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Khairul Alim
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Department of Mathematics Faculty of Science and Technology Universitas Jambi Kampus Pinang Masak Mendalo Jambi Indonesia
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Mathematical Sciences and Applications Journal
Published by Universitas Jambi
ISSN : -     EISSN : 29886481     DOI : https://doi.org/10.22437/msa.v4i2
Core Subject : Science, Education,
Decision Sciences, Operations Research & Management Mathematics
The scope of this journal including is Real Analysis Algebra Applied mathematics Computational Mathematics Applied Statistics Actuarial mathematics and others
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 24 Documents
 1   2   3 
Analisis Model Predator-Prey Tanaman Lada, Hama Penggerek Batang, dan Penghisap Buah M. Diwa Sandika Aditama; Dear Michiko Mutiara Noor; Nela Rizka
Mathematical Sciences and Applications Journal Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i2.28629

Abstract

Pepper (Piper nigrum L.) is one of the oldest and most popular spices in the world and one of the important plantation crops in Indonesia, especially in Lampung Province. In cultivating pepper plants, many farmers are faced with the problem of pest attacks so that the productivity of pepper plants decreases due to pest attacks. Pests that attack pepper plants in Lampung Province include stem borers and fruit suckers. This research was conducted to look at the predator-prey mathematical model between pepper plants and stem borer and fruit sucking pests and to see the effect of pesticide control on this phenomenon. Modeling was carried out using the Holling II function. The results of numerical simulations on the predator-prey model without control show that the model will be stable in conditions where there is a population of pepper plants, while the populations of stem borers and fruit suckers experience extinction. However, if the parameter values \[ \gamma \] > 0.001045 and \[ \delta \] > 0.008032, then the model will not be stable under these conditions. Furthermore, the simulation shows that the use the use of pesticide control can accelerate the reduction in pest growth.
Aplikasi Modifikasi Algoritma Vigenere Cipher dan Hill Cipher Menggunakan Konversi Suhu Aurillya Queency; Sisilia Sylviani
Mathematical Sciences and Applications Journal Vol. 4 No. 1 (2023): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i1.28858

Abstract

Cryptography is a method used to maintain the confidentiality of messages and data. Modifications or combinations of algorithms can be made to make the process of cracking secret messages more difficult than just one algorithm. This research aims to apply a combination of modified Vigenere Cipher algorithm, modified Hill Cipher algorithm, and temperature conversion equations to maintain a message’s confidentiality. By determining one plaintext and the required keys, the encryption and decryption process uses a modified Vigenere Cipher algorithm, a modified Hill Cipher algorithm, and all temperature conversion equations. The results obtained in the encryption process of one plaintext are 12 different ciphertexts according to the temperature conversion equation used. Moreover, the results obtained in the decryption process of 12 different ciphertexts are the original plaintext.
Implementasi Algoritma RSA (Rivest-Shamir-Adleman) pada Kriptografi Klasik Muhammad Zaky Zachary; Sisilia Sylviani; Edi Kurniadi
Mathematical Sciences and Applications Journal Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i2.28863

Abstract

The implementation of the RSA (Rivest-Shamir-Adleman) cryptography algorithm, which is one of the most commonly used public-key cryptography algorithms. RSA provides high security and is widely used in information security applications such as data encryption, digital signature generation, and key exchange. This research documents the step-by-step implementation process of the RSA algorithm in classical cryptography, including key generation, data encryption, and decryption, leading to the generation of encryption and decryption tables for a specific key.
Implementasi Matriks Skew-symmetric dalam Metode Kriptografi Affine-Hill Cipher Putri Nisa Pratiwi; Sisilia Sylviani
Mathematical Sciences and Applications Journal Vol. 4 No. 1 (2023): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i1.28864

Abstract

The concept of cryptography is widely used to reduce data security threats along with developments in information technology. Affine Cipher is an example of classic cryptography that utilizes modular operations and shifts on characters. On the other hand, Hill Cipher method is more dependent on matrix operations. The combination of the two methods, Affine-Hill Cipher, creates a more complex and superior method in terms of security. In this research, we utilize a square skew-symmetric matrix with an order corresponds to the secret key to construct the key matrix. The encryption and decryption processes are carried out using the Affine-Hill Cipher and adding the key exchange concept into the algorithm. The results indicate that this algorithm’s complexity can effectively reduce data security threats.
Pengamanan Nama Customer Shopee melalui Kombinasi Algoritma Hill Cipher Modifikasi dan Rail Fence Cipher Laily Wadil Muqadas; Sisilia Sylviani; Edi Kurniadi
Mathematical Sciences and Applications Journal Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i2.28865

Abstract

Science and technology development has made human activities turn into cyberspace activities, one of which is buying and selling. Shopee is one of the e-commerce platforms available. As an online-based platform, Shopee certainly stores lots of user data. Since August 1st, 2022, Shopee has made a policy regarding user data security by censoring the buyer’s name and phone number in the ordering process. This research discusses one way to secure buyer data through cryptography with the concept of super encryption. This concept itself combines more than one encryption method with the goal to create ciphertext that is difficult to solve. The chosen combination for this research is the modified Hill Cipher algorithm before proceeding with the Rail Fence Cipher encryption. Result obtained in this research is possible to be applied in Shopee buyer data security system, seen from the difficulty level of the ciphertext decryption.
Penerapan Metode Content-Based Filtering pada Sistem Rekomendasi Tegar Ridwansyah; Betty Subartini; Sisilia Sylviani
Mathematical Sciences and Applications Journal Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i2.32136

