Judul: Uji Lapang Lacak Balak Kayu Meranti Balau Shorea laevis Ridl.) dengan Penanda Mikrosatelit
Abstrak: Kejahatan kehutanan (forestry crimes) merupakan salah satu isu panas (burning issue) yang terjadi di banyak negara berkembang dan dapat bersifat trans-nasional. Kegiatan kehutanan mulai dari pengadaan benih hingga penebangan tidak terlepas dari tindakan kriminal demi mendapatkan keuntungan yang besar dalam waktu singkat. Contoh yang sangat jelas terjadi di wilayah Kalimantan Barat dan Kalimantan Tengah dimana praktek penebangan liar (illegal logging) dan perdagangan liar (illegal trading) terjadi dengan mudahnya, dimana kayu meranti (Shorea spp.) mengalir dengan mudahnya ke negara tetangga yang dalam prosesnya bahkan dilengkapi dengan surat-surat keterangan yang sah.
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Judul: Tinjauan Kritis Kebijakan Legalitas Kayu di Hutan Rakyat: Kasus di Kabupaten Lampung Tengah, Konawe Selatan, Buleleng, dan Kulonprogo
Abstrak: Timber Legality Assurance System (TLAS) issued by the Ministry of Indonesian Forestry is aimed (1) to achieve sustainable forest management, (2) implement good forest governance, and (3) to combat illegal logging and its trade. This policy is enforced by mandatory, either for the harvested timber from the state forests or from private forest. Since its formulation to implementation, this policy reap the pros and cons. Parties are "pro" argued that in order to achieve the above three objectives, the policy must be enforced by mandatory for all timber businesses, while those who "cons" of this policy looked too much intervention of the private sphere. The objective of this study was to describe the process of policy-making timber legality in private forest, which is achieved by analyzing: 1) the determinants of performance, 2) discursive base for the establishment of regulation and determining influences, and 3) policy space as well as the prospective of policies. Observations on policy implementation was made on the private forest that had been certified with TLAS scheme. This study applied a descriptive analysis method synthesis, analytical hierarcy procces, and analysis of IDS. The study concluded the following: (1) the most dominant determinant factors for development of private forest are market price formation and organizational capacity, (2) Strong goverment, counterpart’s country, and donor institution may cause legality narrative dominate the process of policy making, and marginalize the economy incentives narrative, and (3) the strong actors, networks, interest, and narrative may cause limited policy space for policy change.
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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