bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Uang Saku, Pembelajaran Akuntansi Keuangan dan Pengalaman Kerja Terhadap Perilaku Keuangan dengan Literasi Keuangan sebagai Variabel Intervening
Authors: Tyas Eka Febi Wahyuning , Listiadi Agung
Published: June 2021

The financial behavior of each person is different as shown by the qualities of each individual. The study was directed to determine the results of the analysis of financial literacy to mediate the effect of pocket money, financial accounting learning, and work experience on financial behavior. Research location at the Universitas Negeri Surabaya with a research population of accounting education students at the Universitas Negeri Surabaya. Tests were carried out using purposive sampling technique and the sample size was determined using the Maholtra formula to obtain a total sample size of 120 respondents. The data collection methods were questionnaires and tests. With the Structural Equation Model data analysis technique using Warppls. So from the research results it can be seen whether there is no direct influence between pocket money on financial behavior. On the other hand, work experience and financial accounting learning variables have a positive and significant direct effect on financial behavior. Has a positive and significant influence between pocket money on financial literacy. Financial accounting learning variables and work experience have no effect on financial literacy. Financial literacy variables do not affect financial behavior and cannot mediate the effect of pocket money, financial accounting learning, and work experience on financial behavior.
Peran Kemandirian Belajar dalam Memediasi Pengaruh Motivasi Berprestasi terhadap Prestasi Belajar Mahasiswa Selama Pembelajaran Daring
Authors: Matsani Nurul , Rafsanjani M. Arief
Published: June 2021

This study aims to analyze and examine the role of independent learning in mediating the effect of achievement motivation on student achievement during online learning. Respondents of this study were 158 active students of the Department of Economic Education, UNESA, batch 2018. Data collection techniques were through questionnaires and documentation, then the data were analyzed using the SEM (Structural Equation Modeling) test. The results of this study indicate that achievement motivation has a direct and significant effect on learning achievement. Achievement motivation has a direct and significant effect on learning independence. Learning independence has no direct and insignificant effect on learning achievement. and achievement motivation has an indirect effect on learning achievement through independent learning with a total value of 20%.
Studi Komparasi Metode Pembelajaran Kooperatif STAD dan Ekspositori dalam Meningkatkan Learning Outcome pada Computer for Communication
Authors: Waris Abdul , Rochman Fatkhur
Published: June 2021

The problem often experienced in learning computer for communication to achieve maximum learning outcomes is the accuracy in presenting the materials, so the method used matches the characteristics of the learning material. In this case, the selection of teaching methods must be adjusted to the current situation and condition to obtain innovative and effective method because the students’ ability is heterogeneous. This study aims to determine students’ learning outcomes using cooperative learning STAD, to determine students’ learning outcomes using expository, as well as to find out the difference students’ learning outcomes between cooperative learning STAD and expository methods. Therefore, this study was designed using quasy-experimental with pre-test and post-test non-equivalent control group design. The population was students of D3 Business Administration Program of Politeknik Negeri Malang consisting of two groups, control and experimental class as a sample. Quantitative statistical analysis was used as a tool in this study. Through t-test, it is found the results of obtained t-count is 3.803 and higher than t table = 1.99. It means that there was a significant difference between the learning outcome of the control and the experimental group on computer for communication subject.
Perang Dagang Amerika Serikat dan Tiongkok: Bagaimana Dampaknya Bagi Perekonomian Indonesia Tahun 2017 - 2020?
Authors: Sitorus Destri Sambara
Published: June 2021

The trade war that began with the foreign policy of the President of the United States, Donald Trump, who imposed tariffs on goods from China, triggered China to retaliate against this policy with various other forms of protection. This has an impact on global economic growth, especially for countries that have a lot of cooperation with the two countries, including Indonesia. As for countries like Indonesia, which depend a lot on economic cooperation with the two countries, especially in the export and import sectors, it is certainly affected by their economic growth. This research is a descriptive qualitative study that aims to explain how the impact of the trade war between the United States and China on the Indonesian economy in 2017 - 2020 using foreign policy theory and the concept of protectionism. The results of the study show that the trade war between the United States and China has had a significant impact on the Indonesian economy, especially in the export sector and stock investment.
PENGEMBANGAN INSTRUMEN KEMAMPUAN KERJASAMA ANAK KELOMPOK B
Authors: Hadaina Nia , Widiana I Wayan , Astawan I Gede
Published: June 2021

Perkembangan anak usia dini dalam sebuah proses pembelajaran sangatlah penting. Dalam sebuah perkembangan anak dapat diperhatikan melalui kemampuan kerjasama anak, Penelitan yang bertujuan untuk menghasilkan suatu alat penilaian kemampuan kerjasama yang valid dan reliabel. Dengan penelitian ini, dalam pengembangan yang dilakukan menggunakan model R&D dikembangkan oleh Borg and Gall yang melalui tahap research,and development. Pada p enelitian pengembangan ini hanya sampai pada tahap pengembangan (develop). Instrumen yang digunakan untu penilaian kerjasama ini iyalah angket sedangkan. Untuk cara dalam mengumpulkan sebuah data dapat digunakan dengan cara. Metode Tanya jawab (wawancara), meted pengamatan, dan pertanyaan tertulis. Data yag didapatkan akan dianalisis validitas dan reliabilitas masing-masing instrumen. Dari hasil analisis validitas intrumen penilaian kerjasama hasil nilai rata-rata 1, yang dapat diartikan instrumen penilaian ini memilki validitas yang sangatlah tinggi. Sedangkan hasil analisis reliabilitas intrumen penilaian kerjasama 0,90, dengan artian instrumen ini memiliki tingkat reliabilitas yang tinggi. Diperoleh hasil yang diambil kesimpulannya bahwa alat yang digunakan untuk penilaian keterampilan kolaboratif layak dikembangkan dan dapat digunakan untuk mengevaluasi siswa
PENGEMBANGAN MEDIA PEMBELAJARAN MATEMATIKA PADA POKOK BAHASAN PECAHAN DENGAN PENDEKATAN KONTEKSTUAL DI KELAS IV SD NEGERI 1 BLAHKIUH KECAMATAN ABIANSEMAL
Authors: Widyaputri Putu Nia Sri , Agustika Gusti Ngurah Sastra
Published: June 2021

