bluuebunny/crossref_metadata_2025 huggingface dataset:
Using Baidu Index Data to Improve Chickenpox Surveillance in Yunnan, China: Infodemiology Study (Preprint)
Authors: Wang Zhaohan , He Jun , Jin Bolin , Zhang Lizhi , Han Chenyu , Wang Meiqi , Wang Hao , An Shuqi , Zhao Meifang , Zhen Qing , Tiejun Shui , Zhang Xinyao
Published: May 2023

BACKGROUND

Chickenpox is an old but easily neglected infectious disease. Although chickenpox is preventable by vaccines, vaccine breakthroughs often occur, and the chickenpox epidemic is on the rise. Chickenpox is not included in the list of regulated communicable diseases that must be reported and controlled by public and health departments; therefore, it is crucial to rapidly identify and report varicella outbreaks during the early stages. The Baidu index (BDI) can supplement the traditional surveillance system for infectious diseases, such as brucellosis and dengue, in China. The number of reported chickenpox cases and internet search data also showed a similar trend. BDI can be a useful tool to display the outbreak of infectious diseases.

OBJECTIVE

This study aimed to develop an efficient disease surveillance method that uses BDI to assist in traditional surveillance.

METHODS

Chickenpox incidence data (weekly from January 2017 to June 2021) reported by the Yunnan Province Center for Disease Control and Prevention were obtained to evaluate the relationship between the incidence of chickenpox and BDI. We applied a support vector machine regression (SVR) model and a multiple regression prediction model with BDI to predict the incidence of chickenpox. In addition, we used the SVR model to predict the number of chickenpox cases from June 2021 to the first week of April 2022.

RESULTS

The analysis showed that there was a close correlation between the weekly number of newly diagnosed cases and the BDI. In the search terms we collected, the highest Spearman correlation coefficient was 0.747. Most BDI search terms, such as “chickenpox,” “chickenpox treatment,” “treatment of chickenpox,” “chickenpox symptoms,” and “chickenpox virus,” trend consistently. Some BDI search terms, such as “chickenpox pictures,” “symptoms of chickenpox,” “chickenpox vaccine,” and “is chickenpox vaccine necessary,” appeared earlier than the trend of “chickenpox virus.” The 2 models were compared, the SVR model performed better in all the applied measurements: fitting effect, R2=0.9108, root mean square error (RMSE)=96.2995, and mean absolute error (MAE)=73.3988; and prediction effect, R2=0.548, RMSE=189.1807, and MAE=147.5412. In addition, we applied the SVR model to predict the number of reported cases weekly in Yunnan from June 2021 to April 2022 using the same period of the BDI. The results showed that the fluctuation of the time series from July 2021 to April 2022 was similar to that of the last year and a half with no change in the level of prevention and control.

CONCLUSIONS

These findings indicated that the BDI in Yunnan Province can predict the incidence of chickenpox in the same period. Thus, the BDI is a useful tool for monitoring the chickenpox epidemic and for complementing traditional monitoring systems.
Gamification in Mobile Apps for Children With Disabilities: Scoping Review (Preprint)
Authors: Mahmoudi Ebrahim , Yejong Yoo Paul , Chandra Ananya , Cardoso Roberta , Denner Dos Santos Carlos , Majnemer Annette , Shikako Keiko
Published: May 2023

BACKGROUND

Children with disabilities face numerous challenges in accessing health services. Mobile health is an emerging field that could significantly reduce health inequities by providing more accessible services. Many mobile apps incorporate gamification elements such as feedback, points, and stories to increase engagement and motivation; however, little is known about how gamification has been incorporated in mobile apps for children with disabilities.

OBJECTIVE

This scoping review aims to identify and synthesize the existing research evidence on the use of gamification in mobile apps for children with disabilities. Specifically, the objectives were to (1) identify the categories of these mobile apps (eg, treatment and educational) (2), describe the health-related outcomes they target, (3) assess the types and levels of gamification elements used within these apps, and (4) determine the reasons for incorporating gamification elements into mobile apps.

METHODS

We searched MEDLINE, PsycINFO, CINAHL, Embase, the ACM Digital Library, and IEEE Xplore databases to identify papers published between 2008 and 2023. Original empirical research studies reporting on gamified mobile apps for children with disabilities that implemented at least 1 gamification strategy or tactic were included. Studies investigating serious games or full-fledged games were excluded.

RESULTS

A total of 38 studies reporting on 32 unique gamified mobile apps were included. Findings showed that gamified apps focus on communication skills and oral health in children with autism spectrum disorder while also addressing self-management and academic skills for other disability groups. Gamified mobile apps have demonstrated potential benefits across different populations and conditions; however, there were mixed results regarding their impact. The gamification strategies included fun and playfulness (23/32, 72%), feedback on performance (17/32, 53%), and reinforcement (17/32, 53%) in more than half of apps, whereas social connectivity was used as a gamification strategy in only 4 (12%) mobile apps. There were 2 main reasons for integrating gamification elements into mobile apps described in 16 (42%) studies: increasing user engagement and motivation and enhancing intervention effects.

