Judul: Jaringan Komunikasi Informasi Harga dan Pemasaran Sayur
Abstrak: Farmers need an adequate and trusted information in order to increase vegetable marketing. For fulfilling their information requirement, farmers establish a communication network among them. The purposes of this research were (1) to describe the communication network in price information and vegetable marketing among farmers (2) to analyze the relationship between personal characteristics of farmer and the communication network in price information and vegetable marketing. All members of Tani Jaya Farmer-Group, 21 farmers were taken as sample by using sampling intact system. This research resulted several outputs i.e: (1) communication network about vegetable price information was interlocking personal network and communication network about vegetable selling was radial personal network (2) there was significant relationship between arable land area, side job in addition to farming with local and global centrality of communication network about vegetable price information. There was also significant relationship between arable land area with global centrality of communication network about vegetable selling.
Keyword: vegetable marketing, vegetable farmers, communication network

Judul: aringan Komunikasi Kelompok Tani di Desa Benteng Jawa Barat Indonesia
Abstrak: Communication network analysis is one of method that can be used to identify the interaction of individuals with each other in particular group or with other parties outside the group, This method not only focused on the individuals and the social unit but also the quality of the relationship between social units. The aims of this study were, (1) Describe communication networks among farmers groups markets in Benteng Village, (2) Describe the communication network which formed among farmer groups in Benteng village and the role of the individual in the network structure, (3) analyze the correlation between individual characteristics and communication network, (4) Analysis the role of communication networks and the markets of crop collectors in improving the agricultural production of farmers in Benteng Village, and analyze the relationship between the communication networks and farmers marketing to their products. This study was conducted by utilizing qualitative and quantitative methods through semi-structured questionnaire and interviews for all farmers' groups members in Benteng Village, the analysis unit consisted of individuals which total 107 people, distributed into three groups of farmers who are member Gapoktan in Benteng Village, Ciampea, Bogor regency. In order to identify the communication networks, UCINET VI software was used in farmer network analysis, as well as correlation analysis using the Microsoft Excel through SPSS reinforced by data from SPSS 20 statistical tests. The results showed that the structure of communication network in the Gapoktan Tani Benteng form the structure of the wheel, and variable of individual characteristics such as age, the scale of business, are significantly related to the degree centrality. Relationship between farmer’s characteristics and communication network was a significant correlation at the level of 10% of the respondents with the communication networks and the value of -0.186, Thus, it can be said that the younger members of Gapoktan are the most centralized in the system and interested in using communication networks to communicate with other members of the other groups, while the older members are less he or she will interest in communication networks, on the other hand, members of old Gapoktan, or older than 65 years do not contribute much to activities of farming. The result showed that the correlation between communication network (Y1) and marketing (Y2) are significant, so, the coefficient between communication network and marketing Showing that, whenever were the communication rate highly among farmers, whenever were the marketing rate high., Analisis jaringan komunikasi merupakan salah satu metode yang digunakan untuk mengidentifikasi interaksi antarindividu dalam kelompok tertentu atau dengan pihak lain di luar kelompok tersebut. Metode ini tidak hanya berfokus pada individu dan unit sosial tetapi juga kualitas hubungan antarunit sosial. Penelitian ini bertujuan untuk: (1), mendeskripsikan jaringan komunikasi pemasaran kelompok petani di Desa Benteng, (2), mendeskripsikan jaringan komunikasi yang terbentuk di antara kelompok petani di desa Benteng dan peran individu dalam struktur jaringan, (3), menganalisis korelasi antara karakteristik individu dan jaringan komunikasi, (4), menganalisis peran jaringan komunikasi dan pasar pengumpul (tengkulak) dalam meningkatkan produksi pertanian di Desa Benteng, dan menganalisis hubungan antara jaringan komunikasi dan pemasaran produk pertanian oleh petani. Penelitian ini dilakukan dengan menggunakan
Keyword: Agricltural Marketing, Communication Network, Farmers Group, Market Efficiency, Farmer Network Analysis

Judul: Pelapisan hidroksiapatit (HAp) pada permukaan logam Stainless Steel 316L dengan metode deposisi elektroforesis (EPD)
Abstrak: Telah dilakukan penelitian untuk melapisi permukaan logam stainless steel 316 L. oleh material hidroksiapatit dengan metode deposisi elektroforesis. Hidrokiapatit dibuat dengan metode presipitasi, dari hasil kalsinasi cangkang telur pada suhu 1000°C selama 5 jam dan (NH4)2HPO4- Pemilihan logam stainless steel (SS) didasarkan pada sifat ketahanan korosi yang baik, kadar impuritas rendah, dan mudah dibentuk. Penelitian dilakukan dengan melarutkan hidroksiapatit pada etanol ditambah trietanolamin sebagai dispersan. Konsentrasi Ca/ P yang digunakan pada saat presipitasi yaitu 0,3/0,16. Spektra infra merah menunjukkan hilangnya karbonat pada sampel hasil presipitasi yang dipanaskan pada suhu 900°C. Pola difraksi sinar X untuk hasil presipitasi yang dipanaskan pada suhu 900°C, menunjukkan fasa yang terbentuk adalah hidroksiapatit. Pola difraksi setelah coating menunujukkan adanya fasa hidroksiapatit dan base metal yaitu logam SS. Hasil uji mikrostruktur menunjukkan, diantara penggunaan variabel tegangan 30 V; 60 V dan 90 V selama 1, 2, dan 3 menit pada saat coating, penggunaan variabel tegangan 60 V selama 2 menit, menunjukkan hasil pelapisan yang paling merata pada permukaan logam SS. Sintering dengan suhu 800°C lebih menguatkan pelapisan hidroksiapatit pada permukaan logam dibandingkan dengan sintering pada suhu 250°C.
Keyword: Surface coating, Hydroxyapatite, Stainless steel, Deposition elektoforesis, Sintering;