6,986 research outputs found
DISASTER SALSA
ABSTRACT
DISASTER SALSA
By
Linda A. H. Sirois
Disaster Salsa is an interrelated collage of essays, poems, letters, recipes, and stories that are juxtaposed to tell a narrative of what it is like to be the mother of a child who struggles with mental disorder. Our oldest son has had Obsessive Compulsive Disorder (OCD) all his life; at the age of 11 he was struck with a baseball bat, which resulted in a Traumatic Brain Injury (TBI).
Services that address, diagnose, and treat mental disorders have been abysmal for many years in parts of our country, and ten years ago in northern Michigan, “TBI” was not an injury that was commonly considered or discussed by medical practitioners. As a result, it was seven years before our son was correctly diagnosed with a brain injury. During those seven years, one of my coping mechanisms was researching information about various forms of mental disorder, in order to try to identify a true diagnosis. This reliance on research and definition is symbolized by my use of definitions as an organizing structure to contain and narrate emotional chapters of our family life during the time our son’s illness was acute and uncategorized, as well as the aftermath for him.
This collection presents a series of glimpses into the messiness and pain of daily life for those who suffer from mental disorder, their resilience, and the occasional dark humor of those who, through love, are forced to witness
Precis of neuroconstructivism: how the brain constructs cognition
Neuroconstructivism: How the Brain Constructs Cognition proposes a unifying framework for the study of cognitive development that brings together (1) constructivism (which views development as the progressive elaboration of increasingly complex structures), (2) cognitive neuroscience (which aims to understand the neural mechanisms underlying behavior), and (3) computational modeling (which proposes formal and explicit specifications of information processing). The guiding principle of our approach is context dependence, within and (in contrast to Marr [1982]) between levels of organization. We propose that three mechanisms guide the emergence of representations: competition, cooperation, and chronotopy; which themselves allow for two central processes: proactivity and progressive specialization. We suggest that the main outcome of development is partial representations, distributed across distinct functional circuits. This framework is derived by examining development at the level of single neurons, brain systems, and whole organisms. We use the terms encellment, embrainment, and embodiment to describe the higher-level contextual influences that act at each of these levels of organization. To illustrate these mechanisms in operation we provide case studies in early visual perception, infant habituation, phonological development, and object representations in infancy. Three further case studies are concerned with interactions between levels of explanation: social development, atypical development and within that, developmental dyslexia. We conclude that cognitive development arises from a dynamic, contextual change in embodied neural structures leading to partial representations across multiple brain regions and timescales, in response to proactively specified physical and social environment
Studying development in the 21(st) century
In this response, we consider four main issues arising from the commentaries to the target article. These include further details of the theory of interactive specialization, the relationship between neuroconstructivism and selectionism, the implications of neuroconstructivism for the notion of representation, and the role of genetics in theories of development. We conclude by stressing the importance of multidisciplinary approaches in the future study of cognitive development and by identifying the directions in which neuroconstructivism can expand in the Twenty-first Century
Shielding efficiency and E(J) characteristics measured on large melt cast Bi-2212 hollow cylinders in axial magnetic fields
We show that tubes of melt cast Bi-2212 used as current leads for LTS magnets
can also act as efficient magnetic shields. The magnetic screening properties
under an axial DC magnetic field are characterized at several temperatures
below the liquid nitrogen temperature (77 K). Two main shielding properties are
studied and compared with those of Bi-2223, a material that has been considered
in the past for bulk magnetic shields. The first property is related to the
maximum magnetic flux density that can be screened, Blim; it is defined as the
applied magnetic flux density below which the field attenuation measured at the
centre of the shield exceeds 1000. For a cylinder of Bi-2212 with a wall
thickness of 5 mm and a large ratio of length over radius, Blim is evaluated to
1 T at T = 10 K. This value largely exceeds the Blim value measured at the same
temperature on similar tubes of Bi-2223. The second shielding property that is
characterized is the dependence of Blim with respect to variations of the sweep
rate of the applied field, dBapp/dt. This dependence is interpreted in terms of
the power law E = Ec(J/Jc)^n and allows us to determine the exponent n of this
E(J) characteristics for Bi-2212. The characterization of the magnetic field
relaxation involves very small values of the electric field. This gives us the
opportunity to experimentally determine the E(J) law in an unexplored region of
small electric fields. Combining these results with transport and AC shielding
measurements, we construct a piecewise E(J) law that spans over 8 orders of
magnitude of the electric field.Comment: 16 pages, 7 figure
Circuit QED scheme for realization of the Lipkin-Meshkov-Glick model
We propose a scheme in which the Lipkin-Meshkov-Glick model is realized
within a circuit QED system. An array of N superconducting qubits interacts
with a driven cavity mode. In the dispersive regime, the cavity mode is
adiabatically eliminated generating an effective model for the qubits alone.
The characteristic long-range order of the Lipkin-Meshkov-Glick model is here
mediated by the cavity field. For a closed qubit system, the inherent second
order phase transition of the qubits is reflected in the intensity of the
output cavity field. In the broken symmetry phase, the many-body ground state
is highly entangled. Relaxation of the qubits is analyzed within a mean-field
treatment. The second order phase transition is lost, while new bistable
regimes occur.Comment: 5 pages, 2 figure
The Relationship between Time Perspective and Self-Monitoring of Blood Glucose among people with Type 1 Diabetes
Background. Self-monitoring of blood glucose helps people with type 1 diabetes to maintain glycaemic control and reduce the risk of complications. However, adherence to blood glucose monitoring is often suboptimal. Purpose. Like many health behaviours, self-monitoring of blood glucose involves exerting effort in the present in order to achieve future benefits. As such, the present research explored whether individual differences in time perspective – specifically, the extent to which people have a balanced time perspective – are associated with the frequency with which people with type 1 diabetes monitor their blood glucose and, thus, maintain glycaemic control. Methods. Adults with type 1 diabetes completed measures of time perspective, feelings associated with monitoring, attitudes toward monitoring, and trait self-control. Objective data regarding the frequency with which participants monitored their blood glucose levels and their long-term glycaemic control was extracted from their medical records. Results. Hierarchical regression analyses and tests of indirect effects (N = 129) indicated that having a more balanced time perspective was associated with more frequent monitoring of blood glucose, and as a result, better glycaemic control. Further analyses (N =158) also indicated that there was an indirect relationship between balanced time perspective and monitoring of blood glucose via the feelings that participants associated with monitoring and their subsequent attitudes toward monitoring. Conclusions. These findings point to the importance and relevance of time perspective for understanding health-related behaviour and may help to inform interventions designed to promote self-monitoring of blood glucose in people with type 1 diabetes
Motivations for consulting complementary and alternative medicine practitioners: A comparison of consumers from 1997–8 and 2005
Background: Use of complementary and alternative medicine (CAM), and especially CAM
practitioners, has continued to rise in recent years. Although several motivators of CAM use have
been identified, little is known about how and if the motivations for using CAM have changed over
time. The purpose of the current study was to compare the reasons for consulting CAM
practitioners in consumers in 1997–8 and eight years later in 2005.
Methods: Surveys were displayed in CAM and conventional medicine offices and clinics in Ontario,
Canada in 1997–8 and again in 2005, and self-selected participants returned the surveys by mail.
Results: In 1997–8, 141 CAM consumers were identified from the 199 surveys returned, and 185
CAM consumers were identified from the 239 surveys returned in 2005. Five of the six CAM
motivations were more likely to be endorsed by the 2005 CAM consumers compared to the 1997–
8 CAM consumers (all p's < .0001). In 1997–8 the two top reasons for using CAM were that CAM
allowed them to take an active role in their health (51.8%), and because conventional medicine was
ineffective for their health problem (41.8%). In 2005, the treatment of the whole person (78.3%)
was the top reason for using CAM followed by taking an active role in one's health (76.5%). The
2005 consumers were less educated, had slightly more chronic health complaints, had been using
CAM for longer, and were more likely to consult chiropractors, reflexologists, and therapeutic
touch practitioners than the 1997–8 consumers. Otherwise, the socio-demographic and health
profiles of the two groups of CAM consumers were similar, as was their use of CAM.
Conclusion: Compared to consumers in 1997–8, consumers in 2005 were more likely to endorse
five of the six motivations for consulting CAM practitioners. A shift towards motivations focusing
more on the positive aspects of CAM and less on the negative aspects of conventional medicine
was also noted for the 2005 consumers. Findings suggest that CAM motivations may shift over time
as public knowledge of and experience with CAM also changes
Tripartite interactions between two phase qubits and a resonant cavity
The creation and manipulation of multipartite entangled states is important
for advancements in quantum computation and communication, and for testing our
fundamental understanding of quantum mechanics and precision measurements.
Multipartite entanglement has been achieved by use of various forms of quantum
bits (qubits), such as trapped ions, photons, and atoms passing through
microwave cavities. Quantum systems based on superconducting circuits have been
used to control pair-wise interactions of qubits, either directly, through a
quantum bus, or via controllable coupling. Here, we describe the first
demonstration of coherent interactions of three directly coupled
superconducting quantum systems, two phase qubits and a resonant cavity. We
introduce a simple Bloch-sphere-like representation to help one visualize the
unitary evolution of this tripartite system as it shares a single microwave
photon. With careful control and timing of the initial conditions, this leads
to a protocol for creating a rich variety of entangled states. Experimentally,
we provide evidence for the deterministic evolution from a simple product
state, through a tripartite W-state, into a bipartite Bell-state. These
experiments are another step towards deterministically generating multipartite
entanglement in superconducting systems with more than two qubits
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