bluuebunny/crossref_metadata_2025 huggingface dataset:
Pedagogía de la tierra, hacia la resignificación de la práctica docente
Authors: Luna-Alfaro María de Lourdes , Castillo-Castro Belem , Aranda-Roche Rossana
Published: March 2022

En su proceso de formación, el profesor rural ha ido configurándose mediante la práctica, las formas de vida de la comunidad, el proceso académico de su disciplina y la formación pedagógica que ha recibido. Todo ello en experiencias particulares, tanto en tiempo, como en trayectoria académica, lo que evoca a la complejidad para comprender y revisar al docente desde lo particular, a partir de ello, generar procesos formativos articuladores con el entorno, en el contexto de aplicación y de implicación. En este estudio se propone a la ecopedagogía como modelo pedagógico para la formación del profesor de Misiones Culturales, pues lo reconfigura con nuevos elementos de vida, que enriquecen su persona, fortalecen sus valores, le dan principios articulados entre la escuela, el contexto comunitario, y la vida; así mismo, enriquecen su práctica con nuevos elementos de reflexión a partir de las nociones que dan sentido a la práctica pedagógica, que lo reconcilia con la tierra y que le da un nuevo rumbo a su existencia. Como un aporte de este estudio, se presenta la aplicación de círculos de fuego, como un recurso metodológico para la reflexión y planteamiento de compromisos del docente de Misiones Culturales, a partir del cual, se proponen nociones desde una mirada interdisciplinaria, articulando las ecologías desde el paradigma de la complejidad con la ecopedagogía, contextualizadas en las necesidades formativas del profesor misionero.
El desarrollo de competencias genéricas a partir de la implementación de danzas folklóricas
Authors: Hernández-Kuepiz Raquel , Ramón-Santiago Pedro , Pérez-Landero Adriana Esperanza
Published: March 2022

El presente trabajo es resultado de una investigación que se realizó durante todo el ciclo escolar 2018-2019. La finalidad del estudio fue promover, entre los estudiantes del Bachillerato Intercultural (BI), del Estado de Tabasco el interés y la motivación por realizar actividades folklóricas que les permitan, entre otras, mantener un buen estado emocional, facilitar su capacidad comunicativa y valorar su identidad cultural.
El acercamiento empírico se llevó acabo en los dos únicos Bachilleratos Interculturales que existen en Tabasco: el No.1 localizado en el Municipio de Nacajuca y el No. 2 en Macuspana. El abordaje metodológico fue a través del paradigma cuantitativo, el tipo de investigación fue descriptivo-exploratorio. La población objeto de estudio estuvo constituida por 145 alumnos de ambos planteles. Los instrumentos empleados para la recolección de información fueron un cuestionario y observaciones “in situ”. Entre los hallazgos más significativos se encontró que los alumnos que participan en los talleres de danza folklórica muestran una actitud participativa en el aula, son más sociables, se inhiben menos y muestran mayor interés y motivación en las clases. Asimismo, se percibe un mayor aprecio por su identidad cultural.  
Palabras Clave: Competencias genéricas, Danza, Educación Intercultural, Educación media superior
El Sistema de Alerta Temprana (SISAT) para disminuir el abandono escolar en las Escuelas Primaria Rurales de Tabasco
Authors: Correa-Carrera Heidi karina , Ponce-Martínez Julio César
Published: March 2022

La investigación tiene la pretensión de proponer al SISAT como estrategia de alerta temprana para disminuir el abandono escolar en las escuelas rurales de Tabasco. Aquí se buscó visualizar los principales factores que provocan el rezago escolar donde los alumnos pierden el interés desde el inicio de su ciclo escolar muchas veces propiciado por falta de compromiso de los docente.
SUCCESSFUL REVASCULARIZATION PROCEDURE IN AN IMMATURE PERMANENT NECROTIC SECOND LOWER MOLAR: A CASE REPORT WITH 4.5-YEARS FOLLOW-UP
Authors: Heck Luana , Weissheimer Theodoro , Duarte Marco Antonio Hungaro , Vivan Rodrigo Ricci , Alcalde Murilo Priori , Rosa Ricardo Abreu da , Só Marcus Vinicius Reis
Published: March 2022

Background: Infection control is mandatory for revascularization procedures, enabling to eliminate patient's clinical symptoms and signs. Despite presenting a complex morphology when compared to anterior teeth, if a strict disinfection protocol is adopted and the revascularization procedure's biological principles are followed, the therapy can be successful in molar teeth. Methods: This case report aims to present a clinical case of successful revascularization in an immature permanent necrotic second lower molar. Clinical decisions and explanations regarding possible mechanisms related to the treatment's success in a tooth with complex morphology are discussed. Results: Revascularization procedures were performed on a 12-year-old male patient diagnosed with symptomatic periapical periodontitis in a tooth 37. The case highlights the need for infection control and biological principles that surrounds the success of this therapy. Follow-up times presented in this case were six months, 1, 2, 4 and 4.5-years, respectively. Continued root development was observed, and the tooth remains intact and without symptoms. Conclusion: The association of infection control and the biological principles of revascularization procedures allow the maintenance and continuation of tooth development, even when these present complex morphologies.
EVALUATION OF ENDODONTIC FILES USED BY UNDERGRADUATED STUDENTS’ CONTAMINATION, AFTER CLEANING AND STERILIZATION
Authors: Magalhães Ketillyn Da Silva , Gomes Elklys , De Araujo Letícia , Goulart Taynara Santos , Schuld Daniela Peressoni Vieira , Almeida Josiane De
Published: March 2022

Introdução: Um protocolo completo de descontaminação das limas endodônticas, antes da esterilização, é extremamente importante. As retenções existentes nas limas dificultam a assepsia e a limpeza inadequada interfere no processo de esterilização. Assim, o objetivo deste estudo foi avaliar a contaminação de limas endodônticas utilizadas por alunos de graduação da Universidade do Sul de Santa Catarina (Unisul), após o processo de limpeza e esterilização. Materiais e Métodos: Participaram da pesquisa alunos do curso de graduação em Odontologia do 6º ao 10º período da Unisul, unidade de Pedra Branca. As limas endodônticas, calibres # 40, # 45 ou # 50, foram coletadas da caixa metálica estéril e incubadas em meio de cultura em caldo, a 37ºC, em aerobiose. Após 48 horas, o meio de cultura foi avaliado quanto à turbidez, que indicaria a contaminação do instrumento. O número total de amostras contaminadas para cada período foi computado e os dados analisados estatisticamente pelo teste do qui-quadrado (α = 5%). Resultados: 98,46% das limas estavam estéreis. Apenas 1 arquivo, de um aluno do 10º período, apresentou contaminação. Não houve associação entre a presença de contaminação e o tempo de evolução (P> 0,05). Conclusão: O processo de limpeza e esterilização das limas endodônticas está sendo realizado de forma eficaz por alunos do curso de graduação em Odontologia do 6º ao 10º período da Unisul, unidade Pedra Branca. mostrou contaminação. Não houve associação entre a presença de contaminação e o tempo de evolução (P> 0,05). Conclusão: O processo de limpeza e esterilização das limas endodônticas está sendo realizado de forma eficaz por alunos do curso de graduação em Odontologia do 6º ao 10º período da Unisul, unidade de Pedra Branca. mostrou contaminação. Não houve associação entre a presença de contaminação e o tempo de evolução (P> 0,05). Conclusão: O processo de limpeza e esterilização das limas endodônticas está sendo realizado de forma eficaz por alunos do curso de graduação em Odontologia do 6º ao 10º período da Unisul, unidade Pedra Branca.
Restorative materials for restorations of non-carious cervical lesions: an overview
Authors: Boehm Francielly Censi , Tanaka Caio Junji
Published: March 2022

Objective: To review the available scientific literature on the restorative treatment of non-carious cervical lesions; in particular, the restorative materials that present optimal performance in this type of clinical situation.  Methods: A literature review was performed using Pubmed search engine with the aim of determining the ideal restorative material for restorations of non-carious cervical lesions.            Results: Beautifil II (Shofu INC.) restorative material showed satisfactory results in terms of fracture resistance, flexural strength and excellent aesthetics, in addition to components that act as anti-cariogenic, anti-plaque and oral pH balance. The Clearfil SE Bond adhesive (Kuraray NORITAKE) showed in clinical research the highest bond strength rate compared to other adhesive systems available in the dental market.      Conclusion: Non-carious cervical lesions are multifactorial lesions that require the professional knowledge to conduct the treatment effectively. The Shofu Beautifil II showed the best results in fracture resistance, flexural strength and excellent aesthetics, it has anticariogenic potential, anti-plaque bacteria and contributes to the oral pH balance. The Clearfil SE Bond adhesive showed the highest retention rate among its competitors. Keywords: Restorative materials; non-carious cervical lesions; class V
Impacto de la política monetaria sobre las metas explicitas de inflación en el Perú, 2003 – 2015
Authors:   ,   Universidad San Ignacio de Loyola, Lizarraga Alania Jackelyn Stefany
Published: March 2022

En el presente trabajo se analiza el impacto y la significancia de los estimadores de la política monetaria sobre la gestión de las metas explicitas de inflación en el corto y largo plazo, para el análisis en cuestión se usarán las siguientes variables, la variable, tasa de referencia, demanda interna: La emisión primaria. La metodología será realizará a través de un modelo VAR, acompañado de la examinación de los retardos óptimos y longitud del VAR para determinar que los residuos del VAR sean ruido blanco; y luego establecer una relación con un modelo VEC con una ecuación co-integrada. Los resultados encontrados indican que la tasa de referencia tiene efectos en el largo plazo frente a la inflación, ya que en el análisis del modelo VEC, obtenemos que en los primeros rezagos diferenciados de la inflación y de la tasa de referencia sean manejados por los desequilibrios percibidos y aseguran una convergencia a la posición de equilibrio en un largo plazo
Mejora del plan de mantenimiento para incrementar la disponibilidad de unidades en una empresa de alquiler de vehículos
Authors:   ,   Universidad San Ignacio de Loyola, Mori Palacios Adrián Paolo
Published: March 2022

Esta investigación busca explicar lo importante que es para las organizaciones del rubro del alquiler de vehículos, sobre todo en el sector minero, tener un elevado índice de disponibilidad de unidades vehiculares, ya que tener índices de disponibilidad bajos, impacta negativamente en las ganancias de la empresa. El problema principal que se encontró en la empresa, es que la flota de camionetas Toyota Hilux, no cuenta con una planificación para realizar el mantenimiento a sus unidades, lo cual genera consecuencias como la pérdida de ingresos por tener vehículos indisponibles, frecuencia de fallas elevadas en diversos equipos del vehículo, entre otros. La propuesta fue desarrollar e implementar una estrategia de mantenimiento basado en la Metodología del RCM, por un equipo de personas del área de mantenimiento de la empresa para así, elaborar un plan de mantenimiento orientado a las condiciones ambientales que están expuestos los vehículos en los socavones mineros y aumentar la disponibilidad de las unidades vehiculares. Asimismo, esta investigación ha sido desarrollada en 8 capítulos.
Tratamiento de agua de pozo por osmosis inversa para usos en la industria agrícola
Authors:   ,   Universidad San Ignacio de Loyola, Contreras Lévano Kenyi Geancarlos
Published: March 2022

La presente investigación tuvo como objetivo principal obtener agua tratada mediante el tratamiento de Agua de Pozo por Osmosis Inversa para su empleo en el proceso de lavado de frutas y hortalizas en una empresa agrícola. La empresa agrícola dispone de agua de pozo, que no reúne las condiciones necesarias para ser usada, por lo que requiere de una planta de osmosis inversa (OI) para tratar el agua salobre de pozo que se encuentra dentro de sus instalaciones. Para cumplir con los estándares de agua potable para el procesamiento de frutas, se realizó un pretratamiento del agua cruda y el post-tratamiento de la salmuera, así como de agua del producto. El agua de pozo tuvo un contenido de Sólidos totales disueltos de 3252 ppm, y mediante el tratamiento previo del agua de pozo con cloro, Metabisulfito de sodio fue reducido hasta un valor de 1500 ppm, de esta forma alimentó el sistema de Osmosis Inversa y ayudó a la conservación de las membranas del equipo de ósmosis inversa. Luego de la salida del permeado de la planta de tratamiento de osmosis inversa (OI) más la derivación del valor de STD fue reducida hasta 15 ppm. Finalmente, el valor de STD a la salida del sistema de Osmosis Inversa como agua potable fue 495.51 ppm. De acuerdo al estudio de la empresa agrícola se concluye que la planta de O.I. aplicado al agua de pozo permitió obtener el agua con las propiedades físico-químicas deseadas para los procesos de Lavado de frutas y hortalizas.
Pre-operative and post-operative atrial fibrillation in patients undergoing SAVR/TAVR
Authors: Tummala Vineet , Kuruvilla Annet , Yaligar Ashutosh , Agha Sohaib , Bilfinger Thomas , Shroyer A. Laurie
Published: March 2022

Atrial fibrillation (AF) is a common preoperative comorbidity and post-operative complication associated with cardiac surgery and is recognized as a significant predictor of adverse clinical outcomes. This review aims to highlight the current literature regarding the incidence, risk factors, and outcomes of atrial fibrillation in patients undergoing surgical aortic valve replacement (SAVR) or transcatheter aortic valve replacement (TAVR) procedures. A literature search of relevant articles was conducted via PubMed, Medline, and EMBASE. Pre-existing AF is seen in 6.3%-35.2% of SAVR patients and 15.7%-48.9% of TAVR patients and is associated with increased risk of mortality (OR = 2.2) and stroke (OR = 5.9). Postoperative AF (POAF) is more common after SAVR and in patients with hemodynamic instability. The rates for POAF range from 11.1%-84% following SAVR and range from 3.0%-55.6% following TAVR. In-hospital mortality (7.8% vs. 3.4%; P < 0.01) and stroke (4.7% vs. 2.0%; P < 0.01) are higher in the POAF group. POAF can be prevented via prophylactic antiarrhythmic medications and atrial pacing. Therapeutic anticoagulation is recommended as it reduces the risk of thrombotic complications following SAVR and TAVR procedures in the setting of POAF. Compared to those not on anticoagulant therapies, patients on anticoagulation have decreased rates of stroke (1.7% vs. 5.5%) and fewer 30-day thrombotic complications (3% vs. 40%). These preventive measures are essential as POAF is associated with more thromboembolic events, longer hospital stays, and higher overall morbidity and mortality rates.
SB Knife Jr: characteristics and tips on how to use
Authors: Kuwai Toshio , Tamaru Yuzuru , Kusunoki Ryusaku , Ishaq Sauid
Published: March 2022

Widespread adoption of colorectal endoscopic submucosal dissection (ESD) in clinical practice is lagging despite the peer evidence that it permits en bloc resection of large lesions that can be curative and facilitate pathological staging, thereby improving management. Limited adoption of colorectal ESD is likely due to technical challenges and a steep learning curve. Most conventional ESD devices are used without fixing the target, making them difficult to maneuver and thus creating a potential risk of perforation. Comparatively, a scissor-type knife, such as the SB Knife Jr, enables grasping of the target tissue, facilitating controlled dissection of tissue being held between the blades. This potentially prevents unexpected muscular layer injury. Colorectal ESD with the SB Knife Jr does not require complex endoscopic maneuvering or advanced skills for safe ESD. Since the incision and dissection procedure using the SB Knife Jr is different from that of conventional ESD knives, familiarization with its features is vital. In this review, we focus on the use of the SB Knife Jr for colorectal ESD. The basic colorectal ESD procedure using the SB Knife Jr consists of grasping, pulling, and cutting. By repeating these steps, circumferential incision, submucosal dissection, and hemostasis can be performed with a single device. For incision and dissection, a circumferential mucosal incision is performed similar to “cutting paper”. Submucosal dissection is performed with the image of “connecting the dots at the appropriate dissection depth”. The SB Knife Jr is useful as a secondary device in challenging ESD procedures, and surgeons should master its use.
Emerging mechanisms of immunotherapy resistance in sarcomas
Authors: Florou Vaia , Wilky Breelyn A.
Published: March 2022

Sarcomas are a heterogeneous group of over 150 mesenchymal neoplasms of bone and soft tissue. Clinical prognosis remains poor in the metastatic and refractory setting, despite treatment with traditional chemotherapies. A subset of sarcoma patients can exhibit remarkable responses to novel immune therapies; however, most patients will not respond. Emerging data from genetic and transcriptomic datasets suggests that patients who are resistant to checkpoint inhibitor monotherapy may have low expression of immune-related genes, suggesting that the sarcoma was not sufficiently immunogenic to trigger or maintain an immune response to generate tumor-specific immune effector cells. In this review, we discuss the emerging data surrounding potential mechanisms of resistance, including various biomarkers explored in clinical trials of immune therapy for sarcomas. We also review future directions in clinical trials that are focused on boosting tumor immunogenicity to improve the activity of checkpoint inhibitors, as well as adoptive cellular therapy approaches to bypass deficiencies in neoantigens or antigen presentation.
Internalisasi Nilai-Nilai Karakter pada Anak Usia Dini di Era Pandemi Covid-19
Authors: Nugroho Puspo , Inayah Faiq Zahrotul , Musdalifah Novi Linda
Published: March 2022

This study aims to find out how the teacher’s efforts to internalize character values in early childhood during the covid-19 pandemic at Masyithoh Cebolek Margoyoso Pati Kindergarten and the problems they face. In its implementation, it uses a qualitative case study approach with data collection techniques through observation, interviews, and documentation. Research subjects include teachers and literature searches. The results showed that the first; character values instilled in early childhood consist of 18 character values as referred to by the Ministry of Education and Culture, second; teachers’ efforts to internalize character values during the Covid-19 pandemic through several ways including a) continuous habituation, b) application of blended learning systems, c) application of multiple methods in every learning and d) strengthening of parenting parents offline and online. Third; the emergence of problems in the implementation of internalization such as the lack of responsiveness of parents in assisting learning, technological stuttering, inadequate network availability, loss of children’s independence due to excessive parental assistance, limited parental assistance time. All of these problems are dealt with by forming a communication platform in the form of a parent association as a medium for sharing, communicating, and sharing information and experiences.
(Mis)communication? Social listening and the exclusion of marginalised voices
Authors: Scott Irene
Published: March 2022

This article aims to contribute to the growing scholarship on the use of social media by humanitarian organisations in a crisis. Although social media’s role in times of crisis has been rigorously studied, much of this work looks at the distribution or collection of information by first-responders or relief organisations. However, there is a growing interest in the analysis of social media content to understand community perceptions and to guide public health and risk communication interventions. This article aims to explore some key limitations of data collected using Social Media Analytics (SMA) tools in fairly representing community-wide perceptions. Through a review of ‘social listening reports’ produced by UN bodies and international aid organisations, this article will explore whether these data deficiencies are fairly represented. This article concludes that while there are many well documented limitations in the use of social media discourse to holistically represent community perceptions, these limitations are not adequately discussed in the reporting produced from this data. Consequentially, users of this analysis cannot adequately weigh the quality of the data when using it to influence policy decisions.
Towards real-world brain-computer interface: The BASIL project
Authors: Mouček Roman , Vařeka Lukáš , Brůha Petr , Ježek Petr , Mautner Pavel , Holečková Irena , Summer Johannes , Lopuszanski Peter
Published: March 2022

Affordable brain-computer interfaces (BCIs) working outside the laboratory environmentare still rare. Their most limiting factors include low classificationaccuracy, information transfer bit rate, low variability of used approaches, andcloseness of the hardware and software components of the system. The presentedBASIL project has focused on designing, developing, and testing an affordableBCI system built on low-cost hardware and open-source software components.It provides people with motor impairments with an opportunity to control theirbasic home environment.The concept of the BASIL prototype follows the best practices that areknown within the construction of BCI systems, adds the concept of the cloudfor remote BCI computations, relies on testing and customization of the wholesystem to the needs of individuals, and focuses on the solution affordable forordinary users. The core components of the BASIL project solution includehardware components for signal acquisition and software components for localexecution of online BCIs.The BASIL system was tested on ten participants in laboratory conditionsusing various BCI paradigms. We failed to evoke a reliable P300 componentwith eight-trial averages. Eyes blinks, alpha activity, and steady-state visuallyevoked potentials were clearly observable. Dry electrodes with long pins werepreferred by most users. Out of ten participants, six could control the systemonline, achieving more than 70 % accuracy.The results show that a successful BCI system can be built on low-cost hardwarefor EEG signal acquisition and amplification. The benefits and weaknessesof known BCI paradigms for such a system have been identified. The currentsolution, the affordable BASIL BCI system prototype, is prepared for furthercommunity development and testing.
Evaluation of Comprehensive Treatment Effect of Geotechnical and Ecological Engineering for Debris Flow: Case of Wenchuan County, Sichuan Province
Authors: Zhang Wentao , Liu Jinfeng , Li Daoling , You Yong , Yang Huaquan
Published: March 2022

