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All Journal IKRA-ITH EKONOMIKA Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Manajemen Bisnis Kewirausahaan Gemilang: Jurnal Manajemen dan Akuntansi Jurnal Ekonomi, Manajemen Pariwisata dan Perhotelan
Sabda Dian Nurani Siahaan
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Religion Arts Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Social Sciences

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Improvement of Teaching Materials of Microeconomic Theory (Case Study of Economic Education Study Program in State University of Medan) Putri Sari MJ Silaban; Joko Suharianto; Aurora Elise Putriku; Sabda Dian Nurani Siahaan
Budapest International Research and Critics Institute (BIRCI-Journal): Humanities and Social Sciences Vol 4, No 3 (2021): Budapest International Research and Critics Institute August
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v4i3.2269

Abstract

This study aims to produce microeconomic theory teaching materials. This study uses a research and development (R&D) method based on the Bord and Gall concept. The population of this study was all students of microeconomic theory subjects in the economic education study program in 2020. The sample was determined by purposive random sampling and the sample class was used for application and limited testing of a small sample, namely class C of Economic Education. Based on the results of the study, the microeconomic theory teaching materials made and validated by 3 expert validators resulted in a decision that teaching materials had a very high level of feasibility (81.25%) with a note that revisions needed to be made. After all revision notes have been corrected, a small group trial was conducted on 20 class C students of economic education in the microeconomic theory course. Based on the results of small group trials, it is known that there has been a significant increase in learning outcomes before and after using Microeconomic Theory teaching materials. The result is that all factors of convenience for users, usability, and time effectiveness have a percentage value of 81.85%, meaning that it is concluded that the book developed has met the criteria for readability and practicality. This research was conducted only up to the 7th stage, namely producing a revised draft of the teaching material product. The result is that all factors of convenience for users, usability, and time effectiveness have a percentage value of 81.85%, meaning that it is concluded that the book developed has met the criteria for readability and practicality. This research was conducted only up to the 7th stage, namely producing a revised draft of the teaching material product. The result is that all factors of convenience for users, usability, and time effectiveness have a percentage value of 81.85%, meaning that it is concluded that the book developed has met the criteria for readability and practicality. This research was conducted only up to the 7th stage, namely producing a revised draft of the teaching material product. 
Analisis Pengaruh Brand Image dan Desain Produk terhadap Minat Membeli Konsumen pada Toko Sepatu Bata Pancing MMTC Kota Medan Ronaldo Pardede; Sabda Dian Nurani Siahaan
GEMILANG: Jurnal Manajemen dan Akuntansi Vol. 5 No. 2 (2025): : Jurnal Manajemen dan Akuntansi
Publisher : BADAN PENERBIT STIEPARI PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56910/gemilang.v5i2.2541

Abstract

This study aims to analyze the influence of Brand Image and Product Design on Consumer Purchase Interest at Bata Pancing Shoes Store MMTC Medan City. The method used is a quantitative approach with probability sampling technique, with the research population being shop visitors located at Jl. Williem Iskandar, Sidorejo, Percut Sei Tuan District, Deli Serdang Regency, North Sumatra. The data were analyzed using SPSS software version 26. The results showed that Brand Image (X1) had a positive and significant effect on Consumer Purchase Interest (Y) with a coefficient of 0.645 and a significance value of 0.000. Meanwhile, Product Design (X2) also had a positive and significant effect with a coefficient of 0.171 and a significance value of 0.007. Simultaneously, both variables contributed 73.8% to Consumer Purchase Interest, while 26.2% was influenced by other factors outside this study. Thus, Bata Pancing Shoes Store is advised to strengthen Brand Image and develop Product Design to increase Consumer Purchase Interest.
Analisis Pengaruh Voucher Diskon dan Kemudahan Penggunaan Aplikasi terhadap Keputusan Pembelian Melalui Aplikasi Grabfood: Studi pada Mahasiswa Jurusan Manajemen FE Unimed Ricky Louis Naibaho; Sabda Dian Nurani Siahaan
Jurnal Ekonomi, Manajemen Pariwisata dan Perhotelan Vol. 4 No. 3 (2025): Jurnal Ekonomi, Manajemen Pariwisata Dan Perhotelan
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jempper.v4i3.5042

Abstract

This study aims to analyze the extent of the influence of the provision of discount vouchers and the ease of use of the application on purchase decisions through the GrabFood service among students of the Management Study Program, Faculty of Economics, State University of Medan. In today's digital era, app-based food delivery services are increasingly in demand due to the ease of access, convenience, and various promotions offered. GrabFood as one of the leading online food service providers in Indonesia utilizes marketing strategies in the form of providing discount vouchers and improving user experience to attract consumer interest. The approach used in this study is a quantitative approach with purposive sampling techniques to determine samples that are relevant to the research objectives. The population in this study is GrabFood application users, with a total of 100 students. Data were collected through questionnaires and processed using SPSS software version 26 to analyze the relationship between independent and bound variables. The results of the analysis show that the discount voucher variable has a positive and significant impact on purchase decisions. Students tend to take advantage of discounts as the main consideration before ordering food. The same applies to the variable of ease of use of the application which also has a positive and significant effect. The user-friendly interface features of the GrabFood application, transaction speed, and practical payment system are important factors in attracting buyers. In addition, simultaneously these two variables have been proven to influence purchasing decisions positively and significantly. This research is expected to provide input for GrabFood management to continue to optimize promotions and application features to further increase consumer satisfaction and loyalty among students.
Analisis Pengaruh Product Quality dan Service Quality Terhadap Loyalitas Konsumen Pada Warkop Rifqi Jaya Tuasan Medan Tembung Rahmadi Idris Pasaribu; Sabda Dian Nurani Siahaan
JUMBIWIRA : Jurnal Manajemen Bisnis Kewirausahaan Vol. 4 No. 2 (2025): Agustus : Jurnal Manajemen Bisnis Kewirausahaan
Publisher : BADAN PENERBIT STIEPARI PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56910/jumbiwira.v4i2.2886

Abstract

This study aims to analyze the influence of Product Quality and Service Quality on Consumer Loyalty at Warkop Rifqi Jaya Tuasan, Medan Tembung. The method used is quantitative research with a purposive sampling technique. The population in this study consists of Warkop Rifqi Jaya Tuasan consumers who have visited more than four times in one month. Data processing was carried out with the help of SPSS software version 26. The results of the study indicate that Product Quality has a positive and significant influence on Consumer Loyalty, as well as Service Quality which also has a positive and significant influence on Consumer Loyalty. Simultaneously, both variables Product Quality and Service Quality have a positive and significant influence on Consumer Loyalty.
STRATEGI KONTEN MARKETING MELALUI MEDIA DIGITAL DALAM MENINGKATKAN PENJUALAN PADA COFFESHOP ROXY COFFEE DI RANTAU PRAPAT KABUPATEN LABUHAN BATU Cahaya Suri Lubis; Sabda Dian Nurani Siahaan
IKRAITH-EKONOMIKA Vol. 8 No. 3 (2025): IKRAITH-EKONOMIKA Vol 8 No 3 November 2025
Publisher : Universitas Persada Indonesia YAI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37817/ikraith-ekonomika.v8i3.6165

Abstract

Penelitian ini bertujuan untuk menganalisis strategi Content Marketing melalui media digital Instagram dalam meningkatkan penjualan pada coffee shop Roxy Coffee di Rantau Prapat. Menggunakan pendekatan kualitatif dengan teknik pengumpulan data melalui wawancara, observasi, dan dokumentasi, penelitian ini mengkaji bagaimana implementasi konten digital memengaruhi keputusan pembelian konsumen. Hasil penelitian menunjukkan bahwa strategi yang diterapkan melalui empat tahapan utama perencanaan, produksi kreatif, distribusi, dan pemantauan terbukti sangat efektif dalam menjangkau audiens yang lebih luas. Penggunaan fitur Reels untuk konten visual estetis dan Stories untuk interaksi personal berhasil meningkatkan jangkauan (reach) hingga 9.639 serta keterlibatan (Engagement) audiens yang signifikan. Secara konkret, strategi ini mampu mengubah interaksi digital menjadi konversi penjualan nyata, di mana volume penjualan per cup meningkat dari 2.100 menjadi 3.200, melampaui target awal sebesar 2.700 cup. Penelitian ini menyimpulkan bahwa konsistensi konten yang relevan dan estetika visual yang kuat di media sosial merupakan kunci utama dalam memperkuat daya saing dan meningkatkan pendapatan bisnis di era digital.Kata Kunci: Content Marketing, Media Digital, Instagram, Penjualan, Coffee Shop
Co-Authors Aurora Elise Putriku Cahaya Suri Lubis Putri Sari MJ Silaban Rahmadi Idris Pasaribu Ricky Louis Naibaho Ronaldo Pardede Suharianto , Joko