Judul: Studi Perbandingan Analisis Biaya Pekerjaan Struktur Beton Metode AHSP dan Penawaran Kontraktor.
Abstrak: Cost analysis is a basic in a project Budget Plan Estimates (BPE). The analysis has to be done carefully and thoroughly so that the project do not get losses. The goal of this research is 1) to know about the differences in concrete structure works cost analysis between AHSP and contractor method, 2) to know about unit price of works that has the most significant differences, and 3) analyzing works that has the most significant cost differences. The works that has the most significant unit price difference will be traced in the coefficient and unit price calculation. Materials used of this research is secondary datas from a project and AHSP guidelines. This study results shows that the highest percentage unit price difference is the pile work which is 50.85% and tie beam TB2 which is 50.07%. The smallest percentage unit price difference is the entrance concrete slab and first floor roof slab which is 18.16% and 20.36%. In AHSP calculation consist of indirect costs which added 15% from the direct costs. The differences of the calculation between AHSP and contractor are most because of experience and information of a different reference standard.
Keyword: Bogor Agricultural University (IPB), building project, unit price, coefficient analysis, AHSP

Judul: Efficiency Improvement in multi-story building construction with BIM 5D Application
Abstrak: Sebagian besar perusahaan konstruksi di Indonesia saat ini masih menggunakan aplikasi konvensional yang dilakukan secara terpisah. Akibat yang sering ditemukan dari penggunaan aplikasi konvensional terfragmentasi antara lain adanya limbah konstruksi dan keterlambatan informasi yang menyebabkan inefisiensi biaya dan waktu. Oleh karena itu, dibutuhkan suatu sistem integrasi yang dapat menjawab permasalahan tersebut. Salah satu teknologi yang telah muncul untuk menjawab permasalahan adalah Building Information Modeling (BIM). Penelitian ini dilakukan dengan simulasi pemodelan dan perhitungan untuk mengevaluasi akurasi dan efisiensi biaya pada pekerjaan besi dan beton menggunakan BIM 5D dengan aplikasi Cubicost dibandingkan dengan aplikasi konvensional. Simulasi proyek dilakukan pada apartment 16 lantai. Hasil penelitian ini menunjukkan penggunaan aplikasi BIM 5D dapat mengurangi biaya tenaga kerja sebesar Rp171.989.939,00 atau menghemat 6.33%. Nilai efisiensi volume pekerjaan beton untuk elemen kolom, balok, dan pelat masing-masing sebesar 10,87%, -2,60%, dan 10,80%. Sedangkan nilai efisiensi volume pekerjaan besi tulangan untuk elemen kolom, balok, dan pelat sebesar 2,64%, -2,31%, dan 23,43%. Total efisiensi biaya yang didapatkan sebesar Rp427.920.149,00. Biaya tersebut sangat besar dibandingkan biaya investasi aplikasi BIM 5D seharga Rp127.000.000,00., Most construction companies in Indonesia currently still use conventional applications that are carried out separately. The consequences that are often found from the use of fragmented conventional applications include construction waste and delays in the information that cause cost and time inefficiencies. Therefore, an integrated system is needed to answer these problems. One technology that has emerged to answer these problems is Building Information Modeling (BIM). This research was conducted by modeling simulations and calculations to evaluate the accuracy and cost-efficiency of using the BIM 5D application compared to conventional methods in rebar and concrete work. The project simulation was carried out on a 16-floor apartment. As a result, the use of the BIM 5D application can reduce labor costs by Rp171,989,939.00 or save 6.33%. The volume efficiency values of concrete work for column, beam, and slab elements are 10.87%, -2.60%, and 10.80%, respectively. Meanwhile, the volume efficiency values of rebar for column, beam, and slab elements are 2.64%, -2.31%, and 23.43%. The total cost-efficiency obtained is Rp427,920,000.00. This cost is huge compared to the investment cost of the BIM 5D application for Rp127,000,000.00.
Keyword: Aplikasi BIM 5D, Building Information Modeling, Efisiensi Biaya

Judul: Etno-ornitologi Burung Kancilan Flores (Pachycephala nudigula nudigula Hartert 1897) pada Masyarakat Lio di Taman Nasional Kelimutu
Abstrak: Bare-throathed whistler is one of several wild birds in Kelimutu National Park (TNKL) that is believed to have correlation with Lio Community‟s belief. The estimation of Bare-throated whistler‟s population in Kelimutu National Park was about 186.41-1668.07 individual by the density about 0.0389-0.3481 ind/ha with the sex ratio 6.2:1 that spreaded on area with height of 1100 – 1600 masl. The characteristic of Bare-throated whistler‟s habitat is a natural forest with various canopy level, high plant species diversity and high density. The habitat characteristics related to the availability of food in the form of insects, cover, safety and a nesting site. Generally the most of Lio community knew the existence of Bare-throated whistler directly or from their parents‟ stories. The perceptions of Lio Community to the Bare-throated whistler‟s existence is generally support the conservation efforts. The perceptions construct the Lio Community‟s atitude that tend to be conservative to the existence of Bare-throated whistler. The attitude shown by their behavior that not cathing the Bare-throated whistler from the TNKL‟s area or the outside. The attitude have an important role to the existence of Bare-throated whistler in Kelimutu National Park‟s area.
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