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: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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