bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of Integrated-Weight Water Quality Index in Groundwater Quality Evaluation
Authors: Nguyen Thanh Giao , Phan Kim Anh , Huynh Thi Hong Nhien 
Published: December 2022

Groundwater is one of the most crucial freshwater resources in many parts of the world. However, the growth of the population and different economic activities have negatively impacted groundwater quality. This study aims to assess the groundwater quality in An-Giang province, Vietnam, from 2017–2020 and investigate its suitability for drinking via a new integrated-weight water quality index (IWQI). The samples were collected at thirteen wells in dry and rainy seasons and analyzed for eleven physicochemical parameters, including pH, total dissolved solids (TDS), total hardness, nitrate (NO3ˉ), ammonium (NH4+), iron (Fe), manganese (Mn), arsenic (As), mercury (Hg), lead (Pb), and coliform. These values were compared to the Vietnamese standard. The entropy weight method and the Criteria Importance Though Inter-criteria The correlation weighting method was integrated to compute the weights in IWQI. The results showed that NH4+and coliform concentrations were consecutively higher than the standard over the study period. No detection of As, Hg, and Pb concentrations in groundwater was in 2019 – 2020. There were significant statistical differences between parameters from 2017–2020 in the dry and rainy seasons. The results of IWQI revealed that about 40% of the total samples in 2020 were categorized as unsuitable for drinking. IWQI values range from 72 to 7973 in 2020, 12 to 3020 in 2019, 21 to 1115 in 2018, and 53 to 2246 in 2017. Most samples with high IWQI values are located near the burial pits of African fever-infected swine. The findings of this study could provide further information about the changes in groundwater quality from 2017–2020 in An Giang province, Vietnam, and the IWQI method can be proposed for other studies to evaluate groundwater quality effectively. Doi: 10.28991/CEJ-2022-08-11-020 Full Text: PDF
Optimal Compressive Strength of RHA Ultra-High-Performance Lightweight Concrete (UHPLC) and Its Environmental Performance Using Life Cycle Assessment
Authors: Onyelowe Kennedy C. , Ebid Ahmed M. , Mahdi Hisham A. , Riofrio Ariel , Eidgahee Danial Rezazadeh , Baykara Haci , Soleymani Atefeh , Kontoni Denise-Penelope N. , Shakeri Jamshid , Jahangir Hashem 
Published: December 2022

Frequent laboratory needs during the production of concrete for infrastructure development purposes are a factor of serious concern for sustainable development. In order to overcome this trend, an intelligent forecast of the concrete properties based on multiple data points collected from various concrete mixes produced and cured under different conditions is adopted. It is equally important to consider the impact of the concrete components in this attempt to take care of the environmental risks involved in this production. In this work, 192 mixes of an ultra-high-performance lightweight concrete (UHPLC) were collected from literature representing different mixes cured under different periods and laboratory conditions. These mix proportions constitute measured variables, which are curing age (A), cement content (C), fine aggregate (FAg), plasticizer (PL), and rice husk ash (RHA). The studied concrete property was the unconfined compressive strength (Fc). This exercise was necessary to reduce multiple dependence on laboratory examinations by proposing concrete strength equations. First, the life cycle assessment evaluation was conducted on the rice husk ash-based UHPLC, and the results from the 192 mixes show that the C-783 mix (87 kg/m3 RHA) has the highest score on the environmental performance evaluation, while C-300 (75 kg/m3 RHA) with life cycle indices of 289.85 kg CO2eq. Global warming potential (GWP), 0.66 kg SO2eq. Terrestrial acidification and 5.77 m3 water consumption was selected to be the optimal choice due to its good profile in the LCA and the Fc associated with the mix. Second, intelligent predictions were conducted by using six algorithms (ANN-BP), (ANN-GRG), (ANN-GA), (GP), (EPR), and (GMDH-Combi). The results show that (ANN-BP) with performance indices of R; 0.989, R2; 0.979, mean square error (MSE); 2252.55, root mean squared error (RMSE); 42.46 MPa and mean absolute percentage error (MAPE); 4.95% outclassed the other five techniques and is selected as the decisive model. However, it also compared well and outclassed previous models, which had used gene expression programming (GEP) and random forest regression (RFR) and achieved R2of 0.96 and 0.91, respectively. Doi: 10.28991/CEJ-2022-08-11-03 Full Text: PDF
Eco-friendly Super Sulphated Cement Concrete Using Vietnam Phosphogypsum and Sodium Carbonate Na2CO3
Authors: Nguyen Ngoc Lam , Vu Phuong Le 
Published: December 2022

