Ressenyes

Obra ressenyada: Carlos VICÉN ANTOLÍN, Diccionario de expresiones y términos jurídicos latinos. 2ª ed. Barcelona, 2002

Multiple threshold tracking methods for improved observation of nociceptive function

Estimating momentary perception thresholds cannot reveal dynamic properties of underlying mechanisms. However, continuously estimating multiple thresholds can. This talk focussed on the possibility of tracking multiple thresholds over time. A cold pressor model was used to activate descending nociceptive pathways, and a capsaicin defunctionalization model was used to induce nociceptive peripheral changes

A Traceability Service to Facilitate RFID Adoption in the Retail Supply Chain

ISBN: 978-989-8111-94-4International audienceNowadays, companies are suffering changes in the way they deal with their inventories and their whole supply chain management. New technologies are emerging to help them adapt to the changes and keep a competitive status, but the adoption of such technologies is not always easy. Even though a lot of research has been done for RFID, there are still some areas that are being left aside, like the traceability aspect, which is one of the most important concerns in the retail supply chain. We propose a service named TRASER (TRAceability SErvice for the Retail supply chain) that will help the companies adopt the new technologies into their existing environments, dealing with persistence and traceability, and allowing the users to manage their operation according to their business rules, workflows and historical data

Numerical Bifurcation Analysis of Double +1 Multiplier in Z3-Symmetric Maps

We consider a resonance 1:1 bifurcation with Z3-symmetry in a discrete-time dynamical system. We employ standard normalization and center manifold reduction techniques. With this, we obtain the normal form up to cubic order and also explicit formulas for the critical normal form coefficients. We provide an implementation of our algorithm that can be used in the numerical bifurcation toolbox matcontm. We illustrate our analysis with a Cournot triopoly model from economics

Identification of the nociceptive forward pathway using amplitude-response pairs

Malfunctioning of the nociceptive forward pathway plays a key role in the development of chronic pain, which reduces the quality of lives of the patients. To quantitatively characterize the nociceptive forward pathway, four neurophysiological parameters can be estimated by integrating computational models and multiple perception thresholds. This model-based approach could reveal the state of the nociceptive malfunctioning for understanding the development of pain, e.g. central sensitization. With suitable psychophysical procedures, one can obtain amplitude-response pairs around a perception threshold. Combining these techniques, one can first perform logistic regression to obtain a threshold from amplitude-response pairs and use that for parameter estimation. In this work, we directly estimate parameters using the amplitude-response pairs without intermediate transformations. We study how the number of trials included influences the estimation and compare with the earlier approach. Furthermore, considering the clinical aspect, whether the pairs using fewer combinations of the temporal settings can still enough to estimate the parameters will be addressed. This work will only consider the simulated dataset to estimate the parameters, which is an essential step to further investigations with real datasets. The estimate of the system parameters using amplitude-response pairs directly converges faster than the estimate based on the perception threshold. Such improvement of estimation could provide more reliable information for further interpretations of the state of the nociceptive system

Simulation of psychophysical stimulus selection procedures for dynamic threshold tracking

Stimulus selection procedures are of importance for adequate psychophysical nociceptive threshold estimation. Various stimulus selection procedures were analyzed by means of simulations. Precision, bias, efficiency, and time constants of the various stimulus selection procedures were determined in a simulation model wherein a threshold is tracked. A new adaptive stimulus selection procedure based on stochastic stimulus selection is proposed as a nociceptive threshold tracking procedure