Miracle-dz/UniFAR-FTUs huggingface dataset:
Multi-Resonant-Based Sliding Mode Control of DFIG-Based Wind System under Unbalanced and Harmonic Network Conditions

In general, the integral sliding mode control (ISMC) with an integral sliding surface would lead to tracking errors under unbalanced and harmonic grid voltage conditions. In order to eliminate tracking errors under these conditions, multi-resonant items are added to the conventional integral sliding surface in the proposed strategy, which can be called multi-resonant-based sliding mode control (MRSMC). A comparison of tracking precision on the ISMC and MRSMC is analyzed. In order to regulate the system powers directly, the errors of instantaneous active and reactive powers are selected as the state variables. Finally, the output current harmonics and a majority of the doubly-fed induction generator’s (DFIG) electromagnetic torque pulsations can be removed under unbalanced and harmonic grid voltage conditions. Simulation and experimental results are presented to verify the correctness and effectiveness of the proposed strategy.
ON CONVERGENCE PROPERTY OF THE LANCZOS METHOD FOR SOLVING A COMPLEX SHIFTED HERMITIAN LINEAR SYSTEM

We discuss the convergence property of the Lanczos method for solving a complex shifted Hermitian linear system ( αI + H ) x = f . By showing the colinear coeﬃcient of two system’s residuals, our convergence analysis reveals that under the condition Re ( α ) + λ min ( H ) > 0, the method converges faster than that for the real shifted Hermitian linear system ( Re ( α ) I + H ) x = f . Numerical experiments verify such convergence property.
Fear of Adverse Mental Health Treatment Experiences: Initial Psychometric Properties of a Brief Self-Report Measure

Many are apprehensive about mental health care, which potentially affects engagement in recovery processes as well as health outcomes. This article introduces a tool to assess fear of adverse mental health treatment experiences from the client’s perspective. In a sample of 656 adults receiving mental health services at community agencies, this study is an initial exploration into the validity of a scale assessing fears associated with commonly experienced coercive or disorganized interventions. Factor analyses supported the construct validity of the 10-item Fear of Adverse Treatment Experiences Scale. It significantly discriminates based upon service characteristics, gender, history of victimization, and past experiences with coercive or disorganized interventions, with higher levels of fear reported by users of traditional mental health services, former inpatients who had their voluntary admission status changed, males, people with history of childhood abuse, and people with certain forms of criminal justice involvement.
From Fermat to Gauss: indefinite descent and methods of reduction in number theory

IndexForeword IPreface by Joachim Fischer III-VIIChapter 1: Introduction, 1-161. What is the infinite or indefinite descent 1-42. The set of problems dealt with applying the descent 4-123. Indefinite descent and complete induction 12-134. Aims and structure of the present work 13-155. The first documented application of the descent 16Chapter 2: Fermat 17-1841. Researches concerning integer numbers in Fermat's time 17-311.1. The scene before Fermat 17-201.2. The contribution of Fermat to "classical" problems and his newconception 21-312. Fermat and the indefinite descent 31-1762.1. The sources 31-322.2. Cases in which Fermat explicitly claimed that he had applied hisown method 32-392.3. "There is no Pythagorean triangle of which the area is equal tothe square of an integer number" 39-462.4. The application of the indefinite descent to the affirmative thesesand to the "particular" negative theses 46-1752.4. 1. Exposition of the matter 46-482.4. 2. Every prime number of the form 4n+l is the sum of twosquares 49-772.4. 2.1. The demonstration 49-572.4. 2.2. Logical considerations 58-652.4. 2.3. Possible attribution of Paolini's demonstration toFermat 65-682.4. 2.4. The continued fractions in Fermat's time 68-772.4. 3. Pell's equation 77-1092.4. 3.1. Preamble 77-782.4. 3.2. Introduction 79-812.4. 3.3. Fermat's "defi" and the solution of Wallis andBrouncker 81-972.4. 3.4. Some remarks 97-98
Testing Parallelism of Nonparametric Regression Curves

This paper considers the inference of regression functions in the context of multiple time series. For an arbitrary number of time series observed at a large number of time points, we test the hypothesis that the regression curves are parallel to each other. A central limit theorem is obtained for a parallelism index based on the distances between the estimates of the regression curves and their average. To implement the testing procedure, we propose a simulation-based approach that significantly improves upon the normal approximation to the test statistic. Our method is applied to a data set of daily download volumes from Motorola cell phones over 129 area codes in the United States.
Low profile dual band-stop super wideband printed monopole antenna with polarization diversity

Abstract A low profile super-wideband polarization diversity printed monopole antenna with dual band-notched characteristics is presented the first time. The designed antenna comprises two arched shaped radiating elements with two triangular tapered microstrip feed lines (TTMFL) and two arched shaped partial ground planes, which covers an enormously wide impedance bandwidth (BW) from 1.2 to 25 GHz (ratio BW of 20.8:3) for reflection coefficient |S11| < −10 dB. To ensure the high port isolation (better than − 30 dB) between two feeding ports over the whole bands, two analogous antennas have been kept perpendicular to each other at a distance of 1 mm. In addition, the dual band-notched performance in wireless local area network (5–6 GHz) and X-band (7.2–8.5 GHz) is generated by employing a pair of open-circuited stubs (L-shaped stub and horizontal stub) to the TTMFL. Envelop correlation coefficient has been computed to study the polarization diversity performance. Finally, the proposed antenna was fabricated and tested successfully. Measured results indicate that the proposed antenna is an appropriate candidate for the polarization diversity applications. The proposed antenna has a compact size of 40 × 70 × 0.787 mm3, high isolation, and occupies a small space compared with the existing antennas.
Performance Evaluation of Edge Detection Techniques on Photographic Images

: Edge detection is a fundamental tool for image processing and segmentation. In this paper an attempt is made to study the performance of most commonly used edge detection techniques for image segmentation. Image segmentation plays a vital role in image processing over the last few years. The goal of image segmentation is to cluster the pixels into salient image regions i
Antimicrobial activity and volatiles profiling of Pulicaria crispa and P.incisa growing wild in Egypt as determined via headspace SPME and steam distillation

: Volatile profile in Pulicaria crispa (Forssk.) Olivand Pulicaria incisa (Lam.) DC aerial parts was determined via headspace solid phase microextraction (HS-SPME) and steam distillation. A total of 59 volatiles were identified in P. crispa and P. incisa volatile blends . Carvotanacetone predominated the essential oil (76%)and HS (99%) blendsof P. incise . Incontrast, P . crispa essential oil was enriched in carvotanacetone (48%) and hexanal (11%) versus abundance of β - caryophyllene (98%) inits HS sample.Both oils were assessed for their antimicrobial activity and were active against Staphylococcusaureus, Bacillus subtilis, Escherichia coli and Candida albicans with P. incisa being more active with minimum inhibitory concentration of 4.9, 5.2, 2.8 and 5.7  g/ml, respectively.
University of Birmingham Relationships between motor competence, physical activity, and obesity in British preschool aged children

: Background: This cross-sectional study aimed to examine associations between motor competence, physical activity, and obesity in British children aged three to ﬁve years. Method: Motor competence (MC) was assessed using the Test of Gross Motor Development-2. Physical activity (PA) was assessed using triaxial wrist-worn accelerometers. Children were assessed on compliance to current PA recommendations of ≥ 180 min of total PA (TPA) and ≥ 60 min of moderate-to-vigorous PA (MVPA) for health beneﬁts. Associations were explored with Pearson’s product moments and weight-status, and sex-differences were explored with independent t -tests and chi-squared analysis. Results: A total of 166 children (55% males; 4.28 ± 0.74 years) completed MC and PA assessments. Associations were found between PA and MC (TPA and overall MC, TPA and object-control MC (OC), MVPA and overall MC, and MVPA and OC). This study suggests that good motor competence is an important correlate of children meeting physical activity guidelines for health.
Comparative In Vitro Quality Evaluation of Different Brands of Naproxen Tablets

This study was designed to evaluate and compare several in vitro quality parameters of six commercially available brands of naproxen 500 mg in Bangladesh, including the innovator brand Naprosyn®. General quality parameters such as physical appearance, diameter, thickness, hardness, uniformity of weight, friability and disintegration time were determined according to established protocols. Drug content was assayed using a validated UV spectrophotometric method and in vitro dissolution profiles were measured and compared with innovator brand using model independent approach of difference factor ( f 1 ) and similarity factor ( f 2 ). All the brands complied with the official USP specifications for content uniformity, friability and disintegration time. Assay of drug content revealed that all but one brand of naproxen failed to contain 90-110% of labelled claim, which is the USP requirement for naproxen sodium tablets. While the complied brands contained active ingredient ranging between 93% up to 109%, the substandard brand possessed only 80.3% naproxen sodium. In the in vitro dissolution testing that same brand failed to meet the USP requirements again, having only 66.87% release in 45 minutes while all the other brands complied by having a percent release of more than 80% within that same time frame. These findings reflected upon the difference factor ( f 1 ) and similarity factor ( f 2 ) of the brands because four of the five generic brands were statistically evaluated to have satisfactory f 1 and f 2 values with respect to the sixth innovator brand. The brand that failed to comply in both the disintegration and dissolution test was also calculated to have poor f 1 and f 2 values. Our study indicates that five out of the six brands complied with quality parameters and can be used interchangeably. Further study should be conducted to determine the presence of more substandard brands of naproxen in Bangladesh market.
AH Receptor (AHR) Splice Variants in the Dioxin-Resistant Rat: Tissue Expression and Transactivational Activity

The AHR locus encodes the aryl hydrocarbon receptor (AHR), a transcriptional regulator of multiple drug-metabolizing enzymes and mediator of toxicity of dioxin-like chemicals. The Han/Wistar( Kuopio ) rat strain (H/W) is remarkably resistant to lethal effects of 2,3,7,8-tetrachlorodibenzo- p -dioxin (TCDD) due to a point mutation in the intron/exon 10 boundary in AHR genomic structure which leads to use of 3 alternative cryptic splice sites, potentially creating 3 alternative transcripts and 2 protein products. The deletion variant (DV), which lacks 43 amino acids in the transactivation domain, has the highest intrinsic transactivation activity in vitro ; amino acids 766-783 suppress transactivation function. However, DV expression levels in H/W rats in vivo are low in liver, lung, thymus, kidney and testis; insertion-variant mRNAs (IVs) are the dominant mRNA forms in H/W rats where wildtype AHR mRNA is undetectable. In dioxin-sensitive rat strains and lines that are homozygous for wildtype AHR alleles, wildtype AHR mRNA is the most abundant transcript but some IV transcripts are detectable. TCDD treatment in vivo increases transcript levels for both the DV and IVs in H/W rats and increases wildtype transcript levels in dioxin-sensitive rats but does not alter which transcript forms are expressed. In silico modeling indicates that the DV mRNA has lost considerable secondary structure whereas at the protein level the transactivation domain of the IV in the dioxin-resistant H/W rat has greater α -helical content and a more hydrophobic terminus than wildtype AHR which may produce a protein conformation that is less amenable to interaction with other regulatory proteins.
Revisited Work-Life Balance under COVID-19 Pandemic Period: Using Discriminant Function

The study explored factors behind employees' work-life balance. The pandemic showed a surge in employee stress levels when organizations shifted to virtual platforms within a short period. The objective of this study was to predict a model for forecasting employees' behavior of work-life balance in the new normal environment when working from home. The sample consisted of 400 executive-level employees in a private bank in Sri Lanka. Discriminant analysis was carried out to test the relationship between the dependent variable and independent variables. The results proved that role conflicts are the best predictor of work-life balance among employees with 1.112 coefficient values. Values of all other variables indicated a positive contribution toward the discriminant functions with positive coefficients like management support (0.345), awareness programs (.252), and self-management of the employees (.238). It can be suggested that decision-makers need to implement psychological training, skills-based training for managers and employees, and family members are to be provided with incentives to handle difficulties encountered in the pandemic situation. shows a positive and comparatively higher (0.644) correlation between dependent and independent variables of two groups (men and women). This study focused on how men and women adjusted to the new environment and distinguished tasks carried out by men and women under the new normal environment amidst challenges. The discriminant analysis illustrated the concrete results about the relationship of role conflicts, management support, awareness programs, and employees' self-management affecting (independent variable) WLB (dependent variable). The objective of this study was to predict a model for forecasting employees' behavior of work-life balance new normal environment based on these four independent variables. Since the dependent variable was categorical, hence Discriminant analysis was applied to the data. The Discriminant score of the dependent variable less than -0.324 indicated how employees balance their work-life. In contrast, greater than 0.411 indicated how employees could not balance the work-life or WLC in a new environment under coping mechanisms in the pandemic. To evaluate the values between -0.324 to 0.411, group membership and Discriminant scores were calculated for every respondent. The cut-off value for the two groups was computed to be -0.001. Hence, the value of the dependent variable between -0.324 to -0.001 may have been considered an indication of the behavior of employees who balance work-life. Ranges of -0.001 to 0.411 may have been considered the behavior of employees who have encountered conflict in work-life. All
Title: From “sugar daddies” to “sugar babies”: exploring a pathway between inequitable sexual relationships, condom use, and adolescent pregnancy in South Africa Running header: An exploratory pathway to adolescent pregnancy in South Africa Authors:

Background: Adolescent pregnancy has been linked to adverse outcomes for both mothers and children. Most studies proposing potential risk pathways for adolescent pregnancy in South Africa are qualitative, hypothesizing links among inequitable relationships, reduced condom use and higher pregnancy rates. No known South African studies have quantitatively explored pathways leading to adolescent pregnancy. Objectives: This study aimed to: (i) identify which literature-hypothesized factors were associated with adolescent pregnancy and (ii) explore a hypothesized pathway of risk by assessing whether condom use mediated the relationship between inequitable sexual relationships and adolescent pregnancy. Methods: An exploratory cross-sectional survey in six urban and rural health districts of three South African provinces. 447 sexually-active girls aged 10-19 were interviewed, and analyses used multivariate logistic regressions controlling for confounders. Mediation tests were conducted using Hayes’ bootstrapping methodology. DIRECTIONALITY! Consistent condom use and school enrolment NEGATIVELY assoc with preg, presumably, and long-term absence and ineq sex POSITIVELY assoc with preg. Results: Consistent condom use (B=-2.118, OR=8.921, p ≤0.001) , engaging in inequitable sex (B=0.299, OR=1.349, p =0.007), long-term school absences (B=1.378, OR=3.967, p ≤0.001 ) and school non-enrollment? were the strongest factors associated with adolescent pregnancy. The indirect effect of engaging in inequitable sex on adolescent pregnancy through condom use was significant, irrespective of age, age at sexual initiation, poverty and residential environment ( B=0.1431, SE=0.0478, CI 0.0670-0.2534) . Conclusion: This multi-site cross-sectional survey supports qualitative hypotheses that girls’ inability to negotiate their partners’ condom use in inequitable sexual relationships may drive adolescent pregnancy. Interventions addressing these
Issue with the Maxwell-Boltzmann Tail?

In this note, we attempt to examine the Maxwell-Boltzmann (MB) equilibrium distribution tail i.e. exp(-e/T) for e>>T. We first consider counting arguments presented in (1) to obtain the Bose-Einstein distribution and its limit of high T to learn about the tail. Secondly, we consider the balance equation f(e1)f(e2)=f(e3)f(e4) which follows from the Boltzmann transport equation (or an “and” probability scheme) for the elastic reaction e1+e2=e3+e4 and try to argue that the MB tail may not actually occur.
A STUDY OF INTERACTIVE MULTIPLE CLASS IMAGE SEGMENTATION PROBLEMS

In this paper, we study a bilaterally constrained optimization model for the semi-supervised multiple class image segmentation problem. We prove that the solution of the corresponding unconstrained problem satisﬁes a discrete maximum principle. This implies that the bilateral constraints are satisﬁed automatically and that the solution is unique. We study domain decomposition methods for solving linear systems arising from the optimality conditions of the problem. We demonstrate that domain decomposition with block relaxation methods are quite eﬀective and outperform other tested methods. We also carry out a numerical study on the eﬀect of boundary conditions on the optimization problems which provides some insights into the speciﬁcation of boundary conditions as an input knowledge in the learning context.
Understanding the Importance of Information Systems Implementation in Organization’s Effectiveness: A Comparative Study on Two Swedish Organizations

Information systems (IS) exist in order to intensify the information flow within an organization, at all levels, specifically to allow set of data to reach the designated person, in the right format, and at the right time, generating a positive and beneficial contribution to the organization. Therefore, it is essential to investigate their intended purpose and how they affect the organization’s effectiveness in particular. This paper aims to investigate two different implementations of information systems in two organizations and understand the impact these implementations have on the respective organization’s effectiveness. We use three antecedents, namely, time-saving , workload , and system reliability , to distinguish users’ perceptions and experience with the system and how they affect the organization’s effectiveness. An interpretative method is used, due to the paradigm’s focus on social constructions and human interpretations to explain reality. The result of the findings shows that the implementation of a new IS has a greater impact on an organization’s effectiveness, compared to an older system that gets updated and add-ons. By comparing diversities between different implementations of information systems, focusing on how the chosen approach affects the effectiveness in each organization, a better grasp, and understanding of an area that lacks research and attention is highlighted.
Double Loop Inductive Feed Patch Antenna Design for Antimetal UHF RFID Tag

Planar UHF RFID antimetal tag can be widely used for the metallic products or packages with metal material inside. A double loop inductive feed planar patch antenna is proposed for UHF RFID tag mounted on metallic objects. Compared to conventional microstrip antennas or PIFA antennas used for UHF RFID tags, the double loop inductive feed patch antenna has a planar structure, with no short via or short wall, which could decrease the manufacturing cost of the tags. The double loop inductive feed structure also increases the radiation performance of the planar antenna. Moreover, the double loop inductive feed structure makes the impedance of the patch antenna be tuned easily for conjugate impedance matching.
The Effects of Numerical Precision In Scientific Applications

Throughout the last decades, multiple formats have appeared as alternatives to the IEEE 754™ standard for floating-point arithmetic. The use of low-precision formats, such as bfloat16, or of new arithmetic systems, such as posit™, has an increasing interest not only in areas like machine learning or HPC, but also general-purpose numerical algorithms can benefit from those non-standard formats, reducing computation time, power consumption or memory requirements. However, dedicated hardware for new arithmetics is not always available, and simulating different numerical precisions is essential to experiment with such alternative formats not yet implemented in hardware. In this work, we examine via software emulation the effects that different arithmetic formats and numerical precisions have in a wide variety of scientific applications. The experiments reveal that, under the same bitwidth, posit arithmetic provides up to two orders of magnitude less error than floating-point format.