Miracle-dz/UniFAR-FTUs huggingface dataset:
Recursive Dictionary Learning Approach Exploiting Between-Channel Correlations for EEG Signal Reconstruction

In tele-monitoring, wireless body area networks (WBANs), sleep analysis and other applications involving electroencephalogram (EEG) signal, due to the high number of EEG recording channels, long recording time and several repetition of recordings to reach the highest signal-to-noise ratio, the amount of acquired data by the sensors is too large, demanding use of some compression procedure. Compressed sensing can be considered as one of the most effective compression methods in terms of compression ratio, which needs the underlying signal be sparse or have sparse representation in an appropriate domain. EEG signal is not sparse in time domain, therefore, in this paper correlation based weighted recursive least squares dictionary learning algorithm (CBW-RLS) is proposed that uses between-channel correlations to sparsify EEG signals. Due to the low-rank structure of EEG signals, exploiting between-channel correlations increase the sparsity level of the model while reducing the computational cost of dictionary learning procedure. This is done by merely updating the dictionary atoms which are involved in the sparse model of the previous data, reducing the total number of data used at each iteration and speeding up the dictionary learning algorithm. The simulation results show that the proposed method has better performance in terms of both quality of the EEG reconstruction and the computational cost compared to the other methods.
Synthesis and Characterization New Schiff Base Derivatives and Their Complexes with Zn (II) and Ni (II) Dalal.M.Ibrahim,

In recent years, discovering new compounds that have biological activity were studied by many researchers. In this paper, four metal complexes have been synthesized from Ni (II) and Zn (II) chloride and ligands 2-((3-nitrophenylimino) methyl) phenol (HL1) and 2-((4-nitrophenylimino) methyl) phenol (HL2) in 1:2 M ratio. FTIR and molar conductance measurements were used to characterize the structure of complexes. The complexes were found to be non electrolytic on the basis of molar conductance studies. The metal complexes have also been tested for their PH activity at different concentrations by used RSM.
Variable Ordering Structures in Set Optimization

We introduce a variable upper set less order relation and consider set optimization problems equipped with this variable ordering structure. Following a set approach, we provide characterizations for optimal solutions. Furthermore, we consider sections of feasible elements of set optimization problems. In addition, we provide scalarization results for obtaining solutions of set optimization problems equipped with the introduced variable ordering structure. Finally, we present an application of set optimization with a variable ordering structure in medical image registration.
A Furofuranoid Lignan from the Roots and Some Phytochemicals from the Leaves of Aspilia africana (Pers.)

Aspilia africana (Pers.) C. D. Adams, an indigenous Nigerian plant belongs to the phylum Tracheophyta in the family Asteraceae. Investigation into the hot aqueous leaves extract revealed the presence of phytochemicals such as tannins, saponins, flavonoids and glycosides. Alkaloids were however absent. Examination of the roots also gave a brown oil which was identified by its spectra data such as infra-red, mass, proton and 13 C nmr spectra as a furofuranoid lignan (5). Evidence of this comes from the presence of the diagnostic features of the furofurans which include the benzylic protons signal at δ4. 50 as a doublet (J=7), the methylene protons at δ3. 56 as double doublet (J=5; 10) and the methine protons at δ2. 86 as multiplets. The structure of (5) was confirmed by synthesis using ethyl piperonoyl acetate (1). Comparison of the spectra of the naturally occurring compound (5) with that of the synthetic one confirmed that both compounds are the same.
COPD_A_216347 2461..2468

