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29,167 Article Results

A Literature Survey on Resource Management Techniques, Issues and Challenges in Cloud Computing

10.12928/telkomnika.v15i4.6574
Frederic; University of Science and Technology Beijing, China Nzanywayingoma , Yang; University of Science and Technology Beijing, China Yang
Cloud computing is a large scale distributed computing which provides on demand services for clients. Cloud Clients use web browsers, mobile apps, thin clients, or terminal emulators to request and control their cloud resources at any time and anywhere through the network. As many companies are shifting their data to cloud and as many people are being aware of the advantages of storing data to cloud, there is increasing number of cloud computing infrastructure and large amount of data which lead to the complexity management for cloud providers. We surveyed the state-of-the-art resource management techniques for IaaS (infrastructure as a service) in cloud computing. Then we put forward different major issues in the deployment of the cloud infrastructure in order to avoid poor service delivery in cloud computing.
Volume: 15
Issue: 4
Page: 1918-1928
Publish at: 2017-12-01

Diminishing Connectivity Failures by Auto-Reconfiguration in WSN

10.11591/ijeecs.v8.i3.pp662-666
K. Gugan , V. Saravanan
The Wireless Sensor Network is one of the most significant purposes behind the accomplishment of long range wireless communication. Frequent connectivity failures are occurred in the sensor-organised network due to obstruction, snags, message drop because of node energy depletion; obstacle and so forth. The total communication gets collapsed if there any lessening in the nature of correspondence or quality between the sensor nodes or from the sensor nodes to the sink nodes and this prompts to connection failures. To overcome the frequent connectivity failures we propose Diminishing Connectivity Failures by Auto-Reconfiguration in WSN (DCFA). This scheme provides steadfast routes to reduce the connectivity failure and improve the network performance. 
Volume: 8
Issue: 3
Page: 662-666
Publish at: 2017-12-01

Optimization of tilt angle for solar panel: Case study Tunisia

10.11591/ijeecs.v8.i3.pp762-769
Hatem Tlijani , Abir Aissaoui , Rached Ben Younes
This paper is a comparisation study between an experimental data and Matlab simulation of output PV characteristic affected by the orientation and the tilt angle of a photovoltaic solar module with inclined plane and by the dimension of the panel. The PV panel was rotated towards the east, south and west and positioned for the angles 0°, 30°, 45°, 60° and 90°. In this position, the values of current, voltage and power are measured. In the other side, using the mathematical model to calculate the solar radiation incident on an inclined surface as a function of the tilt angle was developed in MATLAB/SIMULINK model. The optimum angles were determined as positions in which maximum values of solar irradiation and maximum power were registered to characterize the P-V and V-I photovoltaic panel.
Volume: 8
Issue: 3
Page: 762-769
Publish at: 2017-12-01

The Toolkit of Success Rate Calculation of Broiler Harvest

10.12928/telkomnika.v15i4.6744
Ahmad; Universitas Indo Global Mandiri, Indonesia Sanmorino , Rendra; Universitas Indo Global Mandiri, Indonesia Gustriansyah , Terttiaavini; Universitas Indo Global Mandiri, Indonesia Terttiaavini , Isabella; Universitas Indo Global Mandiri, Indonesia Isabella
Failed in the harvest should be avoided by the owners of broiler farms. Various ways are done to make the harvest successful and make a profit. Preparations made before the period of broiler development can be done optimally, with the hope that the harvest is successful. But the problem, on the field in fact not as smooth as had been planned at the beginning or before the development period. There is always a lack or inappropriate so that the harvest is not optimal or even harvest failure. Based on the background that has been described, we tried to create a toolkit that can be used to calculate success rate of the broiler harvest. With this toolkit, broiler farm owners are expected to have a guide and can make the right move in the period of broiler development. To calculate the success rate of broiler harvest, we used a model based on the performance index calculation. Toolkit that created running on local network environment using an Apache web server. The Toolkit uses JavaScript library to display the calculation results in the form of charts that are easier to understand. Based on the results of testing that has been done, this toolkit can perform calculations in a relatively short time. Can present the results of calculations with accurate information. The accuracy of success rate calculation toolkit reached 90%. It is obtained by comparing the performance index and the total weight of broiler that obtained when harvested.
Volume: 15
Issue: 4
Page: 1947-1954
Publish at: 2017-12-01

Development of air quality monitoring system in closed environment

10.12928/telkomnika.v15i4.5995
Bochen; Harbin University of Science and Technology, China Li , Xibo; Harbin University of Science and Technology, China Ding , Qingyao; Harbin University of Science and Technology, China Cai
For closed environment, the characteristic is that the confined space is small and it doesn't flow with the outside world, it will produce nausea, dizziness, weakness and other symptoms if one stayed in that environment for long time. For this, developing a monitoring system of air quality in closed environment has theoretical significance and great value. In this paper, a modular design method is used to design a closed air quality monitoring system, The air quality monitoring system is composed of a main board and detection modules. When the measured closed environment is changed, it is only necessary to add or reduce the corresponding detection module, which increases the flexibility of the system and the convenience of later maintenance, and evaluation algorithm based on fuzzy mathematics is established. The measurement and air quality evaluation experiments are carried out using the developed monitoring system, The results show that the air quality evaluation algorithm can effectively evaluate the environmental air quality, and the measurement accuracy of the environmental parameters can meet the relevant standards.
Volume: 15
Issue: 4
Page: 1997-2006
Publish at: 2017-12-01

Corona Detection Using Wide Band Antenna and Time Delay Method

10.12928/telkomnika.v15i4.7233
A.; Kawasan Institusi Penyelidikan, Malaysia A. Raj , S.; Kawasan Institusi Penyelidikan, Malaysia Ishak , M.; Kawasan Institusi Penyelidikan, Malaysia D. M. Amir , B.; Kawasan Institusi Penyelidikan, Malaysia Yogendra , M.; PJX-HM Shah Tower, Malaysia Raffi
IEEE Std 100-2000 defines corona as a luminous discharge due to ionization of the air surrounding a conductor caused by a voltage gradient exceeding a certain critical value. It occurs when the insulating material begins to ionize or conduct due to voltage stress. Corona brings a lot of damages such as corrosion, loss inoverhead transmission lines and electromagnetic interference. Monitoring of corona may reduce the maintenance and replacement cost of electrical equipment. The motivation of this experiment is to calibrate corona detector antennas in the future. The error obtained will determine the efficiency of the antenna to detect and locate potential coronas in electrical equipment in a substation with switchgears or transformers. The operation bandwidth of the antenna is 320MHz to 1.20GHz making it useful to detect and corona. The measurement method of utilizing delay between signals first peak is effective with average 4.76% error with maximum 10.0% error recorded. This may be used to develop a corona online measuring system in the future.
Volume: 15
Issue: 4
Page: 1547-1553
Publish at: 2017-12-01

The Chaos and Stability of Firefly Algorithm Adjacent Individual

10.12928/telkomnika.v15i4.5015
Wen Xin; Hunan University, China Yu , Jun Nian; Hunan University, China Wang , Yan; Hunan University, China Li , Zheng Heng; Hunan University, China Wang
In this paper, in order to overcome the defect of the firefly algorithm, for example, the slow convergence rate, low accuracy and easily falling into the local optima in the global optimization search, we propose a dynamic population firefly algorithm based on chaos. The stability between the fireflies is proved, and the similar chaotic phenomenon in firefly algorithm can be simulated.
Volume: 15
Issue: 4
Page: 1733-1740
Publish at: 2017-12-01

Shunt Active Power Filter based on P-Q Theory with Multilevel Inverters for Harmonic Current Compensation

10.12928/telkomnika.v15i4.6363
Suhendar; University of Sultan Ageng Tirtayasa, Indonesia Suhendar , Teguh; University of Sultan Ageng Tirtayasa, Indonesia Firmansyah , Alief; University of Sultan Ageng Tirtayasa, Indonesia Maulana , Zuldiag; University of Sultan Ageng Tirtayasa, Indonesia Zuldiag , Vektor; Bogor Agricultural University, Indonesia Dewanto
A shunt active power filter based on P-Q theory combined with high pass filters (HPFs) for harmonic-current compensation was proposed in this paper. A dual level H-bridge inverter (DLHI) and clamp diode multilevel inverter (CDMI) as inverters was used. The proposed active power filter was applied to 3-phase power system with 220V voltage and 50Hz frequency. the simulation model was constructed by using Simulink MATLAB. The results show that the proposed active power filter with CDMI produces lower total harmonic distortion (THD) than the active power filters with DLHI. Additionally, the proposed shunt active power filter has lower THD compared with other types of active power filters.
Volume: 15
Issue: 4
Page: 1632-1640
Publish at: 2017-12-01

