Judul: Manfaat Sosial Ekonomi Danau Ranu Pani Taman Nasional Bromo Tengger Semeru Oleh Masyarakat Desa Ranu Pani.
Abstrak: Danau Ranu Pani adalah salah satu bentang alam yang ada di ekosistem hutan di Taman Nasional Bromo Tengger Semeru. Pengelolaan yang baik dari danau Ranu Pani sangat dibutuhkan sehingga manfaatnya dapat dirasakan secara berkelanjutan. Data penelitian didapat menggunakan metode wawancara dan kuesioner dengan skala Likert yang kemudian dianalisis secara deskriptif. Hasil dari wawancara dan kuesioner menunjukkan bahwa pemanfaatan langsung dari danau dilakukan dengan cara memancing pada musim penghujan dan pengambilan air pada musim kemarau. Danau juga dimanfaatkan oleh masyarakat secara tidak langsung melalui kegiatan wisata. Masyarakat dari luar desa Ranu Pani yang mengunjungi danau Ranu Pani dapat memberikan dampak ekonomi bagi masyarakat desa. Sedangkan dampak sosial muncul dari kegiatan memancing yang dilakukan oleh masyarakat lokal. Fungsi wisata pada desa di evaluasi dengan membandingkan motivasi dan kepuasan wisata. Hasil menunjukkan bahwa secara umum pengunjung telah mendapatkan kepuasan, terutama pada aspek pemandangan danau Ranu Pani. Hal ini mengindikasikan bahwa danau Ranu Pani memiliki potensi wisata yang baik yang kemudian sebaiknya dikembangkan dengan pengelolaan wisata yang lebih baik. Melalui kegiatan wisata yang baik diharapkan dapat memberikan dampak ekonomi yang lebih baik kepada masyarakat lokal.
Keyword: danau Ranu Pani, evaluasi kepuasan, pemanfaatan danau

Judul: Studi Konservasi Sumberdaya Alam Hayati pada Masyarakat Tengger di Resort Ranu Pani, Taman Nasional Bromo Tengger Semeru
Abstrak: Ranu Pani village is an enclave village located in a area Ranu Pani Resort, Bromo Tengger Semeru National Park. Purpose of this study was to access the understanding and motivation of Tengger society, the level of economic dependency, and examines the real action of conservation. Methods in use begins with a literature study, field observation, and questionnaires. The trust believed that the forest is the system of life that must be preserved for the sake of happiness the offspring, forming positiveness on Tengger society to maintain the forest in order to preservein an hereditary manner, utilization done very limited only adoption of kindling the trees that is dead and retrieval grass for cattle course. The economic society derived from the results of the field so as not to be depended from biological resources in the forest. Ranu Pani village society sometimes actively in conservation activities through planting, forest ares extinguish the blaze, and joined in the conservation cadre society ang public patner of rangers. Various counseling who regularly performed by the management of Ranu Pani Resort, capable of being creates understanding conservation for Ranu Pani society so take care of security of the area an understand the established rules.
Keyword: Ranu Pani Resort, Tengger society, conservation

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.
Keyword: