The goal of this article is to clarify the relationship between the topos of triads and the neo-Riemannian PLR-group. To do this, we first develop some theory of generalized interval systems: 1) we prove the well known fact that every pair of dual groups is isomorphic to the left and right regular representations of some group (Cayley’s Theorem), 2) given a simply transitive group action, we sh...

The matching problem is a notorious combinatorial optimization problem that has attracted for many years the attention of the statistical physics community. Here we analyze the Euclidean version of the problem, i.e., the optimal matching problem between points randomly distributed on a d-dimensional Euclidean space, where the cost to minimize depends on the points' pairwise distances. Using May...

Plants are increasingly used as alternative expression hosts for the production of recombinant proteins offering many advantages including higher biomass and the ability to perform post-translational modifications on complex proteins. Key challenges for optimized accumulation of recombinant proteins in a plant system still remain, including endogenous plant proteolytic activity, which may sever...

Acetic acid-induced writhing, hot-plate, carrageenan-induced pleurisy, formalin-induced pain, croton oil-induced ear edema, vascular permeability tests and phospholipase A2 activity assay were used to study the analgesic and/or antiinflammatory activity of the hydromethanolic fraction of ethanolic extract from Spiranthera odoratissima A. St.-Hil., Rutaceae, leaves (HMF) and its subfraction (sub...

The voltage-gated Na and K channels in neurons are responsible for action potential generation. Because ion channels open and close in a stochastic fashion, spontaneous (ectopic) action potentials can result even in the absence of stimulation. While spontaneous action potentials have been studied in detail in single-compartment models, studies on spatially extended processes have been limited. ...

Abstract Let k ≥ 2 {k\geq 2} and n 1 {n\geq 1} be any integers. In this paper, we prove that all Hecke operators act trivially on the space of ordinary Drinfeld cuspforms level <m:mi mathvariant="n...

the purpose of this study was to examine how four teachers used the seven processes of videotape analysis to develop an analytic approach and reflective thinking towards their teaching. the study was organized within video clubs and was used to describe the interactions among four teachers about their experiences at a language institute. data were gathered through videotaped recordings of lesso...

We consider texture images as a composition of manifolds in the feature-space. This geometrical interpretation leads to a natural way for texture enhancement. A flow, based on manifold volume minimization, yields a natural enhancement procedure for texture images. The 2D Gabor-Morlet transform is first used to decompose the image into subband images, where each sub-image corresponds to a differ...

Recognizing where action units begin and end is an earlydeveloping skill that supports inferences about goals motivating others' action. One notable feature of goal-directed action is that segments are organized hierarchically. That is, action is interpreted as structured with respect to the goals and sub-goals of an actor, which can be recognized as corresponding to coarserand finer-grained ac...

background: lithium has been the treatment of choice for bipolar disorder (bd) for many years. although erectile dysfunction is a known adverse effect of this drug, the mechanism of action by which lithium affects erectile function is still unknown. objective: the aim was to investigate the possible involvement of nitric oxide (no) in modulatory effect of lithium on penile erection (pe). we fur...