Comment on "Spin-1 aggregation model in one dimension"

M. Girardi and W. Figueiredo have proposed a simple model of aggregation in one dimension to mimic the self-assembly of amphiphiles in aqueous solution [Phys. Rev. E 62, 8344 (2000)]. We point out that interesting results can be obtained if a different set of interactions is considered, instead of their choice (the s=1 Ising model).Comment: Accepted for publication in Phys. Rev.

Functional mechanisms of stimulus-specific adaptation and deviance detection in the auditory pathway

Tesis por compendio de publicaciones[ES]En resumen, esta Tesis Doctoral demuestra que la SSA es un mecanismo presente en el cerebro del mamífero y que no se trata de un artefacto generado por la anestesia. Muestra además que la SSA es un mecanismo que puede explicarse perfectamente, a nivel subcortical, por el modelo de los canales de frecuencia. La existencia de controles de ganancia consecutivos ejercidos por el sistema GABAérgico sugiere también la presencia de varios niveles jerárquicos de procesamiento que ayudan a refinar y reducir la información redundante. En conjunto, la SSA parece ser un mecanismo que actúa como filtro preatentivo reduciendo las señales sensoriales irrelevantes, ayudando a los animales a presentar respuestas adecuadas para facilitar su supervivencia

Current marketing practices and market orientation in the context of an emerging economy: the case of Uruguay

This research explores the link between contemporary marketing practices, market orientation and business performance in Uruguay, an emergent country that has recovered from an economic crisis. These approaches seem to be related, but there is no existing evidence to confirm this impression. Lessons can be learned from understanding how effective is the adoption of marketing practices under a crisis scenario. Using data from interviews with 143 micro and small enterprises’ managers, we identify three clusters dependant on the combination of marketing practices: a multi-marketing cluster, a medium-level relationship marketing cluster and a transactional cluster. A model relating market orientation components and various performance measures is tested for the three clusters, showing that the multi-marketing and transactional clusters are more effective in translating efforts and resources into business outcomes.Contemporary marketing practices, Market orientation, Performance, Clusters, Structural equation modeling, Uruguay

Time is of the Essence: Machine Learning-based Intrusion Detection in Industrial Time Series Data

The Industrial Internet of Things drastically increases connectivity of devices in industrial applications. In addition to the benefits in efficiency, scalability and ease of use, this creates novel attack surfaces. Historically, industrial networks and protocols do not contain means of security, such as authentication and encryption, that are made necessary by this development. Thus, industrial IT-security is needed. In this work, emulated industrial network data is transformed into a time series and analysed with three different algorithms. The data contains labeled attacks, so the performance can be evaluated. Matrix Profiles perform well with almost no parameterisation needed. Seasonal Autoregressive Integrated Moving Average performs well in the presence of noise, requiring parameterisation effort. Long Short Term Memory-based neural networks perform mediocre while requiring a high training- and parameterisation effort.Comment: Extended version of a publication in the 2018 IEEE International Conference on Data Mining Workshops (ICDMW

Marketing practices and performance in a post-crisis scenario

This research explores the link between contemporary marketing practices, market orientation and business performance in Uruguay, an emergent country that has recovered from an economic crisis. These approaches seem to be related, but there is no existing evidence to confirm this impression. Lessons can be learned from understanding how effective is the adoption of marketing practices under a crisis scenario. Using data from interviews with 143 micro and small enterprises’ managers, we identify three clusters dependant on the combination of marketing practices: a multi-marketing cluster, a medium-level relationship marketing cluster and a transactional cluster. A model relating market orientation components and various performance measures is tested for the three clusters, showing that the multi-marketing and transactional clusters are more effective in translating efforts and resources into business outcomes

Competitiveness of Colombian Departments observed from an Economic geography Perspective

SummaryIn this paper, we analyze the regional competitiveness concept and its measurement using the old and New Trade Theory and the New Economic Geography. The analysis shows that the competitiveness has no sense when is applied to the goods market, while has sense (however, not in all situations) when is applied to the productive factors market. Contrary to most approaches and measurements of the competitiveness of Colombian departments, we show that is possible to obtain simple measures which, in addition to being consistent with the conceptual framework of economic geography, are the product of the combination of a small number of variablesRegional competitiveness, New Trade Theory, Economic Geography, Colombian departments, Competitiveness Ranking