Judul: The Influence of Store Atmosphere and
Product Quality on Consumer Satisfaction and Loyalty of Futura Space and
Coffee
Abstrak: RYAN RIDHAL ADHIM. Pengaruh Store Atmosphere dan Kualitas Produk terhadap Kepuasan dan Loyalitas Konsumen Futura Space and Coffee. Dibimbing oleh MIMIN AMINAH. Futura Space and Coffee merupakan salah satu kafe yang terletak di Kota Bogor berdiri pada tahun 2021 dan berlokasi di Jl. Batu Hulung, Margajaya, Kec. Bogor Barat, Kota Bogor. Kafe ini memberikan suasana kebun dan sawah serta berbagai menu minuman yang beragam yang berdampak pada kepuasan konsumen. Penelitian ini bertujuan menganalisis pengaruh store atmosphere dan kualitas produk terhadap kepuasan konsumen dan loyalitas konsumen Futura Space and Coffee. Penelitian ini dilakukan pada konsumen yang pernah berkunjung di Futura Space and Coffee dari Agustus sampai dengan September 2023 dan teknik penarikan sampel yang digunakan yaitu non-probability sampling dengan teknik purposive sampling. Data yang digunakan dari data primer berupa kuesioner dan data sekunder berupa literatur terkait. Metode pengolahan dan analisis data yang digunakan adalah analisis deskriptif dan SEM-PLS melalui second order construct dengan metode embedded two-srage approach. Hasil penelitian menunjukkan bahwa store atmosphere dan kualitas produk memiliki pengaruh yang signifikan terhadap kepuasan konsumen, serta kepuasan konsumen memiliki pengaruh signifikan terhadap loyalitas konsumen., Futura Space and Coffee is a cafe located in Bogor City, founded in 2021 and located on Jl. Batu Hulung, Margajaya, District. West Bogor, Bogor City. This cafe provides a garden and rice field atmosphere as well as a varied drink menu which has an impact on consumer satisfaction. This research aims to analyze the influence of store atmosphere and product quality on consumer satisfaction and consumer loyalty of Futura Space and Coffee. This research was conducted on consumers who had visited Futura Space and Coffee from August to September 2023 and the sampling technique used was non-probability sampling with a purposive sampling technique. The data used is primary data in the form of questionnaires and secondary data in the form of related literature. The data processing and analysis methods used are descriptive analysis and SEM-PLS via second order construct with the embedded two-srage approach method. The research results show that store atmosphere and product quality have a significant influence on consumer satisfaction, and consumer satisfaction has a significant influence on consumer loyalty.
Keyword: Kepuasan konsumen, Loyalitas Konsumen, SEM-PLS, kualitas produk, store atmosphere

Judul: Efek Mediasi Kepuasan Pelanggan pada Pengaruh Store   Atmosphere, Kualitas Produk, dan Lokasi terhadap Loyalitas Pelanggan di Dakara Coffee Bogor
Abstrak: Preferensi konsumen yang terus berubah seiring dengan perubahan tren dan gaya hidup masyarakat merupakan tantangan bagi Dakara Coffee untuk mencapai keberlanjutan bisnis. Upaya pengembangan produk dan atribut kafe seperti store atmosphere dan lokasi diharapkan dapat memenuhi nilai yang diinginkan konsumen sehingga mereka puas dan terus melakukan pembelian ulang serta berpotensi menjadi pelanggan kafe Dakara Coffee. Penelitian ini bertujuan menganalisis efek mediasi kepuasan pelanggan pada pengaruh store atmosphere, kualitas produk, dan lokasi terhadap loyalitas pelanggan Dakara Coffee. Penelitian ini menggunakan data primer dari wawancara terstruktur dengan 105 responden yang diperoleh melalui metode systematic random sampling. Data dianalisis menggunakan Partial Least Squares – Structural Equation Modelling. Hasil penelitian ini menunjukkan bahwa kepuasan pelanggan secara parsial memediasi pengaruh store atmosphere dan lokasi terhadap loyalitas pelanggan Dakara Coffee. Memahami atribut selain kualitas produk seperti store atmosphere dan lokasi usaha dapat membantu dalam perumusan strategi pemasaran Dakara Coffee., Consumer preferences that continue to change along with changes in trends and people's lifestyles are a challenge for Dakara Coffee to achieve business sustainability. Product development efforts and cafe attributes such as store atmosphere and location are expected to meet the desired value of consumers so that they are satisfied and continue to make repeat purchases and potentially become Dakara Coffee cafe customers. This study aims to analyze the mediating effect of customer satisfaction on the effect of store atmosphere, product quality, and location on Dakara Coffee customer loyalty. This study uses primary data from structured interviews with 105 respondents obtained through the systematic random sampling method. Data were analyzed using Partial Least Squares - Structural Equation Modeling. The results of this study indicate that customer satisfaction partially mediates the effect of store atmosphere and location on Dakara Coffee customer loyalty. Understanding attributes other than product quality such as store atmosphere and business location can help in the formulation of Dakara Coffee's marketing strategy.
Keyword: kafe, kepuasan pelanggan, loyalitas pelanggan, preferensi konsumen

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