Sustainable development is one of the critical topics in the construction industry today, especially in reducing CO2 emissions and production energy costs. There have been many studies worldwide on using ground granulated blast furnace slag combined with phosphogypsum (PG) to replace binder (B) in making concrete. However, this topic in Vietnam has not received much attention despite the large backlog of phosphogypsum waste. One of the main disadvantages limiting the feasibility of super-sulphated binders in concrete is the relatively slow hydration and hardening processes, which affect the rate of strength development of mortar and concrete, especially at an early age. In this study, the use of Na2CO3 salt as a quick, solid additive can overcome the disadvantages of this type of binder. Research results show that using 15 to 25% phosphorus gypsum waste (PG) and a combination of 60 to 80% finely granulated blast furnace slag (GGBFS) with a small amount of cement and an activator like Na2CO3can replace cement in making concrete. The concrete mix has good workability, and the maximum compressive strength after 28 days can reach over 50 MPa. Using industrial wastes as the main ingredients to make binders will improve sustainable development, reducing environmental pollution and the cost of mortar and concrete products in construction. Doi: 10.28991/CEJ-2022-08-11-06 Full Text: PDF
Sistem Informasi Covid-19 Berbasis Mobile Dengan Framework Flutter dan Application Programming Interface (API)
Authors: Setiawan Hermawan , Ghiffari Muhammad Novrizal 
Published: December 2022

The corona virus (COVID-19) has been happen for long time on the world, recently there is a new variant, namely omicron, which is rapidly spreading throughout the world, especially in Indonesia. The lack and difficulty to creating of spreading data of corona virus, it makes difficulty to know the information of corona virus cases for people especially for people who want doing kinds of trip. This research uses Information system of Covid-19 to plan the flutter framework and uses APIs to be able to solve these problems. The implementation of Flutter and API can easily collaborate to exchange the data in JSON format, so that data of covid-19 cases and their problems can be handled in the information system.
ANALISIS RESPON SISWA TERHADAP PENGGUNAAN GAME EDUKASI QUIZIZZ DALAM PEMBELAJARAN MATEMATIKA
Authors: Rizky Muhammad Rafi Fajar , Marhaeni Nafida Hetty , Budiningsih Veronica Anita 
Published: December 2022

Abstrak:Tujuan penelitian adalah untuk mengetahui respon peserta didik terhadap penggunaan game edukasi Quizizz dalam pembelajaran matematika. Penelitian ini merupakan penelitian deskriptif kuantitatif tentang tingkat kepuasan peserta didik dalam proses pembelajaran matematika menggukan Quizizz. Data yang akan digunakan merupakan data yang didapatkan melalui angket respon peserta didik. Respons peserta didik dikumpulkan menggunakan angket dengan skala likert, kemudian dianalisis menggunakan teknik kategorisasi data. Populasi yang digunakan pada penelitian ini adalah peserta didik SMA Negeri 1 Pengasih di kelas X MIPA 2. Sampel yang digunakan adalah 36 peserta didik dengan 18 peserta didik dengan hasil belajar rendah (B1) dan 18 peserta didik dengan hasil belajar tinggi (B2). Instrumen yang digunakan pada penelitian ini adalah Quizizz yang dikembangkan oleh peneliti dan angket respon peserta didik. Hasil penelitian terhadap penggunaan Quizizz yang dikembangkan oleh peneliti menunjukkan bahwa pada peserta didik B1 menunjukkan bahwa Quizizz yang digunakan bermanfaat, mudah dipakai, mudah dipelajari, dan peserta didik B1 puas dengan Quizizz yang digunakan. Sedangkan pada peserta didik B2 menunjukkan bahwa Quizizz yang digunakan bermanfaat, mudah dipakai, mudah dipelajari, dan peserta didik B2 puas dengan Quizizz yang digunakan. Selain itu, diperoleh data hasil uji statistik yang mengatakan bahwa walaupun peserta didik B1 dan B2 memiliki perbedaan hasil belajar, itu tidak mempengaruhi respon peserta didik terhadap proses pembelajaran menggunakan Quizizz. Abstract:The purpose of the study was to determine the response of students to the use of educational games Quizizz in learning mathematics. This research is a descriptive study about the level of student satisfaction in the learning process using Quizizz. Student responses were collected using a questionnaire with a Likert scale, then analysed using data categorization techniques. The population used in this study were students of SMA Negeri 1 Pengasih in class X MIPA 2. The sample used was 36 students with 18 students with low learning outcomes (B1) and 18 students with high learning outcomes (B2). The instrument used in this research is Quizizz which was developed by the researcher and student response questionnaire. The results of the study on the use of Quizizz developed by the researchers showed that the B1 students showed that the Quizizz used was useful, easy to use, easy to learn, and the B1 students were satisfied with the Quizizz used. Meanwhile, B2 students showed that the Quizizz used was useful, easy to use, easy to learn, and B2 students were satisfied with the Quizizz used. In addition, statistical test results were obtained which said that although students B1 and B2 had different learning outcomes, it did not affect students' responses to the learning process using Quizizz
PERNIKAHAN PADA ANAK USIA SEKOLAH DI DESA PAOK PAMPANG KECAMATAN SUKAMULIA KABUPATEN LOMBOK TIMUR
Authors: Panbriani Septi , Yuliatin Yuliatin , Zubair Muh , Rispawati Rispawati 
Published: December 2022

Abstrak: Penelitian ini bertujuan untuk mengetahui: (1) Pernikahan pada anak usia sekolah di Desa Paok Pampang Kecamatan Sukamulia Kabupaten Lombok Timur; (2) Faktor penyebab terjadinya pernikahan pada anak usia sekolah di Desa Paok Pampang Kecamatan Sukamulia Kabupaten Lombok Timur; (3) Upaya pemerintah desa dalam menangani pernikahan pada anak usia sekolah di Desa Paok Pampang Kecamatan Sukamulia Kabupaten Lombok Timur. Pendekatan yang digunakan dalam penelitian ini adalah pendekatan kualitatif dengan jenis penelitian studi kasus. Teknik pengumpulan data yang digunakan yaitu observasi, wawancara, dan dokumentasi. Teknik analisis data menggunakan teknik analisis Miles and Huberman. Hasil penelitian menunjukkan bahwa pernikahan anak usia sekolah di Desa Paok Pampang Kecamatan Sukamulia Kabupaten Lombok Timur masih tergolong cukup tinggi. Faktor penyebab pernikahan anak di Desa Paok Pampang adalah faktor lingkungan, faktor budaya dan faktor pendidikan. Upaya yang dilakukan oleh Pemerintah Desa Paok Pampang Kecamatan Sukamulia Kabupaten Lombok Timur untuk menekan laju dari pernikahan anak usia sekolah adalah dengan membuat suatu Peraturan Desa (Perdes), sosialisasi, diskusi, dan ceramah-ceramah tentang pencegahan pernikahan pada usia sekolah.Abstract: This study aims to determine: (1) Marriage of school-age children in the village of Paok Pampang Sukamulia District East Lombok Regency; (2) Factors that cause marriage in school-age children in Paok Pampang Village, Sukamulia District, East Lombok Regency; (3) The village government’s efforts in dealing with marriage for school-age children in Paok Pampang Village, Sukamulia District, East Lombok Regency. The approach used in this research is a qualitative approach with the type of case study research. Data collection techniques used are observation, interviews, and documentation. The data analysis technique used the Miles and Huberman analysis technique. The results showed that the marriage of school-age children in Paok Pampang Village, Sukamulia District, East Lombok Regency was still quite high. Factors causing child marriage in Paok Pampang Village are environmental factors, cultural factors and educational factors. Efforts made by the Paok Pampang Village Government, Sukamulia District, East Lombok Regency to reduce the rate of marriage of school-age children are to make a Village Regulation (Perdes), socialization, discussions, and lectures on prevention marriage at school age.
PENGEMBANGAN LKS INTERAKTIF SCIENCE LIVE WORKSHEET BERBASIS HOTS SISWA SEKOLAH DASAR
Authors: Sari Nursina , Haifaturrahmah Haifaturrahmah , Ratu Tursina , Widiartini Ni Nengah , Erfan Muhammad 
Published: December 2022

Abstrak: Lembar Kerja Siswa (LKS) merupakan salah satu media ajar yang harus dikembangkan oleh pendidik dalam upaya menunjang pelaksanaan kegiatan belajar mengajar terutama mata pelajaran yang memiliki muatan IPA. Tujuan penelitian ini untuk mengetahui: (1) Kevalidan, (2) Kepraktisan, serta (3) Keefektifan dari produk LKS interaktif Science’s live worksheet berbasis HOTS dalam pembelajaran siswa di Sekolah Dasar (SD). Jenis penelitian ini adalah R&D (Research & Development) dengan mengadaptasi model dari Borg & Gall, dan menggunakan desain kelas one group pretes- posttest design. Adapun hasil pengembangan dari LKS interaktif Science’s live worksheet berbasis HOTS menunjukkan hasil bahwa (1) Kevalidan dari produk LKS interaktif Science’s live worksheet berbasis HOTS berhasil dikembangkan persentase kevalidan produk sebesar sebesar 96,67%%, yang termasuk dalam kategori “Sangat Valid” (2) Kepraktisan dari produk LKS interaktif Science’s live worksheet berbasis HOTS dengan hasil rata-rata 98% di kategori “sangat praktis, (3) Keefektifan dari LKS interaktif Science’s live worksheet berbasis HOTS dengan besarnya n-gain skor memperoleh 0,7 yang termasuk dalam kategori tinggi. Dengan demikian, LKS interaktif science’s liveworksheets yang dikembangkan valid, praktis, dan efektif digunakan dalam pembelajaran sains di sekolah dasar.Abstract: Student Worksheet (LKS) is one of the teaching media that must be developed by educators in an effort to support the implementation of teaching and learning activities, especially subjects that have science content. The purpose of this study was to determine: (1) Validity, (2) Practicality, and (3) Effectiveness of the HOTS-based interactive Science's liveworksheet in student learning in elementary schools. This type of research is R&D (Research & Development) by adapting the model from Borg & Gall, and using a one-group pretest-posttest design. The results of the development of the HOTS-based interactive Science's live worksheet shows that (1) The validity of the HOTS-based Science's live worksheet interactive product has been successfully developed, the percentage of product validity is 96.67%%, which is included in the "Very Valid" category (2 ) The practicality of the HOTS-based interactive Science's live worksheet with an average result of 98% in the “very practical” category, (3) The effectiveness of the HOTS-based Science's live worksheet with an average n-gain score of 0.7 is included high in the HOTS category. Thus, the interactive science's live worksheets developed are valid, practical, and effective for use in science learning in elementary schools.
The impact of foreign trade policy on food independence for separate commodity groups: Methodological aspects
Authors: Prokopyev Michail 
Published: December 2022

The article considers the problem of the impact of foreign trade policy and external environment (world trade conditions) on the food independence of the country. The aim of the study is to develop a toolkit to quantify the impact of foreign trade policy on the indicator of food self-sufficiency in certain commodity groups of food and agricultural raw materials. The study is based on methodological approaches to assess the effect of import and export prices transfer in domestic prices under imperfect substitution and imperfect transformation. Imperfect substitution of the domestic and imported products on the domestic market and imperfect transformation of food flows between domestic and foreign markets are largely a consequence of the heterogeneity of commodity groups both on the import and export side, and domestic consumption. The reasons for heterogeneity of commodity groups are considered and their classification is given. In particular, the commodity groups of import substitution and export-oriented commodity groups are distinguished. For each of them the equilibrium conditions of supply and demand for domestic products on the domestic market, which have a significant impact on the formation of domestic prices, are considered. The effect of export and import prices transfer on aggregate demand (domestic and imported goods composite on the domestic market) and aggregate supply (domestic products composite for external and domestic markets) is shown. A toolkit is proposed to analyze the impact of &quot;perturbations&quot; — small deviations of exogenous parameters of foreign trade policy on food independence by separate commodity groups. A qualitative analysis of the impact of import tariffs, export subsidies and export duties, as well as world prices on the indicator of food self-sufficiency is given.
Analisa Kerapatan dan Kadar Abu pada Kayu Kapur (Drobalanops sp.) yang Terinfeksi Jamur Pelapuk Putih (Schizophyllum commune)
Authors: Yustika Erlina , Erwin Erwin , Husien Nani , Budi Agus Sulistyo , Wahyuni Sri 
Published: December 2022

Penelitan ini merupakan lanjutan dari penelitian sebelumnya mengenai kehilangan berat kayu kapur (Dryobalanops sp) yang diinokulasi menggunakan jamur pelapuk putih (Schizophyllum commune) dengan nilai kehilangan berat kayu sebesar 0,12%. Inokulasi jamur S.commune dilakukan terhadap sampel Kayu Kapur pada media PDA (Potato Dextrose Agar) dengan masa inkubasi selama 4 minggu, Pengujian nilai kerapatan kayu dan nilai kadar abu dilakukan sebelum dan sesudah inokulasi dengan masing-masing menggunakan standar DIN 32182 dan TAPPI T211 om-93. Hasil penelitian menunjukkan terjadinya perbedaan yang tidak signifikan pada penurunan nilai kerapatan kayu dan peningkatan nilai kadar abu dari kayu kapur yang diinfeksi oleh jamur S.commune pada masa inkubasi selama 4 minggu
Formación del docente universitario frente al contexto pluricultural, pluriétnico y plurilingüe
Authors: Guaita Lagua Zoila Clemencia , Guaita Lagua Luz Adelaida , Guaita Lagua Segundo Fidel , Guaita Lagua Segundo Martín 
Published: December 2022

Introducción: en las últimas décadas, los pueblos indígenas y afrodescendientes del Ecuador y América Latina han venido logrando avances significativos en varios asuntos que competen a su calidad de vida. No obstante, estos avances son aún insuficientes en el campo educativo. Al respecto, la formación del docente universitario es trascendental para lograr la inclusión educativa de todos los alumnos de diferentes culturas. Puesto que, el docente con conocimientos de contexto pluricultural y plurilingüe contribuye a la aceptación de la complejidad de cada ser humano y reconoce que todos los actores educativos son pluriculturales y se puede trabajar juntos para lograr una sociedad intercultural. Objetivos: este trabajo investigativo se plantea con el propósito de identificar el rol docente universitario y su cumplimiento frente a la diversidad de sus estudiantes. De la misma manera identificar que andragogía se está utilizando para la inclusión de lo lingüístico, cultural, social, religioso y axiológico de los estudiantes. Metodología: esta investigación se realizó mediante un enfoque cualitativo y cuantitativo que permitió apreciar la información obtenida sobre la práctica educativa incluyente en instituciones de pueblos originarios. La investigación se apoyó en la modalidad bibliográfica y de Campo con la sustentación teórica y acercamiento a la realidad educativa. El trabajo investigativo presenta un nivel exploratorio y descriptivo. Las técnicas que se aplicaron fueron la entrevista con una guía de 10 preguntas dirigidas a 20 docentes que laboran en diferentes Instituciones Educativas de educación superior. Resultados: los resultados expresan que las instituciones educativas no pueden seguir considerando como una educación compensatoria, si no es urgente crear condiciones necesarias para que los alumnos de diferentes culturas dispongas un tipo de procesos de aprendizaje pertinente a su realidad sociocultural. Área de estudio o rama de la ciencia: Educación Básica
O OLHAR DA PESQUISADORA SOBRE SUA TRAJETÓRIA INTELECTUAL
Authors: Zembruski Soeli Staub , Machado dos Santos Adelcio 
Published: December 2022

O presente texto é resultado de pesquisa e reflexão sobre a identidade linguística da pesquisadora. Formada a partir de uma trajetória peculiar, a mesma é apresentada por meio de comparação de dados com pesquisas anteriores, desenvolvidas por outros pesquisadores da região, acerca dos falares regionais do oeste de Santa Catarina. E, se propõe a descrever o contexto multilinguístico vivenciado durante o período da primeira infância e adolescência. Ao refletir sobre sua trajetória, a professora identifica influências e confluências que compõem sua identidade linguística e as observa no contexto da docência identificando a presença, ainda que ocasional, de características linguísticas do período de aquisição da fala e escrita. O estudo é a primeira etapa de um projeto de observação das características e peculiaridades das manifestações orais no espaço acadêmico. Nesse sentido, introduz a discussão que será ampliada por um segundo texto, a ser publicado em breve, e que traz uma pesquisa e observação das manifestações de comunicação oral em turma de mestrado na qual a professora atuou no contexto pandêmico com a transição das presenciais para as síncronas. O estudo não se pretende conclusivo, e sim, mais um passo no sentido de maior compreensão do processo de comunicação humana.
Palavras chave: Linguagem. Pesquisa. Introspecção.

ABSTRACT
This text is the result of a research and a reflection about the researcher's linguistic identity. Built up from a peculiar pathway, it is presented in comparison with data provided by other previous researchers from the same region (Santa Catarina’s Westside). The purpose of this study is to describe the multilingual context that was experienced by the professor in her early years and adolescence. Thinking about her trajectory, she identifies influences and confluences that are part of her linguistic identity and observe them in the teaching process identifying the presence, event eventual, of característics observed in childhood and teenage years. The study is the first part of a project that observes characterics of oral communication in academic spaces. This way, it initiates the discussion that will be continued in a second text, that will be published soon, bringing a research on oral communication in a mastership program class in which the professor worked during the pandemic times and the transition from presencial classes into synchronous classes. This study does not intend to be conclusive, but another step to better comprehension about human communication.
Keywords: Language. Research. Insight.