International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, California / Modern telemetry systems collect large quantities of data at high rates of speed. To support near real-time analysis of this data, a sophisticated data archival system is required. If the data is to be analyzed during the test, it must be available via computer-accessible peripheral devices. The use of computer-compatible media permits powerful “instant- replay-type” functions to be implemented, allowing the user to search for events, blow-up time segments, or alter playback rates. Using computer-compatible media also implies inexpensive COTS devices with an “industry standard” interface and direct media compatibility with host processing systems. This paper discusses the design and implementation of a board-level archive subsystem developed by Veda Systems, Incorporated.

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal.

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

<p>Social structure is a key determinant of population biology and is central to the way animals exploit their environment. The risk of predation is often invoked as an important factor influencing the evolution of social structure in cetaceans and other mammals, but little direct information is available about how cetaceans actually respond to predators or other perceived threats. The playback of sounds to an animal is a powerful tool for assessing behavioral responses to predators, but quantifying behavioral responses to playback experiments requires baseline knowledge of normal behavioral patterns and variation. The central goal of my dissertation is to describe baseline foraging behavior for the western Atlantic short-finnned pilot whales (Globicephala macrohynchus) and examine the role of social organization in their response to predators. To accomplish this I used multi-sensor digital acoustic tags (DTAGs), satellite-linked time-depth recorders (SLTDR), and playback experiments to study foraging behavior and behavioral response to predators in pilot whales. Fine scale foraging strategies and population level patterns were identified by estimating the body size and examining the location and movement around feeding events using data collected with DTAGs deployed on 40 pilot whales in summers of 2008-2014 off the coast of Cape Hatteras, North Carolina. Pilot whales were found to forage throughout the water column and performed feeding buzzes at depths ranging from 29-1176 meters. The results indicated potential habitat segregation in foraging depth in short-finned pilot whales with larger individuals foraging on average at deeper depths. Calculated aerobic dive limit for large adult males was approximately 6 minutes longer than that of females and likely facilitated the difference in foraging depth. Furthermore, the buzz frequency and speed around feeding attempts indicate this population pilot whales are likely targeting multiple small prey items. Using these results, I built decision trees to inform foraging dive classification in coarse, long-term dive data collected with SLTDRs deployed on 6 pilot whales in the summers of 2014 and 2015 in the same area off the coast of North Carolina. I used these long term foraging records to compare diurnal foraging rates and depths, as well as classify bouts with a maximum likelihood method, and evaluate behavioral aerobic dive limits (ADLB) through examination of dive durations and inter-dive intervals. Dive duration was the best predictor of foraging, with dives >400.6 seconds classified as foraging, and a 96% classification accuracy. There were no diurnal patterns in foraging depth or rates and average duration of bouts was 2.94 hours with maximum bout durations lasting up to 14 hours. The results indicated that pilot whales forage in relatively long bouts and the ADLB indicate that pilot whales rarely, if ever exceed their aerobic limits. To evaluate the response to predators I used controlled playback experiments to examine the behavioral responses of 10 of the tagged short-finned pilot whales off Cape Hatteras, North Carolina and 4 Risso’s dolphins (Grampus griseus) off Southern California to the calls of mammal-eating killer whales (MEK). Both species responded to a subset of MEK calls with increased movement, swim speed and increased cohesion of the focal groups, but the two species exhibited different directional movement and vocal responses. Pilot whales increased their call rate and approached the sound source, but Risso’s dolphins exhibited no change in their vocal behavior and moved in a rapid, directed manner away from the source. Thus, at least to a sub-set of mammal-eating killer whale calls, these two study species reacted in a manner that is consistent with their patterns of social organization. Pilot whales, which live in relatively permanent groups bound by strong social bonds, responded in a manner that built on their high levels of social cohesion. In contrast, Risso’s dolphins exhibited an exaggerated flight response and moved rapidly away from the sound source. The fact that both species responded strongly to a select number of MEK calls, suggests that structural features of signals play critical contextual roles in the probability of response to potential threats in odontocete cetaceans.</p> / Dissertation

