Judul: Strategy to Increase Sales of Fruits and Vegetables through Digital Platform in Bogor City
Abstrak: The COVID-19 pandemic causes a decrease in people's income and an increase in the number of unemployed. Various business sectors experienced negative growth, but the agricultural sector experienced positive growth. This shows that the sale of agricultural products has the potential to increase people's income. The development of digital technology and the existence of a pandemic have increased e-commerce transactions carried out on digital platforms. The wide reach of the internet and the community's ability to use digital technology are the basis for people to transact online. Online transactions can also be carried out on digital platforms for fruit and vegetable commodities. The purpose of this study is to analyze the flow of transactions on digital platforms, analyze the factors that influence the total sales of fruits and vegetables on digital platforms in Bogor City, and formulate strategies to increase income through selling fruits and vegetables on digital platforms in Bogor City. The digital platforms analyzed are Tokopedia, Shopee, and Bukalapak. The method used in this research is observation, panel data regression, and SWOT analysis. Our research shows that the transaction flow on the digital platform involves suppliers, sellers, digital platforms, buyers, couriers, and payment channels. Suppliers are not directly involved in transactions on digital platforms unless the supplier doubles as a seller. The seller-buyer relationship is mediated by a digital platform that secures transactions to provide security and convenience for both sellers and buyers. Payment methods are mediated by payment channels which ensure the buyer pays for the order and the seller receives the payment. The results of panel data regression analysis show that the effect of price, review, rating, store type, and promotion are positive and negative based on the type of product. Factors that have a significant effect on total fruit and vegetable sales through digital platforms in Bogor City are the number of reviews and factors that do not have a significant effect are price and number of promotions. The rating factors and store type give results of varying significance by commodity. The results of the SWOT analysis show that a suitable strategy to be applied to increase income through fruit and vegetable sales in Bogor City is a cooperation from the seller and the producer as the first supplier. The seller is recommended to do cooperation with the dropshipper-pay-later method and accommodate all payment method available in online platform., Pandemi COVID-19 menyebabkan penurunan pendapatan masyarakat dan peningkatan jumlah pengangguran. Berbagai sektor usaha mengalami pertumbuhan negatif, tetapi sektor pertanian mengalami pertumbuhan positif. Hal ini menunjukkan bahwa penjualan produk pertanian berpotensi meningkatkan pendapatan masyarakat. Perkembangan teknologi digital dan adanya pandemi meningkatkan transaksi e-commerce yang dilakukan pada platform digital. Jangkauan internet yang luas dan kemampuan masyarakat dalam menggunakan teknologi digital menjadi dasar bagi masyarakat dalam bertransaksi secara digital. Transaksi secara digital juga dapat dilakukan pada platform digital untuk komoditas buah dan sayur. Tujuan dari penelitian ini adalah menganalisis alur transaksi pada platform digital, menganalisis faktor-faktor yang mempengaruhi total penjualan buah dan sayur pada platform digital di Kota Bogor, dan merumuskan strategi untuk meningkatkan penjualan buah dan sayur pada platform digital
Keyword: e-commerce, dragon fruit, potato, water spinach, farmer

Judul: Faktor-Faktor yang Mempengaruhi Niat Beli Ulang Sayuran Melalui Platform E-commerce di Jabodetabek
Abstrak: Pada masa pandemi covid-19 terjadi perubahan perilaku konsumen dari yang sebelumnya berbelanja offline menjadi online, termasuk untuk pembelian komoditas sayuran. Hal ini mengakibatkan e-commerce berkembang dengan pesat di tengah pandemi. Adanya peningkatan penjualan di e-commerce menciptakan peluang sekaligus tantangan bagi para pelaku usaha dalam rangka scale up bisnis. Tujuan penelitian ini adalah untuk mengetahui perilaku pembelian sayuran melalui e-commerce di Jabodetabek, menganalisis pengaruh faktor perceived ease of use terhadap perceived usefulness, menganalisis pengaruh faktor perceived ease of use, perceived usefulness dan trust terhadap attitude, menganalisis pengaruh faktor trust terhadap attitude, menganalisis pengaruh faktor attitude terhadap satisfaction, menganalisis pengaruh faktor perceived usefulness, trust, attitude dan satisfaction terhadap repurchase intention serta merumuskan implikasi manajerial yang dapat diterapkan oleh perusahaan dalam meningkatkan niat beli ulang konsumen. Teknik pengambilan contoh pada penelitian menggunakan non probability sampling dengan metode convenience sampling. Penelitian ini mengambil sampel sebanyak 153 responden dari Jabodetabek. Pengumpulan data dilakukan secara online melalui bantuan google form. Analisis data menggunakan SEM lisrel. Pengambilan data penelitian dilakukan sejak bulan Maret hingga April 2021. Responden dalam penelitian ini didominasi oleh generasi milenial, berjenis kelamin perempuan, dengan rentang usia 27 hingga 40 tahun. Pendapatan per bulan rata-rata sebesar > Rp 7.000.000 hingga Rp 14.000.000. Mayoritas responden bekerja sebagai karyawan swasta dan mengenyam pendidikan tinggi. Hasil penelitian menunjukkan bahwa perceived ease of use berpengaruh terhadap perceived usefulness, perceived ease of use tidak berpengaruh terhadap attitude, perceived usefulness dan trust berpengaruh terhadap attitude, perceived usefulness, trust, dan attitude tidak berpengaruh terhadap repurchase intention, attitude berpengaruh terhadap satisfaction, satisfaction berpengaruh terhadap repurchase intention. Implikasi manajerial yang dapat direkomendasikan untuk para pelaku usaha sayuran di e-commerce yaitu dengan cara membangun sistem yang dapat dipercaya, dinilai positif dan bermanfaat sehingga akan meningkatkan sikap positif dan kepuasan yang dirasakan oleh konsumen. Hal yang dapat dilakukan yaitu pengiriman tepat waktu, dapat memberi solusi atas setiap permasalahan yang dihadapi konsumen, adanya sistem same day delivery, menjaga konsistensi kualitas produk, penetapan harga yang lebih kompetitif, melibatkan komunitas dalam proses pemasaran serta meningkatkan conversation di sosial media melalui peran konsumen dalam hal review produk, pembuatan konten kreatif, termasuk dalam edukasi keunggulan berbelanja sayuran online dibandingkan offline.
Keyword: E-commerce Sayuran, Kepuasan Konsumen, Niat Beli Ulang, TAM, TRA

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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