bluuebunny/crossref_metadata_2025_split huggingface dataset:
Análise dos documentos norteadores do ensino de ciências sobre radiações eletromagnéticas
Authors: Pires Edileuza Santos , Soares Maria Rosangela 
Published: January 2023

Este artigo apresenta o estado da arte sobre como o tema radiações é abordado no Ensino Fundamental II (EF II), objetivando verificar como os documentos norteadores da educação básica (LDB, PCN e BNCC) abordam o assunto das radiações eletromagnéticas no ensino de ciências (EC) nessa etapa educacional, conforme sugeriu a Agência Internacional de Energia Atômica, na conferência Bonn Call-for-Action. O desenvolvimento do artigo seguiu as etapas de metodologia sistemática: revisar sistematicamente, identificar, selecionar e avaliar criticamente estudos primários relacionados à temática da pesquisa (ROEVER, 2017). Os dados obtidos revelaram que houve avanços significativos relacionados ao tema das radiações, quando analisado o que orientavam os PCN e o que hoje orienta a BNCC. Verificou-se que o tema foi inserido na BNCC, porém de forma velada, e não há uma interligação entre as unidades temáticas e os objetos de conhecimento. Conclui-se que os documentos norteadores do EF II, no que diz respeito às radiações eletromagnéticas, não contempla ações que visam estimular alunos/as a obter conhecimentos básicos sobre radiação.
Déterminants de la Productivité du Riz dans un Système de Production Utilisant l'Approche Smart Valley au Centre Bénin
Authors: Firmin Akpo Ibidon , Filikibirou Tassou Zakari , Francis Agani Oninkitan , Jacob Yabi Afouda 
Published: January 2023

L’insuffisance des connaissances sur la technique d’utilisation des nouvelles technologies et de financement limitent la productivité agricole au Centre Bénin. Cet article a analysé les déterminants de la productivité du riz dans un système de production utilisant l'approche Smart Valley comme une nouvelle technologie dans la Commune de Ouessè. Les données ont été collectées sur un échantillon de 100 ménages riziculteurs, choisi de façon aléatoire simple sur la liste des bénéficiaires de l’approche Smart Valley. Ainsi, la statistique descriptive et le modèle de régression log-log ont servi d’outils d’analyses à l’aide du Logiciel SPSS version 21. Les résultats de la méthode de régression linéaire double logarithmique montrent que la productivité agricole est influencée positivement par la quantité d’engrais (urée) utilisée et la quantité d’herbicide total, le nombre de têtes de bovins, l’état de la fertilité des terres exploitées, l’expérience du producteur dans la production du riz, le nombre d’actif agricole dans le ménage et l’accès au financement agricole. Par contre, l’utilisation d’herbicides sélectifs et le manque de variétés à haut rendement ont une influence négative et significative sur la productivité agricole. Ainsi cette étude suggère une amélioration de la politique des appuis techniques, financiers et l’accès aux intrants de qualité afin de contribuer efficacement à l’amélioration de la productivité agricole au centre du Bénin

The lack of knowledge on the technique of using new technologies and financing limits agricultural productivity in Central Benin. This article analyzed the determinants of rice productivity in a production system using the Smart Valley approach as a new technology in the Commune of Ouessè. The data was collected on a sample of 100 rice-growing households, chosen in a simple random way from the list of beneficiaries of the Smart Valley approach. Thus, the descriptive statistics and the log-log regression model were used as analysis tools using SPSS software version 21. The results of the double logarithmic linear regression method show that agricultural productivity is positively influenced by the amount of fertilizer (urea) used and the amount of total herbicide, the number of head of cattle, the state of the fertility of the land used, the producer's experience in rice production, the number of active agriculture in the household and access to agricultural finance. On the other hand, the use of selective herbicides and the lack of high-yielding varieties have a negative and significant influence on agricultural productivity. Thus, this study suggests an improvement in the policy of technical and financial support and access to quality inputs in order to contribute effectively to the improvement of agricultural productivity in central Benin.
Turnover Intention Ditinjau dari Work Family Enrichment pada Karyawan Tango Musik di Medan
Authors: Tanzil Grazia , Hartini Sri 
Published: January 2023

