Miracle-dz/UniFAR-FTUs huggingface dataset:
High‐efficiency balanced power amplifier using miniaturized harmonics suppressed coupler

A novel balanced power amplifier (BPA) using compact coupler with rhombus resonators is presented. In this design, a new method is presented to analyze the proposed rhombus‐shaped resonator based on the LC equivalent circuit. A new class F power amplifier is designed to improve performances of the BPA. The results show that the performance of the proposed BPA is improved by using the proposed harmonic suppressed coupler at the design structure. The designed BPA operates at 1.25 GHz and delivers 29 dB output power with a gain of 17.9 dB and drain efficiency (DE) of 65.2%. The presented BPA is realized using ATF‐34143 transistors in GaAs pHEMT technology and fabricated on the RT/Duroid 5880 substrate with a thickness of 31 mil.
Ontogenetic Increase in Archimedean Weight of the Ostracod Chlamydotheca unispinosa (Baird)

To investigate Przibram's Law for living ostracods, speci- mens of Chlamydotheca unispinosa (Baird) from an aquarium culture were weighed in water with a torsion microbalance. For each interval representing an ecdysis between the fifth and eighth instars, the Archi- medean weight increases remarkably close to twice its former value. For the interval representing the ecdysis between the eighth instar and the adult, the increase 'is slightly more. The greater increase during the final molting probably results from the development of sex organs as maturity is attained.
Variations of the natural abundances of nitrogen and carbon isotopes in Triticum aestivum, with special reference to phloem and xylem exudates.

This work explored whether the natural abundances of carbon and nitrogen isotopes could be used to describe the movement of C and X within wheat plants; we also considered whether isotopic analyses of aphids or their honeydew would substitute for direct analysis of phloem exudate. The δ13 C of ears and roots (sinks) most closely matched those of the sugars + organic acids fraction (sources) in both growth stages; phloem δ13 C matched that of leaf blade sugars. Xylem exudate δ13 C matched no other putative (and measured) source in the ear-forming stage and matched that of whole roots and ears in the grain-filling stage. The δ15 N of grain and roots (sinks) resembled that of leaf amino acids (sources) in the ear-forming stage. In the gram-filling stage, ear δ15 N continued to resemble that of leaf amino acids, and δ15 N of roots most closely resembled that of whole leaves. In the grain-filling stage, phloem δ15 N fell between that of leaf blade amino acids and that of whole leaves and was 15 X-depleted relative to internal and external NO, -N. In both growth stages, xylem exudate δ15 N was less than that of soil NO3 - -N and more than that of residual soil N after mineral N extraction. The isotopic values are generally in agreement with data from other approaches, such as isotope labelling; they show NO3 - -N reduction in both shoots and roots of wheat and significant N recycling (root-shoot-phloem-root) and C movement. Aphids might serve as a substitute for isotopic analysis of phloem δ15 N. having the same value as their food source. Their excreta was 15 N-enriched relative to phloem.
LA BRECHA ENTRE LA INVESTIGACIÓN Y LA PRÁCTICA CLÍNICA: HACIA LA INTEGRACIÓN DE LA PSICOTERAPIA

espanolLa brecha entre investigacion y practica clinica constituye uno de los rasgos distintivos de la psicoterapia. Esta brecha se ha conceptualizado historicamente como un problema de diseminacion unidireccional. Sin embargo, existen razones consistentes para considerar que la desarticulacion entre ciencia y practica tambien responde al modo en que se ha venido produciendo el conocimiento cientifico en el campo. En el presente articulo se desarrollan algunos de los principales aspectos que, hasta la fecha, han obstaculizado la construccion de una ciencia integrada de la psicoterapia y la implementacion de la mejor investigacion disponible en los entornos clinicos naturales. En particular, se presenta el paradigma de la Investigacion Orientada por la Practica (IOP) como una aproximacion que aporta propuestas especificas para articular la brecha entre investigacion y practica con el doble proposito de mejorar tanto la calidad de los proyectos de investigacion que se realizan como la practica clinica habitual. EnglishThe gap between research and clinical practice constitutes one of the distinctive features of psychotherapy. This gap has historically been conceptualized as a problem of unidirectional dissemination. However, there are compelling reasons to consider that the disarticulation between science and practice also responds to the way in which scientific knowledge has been produced. This article describes some of the main aspects that, to date, have hindered the development of an integrated science of psychotherapy and its implementation in naturalistic clinical settings. The paradigm of practice-oriented research (POR) is presented as an approach that provides specific proposals to bridge the gap between research and practice with the dual purpose of improving the quality of both research projects that are carried out and routine clinical practice.
A Digital-Intensive Extended-Range Dual-Mode BLE5.0 and IEEE802.15.4 Transceiver SoC

The proposed fully integrated digital-intensive system on chip (SoC) allows dual-mode protocols of Bluetooth low energy (BLE) 5.0 and IEEE802.15. 4 with extended-range wireless connectivity and <italic>ad hoc</italic> mesh networks for Internet-of-Things (IoT) systems in wireless sensor networks. The SoC fully integrates a dc–dc converter, LDOs, a digitally controlled crystal oscillator (DCXO), a PHY, a microcontroller (MCU), a security engine, an SRAM, and an eFlash memory. A triple-supply configuration and low-voltage circuit design enable the SoC to be applied for a wide range of battery-powered systems energy-efficiently and to extend battery lifetime. The TRX employs a low insertion-loss on-die TRX switch with impedance matching circuits, a pseudodifferential current-mode class-D PA with HD2 calibration, a low-IF RX architecture with fast AGC algorithm and complex CT-<inline-formula> <tex-math notation="LaTeX">$\Delta \Sigma $ </tex-math></inline-formula> ADCs, and a low-power all-digital phase-locked loop (ADPLL) with fast settling injection LDOs and an LMS-based two-point direct frequency modulation structure. The TRX implemented in a 28-nm CMOS process achieves an output power of +10 dBm with a calibrated HD2 of −63 dBc while consuming 45 mW and sensitivities of −98 dBm in 2-Mb/s BLE and −102 dBm in 256-kb/s IEEE802.15. 4 at <inline-formula> <tex-math notation="LaTeX">${10}^{-3}$ </tex-math></inline-formula> BER while consuming 6 mW.
Stimulation of PGE2 receptors EP2 and EP4 protects cultured neurons against oxidative stress and cell death following β‐amyloid exposure

Alzheimer's disease (AD) is associated with gliosis, neuroinflammation and higher levels of prostaglandins. Conflicting roles for cyclooxygenases and prostaglandins in the etiopathology of AD have been reported. We hypothesized that PGE2 signaling through EP2 and EP4 G‐protein‐coupled receptors could protect against amyloid β‐peptide (Aβ) neurotoxicity by increasing the cAMP signaling cascade. Using primary neuronal cultures, we investigated the presence of EP receptors (EP1–4) and the action of PGE2 and EP receptor agonists on neuronal susceptibility to Aβ1−42 toxicity. Low concentrations (1 µm) of PGE2, butaprost (EP2 agonist), and 1‐hydroxy‐PGE1 (EP4/EP3 agonist) were neuroprotective against Aβ1−42 toxicity, while sulprostone (EP3/EP1 agonist) at similar doses had no detectable effects. EP2 and EP4 receptor‐mediated neuroprotection would involve changes in cAMP levels, as both EP2 and EP4 agonists increased intracellular cAMP concentration by approximately doubling basal levels, and both exhibited neuroprotective actions against Aβ‐induced toxicity. The protein kinase A (PKA) inhibitor RpcAMPS significantly attenuated the neuroprotection by butaprost, but not that by 1‐hydroxy‐PGE1, implying differences between EP2 and EP4 receptor protective mechanisms. Additionally, the increase in reactive oxygen species generated following exposure to Aβ was reduced by stimulation of both EP2 and EP4 receptors. Together, these results indicate that PGE2 can protect neurons against Aβ toxicity by acting on given receptors and stimulating a cascade of intracellular events, including the cAMP–PKA pathway. We propose that development and testing of specific PGE2 receptor agonists downstream of cyclooxygenase could lead to therapeutic applications.
An extendable single‐switch n‐cell boost converter with high voltage gain and low components stress for renewable energy

