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SEQUENTIAL EXTENDED KALMAN FILTER ON EEG EXTRACTION AND CLASSIFICATION Turnip, Arjon; Soetraprawata, Demi; Hariyadi, -; Kusumandari, Dwi Esti
Teknologi Indonesia Vol 36, No 1 (2013)
Publisher : LIPI Press

In this paper, a neural networks training based on Sequential Extended Kalman Filtering (SEKF) analysis for extraction and classifi cation of recorded EEG signal is proposed to improved feature extraction, classifi cation accuracy,and communication rate as well. The robustness of the SEKF against background noises has been evaluated by comparing the separation performance indices of the SEKF with well known algorithms (i.e., BPNN, JADE,and SOBI). A statistically signifi cant improvement was achieved with respect to the rates provided by raw data.

ANALISIS HASIL UJI TERAP ALAT PENGHEMAT BBM ELECTRIC FUEL TREATMENT PADA ENGINE DIESEL GENSET 35 KVA DENGAN BEBAN STATIS Hariyadi, -; Sugiono, -; Fakhrurroja, Hanif; Tanu, Edy
Teknologi Indonesia Vol 34 (2011)
Publisher : LIPI Press

This paper describe fi eld test results analysis for fuel saving tool called Electic Fuel Treatment (EFT) on diesel engine generator set 35 KVA with static load. Field test on diesel engine generator set was performed with a variety of confi gurations EFT in series or parallel to get the best fuel effi ciency. Methods of analysis done bythe operational technical tests by comparing the results of testing before and after installation of EFT. Field test results are a form of EFT confi gurations that is ideal to obtain fuel effi ciency on average of 6.58% at 60% load and exhaust emission reduction levels between 20%24%.

DESIGN OF AN ADAPTIVE INTELLIGENT CONTROLLER IN A SEMI-ACTIVE SUSPENSION SYSTEMS Turnip, Arjon; Soetraprawata, Demi; Hariyadi, -; Kusumandari, Dwi Esti
Teknologi Indonesia Vol 36, No 1 (2013)
Publisher : LIPI Press

In this paper, a semi-active control law consists of two tuneable parameters that are given as the function of the running conditions of the vehicle and an adaptive intelligent controller (AIC) is proposed to obtain the best compromise among confl icting performance indices pertaining to the vehicle suspension system. The proposed AIC method is developed based on the frequency regions. The obtained result indicates that a semi-active suspension system based AIC has a signifi cant potential in improving the ride comfort and the road holding.

Nilai Pendidikan Karakter Kerja Keras dalam Novel Tentang Kamu Karya Tere Liye Sulastri, Saptiana; Hariyadi, -; Simarmata, Mai Yuliastri
Jurnal Penelitian dan Pengembangan Sains dan Humaniora Vol 4, No 1 (2020): April
Publisher : Universitas Pendidikan Ganesha

This study aims to describe the value of hard work character education in the novel About You Work Tere Liye. Research using descriptive methods with qualitative forms. data collection techniques using documentary studies. Data collection tool in this study is the researcher himself as a key instrument (human instrument) assisted with other data collection tools namely data recording cards. Data analysis techniques in this study used content study techniques. Based on the analysis, the value of hard work character education includes hard work in the family, hard work for yourself, and hard work in working.

Nilai Pendidikan Karakter Kerja Keras dalam Novel Tentang Kamu Karya Tere Liye Sulastri, Saptiana; Hariyadi, -; Simarmata, Mai Yuliastri
Jurnal Penelitian dan Pengembangan Sains dan Humaniora Vol. 4 No. 1 (2020): April
Publisher : Universitas Pendidikan Ganesha

This study aims to describe the value of hard work character education in the novel About You Work Tere Liye. Research using descriptive methods with qualitative forms. data collection techniques using documentary studies. Data collection tool in this study is the researcher himself as a key instrument (human instrument) assisted with other data collection tools namely data recording cards. Data analysis techniques in this study used content study techniques. Based on the analysis, the value of hard work character education includes hard work in the family, hard work for yourself, and hard work in working.

