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  • Cross-cultural  (1)
  • Nonlinear Composites  (1)
  • 1
    ISSN: 1573-0719
    Schlagwort(e): Alzheimer's Disease ; Burden ; Caregiver ; Cross-cultural ; Guatemala ; Hispanic
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Ethnologie , Sociologie
    Notizen: Abstract The intent of this study is to illustrate cultural differences in the amount of perceived burden for primary caregivers of persons with Alzheimer's Disease. Caregivers in Guatemala and Rhode Island were given a questionnaire exploring: caregiver well-being, available supports, traditional ideology, and perceived burden. The data indicate that Guatemalans have less institutional and more informal supports available, as compared with USA caregivers. Guatemalan caregivers brought patients to a doctor sooner after the appearance of their first symptoms (0.9±1.0 years versus 1.6±1.8 years) and had poorer perceived health than USA subjects, suggesting a higher level of caregiver burden. Cultural response bias however may account for the difference in perceived health.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of statistical physics 90 (1998), S. 159-189 
    ISSN: 1572-9613
    Schlagwort(e): Nonlinear Composites ; duality ; effective properties ; percolation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Keller, Dykhne, and others have exploited duality to derive exact results for the effective behavior of two-dimensional Ohmic composites. This paper addresses similar issues in the non-Ohmic context. We focus primarily on three different types of nonlinearity: (a) the weakly nonlinear regime; (b) power-law behavior; and (c) dielectric breakdown. We first make the consequences of duality explicit in each setting. Then we draw conclusions concerning the critical exponents and scaling functions of “dual pairs” of random non-Ohmic composites near a percolation threshold. These results generalize, unify, and simplify relations previously derived for nonlinear resistor networks. We also discuss some self-dual nonlinear composites. Our treatment is elementary and self-contained; however, we also link it with the more abstract mathematical discussions of duality by Jikov and Kozlov.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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