bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation of critical load of structures using modified energy method in nonlinear-geometry solid mechanics problems
Authors: Razaghi Ahmad , Marnani Jafar Asgari , Rohanimanesh Mohammad Sadegh 
Published: December 2022

Abstract
Geometrically nonlinear analysis is required for resolving issues such as loading causes failure and structure buckling analysis. Although numerical methods are recommended for estimating the exact solution, they lack the necessary convergence in the presence of bifurcation points, making it challenging to find the equilibrium path using these methods. Thus, the modified energy method is employed instead of the numerical method, frequently used to solve quasi-static problems with nonlinear nature and bifurcation points. The ultimate goal of this study is to determine the critical load of structures through the modified energy method rather than other methods in which the relationship between force, displacement, and constraint is used to solve the problem. This study first describes the energy method for this type of problem and then details its computational steps progressively. This method yields numerical results when applied to numerical examples such as truss and frame structures and coded in MATLAB software. These findings are compared to the analytical results. The energy method is more precise than the alternative methods and superior to the Newton–Raphson method at crossing the load–displacement curve’s bifurcation points.
Relationship of potato yield and factors of influence on the background of herbological protection
Authors: Shuvar Ivan , Korpita Hanna , Shuvar Antin , Shuvar Bogdan , Balkovskyi Volodymyr , Kosylovych Halyna , Dudar Ivan 
Published: December 2022

Abstract
The latest technologies for growing crops, including potatoes, are based on the use of modern mathematical models that can fairly accurately identify the impact of various factors of natural and technological nature on the object of study. Yield modeling makes it possible to adjust resource consumption indicators to obtain the maximum economic effect and minimize the negative impact on the environment. It was found that the lowest weediness of potato agrocenosis (24 pcs/m2) was formed by the complex application of Hezagard (4 L ha−1) and Panthera (1 L ha−1). The lowest level of actual weeds infestation had a positive effect on the yield of tubers – 27.6 t ha−1 (+26.6% to control) and was obtained in the variant of herbicide application. The results of correlations of potato tuber yield from factors such as weediness, density and productive moisture reserves in the arable soil layer are highlighted. It was found that the highest yield of 27.6 t ha−1 (+26.6% compared to the control) was obtained in the variant with the application of herbicides Hezagard (4 L ha−1) and Panthera (1 L ha−1). According to the results of multiple regression, it was found that the coefficient of multiple correlation is R = 0.9985, and the coefficient of determination is R = 0.997, i.e., the relationship between potato yield and experimental factors is quite close.
El “Estado del arte”* de las Relaciones Públicas y de la Comunicación organizacional: Portugal en el contexto europeo: un primer enfoque
Authors: Ferreira Félix Mateus Anabela 
Published: December 2022

En el presente artículo analizamos los câmbios que las Relaciones Públicas y la Comunicación Organizacional han sufrido a lo largo de los años en Portugal y su integración en Europa. Realizamos un análisis en la Enseñanza Superior en Portugal y comparamos el panorama ante y post Bolonia. Nos focamos en disertacionés de Máster y tesis de Doctorado.Analizamos el âmbito associativo-profesional y el papel de la academia en las asociacionés.Intentamos conocer la actualidad de la Consultoria en el País.Recurrimos a plantillas teóricas de investigación en el acompañamiento de la evolución de las Ciencias de la Comunicacion que fundamentan hoy una ciência compleja conjunta de campos teóricos y empíricos.Nos basamos en el análisis documental, entrevistas y experiencia personal.Hacemos análisis aplicado sobre la investigación realizada con disertaciones de Master y tesis de Doctorado, post-Bolonia.En términos de Conclusionés entendemos que las RP se mantienen carentes de définición.Encontramos designaciones com definiciones y tratamento científico en el ámbito de las Ciências de la Comunicación y de la Gestión, utlilizadas indiscriminadamente en la prática de la gestión empresarial, com diversas tareas atribuídas.Relativamente a la investigación y produción científica, la estruturación traída por el proceso de Bolonia proporcionou un aumento de investigación con realización de disertacionés de Master e incentivo a doctorados por parte del cuerpo docente activo com financiaciones generadas. Pero son proyetos individuales vigentes, com focos de interés reducido y punctual, muchas veces solapados en distintas unidades de investigación, con falta de interés científico global.El presente estudio contempla la profundización y la fundamentación científica a realizar.
Indicadores mediáticos: herramientas para la participación ciudadana y el acceso a la información
Authors: De-Frutos-García Ruth 
Published: December 2022

