Miracle-dz/UniFAR-FTUs huggingface dataset:
SISTEMAS DE CONVERSIÓN DE ENERGÍA EÓLICA CONTROL Y DISEÑO

Este articulo aborda algunas de las soluciones actuales mas utilizadas de los sistemas de generacion eolica, enfatizando en los fundamentos del control y el diseno de aplicaciones individuales de potencia reducida. Lo previo, orientado a pequenos sistemas de potencia rurales o aislados, donde la conexion a la red publica es dificil o muy costosa. Se examinan los elementos en comun y diferencias de las diversas propuestas existentes, ventajas y desventajas, su potencial y lo que se puede esperar de sus tendencias en el mediano y largo plazo.
Learning deep similarity in fundus photography

Similarity learning is one of the most fundamental tasks in image analysis. The ability to extract similar images in the medical domain as part of content-based image retrieval (CBIR) systems has been researched for many years. The vast majority of methods used in CBIR systems are based on hand-crafted feature descriptors. The approximation of a similarity mapping for medical images is difficult due to the big variety of pixel-level structures of interest. In fundus photography (FP) analysis, a subtle difference in e.g. lesions and vessels shape and size can result in a different diagnosis. In this work, we demonstrated how to learn a similarity function for image patches derived directly from FP image data without the need of manually designed feature descriptors. We used a convolutional neural network (CNN) with a novel architecture adapted for similarity learning to accomplish this task. Furthermore, we explored and studied multiple CNN architectures. We show that our method can approximate the similarity between FP patches more efficiently and accurately than the state-of- the-art feature descriptors, including SIFT and SURF using a publicly available dataset. Finally, we observe that our approach, which is purely data-driven, learns that features such as vessels calibre and orientation are important discriminative factors, which resembles the way how humans reason about similarity. To the best of authors knowledge, this is the first attempt to approximate a visual similarity mapping in FP.
Evaluación de la actividad antioxidante y determinación del contenido de fenoles totales y flavonoides de hojas de diferentes genotipos de Ugni molinae Turcz

XIII I. INTRODUCCIÓN. 1 1.1 Estrés oxidativo y rol de los antioxidantes en la salud.2 II. HIPÓTESIS. 6 III. OBJETIVOS.6 3.1. Objetivos generales.6 3.2. Objetivos específicos. 6 IV. MATERIALES Y MÉTODOS. 7 4.1. Reactivos.7 4.2. Material vegetal.8 4.3 Estudio químico. 9 4.3.1. Preparación de los extractos etanólicos (EETs) seriados de hojas de U. molinae.9 4.3.2. Cromatografía en capa fina (CCF). 11
Building and using flexible models incorporating grey-level information

The authors describe a technique for building compact models of the shape and appearance of flexible objects seen in 2-D images. The models are derived from the statistics of sets of labeled images of example objects. Each model consists of a flexible shape template, describing how important points of the object can vary, and a statistical model of the expected grey levels in regions around each model point. Such models have proved useful in a wide variety of applications. A description is given on how the models can be used in local image search, and examples of their application are included. <<ETX>>
A high-accuracy, low-power consumption switched-capacitor interface of differential capacitance transducers

A high-accuracy and low-power consumption interface of differential capacitance transducer based on switched-capacitor (SC) sample/hold (S/H) circuit including a fully-differential subtractor is presented. This interface reduces the nonlinear error by means of double sampling and does not require component matching. Performances of the proposed interface are simulated by HSPICE using a 0. 35µm n-well CMOS process parameter. The results have demonstrated that the proposed interface offers increased linearity and lower power consumption.
New era started by 200mm wafers of MEMS large scale production

To meet predicted huge demands of MEMS (Micro Electrical Mechanical Systems), wafer size had to be changed from smaller diameter 100–150 mm to 200mm for mass production. To establish 200mm MEMS process, there were many technical challenges caused by differences between LSI and MEMS even though the equipments and processes were fairly similar except for some unique processes. This paper describes suggestions of the technical issues and resolutions found during development of our new 200mm MEMS mass production line focused on following three uniqueness. 1. The difficulties MEMS' unique thicker films process using common tools and equipments with LSI line. 2. MEMS' unique backside process and the cavity formation. 3. MEMS' unique sacrificial oxide etching process to release movable portion.
Gender as a divine attribute

Abstract It is standard within the Christian tradition to characterize God in predominantly masculine terms. Let ‘traditionalism’ refer to the view that this pattern of characterization is theologically mandatory. In this article, I seek to undercut the main motivations for traditionalism by showing that it is not more accurate to characterize God as masculine rather than feminine (or vice versa). The novelty of my argument lies in the fact that it presupposes neither theological anti-realism nor a robust doctrine of divine transcendence, but instead rests heavy theoretical weight on the imago Dei doctrine and the method of perfect-being theology. The article closes by examining the implications of the article's main argument for the moral and liturgical propriety of characterizing God in predominantly masculine terms.
Recent and Past Experiences with Beam-Beam Effects at HERA

Proton beam stability when in collision with high current electron bunches was of foremost concern during the design stages of the HERA collider[1]. In initial commissioning the beam-beam interaction proved to be a key factor in determining the lifetime of the proton beam. It was quickly ascertained[2] that the proton beam lifetime in collision could be substantially increased by both matching the electron and proton beam sizes ( ) at the interaction points (IPs) and by carefully centering the beams. Presently, proton beam life times of hundreds of hours are routinely observed. In the near future, the accelerators will be upgraded[3] to include new low- insertions and to allow for yet higher beam currents. Key factors affecting the stability of colliding proton beams will be described as well as recent experiments performed to explore at high electron beam currents new regimes of the proton beam-beam limit at HERA.
The bottom-up formation and maintenance of a Twitter community: Analysis of the #FreeJahar Twitter community

Purpose – The article explores the formation, maintenance and disintegration of a fringe Twitter community in order to understand if offline community structure applies to online communities Design/methodology/approach – The research adopted Big Data methodological approaches in tracking user-generated contents over a series of months and mapped online Twitter interactions as a multimodal, longitudinal ‘social information landscape’. Centrality measures were employed to gauge the importance of particular user nodes within the complete network and time-series analysis were used to track ego centralities in order to see if this particular online communities were maintained by specific egos. Findings – The case study shows that communities with distinct boundaries and memberships can form and exist within Twitter’s limited user content and sequential policies, which unlike other social media services, do not support formal groups, demonstrating the resilience of desperate online users when their ideology overcome social media limitations. Analysis in this article using social networks approaches also reveals that communities are formed and maintained from the bottom-up. Research limitations/implications – The research data is based on a particular dataset which occurred within a specific time and space. However, due to the rapid, polarising group behaviour, growth, disintegration and decline of the online community, the dataset presents a ‘laboratory’ case from which many other online community can be compared with. It is highly possible that the case can be generalised to a broader range of communities and from which online community theories can be proved/disproved. Practical implications – The article showed that particular group of egos with high activities, if removed, could entirely break the cohesiveness of the community. Conversely, strengthening such egos will reinforce the community strength. The questions mooted within the paper and the methodology outlined can potentially be applied in a variety of social science research areas. The contribution to the understanding of a complex social and political arena, as outlined in the paper, is a key example of such an application within an increasingly strategic research area - and this will surely be applied and developed further by the computer science and security community. Originality/value – The majority of researches that cover these domains have not focused on communities that are multimodal and longitudinal. This is mainly due to the challenges associated with the collection and analysis of continuous datasets that have high volume and velocity. Such datasets are therefore unexploited with regards to cyber-community research.
Asthma Patterns in Saudi Arabian Children

IN A STUDY of 2006 school children living in two urban areas of the Kingdom of Saudi Arabia, we used a questionnaire to collect details of age, sex, areas of residence, occupation, education, social class, parental history of asthma and information relating to parental smoking habit. The relative importance of these factors on the likelihood of children having bronchial asthma was assessed using a linear modelling analysis. The extent to which these factors affected the severity of bronchial asthma was also examined. A number of statistically significant associations between bronchial asthma and 'breathlessness' (P <0.0087), 'Father smoker' (P <0.0001), 'usually cough' (P <0.0001), 'pets' (P <0.0067) and 'Family history of allergy' (P <0.007), were found.
Design of Multilevel Hybrid Classifier with Variant Feature Sets for Intrusion Detection System

With the increase of network components connected to the Internet, the need to ensure secure connectivity is becoming increasingly vital. Intrusion Detection Systems (IDSs) are one of the common security components that identify security violations. This paper proposes a novel multilevel hybrid classifier that uses different feature sets on each classifier. It presents the Discernibility Function based Feature Selection method and two classifiers involving multilayer perceptron (MLP) and decision tree (C4.5). Experiments are conducted on the KDD’99 Cup and ISCX datasets, and the proposal demonstrates better performance than individual classifiers and other proposed hybrid classifiers. The proposed method provides significant improvement in the detection rates of attack classes and Cost Per Example (CPE) which was the primary evaluation method in the KDD’99 Cup competition. key words: intrusion detection, discernibility function, feature selection, neural networks
Detection of mobile genetic elements in pediocin PA‐1 like producing lactic acid bacteria

To evaluate the presence of mobile genetic elements (MGEs) in intergeneric and interspecific pediocin producing lactic acid bacteria (LAB) the flanking regions of the pediocin PA‐1/AcH (pediocin PA‐1) operon was characterized. In Enterococcus faecium Acr4 and Lactobacillus plantarum Acr2 a variation in the amplicon size in the downstream region of the operon was identified, suggesting a deletion in this region. Beyond that, in pediocin PA‐1 encoding plasmids MGEs such as ISLpl1 and mobilization regions were detected by Southern hybridization analysis. Phylogenetic analyses of the E. faecium Acr4 ISLpl1 gene sequence suggested the gene transfer from lactobacilli in the environment. The tyrosine recombinase detected in pediocin plasmids of Pediococcus acidilactici H and K7 indicate a possible transfer of the entire operon among LAB. Since these elements are known to be associated with transfer of genes linked to the bacteriocin production, antibiotic resistance, and sugar utilization, we suggest similar mechanism for natural spread of pediocin PA‐1 operon among different bacterial species.
The Conquest of Israeli Inflation and Current Policy Dilemmas

During the five decades since the creation of the Bank of Israel in 1954 Israel experienced high and extremely variable inflation. Price stability (as defined by current international norms) was finally achieved at the beginning of the twenty first century. The paper divides the 1954-2015 sample into six sub-periods characterized by different inflation environments. The first part of the paper documents the impact of those different inflation environments on the average speed of individual price adjustments, the related pass-through from the exchange rate to domestic prices, inflation uncertainty, the extent of dollarization, relative price variability and the cost and time to maturity of the public debt. There are major quantitative differences in the above mentioned variables between the five inflationary sub-periods and the more recent price stability period. Among those are dramatic changes in the anchoring of inflation expectations, in the pass-through coefficient, inflation uncertainty, the speed of price adjustments, relative price variability, the (rather late) disappearance of dollarization in the real estate market and the benefits induced by price stability for the financing of the public debt. The paper provides an explanation for the fact that high inflation was stabilized in “one shot” while the subsequent moderate inflation was stabilized gradually within an inflation targeting framework. It argues that the second stabilization fits into the mold of the opportunistic approach to disinflation. The second part of the paper focuses solely on the period of price stability. It documents major, non-inflation related, structural changes since the turn of the century and discusses current policy dilemmas. Among the major structural changes are a persistent switch from current account deficits to surpluses, increased flexibility in the labor market, a reduction in the size of government, separation of pension and provident funds from the banking system and the emergence of a corporate bond market. Particularly remarkable is the macroeconomic resilience of the Israeli economy to the world financial crisis. As in many developed economies both the inflation gap and the output gap are recently in the negative range implying that, on both counts, monetary policy should be expansionary. The current policy rate is indeed almost at the zero bound. On one hand this policy, along with occasional interventions in the forex market, partially offsets overvaluation pressures on the exchange rate. On the other it reinforces a nine year long cycle of price increases in the real estate market.
Théorèmes limites pour les sommes de Birkhoff de fonctions d'intégrale nulle en théorie ergodique en mesure infinie

Ce travail est consacre a certaines classes de systemes dynamiques ergodiques, munis d'une mesure invariante infinie, telles que des applications de l'intervalle avec un point fixe neutre ou des marches aleatoires. Le comportement asymptotique des sommes de Birkhoff d'observables d'integrale non nulle est assez bien connu, pour peu que le systeme ait une certaine forme d'hyperbolicite. Une situation particulierement interessante est celle des tours au-dessus d'une application Gibbs-Markov. Nous cherchons dans ce contexte a etudier le cas d'observables d'integrale nulle. Nous obtenons ainsi une forme de theoreme central limite pour des systemes dynamiques munis d'une mesure infinie. Apres avoir introduit l'ensemble des notions necessaires, nous adaptons des resultats de E. Csaki et A. Foldes sur les marches aleatoires au cas des applications Gibbs-Markov. Les theoremes d'independance asymptotique qui en decoulent forment le cœur de cette these, et permettent de demontrer un theoreme central limite generalise. Quelques variations sur l'enonce de ce theoreme sont obtenues. Ensuite, nous abordons les processus en temps continu, tels que des semi-flots et des flots. Un premier travail consiste a etudier les propriete en temps grand du temps de premier retour et du temps local pour des extensions de systemes dynamiques, ce qui se fait par des methodes spectrales. Enfin, par reductions successives, nous pouvons obtenir une version du theoreme central limite pour des flots periodiques, et en particulier le flot geodesique sur le fibre tangent unitaire de certaines varietes periodiques hyperboliques.
Fluid Injection Optimization Using Modified Global Dynamic Harmony Search

One of the mostly used enhanced oil recovery methods is the injection of water or gas under pressure to maintain or reverse the declining pressure in a reservoir. Several parameters should be optimized in a fluid injection process. The usual optimizing methods evaluate several scenarios to find the best solution. Since it is required to run the reservoir simulator hundreds of times, the process is very time consuming and cumbersome. In this study a new intelligent method of optimization, called “global dynamic harmony search” is used with some modifications in combination with a commercial reservoir simulator (ECLIPSE ® ) to determine the optimum solution for fluid injection problem unknowns. Net present value (NPV) is used as objective function to be maximized. First a simple homogeneous reservoir model is used for validating the developed method and then the new optimization method is applied to a real model of one of the Iran oil reservoirs. Three strategies, including gas injection, water injection, and well placement are considered. Comparing the values of NPV and field oil efficiency (FOE) of gas injection and water injection strategies, it is concluded that water injection strategy surpasses its rival. Considering water injection to be the base case, a well placement optimization is also done and best locations for water injection wells are proposed. The results show the satisfying performance of the algorithm regarding its low iterations.
Functions as processes

This paper exhibits accurate encodings of the λ-calculus in the π-calculus. The former is canonical for calculation with functions, while the latter is a recent step (Milner et al. 1989) towards a canonical treatment of concurrent processes. With quite simple encodings, two λ-calculus reduction strategies are simulated very closely; each reduction in λ-calculus is mimicked by a short sequence of reductions in π-calculus. Abramsky's precongruence of applicative bisimulation (Abramsky 1989) over λ-calculus is compared with that induced by the encoding of the lazy λ-calculus into π-calculus; a similar comparison is made for call-by-value λ-calculus.
Effect of Computer Screen Back and Font Color on Chinese Reading Comprehension

The present study, by moving window paradigm, investigated the effects of three background colors (black, white, and blue) matched with font colors (five font colors in each background color level) on Chinese text reading. The results indicated that the reading efficiency was better when background-font color matched in the following pairs: white-black, white-blue, blue-yellow and blue-white. And the reading efficiency was lower when black back-color matched with white, red, green, purple, and white matched with red. Finally, the implications of these results on human computer interface design were discussed.
An SLA negotiation strategy for scheduling in grid

In this paper, we have proposed an efficient job scheduling strategy using multi-agent systems and service level agreements (SLAs), in which user and resource provider agent bargain with each other based on Alternating Offers Protocol. Software agents communicate and autonomously make negotiation decisions on behalf of their human users. SLAs are used to establish agreements for ensuring the user's QoS requirements are met, and the provider utilizes its own resources efficiently. We aim to investigate the computational intensive applications. To this end, we have considered a concurrent bilateral negotiation where multiple users and providers are able to participate in process to achieve their goals. The effectiveness of this approach is evaluated by simulations on GridSim toolkit and Grid workload traces.
Molecular identification of two threatened pigeon species (Columbidae) using faecal samples

Faecal DNA isolation identifies two Columba species P. M rrero et al. Short communic Molecular identification of two threatened pigeon species (Columbidae) using faecal samples PATRICIA MARRERO, 1 * VICENTE M. CABRERA, 2 DAVID P. PADILLA 1 & MANUEL NOGALES 1 1 Island Ecology and Evolution Research Group, IPNA-CSIC, La Laguna E-38206, Tenerife, Canary Islands, Spain 2 Department of Genetics, University of La Laguna, La Laguna E-38271, Tenerife, Canary Islands, Spain
Free energy calculation methods: A theoretical and empirical comparison of numerical errors and a new method qualitative estimates of free energy changes

We present a comparison of four free energy calculation methods: thermodynamic integration (TI); traditional free energy perturbation (FEP); Bennett's acceptance ratio method (IPS); and a method that is related to an implementation of the WHAM method (CRS). The theoretical bases of the methods are first described, then calculations of the solvation free energies of methane and ethane are performed to determine the magnitude of the errors for the different methods. We find that the methods give similar errors when many intermediate states (windows) are used, but the IPS and CRS methods give smaller errors than the TI and FEP methods when no intermediate states are used. We also present a new procedure (based on the CRS method) that uses coordinates from simulations of a set of solutes to calculate the salvation free energies of additional solutes for which no simulations were performed. Solvation free energies for nine solutes (methanol, dimethylether, methylamine, methylammonium, dimethylamine, fluoromethane, difluoromethane, trifluoromethane, and tetrafluoromethane) are estimated based only on simulations of set of small hydrophobic solutes (including methane, ethane, and propane). These estimates can be surprisingly accurate and appear to be useful for making rapid estimates of solvation free energies. © 1997 by John Wiley & Sons, Inc. J Comput Chem 18: 902–919, 1997
A new surface-wave EMAT design of enhanced transduction efficiency

One of the main drawbacks of EMATs is their inefficiency in generating ultrasounds. To solve this problem, a new surface-wave EMAT design, whose magnet width is less than the coil, is proposed. The principle of the new EMAT is studied based on finite element simulation, which indicates that the EMAT is more efficient by taking advantage of both horizontal and vertical magnetic fields of the magnet. Experiment verified that the amplitude of the ultrasonic signal generated by the EMAT has been enhanced by about 53.7%. The potentials and limitations of the new design have also been discussed.