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Journal of Science and Technology: Alpha
Published by Lembaga Publikasi Ilmiah Nusantara
ISSN : -     EISSN : 30894298     DOI : https://doi.org/10.70716/alpha
Core Subject : Economy, Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Languange, Linguistic, Communication & Media Social Sciences
ALPHA: Journal of Science and Technology is a peer-review journal that could be access to the public, published by Lembaga Publikasi Ilmiah Nusantara with registered number ISSN 3089-4298. ALPHA provides a platform for researchers, academics, professionals, practitioners and students to embed and share knowledge in the form of empirical and theoretical research papers, case studies, literature reviews and book reviews related to science and technology research. ALPHA welcomes and recognizes high quality theoretical and empirical research papers, case studies, review papers, literature reviews, book reviews, conceptual frameworks, analysis and simulation models, technical notes related to research from researchers, academics, professionals, practitioners, and students.
Arjuna Subject : Umum - Umum
Articles 25 Documents
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Klasifikasi Ulasan Mahasiswa tentang Fasilitas dan Pelayanan Perguruan Tinggi Swasta PGRI dengan BiLSTM Nururrahman, Nazdaen Akbar
Journal of Science and Technology: Alpha Vol. 2 No. 1 (2026): Journal of Science and Technology: Alpha, January 2026
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/alpha.v2i1.358

Abstract

Student satisfaction with campus facilities and services is an important indicator in assessing the quality of higher education. This study develops a system for classifying student reviews related to facilities and services at PGRI Private Universities using the Bidirectional Long Short-Term Memory (BiLSTM) method. The research data consist of 3,067 student reviews collected through Google Forms and Google Maps, covering five service aspects: Physical Facilities and Core Infrastructure; Academic Support Facilities and Learning Resources; Administrative Services and Staff; Facilities and Environment Supporting Non-Academic Activities; and Security and Accessibility. The BiLSTM method with 300-dimensional FastText word embeddings is employed to classify reviews into service aspect categories and satisfaction levels (Very Satisfied, Satisfied, Moderately Satisfied, Less Satisfied, and Not Satisfied). The model architecture comprises two BiLSTM layers with 128 and 64 units, respectively, along with a dropout mechanism to reduce the risk of overfitting. Model performance is evaluated using a confusion matrix, precision, recall, F1-score, and overall accuracy. The results indicate that the BiLSTM model is able to classify service aspects with good accuracy, although the performance of satisfaction level classification is still affected by data imbalance and the similarity of expressions across satisfaction categories. Overall, the proposed system can provide automated analysis of student reviews and serve as a decision-support tool for universities in understanding service quality based on review data in a more objective and structured manner.
Pengaruh Penggunaan Nitrogen Cair dalam Demonstrasi Edutainment Kimia terhadap Pemahaman Konsep Suhu dan Perubahan Wujud Zat Arnita, Baiq Dewi Aprilia
Journal of Science and Technology: Alpha Vol. 2 No. 1 (2026): Journal of Science and Technology: Alpha, January 2026
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/alpha.v2i1.386

Abstract

Chemical edutainment demonstrations represent an engaging instructional approach to enhance students’ understanding of chemical concepts through enjoyable experimental activities. This study aims to explain the properties of liquid nitrogen and its effects on biological materials such as chicken eggs through the experiment “Sunny-Side-Up Egg Using Liquid Nitrogen.” The method employed was a practical demonstration with a descriptive observational approach. The observations revealed that liquid nitrogen, with its extremely low temperature (–196°C), can instantly freeze eggs without inducing chemical reactions, but rather through reversible physical changes. This activity enables students to comprehend the concepts of temperature, heat, and phase transitions by directly observing extreme cooling phenomena. Therefore, the use of liquid nitrogen in chemical edutainment demonstrations proves effective in increasing students’ interest and understanding of fundamental chemical concepts.
Analisis Dampak Penggunaan Media Sosial Terhadap Indeks Prestasi Kumulatif (IPK) Mahasiswa Prodi Pendidikan Kimia FKIP Unram Arnita, Baiq Dewi Aprilia; Safitri, Baiq Antika; Ulan, Firnaning; Jannah, Riadatul
Journal of Science and Technology: Alpha Vol. 2 No. 1 (2026): Journal of Science and Technology: Alpha, January 2026
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/alpha.v2i1.387

Abstract

Social media represents a form of technological advancement that is unavoidable among students. There are various types of social media platforms that are currently popular, including Facebook, Instagram, WhatsApp, TikTok, YouTube, Twitter, and Blogger. Each platform has specific advantages that attract its users, making them spend extended periods navigating the digital world. The use of social media depends on individual behavior as well as environmental influences. This study aims to determine the effect of social media usage on students’ GPA. The research employs a quantitative descriptive and inferential approach, with data analyzed using one-way ANOVA, normality testing, and homogeneity testing. The sample consisted of 31 fourth-semester students from the Chemistry Education study program. The findings indicate that students most commonly use WhatsApp (24%) and Instagram (28%), followed by YouTube (9%), Facebook (10%), TikTok (16%), Line (4%), Snapchat (4%), and X (4%). The survey also revealed a striking result regarding the intensity of social media use: 74% of students reported using social media for more than 4 hours per day, while 26% used it for less than 4 hours. Students who used social media for less than 4 hours had an average GPA of 3.23, whereas those who used it for 4 or more hours had an average GPA of 3.21. The one-way ANOVA analysis resulted in a significance value of 0.908 > 0.05, indicating that H₀ is accepted, meaning there is no significant effect of social media usage duration on students’ GPA. The normality test yielded a significance value of 0.200 > 0.05, indicating that the data are normally distributed. Meanwhile, the homogeneity test produced a significance value of 0.770 > 0.05, showing that the data are homogeneous.
Peran Pengelolaan Hama Terpadu (PHT) dalam Pertanian Berkelanjutan Manfaat Ekonomi dan Kepatuhan Hukum Yassin, Haykal; Aditia, Rian; Natasya, Heni Alia
Journal of Science and Technology: Alpha Vol. 2 No. 1 (2026): Journal of Science and Technology: Alpha, January 2026
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/alpha.v2i1.388

Abstract

Integrated Pest Management (IPM) represents a cornerstone of sustainable agriculture, combining ecological balance, economic efficiency, and legal compliance into a unified framework. This study explores the multifaceted role of IPM in promoting environmentally responsible farming practices while ensuring long-term productivity. By reducing dependence on synthetic pesticides, IPM mitigates soil and water contamination, preserves biodiversity, and supports climate resilience. Economically, IPM enhances farmers’ competitiveness by lowering input costs, stabilizing yields, and improving market access through compliance with safety standards. Legally, IPM aligns with national agricultural regulations and international conventions, reinforcing institutional accountability and farmer protection against sanctions. The integration of ecological, economic, and legal dimensions demonstrates that IPM is not merely a pest control strategy but a comprehensive system for advancing food security and sustainable development. The findings emphasize that IPM implementation strengthens agricultural innovation, supports educational objectives in Indonesia, and contributes to global sustainability agendas.
Integrasi Proses Elektrokimia dan Adsorpsi Karbon Aktif untuk Pengolahan Lindi Tempat Pemrosesan Akhir Sampah Muhsinun, Muhsinun; Littaqwa, Lalu Auliya Akraboe
Journal of Science and Technology: Alpha Vol. 2 No. 1 (2026): Journal of Science and Technology: Alpha, January 2026
Publisher : Lembaga Publikasi Ilmiah Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/alpha.v2i1.389

Abstract

This study evaluated the performance of an integrated electrochemical and activated carbon adsorption process for the treatment of landfill leachate. The initial leachate characteristics showed a COD of 4,850 mg/L, color intensity of 6,200 Pt Co, and ammonia concentration of 780 mg/L, with a low BOD/COD ratio indicating poor biodegradability. The electrochemical process operated at an optimum current density of 20 mA/cm² achieved 46.3 percent COD removal and 62.5 percent color reduction within 120 minutes, with an energy consumption of 18.4 kWh/kg COD removed. Standalone adsorption using 20 g/L of activated carbon reduced COD by 38.7 percent and color by 71.2 percent within 150 minutes; however, adsorption capacity declined by 35 percent after two cycles without regeneration. The integrated system operated at pH 6, current density of 20 mA/cm², and 120 minutes hydraulic retention time achieved 78.9 percent COD removal, 91.4 percent color removal, and 64.8 percent ammonia reduction. The specific energy consumption decreased to 12.6 kWh/kg COD removed, demonstrating improved energy efficiency compared to the electrochemical process alone. In situ electrochemical regeneration conducted for 30 minutes at 30 mA/cm² restored up to 87 percent of the initial adsorption capacity after three operational cycles. These results confirm a significant synergistic effect between electrochemical oxidation and activated carbon adsorption, leading to enhanced treatment efficiency and operational stability for complex landfill leachate.

Page 3 of 3 | Total Record : 25

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