Abstract:Abstract: Accurate forecasts of tea harvest production are important for workforce planning, factory operations, and marketing decisions, yet conventional estimation in plantations often relies on field experience and can…
n be biased and less adaptive to changing conditions. This study aims to develop a Random Forest Regression model to predict tea harvest production at the Bah Butong tea plantation using historical operational and climate-related data. The dataset consists of 60 monthly records (2020–2024) with six predictor variables: rainfall (mm), number of rainy days, pest level, weed level, number of harvested trees and land area. Data were split into 80% training (48 samples) and 20% testing (12 samples). Model hyperparameters were optimized using RandomizedSearchCV with RepeatedKFold cross-validation (5 folds, 3 repeats). The tuned model achieved MSE of 668,980,524.45, RMSE of 25,864.66 kg, MAE of 19,838.69 kg, and MAPE of 7.59% on the test set. The results indicate that the model can provide practical production estimates, with errors averaging about 7–8% of the actual production. Feature importance analysis shows that the number of harvested tea bushes and cultivated area contribute most to predictions. Future work should extend the historical period and incorporate time-based features (seasonality/lag) for improved forecasting.
Keywords: hyperparameter tuning; production prediction; random forest; regression; tea harvest
Abstrak: Perkiraan akurat produksi panen teh sangat penting untuk perencanaan tenaga kerja, operasional pabrik, dan keputusan pemasaran, namun estimasi konvensional di perkebunan seringkali bergantung pada pengalaman lapangan dan dapat bias serta kurang adaptif terhadap perubahan kondisi. Studi ini bertujuan untuk mengembangkan model Regresi Random Forest untuk memprediksi produksi panen teh di perkebunan teh Bah Butong menggunakan data operasional dan data terkait iklim historis. Dataset terdiri dari 60 catatan bulanan (2020–2024) dengan enam variabel prediktor: curah hujan (mm), jumlah hari hujan, tingkat hama, tingkat gulma, jumlah pokok panen, dan luas lahan. Data dibagi menjadi 80% data pelatihan (48 sampel) dan 20% data pengujian (12 sampel). Parameter model dioptimalkan menggunakan RandomizedSearchCV dengan validasi silang RepeatedKFold (5 lipatan, 3 pengulangan). Model yang telah disempurnakan mencapai MSE sebesar 668.980.524,45, RMSE sebesar 25.864,66 kg, MAE sebesar 19.838,69 kg, dan MAPE sebesar 7,59% pada set data uji. Hasil tersebut menunjukkan bahwa model dapat memberikan estimasi produksi yang praktis, dengan kesalahan rata-rata sekitar 7–8% dari produksi aktual. Analisis kepentingan fitur menunjukkan bahwa jumlah semak teh yang dipanen dan luas lahan budidaya paling berkontribusi pada prediksi. Pekerjaan selanjutnya harus memperpanjang periode historis dan menggabungkan fitur berbasis waktu (musiman/lag) untuk peramalan yang lebih baik.
Kata kunci: panen teh; prediksi produksi; random forest; regresi; tuning parameter
Abstract:Abstract: Academic achievement mapping is an important process in higher education to support effective academic monitoring and guidance. In practice, student grouping is often conducted manually by academic staff using…
simple criteria such as Grade Point Average (GPA) thresholds and subjective judgment, without systematic data analysis. This study aims to apply the Fuzzy C-Means (FCM) clustering algorithm to objectively group students based on their academic achievement levels. The dataset consists of academic records from 179 sixth-semester students of the Computer Science Study Program at Universitas Islam Negeri Sumatera Utara, where 160 eligible students are processed in the FCM calculation. Three variables are used: cumulative GPA, total completed credits, and the total number of low grades (D/E). The FCM algorithm automatically performs the mapping and groups students into three categories, namely excellent, stable, and at-risk students. Cluster quality is evaluated using the Silhouette Score and Davies–Bouldin Index, showing satisfactory clustering performance. The results indicate that the proposed approach provides a data-driven and objective basis for academic decision support.
Keywords: academic achievement; clustering; fuzzy c-means; student
Abstrak: Pemetaan pencapaian akademik mahasiswa merupakan proses penting dalam pendidikan tinggi untuk mendukung pemantauan dan pembinaan akademik yang tepat sasaran. Dalam praktiknya, pengelompokan mahasiswa masih sering dilakukan secara manual oleh pihak akademik berdasarkan kriteria sederhana, seperti batasan Indeks Prestasi Kumulatif (IPK) dan penilaian subjektif, tanpa analisis data yang sistematis. Penelitian ini bertujuan menerapkan algoritma Fuzzy C-Means (FCM) untuk mengelompokkan mahasiswa secara objektif berdasarkan tingkat pencapaian akademik. Data penelitian berasal dari 179 mahasiswa semester enam Program Studi Ilmu Komputer Universitas Islam Negeri Sumatera Utara, dengan 160 mahasiswa memenuhi kriteria dan diproses menggunakan algoritma FCM. Variabel yang digunakan meliputi IPK kumulatif, jumlah SKS yang telah ditempuh, dan total nilai rendah (D/E). Proses pemetaan sepenuhnya dilakukan oleh algoritma FCM dan menghasilkan tiga kategori mahasiswa, yaitu unggul, stabil, dan berisiko. Evaluasi menggunakan Silhouette Score dan Davies–Bouldin Index menunjukkan kualitas pengelompokan yang cukup baik.
Kata kunci: fuzzy c-means; clustering; mahasiswa; pencapaian akademik
Abstract:Abstract: The Ministry of Education, Culture, Research, and Technology, has developed guidelines for the Internal Quality Assurance System or known as SPMI, that is being implemented through the Internal Quality Audit (IQA)…
QA) with the PPEPP cycle, namely Determination (P), Implemen-tation (P), Evaluation (E), Control (P), and Improvement (P). Some universities have implemented IQA with system. The problem is that the system does not line well with the PPEPP cycle, which results in unsatisfactory audit results. The purpose of this study is to evaluate how well the university-owned AQI system features in line the PPEPP cycle and to highlight development opportunities. The method used Feature Oriented Domain analysis (FODA) and Acceptance Testing. This study delivered an analysis of IQA system features that consistent with PPEPP. The FODA results were validated by expert and tested with User Acceptance Test (UAT) with 89.98% user response that the system is acceptable. The research contributes to universities' understanding of the features necessary in the AQI system, which has an impact on the perfection of the university AQI system design in accordance with the PPEPP cycle.
Keywords: FODA; IQA system; PPEPP cycle; SPMI
Abstrak: Kementerian Pendidikan, Kebudayaan, Riset, dan Teknologi telah menyusun pedoman Sistem Penjaminan Mutu Internal atau yang dikenal dengan SPMI, yang diimplementasikan melalui Audit Mutu Internal (AMI) dengan siklus PPEPP, yaitu Penetapan (P), Pelaksanaan (P), Evaluasi (E), Pengendalian (P), dan Peningkatan (P). Beberapa perguruan tinggi telah mengimplementasikan AMI dengan sistem. Permasalahannya, sistem tersebut tidak sejalan dengan siklus PPEPP, sehingga hasil audit kurang memuaskan. Tujuan dari penelitian ini adalah untuk mengevaluasi seberapa baik fitur sistem AMI milik perguruan tinggi sejalan dengan siklus PPEPP dan menyoroti peluang pengembangan. Metode yang digunakan adalah analisis Feature Oriented Domain (FODA) dan Acceptance Testing. Penelitian ini menghasilkan analisis fitur sistem AMI yang konsisten dengan PPEPP. Hasil FODA divalidasi oleh ahli dan diuji dengan User Acceptance Test (UAT) dengan 89,98% respon pengguna bahwa sistem dapat diterima. Penelitian ini memberikan kontribusi terhadap pemahaman universitas terhadap fitur-fitur yang diperlukan dalam sistem AMI, yang berdampak pada kesempurnaan desain sistem AMI universitas sesuai dengan siklus PPEPP.
