bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stereotactic Radiosurgery for Meningiomas in Children and Adolescents: An International Multi-Institutional Study
Authors: Samanci Yavuz , Askeroglu M. Orbay , Nabeel Ahmed M. , Reda Wael A. , Tawadros Sameh R. , Abdelkarim Khaled , El-Shehaby Amr M. N. , Emad Reem M. , Legarreta Andrew , Fernandes Cabral David , Anand Sharath , Niranjan Ajay , Lunsford L. Dade , Tripathi Manjul , Kumar Narendra , Liščák Roman , May Jaromir , Lee Cheng-chia , Yang Huai-che , Martínez Moreno Nuria , Martínez Álvarez Roberto , Douri Keiss , Mathieu David , Pikis Stylianos , Mantziaris Georgios , Sheehan Jason P. , Bernstein Kenneth , Kondziolka Douglas , Peker Selcuk 
Published: May 2023

BACKGROUND AND OBJECTIVES:
Meningiomas in children are uncommon, with distinct characteristics that set them apart from their adult counterparts. The existing evidence for stereotactic radiosurgery (SRS) in this patient population is limited to only case series. The objective of this study was to evaluate the safety and efficacy of SRS in managing pediatric meningiomas.

METHODS:
Children and adolescents who had been treated for meningioma with single-fraction SRS were included in this retrospective, multicenter study. The assessment included local tumor control, any complications related to the tumor or SRS, and the emergence of new neurological deficits after SRS.

RESULTS:
The cohort included 57 patients (male-to-female ratio 1.6:1) with a mean age of 14.4 years who were managed with single-fraction SRS for 78 meningiomas. The median radiological and clinical follow-up periods were 69 months (range, 6-268) and 71 months (range, 6-268), respectively. At the last follow-up, tumor control (tumor stability and regression) was achieved in 69 (85.9%) tumors. Post-SRS, new neurological deficits occurred in 2 (3.5%) patients. Adverse radiation effects occurred in 5 (8.8%) patients. A de novo aneurysm was observed in a patient 69 months after SRS.

CONCLUSION:
SRS seems to be a safe and effective up-front or adjuvant treatment option for surgically inaccessible, recurrent, or residual pediatric meningiomas.
Temperature and the microbial environment alter brain morphology in a larval amphibian
Authors: Emerson Kyle J. , Fontaine Samantha S. , Kohl Kevin D. , Woodley Sarah K. 
Published: May 2023

ABSTRACT
Understanding how the global climate impacts the physiology of wildlife animals is of importance. Amphibians are particularly sensitive to climate change, and it is hypothesized that rising temperatures impair their neurodevelopment. Temperature influences the composition of the gut microbiota, which is critical to host neurodevelopment through the microbiota–gut–brain (MGB) axis. Most research investigating the link between the gut microbiota and neurodevelopment occurs in germ-free mammalian model systems, leaving the nature of the MGB axis in non-mammalian wildlife unclear. Here, we tested the hypothesis that the temperature and the microbial environment in which tadpoles were raised shapes neurodevelopment, possibly through the MGB axis. Newly hatched green frog tadpoles (Lithobates clamitans) were raised in natural pond water or autoclaved pond water, serving as an experimental manipulation of the microbiota by reducing colonizing microbes, at three different water temperatures: 14, 22 and 28°C. Neurodevelopment was analyzed through measures of relative brain mass and morphology of brain structures of interest. We found that tadpole development in warmer temperatures increased relative brain mass and optic tectum width and length. Further, tadpole development in autoclaved pond water increased relative optic tectum width and length. Additionally, the interaction of treatments altered relative diencephalon length. Lastly, we found that variation in brain morphology was associated with gut microbial diversity and the relative abundance of individual bacterial taxa. Our results indicate that both environmental temperature and microbial communities influence relative brain mass and shape. Furthermore, we provide some of the first evidence for the MGB axis in amphibians.
Standing Down, Standing Together: Coalition-Building at Standing Rock
Authors: Silvestri Lisa 
Published: May 2023

Abstract
This essay explores coalition-building as a confluence of space and embodiment. In particular, the author studies the relationship between U.S. military Veterans and Lakota protestors during the 2016 and 2017 anti-Pipeline Demonstrations at Standing Rock. A critical analysis of the case study brings to light a set of workable practices that involve situating physical bodies together in space, locating the situated-self relative to other people and the world, and performing an enlarged understanding of the self as always potentially coalitional. Together, these practices contribute to forming not only a functional social alliance but also a transformative coalitional consciousness.
Reconstrucción 3D de órgano a partir de imágenes de Tomografía Axial Computarizada (TC) usando Matlab
Authors: Galeano-Galeano Sara Daniela , Mora-González Miguel Esteban , Espinosa-Medina Ricardo Alonso 
Published: May 2023

El procesamiento tridimensional y la reconstrucción de las regiones anatómicas a partir de imágenes médicas permiten aplicar un conjunto de técnicas de segmentación y filtrado para para realizar posteriormente reconstrucciones volumétricas y así generar representaciones computacionales en 3D de la anatomía humana, que es útil en el campo de la medicina para facilitar análisis de las estructuras del cuerpo humano. En este artículo, se realizó una reconstrucción 3D a partir de la segmentación, basada en la diferenciación por área, del órgano(riñón) y estructuras óseas de una serie de imágenes de un TAC abdominal. También, implementamos una interfaz interactiva para la visualización de los planos (frontal, sagital y transversal). La interfaz que muestra los diferentes planos y también carga la reconstrucción 3D que se generó en un proceso aparte, da la opción al usuario de seleccionar cualquier estudio TAC que tenga almacenado en su ordenador. Este procedimiento, según el campo de aplicación, complementa la interacción y análisis de estructuras anatómicas al médico, permite planificar un tratamiento oportuno que ayudará al análisis preoperatorio de patologías complejas y la formulación de estrategias quirúrgicas.
Estudio de cobertura en 5G con ICS Telecom: análisis de perdidas por factores climatológicos en tecnología 5G para las zonas metropolitanas de la ciudad de Bogotá D.C.
Authors: Pérez-Murillo Oswaldo , Páez-Parra Ingrid Patricia 
Published: May 2023

En este proyecto se realizó un estudio y su posterior análisis de cobertura para una red en tecnología 5G en un escenario metropolitano de la ciudad de Bogotá, Colombia. Se inicia, con una explicación de qué es 5G y qué se espera de esta tecnología. Con este preámbulo se establecieron los parámetros de simulación para la tecnología 5G, definiendo las frecuencias de 3 GHz hasta los 100 GHz, lo que conlleva al uso de ondas milimétricas. Para la ubicación de las estaciones base para las simulaciones, se realizaron teniendo en cuenta dos operadores de los cinco existentes en el país (operadores X y Y).
El escenario fue elegido con el propósito de estudiar el caso más presentado en el momento de desarrollo y diseño del sistema de telecomunicaciones celulares como son los sistemas sin línea de visión (NLOS) que se observa en las instalaciones de la Universidad Nacional de Colombia, donde se encuentran zonas verdes amplias y edificios entre 4 y 10 pisos.
De acuerdo a los resultados obtenidos se evidencia que la perdida de señal en el espacio libre es elevada debido a los múltiples obstáculos con los que se encuentra. En las simulaciones se tuvieron en cuenta los efectos climatológicos como la lluvia y la niebla que incrementan las pérdidas de la señal.
Cortically Evoked Movement in Humans Reflects History of Prior Executions, Not Plan for Upcoming Movement
Authors: Suleiman Abdelbaset , Solomonow-Avnon Deborah , Mawase Firas 
Published: May 2023

Human motor behavior involves planning and execution of actions, some more frequently. Manipulating probability distribution of a movement through intensive direction-specific repetition causes physiological bias toward that direction, which can be cortically evoked by transcranial magnetic stimulation (TMS). However, because evoked movement has not been used to distinguish movement execution and plan histories to date, it is unclear whether the bias is because of frequently executed movements or recent planning of movement. Here, in a cohort of 40 participants (22 female), we separately manipulate the recent history of movement plans and execution and probe the resulting effects on physiological biases using TMS and on the default plan for goal-directed actions using a timed-response task. Baseline physiological biases shared similar low-level kinematic properties (direction) to a default plan for upcoming movement. However, manipulation of recent execution history via repetitions toward a specific direction significantly affected physiological biases, but not plan-based goal-directed movement. To further determine whether physiological biases reflect ongoing motor planning, we biased plan history by increasing the likelihood of a specific target location and found a significant effect on the default plan for goal-directed movements. However, TMS-evoked movement during preparation did not become biased toward the most frequent plan. This suggests that physiological biases may either provide a readout of the default state of primary motor cortex population activity in the movement-related space, but not ongoing neural activation in the planning-related space, or that practice induces sensitization of neurons involved in the practiced movement, calling into question the relevance of cortically evoked physiological biases to voluntary movements.SIGNIFICANCE STATEMENTHuman motor performance depends not only on ability to make movements relevant to the environment/body's current state, but also on recent action history. One emerging approach to study recent movement history effects on the brain is via physiological biases in cortically-evoked involuntary movements. However, because prior movement execution and plan histories were indistinguishable to date, to what extent physiological biases are due to pure execution-dependent history, or to prior planning of the most probable action, remains unclear. Here, we show that physiological biases are profoundly affected by recent movement execution history, but not ongoing movement planning. Evoked movement, therefore, provides a readout of the default state within the movement space, but not of ongoing activation related to voluntary movement planning.
Características de país e corporativas melhoram a divulgação ambiental, social e de governança?
Authors: Rigon Letícia , Degenhart Larissa , Ribeiro Ramiro 
Published: May 2023

Esta pesquisa buscou analisar as características de país e corporativas que influenciam a divulgação ambiental, social e de governança (ESG) de empresas do Brasil e Alemanha. A metodologia caracteriza-se como descritiva, quantitativa e documental, com a análise do período de 2010 a 2019, de empresas brasileiras da Brasil, Bolsa e Balcão (B3) e alemãs pertencentes a Bolsa de Valores de Frankfurt. Em relação às características de país analisadas (emissões de carbono e PIB), evidenciou-se que as emissões de carbono influenciam positivamente a divulgação ESG de empresas brasileiras e negativamente no cenário de empresas da Alemanha. O PIB apresentou relação negativa com a divulgação ESG das empresas brasileiras. As variáveis corporativas: market to book, liquidez e alavancagem financeira se relacionaram negativamente com a divulgação ESG de empresas do Brasil e Alemanha. O risco do negócio apresentou relação positiva com a divulgação ESG de empresas da Alemanha. Estes resultados revelam que diferentes características de país e corporativas apresentam implicações na divulgação ESG de empresas brasileiras e alemãs. Esta pesquisa contribui para as empresas ao evidenciar quais características de país e corporativas tendem a melhorar a divulgação ESG. Visa promover na literatura maiores discussões a respeito de fatores pouco explorados nos estudos e que tendem a melhorar as ações ambientais, sociais e de governança e, consequentemente, beneficiar as empresas, o meio ambiente e a sociedade. Ademais, adiciona conhecimento à literatura sobre os impactos das características do país e corporativas na divulgação ambiental, social e de governança de empresas de países em desenvolvimento (Brasil) e desenvolvidos (Alemanha).
Exploring Students’ Perceived Difficulties of Learning Physics
Authors: Wangchuk Damcho , Wangdi Dumcho , Tshomo Sonam , Zangmo Jampel 
Published: May 2023

This study investigated grade 9-12 students’ perceived difficulties in learning physics and how they addressed them. 124 (48 male and 76 female) students studying in one of the higher secondary schools in Bhutan participated in the study. The data initially gathered through a survey was subsequently consolidated with the individual interview to establish in-depth findings. Inductive thematic analysis was used to analyse the data. The key findings revealed that the students’ perceptions of their difficulty in learning physics were associated with student, curriculum, and subject-related factors. Strategies used by the students to address these difficulties in learning physics is also explained. Implications for future research to investigate comparable challenges in other disciplines using multi-methods are also offered.
The diagnostic workup of patients with a primary complaint of post-nasal drip
Authors: Perez Hector A. , Chan Nadia , Crawley Brianna , Krishna Priya , Church Christopher A. , Seiberling Kristin A. 
Published: May 2023

Background: Post-nasal drip (PND) is likely multifactorial in etiology which may be attributed to excessive sinonasal secretions or an increase in mucous viscosity from chronic sinusitis or allergic rhinitis. Increased throat sensitivity due to inflammatory changes have been postulated as a possible cause, which may be secondary to laryngopharyngeal reflux (LPR).
Methods: Patients presenting with a primary complaint of post-nasal drip were prospectively enrolled into the cohort study. All patients underwent nasal endoscopy, flexible laryngoscopy, in-vitro allergy testing, and computed tomography (CT) imaging. Patients were also asked to fill out a SNOT-22 questionnaire and a reflux severity index (RSI) form.
Results: 33 patients were enrolled in the study of which 22 completed all necessary procedures. In our cohort of patients the average SNOT score was 43±22, and the average RSI was 22±7. Twenty-one of the 22 patients had RSIs consistent with LPR. Reflux finding scores (RFS) as evaluated and averaged between two laryngologists found that all patients in the cohort met criteria for LPR with an average RFS of 12.6±2.1. Fourteen of the 22 patients had a positive RAST. Seventeen of the patients in the cohort had CT scans that were normal. The average Lund Kennedy score was 0.9±1.4 with 14 of the 22 patients having unremarkable nasal endoscopies.
Conclusions: Patients with PND benefit from consideration of empiric treatment with PPIs, dietary modification given the high rates of LPR. Consideration should also be given to allergy testing prior to any consideration for CT imaging.
Medical management versus chemical cautery with medical management in treatment of inferior turbinate hypertrophy: a comparative study
Authors: Gosavi Rahul S. , Shahane Prateek P. , Magdum Vishal K. , Gosavi Shishir D. , Bachhav Kalpesh S. , Purohit Gautam S. 
Published: May 2023

Patients having inferior turbinate hypertrophy causing intractable sneezing, rhinnorhoea which is non-responsive to conventional medication require alternative therapies. Aim of the study was to compare medical management vs chemical cautery with medical management in treatment of inferior turbinate hypertrophy since both these treatments are easily accessible, cost effective to the patients as well as not associated with major complications. The complaints sneezing, rhinorrhoea, nasal blockage, headache, eye irritation and redness of patients are reduced and quality of life of patients improved after chemical cautery with medical management as compared to medical management alone. 50 patients of age group 15-75 years with c/o Sneezing, rhinorrhoea, nasal blockage and headache were included in our study. Inferior turbinate hypertrophy was diagnosed on the basis of anterior rhinoscopy and diagnostic nasal endoscopy. Patients were divided randomly in 2 group-group A (medical management), group B (chemical cautery with medical management). The 22 question sino-nasal outcome test (SNOTT22) score and rhinomanometry was done before and after treatment to compare the efficacy and detect symptom free period in both groups. Percentage of relief was more among group B patients as compared to group A patients. Symptom free period was more in group B patients as compared to group A patients and both of them were analysed on the basis of SNOTT22 score and rhinomanometry. Chemical cautery with topical application of silver nitrate coupled with medical management is more effective in treatment of inferior turbinate hypertrophy as compared to medical management alone.
Acquired hemangioma of the external nose: a case report
Authors: Sahoo Soumick Ranjan , Pallavi Nayak  
Published: May 2023

Hemangiomas of the nose are very rare lesions.They may be found in both paediatric and adult population.The various modalities of treatment may range from medical management to surgical management.We are reporting a benign vascular lesion near the nasal tip at the soft triangle aesthetic subunit in a 64 year old male which was treated by simple surgical excision using electrocautery and primary closure. Histopathological examination of excised specimen confirmed the diagnosis as hemangioma.
Aportes antropologicos al estudio de los movimientos Campesinos en el Perú
Authors: Altamirano Teófilo 
Published: May 2023

Este ensayo tiene como primer objetivo la discusión teórica y práctica de los aportes que la Antropología está brindando a la problemática del cambio y particularmente a las movilizaciones campesinas. El segundo objetivo es hacer referencia específica a los estudios e investigaciones sobre el tema en discusión realizada en el Perú. Finalmente, referirme a mi trabajo sobre movimientos carnpsinos en Ongoy (Andahuaylas) además de caracterizar los últimos acontecimientos campesinos en la provincia de Andahuaylas, Dpto. de Apurimac,y de esta manera despejar las interpretaciones relativamente erróneas que hasta ahora se han venido desarrollando especialmente en discusiones de carácter político.
Populismo: el ruido y la ira
Authors: Gutiérrez Vera Daniel 
Published: May 2023

El presente artículo refiere a las propuestas de Ernesto Laclau que revisan la consideración tradicional acerca del populismo. En marzo de 2012, Laclau estuvo de visita en Ecuador y ofreció una conferencia magistral en FLACSO. El artículo a continuación responde en parte a lo dicho por Laclau. Se esbozan críticas a algunos de sus planteamientos.
Entre madres-adolescentes y adolescentes-madres: un análisis de su trayectoria de vida y los factores que influyen en su configuración
Authors: Mastro Naccarato Irene Del 
Published: May 2023

Analizar las consecuencias de la maternidad adolescente en los ámbitos educativo, laboral y familiar, así como los factores que influyen en la reconfiguración de la trayectoria de vida de la madre adoles- cente tras el embarazo, son los principales objetivos de esta investigación realizada entre los años 2012 y 2013. A partir de trece entrevistas en profundidad a madres adolescentes con hijos entre 2 y 5 años de edad y provenientes de distintos estatus socioeconómicos de Lima, encontramos dos trayectorias tipo: la trayectoria madre adolescente y adolescente-madre. Los hallazgos de este estudio sugieren la importancia del estatus socioeconómico, los roles de género, las concepciones en torno a la adolescencia y al ejercicio de la maternidad, así como las vivencias, características y aspiraciones propias de cada mujer como factores que intervienen en la configuración de la trayectoria de vida de las madres adolescentes.
Entre la incertidumbre y el individualismo. Ética científica de la adversidad y nanotecnología en el Perú
Authors: Zárate Vásquez Julio Sebastián 
Published: May 2023

Hacer ciencia en el Perú es enfrentarse a la adversidad. En una coyuntura que se caracteriza por suprecariedad institucional y en la que, al mismo tiempo, se ha comenzado a demandar inversión en ciencia, tecnología e innovación, cabe preguntarse por los modos en que los actores superan día a día estas dificultades. En ese sentido, la propuesta consiste en acercarse a estos actores del conocimiento a partir del estudio de un caso particular: el de los expertos en nanotecnología. La hipótesis propuesta es que, para superar dichas adversidades, los expertos han desarrollado ciertos mecanismos individuales y colectivos que tienen como base una ética científica particular que se expresa a través del interés individual por generar y acceder a más conocimientos. A partir de ello, se intentará caracterizar el panorama institucional de la ciencia y la tecnología en relación con la investigación científica.
PENINGKATAN MUTU PEMBELAJARAN GERAK DASAR TARI KELAS VII MELALUI VIDEO ANIMASI 2D MENGGUNAKAN METODE ADDIE
Authors: Iriyanto Dede , Suarna Nana , Raditya Danar Dana Raditya Danar Dana 
Published: May 2023

ABSTRAK
Kurikulum Merdeka menempatkan Seni Tari sebagai mata pelajaran yang diberikan pada jenjang menengah pertama (SMP) kelas VII di SMPN 1 Gunung Jati. Kualitas pembelajaran seni tari dipengaruhi oleh komponen-komponen pendidikan dalam meningkatkan mutu pembelajaran, salah satunya adalah dengan memanfaatkan media pembelajaran. Subjek pada penelitian ini dilakukan pada siswa kelas VII di SMPN 1 Gunung Jati yang menempuh mata pelajaran Seni Tari. Permasalahan selama ini diantaranya adalah; (1) Media pembelajaran gerak dasar tari sulit menampilkan gerak dan suara dalam halaman media cetak, (2) Kurangnya pendidik mata pelajaran seni tari dari lulusan jurusan pendidikan seni tari, (3) Masih dominan pendidik menggunakan metode ceramah dan tanya jawab tanpa variasi lain dalam proses pembelajaran gerak dasar tari. Tujuan penelitian ini adalah; (1) Untuk menampilkan media pembelajaran gerak dasar tari dengan gerak dan suara, (2) Untuk meningkatkan pendidik mata pelajaran seni tari dari lulusan jurusan pendidikan seni tari, (3) Untuk meningkatkan dominan pendidik pembelajaran seni tari gerak dasar tari. Metode penelitian ini menggunakan metode ADDIE yang memiliki 5 tahapan, yaitu: Analysis, Design, Development, Implementation dan Evaluation. ADDIE merupakan metode penelitian yang cocok digunakan untuk mengembangkan media pembelajaran karena berorientasi produk sehingga sesuai digunakan untuk mengembangkan video animasi dua dimensi sebagai media pembelajaran. Hasil uji normalitas (Shapiro-Wilk) menunjukan nilai signifikan 0.082, hal ini menunjukkan bahwa hasil uji normalitas nilai signifikannya lebih dari 0.05. Maka dari itu H0 diterima, sehingga implementasi media pembelajaran animasi dua dimensi berdampak terhadap peningkatan mutu pembelajaran.
Kata Kunci: Media Pembelajaran, Video Animasi 2D, Gerak Dasar Tari, Metode ADDIE