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All Journal CAUCHY: Jurnal Matematika Murni dan Aplikasi Madrasah: Jurnal Pendidikan dan Pembelajaran Dasar Science and Technology Indonesia BAREKENG: Jurnal Ilmu Matematika dan Terapan Jurnal Riset Mahasiswa Matematika Journal of Research on Community Engagement
Hairur Rahman
Universitas Muhamadiyah Malang
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Implementasi Backpropagation Neural Network pada Prediksi Jumlah Penjualan Toyota Avanza di Indonesia Mufinnun, Nur Fatin; Rahman, Hairur; Jauhari, Mohammad Nafie
Jurnal Riset Mahasiswa Matematika Vol 1, No 6 (2022): 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.v1i6.14594

Abstract

Prediction is a branch of science that is used to predict events that may occur in the future based on past events. One of the developed prediction methods, Backpropagation Neural Network, a method that has a good level of effectiveness. This study aims to determine the model and the accuracy of the model in predicting the total sales of the Toyota Avanza and to find out the results of sales predictions for the next 12 months by analyzing the number of sales in January 2010 to October 2021. The prediction model for the number of Toyota Avanza sales using the Backpropagation Neural Network is 12-13-1, where there are 12 variables in the input layer, 13 variables in the hidden layer and 1 variable in the output layer with a learning rate value of 0.5 and momentum 0. The predictions for the number of Toyota Avanza sales for 12 months are at an average upper limit of 6215 and an average lower limit of 3415 with a MAPE value of 9,39135%, so that the model can be said to be very good. 
Ketaksamaan Operator Integral Fraksional yang Diperumum pada Ruang Morrey Tak Homogen yang Diperumum Azizah, Siti Rohmah; Rahman, Hairur; Nasichuddin, Achmad
Jurnal Riset Mahasiswa Matematika Vol 3, No 5 (2024): 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.v3i5.16970

Abstract

A Fractional integral operator is one of the operators in mathematical analysis. Fractional integral operator itself maps any real-valued function into the integral form  of the division of the at function. One of the expansion of fractional integral operator is generalized fractional integral operator. Morrey space is an extension of Lebesgue space. Morrey space is the set of all Lebesgue measurable functions, whose norm is finite over Morrey space. In this study, we will discuss the inequalities of the generalized fractional integral operator on a generalized non-homogeneous Morrey space. We proved of this inequality using the Chebyshev inequality and the Holder inequality.
Analisis Konstanta Euler-Mascheroni yang Diperumum pada Deret Harmonik Rahman, Raisha Inayah; Rahman, Hairur; Herawati, Erna
Jurnal Riset Mahasiswa Matematika Vol 3, No 2 (2023): 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.v3i2.22447

Abstract

The generalized Euler-Mascheroni constant analyzes functions or sequences with specific parameters in various scientific fields. As scientific knowledge advances, the generalized Euler-Mascheroni constant continues to undergo renewal. One example is found in "On Generalized Euler-Mascheroni Constants" by G. Abe-I-Kpeng, M.M. Iddirisu, and K. Nantomah in 2022. The purpose of this study is to analyze the relationship between the generalized Euler-Mascheroni constant and harmonic series, as well as to examine its connection with signed count permutations. The analysis involves decomposing the Riemann Zeta function and using Stirling numbers of the first kind. The methodology employed in this study was literature research. This study yields new theorems concerning the generalized Euler-Mascheroni constant. 
Implementasi Data Mining Menggunakan Algoritma C4.5 pada Klasifikasi Penjualan Hijab Husna, Faridatul; Rahman, Hairur; Juhari, Juhari
Jurnal Riset Mahasiswa Matematika Vol 2, No 2 (2022): 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.v2i2.14891

Abstract

Indonesia is known as a country with a majority Muslim population, this makes the need for clothing in Indonesia must also pay attention to the criteria for Muslim clothing, one of which is the hijab. Business developments in the fashion world, especially hijab, have become a trend setter at this time so that the large amount of data in the fashion business world creates conditions where there are businesspeople who have a lot of data but lack of information from that data. To deal with these conditions, it is necessary to classify the data. A classification is a process to find the same properties in a data set to be classified into different classes.  One of the classification methods is the Decision tree using the C4.5 Algorithm.  This research aims to determine the model and the accuracy of the C4.5 algorithm in classifying hijab sales from several hijab brands.  The Decision tree model is obtained using the C4.5 algorithm with the first root being the price attribute, where the first root is the attribute that most affected the sale of the hijab.  The result of calculating the accuracy value is 87% so that the Decision tree model and the classification process using the C4.5 Algorithm are classified as good. This research is expected to help businesspeople in the fashion sector, especially hijab, to find out the factors that influence consumer interest in a hijab product.
Syarat Cukup Ketaksamaan Hӧlder dan Ketaksamaan Minkowski di Perumuman Ruang Morrey Ummah, Nahdliyatul; Rahman, Hairur; Ismiarti, Dewi
Jurnal Riset Mahasiswa Matematika Vol 1, No 3 (2022): 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.v1i3.14369

