Stress and Anxiety Levels of Exercising Versus Sedentary Male Adults

The purpose of this study was to compare stress and anxiety levels of exercising and sedentary male adults at Eastern Illinois University in Charleston, Illinois. Forty-four male adults were selected as subjects for the study. Thirty-two subjects were chosen from an Adult Fitness group and comprised the exercising group. The sedentary group, chosen at random, consisted of twelve staff members who were not currently in a regular exercise program. The Anxiety Scale Questionnaire developed by the Institute for Personality and Ability Testing (IPAT) was used. Using a provided answer key, a raw score was obtained for each participant. Raw scores were also computed for both groups in each of the five sections of the test. Mean scores, standard deviations, and t-tests were calculated for each of the five sections. The t-score of 2.021 was needed to determine statistical significance at the .05 level and forty-two degrees of freedom. The sedentary group was shown to be significantly more anxious, more apprehensive, more tense, more emotionally unstable and more suspicious than the exercising group. The non-exercisers also showed less self-control. The study concluded that exercising male adults showed overall less tension and anxiety than sedentary male adults at Eastern Illinois University

Proposal to modify the mixing system for hydrosolution\u27s processing plant.

A processing facility in Trenton, Ky owned by HydroSolutions is in need of modernization in order to increase efficiency in the mixing process, improve the safety of the facility, and give the facility the ability to expand in the future. The main idea of HydroSolution’s processing strategies is based on a lean manufacturing policy, and as such this zero waste mentality must be maintained after the modifications have been completed. The plant produces a number of chemical combinations that are provided mainly to rendering facilities, as well as other companies in order to remove odors and unwanted chemicals from air streams. For the facility to accomplish the goals listed previously, modifications to existing equipment as well as the addition of new equipment have been recommended. The mixing station within the facility will be refabricated, utilizing semi-permanent vessels to hold raw material, as well as involve two larger storage vessels outside for the raw materials that are used more often. Pumps will be installed to load and unload every vessel. The entire mixing system will switch from a gravity driven system using manually operated valves to a pump driven system that utilizes automatic valves. A new software system will be implemented to connect the valves with flow meters in order to mix the product combinations accurately and automatically. The entire system will be designed to create the smallest amount of waste possible in order to fulfill the demands of HydroSolutions. These modifications will greatly improve the efficiency of the facility. A process that would usually be done by two or more operators manually will now be replaced by a process that will be done automatically by one operator. The amount of possible leaks and drip sites on the mixing station has been reduced, increasing the safety and cleanliness within the facility. With these new modifications, the facility will be able to produce more product than ever before, and do so while wasting little to no raw material

L6 skeletal muscle cells have functional V1-vasopressin receptors coupled to stimulated inositol phospholipid metabolism

AbstractThe effects of vasopressin and related peptides upon the rat skeletal muscle cell line, L6, have been examined. No effects upon cellular cyclic AMP levels were found indicating that L6 cells possess no functional V2-vasopressin receptors. Vasopressin and its analogues did, however, stimulate the rapid and dose-dependent accumulation of inositol phosphates. This effect and the rank order of potency of vasopressin analogues demonstrate the presence of functional V1-vasopressin receptors upon L6 cells. These results suggest that the L6 line may be a useful model for vasopressin effects upon skeletal muscle metabolism

A comparative analysis of proficiency aviator skill, knowledge, and satisfaction

Data reflecting the knowledge, skill, and satisfaction of aviators in combat readiness training (CRT) flight status, were collected. The aviator sample consisted of one group flying the T-1A aircraft at a rate of 4-hours per month and another flying 8-hours per month. The data collection methods are described, and the results and conclusions from a comparative analysis are presented. (Author)http://archive.org/details/comparativeanaly00schrN

What are the consequences of ignoring attributes in choice experiments? An application to ecosystem service values

This paper investigates the sensitivity of choice experiment values for ecosystem services to “attribute non-attendance”. We consider three cases of attendance, namely that people may always, sometimes or never pay attention to a given attribute in making their choices. This allows a series of models to be estimated which address the following questions: To what extent do respondents attend to attributes in choice experiments? What is the impact of alternative strategies for dealing with attribute non-attendance? Can respondents self-report non-attendance? Do respondents partially attend to attributes, and what are the implications of this for willingness to pay estimates? Our results show that allowing for the instance of “sometimes attending” to attributes in making choices offers advantages over methods employed thus far in the literature

Attenuation of agonist-induced desensitization of the rat substance P receptor by progressive truncation of the C-terminus

AbstractWe have investigated the C-terminal tail of the rat substance P receptor (SPR) as a domain essential for agonist-induced desensitization. Four progressively shorter mutants, using premature termination in the C-terminus, were constructed and compared with the unaltered SPR using ectopic expression of wild-type and mutant receptors in Xenopus oocytes. These mutants were designated D16, D47, D70 and D96 with 16, 47, 70 and 96 amino acids residues deleted from the tail, respectively. Wild type SPR, D16 and D47 exhibited normal current responses when challenged with substance P, but D70 and D96 had reduced maximal current responses (70% and 5% of wild type SPR, respectively). D70, however, exhibited substantial resistance to substance P-induced desensitization in that 55%, versus 8% for wild type SPR, of the peak current of the first response was preserved on second challenge with substance P. Therefore, a domain from residues 338 to 360 of the rat SPR, though not necessary for the functional activity of the receptor, plays an essential role in agonist-induced desensitization

Do unbalanced data have a negative effect on LDA?

For two-class discrimination, Xie and Qiu [The effect of imbalanced data sets on LDA: a theoretical and empirical analysis, Pattern Recognition 40 (2) (2007) 557–562] claimed that, when covariance matrices of the two classes were unequal, a (class) unbalanced data set had a negative effect on the performance of linear discriminant analysis (LDA). Through re-balancing 10 real-world data sets, Xie and Qiu [The effect of imbalanced data sets on LDA: a theoretical and empirical analysis, Pattern Recognition 40 (2) (2007) 557–562] provided empirical evidence to support the claim using AUC (Area Under the receiver operating characteristic Curve) as the performance metric. We suggest that such a claim is vague if not misleading, there is no solid theoretical analysis presented in Xie and Qiu [The effect of imbalanced data sets on LDA: a theoretical and empirical analysis, Pattern Recognition 40 (2) (2007) 557–562], and AUC can lead to a quite different conclusion from that led to by misclassification error rate (ER) on the discrimination performance of LDA for unbalanced data sets. Our empirical and simulation studies suggest that, for LDA, the increase of the median of AUC (and thus the improvement of performance of LDA) from re-balancing is relatively small, while, in contrast, the increase of the median of ER (and thus the decline in performance of LDA) from re-balancing is relatively large. Therefore, from our study, there is no reliable empirical evidence to support the claim that a (class) unbalanced data set has a negative effect on the performance of LDA. In addition, re-balancing affects the performance of LDA for data sets with either equal or unequal covariance matrices, indicating that having unequal covariance matrices is not a key reason for the difference in performance between original and re-balanced data