Miracle-dz/UniFAR-FTUs huggingface dataset:
A New Monitoring and Control Method for Improving Voltage Stability Margin

A novel method for assessing and managing the voltage stability of the power systems is proposed in this paper. In the proposed method, a predictor-corrector continuation power flow technique is used to trace the active power versus voltage curves (PV curves). As a result, the voltage profiles under various system conditions can be analyzed until maximum loading is reached. Furthermore, the optimality of voltage regulations is achieved by managing the voltage control devices (on-load tap changers, shunt capacitors, and reactors). The mixed-integer linear programming (MILP) approach, which considers the operations constraint, is used to formulate the optimization problem and minimize the control operations. The novelty of the proposed method lies in considering the infeasibility of the control problem, where there is no feasible region and voltages can no longer be controlled within the upper and lower limits. In these cases, the method acts effectively in minimizing the overall voltage violations.
A Low-Voltage Broadband D-Band BPSK Modulator for a PMCW Radar Transmitter in 22 nm FDSOI

This work presents a broadband low-voltage binary-phase-shift-keying (BPSK) modulator operating in the D-band. The modulator is intended for a phase-modulated continuous-wave (PMCW) radar transmitter with a chip rate of up to 12.5 Gb/s and integrated into an advanced 22 nm fully-depleted silicon-on-insulator (FDSOI) technology. The circuit covers a bandwidth of 34 GHz at a carrier frequency of 140 GHz with a maximum conversion gain of 2.5 dB. A 1 dB output compression point of -7.2 dBm is reached while consuming 27 mW DC-Power at a supply voltage of only 0.8 V and a circuit core area of 0.051 mm2.
Resurfacing com laser fracionado para cicatrizes atróficas de acne: avaliação na população brasileira Fractional Laser resurfacing for atrophic acne scars: evaluation in the Brazilian population

Introduction: With several treatment options available – including laser – atrophic acne scars are nonetheless difficult to treat. The use of fractional technology results in dermal-epidermal ablation co lumns, interspersed with intact skin islands, allowing selective thermal damage, effective treatment and faster recovery. The objective of the present study is to demonstrate the efficacy and safety of fractional laser use in the treatment of atrophic acne scars among the Brazilian population. Methods: An open, prospective, interventional study was carried out with patients with acne scars, without restriction regarding the gender and skin phototype. Exclusion criteria were: pregnancy, breast-feeding, presence of infections or blood dyscrasias and the use of anticoagulants. The evaluation was performed by comparing texture, appearance, and relief as observed in digital photographs. Results: Of the 30 selected patients, 24 were included in the study. An improvement was noted in the parameters evaluated in the cases that underwent fractional laser (CO2, Erbium-Glass or both). Individuals who underwent multiple treatments showed better results. All those treated with 4 sessions had improvements greater than 50%. Post-inflammator y hyperpigmentation was detected in 7 of the 24 treated patients. Conclusion: The present study showed that, when using appropriate parameters and adequate care, fractional laser-assisted resurfacing is an effective and safe method for treating atrophic acne scars in
MONDOR'S DISEASE OF THE BREAST RESULTING FROM JELLYFISH STING

OBJECTIVE: To present two cases of Mondor's disease of the breast resulting from jellyfish stings in Western Australia. CLINICAL FEATURES: A 30-year-old Caucasian woman presented with a palpable thickened cord in her right breast. The straightness of the cord suggested a thrombosed lymphatic. A 50-year-old Caucasian woman presented with an obvious palpable cord extending most of the length of her left breast. Mammography demonstrated no abnormality. Both women reported having been stung by jellyfish a month earlier. INTERVENTION AND OUTCOME: As Mondor's disease is a benign, self-limiting disease, the patients were reassured and reviewed routinely. In each case, the condition settled spontaneously over a period of several weeks. CONCLUSION: Jellyfish stings should be recognised as an unusual variant of the numerous causes which have been described for Mondor's disease.
Wideband Co-Linearly Polarized Antenna for Simultaneous Transmission and Reception Applications

