bluuebunny/crossref_metadata_2025 huggingface dataset:
Low-fat cheese ameliorates glucose intolerance and normalizes insulin secretion in a rat model of type 2 diabetes by promoting β-cell recovery
Authors: Hanning Anik R.Z. , Hassanabad Mortaza Fatehi , Hashemi Zohre , Wang Xiaofeng , Chan Catherine B.
Published: April 2024

We aimed to determine if cheese could reduce glucose intolerance in aged rats with overt type 2 diabetes (T2D). Male Sprague-Dawley rats treated with high-fat diet (HFD) and streptozotocin (STZ) to elicit T2D were hyperglycemic. One week after STZ injection, low-fat (LOW) or regular-fat (REG) cheese was provided for 5 weeks and compared with T2D and low-fat diet reference (REF) groups. Food intake and weight gain were similar in all groups. Oral glucose tolerance tests revealed glucose intolerance in T2D rats that was partially ameliorated by LOW but not REG. Insulin secretion during the oral glucose tolerance test was impaired in T2D and REG at 10 min ( p < 0.05) but the iAUC was highly variable in all groups and statistical differences were not detected ( p > 0.05). β-cell mass and pancreatic insulin content in T2D and REG were 50% lower than REF ( p < 0.05), whereas LOW was not significantly different. Although isolated islets from all groups responded to glucose, the absolute amount of insulin secreted by T2D and REG was markedly reduced compared with REF, while LOW islets had relatively normal secretion. In conclusion, LOW but not REG cheese enhanced β-cell recovery from HFD/STZ treatment that led to amelioration of glucose tolerance within 5 weeks.
Unraveling the molecular landscape of kAE1: a narrative review
Authors: Mungara Priyanka , Waiss Moubarak , Hartwig Sunny , Burger Dylan , Cordat Emmanuelle
Published: April 2024

Kidney anion exchanger 1 (kAE1) is an isoform of the AE1 protein encoded by the SLC4A1 gene. It is a basolateral membrane protein expressed by α-intercalated cells in the connecting tubules and collecting duct of the kidney. Its main function is to exchange bicarbonate and chloride ions between the blood and urine to maintain blood pH at physiological threshold. The kAE1 protein undergoes multiple post-translational modifications such as phosphorylation and ubiquitination and interacts with many different proteins such as claudin-4 and carbonic anhydrase II. Mutations in the gene may lead to the development of distal renal tubular acidosis, characterized by the failure to acidify the urine, which may result in nephrocalcinosis and in more severe cases, renal failure. In this review, we discuss the structure and function of kAE1, its post-translational modifications, and protein–protein interactions. Finally, we discuss insights gained from the study of kAE1 mutations in humans and in mice.
The effect of four tillage systems on agronomic properties and soil health indicators in southern Manitoba
Authors: Crittenden Stephen , Cavers Curtis , Xing Zisheng
Published: April 2024

Soil health encompasses the collective functioning of chemical, physical, and biological properties in soil. The extent to which soil management affects soil health and the links with agronomic outcomes remain unclear. This project aimed to understand the interrelations of tillage systems, soil health, and agronomic properties in Portage la Prairie, MB, Canada. Tillage systems were cultivation, deep tillage, raised beds, and vertical tillage. Soybean ( Glycine max (L.) Merr), corn ( Zea mays L.), and canola ( Brassica napus L.) were all grown in 2020, 2021, and 2022. Crop yield, seed protein content, and seed oil content were measured each year. Soil samples were taken in spring 2021, fall 2021, and fall 2022 and analyzed for nitrate-N, ammonium-N, total N, ACE protein, water extractable organic N, water extractable total N, water extractable ammonium N, soil organic matter, soil organic carbon, calcium carbonate equivalent, CO2 burst, permanganate oxidizable carbon, water extractable organic C, pH, salts, Olsen P, K, S, sand, silt, and clay. Tillage system had a significant impact on agronomic properties in seven crop by sampling combinations. Tillage system effected soil nitrate-N concentration at five crop by sampling combinations, three more than any other soil property. Soybean agronomic properties correlated with soil health indicators more frequently than for corn and canola. This suggests that the utility of soil health indicators may be crop specific. Further research is needed to understand the mechanisms underpinning the ability of soil health indicators to predict agronomic outcomes and to benchmark soil health indicator values with time.
Investigation of transport properties of graphene Dirac fluid by holographic two-current axion coupling model
Authors: Liu Cai-e , Zhang Shao-guang
Published: April 2024

Recently, there has been great interest in the phenomenon of severe violation of the Wiedemann–Franz law in graphene Dirac fluids around 75 K, due to the strong coupling relativistic plasma near the neutral point, where traditional perturbation theory fails. To explain this phenomenon, this article proposes a holographic dual two-current axion coupling model, describing the interaction between electrons and holes in graphene near the charge neutrality point (CNP) and revealing the related physical mechanism. The study shows that the holographic two-current model aligns with experimental results at 100 $$\upmu $$
μ
m$$^{-2}$$

-
2

, and correctly predicts conductivity as temperature increases. Additionally, the article explores the behavior of $$\beta +\gamma $$

