bluuebunny/crossref_metadata_2025 huggingface dataset:
Molecular Hybrid Materials for Selective CO2 Electroreduction to Multicarbon Products
Authors: Luo Zhi‐Mei , Wang Jia‐Wei , Nikolaou Vasilis , Garcia‐Padilla Eduardo , Gil‐Sepulcre Marcos , Benet‐Buchholz Jordi , Rüdiger Olaf , DeBeer Serena , Maseras Feliu , Llobet Antoni
Published: August 2024

Electrochemical devices, using renewable energy sources, for CO2 reduction (CO2R) coupled with water oxidation is an attractive strategy for the carbon‐neutral generation of solar fuels and chemical feedstocks. Highly reduced multi‐carbon (C2+) products (e.g., ethylene, ethanol, and propanol) are among the most attractive CO2R chemicals because of their commercial value and high energy densities. Here a new molecular hybrid material is reported that combines the capacity of molecular CO2R catalyst to generate CO with the capacity of Cu(0) materials to achieve C2+ products and further tune their reactivity with organic modifiers. A Fe‐A2B2 porphyrin containing two quaternary ammonium groups that set the right CO2R onset potential for a synergistic tandem performance with Cu2O nanocubes as the precursors is prepared. Furthermore, Fe‐A2B2 porphyrin is functionalized with two thiolate substituents in order to covalently anchor the molecular catalyst onto Cu providing an intimate interaction and great stability. The structural design enables a substantially enriched CO species adsorbed on Cu facilitated by the iron porphyrin catalyst that in turn facilitates the evolution of C2+ products, as demonstrated by in situ Raman spectroscopy. In addition, the whole electrode is further coated with phenyl modifiers that regulate the proton content and hydrophilicity in the neighborhood of the active centers. This approach affords Faradaic efficiencies in the range of 50% for ethylene and 77% for C2+ products at an applied potential of −1.05 V versus RHE.
Beyond Catalysts: Pioneering a New Era in Aluminum‐Based Electrochemical Energy Systems
Authors: Elumalai Vijayakumar , Sathyaseelan Arunprasath , Nardekar Swapnil Shital , Perumalsamy Muthukumar , Sundhar Arul Saravanan Raaju , Perumal Agilan , Jeong Ji Hyun , Kim Sang‐Jae
Published: August 2024

Aqueous Aluminum‐air batteries (AABs) hold promise for advancing high‐energy density storage systems in future technologies. However, their widespread practical deployment is limited by the inherent hydrogen side reactions in Aluminum (Al) and incomplete cathodic reactions. To address these challenges, the Al‐sodium persulfate (Na2S2O8) system is introduced as an alternative to traditional AABs. Utilizing Na2S2O8 allows to simultaneously achieve three critical objectives, namely, eliminating the need for a cathode catalyst, increasing the system voltage from 1.4 to 2 V, and reducing the hydrogen evolution reaction (HER). Three distinct configurations of the Aluminum electrochemical energy system (Al‐EES) using Na2S2O8: static, flow, and gel are developed. The static configuration demonstrates a performance 1.7 times superior to that of traditional AABs. The flow configuration of Al‐EES achieves a discharge duration of 77 h, which is three to four times longer than that of AABs and exhibits an energy density of 2,650 Wh kgAl−1. This emerging technology has the potential to significantly enhance electric vehicles by providing powerful, efficient, cost‐effective, and durable power‐generation devices.
Pre‐task planning for construction worker safety and health: Implementation and assessment
Authors: Memarian Babak , Brooks Sara B. , Le Jean Christophe
Published: August 2024

Background

Compared to other industry sectors, construction workers experience a disproportionately high rate of occupational injuries and fatalities. As research findings suggest, most of these incidents could be prevented if hazards were proactively recognized and properly addressed. In the construction industry, pre‐task planning (PTP) is a preventive process intended to describe each step of work, identify associated safety and health hazards, and recommend controls to eliminate or mitigate the hazards before work begins. Despite its importance, the construction industry lacks comprehensive guidelines to design and implement PTP in a consistent and effective manner. To fill this gap, this study pursued two objectives: (1) identify shortcomings in current PTP practices and explore recommended solutions from practitioners' perspectives and (2) translate research findings into an applied tool to help practitioners assess and improve the quality of their PTP process.

Methods

To fill the gap, 28 construction safety and health professionals and 104 workers were interviewed, and seven onsite PTP sessions were directly observed.

Results

Shortcomings of current PTP practices as well as recommended solutions were categorized as (1) planning and implementation, (2) all‐trades coordination, (3) engagement and buy‐in, (4) training and logistics, (5) workforce diversity and the language barrier, and (6) PTP content accessibility.

Discussion/Conclusions

An effective PTP process should be based on workers' direct involvement and input on task requirements and hazards. It needs to be regularly updated to reflect the changing work conditions. In addition to task‐related information, to increase workers' awareness, PTP should paint a holistic view of the project and other trades' scopes.
Mechanism and Selectivities of [Cu]/[M] (M=Pd, Ni) Synergistic Catalyzed Alkene Arylboration: A DFT Investigation
Authors: Liu Qing , Sun Yuanyuan , Qin Mei , Li Xiaoyan
Published: August 2024

The transition metal–catalyzed boronation reactions are considered as one of the most effective methods for the synthesis of alkylboranes in terms of functional group compatibility and reactivity. Herein, the mechanism of synergistic catalysis of alkene arylboration by [Cu]/[M] (M=Pd, Ni) bimetallic catalysts, as well as the regioselectivity and stereoselectivity of the reactions, has been investigated by using DFT calculations. The results show that four processes are involved in the whole reaction: [Cu]‐catalyzed borylcuprization of alkene, [Pd] or [Ni]‐catalyzed oxidative addition of halogenated aryl groups, transmetalation, and reductive elimination. [Cu]/[Ni] bimetallic catalysts show the same catalytic activity as [Cu]/[Pd] catalysts and are good economic alternatives for the alkene arylboration. The cleavage of B–B bond of B2Pin2 is the rate‐determining step. The regioselectivity of the title reaction is determined by the mode of the alkene insertion into the Cu–B bond. The attacking of C atom with the more electron‐rich character in alkyne makes for the formation of the main product. The small energy barrier difference between the rotation of the Cu‐C σ bond from the syn‐9 to the anti‐9 controls the stereoselectivity. Our findings provide a thorough explanation of the experimental results and shed light on the further development of the alkene functionalization.
Cultural dimensions and sustainability disclosure in the banking sector: Insights from a qualitative comparative analysis approach
Authors: Nicolò Giuseppe , Zanellato Gianluca , Esposito Benedetta , Tiron‐Tudor Adriana
Published: August 2024

This study adopts an innovative, holistic research approach based on fuzzy set qualitative comparative analysis (fs‐QCA) to deeply delve into national cultural dimensions' role in affecting banks' sustainability disclosure practices in the Eastern European (EE) region. Accordingly, this study aims to identify whether one or more configurations of cultural dimensions derived from Hofstede's national culture framework are conducive to higher levels of sustainability disclosure, using a sample including the five largest banks in each country of the ‘Bucharest Nine’ (B9) area over 2018–2022 period. Results evidence that sustainability disclosure patterns are not homogeneous among the banks operating in B9 countries. After the introduction of Directive 95/2014/EU, banks in some countries maintained relatively constant levels of sustainability disclosure, while others experienced steady growth rates. No cultural dimension alone would likely determine higher sustainability disclosure levels among B9 banks, confirming that normative pressures influencing EE banks' sustainability disclosure practices result from a combination of more cultural facets. In particular, fs‐QCA highlights a bundle of cultural dimension configurations that mould stakeholders' expectations in investigated countries, exerting pressures on banks to enhance their transparency on sustainability issues. The presence of power distance recurs in most configurations as a factor enabling higher sustainability disclosure levels. On the other hand, in most cases, the presence of uncertainty avoidance and long‐term orientation is conducive to higher banks' sustainability and transparency.
Comprehensive review and study for the CMOS transformer tank voltage‐controlled oscillator
Authors: Mansour Marwa , Mansour Islam
Published: August 2024

This article comprehensively reviews and studies CMOS transformer tank voltage‐controlled oscillators (VCOs) designed to improve the frequency tuning range (FTR) and minimize phase noise (PN) across a broad frequency range, particularly for mm‐wave and fifth‐generation applications. The study focuses on enhancing the performance of the oscillators to meet the demanding requirements of these advanced applications. This study thoroughly investigates and compares various strategies to increase the FTR, minimize PN, and reduce power dissipation in transformer tank VCOs. The aim is to establish fundamental guidelines for implementing transformer‐based tank VCOs. The study comprehensively reviews and analyzes the overall architecture of transformer‐based tank VCOs, presenting a detailed examination of the methods employed to enhance VCO performance. Additionally, the study illustrates the impact of the coupling factor on the VCO's performance parameters, detailing and demonstrating the overall tank circuit quality factor (Q) and resonator coupling factor (κ). A thorough understanding of PN methodology and the limitations of FTR has led to the development of innovative architectures. These include transformer‐based capacitive feedback (FB) oscillators with resistively adjusted variable inductors, as well as class‐F and inverse class‐F VCOs. These novel architectures contribute significantly to the improvement of oscillator performance.
A hybrid carrier‐based discontinuous PWM with neutral‐point voltage ripple and current distortion reduction for Vienna rectifier
Authors: Pei Yushuo , Tang Yu
Published: August 2024

The three‐level Vienna rectifier is widely used in industrial applications, such as electric vehicle charging systems and telecommunication power systems. Discontinuous pulse width modulation (DPWM) is widely used in three‐level AC/DC converters due to its features of switching loss minimization. However, the problems of neutral‐point voltage ripple, current zero‐crossing distortion, and switching losses are mutually coupled for the Vienna rectifier. To address these issues, a hybrid carrier‐based discontinuous pulse width modulation (HCB‐DPWM) with reduced neutral‐point (NP) voltage ripple and current distortion is proposed. First, the /6 clamping period of the conventional DPWM is divided into three‐type clamping intervals, which reduce NP voltage ripple with shortened clamping period. Then, the elimination of current distortion around the current zero‐crossing point and the switching loss reduction are investigated. The implementation of the proposed HCB‐DPWM is given in detail. Finally, the simulation and experimental results of the Vienna rectifier are presented to validate the performance that the proposed HCB‐DPWM can eliminate current zero‐crossing distortion and reduce neutral‐point voltage ripple with different modulation indices.
A simple bandwidth‐enhanced magneto‐electric dipole with L‐shaped slots
Authors: Li Rong , Yan Yan , Xu Yanhong , Wang Anyi , Hou Jianqiang
Published: August 2024

