Judul: Pengetahuan, Persepsi, Motivasi, dan Sikap Petani dalam Penggunaan Pestisida Sintetis
Abstrak: Tujuan penelitian ini adalah untuk menganalisis pengetahuan, persepsi, motivasi, dan sikap petani terhadap penggunaan pestisida sintetis. Metode survey dari desain cross sectional study dilakukan dengan menggunakan 100 petani padi di Desa Cikarawang yang menggunakan pestisida sintesis. Uji korelasi Pearson menghasilkan adanya hubungan antara pendidikan dan umur dengan pengetahuan petani, umur dan persepsi serta persepsi dan motivasi petani. Lama pendidikan memiliki pengaruh terhadap pengetahuan. Faktor-faktor yang mempengaruhi persepsi adalah umur, luas lahan padi, frekuensi penggunaan dan motivasi. Sementara itu, faktor-faktor yang mempengaruhi motivasi adalah jenis kelamin dan frekuensi penggunaan pestisida.
Keyword: Attitudes, Knowledge, Motivation, Perception, Synthetic pesticide

Judul: Pengetahuan, Sikap, dan Tindakan Petani Sayuran dalam Penggunaan Pestisida di Kabupaten Pandeglang, Banten.
Abstrak: Pesticide is common techniques used by farmers to control plant pests and diseases. Improper and excessive uses of pesticides often occur in pesticide application due to low farmer’s knowledge and skill. The aim of this study was to obtain information and analyze of the knowledge, attitude, and practice of vegetable farmers in pesticide use in Pandeglang Regency, Banten. This study has been conducted by using direct survey using structured questionnaires to obtain a primary data, while secondary data was obtained from local government and literature study. The survey location was determined by purposive sampling. The number of respondents were 150 vegetables farmers. The data was presented descriptively and analyzed using the χ2 (chi-square) test to analyze the relationship between each characteristic tested. Knowledge, attitude, and practices of vegetable farmers in Jiput, Pulosari, and Menes districts showed some differences. Generally, the farmers at Pulosari district have low rational attitude in the use of pesticides compared with two other districts. Many factors influence the knowledge, attitude, and practices of vegetable farmers in three districts in the use of pesticides. Based on the analysis and relationship tests, factors of age and income of farmers showed influence unsignificantly compared with two other variables such as education and participation of farmers in farmer groups.
Keyword: knowledge, pesticides types, plant pests and diseases, vegetable farmer

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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