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 28 for “"fixed interval"”.
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Fixed -interval timeout from avoidance with humans
On fixed-interval (FI) schedules of reinforcement, humans and other animals often have different response patterns. For example, the pattern typically associated with animals is the scallop: a pause followed by a gradual acceleration in responding. Humans generally show terminal-minimum (i.e., …
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Fixed-interval performance as a function of previous temporal discrimination training
… was available according to a variable-interval 60-s schedule for pecking one key (Key 1) during the first part of the interval and pecking another key (Key 2) during the second part of the interval. In the Fixed session, reinforcement availability switched from Key 1 to Key 2 after 30 …
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Effects of d -amphetamine and morphine on behavior maintained by fixed -interval schedules
… and morphine was an increase in early-interval responding in all FI components. This result was not consistent with previous studies in that usually behavior under the control of clock stimuli is resistant to the early rate-increasing effects of these drugs. While attending to time in …
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Effects of Concurrent Fixed Interval-fixed Ratio Schedules of Reinforcement on Human Responding.
… under temporal and ratio control of concurrent fixed interval-fixed ratio schedules. Two aspects of interaction between FI and FR schedules were distinguishable in the data. First, interaction between two schedules was observed in that changes in the value of one schedule affected behavior …
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A Methodological Investigation of Social Reinforcement Studies: The Effects of Fixed-Interval and Fixed-Ratio Schedules on Time and Rate Measures
Made available in DSpace on 2014-12-08T23:02:12Z (GMT). No. of bitstreams: 1 7013463.pdf: 3001166 bytes, checksum: 47c703d4dbae44559229d62927e2215f (MD5) Previous issue date: 1969
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The Effects of Manipulating One Requirement of a Conjunctive Schedule on Responding in the Pigeon
… the ratio requirement of a conjunctive fixed-interval fixed-ratio schedule on responding during the fixed interval. Procedure. Three experimentally-naive homing pigeons initially trained to peck a red response key on a fixed-interval schedule (FI 180 sec) served as subjects. The …
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An Evaluation of the Use of a Time-in Procedure to Increase On-task Behavior
… participated in the study. The study compared fixed time and fixed interval schedules procedure and finding that a fixed interval, time-in procedure was effective in increasing the duration of on-task behavior for two of the three participants. The third participant exhibited lower durations of …
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Source localization of MEG generation using spatio-temporal Kalman filter
… we derive spatio-temporal Kalman filter and fixed-interval smoothing algorithms for MEG source localization.To compare the methods analytically, we present a Bayesian derivation of the regularized least squares and Kalman filtering methods. This analysis reveals that the estimates computed …
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Variable sampling in multiparameter Shewhart charts
… charts, modified to have variable sampling intervals, to simultaneously monitor a set of parameters. Fixed sampling interval control charts are modified to utilize sampling intervals that vary depending on what is being observed from the data. Two problems are emphasized, namely, the …
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Development of error correction techniques for nitrate-N load estimation models
… sampling frequencies, combined threshold/fixed-interval monitoring approaches produced the best outcomes, while fixed-interval-only approaches produced the most accurate results for four- to eight-weeks sampling frequencies.
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Response patterning in goldfish: single alternation in a Pavlovian aversive paradigm
… observed in groups receiving a relatively short interval between reinforced and non-reinforced trials and a relatively long interval between non-reinforced and reinforced trials. Groups presented with the reversed temporal information between alternated trials and groups receiving fixed intervals …
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Development of a cable odometer with a network interface
… triggering Radar directly to make surveys at fixed interval. In other cases the Radar operates autonomously. For the latter case the data collected by both Radar and Odometer is related by a time-stamp. The Odometer is controlled on a web page. Depending on the mode of operation chosen the …
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Leveraging synergistic intervals to enhance timing under multiple interval schedules
… This study tested whether structuring multiple intervals with simple multiplicative relationships enables participants to use rewards from shorter intervals as cues to improve timing on longer intervals. Across two online experiments (N = 88), participants tracked five independent fixed-interval …
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An investigation of the relationship between rate of responding during and acquisition and resistance to experimental extinction.
… variable. The results of experiment I (fixed interval schedules) and experiment II (variable interval schedules) were similar - no systematic relationship between the two variables under observation was found. Experiments III and IV controlled individual differences by using multiple …
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Adjustment of Initial- and Terminal-Link Response Patterns to Suddenly Equivalent Terminal Links
… concurrent-chain schedules. Concurrent variable-interval initial links produced fixed-interval (FI) terminal links. Occasional `no-food' terminal links were interspersed pseudorandomly to obtain stop times, a single-trial measure of temporal discrimination. In rapid-acquisition conditions, …
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Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior
… for each experiment. Experiment 1 made use of fixed-interval (FI) schedules, the peak procedure, and a two-key (free-operant psychophysical) procedure. Indexes of timing performance under each of these schedules were assessed and compared. Timing indexes were decreased by both drugs in the …
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FEEL : a system for acquisition, processing and visualization of biophysiological signals and contextual information
… calendar entries, and user location at a fixed interval that is transmitted to the backend server. The backend server stores the contextual information and biophysiological signal data that is uploaded by the user, processes the information and provides a novel interface for viewing the …
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