and Court, and to provide the Improvement for Defect Judgement and Repair Method of Inter-layer concrete crack.

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A Study on the Term of Warranty Liability by the Law-suit Requesting of the Guarantee against Defects in the Apartment Building (공동주택 하자보증금 청구소송에 의한 하자담보책임기간 연구)

  • Koo, Hae-Shik
    • KIEAE Journal
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    • v.12 no.3
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    • pp.11-18
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    • 2012
  • The purpose of this study is to contribute to solution of the defect dispute in apartment house in advance. We want to propose the improved devices in defect problems by investigating the money that exacted from the practical business of the inspection company and the money that a judge gave a decision in a civil court in 50 cases of the lawsuit to requesting the guarantee against defects and the improved schemes of the applied rate by analyzing the diagnosis money of each applied years about the term of warranty liability in 40 cases of the lawsuit separately from that. As the result, we have to reflect the defect of non construction and error construction on apartment building defects, which recognizes very important factor when we compute the defect repair warranty money and it needs to be rearranged the applied ratio in guarantee peried of housing law practically.

Failure Risk Assessment of Reinforced Concrete Sewer Pipes on Joint-Related Defects (원심력철근콘크리트관의 결함에 따른 심각도 평가 -이음부 사례를 중심으로-)

  • Han, Sangjong;Shin, Hyunjun;Hwang, Hwankook
    • Journal of Korean Society of Water and Wastewater
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    • v.27 no.6
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    • pp.787-796
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    • 2013
  • Sewer joint-related defect is one of the most common domestic sewer defects along with the lateral pipe problem. However, there are currently no criteria that precisely assess the joint-related sewer defects. Therefore, this study examined the joint-related sewer defects found in domestic circumstances, classified them according to the suggested defect code, and presented the examples of defect pictures. Each defect code was organized as the process of out of pipeline alignment (OPA) which shows the progress in deterioration. Each defect was classified into 5 grades depending on appropriate repair and rehabilitation method. The result of this study is expected to be useful for domestic CCTV inspectors to assess the sewer condition and helpful for managers to make a decision of repair and rehabilitation.