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Author |
Shaki Sp, |
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Title |
About the indian Wild ass |
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Journal Article |
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1983 |
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Tigerpaper |
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10 |
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13-16 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1588 |
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Author |
Java Rl, |
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Title |
Census of wild Ass |
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Journal Article |
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1983 |
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Tigerpaper |
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10 |
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23 |
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from Professor Hans Klingels Equine Reference List |
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1218 |
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Author |
Heffner, H.E.; Heffner, R.S. |
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Title |
The hearing ability of horses |
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Journal Article |
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Year |
1983 |
Publication |
Equine Pract |
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5 |
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27-32 |
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Cited By (since 1996): 2; Export Date: 21 October 2008 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4520 |
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Author |
Kiley-Worthington, M. |
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Title |
Stereotypies in horses |
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Journal Article |
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Year |
1983 |
Publication |
Equine Practice |
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5 |
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34-40 |
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Cited By (since 1996): 17; Export Date: 24 October 2008 |
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Admin @ knut @ |
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4602 |
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Author |
Hogan, D.E.; Zentall, T.R.; Pace, G. |
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Title |
Control of pigeons' matching-to-sample performance by differential sample response requirements |
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Journal Article |
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Year |
1983 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
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Volume |
96 |
Issue |
1 |
Pages |
37-49 |
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Keywords |
Animals; Association; *Color Perception; Columbidae; Cues; *Discrimination Learning; Reinforcement Schedule; Time Factors |
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Pigeons were trained on a matching-to-sample task in which sample hue and required sample-specific observing behavior provided redundant, relevant cues for correct choices. On trials that involved red and yellow hues as comparison stimuli, a fixed-ratio 16 schedule (FR 16) was required to illuminate the comparisons when the sample was red, and a differential-reinforcement-of-low-rates 3-sec schedule (DRL 3-sec) was required when the sample was yellow. On trials involving blue and green hues as comparison stimuli, an FR 16 schedule was required when the sample was blue and a DRL 3-sec schedule was required when the sample was green. For some pigeons, a 0-sec delay intervened between sample offset and comparison onset, whereas other pigeons experienced a random mixture of 0-sec and 2-sec delay trials. Test trial performance at 0-sec delay indicated that sample-specific behavior controlled choice performance considerably more than sample hue did. Test performance was independent of whether original training involved all 0-sec delay trials or a mixture of 0-sec and 2-sec delays. Sample-specific observing response requirements appear to facilitate pigeons' matching-to-sample performance by strengthening associations between the observing response and correct choice. |
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0002-9556 |
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PMID:6859346 |
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no |
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Call Number |
refbase @ user @ |
Serial |
265 |
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Author |
Sone, K. |
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Title |
[Apropos of 5 cases of so-called “delusions of cutaneous and intestinal infestation”--psychopathologic and neuropsychological considerations] |
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Journal Article |
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Year |
1983 |
Publication |
Folia Psychiatrica et Neurologica Japonica |
Abbreviated Journal |
Folia Psychiatr Neurol Jpn |
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Volume |
37 |
Issue |
1 |
Pages |
37-55 |
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Adult; Aged; Agnosia/complications; Attitude to Health; Delusions/complications/etiology/*psychology; Female; Humans; Intestines; Male; Middle Aged; Personality; Psychotherapy; *Sensation; Skin |
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Five cases with so-called “Dermato- und Enterozoenwahn” are reported, and the following themes are analysed from the “multidimensional” point of view: 1) process to build the shape of the intruder which is bothering the patients, 2) behavior against the intruding small animal and attitude towards the therapeutist; their characteristic manner to make complaints, 3) premorbid personality and 4) physical findings. In regard to one of the formation types of this disease, we have postulated through the neuropsychological analysis of case 5 (somatoparaphrenic patient) that patients of the typical cases 1, 2 and 3 suffer from a special kind of agnosia (perturbation of recognition; disturbance of aperception) in which they take their abnormal body sensations for causing by the small imaginary animals. Our cases showed the importance of a premorbid personality and present life-situations in combination with physical dissolution taking part in the pathoplastic process of this particular disease. |
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German |
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Uber funf Falle von sogenanntem “Dermato- und Enterozoenwahn”--psychopathologische und neuropsychologische Betrachtungen |
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0015-5721 |
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PMID:6884912 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4187 |
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Author |
Boyd, R.; Silk, J.B. |
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Title |
A method for assigning cardinal dominance ranks |
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Journal Article |
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Year |
1983 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
31 |
Issue |
1 |
Pages |
45-58 |
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Abstract |
Dominance hierarchies are widely described in nature. Commonly, an individual's ordinal rank is used as a measure of its position in the hierarchy, and, therefore its priority of access to resources. This use of ordinal ranks has several related drawbacks: (1) it is difficult to assess the magnitude or the significance of the difference in degree of dominance between two individuals; (2) it is difficult to evaluate the significance of differences between dominance matrices based on different behaviours or on the same behaviour at different times, and (3) it is difficult to use parametric statistical techniques to relate dominance rank to other quantities of interest. In this paper we describe a method for assigning cardinal dominance indices that does not suffer from these drawbacks. This technique is based on the Bradley-Terry model from the method of paired comparisons. We show how this model can be reinterpreted in terms of dominance interactions. and we describe a simple iterative technique for computing cardinal ranks. We then describe how to evaluate (1) whether the rank differences between individuals are significant, and (2) whether differences in the cardinal hierarchies based on different behaviours or the same behaviour at different times are significant. We then show how to generalize the method to deal with behaviours that sometimes have ambiguous outcomes, or behaviours for which the rank difference between a pair of individuals affects the rate of interaction between them. |
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refbase @ user @ |
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859 |
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Author |
Berger, J. |
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Title |
Induced abortion and social factors in wild horses |
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Journal Article |
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Year |
1983 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
303 |
Issue |
5912 |
Pages |
59-61 |
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Keywords |
Abortion, Induced/*veterinary; Abortion, Veterinary/*etiology; Aggression/physiology; Animals; Evolution; Female; Horses/*physiology; Humans; Pregnancy; Sexual Behavior, Animal/*physiology |
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Much evidence now suggests that the postnatal killing of young in primates and carnivores, and induced abortions in some rodents, are evolved traits exerting strong selective pressures on adult male and female behaviour. Among ungulates it is perplexing that either no species have developed convergent tactics or that these behaviours are not reported, especially as ungulates have social systems similar to those of members of the above groups. Only in captive horses (Equus caballus) has infant killing been reported. It has been estimated that 40,000 wild horses live in remote areas of the Great Basin Desert of North America (US Department of Interior (Bureau of Land Management), unpublished report), where they occur in harems (females and young) defended by males. Here I present evidence that, rather than killing infants directly, invading males induce abortions in females unprotected by their resident stallions and these females are then inseminated by the new males. |
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0028-0836 |
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PMID:6682487 |
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Equine Behaviour @ team @ |
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4365 |
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Author |
Langlois, B.; Minkema, D.; Bruns, E. |
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Title |
Genetic problems in horse breeding |
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1983 |
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Livestock Production Science |
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10 |
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1 |
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69-81 |
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The purpose of this paper is to give a short survey of the present problems concerning the genetic improvement of horse breeds. The evolution of these populations in Europe, characterized by a deep change from production of draught horses towards that of leisure horses, is described and the influence of the demographical parameters on the selection of these horse populations, is discussed. The generation interval represents an important handicap only surmounted in the case of racing breeds where a high selection intensity can be practised since all animals are subjected to performance testing. In the other cases, the farmer usually does not use modern breeding techniques, but uses crosses instead, which lead more easily to visible results. The available selection criteria are also dealt with. A distinction is made between direct estimates evaluating the abilities of the animals in practice and the indirect estimates measuring a character in correlation to previous ones. For the former estimates, a distinction is made between those resulting from competitions (handicap, records or earnings) and those resulting from direct in-station measurements (saddle, jumping, dressage abilities, draught power). For the indirect estimates, often used especially for the selection of mares, the most important analysis is obviously that of the conformation. However, in the future early selection criteria according to more physiological data should be sought and developed. Estimation of the breeding value according to a given ability is thereafter pointed out. There are two situations: “the panmictic case” concerning sport and draught horses and “the non-panmictic case” corresponding to racing horses, which give rise to some problems. The setting up of breeding plans is discussed. Due to the different economic situations and various objectives of horse production, conclusions are drawn about the role played by geneticists in the present development of this sector. |
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refbase @ user @ |
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3967 |
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Author |
Lang Em, |
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Title |
Die Somaliwildesel, Equus asinus somalicus, im Basler Zoo |
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Year |
1983 |
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Zool Garten NF |
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53 |
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73-80 |
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from Professor Hans Klingels Equine Reference List |
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1337 |
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