bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling and Simulation of Renewable Energy Sources by Markov Chains
Authors: M. A. S. G. Araujo  , G. A. Melo  , S. C. A. Ferreira  , R. C. Souza  , F. L. Cyrino Oliveira  , P. M. M.  Louro
Published: August 2022

The increased participation of renewable variable energy sources (RVS) in the Brazilian electricity matrix brings several challenges to the planning and operation of the Brazilian Electricity System (BES) due to the stochasticity present in RVS. Such challenges involve the modeling and simulation of intermittent generation processes. In this context, this work aims to simulate power generation scenarios of three Brazilian plants, each based on three distinct renewable sources: wind power, solar, and biomass. The methodology used is based on the modeling of historical time series by Markov Chains, and the generation of scenarios is performed by Monte Carlo simulation. The results obtained are promising: the simulated scenarios satisfactorily reproduced the characteristics of the historical generation data of the plants.
Seismic low-frequency shadow detection based on the Levenberg-Marquardt reassignment operators using S-transforms
Authors:   Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran., Anvari Rasoul , Hussein Mohammed Adil ,   Department of Communication and Computer Engineering, College of Engineering, Cihan University-Erbil, Iraq, Rashidi Shima ,   Department of Computer Science University of Human Development sulaymaniyah, Iraq
Published: August 2022

Based on the phenomenon of low-frequency shadow beneath the oil and gas reservoirs, there is much theoretical research and practical production data. Therefore, accurate detection of the low-frequency shadow in order to predict reservoir. The high-precision detection time-frequency transform in this paper is achieved by adding Levenberg-Marquardt reassignment operators using S-transforms to adjust the window width adaptively according to the characteristics of different signal components. Finally, it optimizes the time-frequency distribution. Simulation results show that this method has a better time-frequency concentration than conventional methods. Finally, an application of this method in detecting low-frequency shadow verifies the effectiveness and feasibility, which provides a high-precision tool and means for reservoir prediction.
Pandangan Islamic Economic Ethics Terhadap Dimensi Individualisme Dalam Ekonomi Kapitalis
Authors: Bin Lahuri Setiawan , Fadhilah Lamya Nurul , Kamaluddin Imam
Published: August 2022

Monopolies and stockpiling in business are clear evidence of human greed stemming from capitalist individualism. Despite the bad impact, the majority of people will prefer and support individual freedom without being limited by regulations. Thus, amid intense competition in the capitalist economy, Islamic ethics is present in the business environment to provide guidance and offer approaches that are in line with the ethical values ​​adopted by society. This study aims to find out: 1) the similarities and differences between individualism in capitalism and Islam, 2) the moral views of Islamic economics on capitalist individualism. The research method uses descriptive qualitative and the main variables in this study are capitalist individualism and Islamic economic ethics. Based on the results of the research analysis shows that: 1) Mostly, the dimensions of individualism in capitalism and Islam are different. 2) The biggest difference lies in the orientation, where the capitalist is oriented to the quantity of material (materialistic) and rationality, while Islam is oriented to the balance of the world and the hereafter. 3) Islam is very synonymous with ethics or morals that are oriented to the Qur'an and Hadith, while capitalists adhere to the principles of self-interest and rationality. 4) While the similarities between the two lie in the recognition of individual ownership and enthusiasm in working or doing business.
Narrativas digitales de la COVID-19 en Twitter: de los datos a la interpretación
Authors: Alles Torrent Susanna , Del Rio Riande Gimena , De León Romina , Fila Marisol , Hernández Nidia , Jerry Bonnell  , Song Dieyun
Published: August 2022

El proyecto bilingüe Narrativas digitales de la COVID -19 (DHCovid) reúne a participantes de la Universi- dad de Miami (EE. UU.) y CONICET (Argentina). Tiene como objetivo analizar e interpretar datos (en inglés y español) sobre la pandemia global de SARS-CoV-2 procedentes de Twitter desde finales de abril de 2020 hasta mayo 2021, por medio de métodos y herramientas cuantitativos utilizados en el campo de las Humanidades Digitales. Se presentarán distintos métodos y herramientas empleados, desde plataformas simples de búsqueda y minería semi- automatizada a otras más complejas y humanamente semi-supervisadas. Asimismo, se describirá cómo se ha realizado la recopilación de tweets para estudiar narrativas y temas sobre la pandemia en diversas zonas de habla hispana (Argentina, México, Perú, Colombia, Ecuador, España); donde se haya el repositorio de datos de GitHub y Zenodo así como otras herramientas desarrolladas por el proyecto. Finalmente, se exhibirá lo trabajado con minería de datos, análisis de frecuencia de términos y concordancias, y topic modeling.
Observatorio Fake News: fuentes de información y recursos en la escena de la posverdad
Authors: Tavares de Paula Lorena
Published: August 2022

Este artículo presenta el Observatório Fake News (Observatorio de noticias falsas) y su metodología para el desarrollo de estudios sobre posverdad, noticias falsas (fake news) y fuentes de información auditadas. Desde una perspectiva metodológica, se proponen tres dimensiones para la recolección, análisis e identificación de noticias falsas: la dimensión informativa, la dimensión cultural y la dimensión tecnológica. Así, a partir de la selección y el análisis ordenado de las noticias falsas en categorías tipificadas como salud, política, religión, publicidad, ciencia y tecnología y entretenimiento, fue posible establecer los conceptos de fuente de información auditada y espacios auditados de información, que brindan contribuciones para mitigar los daños causados por las acciones de difusión e interlocución con información falsa en los espacios mediáticos de internet.
Por los caminos de Jack A. Rankin. Recogito o la geovisualización de una experiencia de viaje
Authors: Riesco Tagle Leonor
Published: August 2022

