• 대한임베디드공학회논문지
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• 제13권5호
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• pp.245-252
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• 2018

Non-volatile RAM devices have been increasingly viewed as an alternative of DRAM main memory system. However some technologies including phase-change memory (PCM) are still suffering from relatively poor write performance as well as limited endurance. In this paper, we introduce a proactive last-level cache management to efficiently hide a low write performance of non-volatile main memory systems. The proposed method significantly reduces the cache miss penalty by proactively evicting the part of cachelines when the non-volatile main memory system is in idle state. Our trace-driven simulation demonstrates 24% performance enhancement, compared with a conventional LRU cache management, on the average.

• 약학회지
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• 제34권4호
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• pp.252-261
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• 1990

Arachidonic acid which is precursor of prostaglandins, when administered ($100.0\;{\mu}g/kg$, or $100.0\;{\mu}g/kg/min$) intravenously, did not influence on renal function of dog. Arachidonic acid, when infused ($10.0\;{\mu}g/kg/min$) into a renal artery, produced marked diuretic action accompanied with augmentation of renal plasma flow and with little changed glomerular filtration rate, and exhibited the increased clearances of osmolar substance and free water, and the decreased reabsorption rates of sodium and potassium in renal tubules in only experimental kidney, but did not influenced at all in control kindey. The diuretic acition of arachidonic acid infused into a renal artery was not affected by pretreatment of indomethacin (10.0 mg/kg. i.v) which is inhibitor of cyclooxygenase. Above results suggest that arachidonic acid infused into a renal artery produced diuretic action through direct renal hemodynamic changes, that is mediated by reduction of postglomerular resistance being caused by dilation of vas efferense.

• Radiation Oncology Journal
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• 제2권2호
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• pp.245-252
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• 1984

The record of radiation therapy cases during a five year period at the University of Michigan Hospitals has been analyzed. Of a total of 73 adenocarcinoma of prostate, the majority belonged to Stage B and C which represented 49 and 20 cases, respectively. The mortality rate after irradiation was clearly related to the tumor stage. Local irradiation resulted in $88\%$ of the local control of well·differentiated adenocarcinomas. Stage C cases had $50\%$ mortality, whereas that of Stage B patients was $14\%$. Results of this study are in general agreement with previous data in terms of the local disease control after irradiation and provide a basis for conservative radiotherapy regimen as an approach in the treatment of localized prostatic carcinomas.

• 한국결정성장학회지
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• 제15권4호
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• pp.141-144
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• 2005

[ $(Y_{0.5}Sm_{0.25}Nd_{0.25})Ba_2Cu_3O_y$ ] [(YSN)-123] high $T_c$ composite superconductors with $CeO_2$ addition were systematically investigated by top seeded melt growth (TSMG) process in air atmosphere. A melt textured $NdBa_2Cu_3O_y$ (Nd-123) single crystal was used as a seed for achieving the c-axis alignment large grains perpendicular to the surface of (YSN)-123 composite oxides. The size of $(Y_{0.5}Sm_{0.25}Nd_{0.25})_2BaCuO_5$ [(YSN)211] nonsuperconducting inclusions of the melt textured (YSN)-123 samples with $CeO_2$ addition were remarkably reduced and uniformly distributed within the (YSN)123 superconducting matrix except in the region very close to the Nd-123 seed crystal. The sample showed a sharp superconducting transition of 91 K.

• 한국초등과학교육학회지:초등과학교육
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• 제29권3호
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• pp.252-261
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• 2010

The purpose of this study is to devise a teaching and learning strategies of leadership for the gifted in science, to develop a leadership reinforcement program using the strategies, and to verify the effectiveness of the program. We designed teaching and learning strategies of leadership for the gifted in science as follows; to give a chance to exercise the essential elements of leadership life skills through science activities. The activities based on students' interest should stimulate reflective thinking and cooperation with each other. We found out that the teaching and learning program for leadership improvement for the gifted in science was effective, especially group management skill, communication skill, decision-making skill, human relations skill, and self-understanding skill.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2017년도 춘계 종합학술대회 논문집
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• pp.251-252
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• 2017

