Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 94 for “"fixed-time"”.
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On Direct Fixed-Time Optimization of Invertible Systems
Made available in DSpace on 2014-12-04T21:03:39Z (GMT). No. of bitstreams: 1 6402906.pdf: 1676440 bytes, checksum: bc3f9238635ccb222d3c924ed8bb43f4 (MD5) Previous issue date: 1963
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An Evaluation of the Effects of Fixed-Time Schedules on Response Maintenance
… schedules of reinforcement (e.g., fixed-time schedules) have typically been shown to decrease the rate of responding. However, researchers have suggested that responses may maintain under response-independent schedules, although it is currently unclear as to what mechanisms are …
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Immediate and subsequent effects of fixed-time food presentations on automatically maintained mouthing.
Several studies have demonstrated that fixed-time (FT) schedules of stimulus delivery can function to reduce a variety of behaviors. The purpose of this study was to evaluate the immediate and subsequent effects of FT food deliveries on mouthing. In Phase 1, a preference assessment showed that …
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Delay, Stop and Queue Estimation for Uniform and Random Traffic Arrivals at Fixed-Time Signalized Intersections
… residual queue at the end of evaluation time. A consistency was found between the INTEGRATION model and the horizontal shock wave model predictions with respect to the maximum extent of queue for both undersaturated and oversaturated signalized intersections. Finally, the dissertation …
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An 8-Step Program: Shaping and Fixed-Time Food Delivery Effects on Several Approximations and Undesired Responses in Goats.
… in Gainesville, Texas were used for the study. A fixed-time 15 s (FT-15 s) was used during the baseline conditions, to examine the effects of response contingent and response-independent food deliveries, as well as to examine what preliminary steps might not necessarily have to be shaped. All 3 …
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Use of Triptorelin Acetate for Inducing Ovulation and Facilitating Fixed Time Artificial Insemination of Sows Weaned on Small-Scale and Niche Market Pig Farms
Developing a single fixed-time artificial insemination (FTAI) protocol would benefit small-scale and niche market pork producers by decreasing semen costs and labor associated with detection of estrus. The objective of this study was to test the efficacy of an artificial insemination (AI) breeding …
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Evaluation of the 7 and 7 synch protocol for control of the estrous cycle among beef cows prior to fixed-time artificial insemination with sex-sorted or conventional semen
… release (CIDR[copyright]) protocols prior to fixed-time artificial insemination (FTAI) of beef cows with conventional or sex-sorted semen. Cows (n = 1,538) were blocked based on age and days postpartum (DPP) and randomly assigned to protocol and semen type. Cows assigned to 7-day CO-Synch + …
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Presynchronizing injections of prostaglandin F[subscript]2alpha[subscript] or prostaglandin F[subscript]2alpha[ subscript + Gonadotropin-releasing hormone before a fixed time artificial insemination CO-Synch + CIDR program in suckled beef cows
… on d -3, and 100 mcg GnRH i.m. [GnRH-2] and timed AI [TAI] on d 0) in suckled beef cows. This hypothesis was tested in 2 experiments, in which cows were treated with either PG or PG + GnRH before initiating a control CO-Synch + CIDR program to increase the proportion of cows starting the …
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Optimal control of impulsive systems using adaptive critic based neural networks
… tools for the optimal control synthesis of fixed-time and variable-time impulsive systems. Necessary conditions for optimality have been derived for a fixed-time and a variable-time impulsive system using the calculus of variations method. Properties of the costates and the states relation …
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European and American Option Pricing with a Geometric Markov Renewal Process Underlying Asset Model
… and American options. We present results on Fixed Time Increments GMRP, with a derivation of a method for a limiting case of Fixed Time Increments GMRP (applicable to perpetual American options), complete with MATLAB implementations. We also present a MATLAB implementation for the pricing of …
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Perturbative Check of the Action and Energy Lattice Sum Rules
… the expectation value of the action to one fixed time slice is discussed. The energy sum rule is checked perturbatively up to next-to-leading order and shown to be satisfied with good numerical accuracy. The various contributions to the quark-antiquark potential are analyzed, and the …
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An Evaluation of the Use of a Time-in Procedure to Increase On-task Behavior
… from those teachers (Walker & Rankin, 1983). Time-in procedures have been found to be an effective treatment for reducing escape-maintained behavior (Williams, 1977; Brown, 2012). There has been no research evaluating the effectiveness of a time-in procedure for increasing on-task behavior. …
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Comparison of controlled internal drug release (CIDR)-based protocols to synchronize estrus and facilitate artificial insemination (AI) in postpartum beef cows
… estrus and ovulation enable producers to utilize fixed-time AI (FTAI), thus reducing time and labor required to detect estrus. The 7-d Select Synch and CO-Synch + CIDR protocols provide an efficient and effective means to synchronize estrus in postpartum beef cows. Recently a 5-d Select Synch and …
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Effect of the timing of OvuGel administration on reproductive performance in gilts sycnhronized for estrus
… this thesis was to evaluate the effects of the time of OvuGel® administration on the timing of estrus and ovulation and fertility results in gilts synchronized for estrus by administering Matrix® for 14 d. Insemination must occur near the time of ovulation to achieve high fertility results, …
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Simulation of pedestrian effects on vehicle delay at signalized street intersections
… two-lane by four-lane street intersections with fixed-time signal cycles. Two intersections, operating under different conditions, were simulated at various pedestrian and vehicle flow volumes. Possible warrants, based on simulation output, for the inclusion of a separate pedestrian signal in the …
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A biochemical study of some of the hydrolases to be found in the latex of the pawpaw, Carica papaya L
… of latex from the same growing fruit at fixed time intervals : analysis of the samples shows the changes in the yields of latex and enzyme content during the six months that the fruit takes to ripen.
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