Judul: Utilization of Natural Plant Dyes for Palembang Jumputan Fabric
Abstrak: Kain Jumputan Palembang berawal pada masa kerajaan Sriwijaya dan merupakan salah satu jenis kain yang digunakan sebagai bahan pakaian. Penelitian ini bertujuan mengidentifikasi karakteristik pengrajin kain Jumputan, mengidentifikasi tumbuhan yang digunakan sebagai pewarna alami pada kain jumputan, serta mengidentifikasi cara memperoleh bahan baku pewarna alami dan cara pengolahannya. Metode penelitian ini menggunakan teknik snowball sampling. Hasil penelitian menunjukkan bahwa pengrajin kain jumputan baik laki-laki maupun perempuan dalam usia produktif relatif sama banyaknya. Tingkat pendidikan pengrajin kain jumputan didominasi oleh lulusan SMA dan sumber pengetahuan dalam proses pembuatan kain jumputan Palembang yang menggunakan tumbuhan pewarna alami diperoleh dari tempat kerja dan secara turun-temurun. Pengrajin kain jumputan Palembang selain menggunakan pewarna alami juga menggunakan pewarna sintetis. Terdapat 11 spesies tumbuhan yang dimanfaatkan sebagai pewarna alami yang diperoleh dengan cara membeli dan memungut di lingkungan sekitar. Bagian tumbuhan berupa daun, kulit buah, kulit batang dan batang adalah yang banyak digunakan sebagai pewarna alami karena mudah diperoleh dan menghasilkan warna yang menarik dan spesifik.
Keyword: craftsmen, jumputan fabric, natural dyes

Judul: Ethnobotanical Study of Natural Food and Clothing Dyes in Belitung Regency
Abstrak: Perkembangan zaman serta kemajuan teknologi membuat pengetahuan akan pewarna alami pangan maupun sandang semakin berkurang dan banyak yang beralih menggunakan pewarna sintetis. Penelitian ini bertujuan untuk mengidentifikasi karakteristik responden, pemanfaatan dan status tumbuhan pewarna alami pangan maupun sandang. Metode penelitian ini menggunakan teknik snowball sampling dan purposive sampling. Hasil penelitian menunjukan bahwa responden pewarna alami pangan maupun sandang didominasi oleh perempuan dengan usia produktif. Tingkat pendidikan mayoritas lulusan SMA/SMK dan sumber pengetahuan diperoleh di tempat kerja dan secara otodidak. Terdapat 15 spesies pewarna alami pangan dan 19 spesies pewarna alami sandang yang dimanfaatkan serta sebagian besar diperoleh dengan cara membeli. Bagian dan warna yang dihasilkan pada pangan dan sandang didominasi bagian daun dan warna kuning. Tumbuhan pewarna yang termasuk langka teridentifikasi 12 spesies, yaitu 2 spesies Appendix II CITES, 6 spesies Least Concern IUCN, 1 spesies Near Threatened IUCN, dan 3 spesies Data Deficient IUCN, The development of the times and technological advances have made knowledge of natural food and clothing dyes decrease and many have switched to using synthetic dyes. This research aims to identify the characteristics of respondents, utilization and status of natural coloring plants for food and clothing. This research method uses snowball sampling and purposive sampling techniques. The results showed that respondents of natural food and clothing dyes were dominated by women of productive age. The education level of the majority of SMA/SMK graduates and the source of knowledge obtained at work and self-taught. There are 15 species of food natural dyes and 19 species of clothing natural dyes that are utilized and most of them are obtained by purchasing. The parts and colors produced in food and clothing are dominated by the leaves and yellow color. There are 12 rare coloring plants identified, namely 2 CITES Appendix II species, 6 IUCN Least Concern species, 1 IUCN Near Threatened species, and 3 IUCN Data Deficient species.
Keyword: Batik, ecoprint, natural dyes, plants

Judul: A Continuous Vaccination Strategy in the SVIR Epidemic Model
Abstrak: Vaccination is conducted to minimize the spread of a disease. The vaccination is usually done several times within a fixed time interval. In the SVIR model, it is assumed that individuals do not get immediate immunity following a vaccination program. So according to process of vaccination on SVIR model, there are two strategies, i.e. the continuous vaccination strategy (CVS) and the pulse vaccination strategy (PVS). In this study, only the CVS strategy in epidemic model SVIR is considered. Results of the study indicate that dynamics of the CVS system depends on the basic reproductive number. If the basic reproductive number is less than one, then the disease-free fixed point is asymptotically stable. It means that the disease will eventually disappear from the population. Conversely, if the basic reproductive number is greater than one, then the endemic fixed point is asymptotically stable, which means that the disease will remain exist in the population. Simulation result shows that the vaccination would minimize the spread of disease by reducing the basic reproductive number. If the time for the vaccinated recipients to obtain the immunity, as well as a possibility of vaccinated recipients to be infected are neglected, then the disease will be eradicated. This condition is called an over-evaluating effect of vaccination.
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