A simple wideband magneto‐electric (ME) dipole antenna is presented in this letter. In particular, two pairs of L‐shaped slots with different sizes are successively etched out of the pair of horizontal patches of electric dipole, which can enlarge the bandwidth of ME dipole antenna without increasing the antenna size. Two new resonant frequency points are generated respectively at the lower and upper frequency region. To improve the impedance matching characteristics, two vertical rectangular patches are loaded in the middle of the horizontal portion of the Г‐shaped feed structure. A prototype is fabricated and measured, and an overlapped bandwidth of 101.3% (from 1.36 to 4.15 GHz) in terms of VSWR ≤ 2 is achieved, which can simultaneously cover the n50 (1.432–1.517 GHz), n51 (1.427–1.432 GHz), n78 (3.300–3.800 GHz) and 52.5% of n77 (3.8–4.4 GHz) bands of sub‐6G. It should be highlighted that other excellent properties of ME dipole antenna, such as stable radiation pattern, high gain, and low cross‐polarization level (CRPL), are maintained, which makes the proposed ME dipole antenna a good candidate for sub‐6G applications.
Definitions, terminology and standards for reporting of births and deaths in the perinatal period: International Classification of Diseases (ICD‐11)
Authors: Blencowe Hannah , Hug Lucia , Moller Ann‐Beth , You Danzhen , Moran Allisyn C.
Published: August 2024

Despite efforts to reduce stillbirths and neonatal deaths, inconsistent definitions and reporting practices continue to hamper global progress. Existing data frequently being limited in terms of quality and comparability across countries. This paper addresses this critical issue by outlining the new International Classification of Disease (ICD‐11) recommendations for standardized recording and reporting of perinatal deaths to improve data accuracy and international comparison. Key advancements in ICD‐11 include using gestational age as the primary threshold to for reporting, clearer guidance on measurement and recording of gestational age, and reporting mortality rates by gestational age subgroups to enable country comparisons to include similar populations (e.g., all births from 154 days [22+0 weeks] or from 196 days [28+0 weeks]). Furthermore, the revised ICD‐11 guidance provides further clarification around the exclusion of terminations of pregnancy (induced abortions) from perinatal mortality statistics. Implementing standardized recording and reporting methods laid out in ICD‐11 will be crucial for accurate global data on stillbirths and perinatal deaths. Such high‐quality data would both allow appropriate regional and international comparisons to be made and serve as a resource to improve clinical practice and epidemiological and health surveillance, enabling focusing of limited programmatic and research funds towards ending preventable deaths and improving outcomes for every woman and every baby, everywhere.
Graduate employability: A bibliometric analysis
Authors: Wahab Md. Hasan Shimum , Hosen Mosharrof , Islam Md Asadul , Chowdhury Mohammad Abdul Matin , Jantan Amer Hamzah , Wahab Sazali Abdul
Published: August 2024

In today's highly competitive job market, the employability of graduates holds paramount significance. Employers increasingly demand fundamental competencies and diverse employability skills from the current graduates. Studies have highlighted a noticeable gap between the skills employers seek and graduates’ skills upon the completion of their studies. This gap in employability skills significantly impacts graduates, impeding their prospects of securing suitable employment opportunities. The disparities in skills and knowledge have sparked a debate on graduate employability, necessitating further research in this domain. Addressing that, the current study explored research trends, directions, and opportunities related to graduate employability. A bibliometric analysis was conducted on a dataset comprising 2335 journal articles on graduate employability published between 1981 and 2023 in Scopus and Web of Science databases. The results of bibliometric analysis revealed the most influential journal articles based on their publications, citations, and significance in the intellectual network. Through content analysis, this study shed light on the subject's intellectual structure, characterized by four major thematic clusters: (1) the attribution of broader skills to career enhancement; (2) the significance of generic skills (interpersonal, problem‐solving, and communication skills); (3) the need for work‐related training and employer engagement; and (4) the need for improved curriculum design to build adequate human capital. The study concluded with a discussion of practical policy implications, limitations of study, and recommendations for future research.
Radiomics features outperform standard radiological measurements in detecting femoroacetabular impingement on three‐dimensional magnetic resonance imaging
Authors: Montin Eros , Kijowski Richard , Youm Thomas , Lattanzi Riccardo
Published: August 2024