As a crucial link in debris flow disaster control, control engineering can be divided into geotechnical engineering and ecological engineering. Geotechnical engineering is less affected by climate and can play an immediate role in the treatment of debris flow in a short time. Ecological engineering has obvious regulating effect on surface runoff and erosion. Furthermore, there are few discussions on comprehensive treatment effect between geotechnical engineering and ecological engineering for debris flow. Therefore, taking the debris flow gullies with control engineering implemented in Wenchuan area of Sichuan Province as the research object, this paper puts forward an evaluation method of treatment effect comprehensively considering the geotechnical engineering and ecological engineering. It is mainly based on the impact of engineering on the formation conditions of debris flow and the damage of projects. The comprehensive treatment effect of geotechnical and ecological engineering for debris flow is analyzed. The corresponding evaluation indexes are extracted, including 5 first-class evaluation indexes such as landform factor and water source factor, as well as 11 second-class evaluation indexes such as the peak flow reduction rate, the sediment retention ratio and the LAI ratio. The Fuzzy-AHP method is used to establish the evaluation model of treatment effect. The evaluation results are graded. It is considered that the treatment effect of other debris flow gullies is above medium except that two gullies is poor. The evaluation results are consistent with the actual investigation, which provides a reference for the control of debris flow in this area.
Molecular characteristics of the full-length genome of occult hepatitis B virus from blood donors in China
Authors: Wang Min , Xu Ru , Huang Jieting , Liao Qiao , Tang Xi , Shan Zhengang , Zhong Huishan , Rong Xia , Fu Yongshui
Published: March 2022

Background: The characteristics of a large sample size of the full-length genome of occult hepatitis B virus (HBV) infection (OBI) have not been extensively explored in China. Methods: Voluntary blood donors who were HBsAg-negative/HBV NAT-positive (HBsAg−/HBV NAT+) were identified by blood screening and recruited. Blood samples were tested for HBV serologic markers, viral loads, and PCR to identify OBI. HBV full-length genomes were obtained by amplifying two fragments using nested PCR. The characterization of OBI strains was based on sequence analyses compared with HBsAg+ strains obtained from the same donor population.Results: Of the 50 full-length genomes of 172 identified OBI strains, 33 were classified as genotype B (OBIB) and 17 strains as genotype C (OBIC). Significantly higher nucleotide diversities were observed in the Pre-S2/S promoter region (SP2) and core upstream regulatory sequence (CURS) in OBIB than in their HBsAg+ controls (P < 0.05). Both OBIB and OBIC showed higher amino acid (aa) diversities in Pol and Pre-S/S regions than their controls (P < 0.05). In addition, 19 novel OBI-related mutations were found spanning the four open reading frames (ORFs) of the HBV genome. Four novel deletions and one novel insertion were also found in OBIC strains. Conclusion: Several novel OBI-related mutations spanning the four ORFs of the virus were identified by characterizing a large sample size of the full-length OBI genome, which may affect the production of HBsAg and contribute to the occult infection of HBV.
New Evidence of Changes in Students’ Achievement Motivation in the Context of the COVID-19 Pandemic
Authors: Smith Jonathan , Guimond Fanny-Alexandra , St-Amand Jérôme , Fitzpatrick Caroline , Bergeron Julie , Gagnon Mathieu
Published: March 2022

In an article published early in 2021, we shared results indicating that expectancy (i.e., competence beliefs) and value (i.e., interest in learning, utility value, mastery and performance goals) perceptions among a sample of 90 French Canadian students (Mage = 14.81) in grades 9 and 10 remained at similar levels from few weeks before the first wave (January 2020) to the second wave (November 2020) of the COVID-19 pandemic. One perception (i.e., interest) even improved, suggesting that, after experiencing a confinement, students re-approached in-class activities with enthusiasm. To determine if this pattern of results remained the same as the pandemic persisted, an additional measurement has been performed during the third wave. Analysis with this additional data point revealed that interest, utility value and mastery goals ended up declining. These new data suggest that, ultimately, this pandemic has negative effects on students’ motivation, even if they keep benefiting from in-class activities.
Multi-step forecasting of the Philippine storm frequencies using Poisson Neural Network
Authors: Asaad Al-Ahmadgaid B.
Published: March 2022

The paper aims to forecast the Philippine storm frequencies using nonlinear Poisson model. More specifically, the nonlinear kernel of the model is defined by the Artificial Neural Network (ANN) with one hidden layer and at least two output neurons. The model is trained to simultaneously forecast two semesters ahead for a given input. Further, the covariates studied were the Average Sea Surface Temperatures in the NINO3.4 region (5°-5°S, 170°-120°W), and the Average Sea Surface Temperatures in the eastern pole (0°10°S, 90°-110°E) of the Dipole Mode Index. The data, taken from the Japan Meteorological Agency’s Regional Specialized Meteorological Center, with time points running from 1950 to October 2021, is modeled at a semester-level granularity. The estimation is done using Maximum Likelihood Estimation by minimizing the negative log-likelihood function. Further, the proposed model is studied for different activation functions and different number of hidden neurons. Lastly, out of the 12 candidate models, the best model captures well the characteristics of the data both in terms of the point forecast and the associated uncertainties.
Multilayer Perceptron-based Predictive Model for the Reconstruction of Missing Rainfall Data
Authors: Narimani Roya , Jun Changhyun , De Michele Carlo , Gan Thian Yew , Nezhad Somayeh Moghimi
Published: March 2022

