Results 31 to 40 of about 901,958 (279)

Professional Volunteers

open access: yesVoices in Bioethics, 2014
In 1939, Dr. William Osler Abbott used his opportunity with an audience at the Charaka Club in New York to recount the process for conducting necessary clinical research for his new gastroenterological technique for treating obstructions in the small ...
Sebastian Agredo
doaj   +1 more source

The evolution of cooperation and altruism--a general framework and a classification of models. [PDF]

open access: yes, 2006
One of the enduring puzzles in biology and the social sciences is the origin and persistence of intraspecific cooperation and altruism in humans and other species.
Axelrod R.   +20 more
core   +1 more source

Evolution and Culture [PDF]

open access: yes, 2011
The goal of cross-cultural psychology to identify and explain similarities and differences in the behavior of individuals in different cultures requires linking human behavior to its context (Cole, Meshcheryakov & Ponomariov, 2011).
Chasiotis, Athanasios
core   +3 more sources

Towards the convergent therapeutic potential of G protein‐coupled receptors in autism spectrum disorders

open access: yesBritish Journal of Pharmacology, EarlyView., 2023
Abstract Autism spectrum disorders (ASDs) are diagnosed in 1/100 children worldwide, based on two core symptoms: deficits in social interaction and communication, and stereotyped behaviours. G protein‐coupled receptors (GPCRs) are the largest family of cell‐surface receptors that transduce extracellular signals to convergent intracellular signalling ...
Anil Annamneedi   +6 more
wiley   +1 more source

To cooperate or to defect? Altruism and reputation [PDF]

open access: yesPhysica A 388 (2009) 3581, 2009
The basic problem in the cooperation theory is to justify the cooperation. Here we propose a new approach, where players are driven by their altruism to cooperate or not. The probability of cooperation depends also on the co-player's reputation. We find that players with positive altruism cooperate and met cooperation. In this approach, payoffs are not
arxiv   +1 more source

The Economics of Morality [PDF]

open access: yes, 2016
Altruism is embedded in our biology and in our culture. We offer our bus seats to the disabled and elderly, give directions to disoriented tourists, and donate a portion of our income charity.
Bowen, Dillon
core  

Emergence, hierarchy and top-down causation in evolutionary biology [PDF]

open access: yes, 2011
The concept of emergence and the related notion of ‘downward causation’ have arisen in numerous branches of science, and have also been extensively discussed in philosophy.
Okasha, Samir
core   +1 more source

PPY‐Induced iCAFs Cultivate an Immunosuppressive Microenvironment in Pancreatic Cancer

open access: yesAdvanced Science, EarlyView.
Pancreatic ductal adenocarcinoma features abundant stromal components that hinder therapy efficacy. Single‐cell RNA sequencing analysis combined with experiments identified PPY, a gastrointestinal hormone, as a novel inducer of immunosuppressive iCAFs. Mechanistic studies revealed that PPY activates the non‐canonical NF‐κB pathway via EGFR.
Mengdie Cao   +14 more
wiley   +1 more source

Solving the prisoner's dilemma trap in Hamilton's model of temporarily formed random groups [PDF]

open access: yesJournal of Theoretical Biology 595 (2024) 111946
Explaining the evolution of cooperation in the strong altruism scenario, where a cooperator does not benefit from her contribution to the public goods, is a challenging problem that requires positive assortment among cooperators (i.e., cooperators must tend to associate with other cooperators) or punishment of defectors.
arxiv   +1 more source

Stochastic group selection model for the evolution of altruism [PDF]

open access: yes, 1999
We study numerically and analytically a stochastic group selection model in which a population of asexually reproducing individuals, each of which can be either altruist or non-altruist, is subdivided into $M$ reproductively isolated groups (demes) of size $N$.
arxiv   +1 more source

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