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31,456 Article Results

Flower and leaf recognition for plant identification using convolutional neural network

10.11591/ijeecs.v16.i2.pp737-743
Nurul FatihahSahidan , Ahmad Khairi Juha , Norasiah Mohammad , Zaidah Ibrahim
This paper presents flower and leaf recognition for plant identification using Convolutional Neural Network (CNN). In this study, the performance of CNN for plant identification using images of the leaves, flowers and a combination of both are investigated.  Two publicly available datasets, namely Folio leaf dataset and Flower Recognition dataset, have been used for the training and testing purposes.  CNN has been proven to produce excellent results for object recognition but its performance can still be influenced by the type of images and the number of layers of the CNN architecture.   Experimental results indicate that the utilization of leaf images only arrive to the highest accuracy for plant identification compared to the images of flowers only or the combination of both, that are 98%, 85% and 74%, respectively.
Volume: 16
Issue: 2
Page: 737-743
Publish at: 2019-11-01

A new compression technique in MANET: compressed-LZW algorithm

10.11591/ijeecs.v16.i2.pp890-896
Hadeel Noori Saad , Fairouz mushtaq Jafar , Hanan Abbas Salman
Now a days mobile ad hoc networks MANETs play a vital role in tremendous communication applications. This networks require infrastructure less module in non- centralized application’s area. Low battery power is of great concern to sustain for a long time, thus researchers try to assist in this critical maintenance point. This work proposed an enhanced version of well-known compression technique LZW to reduce data communication and maintain battery life. Compressed-LZW is a technique to code data stream into further compact form by merging successive redundant compressed code, and achieved by padding the code stream with the displacement of the next similar code. Compressed-LZW outperform its successor in saving consumed energy as expressed in the implementation and results by generating less output codes.
Volume: 16
Issue: 2
Page: 890-896
Publish at: 2019-11-01

Link-state QoS routing protocol under various mobility models

10.11591/ijeecs.v16.i2.pp906-916
Safaa Laqtib , Khalid El Yassini , Moulay Lahcen Hasnaoui
Mobile Ad Hoc Network (MANET) consists of a group of mobile or wireless nodes that are placed randomly and dynamically that causes the continual change between nodes. A mobility model attempts to mimic the movement of real mobile nodes that change the speed and direction with time. The mobility model that accurately represents the characteristics of the mobile nodes in an ad hoc network is the key to examine whether a given protocol. The aim of this paper is to compare the performance of four different mobility models (i.e. Random Waypoint, Random Direction, Random walk, and Steady-State Random Waypoint) in MANET. These models were configured with Optimized Link State Routing (OLSR) protocol under three QoS (Quality of Service) metrics such as the Packet Delivery Ratio (PDR), Throughput, End-to-End delay. The simulation results show the effectiveness of Steady-State Random Waypoint Mobility Models and encourage further investigations to extend it in order to guarantee other QoS requirements.
Volume: 16
Issue: 2
Page: 906-916
Publish at: 2019-11-01

Stress catcher application for mobile stress monitoring using questionnaire-based

10.11591/ijeecs.v16.i2.pp917-924
Aslina Baharum , Siti Hasnah Tanalol , Cheng Xu Jian , Muhammad Omar , Noorsidi Aizuddin Mat Noor , Nurhafizah Moziyana Mohd Yusop
Nowadays, stress has become the main reason to cause health problems. The human’s lifestyle has been increasing due to the fast development of technologies which help to improve performance and productivity indirectly increased the burden of human lifestyle. Many studies have done to identify the cause of stress and the effect of stress among university students. However, stress monitoring is not well mentioned in the previous works especially stress monitoring with questionnaire-based. Thus, this research tried to come out with a mobile application that fit to use to monitor the stress level by using a questionnaire. Mobile-D used to identify and develop the mobile application, namely as Stress Catcher. Mobile-D approach allows Test-driven development and it is suitable to use for mobile applications development. A prototype of Stress Catcher will function to prove the usefulness in human lifestyle.
Volume: 16
Issue: 2
Page: 917-924
Publish at: 2019-11-01

Two-chambers soft actuator bending and rotational properties for underwater application

