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| Author | Verheyen R, | ||||
| Title | Contribution l'Etude Ethologique des Mammifüres du Parc National de L'Upemba (Eqqus quagga boehmi Matschie) | Type | Journal Article | ||
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1951 | Publication | Abbreviated Journal | Inst Nat Parks Belgisch – Kongo | |
| Volume | 98 | Issue | Pages | 102 | |
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| Notes | from Professor Hans Klingels Equine Reference List | Approved | no | ||
| Call Number | Serial | 1677 | |||
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| Author | Landau, H. | ||||
| Title | On dominance relations and the structure of animal societies: I. Effect of inherent characteristics | Type | Journal Article | ||
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1951 | Publication | Bulletin of Mathematical Biology | Abbreviated Journal | |
| Volume | 13 | Issue | 1 | Pages | 1-19 |
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| Abstract | Abstract Societies are considered in which a non-transitive dominance relation exists between every pair of members, such as the peck-right in a flock of hens. A one-dimensional measure of the structure of such a society,h, is defined, withh=0 for equality andh=1 for the hierarchy. It is assumed that each member of the society is characterized by an ability vector whose components depend on individual characteristics such as size, concentration of sex hormone, etc., but not on social factors such as social rank. The distribution of abilities among members of the society is assumed to be given by a distribution function which is the same for all members, and the probability that one member dominates another is given by a function of the ability vectors of the two. On these assumptions formulas for the expected (mean) value and variance ofh are determined in terms of the distribution and dominance probability functions. Some special cases are calculated, especially that for normany distributed abilities and dominance probability given by the normal probability integral. Several conclusions are derived. If all members are of equal ability, so that dominance probability is 1/2, then any sizable society is much more likely to be near the equality than the hierarchy; and, as the size of the society increases, the probability that it will be near the hierarchy becomes vanishingly small. If the dominance probability is a weighted sum of several independent components, which make up the ability vector, then the society is less likely to be close to the hierarchy as the number of these components increases. The hierarchy is the prevalent structure only if unreasonably small differences in ability are decisive for dominance. From this it appears that the social factors, or psychological factors such as the previous history of dominance, which are not included in the present treatment, may be of great importance in explaining the observed prevalence of structures very close to the hierarchy in flocks of domestic hens. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4287 | ||
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| Author | Rosenzweig, M.R. | ||||
| Title | Representations of the Two Ears at the Auditory Cortex | Type | Journal Article | ||
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1951 | Publication | American Journal of Physiology -- Legacy Content | Abbreviated Journal | |
| Volume | 167 | Issue | 1 | Pages | 147-158 |
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| Abstract | This investigation is part of a more general study of binaural perception and its electrophysiological correlates. In order to account for some of the phenomena of binaural perception, Boring (I) proposed that the two ears are represented at the auditory cortex by two different populations of cortical units. We have attempted to test this hypothesis, taking up two aspects in succession: I) Do the populations of cortical units that represent the two ears differ in size at the two cerebral hemispheres?S timulation of either ear evokes electrophysiological responseso ver the entire extent of the auditory cortex of both hemispheres. It has been suggestedt hat the responsesa re larger in amplitude at the hemisphere contralateral to the ear stimulated (2-4), but this has also been denied (5). We will present quantitative evidence to show that at both hemispheres the response of the contralateral ear is significantly larger than the response of the ipsilateral ear.3 2> Are the two ears represented by independent populations of cortical units, or are they represented by overlapping populations of cortical units? Results from a small number of experiments indicate that the two populations overlap considerably. |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5359 | ||
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| Author | Alexander, F.; Macpherson, M.J.D.; Oxford, A.E. | ||||
| Title | Fermentative activities of some members of the normal coccal flora of the horse's large intestine | Type | Journal Article | ||
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1952 | Publication | Journal of comparative pathology | Abbreviated Journal | J Comp Pathol |
| Volume | 62 | Issue | 4 | Pages | 252-259 |
| Keywords | *Horses; *Intestines; *Streptococcus; *Horses; *Intestines; *Streptococcus | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0021-9975 | ISBN | Medium | ||
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| Notes | PMID:12999997 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 125 | ||
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| Author | Alexander, F. | ||||
| Title | The effects of some humoral agents on the horse ileum | Type | Journal Article | ||
| Year |
1952 | Publication | British journal of pharmacology and chemotherapy | Abbreviated Journal | Br J Pharmacol Chemother |
| Volume | 7 | Issue | 1 | Pages | 25-32 |
| Keywords | Ileum/*drug effects; *HORMONES/effects; *ILEUM/effect of drugs on | ||||
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| ISSN | 0366-0826 | ISBN | Medium | ||
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| Notes | PMID:14904899 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 126 | ||
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| Author | Alexander, F. | ||||
| Title | Some functions of the large intestine of the horse | Type | Journal Article | ||
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1952 | Publication | Quarterly journal of experimental physiology and cognate medical sciences | Abbreviated Journal | Q J Exp Physiol Cogn Med Sci |
| Volume | 37 | Issue | 4 | Pages | 205-214 |
| Keywords | *Horses; *Intestine, Large; *Horses; *Intestine, Large | ||||
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| ISSN | 0033-5541 | ISBN | Medium | ||
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| Notes | PMID:13014259 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 127 | ||
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| Author | GRZIMEK B | ||||
| Title | Versuche über das Farbsehen von Pflanzenfressern., | Type | Journal Article | ||
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1952 | Publication | Zeitschrift für Tierpsychologie | Abbreviated Journal | Z. Tierpsychol. |
| Volume | 9 | Issue | Pages | ||
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| Notes | from Professor Hans Klingels Equine Reference List | Approved | no | ||
| Call Number | Serial | 1149 | |||
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| Author | Hediger H, | ||||
| Title | Unsere Zebras | Type | Journal Article | ||
| Year |
1952 | Publication | Abbreviated Journal | Die Umschau | |
| Volume | 52 | Issue | Pages | ||
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| Notes | from Professor Hans Klingels Equine Reference List | Approved | no | ||
| Call Number | Serial | 1176 | |||
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| Author | Hoepen Van Ecn, | ||||
| Title | Die stamlyn van die sebras | Type | Journal Article | ||
| Year |
1952 | Publication | Abbreviated Journal | Paleont Navorsing Nasionale Mus | |
| Volume | 2 | Issue | Pages | 25-37 | |
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| Notes | from Professor Hans Klingels Equine Reference List | Approved | no | ||
| Call Number | Serial | 1188 | |||
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| Author | Simpson Gg, | ||||
| Title | Notes on british hyracotheres | Type | Journal Article | ||
| Year |
1952 | Publication | Abbreviated Journal | J Soc Lond | |
| Volume | 42 | Issue | Pages | 195-206 | |
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| Notes | from Professor Hans Klingels Equine Reference List | Approved | no | ||
| Call Number | Serial | 1595 | |||
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