Miracle-dz/UniFAR-FTUs huggingface dataset:
Determinants of Profitability : Evidence from Construction Companies Listed on Indonesian Securities Market

An asset management role is required to analyze and optimize revenue sources and efficient systems to reduce costs. Construction service companies that tend to have fewer fixed assets than their current assets have constraints in suppressing production prices and must be able to manage them efficiently to maintain their existence in the market. The data shows the growth in the number of construction service companies which continues to increase and the construction price index which continues to decline, requiring efficient asset management to reduce production costs. For this reason, this study aims to determine the effect of Account Receivable Turnover (ARTO) asset management instruments, Fixed Asset Turnover (FATO), Inventory Turnover (IT), and Total Asset Turnover (TATO) on Operating Profit Margin (OPM) in construction service companies in Indonesia. The research sample is 5 large-scale construction companies in Indonesia with vulnerable observation periods from 2017 to 2021. The method used in this research is panel data regression to examine the relationship between research variables. The results of this study indicate that Fixed Asset Turnover (FATO) and Total Assets Turnover (TATO) have an effect on the Operational Profit Margin (OPM) of construction service companies in Indonesia. Meanwhile, Account Receivable Turnover (ARTO) and Inventory Turnover (IT) have no effect on OPM in Indonesian construction service companies. The results of this study have implications for construction service companies that asset management is very important for the company's progress, especially in increasing profits. This research contributes to the ability of construction service companies to manage their assets effectively, because the construction service business actor is the party responsible for implementing infrastructure development in Indonesia.
PENGARUH KUALITAS PELAYANAN DAN KEPERCAYAAN TERHADAP LOYALITAS PELANGGAN DENGAN KEPUASAN PELANGGAN SEBAGAI VARIABEL INTERVENING PADA PELANGGAN PANGKAS RAMBUT DENSIKO BUKITTINGGI

ABSTRAK Tujuan dari penelitian untuk mengetahui bagaimana pengaruh kepercayaan dan kualitas pelayanan terhadap loyalitas pelanggan dengan kepuasan pelanggan sebagai variabel intervening pada pelanggan Pangkas Rambut Densiko Bukittinggi. Pengujian hipotesis ini menggunakan model persamaan struktural (SEM) sebagai metode analisisnya. Penelitian ini memanfaatkan informasi penting. Sampel penelitian ini terdiri dari 75 responden kuesioner yang dipilih secara acak dari pelanggan barber Densiko Bukittinggi. Temuan penelitian ini menunjukkan bahwa loyalitas pelanggan secara signifikan dipengaruhi oleh kualitas layanan, kepercayaan, dan kepuasan pelanggan secara parsial dan simultan. Loyalitas pelanggan dipengaruhi secara positif dan signifikan oleh aspek kualitas layanan dan kepercayaan. Analisis variabel intervening menunjukkan bahwa intervensi untuk kepuasan pelanggan dapat memperkuat pengaruh kualitas layanan dan kepercayaan terhadap loyalitas pelanggan. Fokus penelitiannya adalah Densiko Bukittinggi Haircut yang lebih mengutamakan kepercayaan pelanggan dan kualitas pelayanan. Dengan tujuan agar sifat administrasi akan jauh lebih unggul nantinya.Kata Kunci : Kualitas Pelayanan , Kepercayaan, Kepuasan Pelanggan , Loyalitas Konsumen ABSTRACTThe purpose of this study was to find out how the influence of trust and service quality on customer loyalty with customer satisfaction as an intervening variable for Densiko Bukittinggi Barbershop customers. This hypothesis test makes use of structural equation modeling (SEM) as the method of analysis. This study utilized essential information. This study's sample consisted of 75 questionnaire respondents chosen at random from Densiko Bukittinggi barber customers. This study's findings show that customer loyalty is significantly influenced by service quality, trust, and customer satisfaction in part and simultaneously. Customer loyalty is influenced both positively and significantly by aspects of service quality and trust. The analysis of the intervening variables demonstrates that interventions for customer satisfaction can strengthen the influence of service quality and trust on customer loyalty. The focus of the research is Densiko Bukittinggi Haircut, which places a greater emphasis on customer trust and service quality. With the goal that the nature of administration will be far and away superior later on.Keywords: Service Quality, Trust, Customer Satisfaction, Consumer Loyalty
Bilateral Arteriovenous Shunting Through Pial and Perforating Vessels With Multiple Strokes in a Patient With Hepatopulmonary Syndrome

Hepatopulmonary syndrome (HPS) is a condition characterized by chronic liver disease, intrapulmonary arteriovenous shunting, and increased alveolar-arterial oxygen gradient. This case report presents a 54-year-old male patient with a history of stroke, liver cirrhosis, portal vein thrombosis, hypertension, diabetes, and bladder cancer, who presented with worsening headaches and confusion over the course of five years. Digital subtraction angiogram (DSA) revealed multiple bilateral arteriovenous shunts, suggesting a shunting mechanism similar to that observed in HPS. We propose that this unique case could provide valuable insights into the parallels between the pathophysiology of HPS and diffuse arteriovenous shunting in the brain and the increased risk of ischemic and hemorrhagic events in both cases. Further studies are needed to establish a clearer understanding of this relationship and its implications for patients with chronic liver disease.
Synthesis of Ilmenite Nickel Titanite-Supported Carbon Nanofibers Derived from Polyvinylpyrrolidone as Photocatalyst for H2 Production from Ammonia Borane Photohydrolysis

The present study involves the synthesis of photocatalytic composite nanofibers (NFs) comprising ilmenite nickel titanite-supported carbon nanofibers (NiTiO3/TiO2@CNFs) using an electrospinning process. The photocatalytic composite NFs obtained were utilized in hydrogen (H2) production from the photohydrolysis of ammonia borane (AB). The experimental findings show that the photocatalytic composite NFs with a loading of 25 mg had a good catalytic performance for H2 generation, producing the stoichiometric H2 in 11 min using 1 mmol AB under visible light at 25 °C and 1000 rpm. The increase in catalyst load to 50, 75, and 100 mg leads to a corresponding reduction in the reaction time to 7, 5, and 4 min. The findings from the kinetics investigations suggest that the rate of the photohydrolysis reaction is directly proportional to the amount of catalyst in the reaction system, adhering to a first-order reaction rate. Furthermore, it was observed that the reaction rate remains unaffected by the concentration of AB, thereby suggesting a reaction of zero order. Increasing the reaction temperature results in a decrease in the duration of the photohydrolysis reaction. Furthermore, an estimated activation energy value of 35.19 kJ mol−1 was obtained. The composite nanofibers demonstrated remarkable and consistent effectiveness throughout five consecutive cycles. The results suggest that composite NFs possess the capacity to function as a feasible substitute for costly catalysts in the process of H2 generation from AB.
Design and Optimization of Solid Lipid Nanoparticles Loaded with Triamcinolone Acetonide

Principles of quality by design and design of experiments are acquiring more importance in the discovery and application of new drug carriers, such as solid lipid nanoparticles. In this work, an optimized synthesis of solid lipid nanoparticles loaded with Triamcinolone Acetonide is presented using an approach that involves Stearic Acid as a lipid, soy PC as an ionic surfactant, and Tween 80 as a nonionic surfactant. The constructed circumscribed Central Composite Design considers the lipid and nonionic surfactant quantities and the sonication amplitude in order to optimize particle size and Zeta potential, both measured by means of Dynamic Light Scattering, while the separation of unentrapped drug from the optimized Triamcinolone Acetonide-loaded solid lipid nanoparticles formulation is performed by Size Exclusion Chromatography and, subsequently, the encapsulation efficiency is determined by HPLC-DAD. The proposed optimized formulation—with the goal of maximizing Zeta potential and minimizing particle size—has shown good accordance with predicted values of Zeta potential and dimensions, as well as a high value of encapsulated Triamcinolone Acetonide. Experimental values obtained from the optimized synthesis reports a dimension of 683 ± 5 nm, which differs by 3% from the predicted value, and a Zeta potential of −38.0 ± 7.6 mV (12% difference from the predicted value).
Scattered data fitting by minimal surface

Abstract The goal of this paper is to develop a computational model for obtaining the fitting surface to the given scattered data with minimal area. The basic idea of the model is to utilize the B-spline and area minimization. The model is turned into a Tikhonov regularization model finally. By choosing the regularization parameters with the L-curve criterion and the GCV method, respectively, numerical experiments indicate that the model can provide an acceptable compromise between the minimization of the data mismatch term and the area of the surface.
Revisiting the vascular theory of glaucoma using optical coherence tomography angiography

Glaucoma is an eye disease that can cause permanent loss of vision. In addition to increased pressure within the eye, decreased blood supply to the nerve of the eye is also believed to be an important cause of glaucoma. The current thesis shows that a new non-invasive technology: OCT (optical coherence tomography) angiography, measures the blood supply to the nerve of the eye efficiently. It also confirms that the blood supply is reduced in glaucoma. An effective way of preventing glaucoma blindness is to detect the disease early. The current thesis shows that OCT angiography is no better than the currently used methods in the early detection of glaucoma.
A Study on Rayleigh Wave Propagation in Elastic continua

The thesis aims to study the propagation of Rayleigh waves in a homogeneous isotropic elastic half-space under free conditions and underlying a liquid half-space of inviscid liquid. Secular equations are obtained for the propagation of Rayleigh waves. Variation of phase velocity with the wave number has been depicted by graphs. There are mainly two types of waves generated in a solid,Body waves and Surface waves. Body waves include P-waves and S-waves and Surface waves include Love waves and Rayleigh waves. Surface waves are generated by the constructive interference of P and S waves. These waves usually propagate in the half-space. They have wide range applications in seismology and non-destructive evaluation. Chapter-1 deals with the brief historical introduction of the theory of elasticity. Continuum mechanics is the branch of the mechanics that deals with the kinematic behavior of continuous matter. Summary of Hooke’s law has been discussed. Types of elastic waves with their subtypes have been discussed in this chapter. The basic governing equations of elasticity have been presented and expressions for speeds of primary and secondary waves have been derived using Helmholtz decomposition . Chapter-2 deals with the Rayleigh waves in the homogeneous isotropic elastic halfspace. In this chapter, formulation of the problem is done and secular equation is obtained from the basic governing equation of elasticity in the absence of body forces. The value of Rayleigh phase velocity is obtained. Chapter-3 deals with the study of propagation of rayleigh waves in an elastic halfspace underlying a half-space liquid. In this chapter, effect of fluid loading on phase velocity of Rayleigh waves has been studied.The secular equation is derived analytically. Effect of liquid loading is shown graphically. In the present work I have reviewed the following work in the field of wave propagation in elastic solid. 1. (Chapter-5 Waves in infinite media) of the textbook
Efficient optimization algorithms for optimal control of turbulent flows

In the current study, we focus on the efficiency of gradient-based optimization algorithms for optimal control of turbulent flows, and investigate the number of forward and adjoint simulations that are required per unit of cost-function improvement. Different algorithms are considered, i.e., two versions of a nonlinear conjugate gradient algorithm (CG), a limited memory quasi-Newton method (L-BFGS), a damped L-BFGS method and a truncated Newton method. The comparative tests between L-BFGS and the truncated Newton methods are examined on an extended Rosenbrock function. Next to that, the L-BFGS, the damped L-BFGS and the CG methods are applied to an unconstrained distributed control problem that consists of the optimization of a distributed force in the direct numerical simulation of an incompressible turbulent channel flow.
The Potential of Bile Acids as Biomarkers for Metabolic Disorders

