Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Filter Icon

Filters article

Years

FAQ Arrow
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

27,860 Article Results

The Use of Polymer Based Gas Sensor for Detecting Formalin in Food Using Artificial Neural Network

10.12928/telkomnika.v15i4.6164
Budi; Universitas Muria Kudus, Indonesia Gunawan , Arief; Universitas Jenderal Soedirman Grendeng, Indonesia Sudarmaji
The usage of formalin as preservative substance in food is dangerous and make much threat to public society. Yet, it is difficult to identify the presence of formalin in food sensory. It commonly requires laboratory-based testing to detect the formalin. This work describes a detector system of formalin presence in food which employs a series of polymer-based gas sensor and uses a neural network detection method. The sensors are the polymer-carbon composite which made of the polymer mixed with active carbon. There are four types of polymer used, i.e. Polyethylene Glycol (PEG) 6000, PEG200, PEG20M, and PEG1450. The polymer-carbon composite provided a unique characteristic when it is exposed to vapor of food with or without formalin. The resistance of each polymer is different for each detected vapor. The combination of those sensors gives a pattern of voltage output on the sensors when they are exposed certain gas so that every gas has its unique output pattern. The method of detection uses an algorithm of back-propagation of the neural network. That voltage pattern of sensors serves as input to an artificial intelligence program. The result shows that the system has the accuracy of 75% in detecting formalin in food.
Volume: 15
Issue: 4
Page: 1641-1650
Publish at: 2017-12-01

Pervasive Device and Service Discovery Protocol in Interoperability XBee-IP Network

10.12928/telkomnika.v15i4.5725
Sabriansyah Rizqika; Brawijaya University, Indonesia Akbar , Helmi; Brawijaya University, Indonesia Nizar , Wijaya; Brawijaya University, Indonesia Kurniawan , Mochammad Hannats; Brawijaya University, Indonesia Hanafi Ichsan , Issa; Brawijaya University, Indonesia Arwani
The Internet of Things (IoT) communication protocol built over IP and non-IP environment. Therefore, a gateway device will be needed to bridge the IP and non-IP network transparently since an IoT user is more likely to concern on the service provided by the IoT device, rather than the complexity of the network or device configuration. Since today ubiquitous computing needs to hide the architectural level from it users, the data & information centric approach was proposed. However, the data & information centric protocol is having several issues and one of them is device and service discovery protocol over IP & non-IP network. This paper proposed a pervasive device and service discovery protocol that able to work in interoperability of the IP and non-IP network. The system environment consists of a smart device with XBee Communication as the non-IP network that will send the device and service description data to the IP network using WebSocket. The gateway will able to recognize the smart device and sent the data to the web-based user application. The user application displayed the discovered devices along the services and able to send the control data to each of the smart devices. Our proposed protocol also enriched with the smart device inoperability detection by using keep-alive tracking from the gateway to each of the smart devices. The result showed that the delay for the user application to detect the smart device in the XBee network is around 10.13 ms delay, and the service average delay requested by the user application to each of the devices is 2.13 ms.
Volume: 15
Issue: 4
Page: 1875-1882
Publish at: 2017-12-01

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

Thermal Modelling for Permanent Magnet Synchronous Machine (PMSM)

10.11591/ijpeds.v8.i4.pp1903-1912
R. Aziz , G. J. Atkinson , S. Salimin
It is important to predict the temperature in some of the essential parts in machine design to prevent the machine from any damage. Most researchers usually not given much attention on thermal analysis during machine design as much as the electromagnet design. Therefore, in this study, two types of thermal modelling were proposed to predict the temperature of a permanent magnet synchronous machine (PMSM). Infolytica ThermNet software has been used since the software is related to Infolytica Magnet and the losses obtained from the electromagnetic field analysis are used as the heat source in the thermal analysis. Comparison has been done between the predicted temperature from lumped parameter model and finite element analysis. The results also will be validated by using experimental setup. Since Infolytica Magnet has been used to analyse the electromagnetic output therefore finite element analysis model is the better choice.
Volume: 8
Issue: 4
Page: 1903-1912
Publish at: 2017-12-01

Identification of Rare Genetic Disorder from Single Nucleotide Variants Using Supervised Learning Technique

10.11591/ijai.v6.i4.pp174-184
Sathyavikasini K , Vijaya M S
Muscular dystrophy is a rare genetic disorder that affects the muscular system which deteriorates the skeletal muscles and hinders locomotion. In the finding of genetic disorders such as Muscular dystrophy, the disease is identified based on mutations in the gene sequence. A new model is proposed for classifying the disease accurately using gene sequences, mutated by adopting positional cloning on the reference cDNA sequence. The features of mutated gene sequences for missense, nonsense and silent mutations aims in distinguishing the type of disease and the classifiers are trained with commonly used supervised pattern learning techniques.10-fold cross validation results show that the decision tree algorithm was found to attain the best accuracy of 100%. In summary, this study provides an automatic model to classify the muscular dystrophy disease and shed a new light on predicting the genetic disorder from gene based features through pattern recognition model.
Volume: 6
Issue: 4
Page: 174-184
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

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

The Competition Between ISPs in Presence of the Net Neutrality

10.11591/ijict.v6i3.pp166-178
Mohamed El Amrani , Hamid Garmani , Mohamed Baslam , Rachid El Ayachi
In this work, we present an economic model of computer networks that describes the in-teraction between Internet Service Providers (ISP ), customers and content provider. The competition between ISP s may be translated by the prices they require and the qualities of service (QoS) they offer. The customer demand for service from an ISP does not only de-pend on the price and quality of service (QoS) of the ISP , but it is influenced by all those offered by its competitors. This behavior has been extensively analyzed using game the-ory as a decision support tool. We interpret a non-neutral network when a content provider privileges ISP s by offering them more bandwidth to ensure proper QoS to support ap-plications that require more data transport capacity (voice over internet protocol (V OIP ) the live video streaming, online gaming). In addition, our work focuses on the price game analysis and QoS between ISP s in two cases: neutral network and non-neutral network. After showing the existence and uniqueness of equilibrium in terms of quality of service, we analyzed the impact of net neutrality on competition between ISP s. We also validated our theoretical study with numerical results, which show that the game has an equilibrium point which depends on all the parameters of the system.
Volume: 6
Issue: 3
Page: 166-178
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
Show 1374 of 1858

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration