This paper addresses the existence of Hopf bifurcations in a directed acyclic network of neurons, each of them being modeled by a Hindmarsh–Rose neuronal model. The bifurcation parameter is the small parameter corresponding to the ratio of time scales between the fast and the slow dynamics. We first prove that, under certain hypotheses, the single uncoupled neuron can undergo a Hopf bifurcation. Hopf bifurcation occurrences in a directed acyclic network of HR neurons are then discussed. Numerical simulations are carried out (...) to observe these bifurcations and to illustrate the theoretical results. (shrink)

AsbtractThis article does exactly what the title suggests: It reads Derrida’s idea of close reading into Doug Lemov’s idea of close reading by close reading Lemov’s definition for close reading. Building on work that considers poststructural approaches in reading classrooms, I engage Lemov and Derrida in a conversation about the meaning and uses of reading as a classroom practice. This approach asks questions about who gets to read, where, and in what ways. Within this conversation, I aim to open new (...) considerations of reading in classrooms in public schools in the U.S. The article concludes with some possibilities and risks of pursuing these ideas, focusing on the potential of new inquiries into the ‘right’ to read. (shrink)

Rapidly advancing studies on rhodopsin have focused on new strategies for crystallization of this integral membrane protein for x-ray analysis and on alternative methods for structural determination from nuclear magnetic resonance data. Functional studies of the interactions between the apoprotein and its chromophore have clarified the role of the chromophore in deactivation of opsin and in photoactivation of the pigment.

Исследование посвящено философскому осознанию природы духовности человека. Автор рассматривает духовность внутреннего мира человека как единство высших чувств души и нравственного сознания. Для специалистов в области философии, методологии науки.

In his essay “Goddesses of the Twenty‐first Century,” R. Buckminster Fuller's use of woman and goddess as metaphor suggests a fruitful source of images illuminating synergetic principles. Using five images, clustered as odyvessel‐matrix, the article suggests an epistemology and a heuristic for connecting the personal‐physical and the universal‐metaphysical. These images are (1) the Egyptian goddess Nut, (2) the Greek earth goddesses, (3) Neolithic Maltese goddess temples, (4) the double spiral, and (5) the Apollo Mission's Earth photographs. These images are intended (...) as transformational synergetic/ecofeminist figures to replace images of deprivation, alienation, and destruction with images of abundance, intimacy, and co‐creation. (shrink)

The first thorough study in English of the multi-faceted system of Mou Zongsan, this book examines key influences on the New Confucian thinker and introduces his Kantian- and Mahāyāna Fo-inflected moral metaphysical reading of the Lu-Wang Learning of the Mind.

In this age of DNA computers and artificial intelligence, information is becoming disembodied even as the "bodies" that once carried it vanish into virtuality. While some marvel at these changes, envisioning consciousness downloaded into a computer or humans "beamed" _Star Trek_-style, others view them with horror, seeing monsters brooding in the machines. In _How We Became Posthuman,_ N. Katherine Hayles separates hype from fact, investigating the fate of embodiment in an information age. Hayles relates three interwoven stories: how information lost (...) its body, that is, how it came to be conceptualized as an entity separate from the material forms that carry it; the cultural and technological construction of the cyborg; and the dismantling of the liberal humanist "subject" in cybernetic discourse, along with the emergence of the "posthuman." Ranging widely across the history of technology, cultural studies, and literary criticism, Hayles shows what had to be erased, forgotten, and elided to conceive of information as a disembodied entity. Thus she moves from the post-World War II Macy Conferences on cybernetics to the 1952 novel _Limbo_ by cybernetics aficionado Bernard Wolfe; from the concept of self-making to Philip K. Dick's literary explorations of hallucination and reality; and from artificial life to postmodern novels exploring the implications of seeing humans as cybernetic systems. Although becoming posthuman can be nightmarish, Hayles shows how it can also be liberating. From the birth of cybernetics to artificial life, _How We Became Posthuman_ provides an indispensable account of how we arrived in our virtual age, and of where we might go from here. (shrink)

We argue that the appraisal of models in social epistemology requires conceiving of them as argumentative devices, taking into account the argumentative context and adopting a family-of-models perspective. We draw up such an account and show how it makes it easier to see the value and limits of the use of models in social epistemology. To illustrate our points, we document and explicate the argumentative role of epistemic landscape models in social epistemology and highlight their limitations. We also claim that (...) our account could be fruitfully used in appraising other models in philosophy and science. (shrink)

Tipy mirovozzreniĭ -- Chuvstvennai︠a︡, intellektualʹnai︠a︡ i misticheskai︠a︡ intuit︠s︡ii︠a︡ -- Ideal-realizm.