bluuebunny/crossref_metadata_2025 huggingface dataset:
Uso de internet y satisfacción de estudiantes universitarios: análisis desde las tecnologías de la información y las comunicaciones
Authors: Castillo-Altamirano Jimmy Arturo , Gutiérrez Oblitas Adriana Isabel , Barrantes Martínez Armando Martín
Published: August 2024

Objetivo: Determinar la relación entre el uso de internet y la satisfacción de los estudiantes de la Facultad de Ingeniería Electrónica y Eléctrica (FIEE) de la Universidad Nacional Mayor de San Marcos, desde el enfoque de las tecnologías de la información y la comunicación (TIC). Métodos: El estudio fue de alcance correlacional y diseño no experimental, empleó dos instrumentos válidos y confiables aplicados a una muestra de 153 estudiantes universitarios. Se realizaron estadígrafos descriptivos e inferenciales para la contrastación de hipótesis mediante el Rho de Spearman. Resultados: A nivel descriptivo, la mayor frecuencia se observó en un uso moderado de internet y una satisfacción baja. A nivel inferencial, existe una relación estadísticamente significativa entre el uso de internet y todas las dimensiones de la satisfacción: satisfacción con la docencia (p = 0.002), satisfacción con los servicios institucionales (p = 0.003) y satisfacción con la infraestructura educativa (p = 0.001). Conclusión: El uso de internet revela una relación estadísticamente significativa, fuerte y positiva con la satisfacción de los estudiantes de la FIEE. Los responsables de la toma de decisiones en la educación superior deben considerar evidencia científica para la implementación de políticas y estrategias asociadas a buenas prácticas desde el enfoque de las TIC.
Tasa de referencia y su incidencia en la inflación, tasa de interés y tipo de cambio bajo un contexto global
Authors: Gomero Gonzales Nicko Alberto , Oviedo Velásquez Pablo Raúl
Published: August 2024

Objetivo: Demonstrar o impacto da taxa de referência sobre a inflação, a taxa de juro e a taxa de câmbio. Métodos: A abordagem foi quantitativa e explicativa. Foram utilizadas informações de fontes oficiais como o Banco Central de Reserva do Peru (BCRP), a Reserva Federal (FED) e o Banco Mundial. Para cada teste, foi utilizado o EViews 10 e foram formuladas as respectivas hipóteses. Resultados: Foi encontrada uma relação inversa e altamente significativa entre a taxa de referência do Fed e a inflação dos EUA, que não está presente na economia peruana, onde a incidência entre ambas as variáveis é inversa, mas insignificante. Da mesma forma, demonstrou-se que a taxa de referência gerida pelo BCRP é influenciada pela taxa do FED, o que indica que estas medidas são procedimentos típicos para combater a volatilidade dos preços e manter a estabilidade do mercado cambial devido ao nível de dolarização da economia. O custo financeiro das grandes empresas mostrou-se sensível às taxas de juros fixadas pelos Bancos Centrais. Conclusão: A taxa referencial é um instrumento de estabilização de preços na economia e gera influência sobre os custos financeiros das empresas.
Ideal-realism as religious ontology in B. P. Vysheslavtsev’s philosophy of religion
Authors: Grishina Elena
Published: August 2024

The article considers the type of philosophical constructions of B. P. Vysheslavtsev from the point of view of the correlation between the categories of ideal and real. Agreeing with Plotinus and putting forward the three-stage ontological model as a universal and the most complete one (in contrast to the transcendentalist and positivist ones), he unites all forms of human activity into the cultural activity-creative cosmos, within which, in his opinion, the synthesis of the ideal and the real takes place, as well as the realisation of the highest spiritual goal - cognition and experience of the transcendent Absolute. In the context of foreign and domestic philosophical discussions of the first half of the 20th century, Fichte-s practical philosophy becomes relevant, which lays down a new type of idealism centred on the real as the realm of empirical experience in its concrete unitary forms. Spiritual being (the totality of embodied meanings, goals and values), which is based not on abstract principles, but on the dynamics of absolute-like self, its continuous transcendence, is a harmonious conjugation of opposite beginnings, and thanks to this philosophy goes beyond the limits of philosophical discourse proper and becomes the philosophy of life, existentialism. The article proposes the division of ideal-realist philosophy into two types. Religious-philosophical realism (ideal-realism with a three-stage ontological model), to which B. P. Vysheslavtsev adheres, forms a new idea of reality as «belonging to the Absolute». The theme of the «middle» is one of the ideal-realistic motifs. This is the theme of combining two original, i.e. ontologically different and different quality (and, therefore, antinomic) principles - the ideal and the real, and the philosophical systems associated with these principles (dogmatic idealism and dogmatic idealism) into a kind of dualistic unity pointing to the Absolute, its transcendental-immanent position and special meta-manifestation in the world. Accessible to rational knowledge and formal-logical speculative analysis in the form of the law of the unity of opposites, B. P. Vysheslavtsev insists that the very source of this law has neither unity nor opposites, but is the center of divine secrets, the living harmonious self, which «holds» this unity.
A Reversible Etiology of Progressive Motor Decline in a Previously Healthy Child
Authors: Eliav Tal , Kuruppu Deandra , Sanchez-Lara Pedro A , Grand Katheryn , Schweiger Bahareh , Allen-Sharpley Michelle
Published: August 2024