핵 가족화, 고령화가 가속화되고 도시 독거노인 및 독신인구가 급증합에 따라, 외로움과 소외감을 극복하고 또 다른 형태의 가족적 유대감을 얻기 위하여 반려동물, 반려인들이 날로 증가하고 있다. 반려동물 문화는 급격히 발전하고 있는데 반해, 이를 지탱할 수 있는 사회나 문화적 의식과 공공 기반시설의 질적수준은 초기 단계수준이다. 반려견 소유자와 일반인들 사이에 갈등이 발생하여 관련 제도나 법에 대해 논란이 되고 있다. 갈등과 논란을 해소하며 반려동물 문화 발전에 기여하고자 본 연구는 도시 내 반려인 전용 주거 시설의 개념과 역할, 공동 주거 시설로서의 사회적 필요성을 고찰하고, 새로운 공동 집합 주거 공간의 방향을 제안한다.

• 한국반도체및디스플레이장비학회:학술대회논문집
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• 한국반도체및디스플레이장비학회 2002년도 추계학술대회 발표 논문집
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• pp.130-136
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• 2002

Device makers want to make higher density chips as devices shrink, especially WSix poly stack down is one of the key issues. However, EPD (End Point Detection) time delay was happened in DPS+ poly chamber which is a barrier to achieve device shrink because EPD time delay killed test pattern and next generation device. To investigate the EPD time delay, a test was done with patterned wafers. This experimental was carried out combined with OES(Optical Emission Spectroscopy) and SEM (Scanning Electron Microscopy). OES was used to find corrected wavelength in WSix stack down gate etching. SEM was used to confirm WSix gate profile and gate oxide damage. Through the experiment, a new wavelength (252nm) line of plasma is selected for DPS+ chamber to call correct EPD in WSix stack down gate etching for current device and next generation device.

• Journal of information and communication convergence engineering
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• 제10권3호
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• pp.248-252
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• 2012

The sensor network standard DASH7 was proposed to improve transmission quality and low power communication. Specifications for the standard are currently being developed, so the security specification has not been firmly implemented. However, without a security specification, a network cannot work due to threats from malicious users. Thus we must ensure confidentiality and authentication of data packets by using a cryptography method. To contribute to the DASH7 security specification, this paper shows the implementation results of network and data link layer security by using advanced encryption standard (AES) counter with CBC-MAC (CCM) over CC430 sensor nodes.

• 한국가구학회지
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• 제19권4호
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• pp.252-259
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• 2008

High glossy painting and UV lithographic painting as painting methods for wooden furniture have played a positive role in enhancing the diversity of furniture design, which has been proved by the analysis on the relationship between the change in the diversity of design and painting methods of graduation projects (wooden furniture) presented by graduates of local universities, as a focus of this article. Since the development of new painting methods has the potential to develop aesthetic characteristics of wooden furniture, many design experiments are needed to improve decorative features of furniture, such as the application of high glossy painting and UV lithographic painting.

• Journal of Microbiology and Biotechnology
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• 제25권8호
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• pp.1324-1327
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• 2015

The nucleotide sequence of the TRP1 gene encoding phosphoribosyl anthranilate isomerase in yeast Saccharomycopsis fibuligera was determined by degenerate polymerase chain reaction and genome walking. Sequence analysis revealed the presence of an uninterrupted open-reading frame of 759 bp, including the stop codon, encoding a 252 amino acid residue. The deduced amino acid sequence of Trp1 in S. fibuligera was 43.5% homologous to that of Komagataella pastoris. The cloned TRP1 gene (SfTRP1) complemented the trp1 mutation in Saccharomyces cerevisiae, suggesting that it encodes a functional TRP1 in S. fibuligera. A new auxotrophic marker to engineer starch-degrading yeast S. fibuligera is now available. The GenBank Accession No. for SfTRP1 is KR078268.