• 제목/요약/키워드: f0

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기공 운동이 비만인의 건강관련 삶의 질(SF-36)과 심리적 요인에 미치는 영향 (The Effect of Qigong Exercise on SF-36 and Psychological Factors of Middle-aged Obese)

  • 소위영;서한교;최대혁;신현정;조은효;유병욱;전태원
    • 한국노년학
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    • 제30권1호
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    • pp.21-30
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    • 2010
  • 많은 비만인들은 사회적인 편견과 차별로 인하여 신체상에 대한 불만족, 우울, 불안 및 정서장애를 경험하고 있으며, 더 나아가 건강과 관련된 삶의 질의 저하를 나타내고 있다. 이러한 비만인들의 정신적 고통을 개선하기 위하여 운동요법은 하나의 긍정적인 치료 방법으로 권장되고 있다. 본 연구는 동양의 전통 운동형태 중 기공 운동이 비만인에게 건강관련 삶의 질(SF-36), 자기효능감, 우울, 불안, 피로의 심리적 요인에 어떠한 효과를 나타내는지를 살펴봄으로써 비만인을 위한 운동처방 지침을 제공하고자 한다. 본 연구의 피검자는 S시 G구에 소재한 S대학교 골든웰빙 운동프로그램에 참가하는 50-60대의 성인으로 통제군 16명, 운동군 17명으로 분류하였다. 기공 운동은 12주 동안 주2회의 빈도로 실시하여, 운동 전 후로 건강관련 삶의 질(SF-36), 신체적 자기효능감, 우울, 불안, 피로도 변인을 측정하였다. 12주간의 기공 운동 전 후 건강관련 삶의 질(SF-36)의 8항목 중 감정역할 제한(F=0.187, p=0.668), 정신건강(F=2.043, p=0.163)은 집단 간의 유의한 차이를 나타내지 못하였으나, 신체기능(F=15.151, p<0.001), 신체역할 제한(F=18.278, p<0.001), 사회적 기능(F=4.957, p=0.033), 활력/피로(F=11.485, p=0.002), 신체통증(F=6.623, p=0.015), 일반적인 건강(F=4.498, p=0.042)의 6가지 변인은 집단 간의 유의한 차이를 나타내었다. 불안(F=0.631, p=0.433)은 집단 간의 유의한 차이를 나타내지 못하였으나, 신체적 자기효능감(F=6.124, p=0.019), 우울(F=5.109, p=0.031), 피로(F=7.998, p=0.008)의 3가지 변인은 집단 간의 유의한 차이를 나타내었다. 비만인에게 있어서 기공 운동은 비록 느린 동작으로 수행되는 낮은 강도의 운동형태일지라도 운동자체가 가져다주는 정신 심리적인 개선효과가 분명하게 나타나는 운동임을 본 연구를 통하여 확인할 수 있었다.

인장시험에 의한 낚시의 변형과 파단하중 (The Deformation and Breaking Load of the Fishing Hook by the Tensile Test)

  • 고관서;김용해
    • 한국수산과학회지
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    • 제14권4호
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    • pp.269-275
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    • 1981
  • 연근해 어업용 낚시 6가지형에 대하여 만능실험기로 인장속도를 290mm/min와 780mm/min로 하여 실험한 결과는 다음과 같다. 1) 낚시의 직경은 d, 미늘 기부에서 허리굽이까지의 거리를 w라 하면 낚시의 파단하중은 $B={\alpha}\;wd^2+\beta$ (단, B는 kg, w와 d는 mm)로 나타내며, 인장연도가 290mm/min 일 때의 $\alpha,\;\beta$는 둥근형 낚시 $SR_{p}-F_{1}B,\;SR_{p}-F_{1}S$$\alpha_{s}=0.5,\;\beta_{s}=1.6$, 모난형 낚시 $SA_{a}-F_{1}S,\;SA_{a}-F_{1}S_k,\;LA_{a}-F_{1}S_{k}$$\alpha_{s}=1.1,\;\beta_{s}=2.0$긴 낚시 $LA_{p}-F_{1}S$$\alpha_{s}=0.4,\;\beta_{s}=1.5$정도이다. 2) 인장속도가 780mm/min 일 때 윗식에서 $\alpha,\;\beta$는 둥근형 낚시는 $\alpha_{f}=0.4,\;\beta_{f}=1.4$모난형 낚시는 $\alpha_{f}=1.0$ 일본산은 $\beta_{f}=0.9$, 국산은 $\beta_{f}=-2.5$ 긴 낚시는 $\alpha_{=}0.6,\;\beta_{f}=0.4$ 정도이다. 3) 낚시의 파단변형률은 $40\sim60\%$ 정도이며, 인장속도가 빠를 때의 변형률은 느릴 때에의 $95\%$ 정도이나, 빠를 때의 파단하중은 느릴 때의 $80\%$ 정도이다. 4) 낚시가 파단되는 부위는 인장속도에 관계없이 거의 모두 허리굽이 부분이며 꼭지 기부에서 파단점까지의 거리는 낚시 길이와 거의 같다.

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Monolithic zirconia crowns: effect of thickness reduction on fatigue behavior and failure load

  • Prott, Lea Sophia;Spitznagel, Frank Akito;Bonfante, Estevam Augusto;Malassa, Meike Anne;Gierthmuehlen, Petra Christine
    • The Journal of Advanced Prosthodontics
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    • 제13권5호
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    • pp.269-280
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    • 2021
  • PURPOSE. The objective of this study was to evaluate the effect of thickness reduction and fatigue on the failure load of monolithic zirconia crowns. MATERIALS AND METHODS. 140 CAD-CAM fabricated crowns (3Y-TZP, inCorisTZI, Dentsply-Sirona) with different ceramic thicknesses (2.0, 1.5, 1.0, 0.8, 0.5 mm, respectively, named G2, G1.5, G1, G0.8, and G0.5) were investigated. Dies of a mandibular first molar were made of composite resin. The zirconia crowns were luted with a resin composite cement (RelyX Unicem 2 Automix, 3M ESPE). Half of the specimens (n = 14 per group) were mouth-motion-fatigued (1.2 million cycles, 1.6 Hz, 200 N/ 5 - 55℃, groups named G2-F, G1.5-F, G1-F, G0.8-F, and G0.5-F). Single-load to failure was performed using a universal testing-machine. Fracture modes were analyzed. Data were statistically analyzed using a Weibull 2-parameter distribution (90% CI) to determine the characteristic strength and Weibull modulus differences among the groups. RESULTS. Three crowns (21%) of G0.8 and five crowns (36%) of G0.5 showed cracks after fatigue. Characteristic strength was the highest for G2, followed by G1.5. Intermediate values were observed for G1 and G1-F, followed by significantly lower values for G0.8, G0.8-F, and G0.5, and the lowest for G0.5-F. Weibull modulus was the lowest for G0.8, intermediate for G0.8-F and G0.5, and significantly higher for the remaining groups. Fatigue only affected G0.5-F. CONCLUSION. Reduced crown thickness lead to reduced characteristic strength, even under failure loads that exceed physiological chewing forces. Fatigue significantly reduced the failure load of 0.5 mm monolithic 3Y-TZP crowns.

A NOTE ON EXTREMAL LENGTH AND CONFORMAL IMBEDDINGS

  • Chung, Bo-Hyun
    • Journal of applied mathematics & informatics
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    • 제28권5_6호
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    • pp.1315-1322
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    • 2010
  • Let D be a plane domain whose boundary consists of n components and $C_1$, $C_2$ two boundary components of D. We consider the family $F_1$ of conformal mappings f satisfying f(D) $\subset$ {1 < |w| < ${\mu}(f)$}, $f(C_1)=\{|w|=1\}$, $f(C_2)=\{|w|={\mu}(f)\}$. There are conformal mappings $g_0$, $g_1({\in}F_1)$ onto a radial and a circular slit annulus respectively. We obtain the following theorem, $$\{{\mu}(f)|f\;{\in}\;F_1\}=\{\mu|\mu(g_1)\;{\leq}\;{\mu}\;{\leq}\;{\mu}(g_0)\}$$. And we consider the family $F_n$ of conformal mappings $\tilde{f}$ from D onto a covering surfaces of the Riemann sphere satisfying some conditions. We obtain the following theorems, {$\mu|1$ < ${\mu}\;{\leq}\;{\mu}(g_1)$} ${\subset}\;\{{\mu}(\tilde{f})|\tilde{f}\;{\in}\;F_2\}\;{\subset}\;\{{\mu}(\tilde{f})|\tilde{f}\;{\in}\;F_n\}$ and ${\mu}(\tilde{f})\;{\leq}\;{\mu}(g_0)^n$.

A FIXED POINT APPROACH TO THE STABILITY OF THE QUADRATIC AND QUARTIC TYPE FUNCTIONAL EQUATIONS

  • Jin, Sun-Sook;Lee, Yang-Hi
    • 충청수학회지
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    • 제32권3호
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    • pp.337-347
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    • 2019
  • In this paper, we investigate the generalized Hyers-Ulam stability of the quadratic and quartic type functional equations $$f(kx+y)+f(kx-y)-k^2f(x+y)-k^2f(x-y)-2f(kx)\\{\hfill{67}}+2k^2f(x)+2(k^2-1)f(y)=0,\\f(x+5y)-5f(x+4y)+10f(x+3y)-10f(x+2y)+5f(x+y)\\{\hfill{67}}-f(-x)=0,\\f(kx+y)+f(kx-y)-k^2f(x+y)-k^2f(x-y)\\{\hfill{67}}-{\frac{k^2(k^2-1)}{6}}[f(2x)-4f(x)]+2(k^2-1)f(y)=0$$ by using the fixed point theory in the sense of L. $C{\breve{a}}dariu$ and V. Radu.

Evaluation of Reciprocal Cross Design on Detection and Characterization of Non-Mendelian QTL in $F_2$ Outbred Populations: I. Parent-of-origin Effect

  • Lee, Yun-Mi;Lee, Ji-Hong;Kim, Jong-Joo
    • Asian-Australasian Journal of Animal Sciences
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    • 제20권12호
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    • pp.1805-1811
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    • 2007
  • A simulation study was conducted to evaluate the effect of reciprocal cross on the detection and characterization of parent-of-origin (POE) QTL in $F_2$ QTL populations. Data were simulated under two different mating designs. In the one-way cross design, six $F_0$ grand sires of one breed and 30 $F_0$ grand dams of another breed generated 10 $F_1$ offspring per dam. Sixteen $F_1$ sires and 64 $F_1$ dams were randomly chosen to produce a total of 640 $F_2$ offspring. In the reciprocal design, three $F_0$ grand sires of A breed and 15 $F_0$ grand dams of B breed were mated to generate 10 $F_1$ offspring per dam. Eight $F_1$ sires and 32 $F_1$ dams were randomly chosen to produce 10 $F_2$ offspring per $F_1$ dam, totaling 320 $F_2$ offspring. Another mating set comprised three $F_0$ grand sires of B breed and 15 $F_0$ grand dams of A breed to produce the same number of $F_1$ and $F_2$ offspring. A chromosome of 100 cM was simulated with large, medium or small QTL with fixed or different allele frequencies in parental breeds. A series of tests between Mendelian and POE models were applied to characterize QTL as Mendelian, paternal, maternal or partial expression QTL. The overall detection powers were similar between the two mating designs. However, the proportions of paternally expressed QTL that were declared as paternal QTL type were greater in the reciprocal cross design than in the one-way cross, and vice versa for Mendelian QTL. When QTL alleles were segregating in parental breeds, a significant proportion of Mendelian QTL were spuriously declared POE QTL, suggesting that care must be taken to characterize imprinting QTL in a QTL mapping population with a small number of $F_1$ parents.

ON INTEGRAL MEANS OF DERIVATIVES OF UNIVALENT FUNCTIONS

  • Elhosh, M.M.
    • 대한수학회보
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    • 제24권1호
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    • pp.13-17
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    • 1987
  • Let S denote the class of nivalent functions normalized so that f(0)=f'(0)-1=0 in vertical bar z vertical bar <1. Let $S_{\alpha}$$^{*}$, -.pi./2<.alpha.<.pi./2, denote the subclass of S that satisfies Re $e^{i{\alpha}}$zf'(z)/f(z).geq.0 in vertical bar z vertical bar <1; then f is called .alpha.-spiral-like and the case .alpha.=0 is the class of normalized starlike functions [6, pp.52]. Let T denote the class of functions f normalized as above and satisfying Im z[Im f(z)]..geq.0 in vertical bar z vertical bar <1; then f is called typically real and T contains those functions of S whose coefficients are real [6, pp.55]. Also, in view of [6, pp.231], let B(.lambda.) be the class of function normalized as above and map vertical bar z vertical bar <1 onto the complement of an arc with radial angle .lambda.(0<.lambda.<.pi./2). The radial angle is meant to be the angle between the tangent and radial vectors to the arc. This note includes a sharp version for Corollary 1 of [2] when f.mem. $S_{\alpha}$$^{*}$ as well as a logarithmic coefficient estimate.nt estimate.

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F0값 수준을 달리한 삼계탕의 실온 저장 중 물리화학적 및 관능학적 특성 (Physicochemical and sensory characteristics of Samgyetang retorted at different F0 values during storage at room temperature)

  • 이진환;이진호;이근택
    • 한국식품저장유통학회지
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    • 제21권4호
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    • pp.491-499
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    • 2014
  • 본 연구는 레토르트 삼계탕을 멸균 조건을 달리하여 실온 저장하면서 물리화학적 또는 관능학적 변화를 관찰하고 적정 가열 처리 조건을 파악하기 위해 실시하였다. $F_0$값을 4, 7과 10으로 각각 달리하여 레토르트 삼계탕을 제조한 후 $25^{\circ}C$에서 12개월 동안 저장하며 물리화학적 품질 변화를 비교하였다. 저장기간 중 삼계탕의 pH는 저장기간에 따라 감소하는 경향을 나타낸 반면, VBN, 카보닐, TBARS, 점도, 경도 값과 산소 농도 비율은 $F_0$값 수준이 높아질수록 증가하는 경향을 보였다. 관능검사 결과 F10 처리구의 12개월 후 조직감 항목을 제외한 모든 시료들에서 상품성 한계치인 5.0 이상으로 평가되었다. 종합적으로 $F_0$값 수준이 높을수록 제조 직후 및 저장 과정 중 레토르트 삼계탕의 품질열화 정도가 심하다는 것을 확인할 수 있었다. 따라서 삼계탕의 저장 중 품질 저하를 줄이고 안전성을 보장하는 적정 멸균 조건으로 제품을 생산하기 위한 기술개발이 필요할 것으로 사료된다.

Non-Newtonian Intrinsic Viscosities of Biopolymeric and Nonbiopolymeric Solutions (I)

  • Jang, Chun-Hag;Kim, Jong-Ryul;Ree, Tai-Kyue
    • Bulletin of the Korean Chemical Society
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    • 제8권4호
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    • pp.318-324
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    • 1987
  • Experimental results for viscous flow of poly (${\gamma}$ -methyl L-glutamate) solutions have been published elsewhere. The data of $[{\eta}]^f / [{\eta}]^0$ are expressed by the following equation, $\frac{[{\eta}^f]}{[{\eta}^{\circ}]}=1-\frac{A}{\eta^\circ}{1-\frac{sin^{-1}[{\beta}_2(f/{\eta}_0)\;{e}xp\;(-c_2f^2/{\eta}_0^2kT)]}{{\beta}_2f/{\eta}_0}$ (A1) where $[{\eta}]^f\; and\; [{\eta} ]^0$ are the intrinsic viscosity at shear stress f and zero, respectively, $ A{\equiv}lim\limits_{C{\rightarrow}0}[(1/C)(X_2/{\alpha}_2)({\beta}_2/{\eta}_0)],{\eta}_0$ viscosity of the solvent, ${\beta}_2$ is the relaxation time of flow unit 2, $c_2$ is a constant related to the elasticity of flow unit 2. The theoretical derivation of Eq.(A1) is given in the text. The experimental curves of $[{\eta}]^f / [{\eta}]^0$ vs. log f are compared with the theoretical curves calculated from Eq.(A1) with good results. Eq.(A1) is also applied to non-biopolymeric solutions, and it was found that in the latter case $c_2 = 0.$ The reason for this is explained in the text. The problems related to non-Newtonian flows are discussed.

Weak Convergence for Nonparametric Bayes Estimators Based on Beta Processes in the Random Censorship Model

  • Hong, Jee-Chang
    • Communications for Statistical Applications and Methods
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    • 제12권3호
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    • pp.545-556
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    • 2005
  • Hjort(1990) obtained the nonparametric Bayes estimator $\^{F}_{c,a}$ of $F_0$ with respect to beta processes in the random censorship model. Let $X_1,{\cdots},X_n$ be i.i.d. $F_0$ and let $C_1,{\cdot},\;C_n$ be i.i.d. G. Assume that $F_0$ and G are continuous. This paper shows that {$\^{F}_{c,a}$(u){\|}0 < u < T} converges weakly to a Gaussian process whenever T < $\infty$ and $\~{F}_0({\tau})\;<\;1$.