Femoroacetabular impingement (FAI) is a cause of hip pain and can lead to hip osteoarthritis. Radiological measurements obtained from radiographs or magnetic resonance imaging (MRI) are normally used for FAI diagnosis, but they require time‐consuming manual interaction, which limits accuracy and reproducibility. This study compares standard radiologic measurements against radiomics features automatically extracted from MRI for the identification of FAI patients versus healthy subjects. Three‐dimensional Dixon MRI of the pelvis were retrospectively collected for 10 patients with confirmed FAI and acquired for 10 healthy subjects. The femur and acetabulum were segmented bilaterally and associated radiomics features were extracted from the four MRI contrasts of the Dixon sequence (water‐only, fat‐only, in‐phase, and out‐of‐phase). A radiologist collected 21 radiological measurements typically used in FAI. The Gini importance was used to define 9 subsets with the most predictive radiomics features and one subset for the most diagnostically relevant radiological measurements. For each subset, 100 Random Forest machine learning models were trained with different data splits and fivefold cross‐validation to classify healthy subjects versus FAI patients. The average performance among the 100 models was computed for each subset and compared against the performance of the radiological measurements. One model trained using the radiomics features datasets yielded 100% accuracy in the detection of FAI, whereas all other radiomics features exceeded 80% accuracy. Radiological measurements yielded 74% accuracy, consistent with previous work. The results of this preliminary work highlight for the first time the potential of radiomics for fully automated FAI diagnosis.
BECOMING A  SELF LESS LEADER: LESSONS FROM A LIFE OF SERVANT LEADERSHIP
Authors: Jessup Len
Published: August 2024

The author, who retired as president of Claremont Graduate University in June 2024, writes that he “developed a purpose statement: When I get to the end of my path, I want to be able to look back and know at that moment that I did everything possible to have as much positive impact on as many people as I possibly could have and that I never shied away from an opportunity to do so.” The concept of time is a major consideration: “We sit in these seats of leadership for a brief, fleeting moment, and it’s a privilege not to be taken lightly. So be grateful, make the most of it, leave it better than you found it, let others have the credit, and make sure they are having fun and doing things that are meaningful to them.” And things must be put into perspective: “Leadership is about the pursuit and not the destination. I don’t think of myself less as a leader per se. Rather, I think of myself as a student of leadership, always learning and growing, always trying to get better at the craft, and always trying to learn from others and to do good for others as a result.”
VISION: THE ROLE OF LEADERS IN IMAGINING A BETTER FUTURE
Authors: Korngold Alice
Published: August 2024

The author works with “executives of multinational companies and board members of global, national, and regional nonprofits.” She discusses the importance of vision, and how often it is overlooked by leaders and others. She uses examples of the vision articulated by Dr. Martin Luther King Jr., President John F. Kennedy, and Eleanor Roosevelt. “By imagining and depicting what is possible,” she writes, “these leaders inspired millions of people and even future generations worldwide to pursue new paths of opportunity—for freedom and justice for all in the case of Dr. King, for science and exploration in the case of President Kennedy, and universalizing human rights across the world in the case of Eleanor Roosevelt.” She uses current‐day examples such as Kenya's Kennedy Odede and Shining Hope for Communities (SHOFCO), and Tent Partnership for Refugees, “a global NGO that mobilizes more than 300 companies worldwide to improve the lives and livelihoods of over 36 million refugees forcibly displaced from their home countries.” For corporations, she cites Trane Technologies, which “connects their commitment to the long‐term well‐being of its employees and communities. Furthermore, the company presents itself as a unique opportunity for investors, by describing its long‐term approach to growth for the company and the planet.”
Non‐Biochemical Gradient Sequence‐Controlled Polymers with Tuned Kinetics and Self‐Assembled Morphologies
Authors: Siddharth Kumar , Pérez‐Mercader Juan
Published: August 2024

Two key challenges in the multidisciplinary field of sequence‐controlled polymers are their efficient synthesis and the establishment of correlation with polymer properties. In this context, in this paper, gradient architecture in the hydrophobic tail of an amphiphile is implemented and synthesized for a fixed hydrophilic unit (polyethylene glycol, PEG), by means of two monomers (2‐hydroxypropyl methacrylate, HPMA, and diacetone acrylamide, DAAM) of contrasting reactivities. The resulting non‐biochemical gradient sequence‐controlled polymers are generated from a one‐pot, homogeneous mixture through a PET‐RAFT‐PISA (photoinduced electron/energy transfer‐reversible addition‐fragmentation chain transfer‐polymerization‐induced self‐assembly) method. In addition, the initial concentration ratio of the monomers in the gradient is varied as an input for a set of fixed experimental parameters and conditions, and its correlation with kinetics, gradient and self‐assembled morphologies is established, as the output of the process. These results are extensively corroborated via nuclear magnetic resonance (NMR) spectroscopy analysis, together with transmission electron microscopy (TEM) images, dynamic light scattering (DLS), and gel permeation chromatography (GPC) experiments. These results have implications for chemical computation carried out by PISA, programmable self‐assembly, information storage, biomimetics, origins of life and synthetic protocell studies.
Porous Structure Fibers Based on Multi‐Element Heterogeneous Components for Optimized Electromagnetic Wave Absorption and Self‐Anticorrosion Performance
Authors: Zhu Jiahui , Lan Di , Liu Xuehua , Zhang Shihan , Jia Zirui , Wu Guanglei
Published: August 2024

