Wind and structural loads data measured on parabolic trough solar collectors at an operational power plant.

Wind loading is a primary contributor to structural design costs of concentrating solar-thermal power collectors, such as heliostats and parabolic troughs. These structures must resist the mechanical forces generated by turbulent wind, while the reflector surfaces must maintain optimal optical performance. Studying wind-driven loads at a full-scale, operational concentrating solar-thermal power plant provides insights into the wind impact on the solar collector field beyond the capabilities of wind tunnel tests or state-of-the-art simulations. We conducted comprehensive field measurements of the atmospheric turbulent wind conditions and the resulting structural wind loads on parabolic troughs at the Nevada Solar One plant over a two-year period. The measurement setup included meteorological masts and structural load sensors on four trough rows. Additionally, a lidar scanned the horizontal plane above the trough field. In this study, we describe the high-resolution dataset characterizing the complex flow field and resulting structural loads. This first-of-its-kind dataset will enhance the understanding of wind loading on collector structures and will help in designing the next-generation solar collectors and photovoltaic trackers.

Transporting a research-based adolescent drug treatment into practice.

This article describes the key ingredients and processes in transporting an empirically supported, research-developed family therapy for adolescent drug abusers, Multidimensional Family Therapy (MDFT), into an intensive day treatment program. Using the same systems change principles that guide this treatment approach, the technology transfer process has been, from its inception, a collaborative, multidimensional, systemic intervention aimed at changing organizational structures, and attitudinal and behavioral patterns with multiple staff members at several levels of the program. This article describes: (1) the conceptual and empirical basis for these technology transfer efforts; (2) the technology being adapted and transferred; and (3) the critical events and processes that have shaped the transfer of MDFT into this program. We discuss this process and the outcomes thus far through the lens of Simpson's organizational change model and specify the implications of this experience for the expansion of current conceptualization of technology transfer.

Achieving community membership through community rehabilitation provider services: are we there yet?

Findings from an analysis of the characteristics and services of community rehabilitation providers (CRPs) in the early years of the 21st century are presented. Services provided by CRPs can be categorized along two dimensions: purpose (work, nonwork) and setting (facility-based, community). The number of individuals with disabilities present provides a third perspective for analysis. The majority of CRPs provided both work and nonwork services, and the majority of those that provide employment services offered both integrated and facility-based employment. Individuals with developmental disabilities were most likely to be supported in facility-based work (41%), followed by nonwork services (33%), and integrated employment (26%). Despite some changes in CRP characteristics, the goal of community membership has not yet been widely achieved.