10.11591/ijeecs.v16.i2.pp669-677
Muhammad Rusydi Muhammad Razif , Ahmad Athif Faudzi , Ili Najaa Aimi Mohd Nordin , Tariq Rehman , Dyah Ekashanti Octorina Dewi
This paper presents a study on bending and rotational properties of two-chambers soft actuator for underwater application. Previous study demonstrated the actuator characteristics required to optimize the bending performance and its potential to perform underwater because of the actuator material. However, there is less study of the actuator performance underwater as well as how the actuator tips rotating during actuator bending motion. In this paper, three tests have been proposed which are comparisons of bending angle simulation and experiment in air environment, bending angle performance in air and underwater environment as well as rotational angle of actuator tip in air environment. The bending angle of soft actuator is measured based on displacement in horizontal and vertical axis and for rotational angle, gyro sensor has been used. Based on the analysis, it is proven that the fabricated soft actuator performs almost similar trend to the simulation. It is also demonstrated that the actuator performs almost double bending motion underwater environment compared to in air environment at the same pressure, and the actuator is able to rotate 90º in air environment with the supplied pressure 52 kPa.
Volume: 16
Issue: 2
Page: 669-677
Publish at: 2019-11-01

Voiced and unvoiced separation in malay speech using zero crossing rate and energy

10.11591/ijeecs.v16.i2.pp775-780
Rafizah Mohd Hanifa , Khalid Isa , Shamsul Mohamad , Shaharil Mohd Shah , Shelena Soosay Nathan , Rosni Ramle , Mazniha Berahim
This paper contributes to the literature on voice-recognition in the context of non-English language. Specifically, it aims to validate the techniques used to present the basic characteristics of speech, viz. voiced and unvoiced, that need to be evaluated when analysing speech signals. Zero Crossing Rate (ZCR) and Short Time Energy (STE) are used in this paper to perform signal pre-processing of continuous Malay speech to separate the voiced and unvoiced parts. The study is based on non-real time data which was developed from a collection of audio speeches. The signal is assessed using ZCR and STE for comparison purposes. The results revealed that ZCR are low for voiced part and high for unvoiced part whereas the STE is high for voiced part and low for unvoiced part. Thus, these two techniques can be used effectively for separating voiced and unvoiced for continuous Malay speech.
Volume: 16
Issue: 2
Page: 775-780
Publish at: 2019-11-01

Hybridisation of battery, supercapacitor and hybrid capacitor for load applications with high crest factors: a case study of electric vehicles

10.11591/ijeecs.v16.i2.pp614-622
Immanuel Ninma Jiya , Nicoloy Gurusinghe , Rupert Gouws
This paper proposes a novel topology of hybridizing battery, supercapacitor and hybrid capacitor for optimum utilization of energy in electric vehicles. Hybridization of energy storage has been the theme of much research in the field of power electronics as it is an effective economic solution towards improving the utilization of energy. Batteries have fallen short in comparison to both supercapacitors and hybrid capacitors because of their low power density and limited charge-discharge cycle. Most of the previous research in this field focuses on hybridizing either supercapacitor or hybrid capacitor with the battery but not both. This paper deals with the combination of both supercapacitor and hybrid capacitor with the battery thus addressing the problem of the lack of autonomy between two recharge points in supercapacitors, three hybridization techniques are considered and the balance point of the supercapacitor and hybrid capacitor banks is presented. The prospects of using a multiple-input DC-DC converter is also analyzed. An experimental electric vehicle profile was used to verify the proposed topology and the results are presented. The application of the novel hybridization of the three energy storage devices can be extended to other applications having a load profile with high crest factors.
Volume: 16
Issue: 2
Page: 614-622
Publish at: 2019-11-01

A two-step feature selection method for quranic text classification

10.11591/ijeecs.v16.i2.pp730-736
A. Adeleke , N. A. Samsudin , Z. A. Othman , S. K. Ahmad Khalid
Feature selection is an integral phase in text classification problems. It is primarily applied in preprocessing text data prior to labeling. However, there exist some limitations with the FS techniques. The filter-based FS techniques have the drawback of lower accuracy performance while the wrapper-based techniques are highly computationally expensive to process. In this paper, a two-step FS method is presented. In the first step, chisquare (CH) filter-based technique is used to reduce the dimensionality of the feature set and then wrapper correlation-based (CFS) technique is employed in the second step to further select most relevant features from the reduced feature set. Specifically, the ultimate aim is to reduce the computational runtime while achieving high classification accuracy. Subsequently, the proposed method was applied in labeling instances of the input data (Quranic verses) using standard classifiers: naïve bayes (NB), support vector machine (SVM), decision trees (J48). The results report the proposed method achieved accuracy result of 93.6% at 4.17secs.
Volume: 16
Issue: 2
Page: 730-736
Publish at: 2019-11-01

New Optimized Reconfigurable ALU Design Based on DG-CNTFET Nanotechnology

10.11591/ijres.v7.i3.pp195-202
Houda Ghabri , Dalenda Ben Issa , Hekmet Samet
The heart of the microprocessor and responsible for the execution of logical and arithmetic operations, the arithmetic and logical unit is constantly optimized. The performance is improved to allow the development of more powerful and smaller circuits. This paper describes simple ALU but contains the essentials functions. It is a reconfigurable ALU based on double-gate carbon nanotube field effect transistor (DG-CNTFETs). This transistor has an interesting property, it can switch from p- to n- type behavior and vice-versa dynamically. This opens the opportunity for building novel and complex functions in fine-grain reconfigurable logic inaccessible to MOSFETs and reaching a good performance levels. In literature there are several problems related to signal quality. In this paper, we will propose a new solution that allows us to improve the quality of the output signal without affecting the number of transistors used. This improves the overall performance of ALU. We will show the improvement in signal level and quality. First, an overview of carbon nanotube field-effect transistor (CNTFET) and state of the art Reconfigurable ALU based on DG-CNTFET is given. Then an explication of signal integrity issues of the actual Reconfigurable DG-CNTFET cell is done. After we will present and explain the proposed solution. The solution is first applied on the cnt_9T circuit then will show its effect on the ALU. Finally, a performance comparison is made.
Volume: 7
Issue: 3
Page: 195-202
Publish at: 2019-11-01

Outage probability analysis of dual energy harvesting relay network over rayleigh fading channel using SC and MRC technique

10.11591/ijeecs.v16.i2.pp803-811
Tan N. Nguyen , Minh Tran , Van-Duc Phan , Tran Thanh Trang
In this paper, the system model of dual-energy harvesting relay network over Rayleigh fading channel and the comparison between Selecting Combining (SC) and Maximal Ratio Combining (MRC) technique cases are proposed and investigated. The closed-form expression of the outage probability for the SC case and the integral-form expression of the outage probability for MRC case is derived. Moreover, the influence of the main parameters on the system performance is demonstrated entirely by the Monte Carlo simulation. From the results, we can see that all simulation and analytical results match well with each other.
Volume: 16
Issue: 2
Page: 803-811
Publish at: 2019-11-01

Outage probability analysis of DF PSR energy harvesting full-duplex relaying network with presence of the direct link using MRC technique

10.11591/ijeecs.v16.i2.pp606-613
Van-Duc Phan , Phu Tran Tin , Minh Tran , Tran Thanh Trang
In the last time, the system performance of the energy harvesting relay network has been considered in many studies. In this paper, we propose and investigate the outage probability (OP) of the Decode-and-Forward (DF) Energy Harvesting (EH) Full-Duplex (FD) Relaying network in Power Splitting Protocol (PS) using MRC Technique with the presence of the direct link. In the first stage, the integral form of the OP is derived in two cases with and without the presence of the direct link. After that, we analyze the influence of main system parameters on the OP and comparison between two cases with and without the presence of the direct link. Finally, the results show that all simulation and analytical results match well with each other based on the Monte Carlo verification simulation.
Volume: 16
Issue: 2
Page: 606-613
Publish at: 2019-11-01

Principles of reforming an agile-compliant performance appraisal

10.11591/ijeecs.v16.i2.pp1009-1017
Mawarny Md. Rejab , Mazni Omar , Mazida Ahmad , Syahida Hassan
This paper presents principles of reforming an Agile-compliant performance appraisal. In this study, several semi-structured interviews have been carried out and discovered eight principles for reforming an Agile-compliant performance appraisal for Agile teams. Performance appraisal for software engineers in an Agile software development environment is complex and different from the traditional software development.  Performance appraisal should be aligned to Agile values, principles, and practices, which advocate interactions, collaborations, teamwork, and knowledge transfer among Agile team members. Therefore, a transition to Agile Software Development requires the implementation of Agile-compliant performance appraisal. These principles embark the proper practices and guidance to support management and Agile teams in deriving and implementing an Agile-compliant performance appraisal. Therefore, the emerged principles can be a baseline in generating an Agile-compliant performance appraisal to assess Agile team members in a fair and consistent manner. This indirectly increases motivation amongst team members and tends to produce capable workforce to perform at a higher level.
Volume: 16
Issue: 2
Page: 1009-1017
Publish at: 2019-11-01

Security assessment of four open source software systems

10.11591/ijeecs.v16.i2.pp860-881
Faraz Idris Khan , Yasir Javed , Mamdouh Alenezi
Incorporating Open Source Software (OSS) tools in software development is increasing day by day due to their accessibility on the internet. With the advantages of OSS comes disadvantages in terms of security vulnerabilities. Therefore, in this paper, we analyzed four famous open source software tools (i.e. Moodle, Joomla, Flask and VLC media player) which are used by software developers nowadays. For the analysis of each system, security vulnerabilities and weakness were identified, threat models were modeled,and code inspection was performed. The findings are discussed in more details.
Volume: 16
Issue: 2
Page: 860-881
Publish at: 2019-11-01

Academician perceptions towards online student evaluation

10.11591/ijeecs.v16.i2.pp995-1001
Nor Hapiza Mohd Ariffin , Siti Nor Hidayah Askol
In higher education institutions, student evaluation is important to ensure that students are given the opportunity to attain a high quality of education. In Universiti Teknologi Mara (UiTM) Malaysia, student evaluation was implemented through a system called Student Feedback Online (SuFO). This study aims to investigate and analyze the perception of academicians towards the usage of online student evaluation using SUFO in UiTM.  The research employed the quantitative analysis and supported by Rasch measurement. The respondents are academicians in UiTM Shah Alam. A total of 152 academicians responded to the questionnaires.  By using a Likert scale, 25 items were designed in the questionnaire and distributed by official email to the academicians.  Data were analyzed using Rasch measurement to measure the validity and reliability of the items and the respondents involved in this research, while SPSS was used to analyze the quantitative data.  The results showed that the academicians accepted the outcome value of student evaluation and they agreed that results of student evaluation should be used for formative assessment. It is recommended for future research, an instrument using a method of multi-dimensional evaluation of teaching should be developed to evaluate the effectiveness of university teaching.
Volume: 16
Issue: 2
Page: 995-1001
Publish at: 2019-11-01

Engaging youths in skill development through network system wiring workshop in rural area

10.11591/ijeecs.v16.i2.pp950-955
Hazilah Mad Kaidi , Norulhusna Ahmad , Nor Fazilah Mohd Hashim , Fatimah Salim , Mohd Nabil Muhtazaruddin , Nurul Aini Bani , Norliza Mohamed , Rafizah Musa , Siti Armiza Mohd Aris , Siti Zura A Jalil
Nowadays, youths underuse their time, energy and creativity in a vast number of other activities, which lead to almost nothing in return. Thus, to fully utilise their huge potential of skills and abilities is by offering productive ways to attract young people in educational-related activities. This paper is presenting the community project on the network wiring system workshop that has been conducted for the young generation at Kg. Serting Ulu, Simpang Pertang Jempol, Negeri Sembilan, Malaysia. The aim of participating in this project is to deliver the knowledge base and develop skills in technology and engineering. In addition, it is also intended to develop interpersonal skills, communication and lifelong learning as well as to increase the ability of a young generation to generate a side income by venturing into entrepreneurship field. Participants in this network system wiring workshop were exposed to a multitude of basic installation and wiring techniques in which they were able to shape their personalities with the advantage of acquired technology and engineering skills. As a result, the return on investment (RoI) and social return on investment (SRoI) targets for the workshop can be achieved. It was conducted at a rural area named as Kampung Serting Ulu, Simpang Pertang Jempol, Negeri Sembilan, Malaysia. 
Volume: 16
Issue: 2
Page: 950-955
Publish at: 2019-11-01
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