Judul: Pengaruh Pupuk Kandang, Zeolit, dan Skim Lateks Terhadap Berbagai Sifat Fisik Tanah Latosol Darmaga
Abstrak: Latosol Darmaga formed in areas with precipitation more than 3000 mm/year and high temperatures which can result in soil erosion by the raindrop impacts that can damage the soil physical properties. Therefore, the action needs to be done that can improve the physical properties of soil. Improving the physical properties of soil can be done with the addition of manure, zeolites, and skim latex. The purpose of this research is to study the influence of the addition manure, the mineral zeolite, skim latex, and there combinations to changes some soil physical properties of Latosol Darmaga and corn production. Research conducted at the Cikabayan garden and Soil and Water Conservation Laboratory since February 2007 until August 2007. The treatment given is A (control), B (manure), C (zeolite), D (manure + zeolite), E (manure + skim latex), F (zeolite + skim latex), and G (manure+zeolit + skim latex). The dose given was 4.5 kg / plot. The results showed that bulk density after the manure, zeolites, skim latex and there combination showed an increase, aggregate stability of treatments G (manure + zeolite + skim latex) significantly more stable compared with treatment A (control), B (manure) , C (zeolite), D (manure + zeolite), E (manure + skim latex), and F (zeolite + skim latex) in the amount of 58.83. Fast drainage pores in treatment B (manure) more high significantly than A (control) and treatment D (manure + zeolite). The addition of manure, zeolites, skim latex and there combination tends to increase the number of slow drainage pores, available water pores and the mean weight diameter (MWD) of 4.76 mm, while the mean weight diameter (MWD) 2.83 mm was decreased. From this research, suggested that addition soil conditioner to the good soil physical properties need to be done in order to conserve the land to avoid degradation.
Keyword: 

Judul: Aplikasi Bahan Humat dengan Carrier Zeolit untuk Meningkatkan Produksi Tanaman Jagung (Zea mays) pada Latosol Bogor.
Abstrak: Indonesia is one of wet-tropical countries having high temperature and rainfall so that leaching in soil is very intensive. This condition makes nutritions in the soil decrease significantly and declining crop production. Many efforts have been done for increasing food crop production without damaging soil characteristics and causing environmental pollution such as application of chemical fertilizer with accurate dossage accompanied by addition of organic fertilizer. However, soil need organic fertilizer in large amount for improving soil characteristics and increase food crop production. Humic substance which is extracted from organic matter can substitute organic fertilizer. Generally, humic substance is applied in liquid form with a small amount, therefore it need a carrier to make the application easy and the humic substance is not easily leached. Zeolite that has porous structure is material potential to be used as carrier of humic substance. Application of humic substance with zeolite as carrier is expected to increase production of food crop such as corn. This experiment consists of field experiment that was conducted in agricultural land at Sindangbarang District, Bogor City, green house experiment that was conducted in University Farm IPB, and soil and plant analysis in chemist and soil fertility, Laboratory of the Department of Soil Science and Land Resources, Faculty of Agriculture, Bogor Agricultural University. Field experiment is arranged in a randomized block design 2 factorial with 2 replications. Treatment is consist of 1 control, 3 humic substance treatment (A5, A10, and A15), 2 zeolite treatment (Z10, and Z20), and 6 combination humic substance and zeolite treatment (A5Z10, A10Z10, A15Z10, A5Z20, A10Z20, and A15Z20). The results showed that application of humic substance with zeolite as carrier gave a better effect for increasing corn production than application of humic substance or zeolite itself. Humic substance with zeolite as carrier can increase P-available and CEC of soil. Moreover, humic substance with zeolite as carrier increased nitrogen level in corn leaf. The growth of corn increased with the increase of root weight and plant height. The optimum and profitable dosage of humic substance with zeolite as carrier was 10 liters humic substance/ha with 20 kg zeolite as carrier/liter humic substance because it showed the biggest increase corn production or 19% increase than plants without application of humic substance with zeolite as carrier and gave profit up to Rp 1.212.000,00/ha per planting season. This dosage can be recommend by farmer.
Keyword: 

Judul: Implementasi Pengenalan Suara dalam Pencarian Ayat-Ayat al-Quran Menggunakan MFCC dan Codebook
Abstrak: Pencarian teks ayat-ayat al-Quran tidaklah mudah dikarenakan dibutuhkan keahlian khusus dalam pengetahuan bahasa Arab. Oleh karena itu, dibuatlah sebuah sistem pencarian teks ayat-ayat al-Quran dengan bantuan transkripsi suara agar mempermudah pencarian ayat-ayat al-Quran. Dengan menggunakan MFCC sebagai ekstraksi ciri, suara diubah menjadi sebuah data vektor yang dapat dicirikan dan dijadikan sebuah codebook. Penelitian ini bertujuan untuk mengimplementasikan pengenalan suara ke dalam sebuah sistem pencarian teks al-Quran. Terdapat 4 potongan ayat Al-Quran yang akan diidentifikasi ke dalam ayat-ayat yang mengandung potongan ayat terebut. Penelitian ini berhasil menghasilkan sebuah sistem yang dapat mendeteksi potongan ayat al-Quran pada sebuah ayat dengan akurasi sebesar 85%
Keyword: al-Quran, codebook, K-means clustering, MFCC, transkripsi suara