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29,602 Article Results

A Compact Bandpass Filter Using A T-Shaped Loaded Open-ended Stub Resonator

10.11591/ijeecs.v10.i3.pp867-874
Ali Nyangwarimam Obadiah , Mohamad Rijal Hamid , Mohamad Kamal Abd Rahim , Noor Asniza Murad
This paper proposes a compact bandpass filter using a loaded open-ended T-shaped stub. The open-ended T-shaped stub is loaded with vertical resonators placed across. The key advantage of using vertical resonators in the design is the simplicity and low insertion loss it provides. The structure used is an open-ended stub attached on one end to the transmission line (λ/2) to form a T-shaped resonator (λ/4) having vertical resonators placed across. The vertical resonator position alters the position at which the transmission zero occurs. A pair of the T-shaped resonator is placed on parallel sides of the feed line. The proposed filter is designed with the aid of Computer Simulation Technology Microwave Studio Software. The proposed concept is verified by designing filters with four different vertical resonator positions. The filter possesses a good rejection and low insertion loss of < 2dB with Chebyshev response. This filter is suited for modern-day communication applications since it shows good rejection of out of band signals.
Volume: 10
Issue: 3
Page: 867-874
Publish at: 2018-06-01

Soil-transmitted Helminths Infection among Primary School Students: which Policy bhould be Emphasized?

10.11591/ijphs.v7i2.12940
Bumi Zulheri Herman , Ranisa Handayani Ramlan , Ferawati Rahmat Wahab
Soil Transmitted Helminths is a neglected disease and remain untouched in Balikpapan despite of its deteriorating effects on child health. A cross-sectional study to reveal the actual infection among school-age children in Balikpapan was conducted from January-March 2016 involved 101 students from 10 schools. All subjects and parents were interviewed using validated questionnaire followed by stool examination. All data underwent univariate and bivariate test using fisher exact’s test, ANOVA and logistic regression test (95% CI).  Rate of positive infection was 62.4%. Associated risk factors were, routine hand wash (p=0.004 OR=0.050), taking oral prophylaxis (p=0.001 OR=0.182), use of footwear (p=0.009 OR=2.529), involved in “Young Doctor Program” or other health promotion program (p=0.014 OR 0.324) and the type of toilet at home (p=0.048). Knowledge about worm infection (p=0.659), history of previous worm infection (p=0.768) and access to clean water at home (p=0.361) were insignificantly associated with infection rate. Community service (such as “The Clean, Green And Healthy” program) (p=0.037 OR 0.395) and Community Health Care (p=0.000 OR 0.155) were associated with lower risk of infection. Regression test shows that community health care and oral prophylaxis were the most influencing factor and these factors should be considered as the main focus of intervention.
Volume: 7
Issue: 2
Page: 130-136
Publish at: 2018-06-01

Random, PSO and MDBPSO based Sensor Deployment in Wireless Sensor Network

10.11591/ijeecs.v10.i3.pp1278-1286
Aparna Pradeep Laturkar , Sridharan Bhavani , DeepaliParag Adhyapak
Wireless Sensor Network (WSN) is emergingtechnology and has wide range of applications, such as environment monitoring, industrial automation and numerous military applications. Hence, WSN is popular among researchers. WSN has several constraints such as restricted sensing range, communication range and limited battery capacity. These limitations bring issues such as coverage, connectivity, network lifetime and scheduling and data aggregation. There are mainly three strategies for solving coverage problems namely; force, grid and computational geometry based. This paper discusses sensor deployment using Random; Particle Swarm Optimization (PSO) and grid based MDBPSO (Modified Discrete Binary Particle Swarm Optimization) methods. This paper analyzes the performance of Random, PSO based and MDBPSO based sensor deployment methods by varying different grid sizes and the region of interest (ROI). PSO and MDBPSO based sensor deployment methods are analyzed based on number of iterations. From the simulation results; it can be concluded that MDBPSO performs better than other two methods.
Volume: 10
Issue: 3
Page: 1278-1286
Publish at: 2018-06-01

Fusion of Random Projection, Multi-Resolution Features and Distance Weighted K Nearest Neighbor for Masses Detection in Mammographic Images

10.11591/ijeecs.v10.i3.pp1030-1035
Viet Dung Nguyen , Minh Dong Le
Breast cancer is the top cancer in women both in the developed and the developing world. For early detection of the disease, mammography is still the most effective method beside ultrasound and magnetic resonance imaging. Computer Aided Detection systems have been developed to aid radiologists in diagnosing breast cancer. Different methods were proposed to overcome the main drawback of producing large number of False Positives.  In this paper, we presented a novel method for masses detection in mammograms. To describe masses, multi-resolution features were utilized. In feature extraction step, we calculated multi-resolution Block Difference Inverse Probability features and multi-resolution statistical features. Once the descriptors were extracted, we deployed random projection and distance weighted K Nearest Neighbor to classify the detected masses. The result is quite sanguine with sensitivity, false positive reduction and time for carrying out the algorithm
Volume: 10
Issue: 3
Page: 1030-1035
Publish at: 2018-06-01