Abstract This study analyzed the contexts of three types of agonistic calls (Growl, Threat rattle, Vibrato growl) in Formosan macaques and their responses to predators and alarm calls at Mt. Longevity. Under natural condition, 112 five-minute scan samplings and 100 twenty-minute behavior samplings were collected to record agonistic behaviors and agonistic calls of macaques. In addition, 11 dog-presence tests and 102 playback experiments were successfully conducted from January 2003 to April 2004. Of 385 agonistic events, 61.8% comprise of vocal bouts contained units belonging to single type of agonistic calls, and 31.8% bouts were mixed units contained more than one type of agonistic calls. Among these three single types of agonistic calls, Vibrato growl was used most frequently during conspecific interactions (44.3%); Threat rattle was used toward human (51.7%) and dogs (94.4%). During intraspecies conflicts of macaques, the vocal rates of three single type agonistic calls decreased from adult males, adult females and juveniles to infants. The average units per bout of Growl was higher than that of Threat rattle and Vibrato growl (p<0.0002). However, the agonistic interactions explain the different functions of the three types of agonistic calls. Growl was frequently accomplished with chase of callers (45.6%), while flee was usually expressed by receivers (57.9%). When monkeys uttered Threat rattle or Vibrato growl, open mouth threat was the most frequent behavior expressed by callers (80.5% and 73.1%), while evade was most frequent behavior expressed by receivers (43.9% and 31.9%). Growl conveyed messages about intense callers and contexts, and receivers avoided damage through fleeing. These results support Smith (1981) hypothesis referential signal carry information about external objects, contexts or a caller internal state as reflected in the probability of its subsequent behavior pattern. Receivers are able to attribute a certain meaning and express appropriate responses by the combination of signal structure and the context in which they are exposed the call. Six different acoustic features of alarm calls existed between adult males and juvenile males. Alarm calls from Juveniles have higher Maximal, Median and Modulation Fundamental Frequencies than from adult males (p<0.0001). But alarm calls from juveniles have lower Highest Frequency, Total Range of Frequency and Duration of each Unit than from adult males (p<0.005). The results support current theory that the duration and fundamental frequency reflect body size. In the playback experiments, macaques responded stronger to alarm calls from adult males than from juvenile males (p<0.0001). The average response score of macaques toward alarm calls from playback experiments was highest from infants, followed by juveniles, adult females and adult males. Adult macaques often responded to playbacks by looking in the direction of the loudspeaker. Juveniles and infants most often responded to playback calls by escape and startle. In playback experiments of alarm calls from adult males, F troop had significant different responses in three different places, strongest in the unfamiliar place (p<0.0001). The presents of dog elicited macaques with stronger responses than playback of dog barks (p<0.0001).

