Judul: Analysis of Quality Attributes in Packaged Chocolate Jam Products Using Caswell’s Classification
Abstrak: Analisis Atribut Mutu pada Produk Selai Cokelat Kemasan Menggunakan Klasifikasi Caswell. Dibimbing oleh MUHAMMAD ARPAH. Selai merupakan produk yang dengan mudah dapat didapatkan di pasaran. salah satu jenis selai yang mudah didapatkan adalah selai cokelat. Selai cokelat dikemas dengan beragam jenis kemasan. Jenis kemasan selai cokelat yang beredar di pasaran antara lain kemasan jar kaca, jar plastik, pouch, dan bowl. Seiring berjalannya waktu inovasi produk pangan terus dilakukan. Informasi terkait produk seperti atribut mutu intrinsik dan ekstrinsik dominan pada produk perlu diketahui. Penelitian ini bertujuan mengetahui atribut mutu dominan pada produk selai cokelat kemasan berdasarkan klasifikasi Caswell dan mengetahui faktor-faktor yang mempengaruhi preferensi konsumen dalam memilih produk selai cokelat dalam kemasan. Data pada penelitian ini diperoleh melalui survei daring berbasis web dengan bantuan google form, kemudian dianalisis dengan metode analisis deskriptif, analisis crosstab, analisis faktor, uji Kruskal-Wallis, dan uji lanjut Dunn. Atribut mutu sertifikasi, sensori dan harga menjadi atribut mutu utama yang menjadi pertimbangan konsumen dalam memutuskan pembelian selai cokelat. Hasil analisis faktor membentuk kelompok tiga faktor baru. Hasil penelitian menjelaskan bahwa selai cokelat dengan kemasan jar kaca memiliki nilai mutu yang lebih tinggi dibanding kemasan lainnya. Selai cokelat kemasan jar kaca mendominasi atribut mutu gizi, sensori, keamanan pangan, nilai, kemasan, merek, iklan, dan distribusi. Selai cokelat kemasan pouch mendominasi atribut mutu harga. Kata kunci: Atribut mutu, kemasan, Klasifikasi Caswell, selai cokelat, Jam is a product that can easily be found in the market. One type of jam that is easy to find in the market is chocolate jam. Chocolate jam is packaged in various types of packaging. The types of chocolate jam packaging that are circulating in the market include glass jars, plastic jars, pouches, and bowls. As time goes by, food product innovation continues to be carried out. Information related to the product, such as the dominant intrinsic and extrinsic quality attributes of the product, needs to be known. This study aims to determine the dominant quality attributes of packaged chocolate jam products based on Caswell's classification and to determine the factors that influence consumer preferences in choosing packaged chocolate jam products. The data in this study were obtained through a web-based online survey with the help of google forms, then analyzed using descriptive analysis methods, crosstab analysis, factor analysis, Kruskal-Wallis test, and Dunn's further test. The quality attributes of certification, sensory and price are the main quality attributes that are considered by consumers in deciding to buy chocolate jam. The results of the factor analysis form a new group of three factors. The results of the study explained that chocolate jam packaged in glass jars had a higher quality value than other packages. Glass jar chocolate jam dominates the quality attributes of nutrition, sensory, food safety, value, packaging, brand, advertising, and distribution. Chocolate jam is packaged in pouch dominating the price-quality attribute. Keywords: Chocolate jam, Caswell’s classification, packaging, quality attribute
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Judul: Analysis of Quality Attributes of Packaged Honey Using Caswell Classification
Abstrak: Beragam variasi pada produk pangan mencerminkan mutu intrinsik dan ekstrinsik produk tersebut. Salah satu karakteristik produk pangan dapat dilihat dari kemasannya. Kemasan produk pangan memiliki fitur yang unik sehingga dapat memberikan perbedaan terhadap produk sejenis. Madu dalam kemasan terdiri dari empat jenis kemasan yang mungkin memiliki atribut mutu berbeda pada setiap tipe kemasan. Atribut mutu yang penting pada madu dalam kemasan akan dinilai, lalu atribut mutu yang dominan akan ditentukan. Tujuan dari penelitian ini adalah menentukan atribut mutu intrinsik dan ekstrinsik yang dominan pada produk madu dalam kemasan berdasarkan klasifikasi Caswell, dan faktor apa saja yang menjadi preferensi konsumen dalam memilih produk madu dalam kemasan. Hasil survey menunjukkan bahwa sertifikasi merupakan atribut mutu dominan pada produk madu dalam kemasan. Sertifikasi BPOM dan Halal adalah sertifikasi yang paling diperhatikan oleh responden. Pada atribut keamanan pangan, responden sangat memperhatikan bahaya biologi. Atribut lain yang termasuk dalam klasifikasi Caswell, khususnya atribut sensori, produsen, dan kandungan gizi juga dipertimbangkan. Walaupun sertifikasi merupakan atribut yang dominan, kombinasi atribut intrinsik dan ekstrinsik memberikan efek yang lebih baik dalam menentukan preferensi konsumen. Dilihat dari jenis kemasannya, madu dengan kemasan botol plastik memiliki atribut dominan nilai tambah, merek, dan iklan. Madu dengan kemasan botol kaca memiliki atribut dominan gizi dan sensori. Madu dengan kemasan jar kaca memiliki atribut dominan keamanan dan pengemasan. Madu dengan kemasan sachet memiliki atribut dominan harga dan distribusi., Food products have several variations that reflect intrinsic and extrinsic quality. One of the characteristics of a product can be seen from the packaging. Food packaging may provide unique and distinct features that can distinguish it from other similar products in terms of quality. Packaged honey consist of four types which may have different quality attributes for each packaging types. The important quality attributes in packaged honey product will be assessed, then the dominant quality attributes will be determined. The objective of this study were to determine the dominant intrinsic and extrinsic quality attributes in packaged honey products based on Caswell classification, and determine what factors influence consumer preferences in choosing packaged honey products. The study conducted by using online survey. The results of responses indicated that certification was the dominant quality attribute in packaged honey products. BPOM and Halal were the important certifications desired by respondents. On the food safety attribute, respondents were especially concerned about biological hazards. Other attributes included in the Caswell classification, especially sensory, producer, and nutritional content are also concidered. Although certification is the dominant attribute, the combination of intrinsic and extrinsic attributes had great effect in determining consumer preferences. Based on the type of packaging, honey with plastic bottles packaging has the dominant attributes of added value, brand, and advertisement. Honey in glass bottles packaging has the dominant attributes of nutritional content and sensory. Honey in glass jar packaging has dominant security and packaging attributes. Honey with sachet packaging has the dominat attribute of price and distribution.
Keyword: Caswell classification, food quality, online survey, packaged honey

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