Articles
<![CDATA[Optimasi Hasil Produksi Tahu dan Tempe dengan Metode Branch and Bound dan Metode Cutting Plane ]]>
<![CDATA[Raudhatul Jannah A.M]]>;
<![CDATA[Arnellis Arnellis]]>;
<![CDATA[Riry Sriningsih]]>
<![CDATA[ Journal of Mathematics UNP Vol 3, No 1 (2018): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v3i1.4665
<![CDATA[Abstract –The optimal profit isthe main goal in every business.The purpose of this study is to determine how the problem of optimization of production output to be solved and to know the result of optimal production from Tofu Yanto Factory based on the availability of materials, capital of production, times and worker. Factory need to plan a strategy so that all available resources can be used appropriately to obtain optimal production results. A linear programming is a decision making technique for solving the problem of limited resource allocation to achieve an optimum goal. Some ways that can be done to complete the integer programming is by using the branch and bound method and the cutting plane method. Both of these methods are methods for solving integer linear programming problems that will result in integer decision variables. Based on the result of the research, it is found that the branch and bound method is more effectively than the cutting plane method for the optimization of tofu and tempe products at Tofu Yanto Factory.]]>
<![CDATA[Penyelesaian Sistem Persamaan Linear Fuzzy Menggunakan Metode Dekomposisi Crout ]]>
<![CDATA[Aulia Rindu Permata]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 3, No 2 (2018): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v3i2.4674
<![CDATA[ Abstract Variables and constants from the system of linear equations commonly studied are real numbers because the problems that are resolved are clear. In fact, not all problems are clear, but still in a vague state, so to overcome them, a fuzzy linear equation system is needed. Fuzzy linear equation systems have variables and constants in the form of fuzzy numbers while the coefficients are real numbers. This study uses Crout's decomposition method in solving fuzzy linear equation systems. Crout Decomposition Method is a method that factifies the coefficient coefficient A of the system equation Ax = y to be a matrix multiplication LU where L is a matrix of the lower triangle and U is a triangular matrix on which the main diagonal is one. The results of this study found that Crout's decomposition method can be used in solving fuzzy linear equation systems.]]>
<![CDATA[Teacher Competence Improvement Training in Writing Best Practice Using The Special Projects Assignments Method For ‘MGMP’ SMA Pesisir Selatan ]]>
<![CDATA[Yetty Zainil]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Pelita Eksakta Vol 5 No 2 (2022): Pelita Eksakta Vol. 5 No. 2 ]]>
Publisher : <![CDATA[Fakultas MIPA Universitas Negeri Padang ]]>
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DOI: 10.24036/pelitaeksakta/vol5-iss2/185
<![CDATA[This paper aims to report the result of the training to increase teacher competence in writing Best Practices with the Special Projects Assignments Method and developing competent teachers who can write articles and their impact on sustainable competency development. The methods used in the service of participatory methods are offline and online. This training phase begins offline by administering questionnaires, and designing problems, then followed by providing Best Practices writing technique skills offline; discussion at the end of the training carried out online. The training results show that the competence of senior high school teachers in Pesisir Selatan has increased in writing best practice reports, with only one person (5%) still needing to submit didn’t draft required. This increase was also supported by the success of two training participants from SMAN 3 Painan, namely Zulmariko, in the 3rd place, and Darma Yunita, who was selected as the finalist in the best practice contest in the Province of West Sumatra on November 2022.]]>
<![CDATA[Matriks Leslie dan Aplikasinya pada Pemodelan Jumlah Populasi Perempuan di Sumatera Barat ]]>
<![CDATA[Mayang Sugara]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 6, No 4 (2021): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v6i4.12208
<![CDATA[The Leslie matrix is a demographic method for calculating the number and growth rate of a population. This method was applied to determine the female population in West Sumatera. The growth of the female population in West Sumatera can affect the population because it has the nature to breed. Based on the Central Statistics Agency for West Sumatera in 2020, it was recorded the population of West Sumatera consisted of 5,534,472 people. This data has increased compared to 2010 amounting to 687,563 people. This study aims to prove the theorem of the characteristics of the Leslie matrix and application the number and rate of the female population in West Sumatera on next two years. This research is an applied research with secondary data obtained through the website of the Central Statistics Agency (BPS) and the West Sumatera Health Service. The research was conducted by proving the characteristics of the Leslie matrix and its use with a matrix size of "16×16" and determining the eigenvalues of matrix. Based on research, it was found that the eigenvalue obtained wan "<1" so the projection for the next two years decreased from the previous years.]]>
<![CDATA[Faktor-Faktor Yang Mempengaruhi Konsumen dalam Memilih Sepeda Motor dengan Menggunakan Analisis Faktor (Studi Kasus Mahasiswa Matematika FMIPA UNP) ]]>
<![CDATA[Resi Arsiva]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 7, No 1 (2022): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v7i1.10674
<![CDATA[The poor public transportation makes people choose motorbikes as the main transportation. The purpose of this research is to know what factors can influence the consumers in the course of choosing motorbike within study cases on department mathematic of UNP students.The questionnaire distributed used total sampling technic. There are four factors that influence consumers in the course of choosing motorbike. The first factor is current development, family members, lifestyle, satisfaction to product, learn from experience, consumer attitude to product, and experience. The second factor is parents profession, economic situation, and parents income. The third factor is friend and elder people existence. the fourth factor is bad and good viewpoint to product and parents experience.]]>
<![CDATA[ANALISIS MULTIDIMENSIONAL SCALING DAN PENERAPANNYA PADA PEMETAAN KAB/KOTA DI PROVINSI SUMATERA BARAT BERDASARKAN JUMLAH PENDUDUK USIA KERJA TERDAMPAK COVID-19 ]]>
<![CDATA[Dewi Safitri]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 6, No 3 (2021): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v6i3.11822
<![CDATA[The COVID-19 pandemic became an epidemic throughout the country at the end of 2019 until now. The impact is not only on the health sector but also on the employment sector in Indonesia, one of which is West Sumatra. The perceived impacts include unemployment, temporary absence from work and a reducing working hours. This impact makes the economy of the community decline. The purpose of this research is to see how the districts/cities in the province of West Sumatra are mapped/grouped based on the number of working age residents affected by COVID-19 using multidimensional scaling analysis. So later it can be used as a reference for the government in the future. From the results of the mapping, three groups were formed. The largest number of working age residents affected by COVID-19 was Padang City, followed by Agam districts. With a stress value of 0.25% and R2 of 0,999 it shows that the multidimensional scaling analysis map obtained is acceptable.]]>
<![CDATA[Preferensi Mahasiswa UNP Terhadap Tempat Kos di kec. Padang Utara pada Masa Pandemi (Covid-19) dengan Menggunakan Analisis Konjoin ]]>
<![CDATA[Lidia Bartasari]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 8, No 1 (2023): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v8i1.12730
<![CDATA[Boarding house is primary needs for collage students who migrate. Each student has a different of preference in determining a place to stay or boarding house. This study aims to determine the combination of attribute levels from the level of preference of Padang State University students in choosing boarding houses in North Padang District. The attributes used in this study are the distance to the boarding house, the rental price, and the boarding facilities The data analysis technique used is conjoint analysis. The results showed that the combination of attribute levels that students preferred most in choosing a boarding house was a boarding distance of km, the price range of boarding from IDR to IDR and facilities of boarding prioritizing is Wi-Fi. Meanwhile, the combination of attribute levels that students dislike choosing a boarding house are boarding distances km, the prices of boarding IDR, and no facilities. The most important attribute for Padang State University students in choosing a boarding house is the boarding facility attribute because it has the highest relative importance value of 39.4%.]]>
<![CDATA[Model Matematika SEIRS Penyebaran Penyakit Pneumonia pada Balita dengan Pengaruh Vaksinasi ]]>
<![CDATA[Aly Muhammad Zhafran]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 7, No 3 (2022): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v7i3.12577
<![CDATA[This study aims to establish a mathematical model of the distribution of pneumonia in children under five using the SEIRS (Susceptible-Exposed-Infected-Recovered-Susceptible) model, model analysis, and comparison of minimal vaccinations. This model consists of several classes, namely susceptible, infected but not yet infectious, infected, and cured. Analysis of the stability of the model is obtained by finding a disease-free fixed point whose analysis results are asymptotically stable and an endemic fixed point whose analysis results are asymptotically stable if the value of A>(Cαβmσ-Cαβσ)/(BCm-Bmρ) and A>βγρ/BC .]]>
<![CDATA[Analisis Bahasa Pemrograman Java dengan Bahasa Pemrograman Visual Basic Program Aplikasi Perkalian Matriks ]]>
<![CDATA[Fajar Shodik]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 6, No 3 (2021): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v6i3.12419
<![CDATA[The rapid development of Information Technology today brings ease of work in variousfields, such as mathematics. Complex calculations can be completed easily and quickly just by using acalculator. Calculations can also be done using an application program, where the application isdeveloped using a programming language. Of the many programming languages that exist today,including Java and VisualBasic. This research is a basic research where in this study an analysis of the programming language with matrix multiplication problems is carried out.The purpose oft his research is to see which programming language is better based on predetermined criteria. The research methodused is by analyzing the algorithms of the two programming languages with matrix multiplicationproblems based on relevant sources. The results showed that the Visual Basic is better than the Java based on these criteria.]]>
<![CDATA[Metode Zero Suffix Dalam Meminimumkan Biaya Pengiriman Barang (Studi Kasus PT. Aspac Cargo) ]]>
<![CDATA[Ega Rizka Wahyuni]]>;
<![CDATA[Arnellis Arnellis]]>
<![CDATA[ Journal of Mathematics UNP Vol 6, No 3 (2021): Journal Of Mathematics UNP ]]>
Publisher : <![CDATA[UNIVERSITAS NEGERI PADANG ]]>
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DOI: 10.24036/unpjomath.v6i3.11826
<![CDATA[Logistics business activities, expedition services and couriers are sectors that experienced a growth spurt and even showed an increase in transaction value. PT. Asia Pacific Dirgantara (Aspac Cargo) is an expedition service company that requires a mechanism in the distribution of goods. In the distribution of goods, planning to determine shipping costs is very influential. Good planning makes PT. Aspac Cargo is superior to other shipping companies so that it can get maximum profit. The purpose of this study was to determine the minimum cost of shipping goods at PT. Aspac Cargo using the Zero Suffix method and the minimum cost percentage obtained by PT. Aspac Cargo in minimizing the cost of shipping goods using the Zero Suffix method. This research is applied research and the data used are data on delivery of goods, data on demand for delivery of goods and data on the cost of shipping goods from the city of origin to the city of destination. The final result of the application of the Zero Suffix method to minimize the cost of shipping goods at PT. Aspac Cargo is Rp. 322,322,000 and the percentage of the minimum cost obtained by PT. Aspac Cargo in minimizing the cost of shipping goods using the Zero Suffix method, which is 16.9%]]>
