3,296 research outputs found
When to Make the Sensory Social: Registering in Face-to-Face Openings
This article analyzes naturally occurring video-recorded openings during which participants make the sensory social through the action of registering—calling joint attention to a selected, publicly perceiv- able referent so others shift their sensory attention to it. It examines sequence-initial actions that register referents for which a participant is regarded as responsible. Findings demonstrate a systematic preference organization which observably guides when and how people initiate registering sequences sensitive to ownership of, and displayed stance toward, the target referent. Analysis shows how registering an owned referent achieves intersubjectivity and puts involved participants’ face, affiliation, and social relationship on the line. A video abstract is available at https://youtu.be/rNL70vawG3
Being a Good Parent in Parent-Teacher Conferences
This research advances our understanding of what constitutes a good parent in the course of actual social interaction. Examining video-recorded naturally occurring parent-teacher conferences, this article shows that, while teachers deliver student-praising utterances, parents may display that they are gaining knowledge; but when teachers’ actions adumbrate student-criticizing utterances, parents systematically display prior knowledge. This article elucidates the details of how teachers and parents tacitly collaborate to enable parents to express student-troubles first, demonstrating that parents display competence -- appropriate involvement with children’s schooling -- by asserting their prior knowledge of, and/or claiming/describing their efforts to remedy, student-troubles. People (have to) display competence generically in interaction. By explicating how parents display competence, this article offers insights for several areas of communication research
When to make the sensory social: Registering in copresent openings
This article provides the first detailed empirical analysis of naturally-occurring videorecorded openings during which participants make the sensory social through the action of registering – calling joint attention to a selected, publicly perceivable referent so others shift their sensory attention to it. Examining sequence-initial actions that register referents for which a participant is regarded as responsible, this study elucidates a systematic preference organization which observably guides when and how people initiate registering sequences sensitive to both referent ownership and referent value. Analysis shows how choosing to register an owned referent puts involved participants’ face, affiliation, and social relationship on the line
Ergodic Properties of the Spin - Boson System
We investigate the dynamics of a 2-level atom (or spin-1/2) coupled to a
mass-less bosonic field at positive temperature. We prove that, at small
coupling, the combined quantum system approaches thermal equilibrium. Moreover
we establish that this approach is exponentially fast in time. We first reduce
the question to a spectral problem for the Liouvillean, a self-adjoint operator
naturally associated with the system. To compute this operator, we invoke
Tomita-Takesaki theory. Once this is done we use complex deformation techniques
to study its spectrum. The corresponding zero temperature model is also
reviewed and compared.Comment: 31 pages, postscrip
Temperature and Voltage Probes Far from Equilibrium
We consider an open system of non-interacting electrons consisting of a small
sample connected to several reservoirs and temperature or voltage probes. We
study the non-linear system of equations that determines the probe parameters.
We show that it has a unique solution, which can be computed with a fast
converging iterative algorithm. We illustrate our method with two well-known
models: the three-terminal system and the open Aharovov-Bohm interferometer
Scattering Phases and Density of States for Exterior Domain
For a bounded open domain with connected complement and
piecewise smooth boundary, we consider the Dirichlet Laplacian -\DO on
and the S-matrix on the complement . Using the restriction
of to the boundary of , we establish that
is trace class when is negative and
give bounds on the energy dependence of this difference. This allows for
precise bounds on the total scattering phase, the definition of a
-function, and a Krein spectral formula, which improve similar results
found in the literature.Comment: 15 pages, Postscript, A
A remote sensor for electromagnetic personal safety monitoring
Abstract: Citizens are often afraid of electromagnetic fields. This creates a need for logging and quantifying the exposure to fields in the civil environment. An electromagnetic field strength sensor (from 1MHz to 1GHz) has been developed which is connected to a logging system and a modem. The systems output level is independent of frequencies i.e. follows the standards limit curve. It can be powered by solar cells. So it can operate without human interaction anywhere. The system can emit a warning when the exposure level is exceeded. In normal mode, it transmits the logged levels once per week to a central data collection system. This paper describes the design and operation of the system
Diagnostics for spectropolarimetry and magnetography
An assessment on the capabilities of modern spectropolarimeters and
magnetographs is in order since most of our astrophysical results rely upon the
accuracy of the instrumentation and on the sensitivity of the observables to
variations of the sought physical parameters. A contribution to such an
assessment will be presented in this talk where emphasis will be made on the
use of the so-called response functions to gauge the probing capabilities of
spectral lines and on an analytical approach to estimate the uncertainties in
the results in terms of instrumental effects. The Imaging Magnetograph
eXperiment (IMaX) and the Polarimetric and Helioseismic Imager (PHI) will be
used as study cases.Comment: To be published in "Physics of Sun and Star Spots", Proceedings of
IAU Symp. 273, D.P. Choudhary & A.C. Cadavid (eds.), Cambridge, UK: Cambridge
University Pres
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