Judul: Pendugaan Parameter Fungsi Intensitas Proses Poisson Non- Homogen pada Pencemaran Gas Ozon di Kota Jakarta
Abstrak: Non-homogeneous Poisson process can be applied in various fields. One of them is modeling ozone gas pollution in the city of Jakarta. Amount of ozone gas is assumed to follow the model of the non-homogeneous Poisson process. Intensity functions for Poisson process used are Weibull distribution, Musa Okumoto distribution, Goel Okumoto distribution and Goel Okumoto General distribution. Estimation of model parameter uses Bayesian method via Markov chain Monte Carlo method. The best model is chosen by using the deviance information criterion (DIC) and graphical approach. Based on the distribution used, Goel Okumoto General distribution is the best model for Jakarta city, because it has the smallest DIC value and it has estimation of expected value which is closed to the plot of the actual accumulation of ozone gas.
Keyword: air pollution, Bayesian method, non-homogeneous Poisson process

Judul: Fenomena Long Range Transport pada Dispersi Ozon dan NOx di Wilayah Bogor
Abstrak: Kepadatan lalu lintas di wilayah Bogor sebagai daerah wisata dan penyangga Ibu Kota Jakarta cukup tinggi. Hal ini berpotensi menyebabkan peningkatan emisi NOx ke udara dan mendorong pembentukan ozon di permukaan, sehingga dapat menurunkan kualitas udara ambien. Salah satu parameter meteorologi yaitu angin, memengaruhi dispersi pencemar. Penelitian ini bertujuan untuk menganalisis dispersi ozon dan NOx di wilayah Bogor serta fenomena long range transport. Data yang digunakan adalah data observasi dari BMKG Citeko dan CCROM-SEAP IPB Baranangsiang. Hasil analisis menunjukkan konsentrasi ozon lebih tinggi di Citeko, sedangkan prekursornya (NOx) lebih tinggi di Baranangsiang. Fluktuasi diurnal ozon di Baranangsiang lebih tinggi daripada Citeko. Pola angin lokal yang dipengaruhi oleh keberadaan Gunung Salak dan Gunung Gede Pangrango memengaruhi dispersi antara kedua lokasi tersebut. Berdasarkan pemodelan WRF Chem terjadi pergerakan massa udara (pola angin) dari utara (Jakarta dan Bekasi) ke arah selatan (Citeko) yang diikuti oleh tingginya konsentrasi ozon di wilayah Citeko. Hal ini mendukung terjadinya fenomena long range transport.
Keyword: angin, long range transport, NOx, ozon, WRF Chem

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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