• Journal of the Korean Wood Science and Technology
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• 제28권3호
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• pp.14-24
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• 2000

본 연구에서는 향후 공급량이 증가될 것으로 예상되는 라디아타소나무와 국산 낙엽송의 두 수종을 이용하여 합판을 제조하고 구조용 합판 및 콘크리트 거푸집용 합판으로서의 사용 가능성을 검토하고자 하였다. 먼저, 기초적인 재질을 평가하기 위하여 합판의 재질시험 및 못성능 등의 시험을 실시하였고, 콘크리트조 주택 혹은 목조주택 등의 구조용 재료로의 사용을 검토하기 위해 집중하중과 균일분포하중에 의한 구조성능 시험 및 콘크리트 거푸집용으로서의 성능시험을 실시하였다. 합판의 기초 재질에 해당되는 비중, 너비 굽음, 길이 굽음 비틀림에 대한 실험 결과, 구조용 재료로서의 기준을 만족하였다. 못 측면 저항력, 못 인발 저항력 그리고 못머리 관통력에 대한 실험 결과, 구조용 재료로서의 벽체나 지붕재에 대한 표준성능을 만족하였다. 이들 두 수종으로 제조한 합판의 경우, 집중하중과 균일 분포하중에 의한 구조성능 평가, 콘크리트 거푸집용으로서의 성능 평가 결과를 볼 때 구조용 덮개재, 바탕바닥 마감재, 콘크리트 거푸집용 재료로의 사용이 가능하다고 판단되었다.

• 한국정보과학회논문지:시스템및이론
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• 제26권1호
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• pp.9-23
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• 1999

병렬 그래프 감축 모델에 있어서 투기적 연산(speculative evaluation)모델은 병렬성을 증가시키지만 불필요한 연산으로 인해 자원을 낭비할 수 있다. 투기적 태스크가 람다 연산식을 WHNF(Weak Head Normal Form)로 감축할 때, 대치과정은 그래프를 증가시킬 수 있고, 많은 복사과정을 요구할 수 있다. 이러한 투기적 태스크는 나중에 불필요한 연산이 될 수있고 이 경우 이러한 투기적 태스크에서 발생한 다른 모든 투기적 태스크들을 종료해야 하는 부담이 있다. 또한 불필요하게 된 복사과정으로 인한 기억 공간을 재사용이 가능한 상태로 만들어 주어야 한다. 본 논문은 WHNF 또는 HNF 로 감축할 대 발생할수 있는 불필요한 대치과정으로 인한 오버헤드를 줄이기 위해 대치과정이 지연된 람다 연산식 형태 (DSF : Deferred Substitution Form)를 제안한다. 이 형태는 대치과정을 필수적 태스크(mandatory task)가 수행될 때 까지 지연시키기 위한 람다 연산식 형태이다. 대치과정이 지연된 람다 연산식 형태로의 감축을 수행하는 투기적 태스크에서 , 대치과정이 존재하지 않기 때문에 그래프의 크기가 증가하지 않고 또한 복사과정을 요구하지 않는다. 따라서 연산식에 대한 대치과정이 지연된 람다 연산식 형태로의 감축이 불필요하게 된 경우 부담이 줄어들게 된다. 아울러 병렬성을 증가시키기 위한 연산모델을 제안한다.

• Steel and Composite Structures
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• 제32권6호
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• pp.769-778
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• 2019

The specially prefabricated steel moment connections with pyramid head is one of the significant innovations in the steel structures forms to improve the installation time and simplify the construction procedure. The beams in this structure form are supported by two top and bottom angles and web double angles. Such a configuration despite its advantages increases the welding operation and filed installation time and costs. In this paper, the effect of using beams with channel and I section in three classes of seismically compact, seismically non-compact, and slender section according to width-to-thickness ratio on the behavior of the connection was investigated under monotonic and cyclic loading. Modeling was performed by ABAQUS and verified by the results of an experimental specimen. The findings indicated that using I and channel section instead of angle section reduces the amount of welding materials as well as easing the installation procedure. However, it has no significant effect on the ultimate strength and ductility of the connection. Furthermore, if the beam section is seismically compact, this form is considered as a special moment frame that has a rotation capacity up to 0.04 radians without any reduction in connection moment resistance.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.1181-1188
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• 2021