Optimasi Dosis Pupuk Organik dan NPK Majemuk pada Tanaman Kelapa Sawit Belum Menghasilkan Siallagan, Irwan; ,, Sudradjat; ,, Hariyadi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 2 (2014): Jurnal agronomi indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTOptimum fertilization is not only proposed for obtaining desireable quality and quantity of the plant, but also to avoid excess fertilizer causing toxicity and environmental damage. The objective of this research was to study and to determine an optimum rate of organic and NPK compound fertilizers for immature oil palm. The experiment was carried out at IPB-Cargill Oil palm Teaching Farm, Jonggol, from March 2013 to March 2014. The treatments was laid out in a factorial randomized complete block design with three replications. The first factor was organic fertilizer, i.e. 0, 15, 30 and 45 kg organic fertilizer plant-1, and the second was NPK compound fertilizer, i.e. 0, 0.65, 1.3, 1.95 and 2.6 kg NPK compound fertilizer plant-1. The result showed that vegetative growth increases with fertilizer application. The height and stem girth of plant were significantly affected by interaction between organic and NPK compound fertilizers, however there was no significant effect on frond production, frond length and leaf area. N, P leaf content of plant were affected by interaction between organic and NPK compound fertilizers, however there was no effect on K leaf content, chlorophyll and number of stomata. Based on the height and stem girth regression equation, the optimum recommendation rate of organic and NPK compound fertilizers for immature first year oil palm are 40.7 kg organic fertilizer plant-1 and 1.9 kg NPK compound plant-1 Keywords: inorganic fertilizers, nutrient level, stem girth, vegetative growth

Pemanfaatan Limbah Kulit Biji Mete sebagai Pupuk Organik untuk Meningkatkan Pertumbuhan Bibit Tanaman Mete Sakinah, Nur; Djoefrie, Mochamad Hasjim Bintoro; ,, Hariyadi; Manohara, Dyah
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 3 (2014): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTCashew nut shells have not been fully utilized untill recently, and most of them are still in a form of wastes. Cashew nut shell wastes are organic matter containing macro elements that are useful for plants, such as N (0.84%), P (0.21%), K (0.70%), Ca (0.13%) and Mg (0.24%) that are useful for plants. Cashew nut shell wastes would be very potential if they were composted into organic fertilizers. The aim of this research was to analyze the effect of cashew nut shell compost formula application on growth and nutrient uptake of cashew seedlings. The research was conducted at IPB Teaching Farm Dramaga Bogor from November 2012 to May 2013. The experiment was arranged in randomized complete block design with 5 treatments and 3 replications. The results showed, that cashew nut shell compost formula application at 50 g polybag-1 and 100 g polybag-1 were significantly increased plant height, leaf number, stem diameter, roots length, fresh weight, dry weight of seedling, and N, P, K uptake at 3 months after planting (MAP) compared to no compost (top soil). The treatment of cashew nut shell compost formula at 50 g polybag-1 showed not significantly compared with goat manure at 100 g polybag-1 on the plant height, stem diameter, leaf number, roots length and N, P, K uptake at 3 MAP. Both of the treatment can improve the balance of nutrients in the soil thus enhancing the growth and vigor of cashew seedling. The treatment of cashew nut shell compost formula (50 g polybag-1) could replace the treatment of goat manure (100 g polibag-1) tended to increase cashew seedling growth.Keywords: A. occidentale L., bioactivator, cashew seedling, KBM compost

Pengaruh Pemangkasan Batang dan Cabang Primer terhadap Laju Fotosintesis dan Produksi Jarak Pagar (Jatropha curcas L.) ,, Hariyadi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 3 (2011): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was aimed to study the effect of stem and primary branch prunning on photosynthetic rate and production of physic nut. The experiment was conducted in IPB experimental station in Cikabayan, Darmaga, Bogor, from February 2007 until May 2008. A randomized block design with one factor was used in the experiment. The treatments were combination between stem pruning with various height from the soil surface and pruning of primary branches with various number of branch remained. Stem pruning on 40 cm above the soil surface with no branch pruning resulted in the highest photosynthetic rate (8.10 µmol CO2 m-2 s-1), while stem pruning on 20 cm above the soil surface with 2 primary branches remained resulted in the lowest photosynthetic rate (4.71 µmol CO2 m-2 s-1). Stem pruning on 40 cm above the soil surface without branch pruning produced the highest yield components, i.e., capsul number (207.3 capsul plant-1), seed number (506 seeds plant-1) and seed dry weight (323.81 g plant-1). Keywords: photosynthetic rate, production, stem prunning

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