Judul: Penentuan Masak Fisiologi dan Ketahanan Benih Kenikir (Cosmos caudatus Kunth) terhadap Desikasi
Abstrak: Cosmos caudatus Kunth is one of the indigenous plant species that can be used as natural herbal medicine, and vegetables. Plant Propagation of Cosmos caudatus Kunth using seeds. This research aimed was to determine the period of physiological maturity and to study the resistance of Cosmos caudatus Kunth seed to dessication. The research conducted at Medicinal Gardens Conservation Unit (MGCU) and Seed Technology Laboratory, IPB in December 2013 to April 2014. The first research used a completely randomized design (CRD) with 1 factor for 5 different harvest period (24, 28, 32, 36, 40 days after flowering (DAF)). The second experiment used a completely randomized design (CRD) with 2 factors, those are drying method and time. The drying methods used were of 2 types (drying with heated (38-42 °C and RH 30-36%), (drying unheated (28-32°C and RH 40-44%)) and times of drying (control, 1, 2, 3, 4, 5 hours). The first research revealed that seed physiological maturity can be determined from the suitable harvest period of 40 days after flowering with the best viability and max dry weight of seed. The second research shows the Cosmos caudatus seeds not dried produce higher viability and vigor than dried seeds. Dessication using heating methods have lower viability and vigor than seeds dried with unheated and control methods.
Keyword: seed harvest period., natural herbal medicine, drying methods, box dryer

Judul: Penentuan Kondisi Simpan untuk Mempertahankan Viabilitas dan Vigor Benih Kenikir (Cosmos caudatus Kunth.).
Abstrak: Kenikir (Cosmos caudatus Kunth.) merupakan salah satu jenis sayuran indigenos di Indonesia yang dikonsumsi dalam bentuk segar sehingga perlu ditanam terus-menerus. Benih harus tersedia secara kontinyu. Kondisi simpan yang efisien untuk mempertahankan viabilitas dan vigor benih kenikir belum banyak diteliti, oleh karena itu penelitian dilakukan. Penelitian ini dilakukan di Laboratorium Penyimpanan dan Pengujian Mutu Benih, IPB, dari Januari sampai Juli 2016. Penelitian ini dilaksanakan dalam rancangan petak tersarang dua faktor dengan empat ulangan. Faktor pertama adalah suhu ruang simpan yang terdiri atas 4 taraf, yaitu suhu 27 ºC-30 ºC (suhu kamar); 17-21 ºC (suhu ruang ber-AC); 2-12 ºC (refrigerator), dan -5-(-13) ºC (freezer). Faktor kedua adalah jenis kemasan yang terdiri dari 3 taraf, yaitu plastik polietilen, alluminium foil, dan botol kaca, tersarang dalam faktor suhu ruang simpan. Hasil penelitian menunjukkan penyimpanan benih kenikir pada suhu 17-21˚C (ruang ber-AC), 2-12˚C (refrigerator) dan -13˚C-(-5˚C) (freezer) menggunakan kemasan plastik polietilen, alluminium foil, dan botol kaca dapat mempertahankan kadar air, viabilitas, dan vigor selama 24 minggu. Penyimpanan pada suhu 27-31˚C (kamar) harus menggunakan alluminium foil dan botol kaca untuk mempertahankan kadar air, viabilitas, dan vigor. Penyimpanan pada suhu 27-31˚C (kamar) dalam kemasan alluminium foil merupakan penyimpanan yang paling efisien.
Keyword: Asteraceae, daya berkecambah, sayuran indigenos, suhu kamar

Judul: Pemodelan Harga Saham Menggunakan Model Lévy dan Model Black-Scholes
Abstrak: Stock may produce high profits. However, it has a high risk as well, because the stock prices fluctuate over time. Therefore, a model is required to estimate the future stock prices accurately. In this paper, Lévy model is compared to Black-Scholes model in estimating the stock price at Bank of America Corporation. As a result, it is concluded that the Black-Scholes model is more accurate than Lévy model.
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