Abstract:Penelitian ini mengkaji bentuk-bentuk kesalahan beserta faktor penyebabnya yang dialami siswa kelas VIII SMP ketika mengidentifikasi sisi, rusuk, dan titik sudut pada bangun kubus. Desain kualitatif deskriptif dipilih agar…
ar respons siswa dapat ditelaah secara mendalam tanpa adanya perlakuan atau manipulasi terhadap variabel penelitian. Sebanyak 30 siswa kelas VIII dijadikan subjek melalui teknik purposive sampling, dan 6 di antaranya dipilih untuk sesi wawancara semi terstruktur yang mewakili tiga tingkat kemampuan akademik, yaitu tinggi, sedang, dan rendah. Pengumpulan data dilakukan melalui tes diagnostik tertulis, wawancara yang direkam, dan dokumentasi. Analisis data mengacu pada model interaktif Miles dan Huberman yang terdiri atas reduksi data, penyajian data, dan penarikan kesimpulan, dengan triangulasi metode untuk menjaga keterpercayaan temuan. Hasil penelitian menunjukkan bahwa 46,67% siswa melakukan setidaknya satu kesalahan dalam mengidentifikasi sisi kubus, 63,33% siswa melakukan kesalahan terkait rusuk, dan 36,67% siswa mengalami kesulitan dalam mengidentifikasi titik sudut secara tepat. Tiga kategori kesalahan yang dominan teridentifikasi, yaitu kesalahan konsep berupa kekeliruan mengidentifikasi unsur geometris, kesalahan visualisasi yang berkaitan dengan kesalahan membaca representasi tiga dimensi, dan kesalahan prosedural dalam menghitung komponen geometris secara sistematis. Faktor penyebab meliputi dimensi internal, terutama lemahnya pemahaman konsep dan rendahnya kemampuan penalaran spasial, serta dimensi eksternal seperti minimnya media pembelajaran dan dominasi strategi mengajar berbasis ceramah. Temuan ini menegaskan perlunya pendekatan pembelajaran geometri bangun ruang yang lebih eksploratif, konstruktivis, dan berbasis media di jenjang SMP.
This study investigates the types and underlying causes of errors made by eighth-grade junior high school students when identifying the faces, edges, and vertices of a cube. A qualitative descriptive research design was employed to examine students' responses in depth without manipulating any research variables. Thirty students from the eighth grade were selected through purposive sampling, and six of them participated in semi-structured interview sessions representing three levels of academic ability: high, moderate, and low. Data were gathered using written diagnostic tests, audio-recorded interviews, and documentation. Analysis followed the interactive model proposed by Miles and Huberman, encompassing data reduction, data display, and conclusion drawing, with methodological triangulation applied to ensure the trustworthiness of findings. Results indicated that 46.67% of students committed at least one error in identifying cube faces, 63.33% made errors related to edges, and 36.67% had difficulty identifying vertices correctly. Three dominant error categories were identified: conceptual errors, visualization errors, and procedural errors. Causal factors encompassed internal dimensions, particularly weak conceptual understanding and limited spatial reasoning ability, and external dimensions, including insufficient instructional media and lecture-based teaching strategies.
Abstract:Abstract: Clean water availability plays an important role in supporting sanitation, environmental health, and educational activities in schools. SMP Negeri 1 Cangkringan has a natural spring water source containing iron…
(Fe) levels of 1–2 mg/L, exceeding the water quality standard stipulated in Indonesian Ministry of Health Regulation No. 32 of 2017. This community service program aimed to improve water quality through the implementation of a simple treatment system based on aeration, sedimentation, and filtration, while also supporting the Adiwiyata School Program. The implementation method applied a participatory approach involving teachers, students, and educational staff through several stages, including identification of water quality problems, initial water quality testing, design of aeration and filtration systems, installation of the water treatment unit, post-treatment water quality testing, as well as monitoring and evaluation of program sustainability. The filtration system utilized gravel, silica sand, activated carbon, and zeolite stone as filter media. Water quality testing was conducted before and after treatment to evaluate the effectiveness of Fe reduction. The results showed that the aeration and filtration system successfully reduced Fe concentrations from 1–2 mg/L to 0.5–1 mg/L with an efficiency of 50–75%, thereby meeting the hygiene and sanitation water quality standards. In addition, the program enhanced environmental awareness among school members through practice-based learning activities.
Keywords: aeration; community service; filtration; iron (Fe); spring water quality; sustainability education.
