bluuebunny/crossref_metadata_2025_split huggingface dataset:
Technology Support for Distance Learning at Indonesia’s Underdeveloped Regions Universities
Authors: Kusumaningrum Dian , Noviyanti Anastasia Ary 
Published: April 2024

The Ministry of Education (MoE) provided technology support to strengthen the educational capacity during the COVID-19 Pandemic. MoE’s support include educational tablets (DIKTI Edu), SPADA DIKTI (online platform of distance learning), internet satellite (VSAT), and Mobile VSAT. This research aims to assess the impact of three main aspects: the support of online learning, inequality in access to education, and increasing the quality of lecturers and the learning process. A survey of 657 undergraduate students was conducted based on a purposive stratified sampling in underdeveloped areas from four chosen provinces. Descriptive statistics and a before-after tests were done. Results shows that the devices were received well and has been used as their primary device for distance learning. Moreover, the impact was promising because all three aspects indicated significant positive effects. Nonetheless, the MoE still must tackle some drawbacks:1. Students facing technical barriers feel that improvement in the accessibility to install vital software needed and providing a device with a sim card slot ,for online learning is prominent, 2. Socialization of SPADA DIKTI and access to more relevant materials for broader students is also recommended and 3. In-depth studies on student I.T. awareness and further dynamics of grades should be conducted.
Pengembangan Media Pembelajaran Articulate Storyline 3 dengan Pendekatan Realistik untuk Meningkatkan Komunikasi Matematis
Authors: Anggraini Defi , Yunarti Yuyun 
Published: April 2024

Guru matematika SMP N 1 Punggur Lampung Tengah dalam menyampaikan materi pelajaran masih menggunakan buku cetak, LKS dan belum menggunakan media pembelajaran. Selain itu, peserta didik masih merasa sulit memahami materi pelajaran matematika. Sebagian besar peserta didik menganggap matematika pelajaran yang sulit dan membosankan sehingga diperlukannya pembelajaran yang menarik dan lebih kreasi dengan bantuan media pembelajaran. Tujuan dari penelitian ini yaitu: (1) mengembangkan media pembelajaran articulate storyline 3 dengan pendekatan realistik untuk meningkatkan komunikasi matematis; (2) mengetahui kevalidan dan kepraktisan media pembelajaran articulate storyline 3 dengan pendekatan realistik untuk meningkatkan komunikasi matematis; (3) mengetahui keefektifan media pembelajaran articulate storyline 3 dengan pendekatan realistik untuk meningkatkan komunikasi matematis. Jenis penelitian ini merupakan penelitian pengembangan Research and Development (R&D) dengan model 4-D yang terdiri dari 4 tahap yaitu define (pendefinisian), design (perancangan), develop (pengembangan) dan disseminate (penyebaran). Lokasi penelitian ini di SMP N 1 Punggur. Subjek dalam penelitian ini adalah 33 orang peserta didik kelas VII di SMP N 1 Punggur. Materi yang dikembangkan adalah materi aljabar. Hasil pengembangan dengan menggunakan 4-D menunjukkan bahwa hasil validasi media sebesar 84 persen dengan kriteria “sangat valid” serta validasi ahli materi yaitu 89 persen dengan kriteria “sangat valid”. Selanjutnya hasil respon peserta didik mendapatkan persentase 84 persen dengan kriteria “sangat praktis”, sedangkan tes keefektifan media pembelajaran articulate storyline 3 menunjukkan hasil ketuntasan belajar sebesar 79 persen dengan kriteria “efektif”. Berdasarkan hasil tersebut dapat dikatakan bahwa media pembelajaran articulate storyline 3 dengan pendekatan realistik untuk meningkatkan komunikasi matematis yang dikembangkan sudah valid, praktis dan efektif untuk digunakan dalam proses pembelajaran.
Optimasi Konsentrasi Katalis CaO dari Cangkang Kerang Hijau (Perna viridis) dalam Reaksi Transesterifikasi Minyak Biji Karet (Hevea braziliensis) pada Pembuatan Biodiesel
Authors: Yunita Eni , Darwis Zulmanelis , Yusmaniar Yusmaniar 
Published: April 2024

Abstrak
Penelitian ini bertujuan untuk mendapatkan konsentrasi optimum katalis CaO pada karakteristik metil ester yang dihasilkan, yaitu densitas (40 °C), viskositas kinematik (40 °C), dan bilangan asam. Katalis CaO diperoleh dari kalsinasi cangkang kerang hijau selama 4 jam pada suhu 1000 °C dan dikarakterisasi dengan XRD. Ekstraksi minyak biji karet dilakukan dengan metode sokletasi menggunakan pelarut n-heksana selama 7,5 jam yang dilanjutkan dengan proses degumming menggunakan 2,5% (b/b sampel) H3PO4 pekat. Pra-esterifikasi dengan perbandingan massa minyak:metanol 1:3 menggunakan 0,5% (b/b sampel) H2SO4 pekat pada suhu 65 °C. Transesterifikasi dengan perbandingan massa minyak:metanol 1:4 menggunakan katalis CaO dengan konsentrasi 2,5; 5,0; 7,5; 10,0; dan 12,5 % (b/b sampel) pada suhu 65 °C. Hasil penelitian menunjukan konsentrasi optimum katalis CaO adalah 5,0% dengan karakteristik metil ester yaitu nilai densitas (40 °C) 0,8832 g/mL, viskositas kinematik (40 °C) 5,22 mm2/s, dan bilangan asam 1,42 mg KOH/g sampel. Analisa GC-MS pada kondisi optimum menunjukan komposisi terbesar metil ester yang dihasilkan adalah metil oktadekenoat, metil heksadekanoat, dan metil stearat
Kata kunci: cangkang kerang hijau, katalis CaO, metil ester, minyak biji karet, transesterifikasi
Abstract
Research on optimizing the concentration of CaO catalyst from green mussel shell (Perna viridis) in the transesterification reaction of oil (Hevea braziliensis) has been conducted. This research aims to obtain the optimum concentration of CaO catalyst on the characteristics of methyl esters produced, which are density (40 °C), kinematic viscosity (40 °C), and acid numbers. CaO catalysts were obtained from calcination of green mussel shells for 4 hours at 1000 °C and characterized by XRD. Rubber seed oil extraction was carried out using the socletation method using n-hexane solvent for 7.5 hours followed by a degumming process using 2.5% (w/w sample) of concentrated H3PO4. Pre-esterification with 1:3 oil:methanol mass ratio using 0.5% (w/w sample) concentrated H2SO4 at 65 °C. Transesterification with 1:4 oil:methanol mass ratio using CaO catalyst with concentration of 2.5; 5.0; 7.5; 10.0; and 12.5% (w/w sample) at 65 °C. The results showed that the optimum concentration of CaO catalyst was 5.0% with the characteristics of methyl ester namely density value (40 °C) 0.8832 g/mL, kinematic viscosity (40 °C) 5.22 mm2/s, and acid number 1,42 mg KOH/g sample. GC-MS analysis at optimum conditions shows the largest composition of methyl esters produced is methyl octadecenoate, methyl hexadecanoate, and methyl stearate
Keywords: green mussel shell, CaO catalyst, methyl ester, rubber seed oil, transesterification
Analysis learning outcomes of mathematics education student in the online learning
Authors: Sitepu Christina , Gultom Sanggam P. , Hutauruk Agusmanto J. B. , Panjaitan Simon M. 
Published: April 2024

This research aims to look at the impact and learning outcomes of using LMS and online learning platforms, so it is necessary to analyze learning outcomes and how they impact students, lecturers, and learning organizing institutions. This research shows that the LMS and online learning platforms used can improve student learning outcomes, which cannot be separated from the readiness of lecturers and students to implement it. This research used factor analysis (CFA), with a total of 150 respondents, students, and 15 lecturers. The impact provided by the use of LMS and online platforms in online learning is in the form of GPA and students' views on the learning process they have gone through. From the research results, several findings were obtained, including the ability to use LMS in online learning is not optimal, the GPA of learning outcomes is relatively high, and the readiness of lecturers and students to use LMS in online learning is still low.
Determinants of Academicians’ Mental Health in Higher Education Institutions: A Systematic Literature Review
Authors: Sakarji Siti Rosnita , Othman Abdul Kadir , Narmaditya Bagus Shandy , Mohd Beta Raja Mayang Delima , Mahmud Azuati 
Published: April 2024

Due to the nature of the demanding working circumstances, most academicians at higher education institutions have therefore been vulnerable to experiencing mental health issues. This present study aims to investigate the prominent factors that influence academics' mental health in higher education through systematic reviews. In detail, this study is intended to analyze the trends, patterns, and knowledge gaps on the factors affecting mental health. Using the PRISMA protocol to identify and analyze datasets from the Web of Science (WoS), Scopus, Google Scholar, and Science Direct. In this present study, twenty-one papers were selected and analyzed. The findings indicate a robust influence of job demand on mental health among academicians in higher education. These review papers reveal that there is an increasing amount of research on the factors influencing the mental health of academicians in higher education. The findings highlight a worrying pattern of increasing job pressures and an increase in the frequency of mental health issues among academicians. Thus, there is a critical need for focused treatments and academic support networks to mitigate the increasing demands placed on faculty members and protect their mental health. This study contributes to the literature by focusing on mental health, primarily the job demands of academicians in the context of higher education institutions.
Examining Grassroot Innovation: A Case Study of the Curry Puff Maker Machine Project from a Socioeconomic Perspective
Authors: Muhamat Amirul Afif , Abd Rashid Muhammad Hafiz , Yusri  , Ibrahim Muhammad Azman , Salleh Sharmila Mohamed , Hilmiyah Nurul , Basri Mohd Faizal 
Published: April 2024

Grassroots innovation is a customised innovation programme aimed at empowering the community by demonstrating creativity, resourcefulness, and technological proficiency to tackle issues that impact their daily life. Yayasan Inovasi Malaysia (YIM) is a prominent institution in Malaysia that serves as an anchor for this endeavour. This study examines a project that was awarded an innovation grant to produce curry puff makers and distribute the machines to individuals from marginalised demographics, including single moms, handicapped individuals, and others. The methodology of research for this study involves using a qualitative method, namely a descriptive case study approach, to engage with the grant recipient. The feedback was evaluated using thematic techniques. The project has successfully achieved its objectives across the four examined categories: social, economic, environmental, and technological adoption.
Exploring the Phenomenon of Selfie-Posting Behavior among Social Media Users
Authors: Mohd Ramli Norsyazwani , Ali Syukrina Alini Mat , Yunus Noorain Mohamad , Jailani Sri Fatiany Abdul Kader , Shobri Nor Diyana Mohammed 
Published: April 2024

In the present day, the act of posting self-portraits, also known as selfies, is widely regarded as one of the most prevalent behaviors linked to the use of social media. Taking a selfie opens a new set of windows for activating specific identities, and over time and with readily available technological means, individuals are able to carefully construct online identities by editing their appearance and idealizing their self-portraits. The research discusses selfie-posting behavior in which to find out what the users are doing or constructing selfies before posting them. The primary aim of the current research is to examine these steps, specifically the context in motives, pre-occupation, selection of selfies, and selfie editing before posting. This study intended to focus on the social media users among Malaysians who engage in selfie activities. This research used a nonprobability sampling design, which is purposive sampling. The online questionnaire was administered as a cross-sectional survey, with data collected within a few months. This survey received 150 responses, and PLS SEM 4.0 was used to gather and analyze the data. Given the Selfie-Stadium Model, the finding showed that all variables are statistically significantly correlated to the following step. This research provides practical insights for developers to explore novel methods of improving device functionality and leveraging multitasking capabilities. Additionally, social media users can fully utilize device functions and benefit from technological advancements.
Response of growth and tuber seed production of G0 potato (Solanum tuberosum L.) cv Medians in medium lands of Jatinangor to biochar composition and retardant type
Authors: Dewi Tessa Prima , Hamdani Jajang Sauman , Mubarok Syariful 
Published: April 2024