The excellent performance of electromagnetic wave absorbers primarily depends on the coordination among components and the rational design of the structure. In this study, a series of porous fibers with carbon nanotubes uniformly distributed in the shape of pine leaves are prepared through electrospinning technique, one‐pot hydrothermal synthesis, and high‐temperature catalysis method. The impedance matching of the nanofibers with a porous structure is optimized by incorporating melamine into the spinning solution, as it undergoes gas decomposition during high‐temperature calcination. Moreover, the electronic structure can be modulated by controlling the NH4F content in the hydrothermal synthesis process. Ultimately, the Ni/Co/CrN/CNTs‐CF specimen (P3C NiCrN12) exhibited superior performance, while achieving a minimum reflection loss (RLmin) of −56.18 dB at a thickness of 2.2 mm and a maximum absorption bandwidth (EABmax) of 5.76 GHz at a thickness of 2.1 mm. This study presents an innovative approach to fabricating lightweight, thin materials with exceptional absorption properties and wide bandwidth by optimizing the three key factors influencing electromagnetic wave absorption performance.
High‐Performance Organic Aerogels Tailored for Versatile Recycling Approaches: Recycling‐Reforming‐Upcycling
Authors: Pantazidis Christos , Wang Chang‐lin , Tomović Željko
Published: August 2024

Organic aerogels are emerging as promising materials due to their versatile properties, rendering them excellent candidates for a variety of applications in the fields of thermal insulation, energy storage, pharmaceuticals, chemical adsorption, and catalysis. However, current aerogel designs rely on cross‐linked polymer networks, which lack efficient end‐of‐use solutions, thereby hindering their overall sustainability. In this study, a facile synthesis of organic aerogels with a unique combination of imine and cyanurate moieties is presented, resulting in high‐performance, lightweight insulating materials. The aerogels’ structure, ensures mechanical robustness, thermal resistance, and hydrophobicity without additional treatments, crucial for long‐term performance. Additionally, in response to the currently unsustainable use of cross‐linked polymer materials, the molecular design offers diverse avenues of chemical recycling. These include full depolymerization back into the original monomers, partial network fragmentation producing soluble oligomers that can be promptly employed to fabricate new aerogels, and upcycling of aerogel waste into useful building blocks. This work pioneers a novel approach to material design, emphasizing recyclability as a core feature while maintaining high‐performance excellence.
Study on Thermophysical Properties and Phase Change Regulation Mechanism of Optically‐Controlled Phase Change Materials: Synthesis, Crystal Structure and Molecular Dynamics
Authors: Wang Yi , Sheng Lisha , Xu Bo , Shi Juan , Chen Zhenqian
Published: August 2024

Optically‐controlled phase change materials, which are prepared by introducing molecular photoswitches into traditional phase change materials (PCMs), can convert and store solar energy into photochemical enthalpy and phase change enthalpy. However, the thermophysical properties of optically controlled PCMs, which are crucial in the practical, are rarely paid attention to. 4‐(phenyldiazenyl)phenyl decanoate (Azo‐A‐10) is experimentally prepared as an optically‐controlled PCMs, whose energy storage density is 210.0 kJ·kg−1, and the trans single crystal structure is obtained. The density, phase transition temperature, thermal conductivity, and other parameters in trans state are measured experimentally. Furthermore, a microscopic model of Azo‐A‐10 is established, and the thermophysical properties are analyzed based on molecular dynamics. The results show that the microstructure parameter (order parameters) and thermophysical properties (density, radial distribution function, self‐diffusion coefficient, phase change temperature, and thermal conductivity) of partially or completely isomerized Azo‐A‐10, which are challenging to observe in experiments, can be predicted by molecular dynamics simulation. The optically‐controlled phase change mechanism can be clarified according to the differences in microstructure. The optically‐controlled switchability of thermophysical properties of an optically‐controlled PCM is analyzed. This study provides ideas for the improvement, development, and application of optically‐controlled PCMs in the future.
N‐Doped Carbon Modified (NixFe1‐x)Se Supported on Vertical Graphene toward Efficient and Stable OER Performance
Authors: Ye Beirong , Zhang Yuefei , Li Chen , Zhang Tengfei , Li Yongqi , Li Ting , Huang Fengyu , Tang Chong , Chen Renhong , Tang Tao , Noori Abolhassan , Zhou Liujiang , Xia Xinhui , Mousavi Mir F. , Zhang Yongqi
Published: August 2024

NiFe‐based nanomaterials are extensively studied as one of the promising candidates for the oxygen evolution reaction (OER). However, their practical application is still largely impeded by the unsatisfied activity and poor durability caused by the severe leaching of active species. Herein, a rapid and facile combustion method is developed to synthesize the vertical graphene (VG) supported N‐doped carbon modified (NixFe1‐x)Se composites (NC@(NixFe1‐x)Se/VG). The interconnected heterostructure of obtained materials plays a vital role in boosting the catalytic performance, offering rich active sites and convenient pathways for rapid electron and ion transport. The incorporation of Se into NiFe facilitates the formation of active species via in situ surface reconstruction. According to density functional theory (DFT) calculations, the in situ formation of a Ni0.75Fe0.25Se/Ni0.75Fe0.25OOH layer significantly enhances the catalytic activity of NC@(NixFe1‐x)Se/VG. Furthermore, the surface‐adsorbed selenoxide species contribute to the stabilization of the catalytic active phase and increase the overall stability. The obtained NC@(NixFe1‐x)Se/VG exhibits a low overpotential of 220 mV at 20 mA cm−2 and long‐term stability over 300 h. This work offers a novel perspective on the design and fabrication of OER electrocatalysts with high activity and stability.
Unusual Electrical Conductivity Enhancement in Stable n‐Type Carbon Nanotube Networks
Authors: Chang Sooyon , Biswas Prithwish , Qin Zhao , Tian Zhiting
Published: August 2024

