Judul: Estimasi Nilai Kerugian Ekonomi Masyarakat Akibat Pencemaran di Sekitar Kawasan Pabrik Bijih Plastik (Studi Kasus: Kelurahan Cirimekar, Kecamatan Cibinong, Kabupaten Bogor).
Abstrak: Aktivitas industri tidak hanya memberikan manfaat tetapi dapat menimbulkan eksternalitas negatif seperti penurunan tingkat kualitas lingkungan. Kelurahan Cirimekar merupakan kelurahan yang terkena eksternalitas negatif akibat pencemaran di sekitar pabrik pengolahan bijih plastik. Penelitian ini bertujuan untuk mengidentifikasi eksternalitas negatif dan persepsi masyarakat terhadap pencemaran serta mengestimasi besarnya nilai kerugian ekonomi yang ditanggung oleh masyakat akibat pencemaran. Penelitian ini menggunakan metode analisis deskriptif, skala likert, cost of illness, loss of earnings dan replacement cost. Hasil dari penelitian ini menunjukkan bahwa masyarakat merasakan pencemaran air tanah, pencemaran udara dan debu, serta kebisingan suara. Hasil dari estimasi total kerugian ekonomi masyarakat diperoleh sebesar Rp 210 792 872/tahun.
Keyword: cost of illness, kerugian ekonomi, loss of earning, pencemaran replacement cost

Judul: Estimasi Nilai Kerugian Masyarakat Akibat Pencemaran Air Tanah di Sekitar Kawasan Industri (Studi Kasus Industri Keramik di Kelurahan Nanggewer, Kabupaten Bogor)
Abstrak: One of the activities of economy, like an industrial activity may reduce the level of environmental quality. The study of the estimation of both external cost and public compensation (WTA), the effects toward environment caused by industrial activities is needed to achieve sustainable development. The objectives of this study are to identify the negative externality effect of the industry activity, to estimate economic losses and WTA value caused by industrial activities, and to identify the factors that influence WTA value. This paper presents explores the descriptive analysis, valuation of environmental economics, and application of Contingent Valuation Methods (CVM). The result shows that the economic loss of each household per month is IDR 125,716.67 and the average values of household’s WTA per month is IDR 497,674.42. There are seven factors those influence WTA value significantly such as age, gender, income, economic loss caused by replacement cost, education level, the distance between houses and industry area, and economic loss caused by medical cost.
Keyword: Willingness to Accept (WTA), estimation, economic losses, CVM, ceramic industry

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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