Judul: Positioning analysis of cashew nut in consumer’s mind and factors that affect consumer’s purchase decision (case study in pt. Sentra Family Food Indonesia, West Jakarta)
Abstrak: Cashew nuts are snacks, which rarely to be consumed as a daily snack because many consumers are not accustomed to eat nuts because of the high fat content. Cashew nuts producers need to know the reason why the consumers are not accustomed to eat nuts due to health reasons or due to other factors. The purpose of this study is to analyze the position of cashew nut products which embedded in the consumer mind, to determine the other factors that affect purchasing decisions and to determine the marketing strategies recommendation. The questionnaires are spread around Jakarta, where 160 respondents never consumed cashew nuts, by the composition of female (67%) with age 17- 26 years (56%), unmarried people (60%), private employees (30%) and students (28%) with income of Rp 2.500.000-Rp 3.500.000 (35%). In the purchase decision, the reasons why the consumers buy cashew nuts because of some reason such as: the nuts tastes good and varied (64%), the cashew nuts mostly eat during leisure time at home (54%), the cashew nuts are well known because of the advertisement from the public media and family information about the popular brand which is Caspy (31%) with the uncertain frequency purchases (90%). On the Biplot analysis result the vector attribute that direct into the Caspy brand of cashew nuts is the price attribute which mean that Caspy brand price is cheaper than the competitor brand. The factor that affects the consumer to buy the cashew nuts is the individual different factor with the most affected variable is life style while the unaffected factor is the health reason that had been analyzed by factor analysis. The marketing strategies that being suggested are the cashew nut marketing in any supermarket and minimarket, promote the brand purchase by using electronic media that can reach higher scope of consumer and create the varied packaging size.
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Judul: Strategy to Expand the Market for SachiFit Roasted Sacha Inchi Snack Products
Abstrak: Industri camilan di Indonesia terus berkembang seiring dengan pertumbuhan ekonomi dan perubahan gaya hidup masyarakat, termasuk dalam hal konsumsi camilan sehat. Meskipun tingkat persaingan di industri camilan semakin ketat, kacang panggang SachiFit sebagai salah satu camilan sehat mengalami tren penurunan penjualan. Oleh karena itu, penelitian ini bertujuan menganalisis persepsi konsumen terhadap tingkat kepentingan dan kinerja atribut produk camilan kacang panggang SachiFit, serta memformulasikan strategi perluasan pasarnya yang didasarkan pada bauran pemasaran 4P dan Importance Performance Analysis (IPA). Penelitian ini menyampaikan hasil analisis tingkat kepentingan dan kinerja atribut bauran pemasaran camilan kacang panggang SachiFit yang berbeda untuk tiga kategori responden berdasarkan pengetahuan dan pengalaman terhadap produk, yang terdiri dari konsumen aktual dan konsumen potensial. Hasil analisis kemudian diturunkan menjadi strategi umum yang dapat diimplementasikan oleh SachiFit berdasarkan kerangka bauran pemasaran 4P, The snack industry in Indonesia continues to thrive alongside economic growth and changing societal lifestyles, particularly in the realm of healthy snack consumption. Despite the increasingly competitive nature of the snack industry, SachiFit roasted nuts, as one of the healthy snack options, is experiencing a declining sales trend. Therefore, this research aims to analyze consumer perceptions regarding the importance and performance levels of attributes in SachiFit roasted nuts products. Additionally, it formulates market expansion strategies based on the 4P marketing mix and Importance Performance Analysis (IPA). The study presents the results of the analysis of the importance and performance levels of the marketing mix attributes of SachiFit roasted nuts, differentiated for three respondent categories based on their knowledge and experience with the product, comprising current actual consumers and potential consumers. The findings of this analysis are then translated into general strategies that can be implemented by SachiFit based on the 4P marketing mix framework.
Keyword: importance performance analysis, marketing mix, SachiFit roasted peanut snacks

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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