Utilizando como fuente el diario de viaje del norteamericano Jack Rankin, quien recorrió el territorio chileno entre 1855 y 1862, este escrito busca dar cuenta de las posibilidades que permite el programa Recogito de Pelagios Network. Específicamente, la propuesta apunta a reformular el modo tradicional de trabajar los diarios de viajes mediante la conversión del relato al formato gráfico. Esta geovisualización del derrotero, junto con sintetizar casi 400 páginas en una sola imagen, es un acto creativo que da al humanista una perspectiva más concreta de la experiencia geográfica del viajero y, al mismo tiempo, abre las puertas a líneas de investigación novedosas e integrales.
Análisis con Voyant Tools del primer número de la Revista de Humanidades Digitales
Authors: Lessa Bruna
Published: August 2022

Análisis y visualización de los veintitrés textos (incluyendo el editorial) del primer número de la Revista de Humanidades Digitales (RHD) con la herramienta Voyant Tools.
Humanidades Digitales: conceptos y origen
Authors: Vargas da Guia Marx Paulo , Rangel de Lima Thomás Augusto , Medeiros Ana Ligia , Lessa Trézze Luziana Jordão
Published: August 2022

Las Humanidades Digitales (HD) representan un vínculo entre las Ciencias Humanas y la tecnología, además de traer una diversidad de conceptos que no siempre alcanzan un consenso. En esta perspectiva, esta investigación tiene como objetivo analizar los conceptos de Humanidades Digitales y su emergencia evidenciada en la literatura científica. Por tratarse de un campo en constante desarrollo (Guedes, Romeiro y Silva, 2018), se destaca la importancia de promover reflexiones sobre las HD. La recolección de datos se realizó en bases de datos nacionales e internacionales, con el fin de mapear el mayor número de referencias sobre el tema. Las HD ofrecen nuevas aplicaciones, donde lo tradicional en su formato material, con acceso limitado por barreras físicas, se encuentra con lo digital, ampliando el acceso, así como nuevas formas de investigar las colecciones.
Análisis de redes sociales en la Historia de las Ciencias
Authors: Pereira Antunes Anderson
Published: August 2022

Con sus orígenes en la Sociología, el análisis de redes sociales ha ganado popularidad con el desenvolvimiento de las Humanidades Digitales y de software gratuitos de visualización de redes, como Gephi. Para la Historia de las Ciencias, el análisis de redes puede destacar cómo el conocimiento científico es construido socialmente y depende de interacciones entre individuos e instituciones. En este artículo demuestro cómo el análisis y visualización de redes con Gephi puede ser una herramienta valiosa para comprender la sociabilidad de las expediciones científicas del siglo XIX al investigar los viajes de Louis Agassiz y Henry Walter Bates por Brasil.
Digital Publishing with Minimal Computing (UMD-USAL, 2020)
Authors: Calarco Gabriel Alejandro , Gionco Pamela , Méndez Rocío , Merino Recalde David , Striker Gabriela , Suárez-Giraldo Cristian
Published: August 2022

En este trabajo compartiremos nuestra experiencia como estudiantes del curso Digital Publishing with Minimal Computing/Ediciones digitales con minimal computing, que fue impartido en modalidad virtual por Raffaele Viglianti (University of Maryland), Gimena del Rio Riande, Romina De León y Nidia Hernández (Consejo Nacional de Investigaciones Científicas y Técnicas) entre septiembre y diciembre de 2020. Nos interesa desarrollar las oportunidades y dificultades que percibimos al trabajar con el lenguaje de marcado XML y el estándar desarrollado por la Text Encoding Initiative para abordar nuestra primera edición digital de un texto –en particular, la “Descripción de Buenos Aires”, contenida en Relación de un viaje al Río de la Plata, de Acarete du Biscay (siglo XVII), publicado tanto en inglés (1698) como en castellano (1867)–, mediante tecnologías abiertas como GitLab y Jekyll para su publicación en un sitio web. Sin duda, la metodología colaborativa empleada nos anima a emprender otras tareas y proyectos de Humanidades.
Reseña de Lacalle, Juan Manuel y Vilar, Mariano. Una lectura distante de la investigación actual en letras en Argentina. En G. del Rio Riande, G. Calarco, G. Striker y R. de León (Eds.), Humanidades Digitales: Construcciones locales en contextos globales. Actas del I Congreso Internacional de la Asociación Argentina de Humanidades Digitales - AAHD, Buenos Aires, 2016
Authors: Lázaro Nicolás A.
Published: August 2022

Reseña de: Lacalle, Juan Manuel y Vilar, Mariano. Una lectura distante de la investigación actual en letras en Argentina. En G. del Rio Riande, G. Calarco, G. Striker y R. de León (Eds.), Humanidades Digitales: Construcciones locales en contextos globales. Actas del I Congreso Internacional de la Asociación Argentina de Humanidades Digitales - AAHD, Buenos Aires, 2016
‘SPEAKING’ VERBS IN MIDDLE ARMENIAN
Authors: AZIZBEKYAN TATEVIK
Published: August 2022

Identifying specific weight of verbs in the Armenian grammatical system, semantic diversity, communicative value, and communicative abilities, it is imperative to analyze the semantic grouping of verbs and the connective features of lexical groups, which will contribute to the discovery of lexical meaning and syntactic-conjunctive interrelationships. The purpose of this article is to show the boundaries, features, and linguistic potential of the most diversified collection of verbs in the lexicon-proverbial verbs.

The analysis of verbs denoting ‘speaking’ in Middle Armenian brings to the conclusion that these verbs possess a common quality - that of telling information. Based upon this fact one can say that there are two subgroups within these verbs: a) single-stream and b) reciprocal verbs denoting speaking. Within the studied verbs, the stylistically neutral verb ‘say’ which is the most frequently used one due to its polysemy. As a rule, the verbs denoting speaking or other verbs used in the same meaning possess or gain the transitivity with two objects, one of which is presupposed or imposed by the grammatical rank of the verb (direct object) and the second – by the meaning of the verb (indirect object). In other words, the verbs of the studied group take two objects.
STATUS AND PECULIARITIES OF THE DEVELOPMENT OF NON-FORMAL AND INFORMAL EDUCATION IN THE REPUBLIC OF ARMENIA
Authors: Ispiryan MARIAM , VARDANYAN MARIA
Published: August 2022

The article reveals trends in organizing educational process on the principles of formal, non-formal and informal models. Nowadays non-formal and informal education is becoming relevant. Unlike formal education, these forms are free from strict rules and regulations, can satisfy educational needs of citizens to a greater extent, regardless of their age, gender, educational level. They also expand professional competences, realizing the most important human need for impressions, for personal development, which leads to professional growth of a person. The article substantiates the idea that non-formal and informal models of education are available to people of all ages, are important part of socialization of a person, help master new social roles, contribute to spiritual development.

During the study, interest and preferences in various forms of adult education were revealed. The article touches upon the issues of evaluation, recognition and certification (accreditation) of the results of non-formal and informal education in Armenia. The obtained results show that interest in various forms of adult education is growing both from science and from practitioners, especially in the era of information society. Recognized results may be a sufficient condition to enter the labor market, realize a particular job or occupation.
SPOUSES’ COMPATIBILITY AND SOCIO-PSYCHOLOGICAL ADAPTATION IN A YOUNG ARMENIAN FAMILY
Authors: ALEXANYAN MЕRI
Published: August 2022

The article discusses the issue of spouse compatibility and social-psychological adjustment in young Armenian families, which, on the one hand, relies on positive feelings, emotionality, on the other hand, on the agreement of various demands (sexual, material, spiritual), including interests, opinions, views, on the value system established in the family. Aspects of psychological compatibility of couples are also presented. The discussion of the mentioned aspects reveals the supremacy of the compatibility of values ​​and their conformity in Armenian families, which ensures the mutual understanding and coexistence of young spouses. As a result of the conducted research, one of the main areas of joint life in Armenian families was revealed, that is the conformity of the value system of young spouses, which we presented in the form of a hierarchical system. The classification model of socio-psychological adjustment features of spouses in young Armenian families has also been developed. Hence, the analyzes and studies done on the issue determine the novelty of the article.
Image denoising model based on improved fractional calculus mathematical equation
Authors: Li Kai , Wang Xinke
Published: August 2022

Aiming at the problems of image edge blur and detail loss in most image denoising models, an image denoising model based on improved fractional calculus is proposed. Through the classification of image noise, the integer order PDE model is discussed. Based on the mathematical theory of fractional calculus, the fractional PDE model is discussed. The model is improved by combining texture detection operator, gray value detection operator, smoothing factor and fast algorithm. The simulation experiment of the model is carried out based on MATLAB simulation platform. The results show that the improved model is significantly better than other comparison models in image denoising effect, and the operation efficiency is higher.
Allometric models for estimating aboveground biomass of young Norway spruce trees in the Western Carpathians, Slovakia
Authors: Pajtík Jozef , Konôpka Bohdan , Šebeň Vladimír
Published: August 2022

In the period of climate change, it is necessary to have biomass models for trees of all sizes to make precise estimations of biomass forest stocks to quantify carbon sequestration by forest cover. Therefore, we created allometric models of aboveground biomass in young Norway spruce (Picea abies [L.] Karst.) trees including main components, i.e. stem, branches and needles. The models used 200 sampled trees from 10 sites located in the central part of the Western Carpathians in Slovakia. The models, i.e. allometric regression relations implemented stem base diameter (diameter d0) and/or tree height. Moreover, using the derived allometric relations and a constant annual diameter increment of 10 mm, we calculated quasi-annual aboveground biomass production with regard to diameter d0. While stem had the largest contribution to aboveground biomass, followed by needles and branches, a different situation was revealed for the annual aboveground biomass production with the largest share of needles followed by stem and branches. Finally, we implemented the allometric models in a specific forest stand, where repetitive measurements were performed within 14 consecutive years. The results showed for example nearly 650 kg of the aboveground biomass per 102 m2 at the stand age of 10 years. The new biomass models can be applied to estimate the aboveground biomass stock in Norway spruce dominating stands in the Western Carpathians. Since the models are based on both diameter d0 and tree height a user can choose which variable is more suitable for particular conditions.
Long-term soil water content dynamics under different land uses in a small agricultural catchment
Authors: Horel Ágota , Zsigmond Tibor , Molnár Sándor , Zagyva Imre , Bakacsi Zsófia
Published: August 2022

Longer term monitoring of soil water content at a catchment scale is a key to understanding its dynamics, which can assist stakeholders in decision making processes, such as land use change or irrigation programs. Soil water monitoring in agriculturally dominated catchments can help in developing soil water retention measurements, for assessment of land use change, or adaptation of specific land management systems to climate change. The present study was carried out in the Pannonian region (Upper-Balaton, Hungary) on Cambisols and Calcisols between 2015 and 2021. Soil water content (SWC) dynamics were investigated under different land use types (vineyard, grassland, and forest) at three depths (15, 40, and 70 cm). The meteorological data show a continuous decrease in cumulative precipitation over time during the study with an average of 26% decrease observed between 2016 and 2020, while average air temperatures were similar for all the studied years. Corresponding to the lower precipitation amounts, a clear decrease in the average SWC was observed at all the land use sites, with 13.4%, 37.7%, and 29.3% lower average SWC for the grassland, forest, and vineyard sites, respectively, from 2016 to 2020 (measured at the 15 cm depth of the soil). Significant differences in SWC were observed between the annual and seasonal numbers within a given land use (p < 0.05). The lowest average SWC was observed at the grassland (11.7%) and the highest at the vineyard (28.3%). The data showed an increasing average soil temperature, with an average 6.3% higher value in 2020 compared to 2016. The grassland showed the highest (11.3 °C) and the forest soil the lowest (9.7 °C) average soil temperatures during the monitoring period. The grassland had the highest number of days with the SWC below the wilting point, while the forest had the highest number of days with the SWC optimal for the plants.
A new small-scale experimental device for testing backward erosion piping
Authors: Petrula Lubomír , Říha Jaromír
Published: August 2022