Penelitian ini bertujuan untuk (1) untuk mengetahui rancang bangun media pembelajaran video animasi pada pokok bahasan pecahan dengan pendekatan kontekstual dan (2) untuk mengkaji kualitas media pembelajaran video animasi pada pokok bahasan pecahan dengan pendekatan kontekstual menurut para ahli dan uji coba produk. Pengumpulan data menggunakan metode observasi, wawancara, dan kuesioner. Hasil penelitian: (1) Rancang bangun media video animasi menggunakan model ASSURE. (2) Media video animasi dinyatakan valid dengan: (a) hasil review ahli materi pembelajaran menunjukan media video animasi sangat baik dengan persentase (91,67%), (b) hasil review ahli desain pembelajaran menunjukkan media sangat baik dengan persentase (95,00%), (c) hasil review ahli media menunjukkan media sangat baik dengan persentase (90,00%), (d) hasil uji perorangan menunjukkan media sangat baik dengan persentase (93,17%). Dengan demikian, media video animasi layak digunakan sebagai media pembelajaran.
Pengembangan Instrumen Penilaian Kemampuan Membaca Permulaan Pada Anak Kelompok B Taman Kanak-Kanak
Authors: Pratiwi Kadek Wiwin , Gading I Ketut , Antara Putu Aditya
Published: June 2021

Kemampuan membaca permulaan sangat penting bagi anak, sebab kemampuan tersebut menjadi kemampuan dasar anak untuk membaca dijenjang yang lebih tinggi. Salah satu faktor yang mempengaruhi efektivitas stimulasi kemampuan membaca permulaan adalah penggunaan alat evaluasi atau instrumen yang berkualitas baik dan teruji validitasnya dalam pembelajaran. Kenyataan di lapangan menunjukkan bahwa kualitas instrumen penilaian kemampuan membaca permulaan yang digunakan guru dalam pembelajaran masih rendah. Penelitian ini bertujuan untuk merancang dan menghasilkan instrumen kemampuan membaca permulaan anak kelompok B yang teruji validitasnya. Penelitian ini merupakan penelitian pengembangan dengan menggunakan model pengembangan RDR (Research, Development, Research. Tahapan model RDR terdiri dari 3 tahap yaitu research (studi pendahuluan), development (pengembangan), dan research (uji efektivitas produk). Subjek dalam penelitian ini adalah instrumen penilaian kemampuan membaca permulaan pada anak kelompok B Taman Kanak-kanak. Untuk menguji validitas instrumen penilaian kemampuan membaca permulaan dilibatkan dua pakar sebagai responden. Hasil penilaian kedua pakar dinalaisis dengan model tabulasi silang yang dikembangkan oleh Gregory.  Hasil analisis validitas instrumen penilaian kemampuan membaca permulaan anak diperoleh sebesar 0,88 dan berada pada kriteria validitas sangat tinggi. Berdasarkan hasil analisis menunjukkan instrumen penilaian kemampuan membaca permulaan pada anak kelompok B Taman Kanak-kanak memiliki validitas yang sangat tinggi. Berdasarkan hasil tersebut maka instrumen kemampuan membaca permulaan pada anak kelompok B layak untuk digunakan.
Perbandingan Efektivitas Model Pembelajaran Problem Based Learning Dengan Model Problem Solving Terhadap Kemampuan Berpikir Kritis Pada Pembelajaran PPKn
Authors: Kiranadewi Dhea Fatar , Hardini Agustina Tyas Asri
Published: June 2021

Berdasarkan hasil pengamatan ditemukan permasalahan kemampuan berpikir kritis siswa yang rendah pada pelaksanaan pembelajaran PPKn, sehingga diperlukan model pembelajaran yang mampu melatih kemampuan berpikir kritis siswa. Tujuan penelitian ini untuk menganalisis ada tidaknya perbedaan tingkat efektivitas antara model problem-based learning dan Problem Solving dalam meningkatkan kemampuan berpikir kritis belajar PPKn siswa di kelas IV SD. Jenis penelitian eksperimen semu (quasi experiment design) yang menggunakan teknik analisis deskriptif. Desain penelitian pola nonequivalent control group design, uji hipotesis penelitian ini menggunakan uji T independent Sample T test. Subyek penelitian yaitu kelas IV dengan jumlah siswa 58 yang meliputi 28 siswa kelas IV SD. Metode pengumpulan data yang digunakan adalah pemberian tes kepada siswa. Dari hasil nilai postest teknik analisis data yang digunakan adalah teknik analisis data statistik kuantitatif. Hasil penelitian ini menunjukkan pengujian hipotesis dengan uji T sig. (2-tailed) diperoleh 0,000 yang artinya lebih kecil dari 0,05 (0,000<0,05) dengan thitung  5,902> ttabel 2,002, dan nilai rata-rata penggunaan model problem based learning yaitu 80,00 yang mengalami peningkatan sedang dengan nilai N-Gain 0,48, sedangkan nilai rata-rata lebih rendah dari model Problem solving yaitu 69,50 dengan nilai N-Gain 0,23. Simpulan penelitian ini adalah model problem based learning terbukti lebih efektif dalam peningkatan kemampuan berpikir kritis PPKn pada siswa dibandingkan menggunakan model Problem Solving. Adapun implikasi dalam penelitian ini yaitu melatih siswa dalam meningkatkan kemampuan berfikir kreatif, imajinatif, refleksi, tentang model dan teori, dan mengenalkan dan mencoba gagasan baru, serta mendorong siswa untuk memperoleh kepercayaan diri.
Hubungan Motivasi Belajar Ekstrinsik dengan Kompetensi Belajar Kognitif Selama Pembelajaran Daring Biologi Peserta Didik Kelas X SMAN 7 Solok Selatan
Authors: Mursi Ila , Ristiono Ristiono
Published: June 2021

This research was motivated by the problem of the low cognitive competence of students in learning Biology at SMAN 7 Solok Selatan. The purpose of this study was to determine whether there is a relationship between extrinsic learning motivation and cognitive learning competencies of students in Biology subjects at SMAN 7 Solok Selatan. This research is a descriptive correlation study, the data collection technique used by the writer is to use a questionnaire given to students, with this questionnaire the writer obtains data about extrinsic learning motivation with cognitive learning competencies of students in Biology subjects during online learning at SMAN. 7 South Solok. After the data is obtained the writer uses the value criteria formula and normality test and performs hypothesis testing using the product moment and using the coefficient of determination formula to determine the contribution of variables X and Y. The research subjects are 48 students of class X, which was carried out in March sd April 2021. After the research was carried out, the authors obtained the results of the study that there was a positive and significant relationship between extrinsic learning motivation and cognitive learning competencies of students in the Biology subject at SMAN 7 Solok Selatan, namely (0.65). The contribution of extrinsic learning motivation to students' cognitive learning competencies in Biology is (12.13%) and (87.87%) determined by other factors.
Pengembangan Instrumen Asesmen Berbasis Literasi Sains Tentang Materi Keanekaragaman Hayati Kelas X
Authors: Alti Rizka Putri , Lufri Lufri , Helendra Helendra , Yogica Relsas
Published: June 2021

Hasil penelusuran data penelitian PISA menunjukkan bahwa posisi literasi sains siswa Indonesia masih berada di peringkat 10 terakhir dibandingkan negara lainnya. Hal tersebut menunjukkan kurangnya keterampilan peserta didik Indonesia menyelesaikan soal PISA. Penelitian ini bertujuan untuk menghasilkan menghasilkan instrumen asesmen berbasis literasi sains untuk materi keanekaragaman hayati kelas X yang valid, praktis, mempunyai tingkat kesukaran yang bervariasi, daya pembeda yang baik, dan reliabel. Jenis penelitian ini yaitu penelitian pengembangan (Research and Development) dengan model pengembangan 4-D. Subjek penelitian terdiri dari 36 orang peserta didik kelas X SMAN 3 Pariaman dan validator terdiri dari 3 orang dosen FMIPA UNP dan 1 orang guru SMAN 3 Pariaman. Penelitian ini menghasilkan instrumen asesmen berbasis literasi sains yang sangat valid secara logis (90,54%) dan valid secara empiris dengan korelasi rendah hingga tinggi (0,33-0,75) untuk soal pilihan ganda, cukup hingga tinggi (0,42-0,80) untuk uraian, majemuk dan sikap, sangat praktis digunakan oleh guru (93,88%) dan oleh peserta didik (92,31%), reliabilitas tinggi (0,69) untuk soal pilihan ganda dan reliabilitas sangat tinggi (0,86) untuk soal uraian, majemuk dan sikap, serta daya pembeda dan tingkat kesukaran yang bervariasi.
Analisis Kebutuhan Pengembangan Booklet Sistem Imun Manusia sebagai Suplemen Bahan Ajar Biologi Kelas XI SMA
Authors: Yudistira Olla Krisliani , Syamsurizal Syamsurizal , Helendra Helendra , Attifah Yusni
Published: June 2021

Media pembelajaran merupakan kemajuan besar dalam bidang pendidikan, melalui media mempermudah guru dan peserta didik dalam memahami konsep pelajaran. Objek yang tidak dapat diamati secara langsung karena keterbatasan waktu, biaya, dan lain sebagainya menggunakan media pembelajaran kita dapat melihat dan mempelajari objek tersebut. Pemilihan bahan ajar yang sesuai dengan kebutuhan peserta didik bukanlah hal yang mudah, guru harus mengetahui bagaimana karakteristik peserta didik untuk dapat menyesuaikan bahan ajar yang digunakan. Penelitian ini bertujuan untuk menganalisis kebutuhan pengembangan booklet sistem imun manusia sebagai suplemen bahan ajar biologi kelas XI di SMAN 4 Padang. Studi dilakukan dengan metode survei menggunakan angket yang disebarkan kepada peserta didik dan guru biologi di SMAN 4 Padang. Angket diisi oleh 159 peserta didik kelas XII IPA dan satu orang guru biologi SMAN 4 Padang. Hasil angket menunjukkan bahwa peserta didik membutuhkan sumber belajar tambahan pada materi sistem imun manusia, kriteria sumber belajar yang dibutuhkan oleh peserta didik yaitu materi yang disampaikan lengkap, singkat, padat dan disertai gambar. Pengembangan booklet sebagai suplemen bahan ajar biologi dapat menjadi solusi dari permasalahan yang dihadapi oleh guru dan peserta didik khusunya pada materi sistem imun manusia.
Air Quality Studies at Ukrainian Airports
Authors: Synylo Kateryna , Ulianova Kateryna , Zaporozhets Oleksandr
Published: June 2021

Sustainability of aviation must be provided to limit the harmful influence and protect public health and the environment. As a rule, national and international regulations aim to reduce ambient air pollution from the aviation sector. Ukraine and other countries have historically adopted international regulations concerning air quality to protect public health and the natural environment. Local regulations also regulate it. However, these documents cover mainly stationary emission sources. In contrast, mobile sources, especially aircraft, are not considered, although, unlike most transportation modes, aircraft travel great distances at various altitudes, generating emissions that potentially impact air quality. This paper was aimed to study the principles and methods to monitor air pollution from aircraft engines at main airports of Europe, north America, and Asia. Based on measurement campaign analysis at some airports of the world and modelling results by complex model PolEmiCa (Pollution and Emission Calculation), the method and technical characteristics for measurement system detect the aircraft engine emissions. The developed practical recommendations were realised at Ukrainian airports and used for validation of model PolEmiCa. Thus, the modelling results for each engine are in good agreement with the results of measurements by the AC32M Nitrogen Oxides (NOX) analyser system due to considering the jet and plume-regime during an experimental investigation at Boryspol airport. Analysis of measured instantaneous concentration demonstrates a high correlation with the runway movements and take-off at Zhulyany airport.
Developing an Approach for Fault Detection and Diagnosis of Angular Velocity Sensors
Authors: Nguyen Dinh-dung , Tran Hong Son , Tran Thi Thuy , Quoc Dat Dang , Nguyen Hong Tien
Published: June 2021

Angular velocity sensor detection and diagnosis become increasingly essential for the improvement of reliability, safety, and efficiency of the control system on aircraft. The classical methods for fault detection and diagnosis are limit or trend checking of some measurable output variables. Due to they do not give a deeper insight and usually do not allow a fault diagnosis, model-based methods of fault detection and diagnosis were developed by using input and output signals and applying dynamic process models. These approaches are based on parameter estimation, parity equations, or state observers. This paper presents an improvement method to build algorithm fault diagnosis for angular velocity sensors on aircraft. Based on proposed method, results of paper can be used in designed intelligent systems that can automatically fault detection on aircraft.
A Study on Aerodynamic Behavior of Subsonic UAVs' Wing Sections with Flaps
Authors: Akdeniz Halil Yalcin
Published: June 2021

In this study, it is aimed to assess the aerodynamic and flight effects of the flap design on an airfoil. For this purpose, NACA 4415 type wing profile, which can also be used in unmanned aerial vehicles (UAVs), is selected. The original design and the +5-degree flapped design which has constant other design features are compared. Assessments are performed under constant Reynolds numbers and an angle of attack between 0-10 degrees with a 1-degree interval. Analyses are made using the open-source software XFLR5. For the flapped design is named NACA 4415-2, some basic aerodynamic performance parameters such as coefficient of drag (CD), coefficient of lift (CL) coefficient of pressure (Cp) maximum lift coefficient (Clmax) and minimum stall velocity (Vstall) have been observed. According to results, when the flap with 5o is added to the airfoil, it has been observed that the CL and Lift force of the original design of the airfoil increase significantly, CD of the airfoil increase partially, and the pressure coefficient tends to decrease significantly. Furthermore, it has been observed that while the minimum stall velocity has decreased, Clmax values increased.
Overview of Studies on the Cognitive Workload of the Air Traffic Controller
Authors: Yazgan Ebru , Sert Erdi , Şimşek Deniz
Published: June 2021

Air Traffic Control Officer (ATCO) will be the branch that will have the most impact in the air transport system. The duty of ATCOs is to prevent the collision of airplanes in the air provided by the controllers on the ground and to overcome the possible confusion. Being exposed to a very high cognitive workload of ATCOs, which is one of the high-risk occupational groups, is important in terms of flight safety. However, it has been observed that studies on the differences in cognitive workload that may occur between experienced and inexperienced ATCO under different task difficulties are quite insufficient in literature. This study presents research studies on cognitive workload measurement methods and ATCO's cognitive workload. In this study, first of all, the importance of determining the cognitive workload and its measurement methods are explained. In addition, literature studies related to cognitive workload of ATCOs, particularly by using eye tracker are presented.
Problems of Providing Travel Services to Inclusive Aviation Tourists:
World and Ukrainian experience
Authors: Belousova Natalyya , Lyubitseva Olha , Skorostetska Olha , Boiko Olena
Published: June 2021

The article examines the features of the development of the modern world tourism market and the problems of providing tourism services to inclusive aviation tourists. The world experience of air transportation of inclusive tourists in different countries is analysed. Analytical material is offered, reflecting the problems of airlines work in transporting tourists from inclusive groups. The prospects of the infrastructure of Ukrainian airports are assessed; problems associated with air services for people with different categories of inclusion, especially people with disabilities, are identified. The emphasis is on developing tourism in Ukraine as a segment of the Ukrainian economy within the framework of studying the issue of development and implementation of inclusive tourism in Ukraine. In this regard, the legal regulation of relations between representatives of air transportation and an inclusive tourist, who requires special conditions of movement, which is usually associated with physical health (people with heavyweight, older adults, pregnant women) or disability, are relevant. The research identified the problems and suggested solutions that relate to tourist services in developing a consistent, logical and compromise approach to providing comfortable services for air travel for people with disabilities and passengers of other inclusive categories.
Modelo de ecuaciones estructurales, alternativa para medir el fenómeno de las mujeres STEM en México
Authors: Hernández Herrera Claudia Alejandra
Published: June 2021

Aunque cada vez hay más mujeres en las universidades en las áreas de ciencia, tecnología, ingeniería y matemáticas (STEM), en términos de representatividad aún están lejos de igualar a los hombres. Los estereotipos de género y la segregación de las carreras STEM son obstáculos para las estudiantes, ya que generan prácticas excluyentes y ambientes hostiles. El objetivo de este artículo fue proponer un modelo de medición del fenómeno de las mujeres STEM que considerara variables latentes relacionadas con las creencias masculinas, las inspiraciones, las estrategias de afrontamiento, el mercado laboral, la escuela y el gusto por las matemáticas. Para ello, se construyó un instrumento que mide la percepción de las mujeres STEM en universitarios. Se aplicaron 1826 cuestionarios a estudiantes de dos escuelas de educación superior del Instituto Politécnico Nacional. Se realizó el análisis factorial exploratorio y confirmatorio, posteriormente se trabajó el modelo de ecuaciones estructurales y por último se establecieron seis hipótesis generadas de las variables latentes. Se encontró que el afrontamiento contribuye a explicar la variable Escuela, además de que las creencias masculinas explican los constructos Escuela y Mercado Laboral. Se concluye que es necesario que las escuelas trabajen para desarrollar ambientes respetuosos y desafiantes para las mujeres, aunado a que el sector laboral tiene que apoyar para cerrar las brechas y eliminar la discriminación por género.
Mathematical model of rheological behavior of silica suspension in hydroxypropyl methyl cellulose solution
Authors:   Lviv Polytechnic National University 12 S. Bandery str., 79013 Lviv, Ukraine, Olijnyk Liliana , Starchevski Volodymyr ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine, Kyslenko Volodymyr ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine
Published: June 2021

A mathematical model of rheological behavior of silica suspension in hydroxypropyl methyl cellulose solution was investigated. The model takes into account the friction between particle aggregates, particle aggregates and macromolecules in solution and between macromolecules in solution as well as the formation of well ordered layers contained solid particles, adsorbed macromolecules and macromolecules in the holes between particles in aggregates at the large shear rates. Suggested model allows to describe the rheological behavior of silica suspensions in water solution of hydroxypropyl methyl cellulose.
The studies of complex formation of metal borides in the reaction system of epoxidation of 1-octene with tert-butyl hydroperoxide by IR spectroscopy
Authors:   Lviv Polytechnic National University 12 S. Bandery str., 79013 Lviv, Ukraine, Makota Oksana , Trach Yuriy ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine
Published: June 2021

The complex formation of molybdenum and vanadium borides in the reaction system of 1-octene epoxidation with tert-butyl hydroperoxide by infrared spectroscopic analysis was studied. It was shown that 1-octene formed complex with metal moiety in a case of molybdenum boride and with boron moiety in a case of vanadium boride.
Synthesis, polymerization ability, nonlinear optical properties of methacrylic monomers and polymers with benzylidene moiety
Authors:   Kyiv Taras Shevchenko National University, Volodymyrska 60, 01033 Kiev, Ukraine, Smokal Vitaliy , Krupka Oksana ,   Laboratory POMA, UMR CNRS 6136, University of Angers, 2 Boulevard Lavoisier, 49045 Angers, France, Kolendo Aleksey ,   Kyiv Taras Shevchenko National University, Volodymyrska 60, 01033 Kiev, Ukraine, Derkowska Beata ,   Institute of Physics, N. Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland, Czaplicki Robert ,   Laboratory POMA, UMR CNRS 6136, University of Angers, 2 Boulevard Lavoisier, 49045 Angers, France, Sahraoui Bouchta ,   Laboratory POMA, UMR CNRS 6136, University of Angers, 2 Boulevard Lavoisier, 49045 Angers, France
Published: June 2021

New methacrylic monomers, their polymers with benzylidene fragment were synthesized. Structures of all compounds were determined by HNMR, UV- spectroscopies. The third order nonlinear optical properties of oxazolone, thiazolidinone and thiohydantoin containing compounds were investigated in solutions using degenerate four wave mixing (DFWM) method at 532 nm.
Peroxide chitosan derivatives and their application
Authors:   Lviv Polytechnic National University 12 S. Bandery str., 79013 Lviv, Ukraine, Solomko Nadiya , Budishevska Olga ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine, Voronov Stanislav ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine
Published: June 2021

Via radical reactions of chitosan and 5-tert-butylperoxy-5-methyl-1-hexen-3-in peroxychitosanes with ditertiary peroxide fragments were synthesized. They can be used as macroinitiator and coemulsifiers for emulsion polymerization of vinyl monomers. Latex polymers obtained antibacterial properties. Polymeranalogical interaction of chitosan with tert-butylperоxymethyl ester of butendicarbon acid yields in peroxychitosanes with controlled quantity of primary-tertiary peroxide fragments. New pH-sensitive smart hydrogels with antibacterial properties were created on their basis.
Polyesters on the basis of petroleum resin and polyethylene glycols
Authors:   Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5310, USA, Brostow Witold , Bratychak Michael ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine, Pietkiewicz Dorota ,   Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5310, USA, Topilnytsky Petro ,   Lviv Polytechnic National University 12, S. Bandery St., 79013 Lviv, Ukraine
Published: June 2021

New polyesters have been obtained on the basis of C9 petroleum resin with carboxyl groups and polyethylene glycols. The average molecular mass of the petroleum resin is 1050, its functionality = 1.74. Optimal for the polyesters synthesis is the equimolar ratio between the initial compounds. The reaction is performed in the melt in the presence of p-toluenosulphuric acid as the catalyst. In the optimal temperature range 150 - 190oC the yield of the process ranges from 91 to 94 % depending on the conditions. The rate of the polyester formation reaction practically does not depend on the length of the acids or the alcohol chain molecules. The functionality is the decisive factor. We report the degrees of polycondensation of the new polyesters.
Kinetics of macroradicals propagation and decay in polymeric matrix of 1,6-hexanediol diacrylate
Authors:   Department of Physical Chemistry of Combustible Minerals L.M. Lytvynenko Institute of Physico-Organic Chemistry and Coal Chemistry NAS of Ukraine 3а Naukova str., Lviv, 79053, Ukraine, Medvedevskikh Yuriy , Khovanets’ Galyna ,   Department of Physical Chemistry of Combustible Minerals L.M. Lytvynenko Institute of Physico-Organic Chemistry and Coal Chemistry NAS of Ukraine 3а Naukova str., Lviv, 79053, Ukraine, Kytsya Andriy ,   Department of Physical Chemistry of Combustible Minerals L.M. Lytvynenko Institute of Physico-Organic Chemistry and Coal Chemistry NAS of Ukraine 3а Naukova str., Lviv, 79053, Ukraine, Yevchuk Iryna ,   Department of Physical Chemistry of Combustible Minerals L.M. Lytvynenko Institute of Physico-Organic Chemistry and Coal Chemistry NAS of Ukraine 3а Naukova str., Lviv, 79053, Ukraine
Published: June 2021

Dependence of acrylate macroradicals concentration in polymeric matrix of 1,6-hexanediol diacrylate on time within temperature range of 45-80С has been investigated by means of ESR-spectroscopy. It has been established that experimental data do not linearize in coordinates of equation of the second order reaction, what coordinates with bimolecular mechanism of macroradicals decay. It has been suggested, that the effect of decreasing of the rate constant of bimolecular macroradicals decay in time is related with their propagation in chain propagation reaction. Kinetic equation obtained on this basis satisfactorily describes experimental data, what allowed to estimate quantitatively such parameters as the rate constants of chain propagation an termination in polymeric matrix, diffusion coefficient of macroradicals and characteristic time of segmental movement.
Studies on sedimentation of asphaltene deposits in distillation residues
Authors:   Warsaw University of Technology   Faculty of Civil Engineering, Mechanics and Petrochemistry, Institute of Chemistry   Lukasiewicza 17, 09-400 Plock, Poland, Lorek Aneta , Paczuski Maciej ,   Warsaw University of Technology   Faculty of Civil Engineering, Mechanics and Petrochemistry, Institute of Chemistry   Lukasiewicza 17, 09-400 Plock, Poland
Published: June 2021

In this work, experimental methods used for the evaluation of stability of solids in liquids dispersions, are presented. For the characterization of dispersion components, modern analytical techniques, such as tensiometry, scanning and static turbidimetry, have been applied. The influence of selected surface active substances on the dispersion stability was demonstrated.
A mechanism of Portland cement hardening in the presence of finely grained glass powder
Authors:   Department of Engineering, Mechanics and Petrochemistry, Warsaw Polytecnika, 17, Lukashevicha, 09-400 Plock, Poland, Shevchenko Victor , Swierad Wojciech ,   Department of Engineering, Mechanics and Petrochemistry, Warsaw Polytecnika, 17, Lukashevicha, 09-400 Plock, Poland
Published: June 2021

The glass wastes as a cullet are widely used for the production of building materials mainly as inert aggregate. However finely grained glass powder has the very developed surface, so can not be passive toward cement solutions, what was confirmed in practice. In literature data there is no information about chemical influence of finely grained glass on the process of hardening, especially in an early pre-induction hydration period, which substantially causes the structure formation of cement stone and its properties.
Comparison of Article Processing Fees on Open Access Journals with a 4.5-Year History of Publishing
Authors: Robles Cantero Daniel , Schoenbaum Todd , Zhehulovych Zinaida , Nagorniak Ivan , Fesenko Ievgen
Published: June 2021

Open access article (synonym: open access publication) is a type of peer-reviewed article which gives a possibility to the readers to read and download it free of charge owing to paying an open access publication fee (OAPF) directly by its authors, their institutions, or funders.1 According to Solomon and Björk`s study, who analyzed about 1,370 journals, article processing charges range from 8 to 3,900 US Dollars.1, 2
Moreover, the official Elsevier`s page dedicated to the list of all company`s open access journals indicated that an article processing charge can reach 6,000 US Dollars excluding tax.3 First publishing houses that supported and develop open access journals have been two new academic publishers – BioMed Central (BMC) and Public Library of Science (PLoS).1 In 2000, they began establishing journals that rely on
open access publication fee.1 Most motivation criteria for the authors from the fields of
oral and maxillofacial surgery, periodontics in choosing to what peer-reviewed journal
submit their paper may be classified under three chief groups: 1) indexing and abstracting in different recognized data bases (PubMed/Medline,4 Scopus, Web of Science, etc.), 2) an impact metric,5 and 3) an amount of the article processing charge. First two motivation criteria are precisely described in recent publications but the last one – open access publication fee and its amount – should be investigated more
scrupulously.4, 5 There is a great need to analyze the advantages and disadvantages of OAPF both for authors and editorial staff/publishers. This is the aim of this study in order to understand the advantages and disadvantages the payment methods. For the purpose of comparative analysis we selected two peer-reviewed journals according to the following inclusion criteria:
1. Fully open access publication (hybrid or delayed open access journals were excluded during selection).
2. Similar term of publication history – about 5 years (similar starting point allows comparing the peer-reviewed journals more precisely).
3. Journals focused on oral surgery.
4. Different ways of receiving article processing
charges after the submission of manuscripts.
5. English, as language of publications.
Analysis was performed on the publishing statistics, abstracting and indexation of the journals as important characteristics of the ways of growth of both peer-reviewed publications.
YÖNETİM GURULARI VE YÖNETİMDE MODA YAKLAŞIMLAR ÜZERİNE BİR DEĞERLENDİRME
Authors: ŞENGÖZ Murat
Published: June 2021

