Judul: Kehilangan air tanah (soil moisture loss) di hutan jati (tectona grandis L.f) studi kasus di RPH Bondo,BKPH Kluma,KPH Pati,Perum .Perhutani Unit I Jawa Tengah
Abstrak: Kehilangan air tanah yang merupakan salah satu komponen penting dalam siklus hidrologi adalah suatu proses hilangnya air tanah melalui peresapan, pengaliran dan penguapan. Kehilangan air tanah tersebut perlu untuk diketahui sebagai bahan pertimbangan dalam pengaturan tata air suatu kawasan. Obyek penelitian ini adalah tegakan jati karena jati merupakan salah satu jenis tanaman yang masih diusahakan secara luas di P. Jawa sehingga sedikit banyak akan mempengaruhi siklus hidrologi P. Jawa. Penelitian ini bertujuan untuk mengetahui jumlah air tanah yang hilang dari tegakan jati yang berumur 1 th, 9 th dan 33 th. Adapun hipotesis dalam penelitian ini adalah bahwa umur tegakan berpengaruh terhadap kehilangan air tanah di tegakan tersebut yaitu semakin muda umur tegakan maka kehilangan air tanahnya semakin besar.
Keyword: jati, kadar air tanah

Judul: Laju Infiltrasi Tanah Pada Tegakan Jati (Tectona Grandis Linn F) Di BKPH Subah KPH Kendal Unit I Jawa Tengah
Abstrak: Infiltration is the movement of water through the soil. These is one of hidrologycal cycles. Infiltrate which annoyed at one area will influence the cycle hidrology on that area. So, management of soil is important to keep the equilibrium of the cycles. Beside that, it is important to use as plant which will give forest productivity. Forest productivity can be conducted with ground quality and availibility of ground water through infiltrateing. Soil phisic is a number of factors impact soil infiltration. They are, bulk density, porosity, permeability, soil water content, ect. Infiltration measured by double ring infiltrometer and soil sample have taken by method not disturbed. Then, soil sample were collected analysed on soil Laboratory of Agriculture Faculty. Regretion have made between soil phisic and infiltration. Regretion also have made between infiltration and stand density. Result showed that infiltration have strong relation with soil phisic. But, infiltration does not have relation with stand density. Infiltration also influences by organic matter, tillage, open cwron, temperature and topography.
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Judul: Paralellization Multiple Sequence Alignment
Abstrak: Sequence alignment (sequence alignment) is one of the problems in molecular biology that can be solved with the help of computer programs. The purpose of an alignment is to identify similarity region of sequence in Deoxyribonucleic acid (DNA), Ribonucleic acid (RNA), or protein. One of sequence alignment methods is Needleman-Wunsch which includes all sequences in its alignment. The Needleman-Wunsch method has high computational complexity with value of O(n2). Similarly, multiple sequence alignment (MSA) that processes k sequences one by one by using Star Alignment method has complexity of O(k2n2). Therefore, the main problem in MSA using Star Alignment method is computational time. However, the Star Alignment method can still obtain high accuracy. The time consuming problem faced by Star Alignment method can be solved by applying parallel computing technique implemented using multiple computers working together as a network system. This research focuses on finding a faster method to process MSA based on Star Alignment method using parallel computing. The proposed method is implemented using Message Passing Interface (MPI). The evaluation is conducted by calculating speed up. The experiment results show that the paralellization of the Star Alignment method can increase speed up 4-6 times faster than that of using single CPU.
Keyword: Needleman-Wunsch, Multiple Sequence Alignment, Star Alignment, Parallel Computing