Judul: Efektivitas Biaya Pengelolaan Limbah Rumah Sakit X di Jakarta Selatan
Abstrak: X Hospital started the liquid waste management by built the liquid waste management installation (IPAL) with system of aerobic - anaerobic biofilter in 2006. While for the solid waste management, X Hospital collaborated with cleanliness services of South Jakarta and PT WASTEC. This research was about waste management assessing of X Hospital which analyzed from characteristic of waste management, people preference, IPAL efficiency, determination of Unit Daily Cost (UDC) and cost effectiveness of waste water management. People preference showed that waste management has already been well. The liquid waste efficiency has scored more than 80 percent from all parameter and declared to be efficient. The efficiency examination with t-test showed that IPAL could reduce waste concentration significantly. UDC value received was Rp. 3.569,51. The most effective reducing cost was reducing cost from COD parameter. Meanwhile, the cost effectiveness ratio on waste treatment with activated sludge bioreactor system has more effective than cost effectiveness ratio on waste treatment with anaerob-aerob biofilter system.
Keyword: cost effectiveness, efficiency of waste treatment, hospital waste management

Judul: IPB (Bogor Agricultural University)
Abstrak: Rumah sakit kelas A, B, C dan D menghasilkan limbah yang sebelum dibuang, terlebih dahulu diolah dalam IPAL. Penelitian nini bertujuan untuk mempelajari efektivitas pengolahan limbah cair rumah sakit, khususnya di DKI Jakarta. Secara rinci bertujuan untuk (1) mengetahui efektivitas IPAL, (2) mengkaji parameter limbah yang penting untuk dipantau di masa mendatang, (3) mennganalisis hubungan kinerja rumah sakit dalam penanganan limbah cair rumah sakit dengan kualitas limbah cair rumah sakit, dan (4) efektivitas biaya pengolahan.
Keyword: Hospital liquid waste processing unit, Strategi pengelolaan limbah, Teknologi pengolahan limbah, Landasan hukum limbah rumah sakit, Uji korelasi spearman rank

Judul: Pengembangan Model Codebook untuk Identifikasi Chord Gitar
Abstrak: Acoustic guitar can produce sound waves with different types of tones. High-low tone is determined by the fundamental frequency of the sound wave. Human sense of hearing can distinguish high-and low tones, but can not know for sure what kind of tone is heard by him. This study developed a guitar chord recognition system. This study uses MFCC as feature extraction methods and the codebook as pattern recognition method for identification of the guitar chord. Cluster technique used in this study is the K-means clustering. Data obtained from MFCC are clustered using the K-Means method, and the model for classification is constructed using the codebook method. The parameters used in MFCC is the number of cepstral coefficients, overlap, and the time frame, while an important parameter in the K-Means is the number of clusters. This study uses 8640 guitar chord sounds from 24 classes. Each of the data is made up of two chords which will be tested. Simulation results show that the maximum accuracy obtained is 98.89% obtained on 26 cepstral coefficients, overlap 0.4, time frame is 30 ms, on 100 clusters.
Keyword: chord, codebook, k-means, mel frequency cepstral coefficients (MFCC)