Judul: Efektivitas Desain Pesan Video IPB “Karya untuk Negeri” dan Perubahan Persepsi Siswa SMA Negeri 2 Bogor tentang Pertanian
Abstrak: The purpose of this research is to identify the level effectiveness of message design on video and analyze changes in the perception of SMA Negeri 2 Bogor’s students about agriculture. The research uses experimental methods by pre-test and post-test. The result shows that the message design on video has a moderate level of the effectiveness which elements soundbite (audio) and pictures (visual) are the most interesting. IPB’s video “Karya untuk Negeri” is able to change the perception of students about agriculture for being better.
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Judul: Effectiveness of Instructional Video in the Dissemination of Agricultural Information (Field Experimental: Control of PBK Pest in Cacao Farming in Kecamatan Amahai, Kabupaten Maluku Tengah)
Abstrak: Factor of geography and limited agricultural communication channels made the dissemination of agricultural information limited and unequally distributed. The question is whether the brief and practical form of instructional video and its capability in exposing message could be used as an effective information channel. This research had the objective to clarify the performance effects of message of instructional video in increasing farmers’ knowledge and its correlation to perception indicator, personal characteristics, and communication behavior. The research was conducted on three experimental groups taken randomly from 60 cacao farmers. Two groups were treated with instructional video and demonstrative method, while the third group was treated as control. Separate pre-test and pos-test conducted on the samples was used as the design. ANCOVA and Spearman correlation method were used in analyzing the data. The results indicated that the message performance of the instructional video and demonstration method had the same effectiveness in influencing the increase in knowledge. The effect had the correlation to the perception about the instructional video, but had no correlation to the personal characteristics and communication behavior. Therefore, the effectiveness of the instructio n video in the dissemination of agricultural information was determined by the perception of the farmers, and it was effective for use by farmers with different personal characteristics and communication behavior.
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Judul: Posisi Filogeni Orlitia borneensis dan Hieremys annandalei (Testudines) Berdasarkan Gen 16s rRNA
Abstrak: Urutan DNA mitokondria (mtDNA) banyak digunakan sebagai penanda molekuler dalam menentukan hubungan filogeni suatu organisme karena struktur organisasinya yang stabil. Seiring dengan kemajuan bioteknologi, pengelompokkan kura-kura Bataguridal masih menjadi perdebatan. Hal ini disebabkan oleh perbedaan karakter yang diamati. Beberapa hasil penelitian mengelompokkan kura-kura ini ke dalam famili Emydidae tetapi ada yang menempatkan kurakura ini ke dalam famili tersendiri yaitu famili Bataguridae. Pada penelitian ini digunakan urutan nukleotida gen 16S rRNA O. borneensis dan H. annandalei (Testudines) yang disejajarkan dengan urutan nukleotida beberapa spesies Testudines lainnya yang terdapat di Genbank. Hasil rekonstruksi pohon filogeni berdasarkan urutan nukleotida 16S rRNA menunjukkan bahwa O. borneensis dan H. annandalei berkerabat dengan Chinemys reevesi (famili Bataguridae). Hasil amplifikasi gen 16S rRNA O. borneensis dan H. annandalei menunjukkan komposisi nukleotida didominasi oleh nukleotida adenin dan timin dengan nilai perbandingan antara A/T dan G/C = 60.1%:39.9% untuk O. borneensis dan 63%:37% untuk H. annandalei. Rasio transisi terhadap transversi (ts/tv) gen 16S rRNA berkisar antara 0.67 sampai dengan 6.75. Nilai jarak genetik terkecil terjadi antara Trachemys scripta dan Chrysemys picta dan antara Dogania subplana dan Tracemys scripta yaitu sekitar 0.005 sedangkan nilai jarak genetik terbesar terjadi antara Pelomedusa subrufa dan Emydura subglobusa yaitu sekitar 0.869.
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