Judul: Strategi Optimasi Pemasaran Digital untuk Meningkatkan Brand Awareness terhadap Gula Kelapa Koperasi WS Purworejo
Abstrak: Coconut (Cocos nucifera L.) is one of the commodities in Purworejo, Central Java. Palm sugar is coconut sugar in the form of powder that can be made from sap that has been added to laru solution and heated at a certain temperature. This research aims to increase brand awareness through digital marketing. Digital marketing is a marketing communication channel used by marketers to support their products and services to the market, especially the sale and purchase of products and services through computer networks or internet networks. Brand awareness is closely related to the ability of a brand's presence and imprint in the minds of customers to identify the brand in various market conditions. The lack of marketing through digital means that the products marketed by the WS Cooperative are still unknown to the public. In its business process, the WS Cooperative has implemented a 4C marketing mix strategy, but it is still not optimal. To overcome these problems, the WS Cooperative can implement a new 4C marketing mix by optimizing the website, ecommerce, and social media to attract consumers' interest in submitting their suggestions and input., Kelapa (Cocos nucifera L.) merupakan salah satu komoditi yang ada di Purworejo, Jawa Tengah. Gula semut adalah gula kelapa berbentuk serbuk yang dapat dibuat dari nira yang telah ditambahkan larutan laru dan dipanaskan pada suhu tertentu. Tujuan dari penelitian ini meningkatkan kesadaran merek melalui pemasaran digital. Pemasaran digital adalah saluran komunikasi pemasaran yang digunakan oleh pemasar untuk mendukung produk dan layanannya ke pasar, terutama penjualan dan pembelian produk, dan layanan melalui jaringan komputer atau jaringan internet. Kesadaran merek sangat terkait dengan kemampuan kehadiran suatu merek dan jejak di benak pelanggan untuk mengidentifikasi merek tersebut dalam berbagai kondisi pasar. Kurangnya pemasaran melalui digital membuat produk yang dipasarkan oleh Koperasi WS masih belum dikenal oleh masyarakat. Dalam proses bisnisnya, Koperasi WS telah menerapkan strategi bauran pemasaran 4C, namun masih belum optimal. Untuk mengatasi permasalahan tersebut, Koperasi WS dapat mengimplementasikan bauran pemasaran 4C yang baru dengan mengoptimalkan website, e-commerce, dan jejaring sosial untuk menarik minat konsumen dalam menyampaikan saran dan masukannya.
Keyword: Brand awareness, digital marketing, marketing mix 4C, palm sugar, Bauran pemasaran 4C

Judul: Strategy and Business Development Model for Coconut Liquid Sugar (Syrup) Products at Koperasi W Purworejo
Abstrak: Produk gula cair (sirup) kelapa memiliki peluang ekspor dan pasar dalam negeri yang baik. Produk sirup kelapa lebih praktis digunakan dan lebih sehat karena dibuat secara organik. Produk gula cair hasil produksi dari Koperasi W masih memiliki kekurangan, karena adanya endapan pada produk gula cair (sirup) kelapa setelah penyimpanan beberapa hari. Perbaikan proses telah berhasil dilakukan, sehingga prospek pasar dalam negeri dan pasar ekspor cukup besar, namun perlu perbaikan-perbaikan sebagai upaya pengembangan model bisnis yang berkelanjutan dengan memperhatikan faktor lingkungan. Tujuan penelitian ini adalah mengidentifikasi faktor internal dan eksternal lingkungan bisnis menggunakan matriks evaluasi faktor internal dan eksternal (IFE dan EFE), merumuskan strategi alternatif menggunakan matriks SWOT (Strength, Weakness, Opportunity, Threats), mengambil keputusan strategi yang dijalankan melalui penilaian Quanititative Strategic Planning Matrix (QSPM), dan merencanakan model bisnis berkelanjutan dengan menggunakan pendekatan Business Model Canvas (BMC). Hasil prioritas utama dari penilaian QSPM berdasarkan nilai Total Attractive Score (TAS) yang diperoleh sebesar 6,111. Koperasi W memiliki kekuatan utama yaitu keaslian dan kualitas yang baik, kelemahan utama yaitu teknologi dan pemeliharaan sumber daya alam masih rendah, peluang untuk memanfaatkan pasar untuk penjualan di luar negeri, dan ancaman utama dengan adanya keterbatasan pengetahuan teknologi untuk pemasaran. Alternatif strategi yang terpilih yaitu memanfaatkan peluang pasar dengan meningkatkan kapasitas produksi, menciptakan produk yang berkualitas dan asli melalui pengoptimalan sumber daya alam, kelimpahan bahan baku dan sumber daya manusia., Coconut liquid sugar (syrup) products have good export and domestic market opportunities. Coconut syrup products are more practical to use and healthier because they are made organically. Liquid sugar products produced by Koperasi W still have a weakness, due to the deposition of liquid sugar (syrup) coconut after several days of storage. Process improvements have been successfully carried out, so that the prospects for the domestic market and export market are quite large, but improvements are needed as an effort to develop a sustainable business model by taking into account environmental factors. The purpose of this study is to identify internal and external factors of the business environment using an evaluation matrix of internal and external factors (IFE and EFE), formulate alternative strategies using a SWOT matrix (Strength, Weakness, Opportunity, Threats), make strategic decisions that are carried out through an assessment of Quanititative Strategic Planning Matrix (QSPM), and plan a sustainable business model using the Business Model Canvas (BMC) approach. The main priority result of the QSPM assessment based on the Total Attractive Score (TAS) score obtained is 6.111. Koperasi W has main strengths, namely authenticity and good quality, the main weakness is technology and maintenance of natural resources is still low, opportunities to take advantage of markets for overseas market, and the main threat is the limited knowledge of technology for marketing. The chosen alternative strategy is to take advantage of market opportunities by increasing production capacity, creating quality and original products through optimizing natural resources, abundance of raw materials and human resources.
Keyword: Gula cair, strategi pengembangan, quantitative strategic planning matrix, liquid sugar, Development strategy, quantitative strategic planning matrix

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