Judul: Taste and Aroma Mapping of Gayo Arabica Coffee from Cupping Test Results Using Consumer Panelists
Abstrak: Konsumsi kopi di Indonesia mengalami peningkatan setiap tahunnya. Kopi Arabika Gayo merupakan salah satu kopi yang digemari di Indonesia dan sering dijadikan campuran di berbagai house blend coffeeshop dan juga kafe. Cita rasa dari kopi dapat dievaluasi dengan metode cupping test/uji cupping menurut protokol Specialty Coffee Association (SCA). Uji cupping sudah banyak dilakukan di beberapa coffeeshop untuk quality control produk kopi yang mereka gunakan. Namum, belum diteliti apakah penggunaan panelis konsumen pada uji cupping dapat diterapkan atau tidak. Maka dari itu, penelitian ini bertujuan melihat cita rasa beberapa merek komersial kopi Arabika Gayo yang disukai konsumen melalui uji cupping sebagai referensi bagi coffeeshop dan melihat bagaimana hasil uji cupping jika menggunakan panelis konsumen. Penelitian ini dilakukan dengan tahapan antara lain survei konsumen, persiapan sampel uji, uji cupping, pengolahan data, dan analisis data. Uji cupping dilakukan dengan menggunakan 30 panelis konsumen dan atribut yang dinilai sesuai dengan ketentuan SCA. Berdasarkan analisis data pada XLSTAT 2022 menggunakan principal component analysis (PCA), merek kopi Arabika Gayo yang lebih disukai panelis konsumen yaitu sampel AG2. Selain itu juga didapatkan hasil variasi penggunaan panelis konsumen pada uji cupping terjadi gap yang besar.
Keyword: coffee, consumer panelist, cupping test

Judul: Consumer Attitudes and Preferences Toward Gayo Arabica Coffee in East Aceh Regency and Langsa City
Abstrak: Penelitian bertujuan mengidentifikasi keputusan pembelian, juga menganalisis sikap dan preferensi konsumen terhadap kopi arabika gayo. Penelitian ini menggunakan data primer yang diperoleh melalui survei google form. Responden yang berpartisipasi sebanyak 223 orang. Data dianalisis menggunakan analisis deskriptif, analisis multiatribut fishbein, dan analisis conjoint. Hasil penelitian yang diperoleh menunjukkan bahwa proses pengambilan keputusan konsumen melalui lima tahapan keputusan dan hasil perbandingan antara tiga varian kopi arabika yaitu kopi arabika gayo, kopi sidikalang, dan kopi mandheling (lintong). Sikap konsumen terhadap kopi arabika gayo lebih positif sebesar 170,16 poin. Kopi arabika gayo memiliki keunggulan pada atribut rasa, aroma, ketersediaan produk, after taste, dan informasi produk. Hal ini didukung dengan hasil preferensi konsumen pada tingkat kepentingan atribut, atribut rasa memiliki tingkat kepentingan atribut tertinggi pada produk kopi arabika gayo sebesar 30,79 persen. Konsumen juga lebih menyukai kopi arabika gayo yang memiliki rasa manis, aftertaste lengket, aroma yang menyengat, kekentalan yang ringan dan harga Rp 35.000/250g. Produsen harus melakukan perbaikan pada produk yang belum sesuai harapan konsumen, juga meningkatkan dan mempertahankan produk yang sudah memenuhi harapan konsumen., The research aims to identify purchasing decisions, as well as to analyze consumer attitudes and preferences towards gayo arabica coffee. This research uses primary data from an online survey using google forms involving 223 respondents who participated. Data were analyzed using descriptive analysis, fishbein multi-attribute analysis, and conjoint analysis. The research results show that the consumer decision making process goes through five decision stages. The comparison between three variants of arabica coffee, namely gayo arabica coffee, sidikalang coffee, and Mandheling (lintong) coffee show that consumer attitudes towards gayo arabica coffee are more positive by 170.16 points. Gayo arabica coffee has advantages in the attributes of taste, aroma, product availability, aftertaste, and product information. This is supported by the results of consumer preferences on the level of attribute importance; the taste attribute has the highest level of attribute importance in gayo arabica coffee products at 30.79 percent. Consumers also prefer gayo arabica coffee, which has a sweet taste, a lingering aftertaste, strong aroma, light viscosity and a price of Rp 35,000/250g. Therefore, producers need to make improvements to product attributes that do not meet consumer expectations, as well as improve and maintain product attributes that meet consumer expectations.
Keyword: conjoint, fishbein, gayo arabica coffee, purchasing decisions

Judul: Mathematical Model of Dengue Hemorrhagic Fever with Aedes albopictus Mosquitos as Vector
Abstrak: Dengue Hemorrhagic Fever (DHF) is an acute febrile illness caused by a dengue virus. This virus has four serotypes, i.e. Dengue I - IV. The dengue virus is transmitted by various species of Aedes mosquitoes. Mathematical model can be used to study the spread of the disease. The mathematical model discussed in this paper is SEIR model. The main vector of the disease is mosquito of the Aedes albopictus type. In the SEIR model, an analysis is performed to assess the stability of the equilibrium point and numerical simulations. There are two equilibrium points obtained. The first equilibrium point is a disease-free equilibrium (DFE), which is stable, given the basic reproductive number ℜ < 1. The second equilibrium point is called an endemic point, which stability is guaranteed if the value ℜ > 1. The numerical simulations show that increasing mosquitoes mortality rate makes the number of exposed susceptible humans decrease. Furthermore, increase in the average bite of infected mosquito will increase the number of exposed susceptible humans. For the mosquito population, increasing mosquitoes mortality rate will decrease the number of exposed susceptible mosquitoes. Finally, increase in the average bite of infected mosquito will increase the number of exposed susceptible mosquitoes.
Keyword: