• 대한수학회지
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• 제59권2호
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• pp.379-405
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• 2022

We introduce the notions of Koszul N-complex, Čech N-complex and telescope N-complex, explicit derived torsion and derived completion functors in the derived category D_N (R) of N-complexes using the Čech N-complex and the telescope N-complex. Moreover, we give an equivalence between the categories of cohomologically 𝖆-torsion N-complexes and cohomologically 𝖆-adic complete N-complexes, and prove that over a commutative Noetherian ring, via Koszul cohomology, via RHom cohomology (resp. ⊗ cohomology) and via local cohomology (resp. derived completion), all yield the same invariant.

• 문화기술의 융합
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• 제5권3호
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• pp.43-54
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• 2019

이 연구는 아파트 화재의 대형화를 막기 위해 소방공사감리원의 업무수행능력에 따른 완공검사결과와 소방공사감리원의 성능시험 공기확보의 필요성에 따른 완공검사결과 및 완공검사증명서 발급 후 소방시설 등의 하자 유무상태에 따른 요인을 분석하여 완공검사 결과를 측정하여 소방공사감리원의 업무수행능력을 향상시키 위한 것이다. 연구의 결과를 요약하면 첫째, 소방공사감리원의 업무수행능력에 따라 아파트 완공검사결과에 영향을 미치는 것으로 직업별로 소방공무원보다 소방시설설계업 및 소방공사감리업 종사자가 소방공사감리원의 업무수행능력에 따라 아파트 완공검사 결과 정도는 유의하게 높게 나타났다. 그러므로 아파트에는 아파트 공사감리 경력이 있는 사람을 감리원으로 배치하여 소방공사감리원의 업무수행능력을 향상시킬 필요가 있다. 둘째, 소방공사감리원의 성능시험 공기확보 필요성에 대한 완공검사 결과는 직업별로 소방공무원보다 소방시설설계업 및 소방공사감리업 종사자의 성능시험에 대한 공기확보 필요성이 유의하게 높은 것으로 분석 되었다. 이를 개선하기 위해 건축 준공일까지 완공검사를 할 수 있도록 하며 발주처에서는 완공검사증명서를 건축준공일에 임박하여 발급받도록 강요하지 않도록 장치를 마련할 필요가 있다. 마지막으로, 완공검사증명서 발급 후 완공검사의 하자가 완공검사 결과에 영향을 미치는 것으로 발주자(건축주. 감독관) 종사자보다 소방시설설계업 및 소방공사감리업체 종사자가 유의하게 낮게 분석되었다. 이는 소방시설공사를 마치지 않은 상황에서 발주처. 건설사가 완공검사증명서의 발급을 요구함에 따라 완공검사증명서 발급 후 소방시설 등에 하자가 발생하여 완공검사 결과에 영향을 미친 것으로 분석된다.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제11권1호
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• pp.23-27
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• 2004

We calculate dim $\hat{A}$ which is a completion of a Noetherian ring A with respect to I-adic topology. We do not use localization but power series techniques.

• 대한수학회지
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• 제42권2호
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• pp.291-304
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• 2005

We introduce a concept of Cauchy complete Csaszar frames and construct Cauchy completions of Csaszar frames using strict extensions of frames and show that the Cauchy completion gives rise to a coreflection in the categories CsFrm and UCsFrm.

• 통합자연과학논문집
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• 제10권4호
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• pp.240-244
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• 2017

We study the behavior of some invariants under completion. We also give a counterexample, which is the same as a counterexample to Ding's Conjecture, to Koh-Lee's Conjecture.

• 충청수학회지
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• 제22권3호
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• pp.439-450
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• 2009

In this note we give a connection between the truncated moment problem and the 2-variable subnormal completion problem.

• 한국통신학회논문지
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• 제29권5C호
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• pp.700-705
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• 2004

Autoencoder와 Fuzzy c-Means 알고리즘을 이용하여, 불완전한 데이터의 군집화를 위한 알고리즘이 본 논문에서 제안되었다. 본 논문에서 제안된 Optimal Completion Autoencoder Fuzzy c-Means (OCAEFCM)은 손상되어 불완전한 데이터의 최적 복원과 데이터의 군집화를 위해 Autoencoder Neural Network (AENN) 과 Gradient-based FCM (GBFCM)을 이용하였다. OCAEFCM 의 성능평가를 위해 IRIS 데이터와 금융기관에서 취득한 실제 데이터를 사용하였다 기존의 Optimal Completion Strategy FCM (OCSFCM)과 비교했을 때, 제안된 OCAEFCM 이 OCSFCM 보다 18％-20％의 성능 향상을 보여준다.

• 제어로봇시스템학회논문지
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• 제9권9호
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• pp.727-735
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• 2003

The determination of completion time constitutes an important step in developing algorithms for short-term production scheduling. Existing completion time algorithms of multi-product batch processes often assume that intermediate storage tanks are always available when it is needed. In this paper, we consider a serial multi-product batch plants with ZW and NIS policy intermediate storge tank. We limit storage residence time and allocated products in the intermediate storage tank to minimize the quality change of the stored material as well as to reduce the clearing time during product change. A set of recurrence relations is suggested to calculate the completion times for the given batch sequence of products on all processing units. Also analytic solution for the suggested model is solved by a graphical method. The effectiveness of these results is proved by a few illustrative examples.

• 대한수학회지
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• 제61권3호
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• pp.427-444
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• 2024

The matrix completion problem is to predict missing entries of a data matrix using the low-rank approximation of the observed entries. Typical approaches to matrix completion problem often rely on thresholding the singular values of the data matrix. However, these approaches have some limitations. In particular, a discontinuity is present near the thresholding value, and the thresholding value must be manually selected. To overcome these difficulties, we propose a shrinkage and thresholding function that smoothly thresholds the singular values to obtain more accurate and robust estimation of the data matrix. Furthermore, the proposed function is differentiable so that the thresholding values can be adaptively calculated during the iterations using Stein unbiased risk estimate. The experimental results demonstrate that the proposed algorithm yields a more accurate estimation with a faster execution than other matrix completion algorithms in image inpainting problems.

• Asian Pacific Journal of Cancer Prevention
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• 제13권10호
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• pp.5225-5228
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• 2012

Introduction : The objective of this study was to analyze the complication rates after completion thyroidectomy and compare them with primary total benign and malign thyroidectomy causes in total of 647 patients. Patients and Methods: Among 647 patients, there were 159 receiving completion thyroidectomy for differentiated thyroiud cancer (DTC) (Group 1); 217 patients receiving total thyroidectomy for DTC (Group 2) and 271 given total thyroidectomy for benign diseases (Group 3). Results: When groups were compared for complications, there were no significant difference except temporary hypocalcemia between completion thyroidectomy and total thyroidectomy for DTC. When the total thyroidectomies were compared (Group 2 and 3), there were no significant difference observed except unilateral temporary RLN palsy. Conclusion: With improvements in surgical technique and experience, complication rates of thyroidectomy performed for benign or malign diseases are reduced. In spite of the improvement in surgical experience, temporary RLN palsy and hypoparathyroidism are the main complications in completion thyroidectomies which need special attention. To evaluate the patients more carefully in preoperative period and performing adequate thyroidectomy appears more logical.