bluuebunny/crossref_metadata_2025 huggingface dataset:
Clinical Effect of Endosonography on Overall Survival in Patients with Radiological N1 Non–Small Cell Lung Cancer
Authors: Kim Bo-Guen , Jeong Byeong-Ho , Park Goeun , Kim Hong Kwan , Shim Young Mog , Shin Sun Hye , Lee Kyungjong , Um Sang-Won , Kim Hojoong , Cho Jong Ho
Published: December 2023

Purpose It is unclear whether performing endosonography first in non–small cell lung cancer (NSCLC) patients with radiological N1 (rN1) has any advantages over surgery without nodal staging. We aimed to compare surgery without endosonography to performing endosonography first in rN1 on the overall survival (OS) of patients with NSCLC.Materials and Methods This is a retrospective analysis of patients with rN1 NSCLC between 2013 and 2019. Patients were divided into ‘no endosonography’ and ‘endosonography first’ groups. We investigated the effect of nodal staging through endosonography on OS using propensity score matching (PSM) and multivariable Cox proportional hazard regression analysis.Results In the no endosonography group, pathologic N2 occurred in 23.0% of patients. In the endosonography first group, endosonographic N2 and N3 occurred in 8.6% and 1.6% of patients, respectively. Additionally, 51 patients were pathologic N2 among 249 patients who underwent surgery and mediastinal lymph node dissection (MLND) in endosonography first group. After PSM, the 5-year OSs were 68.1% and 70.6% in the no endosonography and endosonography first groups, respectively. However, the 5-year OS was 80.2% in the subgroup who underwent surgery and MLND of the endosonography first group. Moreover, in patients receiving surgical resection with MLND, the endosonography first group tended to have a better OS than the no endosonography group in adjusted analysis using various models.Conclusion In rN1 NSCLC, preoperative endosonography shows better OS than surgery without endosonography. For patients with rN1 NSCLC who are candidates for surgery, preoperative endosonography may help improve survival through patient selection.
Cyclic coverings of graphs. Counting rooted spanning forests and trees, Kirchhoff index, and Jacobians
Authors: Mednykh Alexander Dmitrievich , Mednykh Il'ya Aleksandrovich
Published: December 2023

The purpose of this survey is to describe invariants of cyclic coverings of graphs. The covered graph is assumed to be fixed, and the cyclic covering group has an arbitrarily large order. A classical example of such a covering is a circulant graph. It covers a one-vertex graph with a prescribed number of loops. More sophisticated objects representing the family of cyclic coverings include $I$-, $Y$-, and $H$-graphs, generalized Petersen graphs, sandwich-graphs, discrete tori, and many others. We present analytic formulae for counting rooted spanning forests and trees in cyclic coverings, establish their asymptotics, and study the arithmetic properties of these quantities. Moreover, in the case of circulant graphs we give exact formulae for computing the Kirchhoff index and present structural theorems for the Jacobians of such graphs. Bibliography: 95 titles.
Existence, uniqueness, and stability of best and near-best approximations
Authors: Alimov Alexey Rostislavovich , Ryutin Konstantin Sergeevich , Tsar'kov Igor' Germanovich
Published: December 2023

Existence and stability of $\varepsilon$-selections (selections of operators of near-best approximation) are studied. Results relating the existence of continuous $\varepsilon$-selections with other approximative and structural properties of approximating sets are given. Both abstract and concrete sets are considered - the latter include $n$-link piecewise linear functions, $n$-link $r$-polynomial functions and their generalizations, $k$-monotone functions, and generalized rational functions. Classical problems of the existence, uniqueness, and stability of best and near-best generalized rational approximations are considered.
Bibliography: 70 titles.
Randomized Trial of Two Exercise Programs to Increase Physical Activity and Health-Related Quality of Life for Persons With Spinal Cord Injury
Authors: Butzer John F. , Kozlowski Allan J , Hern Rachel , Gooch Cally
Published: December 2023

Objectives

To compare the effectiveness of two different interventions that promote physical activity in individuals with traumatic spinal cord injury (SCI) and determine the effect of relapse prevention.

Methods

A sequential, multiple assignment, randomized trial was conducted at a universally designed community-based exercise facility. Participants were individuals with traumatic SCI, >3 months post injury, levels C5 to T12, age ≥18 years (N = 79). After randomization, Bridge Program participants completed an 8-week personalized, less intense, exercise program informed by American College of Sports Medicine (ACSM) guidelines and supported with hands-on peer mentoring, exercise of choice, and caregiver training. Structured Exercise participants completed an 8-week program in a group format based on ACSM guidelines. After intervention, participants were randomized to receive or not receive relapse prevention for 6 months. The time and intensity of physical activity and psychological change in depression, anxiety, self-efficacy, and function were assessed with self-reported measures.

Results

Compared to baseline, physical activity increased post intervention for both the Bridge and Structured Exercise programs. Compared to baseline, participants in the Bridge Program recorded fewer anxiety symptoms. No significant changes were noted for either program in depressive symptoms, self-efficacy, or function. There was no difference in relapse prevention between the two groups at 6 months.

