bluuebunny/crossref_metadata_2025_split huggingface dataset:
Micromechanical Modeling for Analysis of Shear Wave Propagation in Granular Material
Authors: Derbane Said , Mansouri Mouloud , Messast Salah 
Published: August 2024

Abstract
This paper presents a numerical study of shear wave propagation in a vertical sand profile through micromechanical modeling. For this purpose, 2D modeling by the Discrete Element Method (DEM), is carried out. The DEM model is based on molecular dynamics with the use of circular elements. The intergranular normal forces at contacts are calculated through a linear viscoelastic law, while the tangential forces are calculated through a perfectly plastic viscoelastic model. Rolling friction is incorporated to account for the damping of the grains rolling motion. Different boundary conditions of the profile have been implemented: a bedrock at the base, a free surface at the top, and periodic boundaries in the horizontal direction. The sand deposit is subjected to a harmonic excitation at the base. The simulations carried out have well reproduced the elastic and damping features relative to shear wave propagation in a vertical soil deposit. The excitation frequency is varied to better understand the phenomenon of wave propagation in granular medium. The conducted simulations highlighted a number of features of soil deposits response subjected to harmonic excitation at the base, including the movement amplification, the resonance phenomenon and the limitation of the displacement at the resonance. The micromechanical analysis showed that the intergranular slips increase with increasing the involved strain level. An inverse analysis is performed to determine a continuum-damped linear elastic model, whose response is similar to that of the discrete-element model. This analysis showed that the wave propagation velocity of the equivalent continuum model decreases with increasing excitation frequency. This finding could be attributed the decrease of shear modulus of the granular material as the deformation level increases.
About Failure of the LPG Tank Fastening Welds on the Chassis of Trucks
Authors: Florescu Virgil , Nedelcu Marius , Vida Dragoș-Bogdan , Mocanu Ștefan 
Published: August 2024

Abstract
The international road transport of dangerous goods is subject to strict regulations. Traffic realities and experiences accumulated as a result of periodic inspections of specific equipment (tanks) lead to their constant updating and improvement. This article is focused to a study related to the appearance over time of some cracks in the welded joints between the tank and the mounting supports on the truck chassis.
Stand With a High Degree of Universality for Prediction of Reliability and Tribological Behavior Studies for Materials Used in Transport Industry
Authors: Sasu Anca Ruxandra , Pavel Cristian , Vida Dragoș-Bogdan , Dumitriu Cristian Ștefan 
Published: August 2024

Abstract
In the context of the apparition of new materials used in manufacturing the elements that form the vehicles’ steering systems, both in the design and prototyping stages, the tests regarding their behavior from the tribology viewpoint represent an essential stage in the development of a product. The stands are generally dedicated to a specific configuration regarding the contact and/or the dynamics of the movements that the product can achieve. This paper presents a universal stand for such trials, which can be adapted to more extensive research.
Identification of superior hybrid clones for fibre biometry in Eucalyptus camaldulensis × E. tereticornis using multi trait stability index
Authors: Parveen Abdul Bari Muneera , Jayabharathi K. , Muthupandi Muthusamy , Kumar Naveen , Chauhan Shakti Singh , Rajasugunasekar D. , Dasgupta Modhumita Ghosh 
Published: August 2024

Abstract
Genotype × environment (G×E) interaction is a major challenge in selecting superior genotypes based on growth traits in Eucalyptus since phenotypic variability is significantly affected by environmental heterogeneity. The aim of the present investigation was to understand the relationship between wood property traits and fibre biometry in the bi-parental mapping population of E. camaldulensis × E. tereticornis across three locations and identify stable genotypes based on multiple traits to improve prediction accuracy in breeding programs. High broad-sense heritability was documented for fibre parameters indicating a good prospect of these traits for genotype selection in hybrid breeding programmes in Eucalyptus. Significant positive correlation of fibre parameters with cellulose, acoustic velocity, DMoE and negative correlation with lignin reiterate that the fibre traits can be improved by the selection of genotype for improved wood property traits. Multi-Trait Stability Index (MTSI) and weighted average of absolute scores of the genotype index (WAASB) short-listed four genotypes (C343, C327, C246 and C161) with improved wood property traits and the mean of selected genotypes for all traits was significantly higher than the grand mean of the overall genotypes. The identified superior and stable genotypes with improved wood properties and fibre biometry can be used in plantation programs or as genitors in breeding programs.
Why Budgeting in Small and Medium Enterprises Matters?
Authors: Srbinoska Dusica Stevcevska , Hristova Snezhana , Kazic Viktorija 
Published: August 2024

Abstract
Businesses utilize budgets to prioritize and allocate limited resources effectively, ensuring the smooth operation of essential events and activities. Effective budget management is pivotal for successful resource allocation, particularly for small and medium-sized enterprises (SMEs) which often face challenges during their initial stages, with ineffective budgeting being a significant contributor to failure. Budgets serve as a reflection of a firm’s strategy. This study aims to evaluate the influence of the budgeting process on the financial performance of SMEs in North Macedonia, exploring both the merits and drawbacks of budgeting as a management tool. To the best of the authors’ knowledge, this research is the first to connect the conceptual frameworks of budget incremental theory, priority-based budgeting theory, and risk-based budgeting theory with empirical evidence and conclusions specific to North Macedonia. The study also delves into potential challenges SMEs encounter in budget planning and decision-making Drawing from primary data collected through a validated survey administered to 45 Macedonian SMEs, empirical findings highlight that budgeting practices account for approximately half of the variations in SME financial performance. This suggests that, alongside budget planning, management, coordination, communication, and review processes, there are other significant factors influencing SME financial performance. Further exploration is warranted to identify these factors and their impacts on firm performance.
PRIMENA METODA I ALATA ZA PROCENU RIZIKA ZA BEZBEDNOST I ZDRAVLJE NA RADU U MEDICINSKOM RADNOM OKRUŽENJU
Authors: Novaković Dragana 
Published: August 2024

Pri izvođenju medicinskih poslova i rukovanja medicinskim instrumentima, radnici su izloženi potencijalnim opasnim rizicima. U istraživanju analizirane su tri radne pozicije: medicinska sestra, stomatološka sestra i laborant. Istraživanje je zasnovano na ispitivanju procene rizika Kinney metodom gde je fokus stavljen na analizu najopasnijih rizika a to su: hemijske i biološke štetnosi, napori i telesna naprezanja, nefiziološki položaj tela i mogućnost udara u opremu prilikom hitnih intervencija. Prikupljanje podataka je izvršeno metodom usmenog intervjuisanja zaposlenih na navedenim radnim pozicijama. U radu su predloženi načini i mere u cilju otklanjanja, smanjenja ili sprečavanja rizika.
Bem-Estar nas Escolhas Profissionais: Relato de Experiência em um Pré-Vestibular Popular
Authors: Matos Fabíola Rodrigues , Franco Eduardo Freitas , Massonetto Fernanda Barboza , Moro Gabriela Nicoleti , De Jesus Lívia Fonseca , Dias Mariza Rodrigues , Silva Sara Silveira 
Published: August 2024

A escolha profissional repercute em vários aspectos psicológicos, visto que a construção de carreira abarca significativa importância ao indivíduo que busca sua autonomia. Este projeto de extensão teve o objetivo de desenvolver práticas que promovam bem-estar em um pré-vestibular popular de cidade do interior de Minas Gerais. Participaram 28 estudantes, sendo 85,7% do gênero feminino (N=24), com média de idade de 19 anos (DP= 7,4). As atividades do projeto de extensão ocorriam do modo grupal, com duração de aproximadamente uma hora. Ao término das intervenções os estudantes consideraram haver desenvolvimento significativo de habilidades para o manejo das emoções durante o período do vestibular. Discute-se a relevância de intervenções com esta população.
Analisis Keterdapatan Kromium Heksavalen Pada Aliran Sungai Pertambangan Nikel di Kabupaten Konawe Utara
Authors: Hendrawan Suharjo Muhammad 
Published: August 2024

Daerah di Indonesia dimana banyak ditemukan komoditas nikel adalah Provinsi Sulawesi Tenggara, dengan potensi cadangan sebesar 97,4 miliar ton yang tersebar di lahan seluas 480 ribu hektar. Pada pertambangan yang merupakan daerah ultrabasa terdapat lapisan batuan yang mengandung mineral serta logam berat yang jika terlepas dapat mencamari lingkungan sekitar salah satunya adalah Kromium (Cr) logam tersebut dapat hadir dengan proses alami dengan bentuk bervariasi dari Cr (II) ke Cr (VI) (Jobby dkk., 2018). Kegiatan pengumpulan data terdiri dari 2 bagian yaitu pengumpulan data primer dan pengumpulan data sekunder. Kemudian lakukan pengujian laboratorium dengan metode AAS (Atomic Adsorption Spectrophotometer). pada lokasi penelitian di dua sampel yang memiliki nilai melebihi standar dari baku mutu yang di tetapkan di mana pada sampel as2+ dan as11+ yang memiliki nilai kadar logam Cr6+ yaitu 0,061 mg/l dan 0,06 mg/l. sedangkan untuk sampel lainnya di dapatkan hasil kandungan Cr6+ masih berada di bawah nilai standar dari baku mutu yaitu di bawah 0,05 mg/l. Dari hasil pengujian di dapatkan kadar logam Cr6+ yang melebihi standar baku yaitu pada sampel as2+ dengan kadar Cr6+ 0,061 mg/l dan as11+ 0,06 mg/l Tingginya kadar di 2 sampel di sebabkan karena adanya proses penambangan di lokasi penelitian
Powder Characterization Methods
Authors: Patra Anshuman 
Published: August 2024

Abstract
This chapter explains how to measure the shape, size, microstructure, and composition of powders as well as their flowability and crystallization behavior. It presents detailed workflows and calculations based on SEM, TEM, FESEM, and STEM imaging, x-ray diffraction, differential scanning calorimetry, EDS and EELS spectroscopy, and powder sieving. It also discusses the measurement of crystallite size, lattice mismatch, and crystallinity and the relationship between surface area and flowability.
Penilaian Kinerja Keuangan PT. Bank Central Asia, Tbk dengan Menggunakan Metode Economic Value Added Sebagai Alat Pengukur Kinerja Perusahaan Periode 2015-2019
Authors: Antika Yessi , Usman Benny , Kurbani Adie 
Published: August 2024

ABSTRACTÂ This study aims to determine the financial performance of PT. Bank Central Asia, Tbk using the Economic Value Added (EVA) method in the periode 2015 to 2019. This is of course useful for knoing the extent of the results the company gets in carrying out its business activities.the observed data is a financial report from PT. Bank Central Asia, Tbk from 2015 to 2019 obtained from Galeri Bursa Efek Indonesia at the UNIKA Musi Charitas Palembang. Then teh data are analyzed using the EVA method, which is by determining the NOPAT (Net Operating Profit After Tax) and Capital Charges. After that the value of EVA will be obtained from each years. From the results of the research conducted, it was found that the EVA value from 2015 to 2019 was positive, this shows that the companyâ€™s management has succeeded in creating economic value added for the company. Meaning that the resulting operating profit after tax can meet the expectations of creditors and company shareholders (investor).Â Keywords : financial performance, EVA methodÂ ABSTRAKÂ Penelitian ini bertujuan untuk mengetahui kinerja keuangan dari PT. Bank Central Asia, Tbk dengan menggunakan metode Economic Value Added (EVA) pada periode tahun 2015 sampai dengan tahun 2019. Hal ini tentunya berguna untuk mengetahui sejauh mana hasil yang didapatkan perusahaan dalam menjalankan kegiatan usahanya. Data yang diamati merupakan laporan keuangan dari PT. Bank Central Asia, Tbk tahun 2015 sampai dengan tahun 2019 yang diperoleh dari Galeri Bursa Efek Indonesia di UNIKA Musi Charitas Palembang. Kemudian data dianalisis dengan menggunakan metode EVA, yaitu dengan menentukan NOPAT (Net Operating Profit After Tax/ Laba Bersih Operasi Setelah Pajak) dan Capital Charges (Biaya Modal). Setelah itu akan diperoleh nilai EVA dari tiap tahunnya. Dari hasil penelitian yang dilakukan didapat nilai EVA mulai dari tahun 2015 sampai dengan tahun 2019 yang bernilai positif atau EVA > 0, hal ini menunjukkan bahwa manajemen perusahaan telah berhasil menciptakan nilai tambah ekonomi bagi perusahaan. Artinya laba operasi setelah pajak yang dihasilkan dapat memenuhi harapan para kreditor dan pemegang saham perusahan (investor).Â Kata Kunci: Kinerja keuangan, metode EVA
РОЛЬ ІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ У ФОРМУВАННІ ПРОФЕСІЙНОЇ КОМПЕТЕНТНОСТІ МАЙБУТНІХ ТРЕНЕРІВ-ВИКЛАДАЧІВ
Authors: ЧОПИК Тетяна , ЛИТВИНОВ Іван , ГОНЧАРУК Сергій , СІВАК Вадим 
Published: August 2024

У роботі розглянуто особливості формування професійної компетентності у процесі фахової підготовки засобами інформаційних технологій. Інформаційні технології – це чудовий спосіб більш ефективно використовувати ресурси. Сучасні інформаційні технології переплітаються у багатьох аспектах життя. Способи отримання інформації швидко змінюються і в результаті очікується, що за допомогою інформаційних технологій освіта стане доступнішою. Інформаційні технології стали важливим та вплинули на систему освіти. Нещодавня пандемія COVID–19 ще більша спонукала застосуванню інформаційних технологій в освіті. Сьогодні інформаційні технології не лише постачальник знань, а й оцінювач. Інформаційні технології з'явилися для поширення загальних знань і є основною рушійною силою реформ освіти.
Renal medullary perfusion differs from that in renal cortex in patients with sepsis associated acute kidney injury and correlates with renal function prognosis: A prospective cohort study
Authors: Chen Rongping , Liu Dawei , Zhao Hua , Wang Xiaoting 
Published: August 2024

BACKGROUND: Renal perfusion status remains poorly studied at the bedside during sepsis associated acute kidney injury (AKI). The aim of the study is to examine renal cortical and medullary perfusion using renal contrast enhanced ultrasound (CEUS) in septic patients. METHODS: In this single-center, prospective longitudinal study, septic patients were enrolled. Renal ultrasonography was performed within 24 hours of ICU admission (D1), then repeated at D3, D5 and D7. Each measurement consisted of three destruction replenishment sequences that were recorded for delayed analysis with dedicated software (Vuebox). Renal cortex and medulla perfusion were quantified by measuring time to peak (TTP). Receiver operating characteristic (ROC) analysis was used to evaluate 28-day renal prognosis. RESULTS: The study included 149 septic patients, including 70 non-AKI patients and 79 AKI patients. Both renal cortical and medullary TTP was longer in the AKI group than in the non-AKI group. The difference of TTP between renal cortex and medulla in AKI group was higher than that in the non-AKI group ( p = 0.000). Medullary TTP on day 3 had the best performance in predicting the prognosis of 28-day renal function (AUC 0.673, 95% confidence interval 0.528–0.818, p = 0.024), and its cut-off value was 45 s with a sensitivity 52.2% and a specificity of 82.1%. Cortical TTP on day 3 also had the performance in predicting the prognosis of 28-day renal function (AUC 0.657, 95% confidence interval 0.514–0.800, p = 0.039), and its cut-off value was 33 s with a sensitivity 78.3% and a specificity of 55.0%. CONCLUSION: Renal medullary perfusion alterations differ from those in cortex, with the medulla is worse. Simultaneous and dynamic assessment of cortical and medullary microcirculatory flow alterations necessary. TTP on day 3, especially medullary TTP, seems to be a relatively stable and useful indicator, which correlates with 28-day renal function prognosis in septic patients. Early correction of renal cortical and medullary perfusion alterations reduces the incidence of adverse renal events.
Tendência de Mortalidade por Cânceres Hematológicos em Sergipe e sua Distribuição Geoespacial de 1980 a 2021
Authors: Ferreira Ríllary de Oliveira Silva , Moura Alex Rodrigues , Lima Carlos Anselmo , Silva Ângela Maria da 
Published: August 2024

Introdução: O câncer é a principal causa de morte de origem não metabólica no mundo. Os cânceres sanguíneos têm origem no sistema hematopoiético e são classificados em linfomas, leucemias, neoplasias de plasmócitos e síndromes mielodisplásicas. Objetivo: Descrever a tendência de mortalidade das principais neoplasias hematológicas no Estado de Sergipe entre 1980 e 2021 e sua distribuição espacial. Método: Foram estudadas, por meio de softwares de análise longitudinal e geoespacial, as taxas de mortalidade do Sistema de Informação sobre Mortalidade para o Estado e analisadas por grupo etário, sexo, tipo de neoplasia e município. Foram construídos gráficos de tendência temporal e analisadas suas variações percentuais anuais e médias, e confeccionados mapas de geodistribuição das taxas, com áreas de contiguidade, e análise de significância estatística pelos métodos Moran e LISA. Resultados: As taxas de mortalidade apresentaram-se constantemente crescentes no período em todas as neoplasias e grupos em que houve significância estatística. O maior número de óbitos ocorreu em homens com crescimento anual de 3% (IC 95%; 2,5-3,5). As leucemias corresponderam a 48,78% do total de óbitos. A ordem decrescente de mortalidade foi leucemias, linfoma não Hodgkin e mieloma múltiplo. O grupo etário de 65+ representou 35,76% do total de óbitos. As áreas de risco foram as Mesorregiões Leste e Agreste e a Região Grande Aracaju. Conclusão: A tendência de mortalidade por cânceres hematológicos em Sergipe é um tema pouco analisado. As taxas de mortalidade têm crescido no Estado, destacando-se leucemias, sexo masculino, idosos, e municípios com maior desigualdade e produção agrária.
Unsupervised identification of Greater Caribbean manatees using Scattering Wavelet Transform and Hierarchical Density Clustering from underwater bioacoustics recordings
Authors: Merchan Fernando , Contreras Kenji , Poveda Héctor , Guzman Hector M. , Sanchez-Galan Javier E. 
Published: August 2024

IntroductionThis work presents an unsupervised learning-based methodology to identify and count unique manatees using underwater vocalization recordings.MethodsThe proposed approach uses Scattering Wavelet Transform (SWT) to represent individual manatee vocalizations. A Manifold Learning approach, known as PacMAP, is employed for dimensionality reduction. A density-based algorithm, known as Hierarchical Density-Based Spatial Clustering of Applications with Noise (HDBSCAN), is used to count and identify clusters of individual manatee vocalizations. The proposed methodology is compared with a previous method developed by our group, based on classical clustering methods (K-Means and Hierarchical clustering) using Short-Time Fourier Transform (STFT)-based spectrograms for representing vocalizations. The performance of both approaches is contrasted by using a novel vocalization data set consisting of 23 temporally captured Greater Caribbean manatees from San San River, Bocas del Toro, in western Panama as input.ResultsThe proposed methodology reaches a mean percentage of error of the number of individuals (i.e., number of clusters) estimation of 14.05% and success of correctly grouping a manatee in a cluster of 83.75%.DiscussionThus having a better performances than our previous analysis methodology, for the same data set. The value of this work lies in providing a way to estimate the manatee population while only relying on underwater bioacoustics.
Body fat ratio as a novel predictor of complications and survival after rectal cancer surgery
Authors: Zhao Haiyuan , Liu Gang , Li Yang , Lu Feixiang , Yang Nianzhao , Zhao Jun 
Published: August 2024

BackgroundThe present study aimed to evaluate the association between body fat ratio (BFR), visceral fat area (VFA), body mass index (BMI) and visceral fat density (VFD) and assess their reliability in assessing risk of postoperative complications and survival status in patients with rectal cancer (RC).Materials and methodsThe present study retrospectively included 460 patients who underwent surgical treatment for RC at the First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College, Wuhu, China) between September 2018 and July 2021. BFR, VFA, BMI, and VFD were measured and basic information, clinical data, complications and survival were recorded.ResultsStatistical analysis was performed to determine optimal BFR cut-off and evaluate group differences. BFR demonstrated a significant positive correlation with VFA (R = 0.739) and BMI (R = 0.783) and significant negative correlation with VFD (R = −0.773). The areas under the receiver operating characteristic curve of BFR, VFA, BMI, and VFD in predicting postoperative complications in RC were all &gt;0.7 and the optimal cut-off value of BFR was 24.3. Patients in the BFR-low group had fewer postoperative complications, lower intraoperative indices, shorter hospitalization times and lower costs than those in the BFR-high group. BFR predicted complications with high diagnostic significance and was validated by multiple models. Furthermore, patients in the BFR-high group had a longer overall survival compared with patients in the BFR-low group.ConclusionBFR was associated with BMI, VFA, and VFD. A BFR threshold of 24.3 was correlated with decreased complications and enhanced long-term survival.