Judul: GREENSHIP ASSESSMENT AT JAKARTA INTERCULTURAL SCHOOL (JIS) PATTIMURA CAMPUS, SOUTH JAKARAT
Abstrak: Bangunan memiliki dampak yang signifikan terhadap lingkungan, sehingga diperlukan alat penilaian peringkat keberlanjutan yang dapat membantu menilai kinerja bangunan. Green building adalah metode ramah lingkungan untuk meningkatkan efisiensi sumber daya di seluruh siklus hidup bangunan mulai dari desain, konstruksi, pemeliharaan, renovasi, dan pembongkaran. Green building Council Indonesia (GBC Indonesia) telah mengembangkan alat penilaian greenship yang terdiri atas net zero healthy, new building, existing building, interior space, homes, dan neighborhood. Dalam penelitian ini menggunakan greenship neighborhood versi 1.0 dan greenship new building versi 1.2. Penelitian ini dilakukan di Jakarta Intercultural School (JIS) Kampus Pattimura dikarenakan sekolah tersebut telah melakukan perencanaan pada kawasan dan gedung redevelopment. Hasil penilaian neighborhood versi 1.0 pada kawasan perencanaan memperoleh nilai 55 poin dan penilaian new building versi 1.2 pada perencanaan gedung redevelopment mencapai nilai 20 poin, yang masih dibawah nilai peringkat greenship., Buildings have a significant impact on the environment, so there is a need for sustainability rating assessment tools that can help assess the performance of buildings. Green building is an environmentally friendly method to promote resource efficiency throughout the life cycle of a building's from design to, construction, maintenance, renovation, and demolition. The Green Building Council Indonesia (GBC Indonesia) has developed a greenship assessment tool that covers net zero health, new building, existing building, interior space, homes, and neighborhood. Version 1.2 of greenship new building and version 1.0 of greenship neighborhood are used in this study. The study was conducted at the Jakarta Intercultural School (JIS) Pattimura Campus because the planning for the redevelopment area and building was conducted there. The results of the neighborhood assessment version 1.0. in the planning area obtained a value of 55 points and the new building assessment version 1.2 in the planning of the redevelopment building reached a value of 20 points, which is still below the standard value of greenship assessment
Keyword: green building, GBC Indonesia, greenship, Jakarta Intercultural School (JIS) Pattimura Campus

Judul: Study Analysis Greenship New Building Version 1.2 and Version 2.0. A Case Study of Design Building AM Satari IPB Bogor
Abstrak: Perubahan iklim menjadi salah satu masalah lingkungan yang mendapat perhatian di setiap negara. Pencegahan dampak lebih buruk dengan mengubah industri-industri untuk lebih ramah lingkungan. Industri konstruksi melakukan upaya pencegahan dengan konsep green building. Bangunan hijau adalah bangunan gedung dengan konsep tata letak, sistem-sistem bekerja secara efisien memanfaatkan energi, sirkulasi udara yang baik, desain interior yang nyaman dan perawatan gedung dapat dilakukan secara berkelanjutan. Konstruksi bangunan hijau di Indonesia hanya bisa disertifikasi greenship new building versi 1.2 yang dikeluarkan oleh Green Building Council Indonesia (GBCI) pada tahun 2012. Penelitian ini berkaitan dengan kajian greenship new building yang mengalami pengembangan menjadi lebih terperinci dari versi 1.2 menjadi versi 2.0 pada tahun 2019. Selain itu, agar dapat diketahui besaran pengaruh dari pengembangan dilakukan asesmen pada desain “Gedung AM Satari IPB Bogor”. Adapun, penelitian ini menggunakan metode pembanding dan kualitatif dalam pembahasan poin-poin penilaian dalam greenship new building. Hasil dari penelitian menjelaskan ada penambahan poin kriteria penilaian dengan 2%-3% bobot nilai bertambah dari kriteria sebelumnya. Selain itu, dalam kajian penilaian yang diterapkan pada “Gedung AM Satari IPB Bogor” didapatkan peringkat silver dalam kedua versi karena nilai 56,43% pada versi 1.2 dan mengalami penurunan pada versi 2.0 menjadi 53,03%., Climate change is a problem that becomes an environmental issue in every government. Prevention of worse impacts by changing industries to be more environmentally friendly.The construction industry makes efforts to prevent it with the concept of green building. Green building are buildings with a layout concept, system work efficiently utilizing energy, good air circulation, comfortable interior design and sustainable maintenance. Green building construction in Indonesia can only be certified greenship new building version 1.2 issued by Green Building Council Indonesia (GBCI) in 2012. This research relates to the study of the grenship new building which underwent a more detailed development from greenship new building version 1.2 to version 2.0 in 2019 and an assessment was carried out on the design of the IPB Lecture Building. Meanwhile, this study uses comparative and qualitative methods in discussing assessment points in greenship new building. The results of the study explained that there were additional points for the assessment criteria with 2%-3% weighted values increased from the previous criteria. In addition, the assessment study that was applied to the IPB lecture building obtained a silver rating in both versions because the score was 56,43% in version 1.2 and decreased in version 2.0 to 53,03%.
Keyword: green building, green construction, global warming

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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