Using Item-Response Analysis to Evaluate the Task-Demands of a Pictural-Response Based Test of Word Reading

While some children’s reading difficulties are a consequence of socio-economic factors and inadequate instruction, other children have extreme difficulties learning to read despite having adequate educational opportunity and adequate levels of intelligence. These children are classified under the Individuals with Disabilities Education Act (IDEA) as having a learning disability specific to reading (SLD-R). The identification of children with SLD-R is costly on time, personnel, and other school resources, and due to an insufficient number of resources generally available to schools, the methods implemented for identifying children are alarmingly inconsistent. The aim of the current study is to investigate the task demands of a recently developed computerized test of isolated word reading that was developed to address the resource barriers seen in schools. The task demands were explored by using both person and item characteristics to predict response-likelihood across items. An initial multiple logistic regression analyses revealed that a person’s phonological awareness and oral vocabulary abilities directly predicted the likelihood of success across items. Item characteristic variables and interactions terms between item characteristics were added in subsequent models. Overall, the analyses suggest that the word reading test most demands phonological ability and phonetics knowledge, particularly feedbackward phonetics. Results also show that task demands are significantly moderated by the linguistic parameters required as part of the test design. Limitations of the study are discussed and suggestions for test optimization are given

Religious Problem Solving and Methods of Control

This study examined the connections between religious problem-solving strategies and experiences of control, specifically an internal and external locus of control, God locus of control, and the illusion of control. In addition, it explored how these connections relate to psychological well-being. Undergraduates enrolled in psychology courses were recruited to participate in this study. They completed five scales and a computerized task. These scales consist of the Religious Problem-Solving Scale, the Locus of Control Scale, the Multidimensional Locus of Control Scale-God Control Revision (God control subscale), the Center for Epidemiologic Studies-Depressed Mood Scale, and the Self-Rating Anxiety Scale. The computerized task will be a light bulb illumination task. While there were no significant results found in regards to the illusion of control, the religious measures of God control and religious problem-solving were shown to be consistent with previous findings. This can prove beneficial to clinicians working with religious clients

Towards a More User Friendly Technique for Predicting Photovoltaic Energy Output

Several factors impact the power output from solar photovoltaic (PV) modules. Some are deterministic and controllable and others are uncontrollable (e.g., meteorological conditions), yet critical to performance. The objective of this paper is to assess the relationship between the meteorological variables and the power output of a mono silicon PV module using Multiple Linear Regression modelling. The approach involved exposing one mono-silicon photovoltaic module to the open atmosphere for a period of time and measuring the electrical energy output as a function of natural variation in the meteorological factors. A regression model for the power output was developed and significant variables identified. The model derived for this material grade of silicon tended to match the validation data more closely for clear skies, but not as accurate for times of cloud cover. Results of this study will provide useful design and application insight on critical factors that impact the energy capabilities of crystalline silicon PV modules. The analysis was simultaneously targeted to a nontechnical audience, so that home owners interested in installing photovoltaic arrays on their roofs can have a simpler, user friendly method by which to determine energy output for various atmospheric conditions

Exploring safety culture within inpatient mental health units:The results from participant observation across three mental health services

In Australia, acute inpatient units within public mental health services have become the last resort for mental health care. This research explored barriers and facilitators to safe, person-centred, recovery-oriented mental health care in these settings. It utilised participant observations conducted by mental health nurses in acute inpatient units. These units were located in three distinct facilities, each serving different areas: a large metropolitan suburban area in a State capital, a mid-sized regional city, and a small city with a large rural catchment area. Our findings highlighted that, in the three inpatient settings, nurses tended to avoid common areas they shared with consumers, except for brief, task-related visits. The prioritisation of administrative tasks seemed to arise in a situation where nurses lacked awareness of alternative practices and activities. Consumers spent prolonged periods of the day sitting in communal areas, where the main distraction was watching television. Boredom was a common issue across these environments. The nursing team structure in the inpatient units provided a mechanism for promoting a sense of psychological safety for staff and were a key element in how safety culture was sustained.</p

Remodeling of the neuromuscular junction precedes sarcopenia related alterations in myofibers

Several mechanisms contributing to the etiology of sarcopenia (age-related loss of muscle size) have been postulated. One of these attributes the loss of muscle mass to a preceding age-related denervation of myofibers. The aim of this study was to determine if signs of denervation were apparent at the neuromuscular Junction (NMJ) before fiber atrophy, or fiber type conversion could be documented, and to reveal if a muscle\u27s activity level impacts its sensitivity to age-related denervation. Plantaris and soleus muscles were obtained from young adult (10 months) and early aged (21 months) rats. Pre- and post-synaptic NMJ morphology was quantified with cytofluorescent staining of nerve terminal branches and endplate regions, respectively Myofiber profiles (fiber size and fiber type composition) were assessed with histochemical procedures Results show that in the lightly recruited plantaris, significant (P \u3c 0.05) signs of denervation were noted in aged rats, while the same muscles displayed no change in myofiber profile. In the heavily recruited soleus, however, there was little evidence of denervation, and again no alterations in myofiber profile These results indicate that age-related denervation occurs before myofiber atrophy, and that high amounts of neuromuscular activity may delay the onset of age-related denervation and sarcopenia (C) 2010 Elsevier Inc All rights reserved

Investigation of Magnesium Cation-proton Exchange with Transmembrane Electrostatically Localized Protons (TELP) at a Liquid-membrane Interface: Fundamental to Bioenergetics

The Lee transmembrane electrostatic proton localization (TELP) theory is a revolutionary scientific theory that has successfully explained decades long-standing quandary in the field of bioenergetics in regards to ATP synthesis in biological systems, specifically alkalophilic bacteria. This study provides experimental support for the TELP theory by further demonstrating evidence of a localized proton layer existing at the liquid-membrane interface in a simulated biological membrane apparatus. Whilst monovalent cations have been studied extensively, divalent cation exchange has not been studied experimentally. A previous study determined equilibrium constant for Na+ and K+ to exchange with localized H+ layer to be (5.07 ± 0.46) x 10-8 and (6.93 ± 0.91) x 10-8 respectively. We discovered that an equilibrium exchange occurs at 0.85 mM Mg2+ concentration. The findings here contributed to the successful determination of the equilibrium constant between Mg2+ and the localized H+ layer to be (1.56 ± 0.46) x 10-5. The equilibrium constant, much smaller than one, thus provides support for Lee’s TELP model since so many more Mg2+ in the bulk liquid phase that are required to even partially delocalize just a single H+ at the liquid-membrane interface. These results are relevant to further understand how water can act as a proton conductor for proton coupling energy transduction and the implications of different biological organisms’ salinity tolerance.https://digitalcommons.odu.edu/gradposters2022_sciences/1012/thumbnail.jp