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J.van der Burgt,S.Bosga,F.Blaschke,A.Vandenput 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10
In this paper a new control loop inside the u/i-model is introduced. This control loop applies the derivative of the stator flux magnitude to improve the dynamic stability of the u/i-model. The steady-state flux magnitude and angle error is zero as opposed to the commonly used stator flux magnitude feedback. Linear analysis, simulations and measurements show the excellent performance of the u/i-model with the new control loop.
J.van der Burgt,S Bosga,F.Blaschke,A.Vandenput 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10
In this paper different control loops inside the u/i-model to improve the dynamic stability of the direct field-oriented controller are analyzed. The flux magnitude and the derivative of the flux magnitude are used as feedback signals. Linear analysis, simulations and experiments show that the control loop with the flux derivative is superior at moderate and high flux frequencies and the feedback loop with the flux magnitude is superior at low and very low frequencies.
Health-Care Providers' Perspectives towards Childhood Cancer Treatment in Kenya
Njuguna, F,Burgt, RHM van der,Seijffert, A,Musimbi, J,Langat, S,Skiles, J,Sitaresmi, MN,Ven, PM van de,Kaspers, GJL,Mostert, S Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.9
Background: This study explored perspectives of health-care providers on childhood cancer treatment in Kenya. Materials and Methods: A self-administered questionnaire was completed by 104 health-care providers in January and February 2013. Results: Seventy six percent of the health-care providers believed cancer to be curable. More doctors than other health-care providers had this positive opinion (p=0.037). The majority of health-care providers (92%) believed that most children with cancer will not be able to finish their treatment due to financial difficulties. They considered that prosperous highly-educated parents adhere better with treatment (88%) and that doctors adhere better with treatment for prosperous highly-educated parents (79%). According to 74% of health-care providers, quality of care is better for prosperous highly-educated parents (74%). Most health-care providers reported giving more explanation (71%), work with greater accuracy (70%) and use less difficult vocabulary (55%) to prosperous more educated families. Only 34% of health-care providers reported they feel more empathy towards patients from prosperous families. Reasons for non-adherence with the protocol according to health-care providers are: family refuses drugs (85%), inadequate supply of drugs at pharmacy (79%), child looks ill (75%), and financial difficulties of parents (69%). Conclusions: Health-care providers' health beliefs and attitudes differ for patients with families having high versus low socio-economic backgrounds.