Judul: Analysis Effectiveness of Thematic Park in Fulfillment of Society's Needs in Tangerang City
Abstrak: Peran Kota Tangerang sebagai penyangga Ibukota DKI Jakarta membuat Kota Tangerang menjadi kota yang padat dengan berbagai aktivitas. Padatnya aktivitas membuat masyarakat membutuhkan suatu ruang untuk melepas lelah. Salah satu alternatif yang dapat ditawarkan yaitu Ruang Terbuka Hijau Kawasan Perkotaan (RTHKP). Kota Tangerang memiliki berbagai taman tematik yang diperuntukan sebagai RTHKP. Taman tematik yang ada perlu evaluasi efektivitasnya. Oleh karena itu, tujuan penelitian ini yaitu menganalisis kesesuaian taman tematik, persepsi dan preferensi masyarakat, efektivitas taman tematik, serta menyusun rekomendasi pengelolaan. Penilaian terdiri dari penilaian vegetasi dan tujuan pembangunan taman tematik. Penelitian ini dilakukan pada enam taman tematik di Kota Tangerang dengan menggunakan metode Key Performance Index (KPI), skala likert, dan deskriptif kualitatif. Hasil dari penelitian ini yaitu taman tematik belum sepenuhnya sesuai berdasarkan kriteria dan penilaian masyarakat. Taman tematik dinilai belum sepenuhnya efektif dalam memenuhi kebutuhan masyarakat. Rekomendasi yang diberikan yaitu penambahan, penataan, dan perawatan vegetasi dan fasilitas pada taman tematik., The role of Tangerang city as buffer city of DKI Jakarta is making this city has a busy activities. The dense of activity makes the public need a space for rest. One alternative that can be offered is the green open spaces of the urban areas. The Tangerang city has a variety of thematic parks that designed as the green spaces of the urban area. The existing of thematic parks need to be analyzed of its effectiveness. Therefore, goals of this research are analyze the suitability of thematic parks, society’s perception and preference, the effectiveness of thematic parks, and make a management reccomendations. The assessment consists of assessment of vegetation and its design goals. This research was conducted on six thematic parks in Tangerang City which using Key Performance Index (KPI), likert scale, and qualitative descriptive method. The results of this research are thematic parks has not yet completely suitable of the criteria and society’s assessment. The thematic parks has not yet completely effective in fulfillment society’s needs. The recommendation of thematic park management are addition, arrangement, and maintenance vegetations .
Keyword: park's effectiveness, society's needs, suitability, thematic park

Judul: Analysis of City Parks Ecological Function for Tangerang City Sustainability
Abstrak: Taman kota sebagai salah satu jenis ruang terbuka hijau publik memiliki peran penting dalam meningkatkan kualitas lingkungan dan mendukung keberlanjutan perkotaan. Untuk mengetahui sejauh mana implementasi fungsi ekologis, diperlukan analisis terhadap fungsi-fungsi tersebut. Penelitian ini bertujuan untuk menganalisis kesesuaian fungsi ekologis dan persepsi dan preferensi masyarakat terhadap fungsi ekologis taman kota di Kota Tangerang. Penelitian dilakukan di tiga taman yang ada di Kota Tangerang yaitu Eco Park, Taman Pramuka, dan Taman Gajah Tunggal. Metodologi penelitian terdiri dari dua metode yaitu analisis fungsi ekologis dan analisis persepsi dan preferensi masyarakat di masing-masing taman. Fungsi ekologis dianalisis dengan membandingkan kondisi eksisting dengan kriteria standar, sedangkan analisis sosial dilakukan melalui pengumpulan data menggunakan kuesioner. Hasil analisis ekologi menunjukkan bahwa Eco Park unggul dalam fungsi modifikasi suhu. Taman Pramuka memiliki vegetasi yang berfungsi baik sebagai penahan angin dan penahan erosi. Taman Gajah Tunggal memiliki fungsi peredam kebisingan terbaik. Melalui penyebaran kuisioner diketahui bahwa mayoritas masyarakat merasa puas dengan kondisi ketiga taman tersebut., Urban city parks, as a type of public green open space, play an important role in improving the quality of the urban environment and supporting urban sustainability. To determine the extent of ecological function implementation, an analysis of these aspects is necessary. This research aims to analyze the suitability of ecological functions and examine public perceptions and preferences regarding the ecological functions of city parks in Tangerang City. The study was conducted in three parks in Tangerang City, namely Eco Park, Pramuka Park, and Gajah Tunggal Park. The research methodology consists of two methods: ecological function analysis and analysis of public perceptions and preferences in each park. Ecological functions are analyzed by comparing the existing conditions with standard criteria, while social analysis is conducted through data collection using questionnaires. The results of the ecological analysis show that Eco Park excels in temperature modification function. Pramuka Park has vegetation that adequately serves as windbreak and erosion control. Gajah Tunggal Park performs the best in noise reduction function. Through the distribution of questionnaires, it was found that the majority of the community is satisfied with the conditions of all three parks.
Keyword: city park, ecological function, green open space, urban sustainability

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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