Boost converters have been widely employed in industrial applications, and cascading boost converters is a mature technique to realize ultrahigh voltage gains. However, the cascade structure inevitably increases the voltage stress of buffer capacitors, resulting in high costs and low energy efficiency. Targeting this issue, in this study, we propose a novel extendable single‐switch n‐cell boost converter (ESSnB), which utilizes the same number of components as the conventional positive output boost converter, but has lower buffer voltage stresses. Simulation and experimentation are conducted in this study, which verify the effectiveness and superiority of the proposed ESSnB over conventional boost converters.
Analisis Minat Muzakki Membayar Zakat di Badan Amil Zakat Nasional (Baznas) Kota Semarang

The purpose of this study was to analyze the interest of muzakki paying zakat in the Semarang baznas. The research method used is qualitative quantitative by means of distributing questionnaires. The sample used was 50 respondents. The results of this study resulted that from the independent variables (service quality, religiosity and accountability) affecting the interest of muzakki to pay zakat in Baznas Semarang only 69% of service quality, while for religiosity and accountability there was no partial effect on the interest of muzakki paying zakat in the baznas Semarang city. For the determination value of 41% which means that the independent variable variation model is only able to provide the information needed to predict the interest in paying zakat in the city of Semarang baznas by 41%. Keywords :Accountability, Baznas, Interest of Muzakki Paying Zakat, Religiosity, Service Quality
Mathematical models of the photosynthetic response of tree stands to rising CO2 concentrations and temperatures

Two published models of canopy photosynthesis, MAESTRO and BIOMASS, are simulated to examine the response of tree stands to increasing ambient concentrations of carbon dioxide (Ca) and temperatures. The models employ the same equations to described leaf gas exchange, but differ considerably in the level of detail employed to represent canopy structure and radiation environment. Daily rates of canopy photosynthesis simulated by the two models agree to within 10% across a range of CO2 concentrations and temperatures. A doubling of Ca leads to modest increases of simulated daily canopy photosynthesis at low temperatures (10% increase at 10°C), but larger increases at higher temperatures (60% increase at 30°C). The temperature and CO2 dependencies of canopy photosynthesis are interpreted in terms of simulated contributions by quantum-saturated and non-saturated foliage. Simulations are presented for periods ranging from a diurnal cycle to several years. Annual canopy photosynthesis simulated by BIOMASS for trees experiencing no water stress is linearly related to simulated annual absorbed photosynthetically active radiation, with light utilization coefficients for carbon of ɛ= 1.66 and 2.07g MJ−1 derived for Ca of 350 and 700 μmol mol−1, respectively.
The electric pulses induced multi-resistance states in the hysteresis temperature range of 1T-TaS2 and 1T-TaS1.6Se0.4

The electric pulse-induced responses of 1T-TaS2 and 1T-TaS1.6Se0. 4 crystals in the commensurate charge-density-wave (CCDW) phase in the hysteresis temperature range have been investigated. We observed that abrupt multiple steps of the resistance are excited by electric pulses at a fixed temperature forming multi metastable like states. We propose that the response of the system corresponds to the rearrangements of the textures of CCDW domains and the multi-resistance states or the nonvolatile resistance properties excited simply by electric pulses have profound significance for the exploration of solid-state devices.
A Wideband Water Patch Antenna With Polarization Diversity

In this letter, a wideband water patch antenna with polarization diversity is proposed. Simultaneously, different polarization states are realized by changing the operation modes between TM11 and TM02 modes of a circular water patch and switching the feeding ports. To obtain an overlapped frequency band between these two modes, a size-changeable water patch is used. An adjustable plexiglass container is used to contain water and change the size of the water patch, while a disk-loaded probe and two pairs of L-probes are applied as the switchable feeding ports and also support wide bands. A fully functional prototype was fabricated and tested to verify the proposed design. The measured results show that all three polarization states can work well with a high isolation level. The overlapped −10 dB impedance bandwidth of three polarizations is 23.40% (2.34 GHz∼2.95 GHz). With the advantages of multipolarization states, ease of fabrication, and high optical transparency, the proposed antenna is suitable for various applications, such as indoor communications.
Inhibition of Staphylococcus aureus by Phenolic Phytochemicals of Selected Clonal Herbs Species of Lamiaceae Family and Likely Mode of Action through Proline Oxidation

