Judul: Penilaian Kriteria Green Building Aspek Sumber dan Siklus Material, Kualitas serta Kenyamanan Udara pada Gedung Andi Hakim Nasoetion Rektorat IPB.
Abstrak: Green concept bulding were a current essential issue in architectural design. Bogor Agricultural University as one of Indonesian leading university whom prioritizing environmental issue should apply green concept in its own building. The fact that none of IPB buildings were equipped with greeen building certificate namely from GBCI. The aims of this study was to assess and analyze the suitability of AHN Building of IPB Rectorate to be categorized as green building. Green building criteria assessment and analyze were performed on material source and cycle aspect, air quality and comfort all of it were based on GBCI and giving recomendation on what can be done for improvement. Assessment were performed using Greenship Rating Tools versi 1.0 created by GBCI. There are two types of data in this study which is primary and secondary data. There were eight points of assessment on material source and cycle aspect which is three points of requirements and five value points. There were nine points of assessment on air quality and comfort which is one points of requirements and eight value points. The results of the assessment showed that green building implementation on AHN building of IPB Rectorate includings air quality and comfort (IHC) was reaching 35% (7 of 20 points). The results of the assessment on material source and cycle (MRC) was reaching 25% (3 of 12 points). The total accomplishment of AHN building of IPB Rectorate was reaching 36,75% (43 of 117 points), makes it granted bronze category. Rectorate building need to evaluate and fulfil its requirement to become a green building. Some of the requirement were to complete the SOP and letter of commitment of the top management about the green building initiative.
Keyword: comfort air, GBCI, green building, material, quality air

Judul: Penilaian Kriteria Green Building Aspek Konservasi Air dan Manajemen Lingkungan Bangunan pada Gedung Andi Hakim Nasoetion Rektorat IPB.
Abstrak: The current buildings at Bogor Agricultural University (IPB) has not yet certified green building, especially of the Green Building Council Indonesia (GBCI). Therefore, the central administration office of IPB, Andi Hakim Nasoetion Building was chosen as the object of this research, which is about green building assessment. The device used as instrument of the assessment for this research is greenship existing building version 1.0, in particular categories of water vi conservation and building environment management. This research is aim to make an assessment based on the ability of the central administration office of IPB, Andi Hakim Nasoetion Building to implement the criteria of green building in GBCI’s greenship rating tools, in particular categories of water conservation and building environment management. Next goal is to give the building recommendations in order to achieve the higher rank of green building certified of GBCI on the upcoming assessment. Central administration office of IPB, Andi Hakim Nasoetion Building was built in 1995 with more or less 15322 m2. The building comprises 6 floors and is the central office for educational information in IPB. The Result of the research showed that at this time the central administration office of IPB, Andi Hakim Nasoetion Building has gain value by 25% (5 out of 20 points) for water conservation category. Whereas, in the category of building environment management, the building has gain value by 61.5% (8 out of 13 points).
Keyword: building enviroment management, GBCI, green building, greenship, water conservation

Judul: Penggunaan metode homotopi untuk menyelesaikan model populasi volterra
Abstrak: Most phenomena in nature can be explained in mathematical models. One of the mathematical models explaining population growth is Volterra equation. Volterra population equation is a nonlinear integral equation. This equation can be solved using homotopy method, which is an analytical approximation method to obtain the solution of nonlinear problems. In this paper, Volterra population model is solved using homotopy method, which gives a recursive formula to be solved using MAPLE software. The result shows that the greater approximation order we use, the wider convergence solution area will be.
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