Miracle-dz/UniFAR-FTUs huggingface dataset:
A Soft Computing Approach for Learning to Aggregate Rankings

This paper presents an approach to combine rank aggregation techniques using a soft computing technique -- Genetic Programming -- in order to improve the results in Information Retrieval tasks. Previous work shows that by combining rank aggregation techniques in an agglomerative way, it is possible to get better results than with individual methods. However, these works either combine only a small set of lists or are performed in a completely ad-hoc way. Therefore, given a set of ranked lists and a set of rank aggregation techniques, we propose to use a supervised genetic programming approach to search combinations of them that maximize effectiveness in large search spaces. Experimental results conducted using four datasets with different properties show that our proposed approach reaches top performance in most datasets. Moreover, this cross-dataset performance is not matched by any other baseline among the many we experiment with, some being the state-of-the-art in learning-to-rank and in the supervised rank aggregation tasks. We also show that our proposed framework is very efficient, flexible, and scalable.
Curing Efficacy of Light Emitting Diodes of Dental Curing Units

Background and aims The aim of the present study was to compare the efficacy of quartz tungsten halogen (QTH) and light emitting diode (LED) curing lights on polymerization of resin composite. Materials and methods A hybrid resin composite was used to prepare samples which were cured using two QTH and ten LED light curing sources. Twelve groups, each containing ten samples, were prepared using each light source. The cured depth of the resin was determined using ISO 4049 method and Vickers hardness values were determined at 1.0 mm intervals. Data was analyzed by ANOVA and Tukey test. Results Data analysis demonstrated a significant difference between light sources for depth of cure. At 1.0 mm below the surface all the tested light sources and at 2.0-mm intervals all light sources except two (Optilux 501 and LEDemetron I) and at 3.0-mm intervals only two light sources (PenCure and LEDemetron II) could produce hardness values higher than 80% of superficial layer values. Conclusion This study showed that a variety of LED light sources used in the present study are as effective as the high-intensity QTH lights in polymerization of resin composite.
Detecting version number attacks in RPL-based networks using a distributed monitoring architecture

The concept of Internet of Things involves the deployment of Low power and Lossy Networks (LLN) allowing communications among pervasive devices such as embedded sensors. The IETF designed the Routing Protocol for Low power and Lossy Networks (RPL) for supporting these constrained networks. Keeping in mind the different requirements of such networks, the protocol supports multiple routing topologies, called DODAGs, built using different objective functions, so as to optimize routing based on several metrics. A DODAG versioning system is incorporated into RPL in order to ensure an optimized topology. However, an attacker can exploit this mechanism to damage the network and reduce its lifetime. In this paper we propose a detection strategy based on a distributed monitoring architecture with dedicated algorithms that is able to identify malicious nodes performing such attacks in RPL-based environments. The performance of this solution is evaluated through extensive experiments and its scalability is quantified considering a monitoring node placement method.
Television, family atmosphere and perception of values in teenagers with and without ADHD

s [ES] La cultura multimedia en la que vivimos ofrece pocas oportunidades para entrenar la atencion y puede dificultar la construccion del sentido de los mensajes transmitidos, por lo que, en esta investigacion el objetivo general fue determinar las semejanzas y diferencias entre adolescentes con TDAH y estandar en el perfil de consumo televisivo en relacion con el clima familiar y los valores percibidos. La muestra total es de 209 adolescentes con TDAH y estandar con edades comprendidas entre los 14 y 18 anos. Se utilizaron los cuestionarios CH-TV 0.2 y VAL.TV. 02. Los resultados indican que, en general, los adolescentes se concentran en dos perfiles televisivos mayoritarios diferenciados por el grado de eleccion de generos televisivos y la relevancia otorgada al atractivo fisico del personaje relacionado con los valores de apertura al cambio y autopromocion, junto a la cohesion y expresividad familiar. Sin embargo, existen diferencias destacables entre el grupo con TDAH y estandar respecto a dichos perfiles. Estos datos tienen su interes por contribuir al estudio de las diferencias individuales en relacion con el consumo mediatico, y por sentar las bases para la elaboracion de programas de competencia mediatica que se ajusten a las caracteristicas de los colectivos a los que van dirigidos. [EN] The current media culture offers few opportunities for people to maintain their attention over prolonged periods of time and may complicate the understanding of the meaning of the transmitted messages. Thus, this research aims to establish the similarities and differences between teenagers with and without Attention Deficit Hyperactivity Disorder (ADHD) in terms of television preferences in relation to the family atmosphere and the perception of values. The study is based on the opinions of 209 teenagers with and without ADHD and aged between 14 and 18 years. The results, which are based on answers to the CH-TV 0.2 and VAL.TV. 02 questionnaires, indicate that there are two majority TV-viewer profiles among the sample of teenagers. These profiles are differentiated by the preference towards certain TV genres, the importance granted to the physical attractiveness of TV characters, which is related to the values of openness to change and selfenhancement, and family cohesion and expressiveness. However, there are remarkable differences between the ADHD and normal groups with regards to those profiles. This study aims to contribute to the study of individual differences in relation to media consumption, and to the development of educational media literacy programmes for children and teenagers, according to the characteristics of their target audience.
AN EFFICIENT NUMERICAL METHOD FOR CAVITATION IN NONLINEAR ELASTICITY

This paper is concerned with the numerical computation of cavitation in nonlinear elasticity. The Crouzeix–Raviart nonconforming finite element method is shown to prevent the degeneration of the mesh provoked by the conventional finite element approximation of this problem. Upon the addition of a suitable stabilizing term to the elastic energy, the method is used to solve cavitation problems in both radially symmetric and non-radially symmetric settings. While the radially symmetric examples serve to illustrate the efficiency of the method, and for validation purposes, the experiments with non-centered and multiple cavities (carried out for the first time) yield novel observations of situations potentially leading to void coalescence.
Fall Detection from Human Shape and Motion History Using Video Surveillance

Nowadays, Western countries have to face the growing population of seniors. New technologies can help people stay at home by providing a secure environment and improving their quality of life. The use of computer vision systems offers a new promising solution to analyze people behavior and detect some unusual events. In this paper, we propose a new method to detect falls, which are one of the greatest risk for seniors living alone. Our approach is based on a combination of motion history and human shape variation. Our algorithm provides promising results on video sequences of daily activities and simulated falls.
Ambient living activity recognition based on feature-set ranking using intelligent systems

E-health and e-monitoring have become an increasingly important area during recent years, being the recognition of motion, postures and physical exercises one of the main topics. In this kind of problem is common to work with a huge training data set in a multidimensional space, so feature selection is absolutely necessary. Most works are based on knowledge extraction using features which permit to make decisions about the activity realized, being feature selection the most critical stage. Conventional feature selection procedures based on wrapper methods or ‘branch and bound’ are highly computationally expensive. In this work, we propose an alternative filter method using a feature-set ranking via a couple of two statistical criteria, which achieves remarkable accuracy rates in the classification process. We demonstrate the usefulness of our method on both laboratory and seminaturalistic activity ambient living datasets for real problems.
On Complexity of Lyapunov Functions for Switched Linear Systems

Abstract We show that for any positive integer d , there are families of switched linear systems—in fixed dimension and defined by two matrices only—that are stable under arbitrary switching but do not admit (i) a polynomial Lyapunov function of degree ≤ d , or (ii) a polytopic Lyapunov function with ≤ d facets, or (iii) a piecewise quadratic Lyapunov function with ≤ d pieces. This implies that there cannot be an upper bound on the size of the linear and semidefinite programs that search for such stability certificates. Several constructive and non-constructive arguments are presented which connect our problem to known (and rather classical) results in the literature regarding the finiteness conjecture, undecidability, and non-algebraicity of the joint spectral radius. In particular, we show that existence of a sum of squares Lyapunov function implies the finiteness property of the optimal product.
Sleeping sickness in Uganda: a thin line between two fatal diseases

Abstract Objective To determine, through the use of molecular diagnostic tools, whether the two species of parasite that cause human African trypanosomiasis have become sympatric. Design Blood sampling of all available patients between June 2001 and June 2005 in central Uganda and between July and September 2003 in northwest Uganda and analysis of subcounty sleeping sickness records in Uganda between 1985 and 2005. Setting Sleeping sickness treatment centres in central and northwest Uganda and in south Sudan. Participants Patients presenting at the treatment centres and diagnosed as having sleeping sickness. Main outcome measure Classification of parasites from patients from each disease focus as either Trypanosoma brucei rhodesiense (acute form) or T b gambiense (chronic form). Results Blood from 231 patients with sleeping sickness in central Uganda and from 91 patients with sleeping sickness in northwest Uganda and south Sudan were screened for T b rhodesiense (detection of SRA gene) and T b gambiense (detection of TgsGP gene). All samples from central Uganda were classified as T b rhodesiense, and all samples from northwest Uganda and south Sudan were identified as T b gambiense. Conclusions The two focuses of human African trypanosomiasis remain discrete, but the area of Uganda affected by the acute form of human sleeping sickness has increased 2.5-fold since 1985, spreading to three new districts within the past five years through movement of infected livestock. Without preventive action targeted at the livestock reservoir of this zoonotic disease, it is likely that the two disease focuses will converge. This will have a major impact on diagnosis and treatment of this neglected disease. Real time monitoring is recommended, using molecular diagnostic tools (at a regional surveillance centre, for example) targeted at both livestock and human patients.
Gendering Resistance to Right-Wing Populism: Black Protest and a New Wave of Feminist Activism in Poland?

The rise to power of the populist Law and Justice Party (PiS) in 2015, and its growing authoritarianism, has politicized thousands of Poles and brought large-scale protests back to Polish streets. Women have been at the forefront of these struggles, aligning the previously unpopular quest for reproductive rights and bodily autonomy with the larger resistance to the ruling party. In particular, the proposal to restrict the abortion law sparked mass mobilization in 2016, with Black Protests turning into a formative experience for many of the previously nonactive participants. This article sheds light on this most recent wave of feminist activism in Poland and its forms of action, from a generational perspective. It scrutinizes in detail the narrative of a “new generation of activists,” who claim to change the contours of Polish feminism, making it more inclusive, more creative and bolder. It reports on the shift, unfolding slowly since the 2000s, from the institutionalized feminism of nongovernmental organizations to less formal, grassroots forms of engagement that combine online activism with organizing on the ground. However, while the latter is often assumed to be skeptical toward the European Union’s “gender equality” framework, the article reveals how, within the context of growing authoritarianism, the youngest cohorts in particular return to the liberal strand of feminism, characterized by the language of human rights and an uncritical gaze toward the European Union. The article ends with a reflection on the proclaimed ‘newness’ of feminism in Poland, as articulated by the new generation of activists. The absence of intergenerational dialogue and transmission of knowledge, it is argued, render past feminist struggles in Poland invisible and forgotten and strikingly leaves unquestioned the legacy of previous neoliberal and patriarchal governments that led to the erosion of women’s rights in postsocialist Poland.
Please Scroll down for Article European Journal of Developmental Psychology Family of Origin, Age at Menarche, and Reproductive Strategies: a Test of Four Evolutionary-developmental Models

This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.
Engagement of academics in education-driven university-business cooperation: a motivation-based perspective

ABSTRACT The importance of university-business cooperation (UBC) continues to grow. To date, however, our understanding of UBC in education is lacking, as is our knowledge of the motivations of academics. This research explores a comprehensive mix of motivations underlying education-driven UBC in the form of student mobility, curriculum design and delivery, and lifelong learning. Specifically, drawing on self-determination theory, motivations across five orientations are examined, namely monetary, career, research, educational and social. Based on an extensive and wide-reaching European survey, this research demonstrates the context-specific nature of academic motivations for UBC in education. Not only do the motivations differ from those commonly noted in relation to commercialisation, the set of motivations varies across different education-driven activities. This research offers important contributions to theory and practice, revealing that academics are motivated more strongly by intrinsic than extrinsic reasons, with only social and educational orientations emerging as significant motivations across all four activities.
BRST approach to Hamiltonian systems

BRST formulation of cohomological Hamiltonian mechanics is presented. In the path integral approach, we use the BRST gauge fixing procedure for the partition function with trivial underlying Lagrangian to fix symplectic diffeomorphism invariance. Resulting Lagrangian is BRST and anti-BRST exact and the Liouvillian of classical mechanics is reproduced in the ghost-free sector. The theory can be thought of as a topological phase of Hamiltonian mechanics and is considered as one-dimensional cohomological field theory with the target space a symplectic manifold. Twisted (anti-)BRST symmetry is related to global N=2 supersymmetry, which is identified with an exterior algebra. Landau-Ginzburg formulation of the associated $d=1$, N=2 model is presented and Slavnov identity is analyzed. We study deformations and perturbations of the theory. Physical states of the theory and correlation functions of the BRST invariant observables are studied. This approach provides a powerful tool to investigate the properties of Hamiltonian systems.
Chromosome Inversions, Genomic Differentiation and Speciation in the African Malaria Mosquito Anopheles gambiae

The African malaria vector, Anopheles gambiae, is characterized by multiple polymorphic chromosomal inversions and has become widely studied as a system for exploring models of speciation. Near complete reproductive isolation between different inversion types, known as chromosomal forms, has led to the suggestion that A. gambiae is in early stages of speciation, with divergence evolving in the face of considerable gene flow. We compared the standard chromosomal arrangement (Savanna form) with genomes homozygous for j, b, c, and u inversions (Bamako form) in order to identify regions of genomic divergence with respect to inversion polymorphism. We found levels of divergence between the two sub-taxa within some of these inversions (2Rj and 2Rb), but at a level lower than expected and confined near the inversion breakpoints, consistent with a gene flux model. Unexpectedly, we found that the majority of diverged regions were located on the X chromosome, which contained half of all significantly diverged regions, with much of this divergence located within exons. This is surprising given that the Bamako and Savanna chromosomal forms are both within the S molecular form that is defined by a locus near centromere of X chromosome. Two X-linked genes (a heat shock protein and P450 encoding genes) involved in reproductive isolation between the M and S molecular forms of A. gambiae were also significantly diverged between the two chromosomal forms. These results suggest that genes mediating reproductive isolation are likely located on the X chromosome, as is thought to be the case for the M and S molecular forms. We conclude that genes located on the sex chromosome may be the major force driving speciation between these chromosomal forms of A. gambiae.
The Development of STEM Mobile Learning Package Ekosistem

This study aims to: develop and test the validity, legibility and effectiveness of STEM Mobile Learning Package ecosystems on students’ science and technology literacy using R & D research design. STEM Mobile Learning Package was validated by media experts and material experts. The level of legibility is measured by questionnaire through the results of a small-scale trial of a Biology student class. The effectiveness of the application was measured in wide-scale test for biology and natural science students. Data were analyzed using descriptive quantitative.The results showed the the validity on learning package from experts showed valid in 83,6%. Some revisions are needed especially on video aspect which will be better filled with not only text but also voice. Base on data collected from 47 students who have completely filled 12 statements in questionnaire, about 78,7% students stated they could understand the questions very well. Most of students (97,8%) agreed that the use of STEM enhanced their science literacy. Percentage of students that agreed on 12 statements ranged from 74,5% to 100%. Thus those result indicated a high level of legibility Although learning packages can be studied independently, certain topics still requiredto be directly discussed. This learning package is effective on student scientific literacy ranging from 64.6 to 98.6. While the highest achievement of student technology literacy is 92 with an average of 70.32. This study concludes that STEM Mobile Learning Package Ecosystem has good validity and legibility, as well as effective on students’ science and technology literacy.
Multi-wavelength imaging observations of plasma depletions over Kavalur, India

Abstract. Observations of ionospheric plasma depletions were made over Kavalur (12.56° N, 78.8° E, Mag. Lat 4.6° N), India during March–pril 1998 using an all sky optical imaging system operating at 630 nm, 777.4 nm and 557.7 nm. Out of 14 nights of observations, plasma depletions were seen only on 9 nights. Except for 21 March 1998, which was a magnetically disturbed period, all other nights belonged to a magnetically quiet period. Some of the important results obtained from these observations are: (a) After the onset of the equatorial spread F (ESF), plasma depletions take typically about 2 hrs 40 min to come to a fully developed state, (b) There are three distinct types of plasma depletions: type 1 have an east-west (e–w) extent of 250–350 km with an inter-depletion distance (IDD) of 125–300 km; Type 2 have an e–w extent of 100–150 km and IDD of 50–150 km; Type 3 have smallest the e–w extent (40–100 km) and IDD of 20–60 km, (c) Most of the observed plasma depletions (> 82%) had their eastward velocity in the range of 25–125 ms–1. Almost stationary plasma depletions (0–25 ms–1) were observed on one night, which was magnetically disturbed. These very slow moving depletions appear to be the result of a modification of the F-region dynamo field due to direct penetration of the electric field and/or changes in the neutral winds induced by the magnetic disturbance, (d) On the night of 21/22 March 1998, which was a magnetically disturbed period, plasma depletions could be seen simultaneously in all three observing wavelengths, i.e. in 630 nm, 777.4 nm and 557.7 nm. It is believed that this simultaneous occurrence was due to neutral density modifications as a result of enhanced magnetic activity. (e) Well developed brightness patterns were observed for the first time in 777.4 nm images. Earlier, such brightness patterns were observed only in 630 nm and 557.7 nm images. These brightness patterns initially appear as very small regions in the northern part of the image and then in about 90 min time, they attain their peak brightness and encompass the entire field-of-view in about 2 hrs 30 min. In some cases, brightness patterns contain one or two well developed plasma depletions within them. (f) The brightness patterns reported here differ from the earlier observations in that they do not show any differential behaviour in the direction of movement before and after the midnight, and that they are present for extended periods of time as large as 6 hrs. Key words. Atmospheric composition and structure (air-glow and aurora); Ionosphere (equatorial ionosphere; ionospheric irregularities)