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All Journal Journal of Mathematics UNP Jurnal Manuhara: Pusat Penelitian Ilmu Manajemen Dan Bisnis Jurnal Inovasi Ekonomi Syariah dan Akuntansi
Sari Fitri
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Mathematics

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Optimasi Rata-rata Produksi Jagung di Kabupaten Limapuluh Kota Menggunakan Pemrograman Kuadratik Metode Wolfe Sari Fitri; Helma Helma
Journal of Mathematics UNP Vol 8, No 2 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i2.14216

Abstract

This research was an experimented research that purpose to form a mathematical model for optimizing average corn production in Fifty Cities District with the constraint that the harvested area should not be more than the planted area and solve the model with the Wolfe quadratic programming method. The model of mathematical in the research was a model by formed nonlinear using the method of least squares. Then use the Wolfe method to form a new linear objective function and constraints in the form of Karush Kuhn-Tucker conditions. The results showed that the optimal average corn production in Fifty Cities District was 49.00456 tons/Ha with an optimal corn harvest area of 656.256 Ha.
Pengaruh Promo Gratis Ongkos Kirim Terhadap Minat Beli di Shopee : (Studi Kasus Pada Masyarakat Kelurahan Pasar Maga) Cahyani Aulia Fitri; Sari Fitri; Mufti Fahrizal
Jurnal Inovasi Ekonomi Syariah dan Akuntansi Vol. 1 No. 5 (2024): September: Jurnal Inovasi Ekonomi Syariah dan Akuntansi (JIESA)
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jiesa.v1i5.482

Abstract

This research aims to determine the effect of free shipping promotions on buying interest at Shopee (case study in the Pasar Maga sub-district community. Type of quantitative research, data collection techniques using observation and distributing questionnaires. The sample consisted of 60 respondents using the observation method and distributing questionnaires. Slovin Formula. Data analysis techniques use validity tests, reliability tests, normality tests, p-plot graphs, heteroscedasticity tests, scatterplot graphs, simple linear regression analysis tests and hypothesis tests using the SPSS version 25 program on buying interest at Shopee (Case Study in Pasar Maga Village Community), the tcount value for the Free Shipping Promo variable (X) is 5.604 with a ttable value of 1.671. So the tcount value is greater than ttable (5.604 > 1.671. This means that the free shipping promo has a positive effect on buying interest as proven by this research with The R Square value is 0.351 x 100% = 35.1%. while the remaining 64.9% is explained by other variables. Apart from that, the free shipping promo variable has a moderate relationship with shopee buying interest among the people of Pasar Maga Village, Mandailing Natal Regency, amounting to 0.593 which is in the correlation interval of 0.40 – 0.599 according to table 3.7.
Pengaruh Lokasi Usaha terhadap Keputusan Pembelian pada Usaha Cafe & Resto Tomyam 59 di Sipolu-Polu Kecamatan Panyabungan Kabupaten Mandailing Natal Mutiah Pulungan; Rizka Ar Rahmah; Sari Fitri
Jurnal Inovasi Ekonomi Syariah dan Akuntansi Vol. 1 No. 5 (2024): September: Jurnal Inovasi Ekonomi Syariah dan Akuntansi (JIESA)
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jiesa.v1i5.486

Abstract

The aim of this research is to determine the influence of business location on purchasing decisions at Tomyam 59 Cafe & Resto. To achieve this aim, research was conducted using samples from 99 Tomyam 59 consumers using the purposive sampling method. Data collection techniques using observation, documentation and questionnaires. Data analysis methods are validity, reliability, normality, heteroscedasticity, simple linear regression, hypothesis testing, namely the t test and R square test. All tests were carried out using the SPSS Version 21 program. The results of this research show that there is an influence of business location on purchasing decisions in Sipolu-polu, Panyabungan District, Mandailing Natal Regency. Indicated by a significant value of t 0.000 which is smaller than sig = 0.005 (0.000 < 0.05) the value of R = 0.676 and R Square = 0.457 means that the business location is able to explain the dependent variable or consumer buyer decision of 0.457 × 100% = 45.7 % while another 54.3% is explained by other variables. Based on the research results, it can be concluded that business location has a positive and significant effect on purchasing decisions with a value of tcount < ttable or tcount > ttable (9.030 < 1.664 or 9.030 > 1.664). And business location has a strong relationship with purchasing decisions of 0.680.
Pengaruh Kualitas Produk terhadap Kepuasan Konsumen pada UD. Alame Mandailing Rozi Nasution Kecamatan Panyabungan Kabupaten Mandailing Natal Harisa Umri Nst; Muhlisah Lubis; Sari Fitri
Jurnal Inovasi Ekonomi Syariah dan Akuntansi Vol. 1 No. 5 (2024): September: Jurnal Inovasi Ekonomi Syariah dan Akuntansi (JIESA)
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jiesa.v1i5.489

Abstract

This research was carried out at UD. Alame Mandailing Rozi Nasution in Kotasiantar, Panyabungan District, Mandailing Natal Regency with the aim of finding out the effect of product quality on consumer satisfaction at UD. Alame Mandailing Rozi Nasution. To achieve the objectives, research was conducted using a sample of 96 people. The research method uses quantitative by describing data using accidental sampling techniques. The research analysis is an analysis of validity and reliability tests, classical assumption tests, simple linear regression tests and hypothesis tests, namely the t test and R square test (with the help of the SPSS Version 21 program). The results of this research indicate that there is an influence of product quality on consumer satisfaction at UD. Alame Mandailing Rozi Nasution. Indicated by a significant value of t 0.000 which is smaller than sig = 0.005 (0.000 < 0.05) the value of R = 0.791 and R Square = 0.626 means that product quality is able to explain the dependent variable or consumer satisfaction of 0.626 × 100% = 62.6% while Another 35.4% is explained by other variables. Based on the research results, it can be concluded that product quality has a positive and significant effect on consumer satisfaction with a value of tcount > ttable (12.535 > 1.664). And product quality has a strong relationship with consumer satisfaction of 0.791.
Pengaruh Lokasi terhadap Keputusan Berkunjung Wisata Rania Hot Spring Kecamatan Ulu Barumun Kabupaten Padang Lawas Mahrani Azis; Sari Fitri; Muhlisah Lubis
Jurnal Manuhara : Pusat Penelitian Ilmu Manajemen dan Bisnis Vol. 2 No. 4 (2024): OKTOBER : Jurnal Manuhara : Pusat Penelitian Ilmu Manajemen dan Bisnis
Publisher : Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/manuhara.v2i4.1243

Abstract

The purpose of this study is to determine how much location influences visitors' decisions regarding whether or not to visit the Aek Milas Rania Hot Spring Baths tourist attraction. A quantitative method, accidental sampling testing is used to describe information in the research strategy. 92 individuals comprised the quantitative sample for this study, which was conducted with SPSS version 21. By utilizing the t test to dissect the information, the t count was 17.585 and the t table with an importance level of 5% was 1.665, which shows that the t count was more prominent than the t table. This demonstrates that location influences a person's decision to visit the Aek Milas Rania Hot Spring tourist attraction in the Ulu Barumun District of the Padang Lawas Regency.
Co-Authors Cahyani Aulia Fitri Harisa Umri Nst Helma Helma Mahrani Azis Mufti Fahrizal Muhlisah Lubis Mutiah Pulungan Rizka Ar Rahmah