bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimizing the printing parameters for dimensional accuracy of distal femur bone by using Taguchi’s method
Authors: Singh Thoudam Kheljeet , Birru Anil Kumar , Singh Khundrakpam Nimo 
Published: January 2024

Abstract
Background
Fused deposition modelling (FDM) is a popular additive manufacturing technique with capability of producing complex and integrate shapes. One of the critical aspects of FDM is the dimensional accuracy of 3D (three-dimension) printed model, especially in medical science applications, as proper fit and function with human body can prevent patient’s discomfort, complication or even harm.

Objective
In this research work, the optimisation of print parameters: layer height, nozzle temperature, printing speed, infill pattern and infill density for improving the dimensional accuracy of distal femur bone, an irregular and complex shaped geometry is carried out using Taguchi’s method and to study its influence using ANOVA (analysis of variance).

Methodology
3D CAD (computer-aided design) model of the distal femur bone is generated from a CT (computerized tomography) scan using 3D slicer and its associated errors are corrected using Ansys SpaceClaim. The model is prepared for printing using Ultimaker Cura as per L16 orthogonal array experimental layout where TEA (trans epicondylar axis), which is the distance between the most prominent point of the lateral and medial epicondyle, is set at 45° from X-axis in XY plane, i.e. diagonally on the plane of printing bed. It is then printed with PLA (polylactic acid) filament. Length along TEA is compared accordingly with 3D CAD model. Taguchi’s method of ‘smaller the better’ is applied for reducing deviation. Further, ANOVA analysis is done on the data set and a linear regression model is also developed.

Result
Through Taguchi’s method, the optimum parameters were found to be triangle for infill pattern, 200 °C for nozzle temperature, 30 mm/s for nozzle speed, 0.1 mm for layer height and 40% for infill density. ANOVA analysis shows that all parameters contribute significantly with layer height being the most influential parameter, followed by infill pattern, nozzle speed, nozzle temperature and infill density. Mathematical model through multiple linear regression method was developed with determination of coefficient value of 96.91% and standard residual value is within the acceptable range of ± 2 indicating that there is no outliner in the data.
FPGA implementation of an improved envelope detection approach for bearing fault diagnosis
Authors: Rebiai Mohamed , Bengharbia Billel , Maazouz Mohamed , Toumi Yassine 
Published: January 2024

AbstractThis study presents an enhanced envelope detection technique implemented on a field-programmable gate array (FPGA) to diagnose bearing faults in rotating machinery. Bearing faults frequently result in machinery breakdowns, incurring substantial downtime and maintenance expenses. In our approach, we employ the Teager energy operator (TEO) to extract the vibration signal envelope. Subsequently, we subject the envelope signal to the fast Fourier transform (FFT) to generate the envelope spectrum of the vibration signal. Finally, we further refine the envelope spectrum using TEO for a second time, resulting in a pronounced fault peak that facilitates early fault detection. We evaluate the effectiveness and performance of the proposed method using two distinct types of bearing vibration signals, one being simulated and the other measured. Our findings reveal that the suggested approach outperforms traditional envelope detection methods, leading to a substantially enhanced fault diagnosis capability. For instance, when we assess the characteristic frequency ratio (FCFR) for faults in the inner and outer rings of the bearing using the proposed method, we observe that the FCFR values are significantly elevated, ranging from 160 to 330% higher compared to the analysis performed by the TEO and HT methods. Consequently, this indicates that the proposed approach has the ability to detect faults at an earlier stage than other methods. Furthermore, the FPGA-based implementation makes it suitable for critical industrial applications where rapid fault detection is essential to prevent catastrophic failures.
Association Between Plasma LRG1 and Lower Cognitive Function in Asians With Type 2 Diabetes Mellitus
Authors: Low Serena , Moh Angela , Pandian Bhuvaneswari , Tan Xin Li , Pek Sharon , Zheng Huili , Ang Keven , Tang Wern Ee , Lim Ziliang , Subramaniam Tavintharan , Sum Chee Fang , Lim Su Chi 
Published: January 2024

Abstract

Context
Leucine-rich α-2-glycoprotein 1 (LRG1) has been implicated in the pathogenesis of diabetic complications, but its association with cognitive function remains unclear.

Objective
Our primary objective is to investigate the longitudinal association between LRG1 and cognitive function in patients with type 2 diabetes mellitus (T2DM). Secondarily, we determine the causal relationship using Mendelian randomization (MR) and the role of arterial stiffness as a potential mediator.

Methods
T2DM patients (n = 1039; age = 64.1 ± 6.4 years) were followed-up for 5.3 ± 1.2 years. Plasma LRG1 was measured at baseline using enzyme-linked immunosorbent assay. Baseline and follow-up cognitive function was assessed using Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). One-sample MR was performed with rs4806985 as plasma LRG1-associated single-nucleotide polymorphism. Mediation analysis was performed to examine if pulse wave velocity (PWV), an arterial stiffness index, mediated the association between plasma LRG1 and follow-up cognitive function.

Results
Elevated baseline natural log (Ln)-transformed LRG1 was inversely associated with baseline and follow-up RBANS total score with adjusted coefficients −1.38 (95% CI −2.55 to −.21; P = .021) and −1.38 (95% CI −2.70 to −.07; P = .039), respectively. Genetically predicted higher levels of plasma LRG1 was associated with lower follow-up RBANS total score with coefficient −7.44 (95% CI −14.14 to −.74; P = .030) per unit increase in LnLRG1. Higher PWV accounted for 27.7% of the association between LnLRG1 and follow-up RBANS total score.

Conclusion
Baseline plasma LRG1 was associated with lower cognitive function at follow-up in patients with T2DM, mediated by PWV. MR analysis provided evidence of an association between genetically influenced plasma LRG1 and lower cognitive function at follow-up.
Defining and Identifying Only Children: A Research Note on the Concept and Measurement Illustrated With UK Survey Data
Authors: Chanfreau Jenny , Goisis Alice 
Published: January 2024

Abstract
Despite increasing interest in the circumstances and outcomes of only children in the demographic literature, the conceptualization of this group has received limited scholarly attention. This research note argues for greater engagement by demographers and social scientists in the conceptualization and identification of only children by addressing three aims. First, we outline potential definitions of only children, present a framework to guide researchers' decisions, and evaluate whether only children can be reliably identified using the British birth cohort studies. Second, we show that the prevalence estimates are contingent on the timing of measurement in childhood, indicating the need for caution when deriving only-child status from cross-sectional household grid data. Third, we demonstrate that both the size and the characteristics of the only-child group may differ across definitions, highlighting that the accurate operationalization of some definitions is particularly restricted by survey designs that prioritize mothers for data collection on children and families. We argue that researchers interested in sole children's outcomes must choose the most appropriate measure for a given research question and, given that many datasets limit how accurately any indicator of only children can capture the chosen definition, reflect on how the operationalization of their measure might affect the results.
Simultaneous dual-region two-photon imaging of biological dynamics spanning over 9  mm in vivo
Authors: Liu Chi , Jin Cheng , Deng Junhao , Liang Junhao , Zhang Licheng , Kong Lingjie 
Published: January 2024

Biodynamical processes, especially in system biology, that occur far apart in space may be highly correlated. To study such biodynamics, simultaneous imaging over a large span at high spatio-temporal resolutions is highly desired. For example, large-scale recording of neural network activities over various brain regions is indispensable in neuroscience. However, limited by the field-of-view (FoV) of conventional microscopes, simultaneous recording of laterally distant regions at high spatio-temporal resolutions is highly challenging. Here, we propose to extend the distance of simultaneous recording regions with a custom micro-mirror unit, taking advantage of the long working distance of the objective and spatio-temporal multiplexing. We demonstrate simultaneous dual-region two-photon imaging, spanning as large as 9 mm, which is 4 times larger than the nominal FoV of the objective. We verify the system performance in in vivo imaging of neural activities and vascular dilations, simultaneously, at two regions in mouse brains as well as in spinal cords, respectively. The adoption of our proposed scheme will promote the study of systematic biology, such as system neuroscience and system immunology.
Archive Wars: The Politics of History in Saudi Arabia, Rosie Bsheer (2020)
Authors: Barakat Nora Elizabeth 
Published: January 2024

