Judul: Utilization of the media internet as information source for ornamental plant farmers in Bogor
Abstrak: Ornamental plant is one of the agricultural products to be developed. For such necessities, the ornamental plant farmers need informations from the right sources. One of the sources frequently used is the internet media. Now adays, the people of Indonesia have been familiarized to use such a useful media for many field of development, including the agriculture. At present, the information on the growth and development of agriculture is still very scarce. Whereas, farmers need the right information of agricultural development to support their functions. The question is at what extent do the ornamental plant farmers have utilized internet as the source of information on cultivation techniques, marketing, or the selection of ornamental plants. Internet media is defined as a vast network which is licensed not only to be able to connect each other to disseminate and share digital files, but also to shorten the distance between countries. This research analyzes: the characteristics of ornamental plant farmers, their motivation in using internet media, their perception about internet media, and the internet media usage as a source of information; the relationship between the characteristics of ornamental farmers and internet media utilization as a source of information; the relationship between farmers’ perceptions and internet usage as the sources of information; and the relationship between perceptions of farmers with the use of the internet as an ornamental plant resources. The study was conducted in the Bogor branch of Indonesian Floriculture Association. The populations in this study are all the 35 ornamental plant growers who use the internet as a source of information. Data were collected through questionnaires, observation, in-depth interviews and documentation from June to December 2012. The Data collected in this study consists of primary data and secondary data. Data were analyzed by descriptive statistics and inferential statistical analysis. Descriptive statistics were used to describe the data in general by using frequency, percentage, score and total score. Inferential statistical analysis is used to examine the relationship between variables X and Y with the Spearman Rank test and Chi Square. The results show that the age of ornamental plant farmers was dominated by 35- 51 years of age and most were female. Most farmers have low level of formal education, and most farmers had attended non-formal education. On the characteristics of learning resources, the majority of farmers conduct friends as a source of learning, Most of the farm-scale farmers is low (<600rb/month) and most have land only <300 square feet (narrow). Most farmers have high accessibilities of media. Regarding motives, farmers generally have a higher motive in using the internet as a source of information. Most of the farmers use internet media to add information, to broaden horizons, to overcome the problem, to expand social networks and to satisfy curiosity. Most farmers have a pretty good perception about the internet media and internet media utilization gains. On the use of the internet as a source of information, most of the farmers use the internet as a source of information on cultivation techniques, crop marketing and selection of plant species. The characteristic of farming experience has
Keyword: internet media, ornamental plant, information source

Judul: The Information Needs Levels and Internet-based Media Usage Levels of Urban Farmers.
Abstrak: The limited number of extension agents who guide the community in implementing urban farming encourages the community to utilize various information sources to fulfill their information needs. The current development of internet-based media provides easy access to urban farming information without being limited by space and time. This research aims to analyze the relationship between the level of information needs and the internet-based media usage level by urban farmers. This research used censuthe s method by distributing questionnaires to 33 members of the urban farming group in the "Buruan Sae" program in RW 02 and RW 04, Cipamokolan Village, Rancasari District, Bandung City. The research shows that there is a relationship between the need for urban farming information and the use of internet-based media, where the higher the need level of cultivation information, the greater the variety of internet-based media used, the higher the frequency of YouTube and the Ministry of Agriculture website usage, and the higher the duration Ministry of Agriculture website and E-commerce platform usage. In addition, the higher the need level of product processing information, the higher the duration of Facebook usage., Keterbatasan jumlah penyuluh yang membina masyarakat dalam pelaksanaan urban farming, mendorong masyarakat untuk memanfaatkan barbagai sumber guna memenuhi kebutuhan informasi dalam mendukung kegiatan urban farming yang dilakukannya. Perkembangan media berbasis internet saat ini memberikan kemudahan akses informasi urban farming tanpa terbatas ruang dan waktu. Tujuan dari penelitian ini adalah menganalisis hubungan tingkat kebutuhan informasi dengan tingkat penggunaan media berbasis internet dalam pencarian informasi urban farming. Penelitian ini menggunakan metode sensus dengan menyebarkan kuesioner kepada 33 anggota kelompok urban farming pada program “Buruan Sae” di RW 02 dan RW 04, Kelurahan Cipamokolan, Kecamatan Rancasari, Kota Bandung. Hasil penelitian menunjukkan bahwa terdapat hubungan antara kebutuhan informasi urban farming dengan penggunaan madia berbasis internet dimana semakin tinggi kebutuhan informasi budidaya, maka semakin banyak ragam media berbasis internet yang digunakan, semakin tinggi frekuensi penggunaan Youtube dan situs Kementan, serta semakin tinggi durasi penggunaan situs Kementan dan platform E-commerce. Selain itu, semakin tinggi kebutuhan informasi pengolahan hasil maka semakin tinggi durasi penggunaan Facebook.
Keyword: information needs, internet media, urban farming, kebutuhan informasi, media internet

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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