CONCLUSIONS

This scoping review offers researchers a comprehensive review of the gamification elements currently used in mobile apps for the purposes of treatment, education, symptom management, and assessment for children with disabilities. In addition, it indicates that studies on certain disability groups and examinations of health-related outcomes have been neglected, highlighting the need for further investigations in these areas. Furthermore, research is needed to investigate the effectiveness of mobile-based gamification elements on health and health behavior outcomes, as well as the healthy development of children with disabilities.
MANAJEMEN PENGELOLAAN LIMBAH B3 DI RSUD DRS. H. AMRI TAMBUNAN
Authors: Nst Adellia Shaffenia Sinar , Hari Kusnanto  , Darwito
Published: May 2023

Latar belakang: Meningkatnya jumlah rumah sakit menyebabkan jumlah timbulan limbah medis yang dihasilkan juga ikut meningkat. Limbah rumah sakit berpotensi mencemari lingkungan dan dapat menyebabkan kecelakaan kerja serta penularan penyakit jika limbah medis rumah sakit tidak di kelola dengan baik. Pengelolaan limbah di rumah sakit adalah tanggung jawab pihak rumah sakit dan seluruh tenaga kesehatannya oleh karena itu pengelolaan limbah harus sesuai dengan peraturan perundang-undangan yang berlaku dan peran manajemen rumah sakit juga sangat penting dimulai dari perencanaan, pengorganisasian, pelaksanaan, dan pengawasan.

Tujuan: Penelitian ini bertujuan untuk mengidentifikasi peran manajemen dan kebijakan dalam pengelolaan limbah B3 di RSUD Drs. H. Amri Tambunan.

Metode: Penelitian ini menggunakan metode kualitatif dengan pendekatan deskriptif. Pengumpulan data menggunakan observasi sistematis dan wawancara mendalam.

Hasil dan pembahasan: Hasil penelitian menunjukkan sudah sesuai dengan peraturan yang berlaku tetapi belum optimal. Pada tahap perencanaan dan pengawasan sudah berjalan dengan baik tetapi tahap pengorganisasian dan pelaksanaan belum terlaksana dengan baik. Petugas tidak menggunakan APD yang lengkap, masih belum adanya pembagian tugas yang jelas, dan petugas belum mendapatkan pelatihan dalam pengelolaan limbah B3.

Kesimpulan dan saran: Diharapkan rumah sakit melakukan pelatihan khusus tentang pengelolaan limbah B3 bagi petugas agar dapat melakukan tanggung jawabnya sesuai dengan ketentuan yang telah ditetapkan.

 

 

 

 

 

 

Kata kunci: Manajemen, Peraturan, Limbah B3
Producción de diferencias de género en ciencias: poder, identidad y discurso
Authors: Jara Colicoy Natalia Andrea , Matus Cánovas Claudia Lorena
Published: May 2023

El propósito de esta investigación es abordar la producción de diferencias de género en el contexto escolar —particularmente en las clases de ciencias naturales— mediante el análisis de las relaciones de poder inscritas en mecanismos discursivos y materiales que instalan normas de género para la producción de diferencias, asimetrías y prácticas de discriminación. Para lograr tales objetivos, diseñamos estudios de caso múltiples en tres escuelas en Santiago de Chile, una de hombres, otra de mujeres y una mixta. Las prácticas de investigación se orientaron a partir de un enfoque etnográfico que incorpora entrevistas en profundidad a distintos actores de la comunidad educativa. Los resultados producidos interrelacionadamente en los tres casos muestran cómo los discursos específicos de la heteronormatividad actúan en la producción de relaciones de poder o relaciones estratégicas que están en la base de lo que se entiende por “diferencias de género” en el contexto escolar.
Eutanasia y suicidio asistido: un análisis de derecho comparado
Authors: Buriticá-Arango Esteban , Agón-López Juan Guillermo
Published: May 2023

Este artículo compara los desarrollos legislativos y jurisprudenciales que han conducido a la legalización y regulación de la eutanasia y el suicidio asistido en trece países. Inicialmente, explica la naturaleza, características e implicaciones éticas y jurídicas de la eutanasia y el suicidio asistido. Luego, analiza los criterios de elegibilidad de los pacientes, relacionados con la naturaleza de la enfermedad (terminal, incurable o curable), la edad (niños o adultos) y la nacionalidad (nacionales, residentes o extranjeros). Finalmente, analiza las características de la normativa sobre la eutanasia y el suicidio asistido (despenalización o regulación), así como la naturaleza (constitucional o legal) del derecho a la asistencia médica para morir.
Principios para un sistema de justicia digital eficaz en México, a través de la reforma al artículo 17 constitucional
Authors: Arley Orduña Amada María
Published: May 2023

En el presente artículo explicaré la visión y conceptos para diseñar y construir un sistema de justicia digital eficaz, con el objetivo de que sirva para establecer bases fundamentales que perduren en el tiempo y sobrevivan a los cambios y desarrollos tecnológicos. Y como estos conceptos se pueden reflejar en constructos normativos de forma armónica en tres Iniciativas de Ley: 1) la iniciativa proyecto de Decreto por el que se Reforma al Artículo 17 Constitucional en Materia de Impartición de Justicia Digital; 2) la Ley para la reglamentación del expediente judicial electrónico y en materia de reducción de uso de papel físico, y 3) la Iniciativa proyecto de decreto por el que se expide la Ley general de mecanismos alternativos de solución de controversias, y la propuesta de cambios al capítulo III, referente a los mecanismos alternativos de solución de controversias en línea.
La especial transcendencia constitucional de la custodia compartida en el derecho español a través de la jurisprudencia
Authors: Ruiz-Rico Ruiz Catalina
Published: May 2023

