bluuebunny/crossref_metadata_2025 huggingface dataset:
Exploring Sensitivity Factors Influencing Technology Adoption for Climate Change Adaptation among Agricultural Communities of Kedah and Kelantan, Malaysia
Authors: Khalid Nurul Amiera , Arif Shah Jasmin , Mohamed Haris Nur Bahiah , Burhan Nik Ahmad Sufian , Mohamed Shaffril Hayrol Azril , Abu Samah Asnarulkhadi
Published: July 2024

The agricultural sector is exceptionally susceptible to fluctuations in climatic conditions, and such changes significantly impact agricultural productivity as well as the welfare of agricultural communities. Therefore, it is crucial to comprehend the vulnerability and risk of the agricultural communities to these effects. The agriculture ability of the sector to successfully adapt over the long term will depend heavily on the adoption of new technologies. Therefore, the adoption of emerging technologies into agriculture is a key component of climate change adaptation. Nguyen et al. (2021) suggest that it would be great for future study to conceptualize the integration of economic, social, and political issues in improving adaptation among agricultural communities. Therefore, current study attempts to determine social vulnerability of the agricultural communities particularly in terms of sensitivity which consist of economic, political, cultural and institutional factors that influence technology adoption for climate change adaptation. The study will be using questionnaire as the main research instrument. A descriptive, correlation and regression analysis will be employed in order to achieve the objectives of the study. A non-probability sampling known as convenient sampling technique will be employed as the sampling technique. The study will be conducted in Kedah and Kelantan as both states are predominantly characterized by an agriculture-based economy which currently have been reported to be affected by climate change. Results of the study will contribute to the making of policy related to agriculture and climate change adaptation as well as for future study related to the field.
Closing the Gap between Financial Literacy and Financial Inclusion
Authors: Pandeirot Lanemey Brigitha , Aseng Andrew Christian
Published: July 2024

Nowadays many people still trapped into some financial fraud because of lack of financial literacy. On the other hand, the Indonesian government are trying to increase public financial literacy rate in order to reach the financial inclusion rate through Strategi Nasional Literasi Keuangan Indonesia (SNLKI). Thus, this systematic literature review was done to discuss factors influence financial literacy so that it can be increased and cope with the financial inclusion rate. Several journal articles and related sources were selected and analyzed. The results found that financial literacy does affect financial inclusion and for the former rate be increased to close the gap with the latter, there are five factors need to consider, namely: formal education, socialization, family, government regulation, and use of financial technology. There are some recommendations of strategy for each factor that are discussed in hoping to help increase public financial literacy and support the government program through SNLKI.
Influence Financial Management and Use Accounting Information Technology in the Preparation of BUMDes Financial Statements
Authors: Putri Ani , Blongkod Harun , Mahmud Muliyani
Published: July 2024

Purpose: This study aimed to investigate how financial management and the utilization of accounting information technology influence the creation of financial results statements.Design/Methodology/Approach: This study utilized a quantitative methodology using a Likert scale questionnaire to collect primary data. A saturated sample or survey technique was used to obtain a sample of 27 BUMDes with a total of 202 respondents. Testing the research hypothesis using the AMOS 24 tool.Findings:The findings indicated that financial management lacked a beneficial and notable influence on the enhancement of BUMDes financial reporting. Conversely, the adoption of information related to accounting technology demonstrated a positive and noteworthy impact on the development of BUMDes financial reports. Furthermore, when considered together, both financial management and the adoption of accounting information technology exhibited a positive and noteworthy influence on the development of BUMDes financial reports, as elucidated by the 90.2% R-square value. In comparison, the remaining 9.8% was attributed to external variables beyond the scope of the study in Bone Bolango Regency, Gorontalo Province.
Scale offers the possibility of identifying adherence to lifestyle interventions in patients with non-alcoholic fatty liver disease
Authors: Liu Cen-Qin , Hu Bing
Published: July 2024

Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disorder, and dietary and lifestyle interventions remain the mainstays of NAFLD therapy. Zeng et al established a prediction system to evaluate adherence to lifestyle interventions in patients with NAFLD and choose optimal management. Here, we discuss the application scenarios of the scale and the areas warranting further attention, aiming to provide a possible reference for clinical recommendations.
The Effects of Training and Communication: Study on Performance of the Food and Beverage Service Employee
Authors: Sulastri Ida Ayu Putu
Published: July 2024

Job training and communication are the basis for employees to be able to develop their personalities and be responsible for their positions. This study aims to analyze the effect partially and simultaneously between training and communication on employee performance in the food and beverage department at Padma Resort Legian. This study uses a questionnaire in data collection. The number of samples used were 37 people. Data analysis techniques used were descriptive analysis, validity and reliability tests, classical assumption tests, multiple linear regression analysis, t-test analysis, and f-test analysis. The results of the analysis show the regression equation model Y=0.529 + 0.832 X1 + 0.527 X2. This study resulted in three conclusions, namely (a) there is a positive and significant influence between training on employee performance. This is indicated by the significance value for the training variable (X1) of 0.000 t table (0.05 : 34) = 1.691; (b) there is a positive and significant influence between communication on employee performance. This is indicated by the significance value for the communication variable (X2) of 0.000 t table (0.05 : 34) = 1.691; (c) there is a positive and significant influence between training and communication on employee performance. This is indicated by the significance value of 0.000 F table 3.276. Keywords: Training, Communication, Employee PerformanceKeywords: Training, Communication, Employee Performance
Identify Industrial Work Practices in the Food and Beverage Product Department of Grand Ixora Kuta Resort
Authors: Yanti Ni Ketut Karisma , Anggayana I Wayan Agus
Published: July 2024

This research Identify Industrial Work Practices in the Food and Beverage Product Department of Grand Ixora Kuta Resort. It can be used as a guide to improve the quality of work and creativity in entering the tourism industry. Increasing student knowledge in the Food and Beverage products field and implementing training will be helpful later when facing the industrial world. This research is descriptive qualitative research. The document used in this research is taken from Industrial Work Practices in the Food and Beverage Product Department of Grand Ixora Kuta Resort Students' report. After carrying out industrial work practices, the researcher gained a lot of useful work experience in the form of theories and practical knowledge regarding the Food and Beverage Product field and the ability to work together. In addition, the author has carried out one of the requirements for completing the Food and Beverage Product Study program by carrying out industrial work practices. Keywords: Industrial Work Practices, Food and Beverage Product Department, Quality of work, Tourism industry
Precisión de los métodos de primera generación en la detección de estenosis en fístulas arteriovenosas nativas
Authors: Rubio Castañeda Francisco Javier , Fernández Núñez Manuel , Sierra Sánchez Ana Isabel , Mateo Sánchez María Amaya , Cantín Lahoz Víctor , Ferrer López Emilia
Published: July 2024

Introducción: Existen diferentes métodos de primera generación para la detección de estenosis.Objetivo: Determinar la precisión de los métodos de primera generación en la detección de estenosis en fístulas arteriovenosas nativas.Material y Método: Estudio observacional retrospectivo. Muestra: Pacientes con fístulas arteriovenosas nativas funcionantes. Métodos de primera generación: exploración física, test manuales: test de aumento del pulso y test de elevación del brazo, métodos indirectos, Kt/V y recirculación de la fístula arteriovenosa. El diagnóstico de estenosis fue confirmado mediante ecografía doppler. Se calculó sensibilidad, especificidad, valor predictivo positivo (VPP), valor predictivo negativo (VPN) y precisión de los métodos de primera generación basándose en la ecografía doppler.Resultados: Muestra 39 pacientes, 79,48% hombres. El ecógrafo detectó 19 estenosis, ninguna significativa. Exploración física: sensibilidad 31,5%, especificidad 80%, VPP 60%, VPN 55,1%, precisión 56,4%. Test aumento del pulso: sensibilidad 5,2%, especificidad 90%, VPP 33,3%, VPN 50%, precisión 48,7%. Test elevación del brazo: sensibilidad 52,6%, especificidad 70%, VPP 62,5%, VPN 60,8%, precisión 61,5%. Métodos indirectos: sensibilidad 15,7%, especificidad 55%, VPP 25%, VPN 40,7%, precisión 35,9%. Kt/V: sensibilidad 10,5%, especificidad 75%, VPP 28,5%, VPN 46,8%, precisión 43,5%. Recirculación de la FAV: sensibilidad 10,5%, especificidad 100%, VPP 100%, VPN 54,1%, precisión 56,4%.Conclusiones: Todos los métodos de primera generación presentan alta especificidad y baja sensibilidad. El grado de estenosis (significativa o no significativa) podría influir en la sensibilidad de la exploración física, pero no en la especificidad. El test de elevación del brazo es el método de primera generación más preciso en la detección de estenosis.
Incidence of adverse events of the Covid-19 vaccine in a population of kidney transplant recipients
Authors: Gimeno Hernán Verónica , Peix Jiménez Belén , Pérez Flores Isabel , Aiffil Meneses Arrianne , Ortuño Soriano Ismael , Sánchez Fructuoso Ana
Published: July 2024

Introducción: Early published series suggest that most renal transplant recipients remain at high risk of SARS-CoV-2 infection due to poor humoral response after vaccination. The aim was to study the occurrence of adverse events after two doses of mRNA-1273 vaccine in a population of renal transplant recipients.Material and Method: Analytical, observational, and prospective study. Subjects were injected with two doses of mRNA-1273 vaccine against SARS-CoV-2 according to the schedule established by the laboratory. After injection of each dose, and up to 72 hours later, participants recorded local and/or systemic symptoms and their intensity.Results: 187 patients were included. Eighteen percent of them became infected with SARS-CoV-2 in the pre-vaccination period or between the 1st and 2nd dose. The incidence of adverse events was 91.2%. Of these, the incidence of local (62%) was higher than that of systemic (55%). Past infection was a risk factor for the occurrence of local adverse events after vaccination (OR= 2.4; p=0.045). The same association was detected for systemic adverse events, which were more frequent among those who had passed the disease (OR=3.83; p=0.003).Conclusions: The mRNA-1273 vaccine does not appear to cause serious side effects. The incidence of local and systemic adverse events was higher in those patients with past disease.
Estudio comparativo de la resiliencia en pacientes de hemodiálisis y trasplante renal
Authors: Martínez López Yasmani , Quintana Ugando Maira , Gayol-García Elia Gertrudis
Published: July 2024

