bluuebunny/crossref_metadata_2025_split huggingface dataset:
Topology optimization of static ring of a spiral dehydrator
Authors: Cheng Qianqian , Zhao Jing , Wei Tianlu , Wang Shuangjun 
Published: October 2024

Abstract
The static ring of the static ring filter screen of the self-designed spiral dehydrator is studied. According to the load and constraint of the static ring in the working process, the maximum total deformation of the static ring is obtained. Aiming at the lightweight requirement of the static ring, topological optimization of the static ring is carried out by using the variable density method based on static analysis, and the mathematical model of optimization is established. After optimization, the reasonable structure of the static ring is obtained, and its static performance meets the working requirements. Under the normal working frequency excitation, the harmonic response analysis shows that the maximum amplitude of the static ring is 0.535 mm. After optimization, the static ring mass is reduced by 9.7%, and the lightweight effect is remarkable. The research results provide a feasible method for the lightweight design of static rings.
Transient numerical simulation and characteristic study of flow field in high-pressure piston pump
Authors: Zheng Xiaofeng 
Published: October 2024

Abstract
As the core component of a mechanical system, the performance of the hydraulic pump, the power output core of the machine, is of great significance for the functional implementation of engineering equipment. The fluid motion state of a plunger rotary axial pump during flow distribution is very complex, especially when the pump rotates at high pressure and speed. The cavitation phenomenon can cause abnormal sound and vibration, seriously affecting its efficiency and service life. Taking the high-pressure plunger rotary axial pump as the research object, a geometric model of the fluid medium in the flow channel inside the pump was established. The motion law and characteristics of the flow field inside the pump were revealed through numerical simulation, laying the foundation for optimizing and improving the internal structure and reducing cavitation damage.
Research on energy harvesting of bi-stable magnetoelastic piezoelectric cantilever beam
Authors: Zhao Xingfang , Chen Huaping , Jiang Fan , Qin Jian 
Published: October 2024

Abstract
This article designs and explores an innovative magneto elastic bistable piezoelectric cantilever beam power generation system, which cleverly integrates a magnetic repulsion mechanism to enhance energy harvesting efficiency and deeply considers the geometric nonlinear effects of the structure to further optimize performance. Specifically, the system achieves efficient capture and conversion of energy under specific conditions by constructing a bistable piezoelectric energy harvester (BPEH) based on magnetic repulsion. At the theoretical analysis level, this article accurately derives a strain relationship model that includes geometric nonlinear effects. The step is crucial for accurately describing the behavior of cantilever beams in complex dynamic environments. Furthermore, with the help of the generalized Hamiltonian principle and Lagrange equation, this paper successfully established the dynamic equation system of the BPEH, laying a solid theoretical foundation for subsequent numerical analysis and optimization design. In the numerical research section, this article systematically explores the influence of external force on the motion characteristics and energy harvesting performance of BPEH oscillators. The research results show that by adjusting to the optimal excitation amplitude, the energy conversion efficiency of BPEH has been significantly improved, verifying the effectiveness and superiority of the system design. In addition, this article also deeply discusses the complex impact of geometric nonlinearity on the performance of BPEH oscillators: Under weak geometric nonlinearity conditions, the oscillator exhibits a stable trap motion mode, which is conducive to stable energy harvesting. When geometric nonlinearity is enhanced to a certain extent, the system may exhibit large-scale chaotic motion characteristics, which poses challenges to the stability and efficiency of energy harvesting.
Failure analysis of bow loading hose under tensile and bending loads
Authors: Yang Tianxiao 
Published: October 2024

Abstract
Offshore crude oil offloading hoses are widely used in oil and gas transportation between the FPSO and oil tankers. The hoses are mainly affected by tensile and bending loads during the bow loading operation and are easily prone to failure under the combined tensile and bending loads. Based on this, the ABAQUS software was used to establish a nonlinear finite element model under tensile and bending loads and analyze the bending failure modes of the hose under different initial tensile loads. The results show that the crushing area of the hose under bending load occurs within the three-pitch range of the middle part of the hose. As the tensile load increases, the bending angle of the hose shows an increasing trend. Under different initial tensile loads, when the hose bend reaches 5.73°, the Von Mises stress of the hose helical wire reaches 766MPa. Appropriately increasing the initial tensile load will help avoid the ultimate collapse of the hose. The research results provide suggestions for the practical application of offloading delivery hoses.
Effect of blade parameters on lift performance of drum-type vertical cross-flow fan
Authors: Wang Sheng , Wang Xiaoyi , Chen Hang , Qiu Zhizhen 
Published: October 2024

