• Imaging Science in Dentistry
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• 제46권1호
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• pp.33-38
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• 2016

Purpose: Facial asymmetry has been measured by the severity of deviation of the menton (Me) on posteroanterior (PA) cephalograms and three-dimensional (3D) computed tomography (CT). This study aimed to compare PA cephalograms and 3D CT regarding the severity of Me deviation and the direction of the Me. Materials and Methods: PA cephalograms and 3D CT images of 35 patients who underwent orthognathic surgery (19 males and 16 females, with an average age of $22.1{\pm}3.3years$) were retrospectively reviewed in this study. By measuring the distance and direction of the Me from the midfacial reference line and the midsagittal plane in the cephalograms and 3D CT, respectively, the x-coordinates ($x_1$ and $x_2$) of the Me were obtained in each image. The difference between the x-coordinates was calculated and statistical analysis was performed to compare the severity of Me deviation and the direction of the Me in the two imaging modalities. Results: A statistically significant difference in the severity of Me deviation was found between the two imaging modalities (${\Delta}x=2.45{\pm}2.03mm$, p<0.05) using the one-sample t-test. Statistically significant agreement was observed in the presence of deviation (k=0.64, p<0.05) and in the severity of Me deviation (k=0.27, p<0.05). A difference in the direction of the Me was detected in three patients (8.6%). The severity of the Me deviation was found to vary according to the imaging modality in 16 patients (45.7%). Conclusion: The measurement of Me deviation may be different between PA cephalograms and 3D CT in some patients.

• 복식
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• 제54권1호
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• pp.109-123
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• 2004

In this study, the fashion trend after the 1990s and the characteristics of fashion in the postmodernistic viewpoint that mainly effected fashion were observed, and the characteristics of fashion illustration expression was observed in the viewpoint of its link. It can be seen that mutually close characteristics are mutually linked. As the result of this study, the characteristics of fashion illustration can be categorized into three areas. and the sub-concepts are as following. The first category is the pursuit of feminine beauty of individual multi-dimension. This includes- 1) retro feminine beauty; 2) fetishistic and ecstatic feminine beauty; 3) mixed composition genderless (mixed composition style. ageless style and raceless style): and 4) beauty of body deconstruction and reconstruction (deformation due to partial transformation, change into animalization, mechanization and spirituelization. and beautification of crudeness). The second is the intentional deviation of expression and production technique. This includes-1) deviation from traditional perspective; 2) deviation from composition concept: and 3) breaking away from the existing material and expression technique of material. The third is the pursuit of authority-rejection form of expression. This is an area that should be noticed in the fashion illustration expression of the 1990s, as it shows the most diverse phenomenon. The sub-concepts of this category include- 1) separation of art 2) minimalism (minimalism in structure and production method); 3) flatness; 4) completion of incompletion; 5) accidentalism; 6) sportive;7) absence of figure; 8) intentional childishness 9) story development; 10) techno mechanism and cyber character; and 11) animation style.

• 한국해안·해양공학회논문집
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• 제28권6호
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• pp.383-396
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• 2016

본 연구에서는 파랑과 흐름이 공존하는 해역에서 수위변화 및 흐름효과 고려 유무에 대하여 파랑모델을 수행하여 그 결과를 비교하였다. 해수유동장은 RIAMOM 모델 결과를 적용하였으며 파랑모델은 SWAN모델을 적용하였다. 바람자료는 ECMWF, NCEP 및 JMA의 3가지에 대하여 관측자료를 비교적 잘 재현하는 JMA 자료를 적용하였다. 수치모의는 2016년 1월~8월까지 8개월간 수행하였으며, 각 경우에 대하여 관측자료와의 비교를 위하여 2.5 m이상의 고파랑 기간에 대해 파고변화를 검토하였다. 분석결과, 수심이 깊은 파랑관측부이 정점에서는 수위/흐름효과를 고려할 경우 파고변화가 크지 않게 나타났으나, 수심이 얕은 비교 정점에서는 수위/흐름효과의 고려 여부에 따라 5~10%의 유의미한 파고변화가 나타났다.

• 대한치과기공학회지
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• 제43권2호
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• pp.48-55
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• 2021

Purpose: This study aimed to analyze deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a digital light processing (DLP) printer. Methods: An edentulous model was prepared and an occlusal rim was produced. The edentulous model and occlusal rim were scanned using a model scanner. A complete denture was designed using a dental computer-aided design, and the denture base and artificial tooth were separated. Ten complete arch artificial teeth were printed using a 3D printer (DLP). Complete arch artificial teeth was classified into the following three groups: a group no post-curing (NC), a group with 10 minutes post-curing (10M), and a group with 20 minutes post-curing (20M). Specimens were scanned using a model scanner. The scanned data were overlapped with the reference data. Statistical analysis was performed using one-way ANOVA analysis of variance, Kruskal-Wallis test, and Mann-Whitney U test (α=0.05). Results: Regarding the overall deviation of complete arch artificial teeth, the NC group showed the lowest mean deviation of 111.13 ㎛ and the 20M group showed the highest mean deviation of 131.03 ㎛. There were statistically significant differences among the three groups (p<0.05). Conclusion: The complete arch artificial tooth showed deformation due to post-curing. In addition, the largest shrinkage deformation was observed at 10 minutes of post-curing, whereas the least deformation was observed at 20 minutes.

