bluuebunny/crossref_metadata_2025_split huggingface dataset:
Machine Learning-Based Buck-Boost Converter Design for Traction Power Centers in Rail Systems
Authors: AKÇAY Mehmet Taciddin 
Published: September 2023

Abstract
Since the traction power energy consumption is at high levels in Rail Systems, the design of the traction power center and minimizing the losses and increasing the system efficiency are important issues. While different designs are used while creating the traction power electrification system, the basic principle is to effectively transfer energy from one point to another. The power transmission system from vehicles to vehicles, from vehicle to traction center or from vehicle to another consumption center develops depending on the developments in power electronics technology, and the efficiency of the system changes according to different topological structures. While the developments in converter, inverter, semiconductor element and control technology constitute important inputs for system performance, it is necessary to create design conditions in harmony with the rail system operation for efficiency. In this study, machine learning-based Buck-Boost Converter circuit design was carried out with real data measurements performed in the field for the power supply system located in the traction centers. With the proposed topology, the efficiency of the power supply system has been increased, gains of the system are compared with the situation where different control methods are used, and the results are presented comparatively.
The Embedded Feature Selection Method Based on Artificial Neural Network Using Gray Wolf Optimizer and Structured Sparsity Norms
Authors: Nemati Khadijeh , Sheikhani Amir Hosein Refahi , Kordrostami Sohrab , Roudposhti Kamrad Khoshhal 
Published: September 2023

Abstract
Feature selection is important in many machine learning applications. We show that it is not necessary to use all features of a dataset to perform the classification operation and obtain a lower classification error that leads to higher accuracy. We can improve the performance of the proposed method by selecting meaningful features and reducing the dimensions of the features vector. Through the result of our experiment, we show that learning certain feature subsets can lead to better performance on a variety of datasets. The process of finding an adequate number of features is usually time-consuming. Thus, we consider the feature selection problem as an optimization problem and leave the solution to meta-heuristic methods. This paper presents an approach to feature selection by using Gray Wolf Optimizer (GWO) algorithm. The two-layer perceptron as a classifier utilizes the features selected by the GWO algorithm in classification operation. The new sparse norm is used to evaluate the GWO algorithm approach. We call this approach GWO-ANN-SSN. To validate the performance of the GWO-ANN-SSN method, we compared it with existing feature selection methods on some publicly available data sets. In all experimental results, the GWO-ANN-SSN algorithm performs better than other approaches.
Primary Vitreoretinal Lymphoma Masquerading as Acute Retinal Necrosis Syndrome, Neovascular Glaucoma, and White Dot Syndromes: A Case Report
Authors: Chai Qiannan , Nie Ziyuan , Du Chunyang , Duan Jialiang , Shang Qingli 
Published: September 2023

Abstract
Background: Primary vitreoretinal lymphoma (PVRL) is a high-grade malignancy of non-Hodgkin lymphoma, with a wide range of clinical manifestations. In this report, we described a case of PVRL initially masquerading as acute retinal necrosis and neovascular glaucoma in the right eye and white dot syndromes in the left eye. The disease was finally diagnosed as diffuse large B-cell non-Hodgkin lymphoma. In addition, we reviewed the current diagnostic methods, multimodal imaging findings, and treatment of PVRL.
Case presentation: A 50-year-old woman presented with blurred vision and redness in her right eye. Funduscopic examination showed severe vitreous opacification with faintly visible hemorrhages and exudates on the retinal surface. As the disease progressed, rubeosis and neovascular glaucoma developed in the right eye. At the same time, fundus examination of the left eye demonstrated multiple yellow-white spots, which are similar to “white dot syndromes”. She was eventually pathologically diagnosed with intraocular lymphoma after right eye enucleation. The left eye stabilized with continuous intravitreal methotrexate injections.
Conclusions: The clinical manifestation of PVRL is often atypical. Multimodal imaging, particularly fundus photography and optical coherence tomography, facilitates appropriate clinical suspicion. Negative cytological testing of the aqueous humor in the anterior chamber may not be sufficient to rule out PVRL. Pathology remains the gold standard for the diagnosis of PVRL.
Rapid intestinal and systemic metabolic reprogramming in an immunosuppressed environment
Authors: Ma Bing , Gavzy Samuel J. , France Michael , Song Yang , Lwin Hnin Wai , Kensiski Allison , Saxena Vikas , Piao Wenji , Lakhan Ram , Iyyathurai Jegan , Li Lushen , Paluskievicz Christina , Wu Long , WillsonShirkey Marina , Mongodin Emmanuel F. , Mas Valeria R. , Bromberg Jonathan 
Published: September 2023

