Miracle-dz/UniFAR-FTUs huggingface dataset:
Building a test bed for simulation analysis for the internet of things

A Internet das Coisas (IoT) permite a mistura entre o mundo fisico e informacional. Objetos fisicos serao capazes de ver, ouvir, pensar juntos, compartilhar informacoes e coordenar decisoes, sem interferencia humana em uma variedade de dominios. Para permitir essa visao de IoT em larga escala, espera-se que o equipamento seja de baixo custo, movel, eficiente em termos de energia, com restricoes computacionais e possibilite a comunicacao sem fio. Este projeto faz uma extensa visao geral do estado da arte em tecnologias de comunicacao para IoT, teoria de simulacao e ferramentas. Tambem descreve o banco de testes para simulacao de IoT e sua implementacao. A simulacao foi construida com o Simulador Castalia (ou seja, rede WSN) e o framework INET (ou seja, rede IP), ambos estendem os recursos do OMNeT ++. Existem duas redes independentes que se comunicam atraves de arquivos e trocam informacoes sobre origem, destino, carga util e tempo de simulacao. Analisando os resultados e possivel garantir que o protocolo de roteamento que e fornecido no Simulador Castalia nao oferece qualquer vantagem em termos de quebra de pacotes, recepcao de pacotes ou consumo de energia.
Incidental Pancreatic Cysts

Pancreatic cysts are being found with greater frequency because of the growing use of highly sensitive imaging techniques. However, the prevalence of pancreatic cysts in the general population is unclear. To address this issue, researchers in Europe reviewed data from 2803 consecutive patients (mean age, 51.1; 65% men) who underwent abdominal magnetic resonance imaging as part …
User modelling for older adults' mobile interaction behaviour : evaluation of user characteristics, task demands and interface design

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Utility of Antinuclear Antibody Screening by Various Methods in a Clinical Laboratory Patient Cohort.

BACKGROUND Antinuclear antibody (ANA)5 testing is routinely performed during evaluation of patients with a suspected connective tissue disease (CTD), yet the question of which method is most appropriate remains controversial. The purpose of this study was to evaluate the clinical utility of ANA testing by an enzyme immunoassay (EIA), an immunofluorescence assay (IFA), and a multiplex immunoassay (MIA) in a routine laboratory population. METHODS Samples (n = 1000) were collected from specimens submitted for ANA testing by EIA (Bio-Rad). All samples were subsequently analyzed by IFA (Zeus) and MIA (Bio-Rad). The sample cohort was weighted to represent the routine testing population. Diagnostic information was obtained by chart review. RESULTS For the diagnosis of a CTD, ROC curve analysis demonstrated no significant differences between IFA (area under the curve 0.81) and EIA (0.84) (P = 0.25), with overlay of a single point for the MIA. When normalized to a specificity of approximately 90%, the sensitivities of the MIA, EIA, and IFA were 67%, 67%, and 56%, respectively. By varying the clinical cutoff, the IFA could achieve the highest sensitivity of 94%; however, the corresponding specificity was only 43%. In contrast, a strongly positive EIA had a specificity of 97%, although, at this cutoff, the sensitivity was only 40%. CONCLUSIONS Although the overall diagnostic performance of the IFA, EIA, and MIA were not statistically different, the clinical sensitivity and specificity varied dramatically based on the positive/negative cutoff. Knowledge about the performance characteristics of each method will significantly aid in the interpretation of ANA testing.
PREVENÇÃO DE PNEUMONIA ASSOCIADA À VENTILAÇÃO MECÂNICA: UM ESTUDO OBSERVACIONAL

