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Machines and machinations: The integrated care record service in the UK national health service
This paper examines the use of Actor Network Theory (ANT) as a lens to get a better understanding of the implementation of the Integrated Care Record Service (ICRS) in the UK National Health Service (NHS). Actor Network Theory has been deployed in various environments to achieve a better understanding of the roles of not only the humans but also the artifacts that constitute, in this case, healthcare networks of services and organisations. The theory is used as a means of supporting real world interventions, providing a richer understanding of complexities involved and thereby helps management to make better decisions. This study also explores Latour’s concept of machines as machinations, whose role is to translate other actors into the network. We propose ICRS as a fruitful empirical context for the use of ANT to support decision making for actors in health care provision. Actor Network Theory (ANT) is well-suited for use in the socio-technical evaluation of IS into the ICRS project because this approach treats human and non-human actors symmetrically. This approach facilitates a more thorough examination of the ways in which information technology is enabled or restricted in social processes
Contributions to workload of rotational optical transformations
An investigation of visuomotor adaptation to optical rotation and optical inversion was conducted. Experiment 1 examined the visuomotor adaptability of subjects to an optically rotating visual world with a univariate repeated measures design. Experiment 1A tested one major prediction of a model of adaptation put forth by Welch who predicted that the aversive drive state that triggers adaptation would be habituated to fairly rapidly. Experiment 2 was conducted to investigate the role of motor activity in adaptation to optical rotation. Specifically, this experiment contrasted the reafference hypothesis and the proprioceptive change hypothesis. Experiment 3 examined the role of cognition, error-corrective feedback, and proprioceptive and/or reafferent feedback in visuomotor adaptation to optical inversion. Implications for research and implications for practice were suggested for all experiments
Physical mechanism for a kinetic energy driven zero-bias anomaly in the Anderson-Hubbard model
The combined effects of strong disorder, strong correlations and hopping in
the Anderson-Hubbard model have been shown to produce a zero bias anomaly which
has an energy scale proportional to the hopping and minimal dependence on
interaction strength, disorder strength and doping. Disorder-induced
suppression of the density of states for a purely local interaction is
inconsistent with both the Efros-Shklovskii Coulomb gap and the
Altshuler-Aronov anomaly, and moreover the energy scale of this anomaly is
inconsistent with the standard energy scales of both weak and strong coupling
pictures. We demonstrate that a density of states anomaly with similar features
arises in an ensemble of two-site systems, and we argue that the energy scale t
emerges in strongly correlated systems with disorder due to the mixing of lower
and upper Hubbard orbitals on neighboring sites.Comment: 4 pages, 3 figures; new version includes minor changes to figures and
text to increase clarit
Temperature dependence of the zero-bias anomaly in the Anderson-Hubbard model: Insights from an ensemble of two-site systems
Motivated by experiments on doped transition metal oxides, this paper
considers the interplay of interactions, disorder, kinetic energy and
temperature in a simple system. An ensemble of two-site Anderson-Hubbard model
systems has already been shown to display a zero-bias anomaly which shares
features with that found in the two-dimensional Anderson-Hubbard model. Here
the temperature dependence of the density of states of this ensemble is
examined. In the atomic limit, there is no zero-bias anomaly at zero
temperature, but one develops at small nonzero temperatures. With hopping,
small temperatures augment the zero-temperature kinetic-energy-driven zero-bias
anomaly, while at larger temperatures the anomaly is filled in.Comment: 8 pages, 3 figures; submitted to SCES 2010 conference proceeding
The effects of reinforcement interval on the acquisition of paired-associate responses
Effects of reinforcement interval on acquisition of paired-associate response
SHARP: Automated monitoring of spacecraft health and status
Briefly discussed here are the spacecraft and ground systems monitoring process at the Jet Propulsion Laboratory (JPL). Some of the difficulties associated with the existing technology used in mission operations are highlighted. A new automated system based on artificial intelligence technology is described which seeks to overcome many of these limitations. The system, called the Spacecraft Health Automated Reasoning Prototype (SHARP), is designed to automate health and status analysis for multi-mission spacecraft and ground data systems operations. The system has proved to be effective for detecting and analyzing potential spacecraft and ground systems problems by performing real-time analysis of spacecraft and ground data systems engineering telemetry. Telecommunications link analysis of the Voyager 2 spacecraft was the initial focus for evaluation of the system in real-time operations during the Voyager spacecraft encounter with Neptune in August 1989
Evaluation of registration, compression and classification algorithms. Volume 1: Results
The registration, compression, and classification algorithms were selected on the basis that such a group would include most of the different and commonly used approaches. The results of the investigation indicate clearcut, cost effective choices for registering, compressing, and classifying multispectral imagery
Evaluation of registration, compression, and classification algorithms. Volume 2: Documentation
There are no author-identified significant results in this report
Electrometry using the quantum Hall effect in a bilayer 2D electron system
We discuss the development of a sensitive electrometer that utilizes a
two-dimensional electron gas (2DEG) in the quantum Hall regime. As a
demonstration, we measure the evolution of the Landau levels in a second,
nearby 2DEG as the applied perpendicular magnetic field is changed, and extract
an effective mass for electrons in GaAs that agrees within experimental error
with previous measurements.Comment: 3.5 pages, 3 figures, submitted to APL
Origin of the hysteresis in bilayer 2D systems in the quantum Hall regime
The hysteresis observed in the magnetoresistance of bilayer 2D systems in the
quantum Hall regime is generally attributed to the long time constant for
charge transfer between the 2D systems due to the very low conductivity of the
quantum Hall bulk states. We report electrometry measurements of a bilayer 2D
system that demonstrate that the hysteresis is instead due to non-equilibrium
induced current. This finding is consistent with magnetometry and electrometry
measurements of single 2D systems, and has important ramifications for
understanding hysteresis in bilayer 2D systems.Comment: 4 pages, 3 figs. Accepted for publication in PR
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