A Low Quiescent Current Fast Settling Capacitor-less Low Drop Out Regulator Employing Multiple Loops

10.11591/ijeecs.v10.i3.pp1070-1079
Suresh Alapati , Patri Sreehari Rao
This paper presents a fast transient and low noise capacitor-less LDO using multiple loops. The proposed LDO exploits adaptive biasing, bulk modulation and a fast reacting control loop for achieving high performance striking reasonable tradeoffs among quiescent current, transient response and stability. The proposed LDO offers a load regulation of 0.095µV/mA while consuming quiescent current of 16 µA. It exhibits a load transient of 134.23mV with a settling time of 240.8ns against 0 to 100mA load variation with 40pF output capacitor. It exhibits an integrated noise of 31.027 pV2 /Hz at 10 Hz for a maximum load current of 100mA. The proposed LDO is designed using 0.18-µm 1P6 CMOS process.
Volume: 10
Issue: 3
Page: 1070-1079
Publish at: 2018-06-01

Evaluation of MAC’s Distributed Queuing Algorithm for Internet of Things Applications

10.11591/ijeecs.v10.i3.pp966-973
Mabruka Mohamed Agel , Mohamed Hadi Habaebi , Sameha Alnahdi , Md Rafiqul Islam
Internet of Things and Machine-to-Machine communications have contributed significantly on our daily life. Nevertheless, from the networking aspect they introduced a huge challenge for the performance and quality of services of networks. In this paper, a Distributed Queuing Access for LTE protocol was analyzed to enhance the random access performance for Machine to machine (M2M) applications. The M2M communications presented countless solicitations that can over-burden the access channel of the present LTE network. This prompts to an expansion in the collision probability and results in a noteworthy access delay. The introduced protocol does improve the performance of Medium access layer in terms of blocking probability, access delay, energy utilization and number of re-transmissions attempts in comparison with the standard LTE protocol without altering the existing LTE outline structure. The new protocol is intended to ensure that the random access procedure of the ordinary UE gadget will not be affected bringing about consistent implementation for the proposed convention.
Volume: 10
Issue: 3
Page: 966-973
Publish at: 2018-06-01

Economic and Emission Dispatch using Whale Optimization Algorithm (WOA)

10.11591/ijece.v8i3.pp1297-1304
Faseela C. K. , H. Vennila
This paper work present one of the latest meta heuristic optimization approaches named whale optimization algorithm as a new algorithm developed to solve the economic dispatch problem. The execution of the utilized algorithm is analyzed using standard test system of IEEE 30 bus system. The proposed algorithm delivered optimum or near optimum solutions. Fuel cost and emission costs are considered together to get better result for economic dispatch. The analysis shows good convergence property for WOA and provides better results in comparison with PSO. The achieved results in this study using the above-mentioned algorithm have been compared with obtained results using other intelligent methods such as particle swarm Optimization. The overall performance of this algorithm collates with early proven optimization methodology, Particle Swarm Optimization (PSO). The minimum cost for the generation of units is obtained for the standard bus system.
Volume: 8
Issue: 3
Page: 1297-1304
Publish at: 2018-06-01

1.5-V CMOS Current Multiplier/Divider

10.11591/ijece.v8i3.pp1478-1487
Jetsdaporn Satansup , Worapong Tangsrirat
A circuit technique for designing a compact low-voltage current-mode multiplier/divider circuit in CMOS technology is presented.  It is based on the use of a compact current quadratic cell able to operate at low supply voltage.  The proposed circuit is designed and simulated for implementing in TSMC 0.25-m CMOS technology with a single supply voltage of 1.5 V.  Simulation results using PSPICE, accurately agreement with theoretical ones, have been provided, and also demonstrate a maximum linearity error of 1.5%, a THD less than 2% at 100 MHz, a total power consumption of 508 W, and -3dB small-signal frequency of about 245 MHz.
Volume: 8
Issue: 3
Page: 1478-1487
Publish at: 2018-06-01

