Judul: Peran Penyuluh dan Efektivitas Komunikasi terhadap Kompetensi Berusahatani Anggrek
Abstrak: Penyuluh memiliki peran penting yang mampu melakukan perubahan pada petani ke arah lebih baik dan kompeten. Dalam proses perubahan ke arah yang lebih baik dibutuhkan komunikasi yang efektif agar petani mampu mencapai kompetensi yang diharapkan dalam berusahatani anggrek Vanda. Tujuan dari penelitian ini adalah untuk menganalisis peran penyuluh, efektivitas komunikasi, dan kompetensi berusahatani anggrek. Selain itu, penelitian ini juga bertujuan menganalisis hubungan peran penyuluh dengan efektivitas komunikasi dan menganalisis hubungan efektivitas komunikasi terhadap kompetensi berusahatani petani dalam kegiatan pembinaan penyuluhan anggrek. Penelitian ini dilakukan pada petani yang mengikuti kegiatan penyuluhan anggrek di Kecamatan Pamulang, Kota Tangerang Selatan. Penelitian ini menggunakan pendekatan kuantitatif melalui metode sensus yang didukung dengan metode kualitatif. Hasil penelitian menunjukkan bahwa penyuluh telah berperan baik dalam kegitan penyuluhan budidaya anggrek, namun komunikasi yang berjalan selama kegiatan penyuluhan berlangsung tidak efektif karena petani belum mampu menerapkan budidaya anggrek sehingga kompetensi yang dimiliki petani tergolong rendah. Selain itu, Peran penyuluh memiliki hubungan yang tidak signifikan dengan efektivitas komunikasi. Begitu pula dengan efektivitas komunikasi memiliki hubungan yang tidak signifikan dengan kompetensi berusahatani petani., Extension agents play a critical role in helping farmers improve and become more competent. Effective communication is necessary for the process of change for the better so that farmers can develop the expected skills in farming Vanda orchids. This study aimed to evaluate the function of the extension agent, the efficiency of communication, and the expertise of orchid farming. This study also aims to look into the relationship between the extension worker's function and communication effectiveness as well as the relationship between farmers' farming competence and communication effectiveness in activities related to orchid extension development. The research was done on farmers who took part in orchid extension programs in Pamulang District, South Tangerang City. This study takes a quantitative approach through census methods and qualitative methods. The findings indicated that the extension agent had done an excellent job of counseling farmers on orchid farming, but the effectiveness of communication were ineffective since the farmers was unable to put orchid farming into practice and the farmers' competence at a low level. Additionally, there is no correlation between the extension agent's role and communication effectiveness. The effectiveness of communication is also unrelated to the farmer's farming competence.
Keyword: Communication effectiveness, Extension agents’ role, Farmers, Farming competence

Judul: Efektivitas Komunikasi pada Kegiatan Pendampingan Program “Jati Unggul Nusantara” di Desa Ciaruteun Ilir, Cibungbulang, Kabupaten Bogor
Abstrak: The teak business of Usaha Bagi Hasil Koperasi Perumahan Wanabakti Nusantara (UBH-KPWN) unit conducted by a partnerships with farmers. The effective communication between field guides and farmer is important to improve the productivity. The method used in the study is a survey method supported by quantitative and qualitative data. The results showed the characteristics of farmers dominated adulthood, moderate education level, experience in farming classified as moderate, low income, limited arable land, and the farmers' participation in extension activities classified as moderate.Field guides have a close relationship with farmers, very good credibility and attitude,and frequency to visits the farmer group is also quite high,as well as excellent communication field guides. The communication efficacy between farmers and field guides been effective. It is related to the frequency of participation of farmers, proximity, credibility, mastery of the material program, and the appropriateness of extension methods.
Keyword: assistance activities, communication, field guides, farmer

Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix