OAuth 2.0 Token Exchange

2020 ◽  
Author(s):  
M. Jones ◽  
A. Nadalin ◽  
J. Bradley ◽  
C. Mortimore
Keyword(s):  
Token Exchange

scholarly journals Parrots do not show inequity aversion

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Anastasia Krasheninnikova ◽  
Désirée Brucks ◽  
Nina Buffenoir ◽  
Dániel Rivas Blanco ◽  
Delphine Soulet ◽  
...  
Keyword(s):  
Mammalian Species ◽  
Inequity Aversion ◽  
Comparative Approach ◽  
Cooperative Interactions ◽  
Unequal Treatment ◽  
Token Exchange ◽  
Group Members ◽  
Parrot Species ◽  
High Condition

Abstract Inequity aversion, the negative reaction to unequal treatment, is considered a mechanism for stabilizing cooperative interactions between non-kin group members. However, this might only be adaptive for species that switch cooperative partners. Utilizing a comparative approach, inequity aversion has been assessed in many mammalian species and recently also in corvids and one parrot species, kea, revealing mixed results. To broaden our knowledge about the phylogenetic distribution of inequity aversion, we tested four parrot species in the token exchange paradigm. We varied the quality of rewards delivered to dyads of birds, as well as the effort required to obtain a reward. Blue-headed macaws and African grey parrots showed no reaction to being rewarded unequally. The bigger macaws were less willing to exchange tokens in the “unequal” condition compared to the “equal high” condition in which both birds obtained high quality rewards, but a closer examination of the results and the findings from the control conditions reveal that inequity aversion does not account for it. None of the species responded to inequity in terms of effort. Parrots may not exhibit inequity aversion due to interdependence on their life-long partner and the high costs associated with finding a new partner.

scholarly journals Bonobos and orangutans, but not chimpanzees, flexibly plan for the future in a token-exchange task

2014 ◽  
Vol 17 (6) ◽  
pp. 1329-1340 ◽  
Author(s):  
Marie Bourjade ◽  
Josep Call ◽  
Marie Pelé ◽  
Myriam Maumy ◽  
Valérie Dufour
Keyword(s):  
Token Exchange ◽  
The Future

scholarly journals Attribute-Based Encryption for Access Control in Cloud Ecosystems

2021 ◽  
Author(s):  
giovanni bartolomeo
Keyword(s):  
Cloud Computing ◽  
Performance Evaluation ◽  
Access Control ◽  
Control Procedure ◽  
Exchange Flow ◽  
Token Exchange ◽  
Multiple Identity ◽  
Attribute Based Encryption ◽  
Services Integration ◽  
Enabling Services

<p>We introduce a distributed, fine-granuled, policy-based resource access control protocol leveraging on Attribute-Based Encryption. The protocol secures the whole access control procedure from the authorization issuer to the resource server providing grant confidentiality, proof of possession, antiforgery and may be implemented through a common web token exchange flow plus a HTTP basic authentication. As such, it may easily map to Cloud computing SaaS paradigms, enabling services integration into a single authorization-centric ecosystem even across multiple identity domains. We also present the results of a performance evaluation on a first prototype implementation.</p>

scholarly journals Chimpanzees Rarely Settle on Consistent Patterns of Play in the Hawk Dove, Assurance, and Prisoner's Dilemma Games, in a Token Exchange Task

2019 ◽  
Vol 6 (1) ◽  
pp. 48-70 ◽  
Author(s):  
Katie Hall ◽  
Mackenzie Smith ◽  
Jamie L. Russell ◽  
Susan P. Lambeth ◽  
Steven J. Schapiro ◽  
...  
Keyword(s):  
Prisoner's Dilemma ◽  
Prisoner’S Dilemma ◽  
Token Exchange

Using Tokens as Instructional Stimuli to Teach Academic Skills to Children during a Token-Exchange Period

1981 ◽  
Vol 52 (1) ◽  
pp. 223-233 ◽  
Author(s):  
Michael S. Kincaid ◽  
Paul Weisberg ◽  
Edward V. Sims
Keyword(s):  
Preschool Children ◽  
Academic Skills ◽  
Kindergarten Children ◽  
Instructional Materials ◽  
Letter Sounds ◽  
Token Exchange

In two separate studies, specialized tokens were employed as instructional materials to teach 12 colors to preschool children and 14 letter-sounds to kindergarten children. These children were given initially 24 to 30 tokens and given an opportunity to “purchase” various items by recognizing the designated information on each token. Independent probe sessions showed attainment of high levels of recognition for both colors and sounds. Labeling of the instructional stimuli, although not explicitly trained, developed spontaneously, probably as a result of the children's hearing the labels during recognition training and using them in extra-classroom settings.

scholarly journals Calculated reciprocity after all: computation behind token transfers in orang-utans

2008 ◽  
Vol 5 (2) ◽  
pp. 172-175 ◽  
Author(s):  
V Dufour ◽  
M Pelé ◽  
M Neumann ◽  
B Thierry ◽  
J Call
Keyword(s):  
Pongo Pygmaeus ◽  
The Other ◽  
Experimental Demonstration ◽  
Costs And Benefits ◽  
Animal Kingdom ◽  
Token Exchange ◽  
Over Time ◽  
Orang Utan

Transfers and services are frequent in the animal kingdom. However, there is no clear evidence in animals that such transactions are based on weighing costs and benefits when giving or returning favours and keeping track of them over time (i.e. calculated reciprocity). We tested two orang-utans ( Pongo pygmaeus abelii ) in a token-exchange paradigm, in which each individual could exchange a token for food with the experimenter but only after first obtaining the token from the other orang-utan. Each orang-utan possessed tokens valuable to their partner but useless to themselves. Both orang-utans actively transferred numerous tokens (mostly partner-valuable) to their partner. One of the orang-utans routinely used gestures to request tokens while the other complied with such requests. Although initially the transfers were biased in one direction, they became more balanced towards the end of the study. Indeed, data on the last three series produced evidence of reciprocity both between and within trials. We observed an increase in the number and complexity of exchanges and alternations. This study is the first experimental demonstration of the occurrence of direct transfers of goods based on calculated reciprocity in non-human-primates.

scholarly journals Attribute-Based Encryption for Access Control in Cloud Ecosystems

2021 ◽  
Author(s):  
giovanni bartolomeo
Keyword(s):  
Cloud Computing ◽  
Performance Evaluation ◽  
Access Control ◽  
Control Procedure ◽  
Exchange Flow ◽  
Prototype Implementation ◽  
Token Exchange ◽  
Multiple Identity ◽  
Digital Ecosystem ◽  
Attribute Based Encryption

We introduce a distributed, fine-granuled, policy-based resource access control protocol leveraging on Attribute-Based Encryption. The protocol secures the whole access control procedure from the authorization issuer to the resource server providing grant confidentiality, proof of possession, antiforgery and may be implemented through a developer familiar web token exchange flow plus a HTTP basic authentication flow. As such, it may map to Cloud computing SaaS paradigm, enabling microservices integration into a single, authorization-centric digital ecosystem, even across multiple identity domains. We also present the results of a performance evaluation on a first prototype implementation.

STEM: Secure Token Exchange Mechanisms

2020 ◽  
pp. 206-219
Author(s):  
Maneesh Darisi ◽  
Janhavi Savla ◽  
Mahesh Shirole ◽  
Sunil Bhirud
Keyword(s):  
Token Exchange
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