Judul: Beberapa Faktor yang Memengaruhi Keberhasilan Penggabungan Dua Perusahaan
Abstrak: Perusahaan akan membayar dividen kepada para pemegang saham sedemikian rupa sehingga besarnya akumulasi total pembayaran dividen yang dihitung berdasarkan nilai sekarang sesuai harapan pemegang saham. Dividen akan dibayarkan berdasarkan strategi barier, artinya jika surplus perusahaan telah melebihi optimal barrier keuntungan perusahaan, maka kelebihan dari barrier keuntungan tersebut semuanya akan dibayarkan sebagai dividen kepada para pemegang saham. Pembayaran dividen akan terhenti bila perusahaan mengalami kebangkrutan. Jumlah pendapatan bersih yang dihasilkan oleh gabungan dua perusahaan dimodelkan dengan gerak Brown bivariat dengan parameter drift μ dan ragam per satuan waktu. Fungsi surplus merupakan turunan model gerak Brown dan dari fungsi surplus didapatkan hasil tentang potensi untung dan rugi pada penggabungan dua perusahaan. Jika optimal barrier perusahaan gabungan lebih kecil dari hasil penjumlahan optimal barrier setiap perusahaan, untuk nilai koefisien korelasi  sama dengan satu, dan hasil kali dari nilai tingkat bunga  dengan koefisien ragam dari proses agregat pendapatan bersih setiap perusahaan pada tingkat suku bunga kurang dari 6,87%, maka merger akan mendapatkan keuntungan.
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Judul: Memaksimumkan Nilai Harapan Kekayaan Investor dengan Strategi Investasi Saham Dua Perusahaan yang Bergabung
Abstrak: Stock is the most popular form of investment. Its price changes dynamically and randomly. It is assumed that the price moves according to Brownian motion. Investors can earn more profit when a company merges with another one. In case of a merger of two companies, there is a linear combination of two stock prices that change according to Brownian motion. The objective of this research is to determine the expected value of investor’s wealth with a certain strategy. The result is presented in a theorem, which describes the investment strategy according to the company’s stock return at certain time. It has been proved that the investor can have two possibilities, i.e. the investor does not invest in either companies, or the investor invest only in one company. The expected value of wealth will be maximum if the allocation of investment in both companies are maximum.
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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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