Universitas Ahmad Dahlan Journal
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PENERAPAN MODEL MATEMATIKA EKONOMI UNTUK PEMANFAATAN INOVASI PRODUK KREATIF “OMAH BALON KMB” BAGI UMKM MAGELANG
Full text linkPenelitian ini bertujuan untuk menerapkan model matematika ekonomi dalam rangka meningkatkan efisiensi produksi dan pendapatan usaha mikro, kecil, dan menengah (UMKM) “Omah Balon KMB” di Magelang. Usaha ini dikenal dengan produk-produk kreatif seperti buket, souvenir, dan dekorasi, yang mengalami tantangan berupa fluktuasi permintaan, keterbatasan sumber daya, dan biaya produksi yang bervariasi. Penelitian menggunakan pendekatan kuantitatif deskriptif dengan menerapkan model matematika ekonomi berupa fungsi pendapatan, biaya, dan laba, berdasarkan data riil produksi selama satu bulan. Hasil analisis menunjukkan bahwa beberapa produk memiliki kontribusi laba yang signifikan yaitu sebesar Rp863.000,00 setiap bulan. Produk yang berkontribusi memberikan laba yang cukup tinggi seperti buket bunga, souvenir bunga pot, dan dekorasi mobil. Model ini membantu pelaku usaha dalam merencanakan produksi secara efisien dan rasional sesuai keterbatasan yang ada. Asumsi yang digunakan dalam pemodelan ini yaitu permintaan diasumsikan stabil selama periode produksi, kapasitas produksi bersifat tetap, biaya produksi per unit produk konstan, harga jual tidak berubah, produk terdiri dari produk yang telah tersedia di toko dan dalam sisten pre-order, dan data yang diambil dalam kurun waktu satu bulan produksi. Dengan demikian, pemodelan matematika ekonomi terbukti menjadi alat yang efektif dalam optimalisasi keputusan produksi UMKM
The Phenomenon of Self-Harm Risky Behavior and Health Neglect Among Adolescent Girls in Padang City
Full text linkSelf-harm is a behavior of intentionally hurting oneself that often emerges among adolescents, particularly girls, as a coping mechanism for emotional and social pressures. This study aims to explore the characteristics of self-harm behavior among adolescents by examining four main aspects: overt self-harm, eating disorder, high lethal actions, and behaviors relating to medical issues. A total of 127 respondents participated in the study, with the majority aged 16–17 years (42.52%), predominantly Minang ethnic group (95.28%), most attending religious classes (74.02%), and mostly from complete family backgrounds (85.83%). Data were collected using self-report questionnaires and analyzed descriptively to identify the frequency, percentage, and category of self-harm indicators. The results indicate that overt self-harm behaviors such as intentionally injuring oneself, hitting the body, or burning the skin were mostly found at a low level, although a small portion reached the moderate category. In the eating disorder aspect, indicators such as fasting for 24 hours due to guilt, skipping meals for attention, and using laxatives as self-punishment were generally categorized as low, with only fasting behavior reaching moderate. Similarly, the high lethal aspect, including consuming excessive medication, ignoring dosage, and attempted suicide through wrist-cutting, was also categorized as low. Lastly, behaviors relating to medical issues, such as not treating wounds, ignoring medication when sick, or using unauthorized prescription drugs, were likewise predominantly in the low category. Overall, the findings reveal that although self-harm tendencies are present among adolescents, the majority are at a low level across all aspects, with only certain eating disorder and overt self-harm indicators reaching moderate levels. These results highlight the importance of early detection and preventive interventions to minimize the escalation of self-harm behaviors among adolescents
A literature review on sexual violence by authority figures and its psychological impact on women and children
Full text linkSexual violence perpetrated by authority figures such as teachers, lecturers, religious leaders, medical professionals, and law enforcement officers constitutes a severe violation of human rights with profound psychological consequences, particularly for women and children. This study employs a Systematic Literature Review (SLR) methodology to analyze 11 national and international journal articles published between 2020 and 2024. The aim of this review is to explore the dynamics of power relations, the psychological impact on survivors, barriers to recovery, and intervention strategies. Findings reveal that unequal power relations between perpetrators and victims significantly contribute to the occurrence of sexual violence and hinder the recovery process. Survivors frequently experience severe psychological symptoms, including post-traumatic stress disorder (PTSD), depression, dissociation, and developmental disturbances especially in children. Recovery barriers include societal stigma, limited legal support, and the normalization of the perpetrator's authority. Effective recovery strategies identified include Eye Movement Desensitization and Reprocessing (EMDR), Cognitive Behavioral Therapy (CBT), emotional support from family, and community-based approaches. This study highlights the urgent need for integrated, trauma-informed interventions and the strengthening of legal protection systems to break the cycle of sexual violence perpetrated by authority figures
Jurnal Review Literatur Review: Pemanfaatan dan Penggunaan Media Pembelajaran Interaktif dalam Pelajaran Matematika di Sekolah Dasar : Pemanfaatan dan Penggunaan Media Pembelajaran Interaktif dalam Pelajaran Matematika di Sekolah Dasar
No full textPembelajaran matematika di sekolah dasar menghadapi berbagai tantangan dan kesulitan berupa rendahnya minat belajar peserta didik, serta metode pengajaran yang digunakan terlalu monoton dan sangat tidak menarik. Review ini bertujuan untuk meninjau secara sistematis tentang penggunaan dan pemanfaatan media pembelajaran interaktif dalam pelajaran matematika di sekolah dasar. Metodologi yang digunakan yaitu tinjauan literatur sistematis (Systematic Licterature Review/SLR) dengan mengumpulkan dan mengevaluasi artikel-artikel jurnal terindek SINTA yang diterbitkan antara tahun 2020-2025 hasil tinjauan ini menunjukkan bahwa pengembangan media interaktif telah berkembang dengan pesat tidak hanya terbatas pada presentasi sederhana, tetapi juga mencakup integrasi audio, video animasi, ISPRING SUITE, Adobe Flash Player CC, Smart Apps Creator, Android Berbasis Problem Based Learning, Komik Digital, Audiovisual Powtoon, Adobe Flash Profesional, dan hingga 3D Metric Berbasis Augmented Reality (AR). Media-media ini, terbukti efektif dalam menyajikan materi seperti Bangun Dasar, Pecahan, dan materi lainnya. Efektivitas media interaktif dibuktikan melalui peningkatan rata-rata nilai siswa, validasi dari ahli media, materi, dan bahasa serta respon dari guru dan peserta didik.
Literature Review: Utilization and Use of Interactive Learning Media in Mathematics Lessons in Elementary Schools
Learning mathematics in elementary schools faces various challenges and difficulties in the form of low student interest in learning, and the teaching methods used are too monotonous and not very interesting. This review aims to systematically review the use and utilization of interactive learning media in mathematics lessons in elementary schools. The methodology used is a systematic literature review (SLR) by collecting and evaluating SINTA indexed journal articles published between 2020-2025. The results of this review show that the development of interactive media has grown rapidly not only limited to simple presentations, but also includes audio integration, animated videos, ISPRING SUITE, Adobe Flash Player CC, Smart Apps Creator, Android Based Problem Based Learning, Digital Comics, Powtoon Audiovisual, Adobe Flash Professional, and up to 3D Metric Based Augmented Reality (AR). These media have proven effective in presenting materials such as Basic Buildings, Fractions, and other materials. The effectiveness of interactive media is proven through an increase in the average student score, validation from media, material, and language experts as well as responses from teachers and students.
This is an open-access article under the CC–BY-SA license.
 
Juvenile Murderers: Is It the Impact of Dark Triad Personality or Lead Poisoning? A Comparative Study
Full text linkThis study contributes by integrating psychological and pharmacological perspectives in understanding juvenile murderers. This is a comparative study that compares DTP and Pb between juvenile murderers and non-criminal juveniles. The participants were 7 juvenile murderers and 7 non-criminal juveniles. Inductively coupled plasma optical emission spectroscopy was used to examine Pb levels in hair. A modified Paulhus and William DTP questionnaire was applied to all participants. Qualitative data used interview and drawing test on juvenile murderers. Quantitative data on murderous and non-criminal juveniles for DTP used T Test and Pb were analyzed with the Mann-Whitney U test. Correlation between DTP and Pb used Pearson Correlation. Qualitative analyzed used thematic content analysis. Results revealed that there are has significant differences on Pb between JM and NCM. Pb levels in juvenile murderers were higher than those in noncriminal ones. There is no difference between juvenile murderers and noncriminal ones, according to DTP. However, descriptive statistics revealed that adolescent murderers typically had higher DTP than noncriminal ones. Based on the structural interview and psychological drawing test, juvenile murderers tend to have DTP characteristics. Spearman correlation showed that there was no correlation between Pb and DTP noncriminal adolescents. Further research is needed with more precise and comprehensive methods to find out the causes of teenagers committing murder, one of them is qualitative approach. Integration with pharmaceuticals remains necessary because juvenile murder cannot be explained solely by a psychological approach
Analisis Faktor-Faktor Yang Memengaruhi BBLR Di Provinsi Jawa Timur Dengan Metode Regresi Binomial Negatif
Full text linkBerat badan lahir rendah (BBLR) ialah keadaan dimana bayi lahir memiliki berat kurang dari 2,500 gram, yang menjadi salah satu penyebab utama kematian neonatal dan berdampak jangka panjang pada kesehatan, tumbuh kembang, serta kualitas hidup bayi. Penelitian ini memiliki tujuan untuk menganalisis faktor-faktor yang memengaruhi jumlah BBLR di Provinsi Jawa Timur tahun 2024. Data penelitian diperoleh dari Dinas Kesehatan Provinsi Jawa Timur tahun 2024, dengan sampel seluruh 38 kabupaten/kota di Jawa Timur. Variabel dependen yang dianalisis adalah jumlah kasus BBLR, dengan variabel independen meliputi persentase ibu hamil mengonsumsi tablet tambah darah (TTD), persentase ibu hamil dengan kurang energi kronis (KEK), serta jumlah ibu hamil yang mengalami preeklampsia. Metode yang digunakan adalah regresi binomial negatif karena data berbentuk diskrit dan menunjukkan indikasi overdispersi. Hasil penelitian menunjukkan bahwa secara simultan ketiga variabel independen berpengaruh signifikan pada jumlah BBLR (p-value = 0,044), tetapi secara parsial hanya variabel jumlah ibu hamil dengan preeklampsia yang berpengaruh signifikan (p-value = 0,015)
Formulation and release testing of mecobalamin in gelatin capsule derived from striped Snakehead (Channa striata)
Full text linkCapsules are medicinal preparations wrapped in hard or soft capsule shells. The material for making capsule shells is gelatin obtained from partial hydrolysis of animal skin or bones. One source of gelatin that can be used as a basic material for forming capsule shells is snakehead fish skin. This study aimed to produce capsule shells from snakehead skin, varying the gelatin concentration in the capsule shells, and to assess the drug release properties. The evaluation of the capsule shells included measurements of length, diameter, thickness, weight, volume, disintegration time, swelling degree, and mecobalamin release using a dissolution apparatus in a simulated gastric fluid medium, with mecobalamin levels measured by UV spectrophotometry. The results showed that the snakehead capsule displayed good physical properties. The best swelling degree was observed in formula 2, with a value of 24.59%, which is close to the 27.58% swelling degree of commercial capsules (mecobalamin) at the 10-min. The mecobalamin release test indicated that the capsules from formula 2 released 30.40% of the drug at the 30-min when tested at 278 nm, compared to 33.50% from commercial capsules. Testing at a wavelength of 352 nm for formula 2 was 29.25% compared to commercial mecobalamin capsules at 34.67%. These findings highlight the promising utility of gelatin from snakehead skin in the formulation of effective drug delivery systems
