Miracle-dz/UniFAR-FTUs huggingface dataset:
Fault Location of Distribution Network Containing Distributed Generations

It makes the topology of distribution network more complex to contain a lot of distribution generations (DGs) in it. For this reason, a fault location approach suitable to the distribution network containing DGs is proposed. Firstly, according to the results of power flow calculation, a database of voltage sag is established; then the power quality information is acquired by power quality monitors and correlation analysis on collected nodal voltage data and voltage sag data of the established database is performed; and then the node with the matching extent value most close to 1 is determined as the fault point. Simulation results of IEEE 33-bus system show that the proposed approach is effective and using the proposed approach the misjudgment can be prevented. Finally, the results of the analysis on the influences of different load models, transition resistances, connection and disconnection of DGs on the proposed approach show that the proposed approach possesses better robustness and reliability.
Analysis of Stand-up Paddle Boarding: A systematic review (Análisis del Stand Up Paddle. Una revisión sistemática)

Stand-up paddle boarding (SUP) is a relatively new physical activity, which involves paddling with a single- blade paddle while standing on a surf-like board. Although its practice has increased in recent years, there has not been much research into this sport. The aim of this review is to analyse the research carried out so far in SUP, for which purpose the following databases have been consulted: PUBMED/MEDLINE, Web of Science (WOS), Cochrane library, Google scholar and Scopus, using the following search phrase base (Stand up paddle [Title/Abstract]) OR (Stand-up paddle [Title/Abstract]). 182 articles in total were obtained and after applying the PRISMA method, 36 articles were included, divided into 5 groups: physiology, biomechanics, injury, education and others. Existing literature shows the great potential of this activity in improving health-related parameters such as cardiovascular system or balance, as well as describing a balanced mesomorph somatotype and a good cardiovascular level in elite paddlers. On the other hand, a higher injury rate has been recorded in shoulders, lower back and elbows in SUP race participants and in the lower body in the case of SUP surfing, with strength training being the training variable that is most closely linked to injury prevention. This review demonstrates that SUP is an activity with great potential for application in education, as well as health improvement. Resumen: El Stand Up Paddle (SUP) es una actividad física relativamente nueva, que implica remar con un remo de una sola hoja mientras se está de pie sobre una tabla similar a la del surf. Aunque su práctica ha aumentado en los últimos años, no hay mucha investigación sobre este deporte. El objetivo de esta revisión es analizar la investigación realizada hasta el momento. Se han consultado las siguientes bases de datos: PUBMED/MEDLINE, Web of Science (WOS), biblioteca Cochrane, Google Scholar y Scopus, utilizando la siguiente base de frases de búsqueda (Stand up paddle [Título / Resumen]) O (Stand-up paddle [Título /Resumen]). Se obtuvieron un total de 182 artículos y tras aplicar el método PRISMA se incluyeron un total de 36 artículos, divididos en 5 grupos: fisiología, biomecánica, lesión, educación y otros. La literatura existente muestra el gran potencial de esta actividad para la mejora de parámetros relacionados con la salud, como el sistema cardiovascular o el equilibrio, además de describir un somatotipo mesomorfo equilibrado y un buen nivel cardiovascular en palistas de élite. También se ha registrado una mayor tasa de lesiones en hombros, espalda baja y codos para los participantes de la carrera de SUP y en la parte inferior del cuerpo para el SUP surf, siendo el entrenamiento de fuerza la variable de entrenamiento con mayor relación con la prevención de lesiones. Esta revisión demuestra que el SUP es una actividad con gran potencial de aplicación en la educación, así como para la mejora de la salud.
Cohort‐based analysis of maternal age at menarche in relation to young adult offspring anthropometric and metabolic parameters

Age of menarche is a determinant factor of cardiometabolic risk, adiposity and stature at adulthood. However, little is known about the transgenerational effects of age of menarche, especially beyond childhood of any offspring, and the studies remain limited to anthropometric outcomes in children at birth or before adolescence. In the present study, we aim to investigate the relationship of maternal age at menarche (MAM) with anthropometric and metabolic parameters in the young adult offspring (aged 15–35 years) in a Persian population.
A quartz crystal microbalance-type odor sensor using PVC-blended lipid membrane

A new odor sensor was developed based on the quartz crystal microbalance method. Newly developed PVC-blended lipid membrane was used as odorant-adsorptive membrane. It was deposited on the surface of a quartz crystal resonator, with which the mass increase induced by the adsorption of odorants onto the membrane was measured as the resonant frequency decrease. Sensor evaluation was performed and it was shown that the sensor had a sensitivity of 1 ppm and a response speed of less than 5 sec for amylacetate gas, which are very close to those of human beings and much better than conventional oxide semiconductor-type sensors or quartz crystal microbalance-type ones with other membranes. The odor selectivity of the sensor was also proved to be similar to that of human beings. Finally, identification of 6 odorants was performed by comparing the output patterns of 5 sensors with different membrane lipid compositions. <<ETX>>
Does extracellular DNA mask microbial responses to a pulse disturbance?

A major goal in microbial ecology is to predict how microbial communities will respond to global change. However, DNA-based sequencing that is intended to characterize live microbial communities includes extracellular DNA (exDNA) from non-viable cells. This could obscure relevant microbial responses, particularly to pulse disturbances which kill bacteria and have disproportionate effects on ecosystems. Here, we characterize bacterial communities before and after a drying-rewetting pulse disturbance, using an improved method for exDNA exclusion. We find that exDNA removal is important for detecting subtle yet significant changes in microbial abundance, diversity, and community composition across the disturbance. However, inclusion of exDNA did not obscure results to a large extent, only sometimes altering statistical significance but rarely changing the direction of the response or general conclusions about bacterial disturbance dynamics. Although there may be instances where exDNA removal is essential for accurate representation of microbial communities, our study suggests these scenarios will be difficult to predict a priori. Overall, we found no evidence that certain time points across the distrubance were more affected by exDNA inclusion, nor did the size or composition of exDNA pools accurately predict when exDNA would alter significance levels. However, exDNA dynamics did vary strongly across the two soil types tested.
Investigation of nonlinear interactions in ocean swell waves using the reduced bispectrum

In this paper, a two-dimensional (2-D) reduced bicoherence function which can be calculated via the reduced bispectrum is introduced. The statistical and computational aspects of the 2-D reduced bicoherence function are compared with those of the conventional bicoherence function. It is shown that the proposed technique is less noise-sensitive than the conventional bicoherence estimate. The use of the 2-D reduced bicoherence function to investigate nonlinear interactions in ocean swell waves is also demonstrated. As the 2-D reduced bicoherence can be efficiently calculated, it is proposed to use this novel technique in oceanographic field experiments that require real-time data processing and interpretation.
Development of an Optimized Algorithm for Bidirectional Equalization in Lithium-Ion Batteries

Many equalization circuits have been proposed to improve pack performance and reduce imbalance. Although bidirectional equalization topologies are promising in these methods, pre-equalization global equalization strategy is lacking. This study proposes a novel state-of-charge (SoC) equalization algorithm for bidirectional equalizer based on particle swarm optimization (PSO), which is employed to find optimal equalization time and steps. The working principle of bidirectional equalization topologies is analyzed, and the reason behind the application of SoC as a balancing criterion is explained. To verify the performance of the proposed algorithm, a pack with 12 LiFePO4 batteries is applied in the experiment. Results show that the maximum SoC gap is within 2% after equalization, and the available pack capacity is enhanced by 13.2%. Furthermore, a comparison between previously used methods and the proposed PSO equalization algorithm is presented. Experimental tests are performed, and results show that the proposed PSO equalization algorithm requires fewer steps and is superior to traditional methods in terms of equalization time, energy loss, and balancing performance.
Development of a homopolar electrical machine for high power density high speed applications

The high speed homopolar machine (HSHM) is investigated as a conceptual high speed electrical machine in pursuit of higher power-densities within a rated power range of up to 100 kW and speeds of up to 100000 rpm. The HSHM's topology is complex and essentially a 3D task. However, a simplified dimensioning methodology is developed and implemented for the investigation. Feasible ratings typical for the HSHM are established and their limitations discussed.
Numerical Study of Parametric Roll on a Fishing Vessel

Present research activity examines numerically the occurrence of parametric roll on a fishing vessel interacting with regular head-sea waves. The adopted solver is an efficient 3-D numerical Domain-Decomposition strategy for the seakeeping of a 6-dof vessel without and with small forward speed and possibly subjected to bottom-slamming and water-on-deck events. Here, the vessel has been assumed at rest and the excitation frequency is varied in the first parametric resonance zone and occurrence and features of the instability are examined in terms of nonlinearities of the incident waves and roll natural-to-incident wave frequency ratio. The analysis is performed both fully within the potential-flow theory and examining the effect on the parametric resonance of the viscous correction to the roll damping obtained from free-decay 3D model tests on the same ship. A system of four cables, horizontal in the mean configuration, will be used experimentally to limit the horizontal vessel motions. Here the numerical solver is used to analyze the influence of cable stiffness and of cable configuration on the vessel behavior and to help the design of the physical set up. The vessel has deep draft and high mean freeboard, these aspects work against the occurrence of bottom slamming and water-on-deck events. Without forward speed, no bottom slamming phenomena were observed while limited number of water-on-deck events with small amount of shipped liquid was recorded for the highest-frequency incident waves with largest steepnesses, among those causing parametric roll.Copyright © 2013 by ASME
Rapid calculation of the Green's function in the shielded planar structures

A rapid summation method is proposed for the potential Green's function in shielded planar multilayered structures. Most terms of the Green's function series are converted into the space domain static image series and are calculated efficiently using the Ewald sum technique. Numerical results show the efficiency and accuracy of the proposed method.
Flexures for high precision robotics

High precision robots are often used for complex assembly or positioning tasks. One way to achieve high motion precision is to design mechanical systems based on flexure joints. Flexure joints (or flexures) utilize the elastic properties of matter, which brings avoidance of dry friction. Nanometer scale motions are then possible, without wear, mechanical play or particle emission. Leading to high performance systems in terms of dynamics, parallel kinematics are useful for high precision robot design. Two research projects are presented in this paper. The first one has already led to the realization of a micro electro‐discharge machine (μ‐EDM), and the second one’s goal is to generate a family of compact ultra‐high precision manipulators.
Microsurgical Techniques and Postoperative Outcomes After Total and Subtotal Nasal Reconstruction

Background Multiple microsurgical techniques for nasal reconstruction have been described in the literature. Given the gaps in the literature regarding evidence-based reviews for total and subtotal nasal reconstruction using microsurgical techniques, the purpose of this study was to provide a thorough presentation of the most popular microvascular techniques and their outcomes (functional and aesthetic) for total or subtotal nasal defects. Methods A systematic search was performed using PubMed, Google Scholar, and Cochrane Library on free flap techniques for restoration of nasectomy defects. The keywords were “nasal reconstruction,” “nose,” “nasectomy,” “rhinectomy,” and “microvascular. ” Inclusion criteria for analysis in the study were the largest clinical case series published in English within the past 15 years with more than 8 patients. Studies were analyzed for patient demographics, etiology of nasal loss, surgical approaches to reconstruction, outcomes, and complications. The current study was registered at the International Prospective Register of Systematic Reviews and conducted based on the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Results The initial search yielded 302 results. Eleven articles with a total of 232 patients met the inclusion criteria. The radial (n = 85) and ulnar forearm flaps (n = 20), auricular helical rim (n = 87), and anterolateral thigh flap (n = 30) were the most commonly reported free flaps in nasal reconstruction. The main etiologic factors were malignancy and trauma. The most common complication was partial flap necrosis. Conclusions The auricular helical and radial forearm flaps represent the most used free flaps for total and/or subtotal nasal defects with satisfactory patient outcomes.
Single-Phase Boost Rectifier Fed SRM Drive

Abstract A single-phase double boost rectifier is proposed for providing direct current (DC) supply for midpoint converter fed SRM (switched reluctance motor) drive. The proposed single-phase double boost rectifier consists of two single-phase boost converters with DC output connected in series to feed midpoint converter fed SRM drive. This system is capable of improving power quality at alternating current (AC) mains and maintains the capacitor voltages constant. The proposed single-phase double boost rectifier fed SRM drive is designed, modelled, and its performance is simulated in MATLAB/Simulink. The performance of proposed drive system is compared with a single-phase diode bridge voltage-doubler fed SRM drive to demonstrate effectiveness of proposed single-phase double boost rectifier for power quality improvements at AC mains.
Adopting new practice: Using Feedback to Develop a University-wide Moderation Process that closes the assessment loop

In higher education, assessment practices are increasingly coming under scrutiny as a scholarship of assessment is being developed across the sector. Many institutions are promoting the use of criterion-referenced assessment, particularly in conjunction with the use of standards, yet despite this widespread support, the effective implementation of such a system can be problematic. Generating criteria that are clear and valid, developing a shared understanding of criteria and standards among students and assessors and arriving at final awards are key issues being addressed by scholars of assessment. At a meta-level, implementation of a fundamentally new assessment practice within an institution requires change management that takes account of a broader range of factors beyond issues of scholarship. This paper describes the procedure of articulating a moderation process in response to concerns about the removal of the requirement to �grade on the curve�. The moderation process has three foci: the assessment design (pre-assessment focus), making judgments (point of assessment focus) and determining grading outputs (post-assessment focus). Importantly, the post-assessment focus explicitly builds in review and feed forward in relation to assessment design, thereby closing the loop of the assessment process.
Input-output harmonics of line-current-modulated high-frequency link DC to utility power converters

Two types of commutation schemes (called Type I and Type II) are proposed and analyzed for the line-connected inverter used in line-current-modulated high-frequency DC link to utility interface power conditioning systems. In the Type I scheme the high-frequency inverter is switched off well in advance of the zero crossings of line voltage, allowing the line current to go to zero and enabling the line-connected inverter to turn off. A simple lossless forced commutation circuit is used in the Type II scheme. The effects of these schemes on line-side and input DC-side current harmonics are studied in the case of single-phase systems, neglecting the effect of controller action. The performance indices are evaluated. The results obtained from prototype experimental systems are used to verify the theory presented. The analysis presented for single-phase systems is extended to three-phase systems. >
Impact of Corporate Governance on Environmental Information Disclosure: Evidence from India