Los objetivos de este estudio se centran en investigar la dimensión constitucional de la custodia compartida en el derecho español a través del desarrollo jurisprudencial y el recurso al derecho comparado; los efectos discriminatorios en la asunción de obligaciones familiares; la interpretación del interés de los niños desde la perspectiva del derecho de igualdad; el alcance de la corresponsabilidad como derecho fundamental. La metodología se basa en la aplicación de la “perspectiva de géneros” a los estereotipos en el cuidado de los hijos y la contribución de la jurisprudencia ordinaria a la paridad en las responsabilidades familiares. Entre los resultados destacan la constitucionalización del interés del menor, la conveniencia de aproximar las instituciones de patria potestad y custodia compartida para evitar un trato desigual de niños, niñas, adolescentes y progenitores; el riesgo de discriminación de los padres por circunstancias familiares y personales con base en los criterios judiciales de custodia compartida y la configuración de la corresponsabilidad parental como derecho. Como limitaciones se señalan la excesiva judicialización de la custodia compartida, la supremacía del interés de los niños sobre el derecho fundamental de igualdad, y el carácter no vinculante de la corresponsabilidad en la legislación de igualdad. La originalidad radica en la aplicación de una perspectiva de géneros inclusiva y no excluyente en interés del niño; la inconstitucionalidad de la custodia exclusiva como régimen general; la evolución hacia la corresponsabilidad como derecho fundamental; además de la especial transcendencia constitucional de la custodia compartida por falta de doctrina del Tribunal Constitucional español.
Coincidencias entre responsabilidad social corporativa y derechos humanos. Una revisión a la respuesta empresarial durante la crisis del COVID-19 en España
Authors: Sotelo-Torres Claudio Renato A.
Published: May 2023

Suele decirse que las iniciativas empresariales de naturaleza voluntaria son inefectivas porque están exentas de control jurídico e institucional. Sin embargo, en el presente trabajo se sostiene que a partir de las teorías integradoras y éticas sobre la responsabilidad social corporativa, se puede favorecer la protección de los derechos humanos a través de esta herramienta de gestión. Luego, se exploran las alternativas en materia de responsabilidad social corporativa que tienen a la mano las empresas comprometidas con los derechos humanos y el desarrollo sostenible. Finalmente, tomando en consideración algunos informes que documentan la respuesta empresarial durante la crisis del COVID-19 en España, se pone en evidencia la utilidad de la responsabilidad social corporativa en la protección de los derechos humanos.
200 años de Constituciones nacionales colombianas (1821-2021)
Authors: Arenas Mendoza Hugo Andrés
Published: May 2023

Este artículo de investigación intenta establecer las razones por las que se han producido los cambios de constituciones a través de la historia colombiana; para esto, se debe analizar el contexto histórico en que se produce cada una de ellas, específicamente, se estudiarán las cartas fundamentales de 1821, 1830, 1832, 1843, 1853, 1858, 1863, 1886 y la vigente de 1991. Para esto, se utilizará tanto el método histórico-jurídico como el inductivo, lo que permite sacar algunos parámetros para entender los cambios constitucionales y su relación con los factores reales de poder. En conclusión, los cambios constitucionales en Colombia han obedecido a diferentes causas como la independencia ante la corona española, las guerras civiles, las crisis económicas y las causas religiosas.
¿Políticos judiciales? Trayectorias ex ante y ex post de los exjueces de cuatro cortes constitucionales latinoamericanas (2000-2015)
Authors: Iñeguez Chablay María Fernanda
Published: May 2023

Se ha escrito poco sobre las carreras profesionales de quienes integran las instituciones del poder judicial, y existe menos de las trayectorias políticas de exmagistrados constitucionales, pese a que integran espacios con una alta visibilidad política. Por ello la investigación responde ¿en qué medida las cortes constitucionales incentivan el desarrollo de carreras políticas antes y después? Mediante un análisis cuantitativo se identifica de dónde vienen y a dónde van los exjueces constitucionales de cuatro países de Latinoamérica. En los resultados se pudo observar que a las cortes constitucionales llegan algunos políticos y que, tras su salida de la institución, regresan a la carrera política. Así también, los datos evidencian que la carrera judicial no alcanza ni el 40% de los magistrados, lo que permite abrir una discusión sobre el perfil profesional de quienes integran las cortes, y con ello el análisis del comportamiento judicial.
Regresión por transformación: Cambio Constitucional en tiempos de la denominada “Cuarta Transformación”
Authors: Olaiz González Jaime
Published: May 2023

