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JOSAR (Journal of Students Academic Research)
Published by Universitas Islam Balitar Blitar
ISSN : 25028521     EISSN : 2503155     DOI : JOSAR (Journal of Students Academic Research)
Core Subject : Economy, Education, Engineering,
Economics, Econometrics & Finance Education Electrical & Electronics Engineering
JOSAR (Journal of Students Academic Research) is a national scientific journals are open to seeking innovation, creativity and novelty. The aim of this journal publication is to disseminate the conceptual thoughts or ideas and research results that have been achieved in the multidiscipline area First published in 2016 and regularly published two (2) times a year, in March and September.
Arjuna Subject : Umum - Umum
Articles 299 Documents
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The Influence of the Flipped Classroom Learning Model Flipbook Media Assistance for Financial Literacy in Elementary School Students Novitasari, Wulan; Setiawan, Angga; Yunitasari, Indah
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/josar.v10i2.4797

Abstract

Financial literacy is an important skill that needs to be possessed from an early age, including in elementary school students. This literacy includes understanding, managing, and making decisions related to finance. The results of observations at SDN 1 Karangsoko, SDN 1 Ngares, and SDN 3 Karangsoko showed that students still had difficulty understanding the concept of financial literacy, and teachers had not integrated it optimally into the learning process. This study aims to determine the effect of the flipped classroom learning model assisted by flipbook media on the financial literacy of fourth grade elementary school students. The method used is quantitative with a quasi-experimental design of the nonequivalent control group design type , involving the experimental class and the control class. The sampling technique used purposive sampling . The data collection instruments were multiple choice and descriptive tests, and data analysis used an independent sample t-test . The results showed that there was a significant difference between the financial literacy skills of students who learned using the flipped classroom model assisted by flipbook media compared to conventional learning, with a significance value of 0.000 <0.05. The flipped classroom model assisted by flipbook media has proven to be effective in improving students' financial literacy. This study recommends the application of this model in learning and suggests the use of flipbook media as an innovation to improve students' financial literacy skills in elementary schools.
The Effect Of Using Narrative Poster Learning Media On Historical Literacy Of Science Subjects Of Grade VI Elementary School Students Salim, Salsabila Maharani Aura; Setiawan, Angga; Yunitasari, Indah
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/josar.v10i2.4799

Abstract

Historical literacy is the ability to understand, analyze, and connect past eventswith the present context. Based on PISA 2018 data, Indonesian students&#39; readingliteracy scores are still below the international average, reflecting the low abilityto understand texts, including historical texts. The results of initial observations atSDN 1 Mlinjon, SDN 2 Mlinjon, and SDN 2 Suruh showed that the historicalliteracy of grade VI students was still relatively low. This study aims to determinethe effect of the use of narrative poster learning media on historical literacy in thescience subject of grade VI Elementary School students. This study uses aquantitative approach with a quasi-experimental design of the non-equivalentcontrol group design type. The subjects of the study consisted of 31 students fromthe experimental class (SDN 1 and SDN 2 Mlinjon) and 23 students from thecontrol class (SDN 2 Suruh), who were selected using a purposive samplingtechnique. Data collection was conducted through tests and interviews, while dataanalysis used independent sample t-test with the help of SPSS 25. The results ofthe analysis showed a significance value of 0.000 (&lt;0.05), which means that thereis a significant influence of the use of narrative poster media on improvingstudents&#39; historical literacy. Thus, narrative poster media can be an alternativeeffective learning media in improving the historical literacy of elementary schoolstudents. This study can also be a reference for the development of othernarrative-based learning media.
The Best Web-Based Set Top Box (STB) Determination System Using The Analytical Hierarchy Process (AHP) Method Sanjaya, Ivan Wisnu; Kusuma, Abdi Pandu; Febrinita, Filda
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/vw7r7a06

Abstract

The transition from analog to digital television requires the public to use set top box (STB) devices in order to receive digital broadcasts. However, many users struggle to choose an set top box that suits their location and specific needs. This study aims to determine the best location-based set top box recommendations using the Analytical Hierarchy Process (AHP) method. AHP was chosen because it is capable of systematically processing comparisons of criteria such as chipset, brand, price, and features. Primary data was collected through surveys and interviews with technicians in Blitar City, while secondary data was obtained from journals and technical documentation. The results of the study indicate that the brand criterion holds the highest weight, followed by chipset, features, and price. Set top box with Sunplus chipsets demonstrated the best performance in areas with weak signals. The web-based system was developed using JavaScript, and the calculations were supported by Python to verify accuracy. Therefore, the AHP method is highly effective in providing optimal set top box recommendations based on location and user needs, while also serving as a digital education tool for the community. This system is expected to assist both the public and technicians in improving the quality of digital TV signal reception as an alternative solution. Based on the research results, the developed web-based system provides convenience for users in determining the best set top box according to the required location. The website is equipped with location input forms, internet feature preferences, and detailed score calculation features for each set top box brand, with varying output values. This white box testing successfully validated the implementation of the Analytical Hierarchy Process (AHP) for calculating the score of the set top box (STB). The test confirmed that the scoring function accurately produced the correct total score of 0.6673 for the GX6605 STB. This successful execution demonstrates the reliability and correctness of the system's decision-making process.
Sensitivity Test of Clove Leaf Essential Oil (Syzygium aromaticum) Against Heterotrophic Bacteria Isolated from Food Products Filayani, Muhammad Iqbal; Jana, Farida Nur; Fitriyah
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/josar.v10i2.4940

Abstract

This study aimed to evaluate the antibacterial activity of clove leaf essential oil (Syzygium aromaticum) against heterotrophic bacteria isolated from food products. Clove leaves were collected from Malang Regency, Indonesia, and the essential oil was extracted via steam-water distillation. Bacterial isolates were obtained from food samples using serial dilution and pour plate techniques. Antibacterial activity was assessed using the agar diffusion method at three oil concentrations (50%, 75%, and 100%), with Amoxicillin trihydrate as the positive control and sterile distilled water as the negative control. The morphological characteristics of the isolates were documented, and inhibition zones were measured. Results indicated that inhibition strength increased with oil concentration up to 75%, with the largest numerical inhibition observed against isolate K2 at 100% concentration (31.3 mm), approaching the positive control’s efficacy. Statistical analyses confirmed that differences among treatments were significant (p < 0.001), except between 75% and 100% concentrations, suggesting a plateau in activity beyond the minimum inhibitory concentration. The findings highlight clove leaf essential oil’s potential as a natural antibacterial agent for food preservation, offering an environmentally sustainable alternative to synthetic antimicrobials. However, in vitro conditions may not fully represent performance in real food matrices, warranting further research on its application, stability, sensory effects, and synergistic combinations with other natural antimicrobials.
The Role of Lactobacillus plantarum in Enhancing the Physical Quality and pH of Water Hyacinth (Eichhornia crassipes) Silage Kunharjanti , Agustina Widyasworo; Wibowo, Agung Setya; Zulkarnain, Muhammad Aldi
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/qpn9fq44

Abstract

This research investigated the impact of supplementing water hyacinth (Eichhornia crassipes) silage with Lactiplantibacillus plantarum on its physical properties (pH, odor, texture, color, and fungal growth) as well as palatability. A Completely Randomized Design (CRD) was employed with three treatments and six replications: P0 (control, no L. plantarum), P1 (L. plantarum at 10⁵ CFU/ml), and P2 (L. plantarum at 10⁶ CFU/ml). The variables measured were pH, color, aroma, texture, fungal presence, and palatability. Findings revealed that L. plantarum supplementation significantly influenced (p < 0.05) the color of the silage, but had no significant effect on pH, aroma, texture, fungal development, or palatability. The mean pH values for P1 and P2 were 4.1 and 4.2, respectively, compared with 4.0 in P0. In terms of palatability, P2 produced the highest intake (201.5 g), followed by P1 (118.6 g), whereas P0 showed minimal consumption. Overall, the results suggest that higher concentrations of L. plantarum improve the visual quality of water hyacinth silage, but provide limited enhancement of other physical attributes and palatability.
The Effect of Project-Based Learning in the English for Tourism Course on the Improvement of Students’ Entrepreneurial Communication Skills Sutanti, Nita; Fauzi, Adin; Fikriya, Silmy
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/m6trzf37

Abstract

This study exmined the effect of Project-Based Learning (PjBL) on students entrepreneurial communication skill in the English for Tourism Course .This study was conducted in English Education Department, Balitar Islamic University Blitar involving the fifth semester students. A one-group pre-test post-test quasy experimental design was applied to measure the effect during the invention. The students were assigned to design, produce and present promotional videos highlighting on tourism destination in Blitar. The project required them to integrate language use with entrepreneurial communication such as persuasion, creativity and confidence in promoting their tourism product. Data were collected through pre-test and post-test speaking skill assessment using a rubric that measured fluency, pronunciation, grammar, vocabulary, content, interaction, presentation, media use, confidence, creativity, and teamwork., The additional data were acquired from classroom observation and questionnaires as project evaluation to attain students engagement and collaborative learning. The Findings showed a significant improvement in students speaking performance, with the mean score increasing from 69.06 in the pre-test to 86.23 in the post-test (t(22) = 14.78, p < 0.001) that indicate PjBL is an effective instructional strategy for enhancing students entrepreneurial communication, as it integrates language proficiency with authentic tourism promotion tasks. The study highlights the potential of PjBL not only to strengthen speaking skills but also to foster creativity, collaboration, and entrepreneurial awareness in English for Tourism education.
Sentiment Analysis Of Mie Gacoan Reviews In Blitar City On The Grab Application Using The Support Vector Machine Method Samudra, Bayu; Lestanti, Sri; Romadhona, Rizky Dwi
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/jwf5eb71

Abstract

This study aims to analyze customer review sentiments for Mie Gacoan restaurant in Blitar City through the Grab application using the Support Vector Machine (SVM) algorithm. Customer reviews are categorized into three sentiment classes: positive, negative, and neutral. And the total amount of data used is 991 data. The research process includes manual data collection, text preprocessing, weighting using the TF-IDF method, and classification with the SVM algorithm. Model performance is evaluated using a confusion matrix with precision, recall, and F1-score metrics. And for the testing of the algorithm method using Grid Search and Cross Validation. The results show that the linear kernel achieves the best performance with an F1-score of 0.4649. Positive sentiment dominates the reviews, while negative and neutral sentiments are less prevalent. This study demonstrates that SVM is effective for classifying sentiments in customer reviews and can assist restaurant managers in identifying areas for service improvement.
Comparative Study Of Monthly Electricity Consumption Clusterization Using K-Means and DBSCAN Putri Rochfiani; Chulkamdi, Mukh Taofik; Mawaddah, Udkhiati
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/rqvgbf18

Abstract

Menganalisis pola konsumsi listrik sangat penting untuk meningkatkan efisiensi distribusi energi dan mengidentifikasi anomali seperti lonjakan yang tidak biasa atau kemungkinan pencurian listrik. Penelitian ini menyajikan analisis komparatif dua algoritma klaster—K-Means dan DBSCAN—dalam mengklasifikasikan penggunaan listrik bulanan pelanggan PT PLN (Persero) Rayon Ngunut, yang mencakup Kecamatan Rejotangan, Ngunut, Kalidawir, dan Pucanglaban. Dataset tersebut mencakup catatan konsumsi dari bulan November dan Desember 2024. Algoritma K-Means, yang menggunakan pendekatan klaster berbasis centroid, bekerja efektif pada dataset yang seragam, sementara DBSCAN, sebuah metode berbasis kepadatan, lebih mampu mengenali outlier dan pembentukan klaster yang tidak sferis. Kinerja kedua algoritma dievaluasi menggunakan Akurasi, Mean Squared Error (MSE), Presisi, Recall, dan F1-Score. Hasil eksperimen menunjukkan bahwa K-Means mencapai akurasi 96%, MSE 0,0400, presisi 0,71, recall 1,00, dan skor F1 0,83. Sebaliknya, DBSCAN mencapai akurasi 76%, MSE 0,2400, presisi 0,29, recall 1,00, dan skor F1 0,45. Hasil ini menunjukkan bahwa K-Means menghasilkan klaster yang lebih kompak dan konsisten, sementara DBSCAN lebih unggul dalam mengidentifikasi anomali, dengan total mendeteksi 17 outlier. Akibatnya, K-Means dianggap lebih cocok untuk pengelompokan konsumsi yang stabil, sedangkan DBSCAN direkomendasikan untuk tujuan deteksi anomali. Temuan ini diharapkan dapat membantu PT PLN (Persero) dalam mengembangkan strategi berbasis data dan adaptif untuk manajemen energi yang lebih efisien.
Ethnobotanical data needs and their application in biology learning Sofiyana, Marinda Sari; Amarlita , Dhamas Mega; Ningrum, Pipit Mustika
JOSAR (Journal of Students Academic Research) Vol 10 No 2 (2025): September
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/etstnw87

Abstract

Ethnobotanical knowledge plays an important role in connecting biological concepts with local wisdom and contextual learning; however, its integration into formal biology education remains limited. This study aims to analyze the needs for ethnobotanical data among secondary school students and biology education students, as well as to examine its current application in biology learning materials. A mixed-methods approach was employed, involving questionnaires, semi-structured interviews, and document analysis. Questionnaire data were collected from secondary school students and biology education students to identify priority ethnobotanical data categories, including local plant names, scientific names, plant parts used, traditional functions, cultural values, and conservation aspects. Interview data were used to explore perceptions of usefulness and preferred data presentation formats, while document analysis examined the extent of ethnobotanical integration in textbooks, learning modules, and curriculum documents. The results indicate that both groups expressed high to very high levels of need for ethnobotanical data, with biology education students consistently reporting higher needs, particularly for scientific and systematically organized information. Interview findings revealed that ethnobotanical data supported conceptual understanding, relevance to local contexts, teaching preparation, and research activities, with a strong preference for structured and visual presentation formats. Document analysis showed that existing biology learning materials provide limited, fragmented, and unsystematic ethnobotanical content with weak alignment to learning objectives. These findings highlight a significant gap between learners’ needs and available learning resources. The study implies the necessity of developing structured, contextual, and locally based ethnobotanical learning materials to enhance biology learning and support sustainable education.

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