• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권1호
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• pp.319-333
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• 2022

In order to enhance system energy efficiency, bidirectional link resource allocation strategy in GFDM-based multiuser SWIPT systems is proposed. In the downlink channel, each SWIPT user applies power splitting (PS) receiver structure in information decoding (ID) and non-linear energy harvesting (EH). In the uplink channel, information transmission power is originated from the harvested energy. An optimization problem is constructed to maximize weighted sum ID achievable rates in the downlink and uplink channels via bidirectional link power allocation as well as subcarriers and subsymbols scheduling. To solve this non-convex optimization problem, Lagrange duality method, sub-gradient-based method and greedy algorithm are adopted respectively. Simulation results show that the proposed strategy is superior to the fixed subcarrier scheme regardless of the weighting coefficients. It is superior to the heuristic algorithm in larger weighting coefficients scenario.

• 경영과학
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• 제11권3호
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• pp.1-11
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• 1994

Recent advances in linear programming solution methodology have focused on interior point methods. This powerful new class of methods achieves significant reductions in computer time for large linear programs and solves problems significantly larger than previously possible. These methods can be examined from points of Fiacco and McCormick's barrier method, Lagrangian duality, Newton's method, and others. This study presents a primal-dual log barrier algorithm of interior point methods for linear programming. The primal-dual log barrier method is currently the most efficient and successful variant of interior point methods. This paper also addresses a Cholesky factorization method of symmetric positive definite matrices arising in interior point methods. A special structure of the matrices, called supernode, is exploited to use computational techniques such as direct addressing and loop-unrolling. Two dense matrix handling techniques are also presented to handle dense columns of the original matrix A. The two techniques may minimize storage requirement for factor matrix L and a smaller number of arithmetic operations in the matrix L computation.

• 한국가정과학회지
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• 제4권2호
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• pp.123-140
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• 2001

The purpose of this study is to find the suitable suit design of mid-aged men by examining visual effects in Physical and Psychological side aspects. I used convenience sampling by considering sex and age distribution. These methods were used to analyze data that were frequency analysis, variate analysis, centesimal scale, primary factor analysis, three primary variate analysis, duality variate analysis, equation variate analysis and Cronbach's multiplex range verification 1. Image perception of men's suit was analyzed with arrangement, numbers of button, pattern and the shape of one's body and was divided into charming, youthfulness, modernism. affection and manly. 2. 1) There are partly resemblance difference in physical visual effect by the shape of body and suit design. 2) There are partly resemblance differences in psychological visual effect by one's shape and suit design. In conclusion arrangement, number of button and Pattern are very important to give an effect on whole visual effect man's suit. Also, these were felt differently in each types of body Therefore it is confirmed that the type of body is important fluent to make people perceive.

• 한국게임학회 논문지
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• 제13권2호
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• pp.5-16
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• 2013

본고는 디지털 게임을 플레이할 때 발생하는 시간의 여러 층위와 그 구조적 특성을 통해 모순적으로 보이는 게임 플레이의 시간성이 서로 결합하는 양상과 그 결과로 만들어내는 리듬을 규명하는 것을 목적으로 한다. 디지털 게임 플레이는 첫째, 연대기적으로 흐르는 불가역적 시간의 지배 속에서 언제든 시간을 정지시키고 변화시킬 수 있는 가역성을 동시에 추구한다. 둘째, 이런 이중적인 시간 체계가 공존할 수 있는 이유는 게임의 시간에 플레이어가 개입하기 때문이다. 마지막으로 이렇게 복잡해 보이는 다층적 시간 체계는 이미 진행되었던 게임 플레이를 다시 한 번 반복하는 식의 리플레이라는 특수한 게임 플레이 활동을 통해 리듬을 만들어낸다.

• Molecules and Cells
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• 제43권2호
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• pp.176-181
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• 2020

The RUNX transcription factors serve as master regulators of development and are frequently dysregulated in human cancers. Among the three family members, RUNX3 is the least studied, and has long been considered to be a tumor-suppressor gene in human cancers. This idea is mainly based on the observation that RUNX3 is inactivated by genetic/epigenetic alterations or protein mislocalization during the initiation of tumorigenesis. Recently, this paradigm has been challenged, as several lines of evidence have shown that RUNX3 is upregulated over the course of tumor development. Resolving this paradox and understanding how a single gene can exhibit both oncogenic and tumor-suppressive properties is essential for successful drug targeting of RUNX. We propose a simple explanation for the duality of RUNX3: p53 status. In this model, p53 deficiency causes RUNX3 to become an oncogene, resulting in aberrant upregulation of MYC.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전기물성,응용부문
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• pp.170-173
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• 2003

The driving method is one of the most important factors of PDP, so various driving methods have been developed to improve the duality of PDP Nowadays, most of PDPs apply to ADS (Address and Display period Separated) driving method. In this paper, a new driving method that divides scan lines into multi-Blocks is suggested. The proposed driving method in this paper can drive 14 sub-fields per 1 TV field in SD panel, 16 sub-fields per 1 TV field in HD panel. And sufficient Address margin can be obtained.

• 기술사
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• 제34권4호
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• pp.74-77
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• 2001

최근에는 공조기를 비롯한 다양한 제품에서 해외 판매가 급속히 늘고 있다. 과거 협소한 내수시장에서의 경쟁에서 벗어나 전 세계의 고객을 대상으로 많은 제품을 판매할 수도 있지만 그만큼 힘겨운 경쟁자도 많다. 다년간 다양한 나라에 수출해 온 경험을 갖고 현지화가 되어 있는 선진 메이커와 판매경쟁을 하고 품질 클레임을 최소한으로 줄이려면 특히 엔지니어가 갖기 쉬운 제품 성능만 만족하면 된다는 편협한 사고에서 벗어나 시장의 특성에 적합하며 다양한 사용자의 요구를 만족하고 수출 대상국에서 법으로 정한 여러 가지 규격을 사전에 심도 있게 검토하여 대응하는 설계 체제가 구축되어 있어야 한다.

• Journal of applied mathematics & informatics
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• 제14권1_2호
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• pp.397-403
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• 2004

Cutler showed some duality results about Hausdorff and packing dimensions of a measure on a compact set in Euclidean space if its s-dimensional Hausdorff measure or packing measure is positive. We show that the similar results in a perturbed Cantor set hold according to its quasi s-dimensional Hausdorff measure or packing measure and we find concrete measures in this case while Cutler showed the existence of such measures. Finally under some strong condition, we give a concrete measure whose Hausdorff and packing dimensions are the same as those of the perturbed Cantor set without the condition that it has positive s-dimensional Hausdorff or packing measures.

• 대한수학회보
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• 제48권1호
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• pp.17-21
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• 2011

Let A be a co-Poisson Hopf algebra with Poisson co-bracket $\delta$. Here it is shown that the Hopf dual $A^{\circ}$ is a Poisson Hopf algebra with Poisson bracket {f, g}(x) = < $\delta(x)$, $f\;{\otimes}\;g$ > for any f, g $\in$ $A^{\circ}$ and x $\in$ A if A is an almost normalizing extension over the ground field. Moreover we get, as a corollary, the fact that the Hopf dual of the universal enveloping algebra U(g) for a finite dimensional Lie bialgebra g is a Poisson Hopf algebra.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2005년도 추계 학술논문 발표대회
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• pp.33-38
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• 2005

It is applied in the high quality equipment construction by introduction of this high duality treating technology (ozone treating, activated carbon treating, high quality oxidation treating, UV treating etc.)waterproofing or corrosion proof method caused secondary economy damage of operation discontinuance and high quality treating equipment for applying existent waterproofing method that corrosion proof ability (ozone resistance performance, chemical resistance etc.) and abrasion resistance performance by comprehension insufficiency of user and designer. Therefor, In this study, we will analyze problem of waterproofing and corrosion material of existing construction application by high quality treating, and measure physical performance change by various condition. It is required to waterproofing and corrosion system and application of the field valuation.