Mathematical Biology Monday, September 14, 2015, 12:00pm-1:00pm 335 West Hall Bard Ermentrout (University of Pittsburgh) Keeping the beat: Homeostatic frequency control in coupled oscillators When nonlinear oscillators are forced or coupled they will generally lock if the frequency is in a narrow enough range. However, humans and other animals such as fireflies and Snowball the dancing cockatoo...

With the increasing empirical success of distributional models of compositional semantics, it is timely to consider the types of textual logic that such models are capable of capturing. In this paper, we address shortcomings in the ability of current models to capture logical operations such as negation. As a solution we propose a tripartite formulation for a continuous vector space representat...

Cocoa butter was crystallized statically from the melt to various temperatures in the range of -20 to 26 °C and annealed for up to 45 days. During this period, the polymorphism of the solid state was monitored using differential scanning calorimetry and powder X-ray diffraction. Moreover, the microstructure of the materials was imaged using polarized light microscopy. Below -15 °C, a mixture of...

The hypothesis that the naturally occurring analgesic peptide, â-endorphin, is released in the brain in response to pain had never been directly validated. In this study, we applied a brain microdialysis method for monitoring â-endorphin release in vivo, to test this hypothesis in the brains of conscious, freely moving rats. Herein we first show that endogenous â-endorphin can be measured in vi...

Background: Changes in body composition may be used for monitoring progression/ regression of a disease. Prompt γ-rays in vivo neutron activation analysis (IVNAA) has been widely used for the measurement of body composition in recent years.Objective: In this paper, we tried to improve the safety of IVNAA operator.Methods: The most important factor for reducing the operator receiving dose is th...

â  â  â  â  narration elements in the story of mousa and khezr â  (based on character and time) â  â  sayyed reza solayman zadeh najafi * â  azim tahmasbi ** â  â  abstract â  â  the story consists of elements such as character and time and the story features. characters make story’s structure and there is not story without character . time element is also necessary for the story . each story...

       Undoubtedly, the social world is changing and one of the main factors of transformation in the current world is new and modern technological achievements which are considered as modern media. However, due to their emerging nature of these media, there has been no agreement on their positive or negative effects and there have been different ideas about the effect of these modern media...

in this study, we aimed to reconstruct the mean, maximum mean and ‎minimum mean temperature from the chronology of tree rings width of two ‎quercus persica sites in dena region, where efficient climatic data have a ‎short period (1982-2011). the duration of common chronology of the sites ‎is 131 years (1881-2011).considering the strong correlation between ‎climatic data and growth rin...