A growing number of studies have been conducted to know the influences of corporate governance on the disclosure behaviors of companies. This study aims to empirically investigate the effects of corporate governance mechanisms namely, Board Size (BS), Board Independence (BI), CEO Duality, Company Size, and Return on Asset (ROA) on environmental information disclosure (EID). Environmental information has been analyzed through content analysis and measured through dummy variables. The data of 53 most polluted companies, listed in the National Stock Exchange (NSE) of India has been studied for 5 years period (2015-16 to 2019-20) and the Feasible Generalized Least Square (FGLS) regression technique of panel data has been employed to estimate the overall result. The findings of the study indicate that Board Size (BS), CEO Duality (CD), and ROA have a significant impact on the disclosure of environmental information, while Board Independence (BI) and Company Size (CS) do not influence EID. The study suggests that the disclosure of environmental information is necessary especially for environmentally sensitive companies to be disclosed in their periodic reports on a mandatory basis.
Bayesian Estimation for Tracking of Spiraling Reentry Vehicles

A physics-based dynamics model of a noncooperative axisymmetric spiraling endoatmospheric reentry vehicle is presented for use in one of several model-based Bayesian state estimation frameworks, namely the extended Kalman filter and the particle filter. An analysis of the trajectory characteristics using elements from differential geometry lead to a relationship of the state of the vehicle to the spiraling motion. Simulated Earth entry trajectories illustrate the spiraling behavior that can be described by the model. The extended Kalman filter and the particle filter frameworks are employed to estimate the states and spiraling characteristics in the presence of model and environmental uncertainties and measurement errors. We assume ground based radar(s) provide range, range rate, azimuth and elevation measurements. Error budgets and sensitivity plots are provided depicted the sources of uncertainty with greatest impact on the ability to estimate the position and spiraling frequency. It is shown that the extended Kalman filter and the particle filter have comparable state estimation performance and that the largest contributor to state estimation errors stem from uncertainty in the lift angle and rate of the spiraling vehicle.
Moment characterization of phase noise in coherent optical systems

The statistical characterization of the phase noise introduced by a semiconductor laser in a coherent optical transmission system is a key problem in the system performance evaluation. The authors consider the moment characterization, of the complex random process. Starting from the implicit representation of the probability density function through the Fokker-Planck equation, the authors obtain closed form analytical expressions for the moments of the filtered phase noise both in stationary and nonstationary conditions. Then the use of the moments for the computation of probability densities through orthogonal polynomial series expansion and maximum entropy approach is considered in application examples. >
Comparative evaluation of shear bond strength of composite to dentin in presence of different dantal liners: An in-vitro study

Background: The aim of the current study was to evaluate and compare the influence of Dycal, Lime-lite, Theracal LC, Biodentine, Resin-modified glass ionomer cement (RMGIC), and Activa Bioactive as the pulp capping material on the shear bond strength of resin composite to dentin.Methods: A total of 70 extracted caries-free molars were randomly assigned to seven groups. Six test groups were covered with various protective liners: Dycal (GD), Theracal LC (GT), lime-lite (GL), Activa Bioactive (GA), Biodentine (GB), RMGIC (GR). The control group (GC)received no liner pretreatment. Each sample was bonded to resin composite using the total-etch tetric N bond adhesive. The samples were then tested for shear bond strength using the universal testing machine at a cross-head speed of 1 mm/min until bond failure occurred. The data were analyzed using the one-way ANOVA test followed by the Tamhane post-hoc test for pairwise comparisons of the groupsResults: Independent of the type of the applied liner, all groups exhibited inferior SBS to dentine compared to the control group. GT and GR showed significantly higher shear bond strength than GB and GD, which showed the lowest shear bond strength. GL and GA also had significantly lower SBS results than GT. The mode of fracture was predominantly cohesive in GD, GB, and GT and adhesive in GA.Conclusion: This present study concludes that the bond strength of resin-composite to dentine can be affected differently using various types of liners.
Clustering Algorithm to Reduce Power Consumptions for Wireless Sensor Networks

A sensor network has many sensor nodes with limited energy. One of the important issues in these networks is the increase of the life time of the network. In this article, a clustering algorithm is introduced for wireless sensor networks that considering the parameters of distance and remaining energy of each node in the process of cluster head selection. The introduced algorithm is able to reduce the amount of consumed energy in the network. In this algorithm, the nodes that have more energy and less distance from the base station more probably will become cluster heads. Also, we use algorithm for finding the shortest path between cluster heads and base station. The results of simulation with the help of Matlab software show that the proposed algorithm increase the life time of the network compared with LEACH algorithm.