Yogyakarta, Indonesia

Islamic University of Indonesia

Yogyakarta, Indonesia

The Islamic University of Indonesia is a private university located in Yogyakarta, Indonesia. It was established in 27 Rajab 1364 or in 8 July 1945 as STI by political figures of the day including Dr. Muhammad Hatta, Mohammad Natsir, Mohammad Roem, Wachid Hasyim as well as Abdul Kahar Mudzakir. STI developed into a university called Universitas Islam Indonesia on 14 December 1947. Historically, UII is the first national university in Indonesia, and it is also the oldest private university in the country.The university is located in Sleman, Daerah Istimewa Yogyakarta. Wikipedia.

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Saifullah,Islamic University of Indonesia
Advanced Science Letters | Year: 2017

The fact that many learning paradigms that exit today are mostly founded on traditional cognitive methods in the form of reflective thinking, I felt invited to find other alternative paradigms as new ways to attack unexplored areas of learning. One way that could lead to the construction of a new paradigm for learning is to consider reflective attitudes as a way to arrive at equally strong or even more effective methods by which affective aspects of learning could be accommodated. Thus, this paper attempts to propose–learning by conscience-as a new paradigm in education. The proposed paradigm is founded on reflective attitudes which are predicted to positively affect learning and learners. The paradigm is based on the hermeneutic approach and is derived from various means of investigation such as descriptive, analytic, and eclectic methods. The investigation reveals that open-mindedness, whole-heartedness, and responsibility are the three main components that could form a solid base for the proposed new paradigm of thinking and learning. The investigation also reveals that learning by conscience is projected to occur through impulse, experience, communication, and action. © 2017 American Scientific Publishers All rights reserved.

Fatimah I.,Islamic University of Indonesia
IOP Conference Series: Materials Science and Engineering | Year: 2017

TiO2-SiO2have been synthesized by the sol-gel method from titanium isopropoxide and varied silica precursors: tetraethyl orthosilicate and tetra methyl ortho silicate. To study the effect of the precursor, prepared materials were characterized by X-ray diffraction, scanning electron microscopy, Diffuse Reflectance UV-vis optical absorption, and also gas sorption analysis. XRD patterns showed the formation of TiO2 anatase in the TiO2-SiO2 composite with different crystallite size from different silica precursor as well as the different surface morphology. The DRUV-vis absorption spectra exhibit similar band gap energy correspond to 3.21eV value while the surface area, pore volume and pore radius of the materials seems to be affected by the precursor. The higher specific surface area contributes to give the enhanced activity in phenol hydroxylation and methylene blue photodegradation. © Published under licence by IOP Publishing Ltd.

Teguh M.,Islamic University of Indonesia
Procedia Engineering | Year: 2017

Masonry infill walls of reinforced concrete frame structures are commonly used for non-engineered and engineered buildings. For this establishment, exterior walls and interior partitions are made of masonry for producing a cost-effective solution for building purposes. Although walls are usually considered as a non-structural element of reinforced concrete frame structures, the masonry infill walls contribute significantly to the seismic building performance. The interaction effect between bounding frame and infill wall is a complicated issue in the experimental test. This paper presents experimental investigations of masonry infill walls of RC frame buildings under cyclic in-plane loads. Three typical reinforced concrete frames with and without infill masonry walls were experimentally conducted to seek their structural behavior in terms of stiffness, strength and ductility of the structures. In this research, tie-beam and tie-column (practical beam and column) components applied to non-engineered buildings were adopted to perform typical reinforced concrete frames. Their hysteretic behavior of RC frames as well as the effect of gaps between the frame and the infill on the structural behavior are briefly discussed. © 2017 The Authors.

Pawirodikromo W.,Islamic University of Indonesia
Procedia Engineering | Year: 2017

A numerical investigation was conducted on the damage potential of 25-low frequency content ground motions (earthquake) normalized to be the maximum of 0.30 g. The damage potential is measured based on several parameters started from the simplest parameter (Level-1) to the complex parameter (Level-5). The global inelastic response of 10-story RC structure subjected to the corresponding ground motions, i.e the base shear, roof horizontal displacement, hysteretic energy and element damage index, have been used as damage indicators. Then, the ground motion parameters were correlated with the damage indicators. Results of the investigation showed that among the damage indicators are well correlated. The A/V ratio is relatively simple parameter (Level-2) and possesses relatively consistent and high correlation coefficient R with the damage indicators. Accordingly, A/V ratio can be stated as simple damage potential to cause severity of the structure under earthquake excitation. © 2017 The Authors.

Haryono K.,Islamic University of Indonesia
ACM International Conference Proceeding Series | Year: 2016

Implementation of Accounting Information Systems (AIS) has become a mandatory requirement for all types of companies. One role is to improve the financial performance of a company. The use of AIS has also to increase competitiveness. Especially for trading companies that managing inventory with rapid circulation and more. Inventory management on trading companies generally use one and more of three methods. That is FIFO, LIFO, and AVERAGE. In the process of circulation, there is often a difference between value of manual processes with computer process. Especially process in return of goods transaction. The difference was caused by knowledge gap. In the manual process, the user has knowledge of history of goods. While in the process of computerization, computers do circulation based inventory method used. Description from problem and to devise alternative solutions, we did several activities to deepen study related to this issue. Among them is by investigation at time of the transaction, mentoring user, Forum Group Discussion (FGD), and training during implementation of AIS for several years at a trading company in Indonesia. This study will describe lesson learning by collecting a variety of cases and examples of alternative solutions to ever run in various companies. © 2016 ACM.

