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All Journal Agrikultura CAUCHY: Jurnal Matematika Murni dan Aplikasi Jurnal Bisnis eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia JOIV : International Journal on Informatics Visualization IJBE (Integrated Journal of Business and Economics) Perisai : Islamic Banking and Finance Journal Publik (Jurnal Ilmu Administrasi) BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Peurawi : Media Kajian Komunikasi Islam Dinasti International Journal of Management Science Jurnal Ilmiah Manajemen Kesatuan Res Nullius Law Journal InPrime: Indonesian Journal Of Pure And Applied Mathematics Jurnal Disrupsi Bisnis Jurnal Pendidikan dan Teknologi Indonesia Jurnal Valuasi : Jurnal Ilmiah Ilmu Manajemen dan Kewirausahaan Prosiding Seminar Nasional Program Pengabdian Masyarakat Legal Protection for the Partnership Agreement Parties Journal of Social Science Jurnal Riset Mahasiswa Matematika Majority Science Journal Sadida: Islamic Communications and Media Studies International Journal of Magistravitae Management Jurnal Medika: Medika Economic: Journal Economic and Business Al-Insyiroh: Jurnal Studi Keislaman Journal of Research on Community Engagement TechTalent & Business Review
Juhari Juhari, Juhari
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The Influence of Transformational Leadership Style and Work Environment on the Performance of Bangka Belitung Islands Regional Police Employees Farina, Tri; Pajlia, Rini; Juhari, Juhari
TechTalent & Business Review Vol. 1 No. 4 (2026): TTBR-January 2026
Publisher : Asosiasi Peneliti dan Inovasi Nusantara (APIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63985/ttbr.v1i4.68

Abstract

This study aims to analyze and empirically test the influence of transformational leadership style and work environment on the performance of Bangka Belitung Islands Regional Police employees. Employee performance is a strategic factor in supporting the effectiveness of police duties and improving the quality of public services. This study uses a quantitative approach with a causal associative method. The research data was obtained by distributing questionnaires to 150 employees of the Bangka Belitung Islands Regional Police, who were selected using probability sampling with the simple random sampling method. The research instruments were tested for validity and reliability, and all statement items were declared valid and reliable. The data analysis technique used was multiple linear regression analysis with the help of statistical software, preceded by classical assumption testing. The results showed that transformational leadership style had a positive and significant effect on employee performance, as evidenced by a significance value of 0.000 < 0.05.  The work environment has also been proven to have a positive and significant effect on employee performance with a significance value of 0.000 < 0.05. Furthermore, the simultaneous test results show that transformational leadership style and work environment together have a positive and significant effect on employee performance. The coefficient of determination (R²) value of 0.523 indicates that 52.3% of employee performance variation can be explained by transformational leadership style and work environment, while the rest is influenced by other variables outside the research model. These findings indicate that the application of effective transformational leadership style, accompanied by the creation of a conducive work environment, can increase employee motivation, commitment, and productivity. This study provides a theoretical contribution to the development of human resource management studies in the public sector, particularly in police institutions, and provides practical implications for the leadership of the Bangka Belitung Islands Regional Police in formulating leadership development and work environment improvement policies to improve employee performance in a sustainable manner.
The Effect of Compensation Management on Employee Retention Among Street Vendors in Pangkalpinang with Entrepreneurial Orientation as a Mediating Variable Saputra, Luthfi Darma; Rusdiana, Eva Agus; Juhari, Juhari
TechTalent & Business Review Vol. 1 No. 4 (2026): TTBR-January 2026
Publisher : Asosiasi Peneliti dan Inovasi Nusantara (APIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63985/ttbr.v1i4.69

