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Edling, C.R. |
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Mathematics In Sociology |
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2002 |
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Annual Review of Sociology |
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28 |
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1 |
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197-220 |
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Since mathematical sociology was firmly established in the 1960s, it has grown tremendously. Today it has an impressive scope and deals with topical problems of social structure and social change. A distinctive feature of today's use of mathematics in sociology is the movement toward a synthesis between process, structure, and action. In combination with an increased attention to social mechanisms and the problems of causality and temporality, this synthesis can add to its relevance for sociology in general. The article presents recent advances and major sociological research streams in contemporary sociology that involve the application of mathematics, logic, and computer modeling. |
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Equine Behaviour @ team @ Edling2002 |
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4292 |
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BROUCEK,J.; UHRINCAT,M.; ARAVE,C. W.; FRIEND,T. H.; MIHINA,S.; KISAC,P.; HANUS, A. |
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Title |
Effects of Rearing Methods of Heifers during Milk Replacement Period |
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2002 |
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Czech Journal of Animal Science |
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Czech J. Anim. Sci |
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71 |
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4 |
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509-516 |
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Heifers, behaviour, maze, feeding, housing |
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Fifty-eight Holstein heifer calves were assigned to one out of three treatment groups after having nursed by their mothers for the first week: BN) individual hutch, bucket with nipple n=25; DF)loose housing pen, machine milk feeder, n=16; NC) loose housing pen, nursing cow, n=17. After weaning at 8 weeks, all calves were kept in group pens. At 15 weeks of age, the behaviour in the 6-unit maze (16.4 – 4.5 m) was determined. On the first observation day, the calves were tested five times (the first one for training); on the second day there were four runs. The calves had to solve two tasks. In task A, the passage was open on the left side, and on the right side (task B) on the next day. We were testing the following hypothesis: the speed of traversing the maze is affected by the rearing system. The slowest were NC calves. On the first day (task A), the average time to traverse the maze among treatments DF (43.9 s), BN (53 s) and NC (111.3 s) was different (F = 8.26*, P = 0.0007). On the second day (task B), the averages were: BN 77.1 s, DF 83.8 s and DC 166.6 s (F=8.17*, P = 0.0008). The results indicate that the feeding method and housing used to rear calves may have a significant impact on their maze behaviour. |
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Equine Behaviour @ team @ |
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4323 |
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Williams, J.L.; Friend, T.H.; Toscano, M.J.; Collins, M.N.; Sisto-Burt, A.; Nevill, C.H. |
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The effects of early training sessions on the reactions of foals at 1, 2, and 3 months of age |
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2002 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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77 |
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2 |
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105-114 |
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Equine; Imprint training; Imprinting; Learning; Training; Handling; Foal |
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An early training procedure commonly termed “foal imprint training” is widely promoted in the horse industry. However, there have been no published scientific investigations of its efficacy. This study determined the effects of a training procedure on foals and their reaction to stimuli used in the early training procedure, and to a novel stimulus, at 1, 2 and 3 months of age. Twenty-five foals received a standard training procedure at 2, 12, 24, and 48 h after birth. After the training procedure, the foals received minimal additional handling that included veterinary treatments and occasional relocation. Twenty-two foals born over the same time period served as controls. All 47 (25 trained, 22 control) foals were tested at 1 month of age. Only 20 were available for testing at 2 months of age, and nine were available at 3 months. Percentage change from baseline heart rate, time required to complete exposure to each stimulus (foals that were more reactive took longer) and the behavior of each foal during the introduction of each stimulus were recorded. Overall, the control foals tended to receive lower (better) behavioral scores at 1 and 2 months of age. Foals that underwent the training procedure tended to require less time to complete exposure to the stimulus and had lower heart rates during exposure to the stimuli at 1 and 2 months of age. By 3 months of age, there were no significant differences between trained and control foals for any measures. Early training was not efficacious in this study. |
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Equine Behaviour @ team @ |
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4331 |
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Waran, N.; Leadon, D.; Friend, T. |
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Title |
The Effects of Transportation on the Welfare of Horses |
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2002 |
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The Welfare of Horses |
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125-150 |
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Typically, horses are transported many times in their lives, this is with the exception of the horses reared for meat. Although difficult to estimate the extent of the movement of horses worldwide, it is clear that this is a substantial and growing practice. Until recently research into the effects of the different methods of transport (road, sea and air), was limited. This may have been because it was presumed that, because of their financial and emotional value, horses experience higher standards of transportation, than other large domestic animals. The process of transporting horses includes a range of potential Stressors, and there is scientific evidence that many of these can impact upon the welfare of the horse. In this chapter, we examine the effects of the different modes used to transport horses and we offer suggestions where possible for improvements in this practice. |
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Equine Behaviour @ team @ |
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4374 |
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Goodwin, D. |
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Title |
Horse Behaviour: Evolution, Domestication and Feralisation |
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Book Chapter |
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2002 |
Publication |
The Welfare of Horses |
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1-18 |
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The evolution of the horse began some 65 million years ago. The horse"s survival has depended on adapative behaviour patterns that enabled it to exploit a diverse range of habitats, to successfully rear its young and to avoid predation. Domestication took place relatively recently in evolutionary time and the adaptability of equine behaviour has allowed it to exploit a variety of domestic environments. Though there are benefits associated with the domestic environment, including provision of food, shelter and protection from predators, there are also costs. These include restriction of movement, social interaction, reproductive success and maternal behaviour. Many aspects of domestication conflict with the adaptive behaviour of the horse and may affect its welfare through the frustration of highly motivated behaviour patterns. Horse behaviour appears little changed by domestication, as evidenced by the reproductive success of feral horse populations around the world. |
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Equine Behaviour @ team @ |
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4375 |
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George, I.; Cousillas, H.; Richard, J.-P.; Hausberger, M. |
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Title |
Song perception in the European starling: hemispheric specialisation and individual variations |
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Journal Article |
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2002 |
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Comptes Rendus Biologies |
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Compt. Rend. Biol. |
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325 |
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3 |
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197-204 |
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lateralisation; perception; birdsong; starling; electrophysiology; individual variations; latéralisation; perception; chant; étourneaux; électrophysiologie; variations individuelles |
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Hemispheric specialisation for speech in humans has been well documented. The lateralisation for song production observed in songbirds is reminiscent of this hemispheric dominance. In order to investigate whether song perception is also lateralised, we made multiunit recordings of the neuronal activity in the field L of starlings during the presentation of species-specific and artificial non-specific sounds. We observed a systematic stronger activation in one hemisphere than in the other one during the playback of species-specific sounds, with inter-subject variability in the predominant hemisphere for song perception. Such an asymmetry was not observed for artificial non-specific sounds. Thus, our results suggest that, at least at the individual level, the two hemispheres of the starlings' brain perceive and process conspecific signals differently. |
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Equine Behaviour @ team @ |
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4636 |
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Pirasteh, A. |
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Dr. Strasser's methods not to just save money |
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2002 |
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Journal of Equine Veterinary Science |
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22 |
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3 |
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102-103 |
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Equine Behaviour @ team @ |
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4663 |
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Tibbetts, E.A. |
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Visual signals of individual identity in the wasp Polistes fuscatus |
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2002 |
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Proceedings of the Royal Society B: Biological Sciences |
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Proc. Roy. Soc. Lond. B Biol. Sci. |
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269 |
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1423 |
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1423-1428 |
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hymenoptera; individual-recognition; learning-insect |
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Individual recognition is an essential component of interactions in many social systems, but insects are often thought incapable of the sophistication necessary to recognize individuals. If this were true, it would impose limits on the societies that insects could form. For example, queens and workers of the paper wasp Polistes fuscatus form a linear dominance hierarchy that determines how food, work and reproduction are divided within the colony. Such a stable hierarchy would be facilitated if individuals of different ranks have some degree of recognition. P. fuscatus wasps have, to our knowledge, previously undocumented variability in their yellow facial and abdominal markings that are intriguing candidates for signals of individual identity. Here, I describe these highly variable markings and experimentally test whether P. fuscatus queens and workers use these markings to identify individual nest-mates visually. I demonstrate that individuals whose yellow markings are experimentally altered with paint receive more aggression than control wasps who are painted in a way that does not alter their markings. Further, aggression declines towards wasps with experimentally altered markings as these novel markings become familiar to their nestmates. This evidence for individual recognition in P. fuscatus indicates that interactions between insects may be even more complex than previously anticipated.
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Equine Behaviour @ team @ 929 |
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4732 |
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King, S.R.B. |
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Home range and habitat use of free-ranging Przewalski horses at Hustai National Park, Mongolia |
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2002 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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78 |
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2-4 |
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103-113 |
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Przewalski horse; Equus przewalskii; Takhi; Home range; Re-introduction; Habitat use |
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Przewalski horses (Equus ferus przewalskii), also known as takhi, were first re-introduced to the wild in Hustai National Park, Mongolia, in 1994. Since then the number of free harems increased to a maximum of seven; there are currently six (October 2000). The size of the home range of each of the harems changed among years and among seasons. The horses tended to settle in a home range close to where they were released although they explored the surrounding area. The use of the habitat within each home range changed through the day, with the horses grazing in the valleys during the morning and evening, and moving to higher places to stand rest and use as a refuge from heat and flies during the middle of the day. Range establishment and area, as well as habitat use are discussed. |
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0168-1591 |
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Equine Behaviour @ team @ |
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4682 |
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Peterson R.O.; Jacobs A.K.; Drummer T.D.; Mech L.D.; Smith D.W. |
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Leadership behavior in relation to dominance and reproductive status in gray wolves, Canis lupus |
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2002 |
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Canadian Journal of Zoology |
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80 |
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1405-1412 |
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We analyzed the leadership behavior of breeding and nonbreeding gray wolves (Canis lupus) in three packs during winter in 1997-1999. Scent-marking, frontal leadership (time and frequency in the lead while traveling), initiation of activity, and nonfrontal leadership were recorded during 499 h of ground-based observations in Yellowstone National Park. All observed scent-marking (N = 158) was done by breeding wolves, primarily dominant individuals. Dominant breeding pairs provided most leadership, consistent with a trend in social mammals for leadership to correlate with dominance. Dominant breeding wolves led traveling packs during 64% of recorded behavior bouts (N = 591) and 71% of observed travel time (N = 64 h). During travel, breeding males and females led packs approximately equally, which probably reflects high parental investment by both breeding male and female wolves. Newly initiated behaviors (N = 104) were prompted almost 3 times more often by dominant breeders (70%) than by nonbreeders (25%). Dominant breeding females initiated pack activities almost 4 times more often than subordinate breeding females (30 vs. 8 times). Although one subordinate breeding female led more often than individual nonbreeders in one pack in one season, more commonly this was not the case. In 12 cases breeding wolves exhibited nonfrontal leadership. Among subordinate wolves, leadership behavior was observed in subordinate breeding females and other individuals just prior to their dispersal from natal packs. Subordinate wolves were more often found leading packs that were large and contained many subordinate adults.
Nous avons analysé le comportement de commandement chez des loups gris (Canis lupus) reproducteurs et non reproducteurs appartenant à trois meutes durant les hivers de 1997-1999. Le marquage d'odeurs, la position en tête de meute (la durée et la fréquence au cours des déplacements), l'initiation des activités et la prise de décisions ailleurs qu'en tête du groupe ont été notés pendant 499 h d'observations au sol dans le Parc national de Yellowstone. Tous les marquages (N = 158) ont été faits par des loups reproducteurs, surtout des individus dominants. Ce sont surtout les couples dominants qui assurent le commandement, en accord avec une tendance chez les mammifères sociaux chez lesquels la fonction de chef est en corrélation avec la dominance. Les loups reproducteurs dominants ont conduit les meutes en déplacement pendant 64 % (N = 591) des épisodes de comportement et pendant 71 % des épisodes de déplacement (N = 64 h). Les mâles et les femelles reproducteurs ont dirigé les meutes en déplacement à peu près également, ce qui reflète probablement l'investissement parental important aussi bien de la part des reproducteurs mâles que des femelles. Les comportements nouveaux (N = 104) ont été adoptés presque trois fois plus souvent par des reproducteurs dominants (70 %) que par des individus non reproducteurs (25 %). Des femelles reproductrices dominantes ont été instigatrices des activités de leur meute environ quatre fois plus souvent que les femelles reproductrices subordonnées (30 vs. 8 fois). Bien qu'une femelle reproductrice subordonnée ait pris la direction de sa meute plus souvent que les individus non reproducteurs au cours d'une saison, cela n'est pas habituel. Dans 12 cas, des loups reproducteurs ont pris la direction de leur meute sans être en tête. Chez les individus subordonnés, le comportement de commandement a été observé chez des femelles reproductrices et chez d'autres individus juste avant qu'ils ne quittent leur meute d'origine au moment de la dispersion. Les loups subordonnés mènent surtout de grands troupeaux qui comptent beaucoup d'individus subordonnés.[Traduit par la Rédaction] |
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Equine Behaviour @ team @ |
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