543 research outputs found
Employers Beware: Degrees And Certifications Dont Guarantee The Quality Of An Information Technology Applicant
Due to the shortage of qualified information technology (IT) professionals and the supply of available IT jobs, a new industry has surfaced in search of profits. Many individuals and organizations seek to either bypass the traditional educational process or obtain fraudulent credentials with the purpose of securing a high paying IT job. This paper is discusses the trend of fraudulent credentials, their impact on organizations, and reasons why the quality of information technology job applicants cannot be guaranteed based on their degrees and/or certifications
Feeding Value of Pro-Sil Treated High-Moisture Ground Ear Corn with Two Groups of Crossbred Heifers
Pro-Sil, an ammonia-molasses-mineral suspension, has been shown to be a highly effective commercial additive for corn silage in studies at SDSU and other midwest universities. When added to corn silage at the time of ensiling, this product stimulates beneficial fermentation and increases the crude protein content of the silage, thereby reducing or eliminating the need for protein supplementation at the time of feeding. While Pro-Sil has been thoroughly tested with whole plant corn silage, no research has been conducted with ensiled high-moisture ear corn (HMEC). Since the crude protein content of HMEC is low compared to the needs of feedlot cattle, research is needed to evaluate economical methods of boosting the level of this critical nutrient. Thus, the major objective of this initial study was to compare the feedlot performance of cattle fed Pro-Sil treated HMEC or regular HMEC mixed with either a control or a urea-based protein supplement at the time of feeding. Both types of HMEC were ensiled in a plastic Silopress bag to examine the effectiveness of this storage method with HMEC. The relative performance of exotic and British crossbred yearling heifers was also studied in this trial
Effect of Length of Feeding Period on Performance of British and Exotic Crossbred Yearling Heifers
Seventy-two heifers were fed for 47, 61 and 75 days to determine the optimum feeding period for exotic cross and black baldy heifers. Average daily gains and feed conversions of the heifers were similar among treatments. Carcass weight, quality grade and yield grade increased with time on feed. Fat thickness, quality grade and yield grade increased faster for the black baldy heifers. Cost per pound of gain was similar for all treatments. The optimum weight at which to slaughter the black baldy yearling heifers appeared to be between 1000 and 1050 lb., both from a quality and economic view point. The optimum weight for slaughtering the exotic cross heifers was apparently not reached, as the last slaughter group was still gaining rapidly and efficiently with little increase in condition. The limited research conducted in this study indicates that a producer with mixed lots of cattle needs to be aware of the weight at which different types of cattle reach optimum condition. The feeder has greater flexibility in marketing the larger framed exotic cross type cattle as compared to the relatively smaller framed English breeds
Feedlot Performance of Growing Steer Calves on a High Roughage Ration Supplemented with a High Bypass or an All Natural Protein Supplement
This study was undertaken to compare a urea-based protein supplement containing meat and bone meal and dehydrated alfalfa as the primary by-pass protein source to a protein supplement containing soybean meal and sunflower meal as the protein sources
Effect of Length of Feeding Period of Performance of British and Exotic Crossbred Yearling Heifers
Producers very often question the additional length of time they should feed exotic-cross cattle as opposed to the feeding period required for the traditional British breeds of cattle. Also implied in this question in this question is the additional amount of feed needed for the exotic-cross animal to attain an optimum weight and an acceptable grade. This trial was conducted in an attempt to help answer these basic questions
Ubiquitin and AP180 Regulate the Abundance of GLR-1 Glutamate Receptors at Postsynaptic Elements in C. elegans
AbstractRegulated delivery and removal of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) glutamate receptors (GluRs) from postsynaptic elements has been proposed as a mechanism for regulating synaptic strength. Here we test the role of ubiquitin in regulating synapses that contain a C. elegans GluR, GLR-1. GLR-1 receptors were ubiquitinated in vivo. Mutations that decreased ubiquitination of GLR-1 increased the abundance of GLR-1 at synapses and altered locomotion behavior in a manner that is consistent with increased synaptic strength. By contrast, overexpression of ubiquitin decreased the abundance of GLR-1 at synapses and decreased the density of GLR-1-containing synapses, and these effects were prevented by mutations in the unc-11 gene, which encodes a clathrin adaptin protein (AP180). These results suggest that ubiquitination of GLR-1 receptors regulates synaptic strength and the formation or stability of GLR-1-containing synapses
Quantifying impacts of short-term plasticity on neuronal information transfer
Short-term changes in efficacy have been postulated to enhance the ability of
synapses to transmit information between neurons, and within neuronal networks.
Even at the level of connections between single neurons, direct confirmation of
this simple conjecture has proven elusive. By combining paired-cell recordings,
realistic synaptic modelling and information theory, we provide evidence that
short-term plasticity can not only improve, but also reduce information
transfer between neurons. We focus on a concrete example in rat neocortex, but
our results may generalise to other systems. When information is contained in
the timings of individual spikes, we find that facilitation, depression and
recovery affect information transmission in proportion to their impacts upon
the probability of neurotransmitter release. When information is instead
conveyed by mean spike rate only, the influences of short-term plasticity
critically depend on the range of spike frequencies that the target network can
distinguish (its effective dynamic range). Our results suggest that to
efficiently transmit information, the brain must match synaptic type, coding
strategy and network connectivity during development and behaviour.Comment: Accepted for publication in Phys Rev E. 42 pages in referee format, 9
figure
Bures distance between two displaced thermal states
The Bures distance between two displaced thermal states and the corresponding
geometric quantities (statistical metric, volume element, scalar curvature) are
computed. Under nonunitary (dissipative) dynamics, the statistical distance
shows the same general features previously reported in the literature by
Braunstein and Milburn for two--state systems. The scalar curvature turns out
to have new interesting properties when compared to the curvature associated
with squeezed thermal states.Comment: 3 pages, RevTeX, no figure
Predicting Chinese father involvement: Parental role beliefs, fathering self-efficacy and maternal gatekeeping
IntroductionDespite the well-established importance of positive father involvement for child adjustment, father involvement tends to be much lower compared to mother involvement. Furthermore, there are few empirical studies on Chinese fathers and their involvement in parenting. Given the importance of father involvement, it is necessary to examine the factors that may facilitate or hinder Chinese father involvement in parenting.MethodsThis study used survey methodology to examine the predictors of Chinese father involvement with their preschoolers. The sample consisted of 609 Chinese parent dyads in Mainland China.ResultsFathering self-efficacy and their beliefs about parental roles directly predicted father involvement in parenting. Maternal gate-opening had both direct and indirect associations with father involvement via fathers’ beliefs and fathering self-efficacy. Maternal gate-closing was not associated with father involvement.DiscussionThe findings suggest that fathers’ beliefs about parental roles, fathering self-efficacy, and maternal gate-opening are likely to play an important role in facilitating father involvement with their children. Family interventions and programs could target these modifiable factors to facilitate father involvement in Mainland China
Fidelity for Multimode Thermal Squeezed States
In the theory of quantum transmission of information the concept of fidelity
plays a fundamental role. An important class of channels, which can be
experimentally realized in quantum optics, is that of Gaussian quantum
channels. In this work we present a general formula for fidelity in the case of
two arbitrary Gaussian states. From this formula one can get a previous result
(H. Scutaru, J. Phys. A: Mat. Gen {\bf 31}, 3659 (1998)), for the case of a
single mode; or, one can apply it to obtain a closed compact expression for
multimode thermal states.Comment: 5 pages, RevTex, submitted to Phys. Rev.
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