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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Integral equations and operator theory 36 (2000), S. 92-106 
    ISSN: 1420-8989
    Keywords: 47A10 ; 47A60 ; 34G10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We investigate the perturbation of the Drazin inverse of a closed linear operator recently introduced by second author and Tran, and derive explicit bounds for the perturbations under certain restrictions on the perturbing operators. We give applications to the solution of perturbed linear equations, to the asymptotic behaviour ofC 0-semigroups of linear operators, and to perturbed differential equations. As a special case of our results we recover recent perturbation theorems of Wei and Wang.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Quality of life research 9 (2000), S. 667-674 
    ISSN: 1573-2649
    Keywords: Eating disorders ; Quality of life ; Patient outcomes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: This study investigated the perception of health-related quality of life (HRQoL) in ambulatory patients with eating disorders in relation to the severity of eating symptomatology and psychological comorbidity. Methods: One hundred ninety-seven study patients were consecutively recruited at the Eating Disorders Outpatient Clinic. Short Form-36 items (SF-36), a generic HRQoL questionnaire, the Eating Attitudes Test (EAT-40), and the Hospital Anxiety and Depression Scale (HAD) were used to measure different aspects of HRQoL. The results of the SF-36 were compared with the norms of the Spanish general population for women 18–34 years of age. Results: Patients with eating disorders were more dysfunctional in all areas of the SF-36 compared with women in the general population. There were no differences among the eating disorder diagnostic groups. Higher scores on the EAT-40 and the HAD were associated with a perception of greater impairment on all SF-36 subscales. Conclusion: The evaluation of HRQoL in these patients confirms the impact of these disorders on daily life in areas not directly related to eating disorders. The SF-36 is useful for discriminating among different levels of severity of eating disorders and other psychological comorbidities of these patients.
    Type of Medium: Electronic Resource
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