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30,895 Article Results

Development of a Spatial Path-Analysis Method for Spatial Data Analysis

10.11591/ijece.v8i4.pp2456-2467
Wiwin Sulistyo , Subanar Subanar , Reza Pulungan
Path analysis is a method used to analyze the relationship between independent and dependent variables to identify direct and indirect relationship between them. This method is developed by Sewal Wright and initially only uses correlation analysis results in identifying the variables' relationship. Path analysis method currently is mostly used to deal with variables with non-spatial data type. When analyzing variables that have elements of spatial dependency, path analysis could result in a less precise model. Therefore, it is necessary to build a path analysis model that is able to identify and take into account the effects of spatial dependencies. Spatial autocorrelation and spatial regression methods can be used to develop path analysis method so as to identify the effects of spatial dependencies. This paper proposes a method in the form of path analysis method development to process data that have spatial elements. This study also discusses our effort on establishing a method that could be used to identify and analyze the spatial effect on data in the framework of path analysis; we call this method spatial path analysis.
Volume: 8
Issue: 4
Page: 2456-2467
Publish at: 2018-08-01

Ship Speed Estimation using Wireless Sensor Networks: Three and Five Sensors Formulation

10.12928/telkomnika.v16i4.7596
Ajib Setyo; Universitas Indonesia Arifin , Dina Kusuma; Universitas Indonesia Wahyuni , Muhammad; Universitas Indonesia Suryanegara , Muhammad; Universitas Indonesia Asvial
Intrusion detection on the sea is an important surveillance problem for harbor protection, border security, and commercial facilities such as oil platforms, fisheries facilities and other marine wealth. Widely used methods for ship detection are using radar or satellite which is very expensive. Besides the high cost, the satellite image is easy affected by the cloud. And it is difficult to detect small boats or ships on the sea with marine radar due to the noise or clutters generated by the uneven sea surface. In this paper, we propose ship speed estimation by taking advantage of ship-generated wave’s characteristics with Wireless Sensor Network (WSN). We use a grid fashion for sensor node deployment that can be clustered into three and five sensors. We propose the ship speed formulation for each type of claster. We use three sensors, we may expect to improve energy efficiency by involving small number of sensor for detection. We use five sensors, we may expect to improve accuracy of detection. We also propose an algorithm for detection by incorporating individual sensor detection. The individual sensor detection produces a time stamp that records the ship-generated waves intruding the sensors.
Volume: 16
Issue: 4
Page: 1527-1534
Publish at: 2018-08-01

Handover Algorithm based VLP using Mobility Prediction Database for Vehicular Network

10.11591/ijece.v8i4.pp2477-2485
Arfah A. Hasbollah , Sharifah H. S. Ariffin , Nurzal E. Ghazali , K. Mohamad Yusuf , Hiroaki Morino
This paper proposes an improved handover algorithm method for vehicle location prediction (VLP-HA) using mobility prediction database. The main advantage of this method is the mobility prediction database is based on real traffic data traces. Furthermore, the proposed method has the ability to reduce handover decision time and solve resource allocation problem. The algorithm is simple and can be computed very rapidly; thus, its implementation for a high-speed vehicle is possible. To evaluate the effectiveness of the proposed method, QualNet simulation is carried out under different velocity scenarios. Its performance is compared with conventional handover method. The superiority of the proposed method over conventional handover method in deciding the best handover location and choosing candidate access points is highlighted by simulation. It was found that VLP-HA has clearly reduced handover delay by 45% compared to handover without VLP, give high accuracy, hence low complexity algorithm.
Volume: 8
Issue: 4
Page: 2477-2485
Publish at: 2018-08-01

Analysis of Time Diversity Gain for Satellite Communication Link based on Ku-Band Rain Attenuation Data Measured in Malaysia

10.11591/ijece.v8i4.pp2608-2613
Islam Md. Rafiqul , Ali Kadhim Lwas , Mohamed Hadi Habaebi , Md Moktarul Alam , Jalel Chebil , Jit Singh Mandeep , Alhareth Zyoud
This paper reports a study on mitigation of propagation impairments on Earth–space communication links. The study uses time diversity as a technique for mitigating rain propagation impairment in order to rectify rain fade. Rain attenuation time series along earth-to-satellite link were measured for two years period at 12.255 GHz in Malaysia. The time diversity technique was applied on measured rain fade to investigate the level of possible improvement in system. Time diversity gain from measured one-minute rain attenuation for two years period was estimated and significant improvement was observed with different delays of time. These findings will be utilized as a useful tool for link designers to apply time diversity as a rain fade mitigation technique in Earth-satellite communications systems.
Volume: 8
Issue: 4
Page: 2608-2613
Publish at: 2018-08-01