Organic molecule‐doped n‐type single‐walled carbon nanotube (SWCNT) networks are promising candidates for advanced energy applications, such as flexible thermoelectrics and photovoltaics. Yet charge transport in n‐type SWCNTs is limited by two factors: i) charge localization impeding inter‐tube transport caused by disordered mesostructure of randomly oriented SWCNTs and ii) reduction of charge carrier concentration driven by oxidation. Herein, studied the relationship between the mesostructure and thermoelectric properties of n‐type SWCNTs obtained by surfactant‐functionalization and polymer‐dopant grafting. Surprisingly, the electrical conductivity of the polymer‐doped SWCNTs keeps increasing with increasing polymer content, even after the saturation of carrier concentration, resulting in 12x higher conductivity on polymer‐doping compared to surfactant‐functionalization. While hopping transport typically dominates in disordered systems, it is shown that a bridging effect from the polymer causes unusual band‐like conduction in polymer‐doped SWCNTs. Additionally, since surfactants are essential to prevent oxidation and retain n‐type over a long duration, shows that SWCNTs obtained through a dual‐functionalization strategy using both polymer‐dopant and surfactant, demonstrates a long‐term stable high n‐type thermoelectric power factor, when the surfactant amount is carefully controlled. Besides thermoelectrics, the findings are of general interest to developing stable and conductive n‐type SWCNTs for various energy and electronic applications.
Convective slip flow of a hybrid nanofluid near a non‐orthogonal stagnation point over a stretching surface
Authors: Singla Tanvi , Sharma Sapna , Kumar Bhuvaneshvar
Published: August 2024

The present analysis deals with a steady mixed convective flow of hybrid nanofluid (HNF) near the stagnation point of a heated or cooled stretching sheet with velocity slip and convective boundaries. The understanding of nanoparticle grouping kinematics is essential to figure out the thermal impact of HNF flow on the surface. This problem formulation consists of and Cu as nanoparticles with water as a base fluid. The ordinary differential equations are derived from partial differential equations using scaling variables. The governing system of equations has been solved numerically by using the shooting method with Runge–Kutta approach. Parameters such as stagnation, slip, radiation, obliqueness, convection, and the volume fraction of nanoparticles all are key factors influencing the overall velocity as well as the temperature profiles, Nusselt number and skin friction coefficient. The heat transfer rate rises with increasing the stagnation velocity of the free stream, Biot number, and radiation parameter. When the volume of nanoparticles increases from 2% to 5%, the heat transfer boosts up from 2.97% to 10.48%. Hence, the addition of copper nanoparticles has improved the heat transmission characteristics. Also, streamlined patterns for positive and negative obliqueness are in different orientations. The point of zero shear stress moves towards the right and left of the origin for heated and cooled sheet, respectively, depending on the obliqueness and stagnation velocity.
Introduction
Authors: Woodland Sarah , Bell-Wykes Kamarra
Published: August 2024

This book investigates a series of health education plays produced by Australia’s Ilbijerri Theatre Company and led by Butchulla and Yuggera theatre maker Kamarra Bell-Wykes from 2005 to 2019. Over this period, Ilbijerri produced and toured five works that provided education around key health issues facing Aboriginal and Torres Strait Islander peoples and communities: Chopped Liver (2006–2009; 2017), Body Armour (2010–2013) and Viral – Are You the Cure? (2018/2019)—also known as the Hepatitis C Trilogy—all deal with hepatitis C transmission, management, and treatment; North West of Nowhere (2014–2016) addresses sexual health and healthy relationships; and Scar Trees (2019) addresses family violence. Through a comprehensive study, we critically examine these works, while also documenting and acknowledging their important legacy and contribution to theatre for health promotion and education. This chapter describes the research context, methods, and sources of data, as well as our analytical approach informing the study. We introduce how the works operate at the interface between traditional and contemporary First Nations knowledges and performance practices and non-Indigenous approaches to performing arts, education, and wellbeing, also reflecting the cross-cultural relationality and knowledge sharing between we two authors. The chapter concludes with an overview of how the book is organised.
Ilbjierri Theatre Company: Health Education Works (2006–2019)
Authors: Woodland Sarah , Bell-Wykes Kamarra
Published: August 2024

This chapter describes Ilbijerri Theatre Company’s health education theatre productions from 2006 to 2019, led by Kamarra Bell-Wykes (co-author) in her role first as writer and later dramaturg, facilitator, and director. These works sat under Ilbijerri’s Social Impact stream as separate from their mainstage productions and were funded by various state and philanthropic bodies to deliver health education and promotion around specific issues affecting Aboriginal and Torres Strait Islander communities: Chopped Liver (2006–2009; 2017), Body Armour (2010–2013) and Viral – Are You the Cure? (2018/2019)—also known as the Hepatitis C Trilogy—all deal with hepatitis C transmission, management, and treatment; North West of Nowhere (2014–2016) addresses sexual health and healthy relationships; and Scar Trees (2019) addresses family violence. The chapter offers an overview of the health and funding contexts in which they were created, as well as a brief snapshot of the reach and impact of each performance. We also provide a detailed synopsis of each play that includes specific approaches to writing, performance, production, and touring, before moving onto a more in-depth contextual discussion around First Nations Australian approaches to theatre in health education in Chap. 3.
Culturally Led, Culturally Safe Performance Making
Authors: Woodland Sarah , Bell-Wykes Kamarra
Published: August 2024

This chapter presents the first of the findings from our study into the five health education works led by Kamarra Bell-Wykes and produced by Ilbijerri Theatre Company from 2006 to 2019. These findings draw on interviews conducted with eight practitioners who were involved over the years as performers, production staff, and advisors, a research yarn conducted between co-authors Sarah and Kamarra, and Kamarra’s own critical reflections while putting together this volume. We also analysed documents and data from Ilbijerri’s corporate archive and published works such as those by Clare Keating (‘Chopped Liver’ Evaluation Report. Effective Change Pty Ltd. Melbourne: Ilbijerri Theatre Company. Supplied, 2009) and Blayne Welsh (The Hepatitis C Trilogy: A Case for Indigenous Theatre as a Contemporary Manifestation of Traditional Healing Business. Australasian Drama Studies 73: 20–41. https://search.informit.org/doi/abs/10.3316/ielapa.146479491877297, 2018). Here we discuss the first of four prominent themes within the data: the importance of culturally led, culturally safe approaches to making theatre in health education in the First Nations Australian context. This includes the importance of First Nations cultural leadership at every stage from conception through to production, performance, and touring; the need for meaningful community consultation and engagement; and the promotion of cultural safety through protocols and practices that honour the lived experience, cultural obligations, and ‘colonial load’ for creative teams. We argue that centring culture in these foundational ways is essential for the works to achieve their educational goals while also progressing the dramaturgies of wellbeing, strength, and resistance that characterise contemporary First Nations theatre in Australia.
Stigma-Free Spaces for Healing, Empowerment, and Self-Determination
Authors: Woodland Sarah , Bell-Wykes Kamarra
Published: August 2024

This chapter presents further findings from our study on the five health education works led by Kamarra Bell-Wykes and produced by Ilbijerri Theatre Company from 2006 to 2019. These findings draw on interviews conducted with eight practitioners who were involved over the years as performers, production staff, and advisors, a research yarn conducted between co-authors Sarah and Kamarra, and Kamarra’s own critical reflections while putting together this volume. We also analysed documents and data from Ilbijerri’s corporate archive and published works such as those by Clare Keating (‘Chopped Liver’ Evaluation Report. Effective Change Pty Ltd. Melbourne: Ilbijerri Theatre Company. Supplied, 2009) and Blayne Welsh (The Hepatitis C Trilogy: A Case for Indigenous Theatre as a Contemporary Manifestation of Traditional Healing Business. Australasian Drama Studies 73: 20–41. https://search.informit.org/doi/abs/10.3316/ielapa.146479491877297, 2018). This chapter explores the third of three prominent themes within the data: how the works engaged audiences in the health messaging and information and created culturally safe spaces for challenging stigma and promoting community empowerment and self-determination. As such, we continue to argue that the works progress the dramaturgies of wellbeing, strength, and resistance that characterise contemporary First Nations theatre in Australia.
Conclusion
Authors: Woodland Sarah , Bell-Wykes Kamarra
Published: August 2024

This chapter concludes our study of health education works produced by Australia’s Ilbijerri Theatre Company and led by Yuggera and Butchulla theatre maker Kamarra Bell-Wykes from 2006 to 2019. We draw together the findings to conclude that the works Chopped Liver, Body Armour, Viral – Are You the Cure?, North West of Nowhere, and Scar Trees represent a significant and innovative contribution to both First Nations contemporary theatre and applied theatre for health education and equity. Looking back on this important body of work has also informed the development of future projects for Kamarra, including the most recent work, The Score, which addresses sexual health for young Aboriginal and Torres Strait Islander peoples through a community-engaged, participatory model. We conclude by acknowledging the creative teams who contributed to these works over 13 years, recognising that the success of these works was built on their talent, dedication, and commitment.
Scale invariance beyond criticality within the mean-field analysis of tensorial field theories
Authors: Dekhil Roukaya , Jercher Alexander F. , Oriti Daniele , Pithis Andreas G. A.
Published: August 2024

Abstract

We continue the series of articles on the application of Landau-Ginzburg mean-field theory to unveil the basic phase structure of tensorial field theories which are characterized by combinatorially non-local interactions. Among others, this class covers tensor field theories (TFT) which lead to a new class of conformal field theories highly relevant for investigations on the AdS/CFT conjecture. Moreover, it also encompasses models within the tensorial group field theory (TGFT) approach to quantum gravity. Crucially, in the infrared we find that the effective mass of the modes relevant for the critical behavior vanishes not only at criticality but also throughout the entire phase of non-vanishing vacuum expectation value due to the non-locality of the interactions. As a consequence, one encounters there the emergence of scale invariance on configuration space which is potentially enhanced to conformal invariance thereon.
Krylov complexity of deformed conformal field theories
Authors: Chattopadhyay Arghya , Malvimat Vinay , Mitra Arpita
Published: August 2024

