Judul: Analisis Perbandingan Kandungan Serat Pangan Daun Kolesom (Talinum triangulare (Jacq.) Willd) dengan Pemupukan Organik dan Anorganik pada Perbedaan Musim
Abstrak: Waterleaf (Talinum triangulare (Jacq.) Willd) is one of tropical plant and has long been used as herbs and vegetable in daily menu. Its leaves are fleshy and sticky, presumably due to the high pectin content. Pectin is soluble dietary fiber component that performs ability to reduce cholesterol and LDL level in blood. The aim of this research was to study the effect of organic and inorganic fertilization as well as the cultivating season to the level of TDF, IDF, SDF and pectic substance in waterleaf. The research was conducted in five steps, i.e. cultivation, sample preparation, chemical analysis, data analysis, and meta analysis. The samples were ten waterleaf cultivated in dry season with organic and inorganic fertilizations, each in five different concentration of fertilizers. The TDF, IDF, SDF, and pectic substance in waterleaf cultivated with organic fertilizer were 40.52 2.72; 27.12 1.54; 13.40 1.68; and 6.58 0.74 g/100 dry basis respectively, while in waterleaf with inorganic fertilizer were 42.57 1.84; 27.12 0.75; 15.41 1.85; and 6.01 0.35 g/100 g dry basis respectively. All parameters, except IDF, were significantly different (p < 0.05). The meta analysis showed that the dry season waterleaf contain less TDF and IDF, and more SDF and pectic substance than the wet season waterleaf do (p < 0.01). The SDF and pectic substance content of the dry season waterleaf are relatively higher compared to other vegetables. It indicates that waterleaf is potential to be developed as functional food for lowering cholesterol and LDL level in blood.
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Judul: Profil Gula Sederhana dan Oligosakarida Daun Kolesom (Talinum triangulare (Jacq.) Willd) Hasil Pemupukan Organik pada Musim Hujan.
Abstrak: Waterleaf (Talinum triangulare (Jacq.) Willd) is one of tropical plant and has long been used as herbs and vegetables. It contains pectin which is soluble dietary fiber component and performs ability to reduce cholesterol and LDL level in blood. The aim of this research was to study the effect of organic fertilization results on mono- and oligosaccharides profile of waterleaf at wet season. The organic fertilizers were cow manure (CM), rock phosphate (RP), and rice-hull ash (HA). There were four combination of treatment: RP+HA, CM+HA, CM+RP, and CM+RP+HA, also control (no-fertilizer). The result of this research shows that the highest monosaccharides was the waterleaf of control (1025.79 mg/100 g dry basis); the highest oligosaccharides was the waterleaf of CM+RP+HA fertilization (87.61 mg/100 g dry basis); and the highest total carbohydrates was the waterleaf of no-fertilization (1365.20 mg/100 g dry basis). The organic fertilization did not significantly affect the mono-, oligosaccharides, and total carbohydrates in waterleaf (p>0.05).
Keyword: Talinum triangulare (Jacq.) Willd, stachyose, raffinose, organic fertilizers

Judul: Estimating Parameter and the Convergence of Parameter Estimator of Poisson Hidden Markov Model
Abstrak: Model hidden Markov terdiri dari sepasang proses stokastik yaitu proses observasi dan proses yang memengaruhi observasi. Proses stokastik yang memengaruhi observasi ini diasumsikan membentuk rantai Markov dan tidak diamati. Model Poisson hidden Markov (MPHM) adalah salah satu model hidden Markov diskret dan proses observasinya jika diketahui proses yang memengaruhinya diasumsikan menyebar Poisson., A hidden Markov model (HMM) consists of a pair of stochastic processes, that is the observation process and process that affected observation. The stochastic process which causes this observation is assumed to form a Markov chain and is not observed. Poisson hidden Markov models (PHMM) is one of the discrete HMM and the observation process given the cause is assumed having a Poisson distribution.
Keyword: Poisson hidden Markov model, Forward-Backward algorithm, Expectation Maximization algorithm