Backward erosion piping is driven by seepage forces acting on the soil grains at the downstream end of the seepage path. A new device for the laboratory testing of backward erosion progression was developed and tested. The device consists of a plexiglass prism at which the seepage path has been predefined. The prism was equipped with an inflow consisting of gravel separated from tested sand by a strainer. The hydraulic gradient along the seepage pipe was observed by a set of piezometers and pressure cells, and the seepage discharge was measured volumetrically. The transported sediment was trapped in a vertical cone located downstream from the device. The progression of the seepage path, the piezometric heads and the trapped material was observed by two synchronous cameras. 15 trial tests have been carried out to date, and from these, the interim results are presented.
Reflecting on the Efficiency of Design Thinking and Lean Startup
Authors: Bätz Kerstin , Siegfried Patrick
Published: August 2022

Objective: In this article, the methods used to simplify the business modelling and founding of new companies are presented and critically reflected. Furthermore, it is discussed to what extent a specific method is advantageous, disadvantageous, applicable, not applicable, or even contradictory.

Methodology: The theoretical analysis is underpinned by a qualitative interview study asking company founders about applying the methods mentioned above. The work is based on scientific papers and books and is complemented by the data originating from a specially designed study.

Findings: The results conclude that business model founding instruments provide strategic guidelines favouring entrepreneurs, yet they turn out to be minor in its real-life significance as numerous factors rooted in different fields of expertise play in.

Value Added: The added value of this paper is in the elaboration of efficiency bringing and risk-minimizing components of the methods, respectively. Accordingly, managers and entrepreneurs of all industries are intended to be equipped with sufficient information content that eases the decision for or against one of the methods as realistic expectations considering the application are likely to emerge.

Recommendations: The limitations of this study are rooted in the chosen qualitative research since every interviewee is a subject to their individual perception.
Aspects concerning the physical-mechanical characteristics of low-noise asphalt mixture
Authors: Stirb Adelin , Marc Paul , Forton Andrei
Published: August 2022

As the traffic increases in urban areas, the noise generated by the vehicles has become a major concern during the last decade and many countries have been looking for solutions to reduce the level of disturbance. The lowering of the noise level by choosing the correct type of asphalt mixture may be considered as an alternative to sound-absorbing walls.

The use of these low-noise asphalt mixtures requires a previous verification of the technical conditions and the performance levels they need to meet.

The paper presents the research and laboratory tests aimed at comparing the physical-mechanical characteristics of a maximum 16mm grain size bituminous concrete (BA16) with a low-noise bituminous concrete used in the wearing course of bituminous pavements.

This research started from the fact that the Romanian design standard for asphalt mixtures does not stipulate the physical-mechanical characteristics required by a low-noise asphalt mixture. Thus, in order to clarify this matter, the physical-mechanical characteristics of a 16mm grain size laboratory-made bituminous concrete (BA16) were compared to the characteristics of a low-noise asphalt mixture presented by the specialized literature.

The results obtained following laboratory testing of the asphalt concrete and the research of the specialized literature concerning low-noise asphalt mixtures confirm the differences as far as their physical-mechanical characteristics are concerned (voids, bulk density, dry density, Marshall stability and flow and stiffness modulus).
Influence of the Parallel Beam Load Cell installation on the Strain/Stress Field reading error
Authors: Stefan Mocanu , Radu Panaitescu-Liess , Oana Tonciu , Catalin Francu
Published: August 2022

Parallel beam force transducers are used for the purpose of determining the masses of bodies and are essentially devices that react, both quantitatively and qualitatively, to a specific physical scalar integer (in this case, the mass of the element to be measured). The load being measured is converted into an electrical signal using such a device. The operating principle is based on Hooke’s law, i.e., there is a linear relationship between strains and stresses within proportional limits. The authors of this article make some general observations on possible errors associated with the installation of parallel beam force transducers.
Kinerja Traksi Sepeda Motor Roda Tiga Pada Berbagai Kondisi Jalan dan Muatan
Authors: Atmika I Ketut Adi , Suriadi I Gusti Agung Kade
Published: August 2022

Belakangan ini berkembang kendaraan niaga yang berbasis sepeda motor yang digunakan untuk berdagang atau pengangkutan sampah. Kurangnya akselerasi dan beberapa kali ditemukan kecelakaan kendaraan sepeda motor roda tiga karena tidak mampu mengatasi kondisi jalan belok maupun dipaksakan mengangkut barang yang berlebih, membutuhkan kajian dan analisa performa traksi kendaraan sepeda motor roda tiga. Penelitian dilakukan dengan menguji karakteristik daya torsi engine kendaraan sepeda motor roda tiga pada chassis dynamometer. Karakteristik tersebut menjadi bagian simulasi pada system drive train sepeda motor roda tiga untuk mendapatkan kinerja traksi kendaraan. Hasil penelitian menunjukkan adanya traksi yang tidak terpakai dari perpindahan transmisi pertama sampai kelima. Analisa traksi kendaraan model tanpa muatan mampu mengatasi tanjakan maksimum sebesar 20,590, sedangkan tanjakan maksimum dengan muatan 100 kg mencapai 15,840 dan dengan muatan 150 kg mencapai 14,200. Kendaraan model tanpa muatan mampu melewati berbagai medan jalan sedangkan dengan beban 100 kg hanya mampu melewati jalan aspal basah dan kendaraan model dengan beban 150 kg tidak mampu melewati berbagai kondisi jalan

Recently, there has been a development of commercial vehicles based on motorcycles that are used for trading or transporting garbage. The lack of acceleration and several three-wheeled motorcycle accidents were found because they were unable to cope with turning road conditions or forced to carry excess goods, requiring a study and analysis of the traction performance of three-wheeled motorcycles. The research was conducted by testing the characteristics of the engine torque of a three-wheeled motorcycle on a chassis dynamometer. These characteristics are part of the simulation on the three-wheeled motorcycle drive train system to obtain vehicle traction performance. The results showed that there was unused traction from the first to the fifth transmission shift. Traction analysis of an unloaded model vehicle is able to overcome a maximum incline of 20,590, while the maximum incline with a load of 100 kg reaches 15,840 and with a load of 150 kg it reaches 14,200. The model vehicle without a load is able to pass through various terrains, whereas with a load of 100 kg it is only able to pass through wet asphalt roads and a model vehicle with a load of 150 kg is unable to pass through various road conditions.
Evaluasi Sifat Bending, Tarik dan Morpologi dari Komposit Polyester/Serbuk Serat Hibiscus Tiliaceus setelah diperlakukan dengan NaOH
Authors: Sari Nasmi Herlina , Pandiatmi Pandri , Dyah Sulistyowati Emmy , Sinarep Sinarep , Pandiatmi Pandri , Wirawan I Made , Suteja Suteja , Akhyar Sutaryono Yusuf , Sujita Sujita , Hermansyah Rozan , Rama Setiyadi Muhammad
Published: August 2022

Telah diinvestigasi komposit poliester yang dimodifikasi dengan serbuk dari serat hibiscus tiliceus (HT) sebagai inovasi dari material komposit yang baru. Penelitian ini bertujuan untuk menyelidiki sifat mekanik dari komposit dari serbuk hibiscus tiliaceus (HT) setelah direndam dalam larutan alkali dalam periode berbeda. Sebelum dibuat komposit, serbuk HT direndam dalam alkali NaOH 5% selama waktu berbeda yaitu 2, 4 jam, 6 jam, dan 8 jam. Teknik pembuatan komposit dilakukan dengan teknik hand lay-up; resin poliester sebagai matrik dengan hardener dari metil etil keton peroksida 1% dicampur, kemudian dituang ke dalam cetakan dan diberi tekanan 5 MPa selama 12 jam. Sifat kekuatan tarik, modulus elastisitas dan kekuatan bending telah dievaluasi. Hasil studi menunjukkan bahwa lama perendaman serbuk HT dalam NaOH memberikan efek pada sifat mekanik dari komposit serbuk HT/polyester. Setelah serbuk direndam dalam NaOH selama 2 jam, 4 jam dan 6 jam, kekuatan tarik dan bending dari komposit meningkat yang dikaitkan dengan ikatan interface antara serbuk HT-poliester bertambah kuat, tetapi kekuatannya menurun setelah serbuk direndam selama 8 jam karena serbuk HT rusak dan pullout. Analisa SEM menunjukkan morpologi patahan yang rapat dan padat antara serbuk dan poliester serta adanya serbuk HT pullout.  Ditinjau dari kekuatan tariknya, komposit yang dihasilkan ini dapat menjadi alternatif pengganti komposit serat gelas.

A polyester composite modified with powder from Hibiscus Tiliceus fiber as a new composite material. This study aims to evaluate the mechanical properties of the composite of Hibiscus tiliaceus (HT) powder after being immersed in an alkali solution for different periods. Before making the composite, the HT powder was immersed in 5% NaOH for times; 2, 4, 6, and 8 (hours). The composite manufacturing technique has been carried out using the hand lay-up technique; polyester resin as a matrix with a hardener of 1% methyl ethyl ketone peroxide mixed, then poured into molds and under the pressure of 5 MPa for 12 h. The properties of tensile strength, modulus of elasticity, and bending strength have been evaluated through tensile and bending tests. The results showed that the tensile and bending strengths of the composite increased after the HT powder was soaked from 2 h to 6 h; it is due to an increase in the interfacial bond between the HT powder-polyester, but the composite strength decreased after the powder was soaked for 8 h because the HT powder was damaged and powder pullout occurs. SEM analysis shows a tight and dense interface between the powder and polyester and the presence of HT powder pullout. In terms of tensile strength, the resulting composite can be an alternative to glass fiber composites.
Karakteristik Papan Komposit dengan Menggunakan Kulit Salak Sebagai Filler Komposit
Authors: Hadi Wibowo Cahyo , Sunardi Sunardi , Lusiani Rina
Published: August 2022

Papan partikel atau papan komposit adalah komposit yang terbuat dari partikel kayu atau serat alam yang diikat dengan perekat sitetis atau bahan pengikat lain. Komposit papan partikel dominan diaplikasikan sebagai furniture. Untuk menjaga penurunan bahan baku kayu dalam pembuatan furniture maka dilakukan inovasi berupa campuran bahan alam untuk komposit papan partikel. Tujuan penelitian ini adalah untuk mengetahui pengaruh dari variasi fraksi volume kulit salak dan serbuk kayu masing-masing 20% 45%, 32,5% 32,5% dan 45% 20%, dengan perbandingan tetap pada resin epoxy dan lem PVAc masing-masing 15% dan 20%. Komposit papan partikel ini dibuat melalui perlakuan NaOH 5%, meshing 40 mesh dan proses kompaksi dengan tekanan 30 bar selama 120 menit menggunakan cold press single punch. Karakteristik terbaik pada komposit papan partikel terdapat pada varian 2 dengan komposisi kulit salak 32,5% dan serbuk kayu 32,5% terbukti dari nilai fisik dan mekaniknya yaitu densitas 0,953 g/cm3, pengembangan tebal 7,27%, impak 3,11 kj/m2, gaya maksimal 133,658 N dan batas elastisitas 1,882 GPa.

Particleboard or composite board is a composite made of wood particles or natural fibers bonded with synthetic adhesives or other binding materials. Particleboard composites are dominantly applied as furniture. To maintain the decline in wood raw materials in the manufacture of furniture, innovations were made in the form of a mixture of natural materials for particle board composites. The purpose of this study was to determine the effect of variations in the volume fraction of snakefruit leather and sawdust respectively 20% 45%, 32,5% 32,5% and 45% 20%, with a fixed ratio of epoxy resin and PVAc glue respectively 15 and 20%. This particleboard composite was made through 5% NaOH treatment, 40 mesh meshing and compaction process with a pressure of 30 bar for 120 minutes using a cold press single punch. The best characteristics of particleboard composites are found in variant 2 with a composition of 32,5% snakefruit leather and 32,5 wood powder as evidenced by its physical and mechanical values, namely density 0,953 g/cm3, thickness expansion 7,27%, impact 3,11 kj/m2, the maximum force is 133,658 N and the elastic limit is 1,882 GPa.
Optimasi Pengaruh Parameter Terhadap Sifat Mekanis pada Sambungan Similar Baja Tahan Karat AISI 304
Authors: Tina I Putu Agus , Budiarsa I Nyoman , Santhiarsa I G usti Ngurah Nitya
Published: August 2022

Kekuatan sambungan dan sifat las titik dipengaruhi oleh beberapa faktor seperti ketebalan pelat, ukuran strip, waktu pengelasan, tegangan dan beban yang diberikan selama proses las. Sambungan dalam hal ketebalan dan ukuran diameter kerucut dalam pembuatan nugget sangat penting saat menghubungkan panel saat merakitbodi sebagai bagian yang menentukan kelayakan dan keselamatan transportasi. Periksa sambungannya. Secara umum, banyak penelitian telah dilakukan pada pengelasan titik tentukan parameter yang dapat mempengaruhi hasil las. Pengujian tarikdan teknik pengelasan titik uji digunakan untuk menentukan kekuatan sambunganlembaran baja tahan karat. Optimasi Pengaruh Parameter Terhadap Sifat Mekanis Pada Sambungan Similar Baja Tahan Karat AISI 304. dimana pada spesimen 1.26V 4mm tegangan maksimum 119 MPa, spesimen 1.26V 5mm tegangan maksimum 76 MPa, spesimen 1.26V 6mm tegangan maksimum 131 MPa, spesimen 1.37V 4mm tegangan maksimum 215 MPa, spesimen 1.37V 5mm tegangan maksimum 122 MPa, spesimen 1.37V 6mm tegangan maksimum 71 MPa, spesimen 1.48V 4mm tegangan maksimum 104 MPa, spesimen 1.48V 5mm tegangan maksimum 76 MPa, spesimen 1.48V 6mm tegangan maksimum 49 MPa. Jadi dari hasil ke 9 pengujian dengan menggunakan voltase dan taper berbeda nilai tegangan maksimum yang tertinggi yaitu pada spesimen (137V,4mm) Hal ini karena sampel ujisampai benar-benar mengalami ekstraksi atau perpindahan yang maksimal dibandingkan sampel lainnya.

The strength of the joint and the properties of the spot weld are affected by several factors such as plate thickness, strip size, welding time, stresses and loads applied during the welding process. The connection in terms of thickness and size of the cone diameter in the manufacture of nuggets is very important when connecting panels when assembling the body as a part that determines the feasibility and safety of transportation. Check the connection. In general, a lot of research has been carried out on point welding to determine the parameters that can affect the welding results. Tensile testing and test point welding techniques are used to determine the joint strength of stainless steel sheets. Optimizing the Effect of Parameters on Mechanical Properties at Similar Connections of AISI 304 Stainless Steel. Where in the specimen 1.26V 4mm maximum stress is 119 MPa, specimen 1.26V 5mm maximum stress is 76 MPa, specimen 1.26V 6mm maximum stress is 131 MPa, specimen 1.37V 4mm maximum stress 215 MPa, specimen 1.37V 5mm maximum voltage 122 MPa, specimen 1.37V 6mm maximum voltage 71 MPa, specimen 1.48V 4mm maximum voltage 104 MPa, specimen 1.48V 5mm maximum voltage 76 MPa, specimen 1.48V 6mm maximum voltage 49 MPa. So from the results of the 9 tests using different voltages and tapers, the highest maximum voltage value is in the specimen (137V,4mm). This is because the test sample actually experiences maximum extraction or displacement compared to other samples.
PENENTUAN PRIORITAS PENANGANAN RUAS JALAN KABUPATEN DI KABUPATEN KLUNGKUNG DENGAN METODE ANALYTICAL HIERARCHY PROCESS (AHP)
Authors: Juniarta I Wayan , Priyantha Wedagama Dewa Made , Ariawan I Made Agus
Published: August 2022

Budget limitations are a problem in road handling programming. The purpose of this study is to determine the hierarchical arrangement and quantitative measurements of each sub-criteria so that a mathematical formula is formed to develop a priority scale for handling district roads with the study location in Klungkung Regency. The decision making method used is Analytical Hierarchy Process (AHP). The hierarchical arrangement of the research results consisting of Level-1 is the objective, namely determining the priority scale for handling district roads in Klungkung Regency. Level-2 is a criterion, and Level-3 is a sub-criteria that affects the criteria. The criteria used are i). Network system (A) with sub-criteria for road conditions (A1), pavement width (A2) and disaster-prone areas (A3), ii). Land Use System (B) with sub-criteria for access to government offices (B1), to areas of tourist attraction (B2), to strategic transportation areas (B3), and to areas of holy places and cultural heritage (B4), iii). Movement System Criteria (C) with sub-criteria LHR (C1), and iv). Institutional System Criteria (D) with subcriteria included in the proposal in the Musrenbang (D1), according to the direction of RENSTRA (D2), and equal distribution of road stability (D3). The weights of each sub-criteria A1, A2, A3, B1, B2, B3, B4, C1, D1, D2, and D3 are 15.23%, 7.80%, 5.80%, 3.25%, respectively. 9.50%, 8.10%, 3.24%, 19.9%, 6.32%, 7.63%, and 13.24%. The mathematical formula based on the weight of the quantitative measurements, namely Y = 15.23A1 + 7.80A2 + 5.80A3 + 3.25B1 + 9.50B2 + 8.10B3 + 3,24B4 + 19.9C1 + 6,32D1 + 7,63D2 + 13 , 24D3. Obtained a priority scale arrangement of road handling, namely 62 very high priority scale roads, 58 high priority scale roads, 60 medium priority scale roads, 59 low priority scale roads, and 60 very low priority scale roads.
AS DUAS FACES DO TRABALHO
Authors: Nobre Lopes Fátima Maria
Published: August 2022

A partir de uma visão marxiana, este artigo objetiva apresentar a dupla face do trabalho no capitalismo nas suas funções sociais de criador de valor de uso e criador de valor de troca. Como referência teórica, parte das concepções de Marx na sua obra O capital e toma o pensamento de Lukács na sua obra Ontologia do ser social. Com base central nas teses desses filósofos, o texto enuncia os dois lados do trabalho: a sua dimensão constitutiva do homem, que diz respeito ao trabalho em geral, e a sua dimensão negativa relacionada ao trabalho alienado, estranhado, que se manifesta no modo de produção capitalista sob a forma de fetichismo da mercadoria. Importante frisar que essas são as duas faces de um mesmo trabalho no capitalismo, cuja dimensão negativa, predominante, precisa ser superada.
MOVIMENTOS DE ENSINO E APRENDIZAGEM DURANTE A PANDEMIA DE COVID-19 E SEUS IMPACTOS NA FORMAÇÃO DE PEDAGOGAS
Authors: De Souza Simone , Raimundo Yaegashi Solange Franci , Marques de Mendonça Glatz Emanoela Thereza
Published: August 2022

O estudo teve como objetivo investigar e contrapor as significações atribuídas às modalidades de ensino presencial e remota vivenciadas por vinte e duas acadêmicas do curso de Pedagogia, vinculadas ao Plano Nacional de Formação de Professores da Educação Básica (PARFOR), da Universidade Estadual de Maringá (UEM). Para a coleta de dados, foram utilizados dois questionários: um para os dados sociodemográficos e outro referente às modalidades de ensino presencial, a distância (EaD) e Ensino Remoto Emergencial (ERE), os quais foram preenchidos via Google Forms. Verificou-se que as marcas do modelo presencial ainda são fortes e estão associadas às possibilidades de interação face a face entre professores e colegas, o que conduz a comparações com a EaD e o ERE, sinalizando a inevitável incursão das tecnologias digitais para fins educacionais. Chegou-se à conclusão de que a pandemia trouxe à tona inúmeros aspectos que desvelam desigualdades sociais, tais como a falta de acesso à internet de qualidade e equipamentos compartilhados entre membros de uma mesma família. Revelou-se, ademais, a necessidade de organização do ambiente de estudos e do gerenciamento do tempo, em um contexto de equilibração de funções profissionais, estudantis e familiares.
NOVOS PROBLEMAS E VELHAS FRAGILIDADES:
Authors: Colombani Fabiola
Published: August 2022

Com a extrema necessidade de isolamento social pela pandemia de covid-19, o ensino superior precisou reformular as aulas presenciais. A educação passou por diversas adaptações e, como consequência, os professores tiveram que adotar como medida emergencial novos métodos tecnológicos para o formato remoto. Assim, este artigo tem como objetivo apontar e discutir algumas experiências que nasceram de estratégias planejadas com o intuito de abrandar o impacto negativo causado pelo cenário pandêmico. Para tanto, foram utilizados como objeto de análise alguns relatos detalhados acerca das práticas de ensino e aprendizagem vivenciadas ao longo dos meses e que retratam as sensações e sentimentos dos docentes diante de algo até então inusitado. Cabe dizer que este trabalho aponta os desafios vividos por professores nativos do ensino presencial, com pouco ou nenhum conhecimento em educação a distância, e que desenvolveram as ações educacionais estabelecidas por diferentes instituições.
ROMPER COM A COLONIALIDADE E EDUCAR PARA A LIBERDADE:
Authors: Hilário Rosângela Aparecida , De Souza Rodrigues Melba , De Souza Santos Vinícius
Published: August 2022