We describe the clinical presentation and evaluation of a 10-year-old boy who presented to our medical center with years of progressive proximal muscle weakness, muscle atrophy, and weight loss. In addition to a myopathic phenotype, he was found to have tachycardia, tremor, and learning difficulties. Electromyography revealed chronic myopathic changes and laboratory screening was notable for undetectable thyroid stimulating hormone. Follow-up testing revealed elevated thyroid peroxidase antibodies and thyroid stimulating immunoglobulins. Ultrasound examination revealed an enlarged heterogeneous thyroid gland. Four weeks after treatment with atenolol and methimazole, his strength and cognition began to improve. This case highlights the importance of evaluating for potentially reversible toxic-metabolic etiologies in children presenting with any progressive neurologic symptoms.
Failure to Thrive, Metabolic Acidosis, and Diarrhea in a 7-Week-Old Infant
Authors: Lawson Nikki R. , Angelo Joseph , Chiou Eric , Glinton Kevin , Dean Andrea
Published: August 2024

A 7-week-old infant presented to the emergency department with fussiness, decreased oral intake, loose stool, and respiratory distress for 2 days. The patient was born full-term with an uncomplicated birth history but had a history of slow weight gain. He was alert, but toxic-appearing at presentation, hypothermic with signs of dehydration, and with respiratory failure. He was found to have severe anion gap metabolic acidosis, hypokalemia, elevated lactate, and hyperammonemia. He responded well to initial resuscitation and was admitted to the ICU for intravenous electrolyte replacement, bowel rest, and respiratory support. A workup was pursued for failure to thrive with severe malnutrition, hyperammonemia, hyperlactatemia, anemia, vitamin D deficiency, and electrolyte abnormalities. After stabilization, he was restarted on enteral feeds and had a recurrence of loose stool and severe electrolyte abnormalities, which were refractory to enteral supplementations and required readmission to the ICU. His hospital course extended several weeks, included several subspecialty consultations, and ended with a surprising diagnosis of exclusion based on his clinical response to therapy.
Global Management of Serious Bacterial Infections in Young Infants Aged 0 to 59 Days: An Overview of Systematic Reviews
Authors: Edmond Karen M. , Whisson Georgia R. , Swe Derek C. , Strobel Natalie A.
Published: August 2024

BACKGROUND

To inform World Health Organization guidelines for the management of serious bacterial infection (SBI) (suspected or confirmed sepsis, pneumonia, or meningitis) in infants aged 0–59 days.

OBJECTIVE

To conduct an “overview of systematic reviews” to: (1) understand which systematic reviews have examined diagnosis and management of SBI in infants aged 0–59 days in the last 5 years; and (2) assess if the reviews examined PICOs (population, intervention, comparator, outcomes) and regimens currently being recommended in low and middle income countries (LMICs) by the World Health Organization.

DATA SOURCES

MEDLINE; Embase; Cochrane Library; Epistemonikos; PROSPERO.

STUDY SELECTION

Systematic reviews of randomized controlled trials or observational studies of infants aged 0–59 days examining diagnostic accuracy and antibiotic regimens for SBI from January 1, 2018 to November 3, 2023.

DATA EXTRACTION

Dual independent extraction of study characteristics, PICOs, and methodological quality.

RESULTS

Nine systematic reviews met our criteria. Two reviews examined diagnostic accuracy for sepsis, and no reviews examined pneumonia or meningitis. Five reviews examined antibiotic effectiveness (sepsis [n = 4]; pneumonia [n = 1]), and no reviews examined meningitis. One review examined antibiotic duration for sepsis and one for meningitis, and no reviews for pneumonia. Only 4 of the 9 systematic reviews met criteria for high-quality.

LIMITATIONS

Our review was limited to the last 5 years to inform current guideline updates.

CONCLUSIONS

Few studies have examined antibiotic regimens currently being used in LMICs and quality is of concern in many studies. More high-quality data are needed to inform management of SBI in newborns, especially in LMICs.
Efficacy of Antibiotic Regimens for Pneumonia in Young Infants Aged 0–59 Days: A Systematic Review
Authors: North Krysten , Frade Garcia Alejandro , Crouch Mark , Kimsen Spencer , Hoey Amber , Wade Carrie , Kim Yumin , Chou Roger , Edmond Karen M. , Lee Anne C.C. , Rees Chris A.
Published: August 2024

CONTEXT

Pneumonia is a leading cause of death in young infants.

OBJECTIVES

To evaluate the efficacy of different antibiotic regimens to treat young infant pneumonia on critical clinical outcomes.

DATA SOURCES

MEDLINE, Embase, CINAHL, World Health Organization (WHO) Global Index Medicus, Cochrane Central Registry of Trials.

STUDY SELECTION

We included randomized controlled trials of young infants aged 0 to 59 days with pneumonia (population) comparing the efficacy of antibiotic regimens (intervention) with alternate regimens or management (control) on clinical outcomes.

DATA EXTRACTION

We extracted data and assessed risk of bias in duplicate. We used Grading of Recommendations, Assessment, Development, and Evaluation to assess certainty of evidence.

LIMITATIONS

Trials were heterogeneous, which precluded data pooling.

RESULTS

Of 2601 publications screened, 10 randomized controlled trials were included. Seven trials were hospital-based (n = 869) and 3 were nonhospital-based (n = 4329). No hospital-based trials evaluated WHO-recommended first-choice regimens. One trial found the WHO-recommended second-choice antibiotic, cefotaxime, to have similar rates of treatment success as non-WHO-recommended regimens of either amoxicillin–clavulanate (RR 0.99, 95% confidence interval 0.82–1.10) or amoxicillin–clavulanate/cefotaxime (RR 1.02, 95% confidence interval 0.86–1.12). Among 3 nonhospital-based trials comparing oral amoxicillin to alternate regimens to treat isolated tachypnea among infants aged 7–59 days, there were no differences in treatment failure between amoxicillin and alternate regimens. Certainty of evidence was low or very low for all primary outcomes.

CONCLUSIONS

We found limited evidence to support the superiority of any single antibiotic regimen over alternate regimens to treat young infant pneumonia.
Lymphadenopathy: Differential Diagnosis and Indications for Evaluation
Authors: Stanford Emily F. , Levine Hannah M. , Cabana Michael D. , Anosike Brenda I.
Published: August 2024

Lymphadenopathy is a common finding on physical examination in the pediatric population. Although it is often physiologic, lymphadenopathy can also be associated with more serious illnesses and has many possible etiologies. A broad differential diagnosis can be narrowed with a thorough clinical history, physical examination, laboratory studies, and imaging. The goal of this review is to provide a framework for understanding normal physiology, identify when enlarged lymph nodes may be associated with pathology, develop differential diagnoses associated with lymphadenopathy, and apply a systematic approach for diagnostics and appropriate management, with a focus on findings concerning for malignancy and the initial evaluation.
q− DIFFERENTIAL OPERATORS AND DERIVATIONS ON THE QUADRATIC RELATIVISTC INVARIANT ALGEBRAS
Authors: Jaramillo-Quiceno Julio C.
Published: August 2024

This study aims to develop a new algebra based on the Minkowskian product or relativistic Lorentz invariants. This leads to the notion of q- invariant algebras, defining q- deformed quadratic relativistic algebras and establishing some q- differential operators and derivations. Then, from these algebras, we define the q- relativistic invariant function on a free algebra k⟨x, y, z, u⟩ with the objective of formulating the q- differential quadratic operators. On the other hand, we define the q- quadratic differential operators on the Clifford algebra Cl0,n. We consider the case of a polynomial function in the noncommutative quadratic variables x2, y2, z2 and u2, obtaining the q- differential quadratic operators for these functions with their respective properties. Furthermore, we formulate the q- quadratic Dirac differential operators. On the other hand, on the algebra Ψ with the generators x, y, we have proposed the extended derivation with its corresponding properties, in order to apply it to the q- relativistic invariant algebras and make a relationship with the q- Dirac quadratic operators. On a function of non-commutative quadratic variables, we define the q- quadratic differentiation operators Dq2 with their properties, and finally some applications for further work.
Sostenibilidad de comunidades energéticas: Propuestas de gestión y evaluación de proyectos comunitarios de energías renovables para Isla Fuerte, Bolívar.
Authors: Calle Rodríguez Juan Pedro , Ibarra Chaves Daniela , Younes Velosa Camilo
Published: August 2024

El presente artículo aborda la importancia de las energías renovables en el desarrollo de comunidades energéticas sostenibles y participativas. Se presenta un estudio realizado en Isla Fuerte, Bolívar (Colombia), donde se diseñó un portafolio de proyectos productivos basados en energías renovables, mediante la metodología de Design Thinking en laboratorios de cocreación. Se diseñaron cuatro proyectos viables que satisfacerán las necesidades identificadas por la comunidad. Los laboratorios de cocreación se identificaron como espacios enriquecedores y productivos, permitiendo a la comunidad idear soluciones para sus problemáticas. Se destaca la importancia de identificar actores potenciales y establecer responsables para la ejecución de los proyectos. Esto brinda claridad en la ruta de acción y facilita la continuidad de los proyectos del portafolio creado. Asimismo, se propone una guía de gestión comunitaria que busca ser replicable en futuros proyectos, estableciendo factores preliminares para su desarrollo y sostenibilidad a largo plazo. Finalmente, se enfatiza en la relevancia de involucrar activamente a la comunidad en la implementación de los proyectos en sus territorios, debido a que su participación constante es fundamental para la viabilidad y sostenibilidad de las acciones desarrolladas. Se llega a la conclusión de que los proyectos basados en energías renovables pueden satisfacer las necesidades de las comunidades. Los enfoques participativos, como los laboratorios de cocreación y la gestión comunitaria, junto con la identificación de actores y la evaluación constante, son elementos claves para el éxito y la sostenibilidad de las comunidades energéticas. El estudio resalta la importancia de poner a la comunidad en el centro de los proyectos y establecer alianzas sólidas para un desarrollo energético sostenible.
Modelado en el dominio de la frecuencia de un variador trifásico de velocidad conectado a un motor a partir de un método de ajuste basado en medidas de corriente y tensión
Authors: Mateus Quintero Elkin Julián , Cala Balaguera William Danilo , Malagón Carvajal Gabriel Alexis , Duarte César Antonio , Ordoñez Plata Gabriel
Published: August 2024

This paper assess the performance of a model fitting method in the frequency domain from v ñoltage and current measurements. This method is presented as an option for modeling in the frequency domain and the subsequent estimation of the current distortion caused by a group of non-linear loads,compared to complex models in the time domain. In this way, it may be possible to implement distortion evaluation scenarios in MCCs (Motor ControlCenters) with a lower computational cost than a time domain simulation.
Comparison of different geometry trees in fire simulation
Authors: Hajdu Flóra , Hajdu Csaba , Környei László , Beke Dóra , Kuti Rajmund
Published: August 2024

Wildfire simulations can help to better understand the dynamics and effects of forest fires. The basis of wildfire simulation is the tree-burning simulation. In this paper, the fire simulation of 7 different geometry Hungarian trees in the case of arson is presented. It was observed that the trees were burned down fast. The maximum mass loss rate and maximum heat release rate were larger as the tree was larger. The largest intensity fire could be observed in the case of the smallest tree. The maximum temperature was higher in the case of a large crown diameter. The maximum aerosol reached high pollutant concentrations. In the case of large crown height, the maximum CO2 concentration was higher. The results presented in this paper can be the basis of the following forest fire simulations.
Wyniki badań archeologicznych na wielokulturowym stanowisku 22 w Trepczy, pow. sanocki
Authors: Bulas Jan ,   Fundacja Arch, Kotowicz Piotr ,   Muzeum Historyczne w Sanoku
Published: August 2024

This article presents the results of the first research excavation carried out at the multicultural site No. 22 in Trepcza. The aim of the fieldwork was to verify the hypothesis of the presence of a necropolis dating back to the Early Middle Ages in this location. As a result of the excavations, the hypothesis of the site from this period was not positively verified, however some finds dating back to the Bronze Age, the Early Iron Age, as well as features and materials related to the Przeworsk culture from the Early and Younger Roman period were discovered at the discussed place. Among the recorded features, there was a relic of an object embedded in the ground, resembling a sunken-floored or semi-sunken-floored dwelling.
O mało znanym sposobie popularyzacji zabytków archeologicznych w czasach PRL-u
Authors: Kłosińska Elżbieta Małgorzata ,   Instytut Archeologii UMCS
Published: August 2024

During the PRL period, craftsmen and artists from cooperative companies producing household items (e.g., from the Rzut Cooperative in Toruń) created a collection of replicas of ceramics, mainly from the Lusatian culture, in response to the growing interest in archaeological research (e.g., in Biskupin). This pottery collection enjoyed great popularity and contributed to the popularization of archaeology in Polish society.
Матеріали тшинецького культурного кола з поселення Рованці – Гнідавська Гірка на Волині
Authors: Бардецький Андрій Б. ,   Міжрегіональна громадська наукова організація «Дубенський археологічний осередок»
Published: August 2024

The article publishes the materials of the Trzciniec cultural circle (TCC) from the excavations of the multi-layered settlement Rovantsi-Hnidavska Hirka in Volyn. Today, this monument is completely built up with numerous violations of monument protection laws and has already been lost to science. The materials were obtained from rescue excavations in 2009–2010, conducted by the author. In the excavations, four TCC objects were discovered: three pits and the remains of a clay oven, the base of which is paved with fragments of pottery. The pottery from the objects has features different from the pottery of the classical horizon of the TCC in Volyn, which is represented, for example, in ash mounds near the town of Netishyn. It is also different from the ceramics of monuments such as Dubno-Dubovets and Tarakaniv-5, which represent the final horizon of the TCC in Volyn. Сomplex of the Hnidavska Hirka reveals features that are late in relation to the classical ones, so it can be considered as intermediate between the classical and final horizons. On the basis of a comparison with the dating of other monuments, consider the dating of the middle of the 15 th –14 th centuries BC the most suitable for our site in Rovantsi. Clay ovens, similar to the one found, have analogues in other TCC settlements, but they are poorly documented in Volyn.
Cascade Classifier for the Detection and Identification of Birds in a Videostream
Authors: Vlasov Evgeny , Krasnenko Nikolay
Published: August 2024

A method and a prototype of the program for detecting the presence of birds in the video data flow in real time are presented in the paper. The method is based on the cascade classifier solving the problem of bird detection and identification with the use of a bioacoustic bird scaring system deployed at the Tomsk airport. In our research, the Viola-Jones cascade classifier representing one of the implementations of the Haar cascade algorithm has been used. This algorithm allows objects to be detected in images and videos with high accuracy and rate. In this case, the classifier was leaned on the data set containing images of birds that allowed us to reach high accuracy of bird detection and identification in the videos. The possibilities of the developed classifier are also estimated, and its high productivity is shown. In this study, various methods of machine learning and video data analysis are used to obtain exact and reliable results. As a whole, the present work is an innovative approach to a solution to the urgent problem of airport protection from birds. The application of the developed method has allowed the operating efficiency of the bioacoustic bird scaring system to be increased together with the safety of flights at the Tomsk airport, thereby decreasing the probability of airplane collisions with birds. The novelty of the work consists of the application of the Viola–Jones method for solving the problem of bird detection and identification and estimating its efficiency. Thus, this work is an important contribution to the development of methods for detecting and identifying objects in videos and can also be used in other fields of science and technology in which the automatic detection and classification of objects in the video data flow is required.
Algorithms for the Primary Analysis of Local Fluorescence Objects in the DNA Sequencer «Nanofor SPS»
Authors: Manoilov Vladimir , Borodinov Andrew , Zarutsky Igor , Petrov Alexander , Saraev Alexey , Kurochkin Vladimir
Published: August 2024

The DNA sequencer "Nanofor SPS", developed at the Institute of Analytical Instrumentation of the Russian Academy of Sciences, implements a method for massively parallel sequencing to decrypt the sequence of nucleic acids. This method allows for the determination of the nucleotide sequence in DNA or RNA, containing from several hundred to hundreds of millions of bases. Thus, there is the opportunity to obtain detailed information about the genome of various biological entities, including humans, animals, and plants. A crucial part of this device is the software, without which it is impossible to solve genome decoding tasks. The output data of optical detection in the sequencer are a set of images over four channels, corresponding to nucleotide types: A, C, G, T. Through specialized software, the position of molecular clusters and their intensity characteristics, along with parameters of the surrounding background, are determined. Algorithms and programs for processing fluorescence signals, discussed in the paper, were developed during the creation of the device software. Also, to debug and test the working programs, models of image construction similar to real data obtained in the course of sequencer operation were created. These models made it possible to obtain a significant amount of information without running expensive experiments. Significant progress has been made in the field of machine learning in recent years, including in the field of bioinformatics, leading to the implementation of the most common models and their potential for practical tasks. However, while these methods have amply proven their worth in secondary bioinformatics data analysis, their potential for the primary analysis remains untapped. This paper focuses on the development and implementation of machine learning methods for primary analysis of optical images of fluorescence signals in reaction cells. The methods of clustering and their testing on models and images obtained from the device are described. The aim of this paper is to demonstrate the capabilities of algorithms for primary analysis of fluorescence signals that arise during sequencing in the «Nanofor SPS» device. The paper describes the main tasks of fluorescence signal analysis and compares traditional methods of solving them and solutions using machine learning technologies.
PHOTOV CALCULATOR - CALCULADORA DE SISTEMAS DE MICROGERAÇÃO FOTOVOLTAICA
Authors: Silva Nicacio Erikson Pedro , Santos Bezerra Maria Eduarda , Lopes Alves Dennys
Published: August 2024

Este projeto teve como objetivo geral o desenvolvimento de um software didático e executável para computadores com o sistema operacional Microsoft Windows, destinado a auxiliar discentes e profissionais iniciantes na área de energia solar fotovoltaica no dimensionamento de sistemas de microgeração fotovoltaica. Tal dimensionamento pode ser realizado com o auxílio de softwares para automatizar o processo de dimensionar os referidos sistemas. Sendo assim, vários softwares destinados ao dimensionamento fotovoltaico estão disponíveis no mercado, porém a usabilidade desses softwares pode se tornar complicada para ingressantes da área de instalações de sistemas fotovoltaicos. A proposição deste objeto de estudo decorreu do desejo de disponibilizar um software correlato a esta temática e que seja ofertado de maneira acessível. Com isso, foi empregada a linguagem computacional Python para desenvolver um software que funciona como uma calculadora fotovoltaica. Com isto, tem-se a transmissão e aplicação dos conhecimentos relacionados com o processo de dimensionamento para sistemas de microgeração fotovoltaica, composto pelo pré-dimensionamento, dimensionamento das strings, dos condutores e dos dispositivos de proteção, levando ainda em consideração o tipo de inversor usado, ou seja, se é inversor de string ou microinversor. As atividades relacionadas ao desenvolvimento deste projeto foram realizadas entre setembro de 2020 até março de 2022. Para a realização deste projeto utilizou-se como estratégia metodológica a consulta teórica em materiais impressos e digitais acerca da tecnologia fotovoltaica e da linguagem computacional Python. Logo, foi desenvolvido um software didático com interface gráfica intuitiva e autoexplicativa, abrangendo os requisitos para o dimensionamento de sistemas de microgeração fotovoltaica.
O COMÉRCIO INTERNACIONAL E A SUSTENTABILIDADE
Authors: JÉSSICA MARIA
Published: August 2024

O trabalho a seguir visa analisar as demais áreas envolvendo o comércio internacional e a sustentabilidade, de forma que viabilize o cenário mundial. Nesse âmbito, aborda a importância do desenvolvimento sustentável, buscando aliar a preservação do meio ambiente, com os interesses socioeconômicos e políticos dos países e continentes, juntamente com o Estado, sociedade civil e empresas.
DESAFIOS E PERCEPÇÕES SOBRE A UTILIZAÇÃO DE TECNOLOGIA DA INFORMAÇÃO NA ADMINISTRAÇÃO PÚBLICA SOB A ÓPTICA DE GESTORES E PROFISSIONAIS DE TI
Authors: Santos Yan Vieira dos
Published: August 2024

O presente artigo traz à tona uma revisão literária sobre a atuação da Tecnologia da Informação (TI) acerca da utilização de mecanismos tecnológicos para a melhoria de gestões públicas, que anseiam formas de modernização e eficiência, adotando modelos e ferramentas gestoras, fugindo de uma visão tradicionalista e centralizadora de operar a máquina pública, salientando os princípios que regem qualquer administração, tais como a transparência informacional. Nesse ponto, a TI amplia o leque de opções para o gestor público, permitindo a pesquisa e a utilização de abordagens mais amplas para a solução de problemas administrativos. A metodologia utilizada para esta pesquisa exploratória concebeu-se num mapeamento bibliográfico de produções científicas que abordam o tema central do artigo, usufruindo das bases de dados do Portal de Periódicos do CAPES, Academia, Web of Science, Biblioteca Digital Brasileira, Scielo e Dissertações. A pesquisa constatou uma enorme falta de integração entre informações intersetoriais, más práticas de governança, dentre outras problemáticas que a TI tem esta função de auxílio para a melhoria da prestação do serviço público.
Szlak bojowy k.u.k. Feldjägerbataillon Nr. 27 podczas I wojny światowej
Authors: Pięciak Krzysztof
Published: August 2024

Artykuł przedstawia szlak bojowy k.u.k. Feldjägerbataillon Nr. 27 – c. i k. 27. batalionu strzelców podczas I wojny światowej. W pierwszej części tekstu zestawiono, w oparciu o źródła i opracowania, informacje na temat tej jednostki. Tekst uzupełniają aneksy: szlak bojowy 27. batalionu strzelców podczas I wojny światowej, zestawiony na podstawie dokładnych zapisów w dokumentach służącego w nim Polaka, Włodzimierza Krynickiego, oraz biogram tego oficera. Tekst omawia także zagadnienia narodowościowe – skład osobowy batalionu, złożonego głównie z Ukraińców i Rumunów oraz wyjaśnia, w jakich okolicznościach jego żołnierze znaleźli się w listopadzie 1918 roku w Krakowie. Stanowi także skromy przyczynek do badania procesu rozkładu armii austro-węgierskiej pod koniec I wojny światowej.
Exploring shared frailty models for cluster-specific risk estimation: A study on diabetes patients with a history of acute coronary syndrome
Authors: Adeleke Brıght Adedayo Kazeem , Deshmukh Harshal , Rigby Alan , Sathyapalan Thozhukat , John Joseph
Published: August 2024

This study proposes the use of semiparametric log-normal shared frailty models to analyze time-to-event data for individuals with similar features referred to as clusters. Shared frailty models are useful for modeling and estimating common risk in the lifetimes of individuals in these clusters. While various methods have been proposed for estimating shared frailty models, few studies have explored the use of the pseudo-full-likelihood method. In this study, the pseudo-full-likelihood and hierarchical likelihood approaches were used to construct and estimate parameter estimates and check for asymptotic properties via simulations. Log-normal semiparametric frailty model was used to obtain cluster-specific frailty based on the semiparametric log-normal shared frailty distribution. The results of both methods were compared, and prediction intervals for a random effect were obtained. To further investigate the existence of shared frailty in diabetes patients and a history of acute coronary syndrome (STEMI and NSTEMI), data from UK Biobank was used. The results suggest the presence of frailty within the clusters and indicate cluster time dependence in the study population. Overall, this study highlights the potential benefits of using the pseudo-full-likelihood method in shared frailty modeling and provides insights into the impact of observed variabilities on hazards within clusters.
Assessment of Strategic ESG Priorities by the Republic of Korea’s International Trade SMEs Using AHP Method
Authors: Choo Shin-Myoung , Kim Hag-Min ,   Korea Association for International Commerce and Information
Published: August 2024

ESG is emerging as a new non-tariff barrier. When comparing large enterprises and small and medium-sized enterprises (SMEs), it is true that there is a significant gap in ESG response. The purpose of this study is to evaluate the strategic priorities and practical items for ESG management of SMEs. In particular, the study aimed to identify the priorities of E, S, and G as perceived by export SMEs in South Korea and to evaluate the importance and differentiation of each practical item. To this end, expert interviews and the SMART technique were used to derive detailed ESG items, and their priorities were evaluated using AHP and IPA methods. The study results showed that the strategic priorities at Level 1 were in the order of Environment, Social, and Governance. The strategic priorities for major items within ESG at Level 2 were derived as efforts for transparent management and efforts to establish an eco-friendly supply chain. Finally, the strategic necessity of internalizing the current ESG strategies, which are centered on large companies, into export SMEs and the need for government policy support to establish an eco-friendly supply chain were identified. These study results are consistent with the IPA results. This study is significant in that it derived the strategic priorities and practical items of ESG for Korean export SMEs. However, the limitation of this study is that it was confined to Korean export SMEs, and it is suggested that the scope be expanded to include large enterprises and mid-sized companies in the future.
A Study on the Sustainable Global SCM Strategies for Carbon Neutrality and Green Growth
Authors: Han Neungho , Kim Taehoo ,   Korea Association for International Commerce and Information
Published: August 2024

The issue of global warming, stemming from climate change, exerts significant ramifications worldwide and manifests in diverse extreme weather conditions and natural calamities. In response, a growing number of countries globally have been advocating for a spectrum of legal frameworks, institutional mechanisms, and supportive policies to mitigate greenhouse gas (GHG) emissions and facilitate environmental rehabilitation. Notably, the COVID-19 pandemic has exposed vulnerabilities in the global supply chain, underscoring deficiencies inherent in existing supply chain management (SCM) paradigms employed by companies.
This study explored both global and Korean government policy trajectories from the perspectives of domestic companies. For this, the study investigated the policy directions of pivotal actors such as the United States and the European Union, thereby contributing to the discourse on the reconstruction of global supply chains through a synthesis of theoretical ground and empirical case studies centered on sustainable global SCM practices. Companies are required to adeptly navigate the comprehensive landscape of climate change response policies instituted by individual nations. In turn, companies can enhance their competitive edge by fortifying and overhauling prevailing SCM infrastructures.
TO STUDY THE DYNAMICS OF A PULSE-WIDTH CONVERTER WITH AN INPUT FILTER
Authors: Andriyanov Alexey I. ,   Bryansk State Technical University
Published: August 2024

