Judul: Perbandingan teknik watermarking berbasis SVD, DCT-SVD, dan SVD-DCT pada video digital
Abstrak: With the advantages of digital video processing, digital video can be manipulated and distributed illegally by irresponsible parties. Such actions are detrimental to owners of digital video and violate the copyright of the digital video. One solution to overcome this problem is to apply the watermarking technique in digital video. Watermarking techniques can be performed in spatial domain, frequency domain and hybrid domain. In the spatial domain, one of the watermarking techniques can be performed using Singular Value Decomposition (SVD) as proposed by Liu-Tan. In the frequency domain, one of the watermarking techniques can be performed using Discrete Cosine Transform (DCT). In the hybrid domain, one of the watermarking technique can be done by combining SVD with DCT. In this paper, the author tries to apply the watermarking technique proposed by Liu-Tan on digital video in spatial domain and hybrid domain. There are two methods in the domain of hybrid that will be proposed, namely the transformation of DCT-SVD and SVD-DCT transformation. Three watermarking technique compared based on the PSNR value of the insertion, insertion time, the correlation value from extraction, extraction time, and the robustness. Attacks carried out in this study is the attack noise, filtering attack, attack rotations, and cropping attacks. The results showed that the watermarking technique proposed by Liu-Tan is applied to the hybrid domain would increase the value of PSNR and correlation values, but vulnerable to some attacks. In the hybrid domain, the transformation of SVD-DCT is better than DCT-SVD transformation.
Keyword: Watermarking, Digital video, SVD Transform, DCT Transform, Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Implementasi Audio Watermarking Menggunakan Metode DWT-SVD dengan Teks sebagai Watermark
Abstrak: The growth of data and network communication technologies has made digital data, such as audio, easier to be distributed illegally. Therefore, copyright protection becomes an important issue. Digital audio watermarking has been proposed as one of the possible solutions. It is a process of information insertion and extraction to and from an audio file without influencing the audio quality. Digital audio watermarking has been developed in several domains, such as time domain, frequency domain, and spatial domain. In this research, the audio watermarking has been implemented using DWT-SVD method that combines the frequency and spatial domain. This method works by combining the virtue of mathematical transform: the discrete wavelet transform (DWT) and singular value decomposition (SVD). Perceptibility and robustness of this method were analyzed using variance of watermark intensity and several attacks. It was found that the watermarked audio has good perceptibility at low watermark intensity of 0.1 to 0.3. Furthermore, the watermarked audio was found to be robust to some attacks namely amplify, invert, low pass filtering, high pass filtering, and resampling attacks at higher watermark intensity. Thus, this research proved the trade-off between perceptibility and robustness in digital audio watermarking.
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Judul: Koksidiosis Pada Usus Halus Kelinci Yang Disebabkan Oleh Eimeria magna
Abstrak: Penyakit yang disebabkan oleh infeksi protozoa dari genus Eimeria pada usus halus kelinci, disebut kok- sidiosis usus (Intestinal Coccidiosis). Salah satu jenis coccidia penyebabnya adalah E. magna. E. magna ini adalah parasit intraseluler, yang menyerang usus halus kelinci terutama bagian jejunum dan ileum. Dalam siklus hidupnya E. magna mengalami tiga tahap perkembangan, yaitu: 1. Skizogoni. Pada tahap ini terjadi pembentukan skizon, ukurannya berkisar antara 10-20 น. 2. Gametogoni. Pada tahap ini terjadi perkembangan seksual, terjadi lima hari setelah infeksi. 3. Sporogoni. Pada tahap ini terjadi pembentukan spora, bentuk ini dapat menginfeksi kelinci lainnya. Ookista yang bersporulasi dapat menginfeksi kelinci dalam suatu peternakan. Ookista ini berbentuk oval kadang kadang elips, panjangnya 28-42 u dan lebarnya 20-26 u. Apabila kelinci terinfeksi oleh ookista ini, dapat menurunkan berat badan terus menerus dan akhirnya menimbulkan kematian. Kelinci yang berumur muda lebih sering terserang penyakit ini dari pada kelinci dewasa, sehingga sering menyebabkan kerugian pada peternak. Gejala klinis yang terlihat tergantung dari banyaknya jumlah ookista yang termakan oleh kelinci. Kelinci muda sering terinfeksi oleh sejumlah besar ookista yang dapat menyebabkan kematian mendadak tanpa memperlihatkan gejala klinis terlebih dahulu. Pada infeksi akut terlihat gejala-gejala penurunan berat badan, dehidrasi, banyak minum, diare yang hebat dan sering menimbulkan kematian. ...
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