bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Man’s Economy
Authors: Kahn Suzanne 
Published: January 2025

ABSTRACT: Election night in Ann Arbor, Michigan, where I live, was unseasonably warm, so I “slept” with my windows open. As a result, I came to understand what was happening to the country when I started to hear a fraternity set off fireworks every time another state was called for Donald Trump. During the slow march to 5:30 a.m., when Trump clinched his victory, my lefty bubble was periodically punctured by the sound of shots in the air. A lot of ink has been spilled about Trump’s ability to win over men, especially young men; like fireworks, his brand of misogyny is impossible to ignore. Fewer post-election takes have focused on why Kamala Harris’s message failed to turn out enough women to compensate for this gender gap (which, at 10 percent, was in fact relatively steady across the last three presidential elections). Here is one hypothesis: the economic record and message Harris carried forward as Joe Biden’s vice president was itself deeply gendered.
The total absolute curvature of closed curves with singularities
Authors: Honda Atsufumi , Tanaka Chisa , Yamauchi Yuta 
Published: January 2025

Abstract
In this paper, we give a generalization of Fenchel’s theorem for closed curves as frontals in Euclidean space ℝ
n
. We prove that, for a non-co-orientable closed frontal in ℝ
n
, its total absolute curvature is greater than or equal to π. It is equal to π if and only if the curve is a planar locally L-convex closed frontal whose rotation index is 1/2 or –1/2. Furthermore, if the equality holds and if every singular point is a cusp, then the number N of cusps is an odd integer greater than or equal to 3, and N = 3 holds if and only if the curve is simple.
New rigidity results for critical metrics of some quadratic curvature functionals
Authors: Bernardini Marco 
Published: January 2025

Abstract
We prove a new rigidity result for metrics defined on closed smooth n-manifolds that are critical for the quadratic functional 𝔉
t
, which depends on the Ricci curvature Ric and the scalar curvature R, and that satisfy a pinching condition of the form Sec > ε R, where ε is a function of t and n, while Sec denotes the sectional curvature. In particular, we show that Bach-flat metrics with constant scalar curvature satisfying Sec >

1
48

$\begin{array}{}
\displaystyle
\frac{1}{48}
\end{array}$

R are Einstein and, by a known result, are isometric to 𝕊4, ℝℙ4 or ℂℙ2.
On some relations between the perimeter, the area and the visual angle of a convex set
Authors: Bruna J. , Cufí J. , Reventós A. 
Published: January 2025

Abstract
We establish some relations between the perimeter, the area and the visual angle of a planar compact convex set. Our first result states that Crofton’s formula is the unique universal formula relating the visual angle, the length and the area. After that we give a characterization of convex sets of constant width by means of the behavior of their isotopic sets at infinity. Also for this class of convex sets we prove that the existence of an isotopic circle is enough to ensure that the considered set is a disc.
On the phylogenetic position of Rhinolophus sakejiensis (Chiroptera: Rhinolophidae)
Authors: Benda Petr , Uvizl Marek 
Published: January 2025

Abstract
The Sakeji horseshoe bat Rhinolophus sakejiensis is an endemic to south-central Africa. Until recently, it remained known only from the type series of three specimens collected in Nchila Wildlife Reserve, north-western Zambia. The phylogenetic position of R. sakejiensis was evaluated based on morphologic traits and it was suggested that it represents a part of the ‘clivosus-complex’ within the Rhinolophus ferrumequinum clade of the genus. In this study, we provide an insight into the phylogenetic position of R. sakejiensis employing molecular data, using a newly discovered specimen that originates from the identical area as the type series. We assessed the genetic relationships of R. sakejiensis using the mitochondrial cytochrome b gene. This analysis revealed this species to be phylogenetically distinct from morphologically similar congeners of the capensis, fumigatus, and ferrumequinum species groups. In fact, it does not belong to any recognised species group but rather represents a distinct evolutionary lineage – along with another African relic bat, Rhinolophus horaceki. The divergence time of R. sakejiensis from R. horaceki, its closest relative, was estimated to have occurred in the Middle Miocene, roughly at 15.3 Ma, a period of dynamic environmental changes that may have led to widely separated occurrences of various relic bat lineages.
Influence of heat input and heat exchange coefficient on temperature and stress field of a X80 steel pipeline repair-weld root pass of a type-B sleeve
Authors: Guo Lei , Wu Mingchang , Xu Yan , Wang Leilei , Yang Fengping , Bai Qiang , Feng Zhenjun , Lu Yongxin 
Published: January 2025

Abstract
The formation of the type-B sleeve repaisring root pass seriously affects the quality of in-service repair of B-type sleeve. Therefore, it is necessary to systematically study the temperature field, stress field, and deformation field of type-B sleeve repairing root pass. In this paper, a double ellipsoid heat source model is developed to investigate the weld temperature, residual stress, and deformation field characteristics in the type-B sleeve repairing root pass. The results show that the heat exchange coefficient of the inner wall of the pipeline has a relatively small impact on the penetration depth, residual stress, and deformation of type-B sleeve repairing root pass, and the weld heat input has a significant impact on the penetration depth, residual stress, and deformation of type-B sleeve repairing root pass. In a whole, when the heat input of the repairing root pass is around 0.9 KJ mm−1, a well-formed repairing root pass with moderate residual stress and minimal deformation can be obtained.
Crystal structure of cinnamoyl ferrocene, C19H16FeO
Authors: Wang Qiaru , Xu Xiaona , Du Mo , Tang Wenqiang , Liu Bin 
Published: January 2025

Abstract
C19H16FeO, orthorhombic, Pna21 (no. 33), a = 40.8379(12) Å, b = 5.7993(2) Å, c = 11.9680(3) Å, V = 2834.40(15) Å3, Z = 8, R

gt
(F) = 0.0397, wR

ref
(F
2) = 0.0834, T = 170 K. CCDC no.: 2403075.
Crystal structure of 7-(dimethylamino)-2-hydroxy-2-(trifluoromethyl)-2H-chromene-3-ethyl carboxylate, C15H16F3NO4
Authors: Yue Ruifeng , Wang Ruiying , Shu Hang , Fu Dayong , Qi Zhuanghui 
Published: January 2025

Abstract
C15H16F3NO4, triclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 6.7000(2) Å, b = 11.7844(4) Å, c = 19.3039(6) Å, α = 83.581(3)°, β = 86.015(3)°; γ = 87.713(3)°; V = 1510.14 Å3, Z = 4, R

gt
(F) = 0.0459, wR
ref(F
2) = 0.1389, T = 294.95 K.
The crystal structure of (E)-1-((3)-nitrophenyl)pyren-3-(pyren-1-yl)prop-2-en-1-one, C25H15NO3
Authors: Barrientos Claudio , Squella J. Arturo , Moris Silvana 
Published: January 2025

Abstract
C25H15NO3, triclinic, P1̄ (no. 2), a = 8.4899(3) Å, b = 10.1383(4) Å, c = 11.3806(5) Å, α = 78.373(1)°, β = 72.020(1)°, γ = 73.381(1)°, V = 885.89(6) Å3, Z = 2, R

gt
(F) = 0.0439, wR

ref
(F
2) = 0.1290, T = 296.15 K.
Medición de la calidad de servicio percibida por los contribuyentes en una entidad tributaria peruana
Authors: Sotomayor-Parian Raquel M. , Castañeda-Sulca Rosa L. , Mitma-Ramirez Carlos A. 
Published: January 2025

La calidad de los servicios en entidades estatales es un requerimiento prioritario y una obligación absoluta del gobierno, por ello, las instituciones deben de brindar servicios de calidad. Este estudio tuvo como objetivo analizar la percepción de los contribuyentes a la calidad de servicio en una entidad tributaria pública en la región de Chincha, Ica. Bajo ese enfoque, conocer la percepción del desempeño de los servicios públicos y obtener datos válidos es relevante para una calidad de servicio adecuada. La metodología fue de tipo investigación aplicada con enfoque cuali-cuantitativo, nivel descriptivo y de corte transversal; para el levantamiento de información se aplicó como técnica la encuesta y el cuestionario como instrumento, a fin de hacer medición sobre la percepción de calidad del servicio distribuido en cinco dimensiones aplicando el modelo SERVQUAL. Como resultados obtenidos se identificó que la dimensión con mayor puntaje fue elementos tangibles, con una aceptación de totalmente de acuerdo superior al 53%, asimismo, los procesos de los servicios de la SUNAT guardan relación con los parámetros de calidad del modelo SERVQUAL demostrando así la necesidad de brindar servicios de calidad al contribuyente en la SUNAT. Se concluye que, las cinco dimensiones se ubicaron en el nivel “mejor al esperado” dado que las escalas 4 y 5 corresponden a este nivel, siendo predominante la escala 5 en más del 95% de las repuestas.
Immediate outcomes of AVNeo in combination with coronary artery bypass grafting
Authors: Bazylev V. V. , Voevodin A. B. , Karnakhin V. A. , Martynov A. A. , Zhukov N. V. 
Published: January 2025

Aim. To evaluate immediate outcomes of the Ozaki procedure in patients with coronary artery bypass grafting (CABG).Material and methods. This retrospective study included 416 patients operated on at the Federal Center of Cardiovascular Surgery (Penza). The patients were divided into two groups. The first group included 139 patients who underwent the AVNeo procedure in combination with CABG. The second group included 277 patients who underwent a single AVNeo procedure.Results. The median time of cardiopulmonary bypass and myocardial ischemia in the AVNeo+CABG group was 146 (134-165) and 115 (104-125), respectively, while in the AVNeo group — 117 (102-136) and 96 (82-109), respectively. The mean aortic valve pressure gradient immediately after surgery in the AVNeo+CABG group was 5,9±3,3, while in the AVNeo group — 6,4±3,1. Mortality in the AVNeo+CABG group was 2,8% (n=4), while in the AVNeo group — 0,3% (n=1). Inhospital survival in the AVNeo+CABG group was 97,1%, while in the AVNeo group — 99,6%. In the AVNeo+CABG group, there were following death causes: perioperative myocardial infarction (n=2), pneumonia (n=1), multiple organ failure (n=1). In the AVNeo group, the cause of the only fatal outcome was multiple organ failure. Only one predictor of inhospital mortality was identified — resternotomy for bleeding. In the case of resternotomy, inhospital death risk increases by 1,3 times for each day of the postoperative period. Cardiopulmonary bypass time, myocardial infarction, and operation duration do not affect mortality. The combination of AVNeo with CABG also does not affect inhospital mortality (p=0,1).Conclusion. The combination of the AVNeo procedure with CABG is an effective and safe procedure in the immediate period.
Nocturnal hypoxemia, cardiac remodeling, and blood concentrations of fibrosis biomarkers in patients with atrial fibrillation and obstructive sleep apnea
Authors: Berdysheva V. A. , Ionin V. A. , Vakulenko A. S. , Lozovaya T. A. , Baranova E. I. 
Published: January 2025

Aim. To study cardiac remodeling, blood concentrations of fibrosis biomarkers depending on nocturnal hypoxemia (NH) in patients with atrial fibrillation (AF) and obstructive sleep apnea (OSA).Material and methods. This case-control cross-sectional comparative study included 334 subjects as follows: 122 patients with AF(+)/OSA(+), 117 patients with AF(-)/OSA(+), 95 patients with AF(+)/OSA(-). The subjects underwent respiratory monitoring during sleep and transthoracic echocardiography. The blood concentrations of profibrogenic biomarkers were determined.Results. The mean blood saturation level is lower, and the proportion of sleep time with saturation less than 90% is higher in patients with a combination of AF and OSA compared to patients without arrhythmia. The left atrial diameter, volumes and volume indices of both atria, pulmonary artery size, and pulmonary artery pressure in patients with AF combined with NH are greater than in patients with AF without NH. The blood levels of galectin-3 and growth differentiation factor-15 (GDF-15) are higher in patients with AF combined with NH than in patients with AF without NH and then in patients with NH without AF. In patients with AF in combination with OSA, an increased probability of NH is associated with a high blood concentration of GDF-15 (odds ratio =1,21, 95% confidence interval 1,001-1,34, p=0,002). NH increased the AF probability by 2,6 times (odds ratio =2,57, 95% confidence interval 1,47-4,46, p<0,001).Conclusion. AF in patients with OSA in combination with NH is characterized by more significant cardiac remodeling (greater left and right atrial dilation), higher pulmonary hypertension and higher blood levels of profibrogenic factors (galectin-3 and GDF-15) than in patients without NH.
Preposition omission under English pseudogapping
Authors: Nykiel Joanna 
Published: January 2025

This paper maps out patterns of preposition omission under English pseudogapping, that is, outside of the usual environment in which they have previously been explored. It’s possible to drop prepositions in certain environments under clausal ellipsis (sluicing and fragments), but doing so leads to a (slight) degradation in acceptability in the majority of languages except present-day English. Various accounts have been offered to explain this degradation, including a processing-based one. I test the latter’s ability to serve as a fully generalizable mechanism with cross-constructional and crosslinguistic coverage that can complement existing theories of ellipsis. My corpus results are that preposition omission is (i) much rarer than retention of prepositions, closely tracking the crosslinguistic default we see in clausal ellipsis, and (ii) sensitive to the same two efficiency principles that dictate how processing pressures on the parser can be eased under clausal ellipsis. I propose that the bias against preposition omission emerges as a preference for structural parallelism that impacts pseudogapping differently than clausal ellipsis. My overall conclusion is that a fully generalizable processing-based explanation for preposition omission is well supported by the current data, and I close by formulating a set of testable crosslinguistic predictions that follow from this explanation.
PROBLEMATIKA MEMBACA PERMULAAN SISWA KELAS 2 SDN 1 GENENGAN
Authors: Zuhro Mufidatuz , Thohir M.  Anas , Mas’ula Siti 
Published: January 2025

Abstrak : Kemampuan membaca siswa sering menjadi problematika dalam proses pembelajaran. Berdasarkan wawancara dan observasi yang dilakukan di kelas 2 SDN 1 Genengan, ditemukan problematika membaca permulaan pada siswa kelas 2. Penelitian ini bertujuan untuk mengetahui problematika seperti apa yang ada pada siswa kelas 2 dan upaya apa yang sudah dilakukan untuk meningkatkan kemampuan membaca permulaan pada siswa. Metode yang digunakan pada penelitian ini adalah kualitatif deskriptif. Metode ini menggunakan angket, wawancaa, observasi, dan dokumentasi untuk mengumpulkan data. Analisis data pada metode penelitian kualitatif ada tiga prosedur yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian ini ditemukan bahwa ada 3 orang anak yang mengalami problematika membaca permulaan. Problematika itu diantaranya kurang lancar dalam membedakan bentuk dan bunyi huruf, mengganti dan menggilangkan kata pada kalimat yang dibaca, membaca dengan tersendat-sendat, memenggal atau mengeja kata tidak tepat, membaca dengan menebak kata, mengulang-ngulang kata, tidak lancar dalam melafalkan kata, tidak lancar dalam melafalkan kata yang berimbuhan. Upaya yang dilakukan guru untuk menangani siswa yang memiliki problematika membaca permulaan dengan cara memberikan jam tambahan membaca, menggunakan media khusus untuk menarik minat siswa dalam belajar membaca, memberikan reward apabila siswa mengalami kemajuan dalam membacanya, guru selalu mengkomunikasikan mengenai perkembangan membaca siswa kepada orang tua.
Developing RENATAMA (Reyog Kendang & Etnomathematics) Based on Digital Board Game with Cognitive Psychology Content to Improve Numeracy Literacy
Authors: Dirgantoro Ajar , Purwananti Yepi Sedya , Hartanto Setyo 
Published: January 2025

Mathematical literacy plays an important role in using mathematics to solve real problems. Based on the PISA results, Indonesia's mathematical literacy is currently ranked in the bottom 15, although in general it has increased compared to the previous year. This is in line with the results of the Minimum Competency Assessment in Tulungagung Regency which shows that numeracy literacy skills are still low. This research aims to: (1) to develop an android application as a learning media in the form of digital board game based on PBL with cognitive psychology content to improve Numeracy Literacy, and (2) to know the feasibility level of the android application as a learning media based on digital board game based on PBL with cognitive psychology content to improve Numeracy Literacy. The application is collaborated with the local cultural content of Reyog Kendang and is acronymised RENATAMA. This research uses the Research and Development (R&D) method using the ADDIE development model. The research subjects included 1 media expert, 1 material expert, and seventh grade students at SMPN 1 Sumbergempol and SMPN 3 Tulungagung. The data collected in the form of qualitative data in the form of interview results and quantitative data in the form of a percentage of feasibility test results. The questionnaire used in this study has aspects that are in accordance with the ISO / IEC 9126 model. The results of this study, show: (1) the RENATAMA (Reyog Kendang & Etnomathematics) based on Digital Board Game with Cognitive Psychology content to improve Numeracy Literacy, and (2) the developed application is declared feasible to use. Feasibility is obtained from the results of the feasibility test with details: (1) Media experts with a percentage of 91.5%; (2) Material experts with a percentage of 96%; (3) Small group test of 88.8%; and (4. Large group test with a percentage of 89%. From the results of this study, it can be categorized as ‘Very Feasible’. So, the android application that has been developed is very feasible to use as a learning media. The advantages are through the use of technology compared to conventional ethnomathematics, originality, adoption of assets and integrated content of culture with mathematics, partnership with regular evaluation, involvement of lecturers and students to encourage the achievement of IKU-PT and being able to motivate themselves according to the goal of increasing numeracy literacy. The novelty is in combining cultural exploration of reyog kendang and PBL-based mathematics with a cognitive psychology approach to improve numeracy literacy, as well as pride in local culture through the RENATAMA.
Abordaje del Ciberbullying y Grooming en adolescentes mexicanos: Una revisión sistemática de la literatura
Authors: Sánchez-Domínguez Juan Pablo , Magaña Raymundo Luis 
Published: January 2025

Given the lack of systematic reviews in Mexico that explore the phenomena of Cyberbullying and Grooming, types of digital violence that mainly affect children and adolescents, this research was conducted with the aim of identifying the approach that has been given to the phenomenon within the country between 2000-2022. The PRISMA method was used and publications indexed in the Open Access databases SciELO, Redalyc, Dialnet, ScienceDirect and PubMed were consulted. Thirty-five studies were analyzed between 2000-2022, finding a high prevalence of quantitative works that mainly explore the nature and dynamics of Cyberbullying; most of the studies are concentrated in the center-north of the country, with more than two authors per article. The almost null research on Grooming in Mexico stands out, as well as studies on validation of instruments and intervention programs against Cyberbullying; in future reviews it is suggested to explore non-indexed sources that broaden the scope that has been had of the phenomenon.
A Prospective Study on Implementation of Long Term Follow-up of Cured Tuberculosis Patients and Barriers Faced by Health Care Workers at Ahmedabad City, Gujarat: A Mixed Method Approach
Authors: Shah Tejas , Shah Venu , Dave Viral 
Published: January 2025

Background: Tuberculosis (TB) remains a major public health challenge in India. Efforts outlined in the National Strategic Plan (2017-2025) are committed to achieve targets towards eliminating TB. Early identification of recurrence among cured TB cases is a crucial strategy towards this goal. However, there are limited data on the implementation of long-term follow-up for cured cases. Methods: A prospective mixed-method study was conducted to evaluate the implementation of long-term follow-up strategy among 180 cured TB patients. Quantitative assessment involved tracking follow-up visits at 6, 12, 18, and 24 months post-treatment success. Moreover, Focus Group Discussions (FGDs) with 46 TB Health Visitors (TB HVs) were conducted to identify barriers to the implementation of long-term follow-up strategies for cured TB cases.
Results: Quantitative analysis revealed a decline in follow-up visits over time, and only 16.89% of patients were followed up by TB HVs during fourth visit at 24 months post-treatment. Recurrent TB was identified in 22 cases, 13.7% of which were not followed up by health workers. Qualitative analysis highlighted patient-related factors like loss to follow-up due to migration and denial of sputum testing. Health workers cited workload issues and inadequate financial incentives as barriers to implementation.
Conclusion: The study underscores challenges in implementing long-term follow-up strategies for cured TB patients in India. Addressing barriers such as loss to follow-up and workload issues among health workers is crucial for improving recurrence detection and management. Efforts to enhance program effectiveness must prioritize overcoming these barriers to achieve the goal of TB elimination by 2025.
Diagnostic of Fatty Acid Extracted from Peganum Harmala Seed and Effect Study on The Growth the Leishmania Tropica Promastigotes In Vitro
Authors: Ayad Faris Nahedh 
Published: January 2025

Fatty acids were isolated from the seeds of Peganum harmala, a legume, with petroleum ether. The fatty acids were analyzed using HPLC and were determined to comprise 48.9% Hexadecanoic acid, 2.3% Heptadecanoic acid, 13.7% Octadecanoic acid, and 2.8% Tetradecanoic acid. The current investigation demonstrated that the fatty acids extracted from the seeds of Peganum harmala are more advantageous. The current study's data revealed significant differences p<0.05 across various doses of the petroleum ether oil extract of Peganum harmala and differing exposure durations. The study's findings indicated that the 4 mg/dl dose of the oil extract exhibited the highest inhibitory activity against Leishmania tropica at 24 h 22.50 ± 1.04, 48 h 41.50 ± 1.19, 72 h 64.75 ± 2.66, and 96 h 101.25 ± 0.25. Conversely, the lowest inhibitory dose of 1 mg/dl was recorded at 24 h 66.00 ± 2.20, 48 h 108.75 ± 1.65, 72 h 154.50 ± 1.71, and 96 h 207.00 ± 1.91, in comparison to the control groups 75.25 ± 0.85, 156.00 ± 1.83, 320.00 ± 2.16, 522.50 ± 9.31respectively.
Fatty acids exhibited a beneficial effect in suppressing the proliferation of the Leishmaniasis cutanea parasite, namely Leishmania tropica promastigotes, ex vivo.
This research presents a possible alternative to pharmaceutical substances, such as streptolyticum, utilized in treating the parasite responsible for cutaneous Leishmaniasis.
This study concludes that fatty acids extracted from harmful plant seeds enhance the parasiticidal efficacy with increasing concentration, and prolonged treatment duration correlates with a more significant percentage of parasite elimination.