Judul: Analisis Ekuitas Merek Kopiluvium Sebagai Sociopetal Space
Abstrak: Kopiluvium memiliki tujuan bisnis terdekat berupa ekspansi bisnis yang memerlukan kekuatan ekuitas merek demi mendukung terwujudnya tujuan dan rencana bisnis. Analisis ekuitas merek juga dapat digunakan sebagai bahan evaluasi bagi pengelola Kopiluvium. Tujuan penelitian ini adalah untuk mengidentifikasi karakteristik konsumen, menganalisis 4 elemen ekuitas merek Kopiluvium dan merancang strategi pemasaran yang tepat untuk memperkuat ekuitas merek Kopiluvium sebagai sociopetal space. Metode penentuan responden menggunakan purposive sampling dan perhitungan rumus Slovin yang menghasilkan jumlah responden sebanyak 100 orang. Metode pengolahan data yang digunakan adalah uji coba kuesioner, analisis deskriptif, nilai rata-rata skala likert dan uji Cochran. Hasil dari penelitian ini adalah konsumen didominasi oleh remaja laki-laki dengan kelas ekonomi menengah kebawah dengan tujuan untuk berkumpul dengan teman, kesadaran merek Kopiluvium sangat baik, asosisasi merek Kopiluvium belum membentuk brand image yang melekat di benak konsumen, persepsi kualitas Kopiluvium baik, serta loyalitas konsumen terhadap merek sangat baik dan sudah membentuk piramida harapan loyalitas konsumen. Dari hasil analisis ekuitas merek, strategi pemasaran Kopiluvium diprioritaskan untuk mengarah kepada harmonisasi keunikan sociopetal space, pembaharuan dalam social media marketing, dan penguatan atribut untuk memunculkan brand image di benak konsumen.
Keyword: sociopetal space, ekuitas merek, strategi pemasaran

Judul: Analisis Ekuitas Merek dari Kopiko 78ºC Berdasarkan Dimensi-dimensi Ekuitas Merek dan Usaha-usaha Pemasaran.
Abstrak: The Increasing number of coffee beverage on the market make the competition between coffee brands has been increasing. To maintain market needs some research to evaluate brand equity. Brand equity to be influenced by the dimensions of brand equity and marketing efforts. Dimensions of brand equity include brand awareness, brand association, brand loyalty, and perceived quality. Dimensions of brand equity and marketing efforts are variables that can not be measured directly, it is named latent variables. Statistical analysis that can be used to analyze in this case is structural equation modeling (SEM). This research used data from survey of active student S1 IPB 2015 who had purchase and consume Kopiko 78ºC. The results showed that brand loyalty and perceived quality had positive influence on brand equity. While awareness and brand association had negative influence on brand equity. The most influential marketing effort on brand loyalty is intensity of distribution. The most influential marketing effort on perceived quality is price. The most influential marketing effort on brand equity is price.
Keyword: brand equity, marketing efforts, structural equation modeling

Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model