Judul: Identifikasi Faktor Penyebab Kebakaran Hutan dan Lahan di Cagar Alam Kawah Kamojang (Komplek Guntur), Garut.
Abstrak: Kebakaran Hutan dan Lahan telah menimbulkan kerugian di bidang sosial, ekonomi dan ekologi di Indonesia. Kegiatan pengendalian kebakaran hutan dan lahan yang dilakukan tidak akan optimal tanpa diketahuinya faktor penyebab kebakaran hutan dan lahan. Gunung Guntur termasuk dalam kawasan Cagar Alam (CA) Kawah Kamojang (Komplek Guntur) dan hampir setiap tahunnya mengalami kebakaran hutan dan lahan. Penelitian ini bertujuan untuk mengidentifikasi faktor penyebab kebakaran hutan dan lahan di CA Kawah Kamojang (Komplek Guntur). Metode penelitian yang digunakan yaitu observasi lapang, wawancara mendalam dan penelusuran dokumen. Hasil dari wawancara, observasi lapang, pengumpulan dokumen serta data kebakaran hutan dan lahan menunjukkan bahwa faktor penyebab kebakaran hutan dan lahan adalah faktor manusia berupa aktifitas penambangan pasir, persiapan lahan dan pemburuan burung. Kebiasaan masyarakat dalam menggunakan api untuk mempersiapkan lahannya dikombinasikan dengan kemarau panjang akibat fenomena meningkatnya nilai SST Anomalies dan menurunnya nilai SOI dapat memicu kebakaran hutan dan lahan terjadi pada Bulan Juli hingga Oktober setiap tahunnya.
Keyword: Cagar Alam Kawah Kamojang, kemarau, persiapan lahan, penambangan pasir, penyebab kebakaran hutan dan lahan

Judul: Pengendalian Kebakaran Hutan dan Lahan di Kawasan Konservasi Kamojang Garut, Jawa Barat
Abstrak: INTRODUCTION. A conservation area contains of nature reserve and nature park. A nature reserve is a protected area of importance for wildlife, flora, fauna or features of geological or other special interest, which is reserved and managed for conservation and to provide special opportunities for study or research of science, culture, education, and technology to support the improvement of human prosperity and national development. A nature park is an area that usually used for tourism and nature recreation. The declaration of a conservation area aim to preserve the variation of wildlife, flora, fauna and its ecosystem. It is also an area which absorbs the lives surround it. Kamojang forest area is an important area which is located in citarum and cimanuk rivers. It means it has a strategic role to carry on the vital project such as Saguling, Cirata, Jatiluhur and Jatigede water dam. Nowadays, the threat to the stability of Kamojang nature reserve area in Garut, West Java is getting worst because of the growth of people and crisis of economics. The pressures suggest many people to open the forest, illegal logging, and forest fire. Because of that forest fire management system is needed and done effectively and efficiently. The purpose of the research is to identify, describe and analyze; 1) Land and forest fire control in conservation forest Bureau of Natural Resources Conservation (BKSDA) Garut, West Java, 2) Coordination system and participation among BKSDA Kamojang and related institution, private company, and community around the conservation area in forest fire control system. MATERIAL AND METHOD. The research was done in BKSDA Kamojang SKW V Garut, West Java. It is conducted from July to September 2008. it used qualitative approach which attempted to identify and describe The implementation of land and forest fire control in BKSDA Kamojang. It used triangulation method with observation technique, deep interview, participatory observation and documentary analyzing. The Analyzing data contains data reduction, data display, and conclusion drawing/verification. RESULT AND CONCLUTIONS. Forest and land fire control in conservation area needs different approaching and handling than other types of forest. All stakeholders have their responsible to natural resources and its preservation. Forest fire control which is applied by BKSDA Kamojang Garut, west Java. It includes prevention activity, shutting down, and handling after burnout which refer to Directorate general of PHKA program. BKSDA Kamojang efforts in land and forest fire control such as, taking a chance of land cultivation for community, providing cattle incentive like a sheep, counseling and training for group of community volunteers through, serving motivation, counseling. Training to improve their ability and awareness in land and forest fire control activity which is guided by section and resort Kamojang level.
Keyword: 

Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model