bluuebunny/crossref_metadata_2025_split huggingface dataset:
An adversarial network reinforcement method for power data time series generation based on knowledge transfer and Rayleigh differential privacy
Authors: Zhai Feng , Li Baofeng , Liang Xiaobing , Qin Yu , Ji Wen 
Published: August 2024

Abstract
In order to solve the problem of sensitive information leakage of power data in machine learning and artificial intelligence processing, this paper proposes a method of civic-text data reinforcement based on time series generation adversarial network, which combines knowledge transfer and Rényi differential privacy protection framework to balance privacy and availability, while improving the accuracy of the model. First, the generative adversarial network generates training data that is similar to the real data but secure through adversarial learning, ensuring that even if the data is stolen, the original information cannot be inferred. Secondly, through the integration of recurrent neural network training and autoencoder, the dynamic and static characteristics of the power load data can be effectively captured, and the high dimension of the learning space can be reduced. In addition, knowledge distillation technology is used to guide the generator of training student models through a powerful teacher network of knowledge transfer, improving the diversity and quality of the generated data. Finally, from the four aspects of privacy, data similarity and diversity, and practicability, the practical application value and potential of the framework for electricity consumption data are comprehensively evaluated.
A wide area backup protection algorithm based on fault current comparison and evidence theory fusion
Authors: Hu Ting , Jia Ke , Bi Tianshu , Dong Xuezheng 
Published: August 2024

Abstract
Wide-area backup protection using information in the area to determine the fault location comprehensively requires a high fault tolerance ability. However, the traditional wide area backup protection algorithm based on evidence theory assigns a separate value to each adjacent line for its fault probability, and the performance of the algorithm degrades in the condition of more information loss or errors. To solve these problems, this paper proposed a wide area backup protection algorithm based on fault current comparison and improved evidence theory fusion. The proposed method first selects the suspected fault lines by sequence voltage sorting. Then, the information on the fault current sequence component and traditional protection action is collected and preprocessed to form the evidence set, and its basic probability assignment is calculated. Finally, the improved evidence theory is used for fusion to identify fault lines. Simulation results show that the algorithm can accurately identify fault lines under complex operating conditions, multiple information loss and errors, and has high fault tolerance.
Virtual inertia control of distribution grids under automobile charging and discharging load uncertainty
Authors: Huang Zhifeng , Huang Peng , Ge Jing , Qiu Xi , Fang Ying 
Published: August 2024

Abstract
Automobiles with unstable charging and discharging loads usually have unstable power, frequency, and other parameters of the distribution network. Therefore, a virtual inertia control strategy is proposed to enhance the distribution network’s stability and improve the grid’s voltage quality. This method can enhance the inertia control capability of the grid by incorporating the sag coefficient and SOC control, which in turn achieves the purpose of improving the grid’s reliability. The results show that changing the sag coefficient can enhance the voltage stability to reduce the impact of the battery while incorporating the SOC inertia coefficient control, the distribution grid operation will be more stable, and the power quality will be higher. The new method enhances the stability of voltage load to a certain extent and lays the foundation for the subsequent virtual inertia control technology.
Research on virtual inertia of energy storage systems under different grid-forming control strategies
Authors: Lv Junzhang , Yang Li , Yue Chao , Han Mingliang , Chen Jingyi 
Published: August 2024

Abstract
To reasonably evaluate the support capability of grid-forming energy storage in power systems characterized by “double high” characteristics, it is essential to investigate the factors influencing the virtual inertia of grid-forming energy storage. This paper delves into the relationship between two control strategies of grid-forming energy storage and virtual inertia from an energy perspective. Initially, the operational principle and technological advantages of grid-forming energy storage are analyzed. Subsequently, based on the principles of two grid-forming control strategies, mathematical models for both types of grid-forming energy storage are established, elucidating the physical significance of virtual inertia in grid-forming inverters and revealing the adjustability of virtual inertia. Finally, a microgrid simulation system is constructed in PSCAD to validate the theoretical analysis.
Cascaded H-bridge power carrier communication method based on harmonic injection
Authors: Liu Fang , Liu Jianzhao , Bian Yuanyuan , Geng Qing 
Published: August 2024

Abstract
Scaded H-bridge inverter systems are widely used, but there are complex communication problems between multiple module communications. In this paper, a power carrier communication method injecting the third harmonic is proposed for a single-phase cascaded H-bridge system. The third harmonic is superimposed on the SPWM sinusoidal waveform as a modulating signal and demodulated from the acquired current signals by means of DQ conversion. The baseband input signals are directly observed from the Id and Iq signals. There is no need to add additional communication lines. The method is simple and reduces costs.
Multiple sliding contact of viscoelastic solids: Modelling and experiments
Authors: Torskaya E V , Morozov A V , Stepanov F I 
Published: August 2024

Abstract
The paper presents the results of friction tests of paving slabs in contact with rubber. The roughness of the slabs surface is formed by shot blasting. Some of the samples were slightly polished to simulate wear. The results of roughness measurement were adopted for modeling and used to calculate the effect of surface treatment on the deformation component in sliding friction. The results of modeling and experiments at room temperature have shown that a change in surface roughness affects the deformation mechanism of sliding friction. Static friction of slabs in contact with rubber was also studied in experiments. It is shown that the deformation mechanism of friction in the contact of paving slabs with rubber increases with an increase in the height (Sa, Ssk, Sku) and hybrid (Sdq) roughness parameters. A comparative analysis of friction maps at temperatures from −25 to +60°C was made for samples differing in surface treatment.
On two contact problems for a half-plane with static friction
Authors: Hakobyan V , Hakobyan L , Dashtoyan L 
Published: August 2024

Abstract
Exact solutions of two contact problems are constructed for a half-plane, when a finite number of absolutely rigid flat punches with friction are pressed into the half-plane under the influence of different concentrated loads, and when a periodic system of absolutely rigid flat punches with friction is pressed into the half-plane. It is assumed that friction in contact zones is associated with normal contact pressure by the generalized law of dry friction, in which the coefficient of friction depends on the coordinates of the contacting points of the contacting bodies and is directly proportional to the difference between the coordinates of these points and the coordinates of the middle points of the contact zones. The governing equations of the posed problems were obtained in the form of singular integral equations with variable coefficients relative to the contact pressure and their closed solutions were constructed.
On flexural vibrations of orthotropic strips of variable thickness taken into account of transverse effects with elasticaly built in edges in the presence of axial force
Authors: Gevorgyan G Z , Darbinyan A Z 
Published: August 2024

Abstract
The problem of bending vibrations of orthotropic strips of variable thickness is considered, taking into account transverse effects elastically built in edges in the presence of axial force. The problem was solved using the numerical collocation method. A numerical analysis of the problem was carried out. The problem of Euler stability of orthotropic plate-strips of variable thickness under plane strain conditions is considered, taking into account transverse shear and rotational inertia. The resulting equations make it possible to determine both the frequencies of natural vibrations and the critical values of the axial force at which the plate-strip loses stability. The problems are solved using a modified collocation method under various boundary conditions at the ends and values of geometric and physical parameters characterizing a plate-strip of variable thickness.
Interaction of a bush with a complex internal profile and a coated viscoelastic pipe worn on a rigid cylinder
Authors: Kazakov K E , Parshin D A 
Published: August 2024

Abstract
The present study is devoted to obtaining an analytical solution to the contact problem for a rigid bush and a viscoelastic aging cylindrical coated tube mounted on a rigid shaft or cylinder. A feature of the formulation is the fact that the inner profile of the bush is described by a complex function, which introduces certain difficulties in numerical calculations. The article demonstrates how it is possible to simultaneously take into account both the rheological properties of the layers and the geometric features of the contacting bodies, so that the obtained analytical solution turns out to be effective in real numerical calculations. In the resulting analytical solution, the function describing the inner profile of the bush is included in a separate term. This makes it possible to use a small number of terms of an infinite functional series and at the same time obtain results with high accuracy.
Mechanical properties of aluminum matrix composite reinforced with titanium carbide
Authors: Zemtsova E G , Morozov N F , Semenov B N , Smirnov V M , Venatovskaya L A 
Published: August 2024

Abstract
An original method for the production of metal matrix nanocomposites has been proposed, which consists of depositing carbide structures 4–12 nm thick onto the surface of particles of aluminum powder by molecular layering, mixing the resulting dispersed particles with particles of pure metal in the required concentration, then pressing and sintering the resulting mixture. The resulting workpieces are subjected to intense plastic deformation by high-pressure torsion, which not only significantly reduces porosity, ensures a uniform distribution of reinforcing particles throughout the volume, and destroys carbide shells on the surface of dispersed particles, but also grinds aluminum particles.
Experimental stress-strain curves of the synthesized composites were constructed and the contribution of various hardening mechanisms to the final hardening of the metal matrix composite was assessed.
In metal matrix composites synthesized by this method, with small fractions of the volume content of reinforcing titanium carbide particles (less than 0.1%), almost twofold hardening and a threefold increase in the yield strength are observed with a slight reduction in plastic deformation before failure.
Experimental study of solute diffusion in oscillating flow in a rectangular cell
Authors: Bushueva A , Dyakova V , Polezhaev D 
Published: August 2024

Abstract
The mass transfer of a passive substance dissolved in a fluid in a rectangular Hele–Shaw cell is experimentally studied. We consider mass transfer when the fluid is (i) at rest and (ii) oscillates. In the first case, mass transfer is carried out due to molecular diffusion. The results of measuring the molecular diffusion coefficient of the fluorescent dye Rhodamine B in water are in good agreement with the data obtained by other methods. In the presence of oscillations, the mass transfer rate increases. The comparison of the obtained experimental results with theoretical predictions reveals that the mass transfer is enhanced due to the Taylor dispersion.
Asymptotics of solutions to systems of (pseudo)differential equations with localized right-hand sides
Authors: Dobrokhotov S Yu , Klevin A I , Nazaikinskii V E , Tolchennikov A A 
Published: August 2024

Abstract
The article describes a method for constructing semiclassical asymptotic solutions of multidimensional (pseudo)differential partial differential equations with localized right-hand sides. The method is based on the asymptotic reduction of vector problems (under certain additional conditions) to scalar (pseudo)differential problems, for which efficient asymptotic formulas have recently been constructed. The method is based on the Feynman–Maslov operator calculus. Even if the original problems are stated for differential equations, the operators in reduced problems, as a rule, turn out to be pseudodifferential. Further, nontrivial problems of calculating operator symbols in the reduced scalar problems arise in the reduction process. We discuss approaches to the transformation of these symbols so as to enable their effective use when solving real problems. The method is illustrated by several physical examples.
Peculiarities of icing in a flow with supercooled droplets and ice crystals
Authors: Amelyushkin I A , Kudrov M A , Kuleshov P S 
Published: August 2024

Abstract
New results of aircraft icing are obtained. New mathematical models of physical phenomena are formulated. Original construction of adaptive wing was invented, developed and prototypes were built. New algorithm of aircrafts’ surface with nanorelief are developed. Parametric studies of aircraft icing peculiarities were carried out.
Mathematical modeling of insulating coating of thermal conductivity including body’s own radiation and non-local spatial effects
Authors: Kuvyrkin G N , Savelyeva I Y , Safronov Y A , Sokolov A A 
Published: August 2024

Abstract
In this paper thermal conductivity analysis of insulating coating is discussed. The general partial differential thermal conductivity equation is used with consideration to nonlocal boundary effects. We relying on the Eringen’s approach involves heat-flow vector transformation using nonlocal influence function and weight coefficients. Also presented model includes own surface radiation of the coating.
Mineralogy and Hydrothermal Fluids Characteristics of the Mekarbakti Low Sulfidation Epithermal Gold Prospect at Garut Regency, West Java, Indonesia
Authors: Imawan L , Titisari A D , Setiawan I 
Published: August 2024

Abstract
Mekarbakti prospect is situated in the western sector of Java Island which tectonically lies within the W-E trending Sunda-Banda magmatic arc. This arc hosts numerous prospects for ore mineralization with various types of mineral deposits, one of which is epithermal that found in the study area. The Mekarbakti prospect is located close to the Arinem prospect, about 8 km to the east, which is confirmed as a low sulfidation epithermal deposit type. Arinem is proven to be economical to mine, thus it becomes interesting to conduct study on the Mekarbakti prospect, to elucidate its mineralization model. This paper is dealing with the characteristics of hydrothermal alteration using petrographic and X-Ray Diffraction (XRD) to identify the alteration minerals, using ore microscopy analysis to identify the type of ore minerals, and fluid inclusion to reveal the hydrothermal fluid characteristics. The geological condition of the study area is composed of andesite lava, andesite breccia, tuff, lapilli, and andesite intrusion. The distribution of silicification alteration is controlled by geological structures with an NW-SE pattern, while argillic and propylitic alterations tend to have a gradient trend towards silicification alteration. Propylitic alteration is characterized by chlorite+illite+smectite±epidote. Argilic alteration is marked by the presence of clay minerals such as kaolinite+illite+smectite+quartz. Silicification alteration typified by quartz+kaolinite+diaspore+illite. Ore mineralization in the study area is associated with massive, brecciated, comb, cockade and, stockwork vein textures. Ore and metalliferous minerals are found as pyrite, hematite, goethite, chalcopyrite, sphalerite, galena, pyrrhotite, covellite, chalcocite, acanthite, native gold, and native silver. Generally, the mean homogenization temperature in the research area ranged from 248.05 – 266.12 °C, with salinity ranged from 1.01 – 1.68 wt.% NaCl eq. The epithermal deposit in the study area is classified as deep low sulfidation epithermal deposit specifically in transition between base metal and precious metal interval.
Distribution of Manganese Ore Deposit in Sukaagung Village, Tanggamus Regency, Lampung
Authors: Christin Natalia Happy , Widiyawati  , Jati Widiatama Angga , Naufan Hendrawan Rezki , Ananda Gita Christi Dea , Tri Kemala Arini , Nur Faqih An Nahar Rikza 
Published: August 2024

Abstract
Manganese ore deposits are one of the most widely used metal alloys in everyday life. Generally, manganese ore deposits are present as residual deposits along with iron ore at certain pH and Eh conditions. These deposits can come from the chemical weathering of crystalline schist, limestone, and dolomite rocks or earlier manganese deposits. In Lampung, the presence of manganese ore can be found in Sukaagung Village, Tanggamus Regency, but little research has been done to determine the distribution and potential of manganese ore in this area. Therefore, this study aims to determine manganese ore distribution and enrichment process in the study area using field data and petrography. In general, manganese ore deposits in Sukaagung Village are present as veins that fill fractures and nodules. Manganese ore deposits that were present as fracture fillers were found intersecting marble, quartzite, and mica schist of the Complex of Gunungkasih Tak Terpisahkan, tuffaceous siltstone from Menanga Formation, and the lapilli tuff and andesite of the Hulusimpang Formation. These deposits are present in manganese as botryoidal and dendritic forms in rock fractures. Meanwhile, manganese ore deposits in the form of nodules are present in submarine volcanic sedimentary rocks in the Menanga Formation. The presence of manganese ore deposits in the study area is thought to be the result of the leaching of manganese elements from the banded iron formation which is associated with the Permian-Cretaceous magmatism, hydrothermal submarine, and rift basin. The acidic fluid dissolves other elements and leaves manganese ore as an economical mineral. Manganese ore is then carried by subsurface fluids, filling fractures in Paleozoic-Tertiary rocks. Even though the distribution of manganese ore in Sukaagung Village is quite wide, further research is needed to determine the potential and reserves of manganese ore in the study area.
Preliminary Study of the Graphite Phyllite Rock from the Luk Ulo Melange Complex, Central Java, Indonesia
Authors: Isyqi  , Imam Setiawan Nugroho , Anggara Ferian 
Published: August 2024

Abstract
Phyllite rocks containing graphite minerals are exposed at the Luk Ulo Melange Complex (LUMC), Central Java, Indonesia. This study aims to determine the occurrence, petrographic, and geochemical characteristics of the LUMC phyllite rocks. The method used in this research consists of field observation and laboratory analysis, including petrographic and geochemical analysis using ICP AES/MS. Field observations were carried out in six locations, namely in the Karangsambung, Totogan, Duren, Kebondalem, Kebutuhjurang, and Pesangkalan villages. The phyllites are present as blocks in LUMC with 2 to >10 m in dimension and are associated with other metamorphic rocks such as greenschist, quartzite, and marble. LUMC phyllite rock has a fresh grey-black color, phyllitic foliated structure, and lepidoblastic texture. The main minerals are graphite, muscovite, quartz, and chlorite. Whole rock geochemical analysis was carried out on a phyllite sample from the Karangsambung area and showed that the major elements that dominated were SiO2 (69 wt%), Al2O3 (13 wt%), and Fe2O3 (5.78 wt%) that typical of metapelite rocks.
Effectiveness of silicomanganese smelting utilizing high-ash coal
Authors: Makhambetov Yerbolat , Akhmetov Amankeldy , Myngzhassar Yesmurat , Toleukadyr Ruslan , Burumbayev Azamat , Zhakan Armat , Kutzhanov Magzhan 
Published: August 2024

Abstract
This study investigates the utilization of high-ash coal as an alternative reductant in the smelting of silicomanganese, aiming to reduce the carbon footprint of traditional coke-based processes. Experiments were conducted using an ore-thermal furnace with a transformer power of 200 kVA to simulate industrial conditions. The charge consisted of manganese ore (Mn - 36%), slag from refined ferromanganese production (MnO - 25%), and high-ash coal (ash content 40%–50%). Chemical analysis of the produced alloy showed a composition of Mn–70%, Si–20%, C–1.28%, P–0.06%, and S–0.05%, meeting the standards for silicomanganese. The results demonstrate that high-ash coal can replace coke without compromising the quality of the alloy. This approach not only indirect CO2 emissions but also leverages the abundant availability of high-ash coal, which is often discarded as waste. The study highlights the potential for significant environmental benefits and cost savings, making this method a viable alternative for sustainable industrial practices. The findings support the industrial application of high-ash coal in silicomanganese production, contributing to more eco-friendly and economically feasible metallurgical processes.
Harm to Women and Political Violence
Authors: Karim Sabrina , Hill, Jr. Daniel W 
Published: August 2024

Abstract
Chapter 5 explores the connection between harm to women and political violence. The chapter starts out by conceptualizing harm to women and developing a measure for it. The rest of the chapter is focused on theorizing about the connection between harm to women and interstate war, intrastate conflict, repression, and terrorism. The main argument in this chapter is that violence begets violence both at the societal level and the individual level. When states do not value their citizens, or rather when they allow both structural violence and physical violence to occur, their cost to use violence to resolve conflict is lower. At the individual level, when more people witness violence in the home, they are more likely to use violence to resolve group-level disputes. Finally, harm to women creates a shortage of women, which can lead to more violence at the societal level. The chapter finds that harm to women is associated with a higher likelihood of inter- and intrastate conflict.
Beliefs about Women’s Gender Roles and Political Violence
Authors: Karim Sabrina , Hill, Jr. Daniel W 
Published: August 2024

Abstract
Chapter 6 explores the connection between beliefs about women’s gender roles and political violence. The chapter starts out by conceptualizing beliefs about women’s gender roles and developing a measure for it. The rest of the chapter is focused on theorizing about the connection between beliefs about women’s gender roles and interstate war, intrastate conflict, repression, and terrorism. There are two main theories. The first is that when people hold rigid beliefs about gender roles, they are likely to value the status quo and may use violence to uphold it. The second theory posits that rigid beliefs about gender roles is a gateway for recruitment into violent groups as people who hold such beliefs may be more susceptible to appeals for violent political action. The chapter finds that there is a correlation between societal-level beliefs about gender roles and terrorism.