Judul: The Effect of Visual Forms and Duration of Youtube Videos of Sustainable Food Houses on Increasing Farmers' Knowledge
Abstrak: Diseminasi inovasi hasil penelitian dan pengkajian pertanian merupakan aktivitas komunikasi yang penting dalam mendorong terjadinya proses penyebaran dan penerapan teknologi dalam suatu sistem sosial masyarakat. Pilihan media sebagai sarana diseminasi menjadi kunci utama agar penyampaian informasi dapat dilakukan dengan cepat, mudah diakses dan tidak terbatas ruang dan waktu. Media sosial merupakan sarana diseminasi yang cukup efektif dan efisien karena memiliki kelebihan dalam hal kecepatan penyebaran, serta luasnya jangkauan khalayak yang bisa diraih. Strategi diseminasi inovasi Badan Litbang Pertanian melalui video di media sosial Youtube harus mempertimbangkan sejauh mana keefektivannya dalam meningkatkan pengetahuan, keterampilan, dan merubah sikap khalayak pemirsanya, hal ini dimaksudkan agar biaya dalam pembuatan konten yang dikeluarkan institusi sebanding dengan tingkat adopsi inovasi teknologi pertanian oleh masyarakat secara optimal. Penelitian dimaksudkan untuk menganalisis pengaruh bentuk visual dan durasi video Youtube kawasan rumah pangan lestari terhadap peningkatan pengetahuan petani. Penelitian ini merupakan eksperimental murni dengan desain faktorial 2 x 2 dan menggunakan pretest posttest control group design. Subjek penelitian berjumlah 50 orang, yang kemudian dibagi dalam empat kelompok eksperimen, yaitu (K1) kelompok responden yang diperlihatkan video dengan bentuk visual realistik berdurasi pendek, (K2) kelompok responden yang diperlihatkan video dengan bentuk visual realistik berdurasi panjang, (K3) kelompok responden yang diperlihatkan video dengan tampilan animasi infografis berdurasi pendek, (K4) kelompok responden diperlihatkan video dengan tampilan animasi infografis berdurasi panjang, dan satu kelompok kontrol. Masing-masing kelompok terdiri dari 10 orang dipilih secara acak. Pengolahan data menggunakan SPSS 23.0 untuk melihat melihat pengaruh bentuk visual dan durasi video, serta melihat hubungan karakteristik personal dan perilaku komunikasi responden terhadap peningkatan pengetahuan inovasi Badan Litbang Pertanian. Hasil statistik menunjukkan penyajian inovasi Badan Litbang Pertanian melalui video berpengaruh terhadap peningkatan pengetahuan responden. Peningkatan pengetahuan yang paling tinggi diperoleh dari video bentuk visual realistik dengan durasi panjang, diikuti oleh video bentuk visual realistik dengan durasi pendek, selanjutnya video animasi infografis dengan durasi panjang, dan yang terakhir adalah video animasi infografis dengan durasi pendek. Karakteristik personal dengan indikator pengalaman bertani, dan perilaku komunikasi dengan indikator ekspose pada media komunikasi juga memiliki korelasi dengan peningkatan pengetahuan responden., Disseminating agricultural research innovation is an important communication activity to encourage the process of applying technology in a social system. The choice of media to disseminate information is the main key so that information can be conveyed quickly, easily accessed and is not limited by space and time. Social media is quite effective and efficient because it has advantages in terms of speed of distribution and reaching the wider community. Agency for Agricultural Research and Development 's strategy of disseminating information through videos on social media Youtube must consider the extent to which its effectiveness in increasing knowledge, skills, and change the attitude of the audience, it is meant to make the content cost which issued by the institution is proportional to the optimum adoption level of agricultural technology by the community. This study is intended to determine the effectiveness of agricultural innovation dissemination through videos on YouTube social media. This research is a purely experimental study with a 2 x 2 factorial design and uses a pretest posttest control group design. The research subjects
Keyword: bentuk visual, durasi, peningkatan pengetahuan, video, youtube

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: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology