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van der Voort M.R.,Care and Public Health Research Institute CAPHRI | van Wijngaarden J.,Erasmus University Rotterdam | Janssen S.,PVI Inc | Berden B.,University of Tilburg | van Merode F.,Care and Public Health Research Institute CAPHRI
Journal of Health Services Research and Policy | Year: 2014

Objectives: To improve access to specialist outpatient clinics without adding capacity, Dutch hospitals applied the concept of 'Advanced Access'. Our aim was to determine whether initial improvements are sustained for three years and to identify the factors that influence sustainability. Methods: Qualitative case studies in 14 outpatient specialist clinics. Access measurements at the start, finish and three years after the project were compared. Analysis of sustained and new interventions. Interviews with 52 practitioners, analysed with the constant comparative method to identify general factors that influence sustainability. Results: Eleven out of 14 clinics were able to sustain or improve their reduced delays; two did not and for one it is uncertain. The clinics maintained the majority of the interventions and all introduced new interventions. Three generic factors emerged that influenced their ability to sustain the results: increased responsiveness to better match supply and demand; clinical leadership and incentives; and a shared belief that they can and should control access together. Conclusions: Reduction of delays in access can be sustained if the way of thinking and the planning system becomes demand driven and flexible and if care providers experience benefits. Unlike previous studies, senior management support and formal training was not relevant though clinical leadership and informal socialization was. Making multidisciplinary teams responsible for improvement appears to be vital. © The Author(s) 2014.

Hammar A.,PVI Inc | Venet P.,University Claude Bernard Lyon 1 | Lallemand R.,INRETS | Coquery G.,INRETS | Rojat G.,University Claude Bernard Lyon 1
IEEE Transactions on Industrial Electronics | Year: 2010

One important part of the electrical transportation systems is the energy-storage system. This can be based, for example, on supercapacitors. In this paper, we propose to study its behavior under constraints similar to their uses in power and railway-traction systems. We define an adequate measurement protocol for accelerated aging which is applied to supercapacitors according to two accelerated factors: effective current and temperature. We model the supercapacitors for different states of health. The modeling gives a good estimation of the variation of electrical parameters of the supercapacitor at different states. We reveal general indicators of the supercapacitor's aging, and we discuss about its life cycle. © 2010 IEEE.

PVI Inc | Date: 2012-09-27

Water heater using steam for energy.

PVI Inc and Webster Engineering & Manufacturing Co. | Date: 2009-08-18

Regulating accessories for air supply as part of water heaters and water boilers, namely, an electronic controller used to control a burner in a water heater or boiler by controlling air flow into the burner responsive to changes in physical parameters affecting air and/or fuel density.

Enphase Energy and PVI Inc | Date: 2009-03-24


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