Judul: Analisis Total Factor Productivity (Tfp) Tanaman Perkebunan Di Indonesia Periode 1990-2010
Abstrak: Tujuan penelitian ini adalah untuk menganalis Total Factor Productivity (TFP) tanaman perkebunan di Indonesia periode 1990-2010 dengan menggunakan Indeks Tornqvist-Theil. Selain itu untuk melihat pengaruh input produksi terhadap output produksi tanaman perkebunan di Indonesia, metode yang digunakan adalah OLS (Ordinary Least Square) dengan model fungsi Cobb-Douglass. Hasil penelitian menunjukan bahwa Indeks TFP pada tanaman perkebunan di Indonesia periode 1990-2010 bernilai positif. Hal ini menandakan bahwa penggunaan input dan output dapat dihasilkan secara maksimal. Hasil estimasi dari fungsi Cobb- Douglass untuk melihat pengaruh input terhadap output produksi menunjukan bahwa seluruh penggunaan input seperti kapital, tenaga kerja, dan luas panen berpengaruh secara positif dan signifikan terhadap output produksi.
Keyword: Indeks Tornqvist-Theil, Tanaman perkebunan Indonesia, Total Factor Productivity.

Judul: Analisis Faktor-Faktor yang Memengaruhi Pertumbuhan Total Factor Productivity (TFP) Sektor Pertanian di Indonesia
Abstrak: The agricultural sector is a sector which is crucial and has an important role for people life. Enhancement in agricultural productivity is the focus of the current Government. Previous research shows that the growth of agricultural output was not only influenced by the capital and labor but there is another factor called Total Factor Productivity (TFP). This research focuses on the factors that affect TFP growth of the agricultural sector in Indonesia in the period 1980-2011. This research using Cobb-Douglas linearization to calculate TFP value. Error Correction Model (ECM) used to analyze factors that affect agricultural TFP. Independent variables used in this model are irrigation, inflation rate, level of education, agricultural credit, and trade openness, while the dependent variable used is agricultural TFP. The results of this research indicate that the variables that affect agricultural TFP in the short-term are education and level of trade openness. Variables that affect agricultural TFP on long term are the level of education, agricultural credit, and trade openness.
Keyword: 

Judul: Studi Taksonomi Katak Subgenus Papurana (Lesson, 1831) dari Halmahera (Anura, Ranidae, Hylarana), Studi Taksonomi Katak Subgenus Papurana (Lesson, 1831) dari Halmahera (Anura, Ranidae, Hylarana
Abstrak: I reevaluated taxonomic of subgenus Papurana position from Halmahera based on morphological and molecular analyses. My results show that two separate species occur on the Halmahera Island, each nested within two distinct clades (hereafter papua clade and celebensis clade), one of which corresponds to H. moluccana (celebensis clade) and the other to an unidentified species (papua clade). By p-distance ranging from 6.9 to 11.5% on the 16S rRNA gene, the unidentified species (Hylarana sp.) is genetically different from all congeners of the papua clade. The Hylarana sp. can be distinguished from all congeners by following combination of charactes: vomer teeth in two oblique rows with narrow inter-vomer distance; snout rounded dorsally; dorsum with few scattered cone-shaped tubercles that are black with white tips; distinct skin folds (ridges) on the dorsal side of the thigh coinciding with dark brown cross bars; a marbled pattern on the ventral side of the thigh and yellowish groin. I also present new data for H. daemeli, H. volkerjane, and H. arfaki from the western region of Papua. Furthermore, I found that H. celebensis has numerous mtDNA lineages, indicating cryptic diversity within the celebensis clade. The discovery of two separate species on Halmahera necessitates more research into the biogeographic history of Hylarana in Northern Moluccas.
Keyword: frog, Halmahera, Hylarana, morphology, Papurana, phylogenetic