bluuebunny/crossref_metadata_2025 huggingface dataset:
Improving Self Efficacy and Learning Motivation Through Hybrid Learning Based Google Classroom
Authors: Kurniawati Ari , Pardjono Pardjono , Mutohhari Farid , Nurhaji Soffan , Purnomo Sigit
Published: July 2023

Online learning that is currently taking place causes problems because of the limited learning models that can be done online, so that it can reduce students' self-efficacy and motivation to learn. Learning with the help of Google Classroom is one solution that can be applied to online learning activities in order to increase self-efficacy and student learning motivation. This study aims to analyses the effect of the application of Google Classroom on increasing self-efficacy and student motivation in the Department of Electrical Power Installation Engineering (TITL). This research is a quasi-experimental study using a pretest-posttest design in the control class and the experimental class. The sample in this study amounted to 80 students from the Department of Electrical Power Installation Engineering. The observation method was used to collect data on self-efficacy and learning motivation during the pretest and posttest by using an instrument that was arranged based on indicators on the dependent variable. The data obtained were then tested for prerequisites and then the data were analyzed using paired sample t-test and independent sample t-test. The results of data analysis showed that the use of Google Classroom proved significant in increasing students' self-efficacy and learning motivation in online learning activities for students of the Electrical Engineering Department. Learning activities with the help of Google Classroom are significantly superior to learning activities without the help of Google Classroom.
Students' Learning Difficulties at the Open University Webinar Tutorial
Authors: Gede Suwardika  , Agus Tatang Sopandi  , Indrawan Putu Oktap
Published: July 2023

The Open University (UT) is one of the pioneer universities that implement distance learning. However, students still encounter learning difficulties which become obstacles in distance learning. The purpose of this research is to analyses the construct of learning difficulties of students’ learning at Open University and to compare the contribution of indicator variables to the construct. This research uses a combination method of Concurrent Embed model, the primary method used is factor analysis method (EFA and CFA) and qualitative descriptive method as a secondary method. The research respondents were 126 students who had attended the webinar tutorial (Tuweb) at least twice and voluntarily filled out the questionnaire. Primary data were collected through online questionnaires and interviews. Quantitative data were analyzed using EFA and CFA, while quantitative data were analyzed descriptively qualitatively. The results showed that there are six factors of learning difficulties, each of which consisted of 4-9 indicator variables. The indicator variables that contribute the most to learning difficulties in Tuweb according to student perceptions include: (1) there are no clear guidelines regarding the online learning procedures that are carried out; (2) learning materials/content delivered by online tutors are difficult to understand; (3) the internet signal is not stable/good from students’ location; (4) students' families are constrained in providing facilities for online learning/webinar tutorials due to low income; (5) students do not understand how to study online; (6) The device used by the tutor is constrained during the Tuweb learning process.
3D Interactive Virtual Reality Media to Improve Learning Outcomes in Thematic Subjects
Authors: Riyana Cepi , Setiawan Budi
Published: July 2023

At the elementary level of school, learning activities are encouraged to prioritise student participation and interaction in the learning process. This is done in order to maximise the overall educational experience. Utilising different kinds of educational media that are based on technology is one of them. It is with media that is based on virtual reality (VR), which gives users the ability to interact with goods in a virtual setting that not only appears real but also has the sensation of being real. This study aims to develop 3D Virtual Reality Interactive Media to improve student learning outcomes in elementary schools. A quasi-experimental approach was utilised for the methodology of this research, and pre- and post-test control groups were included. The learning achievement test is the tool that is being utilised in this research. Students in fourth grade from elementary schools participated in the research project. The following are some of the findings that emerged from this research: (1) the development of a model for 3D virtual interactive multimedia; (2) the implementation of learning through 3D virtual reality interactive media utilising a systems perspective; (3) Varieties of learning assessment (assessment) that make use of authentic assessment; (4) Data demonstrating a good response from students towards the implementation of 3D virtual reality interactive media. It has been demonstrated that the implementation of interactive media in the form of 3D virtual reality has been successful in enhancing the learning outcomes of students in Thematic Subjects, particularly Science in Elementary Schools.
Gold-Reducing Cathode Reactions Kinetics in Acid Thiourea Electrolytes
Authors:   National Technical University ", Smirnova Olha ,   Kharkiv Polytechnic Institute",   2, Kyrpychova St., 61002 Kharkiv, Ukraine, Rudachenko Nataliia ,   National Technical University "Kharkiv Polytechnic Institute" 2, Kyrpychova St., 61002 Kharkiv, Ukraine, Pylypenko Oleksij ,   O.M. Beketov National University of Urban Economy in Kharkiv 17, Marshal Bazhanov St., 61002 Kharkiv, Ukraine
Published: July 2023

The kinetics of cathode reactions occurring on a gold electrode in acidic thiourea-citrate electrolytes has been studied. Using classical electrochemical methods (potentiometry, chronovoltammetry, electrogravimetry) and graphic-analytical calculations, the following were established: the instability constant of gold complexes, the type of kinetics, the nature of the delayed stage, and the main kinetic characteristics of the electrochemical reaction during gold deposition.
The Immobilized Cu-Ni-Fe-Cr Layered Double Hydroxide on Silica-Layered Magnetite as a Reusable Mesoporous Catalyst for Convenient Conversion of Epoxides to 1,2-Diacetates
Authors:   Faculty of Science and Chemistry, Urmia University, Urmia 5756151818, Iran, Zeynizadeh Behzad , Gilanizadeh Masumeh ,   Faculty of Science and Chemistry, Urmia University, Urmia 5756151818, Iran
Published: July 2023

In this study, Cu-Ni-Fe-Cr layered double hydroxide (LDH) immobilized on silica layered magnetite (Fe3O4@SiO2@Cu-Ni-Fe-Cr LDH) was investigated towards ring opening of diverse epoxides with acetic anhydride to afford vic-diacetates within 15–40 min in high yields. Reusability of the nano-LDH was also studied for 6 consecutive cycles without the significant loss of catalytic activity.
Transformation of Hexoses on Natural and Synthetic Zeolites
Authors:   V.P.Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences 1 Acad. Kukharya St., 02094 Kyiv, Ukraine, Patrylak Lyubov , Konovalov Serhii ,   V.P.Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences 1 Acad. Kukharya St., 02094 Kyiv, Ukraine, Zubenko Stepan ,   V.P.Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences 1 Acad. Kukharya St., 02094 Kyiv, Ukraine, Yakovenko Anzhela ,   V.P.Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences 1 Acad. Kukharya St., 02094 Kyiv, Ukraine
Published: July 2023

A number of zeolite catalysts based on synthetic powder zeolites and natural Ukrainian clinoptilolite as well as mordenite-clinoptilolite zeolite rocks were synthesized. The activity and selectivity of the prepared samples were compared in glucose and fructose dehydration into 5-hydroxymethylfurfural in a dimethyl sulfoxide environment.
Effect of Modifying the Clinoptilolite-Containing Rocks of Transcarpathia on Their Porous Characteristics and Catalytic Properties in the Conversion of C6-Hydrocarbons
Authors:   V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences of Ukraine 1 Acad. Kukharia St., 02094 Kyiv, Ukraine, Voloshyna Yuliya , Pertko Olexandra ,   V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences of Ukraine 1 Acad. Kukharia St., 02094 Kyiv, Ukraine, Povazhnyi Volodymyr ,   V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences of Ukraine 1 Acad. Kukharia St., 02094 Kyiv, Ukraine, Patrylak Lyubov ,   V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences of Ukraine 1 Acad. Kukharia St., 02094 Kyiv, Ukraine, Yakovenko Angela ,   V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Sciences of Ukraine 1 Acad. Kukharia St., 02094 Kyiv, Ukraine
Published: July 2023

The efficiency of modifying the Ukrainian clinoptilolite-containing rocks to improve their adsorption and catalytic properties was evaluated based on the data of XRD, IR spectroscopy, low-temperature N2 adsorption, and testing in the micropulse catalytic transformation of C6-hydrocarbons. The effect of such modification on the distribution of reaction products was established.
Growth of Dyera polyphylla and Shorea balangeran Seedlings on Various Growing Media for Restoration Program
Authors: Setyawati Lilis , Istomo  , Sundawati Leti , Tata Hesti Lestari
Published: July 2023

The success of peat swamp ecosystem restoration needs to be supported by the supply of good quality native plant species, one of which is influenced by the growing media. This study aimed to evaluate the effect of cocopeat, compost, and biochar as a mixture of peat media on the growth of Dyera polyphylla and Shorea balangeran seedlings in a greenhouse for six months. The experiment was carried out using a completely randomized design with one factor, growing media (100% peat as M1 (control); 70% peat + 30% cocopeat as M2; 70% peat + 30% compost as M3; and 70% peat + biochar 30% as M4). The survival rate of both types of seedlings in all growing media treatments was 100%. Dickson Quality Index (DQI) of D. polyphylla seedlings on M1, M2, M3, and M4 was 0.32, 0.29, 0.46, and 0.31, respectively, and for S. balangeran was 0.15, 0.10, 0.09, and 0.12, respectively. Adding cocopeat, compost, and biochar could increase the nutrient content of peat media. The growing media with the best quality for D. polyphylla was M3, while for S. balangeran was M1.
Keywords: Dickson Quality Index, Dyera polyphylla, growing media, growth response, Shorea balangeran
Peningkatan Keamanan Transmisi Data REST API Menggunakan Enkripsi SHA-512
Authors: Parabi M Iqbal , Kurniawan Didik , Prabowo Rizky
Published: July 2023

Perkembangan teknologi informasi terus meningkat seiring dengan kebutuhan organisasi dalam mengelola proses bisnis menggunakan berbagai sistem yang saling terhubung. Pada proses transmisi data antar sistem, dibutuhkan keamanan tingkat tinggi yang mampu menjamin integritas data dalam hal keutuhan dan konsistensi data, khususnya sistem keuangan yang memiliki data sensitif. Exposure data sensitif melalui Application Programming Interface (API) merupakan salah satu kerentanan pada keamanan sistem berbasis web. Man in the Middle Attack (MitMA) merupakan jenis serangan yang sering terjadi ketika transmisi data menggunakan API. Penelitian ini bertujuan untuk meningkatkan keamanan transmisi data pada Representational State Transfer (REST) API menggunakan enkripsi Secure Hash Algorithm (SHA)-512. Hasil penelitian menunjukkan bahwa penerapan enkripsi SHA-512 mampu meningkatkan keamanan transmisi data dari client ke server maupun sebaliknya. Pada metode POST, data request yang terenkripsi memiliki performa lebih baik 2,8% dibandingkan dengan data request yang tidak terenkripsi. Sedangkan pada metode GET, data request yang terenkripsi lebih lambat 12,5% dibandingkan dengan data request yang tidak terenkripsi. Hal ini dikarenakan adanya proses enkripsi dan dekripsi yang dilakukan server untuk mengelola response sehingga membutuhkan waktu lebih lama.
REKONTRUKSI FIQH ISLAM: Menuju Fiqh Nusantara
Authors: Masbukin Masbukin
Published: July 2023

Tulisan ini membincangkan tentang upaya rekonstruksi fiqh yang lebih berwawasan ke-Indonesiaan. Dalam konteks ini, fikih dipahami sebagai pandangan-pandangan keagamaan (baca, fikih) yang digali dari tradisi, kebiasaan, kondisi sosial dan politik Indonesia sendiri. Misalnya gagasan Abdurrahman Wahid tetang pribumisasi Islam, yang menghendaki agar konsep-konsep ajaran universal Islam diadaptasikan dengan nilai-nilai dan kebudayaan lokal yang tumbuh dalam masyarakat. Fiqh Nusantara menghendaki bahwa keputusan-keputusan hukum dalam Islam harus selalu mempertimbangkan kebutuhan-kebutuhan dan konteks lokal masyarakat. Melalui gagasan ini, ia menolak keras proses arabisasi atau mengidentikkan diri dengan budaya Timur Tengah.
MEMBACA ISLAM INDONESIA DI MASA ORDE BARU
Authors: Johansyah Johansyah
Published: July 2023

Hubungan Islam dengan pemerintah pada masa-masa awal pemerintahan terlihat kurang kompromi, namun dipenghujung kekuasannya, Orde Baru mulai melunak dengan Islam. Tulisan ini lebih lanjut, melihat kebijakan pemerintah Orde Baru terhadap Islam, tentang kebijakan pemerintah Orde Baru terhadap Islam dan faktor-fakktor apakah yang mendorong bagi semakin membaiknya hubungan Islam dan pemerintah. Islam yang bersifat substansialistik di masa Orde Baru telah meninggalkan kesan bahwa para praktisi politik Islam yang terlibat dalam proses penyelenggaraan negara pada dasarnya telah terkena politik kooptasi. Yang menyedihkan adalah adanya pandangan bahwa Islam telah dijadikan sebagai alat legitimasi rezim melalui proses-proses yang dianggap sebagai politisasi agama. Kesan demikian tidak dapat dihindari terutama karena semua itu berlangsung di dalam sebuah kehidupan politik yang tidak demokratis.
ISLAM DAN KEARIFAN LOKAL: Tradisi Nyeratus di Masyarakat Melayu Riau
Authors: Johansyah Johansyah
Published: July 2023

Tulisan ini menjelaskan tentang tradisi nyeratus di dalam Masyarakat Melayu Riau. Upacara ini dilakukan setelah usia 100 harii bagi keluarnya yang telah meninggal dunia. Upacara ini, biasanya mendoakan keselamatan bagi mereka (yang sudah meninggal atau keluarga yang ditinggal atau almarhum/almarhumah). Kemudian mereka membaca Qur’an, khususnya surah 36 (Yasin), dan tahlil. Dalam upacara peringatan nyeratus hari kematian sebagai puncak dari prosesi, dilaksanakan lebih meriah lagi, berbagai persiapan dilakukan mulai dari membersihkan rumah dan pekarangan, mengundang kerabat yang jauh dan dekat, sampai mempersiapkan bahan bahan yang akan dimasak untuk dihidangkan.
PARARUSYDIYAH: Potret Dinamika Pemikiran Islam Melayu
Authors: Syu'aib Kholil , Hanafi Imam
Published: July 2023

Kajian di kawasan Dunia Melayu (Asia Tenggara) beberapa dekade terakhir ini telah menyeruak kepermukaan. Seiring dengan itu, studi keislaman di kawasan ini telah mendapatkan apresiasi yang layak lewat tangan-tangan peniliti ahli keislaman dari dunia Melayu sendiri, juga apresiasi yang fair dari ahli keislaman non-Islam dari berbagai belahan dunia. Tulisan ini, menjelaskan tentang aktivitas intelektualisme masyarakat melayu pada abad 18, yang tentunya Raja Ali Haji sebagai tokoh sentralnya masa itu.
MEMBACA KEPEMIMPINAN MELAYU NUSANTARA Kajian atas Nilai-Nilai dalam Tradisi Melayu
Authors: Roza Ellya , Tazkiyah Safira , Pama Sindi Ayudia , Hanafi Imam
Published: July 2023

Kepemimpinan merupakan suatu proses ketika seseorang memimpin (direct), membimbing (guide), memengaruhi (influence) atau mengontrol (control) pikiran, perasaan, atau tingkah laku orang lain. Di dalam kajian tamadun Melayu, kepemimpinan Melayu merupakan kemaslahatan umat yang diperuntukkan bagi keperluan hidup di dunia dan di akhirat. Studi ini adalah studi literatur yang menfokuskan kajian kepada kepeimpinana Melayu. Kajian ini menemukan bahwa kepemimpinan Melayu adalah tak lekang oleh panas dan tak lapuk oleh hujan. Artinya dalam pola kepemimpinan di Alam Melayu Nusantara terdapat moderasi yang telah bersebati dengan alam pikiran masyarakat Melayu yang notabenenya Nusantara sehingga banyak ditemukan jenis kepemimpinan yang menjadi tradisi kelaziman dalam mengatur kehidupan dengan sesama makhluk Allah
GURINDAM DUA BELAS DAN PENDIDIKAN ANAK USIA DINI Mengenalkan Pendidikan Karakter Melalui Sastra
Authors: Sakila Siti Risda , Arbi Arbi , Dewi Eva , Rohani Rohani
Published: July 2023

Artikel ini menegaskan akan pentingnya sastra dalam memberikan orientasi nilai bagi anak-anak usia dini. Salah satu sastra warisan masyarakat Melayu adalah Gurindam Dua Belas karya Raja Ali Haji. Gurindam Dua Belas memiliki kandungan makna yang penuh dengan nilai-nilai karakter. Nilai karakter yang pertama, religius, ternyata mendasari nilai-nilai karakter yang lain. Orang yang memiliki sifat/ karakter religius yang tinggi akan mampu menunjukkan sikap jujur, toleran, disiplin, kerja keras, dan sebagainya sebagaimana yang ada pada delapan belas nilai tersebut. Apabila dicermati lagi, perwujudan nilai karakter tersebut terakumulasi oleh nalai pertama dan nilai terakhir, yaitu religius dan tanggung jawab.
Pengembangan Handout Sejarah Berbasis Gambar Untuk Melatih Berpikir Kritis Peserta Didik Di SMAN 1 Padang Panjang
Authors: Hasbi Syaiful , Zafri Zafri
Published: July 2023

Pembelajaran sejarah saat ini menuntut peserta didik untuk berfikir secara kritis. Penelitian ini dilatarbelakangi oleh kurangnya kemampuan peserta didik berpikir kritis. Penelitian ini memberikan solusi dari permasalahan tersebut yaitu dengan mengembangan handout berbasis gambar untuk melatih berpikir kritis peserta didik di SMAN 1 Padang Panjang. Penelitian ini bertujuan untuk mendeskripsikan langkah-langkah pengembangan handout berbasis gambar untuk melatih berpikir kritis peserta didik dan mendeskripsikan kelayakan serta kepraktisan handout berbasis gambar untuk melatih berpikir kritis peserta didik. Penelitian pengembangan ini menggunakan metode R&D dengan model ADDIE.
Customer Satisfaction on Online Shopping Service Quality During Covid-19 Spreading
Authors:   Department of Economics and Economic Relations, Faculty of Economics, University of Aleppo, Aleppo / SYRIA., Zannrni Eyad , Al-salami Qusay ,   Department of Business Administration, College of Administrative and Financial Sciences, Cihan University-Erbil, Kurdistan Region / IRAQ, El-Zelawi Fatma ,   Department of Computer, Sciences and Arts Faculty, Benghazi University, Benghazi / LIBYA
Published: July 2023

Measuring customer satisfaction with online shopping (CSOS) service is indispensable nowadays, especially during COVID-19 spreading. Therefore, measuring customer satisfaction (CS) has become necessary to develop the quality and continuity of services. This research has three objectives: specifying factors that play a role in customer satisfaction on multi-communications companies' online-service quality (OSQ) in Erbil, measuring the effect of these factors, and examining the difference in satisfaction among customer groups taking into consideration the demographic information. The sampling is selected randomly from (144) customers having been shopping during the Covid-19 spreading to be the target people of this study. Testing of the hypotheses shows that a positive and significant relationship has existed between customer satisfaction and online service quality (OSQ) on E-commerce platforms: Web Design and Reliability are the most influential factors in customer satisfaction, while safety and customer service have little impact. Besides other factors, demographic variables, such as age and monthly income, affect customer satisfaction at online shopping websites.
Disruptions in Supply Chain Transportation: A Literature Review
Authors:   College of Business and Social Sciences, Aston Business School, Aston University, Birmingham B4 7UP, UK, Ahmad Mahmood , Al-Bazi Ammar ,   College of Business and Social Sciences, Aston Business School, Aston University, Birmingham B4 7UP, UK
Published: July 2023

Efficient and well-organised transportation is crucial to the success of any supply chain operation, but disruptions can occur in competitive and globalised environments, leading to potential damage and interruptions. A thorough literature review on supply chain transportation research is conducted to address these disruptions from a transportation perspective. The objective is to present recent research on various aspects of the transportation problems, address the gap considering disruptions and propose a framework that outlines the factors that may cause transportation disruptions, their relationships, the types of impacts they have, and how they depend on one another.
О новом методе линейного программирования с использованием нейронных сетей
Authors: Ольховский Николай , Соколинский Леонид
Published: July 2023

В статье представлен новый итерационный метод линейного программирования, получивший название ``метод поверхностного движения''. Данный метод строит на поверхности многогранника, ограничивающего допустимую область задачи линейного программирования, путь от начальной граничной точки до точки, в которой достигается оптимальное значение целевой функции. Вектор движения строится в направлении максимального увеличения/уменьшения значения целевой функции. Представлено формальное описание алгоритма, реализующего метод поверхностного движения. Доказана теорема сходимости. Описанный метод предполагает использование глубокой нейронной сети прямого распространения для определения направления движения по граням допустимого многогранника. Для этого строится многомерный локальный образ задачи линейного программирования в точке текущего приближения, который подается на вход нейронной сети. Множество размеченных прецедентов, необходимое для обучения нейронной сети может быть получено с помощью апекс-метода.
Implementasi Multimedia Software Engineering Methodology Pada Pembuatan Perangkat Promosi Wisata
Authors: Adelia Tyrza , Andre Andre , Joshia Eki Manuel
Published: July 2023

Abstract—Artikel ini membahas tentang perbedaan antara multimedia interaktif dan non-interaktif. Multimedia non-interaktif ditampilkan dalam format linier dan pengguna tidak dapat berinteraksi dengan kontennya, sedangkan multimedia interaktif memungkinkan pengguna untuk berinteraksi dan mengontrol cara konten ditampilkan. Dalam pembuatan produk multimedia, developer biasanya mengacu pada dua metode, yaitu Software Development Lifecycle (SDLC) dan Multimedia Production Stage (MPS). MSEM (Multimedia Software Engineering Methodology) adalah metode pengembangan perangkat lunak yang didesain untuk membantu dalam pembuatan aplikasi multimedia interaktif atau non-interaktif. Studi ini mengkaji manfaat MSEM pada implementasi produk multimedia dengan mempelajari dampak dan manfaat penggunaan MSEM pada perangkat promosi wisata lokal yang memuat multimedia interaktif dan non-interaktif. Manfaat penelitian ini adalah untuk memberikan masukan pihak developer multimedia untuk menggunakan MSEM dalam merencanakan dan mengembangkan produk multimedia.
Abstrak—This article discusses the difference between interactive and non-interactive multimedia. Non-interactive multimedia is displayed in a linear format and users cannot interact with its content, while interactive multimedia allows users to interact and control the way content is displayed. In the creation of multimedia products, developers usually refer to two methods, the Software Development Lifecycle (SDLC) and the Multimedia Production Stage (MPS). MSEM (Multimedia Software Engineering Methodology) is a software development method designed to assist in the creation of interactive or non-interactive multimedia applications. This study examines the benefits of MSEM in multimedia product implementation by studying the impact and benefits of using MSEM in promoting local tourism products containing interactive and non-interactive multimedia. The purpose of this research is to provide input for multimedia developers to use MSEM in planning and developing multimedia products.
La mirada política del campo latinoamericano en ciencia, tecnología y sociedad
Authors: Davyt Amílcar
Published: July 2023

El campo de estudios en Ciencia, Tecnología y Sociedad en América Latina ha tenido, desde sus tempranos orígenes en los años sesenta y setenta pasados, un importante énfasis en una mirada política sobre las relaciones de los asuntos científico-tecnológicos con la economía, la cultura, la sociedad y el desarrollo de los países. Se discuten aquí algunas posibles razones para esta particularidad regional a lo largo del tiempo, vinculadas a los permanentes puentes que se han establecido y se refuerzan entre campos de ciencias “duras” y sociales, así como entre la producción académica y la acción política en gobiernos y organismos internacionales. Estas interacciones representan círculos virtuosos que deben promoverse y fomentarse, en aras de mejorar tanto las políticas públicas sobre la ciencia y la tecnología como la producción académica en la materia.
Self-Esteem, Social Media and Internet Addiction Regarding Adult Individuals
Authors: Balcı Süleyman , Tecimer Beytunur
Published: July 2023

The aim of current research is to analyze adult individuals’ levels of self-esteem, internet and social media addiction. Moreover, adult individuals’ levels of self-esteem, social media and internet addiction were investigated according to their employment and marital status, age and gender. In current research, Rosenberg Self-Esteem Test, Young Internet Addiction Test, Social Media Addiction Test for Adults, Descriptive Information Form, which were prepared by researchers were conducted for collecting necessary data for this research from the participants of 528 adult individuals. The results of the current research indicated that there are significantly negative relationships among adults’ levels of internet, social media addiction and the self-esteem; the higher their levels of self-esteem the lower their levels of social media and internet addiction. It was concluded that the adults’ addiction levels of social media and internet significantly predicted their self-esteem level. In addition, there exist significant differences regarding adults’ levels of social media and internet addiction, and self-esteem according to working and marital status and age. It was found that there is insignificant difference with regard to gender.
What YouTubers Tell Children
Authors: Sapsağlam Özkan
Published: July 2023

Today's children are growing up in a digital world, surrounded by electronic devices and interacting with various media types and characters from a young age. When used conscientiously, technology and media can have many positive contributions to human life. However, if not used properly, they have the potential to cause serious negative consequences. Learning through observation and imitation is crucial in children's learning processes. The quality of interaction with models and the models they learn from play an important role. Today, media characters are the ones that children are closest to and interact with the most. Some children spend more time in front of screens and in media environments than they do with their parents. As a result, the content that media characters present to children and how they behave can significantly impact what children say and do. To examine the content of YouTuber videos produced for children, we conducted a qualitative research study using a case study design. We used the criterion sampling method to select study materials, which included content videos produced by 10 different YouTubers. We obtained research data using the YouTuber Video Review Form developed by the researcher. To analyze the data, we used the thematic analysis technique, a type of content analysis method. Our findings revealed that the videos contained negative verbal expressions and visual content related to violence, aggression, slang, slander, harmful habits, product advertisements, and sexuality. Additionally, we observed that YouTubers used verbal expressions that did not follow language rules, exhibited a unique form of expression, and used dialectal language.
Single high-dose radiation therapy and liquid fiducial markers can be used in dogs with incompletely resected soft tissue sarcomas
Authors: Ericksen Timothy , Mauldin Neal , Dickinson Ryan , Mauldin Glenna
Published: July 2023

OBJECTIVE

To evaluate the outcome and effects of single high-dose radiation therapy with the aid of liquid fiducial markers in dogs following resection of soft tissue sarcomas (STSs).

ANIMALS

36 client-owned dogs.

METHODS

Dogs with a histologic diagnosis of a grade II or III STS that underwent liquid fiducial guided single fraction, 20-Gy stereotactic radiation therapy following surgical excision of an STS between May 2017 and March 2019 were prospectively enrolled in this study. Data collected from the medical records included patient signalment, tumor-related information, treatment details, and outcome. Kaplan-Meier survival analysis was performed for overall survival time (OST) and disease-free interval (DFI). The median OST and DFI were not reached, so restricted mean OST and DFI were also calculated.

RESULTS

36 dogs were included in the study. All dogs underwent radiation therapy a mean of 36.1 days (range, 20 to 59 days) after surgery. Acute and delayed radiation toxicity effects occurred in 80.5% and 36.1% of dogs, respectively, all of which affected the skin. Tumor recurrence was noted in 24.3% of dogs with a median time to recurrence of 272 days (range, 14 to 843 days). The restricted mean OST was 1,556 days (range, 1,383 to 1,728 days) and restricted mean DFI was 1,330 days (range, 1,101 to 1,559 days).

CLINICAL RELEVANCE

The results of this study showed that administering a single 20-Gy fraction of radiation in combination with a liquid fiducial marker to treat marginally or incompletely resected STS in the absence of gross disease resulted in similar OST and DFI compared to other previously reported radiation protocols.
Potential of Paulownia Leaves Silage in Lamb Diet to Improve Ruminal Fermentation and Fatty Acid Profile − An in vitro Study
Authors: Szulc Paulina , Nowak Bogumiła , Hassan Mahmood Ul , Lechniak Dorota , Ślusarczyk Sylwester , Bocianowski Jan , Szumacher-Strabel Małgorzata , Patra Amlan Kumar , Cieslak Adam
Published: July 2023

Environmental impact, quality, and quantity of food products of ruminant origin (especially beef and mutton) are considered major challenges in meeting the nutritional requirements of the growing human population worldwide. Therefore, we conducted this in vitro study to explore the potential of Paulownia leaves silage to reduce the environmental impact of feedlot lamb production and improve ruminal fatty acids (FAs) profile by influencing ruminal biohydrogenation. In the present study, Paulownia leaves silage (PLS) and alfalfa silage (AAS) were mixed in a proportion of 1:0 (Control, PLS 0%), 0.75:0.25 (PLS 25%), 0.5:0.5 (PLS 50%), 0.25:0.75 (PLS 75%) and 0:1 (PLS 100%) on dry matter basis in the lamb diet. The experimental findings demonstrated that 100% replacement of AAS with PLS in the lamb diet significantly improved the ruminal fermentation by increasing the in vitro DM degradability (P<0.01), total volatile fatty acid (P<0.01), and propionate production (P<0.01) while reducing the acetate: propionate (A/P) ratio (P<0.01) and CH4 concentration (mM; L and Q P<0.05) and CH4 production, mM/g DM (L and Q P<0.05). Meanwhile, 100% PLS inclusion in the diet increased the total monounsaturated fatty acids (P<0.05), total unsaturated fatty acids (P<0.01) and total n-3 fatty acids (P<0.05) particularly alpha-linolenic acid (ALA; C18:3 n-3; P<0.05) in the rumen fluid after incubation. Moreover, the total saturated fatty acids concentration was reduced (P<0.01). These findings suggested that PLS could be a climate-friendly and sustainable alternative to AAS in the lamb feedlot diet for quality meat production.
Assessment of Initial Investment Strategies for Different Farm-Scale Scenarios with Economic Cost Analyses in Offshore Salmon Farming
Authors: Yigit Ümüt
Published: July 2023

The simulation of investment strategies with different farm-scale scenarios has been evaluated for best management plan in cage farming business for the establishment of a salmon production with either full capacity or progressive investment. Economical revenues were analyzed with business risk assessment based on operating and fixed costs for each of the four scenarios. In the theoretical model projected for the stimulation of best management plans, structural elements for the construction of an offshore Turkish salmon farm in the Black Sea were designed and investment costs for an annual production capacity of 4,000 tons were re-scaled by 25, 50 and 75% reduction, corresponding to 3,000, 2,000 and 1,000 tons per year, respectively. Economic variables of operational costs were comparatively evaluated with the revenues and annual profit conditions by sales of harvested fish. The break-even points for all investment strategies with different farm-scale scenarios were remarkably lower (on average 302,574.7 kg/year) than the harvest yields from the farms (on average 3,702,857.1 kg/year). Based on break-even points and margin of safety (MOS over 85%), all farms gained net profits with low risks in the first year, whether the farm received full investment, or initiated business with reduced investment expenditures for a gradual and progressive expansion plan. Findings of this study exhibit useful indications for farm management in understanding conditions of a stepwise establishment of business plans for salmon farming in offshore conditions.
Prebiotic effects of dietary xylooligosaccharides on fish gut microbiota, growth, and immunological parameters – A review
Authors: Gufe Claudious , Merrifield Daniel L. , Hoseinifar Seyed Hossein , Rattanarojpong Triwit , Khunrae Pongsak , Abdel-Tawwab Mohsen
Published: July 2023

Xylooligosaccharides (XOSs) are being explored as prebiotics in fish diets; however, their effects and modes of action have not been well evaluated. Reports have shown that dietary XOS has the potential to improve the proliferation of beneficial gut microbes, and their metabolites, and enhance disease resistance in several fish species. In contrast, other studies report no substantial changes in immune and growth parameters compared to control groups. Like all prebiotics, the mode of action of XOS is based on their selective stimulation of beneficial gut microbiota, which will outcompete and prevent pathogen proliferation in the gut, and produce metabolites that modulate host immune responses. The reports of improved growth performance of XOS fed fish may be due to improved intestinal microbiome, enhanced glycolysis activity and elevated gastrointestinal enzymatic activities. Dietary XOSs have different effects on fish performance depending on the fish species and the structure of XOSs (degree of XOS polymerization and substitution). Nevertheless, further research is essential to determine the optimal dosage, degree of polymerization, and substitution levels required to improve each fish species’ gut health and growth performance. This review highlights the prebiotic effects of XOSs, their mechanism of action, and knowledge gaps.
Dandelion Root Extract in Trout Feed and its Effects on the Physiological Performance of Oncorhynchus mykiss and Resistance to Lactococcus garvieae Infection
Authors: Köse Özay , Karabulut Huriye Ariman , Er Akif
Published: July 2023