Desde los años setenta del siglo pasado diversas organizaciones internacionales han aumentado su interés por crear instrumentos de medición de la realidad. En el ámbito de la comunicación, entidades sin ánimo de lucro como los de FreedomHouse, Reporteros Sin Fronteras o IREX generaron indicadores. En 2008, el Consejo Intergubernamental del Programa Internacional para el Desarrollo de laComunicación (PIDC) en su sesión XXVI (26-28 marzo 2008) aprobó los Indicadores de desarrollo mediático (IDM). Marco para evaluar el desarrollo de los medios de comunicación social. En ellos, la participación ciudadana y el acceso a la información se consolidaban con instrumentos imprescindibles del discurso democrático. El presente artículo tiene como objetivo principal realizar un análisis crítico de los IDM, prestando especial atención a estos dos aspectos: la participación ciudadana y el acceso a la información. Para alcanzar dicha finalidad se ha planteado un diseño multimétodo (Cresswell, 2014) que se divide en varias fases sucesivas con el propósito de que la metodología elegida se adecúe a la compleja naturaleza del objeto de estudio. En primer lugar, seha realizado una profusa revisión documental, a continuación se ha aplicado uncuestionario a un panel de expertos formado por informantes que han participado en la definición, aplicación y análisis crítico de distintos indicadores para, en una última etapa, ahondar en los hallazgos obtenidos mediante entrevistas en profundidad. Entre los principales resultados de la investigación destaca la divergencia que existe entre las declaraciones de valores que aparecen en el documento de UNESCO, con las prácticas oscurantistas y presiones políticas de los estados miembros para dificultar, precisamente, el correcto desarrollo de la participación ciudadana y el acceso a la información.
Research and Revisions in AS/NZS 1170.2 - 2021
Authors: Ginger John , J.D. Holmes  
Published: December 2022

This paper summarises activities in the area of Wind-Structural Engineering in Australia between 2012 and 2021, including the work, carried out for Standards Australia and research at Universities in Australia. The main changes are; the redefinition of wind regions and the recalculation of wind direction multipliers in Section 3, refinement of terrain height, shielding and topographic multipliers in Section 4, inclusion of an open area volume factor for internal pressure and changes to the local pressure factor and area reduction factors in Section 5, new data for along-wind and cross-wind response of slender structures in Section 6, and revised data for curved roofs and new data for open conical roofs and ground mounted solar panel arrays in the Appendices. These revision are based on research carried out in this period.
Pemodelan Laju Perubahan Nilai Tukar Rupiah (IDR) terhadap Dolar Amerika (USD) dengan Metode Markov Switching Autoregressive (MSAR)
Authors: Yurinanda Sherli , Putri Darvi Mailisa 
Published: December 2022

This study aims to determine the modeling of the exchange rate change rate of the Rupiah (IDR) against the US dollar (USD) using the Markov Switching Autoregressive (MSAR) method. The research data is sourced from secondary data through website investing to see the Rupiah exchange rate against the US dollar with a time span from January to December 2020. The results show that the best model obtained is MS(2)AR(3) with parameters = 0.031119 and = -0.000504, where when state = 1, the average rate of change in the rupiah exchange rate against the US dollar is 0.031119 per day, while when state = 2 the average rate of change in the rupiah exchange rate against the US dollar is -0.000504 per day.
Pemodelan Harga Saham Menggunakan Geometric Brownian Motion
Authors: Ul Hasanah Fitri Rahmah , Putri Darvi Mailisa 
Published: December 2022

Stocks are something that is still interesting to this day to be discussed. Because the price tends to fluctuate, it is necessary to make predictions for the future in order to reduce losses for investors. Geometric Brownian Motion is a model for predicting stock prices by conducting a study through stock return data obtained. Stock return data is required to meet the assumptions of Geometric Brownian Motion. After that, the average value and volatility of the stock return data of PT. Aneka Tambang Tbk. from January 04th to June 30th 2021 amounted to -0,002376925 and 0,0212161. Through stock return parameters and data generation with a standard normal distribution, a model that is very close to the actual stock price data is obtained.
Hipertrofia ventricular izquierda diagnosticada con ecocardiograma transtorácico y su relación con los cambios electrocardiográficos
Authors: García Rusca Alexander , Jacquin Serna Olga , Saad Cure Carlos , Rojano Rada Jairo 
Published: December 2022

Objetivo: Evaluar la hipertrofia ventricular izquierda diagnosticada con ecocardiograma transtorácico y su relación con los cambios electrocardiográficos. Métodos: Se realizó un estudio observacional analítico, en los pacientes atendidos por el servicio de cardiología en el Hospital General de Barranquilla MiRed IPS, durante octubre de 2020 a marzo de 2021. Resultados: De un total de 111 pacientes, el 63,1% (n=70) correspondieron al sexo femenino, la edad promedio fue de 64,1 ± 11,8; el 21.6 % (n=24) presentaban hipercolesterolemia, el 26.1% (n=29) realizaban caminatas 3h semanales, y el 44.1% (n=49) eran obesos. El 90,1% (n=100) recibían tratamiento, siendo el losartan el de mayor uso con un 52,3% (n=58), el 77.5% (n=86) cumplía con el tratamiento, y el 67,6% (n=75) mostro valores normales de creatinina 0-1,0 mg/dL. Se estableció una diferencia significativa entre las categorías de los patrones electrocardiográficos, el 39,0% (n=30) con hipertrofia ventricular izquierda presentaron una pobre progresión de la onda R en V3 (p< 0.000), y aquellos que no mostraron hipertrofia ventricular izquierda, tenían otros hallazgos electrocardiográficos 67,6% (n=67), (p< 0.000). Los pacientes con patrón de hipertrofia concéntrica correspondieron el 76,6% (n=59), (p< 0.000) aquellos con hipertrofia excéntrica tenían el registro electrocardiográfico con índice de Sokolow-Lyon 16,2% (n=18). Ninguno de los hallazgos electrocardiográficos fue lo suficientemente exacto en la estimación de la hipertrofia ventricular izquierda. Conclusión: Se reportan en este estudio baja sensibilidad en los índices electrocardiográficos para el diagnóstico de hipertrofia ventricular izquierda con una gran diferencia en su poder diagnostico respecto al ecocardiograma.
El papel de la epigenética en la artritis reumatoide
Authors: Chimá Bustillo Silvana Margarita , Chacón Guerra Marco Antonio , Saavedra Ruiz Jorge Andrés , Núñez Ospino Alejandro Alberto 
Published: December 2022

La artritis reumatoide (AR) es una enfermedad de carácter autoinmune, que suele asociarse a la presencia de autoanticuerpos; pese a décadas de estudio, su etiología aún no está clara. En la actualidad, la investigación en torno a la AR está muy influenciada por el campo de la epigenética, con lo cual se han podido establecer asociaciones prometedoras, pudiéndose señalar que las modificaciones epigenéticas juegan un papel importante en la patogenia de la AR. En este sentido, se hace necesario ampliar el conocimiento acerca de las estas modificaciones en la AR, considerando que pueden ofrecer un mayor entendimiento de la fisiopatología de la enfermedad influenciando positivamente en prevención, diagnóstico y nuevas dianas terapéuticas. Con el propósito de profundizar en las modificaciones epigenéticas de la AR se consultaron distintas fuentes bibliográficas de base científica, seleccionando los artículos más relevantes y con amplia evidencia respecto al tema.
"Hieroglify antropocenu". Casus twórczości Lecha Majewskiego
Authors: Grodź Iwona 
Published: December 2022

Tematem eseju jest analiza wartościowania antropocenu w tekstach kultury (film), ujmowana zarówno w znaczeniu dosłownym, jak i metaforycznym oraz jego reprezentacja na przykładzie wybranych dzieł Lecha Majewskiego (ur. 1953).
Głównym celem rozważań jest wskazanie synergii człowieka z jego otoczeniem (zob. humanistyka środowiskowa), we wskazanej twórczości, w aspekcie semiotycznym i kulturowym. Pozwala to lepiej zrozumieć postawę autora Doliny Bogów (2019) wobec transformacji XXI wieku.
High school students' mathematical proficiency based on mathematics anxiety and cognitive independence
Authors: Rahman Muhammad Syarifuddin , Juniati Dwi , Manuharawati Manuharawati 
Published: December 2022

Mathematical proficiency is the ability to use conceptual understanding, procedural fluency, strategic competence, adaptive reasoning, and productive disposition in problem-solving. This study aims to determine the effect of mathematics anxiety level and cognitive independence level on mathematical proficiency. This research combined quantitative and qualitative methods to determine the effect of mathematics anxiety and cognitive independence on mathematical proficiency. It used the multiple linear regression test for the quantitative approach. Moreover, the qualitative approach was used to see the effect of anxiety level and cognitive independence on mathematical proficiency. One hundred fifty-five high school students participated in this study, and it was found that mathematics anxiety affects mathematical proficiency negatively while cognitive independence affects mathematical proficiency positively. Students who have high mathematics anxiety use trial and error strategies, while their counterparts, having low mathematics anxiety, use analytical strategies. Students with high cognitive independence can process the information and tend to be independent, while those with low cognitive independence do so illogically and tend to need help from others. The results of this study are hoped to be beneficial for teachers in choosing learning methods.
Keywords: analytical strategy; cognitive independence; mathematical proficiency; mathematics anxiety; trial-error strategy;
How does the principal's policy respond to professional learning during the COVID-19 pandemic?
Authors: Suryaningsi Suryaningsi , Nurlaili Nurlaili , Siringoringo Meiliyani , Mulawarman Widyatmike Gede 
Published: December 2022

