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Optimalisasi Pengolahan Cabai Menjadi Chili Oil Untuk Meningkatkan Pendapatan Kelompok Wanita Tani Reza, M. Aulia; Dwi N, M. Zaky; Nur’azkia R, Nazwa; Zakariya, Husni; Alianda W, Najwa; Yuri Is, Manaf; Dilla, Diva Fara; Putri, Inanda; Aditya, M. Ircham; Lestari, Wahyu Tri; Juhari, Juhari
Prosiding Seminar Nasional Program Pengabdian Masyarakat Vol. 8 No. 1 (2025): Rekonstruksi Pendidikan di Indonesia
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/ppm.81.1367

Abstract

The community service program in Japanan Hamlet aims to optimize the processing of chili into chili oil products in order to increase the income of the Women Farmers Group (KWT). The local community, who are mostly farmers, often face challenges in utilizing the chili harvest optimally. In order to achieve this goal, this community service activity is carried out through several stages, namely problem identification, solution planning, and program implementation. The methods used in this community service are training and mentoring. The training program includes chili processing techniques, packaging that meets food safety standards, and digital marketing strategies to increase the selling value of the product. The implementation is carried out interactively and based on practice, starting with socialization about the benefits of chili oil and continuing with direct practice. The results of this program show that KWT mothers have increased their knowledge and skills regarding the chili processing process, from selecting raw materials to the packaging stage. In addition, this program also improves the skills of KWT mothers regarding the use of social media and marketplaces as a means of marketing. Despite challenges such as a lack of initial understanding of digital marketing, the solution steps that have been implemented have succeeded in having a positive impact on KWT, which not only gained new knowledge and skills, but also increased their income through value-added products. Through synergy between students, the community, and universities, this activity is expected to provide a significant contribution to the economic welfare of the local community
Analisis Dinamik Model Matematika Pengaruh Kebijakan Pemerintah dan Pengembangan Keterampilan Terhadap Dinamika Pengangguran Akbar, Rizqi Ardika; Juhari, Juhari
Jurnal Riset Mahasiswa Matematika Vol 4, No 5 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i5.34712

Abstract

Penelitian ini mengembangkan model matematika dinamik untuk menganalisis pengaruh kebijakan pemerintah dan pengembangan keterampilan terhadap dinamika pengangguran, khususnya pengangguran struktural dan siklis. Model memuat lima kompartemen utama: pengangguran struktural, pengangguran siklis, tenaga kerja, keterampilan, dan kebijakan pemerintah. Dengan pendekatan sistem persamaan diferensial nonlinier dan metode Next Generation Matrix, diperoleh titik kesetimbangan serta bilangan reproduksi dasar. Hasil simulasi menunjukkan bahwa peningkatan intensitas kebijakan dan efektivitas pelatihan mampu menekan tingkat pengangguran secara signifikan. Temuan ini menekankan pentingnya intervensi kebijakan yang berkelanjutan dalam mengelola pasar tenaga kerja.
Uji Kausalitas Granger dalam Menganalisis Hubungan Indeks Pembangunan Manusia, Tingkat Pengangguran Terbuka, dan Kemiskinan Fatin Dzahabiy, Amirah Salsabila Syahirah; Harini, Sri; Juhari, Juhari
Jurnal Riset Mahasiswa Matematika Vol 4, No 4 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i4.30406

Abstract

Kesejahteraan sosial dan kualitas pembangunan suatu wilayah dapat diukur melalui beberapa indikator, termasuk Indeks Pembangunan Manusia (IPM), Tingkat Pengangguran Terbuka (TPT), dan tingkat kemiskinan Penelitian ini bertujuan untuk mengetahui bagaimana hubungan kausalitas antara IPM, TPT, dan kemiskinan dengan menggunakan alat analisis kausalitas granger. Data yang digunakan adalah data panel dari Kab/Kota di Jawa Timur selama periode waktu 2017-2023. Hasil dari analisis penelitian ini adalah terdapat kointegrasi antara IPM, TPT, dan tingkat kemiskinan yang mengindikasi adana hubungan jangka panjang yang stabil diantara ketiganya. Selain itu, terdapat hubungan kausalitas dua arah antara ketiga variabel tersebut. Penelitian ini memberikan kontribusi penting dalam perumusan kebijakan daerah,. Dengan memahami hubungan timbal balik anatar IPM, TPT, dan tingkat kemiskinan pemerintah dapat merancang kebijakan yang lebih terintegrasi seperti penciptaan lapangan pekerjaan atau program pemberdayaan masyarakat. Upaya tersebut diharapkan mampu meningkatkan kesejahteraan sosial dan mempercepat pertumbuhan ekonomi di wilayah Jawa Timur. 
Financial Self-Efficacy, Lifestyle, and Peer Influence on Credit Decisions: The Mediating Role of Financial Control in Gen Z Sapira, Bella; Juhari, Juhari; Suhardi, Suhardi; Makrus, Mohamad
Economic: Journal Economic and Business Vol. 4 No. 2 (2025): ECONOMIC: Journal Economic and Business
Publisher : Lembaga Riset Mutiara Akbar (LARISMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/ejeb.v4i2.1082

Abstract

This study examines the influence of financial self-efficacy (FSE), hedonic lifestyle (HL), and peer influence (PI) on financial self-control (FSC), with financial control (FC) as a mediating variable among Generation Z. Amid the increasing complexity of financial decision-making in the digital age, this research highlights the interplay between psychological and social factors in shaping personal financial behavior. Utilizing a quantitative approach and Partial Least Squares Structural Equation Modeling (PLS-SEM), data were collected from 124 respondents aged 20–35 with financial decision-making experience. Results show that FSE has a significant positive impact on FC, and FC significantly affects FSC. However, FSE does not directly influence FSC but exerts a significant indirect effect through FC. HL does not directly impact FSC but negatively affects FC, indicating that a hedonistic lifestyle undermines practical financial control. While the indirect effect of HL on FSC is negative, it is statistically insignificant. Conversely, PI significantly influences both FC and FSC directly, although its mediation via FC is not significant. These findings underscore the critical mediating role of financial control. Practical financial education programs should address not only knowledge but also psychological confidence and social influences to enhance financial self-regulation in young adults.
ON THE BEHAVIOR ANALYSIS OF SUSCEPTIBLE, INFECTION, RECOVERY (SIR) MEASLES SPREAD MODEL WITH AGE STRUCTURE Juhari, Juhari
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 16 No 2 (2022): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.069 KB) | DOI: 10.30598/barekengvol16iss2pp427-442

Abstract

This study discusses the behavior analysis model of the Susceptible-Infected-Recovered (SIR) epidemic of the spread of measles based on age structure. The total population is grouped into four age groups, the first age group (0-4 years), the second age group (5-9 years), the third age group (10-14 years), and the fourth age group (> 15 years). The steps in analyzing the behavior of the model can be done by determining the equilibrium point, basic reproduction number, and stability analysis at the equilibrium point. In the measles distribution model with four age groups, where each age group has no interaction with other age groups, sixteen equilibrium points are obtained, which are a combination of the disease-free equilibrium and endemic equilibrium points separately. The stability properties of each equilibrium point can be determined by the value of the basic reproduction number (R_0) which is the product of the basic reproduction number of each age group. The measles disease-free equilibrium point will be locally asymptotically stable when R_0<1, meanwhile the endemic equilibrium point is locally asymptotically stable when R_0>1. This research contributes to providing information to both the government and the public.
THE INFLUENCE OF GOVERNMENT POLICIES, TRADE UNIONS AND MANAGERIAL ROLES ON THE STABILITY OF INDUSTRIAL RELATIONS WHICH IMPACT THE PERFORMANCE OF TIN MINING SMELTER COMPANIES IN THE PROVINCE OF BANGKA BELITUNG ISLANDS Susanto, Ady; Sugianto, Efendi; Hamdan, Hamdan; Juhari, Juhari
MSJ : Majority Science Journal Vol. 3 No. 3 (2025): MSJ-August
Publisher : PT. Hafasy Dwi Nawasena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61942/msj.v3i3.409

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This study aims to examine the influence of government policies, trade unions, and managerial roles on the stability of industrial relations and their impact on the performance of tin mining smelter companies in the Bangka Belitung Islands Province. The main problem in this study is how the interaction of these three independent variables can create a stable, productive, and sustainable working relationship climate, which in turn affects the company's overall performance. The method used in this study uses a quantitative approach with a descriptive-causal design, where data is collected through a questionnaire of 170 respondents, consisting of tin smelter employees and employees of the Manpower Office. The instrument was measured on a five-point Likert scale and analyzed using multiple linear regression and simple linear regression to determine the correlative relationship between the variables studied. Based on the results of the study, it can be concluded that simultaneously government policies, trade unions, and managerial roles have a significant influence on the stability of industrial relations. Partially, each independent variable also makes a significant contribution to the stability of industrial relations. This research makes a theoretical contribution to the study of industrial relations and offers practical recommendations for policymakers, company management, and trade unions to strive for a positive and sustainable work environment.
THE INFLUENCE OF PARTICIPATORY LEADERSHIP STYLE, THE AVAILABILITY OF HUMAN RESOURCES AND INFORMATION TECHNOLOGY ABILITY ON WORK MOTIVATION WHICH IMPACT EMPLOYEE PERFORMANCE AT THE DISTRICT LEVEL IN PANGKALPINANG CITY Wan, Tjik; Sugianto, Efendi; Hamdan, Hamdan; Juhari, Juhari
MSJ : Majority Science Journal Vol. 3 No. 3 (2025): MSJ-August
Publisher : PT. Hafasy Dwi Nawasena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61942/msj.v3i3.417

Abstract

The improvement of public sector employee performance depends greatly on various managerial and technological factors. This study aims to analyze the influence of participative leadership style, human resource availability, and information technology capability on work motivation and their impact on employee performance at the sub-district level in Pangkal Pinang City. A quantitative approach was employed using a survey method involving 75 respondents. The data were analyzed using Structural Equation Modeling (SEM) with the Partial Least Squares (PLS) technique through SmartPLS version 4. The results indicated that participative leadership style, human resource availability, and information technology capability significantly influenced work motivation. Work motivation was also found to have a direct effect on employee performance. Meanwhile, the direct effects of participative leadership style and information technology capability on performance were not significant; however, both exerted indirect effects through work motivation as a mediating variable. These findings highlight the critical role of work motivation in mediating the influence of managerial and technological factors on achieving optimal employee performance in the public sector
Reliable and Efficient Sentiment Analysis on IMDb with Logistic Regression Ulya, Diah Mariatul; Juhari, Juhari; Yuliana, Rossima Eva; Jamhuri, Mohammad
CAUCHY: Jurnal Matematika Murni dan Aplikasi Vol 10, No 2 (2025): CAUCHY: JURNAL MATEMATIKA MURNI DAN APLIKASI
Publisher : Mathematics Department, Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/cauchy.v10i2.33809

Abstract

Understanding public opinion at scale is essential for modern media analytics. We present a reproducible, leakage-safe evaluation of logistic regression (LR) for binary sentiment classification on the IMDb Large Movie Review dataset and compare it with five widely used baselines: multinomial Naive Bayes, linear support vector machine (SVM), decision tree, k-nearest neighbors, and random forest. Using a standardized text pipeline (HTML stripping, stopword removal, WordNet lemmatization) with TF–IDF unigrams–bigrams and nested, stratified cross-validation, we assess threshold-dependent and threshold-independent performance, probability calibration, and computational efficiency. LR attains the best overall balance of quality and speed, achieving 88.98% accuracy and 89.13% F1, with strong ranking performance (OOF ROC–AUC ≈ 0.9568; PR–AUC ≈ 0.9554) and well-behaved calibration (Brier ≈ 0.0858). Training completes in seconds per fold and CPU inference reaches about 2.46×10^6 samples per second. While a calibrated linear SVM yields slightly higher precision, LR delivers higher F1 at markedly lower compute. These results establish LR as a robust, transparent baseline that remains competitive with more complex neural and ensemble approaches, offering a favorable performance–efficiency trade-off for practical deployment and reproducible research on IMDb sentiment classification.
Application of the Fractal Geometry in Development Surya Majapahit Batik Motif Juhari, Juhari; Pratiwi, Alfrista Anggraini
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 8, No 3 (2024): July
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v8i3.22811

Abstract

The Mandelbrot and Julia sets are generated through iterative mathematical functions applied to points in the complex plane. These operations enable the detailed and intricate patterns characteristic of these fractals, allowing for modifications and zooming to explore different regions of the sets. TThe Mojokerto Surya Majapahit batik motif is a motif that has eight corners. One way to develop a Mojokerto batik motif that is similar to Surya Majapahit is by applying the science of fractal geometry. Fractal geometry studies a fractal pattern that can change shape according to input parameters and the number of iterations carried out. This research was conducted to determine the application of Mandelbrot and Julia’s fractal geometry using geometric transformations to obtain batik motif variants that is similar to Surya Majapahit. There are three steps in forming this motif variant. First, generating Mandelbrot fractals and Julia fractals. Second, the patterns generated by Mandelbrot and Julia are applied using geometric transformations. The geometric transformations that will be used are rotation, dilation, and translation. Finally, these patterns will be modified by combining patterns implementing logic operations using Python computer applications. The results of this research obtained four variants of batik motif that is similar to Surya Majapahit. The difference in each variant lies in the order of transformation. Variant 1 and variant 3 can be carried out by changing the sequence of geometric transformations, namely rotation, translation and dilationVariant 1 is obtained by applying rotation, dilation, and translation to the Mandelbrot and Julia pattern. Variant 2 is obtained with the Mandelbrot pattern applying rotation, dilation with two different scales, and translation, while the Julia pattern only applied rotation and translation. Variant 3 is obtained by applying rotation, dilation and translation to the Mandelbrot and Julia pattern. Variant 4 is obtained with the Mandelbrot pattern applied by rotation, dilation with three different scales, and translation, while the Julia pattern was applied only by rotation and translation. Meanwhile variants 2 and 4 apply different rotations, dilation scales, namely 0.451 and 0.318, and translation to the Mandelbrot pattern.
Cross-Dataset Evaluation of Support Vector Machines: A Reproducible, Calibration-Aware Baseline for Tabular Classification Syafi'ah, Nurus; Jamhuri, Mohammad; Pranata, Farahnas Imaniyah; Kusumastuti, Ari; Juhari, Juhari; Pagalay, Usman; Khudzaifah, Muhammad
Jurnal Riset Mahasiswa Matematika Vol 4, No 6 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i6.33438

Abstract

Support Vector Machines (SVMs) remain competitive for small and medium-sized tabular classification problems, yet reported results on benchmark datasets vary widely due to inconsistent preprocessing, validation, and probability calibration. This paper presents a calibration-aware, cross-dataset benchmark that evaluates SVMs against classical baselines—Logistic Regression, Decision Tree, and Random Forest—under leakage-safe pipelines and statistically principled protocols. Using three representative binary datasets (Titanic survival, Pima Indians Diabetes, and UCI Heart Disease), we standardize imputation, encoding, scaling, and nested cross-validation to ensure comparability. Performance is assessed not only on discrimination metrics (accuracy, precision, recall, F1, PR--AUC) but also on probability reliability (Brier score, Expected Calibration Error) and threshold optimization. Results show that tuned RBF--SVMs consistently outperform Logistic Regression and Decision Trees, and perform comparably to Random Forests. Calibration (Platt scaling, isotonic regression) substantially reduces error and improves decision quality, while domain-specific features enhance Titanic prediction. By embedding all steps in a transparent, reproducible protocol and validating across multiple datasets, this study establishes a rigorous methodological baseline for SVMs in tabular binary classification, providing a reference point for future machine learning research.
Co-Authors - Afrizal A Rosa, Ramadani Abdul Aziz Abdul Rachim Adi Susilo Aditya, M. Ircham Adriani, Nurita Agung Teguh Wibowo Almais Agus Naba ahmad yani Akbar, Rizqi Ardika Akhadah, Sisilia Firda Laila Alghar, Muhammad Zia Alianda W, Najwa Andrean, Mohamad Febry Angraini, Deffy Ari Kusumastuti Deli, Deli Dicky Wahyudi Dilla, Diva Fara DWI ANDREAS SANTOSA Dwi N, M. Zaky Erna Herawati, Erna Erny Octafiatiningsih, Erny Evawati Alisah Fajrin, Rahma Annisa Fatin Dzahabiy, Amirah Salsabila Syahirah Fauzi Fauzi Fibrianto, Ary Fikrina, Zulfa Akfi Gunawan, Arifin Faqih Hairur Rahman Hakim , Zainal Hamdan Hamdan Hasanah, Sofiatul Hasanuddin Hasanuddin Hidayati, Ummunisa Holanda, Sella Husna, Faridatul Imam Sujarwo Iskandar Iskandar Karinina, Olivia Khoirunnisa, Varikah Kiswari, Dianing Kurnia, Silvi Kurniawan, Rony Setyo Lestari, Wahyu Tri Mahmuddin Mahmuddin Makrus, Mohamad Marzuki, Ahmed Syarief Masri, Desi Meyliana, Ester Moechammad Sarosa Mohammad Isa Irawan Mohammad Jamhuri Mohammad Nafie Jauhari Mondal, Kartick Chandra Muhammad Khudzaifah Muis, Muhammad Abdul Mulyadi Mulyadi Nasichuddin, Achmad Nasir, Yusran Noor, Raden Ajeng Alycia Putri Nur’azkia R, Nazwa Oktavirgianti, Alifah Permata, Hendrik Widya Pranata, Farahnas Imaniyah Pratiwi, Alfrista Anggraini Puji Wianto, Wildan Faried Anshoriy Putri, Inanda Rachmawati, Mila Rahmadhani, Anis Putri Rasyidah, Jihan Fikri Reza, M. Aulia Ria Dhea Layla Nur Karisma Rika Dina Amalia, Dina Amalia Rossi Maunofa Widayat RR. Ella Evrita Hestiandari Safitri, Alisa Ayu Said Amirulkamar Sapira, Bella Sari, Fitri Nofita shidieq, faris majdie Sofia, Wise Ahmad Sri Harini Sugianto, Efendi Suhardi Suhardi Sukroni, Achmad Faiz Susanto, Ady Susanto, Deki Syafi'ah, Nurus Taufik Iskandar Triyono, Gandung Tunggal Saputra, Tri Aji Turmudi Ulung Pribadi, Ulung Ulya, Diah Mariatul Usman Pagalay Utami, Febry Noorfitriana Wahyuni, Diah Maghfiroh Wan, Tjik Yuliana, Rossima Eva Yuri Is, Manaf Zakaria, Nor Balkish Zakariya, Husni Zufriady, Zufriady