bluuebunny/crossref_metadata_2025 huggingface dataset:
A HISTORIOGRAFIA DAS INSTITUIÇÕES DE EDUCAÇÃO INFANTIL: mapeamento das teses e dissertações produzidas no Brasil entre 2009 e 2021
Authors: De Mello Moraes Juliana , Oliveira Claudinete de Fátima
Published: June 2023

O presente artigo tem o objetivo de mapear e analisar os estudos realizados nos Programas de Pós-Graduação no Brasil sobre a história das instituições de educação infantil entre os anos de 2009 e 2021. O arco cronológico adota como princípio o ano da promulgação da segunda versão revisada e ampliada das Diretrizes Curriculares Nacionais para a Educação Infantil (Brasil, 2009), documento de caráter mandatório que norteia o trabalho realizado com as crianças. A partir da consulta no Banco de dados da Biblioteca Digital de Teses e Dissertações (BDTD) e no Banco de Teses e Dissertações da CAPES, constatamos o panorama das pesquisas realizadas no Brasil no referido período. Os temas abordados nos trabalhos, que constituíram o corpus desse estudo, exploraram os aspectos históricos de como se constituiu o atendimento infantil no Brasil, sua implantação e expansão em diferentes localidades, tais como cidades ou Estados. Constatamos ainda que a maioria dos estudos foi desenvolvida nas instituições de Ensino Superior localizadas nas regiões Sul e Sudeste, sobretudo nos Programas de Pós-Graduação em Educação. Essas pesquisas apresentaram importantes considerações sobre a emergência das instituições de educação infantil. Concluímos, contudo, que ainda há muitos campos a serem explorados com relação à história da educação das crianças pequenas no país.
Design of a solar mango dryer for rural sectors located in Piura-Peru
Authors: Freddy J. Rojas  , David Huarcaya
Published: June 2023

In the present study, the energy design of an indirect solar dryer with the capacity to dehydrate 10 kg of mango was carried out. The methodology used was based on calculations of heat transfer, thermodynamics and dimensioning of the main components which are the solar collector and the drying chamber. As results, it was analyzed that the ambient air must enter the collector with a minimum speed of 1.175 m/s; the air increases its temperature to approximately 45 °C when passing through the collector thanks to the energy in the form of heat that is supplied, this energy being 1.363 kW, the drying process time was established in 8 hours and the environmental conditions in the Piura region were considered. Additionally, simulations were carried out that allow to know the behavior of the drying air inside the drying chamber, allowing to analyze and discuss the reason for the results that are observed graphically and numerically. It is concluded that the indirect solar dryer is a friendly option with the environment since renewable energy such as solar energy is used, thus replacing traditional dryers that generate polluting gases or use electrical sources.
MATLAB® Modeling of a Microgrid: Towards a Vision Based on Entropy Balance
Authors: Ameer Abdullah Khan  , Herminio Martínez-García  , Àngel Cuadras-Tomás
Published: June 2023

A microgrid is defined as the link of consumer loads and decentralized energy assets with the ability to control the entire system as a whole. The modeling of an electromagnetic microgrid is discussed in this work to analyze energy effectiveness and entropy balance. The method computes the associated losses and simulates the electrical behavior of the components. The model is built and tested by using the MATLAB Simulink application. The system is made up of several blocks consisting of solar panels, batteries, consumer loads, and the inverter needed to connect them all. Their energy efficiency is assessed using the findings from each of these components. The system's entropy generation is also calculated to study how it relates to performance.
A method to assess the performance of small wind turbines
Authors: W.-G. Früh
Published: June 2023

While large wind farms are well monitored, with a wealth of data provided through a SCADA system, the only information about the behaviour of small wind turbines is often only through the metered electricity production. Given the variable electricity output, it is difficult to ascertain whether a particular electricity production in a metering period is the result of the turbine operating normally, or if a fault is resulting in a production less than possible. This paper presents a method to correlate metered electricity output from a set of 5 kW wind turbines with weather information from a weather station some distance from the turbine. That correlation will then be classified into ‘expected’ and ‘unusual’ performance using Principal Component Analysis.
On Single-Input Dual-Output (SIDO) DC/DC Multi-Port Converters for DC Microgrid Applications
Authors: Herminio Martínez-García  , Encarna García-Vílchez
Published: June 2023

This paper proposes the use of linear-assisted switching power converters in the context of single-inductor dual-output (SIDO) for microgrids (MG) applications. By combining a DC/DC ripple-controlled switching power converter with the respective voltage linear regulators at each output, improved performance in terms of load and line regulations is obtained. To achieve that aim, a current-steering switching policy is proposed, together with a resource-aware circuit implementation. The ripple-based hysteretic control results in variable switching frequency to guarantee critical conduction mode (boundary of CCM and DCM).
Modeling of a stand-alone solar photovoltaic water pumping system for irrigation
Authors: J.S. Artal-Sevil  , V. Ballestín-Bernad  , J. Lujano-Rojas  , R. Dufo-López  , J.L. Bernal-Agustín
Published: June 2023

Solar  photovoltaic  water  pumping systems  have  been  research topics in recent decades. The purpose was to develop much more profitable  and  efficient  systems  to  meet  the  needs  of  pumping water for livestock and irrigation. This paper describes the design of  a  stand-alone  photovoltaic  water  pumping  system.  A  Boost converter is used to apply the Maximum Power Point Tracking (MPPT)  algorithm.  Similarly,  a  three-phase  voltage  source converter (VSC) is used to supply the asynchronous motor. The installation  must  provide  a  continuous  water  flow  during  the irrigation  interval.  It  has  been  verified  that  in  adverse  weather conditions  (cloud  transits or partly cloudy) it is necessary to incorporate a decentralized-hybrid energy storage system (basedon batteries or ultracapacitors), or excessively oversize the stand-alone photovoltaic system, to supply the water pump. The model has  been  simulated  in  Matlab-Simulink.  In  this  way,  different simulations have been developed to verify the basic characteristics of the proposed system. The results of the simulated model and the conclusions obtained are also presented in this paper.
Performance of Resonant Chambers in Oscillating Water Column Devices
Authors: Juan D. Parra-Quintero  , Ainhoa Rubio-Clemente  , Edwin Chica
Published: June 2023

The utilization of marine power potential in Colombia holds a great promise, and the oscillating water column (OWC) is one option that deserves to be explored. The wave energy conversion process using an OWC typically involves two stages: the conversion of wave power to pneumatic power in an air chamber, and the conversion of pneumatic power to electricity using a selfrectifying air turbine coupled to an electric generator. In order to improve the efficiency of the primary stage, this study is aiming at determining the hydrodynamic performance of an OWC air chamber using a numerical model based on the Reynolds Averaged Navier-Stokes equations and the Volume of Fluid approach for free surface simulation. The chamber geometry was based on a U-shaped OWC. The maximum efficiency and the mean velocity of the chamber free surface were found to be 66.8% and 0.17 m/s, respectively. The numerical results for the wave height obtained through simulation were validated by comparing them to analytical expressions reported in the existing literature, and a significant level of agreement was observed. Optimizing the chamber shape parameters for the specific wave characteristics is concluded to be crucial to enhance the operating efficiency of the OWC.
Power Quality Analysis of Photovoltaic Systems
Authors: M.Barreto  , A. Guananga  , A. Barragán  , E. Zalamea  , X. Serrano
Published: June 2023

This research analyses the quality of the electricity produced on photovoltaic systems connected to the power grid in the  city  of  Cuenca  (Ecuador).  For  this,  an  overview  of  the literature  and  the  Ecuadorian,  American,  and  European regulations  concerning  power  quality  was  carried  out  to determine the regulatory parameters and admissible limits. From the quality records, it is concluded that, in general, there are no power  quality  problems,  except  for  momentary  current imbalances. In one of the cases, violations of voltage parameters, voltage unbalance, current unbalance and flicker were found. The recommended  parameters  to  be  included  in  the  Ecuadorian quality  standards  are  individual  harmonic  distortion  and frequency have been registered.
Technical, economic, and environmental analysis to define the conditions for the implementation of charge stations, a case study in the city of Azogues - Ecuador
Authors: E. García  , C. Minchala  , E. Barragán  , E. Zalamea
Published: June 2023

Reducing environmental pollution caused by traditional mobility solutions, such as combustion vehicles, requires a deep dive into sustainable mobility. Consequently, promoting electric vehicles (EVs) constitutes a long-hanging fruit for establishing a route map for decarbonizing city mobility. Nevertheless, several tasks require urgent attention to allow EV technology to deploy in cities. For instance, optimal locations of charging stations for EVs by considering a multicriteria approach are urgently required. This work studies the most feasible alternatives for locating and implementing EV chargers (EVC) in Azogues, Ecuador. This study applies Promethee multicriteria method, considering three different location alternatives in the city and four criteria that will be divided into ten subcriteria for the analysis. First, the multi-objective function´s weighting factors were established using three weighting methods: equal weighting, point allocation, and critical weighting. Once the matrix of sub-criteria with their weights was established, Visual Promethee, which works with Promethee II, was applied to establish the optimal candidate site. The results of this optimization analysis indicate an optimal location for the EVC.
https://dx.doi.org/10.24093/awej/vol14no2.24
Authors: Zhang Xiaohui , Diana Deris Farhana
Published: June 2023

Despite a plethora of studies on practice of Content and Language Integrated Learning in most European countries, few have examined Content and Language Integrated Learning teacher training in China. This study aimed to examine the effectiveness of a Content and Language Integrated Learning teacher training platform for elementary English education in China. It sought to answer the following main research questions: What are the contents differences in Content and Language Integrated Learning teacher training in China? What are in-service English teachers’ perceptions of Content and Language Integrated Learning after the training? And What are the factors which affect the training effect? The qualitative evidence showed that the training content of the teacher platform in China has been flexibly designed following the Chinese elementary English education context, but it also reflected the lack of consideration of teachers’ individual needs in the design of the platform’s training content and the lack of practical sessions and the long-term follow-up support. The statistical evidence showed that teaching experience significantly determines Content and Language Integrated Learning efficacy, and the educational background has little bearing on Content and Language Integrated Learning perceptions. Furthermore, all teachers from different educational backgrounds had a positive perception of their Content and Language Integrated Learning competence. However, Participants believed that their theoretical knowledge and teaching abilities are not equal, which suggests that instructors in this field urgently need help. Further research examining the cultivation of pre-service Content and Language Integrated Learning teachers would be worthy of investigation.
A Review of Intended Learning Outcomes of English Lessons and Learning Motivation
Authors: Albatti Hamood
Published: June 2023

This study uses a descriptive narrative approach to critically analyze the evidence and findings from the recently published literature. The results indicate that explicitly stating the Intended Learning Outcomes and planning are essential for practical English Language Teaching and Learning and are critical for effective English Language Learning. Findings suggest that adopting specific instructional strategies such as graphic organizers that record what students know, what they want to know, and what they have learned significantly improves communicating Intended Learning Outcomes to students and, thereby, activating their schema for language acquisition and cognitive and affective engagement in learning. The study recommends further conducting a systematic scoping review providing suggested strategies that improve students’ engagement in the assessment process. It also provides an overview of learning motivation theories and highlights their direct bearing on achieving Intended Learning Outcomes during the learning process.
The Construction of Racism in Cartoon Films: A Critical Discourse Analysis
Authors: Audah Kadhim Noor , Fadhil Abbas Nawal
Published: June 2023

Animation is an industry that is expanding more quickly than ever. Every child’s favorite activity is watching cartoons. Therefore, it is essential to be cautious of the kinds of cartoon films children and teenagers tend. Because children and teenagers are the target audience for these films. This study aims at exposing a hidden enactment, namely racism, in a well-known cartoon film, Lion King, which has been selected accurately by the researchers because it shapes a set of ideas about black people and constructs prejudiced beliefs in their minds. This study is to answer the inquiry ‘Is the ideology of racism imposed in Lion King? And how?’ The significance of the present paper lies in highlighting the educational function of cartoon films so parents and caregivers become more aware. In addition, this study is crucial for researchers in the critical discourse analysis approach in the sense of how van Dijk’s (2000) model can be applied to children’s literature. The ideology of racism is investigated in the language of the film’s characters. The researchers have concluded that the ideology of racism is promoted in Lion King using various linguistic tools and strategies.
Kontribusi Latihan Straight Bounding Dan Box Skip Terhadap Hasil Lompat Jauh Gaya Jongkok Pada Atlet Lompat Jauh Putra SMAN 2 Kisaran
Authors: Pane Nuraini S , Sitepu Indra Darma
Published: June 2023

Penelitian ini bertujuan untuk mengetahui latihan straight bounding dan box skip terhadap hasil lompat jauh gaya jongkok pada atlet lompat jauh putra SMAN 2 Kisaran. Jumlah sampel atlet yang digunakan sebanyak 7 orang diperoleh dengan teknik pengambilan sampel yang digunakan yakni purposive sampling. Penelitian ini dilaksanakan pada bulan Desember 2021 hingga Januari 2022. Hasil analisis uji hipotesis pertama ditemukan bahwa terdapat kontribusi yang signifikan dari latihan straight bounding terhadap hasil lompat jauh gaya jongkok sebesar 9,35% pada atlet lompat jauh putra SMAN 2 Kisaran. Hasil analisis uji hipotesis kedua ditemukan bahwa terdapat kontribusi yang signifikan dari latihan box skip terhadap hasil lompat jauh gaya jongkok sebesar 28,15% pada atlet lompat jauh putra SMAN 2 Kisaran. Hasil analisis uji hipotesis ketiga ditemukan bahwa terdapat kontribusi yang signifikan secara bersama-sama antara latihan straight bounding dan box skip terhadap hasil lompat jauh gaya jongkok sebesar 32,48 % pada atlet lompat jauh putra SMAN 2 Kisaran.
Interelasi Daya Ledak Otot Tungkai dan Koordinasi Mata Kaki dengan Akurasi Shooting Futsal
Authors: Perdana Robby , Mariati Sari , S Afrizal , Arifan Ikhwanul , Soniawan Vega
Published: June 2023

Tujuan penelitian ini adalah untuk mengetahui interelasi antara daya ledak otot tungkai dan koordinasi mata kaki dengan akurasi shooting. Jenis penelitian ini adalah penelitian korelasional. Populasi dalam penelitian ini adalah seluruh atlet Tamar Futsal Kota Pariaman yang berjumlah 30 orang atlet. Teknik pengambilan sampel menggunakan teknik purposive sampling, maka jumlah sampel dalam penelitian ini adalah sebanyak 20 orang atlet putra. Instrumen dalam penelitian ini adalah: 1) standing broad jump test, 2) tes koordinasi mata kaki, dan 3) tes kemampuan akurasi shooting. Teknik analisis data menggunakan analis korelasi sederhana atau product momen dan korelasi berganda, kemudian dilanjutkan dengan analisis signifikansi dengan uji t dan uji F. Hasil penelitian ini adalah: 1) Terdapat interelasi antara daya ledak otot tungkai dengan akurasi shooting atlet Tamar Futsal Kota Pariaman dengan thitung 2,44 > ttabel 1,73 2) Terdapat interelasi antara koordinasi mata kaki dengan akurasi shooting atlet Tamar Futsal Kota Pariaman dengan thitung 2,54 > ttabel 1,73, 3) Terdapat interelasi antara daya ledak otot tungkai dan  koordinasi mata kaki secara bersama-sama dengan akurasi shooting atlet Tamar Futsal Kota Pariaman dengan Fhitung 5,22 > Ftabel 3,59.
Survei Tingkat Kesegaran Jasmani Siswa yang Mengikuti Ekstrakurikuler Olahraga Sepak Bola
Authors: Saputra Angga , Akhbar M Taheri , Candra Juli
Published: June 2023

