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Speed profile optimization of an electrified train in Cat Linh-Ha Dong metro line based on pontryagin's maximum principle

10.11591/ijece.v10i1.pp233-242
An Thi Hoai Thu Anh , Nguyen Van Quyen , Nguyen Thanh Hai , Nguyen Van Lien , Vu Hoang Phuong
An urban railway is a complex technical system that consumes large amounts of energy, but this means of transportation still has been obtained more and more popularity in densely populated cities because of its features of high-capacity transportation capability, high speed, security, punctuality, lower emission, reduction of traffic congestion. The improved energy consumption and environment are two of the main objectives for future transportation. Electrified trains can meet these objectives by the recuperation and reuse of regenerative braking energy and by the energy - efficient operation. Two methods are to enhance energy efficiency: one is to improve technology (e.g., using energy storage system, reversible or active substations to recuperate regenerative braking energy, replacing traction electric motors  by energy-efficient traction system as permanent magnet electrical motors; train's mass reduction by lightweight material mass...); the other is to improve operational procedures (e.g. energy efficient driving including: eco-driving; speed profile optimization; Driving Advice System (DAS); Automatic Train Operation (ATO); traffic management optimization...). Among a lot of above solutions for saving energy, which one is suitable for current conditions of metro lines in Vietnam. The paper proposes the optimization method based on Pontryagin's Maximum Principle (PMP) to find the optimal speed profile for electrified train of Cat Linh-Ha Dong metro line, Vietnam in an effort to minimize the train operation energy consumption.
Volume: 10
Issue: 1
Page: 233-242
Publish at: 2020-02-01

Moisture content investigation in the soil samples using microwave dielectric constant measurement method

10.11591/ijece.v10i1.pp704-710
Shashi K. Dargar , Viranjay M. Srivastava
The microwaves of typical frequency ranges of 3 GHz to 30 GHz have been in use for remote sensing applications which are progressing rapidly. The microwaves can sense existing moisture in any material that absorbs moisture such as soil or vegetation. In case of soils which may be comprised of variable mix proportionate of solids, liquids or gases and distinct textures subjected to the associated size and the arrangements of soil particles. Hence, the moisture absorption by a specific type of soil used to be different. The inherent physical and electrical properties such as color, texture, grains, dielectric constant, conductivity or permeability, etc. differentiate various soils. In this work, authors present soil moisture measurement by simple estimation of emissivity i.e. the ratio of energy radiated by an object to absorbing the body of same physical temperature. A strategic method of measuring dielectric constant using a microwave signal is used in this research work. The measurement of the dielectric constant of the soils collected from the specific regions and analysis of results has been reported. The proposed method is less complex and can further be used for the identification of soil moisture and agricultural applications.
Volume: 10
Issue: 1
Page: 704-710
Publish at: 2020-02-01

Framework for comprehensive enhancement of brain tumor images with single-window operation

10.11591/ijece.v10i1.pp801-808
Deepthi Murthy T. S. , Sadashivappa G.
Usage of grayscale format of radiological images is proportionately more as compared to that of colored one. This format of medical image suffers from all the possibility of improper clinical inference which will lead to error-prone analysis in further usage of such images in disease detection or classification. Therefore, we present a framework that offers single-window operation with a set of image enhancing algorithm meant for further optimizing the visuality of medical images. The framework performs preliminary pre-processing operation followed by implication of linear and non-linear filter and multi-level image enhancement processes. The significant contribution of this study is that it offers a comprehensive mechanism to implement the various enhancement schemes in highly discrete way that offers potential flexibility to physical in order to draw clinical conclusion about the disease being monitored. The proposed system takes the case study of brain tumor to implement to testify the framework.
Volume: 10
Issue: 1
Page: 801-808
Publish at: 2020-02-01

A reliable next generation cyber security architecture for industrial internet of things environment

10.11591/ijece.v10i1.pp387-395
C. Vijayakumaran , B. Muthusenthil , B. Manickavasagam
Architectural changes are happening in the modern industries due to the adaption and the deployment of ‘Internet of Things (IoT)’ for monitoring and controlling various devices remotely from the external world. The most predominant place where the IoT technology makes the most sense is the industrial automation processes in smart industries (Industry 4.0). In this paper, a reliable ‘Next Generation Cyber Security Architecture (NCSA)’ is presented for Industrial IoT (IIoT) environment that detects and thwarts cybersecurity threats and vulnerabilities. It helps to automate the processes of exchanging real-time critical information between devices without any human intervention. It proposes an analytical framework that can be used to protect entities and network traffics involved in the IIoT wireless communication. It incorporates an automated cyber-defense authentication mechanism that detects and prevents security attacks when a network session has been established. The defense mechanism accomplishes the required level of security protection in the network by generating an identity token which is cryptographically encrypted and verified by a virtual gateway system. The proposed NCSA improves security in the IIoT environment and reduces operational management cost.
Volume: 10
Issue: 1
Page: 387-395
Publish at: 2020-02-01

Design and development of a method for detecting sleep roll-over counts using accelerometer ADXL335

10.11591/ijece.v10i1.pp477-485
Jonathan Acharya
Sleep plays an important role as it helps human body to rejuvenate, boosts mental function and manage stress. Sleep is restorative function which enhances muscle growth, repairs tissues, maintains health and make physical appearance look or feel better. The lack of sleep in human body can increase the risk of diseases which are asthma, diabetes, depression. For healthy physiological function, sleep is essential and has strong relation to mental condition. Easy way of sleep management is considered for maintaining good mental health. Numerous scientists, doctors and researchers have proposed various ways to monitor sleep, some of those best tests are polysomnography test and actigraphy test. However, taking sleep test covering the whole body with wires and electrodes which is polysomnography test is uncomfortable for patients, and sensors used for different approaches like this are costly and often require overnight treatment and expert monitoring in clinics. Therefore, easy way of detecting roll-over movements which is convenient for patients to wear is proposed. Accelerometer ADXL335 sensor is taped on socks during sleep which is comfortable for patients to wear and do not cause any inconvenience during sleep. Algorithm is proposed to read the dataset and count the roll-over during the sleep based on threshold. Resulting the number of roll-over detected during a sleep period.
Volume: 10
Issue: 1
Page: 477-485
Publish at: 2020-02-01

Service selection in service oriented architecture using probabilistic approach and asynchronous queues with interceptor validation

10.11591/ijece.v10i1.pp396-406
Balika J. Chelliah , K. Sathish , S. Arun Kumar
In service Oriented Architecture, many services are offered with similar functionality but with different service quality parameters. Thus the service selection using a deterministic approach causes conflicts and inefficient results. We use asynchronous queue to model the service inventory architecture avoiding unnecessary locking of resources and thus allowing a provision to consumers to get their required services without intervening and with temporally decoupled fashion. Actually this kind of service selection strategy is considered in regards with game theory to eliminate fluctuations of queue length. It offers a discrete random service which is equal to some request requested by consumers, it means service can be provided based on probability mass function as a substitute of deterministic decisions for selecting a proper service provider as of the consumers. Once the request is taken out from the queue, it is delivered to the interceptor that has validation and sanitization module. It thus reduces the peak queue length and reduces periodic fluctuations in the queue length.
Volume: 10
Issue: 1
Page: 396-406
Publish at: 2020-02-01

Quality assessment on muscle locations for speech representation

10.11591/ijeecs.v17.i2.pp957-967
Sairul Izwan Safie , Rosuhana Rahim
There are more than 68 muscles, which are activated either simultaneously or sequentially during speech production. To monitor the signals from all these muscles at once, involve a lot of sensors and such system is very expensive. In the Quran therapeutic treatment applications, the use of specific muscles is very important, for the production of correct Arabic pronunciation. The proper pronunciation will improve the reader's understanding of what is being read, thus assisting the effectiveness of the therapy process. The objective of this study is to identify the most optimal muscle location, which is suitable for monitoring the quality of a recitation during the Quran’s therapeutic process, based on the information content embedded in their Electromyogram (EMG) signals. Empirical Mode Decomposition (EMD) technique was used in this study to extract features of the EMG while the combination of Hilbert Huang Spectral Entropy (HHSE) and Kullback Leibler Divergence (KLD) techniques were used to quantify the information content in each feature. Combination of these techniques managed to rank ten widely used speech muscles in the literature based upon their information content. Four muscle locations have been suggested, which is believed to be sufficient in developing a low-cost self-assessment system for monitoring Quran recitation.
Volume: 17
Issue: 2
Page: 957-967
Publish at: 2020-02-01

Analysis and implementation of the impact of change: application to heterogeneity algorithms in enterprise architecture

10.11591/ijece.v10i1.pp377-386
Jihane Lakhrouit , Karim Baïna
Measurements play an important role in many scientific fields in general and intheanalysisofenterprisearchitectureinparticular.In software engineering, the measures are used to control the quality of the software product and better manage development projects to control the cost of production.In this article we proposed firstly models and measures to evaluate and analyze the complexity of the enterprise architecture and especially the heterogeneity of components and relationships, and secondely we developed a model to automatically detect the change of measures and their impact on enterprise architecture.
Volume: 10
Issue: 1
Page: 377-386
Publish at: 2020-02-01

A mitigation of channel crosstalk effect in dispersion shifted fiber based on durability of modulation technique

10.11591/ijece.v10i1.pp891-899
Ali Shaban , Murad Obaid Abed , Ehab Abdul Razzaq Hussein , H. J. Abd
In fiber optics the Four Wave Mixing (FWM) has the harmful effect of an optical transmission system that can severely limit Wavelength Division Multiplexing (WDM) and reduce the transmission aptness. This work preset the durability of the different modulation format was tested to FWM by using Dispersion Shifted Fiber (DSF). Moreover, the performance of the proposed system is surveyed by changing the fiber length and applying an information rate of 200 Gb/s. The experimental results show that the FWM capacity has decreased significantly by more than 14 dB when applying Return to Zero (RZ) modulation form. In addition, in terms of the propsed system performance in the first channel and with 700 km distance, it was observed that the lower Bit Error Rate (BER) in the normal RZ modulation is equal to 1.3×10-13. As well as it is noticeable when applied the Non Return to Zero (NRZ), the Modified Duobinary Return to Zero (MDRZ) and Gaussian modulation, the system performance will be quickly changed and getting worse, where the BERs increased to 1.3×10-4, 1.3×10-6 and 1.3×10-2 consecutively at same channel and for the same parameters.
Volume: 10
Issue: 1
Page: 891-899
Publish at: 2020-02-01

Design of a modified natural egyptian solar house

10.11591/ijece.v10i1.pp589-599
Hanaa M. Farghally , Faten H. Fahmy , Amal A. Hassan , Ninet M. Ahmed
The rate of increase in energy consumption and high costs in addition to the depletion of existing resources has a significant impact on our standard of living for next generations. In this case, the priority is to develop alternative cost-effective sources for powering the residential and non-residential buildings. This paper proposes and develops a design of a modified small two-story residential solar house for a medium-sized family located in Cairo, Egypt. This modified solar house meets almost all its energy demands including space heating by using solar air collector with a pebble storage unit in winter and a summer cooling system using wind catcher theory. Hot water is obtained throughout the day by using a steel sheltered water storage tank with a capacity of 1000 liter. Finally, the proposed heating system of the solar house is sized and modeled.
Volume: 10
Issue: 1
Page: 589-599
Publish at: 2020-02-01

A trade-off design of microstrip broadband power amplifier for UHF applications

10.11591/ijece.v10i1.pp919-927
Mohamed Ribate , Rachid Mandry , Jamal Zbitou , Larbi El Abdellaoui , Ahmed Errkik , Mohamed Latrach , Ahmed Lakhssassi
In this paper, the design of a Broadband Power Amplifier for UHF applications is presented. The proposed BPA is based on ATF13876 Agilent active device. The biasing and matching networks both are implemented by using microstrip transmission lines. The input and output matching circuits are designed by combining two broadband matching techniques: a binomial multi-section quarter wave impedance transformer and an approximate transformation of previously designed lumped elements. The proposed BPA shows excellent performances in terms of impedance matching, power gain and unconditionally stability over the operating bandwidth ranging from 1.2 GHz to 3.3 GHz. At 2.2 GHz, the large signal simulation shows a saturated output power of 18.875 dBm with an output 1-dB compression point of 6.5 dBm of input level and a maximum PAE of 36.26%.
Volume: 10
Issue: 1
Page: 919-927
Publish at: 2020-02-01

A service-oriented cloud modeling method and process

10.11591/ijece.v10i1.pp962-977
Chee-Yang Song , Eun-Sook Cho
The transition of software development from web to cloud has been accelerated. The development of cloud services requires a modeling method that reflects the characteristics of cloud including personalized service, resource sharing service, grouped and distributed services, and cross-platform operability. This study aimed to suggest a method of developing UML-based cloud services suitable for the characteristics of cloud services. A cloud service metamodel was defined using cloud applications’ characteristic modeling elements, and after that, how these cloud modeling elements are expressed into UML modeling elements was defined with an integrated metamodel between cloud and UML. By applying this hierarchical cloud metamodel, an MDA and MVC-based service-oriented cloud modeling process was established. By doing so, it will be possible to easily design services (applications) and solutions that are suitable for cloud computing environments, and in particular, to create hierarchical reuse models by the level of the abstraction of model-driven development.
Volume: 10
Issue: 1
Page: 962-977
Publish at: 2020-02-01

ICT services features to support intrinsic value activities for productive ageing

10.11591/ijeecs.v17.i2.pp1096-1103
Norisan Abd Karim , Haryani Haron , Wan Adilah Wan Adnan
Intrinsic values associated with ICT services activities in productive ageing. Given the advances made in ICT services that have been widely used, elderlies need to be equipped with the knowledge in using the services. The lack of ICT usage among elderlies is because of the low motivation to use the ICT applications. This in turn could be due to the lack of intrinsic values associated with the use of ICT applications among elderlies. This study explores further the features of ICT services needed to support intrinsic values activities. Brainstorming sessions is conducted in this study where it involved six ICT experts in order to identify ICT services features to support intrinsic value activities. Intrinsic motivation features are significant features in ICT services to support intrinsic value activities for productive ageing. There are five intrinsic motivation features identified in this research, which are autonomy, competence, relatedness, altruism and curiosity. The ICT services to support intrinsic value activities model comprises of the ICT services characteristics that are transactive, community-based with online communication channels, and incorporated with intelligent agents.
Volume: 17
Issue: 2
Page: 1096-1103
Publish at: 2020-02-01

Voltage collapse point evaluation considering the load dependence in a power system stability problem

10.11591/ijece.v10i1.pp61-71
Zaid Garcia Sanchez , Jose Antonio González , Gustavo Crespo , Hernan Hernandez Herrera , Jorge Iván Silva
Voltage Stability has emerged in recent decades as one of the most common phenomena, occurrence in Electrical Power Systems. Prior researches focused on the development of algorithm indices to solve the stability problem and in the determination of factors with most influence in voltage collapse to solve the stability problem. This paper evaluates the influence that the load dependence has with the voltage on the phenomenon of the voltage stability and especially on the characteristics the collapse point or instability point. Load modeling used is detailed and comparisons of the results obtained are made with those described in the bibliography and those obtained with commercial software. The results of the load margin are also compared when a constant load or a voltage-dependent load is considered as well as the values obtained at the maximum load point and the point of voltage instability.
Volume: 10
Issue: 1
Page: 61-71
Publish at: 2020-02-01

IoT–smart contracts in data trusted exchange supplied chain based on block chain

10.11591/ijece.v10i1.pp438-446
S. Ganesh Kumar , A. Murugan , B. Muruganantham , B. Sriman
Internet of Things (IoT) assumes a critical part in the advancement of different fields. The IoT data trusted exchange in recent year extend of uses influence an awesome request and increasing scale. In such a platform, exchange the data sets that they require and specialist organization can search. However, the enough trust as the third-party mediators for data exchange in centralized infrastructure cannot provide. This paper proposes a blockchain for IoT data trusted exchange based on decentralized solution. In particular, the fundamental standards of blockchain in verify manner, individuals can communicate with each other without a confided in mediator intermediary. Blockchain enable us to have a distributed, digital ledger. IoT (Internet of Things) sensor devices (zigbee) utilizing blockchain technology to assert public availability of temperature records, tracking location shipment, humidity, preventing damage, data immutability. The sensor devices looking the temperature, location, damage of each parcel during the shipment to completely guarantee directions. In blockchain all data is got moved from one position to another, where a smart contract assesses against the product attributes. Ethereum blockchain and smart contracts atlast it gets through knowledge a design to be copied and presents its decentralized distributed digital ledger, auditable, transparent, features visually.
Volume: 10
Issue: 1
Page: 438-446
Publish at: 2020-02-01
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