Kata kunci: FODA; siklus PPEPP; sistem AMI; SPMI
Abstract:Abstract: The online exam system is used to evaluate student learning, but it has some limitations. Therefore, it is necessary to research the user satisfaction of the system. This study aims to assess user satisfaction…
using the End User Computing Satisfaction (EUCS), Importance Performance Analysis (IPA), and Customer Satisfaction Index (CSI) methods. The results showed that three dimensions, namely, accuracy, ease of use, and timeliness significantly affected user satisfaction, while content and format did not have a significant effect. IPA analysis shows the majority of attributes (12 attributes) are in quadrant II, which indicates moderate satisfaction, 11 attributes in quadrant III, one attribute in quadrant I, and three attributes in quadrant IV. CSI concluded that the online exam system provides satisfactory service with a score of 77.54%.
Keywords: csi; eucs; ipa; online exam system; user satisfaction
Abstrak: Sistem ujian online digunakan untuk mengevaluasi pembelajaran mahasiswa, tetapi sistem ini memiliki beberapa keterbatasan. Karena itulah perlu penelitian kepuasan pengguna sistem tersebut. Penelitian ini bertujuan menilai kepuasan pengguna dengan menggunakan metode End User Computing Satisfaction (EUCS), Importance Performance Analisys (IPA), dan Customer Satisfaction Index (CSI). Hasil riset menunjukkan tiga dimensi yaitu, akurasi, kemudahan penggunaan, dan ketepatan waktu signifikan mempengaruhi kepuasan pengguna, sementara konten dan format tidak berpengaruh signifikan. Analisis IPA menunjukkan mayoritas atribut (12 atribut) berada di kuadran II, yang mengindikasikan kepuasan sedang, 11 atribut di kuadran III, satu atribut di kuadran I, dan tiga atribut di kuadran IV. CSI menyimpulkan sistem ujian online memberikan layanan yang memuaskan dengan skor 77,54%.
Kata kunci: csi; eucs; ipa; kepuasan pengguna; sistem ujian online
Abstract:Abstract: The increasing number of students at STMIK Royal Kisaran has raised the risk of air pollution caused by vehicle emissions, cigarette smoke, and waste burning, particularly around the campus canteen. The campus's…
s location, which is close to a rubber factory and the Sumatra Crossroad, further exacerbates air quality and significantly impacts the health of individuals active at STMIK Royal. This study aims to develop a system that can measure air quality in real-time and detect pollutants in the campus environment. The system utilizes MQ-135 and MQ-2 sensors integrated with a microprocessor to process and transmit data to an IoT-based database. This research employs a qualitative descriptive method to describe the facts and trends based on the available data. The results indicate that air quality is good in the morning, worsens during the afternoon, and improves again in the evening, reflecting increased pollution during periods of heightened industrial and transportation activities. The implementation of this system is expected to contribute to the creation of a healthier environment and raise awareness about the importance of air quality.
Keywords: air quality; campus environment ; IoT; pollution.
Abstrak: Peningkatan jumlah mahasiswa di Kampus STMIK Royal Kisaran telah meningkatkan risiko polusi udara akibat asap kendaraan, rokok, dan pembakaran sampah, terutama di sekitar kantin kampus. Lokasi kampus yang dekat dengan pabrik karet dan jalan lintas Sumatera sehingga memperburuk kualitas udara dan sangat mempengaruhi kesehatan para individu yang beraktivitas di STMIK Royal. Penelitian ini bertujuan mengembangkan sistem yang dapat mengukur kualitas udara secara real-time dan mendeteksi polutan di lingkungan kampus. Sistem ini menggunakan sensor MQ-135 dan MQ-2 yang terintegrasi dengan mikroprosesor untuk mengolah dan mengirim data ke database berbasis IoT. Penelitian ini menggunakan metode deskriptif kualitatif untuk menggambarkan fakta dan kecenderungan dari data yang tersedia. Hasilnya menunjukkan bahwa kualitas udara baik di pagi hari, memburuk di siang hari, dan membaik lagi di sore hari, menunjukkan peningkatan polusi saat aktivitas pabrik dan transportasi meningkat. Implementasi sistem ini diharapkan dapat mendukung terciptanya lingkungan yang lebih sehat dan meningkatkan kesadaran akan pentingnya kualitas udara.
Kata kunci: IoT; lingkungan kampus; kualitas udara; polusi.
Abstract:Abstract: Determination of the best performance of parking attendants at the Asahan District Transportation Service aims to increase responsibility and high loyalty to get satisfactory performance results and award parking…
ng attendants with the best performance. The assessment of the best performance of parking officers was carried out by 3 assessors namely traffic engineering management, parking section, parking administration staff. The problem in assessing the best performance of parking attendants is that there is no structured system so that the assessment time is quite long, around 2-3 weeks. In addition, the assessment still tends to be subjective, for example the parking attendant's assessment is based on closeness and kinship, causing jealousy. Overcoming this requires a computer system that helps decision making, namely a decision support system for determining the best performance of parking attendants at the Asahan District Transportation Service in this study using the BORDA method. The borda method is used to combine the results of the decision assessment of each appraiser so that the final result is the best performance of the parking attendant. The purpose of this research is to create a computerized system that will later assist in determining the best performance appraisal of parking attendants every year. Based on the research results of the system for determining the best performance of parking attendants in the form of ranking the final score of each parking attendant. The highest value is used as the best performance suggestion for parking attendants.
Keywords: borda method; decision support system; parking attendant performance
Abstrak: Penentuan kinerja terbaik petugas parkir pada Dinas Perhubungan Kabupaten Asahan bertujuan untuk perlu meningkatkan tanggung jawab dan loyalitas yang tinggi mendapatkan hasil kinerja yang memuaskan dan pemberian perhargaan bagi petugas parkir memiliki kinerja terbaik. Penilaian kinerja terbaik petugas parkir dilakukan oleh 3 penilai yaitu manajemen rekayasa lalu lintas, seksi parkir, staff administrasi parkir. Permasalahan dalam penilaian kinerja terbaik petugas parkir adalah belum ada sistem yang terstruktur sehingga waktu penilaian cukup lama sekitar kurang lebih 2-3 minggu. Selain itu penilaian masih cenderung subjektif misalnya penilaian petugas parkir berdasarkan kedekatan dan kekeluargaan sehingga menyebabkan kecemburuan. Mengatasi hal tersebut diperlukan suatu sistem komputer yang membantu pengambilan keputusan yaitu sistem pendukung keputusan penentuan kinerja terbaik petugas parkir pada Dinas Perhubungan Kabupaten Asahan dalam penelitian ini menggunakan metode BORDA. Metode borda digunakan untuk menggabungkan hasil penilaian keputusan dari tiap penilai sehingga dapat memperoleh hasil akhir berupa kinerja terbaik petugas parkir. Tujuan dari penelitian ini adalah untuk membuat suatu sistem komputerisasi yang nantinya akan membantu dalam menentukan penilaian kinerja terbaik petugas parkir disetiap tahunnya. Berdasarkan hasil penelitian dari sistem penentuan kinerja terbaik petugas parkir berupa perangkingan dari nilai akhir setiap petugas parkir. Nilai tertinggi dijadikan sebagai saran kinerja terbaik petugas parkir.
Kata kunci: metode borda; sistem pendukung keputusan; kinerja petugas parkir
Abstract:Abstract: The use is still the traditional way by trying corn seeds planted by farmers in Tanjungbalai in Asahan Regency. Farmers will choose maize seeds that are fast growing, but will have poor yields on fruit size, resulting…
sulting in less satisfactory yields. As a result a problem arises that will occur in the absence of determining a number of criteria that can get quality corn seeds. Farmers are not familiar with the use of technology in getting good corn seeds. This requires the use of a system that is able to answer and provide solutions in the selection of corn seeds using a number of criteria and alternatives to superior corn seeds. This research uses AHP method decision support system with comparison of criteria and alternatives in the selection of superior corn seeds in producing the best alternative.
