Universitas Ahmad Dahlan Journal
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The relationship between Islamic creed and social skills and students’ emotional well-being
Full text linkThis study investigates the extent to which Islamic creed (ʿAqīdah) and social skills are associated with students’ emotional well-being. Utilizing a quantitative correlational design, the study involved 197 students aged 15–19 years from a state-funded Islamic secondary school. Participants were selected through cluster random sampling. Three validated instruments were employed: the Emotional Well-Being Scale based on Keyes’ conceptual framework (α = 0.803), the Islamic Creed Scale adapted from Al-Banna’s model (α = 0.893), and the RECS Social Skills Scale developed by Mantzouranis et al. (α = 0.896). Data were analyzed using multiple linear regression. The results revealed that Islamic creed and social skills jointly demonstrated a significant positive relationship with emotional well-being (p = 0.006). Further analysis showed that Islamic creed independently had a significant positive association with emotional well-being (p = 0.005), whereas social skills did not show a statistically significant effect (p = 0.142). These findings highlight the central role of religious belief in supporting adolescents' emotional well-being within faith-based educational contexts
Jalur Terpendek DAMRI Koridor 5 Menggunakan Algoritma Koloni Semut
Full text linkDAMRI merupakan salah satu sarana transportasi umum yang ada di Indonesia. Di Kota Bandung, DAMRI memiliki 5 koridor yang berbeda. Salah satu rutenya yaitu, rute koridor 5 Dipatiukur – Jatinangor. DAMRI menjadi salah satu pilihan transportasi umum yang digunakan oleh masyarakat karena harganya yang ekonomis dan melewati jalur yang seringkali digunakan oleh masyarakat, sehingga DAMRI menjadi pilihan yang tepat untuk digunakan oleh masyarakat umum. Pada umumnya orang akan memilih menggunakan transportasi umum yang efisien dalam segi waktu ataupun biaya. Hal itu dipengaruhi oleh jalur yang dilalui. Untuk dapat mengefisienkan waktu dan juga biaya maka diperlukan pencarian jalur terpendek. Algoritma Koloni Semut merupakan salah satu metode yang dapat digunakan dalam pencarian jalur terpendek. Algoritma ini terinspirasi cara kerja koloni semut dalam mencari jalur terpendek untuk mencari makan. Dimana semut akan mengeluarkan hormon feromon (jejak kaki) yang akan diikuti oleh semut lainnya. Ketika koloni semut memilih jalur yang jauh makan hormon feromon yang tidak bisa bertahan lama itu akan hilang dan semut lainnya akan kehilangan jejak. Sehingga mereka memilih jalur terpendek agar semut lainnya masih bisa mencium hormon feromon dari semut sebelumnya
Sistem Penjadwalan Perkuliahan Berbasis Web menggunakan Algoritma Genetika di UNISA Yogyakarta
Full text linkPenjadwalan perkuliahan merupakan komponen penting dalam manajemen akademik perguruan tinggi. Proses penyusunan jadwal secara manual sering menimbulkan permasalahan seperti bentrok waktu, keterbatasan ruang, serta ketidakseimbangan distribusi jadwal dosen dan mahasiswa. Penelitian ini bertujuan mengembangkan sistem penjadwalan perkuliahan berbasis web menggunakan framework Laravel dengan penerapan Algoritma Genetika untuk optimasi penentuan jadwal. Metode yang digunakan meliputi pengumpulan data melalui observasi, wawancara, dan studi pustaka, serta penerapan tahapan algoritma genetika seperti encoding, pembentukan populasi, fitness function, seleksi, crossover, dan mutasi. Sistem diuji menggunakan metode black box testing untuk menilai fungsionalitasnya. Hasil pengujian menunjukkan bahwa sistem mampu menghasilkan jadwal perkuliahan yang optimal, mengurangi bentrok jadwal maupun ruangan, serta mencapai tingkat akurasi fungsional 100%. Dengan demikian, penerapan Algoritma Genetika terbukti efektif dalam mengoptimalkan penjadwalan perkuliahan secara otomatis di lingkungan akademik
Analisis Komparatif Metode Ward & Peppard dan Anita Cassidy untuk Perencanaan SI/TI
Full text linkTransformasi digital mendorong organisasi untuk menyesuaikan strategi bisnis dengan pemanfaatan teknologi informasi (TI) secara terarah. Dalam konteks tersebut, perencanaan strategis sistem informasi dan teknologi informasi (SI/TI) menjadi elemen penting dalam mencapai keselarasan antara tujuan bisnis dan inisiatif digital. Penelitian ini bertujuan untuk menganalisis secara komparatif dua metodologi yang banyak digunakan, yaitu Ward & Peppard dan Anita Cassidy, melalui pendekatan Systematic Literature Review (SLR) dengan kerangka kerja PRISMA terhadap 30 artikel terpilih dari database Google Scholar, IEEE Xplore, SpringerLink, Garuda, dan SINTA. Hasil analisis menunjukkan bahwa metode Ward & Peppard unggul dalam analisis strategis internal-eksternal dan pemetaan kondisi organisasi, sedangkan metode Anita Cassidy lebih menekankan pada tahapan implementatif melalui siklus Visioning, Analysis, Direction, dan Recommendation. Kedua metodologi dinilai saling melengkapi, Ward & Peppard menyediakan dasar analitis yang kuat, sementara Anita Cassidy memperkuat aspek pelaksanaan dan roadmap digitalisasi. Tren penelitian terbaru menunjukkan pergeseran menuju pendekatan kombinatif dan adaptif yang mengintegrasikan kekuatan kedua metodologi tersebut untuk mendukung transformasi digital yang berkelanjutan. Kajian ini merekomendasikan pengembangan model hibrida Ward–Cassidy sebagai kerangka konseptual baru bagi organisasi publik, pendidikan, dan bisnis dalam merancang strategi SI/TI di era industri 4.0 dan society 5.0
Color Image Denoising Methods: A Laconic Review
Full text linkColor image denoising is an essential process in image processing, intending to remove noise from images while preserving the important image details, for instance, edges, resolution, and accuracy. This paper presents an experiment-based review of the recent methods of color image denoising algorithms, focusing on their strengths, limitations, complexity, findings, accuracy, and comparative performance. Therefore, eight methods in color image denoising with different concepts were reviewed and evaluated under a reliable experimental environment. The evaluation was conducted using a dataset collected from three different sources, such as a professional DSLR camera, various mobile devices, and the MIT-Adobe database, tested under different real-world noise conditions. The reviewed methods are assessed by three preceding metrics were selected as no-reference metrics to evaluate real color images where clean reference images are unavailable: fast image sharpness estimation (FISH), no-reference structure similarity (NRSS), sparsity, and dominant-orientation quality index (SDQI), objectively, along with subjective visual analysis. The results demonstrate that the Total Variation with Split Bregman (TVSB) algorithm achieved the highest performance and exceeded the other methods. Reviewed methods showed competitive results in fine structure, details, and preserving edges. Additionally, the study discusses future recommendations for improving the effectiveness of these algorithms. Finally, this research is carried out systematically and empirically and focuses on the merits and demerits of their performance. It provides stepwise guidance on how to systematically target a particular approach in the color image denoising process, which highlights the practical and theoretical disparity. Moreover, it serves as a rich and source for scholars intending to develop algorithms in this domain.
Gastroprotective Effect of Chitosan- Based Formulation with Chromolaena odorata L. and Peperomia pellucida L. Extracts in Ethanol-Induced Gastric Injury in Rats
Full text linkGastroprotection refers to the effect of compounds that protect the gastric mucosa. Peperomia pellucida L. and Chromolaena odorata L. have demonstrated gastroprotective activities. Chromolaena odorata L., in particular, shows inhibition of gastric mucosal damage due to the presence of secondary metabolites such as flavonoids, phenolics, and tannins. Chitosan is a drug carrier that enhances drug bioavailability and allows pharmacological effects to be achieved at lower doses. This study aims to evaluate the gastroprotective activity of chitosan-based formulations containing Peperomia pellucida L. and Chromolaena odorata L. leaf extracts in rats. The contribution of this research lies in demonstrating the synergistic potential of medicinal plant extracts with chitosan as a delivery system, thereby providing a safer, more effective, and innovative therapeutic strategy for gastric ulcer management. Chitosan formulations containing Peperomia pellucida L. and Chromolaena odorata L. extracts were prepared and tested on male rats. The rats were divided into seven groups: Group I (normal control), Group II (negative control), Group III (positive control, treated with sucralfate), Groups IV and V (treated with chitosan-Chromolaena odorata formulations at doses of 100 and 200 mg/kg BW), and Groups VI and VII (treated with chitosan-Peperomia pellucida formulations at doses of 100 and 200 mg/kg BW). Treatments were administered orally for 14 days. On day 14, one hour after the final treatment, all groups except the normal group received oral absolute ethanol at a dose of 5 mL/kg BW to induce gastric injury. Gastric ulcer index, protection ratio, and histopathological changes were evaluated. The ulcer index values for the negative control, positive control, and treatment groups with doses of 100, 200, and 400 mg/kg BW were 4.89, 0.89, 0.33, 0.11, 1.00, and 0.78, respectively. The chitosan-based formulations containing Chromolaena odorata L. and Peperomia pellucida L. extracts demonstrated significant gastroprotective effects in ethanol-induced gastric injury in rats
Optimization of Halal Capsule Shell Combination of Amylopectin of Cassava (Manihot esculenta) Pell and Caragenan of Euchema cottoni
Full text linkGelatin, a primary material for capsule shells, is predominantly sourced from pigs, raising significant concerns regarding its halal status for Muslim consumers. Therefore, identifying halal and sustainable alternatives to gelatin is crucial for the pharmaceutical industry. This study aimed to formulate and evaluate halal capsule shell preparations combining amylopectin from cassava (Manihot esculenta) peel starch and carrageenan from Euchema cottoni. The research utilized an experimental quantitative design with five formulations (F1–F5) based on varying amylopectin: carrageenan concentrations, namely 0.5%:3% (F1), 1%:3% (F2), 1.5%:3% (F3), 0%:3% (F4), and 3%:0% (F5). The capsule shells were assessed through specification tests, water content, ash content, and disintegration time. Data were analyzed using one-way ANOVA in SPSS version 26.0 at a 95% confidence level. The results showed that all formulations met the standards for water content (20–60%), ash content (<5%), and disintegration time (<30 minutes) based on PT. Kapsulindo Indonesia and the Indonesian Pharmacopoeia. However, none of the formulations fully met the specifications for capsule body diameter, cap diameter, and total length, primarily due to manual molding limitations. Among the five formulations, F3 demonstrated the closest conformity to standard physical parameters. Statistical analysis indicated that variations in the concentration of cassava peel starch and Euchema cottoni carrageenan significantly influenced capsule shell specifications, moisture content, and disintegration time (p<0.05), while having no significant effect on ash content (p>0.05). In conclusion, the combination of cassava peel amylopectin and Euchema cottoni carrageenan shows promising potential as a halal and eco-friendly alternative to gelatin-based capsule shells. Further optimization using automated molding systems is recommended to achieve standardized dimensions for commercial application
Eco-pedagogy in action: transforming primary education for sustainability
No full textThis study explores the role of primary school teachers in integrating sustainability values into education within an ecologically vulnerable context. It examines how teachers in Sorong City, Southwest Papua, act as agents of change through eco-pedagogical practices, despite facing challenges such as limited training and systemic support. Employing a qualitative case study approach, data were collected through observations, interviews, and document analysis. Findings reveal a gap between teachers' strong ecological awareness rooted in local experiences and their limited understanding of formal sustainability frameworks like the SDGs. While sporadic efforts to integrate environmental themes exist, a systematic, curriculum-aligned approach is lacking. The study highlights the potential for participatory eco-pedagogy to engage students and emphasizes the need for contextualized teacher training and curriculum reform. This research contributes a contextualized pedagogical framework for integrating sustainability values in similar settings globally, advocating for a shift from individual initiatives to structured, reflective, and sustainable educational strategies
Orphan works: An examination of Indonesian and Malaysian copyright law
Full text linkIntroduction to the Problem: This paper reports findings from research on orphan works in Indonesia and Malaysia. "Orphan works" are copyright-protected works whose copyright holders cannot be contacted or identified by prospective users. Permission to use is essential under the copyright law, but it cannot be obtained in the orphan works context. Presently, there have been no recorded cases of orphan works in either jurisdiction. This situation is further exacerbated by the lack of policies and laws in Indonesia and Malaysia regarding orphan works.
Purpose/Study Objectives: On the above basis, this study sought to address the following research questions: (i) What is the current legal treatment to the issue of orphan works in Indonesia and Malaysia? and (ii) How can access to and exploitation of orphan works be legally authorised in Indonesia and Malaysia?
Design/Methodology/Approach: The research design was exploratory as this study aimed to examine the current legal treatment of orphan works in light of both jurisdictions' copyright statutes. The doctrinal analysis, as part of normative legal research, was used to answer the first research question by examining Indonesia’s Law Number 28 of 2014 and Malaysia’s Copyright Act 1987. The literature-based research was employed to answer the second research question by extracting information from secondary sources such as reports, textbooks, and journal articles.
Findings: This study discovered that Indonesia and Malaysia's existing laws are insufficient to support potential users in exploiting the orphan works. Specifically in Malaysia, the orphan works scenario might be addressed by Section 31 of the Copyright Act 1987, but further improvements could be made to this provision to expand its scope and application. Following that, this study made numerous strategic proposals, including defining a policy for the use of orphan works, establishing a statutory definition of orphan works, and developing an orphan works licensing scheme.
Paper Type: Research Articl
The effectiveness of the problem-based learning (PBL) model assisted by hypercontent e-books in improving students' critical thinking
Full text linkCritical thinking has become a competency standard for primary and secondary education graduates. However, the quality of critical thinking among Indonesian students remains relatively low. Efforts are needed to enhance students' critical thinking skills. One such effort is implementing the problem-based learning (PBL) model assisted by hypercontent e-books based on cognitive conflict. This study aims to determine the effectiveness of the PBL model assisted by hypercontent e-books based on cognitive conflict in improving students' critical thinking abilities. The research uses a quasi-experimental method and was conducted at a high school in Jakarta. The sample consisted of 64 students, with 32 students in the experimental group and 32 students in the control group. The sample was selected using multistage random sampling. The results of the study show a significant improvement in critical thinking skills in the experimental group compared to the control group, with an average N-Gain of 0.61 for the experimental class, which is higher than the control class (0.45), with the effectiveness of learning falling within a range of 0.30-0.70, which is categorized as moderate. These results indicate the effectiveness of the PBL model assisted by hypercontent e-books based on cognitive conflict in enhancing students' critical thinking skills. The use of the PBL model assisted by hypercontent e-books based on cognitive conflict can be an innovative alternative in learning to improve students' critical thinking abilities