Miracle-dz/UniFAR-FTUs huggingface dataset:
Survey of 99.9% Class Efficiency DC‐AC Power Conversion and Technical Issues

This study provides a survey overview of the literatures with the goal of maximizing the efficiency of DC‐AC power conversion from an engineering science perspective. With the advent of wide band gap power semiconductors, the published literature on realizing high efficiency DC‐AC converters has increased. Therefore, a literature survey of high‐efficiency DC‐AC inverters was first conducted. We demonstrated the importance of the measurement accuracy in measuring high efficiency losses, and then presented the literature on new measurement methods, as well as examples of analysis of the breakdown of these losses. Furthermore, we reviewed the literature on high‐efficiency inverters. We presented measurement data (99.83%) on an inverter with a high efficiency energy conversion system circuit topology using Silicon Carbide (SiC) and Gallium Nitride (GaN) devices to demonstrate how the procedure was used to achieve loss minimization. We summarized the challenges hindering high efficiency. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.
Efeito da adição de própolis em lombo suíno temperado

A preocupação da população com a qualidade os alimentos consumidos vêm aumentando de forma crescente nos últimos anos e a busca por alimentos mais saudáveis e com menos aditivos faz parte desta tendência. Dessa forma, o objetivo deste trabalho foi avaliar a atividade antimicrobiana da própolis na conservação, aceitabilidade e composição nutricional de um lombo suíno temperado. Foram produzidas três formulações: formulação controle (FC) sem adição de própolis, formulação 1 (F1) com adição de 0,6% de própolis e formulação 2 (F2) com adição de 1,2% de própolis, as quais foram submetidas às análises físico-químicas, microbiológicas e sensoriais. A análise físico-química revelou que a própolis não interferiu nas características nutricionais do produto. Para análise microbiológica observou-se que a própolis se mostrou um bom conservante nas características do lombo suíno, exceto para mesófilos aeróbios totais. Considerando as notas obtidas para todos os atributos, a incorporação de própolis o lombo suíno não prejudicou a aceitabilidade produto. Diante dos resultados apresentados pode-se concluir que própolis apresenta potencial para ser utilizado como um conservante natural em produtos cárneos.
Robust Missile Autopilots With Finite‐Time Convergence

This paper presents a new longitudinal autopilot to address the finite‐time tracking problem for uncertain agile missiles. The proposed autopilot is essentially a composite control scheme, which is obtained through the finite‐time control methodology and the nonlinear disturbance observer (NDOB) approach. The key idea in this scheme is that the NDOB is adopted to estimate the aerodynamic uncertainties and external disturbances in an integrated manner. With the aid of the finite‐time bounded function and the Lyapunov function method, the finite‐time stability of the closed‐loop system is established, which shows that the angle‐of‐attack response will converge to the external command signal in finite time. Numerical simulation results are presented to demonstrate the superiority of the proposed scheme.
Two-Phase Flow Modeling for Bed Erosion by a Plane Jet Impingement

This paper presents experimental and numerical studies on the erosion of a horizontal granular bed by a two-dimensional plane vertical impinging jet to predict the eroded craters’ size scaling (depth and width). The simulations help understand the microscopic processes that govern erosion in this complex flow. A modified jet-bed distance, accounting for the plane jet virtual origin, is successfully used to obtain a unique relationship between the crater size and a local Shields parameter. This work develops a two-phase flow numerical model to reproduce the experimental results. The numerical techniques are based on a finite volume formulation to approximate spatial derivatives, a projection technique to calculate the pressure and velocity for each phase, and a staggered grid to avoid spurious oscillations. Different options for the sediment’s solid-to-liquid transition during erosion are proposed, tested, and discussed. One model is based on unified equations of continuum mechanics, others on modified closure equations for viscosity or momentum transfer. A good agreement between the numerical solutions and the experimental measurements is obtained.
Effect of Taraxacum officinale L. ethanol extract against kidney injuries induced by paracetamol in rats