Os objetivos desse estudo foram identificar a incidencia de pneumonia, associada a ventilacao mecânica, em uma UTI Adulto e avaliar se as medidas para prevencao do referido evento adverso sao realizadas. Metodologia: Trata-se de um estudo observacional sistematico, nao participante, de aspecto prospectivo, associado a pesquisa documental, de natureza quantitativa. Resultados e Discussao: A densidade de incidencia dessa pneumonia foi de 84,74/1000 ventiladores-dia. Dos 20 participantes da pesquisa, 50,0% a adquiriram (n=10), a taxa de mortalidade foi de 60,0% (n=12) e dos pacientes que foram a obito, 66,6% (n=8) tiveram pneumonia associada a ventilacao mecânica. Na maioria dos casos (62,3%), a cabeceira da cama encontrava-se em altura inadequada, nenhum paciente foi monitorizado quanto a pressao correta do cuff do tubo orotraqueal e nenhum paciente foi submetido a aspiracao subglotica. Os cuidados de higiene oral com clorexidine, o uso de protetores gastricos e a interrupcao diaria da sedacao foram adequadamente realizados. Consideracoes finais: Constatou-se a necessidade de implantacao de protocolos eficazes de elevacao adequada da cabeceira, bem como a aquisicao de cuffometro e do sistema de aspiracao subglotica, como equipamentos indispensaveis para prevencao de pneumonia associada a ventilacao mecânica, assegurando-se dessa forma a melhor qualidade da assistencia, tao almejada pelas instituicoes de saude.
On the importance of interface interactions in core-shell nanocomposites of intrinsically conducting polymers

In this mini-review, we address the importance of specific interactions in core-shell structures composed with intrinsically conducting polymers (ICPs) as a shell and various nanoparticles used as a core. These interactions that can appear during the polymerization process of corresponding monomers or in the course of subsequent treatments of already formed core-shell nanocomposites play a crucial role in determining their structure and unique physical properties. They also lead to significant differences in molecular weight, structure, oxidation state, electronic properties, thermal stability and other properties of synthesized ICP shells in comparison to their pure state when polymerization proceeds without a template. This work was reported on the joint Ukrainian-Japan workshop in the V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine on 23rd December 2018. photoelectrical properties of molecular crystals at low temperatures; electronic (excitonic) processes in low-dimensional organic systems (aggregates, polymers); spectroscopic studies of molecular materials (donor-acceptor systems, organic pyroelectrics, molecular crystals); time-resolved photoluminescence spectroscopy of nanostructured and low-dimensional organic and inorganic materials.
Wave-conversion active liner based on generalized Snell-Descartes law

The Cremer’s impedance theoretical framework has been used for years to optimally design acoustic liners for the aeronautic industry, such as honeycomb liners. This passive mean of sound absorption, which consists in rather thin (a few centimeters) honeycomb-shaped cavities glued between a perforated sheet and a rigid back-wall, has several downsides: an optimal acoustic absorption can only be achieved over a limited bandwidth, centered around one (eventually two) prescribed central frequency. Their performance at low frequencies is also limited by their size, owing to the "quarter-wavelength rule". In this paper, we propose a fully tunable active liner based on electrodynamic resonators, employing loudspeaker membranes as sound absorbers, and an active control framework allowing modifying their acoustic impedance over a wide frequency band. An optimization of these active absorbers is achieved by considering the theoretical framework of the generalized Snell-Descartes law, which accounts for impedance gratings over an interface. Through this formalism, it is possible to devise a wave conversion strategy within an active acoustic liner in order to absorb multimodal sound propagation inside a rigid duct, improving the noise attenuation performance of the liner over an extended bandwidth.
Genetic diversity among Ethiopian sorghum [Sorghum bicolor (L.) Moench] gene bank accessions as revealed by SSR markers

The presence of genetic variation in plant populations is useful for conservation and use in breeding programs. This study was conducted to estimate the extent and patterns of genetic diversity among 200 sorghum accessions collected from different parts of Ethiopia and preserved in a gene bank. Using 39 polymorphic simple sequence repeat (SSR) markers, which were previously mapped, 261 alleles were produced with mean 6.7 alleles per SSR. Polymorphism Information Content (PIC) and Dice’s similarity coefficient values ranged from 0.06 to 0.81 and from 0.062 to 0.96, respectively. Hierarchical clustering using UPGMA analysis revealed three major clusters with no clear distinction among geographical origins. Moreover, analysis of molecular variance (AMOVA) indicated that the majority of the variation (99.62%) observed was attributed to differences among accessions and only a small fraction of the total variation (0.38%) was related to regions of original collection, which may indicate that geographical origin is not a useful guide to follow for germplasm collection. Rather, agro-ecological classifications may be better for collection mission. Furthermore, crossing of accessions from the three distant clusters could result in promising genotypes for use as varieties or parents for the future breeding programs. Key words: Allele, cluster, genetic variability, polymorphism information content, sorghum, SSR.
Effect of interparticle action on shear thickening behavior of cementitious composites: modeling and experimental validation

Shear thickening is a behavior of a material that displays an increase in viscosity with increasing shear rate. Research has indicated that in self-consolidating concrete (SCC), shear thickening is primarily caused by the formation of “particle clusters” due to collisions of particles in the low yield stress of the fluid material matrix of SCC at a high flow rate. Based on this theory, a previously developed particle–fluid model was modified and applied to predict the relationship between the shear stress and shear strain rate of cementitious composites that exhibit shear thickening behavior. The rheology test results indicated no apparent shear thickening behavior was observed for SCC paste mixtures while distinct shear thickening behavior was observed when the introduced fine aggregate volume fraction increased up to 40%. The modified model showed a power function between the shear stress and shear rate that could well capture the shear thickening behavior of mortar mixtures with various aggregate volume fractions and that agreed well with the results of the experimental study. The modified model also demonstrated that aggregate particles could generate local transient particle clusters during interactions due to the particles’ varying velocities, yielding shear thickening.
Pokémon Go did not increase step count or distance travelled among college students

Purpose. Physical inactivity is a well-known problem in the United States, especially among the younger population. Pokémon Go (PG) is a mobile game that has players catch Pokémon while walking in the real world. the purpose of this study was to assess the effect of playing PG on student physical activity. Methods. Overall, 27 healthy undergraduate students participated in a 2-week study. they were randomly assigned to either PG-playing group or control group. Fitbit Charge HR devices were deployed for 2 weeks to all participants. the daily number of steps and distance travelled were recorded and the groups were compared by using the bootstrapped t-test. Results. No statistically significant difference in means was observed when comparing the average daily step count (p = 0.845) or the average daily distance travelled (p = 0.528) between control and PG-playing participants. Furthermore, the mean difference was close to 0 for each comparison, with 95% confidence intervals of –2072 to 2438 steps and –0.609 to 1.31 km, respectively. Conclusions. PG did not lead to a statistically observable increase in the number of steps or distance travelled by university students. these results may provide an impetus to create alternative interventions with better user engagement by applying mobile health apps with the intent to reach low-activity populations.
Sizing and Short-Circuit Capability of a Transformerless HVDC DC–DC Converter

This work aims at optimizing the converter design of the double-T MMC DC–DC converter in terms of transmitted power per submodule and also in terms of transmitted power per silicon area, while, at the same time, providing the capability to block dc faults. Firstly, the converter operation is described and the optimal values of the inner ac and dc voltages that minimize device power rating are derived. Next, the submodule topology is analyzed and a thorough study on the converter capability for blocking fault currents is carried out, showing that the converter is able to isolate dc faults both at the input and at the output of the converter. Finally, the previous analytical study is verified by means of detailed PSCAD simulations.
Generation and Manipulation of Nonclassical Photon Sources in Nonlinear Processes

Nonclassical photon sources are key components in quantum information science and technology. Here, the basic principles and progresses for single photon generation and their further manipulation based on second- or third-order nonlinear processes in various degrees of freedom are briefly reviewed and discussed. Based on spontaneous parametric down-conversion and spontaneous four-wave mixing, various nonlinear materials such as quasi-phase-matching crystals, dispersion-shifted fibers, and silicon-on-insulator waveguides are used for single photon generation. The kinds of entanglement generated include polarization, time-energy, time-bin, and orbital angular momentum. The key ingredient for photon pair generation in nonlinear processes is described and discussed. Besides, we also introduce quantum frequency conversion for converting a single photon from one wavelength to another wavelength, while keeping its quantum properties unchanged. Finally, we give a comprehensive conclusion and discussion about future perspectives for single photon generation and manipulation in nonlinear processes. This chapter will provide an overview about the status, current challenge, and future perspectives about single photon generation and processing in nonlinear processes.
Entropy-Based Approach for the Analysis of Spatio-Temporal Urban Growth Dynamics

Relative Entropy (RE) is defined as the measure of the degree of randomness of any geographical variable (i.e., urban growth). It is an effective indicator to evaluate the patterns of urban growth, whether compact or dispersed. In the present study, RE has been used to evaluate the urban growth of Dehradun city. Dehradun, the capital of Uttarakhand, is situated in the foothills of the Himalayas and has undergone rapid urbanization. Landsat satellite data for the years 2000, 2010 and 2019 have been used in the study. Built-up cover outside municipal limits and within municipal limits was classified for the given time period. The road network and city center of the study area were also delineated using satellite data. RE was calculated for the periods 2000–2010 and 2010–2019 with respect to the road network and city center. High values of RE indicate higher levels of urban sprawl, whereas lower values indicate compactness. The urban growth pattern over a period of 19 years was examined with the help of RE.
BRACHIOPOD ASSEMBLAGES OF THE EURYDESMA FAUNA IN GLACIAL- DEGLACIAL SEQUENCES FROM ARGENTINA AND AUSTRALIA

The Eurydesma Fauna characterizes the Late Pennsylvanian-Permian glacial-postglacial sediments recorded in several Gondwanan basins during the Late Paleozoic Ice Age (LPIA). Brachiopods, as one the most significant components of this fauna, are herein analyzed along with the associated bivalves, in two key sections from western and eastern Gondwana (Bonete Formation in the Sauce Grande Basin, eastern Argentina, and the Wasp Head Formation in the southern Sydney Basin, eastern Australia). The preliminary quantitative analysis indicates a high compositional similarity in both regions but occupancy exhibits important differences: brachiopod-dominated faunas can be found in eastern Australia (Tomiopsis and Trigonotreta are the most frequent taxa), and bivalve-dominated faunas are characteristic in eastern Argentina, where the brachiopods are poorly represented with the genera Tivertonia and Tomiopsis. In this locality, the development of r-strategy taxa, such as the bivalve Eurydesma, during the end of a glacial episode would adversely affect brachiopods’ abundance. This is also consistent with previous studies that indicate that brachiopods already showed a decrease in importance in Pennsylvanian communities from Argentina. Relative abundances of brachiopods and bivalves in both localities may reflect differences in the regional environmental conditions but, unfortunately, eastern Argentina lacks younger records to compare the faunal turnover with that of the Australian sequences. Despite the ecological structural differences identified (i.e. brachiopod:bivalve ratio), the postglacial Eurydesma fauna flourished in western and eastern Gondwana and it is striking that two faunas located on the opposite margins of this paleocontinent show such high compositional similarity during the development of a global postglacial event. This is particularly significant considering that the type of the basins (i.e. restricted vs open basins), biological features, paleoenvironmental conditions directly related to glacial dynamics, and also the diachronism of the transgression, can be controlling the composition of this fauna.
Reliability and Validity of Turkish Version of Headache Impact Test (HIT-6) in Patients with Migraine

Introduction: The Headache Impact Test (HIT-6) is a self-report questionnaire designed to evaluate the impact of headache on quality of life. The aim of this study is to assess reliability and validity of Turkish version of HIT-6 questionnaire in patients with migraine. Methods: A total of 114 patients with migraine were included in this multicenter, prospective, descriptive study conducted at two consecutive visits 4 weeks apart. Comprehensibility, patient-physician reliability, internal consistency, test-retest reliability and validity of the translated HIT-6 were analyzed. Results: Patients identified that HIT-6 items were “well-understood” in both visit 1 (ranged from 88.6% to 95.7%) and visit 2 (ranged from 93.0% to 98.2%). A highly positive correlation (R=0.876, p<0.001) was noted between visit 1 scores related to self-administered and physician-administered HIT-6 scores. Internal consistency analyzed via Cronbach’s α values for visit 1 and visit 2 HIT-6 scores in all patients were 0.753 (acceptable) and 0.864 (excellent), respectively. HIT-6 scores of patients (64.13 (6.20) and 62.70 (7.04), at visits 1 and 2, respectively, p=0.07) showed a moderate test-re-test reliability (R=0.437, p=0.0004). The HIT-6 score positively correlated with visit 1 and visit 2 headache severity-Likert scale (R=0.451 and 0.478, respectively, p<0.001) and VAS (R=0.365 and 0.531, respectively p<0.001) scores, and with visit 2 headache days for a month (R=0.215, p=0.022). Conclusion: These results demonstrated that the Turkish translation is equivalent to English version of HIT-6 in terms of internal consistency and it has moderate test-retest reliability and validity as correlated with headache severity, VAS and headache days for a month.
Journalists as Design Partners for AI

We report on a project exploring the development of an AI-enabled system for researching and verifying news articles. In particular, we underscore the value of journalists in the role of designers in a wider multi-disciplinary team including AI experts and interaction designers. We unpack our learnings by presenting three sensitizing concepts for Human-Centred AI technologies in the context of journalism. We contribute these concepts to provoke discussion and inspiration for design work.
The mediating role of integrative self-knowledge in the relationship between basic psychological needs and cognitive emotion regulation strategies in adolescents

یناساول یلعملاغ دوعسم رتکد هاگشناد هرواشم و یتیبرت یسانشناور هورگ رایشناد نارهت ینیسحریم تاداسلا همطاف )لوئسم هدنسیون( دشرا یسانشراک ناور یسانش هاگشناد ،یتیبرت نارهت بسن یرهطم ارهز ،هرواشم دشرا یسانشراک هاگشناد یمزراوخ شمار هیمس نارهت هاگشناد ،یسانش ناور تملاس یرتکد یوجشناد Dr. Masoud Gholamali Lavasani Associate Professor, Tehran University Fatemeh Sadat Mirhosseini* M. A. in Educational Psychology, Tehran University Zahra Motahari Nasab M. A. in Counselling, Kharazmi University Somaye Ramesh Ph.D Student, Tehran University
Comparative study of the thermal properties of Sesame oil and two mineral oils of different viscosity

Introduction: In recent years the research and development of biolubricants from vegetable oils has increased to minimize the impact on the environment of petroleum derivatives. Objective: In this work, there was realized a comparative study of the thermal properties of the oil of Sesame with those of two mineral oils, of medium and high viscosity (360 and 255), which were free of additives. Method: The characterization of the three oils was performed using the technique of infrared spectroscopy (FT-IR) and physical properties such as kinematic viscosity, density, thermal and oxidative properties were determined by the analysis of Differential Calorimetry Scanning (DSC). Results: The sesame oil had a pour point of – 14.67 ° C, lower temperature than for mineral oils of 255 and 360, (– 4.29 ° C and – 6.89 ° C, respectively). The high content of unsaturated fatty acids (84.86%) could be responsible for this behavior. The oils were stable to temperatures near to 250 °C and with nitrogen atmosphere. Mineral oils were more stable to oxidation because of their high content of fatty acids with saturated hydrocarbon chains which it had no oxidizable sites. Conclusions: Nevertheless, the low stability of sesame oil is due to the high content of unsaturated fatty acids, the use of antioxidant, additive or a chemical modification of the unsaturated chains, this property might be improved to use the oil as a lubricant.
An Extensive Collection of Evaluation Indicators to Assess Occupants’ Health and Comfort in Indoor Environment

Today, the effects of the indoor environment on occupants’ health and comfort represent a very important topic and requires a holistic approach in which the four main environmental factors (thermal comfort, air quality, acoustics, and lighting) should be simultaneously assessed. The present paper shows the results of a literature survey that aimed to collect the indicators for the evaluation of occupants’ health and comfort in indoor environmental quality evaluations. A broad number of papers that propose the indicators of a specific environmental factor is available in the scientific literature, but a review that collects the indicators of all four factors is lacking. In this review paper, the difference between indicators for the evaluation of risk for human health and for comfort evaluation is clarified. For each environmental factor, the risk for human health indicators are proposed with the relative threshold values, and the human comfort indicators are grouped into categories according to the number of parameters included, or the specific field of application for which they are proposed. Furthermore, the differences between human health and comfort indicators are highlighted.