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: Ecological Analysis Of City Parks For Sustainability In Bogor City.
Abstrak: Taman kota sebagai salah satu jenis ruang terbuka hijau publik memiliki peran penting dalam meningkatkan kualitas lingkungan perkotaan dan mendukung keberlanjutan kota. Untuk mengetahui sejauh mana pelaksanaan fungsi ekologi dan persepsi serta preferensi masyarakat perlu dilakukan evaluasi secara menyeluruh terhadap aspek-aspek tersebut. Penelitian ini bertujuan untuk mengidentifikasi vegetasi, menganalisis kesesuaian fungsi ekologis, dan menganalisis persepsi pengguna dan preferensi terhadap lanskap di setiap taman untuk kelestarian Kota Bogor. Penelitian ini berlokasi di tiga taman di Kota Bogor, yaitu Taman Heulang, Taman Sempur, dan Alun-alun Kota Bogor. Metode penelitian ini dibagi menjadi dua metode yaitu analisis fungsi ekologis dan analisis persepsi dan preferensi pengunjung pada masing-masing taman. Fungsi ekologis akan dianalisis dengan membandingkan kondisi eksisting dengan kriteria baku fungsi ekologis, sedangkan analisis persepsi dan preferensi masyarakat mengenai ekologis taman akan dianalisis dengan pengumpulan data melalui kuesioner. Hasil evaluasi ini menunjukkan bahwa Taman Heulang merupakan taman terbaik dalam hal pengurangan kebisingan, modifikasi temperatur (teduh) dan fungsi penahan angin. Taman Sempur memiliki vegetasi yang cukup baik dalam memenuhi fungsinya sebagai pengubah suhu (teduh) dan pengatur kelembaban. Alun-alun Kota Bogor merupakan taman terbaik dalam hal fungsi pengatur kelembaban udara dan cukup baik dalam fungsi penahan angin dan pengurangan kebisingan., City parks as a type of public green open space have an important role in improving the quality of the urban environment and supporting city sustainability. To find out the extent of the implementation of ecological functions and the perceptions and preferences of the community, it is necessary to carry out a comprehensive evaluation of these aspects. This research aims to identify vegetation, analyze the suitability of ecological functions, and analyze user perceptions and preferences for the landscape in each park for the sustainability of Bogor City. This research was located in three parks in Bogor City, namely Heulang Park, Sempur Park, and Bogor City Square. This research method is divided into two methods, namely ecological function analysis and analysis of visitor perceptions and preferences in each park. Ecological function will be analyzed by comparing existing conditions with standard criteria for ecological function, while analysis of community perceptions and preferences regarding park ecology will be analyzed by collecting data through questionnaires. The results of this evaluation show that Heulang Park is the best park in terms of noise reduction, temperature modification (shade) and wind barrier function. Sempur Park has vegetation that is quite good at fulfilling its function as a temperature changer (shade) and humidity regulator. Bogor City Square is the best park in terms of air humidity control function and quite good in terms of wind barrier and noise reduction functions.
Keyword: Analysis, City Park, Ecological Function, Green Open Space, Perception and Preference

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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