Abstract This study analyzed the alarm calls of Formosan macaques and their functions from Mt. Longevity. Under the natural condition, 137 five-minute scan sampling and 129 completely 20-minute all occurrence sampling were collected to record behaviors and the alarm calls. In addition, 43 stimulus (predator) tests and 87 playback experiments were successfully conducted from September 2002 to March 2003. Incidents that triggered alarm calls included: the confrontation with dogs, threats from travelers with a cane, slingshots, or stones, encounters with other troops of macaques, passing-by motors or mobile cars, airplanes flying above, and some unrecognizable factors. Under the natural condition, most of the alarm calls produced by Formosan macaques were responds toward dogs (63.46%), with the average frequency of 0.78 times/10hrs. In the predator tests, types of stimulus (dog, human with slingshot, m-snake1 and m-snake2), sex/age classes (adult male, adult female, juvenile, and infant), and the position of macaques (0m, <1m, 1m, and ¡Ù2m) had great influence on the behavioral response of macaques (p<0.01). The response scores were from 3 to 0 (move away more than 5 times body length or climbed to tree, move away up to 5 times body length, visual orientation towards the predator and no apparent response). The average response score of macaques to dogs was the highest one, far above threats from a person with a slingshot, m-snake1 and m-snake 2 (p<0.05). When Formosan macaques confront dogs, the vocal frequency (time/individual) to the alarm call had great influence on sex/age classes of macaques (p<0.01), and the average alarm call frequency was highest from adult males. When human with slingshots and m-snake were predators, majority of the adult males and females adopted run-away (69.91¢M), while very few climbed up trees (8.02¢M) to prevent from any harm caused by predators. However, they ran away (31.52%) or climbed up trees (48.47%) in response to dogs in different proportions. The average response score of macaques, from high to low, was from infant, juvenile, adult female and adult male, and the differences were significant (p<0.05). When Formosan macaques encounter these four types of predators, their alarm calls were quite similar in the spectrographs. The six basic vocal characteristics (maximal, median and minimal fundamental frequency, lowest and peak frequency and duration), analyzed by canonical discriminate analysis, indicated that alarm calls of Formosan macaques confront dogs and human with slingshots could be distinguished from snake models. The four types of predators had significant effects at the median and maximal fundamental frequency of the basic vocal characteristics from adult females and juveniles (p<0.01). But there was no difference in the nine basic vocal characteristics of alarm calls from adult males and infants toward four types of predators. The alarm calls of adult females and juveniles toward dogs in the median and maximal fundamental frequency both were significantly lower than those from m-snake1. In the playback experiments, sex/age classes, types of the alarm calls toward stimulus (dogs, travelers with slingshots, m-snake1 and m-snake 2) and the position of macaques had significant effects on their behavioral responses (p<0.01). The average response score of macaques in playbacks, from high to low, was from infant, juvenile, adult female, and the adult male, and the differences were significant (p<0.05). When the alarm call caused by dogs played back, the average response score of macaques was higher than the alarm calls stimulated by m-snake1 and m-snake 2 (P<0.05). In the playback experiments, when macaques at a higher place (¡Ù2m), they often visually orientated towards the predator or no apparent response whit a lowest response score. The average response scores of the adult males and females toward four types of alarm calls (playback) were higher than the control ones (p<0.05).

Pretesting prior to a study session has been shown to benefit memory for pretested information compared to traditional study. While previous research has not found a detriment to non-pretested but related material, it is possible that taxing attention by increasing the playback speed of presented material could reveal such impairments. The current study (N = 239) compared multiple-choice learning from educational videos at 1x, 1.5x, and 2x speeds. Three videos (one at each speed) were presented after a pretest, for which half of the tested material was pretested, and half was not (non-pretested related). Another three videos were presented without a pretest (non-pretested). Benefits from pretesting and impairments associated with increased playback speed were observed, but no evidence of impairments to non-pretested related information were observed even at an increased playback speed. These results are inconsistent with an attentional account of the pretesting effect.

The purpose of this study is to consider the playback as a consumer educational material, and to test its usefulness in transmitting and securing acceptance of consumer information when presented to selected groups of individuals. Another purpose of the study is to make a contribution to the sum total of results obtained by the Institute for Consumer Education in its experimentation with the playback.

Teatrinio ugdymo galimybės formuojant profesinius interesus 11 -12 kl.mokiniams. / Theatrical skills in formation of professional interests have been little discussed recently in lithuania.

Interspecific aggression of meadow pipit (Anthus pratensis) towards treepipit (A. trivialis), whinchat (Saxicola rubetra) and skylark (Alauda arvensis) and interspecific aggression of whinchat towards meadow pipit was tested in playback experiments at the beginning of breeding cycle (both species) and during the brood feeding period (whinchat only). Neither meadow pipits nor whinchats responded aggressively to the playback of the heterospecific songs. Whinchats, however, chased or attacked meadow pipits that approached it in response to the meadow pipit songs in the brood feeding period. I suggest that the aggressive behaviour in whinchat is triggered rather by visual than acoustic cues. Another series of playback experiments with meadow pipits was carried out to investigate the effect of the sensitisation caused by previous playback of the conspecific song on performance during the playback of the tree pipit song 30 minutes later. No clear effect was discovered, but some of meadow pipits reacted in a way more characteristic for the intraspecific experiments.