Judul: Determination of footprint area model using body weight and height as prediction parameters
Abstrak: Prediksi ketenggelaman roda merupakan hal penting untuk diperhitungkan dalam studi kinerja sebuah kendaraan off-road yang beroperasi pada suatu lahan agar tercapai efisiensi dan efektifitas kinerja kendaraan. Hal tersebut seyogyanya dapat diukur dengan alat/metode yang sederhana seperti ketenggelaman telapak kaki agar petani lebih mudah dan cepat dalam memprediksi ketenggelaman roda kendaraannya. Parameter yang diperlukan untuk memprediksi ketenggelaman telapak kaki adalah berat badan dan luasan telapak kaki, sedangkan untuk memprediksi luasan telapak kaki diperlukan parameter berat dan tinggi badan. Penelitian ini bertujuan untuk membuat model luasan telapak kaki (A) subjek laki-laki dan perempuan dengan parameter berat badan (W) dan tinggi badan (H).
Keyword: sinkage, human foot sinkage, footprint area model

Judul: Pendugaan Kedalaman Tekan Roda Traktor Roda Empat Berbasis Uji Kedalaman Tekan Telapak Kaki Manusia
Abstrak: Load of a tractor on certain terrain condition may cause sinkage, which results motion resistance on its four wheels. This motion resistance reduces its mobility and decreasing work capacity. This research was aimed to predict the sinkage of a fourwheel tractor based on human footprint approximation. The parameters examined for the sinkage prediction were pressure and the physical properties of soil. Based on the observations, water content can be used as representative of other soil properties. Through linear regression analysis, some equation models for predicting human footprint and tractor sinkage were obtained. The equation models employed water content and normal pressure as the independent variables. Those models were then compared with the observed tractor’s sinkage to find the best fitted model. Equation model zkskid = 12.804 - 0.275(ka) + 6.56(P) through male subject and zkdkab = 18.028 - 0.262(ka) - 7.304(P) through female subject were the best fitted model that can be used for sinkage prediction of four-wheel tractors.
Keyword: soil, equation model, sinkage, footprint, tractor, Bogor Agricultural University (IPB)

Judul: Synthesis of Molybdenum Trioxide (MoO3) by Electrochemical Method for Electrochromics Application
Abstrak: Molybdenum trioxide (MoO3) thin films have been deposited on glass substrates by electrochemical method using ammonium heptamolybdate tetrahydrate ((NH4)6Mo7O244H2O). The films were deposited onto glass substrates as the control temperature at 25○C and annealing treatment at 350○C for 30 mins. The MoO3 thin films were investigated by UV-Vis, X-ray diffraction techniques (XRD), Scanning Electron Microscopy (SEM). The JCPDS card show that orthorhombic MoO3 (α- phase) has been formed. Molybdenum trioxide MoO3 formation was also confirmed by JCPDS card no. 35-0609. The SEM photographs revealed that the spherical and rod-like morphology and their grains size increased with increasing of heating temperatures. The measurement results show that the MoO3 thin film prepared at 350°C transmited about 80% of the visible spectrum. The effect of different heat treatments on surface morphology, thickness and optical properties of the films are discussed in this thesis.
Keyword: Institut Pertanian Bogor, Bogor Agricultural University, IPB, Electrophoretics, electrodeposide, electrochromics, electrochromic materials, electrochromic mechanism