bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating Students’ Attitude and Motivation in Learning English as a Second Language among Four Higher Institutions in Malaysia
Authors: Abdul Kadir Zulida Binti , Abdullah Rosmahalil Azrol Bin , @Thulasi Palpanadan Sarala , Zainal Abidin Siti Sara Binti , Muhammad Siti Salmiah Binti , Mohamed Abdullah Adnan Bin 
Published: April 2022

The aim of this study is to examine the students’ motivation and attitude towards learning English as a second language from four Malaysian higher institutions. A random sampling of 471 respondents participated in this study. Using 28 items instrument, adapted from Gardner’s Attitude/Motivation Test Battery (AMTB), an online questionnaire was distributed in getting the data. Students’ motivational level is found to be high with (M=6.37, SD=0.77, M=6.10, SD=0.82). Additionally, the respondents are having positive attitudes in learning English (M=4.07, SD=0.48). With the findings, it is a hope that this can be a guidance for instructors to design a suitable lesson and approach to be used in the class.
A few more extensions of Putinar’s Positivstellensatz to non-compact sets
Authors: Escorcielo Paula , Perrucci Daniel 
Published: April 2022

Abstract
We extend previous results about Putinar’s Positivstellensatz for cylinders of type S × ℝ to sets of type S × ℝ
r
in some special cases, taking into account r and the degree of the polynomial with respect to the variables moving in ℝ
r
(this is to say, in the non-bounded directions). These special cases are in correspondence with the ones where the equality between the cone of non-negative polynomials and the cone of sums of squares holds. Degree bounds are provided.
Kazhdan–Lusztig conjecture via zastava spaces
Authors: Braverman Alexander , Finkelberg Michael , Nakajima Hiraku 
Published: April 2022

Abstract
We deduce the Kazhdan–Lusztig conjecture on the multiplicities of simple modules over a
simple complex Lie algebra in Verma modules in category

𝒪

{\mathcal{O}}

from the equivariant
geometric Satake correspondence and the analysis of torus fixed points in zastava spaces.
We make similar speculations for the affine Lie algebras and

𝒲

{\mathscr{W}}

-algebras.
Challenges in genetic counseling for congenital anomalies of the kidneys and urinary tract (CAKUT) spectrum
Authors: Gong Ping , Pelletier Myriam , Silverman Neil , Kuhlman Kathleen , Wallerstein Robert 
Published: April 2022

Abstract

Objectives
Congenital anomalies of the kidneys and urinary tract (CAKUT) are one of the most common sets of congenital defects. Bilateral renal agenesis is a severe presentation of the CAKUT spectrum.

Case presentation
We report on two families who presented with recurrent pregnancies affected with bilateral renal agenesis and negative family histories. Likely pathogenic variants in the GREB1L gene were identified in the affected pregnancies and subsequently in their asymptomatic fathers. The first familial variant was identified by a multi-gene CAKUT panel and the second by whole exome sequencing. Renal ultrasound showed the father in family 1 had asymptomatic unilateral pelvic kidney and the father in family 2 had no apparent renal anomalies.

Conclusions
Recent identification of genes responsible for CAKUT allows for genetic testing of affected families. Identification of the genetic etiology of CAKUT cases has multiple benefits including accurate risk assessment and reproductive options. Genetic counseling around CAKUT is challenging due to the extreme variability in presentation of the disorders.
Iwasawa invariants for elliptic curves over ℤ
p
-extensions and Kida's formula
Authors: Kundu Debanjana , Ray Anwesh 
Published: April 2022

Abstract
This paper aims at studying the Iwasawa λ-invariant of the p-primary Selmer group.
We study the growth behavior of p-primary Selmer groups in p-power degree extensions over non-cyclotomic

ℤ
p

{\mathbb{Z}_{p}}

-extensions of a number field.
We prove a generalization of Kida’s formula in such a case.
Unlike the cyclotomic

ℤ
p

{\mathbb{Z}_{p}}

-extension, where all primes are finitely decomposed, in the

ℤ
p

{\mathbb{Z}_{p}}

-extensions we consider primes may be infinitely decomposed.
In the second part of this paper, we study the relationship of Iwasawa invariants with respect to congruences, obtaining refinements of the results of Greenberg, Vatsal and Kidwell.
As an application, we provide an algorithm for constructing elliptic curves with large anticyclotomic λ-invariant.
Our results are illustrated by explicit computation.
Existence of weak solutions to a general class of diffusive shallow medium type equations
Authors: Dietrich Nicolas 
Published: April 2022

Abstract
In this article, we prove existence of weak solutions of a general class of diffusive shallow medium type equations. We truncate the coefficients from above and below. Then we prove existence to the problems associated with the truncated vector fields.
At last, we show that the approximating solutions converge to the solution of the initial value problem.
Pseudo-dynamic optimisation and study of the effect of gradual and sudden changes on the operating conditions of a naphtha catalytic reforming unit
Authors: Mehneh Farangis Fallah , Abghari Sorood Zahedi , Gilani Neda , Yaghoubi Khashayar 
Published: April 2022

Abstract
Naphtha catalytic reforming is a key process for oil refining in terms of production of gasoline with a high octane number. In the present research, the gradual and sudden effect of operating conditions changes on the products of the catalytic reforming unit and the octane number, as well as how to neutralize their negative effects were investigated. Also, kinetic parameter optimisation and unit operation optimisation, using the Levenberg–Marquardt algorithm were performed. For these purposes, a suitable dynamic model was solved within a three-lump kinetic network that included a model of the reactors, furnaces, and catalyst deactivation functions. In addition, two cases were considered for operationalizing the optimization to maintain the octane number at its highest value during the catalyst lifetime. In the first case, the optimization parameters were the inlet temperature of the three reactors along with the recycle flow rate; in the second case, the optimised parameters were the inlet temperature of the three reactors, the recycle rate, and the feed flow rate.
Pre-and post-disturbance transient stability assessment using intelligent systems via quick estimating of the critical clearing time
Authors: Karbalaei Farid , Shabani Hamid Reza , Abbasi Shahriar 
Published: April 2022

Abstract
The real time transient stability assessment is the important steps of the dynamic security evaluation of power systems. To do this, intelligent systems (ISs) such as neural networks as an effective method to accurately and quickly estimate the critical clearing time (CCT) has been widely used. But, choosing the proper inputs for these systems remains a major challenge for researchers, still. Variables related to energy functions such as minimum kinetic energy, the slope of the variation of the minimum kinetic energy and maximum potential energy contain useful information in estimating CCT. Accordingly, in this paper, these variables are used as the IS inputs. However, the time-domain simulation of the power system response to obtain these inputs is time consuming. To be able to use the energy function-based inputs for real time stability assessment, in addition to the main IS used to estimate CCT, another ISs are used. By those ISs, a very limited period of system response is simulated to obtain proper inputs of the main IS. The method is simulated on the 10-generator New England test system. Simulation results show, the CCT can be found by simulation just 0.05 s of the considered power grid.
Explicit construction of mock modular forms from weakly holomorphic Hecke eigenforms
Authors: Choi SoYoung , Kim Chang Heon 
Published: April 2022

Abstract
Extending our previous work we construct weakly holomorphic Hecke eigenforms whose period polynomials correspond to elements in a basis consisting of odd and even Hecke eigenpolynomials induced by only cusp forms. As an application of our results, we give an explicit construction of the holomorphic parts of harmonic weak Maass forms that are good for Hecke eigenforms. Moreover, we give an explicit construction of the Hecke-equivariant map between the space of weakly holomorphic cusp forms and two copies of the spaces of cusp forms, and show that the map is compatible with the corresponding map on the spaces of period polynomials.
Seasonal Variation of Physical Performance, Bilateral Deficit, and Interlimb Asymmetry in Elite Academy Soccer Players: Which Metrics Are Sensitive to Change?
Authors: Bishop Chris , Abbott Will , Brashill Calum , Loturco Irineu , Beato Marco , Turner Anthony 
Published: April 2022

