Judul: Performance Comparison Between Kimura 2-Parameters and Jukes-Cantor Model in Constructing Phylogenetic Tree of Neighbour Joining (NJ)
Abstrak: Bioinformatics as a recent improvement of knowledge has made an interest for scientist to collect and analyze data to provide the best estimate of the true phylogeny. The objective of this research is to construct and compare the phylogenetic tree of Neighbour Joining (NJ) based on different models (Kimura 2-Parameters and Jukes-Cantor) and to find out which model is more reliable on constructing NJ’s tree. In order to build the tree, reliable set of data is conducted from D-loop mtDNA sequences that is available in Gen Bank. The nucleotide sequences come from Bison bison (American bison), Bos taurus (European cow such as Shorthorn), Bos indicus (zebu breeds), Bos grunniens mutus (one of subspecies of cow), and Capra hircus (species of goat). The reliability of each models was measured using the Felsentein’s bootstrap method. The whole bootstrap process for each models was repeated 1.000, 5.000, and 10.000 times to detect its reliability. The performance was measured on the basis of the consistency of the topology relationship, the stability of nodes, the consistency of bootstrap confidence level (PB), standard error of distance, change of PB from (1.000-5.000) to (5.000-1.000), computational time, and BIC score. NJ’s phylogenetic tree with kimura 2-parameters and jukes cantor model have a good node stability and is also generally successful in representing topological relationships between taxa. The increasing of bootstrap replication number in common will increase the consistency of bootstrap confidence value ( . It means both models have a good reliability. But, when the number of sequences is large and the extent of sequence divergence is low, it is generally difficult to construct the tree by any models. In conclusion, Kimura 2-Parameters has a better performance than Jukes-Cantor.
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Judul: Molecular Phylogenetic Tree using Three Different Methods based on p-distance Model
Abstrak: Phylogenetic inference is needed in describing the relationship between proteins, genes or species. In phylogeny, the object is assumed to be evolutionary related. The evolutionary tree is used to show the evolutionary relationship among the organisms. However, to build reliable evolutionary tree, reliable set of data is needed to find the best model. In this paper, the data is obtained from D-loop region in mitochondrion DNA (mtDNA) that is available in Gen Bank. Five different species of animals were used, those were: Bison bison, Bos taurus, Bos indicus, Bubalus bubalis, and Capra hircus. The objective was to obtain the most reliable method, measured by its stability among UPGMA, Minimum Evolution, and Neighbor-Joining. To build the cases, five species were grouped into seven classes that have different characters. P-distance model was used to build the distance matrices. The reliability of each method was measured using the Felsentein’s bootstrap method. The whole bootstrap process for each method will be repeated 100, 1000, and 10000 times to detect its reliability. Almost all methods do not have the misclassified problems in reconstructing the evolutionary tree. However, Minimum Evolution failed to reconstruct a reliable evolutionary tree compared to UPGMA and Neighbor-Joining.
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Judul: Perempuan dan Resiliensi Nafkah Rumah Tangga Pedagang Pasar Terapung (Kasus : Pasar Terapung di Banjarmasin, Kalimantan Selatan)
Abstrak: Pasar terapung memiliki keunikan tersendiri dibandingkan dengan pasar lainnya, karena aktivitas jual-beli berlangsung di atas sungai menggunakan perahu. Perbedaan ukuran perahu yang dimiliki oleh pedagang laki-laki dan perempuan dapat menunjukkan kondisi perekonomian yang berbeda. Pemanfaatan modal nafkah rumah tangga dapat berbeda-beda sesuai dengan kemampuan masing-masing dalam memanfaatkannya. Berbagai sumber nafkah juga dimanfaatkan baik dari sektor perdagangan maupun non-perdagangan. Penelitian ini merupakan penelitian kuantitatif yang didukung dengan kualitatif. Teknik pengumpulan data melalui kuesioner untuk data kuantitatif dan wawancara mendalam untuk data kualitatif. Tujuan dari penelitian ini adalah untuk menganalisis struktur nafkah, mekanisme adaptasi nafkah, dan faktor-faktor yang mendukung tercapainya resiliensi nafkah rumah tangga pedagang pasar terapung laki-laki dan rumah tangga pedagang pasar terapung perempuan. Hasil penelitian ini menunjukkan bahwa pedagang pasar terapung perempuan menjadi pencari nafkah utama dalam rumah tangga. Selain itu, dengan segala keterbatasan yang perempuan miliki, kemampuan adaptasi mereka untuk mencapai resiliensi nafkah lebih baik dibandingkan pedagang laki-laki., Floating market is unique compared to other markets, because trading activity takes place on the river using boats. The difference in boat sizes owned by male and female traders can indicate different economic conditions. Utilization of household capital according to the ability of each to utilize it. Various sources of income are also utilized from both the trade and non-trade sectors. This research is a quantitative supported by qualitative method. Technique of collecting data is through questionnaires for quantitative and in-depth interviews for qualitative. The purpose of this study is to analyze the structure of income, livelihood adaptative mechanism, and the factors that support the achievement of household livelihood resilience of male and female floating market traders. The results of this study indicate that female floating market traders are the main breadwinners in the household. In addition, with all the limitations that women have, their adaptability to achieve livelihood resilience is better than that of male traders.
Keyword: household, livelihood resilience, traders