A Study of Thermal Behaviour of HTS Devices at Alternating Current

10.11591/ijece.v8i3.pp1389-1400
Vadim Z. Manusov , Dmitrij Olegovich Krjukov
The paper presents a study on thermal behavior of a coil made of a high-temperature supercon-ducting tape representing operation of a superconducting device (for example, a transformer). Based on the results of a physical experiment, a mathematical model of superconducting coil op-eration under short circuit conditions at the load side was developed. Regimes of overheating by variable short circuit currents were investigated. In this case, short circuit current amplitudes ex-ceeded a critical current of a superconductor, and coil parameters (e.g. an average nonlinearity parameter of a current-voltage characteristic, a superconductor length, and others) were varied. Permissible overheating for a coil with the possibility of its return into the superconducting state after emergency conditions in a dead-time period of automatic reclosing was considered. A crite-rion for return of a superconducting device into the superconducting state within a dead-time period of automatic reclosing has been obtained.
Volume: 8
Issue: 3
Page: 1389-1400
Publish at: 2018-06-01

Hybrid Speckle Noise Reduction Method for Abdominal Circumference Segmentation of Fetal Ultrasound Images

10.11591/ijece.v8i3.pp1747-1757
Fajar Astuti Hermawati , Handayani Tjandrasa , Nanik Suciati
Fetal biometric size such as abdominal circumference (AC) is used to predict fetal weight or gestational age in ultrasound images. The automatic biometric measurement can improve efficiency in the ultrasonography examination workflow. The unclear boundaries of the abdomen image and the speckle noise presence are the challenges for the automated AC measurement techniques. The main problem to improve the accuracy of the automatic AC segmentation is how to remove noise while retaining the boundary features of objects. In this paper, we proposed a hybrid ultrasound image denoising framework which was a combination of spatial-based filtering method and multiresolution based method.  In this technique, an ultrasound image was decomposed into subbands using wavelet transform. A thresholding technique and the anisotropic diffusion method were applied to the detail subbands, at the same time the bilateral filtering modified the approximation subband. The proposed denoising approach had the best performance in the edge preservation level and could improve the accuracy of the abdominal circumference segmentation.
Volume: 8
Issue: 3
Page: 1747-1757
Publish at: 2018-06-01

Experimental Analysis of Cable Distance Effect on Signal Attenuation in Single and Multimode Fiber Optics

10.11591/ijece.v8i3.pp1577-1582
Uzairue Stanley , Victor Matthews Olu , Charles Ochonogor , Amaize Peter , Anyasi Francis
Losses during transmission and high demand of high data rate by the end users have become the biggest challenges facing the telecommunication industries worldwide with Nigeria inclusive. Fiber optic cable as a channel of communication has been adapted worldwide in solving these problems but there is a little limitation in the place of multimode fiber in long distance communication. This paper focuses on the effect of changes in distance on transmitted bandwidth on single mode and multimode fiber. Two cases were considered during this research; (a) with optical amplifier placed in between multimode fiber and (b) without optical amplifier in between multimode fiber. Readings were taken at various distances when specific bandwidth ranging from 50Mbps to 500Mbps was transmitted from the base station to the various distances and it was observed that there was no significant changes in bandwidth received at specified distances (100, 200, 300, 400, 500 etc) m when using single mode fiber, there was a drastic reduction in bandwidth when it get to a distance of 300m when using multimode. When optical amplifier was placed in between the multimode fiber at some selected distances after 400m from the transmitting BTS, it was noticed that the drastic reduction in transmitted bandwidth was almost eliminated, thereby proven that multimode fiber can be use in long distance communication provided optical amplifiers are incorporated in between the distance to bust the signal strength.
Volume: 8
Issue: 3
Page: 1577-1582
Publish at: 2018-06-01

A Novel Approach for Clustering Big Data based on MapReduce

10.11591/ijece.v8i3.pp1711-1719
Gourav Bathla , Himanshu Aggarwal , Rinkle Rani
Clustering is one of the most important applications of data mining. It has attracted attention of researchers in statistics and machine learning. It is used in many applications like information retrieval, image processing and social network analytics etc. It helps the user to understand the similarity and dissimilarity between objects. Cluster analysis makes the users understand complex and large data sets more clearly. There are different types of clustering algorithms analyzed by various researchers. Kmeans is the most popular partitioning based algorithm as it provides good results because of accurate calculation on numerical data. But Kmeans give good results for numerical data only. Big data is combination of numerical and categorical data. Kprototype algorithm is used to deal with numerical as well as categorical data. Kprototype combines the distance calculated from numeric and categorical data. With the growth of data due to social networking websites, business transactions, scientific calculation etc., there is vast collection of structured, semi-structured and unstructured data. So, there is need of optimization of Kprototype so that these varieties of data can be analyzed efficiently.In this work, Kprototype algorithm is implemented on MapReduce in this paper. Experiments have proved that Kprototype implemented on Mapreduce gives better performance gain on multiple nodes as compared to single node. CPU execution time and speedup are used as evaluation metrics for comparison.Intellegent splitter is proposed in this paper which splits mixed big data into numerical and categorical data. Comparison with traditional algorithms proves that proposed algorithm works better for large scale of data.
Volume: 8
Issue: 3
Page: 1711-1719
Publish at: 2018-06-01