Introducción: Los pacientes con enfermedad renal crónica (ERC) en fase avanzada se ven sometidos a métodos de sustitución de la función renal, como la hemodiálisis y el trasplante renal. La resiliencia constituye un factor protector que propicia la adaptación ante eventos adversos que pueden surgir durante el proceso de cambio.Objetivos: Comparar la resiliencia y sus dimensiones en dos grupos de pacientes con ERC según su método de sustitución de la función renal y por género, independientemente del grupo de pertenencia.Material y Método: El estudio fue transversal analítico y se utilizó la escala validada de resiliencia de Connor-Davidson de 25 ítem. Las variables fueron los niveles de la resiliencia y sus dimensiones. Se incluyeron, además, género y edad.Resultados: Participaron 88 pacientes del hospital universitario Arnaldo Milián Castro, del total 53 (52 %) fueron del masculino, 44 recibiendo hemodiálisis y 44 con trasplante renal. Los pacientes de hemodiálisis mostraron valores medios superiores en cuanto a la resiliencia (M=79), persistencia, tenacidad y autoeficacia (M=26) y adaptabilidad y redes de apoyo (M=17); en tanto los de trasplante destacaron en control bajo presión (M=22); control y propósito (M=15) y espiritualidad (M=9). Por género, el masculino mostró promedios superiores en todas las variables. La prueba U de Man Whitney arrojó diferencias estadísticamente significativas en un grupo de variables para ambas formas de agrupación.Conclusiones: Existen diferencias significativas de la resiliencia y los factores que la condicionan en los grupos de hemodiálisis y trasplante; así como en los grupos por género.
Influencia del marcaje previo en las complicaciones post colocación del catéter de diálisis peritoneal
Authors: Menéndez Servide Fabiola , Fernández Pérez Mónica , Suárez Álvarez Adela , Blanco Sierra Jessica , Pasarón Alonso Magdalena , Núñez Moral Miguel
Published: July 2024

Introducción: Un buen acceso peritoneal es imprescindible para la realización de la Diálisis Peritoneal, pudiendo constituir la técnica de marcaje prequirúrgico un punto clave en la aparición de complicaciones.El objetivo de nuestro estudio fue evaluar la influencia del marcaje pre-quirúrgico en las complicaciones post-colocación del catéter de diálisis peritoneal.Material y Método: Estudio de cohortes; incluimos a los pacientes mayores de 18 años a quienes se les colocó un catéter peritoneal en 2018 (cohorte sin marcaje) y en 2022 (cohorte con marcaje). Las variables analizadas fueron: edad, sexo, complicaciones y evolución de estas.Realizamos un análisis multivariante mediante regresión logística, calculando la Odds Ratio (OR) y el intervalo de confianza 95% de aparición de complicaciones.Resultados: Se analizaron 107 pacientes, 73,8 % hombres y una edad media de 65,6 ± 12,2 años.De los 56 pacientes sin marcaje, 33 sufrieron complicaciones, frente a 18 de los 51 en la cohorte con marcaje.La OR de complicaciones ajustad por edad y sexo del grupo marcaje frente a no marcaje fue 0,39, IC 95%:0,17-0,86.El 38,9% de las complicaciones fueron resueltas en el grupo de marcaje frente al 24,2% en el grupo sin marcaje. (p=0,548)Conclusiones: La técnica de marcaje previo del catéter de diálisis peritoneal se asocia a una reducción de las complicaciones postquirúrgicas en estos pacientes.
Cuidado de enfermería del paciente con enfermedad renal crónica en atención primaria de salud
Authors: Arancibia Gajardo Cristina , González Vargas Alejandra
Published: July 2024

Introducción: La enfermedad renal crónica avanzada es un importante problema de salud pública, disminuye las expectativas y calidad de vida de quienes lo padecen, afecta gran número de personas y representa una carga para el sistema sanitario.Los enfermeros, en su rol educador, deben realizar acciones de prevención de la enfermedad, resultando interesante conocer sus experiencias en el cuidado de los pacientes renales en Atención Primaria de Salud, siendo aquí donde se hace prevención del avance de la enfermedad.Objetivo: Describir la experiencia vivida por los profesionales de enfermería en el cuidado de pacientes con enfermedad renal crónica en atención primaria de salud.Material y Método: Estudio cualitativo, cuya muestra fue de 10 enfermeros que trabajaban en distintos centros de atención primaria de Copiapó (Chile). Se realizó una entrevista semiestructurada y análisis de datos mediante codificación abierta en el programa Atlas Ti.Resultados: Surgieron 4 categorías: factores relacionados con la calidad de la atención, gestión del cuidado de enfermería, cuidado multidisciplinario y elementos condicionantes para la atención de enfermería. Se evidenciaron importantes limitaciones para el cuidado del paciente renal, falta de tiempo y consultas específicas para seguimiento, formación profesional limitada en el tema y factores socio- económicos del paciente que influyen en el cuidado.Conclusiones: La inclusión de cuidados específicos para el paciente renal en atención primaria y la capacitación del profesional de enfermería, surgen como importantes herramientas para mejorar el cuidado de los pacientes con enfermedad renal crónica avanzada.
Adherencia a inmunoterapia y su relación con variables clínicas en adultos jóvenes trasplantados renales
Authors: Rodríguez Medina Rosa María , Aranda Hernández Yosileb Sinai , Cruz Sánchez María Beatriz , Meza García Carlos Francisco
Published: July 2024

