Gorontalo, Indonesia
Gorontalo, Indonesia

State University of Gorontalo is a state university in Gorontalo, Indonesia, that was established on 1 September 1963. At first the university was a junior college and part of Guidance and Counseling UNSULUTENG . In 1964 its status changed to Guidance and Counseling Branch IKIP Yogyakarta at Manado. In 1965 it joined the Teachers Training College branch in Manado Gorontalo.In 1982 the institution became one of the faculties of the Sam Ratulangi University Manado with the name of the Faculty of Teacher Training and Education UNSRAT Manado, Gorontalo. The institute was officially established in 1993 under the name College of Teacher Training and Education Gorontalo.In 2001 the institution was upgraded to State Teachers' Training College Gorontalo with five faculties and 25 study programs. On June 23, 2004, President Megawati inaugurated the State University of Gorontalo. Wikipedia.

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Manda R.,State University of Gorontalo | Nurlaila H.,State University of Gorontalo | Indri W.B.,State University of Gorontalo
IOP Conference Series: Materials Science and Engineering | Year: 2017

English Intensive course (IC) program is aim to prepare students in receiving high-level English material in the next semester. The material in IC textbook consist of 4 language skills (reading, writing, listening, speaking), grammar, vocabulary and pronounce. Although with 4 credits per day and 3 session a week, students ability in English was still unsatisfactory. This research aim to develop a Web-Based Computer-Assisted Language Learning (WBCALL) as a learning media that complements IC textbook, so it could increase student motivation to learn English and to support the creation of more pleasant learning atmosphere. WBCALL application that have been developed is the type of "Do what I tell you" application, which is an application that controls the students activities in drills, exercises, quizzes, and tests, and then the application will notify the answer is correct or incorrect. This application contains 7 main themes with 4 language skill. The trial result of WBCALL application to English department students showed that the use of WBCALL application in learning IC is very useful and helpful in understanding the material, because the presence of WBCALL application, students could learn IC material both inside and outside the classroom, so that could impact on increasing students motivation in IC learning. © Published under licence by IOP Publishing Ltd.

Roviana D.,State University of Gorontalo | Tajuddin A.,State University of Gorontalo | Edi S.,State University of Gorontalo
IOP Conference Series: Materials Science and Engineering | Year: 2017

Mining potential in Indonesian is very abundant, ranging from Sabang to Marauke. Kabupaten Gorontalo is one of many places in Indonesia that have different types of minerals and natural resources that can be found in every district. The abundant of mining potential must be balanced with good management and ease of getting information by investors. The current issue is, (1) ways of presenting data/information about potential mines area is still manually (the maps that already capture from satellite image, then printed and attached to information board in the office) it caused the difficulties of getting information; (2) the high cost of maps printing; (3) the difficulties of regency leader (bupati) to obtain information for strategic decision making about mining potential. The goal of this research is to build a model of Geographical Information System that could provide data management of potential mines, so that the investors could easily get information according to their needs. To achieve that goal Research and Development method is used. The result of this research, is a model of Geographical Information System that implemented in an application to presenting data management of mines. © Published under licence by IOP Publishing Ltd.

Jahja M.,Max Planck Institute for Polymer Research | Jahja M.,State University of Gorontalo | Bubeck C.,Max Planck Institute for Polymer Research
Journal of Nonlinear Optical Physics and Materials | Year: 2010

We prepared thin films of the conjugated polymer poly(3-butylthiophene) by spin-coating and performed transmission and reflection spectroscopy to characterize the dispersion of linear refractive index and absorption coefficient at in-plane polarization. Slab waveguides of this regiorandom polythiophene derivative have mode propagation losses smaller than 1 dB/cm at wavelengths larger than 1000 nm. We determined the nonlinear refractive index and two-photon absorption of slab waveguides by means of intensity-dependent prism coupling using picosecond laser pulses in the range 700-1300 nm. These data yield the dispersion of the figures of merit, which appear promising for all-optical waveguide switching at wavelengths larger than 1200 nm. © 2010 World Scientific Publishing Company.

Rumape O.,State University of Gorontalo
International Journal of ChemTech Research | Year: 2014

Castor leaves (Ricinus communis L) of 2013 grams that are taken from residential areas in the Huangobotu Village, West City District, Gorontalo City, are mashed in a blender, and macerated for 3 × 24 hours using 3 L of methanol and it obtains crude extracts of 164, 67 grams. The results of the leaf crude extract as much as 35 gr are partitioned with ethyl acetate and n-hexane to obtain 6.67 g of ethyl acetate fraction, n-hexane fraction of 7.37 grams and 9 grams of methanol extract. Three fractions that represent the level of polarity (i.e., non-polar fraction n-hexane, ethyl acetate fraction of semipolar and polar fraction of methanol extract), are tested the bioassay on the larvae of Epilachna varivestis Antifeedant. Antifeedant activity test results obtains the methanol extract that shows the highest Antifeedant activity (67%) followed by n-hexane fraction (66%), and ethyl acetate fraction (62%). The isolation process of methanol extract is done and then purified by column chromatography and thin layer chromatography. The column process is performed up to two times. The first column obtains three fractions, i.e. leaf fraction 1 (the result of fraction D1 = 7.15 grams), leaf fraction 2 (the result fraction D2 = 1.07 g) and the fraction of leaf 3 (the result of fraction D3 = 1.4 grams). From the test results of Antifeedant activity of the obtained three fractions, the fraction D1 shows the highest inhibitory activity (fraction D1 = 68%, fraction D2 = 51%, and fraction D3 = 52%); these three fractions are further tested by TLC and fractions D1 shows two spots, so it must be in column again. The second columning uses n-hexane eluent: ethyl acetate obtained two fractions: D1.1 (4.05 g) and D1.2 (2.16 g). D1.1 fraction is tested with TLC and shows a single stain. Then to ensure the result, the two-dimension TLC test is done again and it shows the single stain also. At the antifeedant testing activity (inhibition of eating), the fraction D1.1 gives higher Antifeedant (D1.1 = 71%) while the Fractions D1.2 only gives antifeedant (D1.2 = 53%). The results of the analysis and identification of the IR is known that the castor leaf contains compound which has a functional group O-H, C-H, C=O, C=C, C-O cyclic and =C-H. The 1RMI 1H dan RMI 13C test on leaf isolates find the compounds of triterpenoids group. © 2014-2015, Sphinx Knowledge House. All rights reserved.

Rieny Sulistijowati S.,State University of Gorontalo | Mile L.,State University of Gorontalo
International Journal of Bio-Science and Bio-Technology | Year: 2016

The research aimed to identify the lacted acid bacteria from intestinal of milkfish (Chanos chanos) potential acvity pathogen anbacteria used PCR 18s Rrna Methode. The lactic acid bacteria were isolated using selective media MRS agar for lactic acid bacteria. Identification isolates PCR 18S rRNA and sequencing method that are DNA isolation, DNA amplification use PCR, DNA visualizasion from amplification with electroforesis, Basic Local Alignment Search Tool (BLAST) and Tree view program. In view of PCR analysis and tree view program, LAB is Lactobacillus acidophilus strain ATTC 4796. © 2016 SERSC.

Musa W.,State University of Gorontalo
ARPN Journal of Engineering and Applied Sciences | Year: 2016

In this paper, we would investigate a hybrid modern and classical algorithm (HMCA) in parameter optimization of electricity demand forecasting. Genetic algorithm (GA) has been successfully applied in optimization problems. As a modern algorithm, GA has a capability to explore the solutions in the global search area, but its drawback is the slow rate of convergence and high number of iterations. The Nelder-Mead is one of the classical algorithms using simplex search methods. This technique, when combining with a modern algorithm can be used for faster optimization processing. The test performance of the hybrid algorithm model (HAM) is conducted using data for Indonesian electricity demand. Results have shown that HMCA is better than GA in term of accuracy and number of iterations. © 2006-2016 Asian Research Publishing Network (ARPN). All rights reserved.

Joelianto E.,Bandung Institute of Technology | Wiranto I.,State University of Gorontalo
International Journal of Artificial Intelligence | Year: 2011

The main problem in multi-sensor-multi-target tracking is data association problem that leads to multidimensional assignment problems. In this paper, a multidimensional assignment problem is solved by merging ant colony optimization, Kalman Filter and artificial neural network. The ant colony optimization algorithm is first applied to acquire the number of targets, next the states of the targets are estimated using the Kalman filter, and finally, the estimation results are improved by using the artificial neural network. In ant colony optimization algorithm, it has been investigated the process of choosing initial pheromone value of ants, ants placement in the second cycle and afterward. It is found that the ant colony optimization algorithm will produce better and faster search results if the initial pheromone value equals to the visibility and new ants are placed at the initial position in the next cycle on the point of the last visit of the previous cycle of ants. The proposed traget tracking system leads to improved performances in the simulation cases. © 2011 by IJAI.

Ridwan W.,State University of Gorontalo | Trilaksono B.R.,Bandung Institute of Technology
International Journal on Electrical Engineering and Informatics | Year: 2011

Networked Control Systems (NCS) is a control system in which the sensors, controllers, and the actuators are connected via communication network. The use of communication network will lead to intermittent losses or delays of the information and may decrease the performance and cause instability. This paper presents the design of H ∞ state feedback controller for NCS. The NCS is modelled as a time delay system. Two network features are considered: signal transmission delay and data packet dropout. Our objective is focused on the design of state feedback controller which guarantee asymptotic stability of the closed-loop systems. The proposed methods are given in the terms of Linear Matrix Inequality (LMI). Finally, we consider an unstable system for numerical example. It is shown that the state feedback controller proposed here make the closed-loop system stable with or without input disturbance.

Musa W.,State University of Gorontalo
International Journal of Applied Engineering Research | Year: 2015

Electricity demand forecasting model based on single algorithm at least have two problems related to local optima and computational cost. We consider to utilised the hybrid genetic algorithm and extended Nelder-Mead to solved local optima and reduced the number of iteration. Through the comparison in model evaluation, our hybrid model produced higher accuracy for electricity demand estimation. The proposed model can be used to assist decision-makers in forecasting electricity demand. © Research India Publications.

Hiola R.,State University of Gorontalo
International Journal of Pharmacy and Technology | Year: 2016

This study aims to predict the incoming and outgoing inpatients in Aloe Saboe Hospital Gorontalo,Indonesia by using ARIMA model transfer function. This research uses data in 2014 and found that the incoming and outcoming inpatients is affected by the incoming and outcoming inpatients the days before (t-1,t-2). © 2016,International Journal of Pharmacy and Technology. All rights reserved.

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