Potatoes are the third most consumed food in Indonesia. The availability of high-quality potato tuber seeds is still low which affects potato production. Potato planting in the highlands is limited, so it needs to be expanded into medium lands. The modification that can increase the production of G0 potato tuber seeds on medium lands is the use of biochar and retardant. The purpose of this research was to determine the composition of biochar and the type of retardant to increase the G0 tuber seed yield of potato cv Medians in the medium lands of Jatinangor. The research was conducted from August 2022 to February 2023 at the Station Ciparanje, Jatinangor, Faculty of Agriculture, Universitas Padjadjaran. The experiment used Factorial Randomized Block Design (RBD). The first factor was the biochar compositions: b1 (100% compost), b2 (80% compost + 20% rice husk biochar), b3 (80% compost + 20% coconut shell biochar), and b4 (80% compost + 10% biochar husk rice + 10% coconut shell biochar). The second factor was the retardant type: r1 (without retardant), r2 (100 ppm paclobutrazol), and r3 (100 ppm prohexadione-Ca). The experimental results showed that there was no interaction effect of biochar compositions and retardant type on the growth and yield of G0 potato tuber seeds. Treatment of 80% compost + 20% coconut shell biochar suppressed plant height but increased the number of tubers. Treatment of 100 ppm paclobutrazol resulted in lower plant height but total chlorophyll content, percentage of stolon forming tubers, the number of tubers, and tuber weight per plant were higher compared to treatments without retardant and with 100 ppm prohexadione-Ca.
Response of growth, yield, and seeds quality of G0 potato on different potassium fertilizer doses and retardant concentrations in Jatinangor medium land
Authors: Ramadhani Selika Fitrian , Donita Yukta Alvira , Nuraini Anne , Kadapi Muhamad 
Published: April 2024

This study aims to determine the best interaction of potassium (K) fertilizer dose and retardant concentration on the growth, yield, and seed quality of G0 potato grown in the medium land of Jantinangor. The experiment was conducted at Screen House Station Ciparanje, Jatinangor, Faculty of Agriculture Universitas Padjadjaran from November 2022 until January 2023 at an elevation of ± 685 meters above sea level. The experimental design used was the Factorial Randomized Block Design (RBD). The first factor was the K fertilizer dose including 50%, 100%, and 150%. The second was the retardant concentration including without retardant, 100 ppm paclobutrazol, 100 ppm prohexadione-Ca, and 150 ppm prohexadione-Ca. The experimental results showed that there was an interaction effect between the K dose and retardant concentration. The interaction effect of 150% K and 100 ppm prohexadione-Ca showed the highest percentage of L class seed tuber and the lowest tuber weight loss. Independently, 150% K improved growth rate, number of tubers (6.67 knol/plant), and weight of tubers (73.33 g/plant). Independently, 100 ppm paclobutrazol concentration increased the chlorophyll content index. 150 ppm prohexadione-Ca concentration suppressed leaf area and plant height but increased stomatal conductance, fast emergence shoot time, and shoot length. 100 ppm prohexadione-Ca concentration produced the highest number of tubers and the weight of tubers, i.e., 6.78 knol/plant and 74.33 g/plant, respectively.
The effectiveness of different formulations of glyphosate herbicides under simulated rainfall conditions in controlling various weeds
Authors: Fajriani Syifa , Kurniadie Denny , Umiyati Uum 
Published: April 2024

Herbicide effectiveness is affected by herbicide formulation, rainfall, and weed type. Differences in glyphosate salt formulations and 2,4 D amine mixtures may result in variations in the herbicide's ability to wash off the herbicide due to rain. The aim of this study was to assess the effectiveness of different glyphosate herbicide formulations under varying rainfall in controlling various weeds. The experiment took place in a controlled greenhouse environment, utilizing a split plot experimental design with four replications. The main plot was assigned to six different rainfall timings: 0 hours after application (HAA), 1 HAA, 2 HAA, 3 HAA, 4 HAA, and no rainfall. The subplots involved different herbicide formulations, namely isopropylamine glyphosate (h1), potassium glyphosate (h2), sodium glyphosate (h3) and glyphosate herbicide, IPA herbicide glyphosate + 2,4 D Amine (h4) and without any herbicide application (h0). Various parameters were observed, including weed dry weight and percentage of mortality growth. The results showed that the effectiveness of each herbicide formulation was diffent among weed specie under simulated rainfall conditions. Ageratum conyzoides can be controlled using isopropylamine glyphosate and potassium glyphosate with rainfall at 1 HAA. Axonopus compressus can be controlled by isopropylamine glyphosate and sodium glyphosate with rainfall at 1 HAA, while Borreria alata and Cyperus rotundus were effectively controlled by isopropylamine glyphosate with rainfall at 1 HAA.
A comparison of synthetic fungicide and Trichoderma spp. applications against clubroot disease on cabbage
Authors: Tarigan Ra Siska , Hutabarat Rina Christina , Karo Bina Br , Sembiring Perdinanta , Napitupulu Delima , Supardi Supardi , Wicaksono Rudi Cahyo , Jamaluddin Jamaluddin , Setiawati Wiwin , Hasyim Ahsol 
Published: April 2024

Clubroot is one of the important diseases affecting members of the Cruciferae family. This disease is caused by soil-borne pathogen, called Plasmodiophora brassicae. The pathogen produces motile spores called zoospores. This pathogen results in a drop of cruciferous plant productivity. The objectives of this research were to identify specific Trichoderma species in three districts in Sumatra Utara and to evaluate the potency of T. harzianum (both local species from Berastagi and species developed by Indonesian Vegetable Research Institute (IVEGRI)) to control the disease and then comparing them with the application of synthetic fungicide. The research was conducted in a greenhouse of Research Installation and Application of Agricultural Technology (IP2TP), Berastagi, North Sumatera from April‒September 2018, using Completely Randomized Design (CRD) with eight treatments: C1 (control-without Trichoderma), C2 (T. harzianum IVEGRI obtained from corn substrate 2 g/polybag), C3 (T. harzianum IVEGRI obtained from rice substrate 2 g/polybag), C4 (T. harzianum IVEGRI obtained from corn substrate 4 g/polybag, C5 (T. harzianum IVEGRI obtained from rice substrate 4 g/polybag), C6 (local T. harzianum obtained from corn substrate 2 g/polybag), C7 (local T. harzianum obtained from corn substrate 4 g/polybag) and C8 (synthetic fungicide Nebijin). Each treatment contained 10 polybags of plants. These treatments were replicated four times. The results exhibited there were 3 Trichoderma species found in Berastagi: T. harzianum, T. viride and T. koningii. Also, 4 g of local T. harzianum (corn substrate) has better performance (0% disease incidence and 0% disease severity) compared to other treatments.
Textile Connector for Smart Textile Applications
Authors: Leśnikowski Jacek 
Published: April 2024

Abstract
Textile signal lines are some of the more significant parts of an electronic system incorporated in modern smart garments. These applications often need to make lines that are disconnectable. The article presents the construction of two textile connectors that can connect direct current textile electro-conductive lines. These connectors are mostly made of textile materials and are an alternative to conventional connectors or connectors using snap fasteners. The article presents basic research on the electrical properties of the connectors proposed. The present research examined the influence of the size and shape of the connector contacts on their resistance, measured after each disconnection and reconnection of both parts of the connectors. The article also presents research on the dependence of the electrical resistance of the connectors on the pressure force of their textile contacts. The test results presented, and their statistical analysis confirmed the suitability of the connectors presented for applications in e-textiles.
Usability of a telerehabilitation program for patients with musculoskeletal or oncological diseases: A mixed-methods evaluation / Benutzerfreundlichkeit eines Telerehabilitations-Programmes für Patient*innen mit muskuloskelettalen oder onkologischen Erkrankungen: Eine Mixed-Methods Evaluation
Authors: Stöhr Doreen , Matzka Martin , Gschwenter Stefan , Edlmayer Alexandra , Felder David , Spary Andreas , Reiger Gabriele , Honegger Martina , Skoumal Martin 
Published: April 2024

Abstract

Purpose
Telerehabilitation may stabilize the results of a previous phase 2 rehabilitation program through remote rehabilitation sessions. We evaluated a new telerehabilitation service (PV RehaTRAIN®) during its initial implementation, focusing on its usability both from the perspective of patients with musculoskeletal or oncological diseases and the interdisciplinary treatment team.

Methods
The evaluation followed a convergent mixed-methods design. After separate qualitative and quantitative analyses of the multi-perspective findings from interviews, focus groups and questionnaires, we interpreted the results collectively and equally.

Results
Overall, the results indicate high acceptance of and satisfaction with the new telerehabilitation service, especially from the patients’ perspective and regarding educational and individual counselling sessions. However, the treatment team identified a need for further didactic training to enable them to realize their full professional potential in a telerehabilitation setting.

Conclusion
The new telerehabilitation service PV RehaTRAIN® may bridge gaps in health care for patients who do not have access to conventional phase 3 rehabilitation infrastructure or prefer remote services that are readily integrated into their everyday lives. Members of the interdisciplinary treatment team offering telerehabilitation for the first time need adequate technical and especially setting-specific didactic training. Increased participation of treatment teams when refining telerehabilitation systems may minimize problems in early implementation phases and contribute to the quality of care.