Abstract
The drum-type vertical cross-flow fan represents a novel approach to fan-wing technology. By re-configuring the traditional cross-flow fan in a vertical orientation, the symmetrical end plate design on both sides is transformed into an asymmetric structure. This modification aims to harness and optimize the axial force generated. Accordingly, this study delves into the development of a drum-type vertical cross-flow fan model. Through numerical simulation, we assess the impact of blade parameters on lift performance. The findings highlight that factors such as blade inclination angle, blade shape, blade diameter, and blade quantity all exert influence on lift force. A blade tilt of 15° around the impeller’s rotation direction along the lower edge, for instance, amplifies lift force by 26.73%. Arc-shaped blades along the wall contribute to heightened lift, while an increase in impeller diameter leads to a significant lift augmentation. Moreover, the presence of additional blades induces peak lift values, elevating lift from 43.31 N to 58.37 N.
Multi-objective design optimization for aerodynamic performance of centrifugal compressor impeller
Authors: Li Chenpeng , Zhou Yijun , Li Yongzhe , Shao Qin 
Published: October 2024

Abstract
Enhancing the performance of the centrifugal compressor system by optimizing the geometric parameters of the impeller is essential for achieving high thermodynamic efficiency and reducing energy costs. This study proposes a multi-objective optimization design approach to improve the pressure ratio and efficiency of centrifugal compressor impellers. The method combines the advantage of numerical simulation with the response surface method so that a reduction of design effort can be achieved. The Krain impeller is used to validate the optimization platform. The benefit of the developed approach is two-fold. On the one hand, the optimized design increased the pressure ratio significantly to the initial design under different working conditions. On the other hand, the impeller approach offers a reference for designers to optimize the design better. The outcomes demonstrate the viability of the approach, and the integrated optimization platform is reliable.
Simulation analysis of flow and acoustic characteristics of exhaust muffler of rolling rotor compressor
Authors: Hu Zhihong , Zhang Chaolei , Chen Lixiao 
Published: October 2024

Abstract
To investigate the influence characteristics of the size and height of the muffler exhaust hole on its pressure loss and transmission loss, this paper constructs a finite element model of the muffler of the rolling rotor compressor, and conducts numerical simulation analysis on the acoustic performance and resistance characteristics of the model. The simulation results showed that as the height of the muffler increased, its internal pressure loss decreased significantly, and its ability to reduce low-frequency noise was also considerably improved. The increase in exhaust hole diameter will also reduce the pressure loss, but the pressure loss is very low after increasing the hole diameter. In the frequency range of 400 ∼ 850 Hz, the noise reduction effect of the muffler decreases with the increase of the aperture, and the influence of other frequency ranges on the transmission loss is very small. The research results have certain reference values for the design and structural optimization of mufflers.
Subwavelength quantum Hall spin effects in spatially elliptical coiled phononic crystals based on the local resonance principle
Authors: Li Shiwei , Chen Congying , Tang Qixiang 
Published: October 2024

Abstract
Aiming to obtain a spatial helical square lattice with a subwavelength structure and quantum spin Hall effect, we have designed a spatially coiled square lattice with a subwavelength structure and quantum Hall effect. By adjusting the angle θ to break its nonpoint group symmetry, the quantum spin Hall effect is obtained by inducing the inversion of the energy bands. This serves as a basis for investigating its edge states. Through this study, we obtain a second-order topological insulator with a one-dimensional edge and a two-dimensional corner state. Finally, we use the topological properties to study its energy loss in transmitting different paths. This demonstrates that paths of different topological phases have high energy transfer efficiency.
Kinematic analysis of 3-RSR&4R hybrid mechanism
Authors: Meng Zhiyong , Qi Yang 
Published: October 2024

Abstract
A hybrid mechanism features serial mechanism flexibility, a large workspace, parallel mechanism stabilization, and high carrying capacity, combining the advantages of series and parallel mechanisms. However, the positive kinematic analysis is more complex. Proposing a new hybrid mechanism 3-RSR&4R begins by describing the institutional characteristics. Second, the positive kinematics are analyzed according to the structural features and modeling positive solutions. Finally, it is verified by numerical arithmetic examples, comparing and analyzing the theoretical results with MATLAB simulation results. The results show that the constructed positive kinematic model is correct.
Temperature field simulation analysis for hot blast valve of blast furnace
Authors: Xu Honghai , Gao Jie 
Published: October 2024

Abstract
The hot blast valve of the blast furnace was studied, and combined with the theory of fluid-solid coupling heat transfer, Fluent software was used to simulate and analyze the temperature field of the hot blast valve of the blast furnace under two working conditions: fully opened and fully closed. The analysis result showed that during the fully opened condition of the hot blast valve, the highest temperature of the valve body reached 1, 332.3°C, which is located on the refractory surface of the hot-air valve duct. The highest temperature of the valve plate is 837.2°C, which is located on the refractory surface on the leeward side of the valve plate. During the fully closed condition, the highest temperature of the valve body is 1, 300°C, which is located on the refractory surface near the upwind side of the valve plate. The highest temperature of the valve plate is 839.9°C, which is located on the refractory surface on the windward side of the valve plate. During the opening-supplying-closing process of the hot blast valve, the temperature change at the bottom outer edge of the valve plate is up to 370°C. The research results have certain guiding significance for the overall structural design of hot blast valves, and provide data for the analysis of thermal deformation and structural strength of hot blast valves.
Simulation and analysis of firing accuracy of remote control weapon station
Authors: Jiao Renlei , Pan Xiaobin , Zhou Qiang , Di Fang 
Published: October 2024

Abstract
Muzzle disturbance and fire control system error are the main factors affecting the firing accuracy of remote control weapon stations. In order to study the influence of muzzle disturbance on firing accuracy, this paper establishes a rigid-flexible coupling dynamic virtual prototype model of a remote control weapon station based on finite element theory. On this basis, the firing accuracy of the weapon station under the effect of muzzle disturbance is simulated and analyzed, the fire control system error is calculated, and then the firing accuracy of the weapon system is obtained. Further on, compared with the firing accuracy test, the rationality of the system structure design and the accuracy of the fire control system design are verified.
Wear simulation of pin-on-disc sliding wear test
Authors: Xie Jinhua , Li Peng , Qian Zhenghua , Qian Zhi 
Published: October 2024

Abstract
In this paper, the wear simulation of the pin-on-disc sliding wear test was performed by using the FEA software Abaqus. The wear depth of the pin sample was obtained by using Abaqus/Python secondary development technology based on Archard wear theory to calculate the surface node wear depth and control the wear simulation process, and by using Abaqus/ALE adaptive meshing technology to update the surface contour and the mesh information. To obtain the wear rate coefficient and verify the validity of the present method, the pin-on-disc sliding wear test and simulation were carried out, and the wear depth of the pin sample was compared. Based on this method, the influence of different loads on the wear of the pin sample is studied. The results show that the wear depth of the pin sample at each load is not the same, and the wear depth increases with increasing load at an increasing rate.
Power, Social Inequities, and the Conversational Theory
Authors: McKenna Michael 
Published: October 2024

Abstract
This chapter challenges P. F. Strawson’s claim that we all demand a reasonable degree of good will from one another. This is not true. Some from positions of disadvantage do not take themselves to be positioned to do so. Hence, from the resources of the conversational theory, it is argued that the interpretive bases used to manifest and recognize good or ill will in others are themselves settled by those in positions of privilege. If so, much of our practices might be morally compromised. Drawing on Cheshire Calhoun’s account of how to hold responsible seemingly innocent moral agents whose conduct bolsters patriarchal injustice, it is argued that our responsibility practices revealed in our acting within the range of morally acceptable practices involve dubious treatment of the less privileged. While the conversational theory might help with the diagnosis, it is granted that it can offer no prescriptions.
Robert Schumann's Leipzig Chamber Works
Authors: Hedges Brown Julie 
Published: October 2024

Abstract
Chapter 1 opens by surveying Schumann’s dynamic view of history, which posits an interdependent relationship between past, present, and future—a global theme of the book. The chapter introduces the Leipzig chamber repertory, its understudied status, and the special place it holds in Schumann’s progression as a composer. It explores the reception of these works, especially the long-held viewpoint that these works are more traditional and “objective” when measured against Schumann’s youthful, experimental output. The chapter explains why such a perception is problematic: it discourages listeners from discerning ties between Schumann’s earlier and later music, and it hinders appreciation for how he reworked older models in creative and successful ways, an argument supported by various examples discussed in subsequent chapters and summarized here. The chapter subsequently surveys additional listener-based perspectives in the book that relate to issues broached above: how artistic works by figures outside of music might provide new understandings of Schumann’s musical innovations, and how the nineteenth-century London reception of the chamber music reveals a new spin on whether Schumann was a traditionalist or progressive composer.
Schumann in Time
Authors: Hedges Brown Julie 
Published: October 2024

Abstract
Chapter 1 opens by surveying Schumann’s dynamic view of history, which posits an interdependent relationship between past, present, and future—a global theme of the book. The chapter introduces the Leipzig chamber repertory, its understudied status, and the special place it holds in Schumann’s progression as a composer. It explores the reception of these works, especially the long-held viewpoint that these works are more traditional and “objective” when measured against Schumann’s youthful, experimental output. The chapter explains why such a perception is problematic: it discourages listeners from discerning ties between Schumann’s earlier and later music, and it hinders appreciation for how he reworked older models in creative and successful ways, an argument supported by various examples discussed in subsequent chapters and summarized here. The chapter subsequently surveys additional listener-based perspectives in the book that relate to issues broached above: how artistic works by figures outside of music might provide new understandings of Schumann’s musical innovations, and how the nineteenth-century London reception of the chamber music reveals a new spin on whether Schumann was a traditionalist or progressive composer.
Introduction
Authors: Jagannathan Dhananjay 
Published: October 2024

AbstractThis introduction identifies the main question of the book—what kind of knowledge is practical wisdom (phronēsis) in Aristotle?—and presents the book’s core claim: that it is practical understanding. It then shows how this view can make sense of the disparate claims Aristotle makes about this superior form of ethical knowledge, while treatments of phronēsis as either an intuitive skill or as a body of scientific knowledge fall short. It goes on to highlight two key views that shape Aristotle’s practical epistemology: the idea that there is genuine knowledge in ethics, and that practical wisdom is the highest grade of knowledge in this domain. Finally, it provides a plan of the book and a summary of each chapter.
Ethical Experience in theNicomachean Ethics
Authors: Jagannathan Dhananjay 
Published: October 2024

AbstractThis chapter offers readings of important texts from the Nicomachean Ethics to defend five claims about Aristotle’s theory of ethical experience as a form of practical knowledge. These claims are the following: (1) ethical experience is a kind of practical knowledge, that is, knowledge of how to act in accordance with virtue; (2) ethical experience is a characteristic product of good habituation; (3) ethical experience constitutes a grasp of the basic facts in ethics—knowledge of ‘the that’ and not ‘the why’ to use Aristotle’s own language; (4) ethical experience equips the would-be inquirer with the starting points needed to appreciate and make good use of ethical claims and arguments; and (5) since the person with ethical experience lacks a grasp of the reason why, they fall short of the ethical understanding that belongs to the person of practical wisdom and which it is the task of ethical inquiry to foster.
Political Wisdom
Authors: Jagannathan Dhananjay 
Published: October 2024

AbstractThis chapter takes up Aristotle’s striking claim that practical wisdom (phronēsis) and political wisdom (politikē) are, in a sense, the same understanding. The key idea that the chapter develops is that the person of political wisdom has the very same grasp of practical universals that belong to the person of practical wisdom but deliberates about these in relation to the political community as a whole. As someone equipped with the totality of the virtues, the person of practical wisdom has an understanding of the common good, which is the collective flourishing of the citizens, as well as the deliberative excellence needed to bring it about. The simultaneously universal and practical character of the understanding that just is phronēsis is therefore clearly displayed in its manifestation as political wisdom. In this way, this final substantive chapter of the book helps confirm the view that has been developed in the preceding chapters.
Data needs for sea otter bioenergetics modeling
Authors: Griffen Blaine D , Klimes Lexanne , Fletcher Laura S , Thometz Nicole M 
Published: October 2024

Abstract
Sea otters are keystone predators whose recovery and expansion from historical exploitation throughout their range can serve to enhance local biodiversity, promote community stability, and buffer against habitat loss in nearshore marine systems. Bioenergetics models have become a useful tool in conservation and management efforts of marine mammals generally, yet no bioenergetics model exists for sea otters. Previous research provides abundant data that can be used to develop bioenergetics models for this species, yet important data gaps remain. Here we review the available data that could inform a bioenergetics model, and point to specific open questions that could be answered to more fully inform such an effort. These data gaps include quantifying energy intake through foraging by females with different aged pups in different quality habitats, the influence of body size on energy intake through foraging, and determining the level of fat storage that is possible in sea otters of different body sizes. The more completely we fill these data gaps, the more confidence we can have in the results and predictions produced by future bioenergetics modeling efforts for this species.
New control variates for pricing basket options
Authors: Jipreze Kam , Date Paresh 
Published: October 2024

Abstract
Accepted by: Giorgio Consigli
Accurate pricing of basket options, which are financial derivatives on multiple underlying assets, is a challenging and practically important task for financial institutions. We propose several new control variates for accurate, fast and efficient pricing of basket options. The first approach to deriving new control variates is the use of Hermite polynomial approximation of appropriate function of the underlying asset prices, which leads to a Black–Scholes-like analytic solution. This approach is new in the option pricing context and opens up new possibilities in derivative pricing. Further control variates are analytically derived using Jensen’s inequality in one case, and distributional properties of multivariate Wiener processes in other cases. All the newly proposed control variates are shown to lead to excellent variance reduction in numerical experiments based on realistic data. The proposed methods are novel, computationally simple and have a strong potential to replace more conventional methods, such as the geometric lower bound in simulation-based pricing of basket options and similar products used in financial risk management.