Review of: Archive Wars: The Politics of History in Saudi Arabia, Rosie Bsheer (2020)
Stanford, CA: Stanford University Press, 416 pp.,
ISBN: 9781503612587, $30.00; open access (e-book)

All Things Arabia: Arabian Identity and Material Culture, Ed. Ileana Baird and Hülya Yağcioğlu (2021)
Leiden: Brill, 285 pp., 105 colour illus.,
ISBN: 9789004435926, $190.00 (hardback)
“Prostituta, monja, reina de belleza, campesina, hippie, señora, sirvienta y así”: El Colombia color de Patricia Bonilla (1979-1985), un análisis
Authors: Rueda Fajardo Santiago 
Published: January 2024

En poco más de un lustro, en el periodo 1970-1985, Patricia Bonilla realizó una de las más brillantes series fotográficas de fin de siglo en su país, El Colombia Color, una serie de autorretratos donde asumía los roles y condiciones de la mujer en la sociedad colombiana, a la vez que aprovechaba los escenarios y actitudes de sus personajes para realizar un homenaje a la cultura popular de su país. Hoy, cuando la fotografía es omnipresente, y cuando los debates sobre identidad y género, sujeto y representación, se presentan como imprescindibles, El Colombia Color, no visto por más de 30 años y recientemente exhibido, se revela absolutamente actual, permitiendo perspectivas inéditas en el estudio del arte de los años ochenta, de lo realizado por las mujeres artistas en ese periodo.
A Review: Modern Coral Characterization Studies in Malaysia
Authors: Misman Nurul Nadiah , Zakariah Muhammad Noor Amin , Wan Saelan Wan Nurzalia , Shaari Hasrizal , Mohd Noh Khairul Arifin 
Published: January 2024

Coral reefs are highly diverse and productive ecosystem in the ocean that provides various goods services to human and environment. Located within the renowned ‘Coral Triangle’ region, Malaysia is one the thriving countries in Southeast Asia that possess rich marine resources and coral reefs. Like other coral reef around the world, coral reefs in Malaysia are exposed to multiple threat that jeopardize their well-being. Those relying on these ecosystems may face severe consequences if they are lost. In recent decades, research on characterizing modern coral reefs has increased in Malaysia, including identifying key species and their distribution, understanding the factors that control coral growth and assessing the impacts of environmental stressors on reef health. This study is aimed to provide an overview of the current state of knowledge of modern coral characterization studies conducted in Malaysia. It presents the distribution maps of these coral reef studies conducted throughout Malaysia and discusses the techniques employed to characterize them. Most of the studies was conducted in South China Sea, particularly in East Coast of Peninsular Malaysia with Tioman Island, Pahang being identified as having the greatest number of studies. And, visual assessment have the higher frequency of use in characterizing Malaysia coral reef. Going forward, future studies in Malaysia should continue to explore others Malaysia reef, and techniques for characterizing coral reefs, while also conduct more studies in locations with limited research. These studies could have served as foundation resource for future conservation efforts in the face of ongoing threat and challenges.
7Be and 22Na radionuclides for a new therapy for cancer
Authors: Kukulin Vladimir I. , Bibikov Anton V. , Tkalya Eugene V. , Ceccarelli Matteo , Bodrenko Igor V. 
Published: January 2024