Akademik alanda yönetim gurusu ve yönetim modaları olguları ilgi görmeye devam etmektedir. Ne var ki, bu alanda yapılan araştırmalar halen dağınık bir durumdadır. Bu nedenle yönetim gurusu ve yönetimde moda fenomenleri için açıklayıcı ve toparlayıcı akademik çalışmaların yapılmasına ihtiyaç bulunmaktadır. Yönetim guruları ve yönetimde moda fenomenlerini kavramlaştırmak üzere şu ana kadar yapılan çalışmalar iki ana grupta toparlanabilir. Bu çalışmada yönetimde moda yaklaşımlar ve yönetim guruları ile ilgili tartışmalar, mantıksal ve kurumsal yaklaşım paradigmaları çerçevesinde kategorik olarak ele alınacaktır. Çalışmanın sonuç ve tartışma bölümünde, doküman analizi sonucunda elde edilen bilgiler birleştirilerek bütüncül bir analiz yapılacaktır.
Amerikan Hegemonyasının Türkiye'de Modernleşme Ve Kalkınma Söylemlerine Yansımaları: 1945-1960
Authors: KILIÇ AKOĞLAN Nermin , RUBEN Ester
Published: June 2021

İkinci Dünya Savaşı sonrasında batı kapitalizminin en güçlü ekonomisine sahip ülkesi olan ABD liderliğinde uluslararası ekonomi yeniden düzenlenmiştir. Sahip olduğu ekonomik güçle birlikte ABD, savaştan zarar görmüş olan Avrupa ekonomilerine maddi yardımda bulunarak ekonomilerinin yeniden inşalarında etkin rol oynamıştır. Kapitalist blokta yer alan Türkiye de Amerikan yardımları kapsamına alınmıştır. Söz konusu süreçte Amerikan hegemonyası, ABD’nin ilişki kurduğu ülkelerde modernleşme ve kalkınma anlayışlarının şekillenmesinde belirleyici olmuştur. Bu çalışmada Amerikan yardımlarının içerdiği şartlar ve Amerikalı uzmanların Türkiye hakkındaki raporları Amerikan hegemonya araçları olarak ele alınmaktadır. Çalışmanın amacı, 1945-1960 arası dönemde Türkiye’de hakim modernleşme ve kalkınma söylemlerine odaklanarak Amerikan hegemonyasının yansımalarına dair bir analiz sunulmasıdır. Bu genel çerçevede, çalışmada ilk olarak Amerikan hegemonyasının tarihsel gelişimi kaynakları ve araçları bağlamında ele alınacaktır. Sonrasında CHP ve DP iktidarları döneminde modernleşme ve kalkınma söylemlerinde Amerikan etkisi, siyasi aktörlerin konuşmalarıyla desteklenerek somutlaştırılmaya çalışılacaktır.
Brain Hemisphericity and Saudi Students’ EFL Reading Comprehension
Authors: Almanea Manar
Published: June 2021

The present study is concerned with the relationship between brain hemisphericity and the reading comprehension of adult Saudi EFL learners. The tendency to rely on one side of the brain over the other can affect the degree of success in learning a foreign language as well as the appropriateness of learning and teaching strategies. A total of 122 Saudi university-level participated in the study. The first part of the study examines whether or not there are significant differences between the performance of right-brained learners, left-brained learners, whole-brained learners, whole-brained learners favoring right mode, and whole-brained learners favoring left mode in an EFL reading comprehension test. The EFL reading comprehension includes main idea questions, inferential questions, literal-meaning questions and text-bound questions. The Hemispheric Mode Indicator® is used to determine hemispheric preference of the participants. Findings revealed significant superiority of the performance of left-brained learners as compared to right-brained learners and whole-brained learners favoring right mode. This result suggests that even in a foreign language learned after childhood, the left-hemisphere seems to control brain activities dealing with language. In the second part of the study, participants were trained to use a visual tool (Mind Mapping ®) to summarize the information of the reading passage before answering a parallel reading comprehension test. Whole-brained learners favoring right mode, and right-brained learners were the two groups who benefited the most from the visual tool. This result was expected since the visual tool activates some right hemispheric functions. It is concluded that learners with different modes of hemisphericity learn in different ways.
Literary Characters and their Verbal Mimicry through the Prism of Gestalt Analysis
Authors: Morozova Iryna , Pozharytska Olena
Published: June 2021

