Judul: Determination Of The Optimum Shooting Conditions In Estimating Paddy Leaf Color Level By Using a Handphone Cameras
Abstrak: Leaf color is an indicator that can be used to predict paddy fertilizer need. Handphone cameras can be used to measure the leaf color replacing the function of leaf color chart as the handphone technology has spread to farmer level. This research continues the previous research that still has low accuracy. The objective of the research is to determine the optimum shooting conditions in the estimation of paddy leaf color level using a handphone cameras. Rice leaf is slipped between user's finger on his/her palm, and the image is taken under body shadow. This image is then processed to get the RGB (red, green, blue) color components and then formulated with KNN to determine the color level. The KNN formulation was for every mobile phone type. It was found that the accuracy is affected by light intensity and the full fillment image frame. The best accuracy was found at 800-5000 lux light intensity and with a full frame image palms. The best accuracy was found to best shooting conditions with a image frame full of palm skin image at low light intensity, Samsung Ace was 87%, Sony Ericsson SK 17i was 93%, LG P698 was 91%, Samsung GT was 90%, Nexian was 93%.
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Judul: Penentuan Tingkat Warna Daun dan Kandungan  Klorofil Daun Jagung (Zea mays l.) Menggunakan Telepon Seluler
Abstrak: This study aimed at designing a method to determine color level of corn leaf and to estimate chlorophyll content using mobile phone cameras. In this research, two kinds of color references were used: 2 colored ribbon and the national ID card. The image of the leaf and color references are captured with handphone camera, and then the R, G, B, grey scale color components are extracted. Furthermore different of the leaf color grey scale and color component grey scale are used to determine the color level of the leaf. The leaf samples are also measured with SPAD chlorophyll meter to determine the chlorophyll content. The accuracy of leaf color prediction with 2 colored ribbon references under field illuminance were 72.45% for sweet corn and 78.12% for hybrid corn, while the accuracy under controlled illuminance 1500 lux were 92.69%. With national ID card references the accuracy were 81.48% for sweet corn and 76.82% for hybrid corn under field illuminance, while measuring under controlled illuminance 1500 lux were 94.45%. The accuracy of chlorophyll prediction was very low: R2 = 0.4317 with 2 colored ribbon references and R2= 0.4762 with national ID card references for sweet corn, and then R2 = 0.4355 with 2 colored ribbon references and R2= 0.5284 with national ID card references for hybrid corn. This is caused by the relation of manual color level measured also showed a low correlation with chlorophyll content (R2 = 0.8466 for sweet corn and R2 = 0.8506 for hybrid corn).
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Judul: Tuberkulosis pada satwa primata
Abstrak: Penyakit tuberkulosis pada satwa primata disebabkan oleh bakteri Mycobacterium yaitu Mycobacterium tuberculosis, Mycobacterium bovis, dan Mycobacterium avium, yang masing-masing menyebabkan tuberkulosis tipe human, bovin dan avian. Dari ketiga tipe tersebut, tuberkulosis tipe human adalah yang paling banyak ditemukan pada satwa primata. Ketiga tipe ini dapat dibedakan dengan melihat sifat-sifat bakteri pada pupukan dan virulensinya pada beberapa hewan percobaan. Kepekaan beberapa golongan satwa primata terhadap tuberkulosis berbeda satu dengan lainnya. Tuberkulosis tipe human dapat mengakibatkan kasus penyakit yang sangat fatal pada grup "Old World Monkey ", sedangkan "New World Monkey " tampak lebih resisten dan grup Prosimian jarang terkena tuberkulosis. Kasus tuberkulosis belum pernah ditemui pada koloni satwa primata yang hidup di hutan dan jauh dari pemukiman manusia. Tampaknya penularan yang terjadi pada satwa primata didapatkan dari kontak dengan manusia. Penularan tuberkulosis ini terutama adalah melalui inhalasi, kontak langsung, infeksi silang dari hewan-hewan jenis lain, juga dari peralatan yang terkontaminasi misalkan termometer rektal, tatoo, masker pembius dan tempat makanan. ..
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