Desde 2018, México atraviesa un proceso radica de transformación política. Este artículo explora la forma en que la nueva élite del poder ha predicado sus particulares perspectivas en clave de cambio constitucional. A través del prisma de la influyente teoría de Bruce Ackerman sobre las vías contemporáneas del constitucionalismo, se examina el nuevo ciclo de trasformación impulsado por el nuevo gobierno, para determinar si su narrativa se acerca a los patrones del constitucionalismo revolucionario o, por el contrario, está más en sintonía con una estrategia preservacionista de cambio constitucional, que en el artículo se describe como regresión por transformación.
Antinomia Normativa: ponderación de derechos fundamentales en el contexto salvadoreño
Authors: Zometa Manuel
Published: May 2023

El conflicto entre derechos fundamentales, o “antinomia normativa” es una forma jurídica que trata sobre la interferencia de un derecho sobre otro, tanto en las medidas de protección, consecución o en el ejercicio de un derecho. El presente estudio analiza la antinomia normativa derivada de la colisión entre el derecho a la libertad, en sus manifestaciones de libertad de tránsito y a no ser retenido en contra de la voluntad, en el contexto de las medidas decretadas por el Órgano Ejecutivo Salvadoreño para la protección del derecho a la salud pública durante la pandemia originada por el COVID-19; haciendo uso de la fórmula del peso, propuesta por Robert Alexy en el método de la ponderación y racionalidad de derechos fundamentales.
El derecho a la consulta de los pueblos indígenas: una propuesta de sistematización para el caso mexicano
Authors: López Córdova Velasco Carlos , Gaussens Pierre
Published: May 2023

Este artículo tiene como propósito sistematizar el derecho a la consulta de los pueblos indígenas para el caso mexicano. Mediante el análisis jurídico de sus fuentes, tanto normativas como jurisprudenciales, a nivel nacional e internacional, propone una sistematización que presenta los elementos centrales del derecho a la consulta. El principal aporte radica en una propuesta de tipología sobre los principios de este derecho, mientras que el resultado más relevante se refiere al problema fundamental que plantea su aplicación, con respecto al consentimiento de las comunidades consultadas.
Los derechos fundamentales ante las aporías de la era digital
Authors: Benlloch Domènech Cristina , Sarrión Esteve Joaquín
Published: May 2023

El proceso de transformación digital que vivimos y el desarrollo progresivo de las tecnologías disruptivas emergentes están afectando al derecho, y en particular al constitucional, al menos tal y como se había entendido hasta ahora, especialmente desde la perspectiva del paradigma de los derechos fundamentales y de las categorías y conceptos utilizados en la dogmática constitucional. Este pequeño trabajo, desde una perspectiva multidiciplinar, incluyendo la dogmática constitucional (análisis constitucional) y la sociología jurídica (análisis social), constituye una aportación al debate dogmático en torno a las aporías que enfrentan los derechos fundamentales en la era digital.
NeuroDerechos Humanos y Neuroabolicionismo Penal: Comentarios críticos frente a la neuropredicción y la detección de mentiras
Authors: Borbón Diego , Borbón Luisa
Published: May 2023

En este artículo se aborda de manera crítica la conveniencia de crear nuevos neuroderechos humanos para enfrentar el uso de las tecnologías de neuropredicción y de detección de mentiras en materia penal. Sobre dicho punto, se argumenta que los neuroderechos podrían ser conceptualmente problemáticos, u ofrecer una protección menor de la que puede extenderse por mejores interpretaciones de los actuales derechos fundamentales y los principios constitucionales del derecho penal. El artículo finaliza formulando una nueva propuesta crítica para limitar definitivamente los usos indignos de la neurotecnología y plantear la abolición del derecho penal; a esta propuesta la hemos denominado “neuroabolicionismo pe-nal”.
Nuevos derechos del ser humano
Authors: Rocha Martínez Verónica Ethel
Published: May 2023

El avance científico en el conocimiento del cerebro y la existencia de neuro- tecnologías implican considerar a los neuroderechos en la agenda parlamentaria de cualquier país, y también como parte de derechos fundamentales de cuarta generación. Se pretende definir algunos de estos nuevos derechos como un aporte reflexivo requerido para una labor legislativa respetuosa y posible.
La cuestión animal, el derecho y los derechos humanos. Análisis de la Ley 17/2021 sobre el régimen jurídico de los animales en España
Authors: Díez Spelz Juan Francisco
Published: May 2023

La inquietud del hombre y su posición frente a otros seres vivos estuvieron siempre presentes en muchas de las corrientes filosóficas occidentales. Hoy, el debate jurídico sobre la dignidad, la moralidad, la sensibilidad e, incluso, la personalidad de estos seres se encuentra vigente en muchos países que buscan modificar y crear leyes, como la Ley 17/2021 en España, que al cambiar el estatus jurídico de los animales a “seres sintientes” logra que se amplíe la protección hacia éstos, estableciendo nuevas responsabilidades y deberes. Este artículo comenta sobre este cambio legislativo y explora la posibilidad de atribución de derechos a los animales.
Desalación de agua y justicia energética. La Agenda 2030 para el Desarrollo Sostenible
Authors: Nava Escudero César
Published: May 2023

Este trabajo explica la importancia de desalar agua de mar ante la escasez de agua en el mundo. Ya que los métodos para obtener agua desalada normalmente consumen energías convencionales, se plantea que dicha actividad sea con energía justa, es decir, energía asequible, eficiente, sostenible, y renovable. Lo anterior, para cumplir con las metas de la Agenda 2030 para el Desarrollo Sostenible según el objetivo 6: “Garantizar la disponibilidad y la gestión sostenible del agua y el saneamiento para todos”, y el objetivo 7: “Garantizar el acceso a una energía asequible, fiable, sostenible y moderna para todos”. Al efecto, se revisan experiencias de desalación en el mundo y contenidos del concepto de “justicia energética”. Se concluye que desalar agua a cualquier costo energético y consumir energía convencional o renovable a cualquier costo socioambiental no son alternativas sostenibles.
El discurso del ámbito jurídico constitucional desde la perspectiva de la teoría comunicacional del derecho
Authors: Pita Simón Vladimir
Published: May 2023

El reconocimiento de la retórica como una dimensión esencial al fenómeno jurídico se corresponde con la concepción del derecho asumida por la teoría comunicacional del derecho, como texto de naturaleza regulativa o directiva que encuentra en el lenguaje de los juristas un medio de expresión universal. Es el ámbito jurídico constitucional el que brinda la oportunidad de esclarecer el proceso de construcción significativo del derecho desde instancias prenormativas del discurso constituyente hasta las normativas, características del discurso propiamente constitucional. La argumentación y la ideología se muestran como elementos fundamentales dentro de este proceso comunicativo del mundo jurídico, donde la retórica se convierte en un sustrato epistemológico que afecta la naturaleza misma del fenómeno constitucional.
La interpretación de la noción de zona económica exclusiva en el derecho penal mexicano
Authors: Peniche Luna César Andrés
Published: May 2023

La zona económica exclusiva fue concebida, dentro del derecho internacional, como un área marina que pretendía reservar los recursos naturales que ahí se encontraban para el Estado ribereño. Este sentido fue el que se codificó en la Convención de Naciones Unidas sobre el Derecho del Mar y respetado en la Convención de las Naciones Unidas contra el Tráfico Ilícito de Estupefacientes y Sustancias Sicotrópicas de 1988. Empero, los Estados ribereños han intentado ampliar la jurisdicción que tienen sobre la ZEE a otras actividades, tal como la persecución de delitos por tráfico de drogas. En México, dos decisiones recientes de la Suprema Corte de Justicia de la Nación han apuntado hacia ese objetivo. Estos criterios, a la luz de las disposiciones relevantes de la Convemar y la Convención de 1988, son manifiestamente infundados, y deben revertirse para evitar la responsabilidad internacional.
Da mihi factum dabo tibi ius. Notas sobre la aplicación del derecho extranjero en casos iusprivatistas multinacionales y su vinculación con el acceso a la justicia en el Código Civil y Comercial de la República Argentina
Authors: Wegher Osci Florencia Soledad
Published: May 2023

El presente trabajo analiza la regulación en el derecho argentino de la aplicación de derecho extranjero en casos multinacionales de derecho privado. Para ello observaremos este problema desde el prisma del acceso a la justicia, especialmente considerando las intersecciones entre el derecho internacional privado y los derechos humanos, atendiendo al lugar que ocupa la efectiva aplicación del derecho extranjero a los casos con componentes internacionales, siendo este paradigma tanto un prisma de análisis para los casos concretos, como el eje vertebral del esquema arquitectónico que atraviesa la nueva regulación de las relaciones privadas en el ordenamiento jurídico argentino.
GUÍA Y RECOMENDACIONES PARA ELABORAR EL MARCO NORMATIVO EN MATERIA DE REPOSITORIOS UNIVERSITARIOS INTEROPERABLES
Authors:   Dirección General de Repositorios Universitarios, Chávez Méndez Ariana , Coronel Rivera Yesica Maribel ,   Dirección General de Asuntos Jurídicos, Lugo Calleja Inocente ,   Dirección General de Asuntos Jurídicos, Sleman Valdés Luis ,   Instituto de Investigaciones Bibliográficas, Chávez Sánchez Guillermo ,   Dirección General de Publicaciones y Fomento Editorial, Santa Rita Nava Felipe de Jesús ,   Dirección General de Publicaciones y Fomento Editorial, Sáenz González Rubén Ignacio ,   Dirección General de Repositorios Universitarios
Published: May 2023

Documento elaborado por la Comisión de Normatividad de Contenidos Digitales del Comité Técnico del Repositorio Institucional de la UNAM, como un producto del esfuerzo conjunto de instancias académicas con autoridad para dictaminar de forma imparcial un fruto de esta magnitud. Esta Guía pretende asistir y orientar a las personas responsables de los repositorios universitarios encargadas de elaborar el marco normativo del repositorio de su entidad o dependencia y a todos aquellos que participan en el complejo acto de normar la publicación y difusión de los contenidos digitales y metadatos en repositorios digitales de la Universidad.
Analysis of Mass Characteristics of Aircraft Fuselage Construction Materials
Authors: Pripadchev A.D. , Osipov E.V. , Magdin A.G. , Gorbunov A.A. , Nesterenko R.A. , Kudryavtsev D.V.
Published: May 2023

