Judul: Analisis Efektivitas Promosi Somethinc dengan Attention, Interest, Search, Action, Share (AISAS) Model
Abstrak: Pertumbuhan industri kosmetik lokal di Indonesia mengalami peningkatan sehingga persaingan dalam meningkatkan penjualan antar perusahaan kosmetik lokal semakin tinggi. Perusahaan membuat strategi untuk dapat bertahan pada pasar dengan menggunakan social media marketing. Penelitian ini bertujuan untuk menganalisis efektivitas promosi Somethinc dengan attention, interest, search, action, dan share (AISAS) model serta mengidentifikasi karakteristik konsumen Somethinc. Penelitian ini menggunakan 185 responden yang berdomisili di wilayah Jabodetabek. Teknik penentuan sampel menggunakan metode non-probability sampling jenis quota sampling. Metode analisis pada penelitian ini adalah analisis deskriptif dan Structural Equation Modelling Partial Least Square (SEM PLS). Hasil penelitian ini menyatakan bahwa variabel social media marketing berpengaruh signifikan terhadap attention, interest, dan keinginan seseorang untuk mencari tahu lebih banyak tentang informasi yang dipromosikan. Variabel attention, interest, search berpengaruh signifikan terhadap keputusan pembelian, serta aktivitas pembelian konsumen memengaruhi keinginan konsumen dalam membagikan pengalaman., The growth of the local cosmetic industry in Indonesia has increased, the competition between local cosmetic companies to increase sales is getting higher. The company has a strategy to survive in the market by using social media marketing. This study aims to analyze the effectiveness of Something product promotion using the attention, interest, search, action, and share (AISAS) model and identify the characteristics of consumers of Somethinc. This study used 185 respondents who live in Jabodetabek. The sampling technique was non-probability sampling method of quota sampling. The methods of analysis in this study were descriptive analysis and Structural Equation Modeling Partial Least Square (SEM-PLS). The results of this study state that social media marketing variables show a significant effect on attention, interest, and desire to discover more about the information being promoted. The attention, interest, and search variables show a significant effect on purchase decision, and consumer purchasing activities influence their desire to share their experiences.
Keyword: AISAS model, social media, SEM-PLS, social media marketing, Somethinc

Judul: The Effect of Brand Image, Product Quality, Price and Promotion towards Consumer Purchase Intention of Somethinc Products in Jabodetabek
Abstrak: Industri kecantikan merupakan salah satu sektor bisnis dengan peningkatan yang pesat setiap tahunnya, sehingga menyebabkan munculnya banyak pelaku usaha baru di bidang tersebut. Akibat kesadaran yang meningkat tentang pentingnya menjaga kesehatan kulit, produk perawatan kulit telah menjadi salah satu barang yang dimiliki setiap orang. Tujuan dari penelitian ini adalah untuk mengidentifikasi karakteristik responden dan mengetahui bagaimana citra merek, kualitas produk, harga, dan promosi berdampak pada minat beli konsumen Somethinc. Selain itu, penelitian ini juga akan menganalisis faktor-faktor yang paling berpengaruh pada minat beli konsumen Somethinc di Jabodetabek. Metode Analisis deskriptif dan SEM-PLS digunakan untuk menganalisis data. Teknik pengambilan sampel yang diterapkan adalah voluntary sampling. Hasil penelitian menggambarkan bahwa faktor harga dan promosi memiliki pengaruh positif dan signifikan terhadap minat beli. Lebih lanjut, variabel promosi tampaknya memiliki pengaruh yang paling dominan terhadap minat beli.
Keyword: Brand Image, Product Quality, Price, Promotion, Purchase Intention

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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