This study aims to determine the relationship between work family enrichment with turnover intention. The hypothesis of this study states that there is a negative relationship between work family enrichment and turnover intention, assuming that the higher the work family enrichment, the lower the turnover intention and conversely the lower the work family enrichment, the higher the turnover intention. The subjects of this study were 105 officer of Tango Musik Medan. Data were obtained from a scale to measure the work family enrichment and turnover intention. Calculations were performed to test the requirements analysis (assumption) that consisted of a test for normality and linearity. The data were analyzed by Product Moment Correlation with SPSS 17 for Windows. The results of data analysis showed that the correlation coefficient was -.622 with a significance value of 0.000 (p <0.05). It showed that there is a negative relationship between work family enrichment and turnover intention. The results of this study indicate that the contributions made by the variable of work family enrichment on turnover intention was 38 percent, while the remaining 62 percent was influenced by other factors not examined. From these results it is concluded that the hypothesis stating that there is a negative relationship between the work family enrichment and turnover intention is acceptable.
Utilization of Sentinel-2 Imagery in Mapping the Distribution and Estimation of Mangroves' Carbon Stocks in Bengkulu City
Authors: Sugara Ayub , Lukman Agung H. , Rudiastuti Aninda W. , Anggoro Ari , Hidayat Muhammad F. , Nugroho Feri , Muslih Ali M. , Suci An Nisa N. , Zulhendri Rifi , Rahmania Marissa 
Published: January 2023

The mangroves' aboveground biomass significantly contributes to the global carbon cycle or economic and ecological values. This makes knowledge about the spatial extent of the mangroves indispensable for policymakers. The sequence of mangroves’ condition range also requires remote sensing data to update the geographical information and synthesize carbon stock in Bengkulu. Therefore, this study aims to create a spatial distrribution of mangroves and evaluate their carbon stock in Bengkulu City using Sentinel-2 imagery. The semi-empirical method uses Sentinel-2 imagery through NDVI to appraise and picture the mangroves' aboveground carbon stock. An allometric equation was used to compute the mangroves' aboveground carbon stock from field measurements. Non-linear regression was used to establish a connection between the NDVI calculated from the Sentinel-2 imagery and the mangroves' aboveground biomass measured in the field, which was subsequently used for aboveground carbon estimation. The results showed that mangroves mapping could derive overall accuracy of 89.09%, where the high-density class existed in 135.12 Ha of total area. It was also discovered that Sentinel-2 imagery could estimate mangroves carbon stock up to 61%. The carbon stock estimation based on the imagery has a value of 16.3992 – 115.134 t C/ha, while that of field survey data ranges from 19.69 to 326.06 t C/ha. These results showed that Sentinel-2B spectral data is functional and has a good chance of being able to predict carbon stock.

Keywords : Carbon; mangroves; NDVI; remote sensing; sentinel-2B

Copyright (c) 2022 Geosfera Indonesia and Department of Geography Education, University of Jember
This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
The Compatibility of Area Functions Map with Actual Site Conditions in Konawe Selatan District
Authors: Nursalam La Ode , Sugiarto Agus , Anasi Putri Tipa , Karim Ahmad Tarmizi Abd , Ikhsan Fahrudi Ahwan , Sejati Andri Estining 
Published: January 2023

The Konawe Selatan District region is characterized by Karst hills, various soil types, and steep slopes. Functional classification considers the physical and non-physical characteristics of the location to determine its many uses. The map developed by the Regulation of the Agriculture Minister of Indonesia should be checked with the actual condition for the validation process before presenting to the society and Local government. Therefore, this research aimed to determine the compatibility of the area function map result with the actual conditions in Konawe Selatan District, Southeast Sulawesi, Indonesia. The research is a regional survey, collecting data from interviews and observations, and the data were analyzed descriptively and quantitatively with percentages. The results show that the compatibility of the Konawe Selatan District area function map is 89.61%, functioning as a guideline in the land use plan. Furthermore, the map could guide potential land-use planning functions such as protected forests, limited production forests, rice fields, and settlements. In conclusion, the map is appropriate for disseminating information and material for land use policies in Konawe Selatan District to stakeholders.
Keywords : actual condition; area function; compatibility; map

Copyright (c) 2022 Geosfera Indonesia and Department of Geography Education, University of Jember
This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Adentrando uma moradia estudantil feminina
Authors: Rodrigues Ermita de Souza Santos , Ramos Bruna Sola da Silva 
Published: January 2023

A permanência de estudantes oriundos de camadas populares em universidades públicas é uma temática de discussão emergente e em constante reivindicação ao longo da história do Brasil. As moradias estudantis, espaços destinados para a habitação de estudantes beneficiados por assistência estudantil nas universidades, constam dentre as ações de políticas públicas de permanência do estudante pobre no ensino superior. No entanto, a identificação do perfil e a escuta ativa das vozes dos estudantes-habitantes destas moradias estudantis parece ser ainda uma extensa lacuna nas pesquisas em Ciências Humanas. Neste sentido, o presente artigo se constitui como fruto de uma investigação que objetivou construir uma compreensão acerca dos modos de vida de estudantes em uma moradia estudantil de uma universidade do interior de Minas Gerais. Por meio de uma pesquisa participante, imergimos no cotidiano de uma moradia feminina e debruçamo-nos na vivência de quatro estudantes-moradoras que nos relataram seu cotidiano, tendo em vista um olhar crítico para a realidade de sujeitos advindos de camadas populares em suas trajetórias universitárias. Com fundamento no referencial teórico freireano, enfocamos, no presente artigo, as temáticas desveladas no processo de observação participante e de entrevistas realizadas com as moradoras: o racismo, o machismo e a fome. Em meio à busca pela resistência no espaço universitário, as estudantes denunciam a a desumanização a que são submetidas em seu cotidiano e expõem a exigência ético-política radical de nossas universidades na garantia de proteção a discentes vulneráveis que buscam, no ensino superior, oportunidades de mudança em suas realidades opressivas.
IMPLEMENTASI METODE MULTISENSORI UNTUK MENINGKATKAN BACA TULIS ALQURAN PADA ANAK DISLEKSIA dan AUTIS di SEKOLAH KHUSUS TARUNA ALQURAN YOGYAKARTA
Authors: Hafni Nur , Lutfiana Fika , Safitri Edy 
Published: January 2023

Pendidikan adalah hak bagi setiap warga negara Indonesia. Tanpa membedakan asal usul, status ekonomi, bahkan kondisi fisik. Disleksia adalah sebuah kondisi seorang anak mengalami kesulitan dalam membaca, menulis dan mengeja. Autis adalah gangguan yang ditunjukkan dengan penguasaan tertunda seperti ecolalia (kemampuan berbicara), mustism (kecemasan sosial), pembalikan kalimat, serta adanya aktivitas bermain yang repetitive dan stereopik, rute ingatan yang kuat, dan keinginan obsesif untuk mempertahankan keteraturan di sekitarnya. Dikutip dari kemendikbud.go.id pada tahun 2015, dari 1,6 juta anak-anak berkebutuhan khusus, hanya 164.000 anak-anak berkebutuhan khusus yang mendapatkan layanan pendidikan yang sesuai dengan kebutuhan mereka. Berdasarkan data ini, dapat disimpulkan bahwa anak-anak berkebutuhan khusus yang mendapatkan layanan pendidikan yang sesuai kebutuhan mereka hanya 10-11 persen dari seluruh anak-anak berkebutuhan khusus di Indonesia.Riyani T. Bondan, Ketua Asosiasi Disleksia Indonesia, mengungkapkan, di dunia, 10 hingga 15 persen anak sekolah menyandang disleksia. Dengan jumlah anak sekolah di Indonesia sekitar 50 juta, diperkirakan lima juta di antaranya mengalami disleksia. ujarnya. Berdasarkan data dari BPS tahun 2017 mengungkapkan bahwa pelatihan mengenai prevalensi autisme di Indonesia sampai saat ini belum pernah dilakukan. Pemerintah pernah merilis data perkiraan penyandang autisme di Indonesia dengan menggunakan prevalensi autisme di Hongkong tahun 2008, yakni 1,8 dari 1000 anak. Dengan menggunakan prevalensi tersebut, maka tahun ini ada sekitar 139 ribu penyandang autis berusia 17 tahun ke bawah. Metode yang digunakan dalam penelitian ini adalah classroomactionresearch atau PTK (Penelitian Tindakan Kelas). Hasil penelitian yang di dapatkan adalah penerapan metode multisensori untuk meningkatkan kemampuan baca tulis alquran pada anak disleksia dan autis. Proses pembelajaran dengan metode ini dapat melibatkan dan mengaktifkan seluruh sensori pada anak, berupa penglihatan, pendengaran, perabaan, dan pergerakan yang terjadi di sekitar anak tersebut. Kegiatan-kegiatan yang berlangsung dalam metode belajar ini membutuhkan konsentrasi melihat (Visual), mendengan (Audio), menulis di atas kertas (Kinestetik), dan menelusuri atau meraba (Tactil).
ANALYSIS OF THE HEAT EXCHANGE PROCESS IN A TUBULAR FILM ABSORBOR DURING SULPHATION OF MIXTURES OF ORGANIC SUBSTANCES
Authors: Dzevochko O. , Podustov M. , Dzevochko A. 
Published: January 2023

