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All Journal Jurnal Mahasiswa Matematika AKSIOMA Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Matematika: MANTIK Jurnal Matematika Sains dan Teknologi Jurnal SOLMA JOURNAL OF APPLIED INFORMATICS AND COMPUTING Mathvision : Jurnal Matematika Jurnal Teknologi Informasi dan Terapan (J-TIT) Perdikan: Journal of Community Engagement Jurnal Abdi Insani MATHunesa: Jurnal Ilmiah Matematika KARANGAN Journal Jurnal Matematika dan Sains (JMS) Jurnal Pendidikan MIPA Karaton: Jurnal Riset dan Inovasi Sumenep Journal of Advanced Vocational Information and Communication Technology (JAVICT)
Ahmad Khairul Umam
Politeknik Elektronika Negeri Surabaya
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences Other

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BEBERAPA GENERALISASI TEOREMA TITIK TETAP CARISTI UNTUK JARAK-ω Ahmad Khairul Umam; Pukky Tetralian Bantining Ngastiti; Ahmad Isro'il
MathVisioN Vol 6 No 2 (2024): September 2024
Publisher : Prodi Matematika FMIPA Unirow Tuban

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55719/mv.v6i2.1280

Abstract

Caristi’s fixed point theorem is generalization of Banach’s fixed point. Banach’s fixed point theorem guarantee existence and uniqueness fixed point in complete space and contractive function. Caristi’s fixed point uses function f:X→X and lower semicontinuous function ψ:X→[0,∞). In this paper, we discuss some generalization of Caristi’s fixed point theorem. We also use ω-distance as distance function. We discuss function T:X→2^X where 2^X are collection of all nonempty subsets of X. And then we use function c:[0,∞)→(0,∞) that is nondecreasing function.
EKSISTENSI DAN KETUNGGALAN TITIK TETAP HARDY DI RUANG B-METRIK LENGKAP Ahmad Khairul Umam; Pukky Tetralian Bantining Ngastiti; Krisna Adilia Daniswara; Zaqiyatus Shahadah; Amanda Fatma Muamalah
MathVisioN Vol 7 No 1 (2025): Maret 2025
Publisher : Prodi Matematika FMIPA Unirow Tuban

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55719/mv.v7i1.1496

Abstract

The fixed point is useful not only to solve problems in linear equation and differential equation, but also integral equation. The fixed point theorem of Hardy is generalization of the fixed point theorem of Reich. The metric space can be generalized to other spaces. b-metric space is one of generalization of metric space. Axiom of triangle inequality in metric space is not the same as axiom of triangle inequality in b-metric space. In this research, we discuss about fixed point theorem of Hardy in metric space. Besides that, we also discuss about fixed point of Hardy in complete b-metric space. Before proving that theorem, we prove lemma that supports the proof of theorem. We prove not only existance, but also uniqueness of fixed point from a function defined in complete b-metric space.
Using Augmented Reality-Based e-Book for Improving Students’ Learning Motivation in Analytical Geometry Course Ngastiti, Pukky Tetralian Bantining; Umam, Ahmad Khairul; Alfan, Aris
Jurnal Pendidikan MIPA Vol 23, No 2 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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Abstract

In the development of science and technology in the world of education, students need to be introduced to a variety of varied learning media, one of which is the use of augmented reality-based e-books. The ability to learn analytic geometry requires systematic, logical and critical thinking that can be developed through learning. The purpose of this study is to test the increase in learning motivation using augmented reality based e-book media in analytic geometry course. The method in this study using ADDIE which consists of five stages which include analysis, design, development, implementation and evaluation. The result of the research is that the average result of the questionnaire given by students from various aspects of the assessment is 86%. Meanwhile, based on learning outcomes, there is a difference in learning outcomes between midterm exam score and the e-book score, which is 9.18 and based on the results of the analysis using SPSS on the t-test, it is found that tcount = 4.768 > ttable = 2.015. From these results, it can be concluded that augmented reality-based e-book media in analytic geometry courses can motivate students as a technology based learning medium for students of mathematics study program at Universitas Billfath. Keywords: augmented reality, geometry analytic, e-book DOI: http://dx.doi.org/10.23960/jpmipa/v23i2.pp486-495
PEMANFAATAN PYTHON DASAR BAGI CIVITAS AKADEMIKA UNIVERSITAS BILLFATH Yaqin, Ainul; Anggita, Sharazita Dyah; Umam, Ahmad Khairul; Daniswara, Krisna Adilia
Jurnal Abdi Insani Vol 11 No 1 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i1.1342

