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Recent research
- Society & Economics
Asymptotic behaviors for Volterra type McKean-Vlasov stochastic integral equations with small noise
This work is devoted to studying asymptotic behaviors for Volterra type McKean-Vlasov stochastic differential equations with small noise. By applying the weak convergence approach, we establish the large and moderate deviation principles. In addition, we obtain the central limit...
- Biology
Biosensors are increasingly important in the detection of biological and chemical targets in real time, in a sensitive and selective manner, for environmental monitoring, food safety and industrial applications. Their effectiveness requires precision design of elements such as bi...
- Health & MedicineOpen access
This paper develops a fractional-order ecological model describing one prey and two predator species with harvesting, predator interference, and a Beddington-DeAngelis functional response. Caputo fractional derivatives are incorporated to capture memory effects in population dyna...
- AI & ComputingOpen access
On The Structure Of Prime-Detecting Quasimodular Forms In Higher Levels
Craig, van Ittersum, and Ono conjectured that every prime-detecting quasimodular form of level 1 is a quasimodular Eisenstein series. This conjecture was proved by Kane–Krishnamoorthy–Lau and by van Ittersum–Mauth–Ono–Singh independently. However, in higher levels, prime-detectin...
- Engineering & Technology
Organic Solar Cells with Metallogel/LiF Cathode Double Layers and Non-Fullerene Acceptors
Metallogels are a new class of soft materials formed by supramolecular interactions between metal ions and low molecular weight gelators(LWMGs), and are well known for their semiconducting nature, especially transition metal-based ones. Recently, it has been shown that some of th...
- Society & Economics
Green credit risk assessment for manufacturing enterprises is a dynamic and complex problem affected by operational states, environmental uncertainty, financial conditions, information quality, and interactive risk evolution. Traditional assessment methods depend heavily on low-f...
- AI & ComputingOpen access
Deformations and Abelian Extensions on Anti-Pre-Jacobi-Jordan Algebras
The underlying algebraic structures of nondegenerate commutative 2-cocycles on Jacobi-Jordan algebras are introduced and are called anti-pre-Jacobi-Jordan algebras. It is proved that they belong to the class of Jacobi-Jordan-admissible algebras. Moreover, it is proved that the ne...
- Engineering & Technology
Fatigue Properties and Accumulative Damage Model of Bedded Salt Rock
To investigate the fatigue properties of bedded salt rock and the influences of mudstone interlayer on them, a series of fatigue tests were conducted on bedded salt rock under different cyclic loading conditions. The experimental results showed that the characteristics of stress-...
- AI & ComputingOpen access
Counting roots of unity on the graphs of Laurent series over non-Archimedean local fields
We completely classify Laurent series converging on the unit circle over a non-Archimedean local field (of any characteristic) that map infinitely many roots of unity to roots of unity. For a given Laurent series [Formula: see text] over a field of positive characteristic with re...
- Physics & SpaceOpen access
We investigate periodically impulsive fractional relaxation as a minimal model of nonlocal dissipative dynamics under repeated external stimulation. The free relaxation law is classical, but the driven problem introduces an additional timescale whose competition with the intrinsi...
- Physics & SpaceOpen access
A Note on Coadjoint Orbits for Multifermion Systems
The coadjoint orbit action for a multifermion system, as an exact description of its dynamics, is considered. We also discuss two sequential approximations. The first involves a reduction to dynamics on the single-particle Hilbert space described by another coadjoint orbit action...
- Physics & SpaceOpen access
Study of the Superradiance Phenomenon in the α’attractor Potential using the Log Derivative Method
In this article, we solve the time–independent one–dimensional Klein–Gordon equation in the presence of [Formula: see text]–attractor potential using the Log derivative method. We calculate the reflection coefficient [Formula: see text] and the transmission coefficient [Formula:...
- AI & ComputingOpen access
Perturbative Chern-Simons invariants from non-acyclic flat connections
We give a short review of our construction of a higher-loop perturbative invariant of framed 3-manifolds, generalizing the perturbative Chern- Simons invariant of Witten-Axelrod-Singer, associated to an acyclic flat connection, to an invariant given by the integral of a certain “...
- Society & EconomicsOpen access
Caring and complexity: social work with (unpaid) carers of older people
Around 8 per cent of the UK population provides unpaid care to a friend or relative. This article presents findings from a study that examined the skilled and often under-recognised work of social workers supporting older people and carers in England. Conducted across two demogra...
- Society & EconomicsOpen access
Additionality refers to the idea that charitable contributions to publicly-funded services should enhance, not replace, state provision. While it is often assumed that donors will avoid substitution of public funding when seeking causes to support, longstanding traditions of char...
- Society & EconomicsOpen access
On the Orthorecursive Expansion of Unity
The orthorecursive expansion of unity with respect to the monomial system [Formula: see text] in [Formula: see text] produces a sequence of rational coefficients satisfying an explicit linear recurrence. Kalmynin and Kosenko proved that the coefficients decay at least as [Formula...
- Engineering & TechnologyOpen access
To address the issue of flight safety for aircraft in harsh environments such as sandstorms, the erosion-induced cracking of composite blade of turboprop aircraft and helicopter rotors operating was analyzed in severe wind-sand environments. First, the full-scale blade erosion da...
- Engineering & TechnologyOpen access
The use of sloped rolling-type bearings (SRBs) to protect critical equipment from seismic damage has been widely adopted. However, maintaining SRB displacement responses within safe limits often requires a large damping force, which results in unacceptable accelerations. This hig...
- Engineering & Technology
WiFi channel state information (CSI) can characterize wireless-channel variations induced by human activities without directly capturing identifiable visual content, providing a contactless technical approach to indoor human activity recognition (HAR). To address the difficulty o...
- Engineering & Technology
Accurate scheduling optimization in modern power distribution networks requires both reliable load forecasting and efficient global optimization. However, existing approaches often suffer from performance bottlenecks such as poor adaptability to fluctuating load patterns, slow co...