Fock space resolutions of the Virasoro highest weight modules with c<=1

We extend Felder's construction of Fock space resolutions for the Virasoro minimal models to all irreducible modules with $c\leq 1$. In particular, we provide resolutions for the representations corresponding to the boundary and exterior of the Kac table.Comment: 14 pages, revised versio

Overview of the NASA STARC-ABL (Rev. B) Advanced Concept

No abstract availabl

BRST Analysis of Physical States for 2D (Super) Gravity Coupled to (Super) Conformal Matter

We summarize some recent results on the BRST analysis of physical states of 2D gravity coupled to c<=1 conformal matter and the supersymmetric generalization.Comment: 11 page

An assistive robotic agent for pedestrian mobility

The goal of this project is to develop a pedestrian mobility aid for the elderly. In order for this type of assistive technology to be useful and accepted by its intended user community, it must enhance the abilities of users, not replace them. This leads to an agent architecture in which the agent must operate without hindering the user’s ability to take direct action when they choose. In other words, the agent cannot simply be a proxy for the user’s actions. The agent must select its own goals based on observations of its user’s actions. This is crucial not only because users may have diminished capacity to explain their actions to an agent, but because the ability of the agent to correctly interpret the user’s goals is tied to its ability to act while still allowing the user to “feel in control”. We present a mobility aid, i.e. a wheeled walker, which varies its goals and level of activity based on an estimation of its user’s intentions. The assistive agent often takes no action, allowing the user to be fully in control. When the ease or safety of the user’s travel is threatened, the agent attempts to influence the user’s motion based on its belief in the user’s goal. By varying the degree of autonomy, the walker can adjust to the user as their abilities change from day to day, or hour to hour. This prevents the walker from “trying to do too much”, allowing the user to feel as if they are in control and not being “lead”

Automated extraction of free surface topography using SfM-MVS photogrammetry

This is an Open Access article published by Elsevier and distributed under the terms of the Creative Commons Attribution Licence, CC BY 4.0, https://creativecommons.org/licenses/by/4.0/This paper describes a spatial measurement technique to measure the free surface of natural fluid flows in laboratory applications. This effective solution is based on “Structure-from- Motion/Multi-view Stereo” (SfM-MVS) photogrammetry and is capable of reconstructing water surface morphology, both at an instant and with a high spatial resolution. The efficiency and accuracy of the method is dependent upon the acquisition of high quality imagery (i.e. sharply focussed, no motion blur) with appropriate multi-frame camera coverage and configuration, and data processing must utilise appropriate camera calibration data. The potential of the technique for developing hydraulic understanding is demonstrated using two contrasting approaches. First, the water surface behind a living vegetation element is analysed along a single transect. Second, the full three-dimensional characteristics of the captured water surfaces are examined using statistical methods which demonstrate surface dissimilarity between vegetated and non-vegetated cases. The technique is transferable to real-world field sites

Hyperactivity, elevated dopaminergic transmission, and response to amphetamine in M1 muscarinic acetylcholine receptor-deficient mice

Acetylcholine serves an important modulatory role in the central nervous system. Pharmacological evidence has suggested that cholinergic activity can modulate central dopaminergic transmission; however, the nature of this interaction and the receptors involved remain undefined. In this study we have generated mice lacking the M1 muscarinic acetylcholine receptor and examined the effects of M1 deletion on dopaminergic transmission and locomotor behavior. We report that M1 deficiency leads to elevated dopaminergic transmission in the striatum and significantly increased locomotor activity. M1-deficient mice also have an increased response to the stimulatory effects of amphetamine. Our results provide direct evidence for regulation of dopaminergic transmission by the M1 receptor and are consistent with the idea that M1 dysfunction could be a contributing factor in psychiatric disorders in which altered dopaminergic transmission has been implicated