Judul: Lalat Penghisap darah (Haematobia exigua de Meijere, 1903) pada  Sapi Sumba Ongole dan Musuh Alaminya.
Abstrak: Penelitian ini bertujuan untuk mengetahui jenis lalat yang dominan penghisap darah pada peternakan sapi Sumba Ongole dm mencari solusi dalam pengendaliannya, terutama pengendalian yang berhubungan dengan musuh alami lalat tersebut.
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Judul: Identifikasi Lalat Sumba (Hippobosca sp.) pada Sapi Perah di Kawasan Usaha Peternakan Sapi Perah Cibungbulang Kabupaten Bogor
Abstrak: This research was aimed to identify and to understand the aspect of bioecology of Sumba flies (Hippobosca sp.) at dairy cows in Dairy Farming Area Cibungbulang Bogor District. The research was conducted from May 2011 to April 2012 and performed in three steps, collecting the of ectoparasites, processing specimens, and identification of ectoparasites. The ectoparasites collected were processed by pinning method. Then ectoparasites were identify by using the key method of Soulsby (1982). The result showed that the sumba flies species infested in dairy cows was Hippobosca equina. The pupae of this fly was put in the corner or crevices of the iron pole in the cowshed. Actually H. equina was the species of dry and hot areas, however, its can adapt and breed in wet and humid areas such as Cibungbulang Bogor District.
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Judul: The Effects of Variance of Interest rate to Variance of Annuity Future Values
Abstrak: Time value of money is a concept that refers to the difference of the value of money due to time difference. The value of money for present time would not be the same as the value of money in the future. The value of money for present time is called as Present Value (PV) of the money and the value of money for future time is called Future Value (FV) of the money. Determination the value of money, for present and future time, depends on the time and rate of return. The value of money is determined by several factors such as inflation, fluctuation of interest rates, and government policy in securities and taxation. Due to fluctuation of the value of money we need a FV formulation, it is useful for knowing whether an investment can be profitable or not, and this information is useful also in budget analysis. Annuity is defined as a series of payments made for a specific period. The payment, fixed or varied, can be made at the beginning or at the end of the period. Annuity paid at the beginning of the period is called annuity-due and annuity paid at the end of the period is called immediate annuity-certain. The accumulated value of the annuity after few years later is called as a final value or a future value. Burnecki et al. (2003) have discussed about the FV of a fixed-rate annuity in which payments are made according to the arithmetic or geometric series. They have also examined FV for annuities in which payments are made according to arithmetic or geometric series with random rates of interest. This paper examines FV for annuity-due in which payments are made according to arithmetic or geometric series with interest rates as a random variable, which is normal distribution ,  . Future value formula is expressed in recursive form. FV for annuity-due which payments are made according to the arithmetic or geometric series with random rates of interest is calculated by theoretical way and simulation way. The random rates of interest is denoted as k k i  i  , where k i an independent random variable; i is a constant and k  is a random variable which has normal distribution ,  . By using the determined parameters, a sequence of random rates of interest are generated for theoretical calculation. Meanwhile for the simulation, the random rates of interest is generated 1000 times for the simulation. The generated data give mean value, variance, and standard deviation. Moreover, error of mean value, variance, and standard deviation from the theoretical and simulation results are calculated. Error calculation uses Symmetric Mean Absolute Percentage Error (SMAPE). The smaller the value of SMAPE is the more accurate the simulation. The interest rate variances are varied from 0.000036 to 0.0001 to study the relationship between variance of rates of interest and variance of future value. The theoretical and simulation results show that when the variance of random rates of interest increases, then the variance of FV increases linearly. FV of the annuity-due in
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