Rancang Bangun dan Pengembangan Sistem Penjadwalan Sholat Digital Berbasis Internet of Things
Full text linkPenelitian ini membahas rancang bangun dan pengembangan sistem penjadwalan sholat digital berbasis Internet of Things (IoT) untuk meningkatkan keandalan dan fleksibilitas sistem yang telah digunakan sebelumnya. Sistem lama yang dibangun menggunakan Arduino Mega2560, RTC DS1307 dan panel 7-segment dengan driver ULN2003 memiliki keterbatasan, yaitu tidak tersedianya sinkronisasi waktu otomatis serta pengaturan jeda iqomah yang masih dilakukan secara manual. Dalam penelitian ini, pengembangan dilakukan dengan menambahkan modul ESP32 yang terhubung ke jaringan Wi-Fi untuk melakukan sinkronisasi waktu secara otomatis melalui server Network Time Protocol (NTP). Modul ini juga menyediakan antarmuka berbasis web yang dapat diakses melalui smartphone, sehingga pengaturan jadwal dan jeda iqomah menjadi lebih fleksibel. Komunikasi data antara ESP32 dan Arduino Mega2560 dilakukan melalui protokol Universal Asynchronous Receiver Transmitter (UART) yang terbukti stabil selama pengujian. Hasil pengujian menunjukkan bahwa sistem mampu menjaga deviasi waktu di bawah satu detik dan pengaturan jadwal melalui antarmuka web dapat dilakukan dalam waktu kurang dari dua detik. Sistem ini dinilai lebih andal, efisien, dan sesuai dengan kebutuhan operasional masjid modern, serta mampu menggantikan sistem lama yang kurang fleksibel dalam pengelolaan waktu ibadah
Workplace incivility and burnout among Indonesian Migrant workers in South Korea
Full text linkWorkplace incivility has emerged as a significant psychosocial hazard in various occupational settings. Migrant workers are particularly vulnerable due to linguistic, cultural, and structural challenges. This study examines the relationship between workplace incivility and burnout among Indonesian migrant workers in South Korea. Data were collected from 276 respondents through purposive and snowball sampling, using a quantitative survey design. The Indonesian adaptation of the Workplace Incivility Scale and the Maslach–Trisni Burnout Inventory were employed to measure incivility and burnout. Descriptive analysis indicated that a substantial proportion of participants reported moderate to high levels of both variables. Simple linear regression analysis revealed that workplace incivility significantly and positively predicted burnout levels, accounting for a substantial proportion of the variance (R²=0.879). Pearson correlation analysis further showed that instigated incivility had the strongest association with emotional exhaustion, while supervisor and coworker incivility were significantly correlated with all burnout dimensions. An independent t-test revealed that respondents with children reported higher burnout levels, whereas marital status, age, and prior overseas experience were not significant predictors of burnout. These results demonstrate that interpersonal mistreatment meaningfully contributes to the psychological strain among Indonesian migrant workers. The findings extend empirical evidence on the incivility–burnout link to a new cultural context and highlight the need for transnational labor policies, particularly through collaboration between the Kementerian Pelindungan Pekerja Migran Indonesia (KP2MI) and the Human Resources Development Service of Korea (HRD Korea) to incorporate psychosocial protection, respectful communication, and mental health support into the Employment Permit System (EPS)
Air Quality and COVID-19 Patient Conditions in Jakarta: A Comparative Analysis of Classification Algorithms
Full text linkThe COVID-19 pandemic has become a global challenge, with environmental factors such as air quality contributing to disease severity. This study analyzes the relationship between air pollution parameters (PM2.5, PM10, NO2, SO2, CO, and O3) and COVID-19 patient conditions in Jakarta, categorized into three groups: positive, recovered, and deceased. A comparative evaluation was conducted using five classification algorithms: Na¨ıve Bayes, Random Forest, k-Nearest Neighbors (kNN), Decision Tree, and Support Vector Machine (SVM). The results show that kNN achieved the highest accuracy of 80.71%, while Na¨ıve Bayes obtained the highest recall of 91.83% and a precision of 80.75%. This study contributes by evaluating the effectiveness of classification techniques in mapping the impact of air quality on patient conditions and by identifying the most accurate predictive model. The findings suggest that classification methods can serve as reliable predictive tools to assess the health impacts of air pollution on the population