Abstract

The purpose of this research is to show the sufficient condition for Hӧlder inequality and Minkowski inequality in generalization of Morrey space and its weak space, namely generalization of weak Morrey space. This research focuses on the application of Hӧlder inequality and Minkowski inequality in generalization of Morrey space and generalization of weak Morrey space based on the characteristics of the two spaces in the set of n-dimensional real numbers.
Generalized Hölder Inequality in Herz-Morrey Spaces with Variable Exponent Rahman, Hairur; Karim, Corina
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.637-641

Abstract

The paper investigates the conditions for the generalized Hölder’s inequality with a variable exponent in Herz-Morrey spaces. The main results are based on the exponent functions p(·) and α(·) . The proof of the first main result using the generalized Hölder’s inequality in Lebesgue spaces. The second main result of the paper is related to the weak space of the generalized Hölder’s inequality with a variable exponent in Herz-Morrey spaces. The theorems state the equivalence of certain conditions for the inequality. Mathematical proofs and analysis are providing to support the presented results for findings contribute to the understanding of Hölder’s inequalities in variable exponent spaces and their applications in Herz-Morrey spaces.
Peningkatan Pola Asuh Melalui Penyuluhan Gizi dan Kesehatan di Kelurahan Samaan, Kota Malang Harini, Sri; Jannah, Akyunul; Mulyanto, Angga Dwi; Rahman, Hairur
JRCE (Journal of Research on Community Engagement) Vol 6, No 1 (2024): Journal of Research on Community Engagement
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrce.v6i1.29285

Abstract

Nutrition and health counseling in Samaan Village, Malang City, aims to increase parents' understanding of the importance of proper parenting in supporting child development, especially in the context of stunting prevention. Through a Participatory Action Research (PAR) approach, this activity involved posyandu cadres and the PKK mobilizing team in designing and implementing counseling. The materials presented focused on balanced nutrition, psychological stimulation, and the importance of routine health checks for toddlers. The results of the counseling showed an increase in parents' understanding of the importance of nutrition in supporting children's physical and cognitive development, as well as the application of better parenting.
The Boundedness of Generalized Fractional Integral Operators on Small Morrey Spaces Syaifudin, Rizky Aziz; Karim, Corina; Marjono, Marjono; Rahman, Hairur
CAUCHY: Jurnal Matematika Murni dan Aplikasi Vol 9, No 1 (2024): 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/ca.v9i1.24309

Abstract

The small Morrey space is the set of locally Lebesgue integrable functions with norm defined supremum over radius of ball . This paper aims to prove the boundedness properties of the generality of fractional integral operators in small Morrey spaces using Hedberg-type inequality.  The first, in this paper will be discuss to prove Hedberg-type inequality on small Morrey spaces using dyadic decomposition, H lder inequality, and doubling condition. Furthermore, by using the inequality, it can be proven that the boundedness of generalized fractional integral operators on small Morrey spaces.
PARTIAL LEAST SQUARES - MULTIGROUP ANALYSIS ON THE EFFECT OF LEADERSHIP ON WORK CULTURE AND LECTURER PERFORMANCE Rahman, Hairur; Dwi Mulyanto, Angga; Harini, Sri; Rozi, Fachrur; Widjanarko Otok, Bambang; Dwi Trijoyo Purnomo, Jerry
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 20 No 1 (2026): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol20iss1pp0041-0054

Abstract

Higher education institutions depend on leadership to build their organizational culture and achieve better employee performance. However, there remains limited understanding of how the impact of leadership may vary across institutional contexts. This research employs Partial Least Squares - Multigroup Analysis (PLS-MGA) to explore the effects of leadership on work culture and lecturer performance in two Indonesian universities: UIN Maulana Malik Ibrahim and IAIN Ponorogo. A multistage random sampling of 272 lecturers was conducted. The methodological approach allowed for a robust comparative analysis between the institutions. The results reveal that leadership exhibits powerful positive relationships with work culture and lecturer performance in both institutions. Leadership explains 38.7% of work culture variability at IAIN Ponorogo, but only 18.6% at UIN Maulana Malik Ibrahim. These findings underscore the need for context-sensitive leadership development strategies and provide a foundational contribution for future research in higher education leadership and performance.
Co-Authors Akyunul Jannah Amanatul Husnia Angga Dwi Mulyanto Ari Kusumastuti Azizah, Siti Rohmah Ba'is, Mohamad Abdul Bambang Widjanarko Otok Dwi Trijoyo Purnomo, Jerry Erna Herawati, Erna Fachrur Rozi Husna, Faridatul Imam Sujarwo Ismiarti, Dewi Juhari Juhari, Juhari Karim, Corina Marjono Marjono Mohammad Nafie Jauhari Mufinnun, Nur Fatin Nasichuddin, Achmad Nisa', Hilwin Nisa, Khoirotun Putri, Safira Nur Aulia Rahman, Raisha Inayah Sri Harini Sri Utami Syaifudin, Rizky Aziz Ummah, Nahdliyatul