• Education of Primary School Mathematics
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• v.19 no.1
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• pp.31-45
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• 2016

In this study, the case of error became the object of learning, and the investigator applied these cases to an actual class and established three study problems in order to achieve the purpose of this study. The results of analysis of students' errors in figure based on before achievement test are shown as follows: First, the most errors occurred in the figure was the ones from deficient mastery of prerequisite concepts and definitions. Specially, the errors from deficient mastery of prerequisite concepts and definitions have the majority. it is very high ratio even if it considers an influence of an evaluation question item. so, I think it is necessary to teach concept related figure above all. Second, as the results of application 'finding errors' to a class, there is a meaningful difference in the mathematical achievement and reasoning ability within significance level 5%. This means 'finding errors' is one of the teaching method that it develops the mathematical achievement and reasoning ability.

• Cross-Cultural Studies
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• v.31
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• pp.65-94
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• 2013

San-he-ming-zhu-bao-jian-quan-zhuan(三合明珠寶劍全傳), this work is characterized as follows: First of all, San-he-ming-zhu- bao-jian-quan-zhuan's charaters appear equally, the readers feels familiar. this work is formed a universal consensus. Ordinary people must empathize about xia-yi(俠義) and retribution, this work was well represented. Because the readers would have liked to this story. It was an intimate relationship between China and the Joseon Dynasty(朝鮮) all the way, The Joseon Dynasty imported books and the products of civilization. High official, official interpreter, woman loves the classic Chinese novel. The classic Chinese novel was transcribed, published, translated into a book. San-he-ming-zhu-bao-jian-quan-zhuan were introduced in the Joseon Dynasty, Sungkyunkwan(成均館) University holds one version. This work is being compromised, many missing words. Domestic holdings are rare. San-he-ming-zhu-bao-jian-quan-zhuan is a novel of chivalry, the character are classified into the chivalry, negative hero, person of affection, fantastic figure. This work is centered around Majun(馬俊). Maluanying(馬鸞英) is the heroin, seen as the classic case of overcoming adversity. Quzhongcheng(屈忠成) is the prime minister, negative figure, he fight with the chivalry, was defeated at the end. Liuxu(柳絮) is person of affection, overcoming adversity, marries the two lady, has a heroic side. Fantastic figure is more enriching the contents of the work, is Buddhist and Taoist figure, serves as the positive and the negative role. San-he-ming-zhu-bao-jian-quan-zhuan is a similar assessment on Zheng-chunyuan(爭春園)'s character and plot, But Liuxu's love story is strengthened. Therefore, continued research is needed for this work.

• Journal of the Korean institute of surface engineering
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• v.55 no.6
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• pp.363-367
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• 2022

Transparent ZnO/Ti/ZnO (ZTZ) tri-layered films were prepared with radio frequency (RF) and direct current (DC) magnetron sputtering on the glass substrate. The thickness of the ZnO and Ti films was kept at 50 and 10 nm to consider the effect of the electron irradiation on the crystallization and optoelectrical properties of the films. From the XRD spectra, post-depostion electron irradiated films showed the characteristic peaks of ZnO(002) and Ti(200), respectively. the observed grain size of the ZnO(002) and Ti(200) enlarged up to 18.27 and 12.16 nm at an irradiation condition of 750 eV. In the figure of merit which means an optoelectrical performance of the films, as deposited films show a figure of merit of 2.0×10^-5 𝛺^-1, while the films electron irradiated at 750 eV show a higher figure of merit of 5.7×10^-5 𝛺^-1.

• Journal of English Language & Literature
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• v.55 no.6
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• pp.1103-1122
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• 2009

In this essay, I compare the ways in which the mid-thirteenth century English romance, Floris and Blancheflour, represents relationships of the Spanish pagan queen to her adoptive Christian daughter who becomes her daughter-in-law, with the ways in which Chaucer's Man of Law's Tale and other so-called Constance romances delineate relationships between mothers-in-law and daughters-in-law. What draws me into these romances is the fact that they both convey the intergenerational relationships of women. However, the texts become distinct from each other in the way in which each depicts women characters and their relationships with one another. In this paper, I argue that the level of intimacy that the mother-in-law figure has with the daughter-in-law figure plays a defining role in making the former perform her agency for or against the latter. In the Man of Law's Tale and other Constance romances, the daughter-in-law figure is in every sense an alien or 'outsider' to the mother-in-law figure. To the contrary, Blancheflour in Floris is a sort of 'insider' to the queen because they lived in the same household for fourteen years-ever since the girl's birth. The queen, therefore, should have a high degree of intimacy with Blancheflour. I argue that the pagan queen's intimacy to the daughter of a Christian-European captive has enabled the queen to protect the girl as her adoptive daughter first and as a daughter-in-law second, namely contributing to her unreserved endorsement of the inter-racial-religious-class union between her only son, Floris, and Blancheflour. This is one major factor that distinguishes the relationship of the queen and Blancheflour in Floris from the dysfunctional relationships of mothers-in-law and daughters-in-law in the late medieval Constance romances, where women of different generations are strangers to each other, and no way is imagined for women of different races and religions to get along with each other.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.647-664
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• 2022