Abstract
Bishop, C, Abbott, W, Brashill, C, Loturco, I, Beato, M, and Turner, A. Seasonal variation of physical performance, bilateral deficit, and interlimb asymmetry in elite academy soccer players: Which metrics are sensitive to change? J Strength Cond Res 37(2): 358–365, 2023—This study aimed to report seasonal variations for (a) physical performance, (b) interlimb asymmetry, and (c) bilateral deficit (BLD) data over the course of a competitive soccer season and determine which metrics are sensitive to change. This study used a repeated-measures observational design for 19 under-20, elite, academy, soccer players (age: 17.58 ± 0.61 years; height: 1.81 ± 0.09 m; body mass: 74.36 ± 7.58 kg), who conducted bilateral and single-leg countermovement jumps (CMJ and SLCMJ), linear speed (5, 10, 20, and 30-m) and 505 change of direction (COD) speed tests, at pre, mid, and end of season time points. For jump tests, jump height, reactive strength index modified, time to takeoff, and countermovement depth metrics were monitored, with interlimb asymmetry and the BLD also calculated for each. Significant improvements (p < 0.05) in performance were evident in all fitness tests: CMJ (effect size [ES]: 0.61 to 1.03), SLCMJ (ES: 0.60 to 2.25), linear speed (ES: −0.54 to −1.96), and COD speed (ES: −0.68 to −1.14). Significant reductions in asymmetry (ES: −0.68 to −1.07) and significant increases in the BLD (ES: 1.15 to 1.57) were also evident throughout the season. Additionally, kappa coefficients were used to determine consistency in limb dominance throughout the season, but only poor to fair levels of agreement (kappa: −0.17 to 0.37) were evident, highlighting the fluctuating nature of limb dominance throughout the season. Despite all tests exhibiting meaningful change, the SLCMJ and linear speed showed the most frequent and largest differences in performance, highlighting their usefulness in the ongoing monitoring process of physical capacities in elite male academy players across a competitive soccer season.
Nadimački sustav u Imotskoj krajini na primjeru obiteljskih i osobnih nadimaka u Gornjim Vinjanima
Authors: Lončar Ivana 
Published: April 2022

Istraživanje se temelji na 1134 antroponima prikupljenih na području Gornjih Vinjana. Na temelju primjera nadimačkoga sustava nastoji se pokazati nastanak, motivacija i isprepletenost porodičnih (rodovskih), obiteljskih i osobnih nadimaka u Imotskoj krajini, nasljeđivanje i nadijevanje nadimaka te složenost imenske formule u malim zatvorenim seoskim zajednicama u kojima postoji entropija prezimenâ, imenâ pa čak i hipokoristika. Polazni korpus rada čine 703 imenske formule iz telefonskoga imenika župnoga lista i 431 antroponima prikupljenih i ovjerenih terenskim istraživanjem, a zasebno se obrađuju jednorječni i dvorječni te muški i ženski nadimci. Osim prikupljanja korpusa antroponima koji izumiranjem nositelja, iseljavanjem i promjenom načina života nestaju iz leksika lokalnih govora koji se također ocrtava u antroponimiji, rezultati istraživanja pokazuju da je primarna svrha nadijevanja obiteljskih i osobnih nadimaka precizna identifikacija njihovih nositelja, ali i da postoji (iako ne uvijek ujednačen) ustaljen sustav nadijevanja i nasljeđivanja ne samo obiteljskih nego i osobnih nadimaka. Iako se smatraju neslužbenim dijelom imenske formule, obiteljski se (pa i osobni) nadimci u Imotskoj krajini rabe i u službenoj komunikaciji (npr. poštanskoj) jer je u zaseocima u kojima svi žitelji nose ista prezimena (koja tvore i pripadajuće ojkonime) imenski repertoar ograničen i nadimci su jedini način raspoznavanja mještana, kao i precizan odgovor na pitanje “čiji si”.
Praktik Terbaik Program Belajar dari Rumah (BDR) di Indonesia dan di Kota Mekkah
Authors: Pranoto Yuli Kurniawati Sugiyo , Sugiyo Sugiyo , Nafisah Aisyah Durrotun , Prasojo Bayu Tri 
Published: April 2022

Abstrak. Saat ini, sudah dapat dipastikan dunia pendidikan anak usia dini di seluruh dunia telah banyak melakukan perubahan dan inovasi pembelajaran dengan adanya pandemic covid-19 yang mengharuskan kegiatan pembelajaran beralih dari sekolah ke rumah. Berbeda dengan 1 tahun ke belakang, dunia Pendidikan seolah kaget dan belum siap dengan adanya status pandemic yang mendadak dan mengharuskan pemerintah mengambil kebijakan untuk menutup sekolah. Penerapan berbagai strategi pembelajaran dan komunikasi guru-orangtua menjadi salah satu solusi untuk menemukan ramuan yang pas dalam mentransformasikan pengetahuan kepada anak usia dini yang baik bagi perkembangan anak usia dini. Tujuan dari kegiatan pengabdian ini adalah sebagai bahan evaluasi dan masukan untuk perencanaan ke depan sekalipun pandemic sudah berakhir. Metode dalam penelitian ini adalah pengabdian kepada masyarakat dengan melibatkan dua PAUD Mitra, di Indonesia dan Sekolah Indonesia di Luar Negeri (SILN) di Mekkah, dengan melibatkan staf sekolah dan perwakilan komite dari lembaga lain di sekitar kota Semarang. Hasil menunjukkan bahwa praktik terbaik dalam pembelajaran dari rumah dapat diupayakan jika ada kolaborasi guru dan orang tua. Kegiatan ini juga meningkatkan pemahaman para peserta FGD mengenai bagaimana praktik terbaik dalam bentuk kolaborasi guru dan orang tua selama pelaksanaan pembelajaran dari rumah dimana masing-masing pihak menjalankan peran terbaiknya.
Abstract. Currently, it is certain that early childhood education around the world has made many changes and learning innovations with the Covid-19 pandemic which requires learning activities to shift from school to home. In contrast to 1 year ago, the education world seemed shocked and not ready for the sudden pandemic status and required the government to take a policy to close schools. The application of various learning strategies and teacher-parent communication is one solution to find the right ingredients in transforming knowledge to early childhood that is good for early childhood development. The purpose of this service activity is as an evaluation material and input for future planning even though the pandemic is over. The method in this research is community service by involving two PAUD Partners in Indonesia and Indonesian Schools Abroad (SILN) in Mecca, involving school staff and committee representatives from other institutions around the city of Semarang. The results show that best practice in learning from home can be pursued if there is collaboration between teachers and parents. This activity also increased the understanding of the FGD participants on how best practices are in the form of collaboration between teachers and parents during the implementation of learning from home where each party carries out its best role.
The Effect of Readmission for Phototherapy on Early Breast Milk Feeding
Authors: Digitale Jean C. , Chang Pearl W. , Li Sherian X. , Kuzniewicz Michael W. , Newman Thomas B. 
Published: April 2022

OBJECTIVES
To estimate the effect of readmission for inpatient phototherapy on parent-reported exclusive and any breast milk feeding at 2-month well-child visits.

METHODS
We performed a retrospective cohort study using electronic health record data. From births at 16 Kaiser Permanente Northern California hospitals (2013–2017), we identified a cohort of infants ≥35 weeks’ gestation with outpatient total serum bilirubin levels ranging from 1 mg/dL below to 2.9 mg/dL above the American Academy of Pediatrics phototherapy threshold at &lt;15 days of age. We compared breast milk feeding at 2-month well-child visits among those readmitted and not readmitted to the hospital for phototherapy, adjusting for bilirubin and other confounding variables.

RESULTS
Approximately one-quarter (26.5%) of the cohort (n = 7729) were readmitted for phototherapy. Almost half (48.5%) of the infants who were not readmitted for phototherapy received exclusively breast milk at the 2-month visit compared with slightly fewer infants who were readmitted (42.9%). In both groups of infants, most (82.2% not readmitted and 81.2% readmitted) received any breast milk. Readmission for phototherapy was associated with a lower adjusted risk of exclusive breast milk feeding (adjusted risk ratio 0.90; 95% confidence interval [CI], 0.84 to 0.96), corresponding to a marginal absolute reduction in exclusive breast milk feeding of 5.0% (95% CI, −7.9% to −2.1%). It was not associated with a reduction in any breast milk feeding (adjusted risk ratio, 1.00; 95% CI, 0.97 to 1.02).

CONCLUSIONS
Infants readmitted for phototherapy were more likely to receive any formula, but no less likely to receive any breast milk at 2-month well-child visits.
Test-to-Stay After Exposure to SARS-CoV-2 in K–12 Schools
Authors: Campbell Melissa M. , Benjamin Daniel K. , Mann Tara , Fist Alex , Kim Hwasoon , Edwards Laura , Rak Zsolt , Brookhart M. Alan , Anstrom Kevin , Moore Zack , Tilson Elizabeth Cuervo , Kalu Ibukunoluwa C. , Boutzoukas Angelique E. , Moorthy Ganga S. , Uthappa Diya , Scott Zeni , Weber David J. , Shane Andi L. , Bryant Kristina A. , Zimmerman Kanecia O. ,   ABC SCIENCE COLLABORATIVE
Published: April 2022

OBJECTIVES
We evaluated the safety and efficacy of a test-to-stay program for unvaccinated students and staff who experienced an unmasked, in-school exposure to someone with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Serial testing instead of quarantine was offered to asymptomatic contacts. We measured secondary and tertiary transmission rates within participating schools and in-school days preserved for participants.

METHODS
Participating staff or students from universally masked districts in North Carolina underwent rapid antigen testing at set intervals up to 7 days after known exposure. Collected data included location or setting of exposure, participant symptoms, and school absences up to 14 days after enrollment. Outcomes included tertiary transmission, secondary transmission, and school days saved among test-to-stay participants. A prespecified interim safety analysis occurred after 1 month of enrollment.

RESULTS
We enrolled 367 participants and completed 14-day follow-up on all participants for this analysis. Nearly all (215 of 238, 90%) exposure encounters involved an unmasked index case and an unmasked close contact, with most (353 of 366, 96%) occurring indoors, during lunch (137 of 357, 39%) or athletics (45 of 357, 13%). Secondary attack rate was 1.7% (95% confidence interval: 0.6%–4.7%) based on 883 SARS-CoV-2 serial rapid antigen tests with results from 357 participants; no tertiary cases were identified, and 1628 (92%) school days were saved through test-to-stay program implementation out of 1764 days potentially missed.

CONCLUSION
After unmasked in-school exposure to SARS-CoV-2, even in a mostly unvaccinated population, a test-to-stay strategy is a safe alternative to quarantine.
Investigation of the Control Effect of Single Structural Plane on Stability of Rock Mass Based on Barton-Bandis Criterion
Authors: Kang Jingyu , Pang Xin , Sheng Qian , Fu Xiaodong , Wan Daochun , Xia Luqing , Zhang Shaojun 
Published: April 2022

Abstract
The structural plane plays a decisive role in the development processes of rockburst. In this paper, Barton-Bandis criterion of structural plane and its conversion relationship with Mohr-Coulomb criterion are discussed in detail. Firstly, when the structural plane obeys Barton-Bandis criterion, the value range of the dip angle of the structural plane when it is yield is deduced theoretically, and the yield function of the structural plane is proposed: F=sinA−2β+PsinA. The correctness of the theoretical derivation result is verified by a mapping method and numerical simulation method. Secondly, based on the result of theoretical derivation and assuming that rock obeys Mohr-Coulomb criterion, a fast identification method for the failure modes of rock mass is proposed. The failure modes of rock mass are divided into “no failure”, “failure along structural plane”, “failure along rock”, and “failure along both rock and structural plane”, and the correctness of the fast identification method is verified by numerical simulation. Finally, from the perspective of structural plane failure, a new method for converting Barton-Bandis criterion to Mohr-Coulomb criterion is proposed. Based on the yield of structural plane and relative error of displacement, the differences between the new method and existing conversion methods are compared. The results show that the yield condition determined by the new method is consistent with those determined by Barton-Bandis criterion, and the relative error of displacement is less than the tangent regression method and linear fitting method. In summary, the relevant methods and conclusions of this paper provide theoretical support and technical guidance for the mutual conversion between different criteria and the prediction and identification of rock mass failure modes in rockburst.