Judul: Pertumbuhan dan produksi tanaman akar wangi (Vetiveria zizanioides L. Nash) secara hidroponik pada beberapa komposisi media tanam
Abstrak: This research aimed to determine the effects of the growing media composition on the growth and production of vetiver (Vetiveria zizanioides L. Nash) in a hydroponic system. The research was started from December 2013 to February 2014 and conducted in a greenhouse of the Cikabayan Bawah with elevation of 240 meters above sea level. The research implemented the randomized block design (RBD) with 2 experiments: (1) uncutted root plants, (2) cutted root plants. A single factor used in the research is the growing media composition (v/v) that consists of 3 levels: 100% charcoal husk, charcoal husk:styrofoam (2:1), and charcoal husk:styrofoam (1:1). The results showed that the growing media composition significantly affected the height plants, fresh and dry matter weight of the uncutted root plants, the roots length of the cutted root plants. These research showed that the vetiver growing in the mixed materials (charcoal husk:styrofoam) has a better growth than the one growing in the single materials.
Keyword: Bogor Agricultural University (IPB), styrofoam, media compositions, charcoal husk

Judul: Budidaya Tanaman Akar Wangi (Vetiveria zizanioides (L.) Nash) dalam Wadah: Pengaruh Komposisi Media Tanam dan Jumlah Bibit.
Abstrak: The objectives of this experiment were to determine the effect of media composition and the number of seedlings planted on the growth of hydroponically grown vetiver (Vetiveria zizanioides). Vetiver ‘Verina 2’ variety was grown in polybags in a greenhouse of the Cikabayan Bawah Experimental Farm (240 m above sea level) started from November 2012 to July 2013. This experiment was arranged in a randomized complete block design with two factors and five replications. The first factor was media composition (v/v), consisted of three levels i.e. 100% charchoal husk, charcoal husk : styrofoam (2:1), and charcoal husk : styrofoam (1:1). The second factor was the number of seedlings in one polybag consisted of one seedling and two seedlings. The results showed that there were no interaction effects of media composition and number of seedlings planted to plant growth and root growth of vetiver. Plants grown in charcoal husk : styrofoam (1:1) medium had significantly higher number of plants per cluster, higher number of leaves, higher chlorophyll and carotenoid contents, higher number of roots, and longer primary roots than those in other media compositions. Planting two seedlings per polybag resulted in higher number of plant per cluster, higher number of leaves, higher shoot fresh and dry weight, and higher number of roots than one seedlings per polybag. These results showed that planting two seedlings in polybag containing charcoal husk : styrofoam (1:1) resulted in the best vegetative growth and root growth of vetiver.
Keyword: 

Judul: Analisis Deteksi dan Identifikasi Kecurangan pada Skema Modifikasi (k,n) Mignotte.
Abstrak: Skema pembagian rahasia (secret sharing scheme) adalah salah satu metode untuk memecah kunci rahasia menjadi beberapa bagian. Hal ini dilakukan untuk menjaga keamanan pada kunci kriptografik. Skema threshold ...dst
Keyword: chinese remainder theorem (CRT), kriptografi, Mignotte, secret sharing scheme