Judul: Preferensi dan Efek Parasit Glochidia Kerang Philsbryconcha exilis terhadap Status Kesehatan dan Kinerja Pertumbuhan Ikan Inang
Abstrak: Parasit merupakan organisme yang hidup pada tubuh organisme lain (inang) dan umumnya menimbulkan efek negatif pada organisme yang ditempatinya. Dalam siklus hidupnya, kerang (P. exilis) pada stadia larva atau glochidia kerang bersifat parasit pada beberapa jenis ikan air tawar. sehingga perlu diketahui pengaruh keberadaan larva kerang air tawar terhadap kesehatan ikan yang dibudidayakan. Tujuan penelitian ini adalah untuk menguji preferensinya dalam memilih inang ikan budidaya, serta pengaruhnya secara umum terhadap status kesehatan dan kinerja pertumbuhan ikanbudidaya yang menjadi inang. Metode penelitian dilakukan dengan penambahan larva glochidia P.exilis kerang air tawar pada beberapa jenis ikan budidaya menggunakan rancangan perlakuan acak lengkap yang terdiri dari dua perlakuan dan tiga kali ulangan. Hasil penelitian menunjukan tingkat prevalensi, intensitas, dan encystment parasit glochidia P.exilis paling besar di antara ketiga jenis inang yang digunakan adalah ikan mas. Glochidia P.exilis mempengaruhi dinamika sistem imunitas non spesifik pada ikan selama periode penempelan parasit. Penempelan glochidia P.exilis mempengaruhi pertumbuhan ikan mas, namun tidak pada ikan lele maupun nila.
Keyword: Fish, Glochidia, Host, Parasite, Philsbryonconcha exilis

Judul: Preferensi Pemilihan Inang oleh Parasit Argulus sp. serta Pengaruhnya terhadap Kondisi Fisiologis Ikan
Abstrak: Argulus sp. is one of non-specific fish parasite, which can infect various species of fishes. Although, it still unknown whether there is any preference of fish species it liked. This experiment purposed to determine the preference of Argulus sp. in infecting five different species of fishes and its effect to the infected fish phisiology. Five different species of fishes including the family of Common carp, Giant gourami, Tilapia, Pangasius catfish and Walking catfish were infected by 150 Argulus sp. The result shows 100% of prevelence with the intensity of each parasite 55, 46, 20, 16, and 13. Common carp and Tilapia which infected by the intensity number of 10 Argulus sp. showed the reducing of body weight in 14 days. The number of Hematocrite and Hemoglobine of both fishes also decreased, but the number of white blood cell was increased.
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Judul: Identifikasi campuran nada pada suara piano menggunakan codebook
Abstrak: It has been identified blend of tones, either as a single tone or a mix tones using the mel-frequency cepstrum coefficients (MFCC) as feature extraction and modeling of codebook for pattern recognition. The voices which used are the sound of piano and identified as 12 single-tones and 66 mix of tones recorded with 11 kHz on the duration of 1 second. The making of codebook is applied step by step, that is the codebook with the blend and the codebook of tones (single and mixed tones) which was developed using clustering techniques. The results of research showed that the optimum number of codewords is 20 with width of frames is 256 data, with an accuracy is 98.2%. However, there are some tones which are difficult to be identified, they are CC#, CD, CF, and A#B which has accuracy of each below 50%. For C# tone is more often recognized as C#D# tone, for the CC# tone is more often identified as C tone, for CD tone is more often recognized as C# tone, the CF tone is more often identified as C# tone and CF# tone, while for the A#B tone is more often identified with A# tone. Some errors happen in this recognition because those tones have similiar signal pattern so that they have the vector points which adjacent to each other.
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