El carnaval rural en el río Magdalena

El carnaval, tradición de origen occidental que evoca antiguos ritos de propiciación a dioses griegos y romanos anteriores al cristianismo, llegó al nuevo mundo con los europeos. Su asentamiento, su significado social y simbólico y las transformaciones que ha experimentado en las diversas comunidades rurales y urbanas de América Latina se han convertido en temas de estudios sociopolíticos, antropológicos y estéticos

Rapid Source Parameter Estimations of Southern California Earthquakes Using PreSEIS

Earthquake early warning (EEW) systems provide real-time estimates of earthquake source and ground motion parameters to users before strong ground shaking occurs at sites of interest (Kanamori et al. 1997; Kanamori 2005). They make use of the fact that the most destructive ground shaking during an earthquake is caused by S- and surface waves, which travel much slower than P waves and also slower than electromagnetic signals carrying warnings to potential users. Real-time information systems can minimize loss of life and property damage and are therefore an important tool in short-term seismic hazard mitigation and disaster management (Wenzel et al. 2001). If an alarm can be issued seconds before the onset of the strong ground motions, automatic emergency actions can be initiated such as slowing down high speed trains or shutting down computers or gas distribution, for instance (Goltz 2002). EEW systems are of two main types, regional and on-site. The former uses a dense network of seismic stations to locate the earthquake, determine its magnitude, and estimate the ground motion at given sites of interest. The latter uses the observations at a single sensor to estimate the ensuing ground motion at the same site (Kanamori 2005). While regional systems work more accurately, they need more time to estimate earthquake source parameters

Towards a Framework for Predictive Maintenance Strategies in Mechanical Engineering – A Method-Oriented Literature Analysis

Industrial machines are amongst Germany’s main export products and contribute to the increasing revenue of Mechanical Engineering. However, in the course of globalization, services for such machines have become costly and inflexible due to long distances between vendors and customers. Consequently, companies seek to avoid unexpected failures and long down times by the development of data-based “smart” service solutions, including Predictive Maintenance (PM). In contrast to reactive or preventive measures, PM refers to the proactive planning of required maintenance services based on data sampled from the machinery. Although PM has been conceptualized decades ago and various methods have been proposed ever since, there is no standard strategy. By analyzing existing literature, we shed light on the knowledge base in PM. We provide an overview of methods and discuss their respective context, including preconditions and applications. Our work constitutes a first step towards a framework that guides the implementation of PM-strategies

Antropólogos y antropología en colombia: sus responsabilidades

'Este artículo discute la existencia de categorías de antropólogos en Colombia, cuya aproximación a la ciencia antropológica expresa éticas diferenciadas y distintos compromisos en lo que hace a su responsabilidad social frente a las sociedades que pertenecen y a las de los hombres objeto de su estudio.

El carnaval rural en el río Magdalena

El carnaval, tradición de origen occidental que evoca antiguos ritos de propiciación a dioses griegos y romanos anteriores al cristianismo, llegó al nuevo mundo con los europeos. Su asentamiento, su significado social y simbólico y las transformaciones que ha experimentado en las diversas comunidades rurales y urbanas de América Latina se han convertido en temas de estudios sociopolíticos, antropológicos y estéticos

El diablo de Riosucio no es el demonio católico

Cantares al Diablo. Aproximación histórica al carnaval de Riosucio. Héctor Jaime Montoya Hoyos y otros (Compiladores). Consejo de Gobierno Departamental y otros, Manizales, 1985, 131 págs

Esclavos rebeldes y cimarrones [Recurso electrónico]

Esclavitud y rebeldía en América / Javier Laviña. Yanga y el cimarronaje en la Nueva España / Guadalupe Castañón González. Palenques : refugios cimarrones de africanía en América / Nina S. de Friedemann. El pueblo garífuna, una nación libertaria / Francesca Gargall

Evaluation and optimization of seismic networks and algorithms for earthquake early warning – the case of Istanbul (Turkey)

Earthquake early warning (EEW) systems should provide reliable warnings as quickly as possible with a minimum number of false and missed alarms. Using the example of the megacity Istanbul and based on a set of simulated scenario earthquakes, we present a novel approach for evaluating and optimizing seismic networks for EEW, in particular in regions with a scarce number of instrumentally recorded earthquakes. We show that, while the current station locations of the existing Istanbul EEW system are well chosen, its performance can be enhanced by modifying the parameters governing the declaration of warnings. Furthermore, unless using ocean bottom seismometers or modifying the current EEW algorithm, additional stations might not lead to any significant performance increase

Target heterogeneity in oncology : the best predictor for differential response to radioligand therapy in neuroendocrine tumors and prostate cancer

Tumor or target heterogeneity (TH) implies presence of variable cellular populations having different genomic characteristics within the same tumor, or in different tumor sites of the same patient. The challenge is to identify this heterogeneity, as it has emerged as the most common cause of ‘treatment resistance’, to current therapeutic agents. We have focused our discussion on ‘Prostate Cancer’ and ‘Neuroendocrine Tumors’, and looked at the established methods for demonstrating heterogeneity, each with its advantages and drawbacks. Also, the available theranostic radiotracers targeting PSMA and somatostatin receptors combined with targeted systemic agents, have been described. Lu-177 labeled PSMA and DOTATATE are the ‘standard of care’ radionuclide therapeutic tracers for management of progressive treatment-resistant prostate cancer and NET. These approved therapies have shown reasonable benefit in treatment outcome, with improvement in quality of life parameters. Various biomarkers and predictors of response to radionuclide therapies targeting TH which are currently available and those which can be explored have been elaborated in details. Imaging-based features using artificial intelligence (AI) need to be developed to further predict the presence of TH. Also, novel theranostic tools binding to newer targets on surface of cancer cell should be explored to overcome the treatment resistance to current treatment regimens.http://www.mdpi.com/journal/cancerspm2021Nuclear Medicin