654 research outputs found
UA12/2/1/2 Longtime Hilltopper Remembers Past Presidents
College Heights Herald article by Charlie Lanter regarding Edgar Stansbury. A timeline of Stansbury\u27s life and a bibliography are included
The Economic Model of Intercollegiate Athletics and Its Effects on the College Athlete Educational Experience
The financial growth and popularity of intercollegiate athletics presents unique and challenging opportunities to institutions of higher education. Intercollegiate athletics, specifically men’s basketball and football, elicit considerable media attention and publicity for these institutions. Yet, the current economic model of intercollegiate athletics engenders challenges to the academic welfare of athletes in both revenue and nonrevenue sports. This paper examines the challenges athletes incur as a result of the current economic model of intercollegiate athletics, and it poses several thought provoking questions to continue the debate on athletic reform
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Is Conditioned Reinforcement by Observation a Verbal Behavior Developmental Cusp?
In 2 studies, I tested the effects of an observational conditioning-by-denial intervention on the demonstration of conditioned reinforcement by observation, observational performance, and observational acquisition of new operants. In Experiment 1, I selected 6 children educationally classified with autism spectrum disorder and multiple disabilities. The participants were 2 females and 4 males who ranged from 5.5-8.2 years old. Participants were selected from one school that implemented a Comprehensive Application of Behavior Analysis to Schooling (CABAS®) approach. I conducted a series of pre-intervention reinforcer assessments that tested 1) the conditioned reinforcement effects of known reinforcing stimuli (edibles) and non-preferred stimuli (binder clips) on a mastered task, and 2) the reinforcement effects of non-preferred stimuli (binder clips) on 3 learning tasks across each participant. These reinforcer assessment probes showed all participants’ rates increased when a known reinforcer (edibles) was delivered compared to non-reinforcing stimuli (binder clips) on the mastered task. Participants did not demonstrate learning when delivered non-preferred stimuli (binder clips) for correct responses on learning tasks. Following the pre-intervention reinforcer assessments I conducted probes for a) conditioned reinforcement by observation b) observational performance and c) observational acquisition of new operants. Pre-intervention probes showed all participants did not demonstrate conditioned reinforcement by observation, or observational acquisition of new operants and 5 out of 6 participants did not demonstrate observational performance. The independent variable was an observational conditioning-by-denial intervention. During the intervention the participant was paired with a known peer, and both children were separated by a partition but were able to see and hear the researcher but not each other. The only thing both the participant and peer could see were each other’s transparent cups, which were attached with Velcro® to each child’s desk. Both participants were given a mastered task. Each time the peer emitted a response the experimenter delivered neutral stimuli (binder clips) into his/her transparent cup, in view of the participant. The intervention continued until the target participant vocally manded/requested for the neutral stimuli and/or made a physical attempt to gain access to the stimuli one or more times across two consecutive sessions. Post-intervention data suggest that neutral stimuli (binder clips) became conditioned reinforcers for mastered and learning tasks as function of the intervention for all 6 participants. Responses to denial of non-preferred stimuli delivered to a peer (conditioned reinforcement by observation), observational performance, and observational acquisition of new operant responses increased in 4 out of 6 participants who did not respond during pre-intervention probes. In Experiment 2, I sought to determine if conditioned reinforcement by observation is a verbal behavior developmental cusp. Experiment 2 was a replication of Experiment 1, with two different reinforcer assessments that tested: 1) the conditioned reinforcer effects of neutral stimuli when the participant was alone and 2) the conditioned reinforcer effects of neutral stimuli when the participant observed a peer play with neutral stimuli. Four males educationally classified with autism spectrum disorder and speech and language impairments participated in Experiment 2. Post-intervention data suggest that neutral stimuli (metal washers, s-hooks, spoon shelf supports) became conditioned reinforcers during the individual and peer reinforcer assessments as a function of the intervention for all 4 participants. Responses to denial of non-preferred stimuli delivered to a peer (conditioned reinforcement by observation), observational performance, and observational acquisition of new operant responses increased across all 4 participants who did not respond during pre-intervention probes. The results of both experiments suggest that a single intervention can establish all three types of observational learning. The results from Experiment 2 confirm that conditioned reinforcement by observation is a verbal behavior developmental cusp
A Study of Current Noise in Cokes, Carbons, and Graphites
This study shows that current noise occurs when there is a deviation of Ohm\u27s Law, i.e., when the applied voltage and resultant current are no longer proportional. Since most, and perhaps all, cases of occurrence of frequency and current dependent noise are associated with non-linear devices, e.g., semiconductors, diodes, vacuum tubes, insulators near breakdown, it seems reasonable to seek a mechanism involving non-linearity as an important feature. Even though it may not be justifiable to seek a single mechanism to explain all of the occurrences of current noise, nevertheless, the fact that in cases studied and discussed herein the non-linearity is not a layer phenomenon (as in semiconductor devices), nor a space-charge effect (as in vacuum tube devices), but simply a result of heating the sample does seem to point to some single underlying cause
Effectiveness of Combination Solvent and Aqueous Deinking of Waxed and Printed Papers
Investigation of badly contaminated paper as a source of secondary fiber is an area of growing interest to the paper industry. A process that can remove contaminates from high gloss, printed, waxed, and/ or polycoated specialty paper is the experimental part of this thesis.
A brief overview of major factors involved in secondary fiber recycling will be discussed, such as economic factors, new demands, and pressures placed on the recycling industry. (1, 2, 3)
Different methods of contaminate removal and deinking techniques are discussed with a listing of advantages and disadvantages of each. (The methods include principles involved in absorbing ink particles on hydrophobic collectors, (7, 11) removal of wax and poly, (9, 10, 11, 12, 15) and handling the problem of other contaminates such as grease, wet strength resins, asphalt and/or similar materials. (8, 12, 16) Problems caused by synthetic coatings and adhesives are also briefly discussed.(6) The relatively new concept of ultrasonic deinking will be mentioned. (13) Laboratory methods of testing and evaluating the quality of deinking system is also included. (14)
The experimental part of this thesis is based on the literature cited, and will investigate the efficiency of a combination solvent-aqueous deinking method on printed waxed papers. The efficiency will be evaluated by brightness measurements and speek analysis, with a brief look at yields
Improving Mental Health in High-Achieving Student Populations
This group curriculum seeks to encourage student establishment of more realistic expectations, more consistent use of adaptive coping skills, and reduced levels of anxiety and stress among high-achieving students. Potential protective factors and interventions are drawn from counseling theories and case studies where high-achieving students have found support and success. The curriculum incorporates psychological concepts such as self-constructs, emotion management, thought processes, and the negative effects of chronic stress. A here-and-now or process-focused approach forms the foundation for each lesson and students learn to use adaptive coping skills with the support of a professional school counselor. Parents have an opportunity for education and students learn how to communicate their feelings to individuals who may be positioned to support students in high-stress times.California State University, Northridge. Department of Educational Psychology & Counseling
Bacteria Present in Carotid Arterial Plaques Are Found as Biofilm Deposits Which May Contribute to Enhanced Risk of Plaque Rupture
Atherosclerosis, a disease condition resulting from the buildup of fatty plaque deposits within arterial walls, is the major underlying cause of ischemia (restriction of the blood), leading to obstruction of peripheral arteries, congestive heart failure, heart attack, and stroke in humans. Emerging research indicates that factors including inflammation and infection may play a key role in the progression of atherosclerosis. In the current work, atherosclerotic carotid artery explants from 15 patients were all shown to test positive for the presence of eubacterial 16S rRNA genes. Density gradient gel electrophoresis of 5 of these samples revealed that each contained 10 or more distinct 16S rRNA gene sequences. Direct microscopic observation of transverse sections from 5 diseased carotid arteries analyzed with a eubacterium-specific peptide nucleic acid probe revealed these to have formed biofilm deposits, with from 1 to 6 deposits per thin section of plaque analyzed. A majority, 93%, of deposits was located proximal to the internal elastic lamina and associated with fibrous tissue. In 6 of the 15 plaques analyzed, 16S rRNA genes from Pseudomonas spp. were detected. Pseudomonas aeruginosa biofilms have been shown in our lab to undergo a dispersion response when challenged with free iron in vitro. Iron is known to be released into the blood by transferrin following interaction with catecholamine hormones, such as norepinephrine. Experiments performed in vitro showed that addition of physiologically relevant levels of norepinephrine induced dispersion of P. aeruginosa biofilms when grown under low iron conditions in the presence but not in the absence of physiological levels of transferrin. IMPORTANCE The association of bacteria with atherosclerosis has been only superficially studied, with little attention focused on the potential of bacteria to form biofilms within arterial plaques. In the current work, we show that bacteria form biofilm deposits within carotid arterial plaques, and we demonstrate that one species we have identified in plaques can be stimulated in vitro to undergo a biofilm dispersion response when challenged with physiologically relevant levels of norepinephrine in the presence of transferrin. Biofilm dispersion is characterized by the release of bacterial enzymes into the surroundings of biofilm micro-colonies, allowing bacteria to escape the biofilm matrix. We believe these enzymes may have the potential to damage surrounding tissues and facilitate plaque rupture if norepinephrine is able to stimulate biofilm dispersion in vivo. This research, therefore, suggests a potential mechanistic link between hormonal state and the potential for heart attack and stroke
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