Judul: Distribusi Kebisingan Pada Perahu Katir Penangkap Ikan Di Palabuhanratu, Sukabumi, Jawa Barat (Studi Kasus Pada Km Seuri Mulya 1)
Abstrak: KM Seuri Mulya 1 merupakan kapal penangkap ikan yang diklasifikasikan ke dalam golongan motor tempel di Indonesia. Tujuan penelitian ini adalah menentukan tingkat kebisingan di perahu katir, dan menentukan Nilai Ambang Batas (NAB) yang sesuai dengan Permenakertrans No.13/ MEN/X/2011 tentang NAB Faktor Fisika dan Faktor kimia di Tempat Kerja. Berdasarkan hasil penelitian, KM Seuri Mulya 1 memiliki sumber kebisingan berasal dari mesin motor yang menghasilkan kebisingan selama 11,5 jam. Nilai kisaran tingkat kebisingan di KM Seuri Mulya 1 adalah sebagai berikut: menuju ke fishing ground: 62,57–95,43 dB; setting: 52,53–80,67 dB, dan kembali ke fishing base: 65,50–98,33 dB. Kebisingan di kapal terjadi pada aktivitas menuju ke fishing ground, saat setting, dan saat kembali ke fishing base berasal pada posisi bagian belakang perahu.
Keyword: kebisingan, mesin, nilai ambang bat

Judul: Tingkat Kebisingan pada Kapal Penangkap Ikan (Studi kasus pada Modern Boat Liftnet KM Omega Jaya di Pulau Ampel Serang, Banten)
Abstrak: KM Omega Jaya is a fishing vessel which is classified as Modern Boat Liftnet. The purposes of this research were to identify the sources of noise on vessel in fishing gear, to describe the pattern of noise distribution on vessel, and to define TLV (Threshold Limit Values) comply with Kep-51/MEN/1999. The result showed that KM Omega Jaya had two sources of noise, main engine and generator which produced noise for four hours and six hours respectively. The average of noise level which was produced by main engine was 91,19 dB(A), while generator was 93,85 dB(A). The pattern of noise distribution from two sources showed that the noise was divided into six colour areas; red (98dB-106dB), orange (94dB-98dB), yellow (90dB-94dB), green (84dB-90dB), blue (74dB-84dB), and purple (70dB-74dB). The characteristic of noise pattern which was produced by two sources are similar. Based on Decree of the Minister of Labour No. Kep-51/MEN/1999, the recommended TLV for noise on KM Omega Jaya was 84,25 dB. However, there were only 10,34% (when the main engine turned on) and 9,9% (when the generator turned on) of deck area which had safe noise level.
Keyword: Engine, TLV, noise

Judul: Penggunaan Trie dalam Membangun Frequent ltemset Menggunakan Algoritmc FPGrowth
Abstrak: FP-growth algorithm search for frequent itemset using the FP-tree data structure which is a prefix tree structure based on pattern growth algorithm. Prefix tree in FP-Growth uses the trie structure in the relationship pattern among the items in the database. Trie is a tree structure that uses strings as key, where each descendant represents a character or prefix. To find frequent itemset, FP-growth algorithm build prefix tree recursively. However, recursive function may need longer time than the Iterative (Manolopoulos 2003). Goal of this research is to create alternatives iteratively to the development of frequent iternset using trie on the FP-Growth. Research was conducted on several stages for the development of the frequent itcmset using a trie, stage through pruning and without pruning. In the last stages of testing is done using the input parameters, enter the difference in support, the number of transactions, and the items involved. Testing stage compare the execution time in the computing process through the stage with pruning and without pruning. Thing that affects the execution time is the number of items involved in development process of the frequent itemset. Frequent itemset development with the pruning process will he faster than without pruning, hecause at the time to build a combination of frequent itemset, infrequent items are not in the development process.
Keyword: