Judul: The Influence of Price, Location, and Service Quality on The Purchase Decision of K-Pop Music Concert Tickets in Jabodetabek
Abstrak: Adanya pandemi Covid-19 yang mulai mereda dan izin yang diberikan oleh pemerintah, mendorong para pebisnis Event Organizer (EO) untuk mengadakan kembali konser musik K-Pop. Penelitian ini bertujuan untuk mengidentifikasi karakteristik pembeli tiket konser musik K-pop di Jabodetabek dan menganalisis pengaruh harga, lokasi, dan kualitas pelayanan terhadap keputusan pembelian tiket konser musik K-Pop di Jabodetabek. Adapun teknik penarikan sampel pada penelitian ini dilakukan menggunakan metode non-probability sampling dengan teknik voluntary sampling. Untuk total responden pada penelitian ini yaitu sebanyak 177 responden yang pernah menonton konser musik K-Pop dan berdomisili di Jabodetabek. Metode analisis data yang digunakan adalah analisis deskriptif dan analisis Structural Equation Modelling-Partial Least Square (SEM-PLS). Hasil penelitian ini menunjukkan bahwa harga memiliki pengaruh yang positif dan signifikan terhadap keputusan pembelian tiket konser musik K-Pop, sedangkan lokasi dan kualitas pelayanan tidak berpengaruh signifikan terhadap keputusan pembelian tiket konser musik K-Pop di Jabodetabek., The presence of the Covid-19 pandemic that had begun to subside and the permission granted by the government, encouraged Event Organizers (EO) to organize K-Pop music concerts once again. This research aimed to identify characteristics of music concert K-pop ticket buyers in Jabodetabek and analyze the influence of price, location, and service quality on the decision to purchase K-Pop concert tickets in Jabodetabek. As for the sampling technique used in this research, it was conducted using the non-probability sampling method with voluntary sampling technique. The total number of respondents in this study was 177 individuals who had attended K-Pop music concerts and domiciled in Jabodetabek. The data analysis method used was descriptive analysis and Structural Equation Modeling-Partial Least Square (SEM-PLS) analysis. The results of this study showed that price had a positive and significant influence on the decision to purchase K-Pop concert tickets, while location and service quality did not have a significant influence on the decision to purchase K-Pop concert tickets in Jabodetabek.
Keyword: event organizer, harga, keputusan pembelian, kualitas pelayanan, lokasi

Judul: Pengaruh Social Media Marketing, e-WOM dan Kualitas Produk terhadap Keputusan Pembelian Produk Fanmade K-Pop
Abstrak: Berkembangnya aliran musik ini yang diiringi dengan naiknya populasi penggemar K-Pop, sehingga menyebabkan terbentuknya berbagai komunitas penggemar di Indonesia. Para penggemar akan menginginkan barang-barang yang berkaitan dengan idolanya. Hal ini merupakan suatu peluang bagi para penggemar untuk memulai ide bisnis fanmade yang berkaitan dengan K-Pop. Penelitian ini bertujuan untuk mengidentifikasi karakteristik konsumen, menganalisis pengaruh social media marketing, e-WOM, dan kualitas produk terhadap keputusan pembelian serta menganalisis faktor yang paling berpengaruh terhadap keputusan pembelian produk fanmade K-Pop. Metode analisis data yang digunakan adalah analisis deskriptif dan analisis SEM-PLS. Penarikan sampel dilakukan dengan menggunakan metode non-probability sampling dengan teknik purposive sampling. Hasil penelitian menunjukan bahwa social media marketing, e-WOM dan kualitas produk memiliki pengaruh yang positif dan signifikan terhadap keputusan pembelian dengan variabel social media marketing memiliki pengaruh yang lebih kuat., The growth of K-Pop music is also accompanied by the growing number of K-Pop fans, resulting in the emergence of various K-Pop communities in Indonesia. The fans will want to have items that are associated with their idols. It allows fans the opportunity to start a fan-made business related to K-Pop. The purpose of this research is to identify consumer characteristics and to analyze the effect of social media marketing, e-WOM, product quality, and the most influential factor contributing to the purchase decisions of K-Pop fanmade products. In drawing the samples, the researcher used the non-probability sampling method with the purposive sampling technique. The data analysis method used descriptive analysis and SEM-PLS analysis. The result showed that social media marketing, e-WOM, and product quality had a positive and significant effect on purchasing decisions, with the social media marketing variable being the strongest.
Keyword: e-WOM, Fanmade K-Pop, Keputusan pembelian, Kualitas produk, Social media marketing

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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