8,781 research outputs found
Experimental assessment of a wireless communications platform for the built and natural heritage
Wireless sensor networks have become extremely popular in a number of fields in recent years, the cultural heritage among them. To date, however, communications quality has not been technically validated in any of the various built (churches, museums, archaeological sites) or natural (caves, lava tubes) heritage scenarios. The present study establishes methodology for assessing the quality of wireless communications and validating the network used, both of which are essential to guaranteeing accurate long-term monitoring in heritage scenarios. Parameters such as signal strength, link quality, range and success rate were analysed with a view to preventing transmission failure and ensuring reliable monitoring for the preventive conservation of the cultural heritage.The present study was funded under projects CGL2011-27902, GEOMATERIALES 2 (S2013/MIT-2914).Peer reviewe
On the body-mind nexus in chronic musculoskeletal pain: A scoping review
Background and objective: Bodily experience disturbances are frequent among chronic musculoskeletal pain patients and associated with important pain-related psychosocial outcomes (e.g., disability, quality of life). However, the relationship between bodily experience and the psychological dimensions of chronic pain (e.g., affective, cognitive) has only recently garnered attention. This scoping review aimed to identify trends and gaps in research on the nexus between body awareness, body image, and body schema, and psychological processes/outcomes in adults with chronic musculoskeletal pain to inform future directions for research and practice. Databases and data treatment: This study was guided by Arksey and O’Malley's guidelines and PRISMA-ScR recommendations. Keywords related to body awareness/body image/body schema and pain were searched on PsycInfo and PubMed from database inception until 16 February 2021; 2045 articles were screened, and 41 met the inclusion criteria (i.e., primary quantitative studies investigating body awareness/body image/body schema in relation to pain-related psychological outcomes/processes in chronic musculoskeletal pain). Results: The referred bodily experience constructs have been inconsistently defined. Body awareness was the most investigated construct, with consistent operationalization strategies. The links between body schema/body image and pain-related psychological processes/outcomes are still under-investigated. Most studies examined the role of bodily experience as a correlate/predictor of psychological outcomes/processes; overall, a better relationship with one's own body was associated with better pain-related psychological outcomes/processes. Conclusions: Our findings emphasize the relevance of further investigating body-mind relations in musculoskeletal pain and the development of therapies designed to improve the bodily experience within multidisciplinary treatment programmes. Suggestions for future research are discussed. Significance: This scoping review identifies trends/gaps in current research on the relationship between body awareness/body image/body schema and pain-related psychological processes/outcomes in adults with musculoskeletal pain. Overall, findings suggest that better bodily experiences are associated to lower fear-avoidance beliefs, better self-regulation strategies and better chronic pain adjustment, being important targets in pain management interventions. Nonetheless, the results also emphasize the need to further investigate the causal relationships and other outcomes related to psychological resilience, as well as to develop gold standard treatments focused on bodily experience.info:eu-repo/semantics/acceptedVersio
A Study of Two-Temperature Non-Equilibrium Ising Models: Critical Behavior and Universality
We study a class of 2D non-equilibrium Ising models based on competing
dynamics induced by contact with heat-baths at two different temperatures. We
make a comparative study of the non-equilibrium versions of Metropolis, heat
bath/Glauber and Swendsen-Wang dynamics and focus on their critical behavior in
order to understand their universality classes. We present strong evidence that
some of these dynamics have the same critical exponents and belong to the same
universality class as the equilibrium 2D Ising model. We show that the bond
version of the Swendsen-Wang update algorithm can be mapped into an equilibrium
model at an effective temperature.Comment: 12 pages of LaTeX plus 18 pages of postscript figures in a uuencoded
file (608k
Absence of a Finite-Temperature Melting Transition in the Classical Two-Dimensional One-Component Plasma
Vortices in thin-film superconductors are often modelled as a system of
particles interacting via a repulsive logarithmic potential. Arguments are
presented to show that the hypothetical (Abrikosov) crystalline state for such
particles is unstable at any finite temperature against proliferation of
screened disclinations. The correlation length of crystalline order is
predicted to grow as as the temperature is reduced to zero, in
excellent agreement with our simulations of this two-dimensional system.Comment: 3 figure
Molecular Dynamics Simulation of Solvent-Polymer Interdiffusion. I. Fickian diffusion
The interdiffusion of a solvent into a polymer melt has been studied using
large scale molecular dynamics and Monte Carlo simulation techniques. The
solvent concentration profile and weight gain by the polymer have been measured
as a function of time. The weight gain is found to scale as t^{1/2}, which is
expected for Fickian type of diffusion. The concentration profiles are fit very
well assuming Fick's second law with a constant diffusivity. The diffusivity
found from fitting Fick's second law is found to be independent of time and
equal to the self diffusion constant in the dilute solvent limit. We separately
calculated the diffusivity as a function of concentration using the Darken
equation and found that the diffusivity is essentially constant for the
concentration range relevant for interdiffusion.Comment: 17 pages and 7 figure
Osteocondritis de los sesamoideos del hallux: revisión de la literatura a propósito de un caso
La osteocondritis de los sesamoideos del hallux es una afección poco frecuente que puede afectar tanto al sesamoideo medial como al lateral. Presentamos un caso de osteocondritis del sesamoideo externo en una mujer de 27 años, con clínica de dolor de un año de evolución, que se resolvió satisfactoriamente con la excisión quirúrgica del mismo. Comparamos el tratamiento realizado con otros publicados, realizando una revisión de la literatura con respecto a sus causas, los métodos diagnósticos y los tratamientos empleados.Osteochondritis of the sesamoid bones is an unfrequent condition wich may affect both the medial and lateral hallux sesamoids. We report a case of osteochondritis of the external sesamoid in a 27 years old woman, with a one year clinical pain evolution, wich was satisfactory solved by carrying out its surgical excision. We compare the treatment carried out with others that have been published, reviewing the literature that refers to its causes, the diagnostic methods and treatment use
Non-Destructive Probing of Rabi Oscillations on the Cesium Clock Transition near the Standard Quantum Limit
We report on non-destructive observation of Rabi oscillations on the Cs clock
transition. The internal atomic state evolution of a dipole-trapped ensemble of
cold atoms is inferred from the phase shift of a probe laser beam as measured
using a Mach-Zehnder interferometer. We describe a single color as well as a
two-color probing scheme. Using the latter, measurements of the collective
pseudo-spin projection of atoms in a superposition of the clock states are
performed and the observed spin fluctuations are shown to be close to the
standard quantum limit.Comment: 4 pages, 4 figures, accepted for publication in Physical Review
Letter
- …