Model for Evaluating CO2 Emissions and the Projection of the Transport Sector

10.11591/ijece.v8i3.pp1781-1787
Daniel Ospina , Sebastian Zapata , Mónica Castañeda , Isaac Dyner , Andres Julian Aristizabal , Nicolas Escalante
This article presents a system dynamics model to analyze the growth of cars and the effect of different policies on carbon emissions from the transport sector. The simulation model used in this work was built using the methodology of systems dynamics (SD) developed by Jay W. Forrester at the Massachusetts Institute of Technology (MIT). The model was applied to the transport sector of the city of Bogota, Colombia for a period of time between 2005 and 2050. The information used to feed the model comes from reliable sources such as DANE (National Administrative Department of Statistics) and EIA (U.S Energy Information Administration). Four scenarios were proposed that relate urban development policy and environmental policy. The main results indicate that the number of cars in Bogota can reach up to 13 million vehicles in 2050 and the projection of CO2 emissions would reach 34 million TonCO2 in the absence of an appropriate environmental policy.
Volume: 8
Issue: 3
Page: 1781-1787
Publish at: 2018-06-01

Analysing Vehicular Congestion Scenario in Kuala Lumpur Using Open Traffic

10.11591/ijeecs.v10.i3.pp875-882
Muhammad Ali , Saargunawathy Manogaran , Kamaludin Mohamad Yusof , Muhammad Ramdhan Muhammad Suhaili
Traffic congestion on the roads is mainly the result of overcrowding and this phenomenon happens when a great number of vehicles storm the road, resulting in the disruption of the smooth traffic flow. This greatly affects the daily routines of the people. Not to mention the time that is wasted while a person feels stranded in such situation and it results in the loss of productivity, also deteriorates the societal behavior to a certain extent and have adverse effects on the economy. The natural calamities add to the miseries. It becomes very difficult to manage the traffic flow in situations when there are flash floods or other accidents. Therefore the trend of the traffic seems very unpredictable.    The real-time information and the past data are deemed as the significant inputs for the predictive analysis. Modern day researchers perform the predictive analysis using the simulations as it does not seems to have any accurate and exact predictive model, mainly because of the higher complexity and the perplexing situation the researchers face while performing the analysis. Open Traffic seems to be a viable option, as it is an open source and can be linked with the Open Street. This research targets to study and understand the Open Traffic platform. In this regard the real-time traffic flow pattern in Kuala Lumpur area was successfully been extracted and the analysis was performed using Open Traffic. It was observed and deduced from the results that Kuala Lumpur faces congestion on every major avenue, junction or intersection it mostly owes to the offices and the economic and commercial centers during the peak hours. Some avenues experience the congestion problem due to the tourism.
Volume: 10
Issue: 3
Page: 875-882
Publish at: 2018-06-01

Conceptual Framework of Modelling for Malaysian Household Electrical Energy Consumption using Artificial Neural Network based on Techno-Socio Economic Approach

10.11591/ijece.v8i3.pp1844-1853
Boni Sena , Sheikh Ahmad Zaki , Fitri Yakub , Nelidya Md Yusoff , Mohammad Kholid Ridwan
The residential sector was one of the contributors to the increase in the world energy consumption and CO2 emission due to the increase population, economic development, and improved living standard. Developing a reliable model of electrical energy consumption based on techno-socio economic factors was challenging since many assumptions need to be considered. Over the past decade, bottom-up approaches such as multi-linear regression, artificial neural network (ANN), and conditional demand analysis were used for developing mathematical models to investigate interrelated characteristics among techno-socio economic factors. However, the existing models mostly were focused on countries that had different socio-economic level and cultures from the developing countries of the Association of Southeast Asian Nations. Similar studies in that tropical region were very scarce and only limited for linear modelling under the conditions of techno-socio economic factors. In this study, we proposed ANN for developing a model of electrical energy consumption based on techno-socio economic factors for a tropical region, Malaysia. In order to develop the model, quantitative measurement and qualitative assessment were required. The quantitative measurement was based on the monitoring of total electrical energy consumption with a one-minute interval. In contrast, the qualitative assessment utilized a questionnaire survey to assess household characteristics based on techno-socio economic parameters. The objective of this paper was to propose a conceptual framework of the estimation model for household electrical energy consumption with the consideration of techno-socio economic factors using ANN.
Volume: 8
Issue: 3
Page: 1844-1853
Publish at: 2018-06-01
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