This study explores the possibility that the figure of the Estill Voice Training model, which is based on speech science, can contribute to the expansion of vocal expertise in the acting art where an actor creates a character. The purpose of this study is to examine the usage plan. The training model through the fluidity and structural functionality of the voice production organ is differentiated from the existing voice training that focuses only on the results of sound due to its ambiguous abstraction. Developing the voluntary coordination ability of the occipital region and vocal tract, such as False Vocal Folds, Cricoid Cartilage, Velum, AES, and Anchoring, has scientific efficiency that makes it easier to produce artistic target sounds, and it is a technical skill that can creatively overcome the functional limitations faced by actors. It can be used as a methodology. The Estill model Figure, which is a principle training for harmony and coordination between the elements of voice production, has a practical value that can be used as an alternative training model for the voice education of actors in Korea, where images and abstractions are the mainstream.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.6
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• pp.149-154
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• 2022

Due to high power capabilities and high linearity of GaN devices, GaN Low-Noise Amplifiers (LNAs) without a limiter can be implemented in order to improve noise figure and reduce chip area in radar receivers. In this paper, a GaN LNA is presented for Ka-band radar receivers. The designed LNA was realized in a 150-nm GaN HEMT process and measurement results show that the voltage gain of >23 dB and the noise figure of <6.5 dB including packaging loss in the target frequency range. Under the high-power stress test, measured gain and noise figure of the GaN LNA is degraded after the first stress test, but no more degradation is observed under multiple stress tests. Through post-stress noise and s-parameter measurements, we verified that the GaN LNA is resilient to pulsed input power of ~40 dBm.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1991.06a
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• pp.1-30
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• 1991

The lubrication state between contacting bodies with rolling and sliding under loaded condition is generally understood by the conception shown in Figure 1. When the lubricating oil film formation between facing bodies is good enough to separate these bodies by the hydrodynamic pressure, this state is called by the expression of "hydrodynamic lubrication". The thickness of oil film is so large that the lubricating oil between facing bodies behaves as fluid and metal-to-metal contact between surface roughness asperities on facing bodies does not occur. When the oil film thickness becomes thinner or when the surface roughness height becomes larger, top of surface roughness asperities on facing bodies reaches very near to each other and there the oil or absorbed oil molecules on the surface of facing bodies behave no more as fluid. Partly metal-to-metal contact of surface roughness asperities occurs. Such lubrication state is called by the expression "mixed-lubrication". When the oil film thickness becomes more thinner or surface roughness height becomes larger, metal-tometal contact or contact via absorbed oil molecules dominate at most of the part in contact zone. Such state is called by the expression "boundary lubrication". Schematic representation of these three regimes of lubrication is shown in Figure 1.rication is shown in Figure 1.

• Fashion & Textile Research Journal
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• v.17 no.5
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• pp.691-703
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• 2015

Indeterminacy maintains that the simultaneous measurement of object location and speed is theoretically impossible. This study present indeterminacy as a theoretic tool to interpret a variety of expression characteristics that seem disorderly in recent fashion illustrations; in addition, it analyzes the characteristics and meaning of indeterminacy as expressed in fashion illustrations. This study reviews concepts and related theories on indeterminacy to examine characteristics of indeterminacy expressed in the arts and fashion; subsequently, indeterminacy characteristics found in fashion illustrations are analyzed. In expressing the fashion figure, indeterminacy finds expression in a distorted figure transformations that include a hybridized combination of heterogeneous forms that dismantle and reconstruct the human body. The hybridized body of combined machines, animals and plants indicates an indeterminate body endlessly transforming itself. Indeterminate space expression finds expression in space expression by projection with the overlapping and juxtaposition of irrelevant constituent elements as well as a space expression from the insertion of unexpected images. An unclarified inconclusive open space provides space with fluidity, causes space expansion and conveys inconclusive meaning. Indeterminate expressions found in fashion illustrations reveal the ambiguity and complexity of a post-modern society with polysemous aesthetic values and the expanded visual concepts of fashion illustrations.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2009.06a
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• pp.63-63
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• 2009

In this work, we demonstrate 800V 4H-SiC power DMOSFETs with several structural alterations to observe static DC characteristics, such as a threshold voltage ($V_{TH}$) and a figure of merit ($V_B^2/R_{SP,ON}$). To optimize the static DC characteristics, we consider four design parameters; (a) the doping concentration ($N_{CSL}$) of current spreading layer (CSL) beneath the p-base region, (b) the thickness of p-base ($t_{BASE}$), (c) the doping concentration ($N_J$) and width ($W_J$) of a JFET region, (d) the doping concentration ($N_{EPI}$) and thickness ($t_{EPI}$) of epi-layer. Design parameters are optimized using 2D numerical simulations and the 4H-SiC DMOSFET structure results in high figure of merit ($V_B^2/R_{SP,ON}$>~$340MW/cm^2$) for a power MOSFET in $V_B{\sim}1200V$ range.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.14 no.6
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• pp.499-504
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• 2001

We evaluated the degree of texture through depth of the superconductor core of Bi-Sr-Ca-Cu-O(BSCCO) superconductor tape. The degree of texture was characterized by pole figure analysis indicating that the degree of texture varied significantly with depth of the superconductor core. It was observed that the degree of texture was higher near the interface than inside the superconductor core. Specifically, as getting near to the center from the sheath/core interface, the orientation of BSCCO became dispersed from normal direction(ND) which, in turn, resulted in the degradation of <001>-fiber texture. In addition, the <001> texture was non-uniform an, better texture was developed along rolling direction(RD), compared to transverse direction(TD). Microstructural investigation showed that grain alignment was locally degraded by the existence of second phases. I was observed that larger grain size and better texturing were developed near the relatively straight interface compared to those inside the superconducting core. Based on our study, the region near the interface is thought to carry significant current compared to that inside the core.