The establishment of a functional vascular system requires multiple complex steps throughout embryogenesis, from endothelial cell (EC) specification to vascular patterning into venous and arterial hierarchies. Following the initial assembly of ECs into a network of cord‐like structures, vascular expansion and remodeling occur rapidly through morphogenetic events including vessel sprouting, fusion, and pruning. In addition, vascular morphogenesis encompasses the process of lumen formation, critical for the transformation of cords into perfusable vascular tubes. Studies in mouse, zebrafish, frog, and human endothelial (...) cells have begun to outline the cellular and molecular requirements underlying lumen formation. Although the lumen can be generated through diverse mechanisms, the coordinated participation of multiple conserved molecules including transcription factors, small GTPases, and adhesion and polarity proteins remains a fundamental principle, leading us closer to a more thorough understanding of this complex event. (shrink)

After decades of single issue movements and identity politics on the U.S. left, the series of large demonstrations beginning in 1999 in Seattle have led many to wonder if activist politics can now come together around a common theme of global justice. This book pursues the prospects for progressive political movements in the 21st century with case studies of ten representative movements, including the anti-globalization forces, environmental interest groups, and new takes on the peace movement.

Early parental loss or trauma has been proposed by some as a significant factor in the adoption of atheist, non-theist, or irreligious worldviews. Relevant empirical data, however, have been limited, impressionistic, methodologically questionable, or limited to historically prominent figures. Survey data from the GSS and a study of affirmatively non-theistic and irreligious secular group affiliates in the U.S. do not provide evidence of disproportionately high rates of early parental loss among individuals who describe themselves as “atheist” or “anti-religious,” reject belief (...) in God, or express strong anger about religion. Loss of a parent or other loved may play a role in turns toward, as well as away from, God and religion for some. There is also evidence of comparatively high rates of parental loss in the lives of historically prominent figures, both religious and non-religious. Present results, however, do not support the hypothesis that early loss is a disproportionately frequent experience in the lives of atheistic or irreligious people. (shrink)

There are signs of both secularization and religionization in the world today. Consistent with the modernization-secularization thesis, structural factors such as increasing economic security, societal complexity, and information flow are broadly associated with greater personal autonomy, worldview individualization, and erosion of some religious forms. At the same time, ‘counter-secular’ reassertions or transformations of religion have arisen for psychological, cultural, and political reasons. Amid these broad developments, active or public forms of atheism have also emerged, particularly in Europe and the Anglophone (...) world. Self-conscious, assertive atheism and other forms of philosophical or ideological secularism have both intended and unintended effects in the processes of secularization and religionization. But a quieter and potentially more pervasive result of all these forces may be greater worldview diversity and individualization across the secular-religious spectrum. (shrink)

Compared the use of unit regression weights with least squared error multiple regression weights. 100 sample correlation matrices computed from randomly drawn samples from a multivariate normal distribution were employed, with the sample size varying from 25-1,000 and number of variables from 2-10. In addition, correlation matrices were also sampled from published data. The results of comparing the efficiency of the 2 methods of weighting are presented for correlation matrices with and without the effect of suppressor variables. Use of these (...) findings is discussed. (shrink)

The attempt to find usable diagrams fornterms of the sort devised by John Venn seems to have originated with Venn himself, who published diagrams for up to five classes (the fifth class, however, was shaped like a doughnut, and contained an area outside itself — like the hole in the doughnut). Venn then suggested that “if we wanted to use a diagram forsixterms (x, y, z, w, v, u) the best plan would probably be to taketwofive-term figures, one for theupart (...) and one for the non-upart of all the other combinations …” Such a method would, as Venn admits, be somewhat confusing to the eye, and thus fail to fulfil one of the major purposes of the diagram; nevertheless, it is a method which could be extended to covernclasses.Venn also suggests (but without illustration) another method for drawing diagrams fornterms: “… the rule of formation would be very simple. We should merely have to begin by drawing any closed figure, and then proceed to draw others subject to the one condition that each intersect once, and once only, all the existing subdivisions produced by those which had gone before.” Then, in a rather surprising footnote, he adds: “It will be found that when we adhere to continuous figures, instead of the discontinuous five-term figure given above, there is a tendency for the resultant outlines thus successively drawn to assume a comb-like shape after the first four or five. If we begin by circles or other rounded figures the teeth are curved, if by parallelograms then they are straight. (shrink)

