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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI Jurnal Daya Matematis Delta-Pi : Jurnal Matematika dan Pendidikan Matematika Edumatsains Sinkron : Jurnal dan Penelitian Teknik Informatika Justek : Jurnal Sains Dan Teknologi JTAM (Jurnal Teori dan Aplikasi Matematika) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Jurnal Sisfokom (Sistem Informasi dan Komputer) Zeta - Math Journal Zero : Jurnal Sains, Matematika, dan Terapan JISTech (Journal of Islamic Science and Technology) Jurnal Ilmiah Media Sisfo JURNAL MathEdu (Mathematic Education Journal) JOURNAL OF SCIENCE AND SOCIAL RESEARCH Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Symmetry: Pasundan Journal of Research in Mathematics Learning and Education M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Edugama: Jurnal Kependidikan dan Sosial Keagamaan Mawaizh : Jurnal Dakwah dan Pengembangan Sosial Kemanusiaan Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Imajiner: Jurnal Matematika dan Pendidikan Matematika Jurnal Absis : Jurnal Pendidikan Matematika dan Matematika Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Jurnal Teknik Informatika C.I.T. Medicom INFOKUM Takammul : Jurnal Studi Gender dan Islam Serta Perlindungan Anak Majalah Ilmiah Matematika dan Statistika (MIMS) Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Journal of Computer Networks, Architecture and High Performance Computing Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) Asy Syar'iyyah: Jurnal Ilmu Syari'ah dan Perbankan Islam Asimetris: Pendidikan Matematika dan Sains Tawshiyah: Jurnal Sosial Keagamaan dan Pendidikan Islam Leibniz: Jurnal Matematika Jurnal Ilmiah Mahasiswa Perbankan Syariah (JIMPA) Journal of Mathematics and Scientific Computing With Applications International Journal of Science and Society (IJSOC) Jurnal Pijar MIPA East Asian Journal of Multidisciplinary Research (EAJMR) Jurnal Informatika Teknologi dan Sains (Jinteks) JYRS: Journal of Youth Research and Studies Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Journal Keperawatan Abdimas Indonesian Journal JEBI (Jurnal Ekonomi dan Bisnis Islam) International Conference on Sciences Development and Technology Jurnal Rumpun Ilmu Kesehatan Klinik: Jurnal Ilmiah Kedokteran dan Kesehatan Journal of Educational Innovation and Public Health Jurnal Ilmu Kedokteran dan Kesehatan Indonesia Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi Sabangka Abdimas Jurnal Pengabdian Masyarakat Sabangka Quadratic: Journal of Innovation and Technology in Mathematics and Mathematics Education Jurnal Penelitian Progresif (JPP) Jurnal Pengabdian Masyarakat Ekonomi dan Bisnis Digital Jurnal Kebijakan Pembangunan Daerah (JKPD) Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa Society Al-bank: Journal of Islamic Banking and Finance Semeru Jurnal Pengabdian Masyarakat Jurnal Jendela Matematika Fathana: Jurnal Psikologi Ar-Raniry Madania: Jurnal Kajian Keislaman Jurnal Ilmu Kedokteran dan Kesehatan Indonesia Journal of Industrial Engineering and Management
Hendra Cipta
Universitas Islam Negeri Sumatera Utara
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Analisis Hubungan Surat Masuk terhadap Penerbitan Surat Keluar (SPT dan SPPD Karyawan) di Kantor Bupati Langkat Menggunakan Metode Regresi Linear Erika Handayani Br Siahaan; Fadila Inka Syahfitri; Rico Pradana Dita; Rizq Alwi Marpaung; Hendra Cipta
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa Vol. 3 No. 3 (2025): Juni: Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/bilangan.v3i3.665

