Miracle-dz/UniFAR-FTUs huggingface dataset:
Statistical comparison of TEC derived from GPS and ISR observations at high latitudes

A comprehensive data set collected with the Poker Flat Incoherent Scatter Radar (PFISR) and GPS receiver in Fairbanks, Alaska (magnetic latitude = 65.4°N) in 2007–2010 is employed to analyze and compare the total electron content (TEC) estimates derived from two radio techniques at high latitudes. The average TEC trends are shown to be largely similar and consistent with expectations based on solar conditions. The TEC residuals expressed as the difference and ratio between the PFISR‐ and GPS‐derived TEC are evaluated to be below 2 total electron content units (TECU = 1016 electronsm−2) and 0.7–0.8, respectively, with some dependence on solar conditions. The agreement between TEC estimates is examined by limiting the difference between the GPS satellite and PFISR beam elevations to 2.5° and postintegrating GPS measurements over the period of each PFISR measurement. Factors controlling the agreement are investigated, including possible roles of GPS satellite bias, GPS elevation angle, and topside contribution to TEC. It is demonstrated that the best agreement, expressed as a linear correlation and a fraction of points consistent with the linear trend, is achieved with satellites at the largest elevation angles and smallest distances from PFISR, which are a possible effect of small spatial differences and unremoved differential biases. Estimates of the topside contribution to TEC range between 14% and 30% and are most consistent during daytime hours, while observations near the solar terminator and during the night suffer from large uncertainties.
Firmness and Cell Wall Changes during Maturation of ‘Arbequina’ Olive Fruit: The Impact of Irrigation

The olive tree (Olea europaea L.) has been cultivated around the Mediterranean basin since ancient times, ‘Arbequina’ being one of the most widely grown varieties. To improve the knowledge on ripening-related firmness changes in olive fruit, cell wall metabolism was studied in irrigated and rain-fed ‘Arbequina’ olives grown at ‘Les Garrigues’, a Protected Designation of Origin (PDO) in Catalonia (NE Spain) where harsh environmental conditions occur during fruit development. Fruit samples were picked periodically from September to January. Time-course dynamics of firmness loss during maturation were characterised by a first phase of rapid firmness loss followed by a second phase of moderate change. Compositional changes in cell walls and related enzyme activities were studied in fruit samples. Fruit firmness was significantly higher in rain-fed than in irrigated olives. Neutral sugar loss, an early event in ripening-related cell wall modifications, was lower in rain-fed samples, which, moreover, retained higher uronic acid amounts in the chelator-soluble fraction, thus resulting in attenuated firmness loss in these fruits.
Singular coefficients in the K–theoretic Farrell–Jones conjecture

is a weak equivalence (resp. a fibration) for every H 2 F . A G–space X is called a . G;F/–complex if the stabilizer of every simplex of X is in F . The category of G–spaces can be equipped with a closed model structure where the weak equivalences (resp. the fibrations) are the F –equivalences (resp. the F –fibrations); see [3, Section 1]. The . G;F/–complexes are the cofibrant objects in this model structure. By a general construction of Davis and Luck [7], any functor E from the category Z-Cat of small Z–linear categories to the category Spt of spectra that sends category equivalences to weak equivalences of spectra gives rise to an equivariant homology theory of G–spaces X 7! H.X;E.R// for each unital ring R . If H G is a subgroup, then
Structural Characterization and Dielectric Properties of Sol-Gel Synthesized BiScO3-0.64PbTiO3 Ceramics

(1-x)BiScO3-xPbTiO3 (BS-0.64PT) nano-sized powders were successfully synthesized with sol-gel process. The structure and morphology of the powders was performed by x-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The average grain size of the calcined gel-powder was ∼30 nm, that fine grain powder was used to obtain fine grain ceramics with pure perovskite phase. The XRD structural analysis of the sintered ceramics by Rietveld refinement revealed the co-existence of tetragonal and monoclinic phases. The dielectric properties of BS-0.64PT ceramics were also investigated.
iTourSPOT: a context-aware framework for next POI recommendation in location-based social networks

ABSTRACT The rising prosperity of Location-based Social Networks (LBSNs) witnessed an explosion in the availability of geo-tagged social media data, which enables tremendous location-aware online services, especially next point of interest (POI) recommendation. However, previous next POI recommendation studies usually adopt fix-length time windows for user check-in sequence modeling, leading to a limited capacity in capturing fine-grained user temporal preferences that easily change over time. Besides, existing methods often directly leverage multi-modal contexts as auxiliary to alleviate the data sparsity issue, which fails to fully exploit the sequential patterns of contextual information for inferring user interest drift. To address the above challenges, we propose a novel framework named iTourSPOT which extends traditional collaborative filtering methods with a context-aware POI embedding architecture. For enhancing temporal interests modeling capacity, we associate the context feature extraction with varying-length sessions and incorporate check-in frequencies of POIs as prior knowledge to instruct the session representation learning of our model. Moreover, a collaborative sequence transduction model is designed for joint context sequence modeling and session-based POI recommendation. Experimental results on a real-world geo-tagged photo dataset clearly demonstrate the effectiveness of the proposed framework when compared with state-of-the-art baseline methods, especially in both sparse and cold-start scenarios.
Differentiated Scaffolding Strategies in Triangle Congruence: Their Effects on Learners’ Academic Performance and Confidence in Mathematics