This article presents results from a multidisciplinary research project on the integration and transfer of language knowledge into robots as an empirical paradigm for the study of language development in both humans and humanoid robots. Within the framework of human linguistic and cognitive development, we focus on how three central types of learning interact and co-develop: individual learning about one's own embodiment and the environment, social learning (learning from others), and learning of linguistic capability. Our primary concern is how these (...) capabilities can scaffold each other's development in a continuous feedback cycle as their interactions yield increasingly sophisticated competencies in the agent's capacity to interact with others and manipulate its world. Experimental results are summarized in relation to milestones in human linguistic and cognitive development and show that the mutual scaffolding of social learning, individual learning, and linguistic capabilities creates the context, conditions, and requisites for learning in each domain. Challenges and insights identified as a result of this research program are discussed with regard to possible and actual contributions to cognitive science and language ontogeny. In conclusion, directions for future work are suggested that continue to develop this approach toward an integrated framework for understanding these mutually scaffolding processes as a basis for language development in humans and robots. (shrink)

Life goals or aspirations can be distinguished as intrinsic or extrinsic, with different implications for well-being. In this study we used network analysis to reexamine this intrinsic-extrinsic distinction, illustrating how novel candidate aspirations can be mapped along this dimension using innovative methods. We identify four previously unexamined life aspirations, predicting that aspiring for power and social adherence would group with extrinsic goals, whereas aspiring for self-expression and mastery would group with intrinsic goals. In two samples (n = 196; n = (...) 346) we analyze both the original life-goal variables and these novel aspirations using factor analysis, multidimensional scaling, circumplex modeling, and a network analysis using a graphical least absolute shrinkage and selection operator (glasso) to estimate the network structure of aspirations using EBIC. Replicating past intrinsic-extrinsic distinctions, all four methods further classified power and social adherence as extrinsic goals, and self-expression and mastery as intrinsic goals. The intrinsic-extrinsic distinction was also clearly visible in the network analysis. Finally, consistent with hypotheses, power and social adherence were unrelated to wellness indicators, whereas self-expression and mastery correlated positively with well-being indicators and negatively with ill-being indicators, supporting their hypothesized nature as extrinsic and intrinsic, respectively. (shrink)

The Unknowable, arguably the greatest Russian philosophical work of the 20th century, was the culmination of S. L. Frank's intellectual and spiritual development, the boldest and most imaginative of all his writings, containing a synthesis of epistemology, ontology, social philosophy, religious philosophy, and personal spiritual experience.

This volume contains an array of essays that reflect, and reflect upon, the recent revival of scholarly interest in the self and consciousness. Various relevant issues are addressed in conceptually challenging ways, such as how consciousness and different forms of self-relevant experience develop in infancy and childhood and are related to the acquisition of skill; the role of the self in social development; the phenomenology of being conscious and its metapsychological implications; and the cultural foundations of conceptualizations of consciousness. Written (...) by notable scholars in several areas of psychology, philosophy, cognitive neuroscience, and anthropology, the essays are of interest to readers from a variety of disciplines concerned with central, substantive questions in contemporary social science, and the humanities. (shrink)

An English double-embedded relative clause from which the middle verb is omitted can often be processed more easily than its grammatical counterpart, a phenomenon known as the grammaticality illusion. This effect has been found to be reversed in German, suggesting that the illusion is language specific rather than a consequence of universal working memory constraints. We present results from three self-paced reading experiments which show that Dutch native speakers also do not show the grammaticality illusion in Dutch, whereas both German (...) and Dutch native speakers do show the illusion when reading English sentences. These findings provide evidence against working memory constraints as an explanation for the observed effect in English. We propose an alternative account based on the statistical patterns of the languages involved. In support of this alternative, a single recurrent neural network model that is trained on both Dutch and English sentences is shown to predict the cross-linguistic difference in the grammaticality effect. (shrink)