In this study, we investigated the dietary effects of dandelion root extract (DRE) on growth performance, body composition, serum biochemical parameters, intestinal and liver histology, and fish resistance against Lactococcus garvieae infection in the rainbow trout. In total, 540 rainbow trout fry (22.05±1.740 g and 13.03±0.470 cm) were used. Six experimental groups (control, 2.5 mL/kg (DRE-1), 5 mL/kg (DRE-2), 10 mL/kg (DRE-3), 20 mL/kg (DRE-4), and 40 mL/kg (DRE-5) dandelion root extract) with three replicates were formed. In each tank, 30 fish were placed and fed for 90 days, and the volume of water was adjusted to 80 L with a flow-through system. The results showed that the final fish weight, weight gain, specific growth rate, protein efficiency ratio, and protein deposition rate were significantly higher in the DRE-4 group, while the feed conversion ratio and fat deposition ratio were significantly lower compared to that in the control group (P<0.05). The viscerosomatic index and the hepatosomatic index decreased in the experimental groups depending on the concentration of the extract used, while the condition factor was higher than that in the control (P<0.05). The DRE significantly decreased glucose, cholesterol, triglyceride, low-density lipoprotein, alanine aminotransferase, and aspartate aminotransferase levels in blood serum in the fish from the experimental groups, but it significantly increased high-density lipoprotein, alkaline phosphatase, and total protein levels (P<0.05). Similarly, the DRE positively affected intestinal histology by increasing the stratum compactum, submucosa, lamina propria, villi length, villi width, absorption area, tunica muscularis thickness, mucosal folds, and goblet cell count. In the liver, depending on the high-fat diet (crude lipid = 20%), vacuolization areas, hepatocellular degeneration areas, apoptotic hepatocyte nucleus, and necrotic areas recorded in the control group decreased or even disappeared completely in the extract groups. The results of the challenge test showed that adding 2.5 mL/kg of the DRE to the feed positively affected the disease resistance against Lactococcus garvieae infection. The results of the quadratic polynomial regression showed that an average level of 23.91±1.048 mL/kg of DRE would be suitable for optimum fish growth.
Strategies for promoting sustainable aquaculture in arid and semi-arid areas – A review
Authors: Khanjani Mohammad Hosein , Sharifinia Moslem , Hajirezaee Saeed
Published: July 2023

Starvation and malnutrition are one of the most destructive problems faced by the poor and needy in the world. With the world population expected to increase by 9.7 billion by 2050, there are growing concerns about the long-term sustainability of many existing food production systems to meet future needs for food. Aquaculture is one of the important sources of food supply, the development of which is of great importance as an important weapon in the global fight against malnutrition and poverty, especially in developing countries and arid and semi-arid regions of the world. In recent decades, aquaculture has dominated all sectors of livestock production in terms of growth and increasingly contributes to food security, poverty reduction, job creation and sources of income. It is important to follow sustainable development goals to increase aquaculture production. Climate change is currently affecting food security through increasing temperature and decreasing rainfall, especially in arid and semi-arid regions. Food security is a global concern and access to affordable, nutritious, safe and properly cultivated food is one of the most important issues globally. The main emphasis in the development of aquaculture in arid and semi-arid areas is the use of new technologies based on water saving, such as biofloc technology (BFT), integrated multi-trophic aquaculture system (IMTA) and recirculating aquaculture systems (RAS). In this study, the importance of aquaculture as a sustainable source of food production in arid and semi-arid regions is discussed.
Effect of Drought and UV-B Stress on Leaf Morphology of Ash-Leaved Maple and Sycamore Maple
Authors: Çobanoğlu Hatice , Kulaç Şemsettin
Published: July 2023

Global climate change continues to leave irreversible effects worldwide. With the increase in the effects of climate change, especially in recent years, the amount of UV-B radiation reaching the earth's surface is also likely to increase. With increasing temperatures, the amount of precipitation in the world has decreased, and the drought has started to alarm. This study is tried to understand how plants can respond to these stresses using ash-leaf maple (Acer negundo L.) and sycamore maple (Acer pseudoplatanus L.) species. The effects of these stress factors on plant leaf morphology were investigated by applying certain intensities of drought (moderate [T2] and severe drought [T3]) and UV-B (8 kJ m-2 h-1 [T4] and 12 kJ m-2 h-1 [T5]) stresses on these two species with T1 (control) treatment. As a result, leaf width in A. pseudoplatanus species was at the lowest levels in individuals exposed to T3 and T9. In A. negundo species, leaflet length in T1, T2, T3, T4 T5, T6 (modarete+T4), T7 (modarete+T5), T8 (severe drought+T4), and T9 (severe drought+T5) treatment were 8.800, 8.704, 8.075, 8.792, 8.823, 8.516, 8.317, 7.993, and 8.605 cm, respectively. According to these values, it was observed that the leaflet length was the shortest in T8 (7.993 cm) treatment. On the other hand, the leaflet length in T9 was close to the T1 group. As a result, individuals exposed to T4 were more affected than T5 in applications applied to UV-B stress and T3. Therefore, the increase of UV-B radiation positively affects the plant's resistance to drought stress.
Mineralogy and Р-T conditions for the formation of metasomatic rocks of the Voznesenskoye gold deposit (Southern Urals)
Authors: Znamensky S. E.
Published: July 2023

Research subject. Mineral associations, their chemical composition, and formation conditions of metasomatic rocks of the Voznesenskoye gold deposit located in the area of the Main Ural Fault in the Southern Urals.

Methods. The chemical composition of minerals was studied using a Tescan Vega Compact scanning electron microscope equipped with an Oxford Instruments Xplorer 15 energy-dispersive analyzer. The formation P-T parameters were estimated using a chlorite geothermometer and a dolomite-calcite geothermobarometer.

Results and conclusions. Two types of metasomatic rocks were identified: 1) propylites, which make up the outer zones of the metasomatic aureole, and 2) beresite-listvenites, common in its inner parts and hosting gold mineralization. The main propylite minerals were amphibole, orthoclase, albite, and ripidolite. Amphibole is represented by two generations, with the early generation comprising magnesian and actinolite hornblende and the late generation comprising actinolite. The crystallization temperature of ripidolite (307–313°С) corresponds to the temperature range of formation of propylites of the albite-actinolite facies. Beresite-listvenites (association: quartz, albite, chlorite, white mica, and carbonate) were formed at a temperature of 255–338°C and a pressure of 0.48–0.72 kbar. Gold ore mineralization was concentrated in the highest temperature zones of the halo of beresite-listvenite alterations. Such temperature conditions existed in dikes and their exocontact zones disturbed by ruptures. Light mica in beresite-listvenites is represented by sericite and phengite, and carbonate is a paragenesis of calcite and dolomite-ankerite. According to the composition and formation period, chlorite is differentiated into early ferruginous ripidolite and late pycnochlorite, depleted in Fe and enriched in Si, which is probably associated with a decrease in temperature during mineral formation and an increase in the activity of sulfide sulfur in the fluid. Along with an increase in the distance from the ore bodies, pycnochlorite exhibits greater contents of Si and lower contents of AlIV. The observed changes in the pycnochlorite composition are related to a decrease in temperature. The research results indicate the formation of the Voznesenskoye deposit under mesothermal conditions.
Sifat Fisis dan Mekanis Papan Partikel Serbuk Batang Pisang dan Kulit Buah Kakao Bertulang Ayaman Lidi Kelapa
Authors: Zul Adha Dendy Kurniady , Mora Mora
Published: July 2023

Penelitian tentang pembuatan komposit dari serbuk batang pisang dan kulit buah kakao bertulang anyaman lidi kelapa terhadap sifat fisis dan mekanis papan partikel perekat resin epoksi telah dilakukan. Sifat fisis yang diuji meliputi densitas, kadar air, dan daya serap air. Sementara pengujian sifat mekanis meliputi kuat lentur dan kuat tekan. Papan partikel dibuat dengan memvariasikan komposisi partikel serbuk batang pisang dan kulit buah kakao yaitu 70%:0%, 50%:20%, 35%:35%, 20%:50%, 0%:70% dengan kadar resin epoksi 30%. Proses awal pencampuran serbuk batang pisang, serbuk kulit buah kakao, resin epoksi serta katalis. Bahan dibagi menjadi dua adonan dan dimasukan ke dalam cetakan besi ukuran 12 cm x 8 cm x 2 cm dan anyaman lidi kelapa sebagai pembatas antara dua adonan.Â  Cetakan dikempa dengan tekanan kempa sebesar 3000 kg pada suhu 180oC selama 10 menit. Hasil uji sifat fisis menunjukan bahwa papan partikel termasuk papan partikel berkerapatan tinggi dengan nilai densitas di atas 9 g/cm3. Berdasarkan kadar air dan daya serap airnya memenuhi ketentuan SNI 03-2105-2006. Untuk nilai kuat lentur (MOE) belum memenuhi standar sedangkan nilai dari kuat tekan (MOR) sudah memenuhi standar SNI 03-2105-2006. Variasi massa terbaik pada pembuatan papan partikel serbuk batang pisang 20% dan serbuk kulit buah kakao 50%.
Evaluasi Kondisi Jembatan Kuranji dengan Metode Horizontal To Vertical Spectral Ratio dan Pergerakan Partikel
Authors: Annisa Nurul , Pohan Ahmad Fauzi
Published: July 2023

Evaluasi kondisi jembatan diperlukan untuk melihat keadaan jembatan sebagai tindakan pencegahan terjadi kerusakan yang lebih besar pada struktur jembatan. Jembatan Kuranji terbagi menjadi 2 bagian yaitu jembatan lama yang berusia 30 tahun dan jembatan baru yang berusia 9 tahun. Evaluasi dilakukan dengan menggunakan pengukuran mikrotremor. Pengukuran dilakukan di 12 titik dengan durasi perekaman 90 menit. Hasil pengukuran mikrotremor diolah menggunakan metode Horizontal to Vertical Spectral Ratio (HVSR) dan pergerakan partikel (particle motion) menggunakan Software Geopsy. Pada analisis kurva HVSR dihasilkan nilai frekuensi alamiah. Untuk menentukan kondisi jembatan ditentukan nilai rasio frekuensi alamiah yang didapatkan dari pengolahan nilai frekuensi alamiah. Nilai frekuensi alamiah jembatan lama didapatkan sebesar 3,420 Hz dan 2,031 Hz untuk jembatan baru. Nilai rasio frekuensi alamiah jembatan baru sebesar 1,144% dan jembatan lama sebesar 2,611% dan dinyatakan jembatan baru berada dalam keadaan baik secara struktur dan jembatan lama berada dalam keadaan karatan (cacat kecil) yang memerlukan perawatan secara rutin. Pada metode pergerakan partikel didapatkan ketidakselarasan pergerakan struktur atas dan bawah jembatan lama yang dikhawatirkan dapat menyebabkan kerusakan pada struktur jembatan.