Judul: Business Resilience Strategies by Fashion SMEs During Covid-19 Pandemic (Case Study: Blok A Tanah Abang Market), Business Resilience Strategies by Fashion SMEs During Covid-19 Pandemic (Case Study: Blok A Tanah Abang Market)
Abstrak: Selama pandemi Covid-19, ribuan Usaha Kecil Menengah (UKM) di Pasar Tanah Abang mengalami kesulitan untuk tetap bertahan akibat masifnya disrupsi dalam berbagai aspek bisnis. Penelitian ini bertujuan untuk (1) mengidentifikasi dampak kebijakan pandemi pemerintah terhadap UKM; (2) merumuskan upaya resiliensi yang telah diadopsi UKM Pasar Tanah Abang; (3) dan mengoptimalisasi strategi yang telah ada untuk membantu lebih banyak UKM busana. Penelitian ini dilakukan dengan menggabungkan wawancara mendalam serta observasi terhadap tiga UKM studi kasus, masing-masing dengan modal bisnis dan jenis produk yang berbeda. Penentuan responden dilakukan menggunakan teknik purposive sampling dan snowball sampling. Hasil penemuan kemudian ditelaah menggunakan skala likert pada Adaptability, Cohesion, Efficiency, Diversity Resilience Attributes dan analisis deskriptif. Ditemukan bahwa UKM yang memiliki tingkat adaptasi tinggi cenderung memiliki efisiensi juga tinggi, sedangkan atribut kohesivitas dan diversitas pada UKM bersifat bertolak belakang. Hasil penelitian menyarankan UKM busana untuk menjelajahi potensi ekspor kreatif, mengadopsi teknologi, mengembangkan skema bisnis kemitraan, inovasi produk, serta memperbaiki perputaran persediaan dan piutang.
Keyword: Covid-19, resilience, SMEs, strategy, Tanah Abang Market

Judul: Vulnerability Analysis and Livelihood Adaptation of MSME Entrepreneurs in Responding to the Covid-19 Pandemic (Case: Tegal Waru MSME Entrepreneur, Ciampea District, Bogor Regency)
Abstrak: Kebijakan PSBB dan PPKM untuk menekan angka penyebaran virus Covid-19 mengubah tatanan kehidupan masyarakat karena masyarakat harus melakukan aktivitas dari rumah. Rumah tangga pengusaha UMKM menjadi rentan akibat sumber ekonominya melemah dan membutuhkan strategi adaptasi agar dapat bertahan di tengah guncangan tersebut. Berbagai bentuk modal nafkah yang dapat diakses rumah tangga harus dimanfaatkan semaksimal mungkin. Tujuan dari penelitian ini adalah menganalisis kerentanan dan upaya adaptasi nafkah pengusaha UMKM dalam merespons pandemi Covid-19. Metode yang digunakan adalah metode kuantitatif melalui kuesioner dan didukung data kualitatif dari wawancara secara mendalam. Dari hasil penelitian didapatkan bahwa rumah tangga pengusaha UMKM relatif rentan terhadap pandemi Covid-19. Namun, tidak terdapat hubungan antar kerentanan nafkah dengan strategi adaptasi., The PSBB and PPKM policies to reduce the spread of the Covid-19 virus have changed the order of people's lives because people have to carry out activities from home. MSME entrepreneur households are vulnerable due to weak economic resources and require adaptation strategies in order to survive in the midst of these shocks. Various forms of livelihood capital that are accessible to households should be utilized as much as possible. The purpose of this study is to analyze the vulnerability and adaptation efforts of MSME entrepreneurs in responding to the Covid-19 pandemic. The method used is a quantitative method through a questionnaire and is supported by qualitative data from in-depth interviews. From the results of the study, it was found that the households of MSME entrepreneurs were relatively vulnerable to the Covid-19 pandemic. However, there is no relationship between livelihood vulnerability and adaptation strategies.
Keyword: Livelihood Vulnerability Index, Livelihood Capital, Livelihood Adaptation Strategy

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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