Abstract

This study aims to determine the relationship between the number of incoming letters and outgoing letters in the form of Assignment Letters (SPT) and Official Travel Orders (SPPD). The research employs a quantitative approach using simple linear regression analysis, with data collected through direct observation and official document records. The findings indicate a positive relationship between incoming and outgoing letters; however, the relationship is not statistically significant (p-value = 0.068). The coefficient of determination (R²) is 0.358, meaning that 35.8% of the variation in outgoing letters is influenced by incoming letters, while the rest is affected by other factors. These results underscore the need for stronger administrative management systems to improve bureaucratic efficiency and accountability.
Pendekatan Fuzzy Goal Programming untuk Meningkatkan Efisiensi Produksi UMKM Furniture Marpaung, Rizq Alwi; Cipta, Hendra
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 7, No 4 (2025): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v7i4.23869

Abstract

UMKM Royal Jepara menghadapi permasalahan dalam perencanaan produksi yang melibatkan tujuan bertentangan, yaitu memaksimalkan pendapatan dan meminimalkan biaya bahan baku di tengah keterbatasan sumber daya. Penelitian ini bertujuan menyusun perencanaan produksi optimal menggunakan metode Fuzzy Goal Programming (FGP), yang memadukan pendekatan Goal Programming dan logika fuzzy. Data diperoleh dari laporan penjualan dan penggunaan bahan baku. Peramalan dilakukan menggunakan metode moving average 3 bulan. Model matematis disusun dengan dua fungsi tujuan dan delapan kendala bahan baku. Fungsi keanggotaan fuzzy dibentuk untuk mengukur tingkat pencapaian terhadap target pendapatan minimal dan batas biaya maksimal. Hasil menunjukkan bahwa pendapatan mencapai Rp 1.917.600.000 dan biaya bahan baku Rp 779.400.000, dengan tingkat kepuasan , yang berarti seluruh tujuan tercapai optimal. FGP terbukti efektif membantu UMKM merencanakan produksi secara efisien dan adaptif terhadap keterbatasan.
FUZZY MAMDANI FORECASTING OF BLOOD BAG SUPPLY AT INDONESIAN RED CROSS BLOOD IN DELI SERDANG REGENCY UNIT Ika Silvia Ramadani; Rina Filia Sari; Hendra Cipta
INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

An increase in population will cause an increase in the amount of processed blood reserves. Therefore, it is necessary to forecast the amount of production within a certain period of time to see the number of blood bags that may be needed in order to meet demand correctly and in the appropriate amount. The method used is Mamdani fuzzy with data sourced from the Indonesian Red Cross Blood Unit Deli Serdang Regency from January 2019 to January 2020. This study shows that the Mamdani District fuzzy method can be implemented for forecasting the production of blood bags in January and February 2020.
Bayesian Model Averaging (BMA) Modeling In The Analysis Of Factor Affecting Childhood Pneumonia Cases In Medan City Salsalina, Iren; Cipta, Hendra
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 3 (2025): Mathline : Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v10i3.998

Abstract

Pneumonia is one of the leading causes of death among toddlers worldwide, including in Indonesia. Medan, as a densely populated city, faces significant challenges in managing pneumonia in toddlers, with a still low case detection rate. The high incidence of pneumonia is influenced by various risk factors such as environmental density, air pollution, malnutrition, smoking habits, and lack of public awareness. Therefore, this study aims to identify the most influential factors affecting the incidence of pneumonia in toddlers in Medan City. This study uses the Bayesian Model Averaging (BMA) approach to address model uncertainty and produce more accurate estimates by considering various possible combinations of risk factors. The BMA method is considered superior in the context of complex health data because it can probabilistically combine information from multiple models. The results of this study are expected to provide data-based recommendations for more effective strategies for the prevention and control of pneumonia in toddlers in densely populated urban areas such as Medan City.
Penjadwalan Tenaga Kerja Pada Hotel Menara Lexus Menggunakan Algoritma Genetika Rohima Almahuwanah; Sajaratud Dur; Hendra Cipta
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 3 No. 1 (2024): April : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.2714

