The Tit-for-Tat strategy implemented in BitTorrent (BT) clients is generally considered robust to selfish behaviours. The authors of [1] support this belief studying how Tit-for-Tat can affect selfish peers who are able to set their upload bandwidth. They show that there is a “good” Nash Equilibrium at which each peer uploads at the maximum rate. In this paper we consider a different game where...

This paper proposes a blockchain based trust management method for agents in multi-agent system (MAS). In this work, three objectives are achieved: trust, cooperation and privacy. The of depends on the credibility evaluators, which is verified using proposed methods distortion, consistency reliability. To enhance between agents, tit-3-for-tat (T3FT) repeated game strategy developed. more forgiv...

The authors address locomotion in social dilemmas, examining the influence of social value orientation (prosocial, individualistic, and competitive orientations) and partner's strategy (100% cooperation, tit for tat, and 100% noncooperation) on cooperative behavior and locomotion to enhanced or reduced levels of interdependence (tendencies toward approach vs. avoidance). Extending prior researc...

We seek a route to the equilibrium where all the agents cooperate in the iterated prisoner's dilemma game on a two-dimensional plane, focusing on the role of tit-for-tat strategy. When a time horizon, within which a strategy can recall the past, is one time step, an equilibrium can be achieved as cooperating strategies dominate the whole population via proliferation of tit-for-tat. Extending th...

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BACKGROUND AND OBJECTIVE Central nervous system (CNS) involvement in patients diagnosed with acute leukemias (AL) is an uncommon complication with poor prognosis. The indication and the schedules of prophylaxis and treatment of CNS involvement in AL are not homogenous among countries and within the same country. The aim of this prospective longitudinal study was to analyze and report the practi...

Ayer Hitam Utara Forest Reserve (AHUFR) is the largest and last existing peat swamp forest in Johor. Peat are known to be very important as it serve a home variety of flora fauna, especially bird species. Other than that, also prone fire become major threat during hot weather or drought (El Nino events). This problem will cause biodiversity loss threaten bird’s habitat behaviour since some bird...

In this study, we examined heavy-metal concentrations in feathers of nestling great tits Parus major and blue tits Cyanistes caeruleus at two different sites (urban parkland vs. deciduous forest) located in the Łódź agglomeration in relation to interyear variation. We found that tit species did not differ significantly in lead and cadmium concentrations. Zinc concentration was significantly hig...

An experimental analysis of the movements of predator-approaching fish is presented. The experiments evaluated two competing hypotheses. (1) Predator-approaching fish play the gametheoretical strategy Tit for Tat. Alternatively, (2) the movements of predator-approaching fish superficially resemble Tit for Tat, because fish independently orient to a predator and simultaneously attempt to stay cl...

Axelrod's celebrated Prisoner's Dilemma computer tournaments, published in the early 1980s, were designed to find effective ways of acting in everyday interactions with the strategic properties of the iterated Prisoner's Dilemma game. The winner of both tournaments was tit-for-tat, a program that cooperates on the first round and then, on every subsequent round, copies the co-player's choice fr...