bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of electron–electron interaction in disordered metal systems
Authors: Al’tshuler B. L. , Aronov A. G. 
Published: December 2024

We consider the influence of static defects in metal systems on the damping of single-electron excitations and the one-particle density of states.
It is shown that in disordered metal systems energy relaxation occurs much more rapidly than in an ideal Fermi fluid. The characteristic time is proportional to 1τ2∼(εℏD)d/21ν, where ε is the excitation energy measured from the Fermi level, D is the diffusion coefficient, and υ is the density of states.
The one-particle density of states has a minimum at the Fermi level, as has been often observed experimentally. When a magnetic field H is applied, two maxima for ε = ±gµH/2 are observed in addition to the minimum.
The localization criterion in the field theory of an electron in a random field
Authors: Sadovskii M. V. 
Published: December 2024

A general localization criterion for electrons in a random field is considered. The criteria presented in papers by Berezinskii, Gor'kov and Economou and Cohn are demonstrated to be equivalent.
It is proposed that the localization contribution to the two-particle Green's function be sought in the form of a polar term (at zero frequency) with a factorable residue, which determines the localization probability. The residue can be found by solving the homogeneous Bethe-Salpeter equation, which provides a method of determining the position of the mobility threshold (threshold of instability of the metal phase).
It is shown that the position of the mobility threshold coincides with the characteristic energy that specifies the region of applicability of perturbation theory (“the Ginzburg region” in the localization effect).
Within the framework of the instanton approach, the two-particle Green's function is demonstrated to have a singular contribution, corresponding to localization, in the range of energies that correspond to the density-of-states “tail.” In this case the residue at the pole factorizes and its value is determined by the instanton solutions of the effective field theory, comparable with the problem of an electron in a random field.
Within the framework of the formalism of effective action we present a program of a unified consideration of the Bethe-Salpeter and instanton instabilities which lead to localization.
Dielectric permittivity and the “healing length” in liquid helium films
Authors: Pikhitsa P. V. , Salistra G. I. 
Published: December 2024

1. The dielectric permittivity of a liquid helium film between metal plates is calculated with allowance for the long-range forces of the plates. These forces cause a measurable term, that is inversely proportional to the square of the plate thickness, to appear in the reciprocal capacitance of the capacitor formed by the plates.
2. We consider how the inhomogeneous part that is determined in the correlation function by the van der Waals forces affects the spectrum of bulk rotons and the density of the superfluid component in a liquid helium film on a solid substrate. The roton spectrum found has been used to calculate the additional surface density of the normal component. Its temperature dependence and value are fairly close to those observed experimentally.
Low temperature heat transport in crystalline bismuth telluride
Authors: Masut Remo A. 
Published: December 2024

Thermoelectric (TE) alloys based on Bi2Te3 are under intense development for current large-scale industrial applications. A quantitative understanding of their lattice thermal conductivity κlat is trailing mainly for two reasons: (i) lack of reliable κlat data and, surprisingly, (ii) lack of precise knowledge of the thermal properties of the parent compound, even in its crystalline form. In this work, we examine the existing data on crystalline Bi2Te3 and point out why data below its Debye temperature ΘD are necessary in order to develop a better understanding of heat transfer in the compound and alloys under current development. The measured temperature dependence of κlat from 2–300 K is compared to a simplified heat transport model based on the relaxation time approximation, as well as to more recent and elaborate calculations. Most data on polycrystalline TE materials currently under development only cover a limited temperature range above their Debye temperature ΘD. Yet, comparisons with hot extruded bulk polycrystalline Bi–Sb–Te–Se alloys with compositions close to Bi2Te3 stress the importance of obtaining data below ΘD in order to advance our understanding of the thermal properties of these materials so important for TE applications below 500 K. Attempting to understand and examine the thermal transport of solids based on the approximations involved in the pioneering work of the late 1950s is not justified except below their Debye temperature.
Mutual predictiveness of sound correspondences for reconstruction and language subgrouping
Authors: Lai Yunfan 
Published: December 2024

Abstract
This paper uses Gyalrongic languages, a conservative branch of Sino-Tibetan, to illustrate a new method to
evaluate proto-language reconstructions in general historical linguistics and to conduct exploratory analyses in language
phylogeny. It first reconstructs a proto-system of Gyalrongic preinitials and computes and compares the implicative entropies
between reconstructed and modern systems. In a second step, Mutual Implicative Entropy (MIE) is used to measure genetic distances
between related languages and to generate Neighbornet networks to visualize the subgrouping of Gyalrongic languages. The resulting
networks are in agreement with qualitative historical linguistic analyses and allow adjustments to previous subgroupings obtained
by Bayesian phylogenetic inference. Thus, this method can be used to detect nuances in lower sub-branches, which are sometimes
neglected by lexicon-based methods. Using MIE in historical linguistics is therefore a quick and efficient means of checking the
effectiveness of reconstructions and establishing the accurate preliminary shape of language subgrouping.
A diachronic account of Present Day Standard Danish stop gradation
Authors: Puggaard-Rode Rasmus , Jørgensen Henrik , Horslund Camilla Søballe 
Published: December 2024

Abstract
In certain contexts, Present Day Standard Danish displays an unusual pattern of alternations between voiceless
stops and semivowels often referred to as stop gradation. Stop gradation is traditionally considered a synchronic
phonological process, but evidence for this analysis is based almost exclusively on non-productive morphology. Here, we argue that
the structural generalization captured by a synchronic analysis is better accounted for with reference to the history of Danish,
and to well-understood constraints on articulation and perception which led to prosodically conditioned chain shifts and mergers
through gradual, continuous changes in the realization of consonant allophones. Inspired by the change-chance-choice
model of sound change in Evolutionary Phonology, we outline the historical trajectory that led to the synchronic stop gradation
patterns, and the well-known phonetic pressures underlying them; these pressures pulled the allophone distributions of stops in
different prosodic contexts in very different directions.
Topological rainbow trapping of sound waves in synthesized three-dimensional space for square lattice
Authors: Lu 卢 Jie-Yu 杰煜 , Li 李 Shi-Feng 石峰 , Li 李 Xin 鑫 , Zou 邹 Xin-Ye 欣晔 , Cheng 程 Jian-Chun 建春 
Published: December 2024

Abstract
The three-dimensional (3D) synthetic space offers a platform for exploring the valley Hall insulator, which is usually constructed in graphene lattice. Here, based on the valley transports in the square lattice, we construct a synthetic space by treating the rotation angle as the third dimension and observe the emergent Weyl points in this synthetic space. Since the construction of synthetic Weyl points results in the formation of edge states between the phononic crystal (PC) and the hard boundary, and the factors of rotation angle and the distance from the PC to the hard boundary affect the frequency of these edge states, we can construct topological rainbow concentrator based on the above principles. We conduct a comprehensive numerical and experimental study to explore the characteristics of topological rainbow concentrators. This work may play a driving role in the development of topological rainbow devices.
Elastic properties of Cu–6wt% Ag alloy wires for pulsed magnets investigated by ultrasonic techniques
Authors: Li 李 Ziyu 滋雨 , Gu 顾 Tianyi 天逸 , Wei 魏 Wenqi 文琦 , Yuan 袁 Yang 洋 , Wang 王 Zhuo 卓 , Luo 罗 Kangjian 康健 , Pan 潘 Yupeng 宇鹏 , Xie 谢 Jianfeng 剑峰 , Zhang 张 Shaozhe 绍哲 , Peng 彭 Tao 涛 , Liu 柳 Lin 林 , Chen 谌 Qi 祺 , Han 韩 Xiaotao 小涛 , Luo 罗 Yongkang 永康 , Li 李 Liang 亮 
Published: December 2024

Abstract
Conductor materials with good mechanical performance as well as high electrical and thermal conductivities are particularly important to break through the current bottle-neck limit (∼100 T) of pulsed magnets. Here, we perform systematic studies on the elastic properties of the Cu–6wt% Ag alloy wire, which is a promising candidate material for the new-generation pulsed magnets, by employing two independent ultrasonic techniques, i.e., resonant ultrasound spectroscopy (RUS) and ultrasound pulse-echo experiments. Our RUS measurements manifest that the elastic properties of the Cu–6wt% Ag alloy wires can be improved by an electroplastic drawing procedure as compared with the conventional cold drawing. We also take this opportunity to test the availability of our newly-built ultrasound pulse-echo facility at the Wuhan National High Magnetic Field Center (WHMFC, China), and the results suggest that the elastic performance of the electroplastically-drawn Cu–6wt% Ag alloy wire remains excellent without anomalous softening under extreme conditions, e.g., in ultra-high magnetic field up to 50 T and nitrogen or helium cryogenic liquids.
Development of a novel bunch oscillation recorder with RFSoC technology
Authors: Nomaru R. , Mitsuka G. , Ruckman L. , Herbst R. 
Published: December 2024

Abstract
The SuperKEKB accelerator is designed to achieve
unprecedented luminosity levels, but this goal is currently hindered
by Sudden Beam Loss (SBL) events. These events not only obstruct
luminosity improvement but also pose a significant risk to
accelerator components, the Belle II detectors, and the
superconducting focusing system, potentially leading to severe
damage and quenching of the superconducting system. To address this
critical challenge, we have developed a novel Bunch Oscillation
Recorder (BOR) based on RFSoC technology. The BOR has demonstrated
high precision with a position resolution of 0.03 mm, making it a
powerful tool for real-time beam monitoring. In its initial
deployment, the BOR successfully recorded multiple SBL events,
providing valuable data for further analysis. By strategically
positioning BORs at the suspected points of SBL origin, we aim to
directly identify sources of beam instability. We anticipate that
this portable, high-speed BOR monitor will play a crucial role in
resolving the SBL issue, ultimately helping achieve SuperKEKB's
luminosity targets.
Characteristics of radio-frequency magnetron sputtering with Ag target operated near the electron series resonance oscillation
Authors: YE 叶 Chao 超 
Published: December 2024

Abstract
The discharge and plasma characteristics of Ag magnetron sputtering discharge operated near the electron series resonance (ESR) oscillation, which was excited using the driving frequency of 27.12 MHz, was investigated. The imaginary part of impedance was found to undergo a transition from capacitive to inductive on varying radio-frequency (RF) power, and the conditions for the ESR excitation were satisfied. The current–voltage (I–V) characteristic of discharge showed that the lower discharge voltage with higher current was an important feature of RF magnetron sputtering operated near the ESR oscillation, which was caused by the small impedance Z originated from the mutual compensation between the sheath capacitive reactance and the plasma inductive reactance. The higher electron temperature, ion flux density and ion energy as well as the moderate electron density were obtained. The interaction of higher energy ions on substrate surface improved the crystallographic quality of Ag films. Therefore, the27.12 MHz magnetron sputtering operated near the ESR oscillation has better deposition characteristics than that of commercial 13.56 MHz RF magnetron sputtering.
Exploring the Beneficial Effects of Green Knowledge Management on Corporate Sustainable Development: The Mediating Roles of Green Innovation and Green Human Resource Management
Authors: Zhou Xiaochao , Firdaus Hafsa Binta Rinty , Gazi Md. Abu Issa , Omer Adam Mohamed , Masud Abdullah Al , Islam Mohammad Muzahidul , Senathirajah Rahman bin S 
Published: December 2024

Abstract
Purpose -The current research aims to develop and test a multidimensional model of green knowledge management using second-order psychometric constructs and determine whether green innovation and green human resource management mediates the corporate sustainable development.&#xD;Design/Methodology/Approach-The target population of the current study comprises manufacturing and service firms in Bangladesh. Data was collected using structured questionnaires, and 450 final samples were analyzed using structural equation modeling.&#xD;Findings -The results show that corporate sustainable development is positively impacted by the green knowledge management factor. The research also discovered evidence of an interaction between green knowledge management and corporate sustainable development that is mediated by green innovation and green human resource management. &#xD;Originality / value -The theoretical conclusion of the research is that this multidimensional green knowledge management model is suitable for gauging corporate sustainable development in developing nations as well as industrialized ones, and it may also be applied to other service sectors. Our primary impression is to emphasize the critical importance of incorporating "green" practices into the management system to facilitate corporate sustainable development. This study demonstrates a clear relationship between green human resource management and corporate sustainable development which will the practitioners to create efficient green knowledge management strategies.&#xD;Implications - The model proposed in this study holds significant implications for Bangladesh's policymakers and management authorities, guiding their efforts in achieving sustainable development goals. The article argues that there is a strategic need for sustainable development in greening management systems, rather than only seeing it as an ethical or regulatory obligation.&#xD;
Tropical cyclones in Bangladesh: retrospective analysis of storm information, disaster statistics, and preparedness
Authors: Islam Md. Rezuanul 
Published: December 2024

Abstract
Tropical cyclones (TCs) have historically had far-reaching impacts on livelihoods and vulnerable coastal communities in Bangladesh. Characterizing and understanding the complex and multifaceted nature of TCs is essential for identifying gaps and opportunities to enhance the effectiveness of disaster management practices. This study advances our understanding of TC dynamics in Bangladesh by conducting an integrated analysis of disaster statistics, preparedness measures, and meteorological variables for all landfalling TCs from 1979 to 2022. Our findings indicate that while the frequency of TCs, their meteorological characteristics (e.g., intensity), and related human health and economic impact trends at national scale have remained relatively constant, the spatial impact footprint induced by a single TC has increased. This rise can be attributed to increased coastal exposures including population and assets and improved reporting of smaller-scale disasters at the sub-national level. During 2000–2013, substantial funding shortfalls for addressing disaster risk were noted, with the country’s disaster management budget heavily dependent on humanitarian and foreign aid. Although there have been fewer fatalities in recent years due to improvements in soft measures, challenges remain, including deficiencies in implementing state-of-the-art impact-based early warning systems and limited disaster management funding, especially during years with major TC disaster events. These findings underscore the complex interplay between meteorological hazards, societal exposure, and vulnerabilities, highlighting the challenges of managing disaster risk in Bangladesh.
An intensified northern goshawk optimization algorithm for solving optimization problems
Authors: Wang Xiaowei 
Published: December 2024

Abstract
To enhance the performance of the Northern Goshawk Optimization (NGO) algorithm, which has limitations such as inadequate exploration, slow convergence rates, and susceptibility to local optima in later iterations, an Improved Northern Goshawk Optimization (INGO) algorithm has been developed. The INGO approach employs a good-point set strategy to obtain a high-quality initial population, generating evenly distributed solutions within the search domain. Incorporating an axial mapping differential variation method facilitates the creation of candidate solutions, broadening the scope for identifying optimal solutions, enhancing the algorithm’s ability to avoid local optima, and strengthening its global exploration capabilities. By implementing a Gaussian differential variation strategy, the diversity within the population is increased, which accelerates the convergence rate and improves the algorithm’s local search efficiency. For performance evaluation, the INGO algorithm was benchmarked against seven contemporary optimization algorithms using 65 test functions from the CEC2014, CEC2017, and CEC2022 suites. The outcomes indicate that INGO exhibits superior performance regarding convergence velocity, search precision, and stability when compared to the other algorithms.
An MCDM approach for selection of a biomass fuel for a natural convection dryer based on thermo-economic-environmental analysis
Authors: Deb Arnab , Mandal Sandip Kumar , Das Ghatak Manjula 
Published: December 2024

Abstract
Efficient selection of optimal biomass fuel for the developed natural convection dryers is essential for enhanced drying performance, ensuring environmental and economic viability. This research applies a Multi-Criteria Decision-Making (MCDM) approach based on the Analytical Hierarchy Process (AHP) and the Technique for Order of Preference by Similarity to an Ideal Solution (TOPSIS) to analyze thermo-economic-environmental factors for fuel selection. By preparing four different biomass pellets and evaluating these based on heat generation, environmental impact, and cost-effectiveness, the study aims to determine the best fuel for the dryer. The results indicate that the drying system can sustain higher temperatures for extended periods, and exhibit excellent energy and exergy efficiency. The drying system experiences reduced exergy losses of 28.82 to 31.98 W. The financial assessment reveals a payback period of 0.34 years for the dryer. The exhaust gas contains 1703–1928 ppm of CO, 32–44 ppm of NO and 5.3–7.2 ppm of SO2. The MCDM approach identifies the 80:10:10 mixture of sawdust, charcoal, and burnt engine oil as more effective blend of biomass. The study concludes that using biomass pellets with appropriate mixing ratios as fuel in the developed natural convection dryer significantly enhances its drying performance and sustainability.
Design and test of self-propelled sphaeroides globus spreading machine
Authors: Zhen Wang , Weiwei Bai , Xinran Li , Weizhong Xiao , Weili Kong , Yuting Zhang , Qin Liu , Xiao Cui 
Published: December 2024

Abstract
This study presented the development and testing of a self-propelled spreading machine specifically designed for Sphaeroides globus cultivation. Traditional manual spreading methods were labor-intensive, inefficient, and inconsistent, often leading to increased labor costs and variability in spreading quality. The newly designed machine aimed to address these challenges by automating the spreading process, enhancing productivity, and reducing labor dependency. The machine, comprising a power unit, material box, scraper feeding mechanism, stirring device, and feeding device, was subjected to rigorous orthogonal testing to determine the optimal operational parameters. The identified parameters—discharging port height at 147 mm, driving wheel speed at 8 r min−1, and feeding port spacing at 186 mm—were critical in achieving uniform material distribution. Field tests conducted at the Shangqiu Henan Jinlong Mushroom Planting Base demonstrated the machine’s ability to deliver high-quality, uniform spreading, effectively replacing the labor of 6–8 individuals and improving spreading efficiency by 5–10 times compared to manual methods. The results highlighted the machine’s significant economic benefits, reducing operational costs and increasing productivity. The innovative design features, including a precise adjusting plate mechanism, scraper feeding mechanism, and stirring device, contributed to its high performance and reliability. The spreading machine met the requirements for Sphaeroides globus cultivation, providing a practical and efficient solution for large-scale operations. In summary, the self-propelled spreading machine represents a substantial advancement in mechanized fungi cultivation, offering improved productivity, reduced labor costs, and significant economic benefits. Future enhancements should focus on increasing material box capacity, incorporating advanced sensors, and conducting broader field tests to further refine the design, ensuring its viability for large-scale agricultural operations.
Optimizing surface roughness in end milling of additively and conventionally manufactured components of 18Ni300 maraging steel with minimum quantity lubrication
Authors: Sohail Syed , Reddy B Chandra Mohan 
Published: December 2024

Abstract
This work examines the impact of Minimum Quantity Lubrication (MQL) on the surface roughness optimization during end milling of 18Ni300 maraging steel components produced through conventional manufacturing (CM) and additive manufacturing (AM). It investigates the effects of cutting speed, feed per tooth, and cut depth on surface roughness of the components under as-printed (ASP) and direct aging heat-treated (DAT) conditions for various AM build orientations (0, 45, and 90 degree) and CM. AM components’ comparisons are drawn with the CM components in the as-cast (ASC) and DAT conditions. The results show that the lowest surface roughness of 0.125 μm occurs with 0 degree AM-DAT at a cutting speed of 50 m min−1, a feed rate of 0.01 mm per tooth, and a depth of cut of 0.1 mm. Surface roughness outcomes correlate with microstructural features and surface morphologies, evaluated using microscopic techniques. The feed marks are more closely spaced for a superior surface finish of 0.125 μm compared to other roughness values. Metallurgical studies were conducted on both the untreated group and the group that underwent heat treatment. After aging, maraging steel exhibits refined microstructure and a reduced number of defects were found in DAT-processed milled specimens. Consequently, the surface finish values are better for all the cases of AM-DAT and CM-DAT in comparison to all the cases of as-printed AM and as-cast CM. It was observed that the application of MQL, although able to achieve better surface quality, was not very effective in suppressing the growth trend of surface roughness with increasing feed conditions across all build orientations and sample conditions.