Judul: Faktor-Faktor yang Berhubungan dengan Efek Komunikasi dalam Pemasaran Lanting Ubi Kayu (Kasus Kecamatan Pituruh, Kabupaten Purworejo, Jawa Tengah)
Abstrak: The purpose of this study are; to analyze the relationship between internal factors and external factors to the marketing communications effect of cassava lanting. To understand the relationship of farmers in marketing communications effect cassava lanting to ward consumer purchases in terms of purchases number and purchasing motivation. The experiment was conducted in Pituruh District, Purworejo Regency, Central Java. There are two villages in the Pituruh District which are the central production of cassava lanting is Pituruh Village and Megulung Kidul Village. The choice of location is done intentionally because Pituruh District is the largest producer of cassava in Purworejo Regency. The selection of respondents was done by the census method that is selected 30 respondents who are still active in producing cassava lanting. The research method chosen is to use quantitative and qualitative data supported. Strategy obtain quantitative methods using survey techniques was descriptive and correlational research. Data collected in the research consisted of primary and secondary data. Data shows that internal factors are mostly connected with marketing communications effect of cassava lanting. Indicators of the communication effect is cognitive aspects, affective aspects, and conative aspects related to gender, productive time, and motivation to work. Education level and long work did not relate to all aspects of the communication effect. External factors largely unrelated to the marketing communications effect of cassava lanting. External factors that correlated with the communication effect in the aspects of labor only conative aspects and has a negative relationship. Effect of communications made by the seller cassava lanting in cognitive aspects, affective aspects, and conative aspects did not specify the purchases number and consumer purchasing motivations because the buyer's total purchases and motivation can be influenced by factors other than the seller.
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Judul: Jaringan Komunikasi Dalam Penerapan Teknologi Produksi Ubi Kayu (Kasus Petani Ubi Kayu di Desa Suko Binangun, Kecamatan Way Seputih, Kabupaten Lampung Tengah, Provinsi Lampung)
Abstrak: In order to increase cassava production, farmers need an adequate and trusted information to gain their purpose. Fulfilling their information requirement of cassava production technology, farmers establish a communication network among farmers. The objectives of this research were: (1) to describe communication network among farmers (2) to analyze the relationship between personal characteristics of farmer and the communication network (3) to analyze the relationship between communication network and the implementation of cassava production technology. The unit of analysis were cassavas farmer. A hundred farmers were taken as sample by using sampling intact system.This research resulted several outputs i.e : (1) communication network about seeds, fertilizer, pets and diseases were radial personal network and communication network about harvest was interlocking personal network (2) there was a significant relationship between income, group involvement, mass media ownership, arable land area with local centrality. There was also a significant correlation between educational level, revenue, group involvement, mass media ownership with global centrality. (3) there was a significant relationship between local centrality, global centrality and the implementation of cassavas production technology.
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Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik