In the past 50 years nurse scheduling has received considerable attention in the research community. There are two cases regarding the nurse scheduling problem : the static and dynamic. Dynamic NSP, is often called nurse rerostering problem, which presents reconstruction or modification of the predetermined roster for the current scheduling horizon. The aim of this paper is to present new hybrid strategy for nurse NRRP problem. The proposed methodology is based on efficient cooperation between fuzzy logic, ordered weighted averaging and (...) variable neighbourhood descent search. Complete system is tested, and experimental results are based on real-world dataset obtained from the Oncology Institute of Vojvodina in Serbia. (shrink)

As it is well known, mobile phones have become a basic gadget for any individual that usually stores sensitive information. This mainly motivates the increase in the number of attacks aimed at jeopardizing smartphones, being an extreme concern above all on Android OS, which is the most popular platform in the market. Consequently, a strong effort has been devoted for mitigating mentioned incidents in recent years, even though few researchers have addressed the application of visualization techniques for the analysis of (...) malware. Within this field, the present work proposes the extension of a new technique called Hybrid Unsupervised Exploratory Plots to visualize Android malware datasets. More precisely, the novel Beta-Hebbian Learning (BHL) method is applied for the first time and validated under the frame of Hybrid Unsupervised Exploratory Plots, in conjunction with clustering methods. The informative visualization achieved provides a picture of the structure of the malware families, allowing subsequent analysis of their organization. To validate the Hybrid Unsupervised Exploratory Plot extension and its tuning, the popular Android Malware Genome dataset has been used in the experimental setting. Promising results have been obtained, suggesting that BHL applied in combination with clustering techniques in Hybrid Unsupervised Exploratory Plots are a viable resource for the visualization of malware families. (shrink)

Detecting intrusions in large networks is a highly demanding task. In order to reduce the computation demand of analysing every single packet travelling along one of such networks, some years ago flows were proposed as a way of summarizing traffic information. Very few research works have addressed intrusion detection in flows from a visualizations perspective. In order to bridge this gap, the present paper proposes the application of a novel projection method (Beta Hebbian Learning) under this framework. With the aim (...) to validate this method, 8 traffic segments, containing many flows, have been analysed by means of this projection method. The promising results obtained for these segments, extracted from the University of Twente dataset, validate the proposed application. (shrink)

Nowadays, batteries play an important role in a lot of different applications like energy storage, electro-mobility, consumer electronic and so on. All the battery types have a common factor that is their complexity, independently of its nature. Usually, the batteries have an electrochemical nature. Several different test are accomplished to check the batteries performance, and commonly, it is predictable how they work depending of their technology. The present research describes the hybrid intelligent system created to accomplish fault detection over a (...) Lithium Iron Phosphate—LiFePO4 power cell type, commonly used in electro-mobility applications. The approach is based on the cell temperatures behaviour for voltage and current specific values. Taken into account the operating range of a real system based on a LiFePO4 cell, a large set of points of operation have been used to achieve the dataset. The different behaviour zones have been obtained by clustering as a first step. Then, different regression techniques have been used over each cluster. Polynomial regression, artificial neural networks and support vector regression were the combined techniques to develop the hybrid intelligent model proposed. The intelligent system gives very good results over the operating range, detecting all the faults tested during the validation. (shrink)

Student performance and its evaluation remain a serious challenge for education systems. Frequently, the recording and processing of students’ scores in a specific curriculum have several flaws for various reasons. In this context, the absence of data from some of the student scores undermines the efficiency of any future analysis carried out in order to reach conclusions. When this is the case, missing data imputation algorithms are needed. These algorithms are capable of substituting, with a high level of accuracy, the (...) missing data for predicted values. This research presents the hybridization of an algorithm previously proposed by the authors called adaptive assignation algorithm, with a well-known technique called multivariate imputation by chained equations. The results show how the suggested methodology outperforms both algorithms. (shrink)

Ozone is one of the pollutants with most negative effects on human health and in general on the biosphere. Many data-acquisition networks collect data about ozone values in both urban and background areas. Usually, these data are incomplete or corrupt and the imputation of the missing values is a priority in order to obtain complete datasets, solving the uncertainty and vagueness of existing problems to manage complexity. In the present paper, multiple-regression techniques and Artificial Neural Network models are applied to (...) approximate the absent ozone values from five explanatory variables containing air-quality information. To compare the different imputation methods, real-life data from six data-acquisition stations from the region of Castilla y León are gathered in different ways and then analyzed. The results obtained in the estimation of the missing values by applying these techniques and models are compared, analyzing the possible causes of the given response. (shrink)

This study presents the application of self-organizing maps to air-quality data in order to analyze episodes of high pollution in Madrid. The goal of this work is to explore the dataset and then compare several scenarios with similar atmospheric conditions : some of them when no actions were taken and some when traffic restrictions were imposed. The levels of main pollutants, recorded at these stations for eleven days at four different times from 2015 to 2018, are analyzed in order to (...) determine the effectiveness of the anti-pollution measures. The visualization of trajectories on the self-organizing map let us clearly see the evolution of pollution levels and consequently evaluate the effectiveness of the taken measures, after and during the protocol activation time. (shrink)

Providing the first English translation of Análisis del ser del mexicano, this book features a full biography of Uranga, a detailed overview of the translated text, and discussion of Uranga's relevance to contemporary debates in the phenomenology of culture, the philosophy of liberation, Latin American philosophy and phenomenology itself. Reading Uranga's brilliant words expertly translated and introduced by Carlos Alberto Sánchez finally allows us to understand why this Mexican philosopher is considered one of the most fearless and original thinkers of (...) the 20th century. (shrink)

In order to present the incidence of the dynamic turn in the logic of scientific research, we begin with a section, in this article, that deals with logical games as triggers of this dynamic turn in contemporary logic, together with the program of logical dynamics of information and interaction. We briefly introduce the main characteristics of the logic favorable to independence and the game-theoretical semantics, of dialogical logic, as well as the essential elements of this program. Although from any of (...) these points of view we have a list of logical tools to deal with more clearly epistemological issues, we highlight the role of dynamic epistemic logic, to which we dedicate the following section. There follows another one in which we enter the logical studies of abduction as one of the fundamental problems of contemporary epistemology and, in a new section, in terms of the theoretical constructs of the preceding sections, we present and explain a phenomenon that emerged in the field of linguistics, the case of the discovery of the Amazonian language pirahã, which should be considered an anomaly within the framework of the Chomskian theory. (shrink)

In order to present the incidence of the dynamic turn in the logic of scientific research, we begin with a section, in this article, that deals with logical games as triggers of this dynamic turn in contemporary logic, together with the program of logical dynamics of information and interaction. We briefly introduce the main characteristics of the logic favorable to independence and the game-theoretical semantics, of dialogical logic, as well as the essential elements of this program. Although from any of (...) these points of view we have a list of logical tools to deal with more clearly epistemological issues, we highlight the role of dynamic epistemic logic, to which we dedicate the following section. There follows another one in which we enter the logical studies of abduction as one of the fundamental problems of contemporary epistemology and, in a new section, in terms of the theoretical constructs of the preceding sections, we present and explain a phenomenon that emerged in the field of linguistics, the case of the discovery of the Amazonian language pirahã, which should be considered an anomaly within the framework of the Chomskian theory. (shrink)

La noción de emergencia acompaña a la Filosofía de la Biología desde finales del siglo XIX, afirmando que las propiedades de los sistemas biológicos no pueden deducirse de las de sus componentes. A lo largo del siglo XX las caracterizaciones de este concepto se han apoyado en cuatro pilares, impredecibilidad, novedad, restricción y causación descendente, pilares ligados a la asunción de una jerarquización de la realidad en niveles de organización. En este trabajo intento demostrar que puede explicarse la naturaleza de (...) las propiedades biológicas sin hacer referencia a la emergencia utilizando como herramienta la noción de cuasi-descomponibilidad propuesta originariamente por Herbert Simon. (shrink)

En este trabajo analizamos críticamente el enfoque mecanicista de explicación científica centrándonos principalmente en la forma en la que este da cuenta de los fenómenos biológicos. Nos proponemos complementar esta perspectiva con una concepción de nivel como intervalo de cuasi-descomponibilidad que nos permite fundamentar metafísicamente las propuestas mecanicistas clásicas en las propiedades sistémicas características de las entidades biológicas. A través del análisis de ejemplos concretos, demostraremos cómo nuestra propuesta permite superar algunas de las limitaciones de los enfoques predominantes de explicación (...) mecanística. (shrink)

_Resumen_: Analizamos el papel asignado a los dispositivos espaciales en las utopías adoptando una perspectiva teórica amplia: cultural, social e histórica. Primero documentamos la tendencia de las utopías a plasmarse en proyectos espaciales y esbozamos posibles causas de este hecho: la impronta griega, la preeminencia de la forma socio-política “ciudad” y el influjo del _ars memoriae_ basado en tipos arquitectónicos. Después interpretamos la evolución histórica de la cuestión, reconociendo un punto de inflexión en el siglo XIX con el determinismo espacialista (...) e identificando dos planteamientos que denominamos terapéutica del espacio y poética del espacio. Uno ambiciona solucionar los problemas más urgentes de las ciudades industriales mediante la organización espacial. El segundo dispone los diseños espaciales para instaurar un modelo utópico de sociedad, que gracias a la extensión de la ciencia y a la idea de progreso, se consideraba realizable, siendo uno de sus modelos más emblemáticos el Familisterio de Guisa. (shrink)

Includes articles about Origen, Thomas Aquinas, Hegel, Schleiermacher, Blondel, Teilhard de Chardin, Barth, Heidegger, Gadamer, postmodernism.

La cuestión planteada por Henri Bergson es ¿por qué la profundidad de la percepción y la continuidad del tiempo que experimentamos en nosotros es confinada y delimitada por signos, símbolos o ideas que utilizamos para representar el mundo que percibimos? Su hipótesis es que la filosofía y la ciencia han debilitado a través de su historia el poder de la corriente vital representada por el tiempo y la memoria. El objetivo de Henri Bergson es defender la necesidad de volver a (...) una metafísica que una en la misma durée el tiempo eterno y el fluir del tiempo vital y corporal. Su metodología consiste en revisar la historia de la idea de tiempo y la concepción de los filósofos sobre ella, así como su resistencia a descubrir la duración por debajo de esta idea de tiempo. Palabras clave: Tiempo, idea, memoria, percepción, materia, cuerpo. (shrink)

Hailed by the Journal of the History of Astronomy as "charming and witty," this chronicle by a renowned physicist traces the development of scientific thought from the works of the "founding fathers" — Galileo, Huygens, and Newton — to the more recent discoveries of Maxwell, Boltzmann, and Gibbs. 1984 edition.

The topic of the present reflection is Christian religious belief. Specifically, we will use Husserlian tools in order to examine the positional nature of this particular type of belief. We will be less interested in the question concerning the success conditions of this experience and more in its noetic structure. According to our proposal, to believe by faith supposes (although it is not exhausted by) accepting the existence of mundane evidence speaking against this fundamental belief. The believer acknowledges the existence (...) of this contradicting en-doxical basis and nevertheless believes what she believes. We will refer to this simultaneous movement of accepting and cancelling as the concessive structure of the religious attitude. The para-doxical movement of experiencing conflicting evidence as being subjectively ineffective is a key component of this attitude. At least some inchoative conflict with the world is required in order for the religious belief to be religious. Lastly, we will try to show that, with a distinctive terminology, the idea that the Christian religious attitude involves a conflict between subjectivity and world is present not only in Kierkegaard but also in phenomenological figures like Scheler and even Husserl. (shrink)

The parallel distributed processing (PDP) perspective brings forward the important point that all semantic phenomena are based on analog underlying mechanisms, involving the weighted summation of multiple inputs by individual neurons. It falls short of indicating, however, how the essentially discrete nature of semantic processing may emerge at the cognitive level. Bridging this gap probably requires attractor networks.