Judul: Komunikasi Pembelajaran dalam Penggunaan Screenhouse di Kecamatan Pacet Kabupaten Cianjur
Abstrak: The development of the agricultural sector is directed at increasing the production and productivity of agricultural commodities to increase the welfare of the farming community. However, in its implementation, there are various obstacles, including climate change. The impact of climate change results in lo of up to 40 percent in the agricultural sector. Adaptation of climate-smart behavior needs to be increased to reduce the risk of losses in the agricultural sector due to climate change, one of which is by using techno which is Screenhouse as a plant house at an affordable price, can overcome the problem of climate change in Indonesia. The research was conducted on horticultural farmers who already know screenhouse agricultural technology, both those who have used it and those who have not used it, with as many as 70 respondents. The number of samples is determined through the minimum number of samples used in the SEM-PLS analysis, namely ten times the number of indicators in the latent variables using nonprobability sampling techniques and purposive sampling. The research was conducted for one month. Data was collected through interview techniques using a structured questionnaire. Data were analyzed using the SEM-PLS analysis technique through the SmartPLS application. The results showed that the behavior of farmers in using screenhouses was low because most of them had not used screenhouses. Farmers who have used screenhouses in the simple version have yet to be equipped with complete technology (drip irrigation, temperature control, sprinklers, blowers). Factors influencing farmer behavior in imitating the model using a screenhouse are personal factors at 55,8 percent, environmental factors at 26,8 percent, and environmental factors through personal mediation factors at 33,8 percent. The higher of the farmer's knowledge, understanding, yield expectations, and interest in the screenhouse, the more farmers' behavior using the screenhouse will increase. Increasing farmers' perceptions of the characteristics of models/figures to emulate and support from social groups will improve farmer behavior in using screenhouses. This is in accordance with Albert Bandura's theory, Social Cognitive Theory which shows a relationship between personal factors, environmental factors, and individual behavior. The environment has a role in the learning process by individuals by observing and imitating the behavior of others. Suggestions for the government, especially those dealing with agricultural extension activities, are the socialization of screenhouse technology, especially for farmers unfamiliar with it. This will provide knowledge to farmers about the benefits, and costs of making and how to use and maintaining screenhouses. In addition, it needs to be supported by a demonstration plot on the use of screenhouses on farmer's land.
Keyword: komunikasi pembelajaran, screenhouse, teknologi pertanian, social cognitive theory

Judul: Faktor-faktor yang mempengaruhi efektivitas komunikasi di dalam sekolah lapang padi
Abstrak: A study was carried out to analyze the relationships among influencing factors to communication effectiveness in socialization of technological innovation in conducting the program of Field School of Integrated Crop Management of Rice, in Cikarawang Village, Bogor Barat Sub-district, Bogor City. Data were collected using questionnaire method, and then analyzed using τ - Kendal descriptive method. The results of the study showed that the factor of field guide characteristic had a significant correlation with the communication participation of farmer. The field guide characteristics also had a significant correlation with the technological innovation characteristic (i.e. trialibility and observability). Some elements of farmer characteristics (i.e. age and experience) significantly correlated with the communication participation of farmer. However, all elements of communication channels (type of media and place and time suitability) were not correlated with the communication participation of farmer. This could be due to the absence of other type of media, other than the direct communication (meeting, discussion and field practice). Farmer participation to the main activities of the field school program (PRA, meeting, discussion and field practice) significantly correlated with the knowledge enhancement (cognitive) and with the attitude change tendency (affective) of program-involved farmers. However, the communication participation of farmer was not correlated with the action of program-involved farmers to apply technological innovation of the field school. In other words, although program-involved farmers had obtained enough knowledge and had tendency to choose technological components in the field school program, but in general they had not yet applied optimally the components.
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Judul: Transisi Fasa Materi Hadronik ke Materi Kuark pada Inti Bintang Neutron.
Abstrak: Bintang neutron terdiri dari beberapa lapisan yang disusun oleh materi nuklir yang berbeda dengan kerapatan yang semakin tinggi ketika mendekati pusat bintang. Inti luar bintang neutron disusun oleh materi hadronik (nukleon, lepton, dan hyperon), sedangkan inti dalam bintang neutron disusun oleh kuark-kuark bebas (up, down, strange) yang saling berinteraksi. Tujuan penelitian ini adalah mempelajari bagaimana transisi dari inti luar ke inti dalam bintang neutron dengan menggunakan pendekatan RMF (Relativistic Mean Field) untuk materi hadronik dan CIDDM (Confined Isospin Density Dependent Mass) untuk materi kuark. Tekanan transisi diperoleh ketika potensial kimia barion materi hadronik dan materi kuark bernilai sama. Nilai tekanan transisi dengan parameter SU6-TM1 sekitar 87 MeV/fm3 dan diperoleh massa maksimum bintang neutron yaitu 1.92M dengan jari-jari sekitar 8.62 km. Nilai tekanan transisi dengan parameter SU6-G2 sekitar 53 MeV/fm3 dan massa maksimum bintang neutron yaitu 1.88M dengan jari-jari sekitar 8.16 km. Jenis transisi fasa adalah orde satu ditandai dengan diskontinuitas dalam kerapatan energi (adanya mixed phase). Parameter-parameter pada model nuklir yang digunakan menyebabkan perbedaan kekakuan persamaan keadaan (EOS) dari materi hadronik dan materi kuark sehingga nilai tekanan transisi dari fasa hadronik ke fasa kuark juga berbeda.
Keyword: bintang neutron, persamaan keadaan, transisi fasa