The quality and completeness of rainfall data is a critical aspect in time series analysis and for prediction of future water-related disasters. An accurate estimation of missing data is essential for better rainfall prediction results. Multilayer perceptron (MLP) neural networks have been applied to solve stochastic problems in data science. This study suggests a novel approach for estimating missing rainfall data using MLP neural networks based on three configurations that are represented by the monsoon season (MS), non-monsoon season, and non-seasonal variation. For this purpose, a mathematical model was created to analyze and predict the time series of daily rainfall data in Seoul, South Korea. Missing rainfall data were reconstructed using the rainfall data of the other five stations after removing rainfall data from station number two in three time periods. The results of this study indicate that the new architecture of the MLP can accurately predict the missing rainfall data, particularly in the MS configuration when using only the rainfall data obtained during the MS. The performance of the proposed model was tested using the following evaluation criteria: root mean square error, mean absolute error, correlation coefficient, mean absolute deviation, mean absolute percentage error, and standard deviation. The confusion matrix showed values of 89, 83, and 92% for accuracy, recall, and precision, respectively. This indicates that the proposed model can effectively perform rainfall data reconstruction and predict missing rainfall data accurately when the length of the statistical period is limited to the MS with a high volume of rainfall.
Chronic Stressors, Coping Strategies, and Depressive Symptoms: A Comparison across Older Age Groups
Authors: Sowan Wafaa , Rutin Renana , Cohen Miri
Published: March 2022

Background: Late-life depression is a prevalent mental health problem among older adults. Variations may exist in the intensity of chronic stressors experienced by people in different older age groups and their effects on depressive symptoms.Aim: To examine differences among older adults by age group in the experienced intensity of chronic stressors in relation to depressive symptoms and assess the mediating role of disengaged and engaged coping strategies.Methods: Participants were 114 older adults. The sample was divided into three age groups: 65–72, 73–81, and 82–91. The participants completed questionnaires on coping strategies, depressive symptoms, and chronic stressors. Moderation and mediation analyses were conducted.Results: The lowest levels of depressive symptoms were in the young-old age group and the highest levels were in the oldest-old age group. The young-old age group used more engaged and less disengaged coping strategies than the two other groups. The association between intensity of chronic stressors and depressive symptoms was stronger in the two older age groups compared to the youngest (moderating effect of age groups). The association of stressor intensity with depressive symptoms was mediated by disengaged coping, whereas engaged coping was not associated with depressive symptoms.Conclusion: Differences exist in the relationships among chronic stressors, coping strategies, and depressive symptoms by age groups in the older adult population. Professionals should be aware of these differences between age groups in depressive symptoms and the impact of stressors and coping strategies on depressive symptoms in different older adult age groups.
Minimally Invasive Plate Osteosynthesis (MIPO) for Distal Humeral Fractures – Small Incisions, Good Result
Authors: Hofmann Valeska , Deininger Christian , Diepold Julian , Moursy Mohamed , Birke Marco , Wichlas Florian
Published: March 2022

Background: The indication for minimally invasive plate osteosynthesis (MIPO) recently includes articular fractures. The goal of this study was to evaluate the feasibility of the MIPO technique for extra- and intra-articular distal humeral fractures.Methods: The feasibility of the MIPO technique was tested on 8 cadaveric elbows.The four surgical approaches tested were: a 20 mm ulnar incision, a 20 mm dorso-radial incision, and two for the olecranon osteotomy (A and B). The surgical incision A was 40 mm right on the osteotomy level of the olecranon, and B was an extension of the radial incision towards the osteotomy of the olecranon (80 mm).The four approaches were tested on 4 extra-articular (AO 13 A3) fractures and 4 intra-articular (AO 13 C3) fractures.Results: Reduction and plate fixation of all distal humeral fractures (8 cadaveric), with and without osteotomy, was feasible. But while approach A showed adequate intra-articular fracture control and reduction, approach B was too extensive to fulfill MIPO criteria. Nevertheless, both olecranon approaches were equal.Conclusion: The MIPO technique for reduction and plate fixation in distal humeral fractures is feasible.Level of Evidence: As a feasibility study, this is not clearly classified into a Level of Evidence. It corresponds most closely to level IV.
Early CT to detect posterior pelvic ring involvement, in fragility fractures of the pelvis, has no significant impact on outcome: a retrospective cohort study
Authors: Putzeys Guy , Dekeyser Thomas , Garré Patrick , Pottel Hans , Chesser Tim
Published: March 2022

Background
Early CT of acute fragility fractures of the pelvis (FFP) in the elderly allows evaluation of the posterior pelvic structures. This improves classification of these injuries, compared to plain radiographs but the contribution of this knowledge to clinical decision making remains unclear.
Objectives
Does early CT influences treatment and can it predict outcome and treatment failure?
Methods
A retrospective cohort study of 320 patients aged over 65 years diagnosed with an acute fragility fracture of the pelvis, at the emergency department of a single, level-one trauma centre. Data were retrieved from the German DGU Pelvic Injury Registry between 2009 and 2016. Fractures were classified according to the Tile classification. Statistical analysis compared the subgroups including radiograph only (X-RAY), CT with isolated pubic rami fracture (CTia) and CT with combined posterior pelvic fracture (CTcp).
Results
There were 285 female (89%) and 35 male (11%) subjects with a mean age of 83 years (range 65–102). 279 patients (87%) were living at home. 157 patients (49%) of the cohort had a CT scan showing 32 type A (20%); 114 type B (73%) and 11 type C (7%) fractures. 77% of patients living at home returned home and 17% moved to a nursing home, after discharge from the hospital. Mortality rate during hospitalisation was 5.0% and 14% at one-year post-trauma. Secondary fracture displacement occurred in 30%. Primary surgery was performed in two cases (1%); secondary surgery in 6 cases (2%). There was no significant association between subgroup (X-RAY, CTia, CTcp) and change in residential status (p = 0.98), complications during hospitalisation (p = 0.62) and mortality rate during admission (p = 0.94) and at 1 year (p = 0.89). A significant increased median length of stay was observed comparing subgroups CTcp (22 days) with subgroups CTia (15.5 days) and X-RAY (17 days) only. Secondary displacement was significantly higher in subgroup CTcp (p = 0.0403) but secondary displacement had no impact on complications nor mortality rate.
Conclusions
Our data suggest that early CT in patients with acute fragility fracture of the pelvis, in order to detect posterior lesions, does not add clinical useful information to guide treatment or affect outcome.
Relationship Between Bone Mineral Density and Related Factors in Puberty: a 4-year Longitudinal Survey
Authors: Akaike Arata , Suzuki Daisuke , Okuyama Shinya , Kudo Yutaro , Shimizu Hiroyasu , Takanashi Saya , Makino Kohei , Yokoyama Junichi , nakaji Shigeyuki
Published: March 2022

Bone fragility is a major factor in frail locomotive syndrome. For this fundamental measure, it is important to understand the changes in puberty, where bone metabolism is most active.The subjects were 277 boys and girls who participated in the Iwaki Health Promotion Project from 2011 to 2015 in both the fifth grade (10th/11th y.o) and the third grade of junior high school (14th/15th y.o). Bone mineral density and bone metabolism-related factors (physique and bone metabolism marker) during 4 years of puberty were examined. As for the physique at 10th/11th y.o, all factors were correlated with the bone density at 14th/15th y.o in boys and in girls, height, body muscle ratio, and grip strength value were correlated. In the 4-year rate of change, there was a positive correlation between height, body muscle rate, and bone mineral density in boys, but not in girls. For both boys and girls, a positive correlation was found between the physique (height, body muscle ratio, grip strength) in 10th/11th y.o, bone density at 14th/15th y.o, and bone metabolism markers.It is important to increase the peak bone mass: and prevent bone fragility by building a sufficient physique for boys (14th/15th y.o) and girls (10th/11th y.o).
Impact of Phacoemulsification versus combined Phacoemulsification-goniotomy on intraocular pressure in primary open-angle glaucoma patients
Authors: Awwad Mohamed Abdelzaher , Helal Hend Gouda , Hamouda Taisir , Mohamed Soha Moussa
Published: March 2022

Purpose:To assess the effect of phacoemulsification and combined phacoemulsification-goniotomy on intraocular pressure (IOP) in patients with primary open-angle glaucoma (POAG). Setting: Benha University HospitalDesign: A retrospective, observational, cohort study Patients and Methods:Sixty patients with cataract and POAG were allocated into two groups; group (P) had phacoemulsification, while group (PG) had combined phacoemulsification-goniotomy. Patients were subdivided into subgroups moderate (Pm and PGm) and severe (Ps and PGs) glaucoma based on the American Glaucoma Society classification of glaucoma severity. All patients had their presenting IOP, medicated IOP, number of IOP lowering medications, and postoperative IOP recorded. Postoperative IOP and IOP lowering drops number were followed up for 24 months after surgery. All intraoperative and postoperative complications were recorded and managed accordingly. Results:Group (P) showed an IOP reduction from 33±1.9 and 35±0.54 to 28±1.2 and 31±0.83 mmHg in subgroups Pm and Ps, respectively on the first postoperative week. All patients in group P needed to reinstate the IOP lowering drops with a non-significant change in the number of IOP reducing drops by the end of the study. In group (PG), a highly significant reduction in postoperative IOP was noted in the first postoperative week from 31±0.9 and 34±0.29 to 14±0.9 and 26±1.2 mmHg in subgroups PGm and PGs respectively P-value <0.0001). Patients with moderate glaucoma had stopped all IOP lowering drops, while those with severe glaucoma needed fewer medications by the end of the study.Conclusion:Combined phacoemulsification-goniotomy is superior to phacoemulsification alone in cases of POAG in terms of IOP control, especially for moderate POAG.
Associations between children’s physical literacy and well-being: is physical activity a mediator?
Authors: Melby Paulina S. , Nielsen Glen , Brønd Jan Christian , Tremblay Mark S. , Bentsen Peter , Elsborg Peter
Published: March 2022

Background
Physical literacy (PL) is a multi-dimensional concept that provides a holistic understanding of movement and physical activity. PL contains an affective, a physical, and a cognitive domain, which together lay the foundation for the individual’s capacity and the tendency for participating in physical activities currently and throughout life. PL is increasingly regarded as a ‘cause of the causes’ to health promotion. Cross-sectional studies have shown associations between children’s PL, physical activity behaviours, and well-being. This study aims to examine the associations between Danish children’s PL and their physical and psychosocial well-being and whether the associations are mediated by moderate- to vigorous intensity physical activity (MVPA).
Methods
Cross-sectional data from Danish schoolchildren aged 7–13 years were collected in Jan-Dec 2020 in the Danish Assessment of Physical Literacy (DAPL) project. PL was assessed with the DAPL which measures the affective, cognitive, and physical domains of PL. MVPA (min/day) was measured with accelerometers (Axivity), psychosocial well-being was measured with The Strengths and Difficulties Questionnaire, and physical well-being was measured with the KIDSCREEN questionnaire. Structural equation models were constructed with PL and MVPA as predictors of physical well-being and four aspects of psychosocial well-being.
Results
A positive moderate association between PL and physical well-being, partly mediated by MVPA was observed. PL was positively associated with the positive aspects of psychosocial well-being and negatively associated with the negative aspects (behaviour problems). None of the associations between PL and aspects of psychosocial well-being were mediated by MVPA.
Conclusions
The study contributes to evidence on the link between PL, physical activity, and health outcomes. The study found beneficial relations between PL and physical and psychosocial well-being.
Implications of Bacteriological Study in Perforated Peptic Ulcer Peritonitis
Authors: Cimpean Sorin , Barranquero Alberto Gonzalez , Cadiere Benjamin , Cadiere Guy-Bernard
Published: March 2022

Background
In the setting of perforated pepticulcer (PPU) peritonitis, empiric antimicrobial therapy is initiated perioperatively and adapted according to the culture sensitivity. This attitude may reduce the incidence of postoperative complications. The aim of the study is to describe the microbiota found in the peritonitis due to a PPU, and to evaluate the predictors for bacterial or fungal infection.
Material and methods
We performed a single-centre, retrospective observational study of all consecutive patients who presented with PPU peritonitis and underwent emergent surgery in Saint Pierre University Hospital, Brussels, Belgium, between January 2013 and December 2020. The medical history, parameters at admission, bacterial culture, antibiotic resistance and postoperative outcomes were analysed.
Results
A total of 43 patients were included in the study. The microbiological culture rate was positive in 31% (13/43) patients, with presence of bacteria in 20.9% (9/43) and fungal infection in 16.7% (7/43) patients. The bacterial culture revealed that the most frequently isolated bacteria were Klebsiella spp. and Enterobacter in 7% (3/43) of the patients, while the most prevalent fungus isolation was Candida spp. in 16.7% (7/43) patients. There was as overall resistant rate of 17.5%. The most prevalent resistances were against ampicillin (17.1% [7/43]), and amoxicillin/clavulanic acid (9.5% [4/43]). The Charlson Comorbidity Index was an independent predictor for bacterial infection. No factors could be identified as predictors of fungal infection.
Conclusion
Candida spp., Klebsiella spp. and Enterobacter were the most common organisms isolated in the setting of PPU peritonitis.
Classification and Reconstruction of Femoral Bone Defect in the Revision of Aseptic Loosening of Distal Femoral Endoprostheses: A 10-year Multicenter Retrospective Analysis
Authors: Hou Zi-Wei , Xu Ming , Zheng Kai , Yu Xiu-Chun
Published: March 2022

Objective
This study proposes a system for classifying the aseptic loosening of distal femoral prostheses and discusses reconstruction methods for revision surgery, based on different classification types.
Methods
We retrospectively analyzed the data of patients who received revision surgery for aseptic loosening in distal femoral tumor endoprosthesis from January 2008 to December 2018 at 3 bone tumor treatment centers in China. On the basis of the patient imaging data, we proposed a classification system for the aseptic loosening of distal femoral endoprostheses and discussed its revision surgery strategy for various bone defects.
Results
A total of 29 patients were included in this study, including 20 males and 9 females aged 15–64 y (average: 43.2 y). First-revision surgery was performed on 25 patients, whereas second-revision surgery was conducted on 4 patients. The 29 patients were classified into different types based on the degree of aseptic loosening: Type Ia, 5 patients (17.2%); Type Ib, 7 patients (24.1%); Type IIa, 9 patients (31.0%); Type IIb, 7 patients (24.1%); and Type IIIb, 1 patient (3.4%). Four Type Ia patients used the longer-stem rotating hinge prosthesis, and 1 Type Ia patient used the original prosthesis. Six Type Ib patients used a longer-stem rotating hinge, and 1 Type Ib patient used the original prosthesis plus bone grafting with an allograft bone plate for revision. Eight Type IIa patients underwent revision with a longer-stem rotating hinge prosthesis, and 1 Type IIa patient received revision surgery with the original prosthesis plus bone grafting with an allograft bone plate. Meanwhile, 5 Type IIb and 1 Type IIIb patients used a longer-stem rotating hinge prosthesis, and 2 Type IIb patients used the original prosthesis for revision.
Conclusions
Aseptic loosening of the distal femoral prosthesis can be divided into 4 types and 8 subtypes. Different types of bone defect can be repaired with the appropriate reconstruction.