Abstrak: Ketersediaan air bersih memiliki peran penting dalam mendukung sanitasi, kesehatan lingkungan, dan aktivitas pendidikan di sekolah. SMP Negeri 1 Cangkringan, Yogyakarta memiliki sumber mata air alami dengan kandungan zat besi (Fe) sebesar 1–2 mg/L yang melebihi baku mutu berdasarkan Permenkes RI No. 32 Tahun 2017. Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan kualitas air melalui penerapan sistem pengolahan sederhana berbasis aerasi, sedimentasi, dan filtrasi sekaligus mendukung program Sekolah Adiwiyata. Metode pelaksanaan menggunakan pendekatan partisipatif dengan melibatkan guru, siswa, dan tenaga kependidikan melalui tahapan identifikasi permasalahan kualitas air, pengujian awal kualitas air, perancangan sistem aerasi dan filtrasi, implementasi instalasi pengolahan air, pengujian kualitas air pasca pengolahan, serta monitoring dan evaluasi keberlanjutan program. Sistem filtrasi menggunakan media kerikil, pasir silika, arang aktif, dan batu zeolit. Pengujian kualitas air dilakukan sebelum dan sesudah pengolahan untuk mengetahui efektivitas penurunan kadar Fe. Hasil kegiatan menunjukkan bahwa sistem aerasi dan filtrasi mampu menurunkan kadar Fe dari 1–2 mg/L menjadi 0,5–1 mg/L dengan efisiensi sebesar 50–75%, sehingga memenuhi baku mutu air higiene sanitasi. Program ini juga meningkatkan kesadaran lingkungan warga sekolah melalui pembelajaran berbasis praktik.
Kata kunci: aerasi; filtrasi; pengabdian kepada masyarakat; peningkatan kualitas air; Sekolah Adiwiyata; zat besi (Fe).
Abstract:Abstract: Household food waste remains a major environmental challenge due to its high volume and potential to cause pollution when not properly managed. This community service program aimed to improve community knowledge,…
e, attitudes, and skills in converting household food waste into liquid organic fertilizer. The activity was conducted on 11 October 2025 in Waru Village, Parung District, Bogor Regency, involving 50 participants from the Women Farmers Group, youth organizations, housewives, and local residents. The program included an initial survey, socialization, practical training, mentoring, and evaluation through observation, interviews, pre-tests, post-tests, and documentation. The results showed improvements in all evaluated aspects. The average knowledge score increased from 3.33 to 4.33, the attitude score from 3.70 to 4.57, and the skills score from 3.23 to 4.23. These findings indicate that socialization, interactive discussion, hands-on practice, and mentoring were effective in strengthening community capacity to process household organic waste into useful products and to support sustainable waste reduction.
Keywords: community service; food waste; liquid organic fertilizer, waru village
Abstrak: Permasalahan sampah makanan rumah tangga menjadi tantangan penting dalam pengelolaan lingkungan karena volumenya tinggi dan berpotensi menimbulkan pencemaran. Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pengetahuan, sikap, dan keterampilan masyarakat dalam memanfaatkan sampah makanan rumah tangga menjadi pupuk organik cair (POC). Kegiatan dilaksanakan pada 11 Oktober 2025 di Desa Waru, Kecamatan Parung, Kabupaten Bogor, dengan melibatkan 50 peserta dari Kelompok Wanita Tani (KWT), Karang Taruna, ibu rumah tangga, dan warga sekitar. Metode kegiatan meliputi survei awal, sosialisasi, pelatihan praktik, pendampingan, serta evaluasi melalui observasi, wawancara, pre-test, post-test, dan dokumentasi. Hasil menunjukkan peningkatan pada seluruh aspek evaluasi. Rata-rata skor pengetahuan meningkat dari 3,33 menjadi 4,33, sikap dari 3,70 menjadi 4,57, dan keterampilan dari 3,23 menjadi 4,23. Temuan ini menunjukkan bahwa sosialisasi, diskusi interaktif, praktik langsung, dan pendampingan efektif meningkatkan kapasitas masyarakat dalam mengelola sampah organik rumah tangga menjadi produk yang bermanfaat serta mendukung pengurangan sampah secara berkelanjutan.
Kata kunci: desa waru; pengabdian masyarakat; pupuk organik cair; sampah makanan
Abstract:Abstract: Preeclampsia is one of the leading causes of maternal mortality in East Lombok Regency. In 2023, 2,689 cases of preeclampsia were recorded among 108,035 pregnant women. Limited competence of midwives in early detection,…
etection, midwifery care, and preventive strategies remains a major challenge. This community service program aimed to improve midwives’ knowledge and skills through a workshop consisting of seminars and case-based learning (CBL). The activity was conducted on August 25, 2025, at the East Lombok District Health Office Hall, involving 35 midwives from 35 primary health centers (34 respondents were analyzed as one participant did not complete the pre- and post-tests). The workshop covered preeclampsia screening, midwifery care, MgSO₄ administration, and the use of local natural resources as preventive strategies. Evaluation using pre- and post-tests showed a significant increase in the mean score from 78.23 to 94.85, with an average improvement of 16.62 points. Notably, 44.1% of participants achieved a perfect score of 100. These findings confirm that interactive and practical workshop approaches effectively enhance midwives’ competencies. Therefore, this program contributes to strengthening primary health care services and supporting maternal mortality reduction efforts in East Lombok.
Keywords: early detection; maternal mortality; midwives competence; preeclampsia; primary health care
Abstrak: Preeklampsia merupakan salah satu penyebab utama tingginya angka kematian ibu di Kabupaten Lombok Timur. Data tahun 2023 menunjukkan terdapat 2.689 kasus preeklampsia dari 108.035 ibu hamil. Keterbatasan kompetensi bidan dalam deteksi dini, asuhan kebidanan, dan pemanfaatan strategi preventif menjadi tantangan utama. Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pengetahuan dan keterampilan bidan melalui workshop yang terdiri dari seminar dan praktik berbasis kasus (Case Based Learning/CBL). Kegiatan dilaksanakan pada 25 Agustus 2025 di Aula Dinas Kesehatan Lombok Timur, dengan peserta 35 bidan dari 35 Puskesmas. Materi workshop mencakup skrining preeklampsia, asuhan kebidanan, pemberian MgSO₄, serta pemanfaatan bahan alam lokal sebagai strategi preventif. Evaluasi menggunakan pre-test dan post-test menunjukkan peningkatan signifikan skor rata-rata dari 78,23 menjadi 94,85, dengan rata-rata peningkatan sebesar 16,62 poin. Sebanyak 44,1% peserta mencapai skor sempurna 100. Hasil ini membuktikan bahwa workshop interaktif dan aplikatif efektif meningkatkan kompetensi bidan. Dengan demikian, program ini berkontribusi pada penguatan layanan primer dan upaya penurunan angka kematian ibu di Lombok Timur.
Kata kunci: angka kematian ibu; deteksi dini; kompetensi bidan; pelayanan kesehatan primer; preeclampsia
Abstract:Abstract: This community service activity was motivated by the drying problems of emping melinjo in Perbaungan District, Serdang Bedagai Regency, which still relies on sunlight. This traditional method has many limitations…
ns as it depends on weather conditions, requires 2–3 days, and produces products that are less hygienic and inconsistent in quality. The purpose of this activity is to provide a solution through mentoring and training in the use of the electric emping melinjo dryer (KEPINGJO) so that partners are able to operate the equipment and increase production capacity. The implementation method includes several stages: preparation, technology socialization, training, trials, evaluation, and mentoring. The results show that the partners actively participated and were able to operate the equipment independently. The use of the electric dryer resulted in a reduction from 1 kg to 0.64 kg within 1 hour at a temperature of 55 °C, which is much faster than the traditional drying method that takes 2–3 days. In addition, the moisture content of emping melinjo, initially 29% in the wet condition, decreased to 9.5% after the drying process using the electric dryer. The final product is more hygienic, evenly dried, and has a longer shelf life. The application of the KEPINGJO electric dryer has proven to increase productivity, product quality, and household income while strengthening the role of universities in delivering appropriate technological innovations.
Keywords: dryer; melinjo; empowerment; training; food self-sufficiency
Abstrak: Kegiatan pengabdian kepada masyarakat ini dilatarbelakangi oleh permasalahan pengeringan emping melinjo di Kecamatan Perbaungan, Kabupaten Serdang Bedagai, yang masih mengandalkan sinar matahari. Metode tersebut memiliki banyak keterbatasan karena bergantung pada cuaca, membutuhkan waktu 2–3 hari, serta menghasilkan produk yang kurang higienis dan tidak seragam. Tujuan kegiatan adalah memberikan solusi melalui pendampingan dan pelatihan penggunaan alat pengering elektrik emping melinjo (KEPINGJO) agar mitra mampu mengoperasikan dan meningkatkan kapasitas produksi. Metode pelaksanaan meliputi tahap persiapan, sosialisasi teknologi, pelatihan, uji coba, serta evaluasi dan pendampingan. Hasil kegiatan menunjukkan mitra aktif berpartisipasi dan mampu menggunakan alat secara mandiri. Penggunaan alat pengering elektrik memperlihatkan penyusutan dari 1 kg menjadi 0,64 kg dalam waktu 1 jam pada suhu 55 °C, jauh lebih cepat dibanding metode tradisional 2–3 hari. Selain itu, kadar air emping melinjo yang semula sebesar 29% pada kondisi basah menurun menjadi 9,5% setelah proses pengeringan menggunakan alat pengering elektrik. Produk yang dihasilkan lebih higienis, kering merata, dan memiliki daya simpan lebih lama. Penerapan pengering elektrik KEPINGJO terbukti meningkatkan produktivitas, kualitas, serta pendapatan rumah tangga, sekaligus memperkuat kontribusi perguruan tinggi dalam menghadirkan inovasi tepat guna.