Dewa C.K.,Islamic University of Indonesia
Proceeding - 2016 International Seminar on Intelligent Technology and Its Application, ISITIA 2016: Recent Trends in Intelligent Computational Technologies for Sustainable Energy | Year: 2016

Although Javanese language can be considered as a popular local language in Indonesia, available tools to support Javanese language learning are still very limited. Similar to any other languages, Javanese language also has homograph words, so different pronunciations for same word can produce different meanings. This condition then may cause confusion for Javanese language learners since one of the uniqueness of Javanese language lies in the vowels and consonants pronunciation. To overcome this problem, a method to help the classification of Javanese vowels sound with convolutional neural network (CNN) is proposed. To extract the features from the audio data, Mel-frequency spectral coefficients (MFSC) is used rather than standard Mel-frequency cepstral coefficients (MFCC). The proposed CNN architecture model consists of three convolutional and pooling layers, a fully connected layer, and a logistic regression unit as an output layer. Experiment results show that CNN with dropout regularization is able to classify five types of Javanese vowels sound with accuracy of 94%. © 2016 IEEE.

Muhaimin,Islamic University of Indonesia
Journal of Physics: Conference Series | Year: 2017

Simulation distribution of pollutants (SOx and NOx) emitted from Cirebon power plant activities have been carried out. Gaussian models and scenarios are used to predict the concentration of pollutant gasses. The purposes of this study were to determine the distribution of the flue gas from the power plant activity and differences pollutant gas concentrations in the wet and dry seasons. The result showed that the concentration of pollutant gasses in the dry season was higher than the wet season. The difference of pollutant concentration because of wind speed, gas flow rate, and temperature of the gas that flows out of the chimney. The maximum concentration of pollutant gasses in wet season for SOx is 30.14 μg/m3, while NOx is 26.35 μg/m3. Then, The simulation of air pollution in the dry season for SOx is 42.38 μg/m3, while NOx is 34.78 μg/m3. © Published under licence by IOP Publishing Ltd.

Fatimah I.,Islamic University of Indonesia | Wang S.,Curtin University Australia | Wulandari D.,Islamic University of Indonesia
Applied Clay Science | Year: 2011

Synthesis of a ZnO/montmorillonite photocatalyst based on an Indonesian natural montmorillonite was conducted using a sol-gel intercalation method. The physicochemical properties of the material were determined by XRD, N2 adsorption-desorption, SEM, TEM and UV-Vis diffuse reflectance. The activity was evaluated in photocatalytic and photochemical degradation of methylene blue (MB) with and without H2O2. Characterization showed that the ZnO particles were successfully distributed in montmorillonite support and ZnO/montmorillonite had lower band gap energy. The increased adsorption of MB on ZnO/montmorillonite resulted in faster photodegradation. The kinetics of the reaction obeyed the Langmuir-Hinshelwood model. © 2011 Elsevier B.V.

Fatimah I.,Islamic University of Indonesia
Journal of Materials and Environmental Science | Year: 2012

Titania pillared montmorillonite from Indonesian montmorillonite by using titanium isopropoxide as precursor was successfully prepared. Physico-chemical character of material by using x-ray diffraction, gas sorption analyzer, diffuse reflectance UV-Visible, scanning electron microscope (SEM) and energy dispersive x-ray (EDAX) showed the dipersion of titania in dominantly anatase phase that is theoretically active as photocatalyst. The photoactivity was evaluated in methylene blue photodegradation and Eschericia coli inactivation. The kinetics of metylene blue photodegradation indicate the significant role of prepared material as photocatalyst as well as in E. coli inactivation. Photodegradation of methylene blue over prepared material shows the fitness to Langmuir-Hinshelwood model.

Fatimah I.,Islamic University of Indonesia | Huda T.,Islamic University of Indonesia
Applied Clay Science | Year: 2013

Organo-clays of cetyltrimethylammonium(CTMA)-intercalated montmorillonite from a naturally occurring Indonesian montmorillonite were prepared. Previous research showed that the insertion of surfactants into interlayer spaces in montmorillonite improved the adsorption of hydrophobic chemicals. The current research focused on the effects of preparation variables, the concentration of CTMA surfactant, the cation exchange capacity (CEC) of the montmorillonite clay and their ratio (CTMA/CEC) on the physicochemical characteristics of the organo-clays and adsorption of toluene. X-ray diffraction (XRD), surface area analysis, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) were used to compare the physicochemical characteristics of the modified and unmodified montmorillonite clays. The adsorption of toluene was studied in kinetics and isotherm. It was found that the CTMA/CEC ratio strongly affected the physicochemical properties and adsorption capacities of the montmorillonite surfaces. Adsorption kinetics was evaluated by pseudo-first order, pseudo-second order and Elovich models. Adsorption isotherm was assessed with the Langmuir, Freundlich and Temkin isotherms. The data were best fit by the pseudo-second order model and the Langmuir model. © 2012 Elsevier B.V.

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