A wideband co-linearly polarized antenna is proposed for the simultaneous transmission and reception (STAR) application in the same frequency. It has good isolation between the transmitting and receiving ports and identical radiation properties over a wide frequency band, based on two partially overlapped basic magneto-electric (ME) dipoles and the modified central part, forming a defected rectangular tube suspended above the ground plane. The antenna also has a simple structure. A prototype is fabricated and measured for validation, showing the measured port isolation higher than 22 dB from 1.90-2.91 GHz (42.0%) and up to 42 dB and good radiation performance.
Epidemiologie nadváhy a obezity ve vybraných zemích světa

The bachelor's thesis "Epidemiology of overweight and obesity in selected countries of the world" deals with the prevalence of overweight and obesity in populations living in select countries on all continents. In the thesis the terms overweight and obesity are defined. There is also a brief description of selected clinical signs of obesity and overweight and methods for their assessment. Attention is also paid to etiology and pathogenesis of overweight and obesity. The health, social and economic consequences of excessive body weight on the obese patients and the whole society are briefly described too. A substantial part of the bachelor's thesis summarizes data on the prevalence of obesity in populations living in the European Union countries and selected countries in other continents.
Propagation Channel Characterization of 28 GHz and 36 GHz Millimeter-Waves for 5G Cellular Networks

Recent advances in 5G wireless technologies calls for larger bandwidth, which motivates design engineers and researchers to explore a higher frequency spectrum than the existing one spectrum of below 6 GHz. Millimeter-wave (mm-Wave) is viewed as the most suitable spectrum to satisfy the constraints for 5G and beyond cellular systems. However, it is observed that enabling mm-Wave can bring several issues like path loss, fading, scattering, coverage inadequacy, penetration loss, and signal attenuation problems. Therefore, augmenting the propagation path is important to indicate the behavior of the wireless channel prior to its deployment in the real-world environment. For this reason, we aim to analyze the two most promising mm-Wave frequency bands; 28 GHz and 36 GHz. We have selected the most popular Close-In (CI) & Floating-Intercept (FI) propagation path loss models that helped us to design an urban microcell line of sight (LOS) scenario. Finally, the overall network performance has been investigated by evaluating average user throughput, average cell throughput, cell-edge user throughput, peak user throughput, and spectral capacity. Our results show that the CI model performs much better than the FI model due to its high accuracy, simplicity of implementation, robustness, and single-factor dependency.
Estimation of Time-Varying Channels in Virtual Angular Domain for Massive MIMO Systems

This paper is concerned with the problem of channel estimation in virtual angular domain in massive MIMO orthogonal frequency division multiplexing (OFDM) systems, in the presence of time varying channels. The proposed channel estimator is based on dichotomous coordinate decent joint sparse recovery (DCD-JSR) algorithm, which was well suited for massive MIMO systems with channels static over several OFDM symbols, but it is not accurate for time-varying channels. The estimator proposed in this paper exploits the basis expansion model (BEM) for approximation of the time-variation of the channel and the sparsity of the channel in the virtual angular domain with a common support over OFDM subcarriers and OFDM symbols for joint estimation of the BEM expansion coefficients. It is shown that, when using the Legendre polynomials as the BEM and depending on the normalized Doppler frequency, only a small number of expansion coefficients is required to provide accurate channel estimation.
Structuring Cyber-Physical Systems for Distributed Control with IEC 61499 Standard

With the constant growth in size and complexity of modern industrial applications, it is not suitable to use a unique and centralized controller device for the whole process. Thus, automation solutions need to be designed by distributing control execution across different devices. Cyber-Physical Systems (CPSs) are designed to solve networked embedded systems complexities. The IEC 61499 standard fosters developing distributed control applications by defining a platform-independent application model that can be mapped to numerous hardware components. Therefore, a relevant research topic is how to solve the design complexities of industrial CPSs by applying modeling techniques. In that context, this paper proposes an IEC 61499-based model for CPSs to distribute the complexity of control software over numerous small devices. The approach enables the creation of a comprehensive structure that can combine design, simulation, and distributed deployment of automation software. The proposed scheme is validated through a packet sorting system implemented in a commercial IDE platform.
On Fractional-order Capacitive Wireless Power Transfer System

Wireless power transfer is becoming an increasingly viable solution for the electrical powering of various electronic gadgets. However, precise outputs are not guaranteed with integer systems, so fractional-order capacitors are vital. This paper studies a four-plate fractional capacitive power transfer system by varying six orders of capacitors between the plates along with the load resistance. A mathematical model based on a $4\times 4$ mutual fractional capacitance matrix is established for equidistantly placed four identical metal plates. Moreover, the chosen circuit topology is identified and analyzed based on the proposed model.
How can we explore atherosclerotic plaque composition and regression

It used to be axiomatic that atherosclerosis was continuous, cumulative, and irreversibly associated with aging. However, since 1989, when the first evidence of treatment-induced lesion regression was obtained in animals, it has become increasingly apparent that the ultimate challenge-reversal of established atherosclerosis-is feasible. Intervention studies depend on accurate measurement not only of plaque dynamics, but increasingly of plaque composition and metabolic activity. It is important to be able to identify vulnerable plaques. In addition to intravascular ultrasound and its derivatives, merged modalities have been developed to provide valuable molecular and metabolic imaging, eg, using fluorodeoxy glucose positron emission tomography or ultrasmall superparamagnetic iron oxide nanoparticles and multi-detector computed tomography.
Critical Load Identification for Load Redistribution Attacks

The smart integration of communication and information technology into electrical power grids has significantly benefited the monitoring and operations of the grid, but it has also made it vulnerable to cyber attacks. A Load Redistribution (LR) attack is a type of attack in which the attacker manipulates one or more load requests to create an overflow (congestion) in a transmission line. The cost and limitations of conventional detectors have motivated researchers to explore Machine Learning (ML) and data driven mechanisms for detecting potential LR attacks. The expanding nature of the grid and the rapidly increasing number of loads on a grid necessitates the monitoring of a huge number of points and creates a data deluge for the ML-based detectors, thereby adversely affecting their performance. This paper provides an approach for identifying a subset of loads, namely critical loads, that needs to be monitored for detecting LR attacks. This helps the grid operator to monitor fewer loads thereby reducing the cost of monitoring the loads, the detection time, and the computational burden. The proposed approach is implemented on the IEEE 30 bus system. The results validate the fact that LR attacks can be detected by monitoring only the identified critical loads, without adversely affecting the performance of the ML detectors.
Late-onset brain abscess due to group B Streptococcus

Abstract Background: Group B Streptococcus (GBS) is the most common pathogen responsible for perinatal bacterial infections. While the early-onset (EO) disease typically presents with pneumonia or sepsis, bacteremia and meningitis represent usual presentation of late-onset (LO) disease. Other clinical manifestations are relatively rare. Highlights: Here we describe an infant with a brain abscess due to a late-onset, GBS serotype I infection. A previously healthy 42-day-old baby presented with insufficient sucking, vomiting, irritability and fever. Cerebrospinal fluid (CSF) analysis, cultures and magnetic resonance imaging (MRI) confirmed the diagnosis of type I group B streptococcal meningitis with brain abscess. The patient made full recovery after a 4-week course of treatment with meropemen and ampicillin. No surgical drainage of the abscess was required. At a 3-year follow-up, the patient had a normal global development with no neurological sequelae. Conclusions: Brain abscess due to GBS late-onset infection is very rarely described. Furthermore, type I GBS is infrequent in late-onset disease. Therapeutic choices in these neonates are challenging because of lack of standards. A long-term follow-up of late-onset disease survivors is mandatory to exclude late developmental impairment.
Integration of spectroscopy and imaging to optimize evaluation of voiding dysfunction

Voiding dysfunction occurs due to the interplay of anatomic, physiologic and functional elements. Hence, integration of new imaging and spectroscopy modalities offers the potential for improving patient assessment by enabling the causal structural defects, formal staging of pelvic floor dysfunction and underlying physiologic mechanisms to be better defined. The purpose of this review is to outline the limitations of current imaging, and highlight the advantages of newer technologies in the evaluation of patients with voiding dysfunction due to loss of structural integrity of the pelvic floor. The everyday action of voiding belies the complex interplay of neural control of the voiding cycle, precise function of healthy organ systems and hemodynamic changes in the microcirculation required for the bladder to fill and empty normally. Brain mediated control initiates voluntary voiding, and integrity of the spinal cord is required to transmit neural signaling to the bladder. A spino-bulbo-spinal reflex is integral to voluntary voiding while urine storage is dependent on lumbosacral spinal reflexes (27). The bladder microcirculation is uniquely adapted to maintain perfusion as the organ's size and wall thickness alter as it fills and empties, and to preferentially perfuse the detrusor muscle prior to bladder contraction. The structure of the pelvic floor is integral to continence; with incontinence in various forms a consequence of the effects of damage, structural weakness or organ prolapse. Urinary incontinence due to loss of pelvic floor integrity is a complex condition. With aging and the effects of illness and injury the normal supportive function of the pelvic floor muscles, ligaments and fascia becomes compromised. Progressive reduction or traumatic loss of soft tissue support results in pelvic organ prolapse (POP), which is a prevalent and debilitating disorder (25). POP is part of the spectrum of abnormalities occurring with pelvic floor dysfunction (35). POP is defined as abnormal symptomatic displacement of the pelvic organs from their normal anatomic position; herniation of some or all of the pelvic viscera occurs, including the urethra, bladder, vaginal vault, cervix, small bowel,
Vaginal flora in asymptomatic women.

: Four groups of 25 asymptomatic women--pregnant, premenopausal and taking oral contraceptives, premenopausal and not taking oral contraceptives, and postmenopausal--were studied for the presence in vaginal specimens of aerobic bacteria, anaerobic bacteria, fungi, Mycoplasma, Chlamydia, herpes simplex virus, mycobacteria, and Trichomonas. No significant differences in microbial flora were found among the groups.
Phase-dependent strategy to mimic quantum phase transitions

This study proposes a hybrid quantum system of an ensemble of collective spins coupled to a surface acoustic wave (SAW) cavity through a sideband design. Assisted by a dichromatic optical drive with a phase-dependent control, this spin ensemble can effectively mimic different types of long-range Lipkin–Meshkov–Glick (LMG) interactions and then undergo quantum phase transitions (QPTs) due to phase-induced spontaneous symmetry breaking (SSB). In addition, this phase-controlled scheme also ensures the dynamical preparation of the spin-squeezed state (SSS), which may be a useful application in quantum measurement. This study is a fresh attempt at quantum manipulation based on acoustic control and also provides a promising route toward useful applications in quantum information processing, especially the adiabatic preparation of multiparticle-entangled ground states via QPTs; i.e., the Greenberger–Horne–Zeilinger (GHZ) or W-type states.
Two large squirrels (Rodentia, Mammalia) from the Junggar Basin of northwestern China demonstrate early radiation among squirrels and suggest forested paleoenvironment in the late Eocene of Central Asia

Fossil evidence is indispensable for studying the derivation, divergence, and dispersal of squirrels as they responded to global Cenozoic climatic and paleoenvironmental change. Among these fossil records, the earliest known definitive fossil squirrels in Eurasia occur after the Eocene/Oligocene Boundary and are slightly younger than the oldest records in North America. Here, we report the discovery of two new extinct large squirrel species from the late Eocene of the Junggar Basin in northwestern China. The dental morphologies of these new taxa represent tree and flying morphotypes, and their estimated body masses are approximately 1.2 kg and 2.6 kg, respectively. In addition, these extinct lineages push the age of the first appearance of Sciuridae in northern Asia into the late Eocene. Together with Douglassciurus and Oligospermophilus from North America, these two new squirrels from the Junggar Basin are the earliest records of sciurids, and analysis of their teeth clearly demonstrates that the three principle morphotypes of sciurids (flying, ground, and tree squirrels) had diverged from one another by the late Eocene. That proposed late Eocene divergence among the major groupings of sciurids is consistent with some molecular clock analyses and helps to document that macroevolutionary timing and pattern. Comparison with modern squirrel analogs for body masses over 1 kg points to these early Chinese species as having occupied forested habitats, and that hypothesis is congruent with published palynological studies. Furthermore, these two new squirrel taxa from Jeminay provide new data to evaluate the examination of the long-term aridification of Central Asia.
Investigations on leishmaniases at the E.I. Martsinovsky Institute of Medical Parasitology and Tropical Medicine

: The paper assesses the investigations on leishmaniases at the E.I. Martsinovsky Institute of Medical Parasitology and Tropical Medicine in 1920 to 2009. The analysis includes papers on biology, ecology, taxonomy, and experimental transmission of the agents of leishmaniases via the bites of sand flies, the principle in the control of zoonotic cutaneous leishmaniasis (ZCL) during the agricultural development of extensive territories in the Karshin steppe, on quantitative approaches in the epidemiology of ZCL, a search for Russian effective medicaments to treat patients with this disease and the development of criteria for selecting L. major strains for individual and mass vaccinations against ZCL, the revision of Leishmania circulating in great gerbil populations, and the description of the new species L. turanica, an important parasite for L. major persistence from one transmission season to the next. The first investigations on leishmaniasis were made by Prof. E.I. Martsinovsky, the founder and the first director of the Institute in the early 20th century.
Physiological and biochemical responses of Isatis indigotica to deficit irrigation in a cold and arid environment

Water shortage and wastage are critical challenges to sustainable agricultural development, especially in arid and semiarid regions worldwide. Isatis indigotica (woad), as a traditional Chinese herb, was planted in a large area in a cold and arid environment of Hexi. Regulated deficit irrigation can reduce the growth of some vegetative organs by changing the accumulation and distribution of photosynthetic products in crops, thus increasing the economic yield of crops. In agricultural production, crop productivity may be improved by mulched drip irrigation and deficit irrigation. Hence, a field experiment was conducted to investigate the responses of photosynthesis, malondialdehyde, osmotic regulators, antioxidant enzyme activities, and the yield of woad to water deficit at different growth stages. The growth stage of woad was divided in four stages: seedling, vegetative growth, fleshy root growth, and fleshy root maturity. During vegetative growth, fleshy root growth, and fleshy root maturity, three water gradients were set for plants with mild (65–75% in field water capacity, FC), moderate (55–65% in FC), and severe (45–55% in FC) deficits, respectively. In contrast, an adequate water supply (75–85% in FC) during the growth period was designed as the control (CK). The net photosynthetic rate (Pn), transpiration rate, and stomatal conductance of woad significantly decreased (P< 0.05) by moderate and severe water deficits. Still, rehydration after the water deficit could produce a noticeable compensation effect. In contrast, malondialdehyde and proline accumulation significantly increased under moderate and severe water deficits. At the same time, the superoxide dismutase, peroxidase, and catalase all had high activities (increased significantly by 19.87–39.28%, 19.91–34.26%, and 10.63–16.13% compared with CK, respectively), but yields were substantially lower, compared to CK. Additionally, the net photosynthetic rate was negatively correlated with antioxidant enzyme activity. The economic yield of plants subjected to continuous mild water deficit during both vegetative and fleshy root growth was not significantly different from that in CK. Still, the water use efficiency improved significantly. Therefore, the continuous mild water deficit during vegetative and fleshy root growth could improve the physiological and biochemical mechanisms of the plant, representing an optimal irrigation strategy for woad in cold and arid areas.