The study aims to investigate the policies carried out by school principals so that learning continues professionally during the COVID-19 pandemic. This research was conducted with a phenomenological approach in a qualitative descriptive type involved 33 teachers as respondents who were interviewed in depth. This study focuses on school readiness, internal and external factors that hinder online learning, and the role of principals in junior high school. The results of this study are as follows: first, the determinants of school readiness in facing online learning in the early days of the COVID-19 pandemic are student readiness, teacher readiness, infrastructure readiness and management readiness. Second, internal and external factors are obstacles for the school, but do not turn a blind eye and try to overcome them. Third, the role of the principal starts from the technology and media used, teacher empowerment, future programmes, training and collaboration with parties outside the school, where the principal's role is to maximise the abilities, including the potential of teachers to remain professional. This research can be piloted at the high school level or elementary school level.
Keywords: Policy, principal, online learning, COVID-19 pandemic, technology.
A comparative study of the Jigsaw and Chalk-and-Talk Methods on grade 12 learners’ achievements in reaction rates in South Africa
Authors: Kibirige Israel , Lehong Moyahabo Jeridah 
Published: December 2022

The study compared the Jigsaw Method and the Chalk-and-Talk methods of learners’ achievements in grade 12 reaction rates. A quasi-experimental design was used, with two classes of 44 learners, one class of 21 as the experimental group and another with 23 as the control group. Data were collected using Achievements Test for pre-test and post-tests and analysed using percentages, Means, Standard Deviations, t-tests and Analysis of Covariance. The post-test results from EG using Jigsaw Method and the control group using the Chalk-and-Talk show significant differences. Analysis of Covariance shows significant effects between experimental and control groups post-test using pre-test covariate. The experimental group outperformed the control group, and the former had no significant differences in gender achievements, suggesting Jigsaw Method favours both genders. The experimental group learners had minimal misconceptions compared to the control group. Thus, the Jigsaw Method enabled experimental group learners to overcome difficulties and misconceptions.
Keywords: : Cooperative learning, conceptual understanding, learners’ achievements
IMPLEMENTASI LITERASI DIGITAL DALAM PEMBELAJARAN DARING
Authors: Aini Fitria Nur 
Published: December 2022

ABSTRACTThis article seeks to present learning problems that have plagued several schools due to the Covid19 pandemic. Awareness of digital literacy becomes a necessity during learning needs carried out with online learning methods. By taking the research object at Sedati Gede II State Elementary School, Sidoarjo, this study will answer several research questions as follows: How to plan the implementation of digital literacy in online learning during Covid-19 at SDN Sedati Gede II, Sidoarjo?; How is the process of implementing digital literacy implementation in online learning during Covid-19 at SDN Sedati Gede II, Sidoarjo?; How is the evaluation and results of the implementation of digital literacy in online learning during Covid-19 at SDN Sedati Gede II, Sidoarjo?
ABSTRAKArtikel ini berusaha menyajikan persoalan pembelajaran yang melanda beberapa sekolah akibat pandemi Covid-19. Kesadaran literasi digital menjadi suatu keharusan ditengah-tengah keharusan pembelajaran yang dilakukan dengan metode pembelajaran online. Dengan mengambil objek penelitian pada Sekolah Dasar Negeri Sedati Gede II, Sidoarjo, penelitian ini akan menjawab beberapa pertanyaan penelitian sebagai berikut: Bagaimana perencanaan implementasi literasi digital dalam pembelajaran daring pada masa Covid-19 di SDN Sedati Gede II, Sidoarjo?; Bagaimana proses pelaksanaan implementasi literasi digital dalam pembelajaran daring pada masa Covid-19 di SDN Sedati Gede II, Sidoarjo?; Bagaimana evaluasi serta hasil implementasi literasi digital dalam pembelajaran daring pada masa Covid-19 di SDN Sedati Gede II, Sidoarjo?
ANALISIS DRAMATURGI GURU PENJUAL PUPUK BERSUBSIDI DALAM PRESPEKTIF ERVING GOFFMAN
Authors: Syah Mohamad Sabilli Firman 
Published: December 2022

ABSTRACTThe purpose of this study is to analyze and describe the social life of a teacher who has a business as a seller of subsidized fertilizer in the perspective of dramaturgy theory proposed by Erving Goffman. This research uses descriptive qualitative method with the type of case study research. Collecting data through direct interviews with relevant informants and documentation carried out at schools and at the informants' homes. Data analysis used the Milles and Huberman model with three steps, namely data reduction, data presentation, and drawing conclusions. The results of this study explain that according to the dramaturgical theory analysis, a teacher's social life is divided into: 1) Front stage: A teacher who is known to have a firm and wise attitude at school, because of his attitude the teacher has been a headmaster for 12 years. 2) Back stage: The teacher's social life is known as a simple person, relaxed in dress, and highly respects etiquette towards people. 3) Outside: The teacher is very persistent in entrepreneurship so he has several businesses at home.
ABSTRAKPenelitian ini bertujuan untuk menganalisis dan mendiskripsikan kehidupan sosial seorang guru yang memiliki usaha sebagai penjual pupuk bersubsidi dalam prespektif teori dramaturgi yang dikemukakan oleh erving Goffman. Penelitian ini menggunakan metode kualitatif deskriptif dengan jenis penelitian studi kasus. Pengambilan data melalui wawancara secara langsung dengan informan terkait dan dokumentasi yang dilakukan di sekolah dan di rumah informan. Analisis data menggunakan model Milles and Huberman dengan tiga ;angkah yakni reduksi data, penyajian data, dan penarikan kesimpulan. Hasil dari penelitian ini menjelaskan sesuai dengan analisis teori dramaturgi kehidupan sosial seorang guru terbagai menjadi : 1) Front stage : Seorang guru yang dikenal memiliki sikap yang tegas dan bijaksana di sekolah,karena sikapnya itu guru tersebut pernah menjadi kepala sekolah selama 12 tahun. 2) Back stage : Kehidupan sosial guru tersebut dikenal sebagai pribadi sederhana, santai dalam berpakaian, dan sangat menjunjung tinggi tata krama terhadap orang. 3) Outside : Guru tersebut sangat gigih berwirausaha sehingga memiliki beberapa usaha dirumahnya.
HISTORY PERADABAN ISLAM PADA MASA DAULAH UMAYYAH
Authors: Hafidhatun Nisaa' Intan 
Published: December 2022

ABSTRACT
This paper discusses Islamic civilization during the Umayyad State in Andalusia. The Umayyad State is the first Islamic caliphate after Khulafaur Rashidin or the second Islamic caliphate after the reign of Rasulullah SAW. The Umayyad State was founded by Muawiyah Ibn Abu Sufyan in 661 M in Damascus (as the center of his government). After the collapse of the Umayyad rule in Damascus, the Umayyad State succeeded in rising and ruling in Andalusia, with Abdurrahman ad-Dakhil as the first caliph. At first, this government was led by an amir, but during the reign of Abdurrahman III changed to caliph. When Islam entered Andalusia, the country experienced rapid progress both in terms of civilization and education. In the process of writing, the author uses a qualitative method by using literacy sources to collect the necessary data.
Keywords: Andalusia; Islamic Civilization; the Umayyad State
ABSTRAK
Tulisan ini membahas tentang peradaban Islam pada masa Daulah Umayyah di Andalusia. Daulah Umayyah adalah kekhalifahan Islam pertama setelah Khulafaur Rasyidin atau kekhalifahan Islam kedua setelah pemerintahan Rasulullah SAW. Daulah Umayyah didirikan oleh Muawiyah Ibn Abu Sufyan pada tahun 661 M di Damaskus (sebagai pusat pemerintahannya). Setelah runtuhnya pemerintahan Umayyah di Damaskus, daulah Umayyah berhasil bangkit dan berkuasa di Andalusia, dengan Abdurrahman ad-Dakhil sebagai khalifah pertama. Pada mulanya, pemerintahan ini dipimpin oleh seorang amir, namun ketika masa pemerintahan Abdurrahman III berubah menjadi khalifah. Ketika Islam memasuki Andalusia, negeri ini mengalami kemajuan yang pesat baik dari segi peradaban maupun pendidikannya. Dalam proses penulisannya, penulis menggunakan metode kualitatif dengan menggunakan sumber literasi untuk mengumpulkan data-data yang diperlukan.
Kata-Kata Kunci: Andalusia; Daulah Umayyah; Peradaban Islam