The paper represents a fragment of a multi-year project focused on everyday speech interaction and, particularly, on verbal mechanisms of granting speech efficiency and effectiveness. The introductory statement of the research is more precise thespeaker organizes his/her message verbally, the easier it is understood by the listener. Special attention is paid to the methodological approach to verbal identification of literary characters’ social strata. The paper also elicits how Gestalt analysis can be successfully applied to different practical linguistic tasks. Hence, the article deals with the advantages of Gestalt, used for unmasking the virtual speaker’s social identity and his social status. Besides, a close study of speech situations has revealed some cases when the speaker tries to play a verbal trick on the audience, thus consciously or unconsciously imposing a false image and hiding his/her true identity. The phenomenon of speech imposters, discovered in literary dialogues termed “speech, or verbal mimicry,” while the speakers who use such verbal masks are called “mimics.” In the presented research, two types of mimicry are distinguished: progressive and regressive speech mimicry. Hence, the characters’ speech was analyzed through the prism of his/her actual or imposed social status, which allowed to single out sufficiently reliable syntactic indicators of the speaker’s real social profile.
Stem education in general secondary educational institutions
Authors: Torop Kristina , Bakhmat Nataliia , Dzhevaha Hryhorii , Kuchumova Nataliia , Shvay Roksolyana
Published: June 2021

The purpose of the academic paper is to establish the relevance of the content and assessment of the preparatory course for teachers in the field of STEM education, as well as to determine the rating of educational topics for those professionals who plan to work in the STEM education system; to identify the knowledge and skills needed to work in STEM education. Research of STEM education is promising as well as further identification of the most effective concepts of STEM education, the formation of effective training courses in order to improve STEM qualifications of teachers in the field of secondary education. It is also promising to work on the introduction of the principles of STEAM education into the modern education system in Eastern Europe, where knowledge and skills of the artistic sphere are added to the list of main educational areas.
Social communications of students in the modern intercultural space
Authors: Kuzmenko Taras , Tsoi Tetiana , Goncharenko Iuliana , Zhvania Liudmyla , Kvitko Nataliia
Published: June 2021

The aim of this article is to study the influence of social communications on the formation of relations between students in the intercultural space on the example of the State Higher Educational Institution "Vasyl Stefanyk Precarpathian National University" and Kyiv University named after Borys Hrinchenko. Methods: analysis, synthesis, abstraction, modeling, description, observation, comparison, tabular and graphical representation, questionnaires and generalizations. Results: It is determined that countries such as Australia, Canada, Great Britain, New Zealand, France and the Netherlands have the highest rates of attracting foreign students to study in higher education institutions. The most international universities in the world are the University of Hong Kong, ETH Zurich, Chinese University of Hong Kong, University of Oxford and Imperial College London, which occupy the first five positions in the World University Rankings 2021. It was found that most often social communication between students belonging to different socio-cultural groups occurs using social media.
Institutional and national challenges of teacher education in the context of the COVID-19 pandemic
Authors: Dorozh Iryna , Bielykh Oksana , Blyznyuk Lyudmyla , Tovkun Lidiia , Kotsur Nadiia
Published: June 2021

The purpose of the study is to establish the pattern of institutional and national challenges for teacher education in the context of the COVID-19 pandemic, by conducting regression analysis and research of regulations of the world, to identify challenges for teacher education and the ability to provide quality education in the context of distance learning. Research methods: systematization; comparative analysis; generalization; regression analysis. Results. After conducting a regression analysis, it was found that the value of the coefficient of determination shows that the regression model by 60% reflects the direct dependence of the availability of emergency distance education in 30 countries, based on the results of access to personal computers among students and the current cost of education. It has been established that countries such as Denmark, Switzerland, Austria, Norway and Luxembourg have a favorable climate for emergency distance education.
Adopting the “Explain EDU” Application Approach in Teaching Mathematics and Statistics
Authors: Md Noh Nur Hidayah , Yusoff Sarah , Hassanuddin Nor Aini , Mohamad Sukri Nursyazni
Published: June 2021

Interactive whiteboards (IWB) is known as one of the most revolutionary instructional technologies for various educational levels. One of the popular applications among educators that can be used as an extremely versatile interactive whiteboard is 'Explain EDU' (EEDU) application. EEDU works as a platform for borderless learning, sharing and collaborating using an IWB. It is an iPad app that is used to create dynamic lessons, presentations and other content that can be easily shared with others. Students who participated in this study are those from Faculty of Computer and Mathematical Sciences who enrolled in a mathematics or statistics course at Universiti Teknologi MARA (UiTM) Terengganu during the March – July 2019 semester. This study aims to gain insight on students' opinions and perspectives in learning Mathematics and Statistics subjects when being taught by using the EEDU application. The result suggests that the use of Explain EDU application in class for teaching does enhance students attitude towards learning mathematics or statistics course.

Keywords: innovative teaching, interactive whiteboard, explain EDU application, iPad
EatNTrack Malaysia Mobile Application Food Calories Tracker - A Conceptual Paper
Authors: Mohd Saleh Maisarah , Abd Rahman Siti Aishah , Nazarudin Ainamardia , Abu Kasim Nurul Ain , Abdul Razak Fatin Aqilah
Published: June 2021

Diet and nutrition apps are among the most popular health and fitness apps used by an increasing number of mobile device users. Undeniably, health and nutrition are some of the valuable aspects of life. With the introduction of mobile computing, health knowledge became much easier to understand due to its mobility and usability. A vast range of smartphone apps is emerging for tracking health and food. However, the existing mobile applications in Malaysia are lacking some important features. To address this limitation, the present mobile application responds by attempting to design and develop a Malaysian mobile nutrition application known as EatNTrack. EatNTrack is a mobile nutrition application that provides crucial features such as the ability to capture the food especially Malaysian foods, scanning food barcode, set the goal and calories of the day, a reminder for the user to capture the food, monthly progress of user, and integration with a wearable device. The needs of these features will give insight into many aspects of a user's eating habits. The more specific and accurate users with reporting, the more accurate their information will be. The aim of the study was to establish an innovative mobile-based dietary awareness tool that could be used to monitor target users' food intake.

Keywords: nutrition, mobile application, food calories, track calories, health