Judul: Pengendalian suhu pada ruang pengering menggunakan PC LabCard 812-PG dengan logika fuzzy berbasis PC / AT
Abstrak: Sejak diperkenalkannya logika fuzzy oleh Lotfi. A. Zadeh, pengunaan logika fuzzy pada perancangan dan implimentasi sistem pengendalian merupakan bidang aplikasi yang sangat aktif. Dibandingkan dengan logika klasik, logika fuzzy lebih dekat / mirip dengan cara pengambilan keputusan manusia dan bahasa alami. Pada pengendali fuzzy (fuzzy controller), pengendalian ini dilakukan oleh sistim pakar berbasis fuzzy (fuzzy rule-based expert system), sebuah model dari proses berpikir secara logik yang mirip dengan cara manusia mengambil keputusan. Tujuan dari penelitian ini adalah mempelajari metode pengukuran dan pengendalian suhu dalam ruang pengering, melakukan pemrograman pengendalian suhu dengan komputer, dan mengaplikasikan teknik kontrol fuzzy logic pada pengendalian suhu ruang pengering. ...
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Judul: Pengontrolan Suhu dalam Ruang Pengeringan dengan Sistem Kontrol Fuzzy
Abstrak: Suhu dan kelembaban udara (RH) merupakan salah satu karakter fisik yang dapat mempengaruhi kualitas bahan-bahan hasil pertanian selama proses pasca panen. Pengeringan merupakan proses pasca panen yang dapat dilakukan di dalam rumah kaca, untuk menanggulangi perubahan suhu dan RH yang tidak diharapkan di dalam ruang pengering rumah kaca maka dilakukan pengendalian suhu dengan menggunakan kontrollogika fuzzy. Untuk membuat sistem pengendalian suhu dengan kontrol logika fuzzy ini menggunakan komputer, interface PCL-812PG, rangkaian aktuator, elemen pemanas, rangkaian sensor dengan sensor suhu dari diode IN4148 dan catu daya yang merupakan perangkat keras, sedangkan perangkat lunaknya berupa program pengontrolan dengan bahasa Turbo Pascal.
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Judul: Studies on growth spurt and aging in higher primates
Abstrak: single measurement that best defines the health and nutritional status of children, just as it provides an indirect measurement of the quality of life of an entire population. The pattern of human growth reflects the biocultural evolution of our species. The human pattern of growth and development (ontogeny) appears to differ markedly from patterns of ontogeny in other primate species. Three studies are reported here which deal to the growth and development of human and chimpanzee (Pan troglodytes). These three studies allow us to contrast the phenomena of adolescence growth spurt and female elderly bone loss in chimpanzee and human as chimpanzee is the closest species to humans within extant nonhuman primates. In the first, a cross-sectional study of growth of the body size and somatotype of 363 Javanese girls and 299 Javanese boys aged 4 to 20 years from Magelang Regency, Indonesia was described. In the second, cross-sectional and longitudinal studies in the growth of chimpanzee second metacarpal bone linear dimensions from individuals aged 0 to 43.6 years were used for comparison. While in the third, cross-sectional and longitudinal studies in the growth of chimpanzee body size (body mass and anterior trunk length) and second metacarpal bone mineral content were derived. In measuring the second metacarpal dimensions and mineral content, a total of 568 radiographs of chimpanzee's proximodistal left hands were used. They were taken from 68 females and 49 males aged 0 to 43.62 years old. We applied an image analysis system, Scion Image Release Alpha 4.0.3.2 software for Windows to measure bone linear dimensions and bone mineral content. Humans present complex and sinuous growth curves for both body weight and height. A clear growth spurt could be demonstrated by cross-sectional analysis in our girl subjects at around aged 11.5 years and in our boy subjects at around aged 12.5 years. In longitudinal series, not in cross-sectional, several representative chimpanzees of both sexes showed a pre-adult growth spurt on the body sizes, bone dimensions and bone mineral content. They ranged at age 4.5 to 8.5 years. This underscore the fact that adolescent growth spurt in linear dimension was not a universal feature of anthropoid primate ontogeny. Bone loss is a well established characteristic of human female aging. Based on crosssectional analyses the sequential decline of bone mass in female chimpanzee may be said to be genuine. On the other hand, we found in adulthood through elderly, male chimpanzees show a longer plateau than female chimpanzee, that is, bone mineral content is maintained in male.
Keyword: Javanese children, growth spurt, chimpanzee, second metacarpal bone, bone loss, Higher Primates