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29,922 Article Results

Hydraulically operated palm oil loader system design as fresh fruit bunch collector

10.11591/ijeecs.v17.i1.pp228-236
S. Sarip , M. A. Suhot , H. M. Kaidi , M. F. Mohd Noor , S. Abdul Aziz , N. A. Bani , M. S. Noorazizi
Palm oil is one of the main agricultural contributors to Malaysia’s Gross Domestic Product (GDP). Although commercial palm oil plantations have flourished in Malaysia for decades, there is still room for improvement especially in minimizing manpower load and developing efficient machinery to improve the various processes involved in the palm oil industry from estate to the mills. This paper presents a modified towable backhoe to assist in the Fresh Fruit Bunch (FFB) collecting process as an effort to save time. The main objective of this study is to design a machine that can be used by smallholders of oil palm in order to help speed up the work process. With a boom extension and an innovative grabber, the pressure needed to operate the hydraulic system was analyzed to ensure the towable backhoe functioned effectively and fulfilled its objectives. From the calculations done, the maximum pressure that the system can supply is 31.28 MPa which is higher than the 11 MPa minimum required for the hydraulic system to operate.
Volume: 17
Issue: 1
Page: 228-236
Publish at: 2020-01-01

Hierarchy based firefly optimized K-means clustering for complex question answering

10.11591/ijeecs.v17.i1.pp264-272
A. Chandra Obula Reddy , K. Madhavi
Complex Question Answering (CQA) is commonly used for answering community questions which requires human knowledge for answering them. It is essential to find complex question answering system for avoiding the complexities behind the question answering system. In the present work, we proposed Hierarchy based Firefly Optimized k-means Clustering (HFO-KC) method for complex question answering. Initially, the given input query is preprocessed. It eliminates the way of misclassification when comparing the strings. In order to enhance the answer selection process, the obtained keywords are mapped into the candidate solution. After mapping, the obtained keywords are segmented. Each segmentation forms a new query for answer selection and various number of answers selected for each query. Okapi-25 similarity computation is utilized for the process of document retrieval. Then the answers selected are classified with K means clustering which forms the hierarchy for each answer. Finally the firefly optimization algorithm is used for selecting the best quality of answer from the hierarchy.
Volume: 17
Issue: 1
Page: 264-272
Publish at: 2020-01-01

RF energy harvesting prototype operating on multiple frequency bands with advanced power management

10.11591/ijeecs.v17.i1.pp70-77
Manee Sangaran Diagarajan , Agileswari Ramasamy , Navaamsini Boopalan , Norashidah Bt. Md Din
Radio Frequency (RF) harvesting seems to be catching up as an alternate energy source whereby RF energy is scavenged from ambient sources and converted into renewable energy in terms of DC power. This converted DC power is then utilized to power up devices that require a low start up power in which eliminates the need for battery replacement. In this paper, a novel RF energy harvesting prototype is presented which consists of two microstrip patch antennas operating on GSM (900MHz) and WIFI (2.4GHz) & WiMAX (2.3GHz) frequency bands with a bandwidth of 220MHz and 10.11MHz respectively to harvest RF signals from ambience. Two matching networks are presented as well to ensure efficient power transfer to load. Rectifiers are designed to transform the RF signals to DC power. The converted DC signals are then combined and fed to a power management circuit which charges a 4.2V NiMh battery and drives a load at a regulated output of 3V.
Volume: 17
Issue: 1
Page: 70-77
Publish at: 2020-01-01

Review on solar disturbance studies and electric power transmission line fault in Malaysia

10.11591/ijeecs.v17.i1.pp118-125
Mohammad Zakaria Mohd Alias , Mariyam Jamilah Homam , Faridah Hanim Mohd Noh
This work is a review on previous research and studies on the solar disturbance activities and faults that occur on the electric power transmission line. Research has shown that low latitude regions could also be affected by solar disturbance events. The effects of these events on earth are considerable and may cause electric power transmission failure. Geomagnetically induced current is one of the ground impacts to the transmission line, which may cause fault or disturbance and consequently power system failure. Solar disturbance data from magnetometers and electric power transmission line fault data from a digital fault recorder are reviewed in this work. These data would be valuable in determining the characteristics and effects of solar disturbances on Malaysia’s electric power transmission lines.
Volume: 17
Issue: 1
Page: 118-125
Publish at: 2020-01-01

Measure learning effectiveness among children using EEG device and mobile application

10.11591/ijeecs.v17.i1.pp191-196
Magrizef Gasah , Aslina Baharum , Nurul Hidayah Mat Zain
This paper presents a method in measuring the learning effectiveness among children using EEG device and Mobile Application.  In this study, an approach to measure the children learning effectiveness using a mobile learning application and EEG device have been developed. The method used to develop the approach was from the extensive literature review from previous research related to children learning effectiveness and its experimental works. A quantitative method was used to measure the effectiveness of children learning and the result of this experimental work shows that children learning effectiveness can reach nearly 73%. Since lot of teachers and student having trouble in accessing the learning activity whether it was effective or not, this study shown a significant way to solve such problem.
Volume: 17
Issue: 1
Page: 191-196
Publish at: 2020-01-01

An exploratory study in conceptualizing user view on digital taste using design thinking

10.11591/ijeecs.v17.i1.pp379-388
Afdallyna Fathiyah Harun , Juhaida Ismail , Ho Yun Shiang , Nor Laila Md Noor , Hanif Baharin , Saiful Izwan Suliman
Experiencing food involves accumulation of multiple senses, experienced through visuals, auditory and palatability. There has been significant growth in digitizing taste using electrical and thermal components to stimulate taste sensations where users need to lick devices or place a metal peripheral on their tongue. Such unnatural interaction appears undesirable motivating us to explore if taste experience could be stimulated by just viewing food visuals. This places considerable emphasis on understanding user association to food visuals and perceived food taste. Inability to understand their needs before-hand may result into a system with poor potentiality to trigger taste experience and not excite them to try the food they view on a digital platform. Using Design Thinking as an approach, we were able to identify user perceptions and expectations from food visuals as well as their desires on how images could trigger their interest to try the food. This paper presents the findings from the excursions and how this affected our strategy for the next phase of our research.
Volume: 17
Issue: 1
Page: 379-388
Publish at: 2020-01-01

The optimal transmission and dual resonant for different geometrical U-shaped THz nano antenna with surface plasmons (SPs) biosensors

10.11591/ijeecs.v17.i1.pp457-463
Mohanad H. Aljanabi , Ahmed Hussein Duhis , Ahmed Obaid Aftan , Nadia Alanı
In this study, we focus on plasmonic nanoantenna structures for the U shaped. We will do our simulations with FDTD method (finite difference time domain) by considering commercial software Lumerical. We use U-shaped and play with the geometrical parameters such as length (L), width (W), high (H), to enhance the transmission of light. In addition to this, we will consider the different methods and substrates. U-shaped designed structure by using gold and MgF2 materials and studied how to enhance nanoantenna coefficients to get the highest electric field improvement factor and support multi-spectral resonances, that can be tuned from visible to near-IR wavelengths. For the optimum coefficients, the proposed U-shaped nanoantenna reached the optimal transmission and multi-resonant for different geometrical size. In results shows that in this model are wideband range of wavelengths and optimal transmission and all physical boundary conditions are chosen as perfectly matched layer (PML) to avoid undesired reflections, when we change the size of U-shaped with different materials is used and gets more proposes in the biosensors, biomedical and laser optical communication and for nanoantennas can also be deposited on layered substrates to enable solar cells and energy harvesting applications .And we can see that there are two resonances at (𝝺1 and 𝝺2) wavelength range (500-950) nm, the first one has a transmission 0.73 at wavelength 700nm; and the other one has a transmission 0.88 at wavelength 845nm from this designed. We will investigate the structure of nanoantenna to be used as biosensors. 
Volume: 17
Issue: 1
Page: 457-463
Publish at: 2020-01-01

Skew correction for mushaf Al-Quran: a review

10.11591/ijeecs.v17.i1.pp516-523
Salem Saleh Bafjaish , Mohd Sanusi Azmi , Mohammed Nasser Al-Mhiqani , Ahmed Abdalla Sheikh
Skew correction have been studied a lot recently. However, the content of skew correction in these studies is considered less for Arabic scripts compared to other languages. Different scripts of Arabic language are used by people. Mushaf A-Quran is the book of Allah swt and used by many people around the world. Therefore, skew correction of the pages in Mushaf Al-Quran need to be studied carefully. However, during the process of scanning the pages of Mushaf Al-Quran and due to some other factors, skewed images are produced which will affect the holiness of the Mushaf Al-Quran. However, a major difficulty is the process of detecting the skew and correcting it within the page. Therefore, this paper aims to view the most used skew correction techniques for different scripts as cited in the literature. The findings can be used as a basis for researchers who are interested in image processing, image analysis, and computer vision.
Volume: 17
Issue: 1
Page: 516-523
Publish at: 2020-01-01

Electromagnetic radiation of human body before and after intense exercise

10.11591/ijeecs.v17.i1.pp141-147
R.S.S.A. Kadir , Zunairah Hj Murat , Nizaar Suhairy Bin Johari
This paper investigates the electromagnetic radiation (EMR) of the human body before and after intense exercise. The intensity of exercise refers to the rate or the effort at which the activity is being performed. 30 healthy students participated in this research. The data were collected at the specific point of the human body by using a frequency detector. The reading of the frequency was taken 5 times at each point at the same location; hence, the average value is calculated for data analysis. This frequency measurement is recorded two times which is before and after intense exercise with a consistence protocol for all participants. The collected data is analyzed by using MATLAB programming tool which converts the data frequency into 15 colours of bio-energies which symbolizes different energy field score. The score represents the health level of the samples at specific point. From the analysis, higher frequency of EMR is detected after intense exercise compared to before intense exercise. There is also a significant change in the physical health score categories. This indicates that the intense exercise influences the body EMR radiation frequencies.
Volume: 17
Issue: 1
Page: 141-147
Publish at: 2020-01-01

A review on link adaptation techniques for energy efficiency and QoS in IEEE802.11 WLAN

10.11591/ijeecs.v17.i1.pp331-339
Aliya Syahira Mohd Anuar , Wan Norsyafizan W Muhamad , Darmawaty Mohd Ali , Suzi Seroja Sarnin , Norfishah Ab Wahab
Link adaptation is a technique that able to adapt modulation and coding scheme (MCS) based on radio channel conditions. With the exponential increase on the wireless devices nowadays, it contributes to high energy consumption and an increase in carbon dioxide (CO2) emission which contribute to the environmental issue. Researchers have developed proposals to tackle these issues by design algorithms based on link adaptation technique. Nowadays, various link adaptation techniques have been proposed by researchers with target for either Quality of Service (QoS) enhancement as well as energy efficiency. This paper presents A Review on Link Adaptation Techniques for Energy Efficiency and QoS in IEEE802.11 WLAN. In this study, a comprehensive review of the relevant literature published that focus on link adaptation technique in IEEE 802.11 WLAN in improving the energy efficiency and maximize the QoS performance is presented. Link adaptation can be categorized into transmission power control adaptation, transmission data rate adaptation and joint rate adaptation. These adaptations are carried out according to the channel state information (CSI). CSI can be categorized into signal-to-noise ratio (SNR), bit error rate (BER), delay, and queue length.
Volume: 17
Issue: 1
Page: 331-339
Publish at: 2020-01-01

Dependable estimations for education quality using fuzzy logic based strategy a case study (University of Kufa)

10.11591/ijeecs.v17.i1.pp472-480
Adel Al Janabi , Ehsan Ali Kareem , Radhwan Hussein Abdulzhraa Al Sagheer
The consideration that the Iraqi community has concentrated on the training area has delivered another college responsibility routed to superiority viewpoints for all training connected facilities. In truth, a superiority arranged facility necessitates perfection in the structure and arranging of facility exercises, in addition to amid its conveying for the received facility execution assessment strategy. In any case, considering that facility execution assessments are profoundly founded on partners’ decisions, they can be described by conceivable vulnerabilities identified with deficiency for incomplete obliviousness, imprecision for subjectivity and even dubiousness. In this way, underneath these circumstances, temperamental outcomes can be acquired by broadly measured facility investigation strategies. This paper is a strategy dependent an ongoing augmentation of ServQual display and it utilizes a consolidated way of Fuzzy Set Theory of command process technique that is proposed to adequately deal with vulnerability in facility execution examinations. Specifically, Fuzzy Set Theory is measured to manage vulnerability, while AHP strategy is embraced as device to appraise the significance loads of key facility characteristics. In this way, the key investigation of the facility esteem tree identified with the program in University of Kufa is made by using the planned strategy. The completed facility examination permits the most impacting facility execution components to be caught and remarked. At last, acquired outcomes demonstrate that the teachers' view of facility quality definitively impacts by large facility execution level. 
Volume: 17
Issue: 1
Page: 472-480
Publish at: 2020-01-01

Solar powered peltier cooling storage for vaccines in rural areas

10.11591/ijeecs.v17.i1.pp36-46
Henning Buitendach , Immanuel Ninma Jiya , Rupert Gouws
The research presented in this paper proposes a new design of a vaccine cooling and storage unit that can keep vaccines in the cold chain (2°C to 8°C). This design was done to facilitate effective completion of the African vaccination week. The cooling and storage unit was designed to be compact, portable, well isolated and to make use of a PV solar energy system as a source of electricity. The cooling unit makes use of a Liquid to Air thermoelectric cooling module connected to some tubing and a liquid pump to cool the inside of the cooling unit. The design process also included designing a control system that controls the temperature inside the cooling holder and a monitoring system to monitor the battery voltage and capacity. The system also has a user interface that displays the temperatures inside and outside of the cooling holder, as well as the battery voltage and capacity. The cooling system successfully developed was able to keep vaccines in the cold chain for up to three days, the system could control the temperature of the vaccines with an accuracy of 1°C and was small and portable, but still had enough room to house up to 250 vaccines.
Volume: 17
Issue: 1
Page: 36-46
Publish at: 2020-01-01

A new kind of parameter conjugate gradient for unconstrained optimization

10.11591/ijeecs.v17.i1.pp404-411
Basim Abbas Hassan , Hussein O. Dahawi , Azzam S. Younus
In this paper, a replacement new parameter conjugate gradient  for unconstrained optimization. The sufficient descent property cleave to. The global convergence property of the new method is proved under some assumptions. Numerical results explain that the  new parameter is superior  in practice. 
Volume: 17
Issue: 1
Page: 404-411
Publish at: 2020-01-01

Modeling with ontologies design patterns: credit scorecard as a case study

10.11591/ijeecs.v17.i1.pp429-439
Jalil Elhassouni , Abderrahim El Qadi , Mehdi Bazzi , Mohamed El Haziti
This paper proposes an ontological scorecard model for credit risk management. The purpose of credit scoring model is to reduce the possibility of potential losses with regard to issued loans. Loans are provided according to strict criteria which contain information about the client, loan structure, the purpose, repayment source and collateral. Several techniques have been used for credit risk assessment before granting a loan. Ontology design patterns is used here to enable the implementation of domain knowledge using the OWL rules and to improve the decision making process in credit monitoring. The modeling of our ontology will make the data publication simpler and graph structures intuitive, thus making its reusability and expandability easier.
Volume: 17
Issue: 1
Page: 429-439
Publish at: 2020-01-01

Requirements engineering for User-Centered school food ordering system

10.11591/ijeecs.v17.i1.pp357-364
Diyana Binti Halim Khoo , Afdallyna Fathiyah Harun , Saiful Izwan Suliman
Understanding user requirement for a technology design is central to user experience. A user-centered technology design should consider user needs and constraints as well as abide to the principles of HCI design heuristics. This paper describes the requirements gathering for Kantin Online System, a school food ordering system where we considered the needs and constraints of different stakeholders involved and elicit a compromise where the needs of all parties can be met. We then applied usability heuristics into the system design to facilitate perceived ease of use and perceived usefulness. We conclude this paper with experts’ evaluations towards the heuristic elements of the system design concept and possible future work.
Volume: 17
Issue: 1
Page: 357-364
Publish at: 2020-01-01
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