Relevance Switching voltage converters are widely used in industry, which makes the study of such devices relevant. As a rule, these systems are built with feedback on the output voltage in order to stabilize it, so at the design stage it is necessary to calculate the control system in order to ensure stability and the required dynamic characteristics. The use of an input filter as part of pulse voltage converters, on the one hand, can improve the quality of the converter input current, and on the other hand, can lead to a loss of its stability as an aggregated «input filter — converter» system. This requires the development of methods for analyzing the dynamics of such systems. The applied mathematical models and computational methods must ensure maximum calculation speed, take into account the dynamic nonlinearities of pulsed power conversion systems and the periodic nature of electromagnetic processes with a frequency equal to or a multiple of the pulse modulation frequency. In some cases, chaotic oscillations may occur. The listed features make it relevant to use the point mapping method, based on nonlinear difference equations, which makes it possible to construct stability regions of the desired dynamic regime with minimal computer time. Aim of research Construction of a nonlinear dynamic model of a push-pull zero-DC voltage converter in the form of a nonlinear discrete Poincaré map, construction of two-parameter maps of dynamic modes, frequency characteristics of the system and, on their basis, identification of the main patterns of system behavior under conditions of changes in its input voltage and load resistance in a wide range for different input parameters filter. Research methods To analyze the dynamics, the following were used: small-signal modeling, point mapping method, frequency methods of stability analysis, theory of linear automatic control systems, theory of nonlinear dynamic systems, numerical methods for solving systems of nonlinear equations. Results A nonlinear dynamic model of a push-pull DC-DC converter with an input filter in the form of a Poincaré map has been constructed, and the main patterns of loss of stability of the desired dynamic mode have been identified when the input voltage and load resistance change over a wide range. The specificity of using various methods in analyzing the stability of the system under consideration is demonstrated. It is shown that the use of the point mapping method and accompanying methods for analyzing the stability of fixed points of dynamic modes makes it possible to use a single criterion for the loss of stability of the desired dynamic mode in different areas of system parameters.
Mathematical Modeling of the Physics of Blood Flow along a Constricted Artery during Treatment of Cancer using Hyperthermia
Authors: Annord Mwapinga
Published: August 2024

A numerical investigation of a unidirectional unsteady flow of blood and heat transfer through an artery with a stenotic condition during heat therapy has been performed aiming at determining the dynamics of fluid (blood) flow and heat transfer. Blood is treated to obey the Newtonian law of viscosity. The arterial wall is considered to be rigid due to the presence of stenosis. Heat transfer has been studied under the presence of external heat source that is used to raise body temperature during treatment under hyperthermia. The formulated model equations have been solved using finite difference scheme and simulations are done using MATLAB software. Velocity and temperature profiles have been plotted subject to varying some flow parameters such as Reynolds number, Pranditl number, Eckert number and heat the source parameter. Skin friction and Nusselt number have been plotted to see their varying behavior during heat therapy. A validation of this formulation is shown by comparing the current findings with those from the existing literature.
Cryptosystem Using the Generalized Petersen Graph 𝐺𝑃 (𝟐𝑛 + 𝟏, 𝟐)
Authors: Beaula C ,   Department of Mathematics, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamilnadu, India, Venugopal P
Published: August 2024

Objective: In the digital era, data transfer in a network without external interference is one of the challenging problems. External interference can be minimized by creating a strong cryptosystem. For this purpose, different mathematical concepts are incorporated to construct a cryptosystem. Recently, techniques in graph theory, a branch of mathematics, are also employed in cryptography. The objective of this paper is to propose a new cryptosystem to encrypt and decrypt an alphabetical string of lengths less than equal to 16 using graph decomposition and edge labeling on a generalized Petersen graph. Method: The edges of the decomposed graphs of the union of the generalized Petersen graph are labelled using the technique of vertex strongly*-graph and these labels are used to encrypt and decrypt the alphabetical string. Findings: A graph is a vertex strongly*-graph if there exists a bijection such that are distinct for every vertex where are the edges incident to a vertex . The Generalized Petersen graph is proved to be a vertex strongly*-graph. Using this concept, a new cryptosystem is proposed. Novelty: The usage of the decomposition of the union of the generalized Petersen graph in the cryptosystem is the novelty of this paper. Application: To encrypt and decrypt an alphabetical string of size up to 16. Keywords: Encryption, Decryption, Generalized Petersen Graph, Edge Labeling, The Union of Graphs, Graph Decomposition.
Statistical index for the diagnosis of sarcopenia in physically active older women: A cross-sectional study
Authors:   Universidad de Antioquia, Ramirez Villada Jhon Fredy , Arango Paternina Carlos Mario ,   Universidad de Antioquia, Zea Castro José Fernando ,   Universidad del Externado, Tibaduiza Annie ,   Universidad de Antioquia
Published: August 2024

The detection and classification of sarcopenia involves the analysis of many variables (50 to 60), which increases the time and costs required to diagnose and manage this condition. The objective of the study was to develop a synthetic statistical index to diagnose and classify sarcopenia in physically active older women. With this in mind, we conducted a cross-sectional study in 100 physically active women (64.88 ±4.4 years) in whom body composition measurements, muscle strength, and gait tests were performed. One thousand random selections of both training and test sets (80% and 20%, respectively) were made, logistic regression was fitted, and the regularization procedure (Elastic net regression) was performed. Results showed that the skeletal appendicular mass index (kg/m2) and slow gait speed (m/sec) were the variables that contributed the most to the diagnosis of sarcopenia. In conclusion, appendicular lean mass, gait speed, and explosive strength sufficiently describe the state of muscle and functional deterioration (sarcopenia) in physically active older women.
OPTIMAL STABILIZATION IN DIFFERENCE EQUATIONS
Authors: Khusainov D. Ya. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Hahurin Y. R. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: August 2024

The paper deals with the problem of optimal stabilization for difference equations. The use of Lyapunov functions for optimal stabilization is discussed. The theorem of optimal stabilization is proved and the form of optimal control for the considered class of problems is determined.
Estudio de invariabilidad de marcas visuales ante cambios de iluminación
Authors: Máximo Gutiérrez Míriam , Ballesta Mónica , Valiente David , Vilella-Cantos Judith , Gil Arturo , Payá Luis
Published: August 2024

Los robots móviles tienen la capacidad de desplazarse de manera autónoma, para ello es necesario conocer su posición. Esta estimación puede ser obtenida a partir de diversos sensores. Uno de los sensores más comúnmente utilizados son los sistemas de visión por la gran cantidad de información que son capaces de capturar. Para extraer la información más relevante de las imágenes capturadas por las cámaras, se utilizan algoritmos que realizan la detección y su posterior descripción de los puntos más característicos del entorno, también conocidos como marcas visuales. Además, estas marcas visuales deben ser detectadas y descritas de manera que sean invariantes a posibles cambios del entorno. Un caso concreto de estos cambios, son los cambios en la iluminación, común en entornos interiores y exteriores. En este trabajo se ha realizado una evaluación de varios métodos clásicos y métodos que incorporan redes de aprendizaje profundo, para observar su comportamiento ante secuencias de imágenes que presentan diferentes condiciones de iluminación.
Detección de anomalías en turbinas eólicas
Authors: Marcos Quirós Diego , Gómez Silva María José , Santos Peña Matilde , López González Clara Isabel
Published: August 2024

El contexto de emergencia climática y el agotamiento de los combustibles fósiles ha llevado a organizaciones privadas y a entidades públicas a aumentar los esfuerzos en el desarrollo e investigación de fuentes de energía alternativas y limpias, entre las que destaca la energía eólica. En este artículo se propone la implementación de diferentes algoritmos de aprendizaje automático para tareas de detección de anomalías en datos de aerogeneradores. Se ha realizado una batería de experimentos con diferentes algoritmos de aprendizaje automático para realizar un análisis comparativo del rendimiento de estos métodos. El objetivo final es contribuir con herramientas computacionales a mejorar la operación y mantenimiento de las turbinas eólicas tanto terrestres como marinas.
Aprendizaje basado en proyecto para educación en automática
Authors: Manzano Crespo José María
Published: August 2024

Este artículo presenta una aplicación innovadora de aprendizaje basado en proyectos (ABP) para la asignatura Domótica en un grado en Ingeniería Mecatrónica y Robótica. El proyecto implica la automatización completa de una vivienda a lo largo del cuatrimestre, proporcionando a los estudiantes una experiencia práctica y directa. El curso se realizó fuera del campus: los estudiantes se dividieron en parejas, cada una responsable de diferentes aspectos de la domotización, incluyendo iluminación, persianas, climatización, control de acceso e integración utilizando plataformas como Home Assistant. Los resultados educativos mostraron mejoras significativas en el conocimiento técnico, el trabajo en equipo, la gestión de proyectos y la resolución de problemas. El enfoque ABP facilitó una comprensión más profunda de los conceptos teóricos mediante su aplicación práctica, promoviendo la innovación y la creatividad. La retroalimentación positiva y los altos niveles de satisfacción entre los estudiantes subrayan la efectividad de este método de enseñanza.
Estudio de vulnerabilidades en el protocolo de comunicaciones Dynamixel aplicado en plataformas robóticas
Authors: Jiménez Naharro Raúl , Garcia Jurado-Centurión Almudena , Gómez Bravo Fernando , López de Ahumada Gutiérrez Rafael
Published: August 2024

La seguridad en las plataformas robóticas es una necesidad detectada por distintas instancias de alto nivel, como el Instituto Nacional de Ciberseguridad. En este contexto, el artículo presenta un estudio sobre las vulnerabilidades de un protocolo de comunicaciones utilizado en plataformas robóticas, el protocolo Dynamixel que soporta la transmisión de comandos de control utilizada por los actuadores digitales de esta marca. Dicho estudio ha revelado que el protocolo es vulnerable frente a ataques del tipo "hombre de en medio". Con el fin de abordar el estudio de esta vulnerabilidad, se han implementado transmisores de paquetes y módulos de ataque desarrollados mediante lenguaje VHDL, para su implantación en plataformas basadas en FPGA. Seguidamente, se han puesto de manifiesto las vulnerabilidades utilizadas por el atacante para llevar a cabo tal ataque, así como posibles estrategias de defensa que pueden ser implementadas en la arquitectura de la plataforma robótica.