scholarly journals Group behaviours and individual spatial sorting before departure predict the dynamics of collective movements in horses

2021 ◽  
Vol 174 ◽  
pp. 115-125
Author(s):  
Léa Briard ◽  
Jean-Louis Deneubourg ◽  
Odile Petit
Modern Italy ◽  
1998 ◽  
Vol 3 (02) ◽  
pp. 153-157
Author(s):  
Stephen Gundle ◽  
Lucy Riall

In recent decades historiography has moved decisively away from the highly personalized treatments of past events which were once favoured. Not ‘great men’ but ‘labouring men’, collective movements, political forces, social and economic development, women's and local history have been the focus of attention. Nowadays, the problem of political leadership is considered primarily in institutional terms, and the emphasis given to personality has correspondingly diminished. With very few exceptions, biography has been relegated to the level of popular narrative. To raise the question of charisma in these circumstances is almost to violate a taboo, to address an embarrassing topic unworthy of scholarly attention. With the exception of the mainly theoretical work of Luciano Cavalli on the origins and permutations of charisma, there have been no sustained attempts to examine comparatively the various cases of charismatic leadership that Italian political life has produced. Thus, partly because charisma has been abandoned as a scholarly topic, it can appear inexplicable, inaccessible to the historical methods used for the study of social and political structures.


Biosystems ◽  
2018 ◽  
Vol 173 ◽  
pp. 36-51 ◽  
Author(s):  
Lev V. Beloussov ◽  
Tatiana G. Troshina ◽  
Nadezhda S. Glagoleva ◽  
Stanislav V. Kremnyov

2018 ◽  
Vol 71 (suppl 4) ◽  
pp. 1768-1773 ◽  
Author(s):  
Eluana Borges Leitão de Figueiredo ◽  
Ana Paula de Andrade Silva ◽  
Ana Lúcia Abrahão ◽  
Benedito Carlos Cordeiro ◽  
Isabel de Almeida Fonseca ◽  
...  

ABSTRACT Objective: to build municipal responsibility with the permanent education in health policy from the interaction between research and innovation of work practices. Method: experience reports structured through dialogic meetings that allowed the participative diagnosis and strategic administration considering research in health education. Results: from the activities and interactions, we identified active forces in the reinvention of training for workers in the municipal network of health services, in which we found three streams: “inside and outside interactions”, “movement towards meetings” and “strategic collective arrangements”. Final considerations: through action research and a collaborative critique, collective movements were constructed, they showed ways to produce new directions in health education and allowed the strategic creation of the Núcleo de Educação Permanente as a responsibility of the municipal government, not depending on Federal policies.


2017 ◽  
Vol 284 (1862) ◽  
pp. 20170347 ◽  
Author(s):  
Reena H. Walker ◽  
Andrew J. King ◽  
J. Weldon McNutt ◽  
Neil R. Jordan

In despotically driven animal societies, one or a few individuals tend to have a disproportionate influence on group decision-making and actions. However, global communication allows each group member to assess the relative strength of preferences for different options among their group-mates. Here, we investigate collective decisions by free-ranging African wild dog packs in Botswana. African wild dogs exhibit dominant-directed group living and take part in stereotyped social rallies: high energy greeting ceremonies that occur before collective movements. Not all rallies result in collective movements, for reasons that are not well understood. We show that the probability of rally success (i.e. group departure) is predicted by a minimum number of audible rapid nasal exhalations (sneezes), within the rally. Moreover, the number of sneezes needed for the group to depart (i.e. the quorum) was reduced whenever dominant individuals initiated rallies, suggesting that dominant participation increases the likelihood of a rally's success, but is not a prerequisite. As such, the ‘will of the group’ may override dominant preferences when the consensus of subordinates is sufficiently great. Our findings illustrate how specific behavioural mechanisms (here, sneezing) allow for negotiation (in effect, voting) that shapes decision-making in a wild, socially complex animal society.


2020 ◽  
Author(s):  
Hiroki Koda ◽  
Zin Arai ◽  
Ikki Matsuda

AbstractUnderstanding social organization is fundamental for the analysis of animal societies. In this study, animal single-file movement data ‒serialized order movements generated by simple bottom-up rules of collective movements— are informative and effective observations for the reconstruction of animal social structures using agent-based models. For simulation, artificial 2-dimensional spatial distributions were prepared with the simple assumption of clustered structures of a group. Animals in the group are either independent or dependent agents. Independent agents distribute spatially independently each one another, while dependent agents distribute depending on the distribution of independent agents. Artificial agent spatial distributions aim to represent clustered structures of agent locations ‒a coupling of “core” or “keystone” subjects and “subordinate” or “follower” subjects. Collective movements were simulated following two simple rules, 1) initiators of the movement are randomly chosen, and 2) the next moving agent is always the nearest neighbor of the last moving agents, generating “single-file movement” data. Finally, social networks were visualized, and clustered structures reconstructed using a recent major social network analysis (SNA) algorithm, the Louvain algorithm, for rapid unfolding of communities in large networks. Simulations revealed possible reconstruction of clustered social structures using relatively minor observations of single-file movement, suggesting possible application of single-file movement observations for SNA use in field investigations of wild animals.


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