Judul: Efektivitas Cyber Extension Sebagai Media Komunikasi dalam Diseminasi Teknologi Pertanian
Abstrak: Cyber extension is a communication mechanism of agricultural innovation by using new communication media that integrate information and communication technology in agricultural development. The objectives of the research are: (1) to analyze individual characteristics correlation with effectiveness communication media cyber extension; (2) to analyze accessibility correlation with effectiveness communication media cyber extension; and (3) to analyze individual characteristics correlation with accessibility communication media cyber extension. This study was approached by using quantitative method supported by qualitative data. Result of research showed that not all individual characteristic variable correlation with effectiveness. That not all variables correlations accessibility with the effectiveness. Other results showed formal education level correlation with perception of relative advantage level communication media cyber extensions.
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Judul: Faktor-faktor yang Berhubungan dengan Pemanfaatan Cyber Extension
Abstrak: Cyber extension generally aims to develop agricultural information system based on integrated web; efficient; and beneficial to the agricultural extension, the extension institutional, and also agribusiness actors or society in general. The aims of this study were to determine the relationships of agricultural extension counselor characteristic, the counselor perceptions of cyber extension characteristics, and associated external factors of the intensity use of cyber extension and level of perceived usefulness. This study used survey method with a a sample of 36 agricultural extension counselors that used cyber extension. Results of statistical analysis of Spearman Rank test and Chi-Square showed that only age, the modern mass media possession, the experience of using the internet, and the level of motivation which had associated with the intensity use of cyber extension and level of perceived usefulness. While for the perceptions of the characteristics of cyber extension showed that only one perception variable had related with the extension and intensity use of cyber extension and level of perceived, which is perceived level of probability attempt of cyber extension. The result showed that no relation of external factors with intensity of use of cyber extension and level of perceived usefulness.
Keyword: agricultural extension counselor, the use of media, characteristics, external factors, cyber extension

Judul: Aspek kehidupan dan reproduksi pada lumba-lumba
Abstrak: Lumba-lumba merupakan mammalia yang hidup di laut dan sebagian hidup di beberapa perairan air tawar. Hewan ini mempunyai bentuk tubuh yang streamline, moncong seperti paruh serta mempunyai gigi kurang lebih 200 buah. Tubuh lumba-lumba dilapisi oleh spermaceti yang terdiri dari lapisan minyak. Hewan yang sering terlihat di gelanggang-gelanggang samudra ini mempunyai ekor horizontal dan panjang tubuhnya berkisar 1,1 meter sampai 9 meter (Yablokov, 1974). Bia- sanya jantan lebih besar daripada yang betina. Di dalam klasifikasinya lumba-lumba termasuk dalam kelas mammalia, ordo Cetacea dan subordo Odontoceti. Di seluruh perairan dunia, terdapat banyak sekali spesies lumba-lumba, yang keseluruhannya termasuk ke dalam kelompok famili Delphinidae yang terdiri atas 19 genus ya- itu : Steno, Sotalia, Stenella, Delphinus, Lissodelphis, Orchinus, Lagenodelphis, Tursiops, Grampus, Lagenorhynchus Orcaella, Cephalorhynchus, Peponocephala, Feresa, Pseu- dorca, Globicephala, Phocoena, Neophocoena, dan yang terakhir Phoconoides (Yablokov, 1974). Tiga genus yang terakhir tidak termasuk lumba-lumba. Selain famili tersebut di atas, terdapat pula lumba- lumba yang hidup di perairan air tawar, yaitu dari famili Platanistidae (Cousteau, J.Y. , 1975). Makanan utama lumba-lumba berupa ikan (tuna, cumi-cu- mi, dan lain-lain), mollusca, cephalopoda dan crustacea. Dalam mencari makanannya, lumba-lumba bermigrasi secara teratur. Mereka menghabiskan musim panas di daerah kutub, kemudian bermigrasi ke daerah selatan selama musim dingin. Habitat lumba-lumba yang mutlak adalah air, baik air asin maupun air tawar. Mereka tidak dapat meninggalkan air, meskipun menurut asal-usulnya lumba-lumba merupakan mammalia darat (Coffey, D.J. 1977). Menurut Yablokov (1974) lumba-lumba betina memiliki sepasang ovarium yang rata/licin yang terdapat dalam ova- rian sac. Pada vagina beberapa spesies lumba-lumba terda- pat sumbat vagina/plug..dst
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