• Title/Summary/Keyword: difference characteristics

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THE STUDY OF CRANIOFACIAL SKELETAL CHARACTERISTICS IN CLASS II DIVISION 1 MALOCCLUSION (Angle II급 1류 부정 교합의 안면 두개골의 골격 특성에 관한 연구)

  • Mo, Duk-Jin;Chung, Kyu-Rhim
    • The korean journal of orthodontics
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    • v.18 no.1 s.25
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    • pp.141-154
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    • 1988
  • This study was designed to investigate the difference between craniofacial characteristics of the normal occlusion and those of Class II Div. 1 malocclusion. The sample was divided into 2 groups, the 50 subjects of Normal occlusion, the 50 subjects of Class II Div. 1 malocclusion in both sexes. Both groups aged from 11 to 14 years. The results of this study were as follows; 1. No significant difference was observed in cranial base shape between both groups, but anterior cranial base size of Class II Div. 1 malocclusion group was larger than that of normal group. 2. No significant difference in antero-posterior position of Maxilla to cranial base was founded between both groups. 3. No difference in Mandibular shapes and Mandibular plane angles to the cranial base was observed between Class II Div. 1 malocclusion and normal occlusion, but Mandibular position in Class II Div. 1 malocclusion was posterior to that of normal group. 4. Antero-posterior relationship of Maxilla and Mandible was significant difference between both groups, but vertical relationship of those was no difference. 5. Maxillary incisor position to cranial base of Class II Div. 1 malocclusion was anteior to normal occlusion, and Maxillary posterior teeth was posterior. Mandibular incisor and mandibular posterior teeth position was no difference. 6. Upper and lower lip position to esthetic line of Class II Div. 1 malocclusion was anterior to normal occlusion.

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The Difference of Subjective Sense Recognition According to the Characteristics of Sensory Processing (처리특성에 따른 주관적 감각인식의 차이)

  • Park, Mi-Hee;Kim, Kyeong-Mi
    • The Journal of Korean Academy of Sensory Integration
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    • v.5 no.1
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    • pp.21-30
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    • 2007
  • Objective: This study was to provide a standard for the evaluation of The Korean version of Adolescent/Adult Sensory Profile(K-ASP) for University students and to investigate the difference of the subjective sense recognition regarding the characteristics of sensory processing. Method: The subjects consisted of 84 University students. A researcher examined subjective sense recognition and K-ASP for subjects. Visual Analog Scale used to evaluate subjective sense recognition and K-ASP was utilized to evaluate the characteristics of sensory processing. Results: 1. The average scores and standard deviation of K-ASP were $32.93{\pm}7.88$ for low registration group, $39.39{\pm}6.55$ for sensory seeking group, $38.94{\pm}9.13$ for sensory sensitivity group, and $34.24{\pm}7.85$ for sensory avoiding group. 2. The correlation between the total score on an each quadrant and the subjective sense recognition are -.27 for low registration group, .11 for sensory seeking group, .09 for sensory sensitivity group and .12 for sensory avoiding group. It showed the statistically significant correlation between the total score of low registration and the subjective sense recognition group(p<.05). 3. The average scores and standard deviation of the subjective sense recognition were $5.22{\pm}1.56$ for high threshold and $7.28{\pm}1.70$ for low threshold. The subjective sense recognition according to the characteristics of sensory processing showed the statistically significant difference. Conclusions: This study supports the theory that there is the difference of sensory recognition according to each individual and we found that people with difficulties of sensory processing acknowledge their characteristics of sensory processing well. Evaluation of sensory processing ability through interview or questionnaire supports the fact which it is reliable.

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Quality Characteristics of Muffins Containing Domestic Blueberry (V. corymbosum) (국내산 블루베리 첨가 머핀의 품질 특성)