Background/Aim: The biochemical effects of dandelion (D) ethanol extract on blood and renal tissue in rats induced by paracetamol (PRC) were examined in this study. Methods: In this study was utilized 36 Sprague Dawley male rats, aged 5 months. Rats were divided 6 groups of 6 rats each, randomly. Control group (C), D200 group, D250 group, PRC group, PRC+D200 group, PRC+D250 group, was given orally per os (p.o) in a single dosage (2 g/kg/b.w.) and dandelion extract (200-250 mg/kg) was given intraperitoneally (i.p) for 8 days. Results PRC raised plasma levels of urea, uric acid, and creatinine, as well as malondialdehyde, nitrate, and nitrite in kidney tissue. Furthermore, antioxidant levels/activities in renal tissue were reduced. Dandelion reduced plasma levels of urea, uric acid, and creatinine, as well as lipid peroxidation, nitrat, and nitrit in kidney tissue, while simultaneously increasing antioxidant activities. Conclusion: In this study was investigated that dandelion ethanol extract can be used excellent protection against PRC damage.
Research and implementation of NR LDPC decoding acceleration based on software defined radio

Aiming at the problems of low efficiency, large delay and low throughput in LDPC decoding of OAI projects in current software defined radio platforms, this paper proposes a multi segment parallel decoding acceleration scheme for LDPC based on thread pool, and compares the LDPC decoding time and throughput between the architecture of this paper and the original OAI architecture under different LDPC segment numbers. Compared with the original OAI architecture, the architecture in this paper reduces the time required for LDPC decoding by 90.33% and increases the throughput by 145.71%, it improves the performance and practicability of the OAI project.
Structured Estimation In High-Dimensions

High-dimensional statistical inference deals with models in which the number of parameters p is comparable to or larger than the sample size n. Since it is usually impossible to obtain consistent procedures unless p/n → 0, a line of recent work has studied models with various types of low-dimensional structure, including sparse vectors, sparse and structured matrices, low-rank matrices, and combinations thereof. Such structure arises in problems found in compressed sensing, sparse graphical model estimation, and matrix completion. In such settings, a general approach to estimation is to solve a regularized optimization problem, which combines a loss function measuring how well the model fits the data with some regularization function that encourages the assumed structure. We will present a unified framework for establishing consistency and convergence rates for such regularized M-estimators under high-dimensional scaling. We will then show how this framework can be utilized to re-derive a few existing results and also to obtain a number of new results on consistency and convergence rates, in both e2-error and related norms. An equally important consideration is the computational efficiency in performing inference in the high-dimensional setting. This high-dimensional structure precludes the usual global assumptions—namely, strong convexity and smoothness conditions—that underlie much of classical optimization analysis. We will discuss ties between the statistical inference problem itself and efficient computational methods for performing the estimation. In particular, we will show that the same underlying statistical structure can be exploited to prove global geometric convergence of the gradient descent procedure up to statistical accuracy. This analysis reveals interesting connections between statistical precision and computational efficiency in high-dimensional estimation.
Transposon-Directed Insertion-Site Sequencing Reveals Glycolysis Gene gpmA as Part of the H2O2 Defense Mechanisms in Escherichia coli

Hydrogen peroxide (H2O2) is a common effector of defense mechanisms against pathogenic infections. However, bacterial factors involved in H2O2 tolerance remain unclear. Here we used transposon-directed insertion-site sequencing (TraDIS), a technique allowing the screening of the whole genome, to identify genes implicated in H2O2 tolerance in Escherichia coli. Our TraDIS analysis identified 10 mutants with fitness defect upon H2O2 exposure, among which previously H2O2-associated genes (oxyR, dps, dksA, rpoS, hfq and polA) and other genes with no known association with H2O2 tolerance in E. coli (corA, rbsR, nhaA and gpmA). This is the first description of the impact of gpmA, a gene involved in glycolysis, on the susceptibility of E. coli to H2O2. Indeed, confirmatory experiments showed that the deletion of gpmA led to a specific hypersensitivity to H2O2 comparable to the deletion of the major H2O2 scavenger gene katG. This hypersensitivity was not due to an alteration of catalase function and was independent of the carbon source or the presence of oxygen. Transcription of gpmA was upregulated under H2O2 exposure, highlighting its role under oxidative stress. In summary, our TraDIS approach identified gpmA as a member of the oxidative stress defense mechanism in E. coli.
The Relation between Interstellar Turbulence and Star Formation

(ABBREVIATED) Understanding the formation of stars in galaxies is central to much of modern astrophysics. In this review the relation between interstellar turbulence and star formation is discussed. Supersonic turbulence can provide support against gravitational collapse on global scales, while at the same time it produces localized density enhancements that allow for collapse on small scales. The efficiency and timescale of stellar birth in Galactic gas clouds strongly depend on the properties of the interstellar turbulent velocity field, with slow, inefficient, isolated star formation being a hallmark of turbulent support, and fast, efficient, clustered star formation occurring in its absence. Star formation on scales of galaxies as a whole is expected to be controlled by the balance between gravity andturbulence, just like star formation on scales of individual interstellar gas clouds, but may be modulated by additional effects like cooling and differential rotation. The dominant mechanism for driving interstellar turbulence in star-forming regions of galactic disks appears to be supernovae explosions. In the outer disk of our Milky Way or in low-surface brightness galaxies the coupling of rotation to the gas through magnetic fields or gravity may become important.
Board Diversity and ESG Performance: Evidence from the Italian Banking Sector

This study examines the influence of the diversity of the board of directors (BoD) and the environmental, social and governance (ESG) performance of 105 Italian banks during the period 2017–2021. Our analysis investigates board diversity in terms of board attributes (board size, board age, board gender diversity, board independence and CSR (corporate social responsibility/sustainability committee) and measures ESG dimensions by using the ESG score provided by the Refinitiv database hosted by Thomson Reuters. The main empirical results reveal that the board size, board independence and the presence of a CSR/sustainability committee positively influence a bank’s ESG performance while no significant relationship between board average age and ESG performance is found. Additionally, the relationship between gender-balanced boards and ESG performance is positive but the impact of female directors on ESG performance is non-linear when a critical mass of women is reached. This paper comprises an in-depth inspection of the corporate governance (CG) in banks, since in Italy there is limited literature concerning diversity in BoDs despite the relevance of the topic. This study is the first that examines the impact of specific CG characteristics (board diversity) on ESG performance in the Italian banking sector, to date. The investigation is highly relevant to managers and investors considering ESG issues in their decision-making process. In addition, findings have implications for both regulators and practitioners, suggesting that policymakers and managers should pay more attention to corporate governance aspects to enhance ESG performance.
Sprouting enhances phytonutrients and antioxidants in onion seeds

Consumption of onion seed sprouts is getting popular for its flavour and texture. However, there is limited information on changes in the phytonutrients during sprouting of onion seed. The objective of this study was to determine the temporal variations in the phytonutrient content during the sprouting of onion seeds and to determine the appropriate time of sprouting for better nutrition. Seeds of three onion varieties (Bhima Red, Bhima Raj and Bhima Kiran) were germinated for different periods (5, 10 and 15 days). Changes in phytonutrients and antioxidant potential were analyzed. The highest flavonoids, thiosulfinates, and DPPH activity were observed in 10 days old sprouts, which were 38.78%, 160.71%, and 97.45% higher than seeds. Pyruvic acid, total phenols and ABTS activity was maximum in 15 days old sprouts, which was 682.69%, 189.03%, and 79.38% higher than seeds respectively. The sugars increased initially but declined with sprout age and the lowest levels were recorded in 15 days old sprouts. Sprouting enhanced the health-promoting phytonutrients and antioxidant activity of onion seeds and sprouts harvested at 10 and 15 days had a higher quantity of health-promoting phytonutrients.
Complex Variables

PREFACE BASIC IDEAS Complex Arithmetic Algebraic and Geometric Properties The Exponential and Applications HOLOMORPHIC AND HARMONIC FUNCTIONS Holomorphic Functions Holomorphic and Harmonic Functions Real and Complex Line Integrals Complex Differentiability The Logarithm THE CAUCHY THEORY The Cauchy Integral Theorem Variants of the Cauchy Formula The Limitations of the Cauchy Formula APPLICATIONS OF THE CAUCHY THEORY The Derivatives of a Holomorphic Function The Zeros of a Holomorphic Function ISOLATED SINGULARITIES Behavior near an Isolated Singularity Expansion around Singular Points Examples of Laurent Expansions The Calculus of Residues Applications to the Calculation of Integrals Meromorphic Functions THE ARGUMENT PRINCIPLE Counting Zeros and Poles Local Geometry of Functions Further Results on Zeros The Maximum Principle The Schwarz Lemma THE GEOMETRIC THEORY The Idea of a Conformal Mapping Mappings of the Disc Linear Fractional Transformations The Riemann Mapping Theorem Conformal Mappings of Annuli A Compendium of Useful Conformal Mappings APPLICATIONS OF CONFORMAL MAPPING Conformal Mapping The Dirichlet Problem Physical Examples Numerical Techniques HARMONIC FUNCTIONS Basic Properties of Harmonic Functions The Mean Value Property The Poisson Integral Formula TRANSFORM THEORY Introductory Remarks Fourier Series The Fourier Transform The Laplace Transform A Table of Laplace Transforms The z-Transform PDES AND BOUNDARY VALUE PROBLEMS Fourier Methods COMPUTER PACKAGES Introductory Remarks The Software Packages APPENDICES Solutions to Odd-Numbered Exercises Glossary of Terms List of Notation A Guide to the Literature BIBLIOGRAPHY INDEX
State authorities’ service function implementation under epidemic threats with the use of legal technologies

Research purpose of the paper is to determine current issues and prospects of state authorities’ service function implementation under epidemic threats with the use of legal technologies in pandemic and post-pandemic world conditions. Research methods: General-scientific and special-legal methods of cognition have been used. By using the dialectical method, theoretical background and current issues of state authorities’ service function implementation under epidemic threats with the use of legal technologies have been investigated and the modern challenges concerning this issue have been outlined. Formal-legal and comparative methods gave the opportunity to suggest the directions of state authorities’ service function implementation ensuring under epidemic threats with the u se of legal technologies in conditions of the global changes, digitalization and social transformations in pandemic and post-pandemic world. The paper concluded that the future communication between states and their inhabitance will include bots-public officers, the use of Blockchain for open recording and change of information, registration of state information, ownership rights, including intellectual property rights, notary acts, voting during elections and referenda in the Blockchain, smart-contracts, offline, online applications, aggregators, and modern search systems. A human of the future was represented as a posthuman-cyborg that combines his/her natural construction with technical ones. Thus, state authorities to provide their service effectively have to be morally and technically prepared to meet a new participant of their service and activity.
Simple dental implant treatment for rehabilitating posterior mandibular teeth

Dental implant became the solution to conventional dentures and bridges these days. Both single crown implants and implant-supported fixed partial dentures came as the options for restoring partially missing teeth. Fixed implant supported restorations could be screwed, cemented, or both through cemented prosthesis with palatal or lingual fastening screws. Understanding the advantages and disadvantages of each system are important. This case report will show step by step of implant placement using bone level implant fixture and screw and cement retained zirconia restoration. Transgingival healing was achieved by using healing abutment through one step surgery. Good emergence profile acquired from the use of healing abutment will give good aesthetic outcome. Digital workflow was included in this treatment to replace impression process with digital scanning of implant. The fabricaton of the restoration used in this case also using CAD/CAM technology. Zirconia ceramic has proven to have strength and good aesthetic results in dentistry. Cementation of the restoration became one of the important steps in this case report, therefore determining the appropriate cement for zirconia would affect long-term outcome of the restoration. Patient were required to maintain oral hygiene before and after the implant placement. The aim of this case report is to show simple way in restoring missing teeth in posterior region of mandible by using dental implant.
Offshore reanalysis wind speed assessment across the wind turbine rotor layer off the United States Pacific coast

Abstract. The California Pacific coast is characterized by considerable wind resource and areas of dense population, propelling interest in offshore wind energy as the United States moves toward a sustainable and decarbonized energy future. Reanalysis models continue to serve the wind energy community in a multitude of ways, and the need for validation in locations where observations have been historically limited, such as offshore environments, is strong. The U.S. Department of Energy (DOE) owns two lidar buoys that collect wind speed observations across the wind turbine rotor layer along with meteorological and oceanographic data near the surface to characterize the wind resource. Lidar buoy data collected from recent deployments off the northern California coast near Humboldt County and the central California coast near Morro Bay allow for validation of commonly used reanalysis products. In this article, wind speeds from the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2), the Climate Forecast System version 2 (CFSv2), the North American Regional Reanalysis (NARR), the European Centre for Medium-Range Weather Forecasts Reanalysis version 5 (ERA5), and the analysis system of the Rapid Refresh (RAP) are validated at heights within the wind turbine rotor layer ranging from 50 to 100 m. The validation results offer guidance on the performance and uncertainty associated with utilizing reanalyses for offshore wind resource characterization, providing the offshore wind energy community with information on the conditions that lead to reanalysis error. At both California coast locations, the reanalyses tend to underestimate the observed rotor-level wind resource. Occasions of large reanalysis error occur in conjunction with stable atmospheric conditions, wind speeds associated with peak turbine power production (> 10 m s−1), and mischaracterization of the diurnal wind speed cycle in summer months.
Therapeutic Implementation of Oncolytic Viruses for Cancer Immunotherapy: Review of Challenges and Current Clinical Trials

The development of cancer therapeutics has evolved from general targets with radiation and chemotherapy and shifted toward treatments with a more specific mechanism of action such as small molecule kinase inhibitors, monoclonal antibodies against tumor antigens, or checkpoint inhibitors. Recently, oncolytic viruses (OVs) have come to the forefront as a viable option for cancer immunotherapy, especially for “cold” tumors, which are known to inhabit an immunologically suppressive tumor microenvironment. Desired characteristics of viruses are selected through genetic attenuation of uncontrolled virulence, and some genes are replaced with ones that enhance conditional viral replication within tumor cells. Treatment with OVs must overcome various hurdles such as premature viral suppression by the host’s immune system and the dense stromal barrier. Currently, clinical studies investigate the efficacy of OVs in conjunction with various anti-cancer therapeutics, including radiotherapy, chemotherapy, immune checkpoint inhibitors, and monoclonal antibodies. Thus, future research should explore how cancer therapeutics work synergistically with certain OVs in order to create more effective combination therapies and improve patient outcomes.
A Critical Review of Chloroquine and Hydroxychloroquine as Potential Adjuvant Agents for Treating People with Cancer

Chloroquine (CQ) and hydroxychloroquine (HCQ) have been used to treat malaria and autoimmune diseases for more than 70 years; they also have immunomodulatory and anticancer effects, which are linked to autophagy and autophagy-independent mechanisms. Herein, we review the pharmacokinetics, preclinical studies and clinical trials investigating the use of CQ and HCQ as adjuvant agents in cancer therapy. We also discuss their safety profile, drug–drug and drug–disease interactions. Systematic studies are required to define the use of CQ/HCQ and/or their analogues in cancer treatment and to identify predictive biomarkers of responder subpopulations.
An internal-state-variable based viscoelastic-plastic model for polymers

In this study, a new viscoelastic-plastic constitutive model which has been formulated by utilizing the formalism of stress-like internal state variables is introduced. The developed constitutive equation allows for a good description of the inelastic material response of polymeric materials over a wide range of strain rates. An algorithm for numerical integration of the model equations has been derived. The FE implementation of the constitutive equation is widely discussed and the results of solving several exemplary problems are presented.