Theoretical formulas for calculating the mass of an airplane fuselage are analyzed, and the parameters affecting the final mass of the structure are determined: geometric and physical characteristics of the power set, that depend on the strength, density, and stiffness of the material of the power set elements. The advantages of weight and strength characteristics of composite materials and the latest structural alloys over the characteristics of traditional materials that are used in aircraft and rocket engineering in the design of aircraft are considered. Comparison and analysis of several types of composite materials, as well as third-generation aluminum alloys with a chemical composition improved by alloying with lithium, by the criteria of density, strength, yield, and stiffness are carried out. The effect of applying different modern structural materials with reduced density and increased strength on the fuselage structure mass of the aircraft is considered and analyzed. The results of several analytical calculations by a number of authors of scientific publications, which show a significant reduction in the weight of the fuselage structure when using composite materials instead of traditional structural metal alloys such as D16-T and AA2124, are presented. An efficiency of a method of additionally aircraft structure weight reduction made of composite materials by optimizing the topology of the power elements of the structure - a method of optimizing the structural material distribution to create a load-bearing structure, which consists of selecting such geometric dimensions and shapes of the power elements, at which the material consumption, and therefore the final structure mass is the lowest with preserved strength characteristics of the structure, is considered. A conclusion about the obvious superiority of mechanical and weight properties of polymer composites reinforced with carbon or organic fiber fillers over lightweight third-generation aluminum alloys and laminated metal-polymer materials has been made based on the analysis of the results of the conducted research. The results of the analyzed studies also confirm the conclusions drawn, showing a 29.9 % decrease in the weight of the fuselage structure, and the optimization of the power element topology proposed as an additional weight reduction will theoretically make it possible to reduce the material intensity of the composite structure, thereby reducing its weight by about 18 %.
Features of Machine Grinding of Surfaces with a Flap Wheel
Authors: Starodubtseva D.A. , Koltsov V.P. , Vinh Le Tri , Tardybaeva E.V.
Published: May 2023

In order to obtain the necessary shape of long panels and sheaths, the aircraft industry successfully uses a complex technology of shaping. Grinding, as an operation in a complex technological process, is provided after the operation of shot-peen forming before hardening. It is designed to ensure that the roughness and final aerodynamic shape of the surface meet the requirements established by the drawing of the part. To implement this technology, a special installation UDF-4 (shot-impact forming unit) was designed and manufactured at the Irkutsk National Research Technical University. The version of this installation was equipped with a CNC system and a revolver stripping head with 4-flap wheels. The possibility of choosing the necessary flap wheels in the process of grinding, depending on the curvature and width of the treated surface, significantly expanded the technological capabilities of the installation. The elastic abrasive flap wheels of a straight profile used in production have proven themselves well both in terms of grinding performance and tool durability. However, practice has shown that due to the complex impact of abrasive petals during contact with the treated surface, a special zone of uneven impact along the length of the contact of the petals is formed during grinding. The results of experimental studies have shown that the roughness of the treated surface is significantly improved when the direction of movement of the flap wheels feed in the contact zone is changed from oncoming to passing. The paper presents experimental data on studies of changes in surface roughness in the contact zone with the abrasive flap wheels during grinding, depending on the processing modes, as well as the results of an experimental study of the quality of the treated surface with counter and passing feed.
Research of the Influence of the Quadrature Components Mismatch on the Noise Immunity of OFDM and UFMC Signals
Authors: Belousov A.Yu. , Khvorenkov V.V.
Published: May 2023

The method of direct modulation using complex signals is used to implement signal paths of transmitters in base stations of cellular communication systems. In the process of modulation, there are mismatches of the gain coefficient and the phase of the quadrature components of the signal. Mismatch degrades the Error Vector Magnitude (EVM) at the receiver, which in turn results in an increased Bit Error Rate (BER). The quality of the received signal is expressed in bit error rate. The mismatch of the amplitude and phase of the quadrature components is one of the most important factors making the greatest contribution to the amplitude of the error vector, and which must be investigated. The paper presents a research of the influence of the mismatch on the OFDM (Orthogonal frequency-division multiplexing) and UFMC (universal filtered multi-carrier) technologies. A model of the transmitter, communication channel and receiver for OFDM and UFMC signals has been developed. The model was built in the MatLab software environment. In the work, by studying the simulation model, the dependence of the noise immunity of technologies was studied by changing the parameters of the communication channel, such as the amplitude and phase mismatch of the quadrature components of the signal, as well as the signal-to-noise ratio. Also, a comparative analysis of such signal parameters as the occupied bandwidth, peak to average ratio, frequency of occurrence of bits with an error was carried out. Based on the results of the study, graphs of the dependence of the error probability and the signal peak to average ratio on the mismatch of the quadrature components were obtained for two technologies, OFDM and UFMC. The study allows us to highlight the advantages of UFMC technology, which are expressed in spectral efficiency, noise immunity and the level of the signal peak to the average ratio.
Investigation of Existence of Steady States of a Solar Power Plant Operating in the Distribution Network of an Electric Power System
Authors: Guryev V.V. , Kuvshinov V.V. , Yakimovich B.A. , Al Bairmani A.G. , Kakushina E.G.
Published: May 2023

The paper presents the results of studies of the steady-state operating modes of solar photovoltaic stations. Using the data obtained, it is possible to significantly increase the efficiency of using solar power generating plants and significantly increase the service life of additional equipment. The relevance of this study is due to the increasing demand for low-power electric power systems, as well as for renewable energy technologies. For the research, materials were taken from relevant international departments and agencies, the Ministry of Energy of the Russian Federation. In addition, the sources of data are publications and studies of Russian and foreign scientists on the issues under study. The Federal Law No. 35-FZ “On Electricity”, adopted in December 2019 by the State Duma of the Russian Federation, introduces such a concept as “Micro-generation facility”, thereby simplifying the possibility of installing, connecting to the general network of an electrical system, for example, a small solar power plant (SPP) consumer. Small-scale electric power industry at this stage of its life is an energy-efficient tool in the restructuring of the energy sector of the Russian Federation, contributing to the abandonment of the traditional centralized system based on the use of large sources of electric power production, and the transition to alternative methods of generating electricity based on the use of energy sources, updated for specific natural conditions and requests of potential consumers. Reducing pollutants and emissions that are harmful to human health can reduce the level of the existing burden on the country's economy and give an impetus to the development of its potential due to the freed up resources. reduce the burden on the economy, thereby freeing up resources for its growth. Of course, the transition from traditional economic models to the model of “green growth” can be realized only if significant efforts are made to expand international cooperation in this area. At the same time, there is a need for consistent implementation of events at various levels on the part of all states, as well as maintaining the chosen political course for many years.
Development of Microstrip Decimeter Antennas with Circular Polarization
Authors: Buzanov R.A. , Shirokikh S.A. , Shishakov K.V.
Published: May 2023

Modern design variants of microstrip antennas with circular polarization are considered, in which circular polarization is created using single-point and two-point power supply. To manufacture the studied antenna model with circular polarization, the simplest form of the antenna was chosen; the one with a radiator in the form of a continuous circle, which is powered by a two-point scheme. With regard to use in intra-object telemetry systems, the frequency of operation range of 640 ... 650 MHz was chosen. Two options for a two-point power supply of such an antenna were studied - with the help of a symmetrical and asymmetric square strip bridge. Calculation, coordination and tuning simulation of power divider variants were performed. As a result, the manufactured layout of the first antenna design turned out to be three-layered, the second - two-layered. The technique for creating antennas includes an estimated calculation of geometric dimensions, which was further refined using computer simulation in the CST Microwave Studio program. Frequency tuning of the completed antenna layouts is carried out using adjusting teeth along the contour of the round radiator. The study of the created antenna layouts showed better manufacturability and stability of the characteristics of a two-layer structure compared to a three-layer one. Therefore, a two-layer round antenna with a point-to-point power supply was chosen for production. It is designed for telemetric radio channels inside enclosed spaces. The measurements performed showed that the manufactured antenna operates in right-hand circular polarization with an ellipticity factor of 1.2 dB. The standing wave ratio in the operating frequency band of 640…650 MHz did not exceed 1.32, the gain was at least 5 dBi, the width of the radiation patterns in two planes was 95 and 93 angular degrees, respectively. The antenna provides for an operation mode as a transceiver, since the decoupling of the receiving and transmitting paths is carried out due to different polarization, for which it is necessary to connect the second input of the power divider instead of a balanced resistor to the receiving device.
Development of a Bench for Analyzing the Radio Station Operation in the APCO P25, DMR and TETRA Communication Standards Based on Broadband Software-Defined Radios and GNU Radio Software Toolkit
Authors: Korobeynikov A.V. , Boyarshinov M.A.
Published: May 2023

The article discusses the development of an instrument complex (bench, stand) for the study of digital radio communication standards: APCO P25, DMR and TETRA, based on software-defined radio systems (SDR) technologies in voice mode. The bench is based on the HackRF One broadband SDR transceiver and the GNU Radio open software toolkit. Along with the SDR transceiver HackRF One, it is proposed to use the SDR TV tuner AstroMeta Digital TV Dongle as an available receiver. The structure of the hardware and software parts of the bench is proposed. The software implementation of listed digital radio communication standards is based on the open libraries of the Osmocom project: the BoadBot OP25 and TETRA Live Monitor libraries. The operating system Linux Debian 10 and the software toolkit GNU Radio 3.7 were used for practical testing of the bench functioning. The practical testing results of the developed bench are presented both when interacting in voice mode with radio stations of the specified radio communication standards, and between the SDR transmitter HackRF One and the SDR TV tuner AstroMeta Digital TV Dongle. For the radio communication standards APCO P25 and DMR, the receiving and transmission modes of the speech signal have been practically tested on the developed bench, and for the radio communication standard TETRA, the modes of scanning the radio broadcast and receiving the speech signal have been tested. As a bench operability confirmation for the listed radio communication standards, the screenshots of programs implementing the specified modes of interaction between the bench hardware components are given. The proposed bench architecture allows to expand the list of supported radio standards. The developed bench can be used: 1) for educational purposes in the study of radio communication standards; 2) in the development and debugging of radio communication systems under development; 3) for control testing during the release of radio systems.
Graphic Analytical Methods for Determining Moist Air Characteristics in Multistage Compressors
Authors: Didenko V.N. , Khvorenkov D.A. , Fakhraziev I.I.
Published: May 2023

The purpose of the study is a comparative analysis of methods for graphic analytical determination of the characteristics of moist air in multistage compressors. Two methods are compared, which differ in the used I-d-diagrams: unified in terms of pressure and atmospheric. I-d-diagrams unified in terms of pressure differ from atmospheric ones by diagrams of saturated air relative humidity () only at various pressures. For multistage compressors, curves are plotted on unified I-d-diagrams at atmospheric pressure and compressed air pressure in intercoolers and receivers. It is assumed that the isobaric cooling of compressed air and condensation of its water vapor occurs in coolers and receivers at the final compression pressure in the previous compressor stages. The method, which uses I-d-diagrams unified by pressure, involves the diagram plotting of air compression and cooling on a grid of curves. An example of plotting such diagrams for a two-stage compressor with an intercooler and a receiver is given. A detailed description of the thermodynamic state of moist air in such a compressor is given. The nodal points of the processes in the compressor are plotted on a pressure-unified I-d-diagram according to the known values of moisture content and air temperature. The pressure and temperature at the end points of compression are calculated by the equations of the polytropic process at n = 1.26. The dew points in the cooler and receiver are graphically defined as the intersection of the curves for the final compression pressures with the corresponding straight lines for constant air moisture content in the compressor stages. The technique using atmospheric (barometric) I-d-diagrams is used in the absence of unified I-d-diagrams suitable for pressure. The essence of the developed technique is to determine the curves on the atmospheric I-d-diagrams, graphically coinciding with the curves A numerical example of the application of such a technique is given. The advantages and disadvantages of both methods are evaluated.
Plant Disease Detection using CNN Techniques
Authors: Sundari S Sivakama , AK Dr. Sampath , Islabudeen Dr. M.
Published: May 2023

Abstract: Plants are the meals supply of the earth. Plant infections and illnesses are consequently a first-rate threat, however the maximum not un-usual place prognosis is basically to study flora for the presence or absence of visible symptoms. The agricultural production of the country gets affected majorly due to pests as they affect the plants and crops. The detection and identification of disease is been observed by farmers and experts through their naked eyes. Based on the leaf image classification, an approach of plant disease recognition model is being developed with the help of deep convolutional networks. Early detection of diseases to which plants are exposed is very important, especially in a country like India with a large population. The diseases caused by bacteria, virus and fungus results on lowering the crop yield in a huge aspect. The loss can be prevented by predicting the plant disease at the earliest. With the help of Deep Learning concepts, the performance and accuracy of disease detection can be improved. It uses image processing concepts for noise reduction, ML and DL concepts i.e., CNN for Problem Solving. This project captures plants and leaf disease and helps farmers to identify and detect the solutions for the problem that is being infected.
Hand Gesture Based Virtual Mouse
Authors: Indraneel K. J. S. S , Reddy P. Narendra , Srinivas G. Leela , Prasad J. Alekh Vara , Kumar Ananthoju Vijay
Published: May 2023

Abstract: Since the invention of the PC, a method for creating a connection cycle between humans and computers is currently being developed. A truly innovative piece of HCI(Human Computer Interaction), the mouse. There are still such gadgets around even though remote control or Bluetooth mouse technology is still in development. A Bluetooth mouse requires a dongle for connectivity and battery. The difficulty of using a mouse increases when it has additional devices. The suggested mouse framework goes beyond the point. This study suggest an HCI-based virtual mouse framework that makes use of computer vision and hand signals. Signals generated with a location method and shading division and captured using a built-in camera and webcam. The customer will be able to exercise partial control over
Sign Language Recognition
Authors: J Yuvasri , S Sujitha , B Pavithra , K Kamali , S Rajalakshmi
Published: May 2023

Abstract: All over the world, the hearing and speaking impaired person communicate through the sign language as it is the only reliable source of interaction with themselves and as well as with normal people. This language is mainly made up ofthe shape of the hand movement and gestures it made. This system aims to bridge this communication gap and aid the deaf and the mute to use technology to carryout their daily transactions by using a simple approach which is easily implementable. Also, to help the hearing and speaking impaired person to communicate with people who do not understand sign language. In this system, the sign language concentrates on the 26 letters of alphabets and some simple phrases like Hello, Good morning, thank you, etc., The proposed system aims to recognize sign language and convert it to text. In this paper a technique is proposed todevelop a system which collects the datasets for the input. Input given to the system is an image of the hand depicting. OpenCV is used as a tool for image processing in the proposed system. The system is trained in a specific which we will discuss in the upcoming sections which predict the result of the input given. This mainly uses the TensorFlow for the prediction analysis and detection analysis
Design of Roll Cage Model For All Terrain Vehicles
Authors: Patil Yash , Pahilwan Pranav , Vaskar Rusihkesh , Upadhye Rutuj , Jadhao Prof. S. M.
Published: May 2023

Abstract: The paper focuses on software design methods and analysis of the roll cage for an All-Terrain Vehicle (ATV). The roll cage is crucial for the safety of the driver and the vehicle's occupants, and the study outlines a step-by-step design methodology using Solid Works and Creo. The design process includes material selection, shape, and welding, followed by Finite Element Analysis for safety and reliability. Static and dynamic stress analyses are performed, and the roll cage is designed to offer double strength in case of rolling while considering aesthetics