Keywords: AHP, alternatives, criteria, farmers superior corn seeds
Abstrak: Penggunaan masih cara yang tradisional dengan mencoba bibit jagung yang di tanam oleh para petani di Tanjungbalai di Kabupaten Asahan. Petani akan memilih bibit jagung yang waktu tanamnya cepat, namun akan memiliki menghasilkan yang kurang baik pada ukuran buah mengakibatkan hasil produksi menjadi kurang memuaskan. Akibatnya timbul suatu masalah yang akan terjadi dengan tidak adanya penentuan sejumlah kriteria yang bisa mendapatkan bibit jagung yang berkualitas. Para petani kurang paham dengan penggunaan teknologi dalam mendapatkan bibit jagung yang bagus. Hal ini diperlukan penggunaan sistem yang mampu menjawab dan memberikan solusi dalam pemilihan bibit jagung menggunakan sejumlah kriteria dan alternatif bibit jagung unggul. Penelitian ini menggunakan sistem pendukung keputusan metode AHP dengan perbandingan kriteria dan alternatif pada pemilihan bibit jagung yang unggul dalam menghasilkan sebuah alternatif yang terbaik.
Kata kunci: AHP, alternatif, bibit jagung unggul, kriteria, petani
Abstract:This study is a Qualitative Descriptive research aimed at analyzing the performance of the village government in providing public services in Latdalam Village, South Tanimbar District, Tanimbar Islands Regency, and analyzing…
zing the quality of public services in Latdalam Village, South Tanimbar District, Tanimbar Islands Regency. The research was conducted in Latdalam Village, South Tanimbar District, Tanimbar Islands Regency. Primary data collection was done through interviews with several informants including the village chief, village staff of Latdalam Village, South Tanimbar District, Tanimbar Islands Regency, and the local community. The research findings indicate that the services provided by the officials of Latdalam Village are still considered inadequate. Therefore, the Latdalam Village government needs to improve work discipline to ensure that future services provided to the community are better and more satisfactory.
Abstract:The servants in the church are people chosen by God to serve and who are able to be responsible in every service entrusted to them. The purpose of the study was to determine whether there was an influence of the Sunday worship…
orship servants on the attendance of the GPdI Bethani Pabrik Tenun Medan congregation in 2023. This type of research was quantitative descriptive with a simple linear regression approach. The population was 220 people, and the research sampling technique was carried out by random sampling, namely 69 people, with a partial test (t test) with a confidence level of 95% (α = 0.05). The results of the study showed that the correlation between the worship system and congregation attendance was relative but significant with a calculated t value of -.586> t table 0.236, which means the hypothesis was accepted, namely Ho was rejected and H1 was accepted.
Abstract:This study aims to analyze the Fresh Fruit Bunch Boiling Process at the Sterlizer Station in Palm Oil Processing at PT. Sumber Bumi Sawit Jadi Jaya. In writing this report, data collection is very important. The data collection…
lection methods used by the author are as follows: Documents or References Data collection through written and electronic documents from PT. Sumber Bumi Sawit Jadi Jaya. Field Observation. The method is carried out by direct observation in the company environment. Literature Review. In addition to field observations, data is also taken from several literatures related to this report. The location of the field work practice was held at PT Sumber Bumi Sawit Jadi Jaya which is located on Jalan Besar Mandoge-Kisaran. And the field work practice lasted for 1 month. Starting from September 1st – October 1st, 2023. The conclusions obtained from the results of the practical work are as follows: PT. Sumber Bumi Sawit Jadi Jaya is a factory that processes fresh oil palm fruit bunches into CPO and palm kernel. The processing capacity at PT. Sumber Bumi Sawit Jadi Jaya is 30 Tons of FFB / Hour The organizational structure at PT. Sumber Bumi Sawit Jadi Jaya is a functional organizational structure. The results of processing the percentage of cardiovascular load obtained that all boiler workers needed repairs, and the workload category of the four workers was influenced by age factors