• 대한화학회지
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• 제37권8호
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• pp.753-756
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• 1993

디메틸술록시드와 물 및 몇가지 알칸올간의 분자 상호작용에 관한 연구를 증기압 삼투법으로 40$^{\circ}C$에서 수행하였다. 디메틸술폭시드는 물, 메탄올, 에탄올, 1-프로판올, 2-프로판올과 2-메틸-1-프로판올에서는 라울의 법칙에서 부의 벗어남을 나타내었으며, 1-부탄올과 1-펜탄올에서는 라울의 법칙에서 정의 벗어남을 나타내었다. 이 결과를 이종분자간의 상호작용과 DMSO 분자의 자체회합으로 각각 해석하였다. 측정한 물과 알칸올과의 히드록실 양성자의 화학적 이동도 이 결과를 뒷받침하였다.

• 한국연소학회지
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• 제5권2호
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• pp.51-62
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• 2000

The relationship among the flame radiation, NOx emissions, residence time, and global strain rate are examined for turbulent non-premixed jet flames with wide variations in coaxial air conditions. Measurements of NOx emission, flame geometry and flame radiation were made to explain the NOx emission scaling based on global parameters such as flame residence time, global strain rate, and radiant fraction. The overall 1/2-power scaling is observed in coaxial air flames, irrespective of coaxial air conditions, but the degree of deviation from the 1/2-slope curve in each case differs from one another. From the comparison between the results of pure hydrogen flames and those of helium diluted hydrogen flames, it is observed that flame radiation plays a significant role in pure hydrogen flames with coaxial air and the deviation from 1/2-power scaling may be explained in two reasons: the difference in the flame radiation and the difference in jet similarity in coaxial air flames. From the radiation measurements, more detailed explanations on these deviations were suggested.

• The Journal of Asian Finance, Economics and Business
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• 제8권10호
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• pp.207-218
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• 2021

The present research intends to examine the herding aspect during the COVID-19 outbreak. The study is conducted to achieve specific objectives, so the underlying sampling technique is purposive sampling. The considered data source is the Pakistan Stock Exchange (PSX). Daily stock prices of 528 listed companies in PSX have been taken from the official website of PSX from 1998 to 2021. The current study envisions investigating the herding aspects for pre-pandemic and the time covering the pandemic period. The study has also targeted ten sectors of PSX. The present study's motive is to investigate investors' herding prospects before and during the pandemic in the Pakistan Stock Exchange (PSX) and its selected sectors. Daily closing stock prices of listed companies have been collected from the official website of PSX to calculate the stock returns. The Cross-Sectional Absolute Deviation (CSAD) has been used as a herding measure. Findings revealed that herding has not been observed in PSX during both time spans and even not during the bullish and bearish trends. However, robust sectoral evidence has been observed during the pandemic. It implies that investors in PSX tend to follow the crowd irrespective of making their own decisions to avoid further losses.

• 조명전기설비학회논문지
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• 제26권6호
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• pp.8-15
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• 2012

In this paper, we investigated possible optical parameters causing deviation of experimentally observed output spectra from theoretically predicted results in a high-order fiber comb filter based on a polarization-diversity loop configuration. They include wavelength dependency of half-wave plates (HWPs) inserted in the filter for wavelength switching and the modal birefringence of single-mode fibers (SMFs) with which optical components comprising the filter are connected. In order to consider the effect of the modal birefringence of the SMF on a filter performance, it is modeled as a low birefringence fiber with an arbitrary orientation angle and birefringence. It is found from the simulation results that the modal birefringence of SMFs strongly affects the spectral characteristics of the filter and decreases the extinction ratio of the filter, compared with the wavelength dependency of HWPs. In particular, it is also confirmed that the spectral deviation and asymmetric distortions of side-lobes in narrow band transmission spectra result mainly from the modal birefringence of SMFs.

• 한국인지과학회:학술대회논문집
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• 한국인지과학회 2010년도 춘계학술대회
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• pp.48-54
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• 2010

INTRODUCTION Interaction between temporal events at the millisecond level is important for visual and tactile interaction. OBJECT The aim of the present study is to identify any neural signature, as reflected in event-related potentials (ERP), for the integrative processes when the two sensory modalities are stimulated in synchrony as opposed to when they are stimulated separately. METHOD The basic strategy was to compare ERP signals obtained with simultaneous visual and tactile stimulation with a linear summation of ERP patterns obtained with each modality stimulated separately. Condition were presented, paired with various stimulus-onset-asynchronies (SOA) ranging from - 300 ms (tactile-first) to 300 ms (visual-first), and in trials where only one modality was stimulated alone. RESULT A positive deviation was located in observed ERP at C4 electrode (contralateral to the stimulated hand) at 200-400 ms, in comparison to the predicted ERP. The deviation was present at all SOAs other than -300ms (tactile-first) and 300 ms (visual-first). There was also a positive deviation at occipital leads at the 50-ms SOA (visual-first) trials. DISCUSSION It suggested that neural signatures of cross-modal integration occur within a limited time-window. The deviations were specifically localized at the contralateral somatosensory and visual cortices, indicating that the integration happens at or before the level of the primary cortices.

• Progress in Superconductivity
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• 제4권1호
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• pp.19-26
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• 2002

We have earlier developed a 40-channel SQUID system. An important figure of merit of a MEG system is the localization error, within which the underlying current source can be localized. With this system, we investigated the localization error in terms of the standard deviation of the coordinates of the ECDs and the systematic error due to inadequate modeling. To do this, we made localization of single current dipoles from tangential components of auditory evoked fields. Equivalent current dipoles (ECD) at N1m peak were estimated based on a locally fitted spherical conductor model. In addition, we made skull phantom and simulation measurements to investigate the contribution of various errors to the localization error. It was found that the background noise was the main source of the errors that could explain the observed standard deviation. Further, the amount of systematic error, when modeling the head with a spherical conductor, was much less than the standard deviation due to the background noise. We also demonstrated the performance of the system by measuring the evoked fields to grammatical violation in sentence comprehension.