β
+
γ

and its impact on conductivity and thermal conductivity. The results suggest a frictional effect between electrons and holes. Consequently, this study provides us with a clearer understanding of the properties of graphene Dirac fluids and further confirms the reliability of the holographic duality method.
A macroscopic model of mixed traffic flow considering the characteristics of the vicinity of traffic signals from CPS perspective
Authors: Wang Zhe , Liao Xiaoyong , Sun Dihua , Wang Rongbin , Wu Xiao
Published: April 2024

To enhance the efficiency and stability of traffic flow in the vicinity of traffic signals under mixed traffic, a macroscopic model considering the characteristics of the vicinity of traffic signals is proposed from the perspective of cyber-physical systems (CPS). In this model, the effects of traffic lights and vehicle lane changing behavior are analyzed. Among them, the remaining time of the signal light, the distance between the vehicle and the signal light, and the urgency of lane change are considered to build a macro model. Finally, the simulation results show that compared with the traditional macroscopic model, the proposed model can improve the stability of traffic flow in the vicinity of traffic signals and effectively alleviate traffic congestion.
Homotopy analysis method for solving the coupled differential equations: A comparative study
Authors: Vahidi J.
Published: April 2024

In this paper, the application of the HAM-Padé technique for solving a system of differential equations is investigated. This method is a combination of the homotopy analysis method (HAM) and Padé approximation. The equations under consideration are the governing equations of an important physical problem that is also widely used in engineering. This study is a comparative research so that after solving the equations, the solutions obtained from the HAM-Padé method will be compared with the outcomes of the three previous studies. The comparison showed that the HAM-Padé solutions have an interesting agreement with the previous works and have good accuracy.
LEFB: A new low-light image contrast enhancement algorithm
Authors: Wang Bin , Zhang Bini , Sheng Jinfang
Published: April 2024

Low-light images are challenging for both human observation and computer vision algorithms due to low visibility. To address this issue, various image enhancement techniques such as dehazing, histogram equalization, and neural network-based methods have been proposed. However, most existing methods often suffer from the problems of insufficient contrast and over-enhancement while enhancing the brightness, which not only affects the visual quality of images but also adversely impacts their subsequent analysis and processing. To tackle these problems, this paper proposes a low-light image enhancement method called LEFB. Specifically, the low-light image is first transformed into the LAB color space, and the L channel controlling brightness is enhanced using a local contrast enhancement algorithm. Then, the enhanced image is further enhanced using an exposure fusion-based contrast enhancement algorithm, and finally, a bilateral filtering function is applied to reduce image edge blurriness. Experimental evaluations are conducted on real datasets with four comparison algorithms. The results demonstrate that the proposed method has superior performance in enhancing low-light images, effectively addressing problems of insufficient contrast and over-enhancement, while preserving fine details and texture information, resulting in more natural and realistic enhanced images.
CHICAGO CLIMATE EXCHANGE (CCX): THE ORIGIN AND EVOLUTION OF VOLUNTARY EFFORTS TO ESTABLISH CARBON MARKETS
Authors: SANDOR RICHARD L. , DIPERNA PAULA
Published: April 2024

The Chicago Climate Exchange (CCX), which operated from its launch in 2003 to its sale to the Intercontinental Exchange (ICE) in 2010, was the world’s first and still only cap-and-trade system covering all six major greenhouse gases (GHGs) Membership in CCX was voluntary, but all emissions reduction commitments, auditing and trading rules were mandatory via a legally binding civil contract, a first in history. The goal was to use a market-based solution to reduce carbon emissions at the lowest possible cost, and CCX drew more than 400 members to its system at the time when there were no mandatory greenhouse gas reduction policies in place in the United States or abroad. The question is why did major emitters, market participants, cities, states and other entities choose to act to use emissions trading to mitigate climate change when there was no requirement for them to do so? This paper examines the question, suggesting that the CCX model embodied aspects of theories put forward by economists such as Knetsch, Buchanan and Coase and that CCX could serve as a bridge between theory and practice for economists interested in further study of markets and public goods. The paper also highlights the influence of CCX as a rules-based single coherent entity that significantly influenced the development of what has become known as the “voluntary carbon market” (VCM), while being quite different from the VCM. In the process of building its operations, CCX also generated a number of firsts, including creating the world’s first GHG registry, and inventing the world’s first carbon-based tradeable unit, the carbon financial instrument (CFI), equivalent to one hundred metric tonnes of CO2e, and spearheaded a landmark joint venture in China that created China’s first pilot carbon market, the Tianjin Climate Exchange (TCX). Given the start-up nature of CCX, its significant global membership and international coverage is notable. The paper suggests the evolution and growth of CCX represents perhaps the largest ever experiment in behavioral economics relevant to contemporary climate change and environmental issues, yet one of the least understood and studied other than by those who had been involved. The paper will explore the origins, rationale, structure, framework, rules and legacy of CCX, including recommendations based on lessons learned, as the world faces the compounding crisis of climate change and the urgency of meeting the objectives of the Paris Agreement to stem climate change, the myriad of disparate Net Zero pledges to reduce emissions, and additional international environmental agreements aimed to protect biodiversity and other natural systems and processes.
INTER-GENERATIONAL IMPACTS OF SINGAPORE’S BUDGETARY RESPONSES TO COVID-19: GENERATIONAL ACCOUNTING FRAMEWORK
Authors: CHIA NGEE CHOON , DONG DYON
Published: April 2024

Singapore’s rapidly aging population poses significant challenges to the government’s long-term fiscal sustainability as it structurally affects government revenue and expenditure. Amidst the demographic trends, total government spending has skyrocketed to unprecedented amounts in 2020 in response to the COVID-19 pandemic. This paper evaluates Singapore’s fiscal sustainability and intergenerational fiscal impacts through the lens of generational accounting and actuarial analyses, before and after COVID-19. Our model predicts a pre-COVID absolute intergenerational gap of S$512 thousand between future generations and current newborns, implying that there is considerable intergenerational inequity. This gap increases by a further S$67 thousand after factoring in COVID-19’s impact on government net spending and short-term fertility rates. Fiscal balance can be restored in the short term and intergenerational equity in the long term, after incorporating key policy changes such as Goods and Services Tax (GST) hike and carbon tax increases.
COMPARISON OF VARIOUS FISCAL POLICIES IN THE FACE OF DIFFERENT DEMOGRAPHIC STAGES
Authors: YOSHINO NAOYUKI , KAMEDA KEIGO , MIYAMOTO HIROAKI , LU ZHENKUN
Published: April 2024

This study examines the impact of aging on the effectiveness of various fiscal expenditures, including government consumption, one-time government transfers to households, public investment and R&D spending, using a dynamic stochastic general equilibrium model. Our findings reveal that (1) Aging enhances the effects of the transfer on augmenting GDP. (2) Regardless of aging, R&D expenditure consistently stands out over all time spans, with younger society benefiting more. (3) Public investment ranks second among for different fiscal policies in the long run, while shows bigger impact in younger society. (4) One-time transfer has only a temporary effect and is the least effective in boosting GDP in both young and old societies. (5) Multipliers for public investment and R&D expenditure increase with the accumulation of public capital and TFP. Their multiplier of young society is larger than old society because impact on consumption is much more effective.
HOW DOES UNCONVENTIONAL MONETARY POLICY GUIDE ENTERPRISES’ GREEN TRANSITION?
Authors: LI WEN , LI JING-PING
Published: April 2024

This study investigates the capacity of unconventional monetary policy (UMP) to facilitate enterprises’ transition towards environmentally sustainable practices. It posits that UMP can enhance financing conditions, support the economic viability of green activities and promote investments with a long-term environmental focus. We assess green transitions by measuring enterprises’ green total factor productivity (GTFP) using the slacks-based model. Additionally, we leverage the expansion of the collateral framework in China as a quasi-natural experiment to explore the nuanced effects of UMP on green transitions. Employing a difference-in-differences (DID) approach, our findings reveal that UMP significantly encourages enterprises, especially non-state-owned ones, to adopt greener practices. However, its impact is less pronounced for state-owned enterprises (SOEs) and those in capital-intensive sectors. To ensure the robustness of our results, we conducted various tests, confirming the reliability of our findings. This study demonstrates the effectiveness of UMP in green transitions, emphasizing its role in guiding enterprises toward preventive environmental strategies and offering key insights for policymakers.
Ground state spectra, decay properties of B and D mesons in a relativistic square root potential
Authors: Behera S. , Panda S.
Published: April 2024

We look at the mass spectra of the [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] mesons using a relativistic square root potential. Before looking at the mass spectra, we have to figure out the model parameters, which are [Formula: see text][Formula: see text]GeV and [Formula: see text][Formula: see text]GeV. The calculated result of [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], findings of this study exhibit a notable concurrence with the experimental observations and pertinent theoretical projections. We estimate the decay constant, leptonic decay width, semileptonic decay width, and branching fractions of pseudoscalar and vector mesons, specifically B and D mesons, while keeping the model parameters unchanged. The pseudoscalar decay constants and partial decay widths of “B and D-mesons” reasonably agree with the theoretical predictions, lattice quantum chromodynamics (LQCD) calculations, and experimental data. Moreover, we have efficiently found the values for these mesons’ leptonic decay width and branching fraction, matching the experimental findings and theoretical forecasts. The calculated values of semileptonic decays are [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text], [Formula: see text], the proximity of the observed results to experimental and certain theoretical models is evident.
Transfer Learning-Based Structural Damage Identification for Building Structures with Limited Measurement Data
Authors: Zhang Xutong , Zhu Xinqun , Yu Yang , Li Jianchun
Published: April 2024

Structural damage detection is crucial for ensuring the safety of civil building structures in operational environments. Recently, deep learning-based methods have gained increasing attention from engineers and researchers. The performance of conventional deep learning methods for structural damage detection relies on a large number of labeled training datasets. However, it is difficult or/and impossible to obtain sufficient datasets to cover various damage scenarios for in-service structures. A little research has been conducted to identify both the damage severity and location with limited labeled measurement data. A novel transfer learning-based method for structural damage identification with limited measurements has been proposed utilizing frequency response functions (FRFs) as the input. The real structure is regarded as the target domain and its numerical model is as the source domain. The samples for various damage scenarios are generated using the numerical model, and a designed deep convolutional neural network (CNN) is pre-trained. The knowledge of the pre-trained network is transferred to identify the damage location and severity of the real structure using limited measurement data. Numerical and experimental studies have been conducted on a three-story building structure to verify the performance of the proposed method. To understand transfer learning and model interpretability, the t-SNE feature visualization is adopted to show the feature distribution changes during transfer learning. Numerical and experimental results show that the proposed approach outperforms conventional CNN models, and it is effective and accurate in identifying structural damage location and severity in real structures with limited measurement data.
The Thermodynamic Responses of FG Conical/Cylindrical/Annular Panels with Circumferentially Variable Dimensions
Authors: Shi Xuanzhi , Zhong Rui , Wang Qingshan , Shi Xianjie , Huang Zhou
Published: April 2024

This paper is the first to develop a meshless thermodynamic model with circumferentially variable dimensions to analyze the thermal-vibration mechanisms of typical functionally graded (FG) panel-type structures, mainly including conical, cylindrical, and annular panels. The longitudinal variation of the panel-type structure’s circumferential dimensions is taken into account according to specific rules. The Thin Plate Inverse Mapping (TPIM) meshless shape functions are introduced to characterize the displacement components associated with each substructure. Thermodynamic equations are formulated based on FSDT thermo-elastic theory as well as Hamilton’s principle. Rectangular and exponential pulse loads are taken into consideration for forced vibration analysis in this formulation. Numerical convergence and comparative cases are provided. Solutions from the literature and finite element simulation results are utilized for comparison, revealing that the percentage differences observed are all less than 0.025%. This confirms the reliability and accuracy of the developed analysis model. In conclusion, a detailed investigation is conducted on the influences of geometrical dimensions, boundary conditions, as well as thermal and external loads on the thermodynamic behaviors of FG panel-type structures with circumferentially variable dimensions.
A Novel Bayesian Empowered Piecewise Multi-Objective Sparse Evolution for Structural Condition Assessment
Authors: Ding Zhenghao , Kuok Sin-Chi , Lei Yongzhi , Yu Yang , Zhang Guangcai , Hu Shuling , Yuen Ka-Veng
Published: April 2024

In this study, a novel Bayesian empowered piecewise multi-objective function is developed, in which a traditional objective function is applied to realize the rough optimization in the first stage to determine the approximate results. Then, a sparse Bayesian learning-based objective function is applied to realize refined optimization with the obtained approximate results in the second stage. On the other hand, considering the sparsity of the structural damage identification, two simple but effective calculation frameworks, the colony initial sparsification and elite clustering framework, are integrated into the evolution, making the algorithm adaptable to handle the defined sparse optimization problem. Therefore, the proposed calculation framework is more efficient and robust while no initial conditions are needed. We will carry out a numerical example on a truss and an experimental validation on a fixed-end beam with a single-sensor measurement system to verify the method.
On the normally torsion-freeness of square-free monomial ideals
Authors: Nasernejad Mehrdad , Quiñonez Veronica Crispin , Hochstättler Winfried
Published: April 2024

Let [Formula: see text] be a square-free monomial ideal, [Formula: see text] be a prime monomial ideal in [Formula: see text], [Formula: see text] be a square-free monomial in [Formula: see text] with [Formula: see text], and [Formula: see text]. In this paper, we first focus on the associated primes of powers of [Formula: see text] and explore the normally torsion-freeness of [Formula: see text]. We also give an application on a combinatorial result. Next, we study when a square-free monomial ideal is minimally not normally torsion-free. Particularly, we introduce a class of square-free monomial ideals, which are minimally not normally torsion-free.
Near automorphisms of the complement or the square of a cycle
Authors: Zhao Jinxing
Published: April 2024

Let [Formula: see text] be a graph with vertex set [Formula: see text], [Formula: see text] a permutation of [Formula: see text]. Define [Formula: see text] and [Formula: see text], where the sum is taken over all unordered pairs [Formula: see text], [Formula: see text] of distinct vertices of [Formula: see text]. Let [Formula: see text] denote the smallest positive value of [Formula: see text] among all permutations [Formula: see text] of [Formula: see text]. A permutation [Formula: see text] with [Formula: see text] is called a near automorphism of [Formula: see text]. In this paper, the near automorphisms of the complement or the square of a cycle are characterized. Moreover, [Formula: see text] and [Formula: see text] are determined.
Citizen Satisfaction through the Development of a Sustainable Mobile Government Service Model — A Blended Approach through M-S-QUAL and EGAM Theories
Authors: Patil Kanchan Pranay , Bharathi S. Vijayakumar
Published: April 2024

This research examines the relationship between sustainable m-Gov services and citizen satisfaction with m-Gov services. A multidimensional conceptualisation of sustainable m-Gov services is defined to examine citizen satisfaction. The research model was tested using empirical data collected from 687 m-Gov service users through PLS-SEM. The results showed that service availability, contact, responsiveness, efficiency, and privacy significantly influenced m-Gov service quality. Mobile self-efficacy, perceived trust, and perceived functional benefit are critical for m-Gov adoption. However, perceived compatibility and perceived ability-to-use did not explain the m-Gov adoption. The findings of m-Gov service quality and m-Gov adoption interactions supported their role in predicting sustainable m-Gov services, thereby increasing citizen satisfaction. The outcome of this study is vital for government strategies, public administration, policymakers, and government service delivery literature and provides citizen-centric m-Gov services. Thus, the government and citizens adopting m-Gov services can benefit from the tested model towards increasing the sustainable offering of m-Gov services.
A Frictionless Normal Contact Model for Flattening Elastoplastic Single Asperity Considering Yield Plateau and Strain Hardening
Authors: Luo Juncheng , Liu Jianhua , Xia Huanxiong , Ao Xiaohui , Zhang Jian , Zhang Xuerui , Zhang Hui , Huang Hao , Liu Xin
Published: April 2024

Contact between solids is a ubiquitous phenomenon in engineering and an enduring topic in tribology. However, material yield plateau and strain hardening are common in ductile metals but rarely considered in contact mechanics. This work develops a three-phase constitutive model that accurately describes the elastic and plastic behaviors considering both yield plateau and strain hardening, and then constructs a finite element model for the contact of a rigid flat and a corresponding elastoplastic hemisphere. The Taguchi method is employed to conduct numerical simulations of material parameters for finding generalized empirical formulations of dimensionless contact load and area versus dimensionless contact interference in the range of [Formula: see text]. The presented empirical formulations demonstrate good accuracy verified with KE, JG, and Ghaednia’s models. This work fills the gap that the yield plateau has not ever been explored in contact mechanics and provides a basic model for describing the contact behavior of engineering rough surfaces for ductile metal.
Universal quadratic forms and Dedekind zeta functions
Authors: Kala Vítězslav , Melistas Mentzelos
Published: April 2024

We study universal quadratic forms over totally real number fields using Dedekind zeta functions. In particular, we prove an explicit lower bound for the rank of universal quadratic forms over a given number field K, under the assumption that the codifferent of K is generated by a totally positive element. Motivated by a possible path to remove that assumption, we also investigate the smallest number of generators for the positive part of ideals in totally real numbers fields.
On a sumset problem for dilated integer sets
Authors: Kaur Ramandeep , Bhanja Jagannath , Singh Sandeep
Published: April 2024

Let A be a non-empty finite set of integers. For any integer k, let [Formula: see text]. One of the important problems in additive combinatorics is to find the optimal lower bound for the cardinality of the sumset [Formula: see text]. Cilleruelo, Silva, and Vinuesa conjectured that, if k is a positive integer and A is a finite set of integers with sufficiently large cardinality, then [Formula: see text]. For some values of k this conjecture is already confirmed. In this article, under certain restrictions on set A, we confirm this conjecture for all positive integers k except for those of the form [Formula: see text] or [Formula: see text], where p is an odd prime number and [Formula: see text] for [Formula: see text].
Fourier coefficients of Jacobi forms of real weights
Authors: Lee Youngmin , Lim Subong
Published: April 2024

Let m and N be positive integers and k be a negative real number. Let [Formula: see text] be a multiplier system of weight k on [Formula: see text]. In this paper, we give an exact formula for the Fourier coefficients of the holomorphic part of a harmonic Maass–Jacobi form of weight k, index m, and multiplier system [Formula: see text] on [Formula: see text]. As an application, we investigate the number of ratios of the Fourier coefficients of the holomorphic parts of two harmonic Maass–Jacobi forms. Moreover, we obtain the equivalent conditions for the principal part of a harmonic Maass–Jacobi form to be the principal part of a weak Jacobi form with poles only at infinity.
On mean values for the exponential sum of divisor functions
Authors: Zhang Wei
Published: April 2024

In this paper, we study mean values for exponential sums of divisor functions. We improve previous results of [M. Pandey, Moment estimates for the exponential sum with higher divisor functions, C. R. Math. Acad. Sci. Paris  360 (2022) 419–424].
Sums or products of double factorials in Lucas sequences
Authors: Zhang Shaonan , Yang Peng , Cai Tianxin
Published: April 2024

In this paper, we show that each non-degenerate Lucas sequence contains only finitely many terms which can be written as products of double factorials or as sums or differences of double factorials. In particular, we find all the solutions to the products of double factorials which are sums or differences of two Fibonacci numbers, and Fibonacci numbers which are sums or differences of two double factorials.
Lattice points on a curve via ℓ2 decoupling
Authors: Kiyohara Daishi
Published: April 2024

This paper extends Bombieri and Pila’s estimate of lattice points on curves to arbitrary finite sets by incorporating considerations of minimal separation and the doubling constant. We derive the estimate by establishing the [Formula: see text] decoupling inequality for non-degenerate curves in [Formula: see text]. Additionally, we review the curve-lifting method introduced in Bombieri and Pila’s work and establish the estimate of lattice points in the neighborhood of a planar curve.
On the sign changes of the coefficients attached to triple product L-functions
Authors: Hua Guodong
Published: April 2024

Let f and g be two distinct normalized primitive holomorphic cusp forms of even integral weights [Formula: see text] and [Formula: see text] for the full modular group SL[Formula: see text], respectively. In this paper, we investigate the sign changes of the sequence [Formula: see text] in short intervals, where [Formula: see text] denote the normalized coefficients of triple product L-functions [Formula: see text] attached to f and [Formula: see text], respectively. We provide quantitative results for the number of sign changes of the sequences mentioned above in short intervals.
Norm bounds on Eisenstein series
Authors: Kelmer Dubi , Kontorovich Alex , Lutsko Christopher
Published: April 2024

We study the sup-norm bound (both individually and on average) for Eisenstein series on certain arithmetic hyperbolic orbifolds producing sharp exponents for the modular surface and Picard 3-fold. The methods involve bounds for Epstein zeta functions, and counting restricted values of indefinite quadratic forms at integer points.
On the rational cuspidal divisor class groups of Drinfeld modular curves X0(𝔭r)
Authors: Ho Sheng-Yang Kevin
Published: April 2024

Let [Formula: see text] be the rational cuspidal divisor class group of the Drinfeld modular curve [Formula: see text] for a prime power level [Formula: see text]. We relate the rational cuspidal divisors of degree 0 on [Formula: see text] with [Formula: see text]-quotients, where [Formula: see text] is the Drinfeld discriminant function. As a result, we are able to determine explicitly the structure of [Formula: see text] for arbitrary prime [Formula: see text] and [Formula: see text].
Lehmer-type bounds and counting rational points of bounded heights on Abelian varieties
Authors: Kumar Narasimha , Sahoo Satyabrat
Published: April 2024

In this paper, we study Lehmer-type bounds for the Néron–Tate height of [Formula: see text]-points on abelian varieties A over number fields K. Then, we estimate the number of K-rational points on A with Néron–Tate height [Formula: see text] for [Formula: see text]. This estimate involves a constant C, which is not explicit. However, for elliptic curves and the product of elliptic curves over K, we make the constant explicitly computable.
Explicit sieve estimates and nonexistence of odd multiperfect numbers of a certain form
Authors: Yamada Tomohiro
Published: April 2024

In this paper, we prove explicit asymptotic formulae for some functions used in sieve methods and show that there exists no odd multiperfect number of abundancy four whose squared part is cubefree.
Radial behavior of Mahler functions
Authors: Poulet Marina , Rivoal Tanguy
Published: April 2024

Many papers have been recently devoted to the study of the radial behavior as [Formula: see text] of transcendental r-Mahler functions holomorphic in the open unit disk. In particular, Bell and Coons showed in 2017 that, in a generic sense, r-Mahler functions behave like [Formula: see text] for some [Formula: see text] and [Formula: see text] is a real analytic function of [Formula: see text] such that [Formula: see text]. They did not provide a formula for [Formula: see text] which was made explicit only in a few examples of r-Mahler functions of orders 1 and 2, and for specific values of r. In this paper, we first provide an explicit expression of [Formula: see text] as an exponential of a Fourier series in the variable [Formula: see text] for every r-Mahler function of order 1. Then, extending to a large setting a method introduced by Brent–Coons–Zudilin in 2016 to compute [Formula: see text] associated to the Dilcher–Stolarsky function (a 4-Mahler function of order 2 in [Formula: see text]), we provide an explicit expression of [Formula: see text] for every r-Mahler function of order 2 under mild assumptions on the coefficients in [Formula: see text] of the underlying r-Mahler equations. This applies in particular to the generating function of the Baum–Sweet sequence. We do the same for r-Mahler functions solutions of inhomogeneous Mahler equations of order 1.
Visual aspects of Gaussian periods and analogues
Authors: Platt Samantha
Published: April 2024

Gaussian periods have been studied for centuries in the realms of number theory, field theory, cryptography, and elsewhere. However, it was only within the last decade or so that they began to be studied from a visual perspective. By plotting Gaussian periods in the complex plane, various interesting and insightful patterns emerge, leading to various conjectures and theorems about their properties.

In this paper, we offer a description of Gaussian periods, along with examples of the structure that can occur when plotting them in the complex plane. In addition to this, we offer two ways in which this study can be generalized to other situations — one relating to supercharacter theory, the other relating to class field theory — along with discussions and visual examples of each.
Arithmetic Gan–Gross–Prasad conjecture for RSZ unitary Shimura curves
Authors: Nakayama Yuta
Published: April 2024

Xue proved an equational refinement of the unitary Shimura curve case of the arithmetic Gan–Gross–Prasad conjecture via the Gross–Zagier formula for quaternionic Shimura curves. On the other hand, Rapoport, Smithling and Zhang posed a variant of the conjecture, using modified PEL type Shimura varieties, which we call RSZ Shimura varieties. We reinterpret the result of Xue in terms of the modified Shimura curves. We then use the reinterpretation to prove a case of the variant of the conjecture. Our result combined with the work of Xue establishes a connection between the variant and the Gross–Zagier formula.
Preperiodic points of polynomial dynamical systems over finite fields
Authors: Andersen Aaron , Garton Derek
Published: April 2024

For a prime p, positive integers [Formula: see text], and a polynomial f with coefficients in [Formula: see text], let [Formula: see text]. As n varies, the [Formula: see text] partition the set of strictly preperiodic points of the dynamical system induced by the action of f on [Formula: see text]. In this paper, we compute statistics of strictly preperiodic points of dynamical systems induced by unicritical polynomials over finite fields by obtaining effective upper bounds for the proportion of [Formula: see text] lying in a given [Formula: see text]. Moreover, when we generalize our definition of [Formula: see text], we obtain both upper and lower bounds for the resulting averages.
Values of p-adic hypergeometric functions and p-adic analogue of Kummer’s linear identity
Authors: Saikia Neelam
Published: April 2024

Let p be an odd prime and [Formula: see text] be the finite field with p elements. This paper focuses on the study of the values of a generic family of hypergeometric functions in the p-adic setting, which we denote by [Formula: see text], where [Formula: see text] and [Formula: see text]. These values are expressed in terms of numbers of zeros of certain polynomials over [Formula: see text]. These results lead to certain p-adic analogues of classical hypergeometric identities. Namely, we obtain p-adic analogues of particular cases of a Gauss’s theorem and a Kummer’s theorem. Moreover, we examine the zeros of these functions. For example, if n is odd, we characterize t for which [Formula: see text] has zeros. In contrast, we show that if n is even, then the function [Formula: see text] has no zeros for any prime p apart from the trivial case when [Formula: see text].
Weighted sum formula for variants of half multiple zeta values
Authors: Kawamura Hanamichi , Maesaka Takumi , Ono Masataka
Published: April 2024

We prove some weighted sum formulas for half multiple zeta values, half finite multiple zeta values, and half symmetric multiple zeta values. The key point of our proof is Dougall’s identity for the generalized hypergeometric function [Formula: see text]. Similar results for interpolated refined symmetric multiple zeta values and half refined symmetric multiple zeta values are also discussed.
Weak Ramanujan property of the standard non-uniform arithmetic quotient of PGL4
Authors: Hong Soonki , Kwon Sanghoon
Published: April 2024

Let F be a field of formal series over a finite field and [Formula: see text] be the affine building associated to [Formula: see text]. Given a lattice [Formula: see text] in [Formula: see text], the complex arising as a quotient [Formula: see text] is called weakly Ramanujan if every nontrivial discrete simultaneous spectrum of the colored adjacency operators [Formula: see text] acting on [Formula: see text] is contained in the simultaneous spectrum of those operators acting on [Formula: see text]. In this paper, we prove that the standard non-uniform arithmetic quotient [Formula: see text] of [Formula: see text] is weakly Ramanujan.
Design and Implementation of Silicon-Doped Ferrogate Stacking JL-VTFET in MIC Sepic Convertor
Authors: Kumar Tewari Vijay , Singh Shailendra , Kumar Dilip , Pandey Utkarsh , Shukla Man Mohan
Published: April 2024

This paper introduces a Ferro technique in the junctionless vertical tunnel field effect transistor in which the ferroelectric property in the [Formula: see text] is developed with the help of Silicon doping in it. The incorporation of the ferroelectric oxide stacking with [Formula: see text] results in low sub-threshold slope and high trans-conductance which is highly suitable for sensing of small voltage and converting it into strong drain current. The introduction of the high k-dielectric material with [Formula: see text] also leads to small lattice mismatch so that the losses can be reduced. The device shows ON current in the order of (2.62 × 10[Formula: see text]A/[Formula: see text]m) and the ratio of the ON to OFF drain current is noted as (of 2.031 × 10[Formula: see text]). Moreover, the device exhibits sub-threshold slope 35mV/dec and the ratio of trans-conductance to drain current (gm/[Formula: see text]) in the range of 150–350 V[Formula: see text]. Then the design structure is used to develop the circuit of multiple input converters (MIC) because the device shows high conversion rate (trans-conductance). For the converter, State-space analysis is used for the modeling of converter which was further followed with the design of converters’ energy storing apparatus with its voltage gain formulation. Interaction analysis is used to create a decentralized controller. The controllers’ robustness is tested using parametric uncertainty. A 175-watt experimental archetype with 36 volt and 24-volt sources is developed in the lab. The digital controller was implemented using the processor. The efficacy of controllers for regulating sources and loads has been verified. The controller’s strength is ensured by the satisfactory correlation between simulation and investigational results. For the result outcome one can validate Silicon Doped Ferro Gate Stacking JL-VTFET results for low power applications.
Some optimal 𝔽q-linear codes over 𝔽ql
Authors: Li Juan , Gao Yun
Published: April 2024

Let [Formula: see text] be a finite field of cardinality [Formula: see text], where [Formula: see text] is a power of a prime and [Formula: see text] is a prime integer. An [Formula: see text]-linear code over [Formula: see text] of length [Formula: see text] is an [Formula: see text]-subspace of [Formula: see text]. If an [Formula: see text]-linear code over [Formula: see text] with parameters [Formula: see text] meets the Singleton bound, i.e., [Formula: see text], then it is called an MDS code. In this paper, by use of a Fourier matrix and a canonical form decomposition of constacyclic [Formula: see text]-linear codes over [Formula: see text], we construct some optimal [Formula: see text]-linear codes over [Formula: see text] which have the same parameters as the MDS codes over [Formula: see text].
The involvement of vitamin D in the pathogenesis of anxiety and depression in benign paroxysmal positional vertigo comorbidities
Authors: Ren Jinmei , Jiang Yuzhu , Zeng Qinghong , Wang Yang , Yang Qianhong , Jiang Yulong
Published: April 2024

We review the potential effects and mechanisms of vitamin D (VD) in patients with BPPV-associated anxiety and depression, offering a new perspective for treating the population. Methods: Through a systematic review of existing literature, we analyzed the relationship between VD and comorbid anxiety and depression in BPPV, with a particular focus on neuroendocrine-immune modulation, genetic polymorphisms, oxidative stress, and neuroinflammation. Results: A comprehensive analysis indicates a significant correlation between low levels of VD and the occurrence, recurrence of BPPV, and the comorbid symptoms of anxiety and depression. VD may exert protective effects against BPPV-associated anxiety and depression by regulating neuroendocrine and immune responses, influencing gene expression, and alleviating oxidative stress and neuroinflammation. Conclusion: This review suggests that monitoring VD levels and appropriate supplementation could be crucial for the treatment of patients with BPPV comorbid with anxiety and depression. More research should further validate the specific mechanisms of action of VD and its clinical application value to provide more scientific guidance for the treatment of psychiatric disorders accompanying BPPV.
Understanding Bangladesh–China Relations from ‘Win-Win Cooperation’ and ‘NOISE’ Analysis Perspectives
Authors: Bhuiyan Mohammad Shakil , Yi Wang
Published: April 2024

The study evaluates Bangladesh–China relations through the ‘win-win cooperation’ lens and concludes with a ‘NOISE’ (Needs-Opportunities-Improvements-Strengths-Exceptions) analysis. Bangladesh, a South Asian developing nation, has maintained a strategic partnership with Beijing since the establishment of their diplomatic ties. However, the relationship gained exceptional momentum after Bangladesh’s inclusion in the Belt and Road Initiative (BRI). Bangladesh’s need for growth-necessary financing and China’s massive foreign investment outlook have contributed to the growth of their economic engagements. The analysis suggests that the Bangladesh–China relationship exhibits ‘win-win cooperation’ dynamics. The study identified the significant trade gap, loan agreements, and disbursement delays, along with others, challenging the solid Bangladesh–China bilateral economic interactions. The Rohingya refugee crisis resolve and geopolitical competition among major powers are two non-bilateral issues that could potentially impact future Dhaka–Beijing relations. Overcoming the existing barriers could position Bangladesh–China relations as a model for smaller-major power bilateral relations, particularly for developing nations. It is a desk research by design. The findings of this study may provide insights to policymakers in addressing the existing barriers to meet future needs.
End of the Cretaceous
Authors: Gulick Sean P. S.
Published: April 2024

The Cretaceous ended when the Chicxulub asteroid struck the Yucatán platform, and all deposits and landforms generated are earliest Paleocene in age. Drill core from the Cretaceous–Paleogene (K–Pg) boundary sequence deposited on top of the Chicxulub impact structure's peak ring paired with geophysical data within the crater and other well-preserved marine and terrestrial K–Pg boundary sites provide insight into impact processes and effects on Earth's ecosystems, in terms of extinction and recovery. Key findings as reviewed here are: (1) the confirmation of acoustic fluidization as a physical principle to explain impact structure formation; (2) the importance of the target rock properties and marine setting for impactite depositional processes and drivers of climate change; (3) the state of understanding of extinction mechanisms and ecological recovery; and (4) implications for impact-generated hydrothermal habitat creation. Areas highlighted for the next stages of discovery include: (1) physics and chemistry of impact vapour plumes and ejecta processes; (2) sampling of the K–Pg boundary deposit and impact melt sheet within the central basin of the impact structure; (3) examination of ecosystem recovery in an ‘Early Ocean’ scenario at a range of K–Pg boundary sites; and (4) experiments and observations of impact hydrothermal systems as habitats on Earth and other worlds.
Differentiable solver for time-dependent deformation problems with contact
Authors: Huang Zizhou , Tozoni Davi Colli , Gjoka Arvi , Ferguson Zachary , Schneider Teseo , Panozzo Daniele , Zorin Denis
Published: April 2024

We introduce a general differentiable solver for time-dependent deformation problems with contact and friction. Our approach uses a finite element discretization with a high-order time integrator coupled with the recently proposed incremental potential contact method for handling contact and friction forces to solve ODE- and PDE-constrained optimization problems on scenes with complex geometry. It supports static and dynamic problems and differentiation with respect to all physical parameters involved in the physical problem description, which include shape, material parameters, friction parameters, and initial conditions. Our analytically derived adjoint formulation is efficient, with a small overhead (typically less than 10% for nonlinear problems) over the forward simulation, and shares many similarities with the forward problem, allowing the reuse of large parts of existing forward simulator code.

We implement our approach on top of the open-source PolyFEM library and demonstrate the applicability of our solver to shape design, initial condition optimization, and material estimation on both simulated results and physical validations.