bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evolutionary dynamics of tax-based strong altruistic reward and punishment in a public goods game
Authors: Yang 杨 Zhi-Hao 智昊 , Yang 杨 Yan-Long 彦龙 
Published: May 2024

Abstract
In public goods games, punishments and rewards have been shown to be effective mechanisms for maintaining individual cooperation. However, punishments and rewards are costly to incentivize cooperation. Therefore, the generation of costly penalties and rewards has been a complex problem in promoting the development of cooperation. In real society, specialized institutions exist to punish evil people or reward good people by collecting taxes. We propose a strong altruistic punishment or reward strategy in the public goods game through this phenomenon. Through theoretical analysis and numerical calculation, we can get that tax-based strong altruistic punishment (reward) has more evolutionary advantages than traditional strong altruistic punishment (reward) in maintaining cooperation and tax-based strong altruistic reward leads to a higher level of cooperation than tax-based strong altruistic punishment.
Using tensile and compressive stress superposition during incremental forming to manipulate martensitic transformation in SS304
Authors: Mamros E M , Maaβ F , Tekkaya A E , Kinsey B L , Ha J 
Published: May 2024

Abstract
Single point incremental forming (SPIF) is a flexible manufacturing process that has applications in industries ranging from biomedical to automotive. In addition to rapid prototyping, which requires easy adaptations in geometry or material for design changes, control of the final part properties is desired. One strategy that can be implemented is stress superposition, which is the application of additional stresses during an existing manufacturing process. Tensile and compressive stresses applied during SPIF showed significant effects on the resulting microstructure in stainless steel 304 truncated square pyramids. Specifically, the amount of martensitic transformation was increased through stress superposed incremental forming. Finite element analyses with advanced material modeling supported that the stress triaxiality had a larger effect than the Lode angle parameter on the phase transformation that occurred during deformation. By controlling the amount of tensile and compressive stresses superposed during incremental forming, the microstructure of the final component can be manipulated based on the intended application and desired final part properties.
Research on Damage Evolution in Ultra-thin Sheet Material under Deep Drawing and Ironing Process
Authors: Gu Nan , Zhang Jiuchang , Zhang Wen , Zhuang Xincun , Zhao Zhen 
Published: May 2024

Abstract
In this paper, the effect of damage induced in deep drawing and ironing processes on the subsequent service performance of deep drawn cups was investigated. To obtain the cups with different amount of deformation damage, three kinds of drawing tests including one-stage deep drawing, two-stage deep drawing, and two-stage deep drawing and ironing were conducted using a 0.3 mm interstitial-free steel sheet. With help of the DF2015 ductile fracture model, the damage evolution of the drawn cups was calculated. Moreover, ring specimens cut from the side walls of the drawn cups were tested in a specially designed tension platform. The load F
max and displacement x corresponding to the maximum load point, and the difference in displacement dx from the maximum load point to the fracture initiation point of ring tensile specimens were used as indicators to evaluate the effect of accumulated damage on the subsequent service performance of the parts.
Experimental investigation on process parameters of laser-assisted robotic roller bending of a thin-walled structure
Authors: Qiu Junpeng , Xu Chenyang , Liu Yi , Han Fei , Min Junying 
Published: May 2024

Abstract
Laser-assisted robotic roller forming (LRRF) combines the process capabilities of robot-based manufacturing and laser-assisted forming. In this work, the LRRF process was applied to bending DP1180 steel sheets to thin-walled structures designed for seat trails. Comprehensive experimental investigations were conducted to explore the influences of laser power, forming passes and scanning speed on the forming forces, springback and bending radii of final parts. Experimental results show that the effects of process parameters on the springback and bending radii are similar to those on the forming forces, while forming passes make an insignificant difference to the springback. The optimized process window was subsequently determined out of the balance between geometrical accuracy and experimental efficiency. By applying the optimized process parameters (laser power of 750 W, 6 forming passes, scanning speed of 5 mm/s), the peak force during LRRF was reduced to ∼2.1kN. Meanwhile, a thin-walled profile with higher precision was achieved. Specifically, the springback angle was reduced to ∼4.1° and a compact profile with a radius-to-thickness ratio of ∼1.0 was obtained.
Multiscale design based on non-penalization smooth-edged material distribution for optimizing topology (SEMDOT)
Authors: Zhou Jiye , Wang Yanan , Chiu Louis N.S. , Ghabraie Kazem 
Published: May 2024

Abstract
This paper presents a concurrent topology optimization method for macro and micro phases based on non-penalization smooth-edged material distribution for optimization topology (SEMDOT) method. Although there is existing research on the multiscale design method, grayscale elements are always emerged especially for penalization method for example the solid isotropic material penalization (SIMP) method, also high computational cost are required when large scale of elements are utilized for obtaining high resolution structures. The methodology proposed here aims to apply a new tech called non-penalization SEMDOT method to find the optimum layout on both scales of elements, it is assumed that the macro structure is composed of periodic materials and both element scales are optimized through their linearly interpolated grid points. The effective macroscopic properties are evaluated by the homogenization method. The approach could provide smooth and clear boundaries for multiscale system without grayscale elements or high computational cost. A series of numerical examples are presented to demonstrate the effectiveness and the efficiency of the proposed method.
Integrating Simulation and Experimentation for Optimized Compaction Powder Forming: A Study on RVE Size, Friction, and Particle Size Distribution
Authors: Ghorbani-Menghari Hossein , Kim Hwi-Jun , Choi Hyunjoo , Cha Pil-Ryung , Kim Ji Hoon 
Published: May 2024

Abstract
This work comprehensively represents multi-particle finite element simulations for powder compaction, including examining representative volume element (RVE) size, friction effects, and particle distribution. The analysis provides valuable insights into the correlation between RVE size and relative density, facilitating a comprehensive understanding of the sensitivity of process parameters to relative density. Furthermore, the research investigates the impact of particle size distribution. Moreover, the study investigates the influence of friction between powder particles and the die wall. Results demonstrate that increased friction leads to a significant reduction in relative density.
Investigation on the limp properties of formed foils for hydrogen applications
Authors: Wituschek S , Römisch D , Lechner M , Merklein M 
Published: May 2024

Abstract
The mass production of bipolar plates for electrolyzers and fuel cells is a central step towards the realization of efficient and cost-effective energy systems of the future. However, current production processes are reaching their limits and can hardly realize the quantities that will soon be demanded, nor can they scale up to the required volumes. Particularly for the handling of half-plates and bipolar plates, major challenges are to be expected, especially with regard to production rates. Existing handling systems have restricted scalability and precision. Therefore, new stacking technologies are necessary, which have to be adaptable to the mechanical properties of the components and maintain tight tolerances during stacking to ensure hydrogen sealing for safety and efficiency. An important property in the handling of the plates is their limpness, which is distinguished by instability of the components as well as plastic deformation at low forces and moments. Therefore, the limp behavior of the components must be analyzed. To investigate the limpness of foil components, a flowfield is first formed using a 1.4404 stainless steel foil with a sheet thickness of 0.075 mm. Subsequently, the workpieces are analyzed in terms of their limp properties by means of a 3-point bending test.
Quenching optimization of a hot stamping line for aluminum automotive components
Authors: Ibarretxe U , Garmendia S , Otegi N , Argarate U , Aranburu A , Ormaetxea A , Carranza M , Galdos L 
Published: May 2024

Abstract
The rising cost of fuel and harder environmental regulations driving the need for more eco-friendly vehicles have compelled automotive manufacturers to search for innovative lightweight solutions. Consequently, hot stamped aluminum alloys are gaining prominence due to their exceptional specific strength and improved formability compared to cold formed components. Unfortunately, the current state of knowledge in the field lacks the necessary depth to establish a reliable, fast and optimized process for aluminum hot forming. To address this gap, a collaborative effort between Mondragon Unibertsitatea (knowledge provider), Fagor Arrasate (hot stamping line supplier), and Batz (tool manufacturer) has been initiated. The collaborative endeavour aims to conduct semi-industrial trials involving the hot stamping of an authentic automobile bumper employing high-strength 6xxx and 7xxx aluminum alloys. The hot stamping trials have been performed under different in-die quenching times and mechanical properties of the stamped bumpers have been empirically tested. These results have helped to define the optimal quenching time. With that aim, first, a thermophysical and rheological characterization of the aluminum has been performed, followed by the development of a model to predict mechanical properties of aluminum alloys. This predictive model, together with the aluminum material data, has been then integrated into the simulation framework to enable accurate forecasting of mechanical properties and, consequently, the identification of the optimal quenching duration. The results revealed that quenching times as brief as 1 second could be employed while maintaining acceptable mechanical properties in a rapid cycle hot stamping process. These expedited quenching times have the potential to boost production by an impressive 70 % when compared to the conventional hot stamping process applied to the equivalent steel bumper.
A theoretical study on deep ultraviolet supercontinuum generation in subwavelength optical fiber
Authors: Shi Weihua , Gu Yuying , Zhang Tiantian 
Published: May 2024

Abstract
In order to obtain supercontinuum (SC) spectra in the deep ultraviolet (UV) region, a generation method of UV SC is proposed based on subwavelength fiber (SWF) composed of background material MgF2. The nonlinear Schrödinger equation is solved by the split-step Fourier method, the optical fiber transmission characteristics are analyzed by the full-vector finite element, and the evolution of the pumping light into SC is numerically simulated in detail. The results of the numerical analysis show that the SC spectra have a spectral width extending from 229.11 nm to 2366.68 nm when 350 fs input pulses of 6 kW peak power, centered about λ0
= 400 nm, are launched into a 4 cm long MgF2 SWF. Such a deep UV SC spectrum has many applications, especially in telecommunication and military fields.
Comparison study of the in-plane crushing failure behavior of traditional and arc-curved hexagonal honeycomb
Authors: Yuan Wei , Meng Zhaokang , Kou Yanqing 
Published: May 2024

Abstract
The honeycomb structures have been widely adopted as the aerospace engineering for the impact dynamic performance. To reveal the in-plane crushing behavior and improve the energy absorption ability, the influence of typical honeycomb structure is studied under different impact velocity and wall thickness. The deformation behavior of arc-curved hexagonal honeycomb with in-plane impact is researched. Results show that three typical deformation model including I, V and X shape are exhibited for traditional and arc-curved types. The deformation model would transfer from X to I shape with the increasing of impact velocity, and the impact load would be more unstable. With the increasing of central angle of arc-curved hexagonal honeycomb, the global deformation occurs instead of local deformation including X and V model, and stronger energy absorption ability is exhibited for the larger angle.
Casting and comprehensive analysis of nitinol-based self-healing metal matrix composite of A356 alloy prepared via clamp technique
Authors: Sharma Sumit , Nandan Gopal 
Published: May 2024

Abstract
The present research explores the development and casting of a self-healing metal matrix composite using A356 alloy reinforced with Nitinol wire through the Clamp technique. The matrix provided a high-strength base, while Nitinol wire acted as a shape memory alloy reinforcement. The clamp technique ensured proper integration and alignment between the matrix and the reinforcement. Semi-solid metal processing enhances the mechanical properties of the base alloy and the wire integration as reinforcement. Mechanical properties of the composite including tensile strength and impact resistance were evaluated. The self-healing capability of the composite was evident through its significant recovery i.e. 61.53% of the deformed surface after thermal loading cycles. Additionally, the self-healing behavior of the composite was examined through cyclic thermal loading. This could provide valuable insight into the design and fabrication of self-healing metal matrix composite.
Association of ambient air pollution and pesticide mixtures on respiratory inflammatory markers in agricultural communities
Authors: Hughes Matthew L , Kuiper Grace , Hoskovec Lauren , WeMott Sherry , Young Bonnie N , Benka-Coker Wande , Quinn Casey , Erlandson Grant , Martinez Nayamin , Mendoza Jesus , Dooley Greg , Magzamen Sheryl 
Published: May 2024

Abstract
Air pollution exposure is associated with adverse respiratory health outcomes. Evidence from occupational and community-based studies also suggests agricultural pesticides have negative health impacts on respiratory health. Although populations are exposed to multiple inhalation hazards simultaneously, multidomain mixtures (e.g. environmental and chemical pollutants of different classes) are rarely studied. We investigated the association of ambient air pollution-pesticide exposure mixtures with urinary leukotriene E4 (LTE4), a respiratory inflammation biomarker, for 75 participants in four Central California communities over two seasons. Exposures included three criteria air pollutants estimated via the Community Multiscale Air Quality model (fine particulate matter, ozone, and nitrogen dioxide) and urinary metabolites of organophosphate (OP) pesticides (total dialkyl phosphates (DAPs), total diethyl phosphates (DE), and total dimethyl phosphates (DM)). We implemented multiple linear regression models to examine associations in single pollutant models adjusted for age, sex, asthma status, occupational status, household member occupational status, temperature, and relative humidity, and evaluated whether associations changed seasonally. We then implemented Bayesian kernel machine regression (BKMR) to analyse these criteria air pollutants, DE, and DM as a mixture. Our multiple linear regression models indicated an interquartile range (IQR) increase in total DAPs was associated with an increase in urinary LTE4 in winter (β: 0.04, 95% CI: [0.01, 0.07]). Similarly, an IQR increase in total DM was associated with an increase in urinary LTE4 in winter (β:0.03, 95% CI: [0.004, 0.06]). Confidence intervals for all criteria air pollutant effect estimates included the null value. BKMR analysis revealed potential non-linear interactions between exposures in our air pollution-pesticide mixture, but all confidence intervals contained the null value. Our analysis demonstrated a positive association between OP pesticide metabolites and urinary LTE4 in a low asthma prevalence population and adds to the limited research on the joint effects of ambient air pollution and pesticides mixtures on respiratory health.
Curious Travellers
Authors: Constantine Mary-Ann 
Published: May 2024

Abstract
Curious Travellers is the first full-length study of British tours of Wales in the Romantic period (c.1760–1820). It examines writers’ responses to Welsh landscapes and communities at a time of drastic economic, environmental, and political change. Beginning with an overview of the genre up to the early 1700s, it shows how the intensely intertextual nature of the genre saturated particular sites with meaning. The study then draws on a range of manuscript and published sources to trace its own circular tour of the country, unpicking moments of cultural entanglement and revealing how travel writing shaped understanding of Wales and Welshness within the wider British polity. The country became a popular destination for visitors following the publication of Thomas Pennant’s Tours in Wales in the late 1770s: hundreds of travel accounts are extant, yet few (particularly those by women) have been studied in depth. Wales proves, in these narratives, as much a place of disturbance as a picturesque haven, a potent mixture of medieval past and industrial present, exposed down its west coast to the threat of invasion during the Napoleonic wars. From castles to copper mines, Curious Travellers explores the potential of tour writing as an idiosyncratic genre at the interface of literature and history, and argues for its importance to broader cultural and environmental studies.
Travel Writing in Wales, 1188–1700
Authors: Constantine Mary-Ann 
Published: May 2024

Abstract
This chapter looks at writing about Wales before the middle of the eighteenth century, beginning with the ‘Itinerary’ of Gerald of Wales, on a mission to raise troops for the Third Crusade in 1188. Building on work by John Cramsie and Daniel Woolf, it discusses works by John Leland, William Camden, Edward Lhuyd, and other early antiquarians to demonstrate the intensely intertextual nature of tour writing from Gerald’s work onwards. Borrowings, citations, and critiques of previous writers are a distinctive feature of the genre, and this has implications for what Woolf has called the ‘social circulation of the past’. Information and ideas seed and re-seed themselves with each new iteration of a journey, forming a body of ‘general knowledge’ in later tourist encounters with key sites. The chapter ends with a discussion of satirical ‘Welsh Tours’ and the accounts of early Methodist itinerants.
‘That Strange Bridge’
Authors: Constantine Mary-Ann 
Published: May 2024

Abstract
This chapter brings in a number of different voices to explore one of the key sites of British Romanticism, the Wye Valley. It revisits William Gilpin’s classic account of the picturesque Observations on the River Wye (1782), developing work by Damian Walford Davies and others, which framed the region as a border space of contested identities. Accounts from the early 1800s are discussed in terms of the ongoing Revolutionary Wars. Largely avoiding the tourist-saturated and much-studied site of Tintern Abbey, the chapter focuses instead on the ‘strange bridge’ which connected England and Wales at Chepstow, seeing in its journey from precarious wooden platform to solid cast-iron structure an emblem of the picturesque’s own power to homogenize and connect the disparate regions and countries of the British Isles.
Capturing the Castle
Authors: Constantine Mary-Ann 
Published: May 2024

Abstract
This chapter takes a standard feature of the home tour, the castle, and examines it from two different perspectives. Several of the most imposing medieval castles in Wales (Harlech, Caernarfon, Conwy) are situated on the west coast, a space which became especially vulnerable during the late 1790s when French troops landed briefly in Fishguard in 1797, and the following year supported the Rebellion in Ireland. In the unsettled context of the 1790s, these sites of invasion and defence take on new meanings for those travelling for pleasure and instruction. Focusing primarily on narratives by Catherine Hutton and Elizabeth Smith, the chapter explores female experiences of travel at a period of international conflict. It notes the frequent intersection of military and tourist routes, particularly on the ‘Irish Road’ to Holyhead where Sarah Ponsonby and Eleanor Butler, ‘The Ladies of Llangollen’, welcomed many travellers whose lives were affected by different aspects of the war.
‘In this state of darkness and illusion’
Authors: Constantine Mary-Ann 
Published: May 2024

Abstract
This final place-based chapter brings the narrative up round the north-west coast of Wales back to Thomas Pennant’s Flintshire home in Holywell. It focuses mainly on the unusual tour of Richard Ayton and William Daniell, whose multivolume Voyage round the Coast of Great Britain was the result of an ambitious series of coastal journeys. The chapter is partly underpinned by materialist theory, drawing on Anna Lowenhaupt Tsing’s description of the ‘assemblage’ as ‘an open-ended entanglement of ways of being’. It begins in Aberystwyth with Ayton and Daniell’s image of the wreck of a ship carrying cotton. It then traces connective threads from mid-Wales to Parys Mountain copper mines on Anglesey, to copper-rolling factories and cotton mills in Greenfield Valley near Holywell, and out across the Atlantic, demonstrating the extent to which Welsh sites of industry, much visited by tourists, were implicated in the trade in enslaved Africans.
From Charity to Subversion
Authors: Finkel Stuart 
Published: May 2024

Abstract
This chapter explores the genealogy of aid to political prisoners and exiles as it emerged in the 1870s, tracing several different threads of activity, thought, and social organization back to the beginning of the century. It first describes how benevolent prison guardianship societies emerged in the early 1800s as an arena for noble philanthropic activity, and how, in the 1830s–1840s, Dr. Fëdor Gaaz vigorously intervened on behalf of prisoners and exiles. It also notes that the Decembrists and Polish rebels after 1830 both established practices of mutual aid and assistance among exiles and became the initial objects of the heroic mythology of Siberian political exile. It documents the emergence of student mutual aid funds in the late 1850s as well as early surreptitious assistance to political detainees in the 1860s. Finally, it examines preliminary political aid efforts abroad, beginning with Aleksandr Herzen’s modest “Common Fund,” which helped Russian political refugees in Europe, and then in 1875 the so-called “Assistance Fund for Political Criminals,” one of the first attempts to create a formal political prisoner aid society. While contentious bickering among émigré factions quickly doomed the Assistance Fund, its charter and initial appeals provided a baseline for future efforts.