Abstract

Labor scheduling is allocating human resources to work stations according to needs. To increase productivity, companies must schedule labor optimally. In allocating labor, the Hotel Menara Lexus company has implemented labor scheduling with 3 work shifts, namely morning, afternoon and night. Because scheduling is still made manually, it is possible for schedule "collisions" to occur and there is no fairness in the distribution of shifts to each employee. To solve this problem, an appropriate algorithm is needed so that the scheduling process can run optimally. The application of genetic algorithm methods in scheduling problems is able to produce good solutions using chromosome representation, determining objective function values, fitness evaluation, determining probability function values, selection process using Roulette Wheel, crossover method using one cut-point crossover, and mutation at the above level. 0.5 can then be generated. From parameter testing, the results obtained  
PENYULUHAN DAN PEMBUATAN ECO ENZYME SEBAGAI UPAYA PEMANFAATAN LIMBAH ORGANIK DI DESA KARYA MAJU Nasrul Mahruf Aznawi; Nugraha Pratama Ramadhan; Ok Muhammad Zikri Fadillah; Windu Asmoro; Muhammad Irham Setiadi; Cipta, Hendra
Jurnal Pengabdian Masyarakat Sabangka Vol 4 No 05 (2025): Jurnal Pengabdian Masyarakat Sabangka
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/sabangka.v4i05.1749

Abstract

Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan kesadaran dan keterampilan masyarakat Desa Karya Maju dalam mengelola limbah organik melalui penyuluhan dan praktik pembuatan eco enzyme. Metode yang digunakan adalah pendekatan partisipatif dengan tahapan persiapan, penyuluhan, dan praktik langsung pembuatan eco enzyme bersama warga. Hasil kegiatan menunjukkan adanya peningkatan pengetahuan dan sikap masyarakat, dari sebelumnya membuang atau membakar sampah organik menjadi mencoba memfermentasikannya. Produk eco enzyme yang dihasilkan berpotensi dimanfaatkan sebagai pupuk cair, pembersih rumah tangga, dan pengusir bau ramah lingkungan. Selain memberi manfaat ekologis dengan mengurangi volume sampah organik dan emisi gas rumah kaca, kegiatan ini juga berdampak sosial-ekonomi melalui penghematan biaya rumah tangga serta peluang pemberdayaan masyarakat. Dengan demikian, program ini efektif sebagai model alternatif pengelolaan sampah organik berkelanjutan di tingkat desa.
Maksimasi Keuntungan Layanan Jasa Be Clean Laundry Dengan Menerapkan Metode Branch And Bound Syahputra, Bayu Teza; Lubis, Riri Syafitri; Cipta, Hendra
Zeta - Math Journal Vol 6 No 2 (2021): November
Publisher : Universitas Islam Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31102/zeta.2021.6.2.1-5

Abstract

The purpose of this research is to find the maximize benefits from Be Clean Laundry business. In optimize laundry business by looking at the limited resources of the business used branch and bound method. Using the branch and bound method assisted by QM software in more optimal laundry, coat 53 kg, doll 32 kg, blanket 95 kg, bedcover 105 kg, gordyn 91 kg, and clothes 805 kg with a profit of Rp. 4.027.000, while the previous profit based on estimate made by the laundry Owner of Rp. 4.000.000 increase of 0,7 %.
Penentuan Rute Transportasi Kendaraan Umum Kota Medan Dengan Menggunakan Nearest Neighbor Method Dan Closed Insertion Method Putra, Fani Darmawan; Rakhmawati, Fibri; Cipta, Hendra
Zeta - Math Journal Vol 6 No 2 (2021): November
Publisher : Universitas Islam Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31102/zeta.2021.6.2.6-10

Abstract

ABSTRACT The purpose of this research to arrange the route of the Medan public transportation system into a graph and find the closest route using a graph. The data used are data on travel routes and travel times public transportation for Terminal Pinang Baris to Terminal Amplas. The results obtained are Medan City Public Transport system namely KPUM 64, RMC 120 and U-MORINA 138 can be represented in graph with terminal as a vertex and the walk to connecting each terminal as edge. The calculation results using the nearest neighbor method and closed insertion method can produce different routes between KPUM 48, RMC 120 and U-MORINA 138 which have been operating now. Determining the shortest route by considering the shortest distance does not get jammed. Keywords: Public Transportation, Routing Graph, Nearest Neighbor Method, Closed Insertion Method.
Faktor Determinan Profitabilitas Unit Usaha Syariah Di Indonesia Tahun 2018-2022 Muliana, Muliana; Destiana, Yolanda; Cipta, Hendra
JYRS: Journal of Youth Research and Studies Vol. 6 No. 1 (2025): Jurnal JYRS Juni 2025
Publisher : FAKULTAS SYARIAH DAN EKONOMI ISLAM IAIN SYAIKH ABDURRAHMAN SIDDIK BANGKA BELITUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32923/jyrs.v6i1.5916

Abstract

This study aims to find out how simultaneously Non-Performing Financing (NPF), Operating Costs, Operating Income (BOPO) and Financing to Deposit Ratio (FDR) have a significant effect on the Profitability of Sharia Business Units in Indonesia in 2018-2022. The variables of this study consist of independent variables and dependent variables. The independent variables are Non Performing Financing (NPF), Operating Expenses, Operating Income (BOPO) and Financing to Deposit Ratio (FDR) and the dependent variable Return On Asset (ROA). This type of research is quantitative descriptive using multiple linear regression tests. This approach is carried out by deductive thinking to find hypotheses. The data collection technique of this study is documentation. The data analysis techniques used are descriptive statistical analysis, classical assumption tests, hypothesis tests using the SPPS software version 26 program tools. The results of this study show that the NPF independent variable has no effect on ROA based on the tcount > ttable = -2.141 > 2.056, with a significant value = 0.042 < 0.05. The BOPO variable had no effect on ROA based on the tcount < ttable = -1.465 < 2.056 with a significant value = 0.155 > 0.05. The FDR variable has an effect on ROA based on the tcount < ttable = 3.339 > 2.056, with a significant value = 0.003 < 0.05. NPF, BOPO and FDR simultaneously have a significant effect on the Profitability of Sharia Business Units in Indonesia in 2018-2022. Based on the value of Fcount > Ftable = 5.336 > 2.29, with a significant value = 0.005 > 0.05.
Faktor Determinasi Pembiayaan Berbasis Utang pada Bank Syariah di Indonesia Tahun 2018-2022 Agustian, Nandi; Suhendra, Darmiko; Cipta, Hendra; Fahlevi, Mahfudz Reza
Jurnal Ilmiah Mahasiswa Perbankan Syariah (JIMPA) Vol 5 No 2 (2025): Jurnal Ilmiah Mahasiswa Perbankan Syariah (JIMPA) - September 2025
Publisher : Sekolah Tinggi Ekonomi dan Bisnis Syariah (STEBIS) Indo Global Mandiri Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36908/jimpa.v5i2.597

Abstract

Penelitian ini bertujuan menganalisis pengaruh efisiensi biaya, return on assets (ROA), dan inflasi terhadap pembiayaan berbasis utang pada Bank Umum Syariah di Indonesia periode 2018–2022. Studi ini menggunakan pendekatan kuantitatif dengan data panel dan regresi linier berganda, berdasarkan laporan keuangan sepuluh Bank Umum Syariah serta data inflasi dari Bank Indonesia. Hasil analisis menunjukkan bahwa secara parsial, ROA berpengaruh signifikan terhadap pembiayaan berbasis utang, sedangkan efisiensi biaya dan inflasi tidak berpengaruh signifikan. Secara simultan, ketiga variabel tersebut tidak menunjukkan pengaruh yang signifikan. Temuan ini memberikan gambaran mengenai faktor internal dan eksternal yang memengaruhi strategi penyaluran pembiayaan berbasis utang oleh Bank Umum Syariah.
Co-Authors Adek Kumala Sari Afrina Sinaga, Serly Agustian, Nandi Ahmad Ali Nasution Ahmad Fadholi Aisy Al-Khansa Amalia, Feby Ayu Ambia Nurdin Amiruddin Amiruddin Amiruddin Amiruddin Apriza, Muhammad Amizaeni Arianti, Mei Yunina Arini Arini Aulia, Surayya Ayu Hariati Ayunda, Afrila Barmawi Barmawi, Barmawi Batubara, Fikri Husin Br. Munte, Rahma Nadira Breghi, Willy Bukhari Bukhari Clara, Nur Cellia Cynthia, Mayang Modelina Dalimunthe, Aldiansah Desiana Desiana, Desiana Destiana, Yolanda dewi, mutia hatina Dian Nugraha Dimas Sunanta Dongoran, Raisha Zuhaira Erika Handayani Br Siahaan Fadila Inka Syahfitri Fahlevi, Mahfudz Reza Fauzi Aldina Fauzi Aldina Fernando, Anjas Fitrahadi, Agung Fitriani Gurusinga, Ditha Aulia Gusti Arya Wicaksana Handrianto, Michael Harahap, Baran Enda Hari Kurniawan Harri Santoso Hasibuan, Hani Maulida Hasibuan, Mhd Panerangan Hasibuan, Muhammad Afif Fauzi Hasyim Lubis Hatamar, Hatamar Hazizah, Salsabillah Hwihanus Ida Ayu Putu Sri Widnyani Ika Silvia Ramadani Ilham Syaputra Indra Willy Juliansya Indrawati Indrawati Ir Zulkarnain, Ayu Najmita Binti Irvani, Ahmad Islamiyah, Annisa Rizka Ismail Husein, Ismail Isnani Nurul Deva Kana Nurrohma Khairani, Sabila Lathifah Hanum, Lathifah Lia Lestari Linna Syahputri Linna Syahputri Makmun, Sukran Marina Ulfah Mario Bagus Sanjaya Marpaung, Rizq Alwi Matondang, Agnes Febrianti Mei Yunina Arianti Meilani, Reka Mhd Ikhsan Rifki Mirna Rahmah Lubis Muhammad Alfi Syahri Harahap Muhammad Haikal Muhammad Haikal Muhammad Irham Setiadi Muhammad Muhammad Muliana, Muliana Muslim Mutadhahadi Mutadhahadi Nasrul Mahruf Aznawi Nasution, Faisal Anshori Nasution, Hamidah Nasution, Hanifa Mardiatun Nasution, Mutiah Ningsi, Ria Sagita Nugraha Pratama Ramadhan Nurdin, Ambia Nurfebriyanti, Endah Nurhalimah Ritonga Nurhaliza Nurhaliza Nurhaliza Nurhaliza Nurjannah Nurjannah Nurma Sari Nurul Aprilla Rizki Nurul Huda Prasetya Ok Muhammad Zikri Fadillah oktavia handayani Panca Taufik Kurahman Paramita, Esti Puspita, Reni Putra, Fani Darmawan Putri Harahap, Rahmelia Rahmad Julianto Rahmad Julianto Rahmadani, Artika Rakhmawati, Fibri Rezki Azmi Ricka Afriani Ricky Dear Fitria Ricky Dear Fitria Rico Pradana Dita Rima Aprilia Rima Aprilia Rima Aprilia Rina Filia Sari Rina Filia Sari, Rina Filia Rina Widyasari Rina Widyasari Rina Widyasari Rina Widyasari Riri Syafitri Lubis Rizka Auva Rafiqi Rizky, Aldi Rizq Alwi Marpaung Rohima Almahuwanah Rosnidawati Sajaratud Dur Sajaratud Dur Sajaratud Dur Sajaratud Dur, Sajaratud Salsalina, Iren SANAINI, SANAINI Sartika Dewi Sembiring, Tesya Yunita Setyorini, Winarti Sianipar, Putri Nopriani Sinaga, Melly Nia Fajriani Siregar, Machrani Adi Putri Siti Khadijah Laoly SRI RAHAYU Suhardina Rangkuti Suhendra, Darmiko Syahfitri, Nenna Irsa Syahputra, Bayu Teza Syahputri, Linna Teuku Maulana Uci Rahmadani Ulfa, Khoirina Utami, Ristika Dian Wenny Marta Dolok Saribu widya panjaitan Widyasari, Rina Wilia Usna Winda Risfani Nst Windu Asmoro Wita Sari, Eka Zakirman, Al Fakhri Zakiyuddin Zakiyuddin Zakiyuddin Zakiyuddin Zamzami Zamzami Zamzami Zamzami Zulaika, Zulaika