Este artigo apresenta resultados de uma ação desenvolvida em 2020, para contribuir na criação de estratégias para implantação de rotinas pedagógicas em uma escola de ensino fundamental I, na periferia de Porto Velho (RO), nos meses iniciais da pandemia do coronavírus. O estudo foi estruturado a partir de conceitos do feminismo negro (interseccionalidade e decolonialidade) de Audre Lorde (2019a, 2019b), bell hooks (2017), Conceição Evaristo (2014) e Lélia Gonzales (2020), articulando-se às narrativas de professoras na formação continuada com foco no enfrentamento ao novo “anormal”. Como resultado, verificou-se um apartheid epistemológico e social por meio da divisão racial do trabalho no espaço escolar e dos processos que tendem a ampliar as diferenças entre as infâncias nas práticas pedagógicas dos anos iniciais.
A ATIVIDADE DOCENTE E A PROMOÇÃO DA INCLUSÃO NA EDUCAÇÃO SUPERIOR:
Authors: Lins de Moura Phelipe , De Lourdes Frederico Fumes Neiza
Published: August 2022

Com o crescente número de acesso de pessoas com deficiência à Educação Superior, amplia-se a preocupação com o processo de inclusão. Deste modo, é preciso debater, além do acesso, as condições para a permanência desse alunado. Deve-se, igualmente, buscar compreender como tem se dado o processo formativo desses estudantes. Considerando essas demandas, esta pesquisa teve como objetivo apreender as significações constituídas do processo de inclusão de um estudante com deficiência visual no curso de licenciatura em Educação Física. A abordagem metodológica adotada é de cunho qualitativo, a partir de um estudo de caso. A construção dos dados empíricos deu-se por meio do uso da entrevista semiestruturada, que foi transcrita e posteriormente analisada através dos núcleos de significações. Os resultados do estudo mostraram que a inclusão tem acontecido na Educação Superior, mas ainda há muitos obstáculos a serem superados. Em virtude disso, o processo de formação do aluno com deficiência visual é tensionado por múltiplas barreira.
A CONTRIBUIÇÃO DA GESTÃO DEMOCRÁTICA PARA O DESENVOLVIMENTO DA FUNÇÃO SOCIAL EMANCIPADORA DA ESCOLA
Authors: Nakala da Silva Câmara Oliveira Zaíra , Campos Alves Sandra Maria , Ferreira Maia Sonia Cristina
Published: August 2022

A escola é um ambiente representativo da educação formal e tem como função inata o ensino e a aprendizagem. Sua função social a faz ser, também, um espaço de vivências sociais, históricas e culturais propício à formação completa de um sujeito. No entanto, a estrutura organizacional neoliberal, bem como os dispositivos legais que regem a educação, reforçam o dualismo da educação brasileira, que dispõe de um sistema voltado para a formação intelectual destinado às elites dominantes e de uma educação direcionada para a formação de massa dos trabalhadores. A gestão democrática é uma ferramenta que auxilia no desenvolvimento da função social da escola. Discussões acerca desse tema precisam ser deflagradas nas instituições de ensino, junto à comunidade escolar, a fim de que esta se sinta parte ativa do processo educacional, sendo assim ponto de partida para a emancipação do sujeito.
A RELAÇÃO AFETIVA NA PRÁTICA EDUCATIVA:
Authors: Lopes Ribeiro Marinalva , Ferreira de Oliveira Delma
Published: August 2022

Neste artigo, apresentam-se resultados de uma pesquisa de delineamento qualitativo, cujo objetivo foi discutir a relação afetiva instituída na prática educativa de docentes universitários do colegiado de licenciatura em matemática de uma universidade pública da Bahia mediante suas representações. A investigação fundamentou-se teoricamente em autores como Day (2011), Freire (2011), Moscovici (2005) e Postic (2008). Neste estudo, usou-se como dispositivo para a produção de dados entrevistas semiestruturadas com três docentes do referido colegiado. Para a análise dos dados, inspirou-se na Técnica de Análise de Conteúdo (BARDIN, 2001), a partir da qual organizamos categorias interpretativas. Neste artigo discutimos as narrativas relacionadas à afetividade presentes nas práticas educativas desses sujeitos. Os resultados apontam que os docentes entrevistados realçam, em suas representações, uma relação marcada pela proximidade com os discentes, pelo acompanhamento dos estudantes ao longo do percurso estudantil, apoiando-os nas suas dificuldades. Tais indicadores evidenciam que são professores amorosos, comprometidos e responsáveis profissionalmente, contribuindo, de modo efetivo, para a aprendizagem e a conclusão dos estudos desses educandos.
AS INSTITUIÇÕES DE ENSINO SUPERIOR:
Authors: De Moraes Maia Vigano Samira , Lage Fernandes Lafin Maria Hermínia
Published: August 2022

Trata-se de um artigo teórico-crítico, que discorre bibliograficamente acerca das questões de gênero e sexualidade por meio de um levantamento realizado em sites das Instituições de Ensino Superior (IES) no Brasil. Considera-se importante para a temática indicar como as Instituições de Ensino Superior organizam-se para combater a desigualdade, demonstrando como constroem e articulam ações referentes às questões de gênero e sexualidade relacionadas às pessoas transgêneras. Apresentam-se três quadros com os núcleos de pesquisas em gênero e sexualidade de algumas instituições de educação superior brasileiras, analisam-se os quadros por meio de categorias, buscando articular essas questões com a área de educação. Em relação à temporalidade, o levantamento identifica os primeiros núcleos de pesquisa constituídos e formalizados na década de 1980. Para compor a discussão, apoia-se nas perspectivas teóricas de Lanz (2015), Louro (1997, 2000) e Scott (1995). Organiza-se o artigo tendo em vista a problematização sobre as desigualdades em relação às pessoas transgêneras, retratando as ações que as Instituições de Ensino Superior (IES) realizam para reduzi-las. Conclui-se que as instituições buscam agir nessas questões, e que há, com o passar dos anos, um crescimento e fortalecimento do debate nesses espaços.