• 제목/요약/키워드: mean values

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순, 구개열자의 하악운동에 관한 연구 (A STUDY ON THE MOVEMENTS OF THE MANDIBLE IN CLEFT LIP AND PALATE INDIVIDUALS)

  • 홍성준;서정훈
    • 대한치과교정학회지
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    • 제15권1호
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    • pp.105-114
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    • 1985
  • In order to obtain the basic data of the movements of the mandible for orthodontic treatment and gnathosurgery of cleft individuals, the ranges and shapes of the movements of the mandible were measured in frontal, sagittal, and horizontal view with Saphon Visi-Trainer CII, in 19 adult cleft lip and palate individuals. The subjects included 5 BCLP, 9 UCLP, and 5 CLA patients. The measurements were compared with the values of normal individuals reported by Kang 1. Frontal view. The mean values for maximal laterotrusion were almost the same as those previously reported for the normal individuals. Mandibular deviation in maximal opening was usually toward the right, while it was mainly toward the left in normal individuals. Typical shield was formed only in the CLA group. 2. Sagittal view; The mean value for maximal protrusion was not different from that of normal group and antero-posterior deviation showed a significant difference. The angle of maximal protrusion and horizontal plane was less than that of normal group. 3. Horizontal view; The mean values for maximal laterotrusion and protrusion were not different from those of the normal group. The angle of the laterotrusion and horizontal plane was larger in the left and smaller in the right.

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삼재(三才)와 사상(四象)의 결합을 통한 심리(心理)에의 운용에 대한 연구 (Study on Operating Psychology through Combining Samjae and Sasang)

  • 송시원;강정수
    • 동의생리병리학회지
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    • 제20권5호
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    • pp.1102-1110
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    • 2006
  • Sambyun(三變) is standard classification for nine palace. Through sambyun you can define new meaning of 'self' in three perspective ways. First 'self' could mean desire, emotion and memory which are ontological values. second, 'self' could mean id, ego, and superego which are practical values. Third 'self' could mean unconscious, preconscious and conscious which are epistemological values. Samjae(三才) is method that analyze things base on common features. Sa sang is method that analyze things base on difference. They both are device that searching for reason. If you put one's mind in center to observe the universe creativity of great absolute and symmetry distinction of yingyang produces jeung(情), supreme intelligence(神), and soul(魂魄). With these facts identity of the heaven(天), earth(地) and man(人) which is named samjae(三才) generates symbols of independent sasang(四象). And also, sasang generates relations between five element(五行), six energy(六氣). From ten shen(十神) relation comes seven feelings(七情) of man which creates a category of the eight trigrams(八卦) for divination and unification of nine palace(九宮). All these process are united.

미세균열의 간격 분포를 이용한 결의 평가(II) (Evaluation for Rock Cleavage Using Distribution of Microcrack Spacings (II))

  • 박덕원
    • 암석학회지
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    • 제25권2호
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    • pp.151-163
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    • 2016
  • 거창지역의 쥬라기 화강암에서 발달하는 결의 특성을 분석하였다. 3개 면, 3개 결에 대한 평가는 (1) 미세균열의 간격의 빈도수(N), (2) 총 간격(${\leq}1mm$), (3) 평균 간격($S_{mean}$), (4) 평균 간격과 중앙 간격($S_{median}$) 사이의 차이값($S_{mean}-S_{median}$), (5) 간격의 밀도(${\rho}$), (6) 도표의 전체구간에 대한 두 지수 사이의 차이값(${\lambda}_H-{\lambda}_L$), (7) 지수의 평균값(${\lambda}_M$), (8) 지수의 상수의 평균값($a_M$), (9) 최초 교차점 이하의 구간에 대한 두 지수 사이의 차이값(${\lambda}t_H-{\lambda}t_L$), (10) 지수의 평균값(${\lambda}t_M$) 및 (11) 지수의 상수의 평균값($at_M$)과 같은 파라미터를 이용하여 수행하였다. 3개 결 그리고 3개 면에 대한 파라미터의 값 사이의 상관성 분석의 결과는 다음과 같다. (I) 파라미터(1, 2, 7 및 8) 및 (II) 파라미터(3, 4 및 5)의 값은 (I) H(3번 결, (H1 + H2)/2) < G(2번 결, (G1 + G2)/2) < R(1번 결, (R1 + R2)/2) 및 (II) R < G < H의 순서이다. 반면에 3개 면에 대한 상기 두 그룹(I~II)의 파라미터의 값은 역순을 보여준다. 그 외에도, 3개 면에 대한 파라미터 $6({\lambda}_H-{\lambda}_L)$, 파라미터 $9({\lambda}t_H-{\lambda}t_L)$, 파라미터 $10({\lambda}t_M)$ 및 파라미터 $11(at_M)$의 값은 각각 R(1번 면, (G1 + H2)/2) < H(3번 면, (R2 + G2)/2) < G(2번 면, (R1 + H2)/2), H < G < R, H < R < G 및 R < H < G의 순이다. 3개 결에 대한 상기 네 파라미터의 값은 R < H < G, R < H < G, H < G < R 및 H < G < R의 다양한 순을 각각 보여준다. 한편, 두 방향의 도표 사이의 최초 접촉점 및 교차점에 해당되는 간격값을 도출하였다. 3개 결에 대한 상기 간격값은 1번 결(R1 및 R2) < 2번 결(G1 및 G2) < 3번 결(H1 및 H2)의 순이다. 3개 면에 대한 간격값은 1번 면(G1 및 H1) < 3번 면(R2 및 G2) < 2번 면(R1 및 H2)의 순이다. 특히 3개 결과 3개 면에 대한 교차각은 1번 결 및 1번 면 < 3번 결 및 3번 면 < 2번 결 및 2번 면의 순이다. 따라서, 1번 결(R1 및 R2) 및 1번 면(G1 및 H1)의 두 도표는 보다 높은 접촉점 또는 교차점의 빈도수를 보여준다. 이러한 변화 특성은 3개 면 및 3개 결의 종합도를 통하여 도출하였다. 마지막으로, 분포 형태와 함께 파라미터의 값을 통한 상관성 분석은 3개 채석면의 판별에 유용하다.

Acculturation, Cultural Orientation, and Clothing Involvement of International Students in Korea

  • Youn, Song-Yi;Lee, Kyu-Hye
    • 한국의류학회지
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    • 제36권6호
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    • pp.641-652
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    • 2012
  • This study took the conceptual framework of acculturation styles into the empirical investigation of international students in Korea. This research identifies the differences in acculturation styles, the characteristics of each segment, the effect of acculturation styles on clothing involvement (clothing involvement and risk probability), and the effect of cultural orientation values (individualism and collectivism) as covariates. The participants were international students attending a university located in Seoul. Data from 153 international students were used for statistical analysis. Respondents were grouped into four acculturation styles (integration, assimilation, separation, and marginalization). The assimilation group had the highest mean score of clothing interest. Cultural orientation values showed a significant covariate effect. With individualism as covariates, the main effect of acculturation styles on clothing interest was significant. In clothing product evaluation criteria, the integration group regarded design, fit and trend as most important. The marginalization group showed a mean score that was significantly lower in brand preference and satisfaction; however, the assimilation group had a mean score that was significantly higher.

영구치 전치의 근원심경과 치관 길이에 관한 연구 (A Study on the Mesio-Distal Crown Diameters and Crown Length of the Permanent Anterior Teeth)

  • 이태정
    • 대한치과기공학회지
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    • 제13권1호
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    • pp.21-26
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    • 1991
  • The mesiodistal crown diameters and crown length of the permanent anterior teeth have been studied and analyzed about the mean size, S.D, S.E etcs from stone models of 100 Korean male and 74 female. From the study, the following conclusions were made : 1. Statistical differences of left and right teeth were not found in the mesio distal crown diameters and crown length of the permanent anterior teeth. 2. The mean values of mesiodistal crown diameters of permanent anterior teeth were slightly larger in male than in females and statistical differences of males and females were found in maxillary right central incisor, mandibular left canine, mandibular right lateral incisor and mandibular right canine. 3. The mean values of crown length of permanent anterior teeth were slightly larger in male than in female and statistical differences of males and females were found in mandibular left canine, mandibular right canine. 4. Mesiodistal crown diameters and crown length of maxillary left lateral incisors and right lateral incisors of female are larger than that of male.

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Rotational viscosity calculation method for liquid crystal mixture using molecular dynamics

  • Kim, J.S.;Jamil, M.;Jung, J.E.;Jang, J.E.;Lee, J.W.;Ahmad, F.;Woo, M.K.;Kwak, J.Y.;Jeon, Y.J.
    • Journal of Information Display
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    • 제12권3호
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    • pp.135-139
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    • 2011
  • This paper presents the directly obtained rotational viscosity values of E7, which includes pentylcyanobiphenol, heptylcyanobiphenol, 4-cyano-4'-n-octyloxy-1,1'-biphenyl, and 4-cyano-4"-n-pentyl-1,1',1"-terphenyl, at various tempe using molecular dynamics computer simulation. The director mean squared displacement was achieved from the squared displacement of the mean director using the concept of the mean director of various nematic liquid crystals. The calculated values were compared with the experiment results that predicted a good agreement. Additional points that must be considered for further study are also discussed.

포항, 오산, 광주지역의 일최대 혼합고 추정 -1983~1992년의 10년간 자료의 분석- (An Approach to Estimate Daily Maximum Mixing Height(DMMH) in Pohang, Osan, and Kwangju Areas -Analysis of 10 years data from 1983 to 1992-)

  • 최진수;백성옥
    • 한국대기환경학회지
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    • 제14권4호
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    • pp.379-385
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    • 1998
  • The Holzworth's method was applied to estimate the daily maximum mixing height (DMMH) in Pohang, Osan and Kwangju areas. The data-base were established with meteorological data collected at air bases in these areas during the period 1983∼1992. It was investigated the seasonality, monthly trends and occurrence frequencies of the estimated DMMH data in each area. The estimated mean DMMH were found in the range of 1,100 m (winter) to 1,450m (spring). These mean DMMH data showed a typical seasonality in which higher values are commonly seen during spring and fall, while lower values during summer and winter seasons. An occurrence of estimated mean DMMH which in the range of 1,000∼2,000m altitude was appeared to be about 60%.

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다이코틱 조건에서의 라우드니스 모델에 관한 연구 (A Study on the Loudness Model in Dichotic Conditions)

  • 차정호;이정권;신성환
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2003년도 춘계학술대회논문집
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    • pp.617-621
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    • 2003
  • Existing loudness models are specified only to diotic sounds in spite of the fact that normal human beings hear dichotic sounds. Approximately, the arithmetic mean of loudness values of both ear signals has been suggested for the resultant perceived loudness. In this study, the dependence of overall loudness perception on the interaural level differences was investigated by the subjective tests. It was found that the larger the interaural level difference, the louder the perception than the mean of calculated loudness values at both ears and the lower the critical band rate or the reference level, the louder the perception than the mean value. A modified loudness model was proposed to he applicable to dichotic sounds by using the equivalent diotic levels.

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Variance estimation for distribution rate in stratified cluster sampling with missing values

  • Heo, Sunyeong
    • Journal of the Korean Data and Information Science Society
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    • 제28권2호
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    • pp.443-449
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    • 2017
  • Estimation of population proportion like the distribution rate of LED TV and the prevalence of a disease are often estimated based on survey sample data. Population proportion is generally considered as a special form of population mean. In complex sampling like stratified multistage sampling with unequal probability sampling, the denominator of mean may be random variable and it is estimated like ratio estimator. In this research, we examined the estimation of distribution rate based on stratified multistage sampling, and determined some numerical outcomes using stratified random sample data with about 25% of missing observations. In the data used for this research, the survey weight was determined by deterministic way. So, the weights are not random variable, and the population distribution rate and its variance estimator can be estimated like population mean estimation. When the weights are not random variable, if one estimates the variance of proportion estimator using ratio method, then the variances may be inflated. Therefore, in estimating variance for population proportion, we need to examine the structure of data and survey design before making any decision for estimation methods.

Count Five Statistics Using Trimmed Mean

  • Hong, Chong-Sun;Jun, Jae-Woon
    • Communications for Statistical Applications and Methods
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    • 제13권2호
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    • pp.309-318
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    • 2006
  • There are many statistical methods of testing the equality of two population variances. Among them, the well-known F test is very sensitive to the normality assumption. Several other tests that do not assume normality have been proposed, but these tests usually need tables of critical values or software for hypotheses testing. McGrath and Yeh (2005) suggested a quick and compact Count Five test requiring only the calculation of the number of extreme points. Since the Count Five test uses only extreme values, this discards some information from the samples, often resulting in a degradation in power. In this paper, an alternative Count Five test using the trimmed mean is proposed and its properties are discussed for some distributions and normal mixtures.