Bile acids (BAs) are well known to facilitate the absorption of dietary fat and fat-soluble molecules. These unique steroids also function by binding to the ubiquitous cell membranes and nuclear receptors. As chemical signals in gut–liver axis, the presence of metabolic disorders such as nonalcoholic fatty liver disease (NAFLD), type 2 diabetes mellitus (T2DM), and even tumors have been reported to be closely related to abnormal levels of BAs in the blood and fecal metabolites of patients. Thus, the gut microbiota interacting with BAs and altering BA metabolism are critical in the pathogenesis of numerous chronic diseases. This review intends to summarize the mechanistic links between metabolic disorders and BAs in gut–liver axis, and such stage-specific BA perturbation patterns may provide clues for developing new auxiliary diagnostic means.
Protist taxonomic and functional diversity in aquatic ecosystems of the Brazilian Atlantic Forest

The Brazilian Atlantic Forest and its associated ecosystems are highly biodiverse but still understudied, especially with respect to eukaryotic microbes. Protists represent the largest proportion of eukaryotic diversity and play important roles in nutrient cycling and maintenance of the ecosystems in which they occur. However, much of protist diversity remains unknown, particularly in the Neotropics. Understanding the taxonomic and functional diversity of these organisms is urgently needed, not only to fill this gap in our knowledge, but also to enable the development of public policies for biological conservation. This is the first study to investigate the taxonomic and trophic diversity of the major protist groups in freshwater systems and brackish coastal lagoons located in fragments of the Brazilian Atlantic Forest by DNA metabarcoding, using high-throughput sequencing of the gene coding for the V4 region of the 18S rRNA gene. We compared α and β diversity for all protist communities and assessed the relative abundance of phototrophic, consumer, and parasitic taxa. We found that the protist communities of coastal lagoons are as diverse as the freshwater systems studied in terms of α diversity, although differed significantly in terms of taxonomic composition. Our results still showed a notable functional homogeneity between the trophic groups in freshwater environments. Beta diversity was higher among freshwater samples, suggesting a greater level of heterogeneity within this group of samples concerning the composition and abundance of OTUs.Ciliophora was the most represented group in freshwater, while Diatomea dominated diversity in coastal lagoons.
A Study on Professional Identity of Teachers of Chinese International Education

With the continuous development of the globalization of the Chinese language craze, the profession of teaching Chinese as a foreign language is more and more well-known. As Chinese teachers who teach in a multicultural environment, their professional identity has gradually become a topic of concern. This paper takes full-time teachers of Chinese international education as the research object. With the help of existing survey data in the academic field, this paper makes an in-depth discussion and interpretation of their development status. It found that the professional identity of teachers of Chinese international education is in a relatively negative state in all dimensions. Based on the current situation, the paper gives a reasonable analysis of the reasons, and believes that social evaluation, salary level, working environment, career development path and other aspects have a negative impact on the professional identity of teachers of Chinese international education. Based on the reasons, the paper also gives suggestions on feasible measures from the government, society and other aspects, so as to provide a reasonable path for the future career construction of teachers of Chinese international education.
A Benchmark of Absolute and Relative Positioning Solutions in GNSS Denied Environments

Precise positioning is fundamental to the Internet of Things (IoT) that delivers insights into everything from large-scale business to ordinary smart life. Accurate localization and positioning in global navigation satellite system (GNSS) denied environments, such as indoor-, underground-spaces, and forests, is one of the most prosperous research fields because of the great complexity prompted by various challenging application scenarios. Different sensors, algorithms, and combinations of those have been developed in past decades, which provided a great variety of possible solutions that deliver different positioning accuracies. However, a rigorous evaluation of the positioning accuracy of different mainstream solutions is missing, mainly because of the difficulties in acquiring reliable ground truth for referencing and the lack of comparable test/application conditions. A comprehensive benchmarking was carried out in this study based on the comparisons of six solutions that consist of different combinations of five positioning technologies, i.e., 1) ultrawideband (UWB) and inertial measurement unit (IMU); 2) UWB, IMU, and camera; 3) UWB and light detection and ranging (LIDAR); 4) UWB and radio detection and ranging (RADAR); 5) IMU, camera, and LIDAR; and 6) UWB, IMU, camera and LIDAR. The five technologies, i.e., UWB, IMU, camera, RADAR, and LIDAR, were commonly regarded as those that are with high applicability, accuracy, and robustness. New anchors self-positioning algorithm and integrity monitoring algorithm were proposed to further aid the compared solutions and the benchmark. High-precision survey (millimeter)-level ground truth references were acquired at indoor and outdoor test locations and applied in the evaluations, to assist reliable quantitive benchmarks about the positioning accuracies and stabilities of the compared solutions. The strengths, limitations, and potentials of each solution were analyzed. It was revealed that all relative positioning solutions accumulate positioning errors over time. Such accumulation was of the highest significance for RADAR, followed by camera. LIDAR is presented to be the most robust solution for relative positioning. Compared to camera, LIDAR, and RADAR alone, the integration of different technologies clearly improved the performance. The tight coupling (TC) performed slightly superior to loose coupling, and the unscented Kalman filter with TC had a higher positioning accuracy in most cases.
Black phosphorus: broadband nonlinear optical absorption and application

Black phosphorus (BP), 2D layered material with layered dependent direct bandgap (0.3 eV (bulk), 2.0 eV (single layer)) that has gained renewed attention, has been demonstrated as an extremely appropriate optical material for broadband optical applications from infrared to mid-infrared wavebands. Herein, by coupling multi-layer BP films with microfiber, we fabricated a nonlinear optical device with long light–matter interaction distance and enhanced damage threshold. Through taking full advantage of its fine nonlinear optical absorption property, we obtained stable mode-locking (51 ps) and Q-switched mode-locking states in Yb-doped or Er-doped (403.7 fs) all-fiber lasers and the single-longitudinal-mode operation (53 kHz) in an Er-doped fiber laser with enhanced power tolerance, using the same nonlinear optical device. Our results showed that BP could be a favorable nonlinear optical material for developing BP-enabled wave-guiding photonic devices, and revealed new insight into BP for high optical power unexplored optical devices.
Morphological evolution of Ge/Si nano-strips driven by Rayleigh-like instability

We present the morphological evolution obtained during the annealing of Ge strips grown on Si ridges as a prototypical process for 3D device architectures and nanophotonic applications. In particular, the morphological transition occurring from Ge/Si nanostrips to nanoislands is illustrated. The combined effect of performing annealing at different temperatures and varying the lateral size of the Si ridge underlying the Ge strips is addressed by means of a synergistic experimental and theoretical analysis. Indeed, three-dimensional phase-field simulations of surface diffusion, including the contributions of both surface and elastic energy, are exploited to understand the outcomes of annealing experiments. The breakup of Ge/Si strips, due to the activation of surface diffusion at high temperature, is found to be mainly driven by surface-energy reduction, thus pointing to a Rayleigh-like instability. The residual strain is found to play a minor role, only inducing local effects at the borders of the islands .
Does Gender and Cultural Diversity Matter for Sustainability in Healthcare? Evidence from Global Organizations

Global healthcare organizations are fundamental in addressing the healthcare needs of local and global communities. This highly regulated sector means it is under constant scrutiny for health, safety, and ethical compliance risks by federal regulatory bodies. Despite higher monitoring, an increasing number of healthcare companies receive fines for their irresponsible practices, manifesting significant questions about their corporate governance and sustainability practices. Against this backdrop, this study examines the relationship between boardroom diversity on the sustainability performance of companies operating in healthcare. Utilizing a global sample of publicly listed healthcare companies, using panel regression data and the system-GMM estimator accounting for endogeneity, we find evidence of a positive association between board diversity (gender and culture) and sustainability performance. These findings support critical mass theoretical expectations for board diversity and sustainability performance, suggesting that a meaningful representation (three or more) of women and ethnic directors on the board of healthcare organizations significantly improves sustainability performance. The findings remain robust in a series of robustness tests and continue to hold after accounting for potential endogeneity concerns. This paper has important implications for global healthcare organizational policy concerning diversity management practices and their implications for sustainability performance.