Pierre Labeix 1,2 Mathieu Berger 3 Isabelle Court Fortune Léonard Feasson Samuel Verges Frédéric Costes 1Centre VISAS, Service de Physiologie Clinique et de l’Exercice, CHU St Etienne, France; 2Univ Lyon, UJM SaintEtienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, SaintEtienne F-42023, France; 3Univ Lyon, UJM Saint-Etienne, laboratoire SNA-EPIS, EA4607, Saint-Etienne, France; 4Service de Pneumologie et d’Oncologie Thoracique, CHU St Etienne, France; 5Unité de Myologie, CHU St Etienne, France; 6Université Grenoble Alpes, Inserm, Laboratoire HP2, Grenoble, France; 7Université Clermont Auvergne, INRA, UNH Clermont Ferrand, France; 8Service de Médecine du Sport et des Explorations Fonctionnelles, CHU Clermont Ferrand, France Purpose: Application of non-invasive ventilation (NIV) during exercise improves exercise tolerance in severe COPD patients; however, the underlying mechanism is only partially unraveled. As part of its known effect to unload the respiratory muscles, we looked for the influence of NIV on post-exercise quadriceps muscle endurance. Patients and methods: We included 25 severe COPD patients entering an outpatient pulmonary rehabilitation program. They performed, on successive days, three quadriceps endurance tests at 70% of the maximal strength (1RM) to task failure (TlimQ); 1) control condition; 2) following constant load cycling exercise to exhaustion without Inspiratory Pressure Support (TlimQ IPS-); 3) following the same cycling exercise with IPS (TlmQ IPS+). Results: Dyspnea Borg score was significantly reduced at the end of the constant load cycling exercise with IPS+ compared to IPS(3.5±2.6 to 4.3±2.3, p<0.05). Compared to controlled condition, TlimQ was reduced from 78.9±22.7 s to 64.7±22.1 s (p<0.01) with IPS + and to 48.9±13.7 s (p<0.001) with IPS-. Sensitive analysis revealed a positive effect of NIV on TlimQ in only 15 of the 25 included patients (60%) and was unpredictable from exercise tolerance or maximal quadriceps strength. Conclusion: Using a simple muscle endurance test, we showed the protective effect of NIVon the exercise-induced quadriceps dysfunction. This beneficial effect is inconstant in our small series of patients and could not be predicted by exercise capacity or endurance to exercise. However, measuring quadriceps muscle endurance following a session of exercise could determine in which patient NIV would improve the benefit of pulmonary rehabilitation.
Antioxidant response of the seagrass when epiphytized by the invasive macroalgae

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Antioxidant response of the seagrass when epiphytized by the invasive macroalgae Antoni Sureda, Antonio Box, Jorge Terrados, Salud Deudero, Antoni Pons
A Ray Tracing Algorithm for Multiple Straight Wedge Diffraction

An efficient algorithm for the tracing of multiply edge diffracted rays is presented. The algorithm assumes a given sequence of infinite edges and complete visibility among them; then, the ray tracing problem is formulated as the minimization of the ray total path length. Since such a cost function is strictly convex, except for coplanar edges in the plane-wave far-field regime, then the problem admits a unique global minimum and allows the use of the Newton (or Quasi Newton/Trust Region) search algorithm, that exhibits a very high converging rate. We also propose an ad-hoc modified Newton’s method for the specific problem and a convenient starting point to effectively initialize the minimization algorithm.
The Geographical Enigma of Top Achievements in Weightlifting

We examined the geography of top achievements in weightlifting in the Olympic Games for men (1992-2016), and women (2000-2016). Geographic origins of men are restricted to countries with a salient center around the Balkan and the Caucasus areas. This is especially evident for weightlifters in the upper body weight categories. Top achievements of women are more widely spread geographically, yet with clustering in the south-eastern part of Asia. Data on participation in the Olympic Games suggest that this unbalanced geographical spread of men is unlikely to be explained by cultural preferences but rather by specific physical adaptations. This conclusion receives further support from considering weight to height ratio of athletes winning gold medals relative to the average in the general population.
A LOW POWER PROGRAMMABLE BANDPASS FILTER FOR DIGITAL RADIO MONDIALE

In this paper, an inverter based transconductor using double CMOS pair is proposed for implementation of a programmable bandpass filter suitable for Digital Radio Mondiale (DRM). Major contributions of this paper are: proposal for operating the transconductance (Gm) stage in sub-threshold region in order to minimize the power dissipation, proposal for switching in different Gm cells with suitable dummy stages for varying the centre frequency (F-tuning) and filter pass band (Qtuning), proposal for a digital tuning technique for the filter based on phase comparison method for PVT compensation. The filter circuit is based on a biquad Gm-C topology, which is designed and implemented on CMOS 0. 18μm technology with 1.8V supply using gm/Id design methodology. The post layout simulation results demonstrate the tunability of the centre frequency from 2MHz to 11MHz with quality factor tunable up to 50, which meets the requirements of DRM (upto 30MHz). Post layout simulation results show that the filter exhibits an in-band dynamic range of 53dB at gain of 7dB. An input IP3 of up to 28dBVp is achieved for an input signal of 100mVp. The SFDR over the entire bandwidth is 57dB. These features are obtained for a total power consumption of less than 300 μW from a single 1.8 V power supply with an estimated silicon area of 0.3mm. The proposed approach guarantees the upper bound on THD to be -40dB for 300mVpp signal swing. The use of inverters with double CMOS pair results in 34dB higher PSRR compared to those using push pull inverter.
Running head: PRESSURE ULCER PREVENTION: INNOVATION AND RESEARCH 1 PRESSURE ULCER PREVENTION: INNOVATION AND RESEARCH PRODUCE POSITIVE OUTCOMES by

Acquiring a pressure ulcer while in the hospital is a devastating outcome for the patient and their family. Pressure ulcer formation in the medical surgical patient population reflects a gap in practice because it is the nursing staff’s responsibility to reposition and protect the patient from developing pressure ulcers. The purpose of this project was to answer the following question. For patients on a medical surgical unit, how does the implementation of a pressure ulcer toolkit, along with the use of an automated patient repositioner (APR), affect the rate of the hospital acquired ulcers over a ten week period? A medical surgical unit of approximately 20 inpatient beds in a southern hospital experienced an increase in pressure ulcers over that last two years. The plan, do, study, act was the change methodology used to frame the quality improvement project. In addition, Lewin’s theory of change was used to infuse a change in practice for the nursing staff to reposition high risk patients with every patient interaction. After utilizing the Agency for Healthcare Research and Quality (AHRQ) toolkit for pressure ulcer prevention and the use of the APR with every patient interaction, the medical surgical unit went from experiencing three to four pressure ulcers forming on patients each month, to zero for a consecutive three months. The AHRQ toolkit for pressure ulcer prevention supports the use of innovative tools, like the APR, which was successful at preventing pressure ulcer formation for patients highly susceptible for skin breakdown and could be systematically adopted in multiple units in the organization.
Spatial Asymmetric Tilt of the NAO Dipole Mode and Its Variability

The dipole structure of the North Atlantic Oscillation (NAO) is examined in this study by defining the tilt of the NAO dipole centers on synoptic time scales. All the positive NAO phase (NAO+) and negative NAO phase (NAO−) events are divided into three tilting types according to their definition; namely, northeast–southwest (NE–SW), north–south symmetric (N–S, not tilted), and northwest–southeast (NW–SE) tilting NAO events. Then, the associated surface air temperature (SAT), geopotential height, zonal wind, and SST (surface sea temperature) anomalies of each type are examined. It is found that, for different asymmetric NAO tilt types, the local SATs exhibit significantly different distributions. The zonal wind has a good match with the NAO dipole tilt, which also includes the positive feedback of the NAO circulation. The basic zonal flow that removes the NAO days also exhibits a clear tilt structure that favors the tilt of the NAO dipole. Moreover, it is found that the Atlantic Multidecadal Oscillation (AMO) may be an important factor affecting the tilt of the NAO dipole. The AMO index has a significant 15-year lead for the NAO index and basic zonal flow index, with a high correlation coefficient, which might be seen as a precondition that indicates the tilt of the NAO events, especially on decadal or multidecadal time scales. However, the physical mechanisms and processes are still not fully understood.
PHANTOM and GHOSTDAG A Scalable Generalization of Nakamoto Consensus February 2, 2020

In 2008 Satoshi Nakamoto invented the basis for blockchain-based distributed ledgers. The core concept of this system is an open and anonymous network of nodes, or miners, which together maintain a public ledger of transactions. The ledger takes the form of a chain of blocks, the blockchain, where each block is a batch of new transactions collected from users. One primary problem with Satoshi’s blockchain is its highly limited scalability. The security of Satoshi’s longest chain rule, more generally known as the Bitcoin protocol, requires that all honest nodes be aware of each other’s blocks very soon after the block’s creation. To this end, the throughput of the system is artificially suppressed so that each block fully propagates before the next one is created, and that very few “orphan blocks” that fork the chain be created spontaneously. In this paper we present PHANTOM, a proof-of-work based protocol for a permissionless ledger that generalizes Nakamoto’s blockchain to a direct acyclic graph of blocks (blockDAG). PHANTOM includes a parameter k that controls the level of tolerance of the protocol to blocks that were created concurrently, which can be set to accommodate higher throughput. It thus avoids the security-scalability tradeoff which Satoshi’s protocol suffers from. PHANTOM solves an optimization problem over the blockDAG to distinguish between blocks mined properly by honest nodes and those created by non-cooperating nodes who chose to deviate from the mining protocol. Using this distinction, PHANTOM provides a robust total order on the blockDAG in a way that is eventually agreed upon by all honest nodes. Implementing PHANTOM requires solving an NP-hard problem, and to avoid this prohibitive computation, we devised an efficient greedy algorithm GHOSTDAG that captures the essence of PHANTOM. We provide a formal proof of the security of GHOSTDAG, namely, that its ordering of blocks is irreversible up to an exponentially negligible factor. We discuss the properties of GHOSTDAG and how it compares to other DAG based protocols.
Frequency Splitting and Transmission Characteristics of MCR-WPT System Considering Non-Linearities of Compensation Capacitors

The frequency splitting phenomenon and transmission characteristics have been research hotspots in the field of magnetically coupled resonance wireless power transfer (MCR-WPT). In this paper, non-linear dynamics theory was innovatively introduced into the research, and non-linear coupled transmission dynamics modelling of the MCR-WPT system was established considering the non-linearities of the compensation capacitor. The mechanism of the frequency splitting phenomenon of the MCR-WPT system was revealed through systematic mathematical analyses based on the modelling. The analysis results showed that the system usually has dual natural frequencies which are low resonance frequency and high resonance frequency. Based on non-linear dynamics theory, the transmission characteristics of the system with different non-linear parameters were discussed comprehensively in relation to the modelling. The results of the numerical simulations and theoretical analyses showed that non-linear parameters can cause the jumping phenomena with the output responses, and the output responses in the vicinities of the lower resonance frequencies were extremely sensitive to changes in the coupling coefficient. According to analyses of the linear and non-linear systems, the energy transmissions performed in the vicinity of the high resonance frequency had a wider working frequency band and a better transmission stability under non-linear conditions.
Characterization and technological behavior of basalt raw materials for Portland cement clinker production

This paper aims to characterize basaltic rocks as alternative raw materials for Portland cement clinker production and evaluate its possible use as an addition for the cement industry. It describes the physical, chemical and micro-structural characterization of the basalt clinker as well as the effect of its addition to Portland cements on the hydration, water demand, setting and mechanical strength of standardized mortars. The basalt blends may be used successfully as an aluminum silicate raw material for partial substitution of the conventional raw materials, leading to resources conservation and ensuring the quality of the produced cement. Investigating the use of basalts together with limestones materials may be essential in terms of the Cement Technology. Basalts blend decreases specific gravity of cements. Compressive strength test results of basalt blended cements indicated that basalt reacted with elements present in the medium in long term and also increased the strength values. The research reported in this manuscript demonstrates the potential of using basaltic rocks as a feedstock replacement in conventional Portland cement manufacture. It was shown that kiln operational conditions may have to be adjusted depending upon the quartz content of the basalts. The potential of this technology to contribute significantly to the sustainable management of basalt rocks were demonstrated by virtue of the annual volume of material consumable and the apparent technical feasibility of the approach.
Advanced Recovery Techniques for Waste Materials from IT and Telecommunication Equipment Printed Circuit Boards

Waste from information technology (IT) and telecommunication equipment (WITTE) constitutes a significant fraction of waste from electrical and electronic equipment (WEEE). The presence of rare metals and hazardous materials (e.g., heavy metals or flame retardants) makes the necessary recycling procedures difficult and expensive. Important efforts are being made for Waste Printed Circuit Board (WPCB) recycling because, even if they only amount to 5–10% of the WITTE weight, they constitute up to 80% of the recovered value. This paper summarizes the recycling techniques applicable to WPCBs. In the first part, dismantling and mechanical recycling techniques are presented. Within the frame of electro-mechanical separation technology, the chain process of shredding, washing, and sieving, followed by one or a combination of magnetic, eddy current, corona electrostatic, triboelectrostatic, or gravity separation techniques, is presented. The chemical and electrochemical processes are of utmost importance for the fine separation of metals coming from complex equipment such as WPCBs. Thermal recycling techniques such as pyrolysis and thermal treatment are presented as complementary solutions for achieving both an extra separation stage and thermal energy. As the recycling processes of WPCBs require adequate, efficient, and ecological recycling techniques, the aim of this survey is to identify and highlight the most important ones. Due to the high economic value of the resulting raw materials relative to the WPCBs’ weight and composition, their recycling represents both a necessary environmental protection action, as well as an economic opportunity.
Mining Bibliographic Patterns

The need to interchange information in a standardized way, to reduce cataloguing costs and to increase quality of results, led to the creation of multiple cataloguing standards. The bibliographic world has been guided by normalized formats to describe its records, UNIMARC and MARC21. These formats have been effective, but they denote some inadequacy relating to actual Internet paradigm. FRBR is a new and revolutionary model that offers a fresh perspective on the structure and relationships of bibliographic and authority records that and intends to be independent of any cataloguing code or implementation. Data mining had been used fewer times for this purpose, therefore, this work aims to use data mining techniques to identify the hidden patterns in UNIMARC data from Portugal’s National Library. These hidden relationships between elements in those MARC formats are likely to help map them into FRBR elements. And therefore, facilitate the change to FRBR paradigm. Despite the UNIMARC define a common structure for the exchange of bibliographic records, in a machine-readable form, this format is not suitable for data mining, since it is not tabular. The data cannot easily be arranged in a table or in a systematic arrangement by columns and rows. And traditional data mining algorithms deal with a table. This limitation implies an extra step of pre-processing of data in UNIMARC, to convert it to a table. This has several challenges:
Excitons States in Semiconductor Quantum Dots

It was found that within the band gap of the quantum dot of zinc selenide appears a zone of exciton states, located at the bottom of the conduction band. It has been shown that a decrease in the band gap width in this nanosystems conditioned by transition of the electron from quantum-dimensional level within the valence band of the quantum dot to the levels of the zone of exciton states. The dependence of the energy of a base state of an exciton from the radius of QD was obtained using a modified method of the effective mass.
Histomorphological and histochemical structure of the midgut and hindgut of the Caucasian honey bee (Apismelliferacaucasia)

The Caucasian honey bee (Apis mellifera caucasia subspecies of Apis mellifera L.) is one of the most common and prominent honey bee breeds in Turkey. The morphometry of endemic honey bee breeds has been extensively studied, but little attention has been given to the microscopic morphology of these bees. The aim of the current study was to describe for the first time the histomorphology of the midgut and hindgut of the Caucasian honey bee in Turkey. A total of 20 local Caucasian adult honey bee workers were sampled for histomorphological and histochemical analysis. The midgut epithelium consisted of epithelial cells with different morphologies. Acidic, neutral, and mixed mucosubstances were found in the luminal surfaces of the cells and peritrophic membranes. The ileum mostly consisted of an epithelium containing columnar cells that usually had basal nuclei. The rectum of adult workers had a single-layered epithelium externally, involving a layer of inner circular and outer longitudinal muscles. There were 6 long hollow rectal pads in the median-anterior area of the rectum. These results contribute in detail to our understanding of the histomorphology of the Caucasian (A. m. caucasia) honey bee.