Abstract

This study analyzes the effect of compensation management on employee retention among street vendors in Pangkalpinang, with an entrepreneurial orientation as a mediator. The informal sector experiences high turnover due to traditional and unstructured compensation systems. This quantitative study involved 96 street vendors with PLS-SEM analysis using SmartPLS 4.0. The results show: (1) Compensation management has a significant positive effect on entrepreneurial orientation (β=0.729, p<0.001); (2) Compensation management does not have a significant direct effect on retention (β=0.035, p=0.827); (3) Entrepreneurial orientation has a significant positive effect on retention (β=0.760, p<0.001); (4) Entrepreneurial orientation fully mediates the effect of compensation on retention (94% of the effect is mediated, indirect effect=0.554, p<0.001). The findings indicate that improving retention requires a holistic approach that combines a structured compensation system with the development of an entrepreneurial culture. The study contributes to the HRM literature in the informal sector, showing that HRM practices remain relevant with different mechanisms from the formal sector.
Student Strategies in Maintaining a Balance Between Academic Work, Organizational Activities, and Personal Life (A Study of Master of Management Students at Pertiba University) Juhaini, Juhaini; Sumiati, Sumiati; Juhari, Juhari
TechTalent & Business Review Vol. 1 No. 4 (2026): TTBR-January 2026
Publisher : Asosiasi Peneliti dan Inovasi Nusantara (APIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63985/ttbr.v1i4.74

Abstract

Master's students face high academic demands, involvement in organizational activities, and the need to maintain a balanced personal life. These conditions require effective strategies so that students can perform various roles without causing excessive stress. This study aims to analyze students' strategies in maintaining a balance between academic work, organizational activities, and personal life among Master of Management students at Pertiba University. This study uses a quantitative approach with a survey method by distributing questionnaires to 72 students as respondents. The research variables consisted of student strategies as the independent variable and life balance as the dependent variable. The research instrument was tested for validity and reliability, which showed that all statement items were valid with a calculated r value greater than the table r value (0.232) and reliable with a Cronbach's Alpha value above 0.70. Data analysis techniques included descriptive statistics and linear regression analysis to test the influence between variables.  The results of the study indicate that students' strategies fall into the good category, as reflected in their ability to manage time, set priorities, and control academic stress. Students' life balance also falls into the good category, as demonstrated by their ability to complete academic assignments, carry out organizational activities proportionally, and maintain their health and personal lives. The results of the regression analysis show that students' strategies have a significant effect on life balance. These findings indicate that the better the strategies implemented by students, the higher the level of balance between academic, organizational, and personal life demands. This study has important implications for students, study program managers, and educational institutions in designing policies and support programs that encourage the creation of sustainable student life balance. Thus, self-management strategies are a key factor in improving the quality of academic experience and well-being of master's students.
MATHEMATICAL MODEL FOR DETECTING DIABETES IN BLOOD CELLS WITH THE INFLUENCE OF CORTISOL Sujarwo, Imam; Juhari, Juhari; Feby Ariyanti, Adelia Irma; Sutrisno, Sutrisno
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 20 No 2 (2026): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol20iss2pp1569-1582

Abstract

Diabetes is a disease that occurs when the body is unable to produce enough insulin or cannot effectively use the insulin it produces, resulting in an increase in blood glucose levels. One of the factors that affects the stability of glucose and insulin is the hormone cortisol, which is produced in response to stress. The purpose of this study is to develop a mathematical model of diabetes detection in blood cells by considering the influence of cortisol. The model is formulated as a system of linear differential equations and analyzed through equilibrium points and eigenvalue analysis. The results show that two eigenvalues form asymptotically stable spirals, while the other two are asymptotically stable nodes, indicating system stability. The novelty of this study lies in the inclusion of cortisol, which delays stabilization of glucose–insulin dynamics and provides a more realistic representation of physiological conditions under stress. A limitation of this study is that the model relies on simplifying assumptions without clinical validation. This research is expected to serve as a foundation for further model development by considering other regulatory factors, with implications for improving diabetes prevention and intervention strategies in stress-related conditions.
Inexact Generalized Gauss--Newton--CG for Binary Cross-Entropy Minimization Jamhuri, Mohammad; Sari, Silvi Puspita; Amiroch, Siti; Juhari, Juhari; Fitria, Vivi Aida
Jurnal Riset Mahasiswa Matematika Vol 5, No 2 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v5i2.34739

Abstract

Binary cross-entropy (BCE) minimization is a standard objective in probabilistic binary classification, yet practical training pipelines often rely on first-order methods whose performance can be sensitive to step-size choices and may require many iterations to reach low-loss solutions. This paper studies an inexact curvature-based solver that combines a (generalized) Gauss–Newton approximation with conjugate gradient (CG) inner iterations for minimizing the regularized BCE objective in full-batch logistic regression. At each outer iteration, the method computes a descent direction by approximately solving a damped Gauss–Newton system in a matrix-free manner via repeated products with X and X⊤, and terminates CG according to a relative-residual inexactness rule. Numerical experiments on three benchmark datasets show that the proposed Inexact GGN–CG can substantially reduce the number of outer iterations on smaller numerical data, while remaining competitive in predictive performance, and can improve both validation and test mean BCE on larger mixed-type data after one-hot encoding. In particular, on Adult Census Income the method achieves lower test mean BCE (0.3176 ± 0.0044) and higher F1-score (0.6623 ± 0.0066) than Adam and gradient descent under the same regularization-selection protocol, at the cost of additional CG work. These results highlight how damping and inexactness jointly govern the trade-off between curvature-solve effort, wall-clock time, and achieved BCE values in deterministic logistic-regression training.
Implementasi Vector Error Correction Model dalam Menganalisis Hubungan Tingkat Kesejahteraan Petani Antar Subsektor Ardiansyah, Zidni Permana; Harini, Sri; Juhari, Juhari
Jurnal Riset Mahasiswa Matematika Vol 5, No 2 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v5i2.34580

Abstract

This study aims to analyze the relationship between the level of farmers’ welfare between agricultural subsectors in Indonesia in the short and long term using the Vector Error Correction Model (VECM) approach. The data used includes the Farmer Exchange Rate (NTP) from five subsectors: Food, Hor ticulture, Plantations, Farms, and Fisheries. The results of the study show that there are differences in the relationship between subsectors in the short and long term. In the long term, Food NTP, Horti culture NTP, and Plantation NTP affect each other significantly, both positively and negatively, while Farms NTP and Fisheries NTP tend to have a more limited influence. On the other hand, short-term relationships are more influenced by NTP values from previous periods. The VECM model proved to be accurate in modeling the relationship between subsectors, with the Mean Absolute Percentage Error (MAPE) value of all subsectors being below 10%. In detail, MAPE for Food NTP is 2.18%, Horticulture NTP 4.18%, Plantation NTP 3.43%, Farms NTP 0.71%, and Fisheries NTP 0.86%. Thus, the VECM model is effectively used to analyze the dynamics of farmers’ welfare between subsectors in Indonesia.
Masjid Strategies in Improving Community Economy with Cooperatives (Case Study of Oman Al-Makmur Masjid): Strategi Masjid Dalam Meningkatkan Perekonomian Masyarakat Dengan Koperasi (Studi Kasus Masjid Oman Al-Makmur) Arif, Weldy; Habibi, Khairul; Juhari, Juhari
Perisai : Islamic Banking and Finance Journal Vol. 9 No. 2 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/perisai.v9i2.1863

Abstract

This study examines the role of the Oman Al Makmur Mosque in empowering the local community's economy through a sharia-based cooperative. The research focuses on assessing two main aspects: the mosque's role as a center of economic activity and the impact of the cooperative on the welfare of its members and the surrounding environment. A qualitative descriptive method was used, with data collected through in-depth interviews, observation, and documentation. The uniqueness of this study lies in its emphasis on the role of the mosque economy and the application of Qardhul Hasan in cooperative practices, which is rarely explored. The data were analyzed thematically to discuss issues of cooperative management, the implementation of the Qardhul Hasan mechanism, as well as the challenges and opportunities faced. This study also makes a significant contribution to the discourse on Islamic-based economic empowerment and provides practical guidance for mosque managers and financial institutions in supporting community-based MSMEs. The research results show that since its establishment in October 2022, the mosque cooperative has facilitated interest-free capital for more than 130 members to start and develop micro, small, and medium enterprises (MSMEs). Bank Indonesia and BPRS Hikmah Wakilah have strengthened access to capital. This research makes an important contribution to the discourse on Islamic-based economic empowerment and offers practical guidance for mosque managers and financial institutions in supporting community-based MSMEs. The uniqueness of this study lies in the emphasis on the role of the mosque economy and the application of Qardhul Hasan in cooperative practices, which are still rarely explored.
Cross-Sector Collaboration, Organizational Commitment, and Service Innovation in the Premarital Counseling Program Masri, Desi; Juhari, Juhari; Afrizal, Afrizal
Publik : (Jurnal Ilmu Administrasi) Vol 14, No 2 (2025): December 2025
Publisher : Universitas Muhammadiyah Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31314/pjia.14.2.405-420.2025

Abstract

Premarital counseling programs play a pivotal role in fostering the development of quality families and preventing stunting at its roots. However, the implementation of these programs faces significant challenges, including low community engagement, insufficient cross-sector synergy, and limited service innovation. This study aims to investigate the influence of cross-sector collaboration, organizational commitment, and service innovation on the effectiveness of premarital counseling programs, with community participation acting as a mediating variable. A quantitative research design was employed, utilizing a survey administered to prospective couples undergoing premarital counseling conducted by relevant officers in the Bangka Belitung Islands Province. Data were analyzed using Structural Equation Modeling (SEM)-Partial Least Squares (PLS) to assess the interrelationships among the variables. The findings indicate that cross-sector collaboration, organizational commitment, and service innovation significantly enhance community participation and, consequently, the effectiveness of premarital counseling programs. Furthermore, community participation was found to significantly mediate the relationship between the independent variables and program effectiveness, thereby amplifying their impact. This research contributes to the literature by advancing the understanding of the role of cross-sector collaboration, organizational commitment, and service innovation in public service delivery, and highlights the critical importance of strengthening community participation as a strategic approach to improving the effectiveness of premarital counseling programs in fostering quality families
Bilangan Kromatik Titik Graf Pembagi Nol Atas Modul Az-Zahra, Aisyah Dhifa; Jauhari, Mohammad Nafie; Juhari, Juhari
Jurnal Riset Mahasiswa Matematika Vol 5, No 3 (2026): Jurnal Riset Mahasiswa Matematika
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v5i3.39233

Abstract

Modul merupakan himpunan tak kosong yang dilengkapi dengan perkalian skalar oleh elemen-elemen dari suatu ring. Pembagi nol pada suatu modul adalah seluruh elemen pada modul yang merupakan hasil perkalian annihilator dengan modul tersebut. Himpunan pembagi nol dapat direpresentasikan dalam bentuk graf yang dapat disebut sebagai graf pembagi nol atas modul, yaitu graf yang titik-titiknya merupakan pembagi nol dan dua titik saling terhubung langsung apabila keduanya dikalikan hasilnya adalah nol. Bilangan kromatik titik adalah jumlah minimum warna yang digunakan untuk mewarnai seluruh titik pada graf. Tujuan penelitian ini adalah untuk menentukan rumus umum graf pembagi nol atas modul. Pada penelitian ini, modul yang digunakan adalah modul  dan  atas ring  dengan  dan adalah bilangan prima. Dari hasil penelitian ini, dapat disimpulkan bahwa bilangan kromatik titik graf pembagi nol atas modul  dan  adalah 2, sedangkan bilangan kromatik titik graf pembagi nol atas modul  adalah .
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 Ardiansyah, Zidni Permana Ari Kusumastuti Arif, Weldy Az-Zahra, Aisyah Dhifa 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 Farina, Tri Fatin Dzahabiy, Amirah Salsabila Syahirah Fauzi Fauzi Feby Ariyanti, Adelia Irma Fibrianto, Ary Fikrina, Zulfa Akfi Gunawan, Arifin Faqih Habibi, Khairul Hairur Rahman Hakim , Zainal Hamdan Hamdan Hasanah, Sofiatul Hasanuddin Hasanuddin Hidayati, Ummunisa Holanda, Sella Husna, Faridatul Imam Sujarwo Iskandar Iskandar Juhaini, Juhaini Karinina, Olivia 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 Pajlia, Rini 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 Rusdiana, Eva Agus Safitri, Alisa Ayu Said Amirulkamar Sapira, Bella Saputra, Luthfi Darma Sari, Fitri Nofita Sari, Silvi Puspita shidieq, faris majdie Siti Amiroch, Siti Sofia, Wise Ahmad Sri Harini Sugianto, Efendi Suhardi Suhardi Sukroni, Achmad Faiz Sumiati Sumiati Susanto, Ady Susanto, Deki Sutrisno, Sutrisno Syafi'ah, Nurus Taufik Iskandar Triyono, Gandung Tunggal Saputra, Tri Aji Turmudi Ulung Pribadi, Ulung Ulya, Diah Mariatul Usman Pagalay Utami, Febry Noorfitriana Vivi Aida Fitria Wahyuni, Diah Maghfiroh Wan, Tjik Yuliana, Rossima Eva Yuri Is, Manaf Zakaria, Nor Balkish Zakariya, Husni Zufriady, Zufriady