Judul: Analysis of Ecological, Social Conditions and Perceptions of Small Island Tourism: Case Study of Pari Island, DKI Jakarta
Abstrak: Indonesia adalah negara kepulauan dengan kurang lebih 16.771 pulau. Pulau Pari adalah pulau di bagian selatan dari perairan Kepulauan Seribu dengan jumlah wisatawan yang berkunjung pada tahun 2021 mencapai 30.531 orang. Penelitian ini bertujuan menilai kondisi ekologi dan sosial Pulau Pari sebagai pulau wisata dan menganalisis hubungan persepsi wisatawan terhadap kondisi lingkungan untuk wisata di pulau tersebut. Jenis data yang digunakan dalam penelitian ini adalah data primer dan sekunder. Data sekunder diperoleh untuk mengetahui kondisi ekologi dan sosial. Data primer diperoleh untuk mengetahui persepsi wisatawan. Data primer diperoleh dengan cara membagikan kuesioner kepada wisatawan. Hasil penelitian menunjukkan bahwa kondisi terumbu karang dan hutan mangrove yang berada di Pulau Pari mengalami penurunan setiap tahunnya sedangkan kondisi padang lamun di pulau tersebut menunjukkan hasil yang stabil. Nilai korelasi antara kepentingan aktivitas dan kepuasan wisatawan terhadap kondisi lingkungan menunjukkan korelasi positif yakni berturut-turut sebesar 0.845 dan 0.888. Hal tersebut berarti bahwa semakin tinggi kepentingan dan kepuasan wisatawan maka semakin tinggi kualitas lingkungan di Pulau Pari, ndonesia is the largest archipelago with approximately 16,771 islands. Pari Island is an island located in the southern part of the Thousand Islands waters with the number of tourists visiting the island in 2021 reaching 30,531 people. This study aims to assess the ecological and social conditions of Pari Island as a tourist island and analyze the relationship between tourist perceptions of environmental conditions for tourism on the island. The types of data used in this study are primary and secondary data. Secondary data were obtained to determine ecological and social conditions. Primary data were obtained to determine tourist perceptions. Primary data were obtained by distributing questionnaires to tourists. The results showed that the condition of coral reefs and mangrove forests located on Pari Island has decreased every year while the condition of seagrass beds on the island shows stable results. The correlation value between activity interests and tourist satisfaction with environmental conditions shows a positive correlation of 0.845 and 0.888, respectively. This means that the higher the importance and satisfaction of tourists, the higher the environmental quality on Pari Island
Keyword: Ecology, Pari Island, Social, Tourists

Judul: Analisis Ekonomi dan Daya Dukung Pengembangan Ekowisata Pulau Pari Kepulauan Seribu, Jakarta
Abstrak: Pari Island wich is known as research and conservation area of coral reefs by P2O LIPI, now also developed as a natural tourism area. One of the purposes of tourism development in Pari Island is to increase local economy. Most of the local people in Pari Island work in fisheries sector which now face a fish stock depletion due to the overfishing problem. Thus the tourism sector is expected to contribute to the local community income. This study was conducted to calculate the carrying capacity of Pari Island for beach and snorkeling activities, estimating the economic value of tourism in Pari Island, and the contribution of the tourism sector to local community income. Based on calculation, the value of tourism suitability index and carrying capacity of the location are in the category suitable. The economic value of tourism in Pari Island are estimated using individual travel cost method and show the results Rp 152.627.300.000,00/year. The existence of the tourism sector in Pari Island also contributed 70,12 percent to local community income. The number of economic value and tourism contribution to the local community income are indirectly indicate that tourism sector in Pari Island is important for society and the environment. Thus, tourist activity in Pari Island can be developed with limit of environmental carrying capacity.
Keyword: sustainable tourism, tourism contribution, the economic value of tourism, the environmental carrying capacity, Pari Island

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.
Keyword: