bluuebunny/crossref_metadata_2025_split huggingface dataset:
LLT polynomials in the Schiffmann algebra
Authors: Blasiak Jonah , Haiman Mark , Morse Jennifer , Pun Anna , Seelinger George H. 
Published: April 2024

Abstract
We identify certain combinatorially defined rational functions which, under the shuffle to Schiffmann algebra isomorphism, map to LLT polynomials in any of the distinguished copies

Λ
⁢

(

X

m
,
n

)

⊂
E

\Lambda(X^{m{,}n})\subset\mathcal{E}

of the algebra of symmetric functions embedded in the elliptic Hall algebra ℰ of Burban and Schiffmann.
As a corollary, we deduce an explicit raising operator formula for the ∇ operator applied to any LLT polynomial.
In particular, we obtain a formula for

∇
m

s
λ

\nabla^{m}s_{\lambda}

which serves as a starting point for our proof of the Loehr–Warrington conjecture in a companion paper to this one.
On κ-solutions and\break canonical neighborhoods in 4d Ricci flow
Authors: Haslhofer Robert 
Published: April 2024

Abstract
We introduce a classification conjecture for κ-solutions in 4d Ricci flow. Our conjectured list
includes known examples from the literature, but also a new one-parameter family of

ℤ
2
2

×

O
3

{\mathbb{Z}_{2}^{2}\times\mathrm{O}_{3}}

-symmetric bubble-sheet ovals that we construct. We observe that some special cases of the conjecture follow from recent results in the literature. We also introduce a stronger variant of the classification conjecture for ancient asymptotically cylindrical 4d Ricci flows, which does not assume smoothness and nonnegative curvature operator a priori. Assuming this stronger variant holds true, we establish a canonical neighborhood theorem for 4d Ricci flow through cylindrical singularities, which shares some elements in common with Perelman’s canonical neighborhood theorem for 3d Ricci flow as well as the mean-convex neighborhood theorem for mean curvature flow through neck-singularities. Finally, we argue that quotient-necks lead to new phenomena, and sketch an example of non-uniqueness for 4d Ricci flow through singularities.
Cohomological properties of maximal pro-p Galois groups that are preserved under profinite completion
Authors: Bar-On Tamar 
Published: April 2024

Abstract
Let p be a prime number. One of the most difficult and important questions in Galois theory these days is determining which pro-p groups can occur as maximal pro-p Galois groups. Some restrictions of the structure of maximal pro-p Galois groups are already known, and therefore, the families of all pro-p groups satisfying these restrictions are in the center of the research. In the current paper we deal with three of these families: The family of all pro-p groups which satisfy hereditarily the n-vanishing Massey product property, the family of 1-cyclotomic oriented pro-p groups, and the family of pro-p groups that are hereditarily of p-absolute Galois type. We show that all these families are closed under taking profinite completion of each order.
Deviation probabilities for extremal eigenvalues of large Chiral non-Hermitian random matrices
Authors: Ma Yutao , Wang Siyu 
Published: April 2024

Abstract
Consider the chiral non-Hermitian random matrix ensemble with parameters n and v, and let

(

ζ
i

)

1
≤
i
≤
n

{(\zeta_{i})_{1\leq i\leq n}}

be its n eigenvalues with positive x-coordinate. In this paper, we establish deviation probabilities and moderate deviation probabilities for the spectral radius

(

n

n
+
v

)

1
2

⁢

max

1
≤
i
≤
n

⁡

|

ζ
i

|

2

{(\frac{n}{n+v})^{\frac{1}{2}}\max_{1\leq i\leq n}|\zeta_{i}|^{2}}

, as well as

(

n

n
+
v

)

1
2

⁢

min

1
≤
i
≤
n

⁡

|

ζ
i

|

2

{(\frac{n}{n+v})^{\frac{1}{2}}\min_{1\leq i\leq n}|\zeta_{i}|^{2}}

.
Weighted bilinear multiplier theorems in Dunkl setting via singular integrals
Authors: Mukherjee Suman , Parui Sanjay 
Published: April 2024

Abstract
The purpose of this article is to present one and two-weight inequalities for bilinear multiplier operators in Dunkl setting with multiple Muckenhoupt weights.
In order to do so, new results regarding Littlewood–Paley type theorems and weighted inequalities for multilinear Calderón–Zygmund operators in Dunkl setting are also proved.
Statistically convergent difference sequences of bi-complex numbers
Authors: Bera Subhajit , Tripathy Binod Chandra 
Published: April 2024

Abstract
In this article we introduce the notion of statistical convergence difference sequences of bi-complex numbers. Some properties of these sequence spaces like BC-module, Banach BC-module, BC-balanced set, BC-convex set, solidness, and symetricity are studied.
On the Laplace transform
Authors: Ramm Alexander G. 
Published: April 2024

Abstract
Sufficient conditions are given for a function

F
⁢

(
p
)

{F(p)}

to be the Laplace transform of a function

f
⁢

(
t
)

{f(t)}

or a distribution f. No assumption on f is given a priori.
It is not even assumed that

f
=
0

{f=0}

for

t
<
0

{t<0}

.
Inverse spectral problem for differential pencils with a frozen argument
Authors: Hu Yi-Teng , Sat Murat 
Published: April 2024

Abstract
This paper deals with differential pencils possessing a term depending on the unknown function with a fixed argument.
We deduce the so called main equation together with its fine structure for the spectral problem. Then, according to the boundary conditions and the position of argument, we describe two cases: degenerate and non-degenerate. For these two cases, the uniqueness of inverse spectral problem is studied and a constructive procedure for reconstructing the potentials along with necessary and sufficient conditions of the inverse problem solvability are obtained.
M. M. Lavrentiev-type systems and reconstructing parameters of viscoelastic media
Authors: Kokurin Mikhail Yu. 
Published: April 2024

Abstract
We consider a nonlinear coefficient inverse problem of reconstructing the density and the memory matrix of a viscoelastic medium by probing the medium with a family of wave fields excited by moment tensor point sources. A spatially non-overdetermined formulation is investigated, in which the manifolds of point sources and detectors do not coincide and have a total dimension equal to three. The requirements for these manifolds are established to ensure the unique solvability of the studied inverse problem. The results are achieved by reducing the problem to a chain of connected systems of linear integral equations of the M. M. Lavrentiev type.
A national survey on current practice of ultrasound in labor ward
Authors: Mappa Ilenia , Masturzo Bianca , Carbone Ilma Floriana , Kiener Ariane , Maruotti Giuseppe Maria , Pintucci Armando , Suprani Alice , Visentin Silvia , Ghi Tullio , Rizzo Giuseppe 
Published: April 2024

Abstract

Objectives
Use of ultrasonography has been suggested as an accurate adjunct to clinical evaluation of fetal position and station during labor. There are no available reports concerning its actual use in delivery wards. The aim of this survey was to evaluate the current practice regarding the use of ultrasonography during labor.

Methods
A questionnaire was sent to members of the Italian Society of Ultrasound in Obstetrics and Gynecology employed in delivery wards. The qFeuestionnaire was made up of 22 questions evaluating participant characteristics and the current use of ultrasound in labor in their hospital of employment. The answers were grouped according to participant characteristics.

Results
A total of 200 participants replied. Ultrasound was considered useful before an operative vaginal delivery by 59.6 % of respondents, while 51.8 and 52.5 % considered it useful in the management of prolonged first and second stages of labor, respectively. The major indication for ultrasound use during labor was the assessment of fetal occiput position. The major difficulties in its application were the perceived lack of training and the complexity of the ultrasound equipment use. Participants that reported fewer difficulties were those employed in hospitals with a higher number of deliveries or having delivery units with more years of experience using ultrasound in labor, or those who had attended specific training courses.

Conclusions
The results indicate that, despite the reported evidence of a higher accuracy of ultrasound compared to clinical evaluation in assessing fetal position and station, its use is still limited, even amongst maternal-fetal medicine practitioners specialized in ultrasonography.
Da muss erst mal Gras drüber wachsen
Authors: Zinesi Alice , Laurino Gianfiore 
Published: April 2024

Abstract

On the different meanings and syntactic functions of da based on a German-Italian parallel corpus. This study investigates the use of the German word da and its equivalents in Italian. After assessing the academic literature regarding the various meanings of da in the German language, the research focuses on the analysis of da translations available in several examples taken from InterCorp. The findings are consistent with previous research, revealing that da can express causality, time, location, neutrality, contrast, and deixis. Additionally, it is observed that translators often use creative solutions. Also, some translations are not found in dictionaries, but align perfectly with the source text, indicating a need for more linguistic research on Italian-German translations, as well as the necessity to always adapt rendering to the specific context.
New generation steels for light weight vehicle safety related applications
Authors: Doruk Emre , Demir Süleyman 
Published: April 2024

Abstract
Vehicle lightening efforts, low fuel consumption and low CO2 emission have become an important target in the automotive industry without compromising safety and comfort. By reducing vehicle weights, fuel consumption and CO2 emissions are significantly reduced. In this context, the next generation steels are constantly being developed in terms of high strength, forming, weld ability, low cost in matters such as vehicle lightening and impact safety. In this study, side-impact performance of the next generation steels that can be used for the body B-Pillar part as part of vehicle lightening was examined. In finite element analysis, Usibor 1500, TWIP 980, TRIP 800, DP 1000 materials and three different metal sheet thicknesses (1.3–1.5–1.8 mm) were used for the B-Pillar part. All results obtained were compared in terms of energy absorption ability, formability, weld ability, cost and weight.
Effect of water immersion on shear strength of epoxy adhesive filled with graphene nanoplatelets
Authors: Jia Zhemin , Liu Qian , Zhang Zhicheng 
Published: April 2024

Abstract
Adhesive bonds are frequently used in industries such as aerospace, automotive, and civil engineering due to their ability to reduce damage to the adherend and their lightweight. However, their application is restricted by their inadequate durability and reliability in hostile environments. Graphene nanoplatelets (GNPs) are employed to enhance epoxy adhesives in this article. The thick adherend shear test is utilized to examine how the shear properties change with different water ageing times. Before exposure to water ageing conditions, GNP-reinforced adhesives exhibit a 3.51% increase compared with neat epoxy at a GNP content of 0.25 wt%. However, after 56 days of water ageing, the increase in shear strength is found to be 13.79%. This suggests that the well-dispersed GNP can reduce the degradation rate in shear properties by half, from 16.71 to 8.44%, at a GNP content of 0.25 wt%. Additionally, as water ageing time increases, the positive influence of GNP on shear properties becomes more evident. The addition of GNP delays the degradation of shear properties caused by water ageing conditions. The effect of GNP does not improve with higher GNP content. When the GNP contents increase to 1 wt%, the shear strength of the GNP-reinforced adhesive decreases compared to neat epoxy.
Simple dynamic cell culture system reduces recording noise in microelectrode array recordings
Authors: Hoven Darius , Inaoka Misaki , McCoy Reece , Withers Aimee , Owens Róisín M. , Malliaras George G. 
Published: April 2024

AbstractMicroelectrode arrays (MEAs) have applications in drug discovery, toxicology, and basic research. They measure the electrophysiological response of tissue cultures to quantify changes upon exposure to biochemical stimuli. Unfortunately, manual addition of chemicals introduces significant noise in the recordings. Here, we report a simple-to-fabricate fluidic system that addresses this issue. We show that cell cultures can be successfully established in the fluidic compartment under continuous flow conditions and that the addition of chemicals introduces minimal noise in the recordings. This dynamic cell culture system represents an improvement over traditional tissue culture wells used in MEAs, facilitating electrophysiology measurements.
Graphical abstract
Prediction of in-hospital mortality in patients aged 75 years and older with acute ST-segment elevation myocardial infarction using logistic regression and classification tree
Authors: Pereverzeva K. G. , Yakushin S. S. 
Published: April 2024

Aim. To study risk factors for in-hospital mortality in patients with acute myocardial infarction (MI) with ST-segment elevation (STEMI) aged ≥75 years.Material and methods. This retrospective analysis analyzed medical records of 174 patients aged ≥75 years hospitalized at the regional cardiology clinic due to STEMI in 2020-2021. There were 52 (29,9%) men. The median age for all patients was 81 [79; 85] year.Results. Inhospital mortality was 24,1%. Binary logistic regression revealed the following factors increasing the risk of inhospital mortality: cardiogenic shock (CS) — odds ratio (OR) 39,04; 95% confidence interval (CI): 8,87-171,74 (p<0,001); ventricular tachycardia (VT) — OR=60,52; 95% CI: 5,21-703,45 (p=0,001); white blood cell (WBC) count — for each increase by 1×109/l — OR=1,15; 95% CI: 1,05-1,26 (p=0,002). At the same time, history of heart failure (CHF) reduced the death risk (OR=0,04; 95% CI: 0,009-0,21 (p<0,001)). Classification tree found that 100% mortality was predicted in patients with CS and without diabetes and a history of MI and in patients with pulmonary edema and without CS, VT and HF. Mortality of 83,3% was predicted in patients without CS and without VT with a history of HF, WBC count ≥14,5×109/L and body mass index ≤23,7 kg/m2. In addition, mortality of 75,0% was predicted in patients without CS, but with VT, as well as in patients with CS without diabetes and with a history of MI. In patients with CABG and diabetes, the predicted mortality rate was 50,0%.Conclusion. The strongest factors associated with the risk of inhospital death were CS, VT, and high WBC count. The positive effect on the prognosis of pre-existing diseases, in particular HF, is apparently associated with the protective effect of previously taken therapy. This assumption needs to be confirmed based on prospective studies.
Role of cardiac magnetic resonance imaging in assessing the risk of various myocardial remodeling types in left ventricular noncompaction: genetic analysis data
Authors: Mershina E. A. , Filatova D. A. , Myasnikov R. P. , Kulikova O. V. , Meshkov A. N. , Kiseleva A. V. , Sinitsyn V. E. , Kharlap M. S. 
Published: April 2024

Aim. To analyze contrast-enhanced cardiac magnetic resonance imaging (MRI) in patients with phenotypic manifestations of left ventricular non-compaction (LVNC) and related genetic mutations, as well as to determine the relationship between mutations and types of left ventricular (LV) remodeling and with a number of other morphological and functional cardiac parameters.Material and methods. From the registry of patients with LVNC and their relatives, patients with morphological signs of LVNC and 4 related mutations (MYH7, MYBPC3, TTN, and desmin genes (DES, DSG2, DSP and DSC2)). All patients underwent contrast-enhanced cardiac MRI, based on which the type of LV remodeling was determined.Results. The study included 44 patients who, according to genetic analysis, had mutations in sarcomeric genes responsible for LVNC development. In each patient, the type of LV remodeling was determined based on cardiac MRI results. We found that if patients with LVNC have mutations in the MYBPC3 and TTN genes, the chance of LV dilatation remodeling is significantly higher. On the contrary, in the presence of a DES gene mutation, the probability of this LV remodeling is lower, and milder morphological manifestations of LVNC are noted.Conclusion. The combination of cardiac MRI data and genetic analysis improves the morphological and functional stratification of patients with LVNC.
Stimulating Aerobic Energy Supply Reactions of Athletes in Rugby Union
Authors: Kvasnytsya Oleh , Tyshchenko Valeria , Hlukhov Ivan , Drobot Kateryna , Khimich Vita , Mozoliuk Oleksandr , Skrypchenko Iryna 
Published: April 2024

Objectives. The study purpose was to evaluate the effectiveness of an experimental program of training means aimed at stimulating reactions of aerobic energy supply of athletes who are part of Ukraine national rugby union team.
Material and methods. The athletes of the Ukrainian national rugby union team were divided into two homogeneous groups (experimental and control) consisting of 15 individuals. The experimental group underwent a specialized program aimed at developing aerobic energy supply, whereas the control group followed a standard training program. The object of study focused on the training process of Ukraine national rugby union team.
Results. The results of testing rugby players in the experimental group demonstrated reliable changes in reactions of aerobic energy supply under the influence of a program of special training sessions. The most significant alterations were noted in the indicators of kinetics and stability of reactions. The indicators of O2 consumption and pulmonary ventilation in the intensity zone of anaerobic metabolism threshold increased significantly. There was a tendency to increase indicators characterizing the power of the respiratory response (max VE), in particular under conditions of growing fatigue (% excess VE). However, there were no significant changes in indicators of aerobic capacities components in the athletes’ control group.
Conclusions. We believe that the mentioned indicators mostly reflect specialized manifestations of rugby players’ aerobic capacities and impact the increase of athletes’ special functional capabilities. This has been confirmed by the results of the analysis of urgent adaptive responses registered in model conditions of competition activity. As a result of the implementation of the specified experimental programme during the preparation process, the Ukrainian national team achieved 2nd place at the European Rugby Union Championship in the Trophy division of the 2022-2023 season.
Application of Modern Pedagogical Technologies in Higher Education Institutions
Authors: Власова И.В. 
Published: April 2024

Рассматриваются различные позиции отечественных ученых по определению понятия «педагогическая технология». Акцентируется внимание на том, что современное развитие педагогических технологий в образовании обусловлено рядом обстоятельств, одним из которых является модернизация педагогического процесса. В статье указываются конкретные причины, влияющие на современное развитие технологий в образовании и науке. Подчеркивается мысль о том, что современный технологический уровень образования в высшей школе – это уникальный результат интеграции науки, искусства, методологии и педагогической практики в единый комплекс. Сформулированы основные характеристики педагогических технологий и конкретные требования к использованию современных педагогических технологий в высшем образовании.
Since there is no unity in pedagogical science and practice in understanding of pedagogical technologies, this article examines different positions of domestic scientists on the definition of the concept “pedagogical technology”. In the course of the research, the author focuses on the fact that the modern development of pedagogical technologies in education is caused by a number of circumstances, one of which is the modernization of the pedagogical process. This article identifies specific reasons that influence the current development of technology in education and science. The article emphasizes the idea that the modern technological level of education in higher education is a unique fact of integration of science, art, methodology and teaching practice in a single set. In the conclusion the author formulates the main characteristics of pedagogical technologies and specific requirements for the use of modern pedagogical technologies in higher education institutions.
Technology for Developing a Module for Additional Education for Teachers “Psychological Barriers to Designing a Personalized Educational Space”
Authors: Подымов Н.А. , Подымова Л.С. 
Published: April 2024

Обоснована важность обучения педагогов технологии проектирования персонализированного образовательного пространства. Рассмотрены этапы и содержание технологии проектирования педагогической деятельности в данном пространстве. Обозначены и описаны психологические барьеры педагогов, работающих в персонализированном образовательном пространстве.
The importance of teaching teachers the technology of designing a personalized educational space is substantiated. The stages and content of the technology for designing pedagogical activities in a given space are considered. The psychological barriers of teachers working in a personalized educational space are identified and described.
Predictors of Adaptability of Communicative and Personal Development of a Future Teacher at the Stage of Professional Training
Authors: Черняева А.В. , Шахнубарян А.К. 
Published: April 2024

Рассмотрены основные компоненты коммуникативно-личностного развития студентов. Уточнена сущность феномена «предиктор» применительно к вопросу коммуникативно-личностного развития будущих педагогов. Описан процесс становления целостного коммуникативного облика личности будущего педагога, основанный на анализе ценностных ориентиров и временной перспективы личности студентов. Выявлены предикторы ценностных, временных и коммуникативных ориентаций личности студентов педагогической сферы в системе высшего образования. Сделан вывод о том, что повышение эффективности учебной и профессиональной деятельности будущих педагогов определено влиянием предикторов адаптивности, способствующих коммуникативно-личностному развитию студентов в профессиональной подготовке.
Some basic components of the communicative and personal development of students are considered. The essence of the “predictor” phenomenon has been clarified in relation to the issue of communicative and personal development of future teachers. The process of formation of a holistic communicative personality of a future teacher is described, based on an analysis of value orientations and the time perspective of students’ personality. Predictors of value, time and communicative orientations of the personality of pedagogical students in the higher education system have been identified. It is concluded that a possible increase in the effectiveness of educational and professional activities of future teachers is determined by the influence of predictors of adaptability that contribute to the communicative and personal development of students in professional training.