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31,456 Article Results

Video content analysis and retrieval system using video storytelling and indexing techniques

10.11591/ijece.v10i6.pp6019-6025
Jaimon Jacob , M. Sudheep Elayidom , V. P. Devassia
Videos are used often for communicating ideas, concepts, experience, and situations, because of the significant advances made in video communication technology. The social media platforms enhanced the video usage expeditiously. At, present, recognition of a video is done, using the metadata like video title, video descriptions, and video thumbnails. There are situations like video searcher requires only a video clip on a specific topic from a long video. This paper proposes a novel methodology for the analysis of video content and using video storytelling and indexing techniques for the retrieval of the intended video clip from a long duration video. Video storytelling technique is used for video content analysis and to produce a description of the video. The video description thus created is used for preparation of an index using wormhole algorithm, guarantying the search of a keyword of definite length L, within the minimum worst-case time. This video index can be used by video searching algorithm to retrieve the relevant part of the video by virtue of the frequency of the word in the keyword search of the video index. Instead of downloading and transferring a whole video, the user can download or transfer the specifically necessary video clip. The network constraints associated with the transfer of videos are considerably addressed.
Volume: 10
Issue: 6
Page: 6019-6025
Publish at: 2020-12-01

Spectrum sensing of wideband signals based on cyclostationary and compressive sensing

10.11591/ijeecs.v20.i3.pp1361-1368
Ali Mohammad A. AL-Hussain , Maher K. Mahmood Al Azawi
Compressive sensing is a powerful technique used to overcome the problem of high sampling rate when dealing with wideband signal spectrum sensing which leads to high speed analogue to digital convertor (ADC) accompanied with large hardware complexity, high processing time, long duration of signal spectrum acquisition and high consumption power. Cyclostationary based detection with compressive technique will be studied and discussed in this paper. To perform the compressive sensing technique, discrete cosine transform (DCT) is used as sparse representation basis of received signal and Gaussian random matrix as a sensing matrix, and then 𝓁1- norm recovery algorithm is used to recover the original signal. This signal is used with cyclostationary detector. The probability of detection as a function of SNR and the probability of false alarm as a function of SNR with several compression ratios and processing time are used as performance parameters. The effect of the recovery error of reconstruction algorithm is presented as a function of probability of detection. Simulation results show that the performance of the system is maintained even at high compression.
Volume: 20
Issue: 3
Page: 1361-1368
Publish at: 2020-12-01

Examining factors that effect on the acceptance of mobile commerce in Malaysia based on revised UTAUT

10.11591/ijeecs.v20.i3.pp1173-1184
Mohammed A. Sabri Alrawi , Ganthan Narayana Samy , Rasimah Che Mohd Yusoff , Bharanidharan Shanmugam , Rajasekaran Lakshmiganthan , Nurazean Maarop , Norshaliza Kamaruddin
This study presents an amended unified theory of acceptance and use of technology (UTAUT) which explores key factors affecting Malaysian consumers ' willingness to accept mobile-commerce. A questionnaire survey has been used to collect information from 400 Malaysian smartphone users using a random stratified sample and analyzed using structural equation modelling (SEM); with the use of Smart PLS 3.0. Results show that acceptance and use of mobile-commerce services can also be predicted by the behavioural intentions of users, whose performance expectancy, efforts expectations, social effects, mobility, personal innovations and perceived trust are significantly affected. From these variables, perceived trust is the most significant determinant that directly affects behavioural intention to use mobile-commerce services in Malaysia. It is then followed by mobility, personal innovation, social influence, performance expectancy then effect expectancy. Facilitating Conditions and moderating variables such as gender, age, education, income, marital status, experience and payment have no significant effect on Behavioral Intention to use mobile-commerce services in Malaysia. In conclusion, this study shows that behavioural intention and the use of mobile commerce services in Malaysia have a direct effect. The study will help dealers to avoid spending thousands of dollars on investments that have little impact on whether the customer is embracing and using mobile-commerce. The study also provides quantified indicators and offers a framework for the understanding of the Malaysia mobile-commerce system. The report concludes with a study of the effects of the research findings and provides recommendations for future research.
Volume: 20
Issue: 3
Page: 1173-1184
Publish at: 2020-12-01

Tool delivery robot using convolutional neural network

10.11591/ijece.v10i6.pp6300-6308
Javier Pinzon-Arenas , Robinson Jimenez-Moreno
In the following article, it is presented a human-robot interaction system where algorithms were developed to control the movement of a manipulator in order to allow it to search and deliver, in the hand of the user, a desired tool with a certain orientation. A Convolutional Neural Network (CNN) was used to detect and recognize the user's hand, geometric analysis for the adjustment of the delivery status of the tool from any position of the robot and any orientation of the gripper, and a trajectory planning algorithm for the movement of the manipulator. It was possible to use the activations of a CNN developed in previous works for the detection of the position and orientation of the hand in the workspace and thus track it in real time, both in a simulated environment and in a real environment.
Volume: 10
Issue: 6
Page: 6300-6308
Publish at: 2020-12-01

Influence of social media on students’ academic achievement

10.11591/ijere.v9i4.20638
Basil Chinecherem Oguguo , Juliet O. Ajuonuma , Roseline Azubuike , Catherine U. Ene , Florence O. Atta , Chidimma J. Oko
This study determined the influence of using social media on the academic achievement of senior secondary school students. A sample of 150 students comprising 70 males and 80 females were drawn from five schools and used for the study, this was arrived at through multi-stage sampling procedure. Social Media Questionnaire (SMQ) and Students’ Accounting Achievement Proforma (SAAP) were used for data collection. The result showed that students frequently engage in social media in order to make new friends, research about their assignments and source for other educational materials, stay up to dates with latest trends and news. The finding also showed that students spend an average, 2 to 4 hours daily on social media. There was no significant influence of frequency of social media use by students on their mean academic achievements in Accounting; however, gender of students was found to have a significant influence on students’ mean academic achievement in Accounting. Students should be guided properly and informed on the vulnerabilities likely to come their way if they fail to appropriately utilize the opportunities that come with having social media platforms.
Volume: 9
Issue: 4
Page: 1000-1009
Publish at: 2020-12-01

Real-time monitoring and control of flow rate in transportation pipelines using Matlab-based interactive GUI and PID controller

10.11591/ijpeds.v11.i4.pp1767-1774
S. Vijayalakshmi , C. Anuradha , R. C. Ilambirai , Viswanathan Ganesh
In this paper, a Matlab based GUI and Propotinal Integral Dervative (PID) controller is designed to automatically regulate the flow-rate of the circulating fluid. When fluids are transported over long distances, the pressure and flow rate have to be monitored remotely in a control room. Using an HMI or Control Panels the flow rate can be increased or decreased to compensate for pressure drops or disturbances. This paper attempts to demonstrate such an Industrial Control Operation in a scaled-down environment. A Graphical User Interface or GUI is constructed which enables the Operator to monitor, as well as control an electronically actuated Control Valve which can efficiently regulate the flow-rate. Automatic operations have also been implemented using a PID controller algorithm, which tries to track the Set-point in Real-time.
Volume: 11
Issue: 4
Page: 1767-1774
Publish at: 2020-12-01

Biometric and RFID based authentication system for exam paper leakages detection using IoT technology

10.11591/ijeecs.v20.i3.pp1271-1277
J. Ann Roseela , T. Godhavari
Education is the soul of a community; it goes from one generation to another. Exam is the prime responsibility of an educational framework. The reason for an examination is to select talented applicants for multiple positions. Exam is an important aspect of the education system to test students' abilities online and in oral papers. Every year we receive deferred/canceled exam messages due to paper leakage. Therefore, we have come up with a affordable and concise outcome, and we have decided to design and implement the "Exam Paper Leak Protection Framework", which will be a much more secure structure depending on the controller. Together with RFID Reader, Fingerprints sensor, Buzzer, LCD, and Wi-Fi module. First, the university will send a selection sheet to an educational institution "electronic sealed box" known the "electronic control box". Electronic control box is a prototype that can be proposed using controller, and the RTC to display the current date and time. If anybody tries to intrude the box the buzzer will beep and alert message will be send to the university.
Volume: 20
Issue: 3
Page: 1271-1277
Publish at: 2020-12-01

A hybrid control system for investigating a high level of decision in internet of things

10.11591/ijeecs.v20.i3.pp1419-1426
Mohanad Ali Meteab Al-Obaidi , Basim Jamil Ali , Jamila H. Saud , Tole Sutikno
In the modern world, the search started for cheap and efficient operating system sources has begun can converted to civilian ends. Internet of things (IoT) is one of the most realistic applications for remote control and remote management using a wide network. In this paper, a control system is designed and built to manage and control traffic lights and street lighting systems, as well as turning on/off generators in a small virtual environment. This was implemented by designing and building a hybrid electronic circuit that combines the closed-circuit control system and the open circuit system. The closed circuit regulates the system according to the desired condition without operator interaction; while the open circuit operates on demand. This type of a hybrid control system demonstrated its high flexibility by controlling devices and its high efficiency compared to the closed circuit and the open circuit system independently. It also helps reduce the number of maintenance guys and energy consumption as well as the cost
Volume: 20
Issue: 3
Page: 1419-1426
Publish at: 2020-12-01

Motor side active power filter for induction motor

10.11591/ijpeds.v11.i4.pp1711-1718
H.V. Gururaja Rao , R.C Mala , Ambika Joshi
Power quality is an important aspect in electrical distribution and utilization systems. Variable frequency drive (VFD) controlled induction motors are widely used in industries. The output current of VFD which is nonsinusoidal is given to the induction motor. This paper proposes a motor side active power filter (MSAPF) so as to provide a pure sinusoidal current to the induction motor. An evaluation of two control strategies has been discussed in this paper i.e. Synchronous Reference Frame (SRF) theory and Instantaneous Reactive Power theory (IRPT) in the generation of the reference signal. These techniques are simulated in MATLAB/SIMULINK environment. These simulations demonstrate the reduction in total harmonic distortion (THD) in the motor current with active filter connected to the motor side.
Volume: 11
Issue: 4
Page: 1711-1718
Publish at: 2020-12-01

Photovoltaic array maximum power point tracking via modified perturbation and observation algorithm

10.11591/ijpeds.v11.i4.pp2007-2018
Bahaa Abdulkhaliq Numan , Amina Mahmoud Shakir , Anas Lateef Mahmood
One drawback of PVs is their low efficiency. As the PVs have a unique maximum Power Point for a specified irradiation level, there must be an effective method for extracting maximum power from the PV module to raise the efficiency. Conventional Perturbation and Observation (P&O) is a simple algorithm for maximum power point tracking (MPPT) but it suffers from oscillation during steady state conditions and is deviated from the maximum power point during slow and rapid irradiation level change. This paper presents a modified P&O by adding variation in PV current as a third in addition to the voltage and power variation parameters. This new algorithm is capable of eliminating the MPPT deviation. To increase the perturbation speed, a double step is taken as the tracking is deviated from the MPP. The modified P&O algorithm is used to control the duty cycle of DC-DC buck converter. The simulation shows that the modified P&O is faster than the conventional. The power loss due to oscillation before attaining the steady state is less for modified P&O. For slow irradiation level change (ramp up 600 to 1000 and ramp down 1000-800) W/m2, the modified P&O shows less tracking diverge. As the irradiation level changes rapidly from 800 to 200 W/m2, it's shown that the modified algorithm attains the steady state faster than the conventional P&O and the average efficiency increased by 4.34%.
Volume: 11
Issue: 4
Page: 2007-2018
Publish at: 2020-12-01

Modulation index effect on inverter based induction motor drive

10.11591/ijpeds.v11.i4.pp1785-1798
Akhilesh Sharma , Anandh N. , Sarsing Gao
Due to a substantial increase in the use of inverter for numerous electrical appliances starting from domestics to industrial drives, an inverter may be directly connected to the power grid system. The dependency on an inverter has been increased over the years. Hence, the proper and efficient design of the inverter will lead to higher efficiency. One of the major challenges is the generation of suitable gate pulses for power switching devices, which in turn depends on the modulation index. The selection of proper modulation index will help in the production of the rated voltage. If the modulation index is less, the duration of on-time pulses will be less and hence, the device's conduction time is also less, thereby the output voltage of the inverter is reduced. A reduced voltage, when applied to an induction motor will have lower speed and even its performance will be sluggish. The speed of the motor improves when it is operated in a closed-loop for the same modulation index. This research paper tries to bring out the effect of modulation index on speed control of an induction motor based on an inverter for both open as well as closed-loop operation. The simulated results indicate that the modulation index in the vicinity to unity will provide rated voltage for the smooth operation of the motor.
Volume: 11
Issue: 4
Page: 1785-1798
Publish at: 2020-12-01

Induction drive system with DSTATCOM based asymmetric twin converter

10.11591/ijpeds.v11.i4.pp1826-1834
P Anusha , B V Rajanna
High power demands are usually met by advanced power electronics converters in several large utility and electric drives applications. Applications from high power drives commonly uses solution based multi pulse and multilevel converters. A common DC link with atleast one voltage source converter (VSC) working with almost fundamental switching frequency are used in converters of multipulse type, and each output module is connected with the multipulse transformer in series. When compared to that of solution with single-VSC, Several VSCs generating different triggering pulses are adjused in order to achieve current injected with low specified total harmonic distortion (THD) with losses of abridged switching. Huge structure in complexity and expensive cost expenditure of the multipulse transformer is the major limitation of this scheme. DC link split capacitors in addition are eliminated by modifying the topology of the circuit. Thus, the independent voltages of the DC capacitor are controlled and decreased in number and the flow of third harmonic current component in the transformer is eliminated. The scheme of the designed controller is depending on the derived mathematical system model. Simulaion observation is used to check the scheme performance and efficiency in a detailed way with drive control technique.
Volume: 11
Issue: 4
Page: 1826-1834
Publish at: 2020-12-01

Business students’ perspectives: What makes successful group performance?

10.11591/ijere.v9i4.20534
Rinny Cherill Rantung , Reggy Nelson Sarmita
Purpose of this study was to identify factors contributing to the successful group performance from the perspective of business students. The in-depth interview was done followed by a survey derived forty-five items variables, after some tests 21 items variables removed due to low item remainder coefficient resulted in 24 items questionnaires. A total of 355 respondents participated during the survey. Exploratory factor analysis with principal factor extraction was performed and five contributing factors were extracted. Those factors are cohesiveness, inter-relationship, norms, diversity and appointed of team leader.
Volume: 9
Issue: 4
Page: 896-902
Publish at: 2020-12-01

Silicon carbide power device characteristics, applications and challenges: an overview

10.11591/ijpeds.v11.i4.pp2194-2202
Muhamad Faizal Yaakub , Mohd Amran Mohd Radzi , Faridah Hanim Mohd Noh , Maaspaliza Azri
Silicon (Si) based power devices have been employed in most high power applications since decades ago. However, nowadays, most major applications demand higher efficiency and power density due to various reasons. The previously well-known Si devices, unfortunately, have reached their performance limitation to cover all those requirements. Therefore, Silicon Carbide (SiC) with its unique and astonishing characteristic has gained huge attention, particularly in the power electronics field. Comparing both, SiC presents a remarkable ability to enhance overall system performance and the transition from Si to SiC is crucial. With regard to its importance, this paper provides an overview of the characteristics, advantages, and outstanding capabilities in various application for SiC devices. Furthermore, it is also important to disclose the system design challenges, which are discussed at the end of the paper.
Volume: 11
Issue: 4
Page: 2194-2202
Publish at: 2020-12-01

Performance evaluation of wireless data traffic in mm Wave massive MIMO communication

10.11591/ijeecs.v20.i3.pp1342-1350
Ahmed Thair Al-Heety , Mohammad Tariqul Islam , Ahmed Hashim Rashid , Hasanain N. Abd Ali , Ali Mohammed Fadil , Farah Arabian
Due to the evaluation of mobile devices and applications in the current decade, a new direction for wireless networks has emerged. The general consensus about the future 5G network is that the following should be taken into account; the purpose of thousand-fold system capacity, hundredfold energy efficiency, lower latency, and smooth connectivity. The massive multiple-input multiple-output (MIMO), as well as the Millimeter wave (mm Wave) have been considered in the ultra-dense cellular network (UDN), because they are viewed as the emergent solution for the next generations of communication. This article focuses on evaluating and discussing the performance of mm Wave massive MIMO for ultra-dense network, which is one of the major technologies for the 5G wireless network. More so, the energy efficiencies of two kinds of architectures for wireless backhaul networks were investigated and compared in this article. The results of the simulation revealed some points that should be considered during the deployment of small cells in the two architectures UDN with backhaul network capacity and backhaul energy efficiency, that the changing the frequency bands in Distribution approach gives the same energy efficiency reached to 600 Mb/s at 15 nodes while the Conventional approach results reached less than 100 Mb/s at the same number of nodes.
Volume: 20
Issue: 3
Page: 1342-1350
Publish at: 2020-12-01
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