bluuebunny/crossref_metadata_2025_split huggingface dataset:
Designing an electromechanical metamaterial beam with arbitrary decoupled defect modes for multi-band wave localization
Authors: Jian Yupei , Tang Lihua , Huang Deqing , Han Hesheng , Liu Weiqun , Hu Guobiao 
Published: February 2025

Abstract
Defective phononic crystals (PnCs) and metamaterials have gained considerable attention for applications in waveguiding, energy harvesting, and sensing. Despite the increasing interest, traditional defective PnCs/metamaterials are typically restricted to single or dual defect bands, with narrow tunable ranges constrained by the bandgap width. Instead of structural defects, this study introduces an approach to achieve arbitrary decoupled defect modes in defective piezoelectric metamaterial via electrically controlled defects, enabling flexible wave localization across multiple frequency bands. Specifically, we design multiple bandgaps in piezoelectric metamaterials by paralleling unit cells with higher-order resonant circuits that include ‘current-flowing’ branches and consequently propose a multi-bandgap decoupling tuning method. Based on this, a conjecture that adjusting the inductance of a single cell can produce defect bands in all bandgaps is proposed. To accurately predict defect bands, harmonic responses, and wave modes, the spectral element method, incorporating the Timoshenko beam unit, is used to describe the dynamic properties of the metamaterial, which are further validated by finite element analysis. The influence of electrical open-circuit and short-circuit conditions on defect-mode frequencies, alongside the frequency-dependent properties of the energy localization effect are investigated. Results confirm that an arbitrary number of defect bands at specific frequencies can be achieved by tuning the defective cell’s electrical impedance, with each band’s tunability and corresponding energy-localized behavior functioning independently. The proposed approach uniquely enables multi-band wave localization with a single-point defect, offering a significant advantage over conventional methods requiring multiple structural defects, and opening new avenues for programmable wave localization in complex vibration scenarios.
Magnetic and mechanical analysis of Bi-2212 Rutherford cable in a cos-theta sub-scale dipole coil*
Authors: D’ Agliano A , Zlobin A V , Novitski I , Turrioni D , Barzi E , Donati S , Giusti V 
Published: February 2025

Abstract
The U.S. Magnet Development Program (US-MDP) explores high-field accelerator magnets compatible with operational conditions beyond the limits of Nb3Sn technology. The ongoing R&D High-Temperature Superconductors (HTS) suggests using Bi2Sr2CaCu2O

8
−
x

(Bi-2212) as superconducting element. Bi-2212 Rutherford cables maintain a high critical current (

I

C

) when exposed to a large external magnetic field. However, Bi-2212 exhibits an oversensitive stress–strain response when subject to large Lorentz forces. This paper reports on the magnetic and mechanical analysis of the Bi-2212 cosine-theta insert being developed at Fermilab for a hybrid magnet composed of two external layers of Nb3Sn and two internal layers of Bi-2212. We performed a FEM analysis of the insert to estimate the HTS stress state in the coil’s strands under magnetic and mechanical loads.
Robustness of the solitons against perturbations in certain nonlocal nonlinear Schrödinger-type equations in nonlinear physics
Authors: Sreelakshmi M D , Sinthuja N , Priya N Vishnu , Senthilvelan M 
Published: February 2025

Abstract
The nonlocal nonlinear evolution equations describe phenomena in which wave evolution is influenced by local and nonlocal spatial and temporal variables. These equations have opened up a new wave of physically important nonlinear evolution equations. Their solutions provide insights into the interplay between nonlinearity and nonlocality, making it a cornerstone in the study of nonlocal nonlinear systems. However, the stability of such solutions has not been extensively explored in the literature. Stability analysis ensures that these solutions are robust and capable of persisting under real-world perturbations, making them physically meaningful. In this work, we examine the stability of soliton solutions of four types of nonlocal nonlinear evolutionary equations: (i) the space-shifted nonlocal nonlinear Schrödinger equation, (ii) the nonlocal complex time-reversed Hirota equation, (iii) the nonlocal real space-time-reversed modified Korteweg–de Vries equation, and (iv) a fourth-order nonlocal nonlinear Schrödinger equation. These equations arise in various physical fields such as nonlinear optics, Bose–Einstein condensates, plasmas and so on where nonlocality and nonlinearity play significant roles. We introduce certain perturbations to the soliton solutions of these equations and analyze their stability. Our findings indicate that the soliton solutions of the aforementioned equations are stable under such perturbations. To the best of our knowledge, this approach to investigating the stability of these solutions is novel.
Data taking strategy for ψ(3770) and ϒ(4S) branching fraction measurements at e+e- colliders
Authors: Li Jiaxin , Ma Jun-Li , Hou Xiantao , Yuan Chang-Zheng , Wang Xiaolong 
Published: February 2025

Abstract
The $\psi(3770)$ and $\Upsilon(4S)$ states predominantly decay into open-flavor meson pairs, while the decays of $\psi(3770) \to \mbox{\text{non}-}D\bar{D}$ and $\Upsilon(4S) \to \mbox{\text{non}-}B\bar{B}$ are rare but crucial for elucidating the inner structure and decay dynamics of heavy quarkonium states. To achieve precise branching fraction measurements for the $\psi(3770) \to \mbox{\text{non}-}D\bar{D}$ and $\Upsilon(4S) \to \mbox{\text{non}-}B\bar{B}$ decays at the high luminosity $e^+e^-$ annihilation experiments, we employed Monte Carlo simulations and Fisher information to evaluate various data taking scenarios, ultimately determining the optimal scheme. The consistent results of both methodologies indicate that the optimal energy points for studies of $\psi(3770) \to \mbox{\text{non}-}D\bar{D}$ decays are $3.769~{\rm GeV}$ and $3.781~{\rm GeV}$, while those for $\Upsilon(4S) \to \mbox{\text{non}-}B\bar{B}$ decays are $10.574~{\rm GeV}$ and $10.585~{\rm GeV}$. In addition, we provide an analysis of the relationship between the integrated luminosity and the precision in branching fraction measurements derived from these data samples, with the branching fraction spanning several orders of magnitude. In addition, we studied the dependence of the precision in branching&#xD;fraction measurements on the integrated luminosity, with the branching fractions spanning several&#xD;orders of magnitude.
alpha decay properties of superheavy nuclei based on optimized alpha decay energies
Authors: Deng Jun-Gang , Li Jia-Xing , Cheng Jun-Hao , Mu Lin , Zhang Hongfei 
Published: February 2025

Abstract
The accuracy of the Finite-Range Droplet Model 2012 (FRDM) in describing the $\alpha$ decay energies of the 947 known heavy and superheavy nuclei is studied. It is clearly found that there are obvious discrepancies between the $\alpha$ decay energies obtained by FRDM and those reported by the evaluated atomic mass table AME 2020 (AME), in particular that FRDM underestimates the experimental $\alpha$ decay energies of the superheavy nuclei. The $\alpha$ decay energies of known nuclei obtained by FRDM are optimized, i.e. FRDM-NN, using a neural network approach and the accuracy is significantly improved. The $\alpha$ decay energy systematics obtained by both FRDM and FRDM-NN show the obvious shell effect at neutron number $N=184$, implying that the $N=184$ may be the magic number of the superheavy nucleus region. The $\alpha$ decay half-lives of known superheavy nuclei are calculated using the Generalized Liquid Drop Model (GLDM) and the Royer formula with the input of the optimized $\alpha$ decay energies obtained by FRDM-NN, and the calculations can reproduce the experimental data well. The $\alpha$ decay half-lives of unknown superheavy nuclei, in particular superheavy nuclei with $Z=119$ and 120, are predicted by using the GLDM and the Royer formula with the input of the $\alpha$ decay energy obtained by FRDM-NN. The relative error of two types of predicted $\alpha$ decay half-lives and superposition are analysed, and the average predictions are given. The $\alpha$ decay energies predicted by FRDM-NN and the $\alpha$ decay half-lives calculated by the GLDM and the Royer formula can provide a reference for the experimental synthesis of new superheavy elements with $Z=119$ and 120.
Biomaterials for aerospace applications: a sustainable technological analysis
Authors: Maldonado-Romo Javier , Jami Anoohya , Sant Aditi , Montesinos Luis , Ponce Pedro 
Published: February 2025

Abstract
The present study examines bio-processes in the aerospace industry with an emphasis on discovering biomaterials that demonstrate advantages over conventional materials. It provides a thorough analysis of current biomaterials, detailing their properties and potential uses in aerospace applications. By assessing fundamental performance metrics, this research highlights materials with superior attributes, including strength-to-weight ratio, durability, and resilience under extreme conditions. The study reviews three promising biomaterials: spider silk, basalt, and bamboo fibers. Spider silk, known for its strength, lightness, and flexibility, could be applied in space exploration to monitor spacecraft integrity, assess astronaut health, and detect leaks or damage. Basalt fiber’s resistance to high temperatures makes it suitable for protective clothing and thermal insulation, and it can be combined with other materials to create strong, lightweight composites. Bamboo fiber, with a strength-to-weight ratio around six times that of steel, offers notable lightness and strength, and its micro-hierarchical structure enhances impact resistance, ductility, and fracture toughness. This paper proposes a sustainable technical analysis based on the pillars of economic, environmental, and social sustainability, along with an added pillar focused on technological progress. It also discusses opportunities to address research and development challenges, facilitating the use of these biomaterials in aerospace. This research aims to promote sustainable, high-performance aerospace technologies that lower environmental impact while advancing industry capabilities.
Research on accuracy testing of close-range photogrammetry for geometric feature measurement in particle accelerator
Authors: Wu Enchen , Li Xiao , Wang Xiaolong , Wang Wei , Zhang Qiuyu , Lin Yiliang , He Xiaoye 
Published: February 2025

Abstract
To meet the needs of the Hefei Advanced Light Facility
project and reasonably use the close-range photogrammetric system in
future alignment work. The research on the method and accuracy of
the Aicon DPA close-range photogrammetry system for geometric
element measurement was carried out. Using the external consistency
and the internal consistency as evaluation indexes, the systems are
designed and built with the laser interferometer (XL80), laser
tracker (AT 960), standard tetrahedral and marble guide to test the
point coordinates, distance, flatness measurement accuracy and
measurement repeatability for geometric element measurement
accuracy. The experimental results show that Aicon DPA point
coordinates, distance, and flatness measurements have high accuracy
in close-range photogrammetry. The point coordinate and flatness
measurements are 9.5 μm and 5.4 μm, respectively,
equal to or even better than the laser tracker's measurement
results. Furthermore, the measurement repeatability is better than
5 μm. The results of the simulated engineering site show that
the Aicon DPA has an accuracy of 19.8 μm, maintaining high
accuracy and good immunity to environmental interference. With the
expansion of the photogrammetry control range, when the length
reference is shorter than the measured object, the measurement
accuracy will continue to decrease. But when using the length data
of the interferometer as a reference, the accuracy within 8 meters
can be better than 30 μm. The accuracy testing process and
conclusion of this article have reference values for the use of
close-range photogrammetry systems in particle accelerators. The
close-range photogrammetry system will be fully utilized in
alignment work such as geometric element measurement, deformation
monitoring and data fusion with laser trackers in the Hefei Advanced
Light Facility.
Dynamic simulation and experimental study of dual-rotor system induced by rub-impact fault with variable state and parameter
Authors: Bing Hankun , Chen Bohua , Xiang Ling , Hu Aijun , Chen Kaile 
Published: February 2025

Abstract
A dynamic modeling method of dual-rotor system is proposed according to the structure feature and the rub-impact fault with variable state and parameter. The interactional mechanism of different parameters on the dual-rotor system is disclosed in this dynamic model, where multiple parameters are considered including of stator stiffness, eccentricity, static clearance, friction factor, radial clearance of intermediate bearing and contact effect between rotors. The vibrational responses of dual-rotor system with rub-impact are derived by numerical simulation. The dynamic characteristics for this system without faults and under rub-impact faults are analyzed by means of time domain diagram, spectrum diagram, axis locus diagram, bifurcation diagram and Poincare cross section diagram. And the dual-rotor test bench is established, and the dual-rotor trouble-free, mild and severe rub-impact failure experiments are carried out. Comparisons between experimental results and simulation analyses are conducted to validate the correctness of the theoretical model. The research results offer theoretical guidance for the structural design and the diagnosis of rub-impact fault of dual-rotor system.
Cumulative disaster exposure and hypertension among mothers who survived Hurricane Katrina
Authors: Meadows Marie-Claire , Desai Mayur M , Zacher Meghan , Lowe Sarah R 
Published: February 2025

Abstract
As climate change intensifies, hurricanes and weather-related disasters have been increasingly frequent and severe, impacting regions like the U.S. Gulf Coast with repeated hurricanes. While acute and short-term health impacts are well-described, impacts on longer-term and chronic conditions such as hypertension remain underexplored. This study examines the association between repeated hurricane exposure and hypertension risk in survivors. We used data from the Resilience in Survivors of Katrina project, a longitudinal (2003–2018) cohort of predominantly Black, low-income mothers affected by Hurricane Katrina. A sample of 505 women who were not hypertensive pre-Katrina was analyzed. Cumulative exposure was defined as the number of hurricanes experienced post-Katrina, assessed at several survey waves over 12 years. Logistic regression estimated associations between hurricane exposure and hypertension in 2016–18, with mediation analyses exploring the indirect effect via psychological distress (PD). In adjusted models, exposure to two hurricanes was associated with a 61% increase in hypertension odds (OR = 1.61, 95% CI: 1.00, 2.63) and exposure to three or more with 87% increased odds (OR = 1.87, 95% CI: 1.01, 3.47), relative to exposure to only one hurricane. The indirect effect from hurricane exposure to hypertension via PD was statically significant (95% CI: 1.01, 1.09). Findings highlight a novel link between cumulative disaster exposure and hypertension, with PD as a potential mediator. This suggests that repeated exposure to hurricanes not only impacts mental health but may also contribute to adverse physical health outcomes. Addressing both mental and physical health in disaster response, especially for vulnerable populations, is crucial.
Proleptic Praise
Authors: Holroyd Jules 
Published: February 2025

Abstract
What is praise? This chapter argues we can make progress by examining what praise does. It articulates some desiderata for a more adequate understanding of praise. It argues that praise has a largely overlooked social function: praise functions to affirm and entrench values, exerting pressure in praise’s audiences to affirm the values expressed. This chapter articulates the mechanisms that make praise an effective vehicle for entrenching values. This analysis is responsive to, and places at the foreground of our analysis, the possibility that praise can serve bad and oppressive ends. But it also illuminates a function of praise that is an important contribution to our practices, when attuned to non-oppressive ends. This account better meets the desiderata than recently developed accounts, which focus on praise as a second-personal communicative act.
Frames of Resistance
Authors: I. Córdova Hidalgo Amalia 
Published: February 2025

Abstract
Frames of Resistance is the first panoramic, comparative, and transnational study on Indigenous filmmaking in Latin America, a territorial expanse also known as Abya Yala. It foregrounds first-person accounts of pivotal moments in the rise of this media movement, offers a critical analysis of selected, representative films, and proposes best practices in teaching, curating, circulating, and ensuring long-term access and preservation of this work. The volume positions Indigenous filmmaking through the lens of decolonizing and Indigenous methodologies that challenge Western paradigms and build on principles of Indigenous organizational practices that are deeply grounded in specific territories, languages, and more collective ways of being. Scholars, students, and anyone interested in cinematic, regional, and Indigenous studies will glean knowledge of films and filmmakers that are defining a new relationship between Indigenous peoples and media technologies and shaping a global Indigenous cinema.
For a Cinema of Abya Yala
Authors: I. Córdova Hidalgo Amalia 
Published: February 2025

Abstract
This chapter locates Indigenous film and video production as a corpus and a practice now found across the continent, looking back at the conditions that led to its current, multiple expressions and developments. Beginning with the concept of Latin America, and the many terms used to refer to the original peoples of its territories, it introduces key terms that came from the emergence of Indigenous movements, their common demands, and efforts to secure the right to communication. The chapter describes the rise of cine y video indígena (Indigenous film and video) as part of a greater process of comunicación indígena (Indigenous communication) and its relation to politically driven movements, such as the Indigenous rights movement, and to activist community media and participatory film movements, such as the New Latin American cinema and Third and Fourth Cinemas. The main goal of the chapter is to set up the groundwork for the reader to better understand the surge of Indigenous audiovisual practices in different geographies of the region, and the innovative media training, production, and circulation models that have flourished over the past thirty-plus years.
Multilateral Trading System
Authors: Das Abhijit 
Published: February 2025

Abstract
Given the crucial role of the erstwhile GATT, and now the WTO, in formulating rules for international trade, this chapter discusses how the GATT came into existence, what were its main features, how did the transition from the GATT to the WTO come about, what influences have shaped the multilateral trading system under the GATT/WTO, and how have the issues of interest and concern to the developing countries been addressed by the GATT/WTO. It traces the evolution of GATT/WTO against the backdrop of changing economic interests of the developed countries. In addition, this chapter also briefly examines the implications of WTO rules on domestic policymaking in developing countries. Overall, this chapter will help the readers understand the fundamental underpinnings of the multilateral trading system, its relevance for economic prosperity of countries and the daunting challenges that various sources of influence on the system pose for most developing countries.
Colorful network: pair-bonding temporal dynamics involve sexual signals and impact reproduction
Authors: Barou-Dagues Marie , Sosa Sébastian , Angelier Frédéric 
Published: February 2025

Abstract
Mate choice and pair-bonding are the products of complex decisions involving repeated social interactions over time. They generally rely on multiple sexual signals and behaviors, depending on the phenotype and experiences of the chooser and are affected by environmental conditions and competition for mate access. However, studies investigating the mechanisms of mate selection often ignore the dynamic aspects of the pair formation. In this study, we used social network analyses to (1) describe sexual interactions over time in multiple groups of captive zebra finches (Taeniopygia guttata), (2) ask how individual sexual signals and body condition relate to pair-bonding temporal dynamics, and (3) investigate whether sexual networks influence assortative mating and reproductive performance. We followed sexual interactions of 8 sex-balanced groups of 8 individuals to extract social network metrics over 8 sessions of observation. We assessed individual body condition, sexual signals and couples’ pairing latency, laying date, clutch size, and embryo viability. Pair-bonding dynamics were first characterized by song interactions between most individuals, then by numerous allopreening and clumping behaviors, targeting more specific partners. More colorful individuals became engaged in more sexual interactions more rapidly, and such network dynamics explained assortative mating for beak color. Interestingly, being involved in song interactions was negatively associated with reproductive performances, while the reverse was true for being involved in allopreening and clumping interactions. Our study highlights the need to study pair-bonding dynamics to better understand how variations in individual phenotype within sexual networks explain assortative mating and reproductive performance in monogamous species.