Boston College

About: Boston College is a education organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 9749 authors who have published 25406 publications receiving 1105145 citations. The organization is also known as: BC.

Positive Youth Development A View of the Issues

Abstract: The positive youth development (PYD) perspective is a strength-based conception of adolescence. Derived from developmental systems theory, the perspective stressed that PYD emerges when the potential plasticity of human development is aligned with developmental assets. The research reported in this special issue, which is derived from collaborations among multiple university and community-based laboratories, reflects and extends past theory and research by documenting empirically (a) the usefulness of applying this strength-based view of adolescent development within diverse youth and communities; (b) the adequacy of conceptualizing PYD through Five Cs (competence, confidence, connection, character, and caring); (c) the individual and ecological developmental assets associated with PYD; and (d) implications for community programs and social policies pertinent to youth.

Facial and vocal expressions of emotion.

Abstract: A flurry of theoretical and empirical work concerning the production of and response to facial and vocal expressions has occurred in the past decade. That emotional expressions express emotions is a tautology but may not be a fact. Debates have centered on universality, the nature of emotion, and the link between emotions and expressions. Modern evolutionary theory is informing more models, emphasizing that expressions are directed at a receiver, that the interests of sender and receiver can conflict, that there are many determinants of sending an expression in addition to emotion, that expressions influence the receiver in a variety of ways, and that the receiver's response is more than simply decoding a message.

How New Market Categories Emerge: Temporal Dynamics of Legitimacy, Identity, and Entrepreneurship in Satellite Radio, 1990–2005

Abstract: We theorize how new market categories emerge and are legitimated through a confluence of factors internal to the category (entrepreneurial ventures) and external to the category (interested audiences). Using qualitative and quantitative analyses and multiple data sources overtime, we study the evolution of the U.S. satellite radio market over its initial sixteen years. We offer convergent evidence to show that the legitimation of a new market category precipitates shifts in the focus of market actors' attention from the category as a whole to the differentiation of firms within. This effect was demonstrated for entrepreneurial identity claims, linguistic frames, and announcements of interorganizational affiliations and endorsements, as well as in the focal attention of media and financial audiences. We synthesize these findings to offer an integrated theoretical framework on new market category emergence and legitimation.

Institutional Logics and Institutional Pluralism: The Contestation of Care and Science Logics in Medical Education, 1967–2005:

Abstract: Although most studies underscore institutional change as replacement of one dominant logic for another and assume that professions are guided by a single logic, professions that operate in multiple...

Quantum Hall effects in a Weyl semimetal: Possible application in pyrochlore iridates

Abstract: There has been much interest in pyrochlore iridates A${}_{2}$Ir${}_{2}$O${}_{7}$ where both strong spin-orbital coupling and strong correlation are present. A recent local density approximation calculation [X. Wan, A. M. Turner, A. Vishwanath, and S. Y. Savrasov, Phys. Rev. B 83, 205101 (2011)] suggests that the system is likely in a three-dimensional topological semimetallic phase: a Weyl semimetal. Such a system has zero carrier density and arrives at the quantum limit even in a weak magnetic field. In this paper, we discuss two quantum effects of this system in a magnetic field: a pressure-induced anomalous Hall effect and a magnetic-field-induced charge density wave at the pinned wave vector connecting Weyl nodes with opposite chiralities. A general formula of the anomalous Hall coefficients in a Weyl semimetal is also given. Both proposed effects can be probed by experiments in the near future and can be used to detect the Weyl semimetal phase.