Abstract

We consider a perturbative expansion of the Lanczos coefficients and the Krylov complexity for two-dimensional conformal field theories under integrable deformations. Specifically, we explore the consequences of $$ \textrm{T}\overline{\textrm{T}} $$
T

T
¯

, $$ \textrm{J}\overline{\textrm{T}} $$
J

T
¯

, and $$ \textrm{J}\overline{\textrm{J}} $$
J

J
¯

deformations, focusing on first-order corrections in the deformation parameter. Under $$ \textrm{T}\overline{\textrm{T}} $$
T

T
¯

deformation, we demonstrate that the Lanczos coefficients bn exhibit unexpected behavior, deviating from linear growth within the valid perturbative regime. Notably, the Krylov exponent characterizing the rate of exponential growth of complexity surpasses that of the undeformed theory for positive value of deformation parameter, suggesting a potential violation of the conjectured operator growth bound within the realm of perturbative analysis. One may attribute this to the existence of logarithmic branch points along with higher order poles in the autocorrelation function compared to the undeformed case. In contrast to this, both $$ \textrm{J}\overline{\textrm{J}} $$
J

J
¯

and $$ \textrm{J}\overline{\textrm{T}} $$
J

T
¯

deformations induce no first order correction to either the linear growth of Lanczos coefficients at large-n or the Krylov exponent and hence the results for these two deformations align with those of the undeformed theory.
Massive twistor worldline in electromagnetic fields
Authors: Kim Joon-Hwi , Kim Jung-Wook , Lee Sangmin
Published: August 2024

Abstract

We study the (ambi-)twistor model for spinning particles interacting via electromagnetic field, as a toy model for studying classical dynamics of gravitating bodies including effects of both spins to all orders. We compute the momentum kick and spin kick up to one-loop order and show precisely how they are encoded in the classical eikonal. The all-orders-in-spin effects are encoded as a dynamical implementation of the Newman-Janis shift, and we find that the expansion in both spins can be resummed to simple expressions in special kinematic configurations, at least up to one-loop order. We confirm that the classical eikonal can be understood as the generator of canonical transformations that map the in-states of a scattering process to the out-states. We also remark that cut contributions for converting worldline propagators from time-symmetric to retarded amount to the iterated action of the leading eikonal at one-loop order.
Factors Influencing the Perceived Economic Benefits of Innovative Agri-Environmental Contracts
Authors: Bradfield Tracy , Harmanny Kina S. , Hennessy Thia , Schulp Catharina J. E.
Published: August 2024

Continued innovation in contract design may enhance the delivery of agri-environmental climate public goods (AECPG), but barriers to adoption arise in terms of how farmers perceive the economic benefits. Therefore, this paper examines survey data from Ireland and the Netherlands to analyse whether land managers agree that results-based, collective action, value chain and land tenure contracts for the delivery of AECPG are understandable, applicable to their farm and economically beneficial. Using Probit models, we also identify groups of land managers who perceive the different contract types as being economically beneficial, and these findings can inform policymakers of farmer groups who need adequate consideration during the design of agri-environmental contracts. For example, greater incentives could encourage older farmers to enrol in results-based contracts in Ireland and value chain contracts in the Netherlands. We also find a link between contract duration and the perceived economic benefits of collective action contracts in both countries, with land managers in Ireland desiring a longer duration. We highlight that policymakers and land managers in Ireland could apply lessons from the design of agri-environmental contracts in the Netherlands, where they are more common and varied. Greater knowledge exchange between users and non-users of such contracts would also help bridge the gap between theory and practice in both countries.
Metaheuristic-based ensemble learning: an extensive review of methods and applications
Authors: Rezk Sahar Saeed , Selim Kamal Samy
Published: August 2024

Ensemble learning has become a cornerstone in various classification and regression tasks, leveraging its robust learning capacity across disciplines. However, the computational time and memory constraints associated with almost all-learners-based ensembles necessitate efficient approaches. Ensemble pruning, a crucial step, involves selecting a subset of base learners to address these limitations. This study underscores the significance of optimization-based methods in ensemble pruning, with a specific focus on metaheuristics as high-level problem-solving techniques. It reviews the intersection of ensemble learning and metaheuristics, specifically in the context of selective ensembles, marking a unique contribution in this direction of research. Through categorizing metaheuristic-based selective ensembles, identifying their frequently used algorithms and software programs, and highlighting their uses across diverse application domains, this research serves as a comprehensive resource for researchers and offers insights into recent developments and applications. Also, by addressing pivotal research gaps, the study identifies exploring selective ensemble techniques for cluster analysis, investigating cutting-edge metaheuristics and hybrid multi-class models, and optimizing ensemble size as well as hyper-parameters within metaheuristic iterations as prospective research directions. These directions offer a robust roadmap for advancing the understanding and application of metaheuristic-based selective ensembles.