http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Cultural Adaption and Psychometric Analysis of Family APGAR Scale in Iranian Older People
Zeinab Karimi,Zahra Taheri-Kharameh,Fatemeh Sharififard 대한가정의학회 2022 Korean Journal of Family Medicine Vol.43 No.2
Background: Family function is a necessary factor that influences older people’s health. The Family APGAR has been widely used to study family functions. However, there has been no Persian version of this instrument to assess family function in older people. The aim of this study was to determine the psychometric properties of the Persian version of the Family APGAR Scale to evaluate the perception of family functions.Methods: The “forward-backward” procedure was applied to translate the scale from English into Persian. The translated version was checked in terms of validity and reliability, with a sample of 281 older people selected from retirement centers. The factor structure of the scale was also tested using a confirmatory factor analysis. To test reli-ability, internal consistency and test–retest analyses were performed.Results: The results of the confirmatory factor analysis indicated a good structural model. Criterion-related validity was strongly supported by the pattern of association between the APGAR Scale and the social support survey. Cronbach’s α of the scale was 0.88 and test–retest reliability ranged from 0.96 to 0.98, indicating a good range of reli-ability.Conclusion: The findings of this study suggest that the Iranian version of the Family APGAR is a valid and reliable scale to evaluate family functions in health intervention programs.
Dynamic ageing and the mechanical response of Al–Mg–Si alloy through equal channel angular pressing
Vaseghi, Majid,Taheri, Ali Karimi,Hong, Sun Ig,Kim, Hyoung Seop Elsevier 2010 MATERIALS AND DESIGN Vol.31 No.9
<P><B>Abstract</B></P><P>In this paper, dynamic ageing characteristics associated with the application of equal channel angular pressing (ECAP) to Al6061 alloy at elevated temperatures was investigated. Followed by ECAP, Vickers microhardness measurement on the cross-sectional planes and microstructural observations were undertaken using transmission electron microscopy. The combination of the ECAP process with dynamic ageing at both 100°C and 150°C resulted in a significant increase in hardness. The grain size was measured as ∼160nm after four passes. A comparison with the published data on the same alloy processed by ECAP at room temperature and statically aged, suggests several advantages in incorporating dynamic ageing with ECAP. These advantages consist of the ability to attain better grain refinement, increased hardness and the potential for saving time and energy.</P>
Hadi Ghaffarian,Ali Karimi Taheri,유승화,강건욱 한국물리학회 2016 Current Applied Physics Vol.16 No.9
We carry out molecular dynamics simulations of nanoindentation to investigate the effect of cementite size and temperature on the deformation behavior of nanocomposite pearlite composed of alternating ferrite and cementite layers. We find that, instead of the coherent transmission, dislocation propagates by forming a widespread plastic deformation in cementite layer. We also show that increasing temperature enhances the distribution of plastic strain in the ferrite layer, which reduces the stress acting on the cementite layer. Hence, thickening cementite layer or increasing temperature reduces the likelihood of dislocation propagation through the cementite layer. Our finding sheds a light on the mechanism of dislocation blocking by cementite layer in the pearlite.