This research aims to analyze transglobal leadership which has an impact on bank sustainability with militancy and organizational culture variables as mediating variables. In addition, to evaluate militancy, cultural organizations exist to encourage bank sustainability. This is an explanatory research conducted using a quantitative approach in the form of a survey. The population of this study includes all Heads of Regional Offices and Head of Branch Offices of PT. Bank Rakyat Indonesia is spread across Sumatra, Java, Kalimantan, Sulawesi, Bali and Jayapura. This study uses a research instrument in the form of a questionnaire that has been tested for validity and reliability and secondary data. Quantitative data analysis was performed in the form of Structural Equation Modeling (SEM) analysis based on Partial Least Square (PLS) to answer the research hypothesis. The results show a significant and positive relationship between transglobal and militancy leadership, transglobal leadership with innovation culture, militancy with innovation culture, militancy with bank sustainability and innovation culture with bank sustainability. The novelty of this research lies in the use of militancy and innovation culture as intervening variables in the correlation between transglobal leadership and bank sustainability. The militancy variable is the new variable to be checked.

• 정보저장시스템학회논문집
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• 제2권3호
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• pp.208-213
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• 2006

The present state of the design of swing arm actuators for optical disc drives is to obtain the high efficient dynamic characteristics within a very compact volume. As a necessary consequence, the need of the small form factor (SFF) storage device has been arisen as major interests in the information storage technology. In this paper, we suggest the miniaturized swing arm type actuator that has high efficient dynamic characteristics for SFF optical disk drive (ODD). For the operating mechanism, it uses a tracking electromagnetic (EM) circuit for a focusing motion together. Moreover, due to the size constraint, the thermal stability of optical head is important. Therefore, the actuator is designed to emit the heat, which is generated by optical pick-up, along the actuator body easily. Initial model is designed based on the topology optimization method considering the thermal conductivity. Then, the structural parts of the actuator are modified to maintain the high sensitivity and to have wide control bandwidth by the design of experiments method (DOE) and new concept of decreasing mass and inertia. Finally, a swing arm type actuator for SFF ODD is suggested and its dynamic characteristics are verified.

• 한국지진공학회논문집
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• 제1권2호
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• pp.31-37
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• 1997

삼국시대 이후 근대까지 민가의 가장 보편적인 형태였던 초가삼가의 평균적인 상세 구조를 제시하였다. 목조 프레임이 주로 사용되었으며 프레임의 조인트는 사개맞춤이 일반적이었다. 초가삼간을 구성하는 평주 및 고주 프레임의 정적 수평내력을 1:1 실험모델을 통하여 평가하였다. 기둥 상부 조인트의 형태 및 심벽이 수평내력에 미치는 영향과 조인트의 파괴모드를 분석하였다. 실험결과 평주 프레임의 극한 수평내력은 1,090N, 파괴시 최대 수평변위는 400mm(1/6 rad)이었다. 고주 프레임의 경우 이들 값은 각각 4,160 N 및 250 mm(1/9.6 rad)이었다. 프레임의 거동은 모두 조인트의 거동에 지배되었으며 매우 큰 비선형을 보였다. 조인트의 파괴모드는 평주 프레임의 경우 화통가지의 전단파괴, 고주프레임의 경우 화통가지의 휨파괴가 주요한 모드였다.

• 패션비즈니스
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• 제11권4호
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• pp.204-220
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• 2007

The background of Korean Ethnical Costume was originated from those northern mounted nomadic groups, which was Scythe style Costume Culture. Through the antique records and paintings of tombs bequests hereby describe the forms of Scythian Cotume (1) Headgear : There was Conical Cap(or Pointed Cap), Feathered Cap, and Crown. (2) Clothes : Both Men and Women wore Jacket as upper garment with leftsided collars, narrow sleeves to the length of the hip line. As lower garment, they wore the tight Trousers and Kungo(:窮袴)that was attached with gusset. (3) Belts and Boots : On the upper garment bound the leather Belts that was hanged a hook that was shaped of animal form at the end. Scythian Buckles was divided into six groups, animal-shaped, animal's head shaped, animal fight-shaped, rectangle-shaped, rectangle openwork-shaped, genre scene shaped Buckle. To the Boots, they wore leather boots. (4) Ornaments : Ornaments divided into Dress Trimming(:Gold plaques), Earrings, Necklaces(;Torques), Bracelets, Rings. Scythian Gold Plaques were divided into several types according to the shape, animal style(curved beast shape, profile shape, head reversed over its back shape), round shape, quadrilateral form, star shape, flower shape, crescent shape, bundle shape, human appearance. Earrings consisted of a plain ring and pendant ring was a middle ornament hung from it to a pendants which hung was made of heart shaped leaves of the tree, beads-linked. Scythian Torques were divided into several types according to the shape, Torque with Terminal style, Spiral style, Layers style, Crescent-shaped pectoral style, Crown style. Scythian Bracelet were divided into 4 styles according to the shape, Bracelets with ends shaped like beasts style, Spiral style, Layers style, Crown with openwork style. Rings were rhomb-shaped and animal shaped styleRings (5) Animal motifs used in Scythian ornaments appears that in some cases the work was intended to be purely ornamental, while many times the motifs had symbolic meaning (such as the successful dominance of the aggressor over the victim portrayed in the attack scenes). Magical use of symbols may have been inten-ded to guarantee the power of the aggressor.

• International Journal of Naval Architecture and Ocean Engineering
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• 제9권6호
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• pp.641-654
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• 2017

The KVLCC2 and its modified hull form were investigated in regular head waves using Unsteady Reynolds Averaged Navier-Stokes (URANS) methods. The modified KVLCC2 (named KWP-bow KVLCC2) is designed for reducing wave reflection from the bow. Firstly, the original KVLCC2 is studied for verification of the present code and methodology and the computed time history of total resistance and 2DOF motions (heave and pitch) for the selected two wave length conditions are directly compared with the results obtained from KRISO towing tank experiment under the identical condition. The predicted added resistance, heave and pitch motion RAOs show relatively good agreement with the experimental results. Secondly, the comparison of performance in waves between KVLCC2 and KWP-bow KVLCC2 is carried out. We confirmed that newly designed hull form shows better performances in all the range of wave length conditions through both the computation and the experiment. The present URANS method can capture the difference of performance in waves of the two hull forms without any special treatment for short wave length conditions. It can be identified that KWP-bow KVLCC2 gives about 8% of energy saving in sea state 5 condition.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제35권1호
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• pp.1-6
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• 2009

DNA double-strand breaks (DSBs) occur commonly in the all living and in cycling cells. They constitute one of the most severe form of DNA damage, because they affect both strand of DNA. DSBs result in cell death or a genetic alterations including deletion, loss of heterozygosity, translocation, and chromosome loss. DSBs arise from endogenous sources like metabolic products and reactive oxygen, and also exogenous factors like ionizing radiation. Defective DNA DSBs can lead to toxicity and large scale sequence rearrangement that can cause cancer and promote premature aging. There are two major pathways for their repair: homologous recombination(HR) and non-homologous end-joining(NHEJ). The HR pathway is a known "error-free" repair mechanism, in which a homologous sister chromatid serves as a template. NHEJ, on the other hand, is a "error-prone" pathway, in which the two termini of the broken DNA molecule are used to form compatible ends that are directly ligated. This review aims to provide a fundamental understanding of how HR and NHEJ pathways operate, cause genome instability, and what kind of genes during the pathways are associated with head and neck cancer.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2003년도 추계학술발표회
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• pp.574-578
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• 2003

There are so many methods to estimate the groundwater recharge. These methods can be categorized into four groups. First groupis related to the water balance analysis, second group is concerned with baseflow/springflow recession, and third group is interested in some types of tracers; environmental tracers and/or temperature profile. The limitation of these types of methods is that the estimated results of recharge are presented in the form of an average over some time period. Forth group has a little different approach. They use the time series data of hydraulic head and specific yield evaluated from field test, and the results of estimation are described in the sequential form. But their approach has a serious problem. The estimated results in forth typeof methods are generally underestimated because they cannot consider the discharge phase of water table fluctuation coupled with the recharge phase. Ketchum el. at. (2000) proposed calibrated method, considering recharge- and discharge-coupled water table fluctuation. But the dischargeis considered just as the areal average with discharge rate. On the other hand, there are many methods to estimate the source wavelet with observed data set in geophysics/signal processing and geophysical methods are rarely applied to the estimation of groundwater recharge. The purpose this study is the evaluation of the applicability of one of the geophysical method in the estimation of sequential recharge rate. The applied geophysical method is called minimum entropy deconvolution (MED). For this purpose, numerical modeling with linearized Boussinesq equation was applied. Using the synthesized hydraulic head through the numerical modeling, the relative sequenceof recharge is calculated inversely. Estimated results are very concordant with the applied recharge sequence. Cross-correlations between applied recharge sequence and the estimated results are above 0.985 in all study cases. Through the numerical test, the availability of MED in the estimation of the recharge sequence to groundwater was investigated