Momentum 2020

A journal of undergraduate researchhttps://csuepress.columbusstate.edu/momentum/1007/thumbnail.jp

Child temperament as an influence on maternal emotion socialization in preschool-aged children

The primary purpose of this study was to examine the relation between child temperament and maternal emotion socialization practices (e.g., supportive/non-supportive). Data were gathered from mothers of 3- and 4-year-olds; 51 mothers participated anonymously via Facebook, and 33 were drawn from a larger study on emotion socialization. Mothers completed a series of questionnaires, including a demographics questionnaire; the Child Behavior Questionnaire (CBQ; Putnam & Rothbart, 2000) to assess maternal perception of child temperament, and the Coping with Children\u27s Negative Emotions Scale (CCNES; Fabes, Poulin, Eisenberg, & Madden-Derdich, 2002) to examine maternal responsiveness to children\u27s emotions. Pearson r correlation tests were conducted and yielded no significant findings. However, post-hoc analyses revealed when the data were examined separately for boys and girls; mothers\u27 ratings of soothability was significantly and positively related to (a) ratings of CCNES supportive -- anger and (b) ratings of CCNES supportive -- fear for boys, but not for girls. In addition, mothers\u27 rating of anger was significantly and positively related to CCNES non-supportive -- fear for girls but not for boys. The tests examining 3- and 4-year-olds separately revealed one significant finding: CBQ soothability was significantly and positively related to CCNES supportive -- fear for 3-year-olds, but the same significant result did not hold true for 4-year-olds. Thus, it is reasonable to conclude that child age and gender serve as influential factors of maternal emotion socialization practices (e.g., supportive/non-supportive)

The Necessity of Leisure and Physical Activity

Educational Objectives 1. Explain the value and benefit of physical and leisure activity across the lifespan, regardless of physical limitations. 2. Identify barriers to participation in physical and leisure activity. 3. Discuss strategies to engage and maintain physical and recreational activity participation

A contra-rotating marine current turbine on a flexible mooring : development of a scaled prototype

The contra-rotating marine current turbine concept developed by the Energy Systems Research Unit at the University of Strathclyde is aimed at extracting energy in a wide range of water depths by 'flying' a neutrally-buoyant device from a flexible, tensioned mooring. After successful proof of concept turbine trials, the development programme has moved on to investigate the performance of a scaled prototype of the complete system incorporating the turbine, submersible contra-rotating generator and mooring. The turbine/generator assembly has been tested in a towing tank, and the entire system is now undergoing sea trials. An investigation into turbine wake development (an area in which it is hoped that the contra-rotating turbine will have uniquely beneficial properties) has recently begun. Small single-rotor model turbines have been deployed in a flume. Trends observed so far are in accordance with those observed by other researchers

Contra-rotating marine current turbines : performance in field trials and power train developments

Development of a novel contra-rotating marine current turbine has been continuing at the University of Strathclyde. Continuous monitoring of blade bending loads during trials has enabled an investigation of blade-blade and blade-structure interactions. The former are a particular concern with a contra-rotating turbine, but there is now evidence to suggest that in normal operation these are relatively small. By contrast, blade-structure effects are clearly visible. A turbine complete with single-point mooring and submersible contra-rotating generator is presently being prepared for sea trials. Details of the machine and the test programme are described

Contra-rotating marine current turbines : single point tethered floating system - stabilty and performance

The Energy Systems Research Unit within the Department of Mechanical Engineering at the University of Strathclyde has developed a novel contra-rotating tidal turbine (CoRMaT). A series of tank and sea tests have led to the development and deployment of a small stand-alone next generation tidal turbine. Novel aspects of this turbine include its single point compliant mooring system, direct drive open to sea permanent magnet generator, and two contra-rotating sets of rotor blades. The sea testing of the turbine off the west coast of Scotland in the Sound of Islay is described; the resulting stability of a single-point tethered device and power quality from the direct drive generator is reported and evaluated. It is noted that reasonably good moored turbine stability within a real tidal stream can be achieved with careful design; however even quite small instabilities have an effect on the output electrical power quality. Finally, the power take-off and delivery options for a 250kW production prototype are described and assessed

Repetition-Induced Plasticity of Motor Representations of Action Sounds

Action-related sounds are known to increase the excitability of motoneurones within the primary motor cortex (M1), but the role of this auditory input remains unclear. We investigated repetition priming-induced plasticity, which is characteristic of semantic representations, in M1 by applying transcranial magnetic stimulation pulses to the hand area. Motor evoked potentials (MEPs) were larger while subjects were listening to sounds related versus unrelated to manual actions. Repeated exposure to the same manual-action-related sound yielded a significant decrease in MEPs when right, hand area was stimulated; no repetition effect was observed for manual-action-unrelated sounds. The shared repetition priming characteristics suggest that auditory input to the right primary motor cortex is part of auditory semantic representation

Repetition-Induced Plasticity of Motor Representations of Action Sounds

Action-related sounds are known to increase the excitability of motoneurones within the primary motor cortex (M1), but the role of this auditory input remains unclear. We investigated repetition priming-induced plasticity, which is characteristic of semantic representations, in M1 by applying transcranial magnetic stimulation pulses to the hand area. Motor evoked potentials (MEPs) were larger while subjects were listening to sounds related versus unrelated to manual actions. Repeated exposure to the same manual-action-related sound yielded a significant decrease in MEPs when right, hand area was stimulated; no repetition effect was observed for manual-action-unrelated sounds. The shared repetition priming characteristics suggest that auditory input to the right primary motor cortex is part of auditory semantic representation

Laminar Specificity of Intrinsic Connections in Broca's Area

Broca's area and its right hemisphere homologue comprise 2 cytoarchitectonic subdivisions, FDΓ and FCBm of von Economo C and Koskinas GN (1925, Die Cytoarchitektonik der Hirnrinde des erwachsenen Menschen. Vienna/Berlin [Germany]: Springer). We report here on intrinsic connections within these areas, as revealed with biotinylated dextran amine and 1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate tracing in postmortem human brains. Injections limited to supragranular layers revealed a complex intrinsic network of horizontal connections within layers II and III spreading over several millimeters and to a lesser extent within layers IV, V, and VI. Ninety percent of the retrogradely labeled neurons (n = 734) were in supragranular layers, 4% in layer IV, and 6% in infragranular layers; most were pyramids and tended to be grouped into clusters of approximately 500 μm in diameter. Injections involving layer IV revealed extended horizontal connections within layers I-IV (up to 3.7 mm) and to a lesser extent in layers V and VI. Injections limited to the infragranular layers revealed horizontal connections mainly limited to these layers. Thus, intrinsic connections within Broca's area display a strong laminar specificity. This pattern is very similar in areas FDΓ and FCBm and in the 2 hemisphere