Judul: Karakteristik Warna Benang Wol Domba Batur yang Diberi Pewarna Alami
Abstrak: Batur sheep wool can be used as handicraft with high economic value. All this time, during the processing of turning wool into handicraft, syntetic color is still used. Syntetic color has side effects to both health and environment. The aim of this research was to study Batur sheep wool quality given natural dyes treatment. The measured variables consisted of water absorbance, dimensional stability, color intensity, and color fade resistance. Repetition was done 3 times to observe water absorbance, dimension stability, color intensity, and color fade resistance. Data were analyzed using T-test. Result showed that comparison between natural and synthetic dyes in water absorbance and shrinkage of Batur sheep wool were not significantly different (P>0.05). Color intensity showed that wool given natural dyes treatment appeared darker than wool given synthetic dyes. Color fade resistance of wool given yellow natural dyes is the best from the other
Keyword: wool yarn, natural dye, batur sheep

Judul: Karakteristik Fisik Wol Domba Batur dan Domba Garut
Abstrak: Batur sheep produce medium wool, while garut sheep produce coarse wool. Knowledge about wool physical characteristics of both breeds are important due to the potential background for utilization to certain product. The aims of this research were to indentify and compare wool physical characteristics of batur sheep (WB) and garut sheep (WG). The variables observed including bundle tenacity, elongation, flammability, sound and thermal insulation properties. The comparison data of sound and thermal insulation ability between board (P), board + batur sheep wool (PWB), and board + garut sheep wool (PWG) were designed by Completely randomized design (CRD) and analyzed by Analysis of Variance (ANOVA) as well as the comparison data of flammability between WB, WG, P and nylon. The other data were analyzed by T-test. The result showed that WB and WG had no significant difference on their tenacity, resilient, and flammability (P > 0.05). PWB and PWG had better sound and thermal insulation ability more than P. Wol had flammability better than P and nylon
Keyword: wool, physical characteristic, garut sheep, batur sheep

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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