Staphylococcus aureus, a Gram-positive organism, is responsible for numerous infections ranging in severity from skin and soft tissue infections to endocarditis and septic arthritis. Further, Staphylococcal food poisoning (SFP) caused by enterotoxigenic staphylococci is one of the main food-borne diseases. In this study, several single-seed origin clonal lines of herbs from Lamiaceae family were screened for antimicrobial applications against S. aureus. These clonal lines have consistent total phenolic content, phenolic profile and antioxidant activity as opposed to heterogenous phenolic profiles of typical herbal extracts. The clonal extracts of specific herb species were evaluated for anti- S. aureus activity. Water extracts of clonal lemon balm had the highest anti- S. aureus activity followed by clonal extracts of rosemary RoLA, sage, oregano, rosemary Ro-6, rosemary RoK-2 and chocolate mint. The anti- S. aureus activity of the water extracts correlated with gallic acid and caffeic acid content, which in pure form showed high anti- S. aureus activity. Based on the rationale that gallic acid and caffeic acid were likely proline analogs affecting proline oxidation, the countering effect of proline to overcome their anti- S. aureus activity was evaluated. Results indicated proline can overcome the inhibitory effects of gallic acid and caffeic acid. These results point to the likely role of phenolic oxidation via proline dehydrogenase, which could be an important target for inhibition by phenolic phytochemicals behaving as proline analog mimics. This mode of regulation by phenolics at the bacterial proline dehydrogenase in the plasma membrane may be an important antimicrobial defense in plants and has consequences for disruption of critical energy metabolism of invading bacterial pathogen. This rationale could be used to design new antimicrobial strategies against S. aureus and other relevant bacterial pathogens.
Structural Assessment and EDS Analysis of Uruguayan Wood Impregnated With Zinc Borate (ZnB)

Ammoniacal solution of zinc borate (ZnB) can present fire retardant and protection against microorganisms properties once it is applied to wood [1]. Recent studies have evaluated the behavior against fire of Eucalyptus grandis samples grown at the north region of Uruguay, showing a lower burning rate when it is impregnated with ZnB [2]. On top of that, the morphology of the surfaces exposed to flames present high degree of deformed fibers when the sample was not treated in the solution. Presence of ZnB is found on the surface of the treated and then burned samples [2].
Social Vulnerability, Gender and Disasters. The Case of Haiti in 2010

The study of vulnerability constitutes a central axis in research work on sustainability. Social vulnerability (SV) analyzes differences in human capacity to prepare, respond and recover from the impact of a natural hazard. Although disasters threaten all the people who suffer from them, they do not affect all members of society in the same way. Social and economic inequalities make certain groups more vulnerable. Factors such as age, sex, social class and ethnic identity increase vulnerability to a natural disaster. Ten years after the earthquake in Haiti in 2010, this work deepens the relationship between natural disasters, SV and gender, exploring the unequal distribution of the SV in the face of a seismic risk. The source of statistical information has been obtained from the Demographic and Health Survey (DHS), developed by the United States Agency for International Development (USAID). Multicriteria decision techniques (TOPSIS) and the differences in differences (DID) technique are used to analyze variations in gender inequality in SV as a result of the catastrophic event. The results obtained reinforce the idea of the negative impact of the disaster on the SV. Additionally, an intensification of the negative effects is observed when the household is headed by a woman, increasing the gap in SV between households headed by women and the rest of the households. The conclusions obtained show additional evidence of the negative effects caused by natural disasters on women, and important implications for disaster risk management are derived that should not be ignored.
Onset of substance use among early adolescents in Sweden

ABSTRACT Problem: Early onset, prevalence, and predictors of substance use – tobacco, alcohol-drinking, alcohol-drunkenness, and drugs – were studied in 13 and 14-year-old boys and girls in Sweden. Methods: Self-reported data in four communities were used (n = 1,716). A large set of psychological and social factors were tried as predictors of early onset use (n = 1,459). Results: There were few gender differences and low prevalence. Primary predictor for early onset in tobacco use was availability; perceived parental approval for alcohol use, and delinquent behaviors for alcohol-drunkenness and drug use. Conclusions: Individual behavioral factors and parental norms seem to be most important in this age.
Real-Time Locomotion Mode Recognition and Assistive Torque Control for Unilateral Knee Exoskeleton on Different Terrains

Stroke may lead to considerable physical impairment and functional disability, which affects walking ability. As a potential way to assist gaits, lower limb exoskeletons have been developed. To supply appropriate assistive torque, real-time accurate recognition of current gait mode is important. In this article, a hierarchical control system was proposed to recognize locomotion modes in real time for a unilateral knee exoskeleton on different terrains with specific assistive control strategies. Support vector machine classifier was used to recognize the locomotion mode based on two inertia measurement units. The corresponding assistive control strategy was designed according to the recognition result. Real-time recognition experiments under assistive torque control were conducted on five able-bodied subjects and one stroke patient, respectively. For the able-bodied subjects: first, no significance was found on the total recognition accuracies whichever the leading leg was for the five subjects (p = 0.057), which indicated the proposed method in this article was suitable whichever the leading leg was as far as the overall classification accuracy was concerned. Second, transitions occurred in swing phase when the leading leg was the paretic leg and transitions occurred in stance phase when the leading leg was the sound leg. No significance was found on mean delay time for the five subjects (p = 0.785) whichever the leading leg was, which indicated that the proposed method in this article was suitable for these two leading legs as far as the mean delay time were concerned. Third, the method of generating the assistance based on the previous gait cycle time was demonstrated to be reasonable and the tracking performance of the torque could meet the requirement. For the stroke patient, similar experimental results were obtained.
Wideband dq-Frame Impedance Modeling of Load-Side Virtual Synchronous Machine and Its Stability Analysis in Comparison With Conventional PWM Rectifier in Weak Grid

The load-side virtual synchronous machine (LVSM) enables the load to actively participate in the grid regulation, but it might still induce oscillations in a weak grid. Considering the dc-link voltage controller, power loops, ac voltage and current loops, the control delay, and sampling filters, the wideband <italic>dq</italic>-frame impedance model of the LVSM is first established, and it is found that <inline-formula> <tex-math notation="LaTeX">$Z_{dd}$ </tex-math></inline-formula> exhibits negative resistor impedance within 10 Hz. In addition, the <italic>dq</italic>-frame impedance of the LVSM is approximately inductive above 10 Hz. Then, using the <italic>dq</italic>-frame impedance-based approach, the comparative study shows that the smaller the proportional gain and integral gain of the dc-link voltage controller are, the more stable the conventional voltage source rectifier (VSR) is in a weak grid. However, the larger the proportional gain is, the smaller the integral gain is, the more stable the LVSM is in a weak grid. Furthermore, the voltage feedforward decreases the stability margin of the VSR in a weak grid, while the virtual moment of inertia <inline-formula> <tex-math notation="LaTeX">$J$ </tex-math></inline-formula> and the damping gain <inline-formula> <tex-math notation="LaTeX">$D_{p}$ </tex-math></inline-formula> affect the stability of the LVSM, and the smaller <inline-formula> <tex-math notation="LaTeX">$J$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$D_{p}$ </tex-math></inline-formula> are, the more stable the LVSM is in weak grid. Finally, simulations and experimental results verify the impedance model and the stability analysis.
Tracking US Social Change Over a Half-Century: The General Social Survey at Fifty

In the five decades since its inception in 1971, the General Social Survey (GSS) project has prospectively recorded the current characteristics, backgrounds, behaviors, and attitudes of representative cross sections of American adults covering more than two generations and more than a century of birth cohorts. A foundational resource for contemporary social science, the data it produces and disseminates enable social scientists to develop broad and deep understandings into the changing fabric of US society, and aid legions of instructors and students in teaching and learning. It facilitates internationally comparative survey research and places the United States in the context of other societies through the International Social Survey Program, which it cofounded. This article first recounts the GSS's origins, design, and development. It then surveys contributions based on GSS data to studies of stratification and inequality, religion, sociopolitical trends, intergroup relations, social capital and social networks, health and well-being, culture, and methodology.