Judul: Marketing Strategy for the Dapur Tahu Cafe in Padang City during the Covid-19 Pandemic
Abstrak: Dapur Tahu merupakan cafe yang menyediakan berbagai menu olahan tahu. Pada masa pandemi Covid-19, Dapur Tahu mengalami penurunan pendapatan. Tujuan dari penelitian ini untuk mengidentifikasi faktor internal dan eksternal, merumuskan alternatif strategi dan menetapkan strategi pemasaran yang diprioritaskan untuk diterapkan oleh Dapur Tahu. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif dan analisis tiga tahap formulasi strategi. Alat analisis yang digunakan adalah matriks IFE, matriks EFE, matriks IE, matriks SWOT, dan matriks QSP. Hasil analisis matriks IFE menghasilkan Dapur Tahu memiliki sepuluh kekuatan dan dua kelemahan, dan pada matriks EFE menghasilkan Dapur Tahu memiliki memiliki lima peluang dan enam ancaman. Berdasarkan hasil analisis matriks IE, menunjukkan bahwa Dapur Tahu berada pada posisi tumbuh dan membangun. Analisis matriks SWOT didapatkan delapan alternatif strategi. Prioritas strategi yang dihasilkan dari QSPM adalah meningkatkan kegiatan promosi secara online dan offline. Saran untuk Dapur Tahu antara lain melakukan kegiatan promosi secara lebih gencar dari sebelumnya, memberikan pelayanan yang lebih pro pada penanganan Covid-19, mengoptimalkan penggunaan teknologi informasi dan komunikasi,dan menambah dekorasi interior., Dapur Tahu is a cafe that provides a variety of processed tofu menus. During the Covid-19 pandemic, Dapur Tahu experienced a decrease in income. The purpose of this research is to identify the internal and external factors, to formulate alternative strategies and to set prioritiezed marketing strategies which can be applied by Dapur Tahu. The methods used in this reasearch is the descriptive analysis and three stage formulation analysis. The tools of analysis that used are IFE matrix, EFE matrix, IE matrix, SWOT matrix and QSP matrix. Based on the result of the IFE matrix, Dapur Tahu have ten strengths and two weaknesses, and the EFE matrix resulted in Dapur Tahu having five opportunities and six threats. Based on the results of the IE matrix analysis, it shows that Dapur Tahu is in a position of grow and build. Through SWOT matrix analysis, six alternative strategies were found. The priority strategy is increase online and offline promotional activities. Suggestions for Dapur Tahu are to carry out promotional activities more intensively, provide more supportive service in handling Covid-19, optimize the use of information and communication technology, and add interior decorations.
Keyword: IFE, EFE, IE, SWOT, QSPM

Judul: Marketing Strategy Analysis of Malindo Corner Café in Kabupaten Kebumen
Abstrak: Salah satu daerah dengan jumlah kafe yang semakin banyak dalam lima tahun terakhir adalah Kabupaten Kebumen. Namun, akibat pandemi Covid-19 terjadi penurunan jumlah pengunjung ke kafe. Fenomena ini juga dialami oleh Malindo Corner, sebuah kafe yang berdiri di Kabupaten Kebumen lima tahun lalu. Sehingga perlu dilakukan evaluasi strategi pemasarannya di masa pandemi dan merumuskan kembali strategi menghadapi new normal. Tujuan penelitian adalah mengidentifikasi faktor internal dan eksternal yang memengaruhi strategi pemasaran perusahaan dalam bertahan dan melewati pandemi dibandingkan pesaingnya, merumuskan dan menetapkan alternatif strategi pemasaran yang dapat diterapkan untuk meningkatkan penjualan kembali. Metode yang digunakan adalah analisis deskriptif dan perumusan terdiri dari tahap pencocokan dan pengambilan keputusan. Alat yang digunakan adalah STP, bauran pemasaran 7P, SWOT, dan QSPM. Berdasarkan analisis lingkungan internal dan eksternal terdapat tiga kekuatan, dua kelemahan, dua peluang dan satu ancaman. Hasil analisis matriks SWOT terdapat lima alternatif strategi, sedangkan prioritas alternatif strategi yang didapatkan adalah optimalisasi kegiatan promosi secara online dengan multi platform sosial media maupun offline serta meningkatkan penggunaan sistem informasi., One of the areas with an increasing number of cafes in the last five years is Kabupaten Kebumen. However, due to the covid 19 pandemic there was a decrease in the number of visitors to the cafes. This phenomenon is also experienced by Malindo Corner, a cafe that was established in Kabupaten Kebumen five years ago. So it is necessary to evaluate its marketing strategies during the pandemic and reformulate the strategy for facing the new normal. The purpose of the study is to identify the changes of internal and external factors that influence a company's marketing strategy in surviving and getting through the pandemic compared to its competitors, to formulate and to establish marketing strategy alternatives that can be applied to increase the sale. The method used is descriptive analysis and formulation consists of the stages of matching and decision making. The tools used are STP, 7P marketing mix, SWOT, and QSPM. External and internal assessments reveal that Malindo Corner’s strengths as a cafe are a comfortable, clean café atmosphere, spacious capacity, and complete facilities, while its social media promotion is its weakness. The opportunities that are identified was the increasing purchasing power of the Kabupaten Kebumen people, while the threat is the high level of competition due to the innovation, and promotion effort of other cafest. The results of the SWOT matrix analysis have five alternative strategies, while the priority of alternative strategies obtained is the optimization of online promotional activities with multi-platform social media and offline and increasing the use of information systems.
Keyword: Cafe, Marketing, Pandemic, QSPM, SWOT

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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