Optical Properties of Quantum-Dot-Doped Liquid Scintillators

Semiconductor nanoparticles (quantum dots) were studied in the context of liquid scintillator development for upcoming neutrino experiments. The unique optical and chemical properties of quantum dots are particularly promising for the use in neutrinoless double beta decay experiments. Liquid scintillators for large scale neutrino detectors have to meet specific requirements which are reviewed, highlighting the peculiarities of quantum-dot-doping. In this paper, we report results on laboratory-scale measurements of the attenuation length and the fluorescence properties of three commercial quantum dot samples. The results include absorbance and emission stability measurements, improvement in transparency due to filtering of the quantum dot samples, precipitation tests to isolate the quantum dots from solution and energy transfer studies with quantum dots and the fluorophore PPO.Comment: version 2, minor text update

Exploring parenting self-efficacy among parents of children In residential treatment: evaluating a combined online psychoeducational intervention

When children return home from residential treatment for behavioral challenges, continuity of care is clinically advised and empirically supported. If parents lack the skills to support this transition, a child’s treatment gains may be at risk. Parenting difficulties can initiate oppositional and avoidant behaviors in children, and if sustained, damage the parent-child relationship, leading to poor child outcomes. Offering parent training during a child’s residential treatment may increase parent self-efficacy and use of the training in support of a child’s transition home. A Northeastern US Residential Treatment Program (RTP) annually provides short-term residential treatment for children (ages 6-18), and therapeutic supports to the parents of these children during their milieu care. RTP’s new online parenting program was evaluated across three separate but related studies, exploring in Phase 1) perceived barriers to online program usability, Phase 2) how video dosage was associated with changes in parenting self-efficacy and parenting stress, and Phase 3) through the lens of family routines, what were the longer-term effects of the online program. Results from Phase 1 suggested that parents with lower technology familiarity may need ongoing support to successfully complete online training; adding digital prompts helped parents to autonomously navigate the online program. Phase 2 results indicated that parenting self-efficacy increased minimally while children were away, and decreased when children returned home; an inverse effect was found for parenting stress. Phase 3 revealed limited application of the online parent training in post-residential family routines; parent training was shared internationally within parenting social networks, though virtually no videos were watched once children had transitioned home. Similar parenting programs using the Fogg Behavior Model may consider nudging parents during natural surges in parent motivation to prolong recently initiated therapeutic benefits during post-residential home aftercare

Alien Registration- Emack, Winslow S. (Presque Isle, Aroostook County)

https://digitalmaine.com/alien_docs/33817/thumbnail.jp

Burbank Entertainment Center Summary Observations

This document summarizes the observations of the Burbank Entertainment Center project meeting held by the economic planning team on Friday, February 19, 1988 at WDI. The meeting aimed to reconcile sizing and economics for the various components proposed for inclusion in the project, and produced an overview assessment of the project, an examination of the design and analytical work conducted, and the implications of the Burbank Center findings on the Disney Center concept. The document includes the first draft and final copy. Handwritten 202D C (Report no. 202, Subject category D, Restriction code C) on p. 10

Adaptive structures for whole-life energy savings

The design methodology described in this paper takes a substantial shift from conventional methods. Traditionally sizing is based on the worst expected load scenario. By contrast to this conventional passive approach the method presented here replaces passive member strategically with active elements (actuators) which are only activated when the loads reach a certain threshold. The structure can withstand low level of loads passively. Above the threshold, actuation comes in to allow the structure to cope with high but rare loading scenarios. Active control introduces operational energy consumption in addition to the energy embodied in a passive design. In this paper we use this dual design to minimize the overall energy required by the structures. This methodology has been used on a simple truss structure and it was showed that it allows significant weight saving compared to conventional passive design. We extend the application of the methodology to a more complex 3D structure. It is confirmed that an optimum activation threshold exists that leads to design that minimises the total energy of the structure. Compared to an optimised passive design we show that the total energy saving is 10-fold

Designing adaptive structures for whole life energy savings

Designing structures with minimal environmental impact is emerging as a seriou concern in the construction sector. Conventional structural design practice involves designing first for strength, followed by secondary checks on deflections and other serviceability limits states. If these limits are exceeded, the con-ventional solution has been to add material to increase stiffness. When the design is governed by unpredicta-ble events such as fluctuating loads, strong wind storms or earthquakes, the structure is effectively overde-signed for most of its working life. This paper presents a methodology to design adaptive structures that minimize the whole life energy consumption. The methodology is illustrated on plane pin-jointed trusses, both determinate and indeterminate. Strategically placing actuators allow the internal flow of forces to be ho-mogenized and displacements to be controlled. The actuators only start working when the loads reach a cer-tain threshold. Below this threshold, the structure resists loads mainly passively thereby limiting significantly the operational energy used. It was found that both indeterminate and determinate topologies bring substantial energy savings up to 70% of the total energy

Seeded Native Shrub Establishment on Disturbed Sites in Southwestern Wyoming

Critical wildlife habitat supporting mule deer, antelope, and sage grouse in high elevation rangeland and sagebrush ecosystems of southwest Wyoming is threatened by an expanding population and energy exploration and development. Our objective was to evaluate native shrub species establishment for restoration after disturbance. In October 2005, on a well-pad disturbance, 16 accessions of 12 native shrub species were drill-seeded in single species plots in a randomized complete block design with four replications. Also, two seed mixtures (Bridger and Shell) of grass, forb, and shrub species were broadcast- or drill-seeded, and one seed mixture (Shell) was hydro-seeded to separate areas outside of the replicated plots. Densities were sampled in September 2007. By 2007, nine of the 16 shrub accessions established in the replicated plots. Atriplex aptera had the greatest establishment at six plants/m2 followed by Atriplex canescens at four plants/m2. Establishment of the other seven accessions was similar and ranged from two to 0.4 plants/m2. Where the Bridger mix was broadcast seeded, Artemisia tridentata ssp. wyomingensis, Atriplex aptera, and Krascheninnikovia lanata establishment was estimated at 10,000, 6,770, and 1,120 plants/ha, respectively. Where drill seeded, establishment of the three shrubs was 0, 4,480, and 2,240 plants/ha, respectively. Where the Shell mix was broadcast seeded, Artemisia tridentata ssp. wyomingensis, Krascheninnikovia lanata, and Atriplex canescens establishment was estimated at 21,300, 4,500, and 4,500 plants/ha, respectively. Where drill seeded, establishment for the three species was 7,800, 10,000, and 1,100 plants/ha, respectively. Where the Shell mix was hydro-seeded, only Krascheninnikovia lanata established at 1,100 plants/ha