Past Monday Seminars // Browsing posts in Past Monday Seminars
Trust and Influence in the Complex Network of Social Media – 4/30/12
William Rand Asst. Prof. in Marketing, Decision, Operations & Information Technology, and Computer Science Director, Center for Complexity in Business University of Maryland. The dramatic feature of social media is that it gives everyone a voice; anyone can speak out and express their opinion to a crowd of followers with little or no cost or ...
Not too cool, not too hot: homeostatic regulation of neuronal activity in the hippocampal circuit – 4/16/12
Daniel Pak, Associate Professor of Pharmacology and Physiology, Georgetown University Medical Center. Neurons in the central nervous system are constantly bombarded by signals emanating from other neurons within a densely interconnected network. Such intraneuronal communication, which occurs at sites of cell-to-cell contact called synapses, is essential for responding appropriately to environmental stimuli, for information processing, ...
A Novel Mechanism for Neuronal Bursting and Seizing – 4/9/12
Ernest Barreto. School of Physics, Astronomy, and Computational Sciences, and The Krasnow Institute for Advanced Study. George Mason University. It is well-known that when a neuron fires an action potential, sodium and potassium ions cross the neuron’s membrane. This process was described quantitatively by Hodgkin and Huxley in the 1950s. But shouldn’t this flow of ...
Dynamic Network Analysis of Conflict Situations – 4/2/12
Kathleen Carley Professor, School of Computer Science, Director, Center for Comptational Analysis of Social and Organizational, Systems Carnegie Mellon University. Conflict situations, either ongoing as in the case of the Sudan or emergent as in the Arab Spring, are situations in which leaders emerge and beliefs change, sometimes quite radically. In this talk, a social ...
Discovering the Human Connectome – 3/26/12
Olaf Sporns, Provost Professor, Dept. of Psychological and Brain Sciences, Indiana University, Recent advances in network science have greatly increased our understanding of the structure and function of many networked systems, ranging from transportation networks, to social networks, the internet, ecosystems, and biochemical and gene transcription pathways. Network approaches are also increasingly applied to the ...
A Viral Vector Gene Transfer Approach to Study the Cell-Type Specific Expression of Oxytocin and Vasopressin Genes in the CNS in Vivo. – 3/19/12
Harold Gainer Senior Investigator, Molecular Neuroscience Section Laboratory of Neurochemistry, National Institute of Neurological Disorders and Stroke, Neuronal identity or phenotype is largely determined by the constellation of specific genes that are expressed by the specific cell-type. The magnocellular (MCN) oxytocin (OXT)- and vasopressin (AVP)-synthesizing neurons in the hypothalamus exhibit many physiological differences that distinguish ...
Labor and Firm Dynamics: A Computational Study of Economic Networks with International Micro-data – 3/05/12
Omar A. Guerrero, PhD Candidate in Computational Social Science, Krasnow Institute for Advanced Study, George Mason University, Job creation is intimately related to economic growth. Policies dealing with unemployment often have job creation as their main objective. However, the myriad ways labor is reallocated between firms, between sectors, even between countries, is not well understood. When people change ...
The Roles of Dopamine Systems in Reward and Addiction – 2/27/12
Roy Wise Senior Investigator, National Institute on Drug Abuse. While they do so through quite different receptor-mediated actions, addictive drugs are habit-forming because, in one way or another, they activate brain circuitry in which neurotransmitter dopamine plays a major role. A topic of current interest is how rapidly cocaine enters the brain and initiates its ...
Modeling Terror Group Behavior and Shaping Policy against them – 2/13/12
V.S. Subrahmanian Professor, Computer Science Dept. & University of Maryland Institute for Advanced Computer Studies. Director, Center for Digital International Government Co-Director, Lab for Computational Cultural Dynamics University of Maryland Dr. Subrahmanian will describe how Temporal-Probabilistic (TP) logics can be used to model the behavior of terror groups in order to understand how the ...
Function and plasticity in auditory processing: Imaging and neurophysiology – 2/6/12
Josef Rauschecker, Professor, Department of Neuroscience, Director, Program in Cognitive and Computational Systems (PICCS), Laboratory for Integrative Neuroscience and Cognition, Georgetown University Dr. Rauschecker’s research interests are functional organization and plasticity in the central nervous system. His research aims to explicate the brain’s means of implimentation for auditory perception and language. His laboratory is one ...
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