Penelitian ini bertujuan untuk mengetahui tingkat kesegaran jasmani siswa yang mengikuti ekstrakurikuler olahraga sepak bola SMP Negeri 5 Gunung Megang. Metode dalam penelitian ini adalah metode deskriptif kuantitatif, sampel berasal dari siswa putra yang mengikuti ekstrakurikuler sepakbola pada SMP Negeri 5 Gunung Megang pada tahun ajaran 2020/2021 sebanyak 30 orang, sumber data dalam penelitian ini adalah data primer yang kemudian di olah kembali oleh peneliti, teknik pengumpulan data yang digunakan adalah teknik tes praktek atau perbuatan dan pengukuran. Hasil penelitian menunjukkan bahwa tingkat kesegaran jasmani siswa yang mengikuti ekstrakurikuler sepak bola berada dalam kategori Baik Sekali yaitu 6,7%, kategori Baik yaitu 53,3%, kategori Sedang yaitu 26,7%, kategori kurang yaitu 13,3%. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa tingkat kesegaran jasmani siswa yang mengikuti ekstrakurikuler di SMP Negeri 5 Gunung Megang dominan berada pada tingkat sangat baik dan baik.
DEVELOPMENT ANALYSIS OF CREATIVE THINKING TEST INSTRUMENTS ON NATURAL SCIENCE MATERIALS
Authors: Tanjung Yul Ifda , Wulandari Titis , Festiyed Festiyed , Yerimadesi Yerimadesi , Ahda Yuni
Published: June 2023

Creativity is an important part of improving learning achievement and readiness to face the globalization era which requires innovation. The success of learning creativity can be assessed through an appropriate holistic assessment instrument that contains indicators of creative thinking. Based on that, the purpose of this study is to describe the development of creativity assessment instruments that have been carried out by previous researchers through journal literature sources. The research method uses a systematic literature review of 13 selected articles that meet the criteria for achieving the research objectives. From the analysis of the literature review, conclusions are drawn, 1) Creative thinking instruments have been developed through the 4D research model, ADDIE and Borg & Gall with their respective stages, 2) Aspects of creative thinking used in developing tests refer to Torrance's theory (fluency, flexibility, originality, and elaboration). 3) In the technique of making a creative thinking item that refers to Torrance's theory, these four indicators must simultaneously form the basis for making questions. This means that through one creative thinking question can measuring fluency, flexibility, originality, and detail of the answers given by the test takers, 4) Testing the feasibility of creative thinking instruments includes validity, reliability, practicality, effectiveness, and item analysis (distinguishing power and level of difficulty).
Pengaruh Harga, Promosi Dan Kualitas Pelayanan Terhadap Keputusan Penggunaan Jasa Pada Khanza Dry N Wash Tanjung Morawa, Kab. Deli Serdang
Authors: Ramadhany Dean Tiara , Radiansyah Muhammad
Published: June 2023

This study analyzes the effect of price, promotion and service quality on the decision to use Khanza Dry N Wash services in Tanjung Morawa, Kab. Deli Serdang. The research method used in this research is descriptive quantitative. This research was conducted in Hamlet II Jl. Tirta Deli No. 90 A Tanjung Morawa. The time of this research began in January 2022 until March 2022. The population in this study were consumers of Khanza Dry n Wash Tanjung Morawa, amounting to 1,110 people. The results of using the slovin formula in this study the researchers took a sample of 92 consumers of Khanza Dry n Wash Tanjung Morawa. The analytical method used is the multiple linear regression method using the SPSS program. The results of this study indicate that the value of t-count > t-table (2.955 > 1.29114) and a significant value of 0.004 is less than 0.1, meaning that the price has a significant effect on the decision to use the services of Khanza Dry n Wash Tanjung Morawa, then Ha1 is accepted. The value of t-count > t-table (3.157 > 1.29114) and a significant value of 0.002 less than 0.1 means that promotion has a significant effect on the decision to use the services of Khanza Dry n Wash Tanjung Morawa, then Ha2 is accepted. The value of t-count > t-table 5.544 > 1.29114) and a significant value of 0.000 is smaller than 0.01, meaning that service quality has a significant effect on the decision to use the services of Khanza Dry n Wash Tanjung Morawa, then Ha3 is accepted. The value of Fcount (43.811) > Ftable (2.76), and a significance value of 0.000 < 0.1, it can be concluded that the fourth hypothesis is accepted, meaning that Price (X1), Promotion (X2), and Service Quality (X3) variables affect simultaneously (simultaneously) on the Decision to Use Services (Y). The adjusted coefficient of determination (R Square) is 0.639, this means that 63.9% of the dependent variable can be explained by the independent variable while the rest (100% - 63.9% = 36.1%) is explained by other variables outside the variables studied
Analisis Lokasi, Persepsi Konsumen Dan Kualitas Pelayanan Terhadap Loyalitas Konsumen Pada Chanet Babarsari Yogyakarta
Authors: Lahura Armando , Welsa Henny , Maharani Bernadetta Diansepti
Published: June 2023

AbstractThis study aims to determine (1) the effect of location on consumer loyalty (2) the effect ofconsumer perception on consumer loyalty (3) the effect of service quality on consumer loyalty.The sample in this study were 150 consumers of Chanet Babarsari Yogyakarta who had used theservices of the cafe Chanet Babarsari Yogyakarta. The data collection method used aquestionnaire method which was distributed with the Accidental Purposive Sampling technique.In this study using Data Quality Test, Classical Assumption Test, and Multiple Regression Test.The results of this study indicate (1) there is a positive and significant influence of Location onConsumer Loyalty (2) there is a positive and significant effect of Consumer Perception onConsumer Loyalty (3) there is a positive and significant influence on Service Quality onConsumer Loyalty.Keywords: Location, Consumer Perception, Service Quality and Consumer Loyalty.
Analisis Pengaruh Karakteristik Konsumen Dan Faktor Sosial Terhadap Keputusan Pembelian Produk Ramah Lingkungan (Studi Kasus Masyarakat Kota Metro)
Authors: Saputra Dani Septian , Fitriani Fitriani
Published: June 2023

The emergence of concern for the environment can change a person in determining which product to choose by considering the impact that will occur on the environment.Therefore, efforts are needed to find out what factors are related to purchasing decisions for environmentally friendly products. This study aims to determine the effect of consumer characteristics and social factors on purchasing decisions of environmentally friendly products in the people of Metro City.The research design is quantitative research or verification research. The method used in this research is the explanatory survey method. The objects in this study are consumer characteristics, social factors and purchasing decisions for environmentally friendly products. This research activity was conducted in Metro City. The research population is consumers in Metro City with a total sample of 96 respondents. Data collection techniques using questionnaires. The analytical tool used isdata quality analysis and multiple linear regression analysis with SPSS program. The results of the study partially show that consumer characteristics and social factors have a significant effect on purchasing decisions for environmentally friendly products. Simultaneously also shows that k consumer characteristics and social factors have a significant effect together on purchasing decisions for environmentally friendly products.Keywords: Consumer Characteristics, Social Factors, Purchase Decision
Analysis Of Product Damage Levels For Smooth Production In Mr. Eko’s Oncom Business In Raman Aji Village Lampung Timur
Authors: Ndaruwati Mega Putri , Febriyanto Febriyanto
Published: June 2023

Analysis Of Product Damage Levels For Smooth Production In Mr. Eko’s Oncom Business In Raman Aji Village Lampung Timur

This study aims to determine whether the level of product damage as a whole is still within the tolerable limit, the type of product damage and what percentage, and what factors affect product damage during 2020 at Mr Eko's Oncom Business in Raman Aji Village, East Lampung. The type of research used is quantitative research. This study uses the Statistical Quality Control (SQC) method with the tools of (1) Control Chart, (2) Pareto, (3) Fishbone. The results of this study are the overall level of product damage that occurred during 2020 at Mr Eko's Oncom Business in Raman Aji Village, East Lampung is still within tolerable limits with an average product damage value of 4.54%, UCL of 8.25%, and LCL by 0.84%. The types of product damage were color (mushrooms were not perfectly evenly distributed) with a percentage of 62%, shape and size with a percentage of 25%, and too soft texture with a percentage of 13%. The factors that affect the damage to oncom products are workers who are less thorough and less trained, raw materials that are not good in checking, equipment that is no longer standard to use and lack of maintenance, unsanitary environmental conditions and the presence of smoke resulting from combustion and oncom printing and production methods are still carried out by human labor.
Pengaruh Literasi Keuangan, Kemampuan Finansial Dan Teknologi Informasi Terhadap Minat Investasi Saham (Studi Pada Mahasiswa Fakultas Ekonomi Dan Bisnis Universitas Muhammadiyah Metro)
Authors: Ash Sidiq Muhammad Maulana , Septiana Nani
Published: June 2023

Lack of financial literacy is one of the causes of financial problems, as economics and business students should have good financial literacy, financial ability possessed by students is one of the factors that become obstacles for students to start investing and the existence of information technology that is increasingly modern today become facilities that make it easier for students to make investments. The purpose of writing this article is to determine the effect of financial literacy, financial ability and information technology on interest in stock investment. research method using a survey study tested using multiple regression analysis, partial test, stimulant test and the coefficient of determination test. The results of the study show that all dependent variables including financial literacy, financial ability and information technology have a positive and significant influence partially and simultaneously on stock investment interests of students of the Faculty of Economics and Business, University of Muhammadiyah Metro. it can be concluded that the higher the financial literacy, the financial ability of students and the more understanding of information technology, the higher the interest of students in investing in stocks.
Pengaruh Customer Online Rating Dan Review Terhadap Keputusan Pembelian Pada Pengguna Marketplace Tokopedia (Studi Kasus PadaMahasiswa Universitas Muhammadiyah Metro)
Authors: Marilyn Regiana , Lelawati Nina
Published: June 2023

The author gives the title thesis "The Influence of Online Customer Ratings and Reviews on Purchase Decisions for Tokopedia Marketplace Users, (Case Study on Muhammadiyah Metro University Students).

This research was conducted in order to determine the effect of online customer ratings and reviews on purchasing decisions on Tokopedia marketplace users at Muhammadiyah Metro University students. The type of research used is quantitative research with a population of 5,743 students. Sampling technique using Accidental Sampling. Only 98 samples used were in accordance with predetermined criteria. The data used is primary data with the distribution of questionnaires in the form of a list of questions with several alternative answers for respondents. The statistical test used to test the hypothesis was multiple linear regression analysis and was tested using the statistical packages for the social science (SPSS) version 25 program. Based on the results of statistical tests, it shows that online customer ratings and reviews have a positive or significant influence on the purchasing decisions of Tokopedia marketplace users for Muhammadiyah Metro University students. Based on the results of statistical tests, it shows that online customer ratings and reviews have a positive or significant influence on the purchasing decisions of Tokopedia marketplace users for Muhammadiyah Metro University students.
Analisis Kebijakan DPRD Kota Medan Tentang BPJS Kesehatan Perspektif Ekonomi Islam
Authors: Fauja Zalika , Marliya Marliyah
Published: June 2023

It is a must for everyone in Indonesia to have health insurance in life, one of which is to become a member of the Social Security Administering Body (BPJS). National Health Insurance (JKN) is one of the policies to support the implementation of social development programs in Indonesia. This is in accordance with the mandate of the 1945 Constitution, where the state provided social protection to achieve social justice.This study discusses how the Medan City DPRD's policy on BPJS health from an Islamic economic perspective, using descriptive qualitative methods, the research was conducted at the secretariat of the Medan City DPRD. There are several public aspirations regarding BPJS health, so there is a need for internal policies. And some policy suggestions so that BPJS in the city of Medan is in accordance with Islamic teachings to avoid gharar, maysir (gambling) and usury and the community evenly gets national health insurance.
Penerapan Metode Peramalan Penjualan Sebagai Dasar Penetapan Perencanaan Jumlah Produksi Pada Home Industri Roti Setia Bakery Di Adirejo, Lampung Timur
Authors: Suryadi Suryadi , Septiana Nani , Hasanah Avianti Nur
Published: June 2023

This study aims to determine the right forecasting method used in the home industry of Roti Setia Bakery and to determine the number of products that must be produced by the home industry of Roti Setia Bakery from June 2022 to May 2023. The type of research used is quantitative research. This study uses the semi-average method and the least square method. The results of this study are based on the MAPE level (mean absolute percentage error) of the two methods, so the sales forecasting method that is more appropriate is used in the Home Industry of Roti Setia Bakery using the semi-average method because it has smaller deviations. by 5.62% compared to using the least square method (least square method), namely MAPE of 13.33%. Planning for the amount of bread production at the Setia Bakery Home Industry Bread in the June 2022 period is 1,225.30 pcs, the July 2022 period is 1,228.13 pcs, the August 2022 period is 1,230.96 pcs, the September 2022 period is 1,233.79 pcs, the October 2022 period 1236.62 pcs, November 2022 period 1,239.45 pcs, December 2022 period 1,242.28 pcs, January 2023 period 1,245.11 pcs, February 2023 period 1,247.94 pcs, March 2023 period 1,250.77 pcs, April 2023 period is 1,253.60 pcs, May 2023 period is 1,256.43 pcs.
Pengaruh Faktor Budaya, Faktor Sosial Dan Faktor Pribadi Terhadap Keputusan Pembelian Jasa Pada PT. Telkom Kota Metro
Authors: Fuadi Selamet , Kusmawati Nanda , Novrianda Herry
Published: June 2023

In line with the rapid economic growth of Indonesia, the demand for telecommunicationsservices is also increasing, so that PT Telkom Indonesia must be able to serve the needs ofthe community by increasing the number of connection units and the quality oftelecommunication facilities. This improvement effort has been carried out by implementingPT Telkom's policies, namely, the best service, the best image and the best results. All aredirected to customer satisfaction of PT Telkom service users. This study aims to determine 1)To determine whether cultural factors influence purchasing decisions. 2) To find out whetherthere is an influence of social factors on purchasing decisions. 3) To find out whether there isan influence of personal factors on purchasing decisions. 4) To find out whether there is aninfluence of cultural factors, cultural factors, personal factors, social factors together onpurchasing decisions. The survey method was chosen as the primary data source. The surveymethod focuses on collecting data from respondents who have certain information, thus enabling researchers to solve problems. Data collection was carried out using a questionnaireor questionnaire instrument. Based on the estimated time and limitations, the population inthis study were all wifi users from Telkom Indonesia on metrp. then the population is takenbased on the largest number of buyers in a year in 2020, which is as many as 133 buyers. Theresults show that 1) there is a positive and significant influence between cultural factors onpurchasing decisions 2) there is a positive and significant influence between social factors onpurchasing decisions. 3) there is a positive and significant influence between personal factorson purchasing decisions 4) there is a positive and significant influence between personalfactors on purchasing decisions. positive and significant influence between cultural factors,personal factors, social factors on purchasing decisions.
Pengaruh Awareness Bonding Dan Identity Bonding Terhadap Kesetiaan Pelanggan Dealer Salim Jaya Motor Pekalongan Lampung Timur
Authors: Febriyanto Febriyanto , Ratmono Ratmono , Agita Agita
Published: June 2023

From the results of observations made by researchers, it was found that several things wereindicated to cause a lack of customer loyalty, so the researchers conducted a study of thisresearch to determine the purpose of partially or simultaneously the effect of awareness bondingand identity bonding on customer loyalty at the Salim Jaya Motor Dealer, Pekalongan Timur,Lampung. This type of research is quantitative with data collection using a questionnaire asmany as a sample of 96 respondents. The sampling technique used random sampling, while theanalytical tool used was multiple linear regression with partial test decision making (t) andsimultaneous test (f) and the coefficient of determination. The results of the analysis prove thatcustomer loyalty is a deep lasting customer commitment to re-subscribe or re-purchase theselected product/service consistently in the future, even though the influence of the situation andmarketing efforts have the potential to cause behavioral changes, to make it happen, customersneed bonding. So with this Awareness Bonding (X1), Identity Bonding (X2), together have aneffect on Loyalty (Y).
Pengaruh Lingkungan Kerja, Disiplin Kerja, Kompensasi, Dan Kepuasan Kerja Terhadap Kinerja Karyawan Pabrik Beras Sampoerna Di Kotagajah, Kabupaten Lampung Tengah
Authors: Fitriani Fitriani , Imantoro Jati , Fuadin Muhammad Ilham
Published: June 2023

In a company's operating system, human resources are a very valuable company asset thatmust be managed properly by the company in order to make an optimal contribution. Thegrowth of the company's organization is very dependent on the productivity of the workforcein the company. The company's goals can be achieved if the performance provided meetspredetermined standards. Every organization or company will always try to improve theperformance of its employees in the hope that the company's goals will be achieved. Thisstudy aims to determine the effect of work environment, work discipline, compensation, andjob satisfaction on the performance of Sampoerna rice factory employees in Kotagajah. Theresearch method used is quantitative research, namely questionnaires or interviews. In thisresearch , the analytical technique used is multiple linear regression analysis to determinethe dependent and independent variables with the help of a computer program , namely SPSS26. The results of the study achieved that the variables of work environment, work discipline,compensation, and job satisfaction had a positive and significant effect on employeeperformance.
Statics and kinetics of operation of extraction of target components from dry Ectocarpus with aqueous-alcoholic composition
Authors: Fomenko Ekaterina Valer'evna , Zaporozhec Ekaterina Yur'evna , Kotelnikov Andrey Vyacheslavovich , Aleksanyan Igor Yurievich , Nugmanov Albert Hamed-Harisovich
Published: June 2023

Polysaccharides are the most widely used biopolymers in the food industry, for example sodium alginate (food additive E401) taken as an anionic substance. Sodium alginate can act as a thickening agent in jelly-like materials, fillings and gravy products, and as a moisture-retaining ingredient in baked goods and other products. The unique industrial source of sodium alginate in modern conditions is sea brown algae (kelp and fucus). In the Caspian basin Ectocarpus algae can be attributed to the brown algae species rich in alginates. Dry Ectocarpus served as the object of scientific analysis. At present, the emergence of new information on the pharmacological parameters of a number of algae biocomponents has led to an increased interest in the study of technological approaches to the production of functional food substances and their biologically active substances. At the same time, algae can act as a raw material base for producing both independent materials and their derivatives in the form of food premixes leading to an increase in the quality indicators of basic materials while maintaining taste sensations or improving the structural organization, external state and increasing storage time. The purpose of this study was to identify the static patterns of the ratio of the extractant masses and the object of study and the kinetics of extraction of the target components from the dry Ectocarpus with a aqueous-alcohol composition to determine the efficiency and rational time of this operation. The type of kinetic dependences of extraction does not contradict the approved and published data in this field with certain specifics for the product under study and the conditions for this operation. This determines the rationality of the original approaches to improve the efficiency of algal raw materials extraction in the above-mentioned extractant environment.
Investigation of physico-mechanical and chemical properties of compound feeds with deodorization straps for sturgeon fish
Authors: Vasilenko Vitaliy Nikolaevich , Frolova Larisa Nikolaevna , Kochkin Ilya Yurievich , Eremin Ilya Denisovich
Published: June 2023

Breeding sturgeons in aquaculture is the only way to preserve them as a raw material for fish food products today. In this regard, not only the need for the development of commercial sturgeon breeding is obvious, but also the importance of research aimed at studying and developing optimal modes of industrial cultivation of different species of sturgeon. The aim of the work is to expand the range of compound feed for sturgeons, at the expense of unused reserves for expanding the food base, which are by-products of the oil and fat industry, in particular, deodorization cuts. Based on the study of the classical technology for obtaining feed for valuable fish species and eliminating its shortcomings, a technology has been developed for the production of pseudo-encapsulated feed with a content of more than 20% fat in it and vitamins adapted for various types of sturgeons grown in the Central Federal District of the Russian Federation. In the proposed technology for the production of feed for valuable fish species, pseudocapsulation of granules with fat absorbers with oil and fat waste, for example, deodorization cuts, is carried out in a plate granulator. On the basis of the studies performed, it was found that in order to introduce an increased fat content of deodorization cuts (more than 20%) into the composition of pseudoencapsulated compound feed, it is necessary to use fat absorbers, which can be recommended as silicon dioxide aerosil. When using silicon dioxide aerosil, it is possible to ensure the inclusion of up to 20-30% fat of deodorization cuts in the feed composition in a ratio of 1:4, without worsening the technological properties of the finished product.
Optimization of production of australian crayfish in RAS in the Altai cancer farm
Authors: Rubtsova Evgenia Olegovna , Lagutkina Lina Yurievna , Agibalov Pavel Aleksandrovich , Antropov Dmitry Aleksandrovich , Martyanov Alexander Sergeevich , Pershina Elena
Published: June 2023

Experimental work has been carried out to optimize the feeding conditions and keeping of red claw crayfish in the conditions of a recirculation aquaculture system (RAS) to increase growth during artificial cultivation and to determine design standards. The lack of functional complete feed and methodological approaches to the maintenance of red claw crayfish necessitated developing the effective methods for the practical implementation of feeding technology and minimizing the impact of side factors. The experiment involved 105 species of Cherax quadricarinatus weighing more than 10 g, which were kept in containers with an area of 1.5 m2 and a volume of 0.3 m3, equipped with shelters, with water artificial aeration, filtration and heating. Three options for compound feed formulations are proposed based on the low-calorie compound feed “Coppens Vital”, which was supplemented with vegetable and animal additives (pollock, cereals, gammarus, bloodworm, pumpkin, carrots). With a daily feeding rate making 4-6% of body weight, there was established a feeding regimen 2 times a day. The absolute and average daily growth in three experimental groups of hydrobionts, the average daily growth rate and the mass accumulation coefficient were calculated. As a result, the composition of a complete diet has been optimized, which makes it possible to increase and stabilize the percentage of leaders and the average group in terms of growth. It is noted that the uneven population growth rate requires sorting depending on the mass and planting density while maintaining the composition of the diets. The study of different stocking densities in fish tanks was carried out on the basis of measuring fish-breeding and biological indicators, which complement the general characteristic of the limiting values of RAS operation when keeping objects, which can be used as regulatory documentation for stabilizing economically important features of grown aquaculture objects. The information obtained is opportune and helps avoid technological losses in the production of aquaculture products.
Effects of complex of ß-cyclodextrin with levofloxacin on lethal qualities of Russian and Siberian sturgeon hybrid in regulated conditions
Authors: Poddubnaya Irina Vasilievna , Rudneva Oksana Nikolaevna , Gurkina Oksana Aleksandrovna
Published: June 2023

When producing aquaculture products in conditions of increased planting densities of aquatic organisms, it is not always possible to avoid various diseases and injuries. The use of therapeutic baths and feeds often does not al-low to achieve a positive effect. Therefore, the use of cyclodextrin nanosponge with therapeutic and prophylactic agents included in their cavity will allow a targeted effect on the bioavailability of substances and the formation of productive indicators of hydrobionts already since early postnatal ontogenesis. All this will contribute to the improvement of industrial technology for growing table and valuable fish species, characterized by higher survival and productivity. The antibiotic levofloxacin, a broad-spectrum antimicrobial bactericidal agent of the fluoroquinolone group, was chosen as a therapeutic EDN agent. There is presented information on the effect of the complex of β-cyclodextrin with levofloxacin on the lethal qualities of a Russian and Siberian sturgeon hybrid of different live weight. The influence of this complex on the pre-slaughter mass, the mass of individual internal organs, the fatness coefficient, the indices of the internal organs of hybrid individuals was studied according to two stages of the experiment performed in the laboratory “Progressive Biotechnologies in Aquaculture” of Vavilov University. The results of the control slaughter demonstrate the highest values for the indicators in individuals of the 2nd experimental group treated with the main diet at the first stage of the complex chitosan-β-cyclodextrin in various dosages of levofloxacin. Its results exceeded the control in the muscle mass, fatness coefficient, muscle tissue index, respectively. Thus, there was no negative effect of the β-cyclodextrin complex with an antibiotic on the functional state of internal organs and tissues of fish. The results obtained expand the information about the cultivation of sturgeon fish in industrial conditions using cyclodextrin nanosponge.
Morphofunctional features of organs of Volga lamprey
Authors: Grushko Maria Pavlovna , Tulepbergenova Adelina Raphaelevna , Nikitin Eduard Vladimirovich
Published: June 2023

With habitats shrinking (e.g. due to construction projects that prevent access to areas upper the Volgograd Reservoir), changes in the environment, or illegal fishing in some areas, there is registered a sharp decrease of the population of Volga lamprey. Studying the histomorphological structure of this species has a significant impact on the prediction of changes in the population and on the assessment of the state of their internal organization. Problems in such sections as comparative embryology and histology of Volga lamprey have been poorly studied, which complicates the research. The aim of the research is to study the morphofunctional features of the organs of Caspian lamprey. The object of the study is Caspian (Volga) lamprey (Caspiomyzon wagneri), which is endemic to the Caspian Sea basin. The organs and tissues of lamprey were treated for the study in accordance with the methods generally accepted in histology. Microscopy of fixed, stained preparations was performed using a light microscope with immersion. Lampreys differ from other fish. The structure of the gill apparatus, the skin structural features, the structure of the digestive system organs, the structural features of the organs of the excretory and reproductive systems have been considered. The most intense pathological processes were characteristic of the gills, as the organ actively contacts with the environment. The studied species showed signs of epithelial hyperplasia, vascular disorders, and a change in the shape of lamellae.