Introducción: La adherencia a la inmunoterapia permite disminuir la incidencia de rechazo y pérdida del injerto, por lo que es necesario identificar las variables clínicas relacionadas con la adherencia de adultos trasplantados renales a fin de optimizar la supervivencia del injerto renal.Objetivo: Evaluar la prevalencia de adherencia a la inmunoterapia y su relación con variables clínicas en adultos jóvenes trasplantados renales de un hospital de tercer nivel.Material y Método: Estudio observacional descriptivo de corte transversal. Se ha realizado un muestreo no probabilístico por conveniencia que incluyó a 45 adultos trasplantados renales. Se estudiaron variables sociodemográficas y clínicas, ansiedad y depresión. Para evaluar adherencia se aplicó el cuestionario Basel Assessment of Adherence to Immunosuppressive Medications Scale.Resultados: La edad media de los participantes fue de 33,7±9,4 años, la mayoría fueron hombres (66,7%). La prevalencia de no adherencia fue del 75,5%; se observó asociación entre la adherencia con el motivo de ingreso hospitalario y la ansiedad. Los adultos no adherentes mostraron problemas como el olvido de la toma del inmunosupresor y retraso de al menos 2 horas en la ingesta del medicamento.Conclusiones: La prevalencia de no adherencia a la inmunoterapia fue alta, superior a la reportada en estudios previos, por lo que es necesaria la intervención continua para mejorar el apego a las recomendaciones de la terapia inmunosupresora.
Desarrollo de la Competencia Comunicativa Escrita Mediante el Uso de las Anécdotas, en la Asignatura de Inglés del Colegio Santos Apóstoles
Authors: Gélvez Ortega Lady Alexandra
Published: July 2024

El objetivo: proponer un plan para el desarrollo de la competencia comunicativa en la escritura mediante el uso de las anécdotas, en la asignatura de inglés de los estudiantes del grado décimo del Colegio Santos Apóstoles, se enmarcó en un estudio factible, diseño de campo descriptivo no experimental. La muestra fue de 131 estudiantes, 6 docentes y directores docentes, se aplicó dos cuestionarios con respuestas dicotómicas. Los resultados se presentaron en cuadros de frecuencias y gráficos, interpretados mediante la visión de la investigadora con apoyo teórico. Se concluye: los docentes y directivos se sienten comprometidos con crear una herramienta para el mejoramiento de la enseñanza del inglés, desconocimiento del uso de anécdotas como estrategias de aprendizaje y se interesan por la innovación. Se recomienda el diseño de una secuencia didáctica centrada en el uso de las anécdotas para el desarrollo de la competencia comunicativa en la escritura de inglés.
RETRACTION NOTICE: Analysis of body composition and autonomic function of the heart of schools from northern Mexico by gender
Authors: Hernández-Pérez Héctor Alan , Hernández-Cruz Germán , Rangel-Colmenero Blanca Rocío , Quezada-Chacón José Trinidad , Cruz-Castruita Rosa María
Published: July 2024

Retraction note: Hernández Pérez, H. A., Hernández Cruz, G., Rangel Colmenero, B. R, Quezada Chacón, J. T., & Cruz Castruita, R. M. (2023). Analysis of body composition and autonomic function of the heart of schools from northern Mexico by gender. TECHNO REVIEW. International Technology, Science and Society Review Revista Internacional De Tecnología, Ciencia Y Sociedad, 15(1), 2–13. https://doi.org/10.37467/revtechno.v13.4800
The Editorial Office of Eurasia Academic Publishing Group has retracted this article. An investigation carried out by our Research Integrity Department has found a group of articles, among which this one is found, that are not within the thematic scope of the journal. We believe that the editorial process was manipulated and, furthermore, acceptance decisions were made under possibly inappropriate peer review.
PELATIHAN DAN PENDAMPINGAN TEKNIK DASAR EDITING FOTO DAN TEKS PADA TIM PENGELOLA WEBSITES DI SEKOLAH SDK COR JESU MALANG
Authors: Fery Satria Kristianto  , Romualdus Rahadian Prilahardo  , Ernest Wea
Published: July 2024

AbstrakKegiatan pengabdian masyarakat bertajuk "Pelatihan dan Pendampingan Teknik Dasar Editing Foto dan Teks pada Tim Pengelola Website di Sekolah SDK Cor Jesu Malang" bertujuan untuk meningkatkan keterampilan teknis tim pengelola dalam mengelola konten digital. Mengingat pentingnya kualitas visual dan teks dalam penyajian informasi di era digital, pelatihan ini dirancang untuk membekali peserta dengan kemampuan editing foto dan teks menggunakan perangkat lunak. Metodologi pelatihan mencakup analisis kebutuhan awal, penyusunan materi berdasarkan hasil analisis, pelaksanaan pelatihan interaktif, dan pendampingan intensif. Evaluasi dilakukan melalui pretest dan posttest untuk mengukur peningkatan keterampilan peserta. Hasil pengukuran menunjukkan peningkatan signifikan pada kemampuan peserta dalam aspek-aspek seperti perubahan ukuran dan resolusi gambar, pemahaman format file gambar, teknik pemotongan gambar, penentuan warna, dan unggah konten gambar ke website. Presentase rata-rata pemahaman peserta terhadap materi dari 60% menjadi 80%. Peningkatan ini menunjukkan bahwa pelatihan dan pendampingan yang diberikan efektif dalam meningkatkan kompetensi teknis peserta. Dengan keterampilan baru ini, tim pengelola website diharapkan dapat menyajikan konten yang lebih menarik dan informatif, meningkatkan komunikasi dan citra sekolah di mata publik.Kata kunci: foto editing, kemampuan teknis, pelatihanAbstractThe community service activity titled "Training and Mentoring on Basic Photo and Text Editing Techniques for the Website Management Team at SDK Cor Jesu Malang" aims to enhance the technical skills of the management team in handling digital content. Considering the importance of visual and textual quality in presenting information in the digital era, this training is designed to equip participants with photo and text editing skills using software tools. The training methodology includes initial needs analysis, preparation of materials based on the analysis results, interactive training sessions, and intensive mentoring. Evaluation was conducted through pretest and posttest to measure the improvement in participants' skills. The measurement results showed a significant increase in participants' abilities in aspects such as resizing and resolution adjustment of images, understanding image file formats, image cropping techniques, color determination using editing tools, and uploading image content to the website. The average understanding of the participants increased from 60% to 80%. This improvement indicates that the training and mentoring provided were effective in enhancing the technical competencies of the participants. With these new skills, the website management team is expected to present more engaging and informative content, thus improving communication and the school's image in the public.Keywords:photo editing, technical skill, training
Comparison of JavaScript Frontend Frameworks – Angular, React, and Vue
Authors: Karić Anes , Durmić Nermina
Published: July 2024

This research aims to evaluate JavaScript frontend frameworks by their performance and popularity to provide practitioners with guidance in making informed decisions when choosing frontend frameworks for their projects. For that purpose, three applications with the same features were built using three best-known JavaScript frontend frameworks: Angular, React, and Vue. Comparative analysis was employed to conduct the framework comparison using the content of the three applications. For performance evaluation, tools like PageSpeed Insights, WebPageTest, GTmetrix, Pingdom, Lighthouse, and Google Performance were used. In addition, the research also offers the overall comparison of JavaScript frameworks including documentation quality, ability to develop mobile applications, learning curve, built-in features, etc. The results indicate that while React is accepted as the most popular frontend framework, Vue is the one that offers the best performance. The research also compares JavaScript frameworks by specific features they offer such as state management and analyses the implications of these features to the development process. According to the results, these features have big implications on the development process and they are very important when we are making decisions on which framework we will choose for some project.
Organizational Factors that Influence Information Security in Smes: A Case Study of Mogadishu, Somalia
Authors: Adan Hussein Hassan , Isak Abdirahman Mohamed Adam
Published: July 2024

Many organizations and businesses are currently dependent on information systems to conduct their business process and transactions. The security of the information being handled by systems has become a challenge in the corporate world today, as organizations strive to take measures to safeguard their information and maintain confidentiality. The study aimed to investigate the factors that influence information security in Small and medium-sized enterprises (SMEs) in Mogadishu Somalia. The study was guided by the following research objectives: such as organizational characteristics, data management practices, and employee characteristics in organizations that affect information security in SMEs in Mogadishu Somalia. A quantitative descriptive research design was used in this study, whereby the population consisted of 150 respondents which was focused on Owners, Managers, and Information Security Engineers of Small and Medium-sized enterprises (SMEs) in Mogadishu. Out of which a sample size of 140 respondents was obtained, spread out across three categories. The researchesr applied the probability method to select Owners, Managers, and Information Security Engineers from the Small and Medium Enterprises in Mogadishu Somalia. The elements selected from the population interacted with information security and were well-qualified to respond to the research objectives. The researches used self-administered structured questionnaires, whereby the respondents were required to point out the measure of appropriateness of the three main factors that influence information security in SMEs in Mogadishu. The questionnaire used a five-point Likert-type scale ranging from strongly disagree (1) to strongly agree (5). The respondents were also asked to indicate demographic information that comprised of Sex, age, level of education, years of experience, job position, and marital status, based on their perception and understanding. The study was a quantitative research design, whereby a total of one hundred and fifty (150) questionnaires were distributed and one hundred and fourty (140) were returned from the respondents, indicating a response rate of 99%. The analysis of the data was performed in a quantitative nature so as to obtain numerical data made use of descriptive and correlation statistics and was analyzed using SPSS software. The data was structured according to the research objectives and displayed in the form of tables.
The Role of Mitochondria in the Development of Nervous System Diseases and Mental Disorders
Authors: Deeb Hala , Perfilova V. N.
Published: July 2024

The review analyzed articles from the Pub- Med database mainly from the last 10 years, indicating the role of mitochondria in the development of diseases of the central nervous system and mental disorders. Mu- tations in mitochondrial/nuclear DNA genes, oxidative stress, impaired redox mechanisms, and regulation of mitochondrial dynamics have been found to cause mito- chondrial dysfunction. At the same time, the permeabil- ity of mitochondrial membranes changes, the influx of calcium ions increases, as a result of which the mem- brane potential shifts, oxidation processes become more intense, a large number of reactive oxygen species are formed, oxidative phosphorylation is disrupted, and the process of neuronal apoptosis starts. Mitochondrial dys- function is a common pathogenetic mechanism of Alz- heimer's and Parkinson's diseases, amyotrophic lateral sclerosis, Huntington's chorea, epilepsy, schizophrenia, etc. Discoveries and advances in molecular genetics have increased our understanding of the early pathology of mitochondrial disorders, enabled disease modeling, and provided entirely new perspectives on molecular pathogenesis. It is necessary that this research continues and then, in the near future, it will help develop the search for possible ways to treat the diseases that people suffer from.
Properties of Nuclear Star Clusters in Low Surface Brightness Galaxies
Authors: Khim Donghyeon J. , Zaritsky Dennis , Lambert Mika , Donnerstein Richard
Published: July 2024

Using the Systematically Measuring Ultra-Diffuse Galaxies and Sloan Digital Sky Survey catalogs and our own reprocessing of the Legacy Survey imaging, we investigate the properties of nuclear star clusters (NSCs) in galaxies having central surface brightnesses as low as 27 mag arcsec−2. We identify 273 (123 with known redshift) and 32 NSC-bearing galaxies in the two samples, respectively, where we require candidate NSCs to have a separation of less than 0.10r

e
from the galaxy center. We find that galaxies with low central surface brightness (μ
0,g
> 24 mag arcsec−2) are more likely to contain an NSC if they (1) have a higher stellar mass, (2) have a higher stellar-to-total mass ratio, (3) have a brighter central surface brightness, (4) have a larger axis ratio, or (5) lie in a denser environment. Because of the correlations among these various quantities, it is likely that only one or two are true physical drivers. We also find scaling relations for the NSC mass with stellar mass (M
NSC/

M
⊙

=

10

6.02
±
0.03

(

M

*
,
gal

/

10
8

M
⊙

)

0.77
±
0.04

) and halo mass (M
NSC/

M
⊙

=

10

6.11
±
0.05

(

M

h
,
gal

/

10
10

M
⊙

)

0.92
±
0.05

), although it is the scaling with halo mass that is consistent with a direct proportionality. In galaxies with an NSC, M
NSC ≈ 10−4
M

h,gal. This proportionality echoes the finding of a direct proportionality between the mass (or number) of globular clusters (GCs) in galaxies and the galaxy’s total mass. These findings favor a related origin for GCs and NSCs.
A Contact Binary Misclassified as an Ellipsoidal Variable: Complications for Detached Black Hole Searches
Authors: O’Doherty Tyrone N. , Bahramian Arash , Goodwin Adelle J. , Miller-Jones James C. A. , Orosz Jerome A. , Strader Jay
Published: July 2024

Identifying sources exhibiting ellipsoidal variability in large photometric surveys is becoming a promising method to search for candidate detached black holes (BHs) in binaries. This technique aims to exploit the orbital-phase-dependent modulation in optical photometry caused by the BH distorting the shape of the luminous star to constrain the mass ratio of the binary. Without understanding if, or how much, contamination is present in the candidate BH samples produced by this new technique it is hard to leverage them for BH discovery. Here, we follow up one of the best candidates identified from Gaia Data Release 3, Gaia DR3 4042390512917208960, with a radial velocity (RV) campaign. Combined photometric and RV modeling, along with spectral disentangling, suggests that the true mass ratio (the mass of the unseen object divided by the mass of the luminous star) is an order of magnitude smaller than that inferred assuming the modulations arise from ellipsoidal variability. We therefore infer that this system is likely a contact binary, or on the boundary of both stars nearly filling their Roche lobes; however, further observations are required to confidently detect the secondary. We find that the well-known problem of discriminating between ellipsoidal and contact binary light curves results in a larger contamination from contact binaries than previously suggested. Until ellipsoidal variables can be reliably distinguished from contact binaries, samples of BH candidates selected based on ellipsoidal variability are likely to be highly contaminated by contact binaries or similar systems.
Study of Double-mode RR Lyrae Stars in the Stripe 82 Region Using SDSS and ZTF
Authors: Varma Vaidehi , Ngeow Chow-Choong
Published: July 2024

RRd stars are a subclass of RR Lyrae stars that pulsate simultaneously in the fundamental and the first-overtone radial modes. We report the analysis of 10 RRd stars discovered in the Sloan Digital Sky Survey (SDSS) Stripe 82 region of the Galactic halo using SDSS and Zwicky Transient Facility data. By combining the two data sets, we constructed ∼23 yr long lightcurves in gri bands, and conclude that out of 10, 9 were the classical RRd stars and 1 was the anomalous RRd star. We also observed the long-term variation, the Blazhko effect, in 3 classical RRd stars out of 10 stars, giving an incidence rate of 30%. The shortest Blazhko period observed was 226.4 ± 0.8 days and the longest was 2799 ± 75 days.
Reconstruction of Cosmic Black Hole Growth and Mass Distribution from Quasar Luminosity Functions at z > 4: Implications for Faint and Low-mass Populations in JWST
Authors: Li Wenxiu , Inayoshi Kohei , Onoue Masafusa , He Wanqiu , Matsuoka Yoshiki , Pan Zhiwei , Akiyama Masayuki , Izumi Takuma , Nagao Tohru
Published: July 2024

The evolution of the quasar luminosity function (QLF) is fundamental to understanding the cosmic evolution of black holes (BHs) through their accretion phases. In the era of the James Webb Space Telescope (JWST), Euclid, and Nancy Grace Roman Space Telescope, their unprecedented detection sensitivity and wide survey area can unveil the low-luminosity quasar and low-mass BH population, and provide new insights into quasar host galaxies. We present a theoretical model describing BH growth from initial seeding at z ≳ 20 to ∼ 4, incorporating the duration of accretion episodes, the distribution of Eddington ratios, and the mass dependency of BH accretion rates. By constraining the model parameters with the observed QLFs at 4 ≤ z ≤ 6 across a wide UV luminosity range, we find that the high-redshift BH population grows rapidly at z ≳ 6, and decelerates the pace in subsequent epochs. Toward lower redshifts (z < 6), mass-dependent accretion inhibits the growth of high-mass BHs with M
• > 108
M
⊙, leading to mass saturation at M
• ≳ 1010
M
⊙. We predict the BH mass function down to M
• ∼ 106
M
⊙ for both unobscured and obscured quasar populations at 4 ≤ z ≤ 11, offering a benchmark for future observational tests. Our model accounts for the presence of both bright and faint quasars at z > 4, including those discovered by JWST. Furthermore, our findings suggest two distinct pathways for the early assembly of the BH–galaxy mass correlation: the population with a BH-to-stellar-mass ratio near the local value of M
•/M
⋆ ≃ 5 × 10−3 maintains proximity to the relation via moderate growth, while the population that begins to grow above the local relation becomes as overmassive as M
•/M
⋆ ∼ 0.01–0.1 by z ∼ 6 via rapid mass accretion.
Comparing the VANDELS Sample to a Zoom-in Radiative Hydrodynamical Simulation: Using the Si ii and C ii Line Spectra as Tracers of Galaxy Evolution and Lyman Continuum Leakage
Authors: Gazagnes Simon , Cullen Fergus , Mauerhofer Valentin , Begley Ryan , Berg Danielle , Blaizot Jeremy , Chisholm John , Garel Thibault , Leclercq Floriane , McLure Ross J. , Verhamme Anne
Published: July 2024

We compare mock ultraviolet C ii and Si ii absorption and emission line features generated using a ∼109
M
⊙ virtual galaxy with observations of 131 z ∼ 3 galaxies from the vandels survey. We find that the mock spectra reproduce reasonably well a large majority (83%) of the vandels spectra (χ
2 < 2), but do not resemble the most massive objects (⪆1010
M
⊙), which exhibit broad absorption features. Interestingly, the best-matching mock spectra originate from periods of intense star formation in the virtual galaxy, where its luminosity is 4 times higher than in periods of relative quiescence. Furthermore, for each galaxy, we predict the Lyman continuum (LyC) escape fractions (

f

esc

(
pred
)

LyC

) using the environment of the virtual galaxy. We derive an average

f

esc

(
pred
)

LyC

of 0.01 ± 0.02, consistent with other estimates from the literature. The

f

esc

(
pred
)

LyC

are tightly correlated with the Lyα escape fractions and highly consistent with observed empirical trends. Additionally, galaxies with larger

f

esc

(
pred
)

LyC

exhibit bluer β slopes, more Lyα flux, and weaker low-ionization absorption lines. Building upon the good agreement between

f

esc

(
pred
)

LyC

and observationally established LyC diagnostics, we examine the LyC leakage mechanisms in the simulation. We find that LyC photon leakage is enhanced in directions where the observed flux dominantly emerges from compact regions depleted of neutral gas and dust, mirroring the scenario inferred from observational data. In general, this study further highlights the potential of high-resolution radiation hydrodynamics simulations in analyzing UV absorption and emission line features and providing valuable insights into the LyC leakage of star-forming galaxies.
Binding Energies of N-bearing Species on Interstellar Water Ice Mantles by Quantum Chemical Calculations
Authors: Martínez-Bachs Berta , Ferrero Stefano , Ceccarelli Cecilia , Ugliengo Piero , Rimola Albert
Published: July 2024

Of the about 300 gas-phase molecular species so far detected in the interstellar medium (ISM), mostly via observations of their rotational lines, around 40% contain nitrogen (N) atoms. Likewise, of the less than a dozen interstellar molecules, firmly or likely detected in the solid-state water-dominated icy matrix by means of infrared observations, two bear N. A crucial parameter that regulates whether a species is in the gas or adsorbed on the icy phase is their binding energy (BE) toward the icy grain. Therefore, an accurate quantification of the BE is of paramount importance to properly model the ISM chemistry through numerical models. However, very few BEs are available in the literature, either determined experimentally or theoretically. In the present study, we calculate the BEs of 21 among the most abundant interstellar N-bearing species. We adopted two structural water ice models, representing a crystalline and an amorphous surface, using a reliable cost-effective procedure based on the density functional theory. While on the crystalline surface model only one BE per species is obtained due to the high symmetry of the unit cell, on the amorphous model from 5 to 10 BEs are obtained, due to its richer surface morphological variety. Most of our computed BEs agree with available experimental and other computational values. Finally, we discuss how the newly computed BEs can help estimate which N-bearing species can be frozen at the water snow line and, therefore, incorporated in water-rich ice planetesimals.
The 2018 Outburst of MAXI J1820+070 as Seen by Insight-HXMT
Authors: Fan Ningyue , Li Songyu , Zhan Rui , Liu Honghui , Zhang Zuobin , Bambi Cosimo , Ji Long , Ma Xiang , Steiner James F. , Zhang Shuang-Nan , Zhou Menglei
Published: July 2024

We present an analysis of the whole 2018 outburst of the black hole X-ray binary MAXI J1820+070 with Insight-HXMT data. We focus our study on the temporal evolution of the parameters of the source. We employ two different models to fit the disk’s thermal spectrum: the Newtonian model diskbb and the relativistic model nkbb. These two models provide different pictures of the source in the soft state. With diskbb, we find that the inner edge of the disk is close to the innermost stable circular orbit of a fast-rotating black hole and the corona changes geometry from the hard to the soft state. With nkbb, we find that the disk is truncated in the soft state and that the coronal geometry does not change significantly during the whole outburst. However, the model with nkbb can predict an untruncated disk around a fast-rotating black hole if we assume that the disk inclination angle is around 30° (instead of ∼60°, which is the inclination angle of the jet and is usually adopted as the disk inclination angle in the literature) and we employ a high-density reflection model. In such a case, we measure a high value of the black hole spin parameter with observations in the soft state, in agreement with the high spin value found from the analysis of the reflection features and in disagreement with the low spin value found by previous continuum-fitting method measurements with the disk inclination angle set to the value of the jet inclination angle.
Frequency-dispersed Ion Acoustic Waves in the Near-Sun Solar Wind: Signatures of Impulsive Ion Beams
Authors: Malaspina David M. , Ergun Robert E. , Cairns Iver H. , Short Benjamin , Verniero Jaye L. , Cattell Cynthia , Livi Roberto
Published: July 2024

This work reports a novel plasma wave observation in the near-Sun solar wind: frequency-dispersed ion acoustic waves. Similar waves have previously been reported in association with interplanetary shocks or planetary bow shocks, but the waves reported here occur throughout the solar wind sunward of ∼60 solar radii, far from any identified shocks. The waves reported here vary their central frequency by factors of 3–10 over tens of milliseconds, with frequencies that move up or down in time. Using a semiautomated identification algorithm, thousands of wave instances are recorded during each near-Sun orbit of the Parker Solar Probe spacecraft. Wave statistical properties are determined and used to estimate their plasma frame frequency and the energies of protons most likely to be resonant with these waves. Proton velocity distribution functions are explored for one wave interval, and proton enhancements that may be consistent with proton beams are observed. A conclusion from this analysis is that properties of the observed frequency-dispersed ion acoustic waves are consistent with driving by cold, impulsively accelerated proton beams near the ambient proton thermal speed. Based on the large number of observed waves and their properties, it is likely that the impulsive proton beam acceleration mechanism generating these waves is active throughout the inner heliosphere. This may have implications for the acceleration of the solar wind.
Searching for Short-period Variables in M31: Method and Catalogs
Authors: Gu 顾 Hongrui 弘睿 , Yuan 苑 Haibo 海波 , Dong 东 Subo 苏勃 , Zheng 郑 Chenfa 晨发 , Cui 崔 Shenzhe 深哲 , Ren 任 Yi 逸 , Fu 付 Haozhu 皓竹 , Huang 黄 Yang 样 , Fan 范 Zhou 舟
Published: July 2024

Utilizing high-cadence and continuous g- and r-band data over three nights acquired from the 3.6 m Canada–France–Hawaii Telescope, aiming to find short-duration microlensing events, we conduct a systematic search for variables, transients, and asteroids across a ∼1° field of view of the Andromeda galaxy (M31). We present a catalog of 5859 variable stars, yielding the most extensive compilation of short-period variable sources of M31. We also detected 19 flares, predominantly associated with foreground M dwarfs in the Milky Way. In addition, we discovered 17 previously unknown asteroid candidates, and we subsequently reported them to the Minor Planet Center. Lastly, we report a microlensing event candidate C-ML-1 and present a preliminary analysis.
Systemic Sclerosis Sine Scleroderma: A Time of Reappraisal
Authors: Makris Anastasios , Panagiotopoulos Alexandros , Distler Oliver , Sfikakis Petros P.
Published: July 2024

Objective

Systemic sclerosis sine scleroderma (ssSSc), formally described in 1962, is a subset of SSc that, unlike limited cutaneous (lcSSc) and diffuse cutaneous (dcSSc) forms, lacks skin fibrosis. According to the 2013 American College of Rheumatology/European Alliance of Associations for Rheumatology criteria, SSc can be diagnosed in the absence of skin thickening, even if this is expected to develop later in disease course. Driven by a fatal case of ssSSc with cardiac involvement, we analyzed published data on ssSSc prevalence and severity.

Methods

A systematic literature review and qualitative synthesis of SSc cohorts with data on ssSSc were performed.

Results

Thirty-five studies involving a total of 25,455 patients with SSc, published between 1976 and 2023, were identified. Although different definitions were used, the mean prevalence of ssSSc was almost 10% (range 0-23%), with the largest study reporting a cross-sectional prevalence of 13%. In 5 studies with a follow-up period of up to 9 years, reclassification of ssSSc into lcSSc or dcSSc ranged 0-28%. Interstitial lung disease, pulmonary arterial hypertension, scleroderma renal crisis, and cardiac diastolic dysfunction were present in 46% (range 9.3-59.1%), 15% (range 5.9-24.6%), 5% (range 1.6-24.6%), and 26.5% (range 1.8-40.7), respectively, of patients with ssSSc. Survival across studies was comparable to lcSSc and better than dcSSc.

Conclusion

Published data on ssSSc vary widely on prevalence, clinical expression, and prognosis, partly due to underdiagnosis and misclassification. Although classification criteria should not affect appropriate management of patients, updated ssSSc subclassification criteria that takes into account time from disease onset should be considered.
Les grandes évolutions de l’enseignement supérieur vues par la statistique publique : dynamique des effectifs, mobilité, insertion professionnelle
Authors: Tallet Frédéric
Published: July 2024

Les statistiques publiques, qu’elles soient anciennes et relativement frustes ou plus récentes et innovantes, aident à mieux comprendre quelles ont été les grandes évolutions qui ont façonné l’enseignement supérieur depuis le siècle dernier. Pour la période actuelle, elles permettent à tous les acteurs d’étayer les choix individuels ou les décisions publiques. Portée par l’accès massif au baccalauréat, la démocratisation de l’accès aux études supérieures est un phénomène majeur des soixante dernières années.
Construire des parcours au plus près des territoires
Authors: Nembrini Jean-Louis
Published: July 2024

En matière d’éducation, les lois successives de décentralisation ont séparé les compétences pédagogiques qui relèvent du régalien et les compétences techniques, bâtimentaires ou d’équipement, qui relèvent des collectivités territoriales. En conséquence, communes, départements et régions sont tenus en lisière de la conception – et très largement de l’exécution – des politiques nationales d’éducation, même lorsque ces dernières concernent étroitement leurs territoires. Pourtant, les compétences des régions justifient leur volonté de prendre part à la conception de politiques permettant des parcours moins heurtés, au bénéfice notamment des poursuites d’études, du secondaire au supérieur, dans les domaines technologique et professionnel.