Nurwan Nurwan

• State University of Gorontalo

This study focuses on enhancing the competency of primary school teachers in integrating numeracy into learning activities across subjects. Numeracy literacy is a vital 21st-century skill essential for personal and professional decision-making. The training, conducted as part of a community service program, aimed to provide teachers with practical...

The Composite Stock Price Index (IHSG) is a of the key indicator a country uses to assess its economic condition. The fluctuating movements of stock prices create uncertainly in the stock market, complicating decision-making for investors and government entities. Therefore, there is a need for a method that can forecast the Composite Stock Price In...

This study models daily wind speed transitions in the Bone Bolango Regency using the Markov Chain Monte Carlo (MCMC) method and the Metropolis-Hastings algorithm, employing the Beaufort scale for wind speed classification. The research aims to predict the steady-state distribution of wind speeds and evaluate their temporal stability. Daily wind spe...

The COVID-19 pandemic has had an impact on the learning process in schools. For this reason, researchers observed learning at SMA Negeri 1 Gorontalo, it was found that students were still not optimal in solving mathematical problems, especially in formulating steps to solve problems. This research aims to improve students' problem-solving abilities...

The purpose of this study is to find out the opportunities for switching to the use of online transportation applications and predict the future use of online transportation applications by Gorontalo State University students using the Markov chain. The data used in this study are primary data obtained through questionnaires. The results of the pre...

Emas menjadi salah satu aset keuangan bagi negara dan menjadi komponen cadangan moneter global untuk perdagangan dan perlindungan ketika menghadapi krisis keuangan secara tiba-tiba. Beberapa data ekonomi sering mengalami ketergantungan atau dependensi jangka panjang (long memory). Salah satu model yang mampu mengatasi masalah tersebut adalah model...

In this paper, we consider the new version of tropical cryptography protocol, i.e the tropical version of El Gamal encryption. We follow the ideas and modify the clasical El Gamal encryption using tropical matrices and matrix power in tropical algebra. Then we also provide a toy example for the reader’s understanding.

Indonesians consume more tofu every week, proving that it is one of the country's most well-liked and potential food ingredients. Therefore, several people benefit from this positive potential as a business opportunity and improve the quality of their products as part of a market competition strategy. This study uses the Taguchi method and fuzzy lo...

In this article, the method use to determine the shortest path in the distribution of LPG is the Floyd-Warshall algorithm and the Bellman-Ford algorithm. These two methods will be compared to find out methods that can provide the best result. The best result is the path that has the minimum distance of distribution of LPG. Both of these algorithms...

Rainbow vertex-connection number is the minimum colors assignment to the vertices of the graph, such that each vertex is connected by a path whose edges have distinct colors and is denoted by . The rainbow vertex connection number can be applied to graphs resulting from operations. One of the methods to create a new graph is to perform operations b...

Employee scheduling is an activity plan for time sharing that contains a schedule for carrying out planned activities in the form of a table. This study aims to create an employee schedule model using a Genetic Algorithm, which is a heuristic method inspired by the process of natural selection, the strong will survive and reproduce, the stages of t...

This study concerned to apply the Cox proportional hazard regression model to the incidence of ties using two approaches, namely the Efron approach and the Breslow approach, and find out its application in cases of dengue hemorrhagic fever at Dr. Hasri Ainun Habibie Hospital, Gorontalo Regency. Dengue hemorrhagic fever data was taken from Dr. Hasri...

This study aims to increase students' understanding of concepts using interactive video learning media on statistical material. The type of research used is classroom action and is carried out at SMP Negeri 4 Limboto in the even semester of the 2021-2022 academic year. The subjects of this study were 28. The assessments used in the study were teach...

Istana Coklat Bakery, one of the bread industries in Gorontalo, produces two types of products, namely birthday cake and cake. Production planning in the istana Coklat Bakery begins with forecasting demand using double moving average method to production cost data, and production costs as variables that will be counted in the Bowman Transportation...

Sharia-based investment is an investment by the community to obtain profits in accordance with Islamic principles and law. This study aims to calculate the optimal portfolio return value using the Single Index Model, calculate risk with VaR (Value at Risk), and then implement it with Matlab’s GUI (Graphical User Interface). The data used is closing...

Stunting is a significant threat to the quality of human resources in Indonesia because stunting does not only involve physical growth disorders but can also cause children to be vulnerable to disease and experience disorders of brain development and intelligence. Many factors cause stunting, not only malnutrition in pregnant women and toddlers. Gr...

Proyek merupakan suatu usaha/aktivitas yang kompleks, tidak rutin, dibatasi oleh waktu, anggaran, resources, dan spesifikasi performansi yang dirancang untuk memenuhi kebutuhan konsumen. Suatu proyek yang besar tentu saja memerlukan waktu dan biaya yang tepat untuk memperoleh durasi pembangunan serta biaya yang dikeluarkan lebih optimal. Optimalisa...

An Octa-Chain graph (OCm) is a graph formed by modifying the cycle graph C8 by adding an edge connecting the midpoints in C8. The minimum number of colors used to color the vertices in a graph so that every two vertices have a rainbow path is called the rainbow vertex-connected number denoted by rvc (G). While the minimum number of colors used to c...

The Covid-19 pandemic has speared almost all country in the world, including Indonesia. The impact of the Covid-19 pandemic in various aspects of life, including economic problems. Some small and medium industries suffered a lot, but not a few are taking advantage of these situations to gain profits through creativity and digital innovation. In res...

Pemetaan kontraksi Reich siklik pada ruang kuasi αB-metrik akan diperkenalkan dalam tulisan ini. Akan ditunjukkan bahwa setiap pemetaan kontraksi Reich siklik memiliki titik tetap yang tunggal. Selain itu, diberikan pula contoh fungsi yang memenuhi kontraksi Reich siklik.

This article discusses student’s mathematics learning difficulties with the aim of describing student’s mathematics learning difficulties on the subject of power numbers. The method used in this research is descriptive which is carried out in class IX odd semester for the academic year 2021/2022. The subjects of this study were 20 students of class...

Pada penelitian ini didefinisikan graf baru yang dinamakan graf ferris wheel yang dinotasikan dengan Fw_n. Graf ferris wheel dengan 2n+1 titik dan 5n sisi dihasilkan dengan menggabungkan dua buah graf yaitu graf lingkaran dan graf roda dengan menambahkan sisi sebanyak 2n. Tujuan dari penelitian ini adalah menentukan bilangan terhubung pelangi pada...

Artikel ini membahas varian metode Secant Halley bebas turunan kedua yang di modifikasi dari kombinasi metode Secant dan modifikasi prediktor-korektor Halley. Metode baru yang dihasilkan adalah metode Secant-Halley dan metode Secant-Halley-Newton dengan orde kekonvergenan kedua metode tersebut adalah konvergen empat dan enam. Metode Secant-Halley m...

Queues are often found in public service providers, including port services. Therefore, the InaPortNet scheme was developed to facilitate and minimize queues in and out of ships. Also, service performance was optimized through behavior analysis and queuing system stability. This study focused on designing the max-plus algebra model and time estimat...

This article discusses the description of students' mathematical connection abilities in solving mathematics on the Pythagorean theorem material. This descriptive research was conducted at SMP Negeri 1 Bolaang Uki in the odd semester of the 2019/2020 school year. The technique of data collection is done by test. Description test to obtain mathemati...

This research deals with the application of the Floyd-Warshall algorithm and Floyd-Warshall plus in the optimization of electricity distribution network routes in Gorontalo City. The route optimization begins by representing the power poles and cable lengths into a graph. The graph used is a weighted graph where the road (related to the length of t...

The economic model which deals with the economic cycle is Goodwin's Model. It presents the relationship between the employment rate and wage shares. In this study, the modification model was made, taking into three types of workers, namely high, medium, and low-skilled workers. Studies of the model are conducted by determining the equilibrium point...

Timetabling is one of the problems faced by large numbers of institutions, including schools. In this paper, this timetabling problem is mathematically modeled using Integer Nonlinear Programming to optimize the result with the non-linear objective function or constraint function. The model was implemented to solve the timetabling problem in one of...

Kerajinan Karawo merupakan salah satu kerajinan khas Gorontalo. Proses pembuatannya membutuhkan waktu yang sangat lama, mulai dari penyediaan bahan baku dan alat, pembuatan atau persiapan motif, pemotongan, pengaturan motif, mencabut benang, menyulam, merawang/ penenunan dan penyelesaian akhir. Dalam penelitian ini, metode aljabar max-plus digunaka...

This study discusses the regression modeling with spatial dependence to determine the factors affecting the labor force participation rate in Indonesia 2020. The spatial regression models used in this study are spatial Autoregressive Model (SAR) and Spatial Error Model (SEM), The finding concludes that the SAR model is better used in spatial modeli...

Penelitian ini bertujuan untuk mengetahui biaya minimum pendistribusian tabung LPG 3kg dengan metode North west Corner dengan uji optimal Stepping Stone. Penelitian ini dilakukan di dua Agen yaitu PT. Toyungo dan PT.Hasanah Inti Bumi Abadi . Adapun kegunaan dari penelitian ini untuk meningkatkan dan memperbaiki sistem distribusi perusahaan. Metode...

Nurse scheduling is one of the problems that often arise in hospital management systems. Head of ICU room and nurse to cooperate in making good nurse scheduling for the creation of optimal service. In this paper, we study a hospital nurse schedule design by considering the level of nurse education and the provision of holidays. Nurses with undergra...

This research is a descriptive study that aims to describe students' critical thinking abilities carried out by online learning. This research was conducted in class VIII SMP Negeri Widyakrama involving 23 students as research subjects. Data collection was obtained from validated essay test instruments. The test instrument was used to collect data...

This research deals with applying the Dijkstra algorithm and Welch-Powell algorithm to on-campus bus transportation problems. This research aims to determine the optimal solution of campus bus transportation routes in the shortest routes and schedules. In determining the fastest way, each intersection represented as a node, and the path described a...

This study discusses the spread of measles in a mathematical model. Mathematical modeling is not only limited to the world of mathematics but can also be applied in the health sector. Measles is a disease with a high transmission rate. The spread of measles in this model was modified by adding the treated population and the treatment parameters of...

In this article, we analyze the dynamics of measles transmission model with vaccination via an SVEIR epidemic model. The total population is divided into five compartments, namely the Susceptible, Vaccinated, Exposed, Infected, and Recovered populations. Firstly, we determine the equilibrium points and their local asymptotically stability propertie...

Penelitian ini membahas tentang model diskrit eko-epidemiologi. Model eko-epidemiologi adalah gabungan dari ilmu ekologi dan epidemiologi yang membahas tentang interaksi antara predator, prey rentan, dan prey terinfeksi menggunakan fungsi respon Holling tipe I dan pertumbuhan prey rentan mengunakan fungsi logistik untuk membatasi pertumbuhan yang b...

This paper discusses the mathematical model of drug users with education. Optimal control theory was used on this model with education as a control to achieve the goal of minimizing the number of drug users. The optimal control problem was analyzed using Pontryagin's minimum principle and performed numerical simulation by using a 4th-order Runge-Ku...

Lectures scheduling is a difficult administrative task for universities. This happens because in lectures scheduling must combine the number of courses, approve the room, day and period, as well as teaching lecturers. The purpose of this article is to create an optimization model for courses scheduling using integer linear programming to minimize t...

Penjadwalan perkuliahan merupakan tugas administrasi yang sangat berat terutama bagi perguruan tinggi. Hal ini terjadi karena dalam penjadwalan perkuliahan harus mengkombinasikan antara banyaknya mata kuliah, ketersediaan ruangan, hari dan periode waktu, serta dosen pengajar. Tujuan dari artikel ini adalah membuat model optimasi penjadwalan mata ku...

Dinamika model Leslie-Gower dengan fungsi respon ratio-dependent yang didiskretisasi menggunakan skema Euler maju adalah fokus utama pada artikel ini. Analisis diawali dengan mengidentifikasi eksistensi dari titik ekuilibrium dan kestabilan lokalnya. Diperoleh empat titik ekuilibrium yaitu titik kepunahan kedua populasi dan titik kepunahan predator...

Rokok adalah salah satu zat kimia yang berpengaruh buruk bagi kesehatan danlingkungan, mengakibatkan penyakit jantung, hipertensi, kanker dan berbagaipenyakit lainnya. Dalam artikel ini dibahas tentang model matematika tipe SEIRSpada penyebaran populasi perokok. Model ini melibatkan empat sub populasi saling berinteraksi yaitu Susceptible (S) indiv...

Abstrak Artikel ini membahasa tentang model penyebaran pengguna narkoba dengan faktor edukasi. Analisis diawali dengan melakukan kontruksi model. Selanjutnya, ditentukan titik kesetimbangan dan kondisi kestabilannya, dan pada bagian akhir diberikan simulasi numerik. Dari hasil analisis diperoleh dua titik kesetimbangan, yaitu titik kesetimbangan be...

Rokok adalah salah satu zat kimia yang berpengaruh buruk bagi kesehatan dan lingkungan, mengakibatkan penyakit jantung, hipertensi, kanker dan berbagai penyakit lainnya. Dalam artikel ini dibahas tentang model matematika tipe SEIRS pada penyebaran populasi perokok. Model ini melibatkan empat sub populasi saling berinteraksi yaitu Susceptible (S) in...

Rokok adalah salah satu zat kimia yang berpengaruh buruk bagi kesehatan danlingkungan, mengakibatkan penyakit jantung, hipertensi, kanker dan berbagaipenyakit lainnya. Dalam artikel ini dibahas tentang model matematika tipe SEIRSpada penyebaran populasi perokok. Model ini melibatkan empat sub populasi saling berinteraksi yaitu Susceptible (S) indiv...

Abstrak Dalam artikel ini dipelajari model matematika pada populasi penyebaran perokok. Model ini melibatkan empat sub populasi saling berinteraksi yaitu Susceptible (S) individu sehat tapi rentan menjadi perokok, Exposed (E) individu perokok pem-ula, Infected (I) individu perokok aktif, dan Recovered (R) individu yang berhenti menjadi perokok. Mod...

Forecasting the number of passengers can be a consideration for managers of Gorontalo Crossing Port regarding the provision of tickets. The number of passengers can be influenced by certain seasonal or special events. To see the special events that affect the number of passengers arriving at Gorontalo Crossing Port, the forecasting method used is t...

Penelitian ini membandingkan Model ARCH(1) dan GARCH(1,1) pada peramalan Harga saham PT. Cowell Development. Penelitian ini bertujuan menemukan model yang terbaik diantara model ARCH(1) dan model GARCH (1,1) dalam meramalkan harga saham pada PT. Cowell Development Tbk Hasil penelitian diperoleh bahwa model ARCH(1) adalah model yang tepat untuk dija...

Dalam artikel ini dibahas model matematika penyebaran malaria tipe SEIRS – SEI. Modifikasi model dilakukan dengan pemberian perlakuan pada manusia, berupa treatment vaksinasi dan pengobatan. Dalam model ini, populasi manusia dibagi menjadi empat kelas, yaitu rentan, terpapar, terinfeksi, dan pulih. Adapun populasi nyamuk dibagi menjadi tiga kelas,...

Dalam artikel ini dibahas model matematika penyebaran malaria tipe SEIRS – SEI . Modifikasi model dilakukan dengan pemberian perlakuan pada manusia, berupa treatment vaksinasi dan pengobatan. Dalam model ini, populasi manusia dibagi menjadi empat kelas, yaitu rentan, terpapar, terinfeksi, dan pulih. Adapun populasi nyamuk dibagi menjadi tiga kelas,...