Judul: Interaction of Social-Ecological Systems Tourism Object of Pasir Perawan Beach, Pari Island, Seribu Islands, DKI Jakarta
Abstrak: Pantai Pasir Perawan merupakan objek wisata yang terkenal di Pulau Pari. Menyeimbangkan fungsi sosial dan ekologi menjadi tantangan bagi pengelolaan kawasan tersebut. Penelitian ini bertujuan untuk mendeskripsikan dan memetakan Sistem Sosial-Ekologi yang terbangun di Pantai Pasir Perawan serta menyusun strategi pengelolaannya. Penelitian dilaksanakan pada bulan September hingga November 2023 di kawasan Pantai Pasir Perawan menggunakan pendekatan Sistem Sosial-Ekologi. Interaksi Sistem Sosial-Ekologi Pantai Pasir Perawan terbangun dari pemanfaatan pantai sebagai objek wisata. Saat ini, pengelolaan yang diterapkan belum optimal dalam mengatur aktivitas para pemanfaat sehingga berdampak negatif bagi Pantai Pasir Perawan. Strategi pengelolaan yang dapat direkomendasikan meliputi peningkatan pengawasan penggunaan sumber daya, penyuluhan dan sosialisasi tentang pentingnya menjaga ekosistem pantai kepada masyarakat dan wisatawan, serta meningkatkan koordinasi dan komunikasi antar pihak untuk menciptakan pengelolaan pantai Pasir Perawan yang berkelanjutan., Pasir Perawan Beach is the most famous tourist attraction on Pari Island. Balancing social and ecological functions poses a challenge for managing the area. This study aims to describe and map the Social-Ecological System (SES) developed at Pasir Perawan Beach and to develop management strategies. The research was conducted from September to November 2023 in the Pasir Perawan Beach area using the Social-Ecological System (SES) approach. The Social-Ecological System (SES) interactions at Pasir Perawan Beach arise from the utilization of the beach as a tourist destination. Currently, the management implemented is not yet optimal in regulating the activities of users, thus having a negative impact on Pasir Perawan Beach. Recommended management strategies may include enhancing resource usage monitoring, providing education and outreach regarding the importance of preserving the coastal ecosystem to both the community and tourists, as well as improving coordination and communication among stakeholders to establish sustainable management of Pasir Perawan Beach.
Keyword: Pari Island, Pasir Perawan Beach, Social-Ecological System

Judul: Potential Analysis of Beach Ecotourism for Ecotourism development at Perawan Beach, Pari Island, Thousand Islands
Abstrak: Pantai Perawan merupakan objek wisata yang memiliki potensi sumberdaya pantai untuk dikembangkan ke arah ekowisata. Penelitian bertujuan menentukan strategi pengelolaan berdasarkan potensi dan kesesuaian sumberdaya, daya dukung dan persepsi pengunjung ekowisata pantai pada masa pandemi Covid-19 di Pulau Pari, Kepulauan Seribu, DKI Jakarta. Penelitian dilaksanakan pada Juni 2021 hingga Maret 2022. Analisis yang digunakan yaitu indeks kesesuaian wisata, daya dukung kawasan, analisis persepsi dan analisis SWOT. Hasil penelitian menunjukkan kesesuaian wisata Pantai Perawan masuk ke dalam kategori sesuai dan sangat sesuai dengan daya dukung 20 orang/hari. Berdasarkan persepsi wisatawan, kenaikan tarif masuk pantai dapat dilakukan untuk kebutuhan peningkatan kawasan pantai. Peningkatan yang dapat dilakukan di kawasan Pantai Perawan yaitu peningkatan sarana dan prasarana, peningkatan keselamatan dan keamanan pantai serta pemeliharaan sumberdaya pantai. Strategi pengelolaan pantai yang dapat digunakan untuk pengembangan ekowisata yaitu menjadikan Pantai Perawan menjadi wisata ekslusif dengan jumlah pengunjung yang terbatas, melakukan kerjasama dengan pemerintah maupun swasta di bidang pariwisata dan konservasi, melakukan kerjasama dengan stakeholder baik pemerintah maupun masyarakat dalam pengembangan ekowisata, Perawan Beach is a tourist attraction with potential coastal to be developed for ecotourism. The research aims to determine management strategies based on the potential and suitability of resources, carrying capacity, and visitor perceptions of beach ecotourism during the COVID-19 pandemic on Pari Island, Thousand Islands, DKI Jakarta. The research was conducted between June 2021 to March 2022. The analysis used in the research is the tourism suitability index, carrying capacity, perception analysis, and SWOT analysis. The analysis's results indicate that the suitability index of Perawan Beach is in the suitable and very suitable categories, with a carrying capacity of 20 guests per day. Based on tourist perceptions, an increase in the entrance fee for the beach can be made to accommodate the need to increase the beach area. Improvements that can be made in the Virgin Beach area include improving facilities and infrastructure, increasing beach safety and security, and maintaining coastal resources. Management Strategy is obtained from SWOT analysis. Beach management strategies that can be used for ecotourism development include making Perawan Beach exclusive to tourism with a limited number of visitors, collaborating with the government and the private sector in tourism and conservation, and collaborating with stakeholders both in government and the community in developing ecotourism
Keyword: carrying capacity, ecotourism, likert analysis, perawan beach

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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