Judul: Landscape Planning of Nirmala’s Tea Plantation Agrotourism in Malasari Village, Nanggung District, Bogor Regency
Abstrak: Perkebunan Teh Nirmala atau PT. Sumi Asih adalah perusahaan yang dikelola oleh swasta dan bergerak pada bidang pengolahan teh. Perkebunan teh tersebut memiliki luas lahan mencapai 966,69 ha dan didominasi dengan tutupan lahan perkebunan teh sebesar 63,60% dari luas kawasan perencanaan. Adanya potensi budaya dan sejarah yang kaya di Desa Malasari dapat menjadi multikultural dengan potensi alam yang dihasilkan oleh perkebunan teh Nirmala. Tujuan dari penelitian ini yaitu (1) mengidentifikasi data fisik, biofisik, kesesuaian lahan, dan sosial budaya di Desa Malasari dan Kawasan agrowisata kebun teh; (2) Menganalisis potensi dan kendala dari Kawasan agrowisata perkebunan teh Nirmala di Desa Malasari; dan (3) menyusun rencana lanskap agrowisata Kawasan perkebunan teh Nirmala di Desa Malasari. Metode perencanaan yang dilakukan terdiri dari tahap inventarisasi, analisis, sintesis, dan perencanaan lanskap. Analisis dilakukan pada aspek fisik, biofisik, objek dan daya tarik wisata, persepsi dan preferensi dari beberapa stakeholder, serta pendekatan TOS. Konsep perencanaan yang disusun berupa konsep perencanaan yang bersifat berkelanjutan dengan menerapkan dua aspek, yaitu keberlanjutan sosial dan lingkungan. Hasil dari penelitian ini berupa rencana lanskap yang terdiri dari rencana ruang, rencana sirkulasi, rencana tata hijau, rencana aktivitas dan fasilitas, serta rencana daya dukung. Berdasarkan hasil pembagian ruang terdiri dari ruang agrowisata, penunjang agrowisata, wisata pendukung, dan konservasi. Kata Kunci : Perencanaan Lanskap, Desa Malasari, Agrowisata, Perkebunan Teh, Nirmala Tea Plantation or PT. Sumi Asih is a privately managed company engaged in tea processing. The tea plantation has a land area of 966.69 ha and is dominated by tea plantation land cover of 63.60% of the area of the planning area. The existence of rich cultural and historical potential in Malasari Village can become multicultural with the natural potential produced by Nirmala tea plantations. The aims of this study were (1) to identify physical, biophysical, land suitability, and socio-cultural data in Malasari Village and the tea plantation agro-tourism area; (2) Analyze the potential and constraints of the Nirmala tea plantation agro-tourism area in Malasari Village; and (3) formulating an agro-tourism landscape plan for the Nirmala tea plantation area in Malasari Village. The planning method used consists of inventory, analysis, synthesis, and landscape planning stages. The analysis was carried out on physical, biophysical, tourist objects and attractions, perceptions and preferences of several stakeholders, as well as the TOS approach. The planning concept developed is in the form of a sustainable planning concept by applying two aspects, social and environmental sustainability. The results of this research are landscape plans consisting of spatial plans, circulation plans, green planning plans, activity and facility plans, and carrying capacity plans. Based on the results of the division of space consists of agro-tourism space, agro-tourism support, supporting tourism, and conservation. Keywords : Landscape Planning, Malasari Village, Agrotourism, Tea Garden
Keyword: Landscape Planning, Malasari Village, Agrotourism, Tea Garden

Judul: Landscape Planning of Ecotourism in Malasari Village, Mount Halimun Salak National Park
Abstrak: Indonesia memiliki 53 taman nasional yang tersebar di seluruh penjuru negeri. Taman nasional dengan tingkat biodiversitas yang tinggi di Pulau Jawa yaitu Taman Nasional Gunung Halimun Salak (TNGHS). Upaya pelestarian TNGHS dihadapkan pada beberapa masalah. Salah satu masalah yang sering terjadi adalah adanya konflik kepentingan antara masyarakat dengan pengelola taman nasional dikarenakan pelanggaran pemanfaatan lahan dan sumber daya. Konflik ini terjadi di beberapa desa, salah satunya adalah Desa Wisata Malasari yang memiliki potensi tinggi untuk dikembangkan sebagai kawasan ekowisata. Namun, kegiatan ekowisata belum memberikan keuntungan yang nyata bagi masyarakat lokal sehingga performa ekowisata Desa Malasari perlu ditingkatkan dengan perencanaan lanskap yang mengintegrasikan potensi desa yang disesuaikan dengan karakteristik lanskap desa dalam mempertahankan fungsinya sebagai wilayah konservasi taman nasional dan hutan lindung. Tujuan dari penelitian ini adalah menyusun perencanaan lanskap kawasan ekowisata Desa Malasari, Taman Nasional Gunung Halimun Salak. Perencanaan lanskap dilakukan dengan pendekatan bioregion dan Ecotourism Opportunity Spectrum (ECOS). Metode perencanaan lanskap didasari pada analisis karakteristik lanskap bioregion, potensi objek dan daya tarik ekowisata, spektrum peluang ekowisata, serta preferensi dan akseptibilitas masyarakat. Hasil penelitian berupa perencanaan lanskap ekowisata yang didasari lima prinsip ekowisata dengan menguntamakan kelestarian lingkungan serta memberi manfaat ekonomi bagi masyarakat. Perencanaan lanskap kawasan ekowisata Desa Malasari, Taman Nasional Gunung Halimun Salak menghasilkan rencana ruang, rencana aktivitas dan fasilitas, rencana sirkulasi dan ekowisata, serta rencana vegetasi., Indonesia has a total of 53 national park around the country. One with the greatest biodiversity in Java is Mount Halimun Salak National Park. Throughout the conservation programs, the national park has faced with some problems, such as conflict of interest between communities and the park manager due to some villagers that has been utilizing park’s territory and resources. One of the village with such conflict is Malasari Tourism Village which has high potential to be developed into ecotourism district. However, these ecotourism activities have not provided tangible benefit for local communities so the ecotourism performance needs improvement by landscape planning integrating potentials with landscape characteristics of the village to maintain its function as a national park and protected forest. The purpose of this research is to arrange a landscape planning for the ecotourism area of Malasari Village, Mount Halimun Salak National Park. Landscape planning is carried out using the bioregion approach and Ecotourism Opportunity Spectrum (ECOS) approach. The landscape planning method is based on the analysis of bioregion landscape characteristics, ecotourism objects and attractions, the spectrum of ecotourism opportunities, also the preferences and acceptability of the inhabitants and visitors. The research result is ecotourism landscape planning based on five ecotourism principles prioritizing in environmental sustainability and providing economic benefits to the community. The landscape planning of ecotourism in Malasari Village, Mount Halimun Salak National Park produces spatial plans, activity and facility plans, circulation and ecotourism plans, and vegetation plans.
Keyword: bioregion, Ecotourism Opportunity Spectrum, Ecotourism, Landscape Planning, Malasari, Mount Halimun Salak National Park, ECOS, TNGHS

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