Conclusions

The Bridge Program, a novel personalized exercise program with peer support, exercise of choice, and caregiver training, and a structured exercise program both improved self-reported physical activity, but the Bridge Program also reduced anxiety symptoms. This study provides important insight into the limitations of commonly used measures of physical activity and psychosocial domains in people with SCI.
Leisure, Recreation, and Life Satisfaction: A Longitudinal Study for People With Spinal Cord Injury
Authors: Zhao Haoai , Cole Shu
Published: December 2023

Background

Leisure and recreation (LR) are positively associated with social integration and life satisfaction in people with spinal cord injury (SCI). However, few studies have longitudinally observed long-term changes in LR participation among people with SCI and discussed the association of these activities with social integration and life satisfaction.

Objectives

This study aims to determine for people with SCI, within a 45-year period, the association between mobility and LR participation; the associations between LR participation and social integration and life satisfaction, respectively; and whether the association between LR participation and life satisfaction is mediated by social integration.

Methods

Growth modeling and linear mixed modeling were employed as the primary data analysis tools to explore longitudinal changes in LR participation, social integration, and life satisfaction. A mediation test was conducted to examine the potential mediation effect of social integration on the relationship between LR participation and life satisfaction.

Results

The mobility level, LR participation hours, and social integration of people with SCI decreased gradually during the 45-year period, whereas life satisfaction increased as they lived longer with the injury. LR participation was consistently and positively associated with social integration and life satisfaction of people with SCI. A mediation effect by social integration was observed between LR and life satisfaction.

Conclusion

A decline in mobility level was associated with a decrease in LR participation over time for people with SCI. Engaging in LR activities regularly and maintaining a certain level of social interaction are consistently and positively associated with long-term life satisfaction.
A dataset of small-mammal detections in West Africa and their associated micro-organisms
Authors: Simons David , Attfield Lauren A. , Jones Kate E. , Watson-Jones Deborah , Kock Richard
Published: December 2023

Rodents, a globally distributed and ecologically important mammalian order, serve as hosts for various zoonotic pathogens. However, sampling of rodents and their pathogens suffers from taxonomic and spatial biases. This affects consolidated databases, such as IUCN and GBIF, limiting inference regarding the spillover hazard of zoonotic pathogens into human populations. Here, we synthesised data from 127 rodent trapping studies conducted in 14 West African countries between 1964 and 2022. We combined occurrence data with pathogen screening results to produce a dataset containing detection/non-detection data for 65,628 individual small mammals identified to the species level from at least 1,611 trapping sites. We also included 32 microorganisms, identified to the species or genus levels, that are known or potential pathogens. The dataset is formatted to Darwin Core Standard with associated metadata. This dataset can mitigate spatial and taxonomic biases of current databases, improving understanding of rodent-associated zoonotic pathogen spillover across West Africa.
Assessment of Water Quality During 2018-2022 in the Vam Co River Basin, Vietnam
Authors: Phong N. T. , Vinh P. T. , Luan N. D. , Dung P. H. , Tanim A. H. , Gagnon A. S. , Lohpaisankrit W. , Hoa P. T. , Truong P. N. , Vuong N. D.
Published: December 2023

Water pollution in the Vam Co River basin is becoming more complicated due to untreated wastewater being directly discharged into rivers and canals from agricultural, industrial, and domestic activities. To assess the water quality in this area, this study conducted monitoring at ten sampling locations (S1-S10) from 2018 to 2022, calculated the Water Quality Index (WQI) for each parameter, and simulated water quality in 2022 using the 1D- MIKE 11 model developed by DHI with two main modules including HD and AD. The findings showed that most parameters did not surpass the allowable limits per QCVN 08-MT:2015/BTNMT on Vietnam National Technical Regulation on Surface Water Quality. However, organic and microbial pollution led to certain parameters, such as BOD5, COD, and Coliform, exceeding the limits. The lowest water quality was recorded in Long An province, especially at sampling locations S3, S4, and S6, with the average WQI for nine water quality parameters from February to July 2022 being 58.4, 67.8, and 21.1, respectively. Additionally, the simulation outcomes of the MIKE 11 model salinity, BOD5, DO, and NH4 aligned with the real measurements taken. It has been observed that the southern area of the Vam Co River Basin possesses poorer water quality than the northern part, with Long An province located downstream of the Vam Co River basin being the primary source of pollution. The development of this hydraulic model signifies a crucial milestone in comprehending and regulating the effects of pollution in monitoring and managing water management systems, controlling saline intrusion, and ensuring water supply for agricultural production and daily use in the Vam Co River basin.
A Review of Deep Transfer Learning Strategy for Energy Forecasting
Authors: Sankari S. Siva , Kumar P. Senthil
Published: December 2023

Over the past decades, energy forecasting has attracted many researchers. The electrification of the modern world influences the necessity of electricity load, wind energy, and solar energy forecasting in power sectors. Energy demand increases with the increase in population. The energy has inherent characteristics like volatility and uncertainty. So, the design of accurate energy forecasting is a critical task. The electricity load, wind, and solar energy are important for maintaining the energy supply-demand equilibrium non-conventionally. Energy demand can be handled effectively using accurate load, wind, and solar energy forecasting. It helps to maintain a sustainable environment by meeting the energy requirements accurately. The limitation in the availability of sufficient data becomes a hindrance to achieving accurate energy forecasting. The transfer learning strategy supports overcoming the hindrance by transferring the knowledge from the models of similar domains where sufficient data is available for training. The present study focuses on the importance of energy forecasting, discusses the basics of transfer learning, and describes the significance of transfer learning in load forecasting, wind energy forecasting, and solar energy forecasting. It also explores the reviews of work done by various researchers in electricity load forecasting, wind energy forecasting, and solar energy forecasting. It explores how the researchers utilized the transfer learning concepts and overcame the limitations of designing accurate electricity load, wind energy, and solar energy forecasting models.
Heavy Metal Contamination Assessment in Sediments, Soils and Surface Waters in Agriculture-Based Rural Chhattisgarh, India, and Evaluation of Irrigation Water Quality
Authors: Baruah Manash Protim , Das Subhajit , Rajkonwar Monjil , Thirumala Mahesh
Published: December 2023

