Judul: Persepsi, sikap dan prilaku masyarakat sekitar hutan terhadap nilai sumberdaya hutan : Studi kusus di Desa Cihayawar Kecamatan Nagrak Kabupaten Sukabumi
Abstrak: Masyarakat sekitar hutan memiliki keterkaitan yang erat dengan hutan dan lingkungan dan adanya ketergantungan antara masyarakat dan sumberdaya hutan. Pemberdayaan masyarakat menjadi hal yang penting dan menentukan dalam upaya menjaga kelestarian hutan. Informasi mengenai keadaan dan kondisi masyarakat menjadi hal yang perlu diperhatikan seperti persepsi, sikap dan perilaku masyarakat yang diharapkan selaras dengan prinsip-prinsip kelestarian. Persepsi, sikap dan perilaku memiliki keterkaitan satu sama lain dan saling mempengaruhi. Persepsi akan mempengaruhi sikap dan sikap akan mempengaruhi perilaku. Namun hubungan yang ada tidak selalu konsisten dan dipengaruhi faktor-faktor lain. Persepsi responden terhadap sumberdaya hutan di Desa Cihanyawar yang merupakan desa yang berbatasan langsung dengan hutan produksi (Perhutani) dan Taman Nasional Gunung Gode Pangrango merasa memiliki keterkaitan secara langsung dalam segi ekonomi dan ekologi. Manfaat ekonomi yang dirasakan responden terkait dengan adanya lahan tumpang sari sebagai lahan garapan dan hasil hutan lainnya.
Keyword: forestry, persepsi

Judul: Persepsi, Sikap, Perilaku Masyarakat Sekitar Hutan terhadap Keberadaan hutan Penelitian Haurbentes (Studi Kasus desa Jugalaya, RPH Jasinga, BKPH Jasinga, KPH Bogor
Abstrak: The Society around forest has a strong correlation with the forest and the environment; also there is dependence between the society and forest resources. Making efficient use of the society becomes an important and determined thing in order to keep the preservation of the forest. The information about the situation and condition of the society becomes the things that need to be concerded. Such as perception, attitude and behaviour of the society which are expected to be in accordance with the principle of the conservation. Perception, attitude and behaviour prossess a connection one another and influence each with production forest (Perhutani)and Research Forest haurbenties, is they feel that they have a direct connection in economics and ecology. The economics use that the respondents feel interrelated with the existence of land as an area to produce and others forest products. This research intends to know the perception, attitude and behaviour of the society towards the forest in keeping the preservation of the forest, to know the factors that influence the perception, attitude and behaviour towards forest resources, also to know the relation among the perception, attitude and behaviour of the society it self
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