  • Hwang, Seung-Hwan;Ko, Seong-Hye
    • Journal of the East Asian Society of Dietary Life
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    • v.20 no.5
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    • pp.727-734
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    • 2010
  • As the blueberry content in batter increased, the pH of batter decreased According to the measured results about specific gravity of muffin batter, there was no significant difference among each batter including 0% 10% and 15% blueberry, while each 15% 20% and 30% dough showed significant difference (p<0.001). According to the results about general quality characteristics of muffins such as volume, weight and specific gravity, as the content of blueberry juice increased, the volume decreased. In terms of measuring specific volume, it decreased as the added amount increased According to measuring the chromaticity of muffins, as the blueberry content increased in the muffins, brightness and yellowness decreased while redness increased In terms of the measurement of texture, the hardness showed significant difference among all sample muffins (p<0.001). Significant difference was not shown in the springiness (p<0.05). As the amount of blueberry juice increased, the chewiness of the muffins was grown. The result showed a significant difference between samples in the adhesiveness (p<0.001). As the amount of blueberry juice increased, the adhesiveness of muffins also increased In the organoleptic test, a significant difference was shown in the color among all sample (p<0.001). The blueberry juice content of 20% showed highest figures with $7.12{\pm}0.67$. In terms of flavor, the content of 20% also showed highest figures among all samples with $7.16{\pm}0.62$ (p<0.001). Concerning the taste all samples showed a significant difference while 20% content did the highest figure. In the overall acceptability the content of 10% showed the lowest figure while 20% displayed the highest figure with 7.16. According to the quality characteristics of blueberry muffins, the best blueberry juice content would be 20% content group.

An Analysis of the Gender Difference in National Assessment of Educational Achievement of Mathematics (수학과 국가수준 학업성취도 평가에서의 성별 차이 분석)

  • Ko, Jung-Hwa;Do, Jong-Hoon;Song, Mi-Young
    • Journal of Educational Research in Mathematics
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    • v.18 no.2
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    • pp.179-200
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    • 2008
  • In this paper, we analyzed the characteristics of the gender difference with the results of National Assessment of Educational Achievement(NAEA) from 2004 to 2006, which subjects are 3rd, 9th and 10th graders. First, we analyzed the characteristics of the achievement by the scale scores, according to years, achievement standards, grades. Second, we surveyed the number of items and ratio which male/female prevails and its characteristics according to grades, difference levels, content areas(i.e., numbers and operations, figures, measurement, probability and statistics, letters and formulas, patterns and function). Furthermore, we perform in-depth analysis of the items which gender difference in correct response proportion is more than 7% and analyze the cause of gender difference of achievement. This paper provides large valid data about gender difference by the results of NAEA. It can give suggestions with regard to policy making.

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The Relevance Analysis between 4 Body Type through 5 Part Measuring and Ordinary Symptoms (5부위 측정에 의한 사체형과 소증(素證)의 연관성에 대한 분석연구)

  • Choi, Yong-Seok;Moon, Goo;Baek, Dong-Gi
    • The Journal of Internal Korean Medicine
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    • v.33 no.4
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    • pp.558-571
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    • 2012
  • Objectives : The purpose of this study was to verify the difference in diet, digestion, sweat, feces and urination characteristics according to body shape characteristic. Methods : 1,302 participants were divided into 4 body types and were assessed through the questionnaire about Sasang constitution's ordinary symptoms such as diet, digestion, sweat, feces and urination characteristics. Results : Hyeong-keum type had active characteristics in the size of their meal and speed of taking meal. Hyeong-keum type got the most in the amount of sweating. And Yo-wi type reported the greatest urinary frequency. Conclusions : The difference of body type influences Sasang constitution's ordinary symptoms such as diet, sweat and urination. In digestion and feces, there was no statistical significance in the difference.

Impact of Gender Differences in DNA on Consumer Buying Behavior

  • Kim, Young-Ei
    • Journal of Distribution Science
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    • v.14 no.2
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    • pp.33-39
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    • 2016
  • Purpose The purpose of this study is to investigate the impact of gender differences in DNA on consumer buying behavior both online and offline and other buying channels to find out effective sales promotion strategies of enterprises. Research design, data, and methodology - This study investigated the relation between chromosome and DNA, DNA and gene, and gene and human behavior of gender. The study shows generic characteristics have influence upon consumers' buying behavior and inclination, and examined the effects of genetic characteristics depending upon the difference of gender DNA upon consumers' buying behavior. Results - Precedent studies on genetics and ethology showed close relations between chromosome and DNA, DNA and gene, and gene and buying behavior of the gene. 'Hunting and protection', one of the genetic characteristics in men's DNA, had great influence upon the consumers' different buying behavior. Conclusion - Gender DNA difference in genetics and ethology disclosed fundamental reasons for the difference in buying behavior and inclination of men and women. It gives implications that marketing strategies of advertising and sales promotion should be made in different ways depending upon men and women.

Parametric Study on the Characteristics of Multiphase Laminar Flow with Density Difference in Various Microchannels (다양한 형상의 마이크로 채널 내 밀도 차를 가진 다상 층류 유동의 특성에 대한 매개변수 연구)

  • Paek, Seung-Ho;Kim, Dong-Sung;Choi, Young-Ki
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.33 no.10
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    • pp.783-788
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    • 2009
  • In this paper, we have performed a parametric study on the characteristics of multiphase laminar flow with density difference in various microchannels. The interface between multiphase fluids is rotated by the gravitational forces induced by density difference. The numerical simulations were carried out via commercial CFD package to study the characteristics of multiphase laminar flow. The results of the numerical simulations in this study were verified by comparing with the previously reported experimental results in the literature. We have also proposed a new dimensionless relationship between dimensionless rotation angle of interface and dimensionless parameters are proposed for square microchannels with various aspect ratios. The dimensionless relationship could be widely applied to the reliable design of various microfluidic devices dealing with multiphase laminar flow.

The Effect of Coal Particle Arrangement and Size Difference on Combustion Characteristics (미분탄 입자의 크기 차이와 배열이 연소특성에 미치는 영향)

  • Kim, Ki-Duck;Kim, Ho-Young;Cho, Chong-Pyo;Yoon, Suk-Goo
    • 한국연소학회:학술대회논문집
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    • 2007.05a
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    • pp.47-53
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    • 2007
  • The laminar combustion characteristics of interacting coal particles in a convective flow are numerically investigated at particle arrangement and size difference. The numerical simulations, which use the two-step global reaction model to account for the surrounding gas effect, show the detailed interaction among the inter-space particles, undergoing devolatilization and subsequent char burning. Several parametric studies, which include the effect of the gas temperature (1700 K), high pressure(10 atm) and variation in geometrical arrangement of the particle diameter on the volatile release rate and the char combustion rate, have been carried out. The comparison indicates that the shift to the multiple particle arrangement resulted in the substantial change of the combustion characteristics and that the volatile release rate of the interacting coal particles exhibits a strong dependency on the particle spacing and size difference.

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Assessement of Consolidation Characteristics by Field Instrumentation (현장계측사례를 통한 압밀특성 평가)

  • Song, Jeong-Rak;Baek, Seung-Hun;O, Da-Yeong
    • Proceedings of the Korean Geotechical Society Conference
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    • 1992.10a
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    • pp.121-130
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    • 1992
  • Assessement of comsolidation characteristics of soft soil is very important in the project of soft soil improvement. In the design step, the consolidation characteristics of soil is determined by the laboratory tests (typically oedometer test), generally. But there is big differences between the condition of laboratory test and the condition of field(in situ). the differences results in the considerable difference between the predicted and measured consolidation behavior. This article analyzed the consolidation data of the "SOFT SOIL IMPROVEMENT PROJECT of the 2nd Namdong Industrial Complex at Inchon". The project was improving the road way net work in the 2nd Namdong Industrial Complex by preloading and sand pile method. Field instrumentation was performed at 10 points which consist of pneumatic piezometers, magnetic probe extensometers, inclinometers and electronic dipmeter. The results showed that there is big difference in the laboratory predicted consolidation behavior and field consolidadion behavior. Also there was big difference in the settlement behavior and pore pressure behavior. This article investigated the above factors by comparing the settlement, pore pressure and strength at different conditions.onditions.

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Vibration Analysis for a Coupled MEMS-Gyroscope Design (연성된 MEMS 자이로스코프 모델의 설계를 위한 진동특성 해석)

  • 방선호;신상하;유홍희
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2003.11a
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    • pp.946-969
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    • 2003
  • Vibration analysis for a coupled MEMS gyroscope design is presented in this paper. MEMS gyroscopes have shown that slight mistuning in fabricated process often leads to significant difference of vibration characteristics between expected and real designs. The difference frequently affects the MEMS gyroscope design in a negative way. As long as the coupling between excited and sensed motions exists, such difference occurs inevitably. In this paper, dimensionless parameters that govern the vibration characteristics of coupled MEMS gyroscope are identified and the effects of the parameters on the vibration characteristics are investigated for the design of the MEMS gyroscope.

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