Regional geochemical mapping was carried out in Bilaspur and Korba Districts of Chhattisgarh, and stream sediments/slope wash, soil, and water samples were analyzed for concentration of heavy metals. The study contributes to understanding heavy metals contamination of sediments, soils, and water due to anthropogenic activity, mainly in agriculture-based rural areas. The study reveals that high geochemical anomalies observed for heavy metals like Ni, Cr, As, and Zn in sediments and soil samples are due to the extensive uses of phosphatic fertilizer and soil amendments in the form of poultry and swine manure. Water quality assessment of major streams in the study areas shows that the water is suitable for domestic and agricultural uses. Correlation analysis reveals that the chemical weathering of rock-forming minerals doesn’t control the surface water chemistry of the study area and is also an anthropogenic source of sodium in water. This study also shows the importance of the country’s geochemical mapping database, which will have much broader applications than conventional mineral exploration and geological mapping.
Ability of Water Lettuce (Pistia stratiotes) And Water Hyacinth (Eichhornia crassipes) To Remove Methylene Blue Anionic Surfactant (MBAS) From Detergent Wastewater
Authors: Hendrasarie N. , Redina C.
Published: December 2023

ABS was the first surfactant used in detergent formulations, but because its molecular structure is branched, it is difficult to decompose biologically, making ABS a toxic compound for the environment. This study aims to remove MBAS surfactant, using a combination of phytoremediation and filtration methods to remove surfactant (MBAS) Chemical Oxygen Demand (COD) from detergent wastewater by optimizing operating factors such as pH, contact time, plant type, and filter media. Water lettuce (Pistia stratiotes) and water hyacinth (Eichhornia crassipes) were selected as plant species and silica-activated carbon was used as filter media. Water lettuce and hyacinth were grown in a 10-liter reactor with detergent wastewater samples for 6 and 12 days. Filter media are placed in the reactor in use, and aeration is done. The efficiency for reducing COD was 81.73%, and the efficiency for surfactant was 99.42% for each experiment, which was thought to be because of plant adsorption and filtering processes. The water lettuce (Pistia stratiotes) plant had the maximum adsorption capability for all the qualities evaluated, with a surfactant content in the roots of 27543.24 (mg/kg MBAS), compared to the water hyacinth plant, which only absorbed 2597.95 (mg/kg MBAS).
Assessment of SO2 Emissions from Cement Industries Utilizing Limestone with High Pyritic Sulfur Content: Case Study of Cement Plants in the Jaintia Hills District, Meghalaya, India
Authors: Mandal Arnab , Choudhury M. K. , . Nazimuddin , Gargava Prashant
Published: December 2023

In properly operated Cement Plants, SO2 emissions are mostly caused by pyritic sulfur (sulfides) in the used limestones, accounting for approximately 85% of the raw mill in the plant. However, the pyritic sulfur content in limestones of the Jaintia Hills district of Meghalaya and their influence on the SO2 Emission from cement industries of Meghalaya have not been studied so far. The current study is conducted to perform an in-depth investigation of pyritic sulfur content in limestone reserves used by Meghalaya Cement Industries to assess the SO2 emission in the cement industries using high pyritic sulfur limestones and review the existing technology for the recommendation of the most suitable technology to minimize the SO2 Emissions. Random testing of collected limestone samples from various locations of Captive Mining sites in Cement Industries is performed to assess average pyritic sulfur concentration along different mining benches. Pyritic Sulfur Content (wt.%) in collected limestones varies from 0.15% to 3.5%. Polynomial Regression Analysis shows that Avg.SO2 Emission(Y) from Klin Stack can be represented as a function of pyritic sulfur content (X) (wt.%) of used limestones in the process: Y = 273.7X2 + 21.46X + 422.76. Based on the pyritic sulfur content in limestones, it is observed that “the more the Pyritic Sulfur content is, Darker the Limestone Samples are.” Hence, A Colour Scale has been prepared to visualize higher pyritic sulfur content in limestones. For longer-term sustainability, installing a Flue-Gas Desulfurization (FGD) unit at the kiln stack outlet may be included in the manufacturing process of cement plants to reduce the SO2 Emissions from Stack.
An Eco-friendly Solution for Oil Spill Absorption
Authors: Arquam Ahmad , Deshmukh Minal , Pathan Aadil
Published: December 2023

It is extremely difficult to clean up accidental oil spills in water since conventional oil sorbents absorb much more water in addition to the oil. Alternatively, cleanup techniques might lead to secondary contamination. This study examines and measures the oil absorption capacities of two hydrophobic natural fibers: water hyacinth (Eichhornia crassipes) and lotus (Nelumbo nucifera). At the laboratory scale, the absorption of engine oil, vegetable oil, and diesel oils onto various dry biomass materials, including water hyacinth and lotus with different particle sizes (BSS-44, BSS-60, BSS-100, BSS-120, BSS-160, and BSS-200), was investigated. Water hyacinth shows a higher absorption efficiency for all samples as compared to the lotus.
Effect of Fulvic Acid on the Denitrification in Deep Subsurface Wastewater Infiltration System
Authors: Lv Jingjing , Li Jingjing , Dou Yanyan , Chen Guoke , Ye Yubing , Hou Li’an
Published: December 2023

This work aims to explore the impact of fulvic acid (FA) on denitrification within the purification process of sewage in the deep subsurface wastewater infiltration system (DSWIS). In the system, an organic glass column (height = 2.40 m; radius = 0.30 m) was filled with several layers of soil. Simulated domestic wastewater and extracted FA from landfill leachate were used in the experiments. It was found that before and after the addition of FA, COD, and NH4+-N were efficiently removed when a hydraulic load was 8 cm·d-1. Moreover, after FA addition, the removal efficiency of TN was enhanced from 67.74% to 78.01%. Organic matter transformation analysis indicated that in the under part, the shortage of carbon sources limited the denitrification prior to FA addition, resulting in a low TN removal efficiency. However, after adding FA, more FA-like substances were transferred into protein-like matters than before the addition of FA, which has helped produce more easily biodegradable organics for denitrification. So, the addition of FA could enhance the denitrification process in the system of DSWIS.
Assessment of Particulate and Gaseous Fluoride in Phosphate Fertilizer Industry
Authors: Jawahar S. , Shridhar K. , Dhananjayan V. , Panjakumar K. , Ravichandran B. , Nath A. Ravinder , Rao Nirmala Babu
Published: December 2023

Fluorides are emitted in both gaseous and particle forms in the industrial sector. However, studies usually only report total fluoride content. Therefore, the study aimed to assess the particulate, gaseous fluoride and correlate it with the respirable dust particles in Single Super Phosphate (SSP), Granular Single Super Phosphate (GSSP), and administration divisions of the industry. Respirable dust particles, particulate fluoride, and hydrogen fluoride in the work environment were collected on a filter cassette containing an MCE filter paper (0.8 micron 37-mm) and Na2CO3 impregnated backup pad, respectively, using a personal sampler. The fluoride samples were analyzed using Ion Selective Electrode (ISE) and expressed as milligrams per meter cube (mg.m-3). The respirable dust, particulate, and gaseous fluoride content were found to have statistically significant differences (p<0.001) between the divisions (SSP, GSSP, and administration) in the static monitoring, whereas, in the case of personal monitoring, no significant differences were observed. Average airborne respirable, particulate, and gaseous fluoride levels in static monitoring were 1.37, 1.03, 0.20 mg.m-3, 0.018, 0.008, 0.001 mg.m-3, and 0.808, 0.403, 0.026 ppm in SSP, GSSP and administration respectively, whereas in personal monitoring the average respirable, particulate and gaseous fluoride concentrations were 1.18, 0.85, 0.30 mg.m-3, 0.0013, 0.007, 0.002 mg.m-3 and 0.356, 0.258, 0.011 ppm in SSP, GSSP and administration respectively. The present study observed that the levels of fluoride decreased with an increase in distance from SSP, followed by GSSP and administration. It indicates that the fluoride exposure was inversely proportional to the distance of the source. This study outcome will help to design a policy and intervention to mitigate fluoride exposure among workers.
Microbiological Quality of Drinking Water and Food in a Rural Community
Authors: Rapeepan Y. , Piyabhorn P. , Phatcharaporn P. , Theethawat S.
Published: December 2023

Safe water and food are essential for good human health. The contamination of water with infected fecal bacteria is common in areas with poor standards of hygiene and sanitation. This study investigated total coliform bacteria, fecal coliform bacteria, and E.coli in drinking water and food stalls using water from a rural community, where the rural living conditions increase the risk of water-related diseases. In total, 40 samples of bottled drinking water, 50 water samples from vending machines, 30 samples of household drinking water, 30 food samples were collected from household food, and 60 food samples were collected from food stalls, and coliform bacteria contamination was determined using the most probable number (MPN) technique. The results revealed that all the water and food samples contained coliform bacteria contamination, while all the water samples and 50% of the food samples contained fecal coliform bacteria. The numbers of household food samples contaminated with coliform bacteria and E.coli were 29 (97%) and 12 (40%), respectively. Entrepreneurs should be regularly maintaining clean drinking water vending machines. The government sector should be urgently solving the problem of drinking water standards to ensure suitable consumer safety.
Automatic Water Recycling Plant
Authors: S. Vanarse Paras , M. Gondhale Manasvi , S. Mali Adhiraj , B. Jagtap Tejas , Kakade A.B.
Published: December 2023

The project aims to automate the water recycling plant which is used for the wastewater treatment plant at Rajarambapu Institute of Technology (RIT). The current wastewater treatment plant process is manual, and requires a significant amount of manpower. This project will automate the plant using sensors, actuators, and controllers to reduce the need for manual labour and improve the efficiency of the water recycling process. A PIC18F4520 microcontroller is used in the project to control the entire process. Normal valves are replaced by solenoid valves which will be operated by a relay driver circuit. Different modes are created with a keypad and displayed on a 16x2 LCD. A water sensor has been made to sense the water level in tanks.
Physical Exercise Recommendations in Muscle and Weight Loss Due to COVID-19. A Narrative Review
Authors: Silva Luiz Augusto da , Brasil Marcos Roberto
Published: December 2023

Introduction: A muscle loss is associated with a symptomatic Coronavirus disease 2019 (COVID-19) by histologic and body compositions and biochemical analysis in quantification measures. Is unclear the mechanism for muscle damage in these patients, but the tomographic measurement is a result that appears in the analyses in hospitalized patients. Objective: The aim of this study is to evaluate the influence of COVID-19 on weight loss, cachexia and sarcopenia. Methods: The literature review was conducted according to the SANRA Statement utilizing PubMed, Lilacs, Google Scholar and Cochrane Library databases. First, to identify relevant publications about COVID-19 and muscle and weight loss, the combined search terms were used: (1) COVID-19 OR SARS-CoV-2 (2) cachexia OR muscle wasting and (3) exercise OR nutrition. Results and conclusions: Previous information related the cytokines, nutrition, pharmacological treatment, physical inactivity during intensive care unit (ICU) stays, mechanical ventilation are associated with de sarcopenia and cachexia in COVID-19 patients. In studies area association between imaging and physical test performance, anthropometric measures and muscle dystrophy blood marks.
Resposta aguda da autoliberação miofascial associado a mobilidade articular no tornozelo em praticantes de cross training
Authors: Rocha Junior Walci Alves , Cantão Elbert Wander , Borges Ludmila Jayme , Borges Fábio Vieira de Andrade
Published: December 2023

A articulação do tornozelo necessita de estabilidade e boa amplitude de movimento (ADM) no plano sagital para melhorar o rendimento físico e prevenir lesões em praticantes de Cross Training (CT), modalidade variada e de alta intensidade. Objetivo: Analisar a resposta aguda de uma sessão de auto liberação miofascial (ALMF) associado a exercícios de mobilidade articular (MA) na ADM de tornozelo em praticantes de CT. Resultados: As medidas obtidas através do goniômetro foram maiores no pós-teste (M=37,69; DP=4,107) quando comparados com o pré-teste (M=31,66; DP=3,798) (t(31)=29,678, p<0,001), sem diferença entre sexos (t(30)=0,447, p=0,658). Conclusão: A intervenção utilizada mostrou-se eficiente com aumento médio de 6,03 graus entre as medidas pré-teste e pós-teste.
Dança e Educação Física: um estudo com professores das escolas municipais de Fortaleza-CE
Authors: Oliveira José  Jander Teixeira de , Pereira Arliene Stephanie Menezes , Souza Symon Tiago Brandão de
Published: December 2023

A escola é um espaço capaz de proporcionar habilidades físico-motoras, psicológicas, afetivas e socioculturais e ainda permitindo aos discentes o desenvolvimento de competências, além do contato com pessoas e culturas diferentes. A Dança é um conteúdo obrigatório definido pelos Parâmetros Curriculares Nacionais no Bloco de Conteúdos Atividades Rítmicas e Expressivas. E ainda na Base Nacional Comum Curricular que a propõe como uma unidade temática no Ensino Fundamental em uma construção progressiva a partir dos objetos do conhecimento: Dança no contexto comunitário e regional; Danças do Brasil e do mundo; Danças de matrizes indígenas e africanas; e Danças urbanas. O presente trabalho objetivou analisar a percepção dos professores de Educação Física sobre o ensino da Dança em cinco escolas municipais do bairro Conjunto Ceará, na cidade de Fortaleza-CE. Para isso, a metodologia utilizada foi um questionário específico sobre Dança (Wholqol-Bref), dividido em Blocos temáticos e aplicado com os docentes das escolas a fim de saber quais suas percepções sobre o conhecimento do conteúdo Dança, o desenvolvimento que a Dança é capaz de proporcionar, as dificuldades encontradas e os interesses sobre a temática e sua abrangência. Os resultados apontaram que há uma defasagem referente ao conteúdo de Dança e dificuldades para trabalhar as abordagens e metodologias de aulas sobre o processo de ensino-aprendizagem dos discentes. Confirmou-se também que os professores possuem pleno conhecimento quanto aos benefícios que o conteúdo possui.
Auriculoterapia e exercício físico resistido na melhora da qualidade de vida de pacientes em hemodiálise
Authors: Puhle Josiano Guilherme , Weber Pâmela Letícia , Hoffmann Alessandra Yasmin , Oliveira Natan Rodrigues de , Arraes Victória Galletti dos Santos , Lima Lucas Zannini Medeiros , Zietz Ana Carolina Gonçalves , Silva Guilherme Vinicio de Sousa , Silva Débora Tavares de Resende e
Published: December 2023

A perda na qualidade de vida é um achado comum em pacientes com doença renal crônica durante o tratamento hemodialítico e está associada ao desenvolvimento de outros processos patológicos, bem como na progressão da própria doença. Assim, o objetivo do presente trabalho foi avaliar o efeito da auriculoterapia e do exercício físico resistido, associados ou não, com terapias não farmacológicas sobre a qualidade de vida de pacientes com doença renal crônica submetidos à hemodiálise. A amostra foi dividida em 4 grupos sendo: Grupo Controle, Grupo Auriculoterapia, Grupo Exercício Físico Resistido, Grupo Auriculoterapia+Exercício Físico Resistido. A qualidadede vida foi analisada pelo questionário 36- Item Short Form Survey (SF-36). Para as análises estatísticas foram utilizados os testes de normalidade de Shapiro-Wilk e o teste de Dixon paraoutliers, posteriormente os testes de Willcoxon através do software Statistica® 8.0 (STATSOFT). Os aspectos da qualidade de vida melhoraram (p≤0,05) em todos os grupos de intervenção, dando ênfase na associação entre auriculoterapia e exercício físicoresistido que teve impacto em todos os componentes. A aplicação dos tratamentos de auriculoterapia e exercício físico resistido em pacientes em hemodiálise serviram como ferramentas para o aumento da percepção de qualidade de vida, sendo alternativas complementares ao tratamento convencional e conservador.
Propuesta metodológica de aprendizaje autónomo para la operacionalización de variables en investigaciones universitarias
Authors: Soto Abanto Segundo Eloy , Baldárrago Baldárrago Jorge Luis Anibal
Published: December 2023

Propuesta metodológica de aprendizaje autónomo para la operacionalización de variables en investigaciones universitarias
Assessment center y gestión de recursos humanos. Modelo para mejorar de rendimiento laboral
Authors: Azang Huaman Pompilio , Sánchez Sánchez Margoth , Ruiz Correa Sandra , Olivas Salazar Hugo , Flores-Tananta César Augusto
Published: December 2023

El presente libro es el resultado de una investigación cuyo objetivo fue la creación de un modelo de gestión de recursos humanos basado en assessment center para mejorar el rendimiento laboral de los trabajadores en la municipalidad distrital de Shanao. Para llevar a cabo esta investigación, se utilizó un diseño descriptivo propositivo con una muestra de trabajadores. Se utilizó un cuestionario como instrumento de recolección de datos y el enfoque de la investigación fue cuantitativo con un nivel correlacional de corte transversal. Los hallazgos de la investigación mostraron que el nivel de rendimiento laboral en la municipalidad distrital de Shanao es alto en lo que respecta al cumplimiento de las tareas individuales. Sin embargo, en cuanto al comportamiento de los trabajadores, el nivel es medio. Además, considerando las características y actitudes personales, los resultados demostraron que el nivel de rendimiento laboral es alto.
A Legal Study on Wartime Legislation and War Preparedness
Authors:   National Public Law Review, Kim Kwonil
Published: December 2023

War and law have been primarily a concern of international law, but sustained North Korean provocations, the war between Russia and Ukraine, and the war between Israel and Hamas have made it necessary to have domestic public law concerns as well. In times of war, wartime readiness legislation, which has a significant impact on the rights and obligations of citizens, is still incomplete in many areas.
This study analyzes the issues of improving wartime readiness legislation through wartime legislation such as emergency orders at the time of the Korean War, and attempts to derive suggestions for legal readiness to protect the lives and property of the people.
Although many of the same provisions as the emergency order at the time of the Korean War have been established in current legislation, it is preferable to prescribe in advance the contents currently required rather than creating numerous emergency orders.
However, the executive branch has prepared the draft War Standby Law and the draft Emergency Order, which are not less problematic from the standpoint of democracy. Either they should be administered by Congress rather than the executive branch, or if their contents are absolutely necessary, they should be enacted by law in advance for the predictability of the public and the public officials concerned.
For the response to war, the content needs to take effect at the time war is imminent, not after it has occurred, but it is necessary to conceptualize the point in time for such a response. In addition, legal issues in economic and scientific and technological responses tailored to modern warfare should continue to be considered.
Taking these matters into account in preparing for war would go a long way toward protecting the lives and property of the people and safeguarding the nation's existence in a wartime situation.
A Study on the Profit of Claims on Teacher Appeal
Authors:   National Public Law Review, Cheong Saeon
Published: December 2023

Under the Teacher Status Act, the teacher appeal review system is a special legal system that can function very importantly as a pre-trial remedy for teachers' educational activities and illegal infringement of rights and interests. In order for the Faculty Appeal Review Committee to fulfill its legal and institutional functions, it is natural that teachers must have high reliability and utilization of the system. However, if teachers are not aware of the necessity of such a system, and they become distrustful, there will be no purpose for the system to exist. Therefore, in order to enhance the necessity and function of the teacher appeal review system, the general reason for existence of the system, the benefits of claims in administrative trials, administrative litigation, and constitutional complaints were reviewed, and the hearing, scope, and deliberation laws of the teacher appeal review committee were briefly reviewed. In particular, the expansion of the subjectivity of the teacher appeal is very consistent with the purpose of the existence of the teacher appeal system, the protection of teachers' educational activities, and the protection of teaching rights. Next, the Teachers' Appeal Review Committee plans to expand the scope of the claimed profits. Given that the disposition, which is the subject of administrative disputes, is expanding to general dispositions and that the subject is gradually expanding, it is necessary to expand the eligibility of claimants and claim profits to aspects of economic interests, not just power alone and power factual actions. The third is the expansion of the legal principles for hearing. In other words, it is a plan to expand the legal principles for reviewing discretionary power at the Faculty Appeal Review Committee. If the scope of the recognition of discretion is expanded beyond the logic of simple discretionary rights and the law on the deviation and abuse of discretionary power can be applied, the purpose of the existence of the teacher appeal review system can be greatly improved. In other words, I think that it will be a very useful and convenient relief system for teachers even if the target of teacher appeal is expanded.
TEHNIČKO REŠENJE VISOKONAPONSKIH I SREDNJENAPONSKIH POSTROJENJA NOVOG BLOKA KOSTOLAC B3, 350 MW
Authors: Dugić Đorđe , Stevanović Nenad , Zelenović Lazar ,   ENERGOPROJEKT - ENTEL BEOGRAD, Branisavljević Predrag ,   ENERGOPROJEKT - ENTEL BEOGRAD, Kandić Miloš ,   ENERGOPROJEKT - ENTEL BEOGRAD
Published: December 2023

Unit ̋Kostolac B3 ̋ under construction, with a power of 350 MW, is connected to the 400 kV busbar of the switchyard ̋Drmno ̋. Units B1 and B2 are connected to the same busbars. The unit consumption is powered by 6 kV unit auxiliary switchgear and common switchgear. The energy required for the unit start is provided from the 110 kV network, or from the 400 kV network. Synchronization of the unit with the network is achieved at 22 kV voltage, if necessary, also at 400 kV voltage.
MEHANIČKI PRORAČUN FLEKSIBILNIH PROVODNIKA UZ UVAŽAVANJE KONCENTRISANIH I RASPODELJENIH OPTEREĆENJA UNUTAR RASPONA
Authors:   HIGH VOLTAGE SUBSTATION SUPERVISION  BEOGRAD, Serbia, Crnjin Radivoje
Published: December 2023

Mechanical calculation of conductors made of aluminum steel and other ropes, establishes a connection between the temperature of the conductor, the characteristics of the ropes and the tension force, i.e. the tension stress of the conductor. It is assumed that the conductor is homogeneous along its entire length, that it has the shape of a thread, that is, that the other two dimensions of the conductor are 'negligible' in relation to the length. When deriving the chain chain and its simplified form in the form of a mathematical parabola, it is assumed that the weight of the ropes per unit length is constant. The designers ignore the fact that this is not even close to the case. The horizontal and vertical forces that exist in the spans between the portals significantly change the value of the specific weight of the rope that is used in the calculation. The paper shows the influence of vertical forces that act in addition to the weight of the conductor and determines their influence.
ANALIZA STANJA ELEMENATA PRENOSNE MREŽE PO OSNOVU PROBLEMATIKE UVEĆANIH VREDNOSTI STRUJA KRATKIH SPOJEVA I NJIHOV UTICAJ NA OPREMU U POTROJENJIMA
Authors:   ELEKTROMREŽA SRBIJE AD, Stojanović Željko , Jovanović Milan ,   ELEKTROMREŽA SRBIJE AD, Radovanov Asen ,   ELEKTROMREŽA SRBIJE AD
Published: December 2023

The task of the analysis in question is to look at the problem and show what impact the new switching conditions in the operation of individual transformer stations have on the energy equipment in transformer stations and transmission lines. Examples that have been done include impacting: High power circuit breakers: This analysis is based on guaranteed values by the circuit breaker manufacturer. The dependence of the sum of the number of permitted interruptions n on the interruption current i is shown. On the basis of which calculations were made, from which it is clearly seen that a lower breaking current extends the lifetime of the switch. The contacts themselves cannot be replaced as they are not supplied separately by the manufacturers. The position of the contacts in millimeters is important to the operation of the circuit breaker, so it is clear that replacing them in the field can compromise the clearance and the possibility of re-arcing. All these facts lead to the conclusion that the service life of the switch is directly related to the values of the short circuit current. Substation earthing network: The impact of short-circuit currents on the plant's earthing system through the thermal impulse parameters and the cross-sectional area of the earthing and earthing conductors and the values of touch and step voltages in the plant. TS Beograd 5 stands out as a representative example of this influence with a grid network for grounding made of copper conductors. Comparative analysis of the impact of short-circuit currents on the touch voltage according to TP23, according to the standard IEEE Std 80-2000 and the standard IS-EMS 123:2018 for the current state, which was carried out in the Analysis Sector. states of transmission system elements.
ENERGETSKI PRETVARAČI ZA PRIKUPLJANJE ENERGIJE IZ MEHANIČKIH VIBRACIONIH STRUKTURA
Authors:   University of Belgrade, Institute ", Despotović Željko ,   Mihajlo Pupin",   , Serbia
Published: December 2023

The paper provides an overview of existing topologies of power converters for harvesting and converting energy from mechanical vibration structures into electrical energy. In industry, traffic (road and railway), but also in everyday life, there are numerous sources of mechanical vibrations from which it is possible to harvesting energy, convert it into electrical and, as such, accumulate it in a suitable energy storage. The paper presents the source of mechanical vibrations and the corresponding power converters, as well as their energy level. The paper presents the concrete topology of the power converter adapted to the piezo- generator PZT mechanical vibration converter. In addition, in the paper the experimental results are given. At the end of the paper, directions for the further development of vibration harvesters in this area and corresponding conclusions are given.
VISOKONAPONSKI IZVOR NAPAJANJA ZA KORONA POLARIZACIJU TANKIH PVDF FILMOVA
Authors:   University of Belgrade, Institute ", Despotović Željko V. ,   Mihajlo Pupin",   , Serbia, Vijatović Petrović Mirjana ,   UNIVERSITY OF BELGRADE, INSTITUTE FOR MULTIDISCIPLINARY  RESEARCH, Serbia, Bobić Jelena D. ,   UNIVERSITY OF BELGRADE, INSTITUTE FOR MULTIDISCIPLINARY  RESEARCH, Serbia
Published: December 2023

The paper presents a high-voltage system for polarization ultra-thin films of polyvinylidene fluoride (PVDF) by means of a high-voltage corona. PVDF is a polymer with unique characteristics, such as piezoelectric and ferroelectric. The perspective of application of these films is in systems for energy harvesting from mechanical vibrating structures that generate a wide frequency spectrum of vibrations. A very important procedure that ensures the functionality of the produced PVDF thin films is high-voltage domain polarization (so-called “poling”). Here, the quality and precision of the high voltage generated from the high voltage power converter are very important from the aspect of the polarization quality of the PVDF samples. The paper presents a concretely implemented high-voltage AC/DC power converter 230 V, 50Hz/0-5 kVdc, with a maximum output power of 50 W, which fully meets the technical requirements of PVDF sample polarization.
DIZAJN I MODELOVANJE NAPAJANJA ZASNOVANOG NA SEPIC TOPOLOGIJI
Authors:   University of Belgrade, School of Electrical Engineering, Serbia, Bakić Filip , Lukić Emilija ,   University of Belgrade, School of Electrical Engineering, Serbia, Gligorijević Mila ,   University of Belgrade, School of Electrical Engineering, Serbia, Plavšić Jovana ,   University of Belgrade, School of Electrical Engineering, Serbia
Published: December 2023

A DC/DC switching power supply are gaining popularity because of its abillity to produce and maintain low ripple output voltage. SEPIC (Single-Ended Primary Inductance Converter) is a converter topology which contains four reactive and two switching elements in the circuit. Selection of these elements is a key element of an efficient and compact design od the power supply converter. Main advantage of the chosen toplogy is a non-inverted output voltage that can be lower or higher than the input voltage. Meaning the converter’s topology has both buck and boost features that correspond with power supply requests for a constant voltage output with a wide range of input voltage values. Dynamic model with state-space averaging technique enables a more simple and faster analysis than the other models of the switching converter. Therefore, state-space averaging will be used. In this paper, basic principles of SEPIC toplogy will be shown. Further, hardware design, representation of a dynamic model of a converter and results of the simulation as a verification of the presented theory will be featured.
KASKADNA REALIZACIJA KONTROLNOG ALGORITMA MONOFAZNOG NAPONSKI KONTROLISANOG IZVORA
Authors:   University of Belgrade, School of Electrical Engineering, Serbia, Savanović Luka , Popović Miroslav ,   University of Belgrade, School of Electrical Engineering, Serbia, Bižić Dušan ,   University of Belgrade, School of Electrical Engineering, Serbia, Milić Aleksandar ,   University of Belgrade, School of Electrical Engineering, Serbia
Published: December 2023

Greater prevalence of distributed renewable sources and energy storage systems in the modern power system leads to new problems that need to be solved in order to preserve its stability. The controllability of the converter makes it possible to suppress disturbances that occur during the connection and operation of power electronics devices on the power system in real time and in an adequate way. The paper presents a proposal for the cascade implementation of the control algorithm of a single-phase voltage- controlled source for use in low-power applications. The system analyzed in the paper consists of a rectifier stage, a stage with galvanic isolation realized in the form of a resonant converter and an inverter stage. The control algorithm of the rectifier stage consists of a fast inner current and a slow outer voltage control loop. The control of the inverter stage is based on the formation of the output voltage of the appropriate frequency and amplitude. The performance obtained in the simulations was verified experimentally on the prototype of a single-phase Solid state transformer. At the end, suggestions are given for further improvement of the control system from the aspect of stability and performance.
The Influence of Current Ratio (CR), Return of Assets (ROA), Company Size and Sales Growth on Capital Structure in Companies Registered on JII for the 2015-2021 Period
Authors: Chairunnisa Dewi Sheila , Elwisam  , Digdowiseiso Kumba
Published: December 2023

This study aims to analyze the effect of the Current Ratio (CR), Return Of Assets (ROA), Company Size (size) and Sales Growth (Growth) on the Capital Structure of companies listed on JII for the 2015-2021 period. The sample in this study were 10 companies. The data used in this study comes from secondary data obtained from the company's financial statements. Related to data analysis, this study uses linear regression analysis of panel data with the Random Effect Model (REM) model. It is known that the results obtained in this study are Current Ratio (CR) having a negative and significant effect on capital structure by proxies Debt to Equity Ratio (DER), Return Of Assets (ROA), and Firm Size having a positive and significant effect on capital structure by Debt to Equity Ratio (DER) proxy and Sales Growth has no effect on capital structure. Therefore, companies can increase their Current Ratio (CR), Return Of Assets (ROA), and Company Size so that the company's capital structure can be used optimally and efficiently.