Kudang Boro Seminar
Bogor Agricultural University (IPB)

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The Formation of Optimal Portfolio of Mutual Shares Funds using Multi-Objective Genetic Algorithm Arkeman, Yandra; Yusuf, Akhmad; Mushthofa, Mushthofa; Fitri Laxmi, Gibtha; Boro Seminar, Kudang
TELKOMNIKA Telecommunication, Computing, Electronics and Control Vol 11, No 3: September 2013
Publisher : Universitas Ahmad Dahlan

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Abstract

Investments in financial assets have become a trend in the globalization era, especially the investment in mutual fund shares. Investors who want to invest in stock mutual funds can set up an investment portfolio in order to generate a minimal risk and maximum return. In this study the authors used the Multi-Objective Genetic Algorithm Non-dominated Sorting II (MOGA NSGA-II) technique with the Markowitz portfolio principle to find the best portfolio from several mutual funds. The data used are 10 company stock mutual funds with a period of 12 months, 24 months and 36 months. The genetic algorithm parameters used are crossover probability of 0.65, mutation probability of 0.05, Generation 400 and a population numbering 20 individuals. The study produced a combination of the best portfolios for the period of 24 months with a computing time of 63,289 seconds.
Temperature Control System in Closed House for Broilers Based on ANFIS Alimuddin, .; Boro Seminar, Kudang; Made Subrata, I Dewa; Nomura, Nakao; Sumiati, .
TELKOMNIKA Telecommunication, Computing, Electronics and Control Vol 10, No 1: March 2012
Publisher : Universitas Ahmad Dahlan

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Abstract

Indonesia is a tropical country with sufficiently high ambient temperatures on broiler reaches an average daily temperature of 360C (maximum) and 320 C (minimum) data adjusted BMG Bogor. Industry poultry broiler house seeks to maintain a temperature of about 28-300C. Optimal conditions in a closed houseshould be controlled to allow optimal growth of broilers. Therefore, the required control system that is able to maintain optimum environmental conditions inside the house closed. This study aims to design an ANFIS control system for controlling the temperature inside a broiler house (closed house) for broiler. Data is collected at three different periods of the starter period (5 days): 29.50C-30.900C, a period of 25 days is a grower-29.0C 34.20C, and the finisher of 30 days is obtained 33.20C.Data 290C-processed using the approach ANFIS modeling for simulation of temperature control on closed house for broiler. Set point control simulation using the same temperature 290C for starter period (5 days), grower (25 days) and finisher (30 days). The simulation results show the output in a closed house temperature fluctuates around set point the 290C-340C.
Weed Control Decision Support System Based on Precision Agriculture Approach Sampurno, Rizky Mulya; Boro Seminar, Kudang; Suharnoto, Yuli
TELKOMNIKA Telecommunication, Computing, Electronics and Control Vol 12, No 2: June 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

Herbicides have been widely used for weed control in modern agriculture. However the use of herbicides is potentialy introducing negative impact to the environment due to excessive use of herbicides. Based on precision agriculture principles, unique and precise treatment of herbicide supply for a particular area for crop production must be performed. The objective of this research is to develop a decision support system (DSS) for schedulling of weed spraying and for selecting the proper nozzle size of the sprayers that introduce minimum negative impact to the environment. The main set of data required for our proposed system includes the set of 10 years weather data series acquired from remote sensing (NOAA and TRMM) and a set of vegetation index from MODIS EVI. The weather data set is utilized to determine the planting time period of paddy crop and to determine the proper size of the sprayers for weed spraying. Our DSS prototype has been implemented and tested with real data set in Jonggol district, West Java, Indonesia. The implementation, testing results, and future enhancement of our system are discussed in this paper.