Kata kunci: alat pengering; melinjo; pemberdayaan; pelatihan; kemandirian pangan
Abstract:Abstract: Reuse, Reduce and Recycle (3R) is the behavior of waste management into a valuable material that can increase the economic benefits of the community and reduce environmental damage affecting global warming. This…
s behavior is often used as a solution to improve the environment that has waste management problems. The purpose of this paper is to identify strategies for optimizing Community Based Independent Waste Management with the 3 R Concept (Reuse, Reduce, Recycle) in Sukaluyu Village, Karawang. This strategy is planned to be able to explore community participation that is bottom-up, starting from the identification of problems and needs of the community, socialization of the concept of 3 R in the household so that people can feel the benefits economically and preserve the environment.The implementation method consists of surveys, hearings, focus group discussions, training, and waste sorting self-practices. This activity is expected to not only improve the environmental quality of the Sukaluyu Village community, but also can change the perceptions and behavior of the community and local stakeholders regarding waste reduction and management. The most important conclusion of this community services is the emphasis on awareness and high involvement motivation of the community in waste management to create culture in the community.
Keywords: community participation; reuse reduce recycle; waste management
Abstrak: Reuse, Reduce dan Recycle (3R) adalah perilaku pengelolaan sampah menjadi bahan bernilai yang dapat meningkatkan manfaat ekonomis masyarakat dan mengurangi kerusakan lingkungan yang berdampak terhadap pemanasan global. Konsep 3 R ini sering dijadikan solusi untuk memperbaiki lingkungan yang memiliki masalah dalam pengelolaan sampah. Tujuan dari penulisan ini adalah untuk mengidentifikasi strategi optimalisasi Pengelolaan Sampah Mandiri Berbasis Masyarakat dengan konsep 3 R (Reuse, Reduce, Recycle) di Desa Sukaluyu, Karawang. Strategi ini direncanakan untuk menggali partisipasi masyarakat yang bersifat bottom-up, dimulai dari identifikasi masalah dan kebutuhan masyarakat, sosialisasi konsep 3R di rumah tangga sehingga masyarakat dapat merasakan manfaat secara ekonomis dan menjaga kelestarian lingkungan. Metode pelaksanaan terdiri dari survei, audiensi, focus group discussion, pelatihan, dan praktik mandiri pengolahan-pemilahan sampah. Kegiatan ini diharapkan tidak hanya meningkatkan kualitas lingkungan masyarakat Desa Sukaluyu, namun juga dapat mengubah persepsi dan perilaku masyarakat dan stakeholder setempat terkait pengurangan dan pengelolaan sampah. Kesimpulan penting dari pengabdian ini adalah adanya kesadaran dan motivasi keterlibatan masyarakat yang baik dalam pengelolaan sampah hingga dapat menciptakan budaya di masyarakat.
Kata kunci: partisipasi masyarakat; pengelolaan sampah; reuse reduce recycle
Abstract:Abstract: The global transition towards sustainable food systems faces significant challenges in vegetarian food supply chains, including transparency issues, distribution inefficiencies, and quality verification problems.…
s. This research proposes VegeChain development, a decentralized marketplace ecosystem based on smart contracts designed to transform vegetarian food supply chains and accelerate Meatless, Balanced, Green (MBG) program adoption. Using mixed-method methodology integrating blockchain system design, stakeholder analysis, and economic simulation, this research develops a comprehensive technology framework combining blockchain transparency, smart contract automation, and sustainable tokenomics with novel mathematical models. The system implements dynamic pricing algorithms based on Automated Market Maker (AMM) mechanisms, multi-objective optimization for supply chain efficiency, and reputation-based consensus protocols. Simulation results demonstrate that VegeChain implementation can improve supply chain efficiency by 35%, reduce food waste by 28%, and increase consumer trust by 42% measured through validated stakeholder satisfaction surveys (n=456) using 5-point Likert scales with statistical significance p<0.001. Technical innovations include Byzantine Fault Tolerant consensus with 99.9% reliability, gas optimization achieving 67% cost reduction, and real-time quality verification algorithms with 98.7% accuracy.
Keywords: smart contracts; supply chain optimization; automated market makers; blockchain technology; sustainable tokenomics
Abstract:Abstract: Heart disease is one of the leading causes of death worldwide, making early detection and accurate diagnosis crucial for reducing mortality rates and improving patient outcomes. This study aims to evaluate the…
effectiveness of four machine learning algorithms—Logistic Regression, Random Forest, Support Vector Machine (SVM), and K-Nearest Neighbors (KNN)—in predicting heart disease, with a focus on enhancing model performance using Linear Discriminant Analysis (LDA) for feature reduction. Among the models, SVM achieved the highest accuracy at 84.24%, followed by Logistic Regression at 83.70%. Although Random Forest and KNN showed lower accuracies, all models benefited from LDA's dimensionality reduction. This study suggests that SVM, combined with LDA, offers an optimal solution for early and accurate heart disease prediction in the healthcare industry.
Keywords: feature reduction; heart disease; linear discriminant analysis (LDA); machine learning; SVM
Abstrak: Penyakit jantung merupakan salah satu penyebab utama kematian di seluruh dunia, sehingga deteksi dini dan diagnosis yang akurat sangat penting untuk menurunkan angka kematian dan meningkatkan hasil pengobatan pasien. Penelitian ini bertujuan untuk mengevaluasi efektivitas empat algoritma pembelajaran mesin—Regresi Logistik, Random Forest, Support Vector Machine (SVM), dan K-Nearest Neighbors (KNN)—dalam memprediksi penyakit jantung, dengan fokus pada peningkatan kinerja model menggunakan Analisis Diskriminan Linear (LDA) untuk reduksi fitur. Di antara model yang diuji, SVM mencapai akurasi tertinggi sebesar 84,24%, diikuti oleh Regresi Logistik dengan 83,70%. Meskipun Random Forest dan KNN menunjukkan akurasi yang lebih rendah, semua model memperoleh manfaat dari reduksi dimensi yang diberikan oleh LDA. Studi ini menunjukkan bahwa SVM yang dikombinasikan dengan LDA merupakan solusi optimal untuk prediksi penyakit jantung secara dini dan akurat dalam industri kesehatan.
Kata kunci: linear discriminant analysis (LDA); machine learning; penyakit jantung; reduksi fitur; SVM.
Abstract:The rights of justice collaborators (JCs) to obtain sentence reductions in murder cases remain inconsistently applied within Indonesia’s criminal justice system. This research addresses three core issues: the normative legal…
legal basis for JC rights, the consistency of judicial decisions in granting those rights, and the necessity for legal reform. Using a normative juridical approach supported by document analysis and expert interviews, the study examines Law No. 31/2014, SEMA No. 4/2011, and recent judicial decisions, including the high-profile cases of Richard Eliezer and Abdul Khoir. Findings reveal that while legal provisions exist, the absence of detailed indicators, formal mechanisms for status determination, and binding multi-institutional coordination leads to implementation gaps. Judicial discretion remains unchecked, resulting in unequal treatment of justice collaborators with similar contributions. The study concludes that a lex specialis law is urgently needed to standardize definitions, evaluation mechanisms, and inter-agency protection schemes. Recommendations include harmonization of technical norms, incorporation of JC recognition in verdicts, and alignment with UNCAC and UNTOC standards. This would strengthen legal certainty, uphold the principle of nulla poena sine lege, and enhance the effectiveness of the criminal justice system in addressing serious crimes through systemic cooperation.
Abstract:This study examines the fulfillment of remission rights for drug offenders in Indonesia following the enactment of Government Regulation No. 99 of 2012, which introduced restrictive provisions inconsistent with the rehabilitative…
ilitative vision of Law No. 12 of 1995. The research problem lies in the normative contradiction between correctional laws oriented toward behavioural reform and derivative regulations that prioritise punitive measures. The study aims to evaluate the implementation of remission regulations and their alignment with principles of justice and human rights. Employing a normative legal research design, it analyses statutes, judicial decisions, doctrines, and comparative law. Findings reveal that remission has shifted from a universal right to a conditional privilege, disproportionately affecting low-level drug offenders, exacerbating prison overcrowding, and weakening legal certainty. The study concludes that policy reform is necessary through individualised assessments, restorative justice integration, independent oversight, and regulatory harmonisation to restore fairness and uphold human rights.