Abstract

In an increasingly advanced digital era, academic institutions around the world face large amounts of data that can be used to improve performance effectiveness. Through Data Science, data types, assumptions and analysis will be visible using one of the languages that is considered easy to learn, namely Python. The aim of this activity is to provide education and training to the Billfath University academic community regarding the use of Data Science using the Python programming language. This community service activity was carried out with an online webinar Introduction to Basic Python for Beginners. The webinar that will be held will discuss the basics of using tools using Jupyter for participants. Based on the priority problems found, activities were carried out to educate the Billfath University academic community about the importance of implementing data science in their respective fields of study. The basic material provided includes how to install and run the tools. The various libraries contained in it are also explained. Other basic materials provided are Data Profiling, Data Scaling, Data Correlation, Data Visualization and Training. The feedback given by the participants was quite positive as evidenced by the enthusiasm in the question and answer session accounting for more than 25% of the total participants. Community service activities in the form of a Python Training Webinar for Beginners were able to educate the Billfath University academic community about the importance of implementing data science in their respective fields of study. In the future, it is hoped that Billfath University will be able to increase the skills of its resources in the field of data science by holding more technical workshops for participants.
Optimasi Identitas Visual Empu Keris melalui Totem signage untuk Meningkatkan Daya Tarik Desa Wisata Keris Aeng Tong Tong Sumenep Putra, Deni Fardiansyah; Hujairi, Ahmad Walid; Umam, Ahmad Khairul; Prasetyo, Joko; Hari, Nirwana Haidar; Agustien, Lusiana; Khoironi, Khoironi; Kurli, Anis
Jurnal SOLMA Vol. 14 No. 3 (2025)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v14i3.20135

Abstract

Background: Aeng Tong-Tong Village in Sumenep Regency is widely recognized as a center for traditional kris craftsmanship. It is the only area in Indonesia with the largest number of kris masters (Empu), with approximately 600 practitioners officially acknowledged by UNESCO. Despite this cultural richness, the village still lacks a well-developed visual identity and information system, particularly in aspects such as directional signage, visual branding, and overall appeal to tourists and visitors. This community engagement initiative aims to design, enhance, and implement a strong visual identity for the Empu Keris, serving both as a means of cultural preservation and promotional media. Method: Methodology: The activities were carried out through several stages, including workshops on preservation and conservation techniques, digital marketing and visual promotion training, and a cultural festival culminating in the official unveiling of totem signage. These efforts were specifically directed at Through a strategic and collaborative design process, the program successfully produced visual elements that function as distinctive markers, helping visitors easily identify the kris artisans and masters in Aeng Tong-Tong Village. Conclusion: The installation of kris-shaped totem signage in Aeng Tong-Tong serves as a meaningful step toward strengthening the village’s visual identity as a cultural tourism destination, while actively preserving and honoring the ancestral heritage of the Indonesian archipelago.
EVALUASI IMPLEMENTASI PERATURAN DAERAH NOMOR 11 TAHUN 2018 TENTANG PENATAAN PEDAGANG KAKI LIMA DI TAMAN TAJAMARA, SUMENEP Hari, Nirwana Haidar; Umam, Ahmad Khairul; Hujairi, Ahmad Walid; Sukaridhoto, Sritrusta; Bahtiar Arifianto, M. Mohamad Zaky; Firdausy, Davana Yudista; Abdul Aziz, Moch. Ilham
Jurnal Karaton Vol 5 No 1 (2025): Karaton: Jurnal Riset dan Inovasi Sumenep
Publisher : Badan Riset dan Inovasi Daerah Kabupaten Sumenep

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Abstract

Penelitian ini mengevaluasi implementasi Peraturan Daerah Kabupaten Sumenep Nomor 11 Tahun 2018 tentang Penataan dan Pemberdayaan Pedagang Kaki Lima (PKL) pada kawasan Taman Tajamara sebagai zona hijau PKL. Secara khusus, penelitian ini berupaya menjawab tiga pertanyaan: (1) bagaimana pelaksanaan Perda tersebut di Taman Tajamara dengan dukungan sistem pemantauan berbasis Smart PKL (IoT–MQTT); (2) faktor apa saja yang mendukung implementasinya; dan (3) faktor apa saja yang menghambat implementasi di lapangan. Pendekatan yang digunakan adalah kualitatif studi kasus melalui wawancara mendalam, observasi lapangan, analisis dokumen, serta integrasi data digital dari sistem Smart PKL yang merekam kehadiran dan jam operasional PKL secara otomatis. Kerangka evaluasi William N. Dunn digunakan untuk menilai kinerja kebijakan, sementara model implementasi Van Meter dan Van Horn dimanfaatkan untuk memetakan faktor pendukung dan penghambat. Hasil penelitian menunjukkan bahwa pelaksanaan Perda No. 11 Tahun 2018 di Taman Tajamara telah memberikan arah penataan yang lebih tertib, terutama melalui pengaturan zonasi dan pengurangan kesemrawutan ruang publik. Namun, jawaban atas rumusan masalah pertama mengindikasikan bahwa efektivitas implementasi masih terbatas oleh inkonsistensi penegakan jam operasional, keterbatasan sumber daya pengawasan, dan belum terintegrasinya Smart PKL ke dalam SOP rutin pengawasan. Menjawab rumusan masalah kedua, faktor pendukung utama implementasi meliputi kejelasan norma zonasi dalam Perda, komitmen sebagian aparat lapangan, dan ketersediaan data faktual dari sistem Smart PKL. Adapun terkait rumusan masalah ketiga, faktor penghambat mencakup kapasitas kelembagaan dan koordinasi lintas-OPD yang belum optimal, resistensi sebagian PKL terhadap penertiban, serta belum adanya prosedur teknis penggunaan data Smart PKL sebagai dasar tindakan. Penelitian ini merekomendasikan penguatan koordinasi kelembagaan, integrasi Smart PKL sebagai sistem pendukung keputusan, dan penyusunan SOP operasional yang adaptif terhadap pola aktivitas faktual PKL di Taman Tajamara.
Strengthening local aquaculture management in a group of Vannamei shrimp farmers through an MQTT-based early warning system for water quality monitoring Nirwana Haidar Hari; Ahmad Khairul Umam; Ibnu Cipta Ramadhan; Taufiqurrahman; Bagus Edi Fathorrasi; Richa Latifatin Nisa'; Satria Utama Disawa; Ainur Taufikur Rahman Rahman; Moh. Khairil Anwar; Faiq Muntashir; Dorik Prayogik F.
PERDIKAN (Journal of Community Engagement) Vol. 8 No. 1 (2026): In Progress
Publisher : IAIN Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19105/pjce.v8i1.23261

Abstract

Vannamei shrimp farming is an important source of livelihood and local food production for coastal communities, yet its productivity is highly sensitive to rapid fluctuations in pond water quality. In many small-scale and group-based ponds, monitoring is still conducted manually and intermittently, leading to delayed corrective actions and avoidable production losses. This community engagement program aimed to strengthen local aquaculture management in the Jaring Emas Vannamei shrimp farmer group in Sumenep Regency, Indonesia, through the implementation of an Internet of Things (IoT)-based Early Warning System (EWS) for real-time water quality monitoring. The program was carried out using a participatory and practice-based approach that actively involved the partner group throughout the process, from problem identification and solution design to system installation, practical training, and ongoing assistance. The intervention introduced three ESP32-based IoT nodes equipped with pH, temperature, and dissolved oxygen (DO) sensors, supported by an MQTT communication server and integrated web and mobile applications that provided real-time dashboards, early warning alerts, and more systematic records for feeding and harvesting activities. The evaluation examined system operability, continuity of monitoring, and changes in partners’ operational practices. The findings showed that the system operated continuously and enabled real-time monitoring through both web and mobile access. The partners were increasingly able to interpret data trends, understand alerts, and use this information to take corrective actions, such as adjusting aeration when DO levels declined. Operational record-keeping also became more systematic, while harvest data indicated improved outcomes after system adoption: yields increased from approximately 830–880 kg per pond with grade B quality to approximately 1,190–1,220 kg per pond with grade A quality. Overall, the program strengthened not only technical monitoring capacity but also more preventive, responsive, and data-informed pond management practices at the community level. Future programs should strengthen post-deployment mentoring and develop simple recommendations based on historical data to support sustained adoption and broader impact.
Surrogate Assisted Multi Objective Optimization of a 2.4 GHz Yagi Antenna Using Gaussian Process Regression and MOPSO Joko Prasetyo; Ahmad Khairul Umam; Khoironi
Journal of Advanced Vocational Information and Communication Technology Vol. 1 No. 2 (2026)
Publisher : ISAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/javict.v1i2.1567

Abstract

This paper presents a surrogate‑assisted multi‑objective optimization approach for a 2.4 GHz Yagi–Uda antenna using Gaussian Process Regression (GPR) and Multi‑Objective Particle Swarm Optimization (MOPSO). The antenna performance is evaluated in terms of maximum gain and minimum Voltage Standing Wave Ratio (VSWR). Three key physical parameters—inter‑element spacing (gap), director length, and element diameter—are parametrically swept using CST Microwave Studio to generate training data. GPR models are employed as surrogate fitness estimators to approximate the nonlinear relationship between antenna geometry and performance metrics. These surrogate models are integrated into the MOPSO framework to efficiently explore the design space and obtain Pareto‑optimal solutions. The results demonstrate that the proposed method effectively identifying optimal pareto front trade‑offs between gain and VSWR, validating the effectiveness of the proposed approach.
Energy-Efficient Sector-Based Routing in 3D Wireless Sensor Networks Using Midpoint-Aware Cluster Head Selection Nirwana Haidar Hari; Ahmad Khairul Umam; Lusiana Agustien
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 10 No 1 (2026): February 2026
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v10i1.6875

Abstract

Energy efficiency is a key concern in three-dimensional Wireless Sensor Networks (3D WSNs), where irregular node distribution can shorten network lifetime. This study introduces a novel sector-based clustering protocol that partitions the sensing field azimuthally and selects Cluster Heads (CHs) based on residual energy and distance to each sector’s geometric midpoint. The core innovation lies in an adaptive threshold formula that incorporates both energy and spatial distance, enabling fairer CH rotation and better intra-cluster communication. This approach ensures more balanced energy depletion and improved load distribution. Simulations in a 3D environment showed that the proposed protocol outperformed LEACH-Classic, LEACH-GA, and LEACH-KMeans in FND, HND, LND, residual energy, and throughput. Notably, it improves FND by up to 59.2% compared to LEACH and increases throughput by 37.8%, confirming the benefits of azimuth-based clustering and midpoint-aware CH selection.
PERBANDINGAN TRANSFORMASI WAVELET DISKRIT DAN TRANSFORMASI WAVELET STASIONER UNTUK DENOISING CITRA Ahmad Khairul Umam; Irma Wulandari; Agung Teguh Setyadi; Hasnah Aulia Zahra; Khansa Nadhif Shafa
MATHunesa: Jurnal Ilmiah Matematika Vol. 13 No. 02 (2025)
Publisher : Universitas Negeri Surabaya

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Abstract

The wavelet transform is an improvement of the Fourier transform. Discrete Wavelet Transform (DWT) and Stationary Wavelet Transform (SWT) are part of the wavelet transform. DWT and SWT can be used to reduce noise in images. In this research, DWT and SWT methods are compared for image denoising process. The PSNR value and computation time for level 1 and 2 wavelets are compared. A grayscale test image of Lena and the cat measuring 512×512 pixels are used. We use Haar, Daubechies, biorthogonal, symlets, and coiflets wavelets. From this research results, the highest PSNR value is for the SWT method. As for the fastest computation time, it is all for DWT method.
Co-Authors Abdul Aziz, Moch. Ilham Agung Teguh Setyadi Agustien, Lusiana Ahmad Isro'il Ahmad Isro'il Ahmad Isroil Ahmad Walid Hujairi Ahmed David Anugerah Ainul Yaqin Ainur Taufikur Rahman Rahman Alfan, Aris Amanda Fatma Muamalah Anggita, Sharazita Dyah Anis Kurli, Anis Aris Alfan Bagus Edi Fathorrasi Bahtiar Arifianto, M. Mohamad Zaky Daniswara, Krisna Adilia Deny Fardiansyah Putra Dorik Prayogik F. Elisa Dwi Aprilia Faiq Muntashir Firdausy, Davana Yudista Hari, Nirwana Haidar Hasnah Aulia Zahra I Wayan Rangga Pinastawa Ibnu Cipta Ramadhan Ibram Maulana Akhsanul Qasasi Imro’atun Najiyah Indah Saniatur Rohma Irma Wulandari Joko Prasetyo Joko Prasetyo Joko Prasetyo Khansa Nadhif Shafa Khoironi Khoironi Khoironi Khoironi Khoironi Khoironi, Khoironi Krisna Adilia Daniswara Krisna Adilia Daniswara Lusiana Agustien Moh. Khairil Anwar Muamalah, Husnul Much Chafid Musthofa Galih Pradana Nihaya Alivia C. Dewi Nirwana Haidar Hari Pukky Tetralian B. N. Pukky Tetralian Bantining Ngastiti Pukky Tetralian Bantining Ngastiti Richa Latifatin Nisa' Satria Utama Disawa Supriyanto Taufiqurrahman Zaqiyatus Shahadah Zaqiyatus Shahadah