Influences of Buffer Size and Eb/No on Very Small Aperture Terminal (VSAT) Communictions

10.12928/telkomnika.v15i4.5788
Debby Maureen; Bogor Agricultural University, Indonesia Talumewo , Heru; Bogor Agricultural University, Indonesia Sukoco , Fahren; Bogor Agricultural University, Indonesia Bukhari
In data communication of the signal transmitted from the transmitter (Tx) to receiver (Rx) stations is very influential. Buffer and Eb/No are two parameters that influence the quality of signal. This research measures those parameters and the relationship among them. This research employs data collected on the Link STM-1 side in Makassar and Timika operated by PT. Telkom Metra Bogor. The period of data is carried out for 56 days taken by using Simple Management Network Protocol (SNMP). To analyze the relationship among those two parameters, we use product moment correlation (PMC) method. The result correlation of the data buffer and Eb/No with a level of real is 0.05 and then buffer set in modem CDM 700 is 50% with threshold Eb/No 12.1 dB and the modulations used 64-QAM. That resulted correlation of side in Makassar is 0.648 and the p-value is 0.000. Correlation of side in Timika is 0.722 and the p-value is 0.000. These results suggest that the two parameters are correlated strong and significant. 
Volume: 15
Issue: 4
Page: 1990-1996
Publish at: 2017-12-01

Neural KDE Based Behaviour Model for Detecting Intrusions in Network Environment

10.11591/ijai.v6.i4.pp166-173
V. Brindha Devi , K.L. Shunmuganathan
Network intrusion is one of the growing concern throughout the globe about the information stealing and data exfiltration. In recent years this was coupled with the data exfiltration and infiltration through the internal threats. Various security encounters have been taken in order to reduce the intrusion and to prevent intrusion, since the stats reveals that every 4 seconds, at least one intrusion is detected in the detection engines. An external software mechanism is required in order to detect the network intrusions. Based on the above stated problem, here we proposed a new hybrid behaviour model based on Neural KDE and correlation method to detect intrusions. The proposed work is splitted into two phases. Initial phase is setup with the Neural KDE as the learning phase and the basic network parameters are profiled for each hosts, here the neural KDE is generated based on the input and learned parameters of the network. Next phase is the detection phase, here the Neural KDE is computed for the identified parameters and the learned KDE feature value is correlated with the present KDE values and correlated values are calculated using cross correlation method. Experimental results show that the proposed model is robust in detecting the intrusions over the network.
Volume: 6
Issue: 4
Page: 166-173
Publish at: 2017-12-01

Coordination of SPS and CES to Mitigate Oscillatory Condition on Power Systems

10.12928/telkomnika.v15i4.6636
Rahmat Septian; Universitas Pertamina, Indonesia Wijanarko , Herlambang; The University of Queensland, Australia Setiadi , Teguh Aryo; Universitas Pertamina, Indonesia Nugroho
Oscillatory condition on power system (low-frequency oscillation) is one of the important factors to determine the quality of the power system. With the increasing number of load demand, this condition is getting worse in recent years. Hence, utilizing addition devices to maintain and mitigate the oscillatory condition of power system is crucial. This paper proposed a method to mitigate power system oscillation by installing one of the flexible AC transmission system (FACTS) devices called solid phase shifter (SPS) and energy storage devices called capacitor energy storage (CES). To analyze the performance of power system with SPS and CES, the eigenvalue and damping ratio analysis are used. Time domain simulation is also investigated to analyze the dynamic behaviors of power system considering SPS and CES. Furthermore, increasing number of load demand is carried out to analyze how much load can be increased without increasing power to the grid. From the simulation, it is found that SPS and CES can mitigate low-frequency oscillation on power system indicated by highest damping, smallest overshoot, and fastest settling time. It is also found that load demand can be increased significantly when SPS and CES installed to the system.
Volume: 15
Issue: 4
Page: 1601-1609
Publish at: 2017-12-01

RTL Modelling for the Cipher Blcok Chaining Mode (Cbc) for Data Security

10.11591/ijeecs.v8.i3.pp709-711
Meenakshi R. K , A. Arivazhagan
The demand of satellite communication, the security algorithms are to be designed in the board. The information from the satellite to the ground is required the data security with the cryptographic algorithms. Advanced encryption standard (AES) is one of the promising cryptographic algorithms for the terrestrial communication. In this paper, the encryption and decryption is mainly focused on the cipher block chaining (CBC) mode for achieving the high secured data transmission. For efficient data transmission, the AES algorithm is implemented by using CBC mode. The proposed work is designed by using RTL modeling and also the minimum numbers of logical elements are used for implementation. 
Volume: 8
Issue: 3
Page: 709-711
Publish at: 2017-12-01

Design of Compact Monopole Antenna using Double U-DMS Resonators for WLAN, LTE, and WiMAX Applications

10.12928/telkomnika.v15i4.7666
Ahmed; German Research Foundation (DFG) Boutejdar , Mohammad Ahmad; University of Palestina Salamin , Saad Dosse; Université Sidi Mohamed ben Abdellah Bennani , Soumia; Mohammed V University El Hani
This paper is under in-depth investigation due to suspicion of possible plagiarism on a high similarity indexIn this research, a novel wide-band microstrip antenna for wideband applications is proposed. The proposed antenna consists of a square radiating patch and a partial ground plane with a smal rectangular notch-shape. Two symmetrical U-slots are etched in radiating patch. The defected microstrip U-shapes and the small notch improve the antenna characterestics such impedance wideband and the gain along the transmission area. The proposed antenna is simulated on an FR4 substrate of a dielectric constant of 4.3, thickness 1.6 mm, permittivity 4.4, and loss tangent 0.018. The simulation and optimization results are carried out using CST software.The antenna topology occupies an area of 30 × 40 × 0.8 mm3 or about 0.629λg × 0.839λg × 0.017λg at 3 GHz (the centerresonance frequency). The antenna covers the range of 2.1711 to 4.0531 GHz, which meet the requirements of the wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX) and LTE (Long Term Evolution) band applications. Good VSWR, return loss and radiation pattern characteristics are obtained in the frequency band of interest. The obtained Simulation results for this antenna depict that it exhibits good radiation behavior within the transmission frequency range.
Volume: 15
Issue: 4
Page: 1693-1700
Publish at: 2017-12-01

Crops Diseases Detection and Solution System

10.11591/ijict.v6i3.pp209-217
Md. Abdul Awal , Mohammad Jahangir Alam , Md. Nurul Mustafa
The technology based modern agriculture industries are today’s requirement in every part of agriculture in Bangladesh. In this technology, the disease of plants is precisely controlled. Due to the variable atmospheric circumstances these conditions sometimes the farmer doesn’t know what type of disease on the plant and which type of medicine provide them to avoid diseases. This research developed for crops diseases detection and to provides solution by using image processing techniques. We have used Android Studio to develop the system. The crops diseases detection and solution system is compared the image of affected crops with database of CDDASS (Crops Diseases Detection and Solution system). If CDDASS detect any disease symptom, then provide suggestion so that farmers can take proper decision to provide medicine to the affected crops. The application has developed with user friendly features so that farmers can use it easily.
Volume: 6
Issue: 3
Page: 209-217
Publish at: 2017-12-01

Assessing Effectiveness of Research for Load Shedding in Power System

10.11591/ijece.v7i6.pp3235-3245
Raghu C.N. , A. Manjunatha
The research on loadshedding issues dates back to 1972 and till date many studies were introduced by the research community to address the issues. A closer review of existing techniques shows that still the effectiveness of loadshedding schemes are not yet benchmarked and majority of the existing system just considers the techniques to be quite symptomatic to either frequency or voltage. With an evolution of smart grids, majority of the controlling features of power system and networks are governed by a computational model. However, till date not enough evidences of potential computational model has been seen that claims to have better balance between the load shedding schemes and quality of power system performance. Hence, we review some significant literatures and highlights the research gap with the existing technqiues of load balancing that is meant for assisting the researcher to conclude after the selection process of existing system as a reference for future direction of study.
Volume: 7
Issue: 6
Page: 3235-3245
Publish at: 2017-12-01
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