Abstract

10B isotopes have been almost exclusively used in the neutron-capture radiation therapy (NCT) of cancer for decades. We have identified two other nuclides suitable for radiotherapy, which have ca. ten times larger cross section of absorption for neutrons and emit heavy charged particles. This would provide several key advantages for potential NCT, such as the possibility to use a lower nuclide concentration in the target tissues or a lower neutron irradiation flux. By detecting the characteristic γ radiation from the spontaneous decay of the radionuclides, one can image their biodistribution. These advantages could open up new possibilities for NCT applications as a safer and more efficient cancer therapy.
Flutter investigation and deep learning prediction of FG composite wing reinforced with carbon nanotube
Authors: Mohammed Aseel J. , Kadhom Hatam K. 
Published: January 2024

Abstract
The flutter of a composite wing reinforced with functionally graded carbon nanotubes (CNTs) has been investigated. A rectangular plate models a supersonic wing with cantilever boundary conditions. To determine displacement fields of a moderately thick plate, shear deformation theory is used. Using the Hamilton principle, a first-order piston theory was used to simulate supersonic airflow. This study examines four types of CNT thickness. Also, four different CNT distribution patterns are investigated. In a two-layer asymmetric composite, the effects of patch mass, mass distribution, fiber orientation angle, and distribution of CNTs were examined. Moreover, the results are compared and verified with other studies. A greater mass ratio led to a smaller flutter boundary, while a longer added mass increased the flutter boundary. A variation in the distribution pattern in CNT fiber orientation results in a distinct behavior of the flutter boundary for asymmetric composites with increasing orientation angles. The artificial neural network is utilized to predict the damping ratio, and the results showed great accuracy compared to the study results. Hyperparameter tuning is employed for better optimizing the predictive models.
PDE5 inhibitors: breaking new grounds in the treatment of COVID-19
Authors: Varghese Ryan , Digholkar Gargi , Karsiya Jainam , Salvi Sahil , Shah Jeenam , Kumar Dileep , Sharma Rohit 
Published: January 2024

Abstract

Introduction
Despite the ever-increasing occurrences of the coronavirus disease (COVID-19) cases around the world, very few medications have been validated in the clinical trials to combat COVID-19. Although several vaccines have been developed in the past quarter, the time elapsed between deployment and administration remains a major impediment.

Content
Repurposing of pre-approved drugs, such as phosphodiesterase 5 (PDE5) inhibitors, could be a game-changer while lessening the burden on the current healthcare system. Repurposing and developing phosphodiesterase 5 (PDE5) inhibitors could extrapolate their utility to combat the SARS-CoV-2 infection, and potentially aid in the management of the symptoms associated with its newer variants such as BF.7, BQ.1, BQ.1.1, XBB.1.5, and XBB.1.16.

Summary
Administration of PDE5 inhibitors via the oral and intravenous route demonstrates other potential off-label benefits, including anti-apoptotic, anti-inflammatory, antioxidant, and immunomodulatory effects, by intercepting several pathways. These effects can not only be of clinical importance in mild-to-moderate, but also moderate-to-severe SARS-CoV-2 infections. This article explores the various mechanisms by which PDE5 inhibitors alleviates the symptoms associated with COVID-19 as well as well as highlights recent studies and findings.

Outlook
These benefits of PDE5 inhibitors make it a potential drug in the physicians’ armamentarium in alleviating symptoms associated with SARS-CoV-2 infection. However, adequate clinical studies must be instituted to eliminate any untoward adverse events.
Numerical approaches for solution of hyperbolic difference equations on circle
Authors: Ashyralyev Allaberen , Hezenci Fatih , Sozen Yasar 
Published: January 2024

Abstract
The present paper considers nonlocal boundary value problems for hyperbolic equations on the circle

T
1

\mathbb{T}^{1}

.
The first-order modified difference scheme for the numerical solution of nonlocal boundary value problems for hyperbolic equations on a circle is presented.
The stability and coercivity estimates in various Hölder norms for solutions of the difference schemes are established.
Moreover, numerical examples are provided.
Assessing English language learners’ collocation knowledge: a systematic review of receptive and productive measurements
Authors: Ding Chen , Reynolds Barry Lee , Szabo Csaba Z. , Boone Griet 
Published: January 2024

Abstract
Since collocation knowledge is integral to second language vocabulary depth, it necessitates a careful examination of various measurement approaches. To this end, the current paper provides an overview and evaluation of extant collocation measurements used in empirical studies on L2 English (N = 153) published between 1980 and 2023 indexed in the SSCI, SCIE, AHCI, SCOPUS, and ERIC databases. Six instruments, seven item formats, and three other assessment tools were identified and reviewed for the assessment of receptive and productive collocation knowledge. The review focused on the collocation knowledge measured by each tool, the instrument and/or item format employed, item design, reported reliability, and potential drawbacks of employing each instrument and item format in research or practice. The review proposes several theoretical and practical considerations for future assessments of and research on English collocation knowledge.
A preconditioned iterative method for coupled fractional partial differential equation in European option pricing
Authors: Wu Shuang , Chou Lot-Kei , Chen Xu , Lei Siu-Long 
Published: January 2024

Abstract
Recently, regime-switching option pricing based on fractional diffusion models has been used, which explains many significant empirical facts about financial markets better. There are many methods to solve the problem, but to the best of our knowledge, effective preconditioners for the second-order schemes have not been proposed. Thus, in this article, an implicit numerical scheme is developed for a regime-switching European option pricing problem under a multi-state tempered fractional model. The scheme is proven to be unconditionally stable and converges quadratically in space and linearly in time. Besides, the resulting linear system is solved using an iterative method, and a preconditioner is proposed to accelerate the rate of convergence. The preconditioner is constructed through circulant approximations to the Toeplitz blocks due to the coefficient matrix, which is is a block matrix with Toeplitz blocks. The spectral analysis of the preconditioned matrix is given, which demonstrates that the spectrum of the preconditioned matrix is clustered around 1. Numerical examples show the efficiency of the proposed method, and an empirical study is also provided.
Politeness Strategies Used by Japanese and Indonesian Speakers on Social Media
Authors: Sarila Hani , Haristiani Nuria , Widianti Susi 
Published: January 2024

This study compares the politeness strategies used by Japanese and Indonesian speakers in communication on social media, based on Brown and Levinson's (1987) politeness theory. To investigate the utilization of politeness strategies in social media interactions, we gathered 200 comments on several contents by public figures on Twitter and Instagram posted in December 2022. The dataset comprises 100 comments from Japanese users derived from posts made by accounts like @yousuck2020, @kishida230, @watanabenaomi703, and @yuriko.koike. The other 100 comments were collected from Indonesian users, originating from accounts such as @fiersabesari, @jokowi, @raffinagita1717, and @ridwankamil. The research findings show a similarity between Japanese and Indonesian speakers, with positive politeness strategy being the most frequently used politeness strategy in social media interactions. This is because there is a common desire to maintain good relationships in communication on social media. On the other hand, differences were observed in the utilization of negative politeness and off-record strategies. The research results reveal that the frequency of negative politeness strategies used by Japanese speakers was slightly higher than that used by Indonesian speakers. In comparison, the frequency of the off-record strategy was lower.
Relational and person-centred approaches to archival practice and education
Authors: Sexton Anna , Shepherd Elizabeth , Duff Wendy 
Published: January 2024

In 2013 Terry Cook identified four paradigms that have shaped archival theory and praxis over the last 150 years: evidence, cultural memory, societal engagement and identity and community. More recently, Jennifer Douglas, Mya Ballin, and Sadaf Ahmadbeigi (2021) have identified a fifth emerging paradigm, Person-Centred Archival Theory and Praxis. Person-centred approaches to archival science shifts the discussion from a focus on records to a focus on “the people that create, keep, use and/or are represented in records.” This paper argues that a person-centred approach to archival theory and praxis must acknowledge the deep emotional impact of working with records, record keeping and the people who create and use archives.