Neutrons transition densities for the 2+−8+2^+-8^+ multiplet of states in 90^{90}Zr

The neutron transition densities of the $2^+-8^+$ levels in $^{90}$Zr were extracted in the process of analysing ({\bf p},p') scattering at 400 Mev. Its comparison with the proton transition densities for these levels was undertaken. The radial shapes of the experimental neutron and proton transition densities for each state were found to be different.Comment: 9 pages, 4 figure

Information Systems Appraisal and Coping: The Role of User Perceptions

Organizations increasingly rely on complex information systems (IS) to preserve and enhance competitive advantage. Prior work has shown that these IS are often underutilized, prompting researchers and practitioners to seek out better explanations to account for IS use behaviors. Coping theory has recently emerged as a promising foundation for understanding users’ post-adoptive reactions to IS. This paper takes a first step toward integrating theories of IS adoption and use with coping theory by examining how adoption-related IS perceptions influence individual-level post-adoptive IS appraisal. Survey data collected from IS users at a university health center indicate that performance and effort expectancies surrounding use of the IS strongly influence primary IS appraisal (judgments of what is at stake as a result of the IS), while the presence of facilitating conditions relates to secondary IS appraisal (judgments of what can be done in response to the IS)

A panel model for predicting the diversity of internal temperatures from English dwellings

Using panel methods, a model for predicting daily mean internal temperature demand across a heterogeneous domestic building stock is developed. The model offers an important link that connects building stock models to human behaviour. It represents the first time a panel model has been used to estimate the dynamics of internal temperature demand from the natural daily fluctuations of external temperature combined with important behavioural, socio-demographic and building efficiency variables. The model is able to predict internal temperatures across a heterogeneous building stock to within ~0.71°C at 95% confidence and explain 45% of the variance of internal temperature between dwellings. The model confirms hypothesis from sociology and psychology that habitual behaviours are important drivers of home energy consumption. In addition, the model offers the possibility to quantify take-back (direct rebound effect) owing to increased internal temperatures from the installation of energy efficiency measures. The presence of thermostats or thermostatic radiator valves (TRV) are shown to reduce average internal temperatures, however, the use of an automatic timer is statistically insignificant. The number of occupants, household income and occupant age are all important factors that explain a proportion of internal temperature demand. Households with children or retired occupants are shown to have higher average internal temperatures than households who do not. As expected, building typology, building age, roof insulation thickness, wall U-value and the proportion of double glazing all have positive and statistically significant effects on daily mean internal temperature. In summary, the model can be used as a tool to predict internal temperatures or for making statistical inferences. However, its primary contribution offers the ability to calibrate existing building stock models to account for behaviour and socio-demographic effects making it possible to back-out more accurate predictions of domestic energy demand

Sunshine Of Mine

https://digitalcommons.library.umaine.edu/mmb-vp/2982/thumbnail.jp

Igniting Resilience During Critical Times: Reflections of Women Superintendents

This qualitative study sought to explore the perceptions of women school superintendents in K -12 public schools in Texas about the challenges they face as leaders and how they endure these impactful challenges, particularly during critical times such as the COVID-19 pandemic. Using Polidore’s Resilience Theory (2004) as the theoretical framework, the study sought to determine which of the nine resilience qualities, either innately possessed or through acquisition over time, helped to sustain the women superintendents during adverse situations associated with the highest level of leadership in a school district. The nine qualities of resilience include: religion, flexible locus of control, optimistic bias, autonomy, commitment, change, positive relationships, education viewed as important, and efficacy. Implications from this study are far-reaching and note-worthy for any position in educational leadership. The results from this study may positively enhance the experiences, retention, sustainability, effectiveness, and longevity of both women and men in one of the most important roles in a school district - the superintendency. Key words: resilience, women superintendents, women educational leaders, critical times, COVID-19 pandemic, Resilience Theor

Ogden Type I to III tibial tubercle fractures in skeletally immature patients: Is routine anterior compartment fasciotomy of the leg indicated?

PURPOSE: Determine the frequency of compartment syndrome of the leg after displaced, operatively treated modified Ogden I to III tibial tubercle fractures (TTFxs), evaluate the preoperative assessment and use of advanced imaging, and need for prophylactic fasciotomies. METHODS: Retrospective analysis of operatively treated, displaced modified Ogden I to III TTFxs, at our level 1 paediatric trauma centre between 2007 and 2019. Modified Ogden Type IV and V fracture patterns were excluded. Fracture patterns were determined by plain radiographs. RESULTS: There were 49 modified Ogden I to III TTFxs in 48 patients. None had signs nor symptoms of vascular compromise, compartment syndromes or impending compartment syndromes preoperatively. In all, 13 of the 49 fractures underwent anterior compartment fasciotomy at surgery; eight of the 13 had traumatic fascial disruptions, which were extended surgically. All incisions were primarily closed. There were no instances of postoperative compartment syndromes, growth arrest, leg-length discrepancy or recurvatum deformity postoperatively. All patients achieved radiographic union and achieved full range of movement. CONCLUSION: The potentially devastating complications of compartment syndrome or vascular compromise following TTFx did not occur in this consecutive series of patients over 12 years. The presence of an intact posterior proximal tibial physis and posterior metaphyseal cortex (Modified Ogden TTFx Type I to III) may mitigate the occurrence of vascular injury and compartment syndrome. Plain radiographs appear appropriate as the primary method of imaging TTFxs, with use of advanced imaging as the clinical scenario dictates. Routine, prophylactic fasciotomies do not appear necessary in Ogden I to III TTFxs, but should be performed for signs and symptoms of compartment syndrome. LEVEL OF EVIDENCE: Level IV