1,840 research outputs found
Plastic modes of listening: affordance in constructed sound environments
This thesis is concerned with how the ecological approach to perception with the inclusion of listening modes, informs the creation of sound art installation, or more specifically as referred to in this thesis as constructed sound environments.
The basis for the thesis has been a practiced based research where the aim and
purpose of the written part of this PhD project has been to critically investigate the area of sound art, in order to map various approaches towards participating in and listening to a constructed sound environment. The main areas has been the notion of affordance as coined by James J. Gibson (1986), listening modes as coined by Pierre Schaeffer (1966) and further developed by Michel Chion (1994), aural architects as coined by Blesser and Salter (2007) and the holistic approach towards understanding sound art developed by Brandon LaBelle (2006).
The findings within the written part of the thesis, based on a qualitative analysis, have informed the practice that has resulted in artefacts in the form of seven constructed sound environments that also functions as case studies for further analysis.
The aim of the practice has been to exemplify the methodology, strategy and progress behind the organisation and construction of sound environments
The research concerns points towards the acknowledgment of affordance as the
crucial factor in understanding a constructed sound environment. The affordance
approach govern the idea that perceiving a sound environment is a top-down process where the autonomic quality of a constructed sound environment is based upon the perception of structures of the sound material and its relationship with speaker placement and surrounding space. This enables a researcher to side step the
conflicting poles of musical/abstract and non-musical/realistic classification of sound elements and regard these poles as included, not separated elements in the analysis of a constructed sound environment
Penetration of fusidic acid and rifampicin into cerebrospinal fluid in low-grade inflammatory meningitis caused by Staphylococcus epidermidis
AbstractCerebrospinal fluid (CSF) concentration-time curves of rifampicin and fusidic acid were studied in a patient with post-operative meningitis caused by Staphylococcus epidermidis. The patient was treated with this combination of antimicrobial agents because of a severe hypersensitivity reaction to vancomycin. Peak CSF concentrations of rifampicin exceeded the MIC by > 60-fold, while those of fusidic acid just reached the MIC. CSF concentrations of fusidic acid were relatively stable within the range reported for patients with uninflamed meninges, but serum levels were surprisingly low. An increase in the metabolism of fusidic acid induced by rifampicin cannot be excluded
Differential pulmonary and circulatory effects of preventive lung protective ventilation in an experimental postoperative sepsis model
Deuteron photo-disintegration with polarised photons in the energy range 30 - 50 MeV
The reaction d(\vec\gamma,np) has been studied using the tagged and polarised
LADON gamma ray beam at an energy 30 - 50 MeV to investigate the existence of
narrow dibaryonic resonances recently suggested from the experimental
measurements in a different laboratory. The beam was obtained by Compton
back-scattering of laser light on the electrons of the storage ring ADONE.
Photo-neutron yields were measured at five neutron angle \vartheta_n = 22,
55.5, 90, 125 and 157 degrees in the center of mass system.Our results do not
support the existence of such resonances.Comment: 16 pages, Latex, 22 figures, 1 table. Nucl. Phys. A to appea
Second-order corrections to mean field evolution for weakly interacting Bosons. I
Inspired by the works of Rodnianski and Schlein and Wu, we derive a new
nonlinear Schr\"odinger equation that describes a second-order correction to
the usual tensor product (mean-field) approximation for the Hamiltonian
evolution of a many-particle system in Bose-Einstein condensation. We show that
our new equation, if it has solutions with appropriate smoothness and decay
properties, implies a new Fock space estimate. We also show that for an
interaction potential , where is
sufficiently small and , our program can be easily
implemented locally in time. We leave global in time issues, more singular
potentials and sophisticated estimates for a subsequent part (part II) of this
paper
DAP12 Signaling Directly Augments Proproliferative Cytokine Stimulation of NK Cells during Viral Infections
Abstract
NK cells vigorously proliferate during viral infections. During the course of murine CMV infection, this response becomes dominated by the preferential proliferation of NK cells that express the activation receptor Ly49H. The factors driving such selective NK cell proliferation have not been characterized. In this study, we demonstrate that preferential NK cell proliferation is dependent on DAP12-mediated signaling following the binding of Ly49H to its virally encoded ligand, m157. Ly49H signaling through DAP12 appears to directly augment NK cell sensitivity to low concentrations of proproliferative cytokines such as IL-15. The impact of Ly49H-mediated signaling on NK cell proliferation is masked in the presence of high concentrations of proproliferative cytokines that nonselectively drive all NK cells to proliferate
- …