bluuebunny/crossref_metadata_2025 huggingface dataset:
Iteration Complexity of Variational Quantum Algorithms
Authors: Kungurtsev Vyacheslav , Korpas Georgios , Marecek Jakub , Zhu Elton Yechao
Published: October 2024

There has been much recent interest in near-term applications of quantum computers, i.e., using quantum circuits that have short decoherence times due to hardware limitations. Variational quantum algorithms (VQA), wherein an optimization algorithm implemented on a classical computer evaluates a parametrized quantum circuit as an objective function, are a leading framework in this space. An enormous breadth of algorithms in this framework have been proposed for solving a range of problems in machine learning, forecasting, applied physics, and combinatorial optimization, among others.In this paper, we analyze the iteration complexity of VQA, that is, the number of steps that VQA requires until its iterates satisfy a surrogate measure of optimality. We argue that although VQA procedures incorporate algorithms that can, in the idealized case, be modeled as classic procedures in the optimization literature, the particular nature of noise in near-term devices invalidates the claim of applicability of off-the-shelf analyses of these algorithms. Specifically, noise makes the evaluations of the objective function via quantum circuits biased. Commonly used optimization procedures, such as SPSA and the parameter shift rule, can thus be seen as derivative-free optimization algorithms with biased function evaluations, for which there are currently no iteration complexity guarantees in the literature. We derive the missing guarantees and find that the rate of convergence is unaffected. However, the level of bias contributes unfavorably to both the constant therein, and the asymptotic distance to stationarity, i.e., the more bias, the farther one is guaranteed, at best, to reach a stationary point of the VQA objective.
Quantum lozenge tiling and entanglement phase transition
Authors: Zhang Zhao , Klich Israel
Published: October 2024

While volume violation of area law has been exhibited in several quantum spin chains, the construction of a corresponding ground state in higher dimensions, entangled in more than one direction, has been an open problem. Here we construct a 2D frustration-free Hamiltonian with maximal violation of the area law. We do so by building a quantum model of random surfaces with color degree of freedom that can be viewed as a collection of colored Dyck paths. The Hamiltonian may be viewed as a 2D generalization of the Fredkin spin chain. It relates all the colored random surface configurations subject to a Dirichlet boundary condition and hard wall constraint from below to one another, and the ground state is therefore a superposition of all such classical states and non-degenerate. Its entanglement entropy between subsystems undergoes a quantum phase transition as the deformation parameter is tuned. The area- and volume-law phases are similar to the one-dimensional model, while the critical point scales with the linear size of the systemLasLlog⁡L. Further it is conjectured that similar models with entanglement phase transitions can be built in higher dimensions with even softer area law violations at the critical point.
Decoding algorithms for surface codes
Authors: deMarti iOlius Antonio , Fuentes Patricio , Orús Román , Crespo Pedro M. , Etxezarreta Martinez Josu
Published: October 2024

Quantum technologies have the potential to solve certain computationally hard problems with polynomial or super-polynomial speedups when compared to classical methods. Unfortunately, the unstable nature of quantum information makes it prone to errors. For this reason, quantum error correction is an invaluable tool to make quantum information reliable and enable the ultimate goal of fault-tolerant quantum computing. Surface codes currently stand as the most promising candidates to build near term error corrected qubits given their two-dimensional architecture, the requirement of only local operations, and high tolerance to quantum noise. Decoding algorithms are an integral component of any error correction scheme, as they are tasked with producing accurate estimates of the errors that affect quantum information, so that they can subsequently be corrected. A critical aspect of decoding algorithms is their speed, since the quantum state will suffer additional errors with the passage of time. This poses a connundrum, where decoding performance is improved at the expense of complexity and viceversa. In this review, a thorough discussion of state-of-the-art decoding algorithms for surface codes is provided. The target audience of this work are both readers with an introductory understanding of the field as well as those seeking to further their knowledge of the decoding paradigm of surface codes. We describe the core principles of these decoding methods as well as existing variants that show promise for improved results. In addition, both the decoding performance, in terms of error correction capability, and decoding complexity, are compared. A review of the existing software tools regarding surface codes decoding is also provided.
Student Responses to Culture-Based Mathematics Learning in the Indonesian and Thailand Education Curricula
Authors: Payadnya I Putu Ade Andre , Wulandar I Gusti Ayu Putu Arya , Puspadewi Kadek Rahayu , Saelee Sompob
Published: October 2024

The aim of this research was to assess how students in Indonesia and Thailand react to ethnomathematics problems within their respective cultures. The participants consisted of 50 students in grades 7 to 12 from Indonesia and Thailand. Descriptive analysis techniques were employed in this study. Data were gathered using questionnaires, tests, and interviews. Subsequently, qualitative descriptive data analysis techniques such as Data Reduction, Data Presentation, Drawing Conclusions, and Verification were applied to analyze the collected data. The results showed that students presented positive responses to the given ethnomathematical problems. From the results of the questionnaire, about 76% showed an average very positive response to ethnomathematics, while the remaining 24% of students showed a moderately positive response to ethnomathematics. From the interview, students stated that students assume that ethnomathematics is interesting and challenging. Students’ answers to the ethnomathematics test showed that they were unable to understand ethnomathematics and tended to work on planning and finally got the wrong results. This is because students who pay less attention to their cultural environment tend to acquire procedural mathematics learning. Therefore, teachers are expected to be able to develop more realistic mathematics learning by linking mathematical concepts with the real world.
Features of the application of methods for assessing the influence of political culture on electoral preferences
Authors:   Южно-Российский институт управления – филиал Российской академии народного хозяйства и государственной службы при Президенте РФ, Ростов-на-Дону, Россия, Александр Владимирович Шкураков , Екатерина Александровна Попова ,   Южно-Российский институт управления – филиал Российской академии народного хозяйства и государственной службы при Президенте РФ, Ростов-на-Дону, Россия
Published: October 2024

The article examines the peculiarities of the application of methods for assessing the influence of political culture on electoral preferences. The analysis of approaches to the definition of political culture is carried out, taking into account the specifics of research related to electoral preferences. The components of political culture are identified on the basis of various approaches. The relationship between the components of political culture and electoral preferences is determined. Definitions of political elites and masses are given. The analysis of the properties of political cultures of elites and masses in Russia based on statistical data is carried out. The methods of assessing the influence of the political culture of elites and masses on electoral preferences, taking into account their properties in Russia, are proposed.
Macroregional identity in the system of intangible resources for territorial development
Authors:   Адыгейский государственный университет, Майкоп, Россия, Зуриет Анзауровна Жаде
Published: October 2024

Discussions about specific substantive markers of macroregional identity are gradually becoming part of spatial projections of identity and new contours of the identitarian research field. The article reveals the essence of such concepts as intangible development resources, spatial/territorial identity and macroregion. A review of the authors' publications devoted to the designated problem is conducted, on the basis of which the author argues that there is no generally accepted interpretation of the phenomenon in Russian science. Based on the constructivist approach and proceeding from the identification of the concepts of spatiality and territoriality, the author understands macroregional identity as a constructed level of spatial-territorial identification, occupying a middle place between regional and national identities, built into the identification matrix, characterized by an understanding of belonging to a macroregion, conditioned by geographical, natural and climatic parameters and historical and cultural homogeneity, which contribute to interregional integration. It is concluded that innovative practices of positive strengthening of the macro-regional level of territorial identification contribute to strengthening of Russian national identity and influence consolidation processes at the macro-regional and national levels.
Empirical analysis of the relationship between farmland transfer-out and poverty alleviation in poverty areas of China
Authors: Zhang Min , Zhang Weiwen , Zhang Na , He Xiaogang
Published: October 2024

Farmland transfer-out is essentially a process of the rural land resource allocation, and it is also of great importance to farmers’ poverty alleviation. The practice of farmland transfer-out in China is generally manifested as farmland expropriation and farmland lease. Based on the survey data of 832 poverty counties in China, this paper empirically analyzed the effects of farmland lease and expropriation on poverty alleviation. The results showed that farmland expropriation and lease in poverty areas could increase farmers’ household income and poverty alleviation, and this conclusion was still valid after instrumental variable estimation and robustness test. Moreover, farmland expropriation significantly promoted the growth of entrepreneurship income and the decrease of farm income, but did not significantly impact non-farm income. However, farmland lease significantly promoted the growth of entrepreneurial income and non-farm income, but was negatively correlated with farm income. It should be noted that farmers’ entrepreneurship strengthened the positive role of farmland expropriation on poverty alleviation, while it did not play a significant role in the relationship between farmland lease and poverty alleviation. Further research showed that the farmland expropriation and lease in poverty areas improved individual well-being through poverty alleviation, and the farmers’ entrepreneurship in poverty areas strengthened this positive effect. This study provides empirical evidence for farmers in poverty areas to achieve poverty alleviation and improve individual subjective well-being through farmland transfer-out.
‘The Subject and Power’ – Four Decades Later: Tracing Foucault’s Evolving Concept of Subjectivation
Authors: Villadsen Kaspar
Published: October 2024

Michel Foucault’s essay ‘The Subject and Power’ has seen four decades. It is the most quoted of Foucault’s shorter texts and exerts a persistent influence across the social sciences and humanities. The essay merges two main trajectories of Foucault’s research in the 1970s: his genealogies of legal-disciplinary power and his studies of pastoral power and governance. This article connects these two trajectories to Althusser’s thesis on the ideological state apparatuses, demonstrating affinities between Althusser’s thesis and Foucault’s diagnosis of the welfare state as a ‘matrix’ of individualising and totalising power. The article suggests that Foucault’s essay straddles between two different concepts of subjectivation. First, one encounters the citizen ‘internally subjugated’ by disciplinary and pastoral power, whereas, at the end, we find a ‘flat’ subject of governance; a form of power which intervenes only in the environment in which individuals make their rational, self-fashioning choices. The implication of Foucault’s newfound concept of governance is  a weakening of the link between subjectivation and the formation of the state, which also meant that the state’s role in reproducing capitalism receded into the background of Foucauldian scholarship. Finally, the article suggests extending Foucault’s analytical ‘matrix’ to current techniques of subjectivation associated with the advent of big data and artificial intelligence, which buttress the expansive technique of predictive profiling.
Medicina y literatura II
Authors: C E Rougier
Published: October 2024

En una primera mirada, medicina y literatura parecieran no tener mayor conexión, sin embargo, no es tan así.  A la medicina se la define como ciencia, pero también como arte; atributo ya aludido en el primer aforismo redactado por ese griego ilustre llamado Hipócrates a quien se lo reconoce como el padre de la medicina. Entonces a través del arte, cualidad intrínseca de la literatura y rasgo más que necesario en la medicina, es que ambas disciplinas tienen un terreno cultural compartido, vínculo estrecho que sirve de vehículo para desarrollar empatía, incrementar el conocimiento humano y promover la reflexión moral. Esto es muy apreciado, aunque, en el fragor de la realidad, a veces, su expresión encuentra algunas dificultades.
La medicina, en los últimos cincuenta años alcanzó, en el plano científico y técnico, un crecimiento exponencial lo que dio origen a un médico dotado con un caudal de conocimientos muy potente en el sector biológico, formal, organicista, pero que lamentablemente durante su formación no ha sido capacitado con igual enjundia para apreciar el componente vitalmente humano, que cada paciente trae a la consulta. Carecer de este recurso, hace escasa su habilidad y predisposición para obtener datos, que con frecuencia son muy indispensables, para sostener el diagnóstico y encarar la solución de la anomalía o enfermedad que el sujeto padece.
Recién nacidos expuestos a sífilis: clasificar para actuar
Authors: E Córdoba , M V Fernandez , V Marini , P Espinosa
Published: October 2024

INTRODUCCIÓN: Las gestantes con sífilis pueden transmitir la enfermedad al feto, lo que resulta en sífilis congénita (SC).
Desde 2017, el Ministerio de Salud de Córdoba cuenta con una Sala de Situación sobre transmisión materno infantil (TMI), la cual ha planteado la siguiente clasificación para recién nacidos (RN) expuestos a sífilis gestacional: SC probada o altamente probable, SC probable o posible o SC poco probable en función del tratamiento materno, la evaluación del RN y el título de la prueba no treponémica de ambos.
OBJETIVO: conocer el escenario epidemiológico de esta infección y clasificar RN expuestos a sífilis gestacional confirmada durante el año 2023, en la Maternidad Provincial "Brigadier General Juan Bautista Bustos, como herramienta para evitar tratamientos y hospitalizaciones innecesarias.
MATERIALES Y MÉTODOS: Se realizó un estudio retrospectivo y descriptivo incluyendo RN expuestos a sífilis gestacional. Se registraron edad materna, tratamiento materno, de la pareja y del RN, VDRL materna y del RN, peso al nacer, semanas de gestación, examen físico y evaluación del RN.
RESULTADOS: En el año 2023 se registraron 3309 RN vivos, de los cuales 336 (10.2%) resultaron expuestos a sífilis gestacional. Se clasificaron en SC poco probable 177/336 (52.7%), SC probable o posible 141/336 (41.9%), y SC probada o altamente probable 18/336 (5.4%).
CONCLUSIÓN: El accionar eficiente del equipo de salud se refleja en las medidas terapéuticas adoptadas en el RN expuesto a sífilis gestacional, reduciendo la necesidad de hospitalizaciones prolongadas.
Estudio comparativo de la conformación de conductos curvos simulados instrumentados con VDW. Rotate y ProTaper Gold
Authors: S Collino , P Barea , R Higa , G Martín
Published: October 2024

INTRODUCCIÓN: Con el advenimiento de la instrumentación mecanizada, aparecieron en el mercado diferentes sistemas de conformación, fabricados con diversas aleaciones, diseños, con mayor flexibilidad y varias cinemáticas. Estos producen una preparación más centrada, reducen riesgos de transportación, perforaciones y permiten preservar mayor cantidad de dentina que la instrumentación manual.
OBJETIVO: Comparar la conformación de conductos curvos simulados (CCS) instrumentados con los sistemas VDW.Rotate™ y ProTaper Gold™. ESPECÍFICOS: 1-Evaluar el ángulo de curvatura de los CCS posterior a la instrumentación con los sistemas VDW.Rotate™ y ProTaper Gold™ en tercio cervical, medio y apical. 2-Determinar la capacidad de transportación y centrado en los tres tercios de los CCS entre dichos sistemas.
 MATERIALES Y MÉTODOS: Se utilizaron 20 bloques de resina acrílica con CCS, divididos en dos grupos de 10 bloques cada uno. En el grupo VDW.Rotate™ los conductos se conformaron con el sistema VDW.Rotate™, y en el grupo ProTaper Gold™ se instrumentaron con las limas recién mencionadas. Ambos sistemas se usaron con movimiento de rotación continua y fueron impulsados con motor X-Smart Plus (Dentsply Sirona), siguiendo un estricto protocolo. Los bloques se escanearon antes y después de ser instrumentados, con el escáner gráfico HP-G3110. Se respetó la misma posición y orientación de los bloques pre y post instrumentación, mediante el software para morfometría Image Pro-Plus v.6. Para la evaluación, los conductos fueron divididos en tres tercios: cervical, medio y apical. Los datos obtenidos fueron analizados mediante Modelo Lineal General Mixto. Se utilizó el soft estadístico InfoStat y en todos los casos el nivel de significación fue del 5%.
 RESULTADOS: Al considerar la variación de curvatura de todo el conducto, VDW.Rotate™ registró las mayores diferencias en contraste con ProTaper Gold™. Este último registró mayor transportación en el tercio coronario y medio a ambos lados del conducto. En el tercio medio, sobre la pared externa de la curvatura, el comportamiento fue semejante en ambos. En el tercio apical, se observó mayor transportación sobre la pared externa de la curvatura, con VDW.Rotate™. Se verificaron diferencias significativas entre sistemas de instrumentación al considerar los tramos coronario y medio del conducto (p=0,01 y p=0,002 respectivamente). En el tercio apical, las diferencias no resultaron estadísticamente significativas. CONCLUSIÓN: Ambos sistemas transportaron en el CCS y presentaron comportamientos similares considerando la curvatura total del conducto. En el tercio apical hubo una tendencia a mayor rectificación con el sistema VDW.Rotate™, especialmente sobre la pared externa del conducto.
Hipertensión arterial pulmonar secundaria a infección por virus de inmunodeficiencia humana: a propósito de un caso
Authors: M L Di Martino , F B Cabrera , F Mezzacapo , I M Gutierrez Magaldi , R J Barcudi , F A Camporro
Published: October 2024

La hipertensión pulmonar es un trastorno que puede involucrar múltiples condiciones clínicas. Dentro de su clasificación, la hipertensión arterial pulmonar se asocia a la infección por el virus de inmunodeficiencia humana, entidad con baja incidencia. Ésta se ha reconocido como factor de riesgo independiente para el desarrollo de hipertensión pulmonar, aumentando la morbimortalidad de estos pacientes. Su diagnóstico precoz supone un reto, por lo que se requiere de un alto grado de sospecha clínica y una cuidadosa evaluación.
Presentamos el caso de una femenina de 31 años que consulta por dolor abdominal y síndrome colestásico, que luego de sucesivos métodos de estudio se llega al diagnóstico de insuficiencia cardíaca derecha secundaria a hipertensión arterial pulmonar por VIH.
La bioética en las investigaciones sin fines registrables
Authors: N Crim
Published: October 2024

La historia de la medicina fue escrita por médicos e investigadores que abocaron su vida a la incansable búsqueda de hechos curiosos que presenciaron o que descubrieron en su praxis. La investigación en medicina en sus orígenes fue algo caótica, y pobremente regida por métodos     
Con el advenimiento del método científico en el siglo XVII se logró un consenso en la forma de realizar, documentar y divulgar los experimentos, y de esa manera favorecer la reproducibilidad. El método científico empieza a tomar relevancia en el área de la física, con Isaac Newton, y luego se fue empleado en otras ciencias, como la medicina.
Evaluación de la satisfacción de los estudiantes de medicina con las actividades de simulación
Authors: Methodo Revista , D G Freille , M D R Barello , P B Senatore
Published: October 2024

INTRODUCCIÓN: El progreso de la ciencia médica y la tecnología han generado un aumento en la demanda de profesionales de la salud altamente cualificados. Esto se debe a las expectativas cada vez más altas de la sociedad en cuanto a la seguridad del paciente y la calidad de la atención médica. Como resultado, las instituciones educativas se enfrentan a una presión creciente para preparar de manera más efectiva a los futuros médicos.
En respuesta a esta necesidad, la simulación clínica ha surgido como una valiosa estrategia educativa. Su objetivo es recrear situaciones médicas de manera realista, sin exponer a los pacientes a riesgos innecesarios. A través de la simulación, los estudiantes de Ciencias de la Salud pueden adquirir conocimientos y habilidades de manera significativa: practicar en un entorno seguro, recibiendo retroalimentación constructiva que les permite mejorar continuamente.
OBJETIVO: Evaluar mediante la escala de ESECS, que ya ha sido validada en otros centros de similares características, la satisfacción de los estudiantes de Medicina con respecto a las experiencias clínicas simuladas.
MATERIAL Y METODO: Se realizó un estudio observacional, transversal, descriptivo sobre la población de estudiantes de Medicina de la Universidad Católica de Córdoba que realizaron actividades de simulación en el Hospital Simulado San José durante el periodo lectivo 2022-2023. Fueron incluidos un total de 309 alumnos que participaron de una encuesta con 17 ítems que valoraban las áreas cognitivas, prácticas y de realismo de la simulación.
RESULTADOS: Participaron un total de 309 estudiantes, siendo un 62.8% (N=194) femeninos y un 37.2% (N=115) masculinos.
Se evaluaron 17 ítems que forman la escala ESECS en la cual los alumnos le otorgan a cada respuesta un puntaje del 1-10 y luego se promedian las respuestas.  La valoración media fue de 7.90 (IC95% 7.67-8.13) y la mediana de 8 (IC95% 7.77-8.23). El puntaje mayor lo obtuvo la calidad de los simuladores (V=8.39 IC95% 8.17-8.62) y el puntaje menor fue la motivación previa para asistir a los prácticos (V=7.49 IC95% 7.26-7.72). 
CONCLUSIÓN: La satisfacción significativa expresada por los estudiantes de Medicina de la UCC respecto a la simulación clínica y la integración de nuevas tecnologías es motivo de aliento para el equipo docente. Este feedback impulsa a profundizar en la implementación de estas herramientas como parte integral de la enseñanza y el entrenamiento, con el fin de convertir el conocimiento teórico en habilidades prácticas que potencien la seguridad del paciente. En este sentido, el Centro se ha propuesto destacar a la simulación clínica como un pilar fundamental en la formación de profesionales de la salud en el país, buscando consolidar su posición como un modelo educativo de vanguardia.
Prevalencia de HTA y frecuencia de pacientes controlados en una muestra hospitalaria
Authors: B Nigro , M Bendersky
Published: October 2024

La hipertensión sigue siendo un importante desafío de la salud pública en todo el mundo porque aumenta el riesgo de enfermedad cardiovascular. Se ha demostrado que el manejo eficaz de la presión arterial reduce la incidencia de Acv, ataque cardiaco e Insuficiencia cardiaca.
La prevalencia actual en nuestro país de Hta es del 36,3%.
En el estudio Renata 2 cuatro de cada diez pacientes Hta, desconocen su condición.
Esta observación no es ajena a lo que sucede globalmente.
En el estudio Pure, solo se logra controlar al 13% de los hipertensos. El 30% tuvo tensión arterial óptima y el otro 30% se encontraba en prehipertensión
Del 40%de los pacientes con Hta, el 40% recibían tratamiento, pero solo el 13% tenían controlada su enfermedad.
Este trabajo de investigación que se realiza en el Servicio de Cardiología del Hospital Nacional de Clínicas de la ciudad de Córdoba, tiene como objetivos evaluar la prevalencia de Hta y frecuencia de pacientes controlados que concurren a consultorio externo. de Cardiología entre el mes de abril de 2021-febrero 2022.
Los datos serán obtenidos de una muestra al azar mediante la utilización de historias clínicas entre el mes de abril 2021-febrero 2022.Un año de Pandemia.
La hipótesis el comprobar el insuficiente control de la hipertensión arterial más allá de lo encontrados en los resultados de los estudios antes mencionados, en nuestra población de la Ciudad de Córdoba, y en un año totalmente diferente, un año de Pandemia. En donde el acceso a la salud se encuentra limitada por el COVID 19.
Síndrome de Jacobsen: Abordaje y tratamiento integrativo interdisciplinario y longitudinal. Reporte de un caso
Authors: L C Brain Lascano , R E Brain , M Sársfield
Published: October 2024

INTRODUCCCION: El síndrome de Jacobsen (deleción 11q) es una condición genética poco común con una prevalencia estimada de 1:100.000 nacimientos, una proporción mujer/hombre de 2:1. Se caracteriza por ser un trastorno clínico causado por aneusomía segmentaria y monosomía por deleción de la región terminal 11q23. El diagnóstico se basa en los hallazgos clínicos (déficit intelectual, dismorfismo facial y trombocitopenia) y se confirma mediante análisis citogenético pre o posnatal. La mortalidad es más prevalente hasta los dos años de edad, debido a malformaciones cardíacas y complicaciones hematológicas. Por lo tanto, el diagnóstico y tratamiento temprano son de suma importancia.
OBJETIVOS: crear conciencia sobre la importancia del enfoque terapéutico interdisciplinario, integrador y longitudinal, apoyado en los buenos resultados obtenidos en un paciente con una intervención temprana y un seguimiento a lo largo de su vida.
MATERIALES Y MÉTODOS: Paciente con antecedentes de cardiopatía congénita y retraso del crecimiento al año de edad, y con dismorfismo craneofacial característico, fue remitido para estudios citogenéticos que reportaron deleción del cromosoma 11, con pérdida del segmento entre bandas q24.1 (Síndrome de Jacobsen). Se implementó un tratamiento interdisciplinario (Pediatra, Hematólogo, Neurólogo, Otorrinolaringólogo, Oftalmólogo, Endocrinólogo, Dermatólogo, Odontólogo, etc.); integral para abordar al paciente ayudando a alcanzar un nivel óptimo de salud hasta la fecha; y longitudinal, realizando evaluaciones clínicas a través del tiempo, durante toda su vida.
Los desafíos de salud bucal en la dentición primaria fueron hipoplasia leve en varios dientes, resalte y sobremordida profundos y arcos dentales estrechos. El discurso fue alterado. Se aplicaron estrategias desde etapas tempranas para prevenir la caries (higiene bucal, asesoramiento dietético, uso de fluoruros y ACP/CPP) y se realizó tratamiento ortopédico para reducir las discrepancias en la dentición primaria y permanente, permitiendo así una mejor articulación del habla (con la ayuda de fonoaudióloga)
CONCLUSIÓN: El diagnóstico y tratamiento tempranos son importantes para reducir la tasa de mortalidad. Al ser un trastorno genético poco común, la documentación es escasa, por lo que este informe contribuye a proporcionar evidencia de buenas prácticas sustentadas en resultados alentadores.
Field test, research and results of a flexible machine with a rotor
Authors: Fataliev Kamil , Qurbanov Huseyn , Nagiyev Elmar Mammadcafar
Published: October 2024

Science-based farming systems have proven that the soil layer after plowing
contains 100-200 million to 2-3 billion weed seeds per hectare, 70-90% of
which can be destroyed by harrowing before and after emergence. Pre-sowing
cultivation with rotor trowels leads to the development of seeds in the soil
and the creation of an aeration process for the root system during the
growing season, which improves plant development and productivity. A
flexible trowel with a rotor was developed in our laboratory. Constructive
and technological parameters were analyzed using the experimental planning
method and optimal results were obtained, considering the diameter of the
rotor and the speed of the unit as the main influencing factors. The
?percentage of lump crushing? was the output parameter, and the ?soil
moisture? was the input parameter. The regression equation and diagrams were
obtained from the mathematical analysis. Optimally, based on 4 experiments,
the unit speed V=15 km/h, the cultivation depth 5-10 cm, and the rotor
diameter D=380 mm were selected. The technological operations carried out
using a flexible trowel with a rotor made 81.28% of the lump crushing in the
soil, which had a significant effect of 95% on the development of the sown
seeds. In the field test, the degree of ?lump crushing? was studied in the
soil with a moisture content of 18-24%. It was found that the fraction of
soil with a size of less than 10 mm amounted to 51%.The size of the lumps
was 10-25, those of 25-50 and 50- 100 mm made up 18%, 13% and 14% of the
soil, respectively. The size of lumps above 100 mm made up 4% of the soil.
An Equity-Focused Evaluation of a Medicaid-funded Statewide Diabetes Quality Improvement Project Collaborative
Authors: J. Joseph Joshua , T. Perzynski Adam , M. Dungan Kathleen , A. Beverly Elizabeth , Einstadter Douglas , Fiegl Jordan , E. Love Thomas , Spence Douglas , Jenkins Katherine , Lorenz Allison , Jalal Uddin Shah , McCutcheon Adams Kelly , W. Konstan Michael , S. Applegate Mary , D. Bolen Shari
Published: October 2024

OBJECTIVE

Evaluation of the Ohio Diabetes Quality Improvement Project (QIP) equity aim to reduce the percentage of Non-Hispanic Black (NHB) and Hispanic patients with an A1c >9% by 20% over 2 years.

RESEARCH DESIGN AND METHODS

Ohio’s Department of Medicaid, Government Resource Center, Medicaid Managed Care Plans and 7 medical schools formed a Diabetes Quality Improvement Project (QIP) collaborative using the collective impact model to improve diabetes outcomes and equity in 20 practices across 11 health systems. The QI strategies included data audit and feedback, peer-to-peer learning, QI coaching/practice facilitation, and subject matter expert consultation through coaching calls, monthly webinars, and annual virtual learning sessions. Electronic health record data was collected for pre-intervention (2019-2020) and intervention (2020-2022) periods. Improvements in A1c were based on prevalence of A1c >9% from pre-intervention, Year 1 and Year 2 stratified by race and ethnicity.

RESULTS

The Diabetes QIP included 7,689 (54% female) sociodemographically diverse patients, self-identifying as non-Hispanic White (NHW) (42%), NHB (43%), Hispanic (8%), non-Hispanic Asian (4%) and other (3%). In year 2 compared to baseline, there were decreases in the proportion of patients with A1c >9% in NHW, NHB and Hispanic patients (NHW 19% to 12% [37% reduction]; NHB 23% to 18% [22% reduction]; and Hispanic 29% to 23% [20% reduction]).

CONCLUSIONS

The Ohio Diabetes QIP focused on multisector collaborative approaches reduced the percentage of patients with A1c > 9% by 20% in NHW, NHB and Hispanic populations. Given the persistence of disparities, further equity-focused refinements are warranted to address disparities in diabetes control.
Bir Hava Aracının Çok Amaçlı Kanat Kiriş Kesit Optimizasyonu
Authors: Demir Hakan , Kaya Necmettin
Published: October 2024

ÖZ
Kanat tasarımında kritik ve dikkat edilmesi gereken parametrelerden birisi de doğal frekanstır. Kanadın doğal frekansının küçük olması kanadın daha fazla yer değiştirmesine neden olur. Diğer taraftan kanadın doğal frekansı ile havanın doğal frekansı eşit olduğunda rezonansa neden olabilir ve bu durumda kanatta yapısal hasar oluşabilir. Kanat doğal frekansını arttırmak için yapılan çalışmalar kanadın rijitliğini arttırırken aynı zamanda, kütle artışına neden olabilir. Bu çalışmada, kanat kütlesinin arttırılmadan doğal frekansının arttırılması amacıyla çok amaçlı optimizasyon problemi kurularak kanat kiriş elemanın optimizasyonu gerçekleştirilmiştir. Kesit geometrisi şekil parametreleri tasarım değişkenleri olarak alınmış, kanat ağırlığının minimizasyonu ve kanadın birinci doğal frekansının maksimizasyonu amaç fonksiyonu olarak tanımlanmıştır. Kanadın hem doğal frekansının arttırılması hem de kütlesinin azaltılması amacıyla çok amaçlı bir optimizasyon çalışması gerçekleştirilmiştir. Çalışma kapsamında kanat iç yapı elemanlarından kiriş elemanının kesit geometrisinin doğal frekans ve ağırlık açısından optimum özelliklere sahip kanat kiriş kesiti tasarlanması amaçlanmıştır. Optimizasyon işlemini gerçekleştirmek için Ansys Workbench ortamında parametrik geometri modeli oluşturulmuş, kanat üzerinde oluşan basınç hesaplanmış, statik analiz ile gerilme ve yer değiştirme, modal analiz ile doğal frekans hesaplanmıştır. Cevap yüzey yöntemi kullanılarak gerçekleştirilen optimizasyon çalışmasında çok amaçlı genetik algoritma kullanılmıştır. Çalışma sonucunda kanat birinci doğal frekansında % 14 artış sağlanırken aynı zamanda kanat ağırlığında yaklaşık %5 hafifleme sağlanmıştır.
İndirgenmiş Grafen Oksit Dolgulu PCL Kompozit Filmlerin Üretimi ve Karakterizasyonu
Authors: Göktaş Meryem , Mindivan Ferda
Published: October 2024