Enhancing Performance in Medical Articles Summarization with Multi-Feature Selection

10.11591/ijece.v8i4.pp2299-2309
Susetyo Bagas Bhaskoro , Saiful Akbar , Suhono Harso Supangkat
The research aimed at providing an outcome summary of extraordinary events information for public health surveillance systems based on the extraction of online medical articles. The data set used is 7,346 pieces. Characteristics possessed by online medical articles include paragraphs that comprise more than one and the core location of the story or important sentences scattered at the beginning, middle and end of a paragraph. Therefore, this study conducted a summary by maintaining important phrases related to the information of extraordinary events scattered in every paragraph in the medical article online. The summary method used is maximal marginal relevance with an n-best value of 0.7. While the multi feature selection in question is the use of features to improve the performance of the summary system. The first feature selection is the use of title and statistic number of word and noun occurrence, and weighting tf-idf. In addition, other features are word level category in medical content patterns to identify important sentences of each paragraph in the online medical article. The important sentences defined in this study are classified into three categories: core sentence, explanatory sentence, and supporting sentence. The system test in this study was divided into two categories, such as extrinsic and intrinsic test. Extrinsic test is comparing the summary results of the decisions made by the experts with the output resulting from the system. While intrinsic test compared three n-Best weighting value method, feature selection combination, and combined feature selection combination with word level category in medical content. The extrinsic evaluation result was 72%. While intrinsic evaluation result of feature selection combination merger method with word category in medical content was 91,6% for precision, 92,6% for recall and f-measure was 92,2%.
Volume: 8
Issue: 4
Page: 2299-2309
Publish at: 2018-08-01

Text in Image Hiding using Developed LSB and Random Method

10.11591/ijece.v8i4.pp2091-2097
Elaf Ali Abbood , Rusul Mohammed Neamah , Shaymaa Abdulkadhm
Information Hiding is a task that face difficult challenges in current time. The reason for these challenges is the rapid development of methods of detection of hidden information. So, researchers have been interested in developing methods of concealment, making it difficult for attackers to access hidden information using new methods of concealment. Such as the introducing a complex algorithms, use a random methods and invent more complicated and difficult steps. This paper presents a new method of hiding information within the image. This method creates a new sequence of mysterious and difficult steps by dividing the secret text on all image and random distributing of bits to each row. Then using a special reverse method to hide the bits in that row. The LSB method has also been developed to make it more difficult to hide the pixel. The results presented illustrate the strength and security of the method and provide greater protection for hidden information. Also, the result illustrate the quality of the stego image compared with the original image using PSNR and SSIM quality measures.
Volume: 8
Issue: 4
Page: 2091-2097
Publish at: 2018-08-01

Good Parameters for PSO in Optimizing Laying Hen Diet

10.11591/ijece.v8i4.pp2419-2432
Gusti Ahmad Fanshuri Alfarisy , Wayan Firdaus Mahmudy , Muhammad Halim Natsir
Manual formulation of poultry diet by taking into account the fulfillment of all nutrients requirement with least cost is a difficult task. Particle Swarm Optimization (PSO) shows promising technique to solve this problem. However, there is a lack of studying a good parameter for PSO to solve feed formulation problem since PSO is sensitive to control parameter which depends on the problem. Therefore, this study investigates good swarm size, total iterations, acceleration coefficients, and inertia weight to produce a better formula. PSO with proposed good parameters is compared with other parameters. The obtained result shows that PSO with good parameters choice produces the highest fitness. Furthermore, good parameters of PSO can be used as a reference for a software developer and for further research to optimize poultry diet using PSO.
Volume: 8
Issue: 4
Page: 2419-2432
Publish at: 2018-08-01

Automatic Threshold on Current based Anti-pinch Mechanism for Power Windows

10.11591/ijece.v8i4.pp2172-2179
Wahyu Kunto Wibowo , Seok-Kwon Jeong , Sam-Sang You , Lee Jaemin
In this paper, the automotive power window has been integrated with an advanced safety mechanism called anti-pinch system for good protection. Based on a contact method, a new safety mechanism using a low-cost technology has been proposed to set a threshold value as a limit to decide the pinch condition, or automatic threshold method. The electric current information is easily detected by using current sensor installed on a motor driver without incorporating extra device. Then the pinch condition is quickly reflected and calculated by using current information in the system. Since the automatic threshold is decided by analyzing system behavior in advance, the optimal calculation can be guaranteed and then applied it on the safety mechanism in a cost-effective manner. Through extensive experimental tests, the squeezing forces of the proposed anti-pinch system have been verified to satisfy requirements of the FMVSS 118 regulations.
Volume: 8
Issue: 4
Page: 2172-2179
Publish at: 2018-08-01

A Review of Electromyography Signal Analysis Techniques for Musculoskeletal Disorders

10.11591/ijeecs.v11.i3.pp1136-1146
T. N. S. Tengku Zawawi , A. R. Abdullah , M.H. Jopri , Tole Sutikno , N.M. Saad , R. Sudirman
Social Security Organisation (SOCSO) Malaysia has reported that the incidence of work related to musculoskeletal disorders (MSDs) has been growing planetary in the manufacturing industry. MSDs are the result of repetitive, forceful or awkward movements on our body and or body parts of bones, joints, ligaments and other soft tissues. Workplace pains and strains can be serious and disabling for workers, causing pain and suffering ranging from discomfort to severe disability. To overcome this problem, Electromyography is proper to use in Health Screening Program (HSP) it to monitor darn diagnose the muscle’s performance for their patient and know the exact localization of muscle pain. The previous researchers has been explore of several in EMG analysis techniques and features proposed in time, frequency and time-frequency domain analysis. This review of common EMG signal processing techniques is proposed by assembling from simple to complex analysis techniques to give the overview information for the other researcher. This is because; the suitable selection of a method and its features settings will ensure readability of the time-frequency representations and reliability of results. The strongest correspond with time-frequency characteristic and resolution also reducing cross term for bilinear will consider it as the optimal method.
Volume: 11
Issue: 3
Page: 1136-1146
Publish at: 2018-07-17

Security Authentication for Student Cards’ Biometric Recognition Using Viola-Jones Algorithm

10.11591/ijeecs.v11.i1.pp241-247
S. Ibrahim , K.R. Jamaluddin , K.A.F.A. Samah
The unauthorized access to the university entrance could be gained by only flashing a student card. This unsecure situation shows the loophole of security authentication in a university. In order to overcome this, a biometric recognition could be the most suitable candidate as it varies uniquely from one person to another. A study on student cards’ biometric recognition using Viola-Jones algorithm is presented as it is proven as a powerful algorithm in terms of superb detection rates and speed.  It is done by comparing the facial structures and features between the student card’s image and the card holder image, thus determining the similarity. The recognition performance is evaluated based on the percentage of similarity using 100 testing images of 50 students. The observation on results obtained the effectiveness of the Viola-Jones features in student cards’ biometric recognition rate.
Volume: 11
Issue: 1
Page: 241-247
Publish at: 2018-07-01

GPS & GSM Based Accident Detection And Auto Intimation

10.11591/ijeecs.v11.i1.pp356-361
S.George Fernandez , R Palanisamy , K. Vijayakumar
The high demand of automobiles has also increased the traffic hazards and the road accidents. Life of the people is under high risk. This is because of the lack of best emergency facilities available in our country. An automatic alarm device for vehicle accidents is introduced in this paper. This design is a system which can detect accidents in significantly less time and sends the basic information to first aid centre within a few seconds covering geographical coordinates, the time and angle in which a vehicle accident had occurred. This alert message is sent to the rescue team in a short time, which will help in saving the valuable lives. A Switch is also provided in order to terminate the sending of a message in rare case where there is no casualty, this can save the precious time of the medical rescue team. When the accident occurs the alert message is sent automatically to the rescue team and to the police station. The message is sent through the GSM module and the location of the accident is detected with the help of the GPS module. 
Volume: 11
Issue: 1
Page: 356-361
Publish at: 2018-07-01

Multibeam RF Antenna Performance for Indoor Coverage in Stadium

10.11591/ijeecs.v11.i1.pp203-208
Suzi Seroja Sarnin , Mohd Yusdee Yusoff , Mohamad Yazid Mohamad , Nani Fadzlin Naim , Norsuzila Yaacob
The objective of the proposal is to address the demand on data over the services provided by telecommunication industries during major events held in Malaysia especially in stadiums. Previously, during most of the events, users will experience bad services in both data and voice transactions. It is not only slow or delayed but almost failed to access the network to connect them to the world. Besides a few solutions that have been introduced such as IBC (In-Building Coverage) and Small Cells, this proposed solution Multibeam RF Antenna, is one of them to address the demand. This solution has been chosen as it is fast in deployment, easy to maintain and cost effective even if it may not cover the whole targeted areas.This paper will provide analysis, evaluation and actual Walk Test (WT) to show the effectiveness of the Multibeam RF Antenna
Volume: 11
Issue: 1
Page: 203-208
Publish at: 2018-07-01

Wireless Monitoring Prototype for Photovoltaic Parameters

10.11591/ijeecs.v11.i1.pp9-17
A. H. Sabry , W. Z. W. Hasan , MZA Ab. Kadir , M. A. M. Radzi , S. Shafie
Photovoltaic (PV) parameters monitoring is very important for the implementation and optimum utilization of solar energy as the electricity source. This work proposes a design of simple, cost-efficient, and low consumption wireless PV monitoring system enhanced by a driving software for recording the PV system parameters. The circuit is designed with a minimum number of components to manage four types of sensors to measure four parameters that are essential for real-time analysis and prediction of PV performance. The only pair of XBee RF modules as an active component, while others are passive, includes resistors and capacitors for PV current, and voltage those for signal conditioning, temperature and irradiance sensors were also involved. The paper presents a prototype system for high voltage series-connected PV array in the range (100-310) V and 3 ampere as a maximum current, while the sampling frequency can be configured up to 14 sample/Sec in applications of the short period for data logging for the four channels. The proposed system succeeds in providing real-time monitoring with lower cost and can be extended for more functions such as controlling tracking system and failure diagnosis. Photovoltaic (PV) parameters monitoring is very important for the implementation and optimum utilisation of solar energy as electricity source. This work proposes a design of simple, cost-efficient, and low consumption wireless PV monitoring system enhanced by a driving software for recording the PV system parameters. The circuit is designed with a minimum number of components to manage four types of sensors to measure four parameters that are essential for real-time analysis and prediction of PV performance. Only pair of XBee RF modules as an active components, while othera are passive, includes resistors and capacitors for PV current, and voltage those for signal conditioning, temperature and irradiance sensors were also involved. The paper presents a prototype system for high voltage series connected PV array in the range (100-310) V and 3 ampere as a maximum current, while the sampling frequency can be configured up to 14 sample/Sec in applications of the short period for data logging for the four channels. The proposed system succeeds in providing real-time monitoring with lower cost and can be extended for more functions such as controlling tracking system and failure diagnosis.
Volume: 11
Issue: 1
Page: 9-17
Publish at: 2018-07-01

A Secure Data Aggregation Technique for Wireless Sensor Networks Using Iterative Filtering

10.11591/ijeecs.v11.i1.pp284-293
Jyothi R , Nagaraj G Cholli
Wireless sensor system are accumulation of sensor hubs which send the detected information to sink hub. As sensor hubs are constrained to computational power and vitality asset, a vitality proficient usage of assets are basic keeping in mind the end goal to utilize organize for longer length. Hence data traffic inside network and large amount of data sending to base station need to be reduced. The main goal of data aggregation is to enhance the network life time by gathering an aggregate data in an energy efficient manner. Iterative Filtering algorithm are more reliable and efficient compared to existing method and it provides the way for aggregating the data at secure level and data trustworthiness. In order to strengthen security levels at cluster head cryptographic algorithm such as RSA algorithm is used to encrypt the aggregated data by   using public key and decrypt data at base station by using its own private key. Where this method is responsible for securing the information that is aggregated at cluster head and also secures the information passed through the networks. The simulation results shows that proposed method consumes less computation time, data transmitting, high security and   has a good storage capacity than compared to existing algorithm.
Volume: 11
Issue: 1
Page: 284-293
Publish at: 2018-07-01

Work Process of Bring Your Own Device to Support Green Computing

10.11591/ijeecs.v11.i1.pp137-143
Mohd Yusri Jusoh , Haryani Haron , Jasber Kaur
Bring Your Own Device (BYOD) is a new approach to optimize the use of Information Technology (IT) devices to carry out their work task. The study of BYOD is focused on work activities that perform by IT worker using IT device in public sector. Work activities can provide important insights into IT device portfolio development, end-user segmentation process and the role of IT workers in public sector. The propose of this study is to explore work process of bringing your own devices to support green computing. A conceptual framework of BYOD work process in public sector through integration of IT devices and end-user segmentation to support green computing was developed based on systematic literature review to highlight the implementation of BYOD. This framework considers that work activities based on IT worker, IT device portfolio and end-user segmentation are the main key for public sector to support green computing. This framework is an initial research for researchers and practitioners to further examine BYOD practices in public sector. In addition, to highlight an important gap, this paper explains how different work activities using different IT device influence the IT worker to select the suitable IT device for BYOD that support green computing.
Volume: 11
Issue: 1
Page: 137-143
Publish at: 2018-07-01
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