Judul: Rancang Bangun Mesin Pemanen Udang Tipe Vakum
Abstrak: Shrimp is an important commodity for Indonesia, both in domestic and international markets. That quality is influenced by several factors including the harvesting process. So far, the harvesting process for fishery commodities in Indonesia is still using the traditional way. This research aims to design a vacuum-type shrimp harvester to improve the efficiency and effectiveness of farming productivity. So that the quality of shrimp harvested can be maintained high. Stages of this research starts from the problems identification, functional analysis, structural analysis, prototyping, and functional test. This design uses a vacuum system that is applied starting from the inlet channel, tanks, to the outlet channel. By using centrifugal water pump power, commodities in pond are inhaled and trapped in the tank without passing through the impeller. In addition, this design also uses a vacuum pump to maintain pressure in the system. It aims to solve the undetected leaks on the system. From the data obtained, the highest flow rate could reach 5.27 l/s with suction speed of 0.65 m/s, while the lowest flow rate is 4.75 l/s with suction speed of 0.59 m/s. Commodity that can be inhaled by this prototype is shrimp that has burst speed ranging in average of its suction speed, ie 0.61 m/s. It needs the next research to make the other harvesting mechanism to avoid the undetected leaks on the system
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Judul: Perancangan Mekanisme Sistem Penghisap pada Mesin Pemanen Udang dan Ikan
Abstrak: Fishery commodities have an important role in Indonesian economic. Commodity quality depends on several factors, for example harvesting process. So far, mechanism of fishery commodities harvesting is still it traditional way. Although recently there have been some mechanical shrimp harvesters, still is not widely used, not only because of the price but also the mechanical defect that becomes problem. The objective of this study is to design a vacuum system mechanism on the machine harvesters of shrimp and fish that can minimize the defect rate of harvested commodities. This vacuum system uses a reverse venturi mechanism, from a small hydraulic to a big hydraulic. The discharge during the process was relatively stable, ranging from 0.576 l/s - 0583 l/s. The most optimum combination for the positioning of inlet pipe and outlet pipe was a combination of top inlet and top outlet pipeline. It is not only affected by factors from the fluids flow itself but also by the commodity behavior. When the harvesting time occur the commodity congregate under the filter contained in the fish trap. From the performance test, the pecentage of rcommodities that were still alive was high which was 98.9%.
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Judul: Post-Truth dan Infodemi, Analisis Pengaruh Sosial dan Bias Kognitif Tokoh Agama dalam Literasi Informasi Kesehatan selama Pandemi Covid-19.
Abstrak: Upaya pengendalian pandemi Covid-19 dihadapkan dengan massifnya penyebaran disinformasi Covid-19, yang menyebar lebih cepat daripada virus itu sendiri. Penelitian ini bertujuan untuk menganalisa pengaruh sosial dan bias kognitif para tokoh agama terhadap resepsi disinformasi Covid-19. Penelitian ini menggunakan teori Encoding-Decoding Stuart Hall, di mana audiens akan memiliki resepsi untuk menerima, bernegosiasi atau menolak makna dari berita-berita mengenai konspirasi Covid-19 dan obat Covid-19. Penelitian ini juga menguji pengaruh bias kognitif dalam merespon informasi yang mendukung atau menolak resepsi mereka. Metode penelitian ini menggunakan metode kualitatif dengan informan enam orang tokoh agama yang berafiliasi dengan organisasi masyarakat (ormas) Islam di Kabupaten Bogor. Yaitu Majelis Ulama Indonesia, Nahdlatul Ulama dan Muhammadiyah. Pengumpulan data dilakukan dengan wawancara mendalam, dan studi dokumentasi. Penelitian ini menunjukkan bahwa dalam kasus berita mengenai konspirasi Covid-19, pengaruh sosial terhadap para tokoh agama berupa reference group, membership group, significant other dan source credibility tidak menjadi dasar pertimbangan resepsi para tokoh agama untuk setuju atau tidak setuju pada makna dari berita-berita tentang konspirasi Covid-19, tetapi lebih kepada keberpihakan politik dari sumber pengaruh sosialnya tersebut. Sementara dalam kasus berita mengenai adanya obat Covid-19, pengaruh sosial para tokoh agama lebih kepada percaya atau tidak percaya kepada orang-orang yang memberikan testimoni akan khasiat dari obat-obat yang dapat menyembuhkan Covid-19. Resepsi para tokoh agama terbagi menjadi dua, yaitu negotiated reading dan oppositional reading, dan tidak ada satupun yang memercayai disinformasi konspirasi Covid-19 dan obat Covid-19 sepenuhnya (dominant-hegemonic reading). Dalam kedua resepsi itu selalu hadir bias kognitif dalam bentuk cognitive dissonance bias, backfire effect bias dan confirmation bias. Mengingat peran penting tokoh agama di tengah masyarakat, perlu upaya lebih lanjut dari organisasiorganisasi Islam untuk memberikan edukasi mengenai literasi informasi kesehatan yang lebih komprehensif kepada para pengurusnya, agar antara kebijakan pemerintah dan sikap para tokoh agama dapat berjalan beriringan dalam menghadapi bahaya pandemi Covid-19.
Keyword: disinformation, social influences, cognitive bias, audience reception