Abstract
Intrinsic metabolism shapes the immune environment associated with immune suppression and tolerance in settings such as organ transplantation and cancer. However, little is known about the metabolic activities in an immunosuppressive environment. In this study, we employed metagenomic, metabolomic, and immunological approaches to profile the early effects of the immunosuppressant drug tacrolimus, antibiotics, or both in gut lumen and circulation using a murine model. Tacrolimus induced rapid and profound alterations in metabolic activities within two days of treatment, prior to alterations in gut microbiota composition and structure. The metabolic profile and gut microbiome after seven days of treatment was distinct from that after two days of treatment, indicating continuous drug effects on both gut microbial ecosystem and host metabolism. The most affected taxonomic groups are Clostriales and Verrucomicrobiae (i.e., Akkermansia muciniphila), and the most affected metabolic pathways included a group of interconnected amino acids, bile acid conjugation, glucose homeostasis, and energy production. Highly correlated metabolic changes were observed between lumen and serum metabolism, supporting their significant interactions. Despite a small sample size, this study explored the largely uncharacterized microbial and metabolic events in an immunosuppressed environment and demonstrated that early changes in metabolic activities can have significant implications that may serve as antecedent biomarkers of immune activation or quiescence. To understand the intricate relationships among gut microbiome, metabolic activities, and immune cells in an immune suppressed environment is a prerequisite for developing strategies to monitor and optimize alloimmune responses that determine transplant outcomes.
Asynchronous Quantum Random Walks
Authors: Harringer Manfred 
Published: September 2023

Abstract
I build random walks on finite graphs Γ(V,E) with vertices V and directed edges E by sequences of randomly selected edges. Edge selection may also be organized by a curve on a torus, observing circuits in both directions of the course at a single circle. The edges trigger state changes of the vertices for particles, bosons or fermions, due to the state spaces at the vertices. As a statistical result, I obtain a quantum canonical ensemble together with a vacuum. There are two kinds of process steps, acceptions and rejections, corresponding to stimulated and spontaneous emissions. Such processes are asynchronous versions of time evolution in quantum mechanics.
THE USE OF CITRIC ACID MODIFIED BACTERIAL CELULLOSE AS AN ENVIROMENTALLY FRIENDLY ADSORBENT
Authors: Mardiana Diah , Suryani Ani Mulya , Kamulyan Budi , Rahma Nur Lailatul 
Published: September 2023

<p><strong>Abstract</strong></p><p>The use of nata de coco as an ester cellulose raw material through esterification using various of carboxylic acids has been widely conducted. In this study, it was used citric acid with three carboxyl groups. This aim research were to determine the optimum reactant composition and to compare the cellulose citrate properties toward bacterial cellulose and commercial ester cellulose. Esterification at mass ratio of nata : citric acid were 1 : 1 up to 1 : 9 were conducting at temperature of 150<sup>o</sup>C. The optimum ester cellulose produced, were then characterized based on the FTIR spectrophotometry, hydrophobicity and degree of crystallinity. Furthermore, the surface area has been determined in order to find out its potency as an adsorbent .The result revealed that reaction using citric acid has affect on chemical structure and hydrophobicity. The increase of hydrophobicity and degree of crystallinity was influenced by citric acid added. On the other hand, it was obtained that cellulose citrate could be develop as an adsorbent.</p><p><span style="text-decoration: underline;">Keyword</span>: <em>cellulose, esterification, citric acid, adsorbent </em></p>
LA OPOSICIÓN A LA LEGALIZACIÓN DEL ABORTO COMO MECANISMO DE CONTROL SOCIAL
Authors: Rodríguez Morán Gerardo 
Published: September 2023

Resumen
Este trabajo se plantea a partir de una perspectiva teórico–conceptual, en la cual se aborda la relación entre dos enfoques que confluyen y forman parte de la agenda de discusión pública en la sociedad contemporánea: el aborto y el control social. Es así, que se examinará desde un enfoque empírico, el porqué de la prohibición del aborto –sobre todo en aquellos países donde no se encuentra legalizada su práctica–. Con esto, se constituye la reflexión sobre un mecanismo que se encuentra orientado a implementar esquemas particulares de control social, en el cual están institucionalizados: patrones culturales, normativos y socio–políticos, que tienden a regular la reproducción, la natalidad, el libre ejercicio de la sexualidad y el derecho de las mujeres a decidir sobre su cuerpo.
Abstract
This paper arises from a theoretical and conceptual perspective in which the relationship between, two approaches converge and form part of the agenda of public discussion in contemporary society is discussed: abortion and social control. Thus, it will be considered from an empirical approach, the reason for the prohibition of abortion, especially in countries where the practice is not legalized. With this, the reflection is a mechanism aimed at implementing specific schemes is social control; which is institutionalized: socio-political, which tend to regulate reproduction, birth, cultural, regulatory and free exercise patterns of sexuality and the right of women to decide about their bodies.
EDUCAR EN MEDIO DE LA BARBARIE: REFLEXIONES Y CUESTIONAMIENTOS
Authors: Betancourt Antony E. 
Published: September 2023

La educación es comprendida como proceso humanizador, de igual forma es reconocida como me­dio de elevación a niveles de mayor conciencia y evolución. Gracias a esta y a muchas más razones la educación es posicionada como elemento fundante de la cultura. Teniendo en cuenta lo anterior, la educación sería un arma eficaz frente a cualquier expresión de crudeza y denigración contra la condi­ción humana, por parte de un individuo o colectivo, pues ella como camino de humanidad brinda las herramientas para alcanzar racionalidad y congruencia en el actuar de los individuos. Pero ¿qué sucede cuando los procesos educativos son desarrollados en escenarios complejos donde reina la barbarie? ¿Qué compromiso tienen las acciones educativas de un país que viven en medio de esta situación? La barbarie como acto esencialmente destructivo y fragmentador de la estructura social merece ser expues­to, reflexionado y denunciado desde el entorno escolar. Educar en medio de la barbarie: reflexiones y cuestionamientos, pretende disertar en torno al impacto que debe generarse en la educación cuando ésta se desarrolla en medio de espacios donde el conflicto, la violación y vulneración de derechos, las extremas muestras de crueldad, la completa pérdida de sensibilidad y consideración ante la condición del otro, se hace más que evidente. Todo este propósito desde el sustento teórico de autores como Adorno, Arendt y Reyes Mate, que ilustran esta oscura y compleja realidad.
Abstract
Education is understood like a humanizing process, similarly, it’s recognized as a tool of quality to con­science and evolution levels. Cause of this, and many more reasons, Education is positioned like the most important factor of culture. Bearing in mind the above, Education would be an effective source facing any expression of rawness and disgrace against the human condition, as individual as collective aspects, because it as a humanity way provides the elements to achieve rationality and congruence into the individuals’ performance. But, what occurs when the educative procedures are developed in difficult settings where the barbarism rules? What commitment do the educational activities of a country which lives in the middle of this situation? The barbaric act essentially as destructive and fragmenting of the social structure it deserves to be exposed reflected and condemned from the school environment. Educating in The Middle of The Barbarism: Reflections and Questionings, it intends to discuss about the impact that has to be promoted in Education when it carries in the middle of areas where conflict, violation, and rights infringements, the wickedness extreme patterns, the sensitivity complete loss and with the condition of the other, it becomes more evident. All this purpose from the theoretical support by the authors such as Adorno, Arendt and Reyes Mate, who illustrate this dark and hard reality.
ANÁLISIS DE LA DESERCIÓN ESTUDIANTIL EN LA UNIVERSIDAD SIMÓN BOLÍVAR, FACULTAD INGENIERÍA DE SISTEMAS, CON TÉCNICAS DE MINERÍA DE DATOS
Authors: Azoumana Kamagate 
Published: September 2023

El presente artículo muestra los resultados del análisis de la deserción estudiantil en la Universidad Simón Bolívar, facultad de Ingeniería de Sistemas, con técnicas de minería de Datos. Se utilizó la herra­mienta Weka agrupando las causas de la deserción en 5 variables que son: Pérdida de semestre, Dificultad financiera, Ingreso al mercado laboral. Otros intereses atraen al estudiante, Indeterminado. La muestra era de 707 sujetos entre los períodos 2007-2012. Se concluye que la causa mayor de la deserción es el factor indeterminado.
Abstract
This article shows the results of the student desertion analysis at the Simon Bolivar University, Faculty of Systems Engineering with data mining techniques. Grouping the causes of desertion in five variables: Loss of semester, Financial Difficulty, Access to the job market, Others interests, Undetermined. A Sample of 707student was chosen from 2007-2012. Using Weka to process these data, the conclu­sion is that the major cause of student desertion is the factor undetermined
DERECHOS SOBRE LA TENENCIA DE TIERRAS Y LA LUCHA DE LA MUJER CAMPESINA EN COLOMBIA
Authors: García García Yadira Esther 
Published: September 2023

Las mujeres campesinas vi?ctimas del conflicto armado en Colombia, representan una parte de la poblacio?n ma?s vulnerable como consecuencia de su ge?nero. Sin embargo, la historia no solo coloca a las mujeres en un estado de debilidad, sino que las ha mostrado protagonistas mediante sus ideologi?as poli?ticas, lo que ha hecho de ellas unas guerreras en materia de derechos, a trave?s de una larga lucha por la libertad e igualdad social entre los hombres. Aristo?teles ubica a la mujer en el mismo estatus del esclavo, pero desempen?ando roles diferentes (proceso de alienacio?n de la mujer frente a su marido, legitimado naturalmente a trave?s de la historia). De esta manera, una forma de dejar este estado de alienacio?n y aplicar la desalienacio?n, es la construccio?n de escenarios educativos, que permitan la participacio?n activa de las mujeres como futuras gobernantes y constructoras de pensamientos hacia el bien comu?n.
Palabras clave: Mujeres campesinas, Conflicto armado, Ideologi?as poli?ticas, Desalienacio?n.
Abstract

Peasant women victims of armed conflict in Colombia, representing a part of the most vulnerable because of their gender. However, the story not only puts women in a state of weakness but the character shown by his political ideologies, which has made them a warrior on rights, through a long struggle for freedom and social equality among men. Aristotle places the woman in the same status of the slave but playing different roles (process alienation of women from her husband, naturally legitimized through history). Thus, a way to leave this state of alienation and apply the alienation is the development of learning scenarios that allow the active participation of women as future leaders and builders of thoughts towards the common good.
Keywords: Peasant women, Armed conflict, Political ideologies, Alienation.
INDIOS Y NEGROS EN LOS INICIOS DE LAS CELEBRACIONES POLI?TICAS EN COLOMBIA: ENTRE LA INCLUSIO?N Y LA SEGREGACIO?N
Authors: Pita Pico Roger 
Published: September 2023

La propuesta central de este arti?culo consiste en analizar la participacio?n de los indios y los negros en las celebraciones mona?rquicas y republicanas realizadas en Colombia. Se intenta demostrar, a trave?s de fuentes documentales y perio?dicos de la e?poca, co?mo el estatus y la condicio?n social y juri?dica de cada uno de estos grupos incidieron de manera notoria en la forma como ellos se vincularon a las ceremonias poli?ticas, tanto en la fase protocolaria como en los entretenimientos. En te?rminos comparativos, del periodo colonial a la Repu?blica fueron muchas ma?s las continuidades que las rupturas aunque no pueden desconocerse algunos avances e inclusiones en la fase republicana. Representaciones de lo indi?gena y el papel protago?nico asumido en algunas celebraciones le imprimieron una nueva faceta que torno? ma?s compleja la participacio?n de estas comunidades e?tnicas en medio de una sociedad altamente fragmentada y jerarquizada.
Abstract
The central proposal of this paper is to analyze the participation of indigenous and blacks in the monarchical and republican celebrations held in Colombia. It tries to prove through documentary sources and newspapers of the time, how social and legal status of each of these groups influenced markedly in how they were linked to political ceremonies, both in protocol phase and entertainments. In comparison, there was some continuity from the colonial period to the Republic but cannot be ignored some progress and inclusions in the Republican phase. Representations of the indigenous and the lead role assumed in some celebrations became more complex the participation of these ethnic communities in a highly fragmented and hierarchical society.
ROL DEL MEDIADOR FAMILIAR: REFLEXIO?N SOBRE LA FORMACIO?N EN COMPETENCIAS COMUNICATIVAS
Authors: Rodríguez-Domínguez Carles , Roustan Marina 
Published: September 2023

La creciente conflictividad en las relaciones sociales llevo? a la Unio?n Europea a la creacio?n de un libro verde (COM 2002/196) para hallar soluciones implementando instrumentos alternativos a la resolucio?n judicial. Por diversas razones se ha advertido un fracaso de las poli?ticas de mediacio?n en Europa entre las que se han destacado deficiencias en la formacio?n. En base a ello, el presente estudio analiza la comunicacio?n en la intervencio?n en mediacio?n familiar, y presenta una revisio?n de las investigaciones sobre la comunicacio?n en la misma para abrir un debate acerca de los criterios necesarios que puedan optimizar la actividad profesional. El objetivo del estudio es una propuesta de criterios elaborada por los autores para tratar de favorecer la formacio?n del profesional en la facilitacio?n de la participacio?n comunicativa en el espacio de la mediacio?n.
Abstract
The actual growing conflict into social relations led the European Union to create the Green Papers (COM 2002/196) to find solutions by implementing alternative instruments to judicial resolutions. For several reasons, it has been shown a failure of the mediation policies in Eu- rope among which it has been highlighted deficiencies in training skills. On this basis, this study analyzes the communication intervention in family mediation and presents a review of the researches about the communication in family mediation to open a discussion on the criteria that can optimize the professional activity. The aim of this study is to propound some criteria developed by the authors to try to promote professional training in facilitating participation in the communicative space of mediation.
CARACTERIZACIO?N Y MOTIVOS PARA DESPLAZARSE EN FAMILIAS VI?CTIMAS DE CONFLICTO ARMADO ASENTADAS EN EL DEPARTAMENTO DEL QUINDI?O
Authors: Andrade Salazar José Alonso , Zuluaga Delgado Cindy Vanessa , Ramírez Valladares Juan Jacobo , Alejandra Ramírez Hurtado María 
Published: September 2023

Esta es una investigacio?n cuantitativa, descriptiva de corte transversal que tiene como objetivo tipificar las caracteri?sticas sociodemogra?ficas y motivos asociados al desplazamiento forzado en 200 familias asentadas en el departamento del Quindi?o en el periodo 2009-2013, para lo cual se aplico? una ficha de caracterizacio?n sociodemogra?fica. El estudio encontro? que la jefatura del hogar recae especialmente en el adulto joven (42 %), mujeres (63,5 %), en unio?n libre (34 %), de escolaridad primaria (50 %), etnia mestiza (87 %), de origen rural (72,5 %), procedentes del Valle del cauca (22 %), Cauca (8,5 %) y Choco? (8,5 %). El 82 % tiene entre 1 y 3 desplazamientos individuales, y el 88 % se ha intradesplazado. El motivo principal es la amenaza de muerte y/o maltrato psicolo?gico (47 %) y la muerte de un familiar (30 %).

Abstract
This quantitative, cross-sectional descriptive research aims to establish the demographic characteristics and reasons related to the forced displacement of 200 families living in the department of Quindi?o in the period 2009-2013, for which a sociodemographic characterization tab was applied. The study found that the leadership of the home is especially on the young adult (42 %), women (63.5 %), with a partner (34 %), primary education (50 %), mixed ethnicity (87 %), of rural origin (72.5 %), from the Valle del Cauca (22 %), Cauca (8.5 %) and Choco (8.5 %). 82 % are between 1 and 3 individual displacements, and 88 % have been intra-displaced. The main reason is the threat of death and/or psychological abuse (47 %) and the death of a family member (30 %).

Resumo
Esta e? uma pesquisa descritiva quantitativa, transversal, que visa estabelecer as caracteri?sticas demogra?ficas e os motivos relacionados com a deslocac?a?o forc?ada de 200 fami?lias que vivem no departamento do Quindio no peri?odo de 2009-2013, para o qual foi aplicado um perfil so?cio-demogra?fico. O estudo constatou que os chefes da fami?lia sa?o principalmente adultos jovens (42 %), mulheres (63,5 %), com um parceiro (34 %), ensino prima?rio (50 %), cor parda (87 %), de origem rural (72,5 %), a partir do Valle del Cauca (22 %), Cauca (8,5 %) e Choco (8,5 %). 82% te?m entre 1 e 3 deslocamentos individuais, e 88 % se deslocaram internamente. A principal raza?o e? a ameac?a de morte e / ou abuso psicolo?gico (47 %) e a morte de um membro da fami?lia (30 %).