Judul: Rancangan kemasan tunggal pada kubis (Brassica oleracea L. var. Capitata) untuk transportasi
Abstrak: Penanganan pascapanen kubis hingga saat ini masih dilakukan secara tidak optimal, sehingga susutnya masih besar. Penanganan pascapanen yang baik dapat mengurangi kerusakan kubis, salah satunya adalah penggunaan kemasan yang tepat pada saat transportasi. Penelitian ini dilakukan untuk merancang kemasan kardus karton bersekat untuk transportasi dan dibandingkan dengan kemasan keranjang plastik, dan karung yang biasa digunakan oleh pedagang antar kota dan petani. Kemasan yang dirancang memiliki dimensi (55 x 38 x 25) cm menggunakan bahan kemasan karton tipe flute BC dengan ventilasi sebesar 1% dari total luasan dinding kemasan. Kemasan kardus ini dirancang untuk kapasitas 8 buah kubis (rata-rata berdiameter 16.68 cm). Simulasi transportasi dilakukan selama 2 jam dengan tiga perlakuan vibrasi. Berdasarkan pengamatan kerusakan mekanis dan susut bobot, kemasan kardus karton memiliki tingkat kerusakan paling rendah dibandingan dengan kemasan lainnya yaitu 0.42 %, 1.92 %, dan 2.84 % pada masing-masing perlakuan vibrasi, sehingga dapat disimpulkan bahwa rancangan kemasan kardus lebih baik dalam mempertahankan mutu produk kubis saat transportasi.
Keyword: Cabbage, Carton, Damage, Packaging, Transportation, Biosystem, Post harvest handling, Post harvest losses, Packaging, Plastic bascet, Transport simulation, Weight lost, Vibration treatment

Judul: Rancangan Kemasan Karton Bergelombang dengan Bahan Pengisi untuk Transportasi Jagung Semi (Baby corn)
Abstrak: Baby corn packaging usually use crate during transportation whereas it could make mechanical damages to the product like scratch, bruised, broke, and ripen rapidly. The purpose of this research was to design a proper packaging using carton material and filled material that could maintain the quality of baby corn during the transportation. In this research, C flute and BC flute, that has dimension (31x23x9)cm, (46.5x23.5x9)cm, (32x24x10)cm, (47.5x24.5x10)cm, were used as the outer packaging, B flute as inner, PE plastic as primary packaging, and pieces of paper as filling material. K4C and K6C were selected because those more adaptable in cold storage, those has good compression strength, and lower cost. Transportation conversion simulation result during two hours is similar to 169.553 km out of town length or 2.83 hours with 60 km/hour speed. Mechanical damage of the K4C is 17% meanwhile the K6C 15.9%, this is caused by the pieces of paper which used as the filling material around the product. The treatment of packaging directly influent to the parameter reduced of weight, hardness, and total dissolved solids of baby corn. On the other hand, the treatment of packaging indirectly influent the water content in the baby corn.
Keyword: simulation transportation, corrugated flute, packaging, baby corn, Bogor Agricultural University (IPB)

Judul: The Exploration of Discrete Logarithm over Finite Field GF(3m)
Abstrak: The security of many public~key algorithms is based on the problem of finding discrete logarithms. The generalized discrete logarithm problem is the following: given a finite cyclic group G of order n, a generator a of G, and an element fl E G, find the integer x, 0 ~ x ~ n - 1, such that 0: = fl. Algorithm for discrete logarithm problem focused on Menezes et al. (1997) that consist of exhaustive search algorithm, the baby-step giant-step algorithm, Pollard's rho algorithm, Pohlig-Hellman algorithm, and index-calculus algorithm. These algorithms are explorated to be used in discrete logarithm problem over finite field GF(3m ). The exploration also produces some algorithms, i.e. naif negative algorithm, baby-step mother-step algorithm, baby-step mother free-step algorithm, and baby-step free-step algorithm. All algorithms implemented using Maple 11. The Pohlig-Hellman and baby-step giant-step algorithms are efficient enough to be used in discrete logarithm problem over finite field GF(3m ) for m < 20.
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