Abstract

Content-based filtering is one of the recommendation system methods that provides recommendations based on the similarity of attributes or items preferred by users. Several researchers in various fields have used content-based filtering in their research. This paper describes several studies in various fields using content-based filtering to solve the problems faced in their research. From these studies, the researchers revealed that the use of content-based filtering can produce simple and efficient recommendations and its application can increase the revenue of a business.
Penerapan Manpower Planning (MPP) dan Full Time Equivalent (FTE) pada Bagian Produksi PT. Lampung Sukses Bersama (Lampung Banana Foster) Tia Riski Rahmadhani; Eristia Arfi
Mathematical Sciences and Applications Journal Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v4i2.32291

Abstract

PT. Lampung Sukses Bersama, commonly known as Lampung Banana Foster, is a specialized retail establishment dedicated to promoting indigenous Nusantara products, particularly those hailing from the Lampung region. The core values of Lampung Banana Foster revolve around ensuring top-notch product quality, premium service, and a modern aesthetic. In line with its organizational strategy, it places significant emphasis on the importance of effective human resource management. Through empirical research, a noticeable misalignment between available human resources and actual production output has been uncovered. The research data, focuses on the production output of the production department from April to June 2020, coinciding with the emergence of the Covid-19 pandemic and its consequential impacts on business operations. Analysis of this dataset highlights a significant disparity between employee headcount and Full-Time Equivalent (FTE) value. Using the framework of Manpower Planning (MPP), the study reveals that shortages in employee numbers vary on a monthly basis. Consequently, we suggest that augmenting the workforce through new employee recruitment is necessary to ensure an equitable distribution of workload among all staff members. This finding underscores the importance of strategic human resource interventions to maintain operational efficiency and organizational resilience amidst changing circumstances.
Algoritma Arnoldi untuk Penyelesaian Masalah Nilai Eigen Matriks Raksasa Alim, Khairul; Pratiwi, Nurul; Multahadah , Cut; Sormin , Corry; Putra, Fernando Mersa
Mathematical Sciences and Applications Journal Vol. 4 No. 2 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

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

Abstract

The computation of eigenvalues for large-scale matrices is a crucial task in various scientific and engineering domains. This research focuses on the performance of numerical techniques, particularly those utilizing Hessenberg matrices, in solving eigenvalue problems. We investigate the efficacy of these methods and their implementation on modern computational platforms. Our study reveals that increasing the size of the Hessenberg matrix significantly enhances the accuracy of eigenvalue approximations. Through extensive simulations and performance evaluations, we demonstrate that larger Hessenberg matrices provide more precise eigenvalue solutions, underscoring the importance of matrix dimension in the computational process. These findings offer valuable insights for optimizing eigenvalue computations in large-scale applications.
Analisis Sistem Antrean pada Customer Service Representative (CSR) Plasa Telkom Cilacap menggunakan Model Multi Channel Single Phase Setiawati, Desti; Hartono, Bryan Pudji; Ahmad, Mizan
Mathematical Sciences and Applications Journal Vol. 5 No. 1 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v5i1.37490

Abstract

Plasa Telkom Cilacap is one of the branch offices of PT. Telekomunikasi Indonesia Tbk. (Telkom) engaged in information and communication technology (ICT) services and telecommunication networks in Indonesia. Plasa Telkom Cilacap plays a crucial role in fulfilling customer service needs. With the increasing number of customers who want to serve immediately, it is worrying that it will cause long queues, causing Customer Service Representative (CSR) services to customer needs to be not optimal. This study analyzed the queuing system at Plasa Telkom Cilacap using a queuing system analysis based on queuing performance and costs to know the optimal number of CSR needed at Plasa Telkom Cilacap. At the moment, Plasa Telkom Cilacap uses the Multi-Channel Single Phase queuing model with 3 CSRs. The data used in this study are the number of arrivals, length of service, and salary data. Based on the result, the optimal number of CSRs is 2 CSRs.
Efektivitas Aplikasi Wordwall pada Materi Statistika di SMKN 1 Jabon Solichuddin, Mohammad; Dhewy, Risdiana Chandra; Sukriyah, Dewi
Mathematical Sciences and Applications Journal Vol. 5 No. 1 (2024): Mathematical Sciences and Applications Journal
Publisher : Department of Mathematics, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/msa.v5i1.37538

Abstract

Along with the advancement of technology, digital-based learning media are increasingly used in the educational process. One of the learning media that can be utilized is the Wordwall application. This study aims to assess the effectiveness of using the Wordwall application in teaching Statistics at Vocational High School 1 Jabon. The Wordwall application was used as an interactive tool to motivate students and enhance their understanding of the subject matter. This research employed a descriptive quantitative method, involving 11th-grade students of the Creative Batik and Textile Crafts class 1 as the research sample. The instruments used included teacher ability observation sheets, student activity observation sheets, learning outcome tests, and student response questionnaires. The results showed that the teacher's ability to manage learning using Wordwall was categorized as very good, student activities were highly active, and student learning mastery reached 91%. Additionally, students' responses to the use of Wordwall were generally positive, with a percentage of  \(>=\)70%. Based on these findings, it can be concluded that the use of the Wordwall application is effective in improving students' understanding and motivation in learning Statistics.

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