Bu çalışmada, polikaprolakton (PCL) kompozit filmlerin yapısal özellikleri ve biyobozunurluk davranışını incelemek için indirgenmiş grafen oksit (RGO) dolgu maddesi olarak seçilmiştir. RGO dolgusu farklı miktarlarda (ağ.% 0,1, 0,5 ve 1,0) sıvı faz ultrasonik karıştırma metodu ile PCL matriksine ilave edilerek PCL/RGO kompozit filmler hazırlanmıştır. Tüm filmlerde polimer-dolgu etkileşiminin sağlandığı, (110) ve (200) düzlemlerine ait piklerin kristal boyut değerlerinde en yüksek artışın PCL/RGO-1.0 filmine ait olduğu ve aynı filmde düzensiz, kaba yüzey görüntüsü ile birlikte diğer filmlere göre daha az boşluklu bir yüzey görüntüsü sergilediği tespit edilmiştir. Bu çalışma, kontrollü biyobozunurluk davranışı ile biyomalzeme uygulamaları için en düşük gözeneklilik (%26,84) ve yüzey pürüzlülük değerine (Rq 2,23) sahip olduğu belirlenen PCL/RGO-1.0 filmini önermektedir.
A Review On Smart Building And Blockchain Technology
Authors: Savur Duygu , Emekci Şeyda
Published: October 2024

When looking at the history of humanity, continuous change and development have been observed that have been the new needs of people, and solutions can be found for these requirements. The Industrial Revolution is one of these developments and consumption type and limit was changed after this point. This revolution brought the significance of energy production and consumption. Since the construction industry is the field that consumes the most energy, it is very important to control energy in buildings. With this essential, smart building systems which are require sensor data and an internet connection. Thus, a new requirement has emerged regarding the security and storage of sensor data. Blockchain technology is considered a feasible option to address uncertainties related to process tracking, data storage and data transparency. In this paper, the keywords "blockchain technology" and "smart building" found in the literature are examined to discuss what can be used to process data in smart buildings and ensure the security of this data.
A Comprehensive Analysis of Resilient Multivariate Forecasting Models for Steel Plate Price Prediction
Authors: Alsaideen Mahmud , Ertem Zeynep
Published: October 2024

The global steel industry, holding paramount economic significance, is characterized by the inherent volatility of steel prices. Leveraging the reliable weekly steel plate price data from the Commodity Research Unit (CRU), this research employs sophisticated machine learning algorithms to forecast plate prices. The dataset spans from July 27, 2011, to July 5, 2023, encompassing six key predictive factors. Notably, total inventory levels exhibit the highest correlation (0.88) with plate prices, with the finished goods inventory value of heavy machinery emerging as the most influential factor. A comprehensive training regimen is undertaken for machine learning models, incorporating Prophet, XGBoost, LSTM, and GRU. Time Series Cross-Validation is implemented to maintain the temporal order of the data, and a Bayesian optimization function is employed for hyperparameter tuning. XGBoost emerges as the top-performing model, yielding the lowest Mean Squared Error (MSE) of 332.25 and Mean Absolute Error (MAE) of 14.55. Demonstrating superior predictive accuracy, with a Mean Absolute Percentage Error (MAPE) of 0.94% and a Root Mean Squared Error (RMSE) score of 18.06, XGBoost establishes itself as the most effective model in steel plate price forecasting. This outcome underscores the efficacy of advanced machine learning methodologies in navigating the complexities of steel market dynamics for enhanced predictive insights.
A Depressed Bluish-black Plaque on the Shoulder: A Quiz
Authors: Song Xiaoting , Zheng Jiaxing , Yang Shuxia
Published: October 2024

Abstract is missing (Quiz)
Complete Blood Collection-based Systemic Inflammation Biomarkers as a Severity Biomarker in Alopecia Areata: A Cross-sectional Study
Authors: Deng Sihan , Huang Jundong , Li Min , Jian Jia , Shi Wei
Published: October 2024

Previous studies have suggested that alopecia areata (AA) is an organ-specific disease characterized by loss of immune privilege of hair follicles. However, an increasing body of research indicates that it not only affects the skin but may also be accompanied by systemic inflammatory reactions. Therefore, searching for simple and easily available biomarkers to describe the underlying systemic inflammation in AA patients is of great clinical significance. Complete blood collection-based systemic inflammation biomarkers have been shown to be associated with the severity and prognosis of various skin and autoimmune diseases. They involve multiple cell lineages and can reveal different pathways of immune-inflammatory responses. The aim of this study was to investigate the level of complete blood collection-based systemic inflammation biomarkers in patients with AA, and to analyse their relationship with the disease severity. A total of 302 AA patients and 296 healthy controls were included in this study and the neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), systemic immune inflammation index (SII), and white blood cell/lymphocyte ratio (WLR) were calculated. The differences in these indicators between the 2 groups were compared, and the relationship between NLR, PLR, SII, WLR, and the risk of severe AA were analysed. AA patients had higher NLR, SII, and WLR compared with healthy controls (p = 0.004, 0.002, and 0.002 respectively). PLR and SII were higher in the severe AA group compared with the mild-to-moderate AA patients (p = 0.005 and 0.011 respectively). The risk of severe AA increased with the increasing of PLR, SII, NLR, and WLR (p for trend was 0.001, 0.006, 0.022, and 0.021, respectively). The levels of systemic inflammation biomark-ers in AA patients are higher than in healthy people. NLR, PLR, SII, and WLR are risk factors for severe AA, suggesting a close association between systemic inflammation and disease occurrence in AA patients.
Analyticity and Recursion in Multi-Loop Yang-Mills Amplitudes
Authors:   , Pandey Siddharth
Published: October 2024

While much progress has been made in the calculation of two-loop amplitudes in Yang-Mills theory, there remain diﬃculties in scaling existing methods to higher numbers of external gluons. A method of calculating two-loop all-plus Yang-Mills amplitudes using 4 dimensional unitarity and augmented recursion was previously developed that was successful in calculating amplitudes to high gluon multiplicity. This thesis presents the latest developments in extending this method to the two-loop single-minus sector, taking the previously calculated leading in color two-loop ﬁve-point single-minus amplitude as an example. A new technique for calculating the cut-constructible part of this amplitude is presented, with a focus on the ‘pseudo one-loop’ subsector of the cut-constructible part. We calculate this subsector using one-loop reduction methods, and present a new parameterisation that allows for the determination of the coeﬃcients of the one- and two-mass scalar triangle integrals. The bulk of this thesis focuses on the extension of augmented recursion to the calculation of the rational part of single-minus amplitudes. The method is signiﬁcantly extended to include sectors which were absent in previous calculations, and we develop novel techniques to aid in calculating Feynman integrals. Although there are still some unanswered questions, we are able to reconstruct the full rational part of the ﬁve-point amplitude using augmented recursion and universal known properties of scattering amplitudes.
Transformation of the ESG tool for assessing sustainable development
Authors: Miller Alexander E. , Davidenko Lyudmila M.
Published: October 2024

Technological challenges related to the "green" economy, digitalization of business processes, and intelligent manufacturing affect all sectors of the world economy. In this regard, it is important to promptly receive information about the current state of socio-economic systems and timely take environmental, technological, and financial measures for sustainable development. As an object of research, the authors selected analytical models for ESG transformation due to the high probability of environmental, technological deviations from the set goals of sustainable development. The study revealed that the combination of elements of the concept of mitigation of technological challenges significantly actualize the use of specific scientific approaches reflecting the key principles of the open system of "corporate integration space", intellectualization of production, knowledge economy, innovation integration strategy, strategic public administration. The article describes the mechanisms of development of analytical tools to achieve the mission and objectives of the doctrine in achieving carbon neutrality. The study of the adaptation processes inherent in the classical model of company value management to real conditions allowed us to substantiate the prerequisites for ESG transformation, revealing the possibilities of integrating the parameters of the studied economic system in terms of leveling the consequences of technological lag due to the optimization of key production business processes, increasing the capacity of production facilities, promoting a technologically meaningful economy, activating monitoring of the use of modern technologies, including “augmented” reality. Based on the process approach, a result was obtained that reveals new advantages of analytical approaches to modeling ESG tools, expressed in the modernization of "green" projects focused on the transformation of existing technologies. The conclusion is substantiated that technological innovations, in most cases, significantly increase the likelihood of an increase in unforeseen expenses, especially in conditions of a shortage of financial resources, which allows timely making the necessary adjustments and changing the deadlines for the implementation of innovative projects. The article argues the economic feasibility of continuous improvement of ESG tools for assessing sustainable development.
Key aspects of the economic security development in the practice of regional management (part 1)
Authors: Korableva Anna A. , Breusova Anna G.
Published: October 2024

The article presents the results of a study of economic security management practices in the region on the Omsk region example. Management of the economic security of the territory is the basis of its sustainable development. To manage the economic security of regions (ESR), various tools can be used, but the powers of the regions enshrined in federal legislation should be taken into account. However, today the legislation does not contain an installation on mandatory procedures for monitoring, evaluating and managing the ESR. Therefore, in practice, both the authorities of various regions and scientific researchers use various methods for monitoring and assessing economic security. Monitoring and security assessment, which are currently being carried out, can only record the current state of security in the region. There are also no common regional methods and recognized practices for managing the ESR that would take into account the relationship between the strategic directions of the region's security, the results of the security assessment and the decisions made to ensure it. This is a current issue. This is what our research is aimed at. The overall goal of the study, which will be presented in 2 parts, is to develop general directions and approaches to the development of ESR. The task of the first part of the study is to study the barriers to the development of the ESR, due to the interaction of authorities and economic entities. This is an important aspect, because business decisions and government support programs affect the change in the structure of the economy. The types and directions of interaction form the institutional environment for the development of the ESR, and the applied security management practices depend on its qualitative state. The results of the study are a set of problems for the development of the economic security of the region in the future. The practical significance of the study lies in the use of the obtained results for designing a general model of the economic security management system in the region. Part of this system is the institutional environment for interaction between regional authorities and business entities.
Assessment of the implementation of digital transformations in the Northern Territories of the Russian Federation
Authors: Pisarev Ivan V. , Byvshev Vladimir I.
Published: October 2024

The article is devoted to the study of digital transformations in the Northern regions of the Russian Federation. The Northern Territories are distinguished by special natural and geographical characteristics, a harsh climate, rather heavy transport accessibility and point settlement of the population. In this connection, the study of digital transformations in the northern territories is quite an urgent issue. The study suggests the author's methodology for assessing the digital development of the regions of the North through an integral indicator calculated from data from open sources of information. According to the author's methodology, the indicators of digital development of the Northern regions are calculated and individual indicators reflecting the level of digital development of the regions are analyzed. The authors also examine the legislative aspects of the digital development of the Northern Territories and determines the possibilities of digital development of the northern territories to improve the socio-economic situation of the regions. The study determines that most regions of the Northern Territories are characterized by a fairly low level of digital development.