The benefits of differentiated scaffolding strategies on boosting academic performance and confidence in Mathematics learners were studied in this paper. Quasi-experimental research was conducted at a state university’s Secondary School Laboratory in the Philippines. It involved sixty Grade 8 learners, 30 from the control group and 30 from the experimental group. A panel of specialists assessed developed lessons on triangle congruence topics and the academic performance test and confidence scale. The developed lesson, test, and scale were improved after the panel of experts’ comments and suggestions were considered. The instruments were pilot tested and came out reliable; the academic performance test had a Cronbach alpha of 0.807, while the confidence scale in Mathematics had a Cronbach alpha of 0.810. In addition, the mean, standard deviation, One-way Analysis of Covariance (ANCOVA), and Pearson Product Moment Correlation were used to analyze the data. The findings demonstrated that when learners were taught using differentiated scaffolding strategies, their academic performance significantly increased at the Fairly Satisfactory level. However, when they were taught using conventional teaching strategies, their academic performance remained at Did Not Meet Expectations. The performance outcomes of both groups were significantly different. Also, there was no significant difference in learners’ confidence between the two groups when compared. Furthermore, there was a significant link between academic performance and confidence in Mathematics among students taught using differentiated scaffolding methodologies. Thus, concerns about increasing learners’ mathematical literacy may be addressed with differentiated scaffolding strategies.
LIOUVILLE'S THEOREM AND POWER SERIES FOR QUATERNIONIC FUNCTIONS

In recent years quaternionic functions have been an intense and prosperous object of research, and important results were determined [1]-[6]. Some of these results are similar to well known cases in one complex variable, op. cit. [5], [6]. In this paper the hypercomplex expansion of a function in a power series as well as determination of a Liouville’s type theorem have been investigated to the quaternionic functions. In this case, it is observed that the Liouville’s type theorem is true for second order derivatives, which differs from its classical version. AMS Subject Classification: 30G99, 30E99
THE ASYMPTOTIC EQUIVALENCE OF THE FISHER INFORMATION MATRICES FOR TYPE I AND TYPE II CENSORED DATA FROM LOCATION-SCALE FAMILIES

Type I and Type II censored data arise frequently in controlled laboratory studies concerning time to a particular event (e.g., death of an animal or failure of a physical device). Log-location-scale distributions (e.g., Weibull, lognormal, and loglogistic) are commonly used to model the resulting data. Maximum likelihood (ML) is generally used to obtain parameter estimates when the data are censored. The Fisher information matrix can be used to obtain large-sample approximate variances and covariances of the ML estimates or to estimate these variances and covariances from data. The derivations of the Fisher information matrix proceed differently for Type I (time censoring) and Type II (failure censoring) because the number of failures is random in Type I censoring, but length of the data collection period is random in Type II censoring. Under regularity conditions (met with the above-mentioned log-location-scale distributions), we outline the different derivations and show that the Fisher information matrices for Type I and Type II censoring are asymptotically equivalent.
The half-painted picture: Reviewing the mental health impacts of cancer screening

Cancer screening is recommended for select cancers worldwide. Cancer screening has become increasingly effective and accessible and often increases overall survival. However, the mental health effects of cancer screening, such as its impact on depression, anxiety, and post-traumatic stress disorder, are largely unknown. Conflicting available literature indicates the negative, neutral, and positive mental health effects of cancer screening across cancer types. There are a limited number of randomized controlled trials measuring the mental health effects of cancer screening. Overall, the more negative and life-threatening the screening results, the greater the mental health effects. Screening for cancer without a known precursor, for example, due to family history, can have positive impacts such as decreased worry and increased quality of life. However, receiving a cancer diagnosis often has negative mental effects that increase with the life-threatening potential of malignancy. In this study, we review the existing literature and provide recommendations for future research to determine if and when cancer screening is the best practice.
Applying a Critical Lens to Teachers' Use of Social Media for Civic Education

Traditional civic education in the U.S. often does not meet the needs of students. Whether through outdated or uninspiring methods or by functionally disenfranchising students who are not part of the predominant power structure, mainstream civic education maintains hegemonic structures and, in turn, systems of oppression. Scholars have argued that reconceptualizing citizenship is an important component to addressing these shortcomings. Further, an increased use of social media as a tool for new forms of civic participation has been observed, but little research has been done to examine how teachers are using these platforms in their teaching of civics. This study explored high school social studies teachers’ conceptualizations of citizenship and their use of the social media platform, Twitter, with their students for civic education. Findings showed that teachers’ conceptions of citizenship were influenced by their local context: teachers observed geographic or racial barriers for their students’ civic participation, which informed how they understood and taught about civic participation. Teachers’ use of Twitter was intended to provide ways for students to disrupt the systems that established these barriers; however, teachers’ practice of using Twitter did not always align with their intentions.
What Do Words Convey? A Thematic and Linguistic Analysis of Undergraduates' Reasons for Choice of Major and Associations With Science Motivation

: To better understand underrepresented undergraduates’ motivation for pursuing their major, we examined undergraduates’ articulated explanations for their major choice and its association with their motivational beliefs within an introductory chemistry course. Students’ (n=503, 68% female, 56% First-Generation College-Going, 34% Hispanic) open-ended explanations for their major choice was examined a) by examining prevalent content themes, and b) by examining linguistic features of their written responses (word count, use of affective words). Undergraduates most frequently referenced occupation-related and enjoyment-related reasons for their major choice. Undergraduates in Life science-related majors that mentioned occupation-related reasons also reported lower levels of interest in Chemistry. We also found a positive association between students’ surveyed motivational beliefs in Chemistry and the length of their major choice explanations. words thematic and written. The application of psycholinguistics to understanding students’ rationale for choice of science-major is relatively new. Findings for this study offer insights into how we can leverage the power of students’ language use as a tool for further understanding their motivations and cognitions. In contrast to traditional survey methodology, this is a unique approach to exploring students’ rationalization and STEM-related choices by focusing on linguistic cues to identify and describe language use in communicating their motives. Research and educational implementations will be discussed.
Numerical study on the cooling performance and inlet mass flow rate per unit area of Ranque–Hilsch vortex tubes with different area ratios

Abstract The development of the Ranque-Hilsch vortex tube has stagnated since the 1950s, when Hilsch improved the vortex tube proposed by Ranque. Consequently, the performance of vortex tubes has remained constant for the past 70 years. In addition to the unclear flow structure and energy separation mechanism of vortex tubes, the lack of a mature design method for vortex tubes has also limited its widespread adoption for industrial applications. The inlet nozzle and main tube parameters have been studied extensively, and matching the inlet with the main tube is considered an important step in the design of a vortex tube; however, this process has not been studied extensively. In addition, although the temperature drop at the cold exit is a commonly adopted performance benchmark, it is not possible to establish a close relationship between this parameter and the geometric parameters of a vortex tube. This study investigates the relationship between the cooling performance and the area ratio of a vortex tube. The results indicate that the inlet mass flowrate per unit area has a positive correlation with the cooling performance, and its influence on the performance of a vortex tube is higher than that of the distribution of the reverse flow boundary. Therefore, the inlet mass flowrate per unit area can potentially be a geometric performance benchmark. However, further studies are required to develop better guidelines for optimizing the design and to obtain a deeper understanding of the energy separation mechanism of vortex tubes.
COVID-19 Salivary Protein Profile: Unravelling Molecular Aspects of SARS-CoV-2 Infection

COVID-19 is the most impacting global pandemic of all time, with over 600 million infected and 6.5 million deaths worldwide, in addition to an unprecedented economic impact. Despite the many advances in scientific knowledge about the disease, much remains to be clarified about the molecular alterations induced by SARS-CoV-2 infection. In this work, we present a hybrid proteomics and in silico interactomics strategy to establish a COVID-19 salivary protein profile. Data are available via ProteomeXchange with identifier PXD036571. The differential proteome was narrowed down by the Partial Least-Squares Discriminant Analysis and enrichment analysis was performed with FunRich. In parallel, OralInt was used to determine interspecies Protein-Protein Interactions between humans and SARS-CoV-2. Five dysregulated biological processes were identified in the COVID-19 proteome profile: Apoptosis, Energy Pathways, Immune Response, Protein Metabolism and Transport. We identified 10 proteins (KLK 11, IMPA2, ANXA7, PLP2, IGLV2-11, IGHV3-43D, IGKV2-24, TMEM165, VSIG10 and PHB2) that had never been associated with SARS-CoV-2 infection, representing new evidence of the impact of COVID-19. Interactomics analysis showed viral influence on the host immune response, mainly through interaction with the degranulation of neutrophils. The virus alters the host’s energy metabolism and interferes with apoptosis mechanisms.
Genetic variation and parameters for growth and feed efficiency traits in Boran beef cattle in Kenya

A major drawback of improving feed efficiency in beef cattle enterprises is to identify measures of feed efficiency which do not require feed intake information on an individual animal basis. Kleiber Index, (KI) and relative growth rate (RGR) are alternative measures which do not need individual measurement of intake and can be used select for improved feed and growth efficiency in relation to their body size. The aim of this study was to estimate genetic parameters for measures of feed efficiency and growth traits for the Boran beef cattle in Kenya. A total of 1348, 2209, 2183 and 2184 weight records were available for birth, weaning, yearling and 550-day weight records, respectively, were available for animals born between 1973 and 2019. The traits derived were growth rates (ADG), adjusted weights (WA), KI and RGR at weaning (205 days), yearling (365 days) and 550 days. Genetic parameters were estimated using a maternal genetic effects model. Direct heritability estimates for direct heritability estimates for ADG ranged from 0.12±0.04 for ADG205-365 to 0.27±0.02 for ADGB-205. Estimates for WA were in range of 0.05±0.05 at to 0.10±0.05 at 550 days. Estimates for KI were 0.13±0.05 at 205 to 0.29±0.05 at 550 days. For RGR estimate direct heritability at 205 was 0.21±0.05, 0.19±0.04 at 365 and 0.33±0.05 at 550 days. The direct-maternal genetic correlations for WA, ADG, KI and RGR at 205 days were -0.30±0.05, -0.30±0.04, 0.90±0.05 and -0.72±0.04, respectively. Alongside growth traits, Kleiber Index and residual growth rate had substantial heritability estimates, implying potential for improvement through selection.
When Hamilton circuits generate the cycle space of a random graph

If eps > 0 and p >= n^{-1/2 + eps}, in a binomial random graph G(n,p) a.a. s. the set of cycles which can be constructed as a symmetric difference of Hamilton circuits is as large as parity by itself permits (all cycles if n is odd, all even cycles if n is even). Moreover, every p which ensures the above property a.a. s. must necessarily be such that for any constant c>0, eventually p >= (log n + 2 log log n + c)/n. So, whatever the smallest sufficient p for an a.a. s. Hamilton-generated cycle space might be, it does not coincide with the threshold for hamiltonicity of G(n,p).
The effect of online learning quality on vocational students' learning achievement during the Covid-19 Pandemic

This study aimed to analyze the effect of online learning quality on vocational students' learning achievement during the Covid-19 pandemic. This type of research uses a quantitative approach with ex post facto research, which aims to analyze exogenous variables (online learning quality) with endogenous variables (vocational students' learning achievement during the Covid-19 pandemic). The population of this study was 198 vocational students in the hotel management program Universitas Negeri Padang who took the front office operations two courses in the semester of January-June 2021. The sampling technique used in this study is total sampling. The number of successfully collected respondents was 174 people (87,9%). The data analysis technique used is simple linear regression analysis. The results showed that: (1) Online learning quality during the Covid-19 pandemic is a sufficient category, (2) Vocational students' learning achievements during the Covid-19 Pandemic are also in a good category, and (3) There is a significant influence on the online learning quality variable on the vocational students' learning Achievement during the Covid-19 Pandemic. The magnitude of the online learning quality variable's influence on the vocational students' learning achievement during the Covid-19 Pandemic is 2.7%, while other factors determine 97.3%. This finding also provides a basis for other researchers to look at and have a wider scope, especially those related to student learning achievement. Vocational programs in universities must design an attractive learning process development program for students while still paying attention to the quality of the learning process. This form of practical implication will encourage students to be more motivated to study well so that their learning achievement can be obtained as expected.
Examining the Relationship between Mobbing and Organizational Cynicism

In this study, the relations between the experience level of bullying behaviors and organizational cynicism are explored, using the views of teachers. The study group comprised 235 teachers working in state secondary schools in the Meram municipality of Konya during the 2017–2018 academic year. The Negative Act Questionnaire-Revised and Organizational Cynicism Scale were used to collect the data. In this descriptive study, standard deviation, mean, Pearson product-moment correlation coefficient, and multiple linear regression analyses were used in the analysis of the data. It was observed that the levels of exposure to mobbing behavior and organizational cynicism of the participants in the study were low. It was furthermore shown that the dimensions (personal bullying, work-related bullying, and physical intimidation) of negative act questionnaire-revised have a positive and significant relation with all dimensions of organizational cynicism scale. According to the results of regression analysis, it was determined that the cognitive and affective dimensions of organizational cynicism scale are significantly and positively predicted by the personal bullying and work-related bullying dimensions of negative act questionnaire-revised, and all dimensions of negative act questionnaire-revised predict the behavioral dimension of organizational cynicism at a significant level. According to the results obtained from the research, as the levels of teachers’ exposure to mobbing behaviors decrease, their organizational cynicism levels also decrease. Exposure to mobbing behaviors has a strong predictive effect on organizational cynicism.