The article states that the production of surfactants consists of the following stages: catalytic oxidation of sulfur dioxide, sulfation, neutralization and purification of gaseous emissions. The sulfation step is the main stage at which high-quality intermediates can be obtained.
It has been shown that tubular film absorbers are used for the sulfation process, which create mild conditions for the exothermic reaction due to efficient heat dissipation. This makes it possible to obtain high-quality surfactants both in terms of the degree of sulfation, and in terms of light products.
It is stated that a tubular film absorber with a descending phase flow is a vertical structure with two flows: a liquid phase film and a gas-air flow, ie. a two-phase system.
The presence of two phases changes not only the forms of motion of such systems, but also their nature, as the interaction between the phases has a decisive influence. In contrast to single-phase flows, new forces are manifested at the interface of two-phase flows - forces of interphase surface tension, which affect both the process of mass transfer and the process of heat transfer.
It is shown that in periodicals there is little data on the impact on the process of heat transfer temperatures and consumption of starting reagents.
Such studies will make it possible to create a more modern design of industrial tubular film absorber.
The data of the analysis on the choice of temperatures and costs of the used reagents are given. A deeper analysis of heat transfer processes was performed by the method of mathematical modeling.
A simplified mathematical model is presented, which allows to analyze the heat transfer process along the length of the absorber. A program for calculating the process of sulfation of a mixture of organic substances in a tubular film absorber using the application package MathLab.
The results of mathematical modeling for three velocities of gas flow: 16 m/s, 20 m/s, 24 m/s, which were recommended in the analysis of the costs of starting reagents.
It is shown that the main amount of reaction heat is transferred to the cooling water along the entire length of the absorber.
Development and computer implementation of the motion model and control algorithms of a hybrid multicopter
Authors: Uspenskyi Valerii , Harder Serhii 
Published: January 2023

Among modern unmanned aerial vehicles, a special place is occupied by hybrid multicopters, in which internalcombustion engines are used along with electric motors to create lift. They can carry a larger load for a longertime. But the combination of a more powerful engine with less powerful ones, the variability of the inertialcharacteristics during the flight, significantly complicate the dynamics of such an object and its control. Therefore,there is almost no practical experience in operating such devices, which is the motivation for research anddevelopment in this area. The article deals with a helicopter-type multicopter with five electric motors (4+1 on thetail) and a central internal combustion engine. A mathematical description of the dynamics and kinematics of the
apparatus has been created for the purpose of computer simulation of a controlled flight. The description takes intoaccount all internal dynamic factors and is given simultaneously with respect to the inertial and associatedcoordinate systems, which simplifies the solution of the flight control problem as much as possible. For the latter, amultiloop motion control scheme with the help of motors has been developed. The algorithms are based on thedecomposition of the problem under the conditions of typical motion modes and the modal control method, whichprovides the desired quality of transient processes. A universal automaton for the interaction of control algorithmsfor each engine is described. A typical flight program is simulated, containing climb, course change, following tothe set hovering point and landing under it. The presented results showed the performance of the algorithms anddetermined the directions for further research. The results in the form of a mathematical model, recommendationsfor task decomposition and specific algorithms can be used in the process of designing a hybrid multicopter controlsystem.
Pembelajaran di Sekolah Dasar Kecamatan Sumberlawang Melalui Penerapan Teori Kontruktivisme
Authors: Fath Ayatullah Muhammadin Al 
Published: January 2023

Penelitian ini mempunyai tujuan untuk melihat penerapan proses KBM dengan menggunakan teori kontruktivisme pada waktu pembelajaran. Metode yang digunakan menggunakan kualitatif diskriptif pada guru Sekolah Dasar di wilayah Sumberlawang, Sragen. Data didapatkan dari hasil survei yang diberikan secara online melalui pesan WhatsApp. Hasil penelitian menunjukkan penerapan teori kontruktivisme pada pembelajaran tatap muka dilakukan sebanyak lima basis, yaitu penerapan pembelajaran berbasis masalah, penerapan pembelajaran berbasis proyek, penggunaan bahan ajar dan media berbasis digital. Guru melaksanakan pembelajaran tatap muka terbatas dengan menerapkan teori konstruktivis secara masif dan bertahap, mulai dari perencanaan, proses kegiatan pembelajaran, dan evaluasi pembelajaran. Selain menggunakan media dan model pembelajaran lima basis pada penelitian ini juga menggunakan teori kontruktivisme. Pada pembelajaran tatap muka terbatas bertujuan untuk membantu siswa menjadi lebih aktif dan guru sebagai moderator menjadi lebih inovatif. Proses pembelajaran yang dilakukan di tingkat Sekolah Dasar hanya maksimal 70%. Pelaksanaan pembelajaran yang berpusat pada siswa menunjukkan hasil 45% sangat baik, 50% bagus, 2,5% bagus, 2,5% tidak baik. Hasil menunjukkan faktor penghambat implementasi yang berpusat pada siswa adalah terbatasnya durasi waktu yang relatif singkat.
An Experimental and Theoretical Approach for Stiffness of Machine Tool Spindle with Fluid Bearings
Authors: Xu Ge , Huang Xun , Jiang Shuyun 
Published: January 2023

Abstract
Machine tool spindle stiffness is a leading technical indicatoraffecting cutting ability. However, the stiffness of the machine tool spindle with fluid bearings has not been studied thoroughly. This paper proposes a new methodology for the spindle stiffness with fluid bearing including definition of the spindle nose stiffness, experimental method and calculation method for this stiffness. A motorized spindle with hydrodynamic water-lubricated spiral groove bearings developed in our laboratory is selected as an object, a theoretical and experimental investigation on the spindle nose stiffness is conducted. The result shows that the proposed experimental method can be utilized to measure the nose stiffness of spindle with the fluid bearings, meanwhile, the spindle stiffness can be obtained by simultaneously solving the rotor dynamic model and the fluid bearing dynamic model. The fluid bearing spindle stiffness depends strongly on the rotary speed and the external load. We expect an improvement for the experimental device by introducing another load device to apply a perturbation load with an any angle to the external load on the spindle nose.
Design and mechanism analysis of decanoic acid-palmitic acid/SiO2@TiO2 phase change microcapsules based on RBF model
Authors: Zhang Hao , Gao Tianci , Zong Zhifang , Gui Yilin 
Published: January 2023

Abstract
The decanoic acid-palmitic acid/SiO2@TiO2 phase change microcapsule (D-P-SiO2@TiO2 PCM) not only has the temperature regulation function, also it can degrade pollutants though photocatalysis and control humidity. In order to optimize the photocatalytic-humidity performance of the D-P-SiO2@TiO2 PCM, the uniform test was designed and RBF model was used to optimize the preparation parameters. The degradation rate of gaseous formaldehyde by the optimized D-P-SiO2@TiO2 PCM was 69.57% after 6 h and the moisture content was 0.0923–0.0940 g·g− 1 at 43.16–75.29% RH. The comparison result between model optimization and the experiment sample that prepared by using the optimized parameters showed that the theoretical photocatalytic-humidity performance target value was 2.0502, and the tested target value was 2.0757. The error of the two was only 1.24%, and both were bigger than the best value of uniform experimental. Micro-structure analysis of the optimized D-P-SiO2@TiO2 PCM showed that it had uniform spherical structure, the particle size was about 200 nm, the phase transition temperature range was between 16.97 ~ 28.94 oC, within the comfort range of human body. The optimized D-P-SiO2@TiO2 PCM had high specific surface area and multiple pore structure, so it can regulate air humidity. Further analysis of the preparation mechanism of D-P-SiO2@TiO2 PCM showed that the super-water system and acidic conditions were favorable for the hydrolysis of tetraethyl silicate to generate SiO2 with 3D short chain structure, so as to effectively encapsulate the decanoic acid-palmitic acid compound phase change material. The pH controlled 2 ~ 3 was necessary for hydrolyzing of tetraethyl titanate into anatase phase TiO2. The above is the basis conditions for preparing D-P-SiO2@TiO2 PCM with photocatalytic-humidity performance.