ARPN Journal of Engineering and Applied Sciences              ISSN 1819-6608 (Online)
 

 
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ARPN Journal of Engineering and Applied Sciences                            June 2018  |  Vol. 13  No. 12
   
Title: Assessing the influence of decision tree forest parameters on prediction of monthly river discharge
Author (s): Ali H. Al-Aboodi, Husham T. Ibrahim and Sarmad A. Abbas
Abstract:

The main objective of this paper is to determine the optimum values of the main parameters of Decision Tree Forest (DTF) ( Maximum Trees in Decision Tree Forest (MTDTF) , Minimum Size Node to Split (MSNS) , and Maximum tree levels (MTL) ) , and assessing of their effect on predicted average monthly discharge of Euphrates River, in Thi Qar province, southern Iraq. Four popular statistical parameters were used as evaluation criteria for evaluating DTF models performance: Coefficient of Correlation (R), Root Mean Squared Error (RMSE), Maximum Error (ME), and Mean Absolute Percentage Error (MAPE). Five-fold cross-validation is applied in this research to evaluate the performance of the DTF models. In the first stage of this study, the observed data volume involved in DTF models was equal to 240 months; in this stage the results illustrated that the optimum values of both MTDTF, and MSNS were equal to 125 and 32 respectively, while the modification of the third parameter MTL does not show any effect on the performance of DTF, it was observed that the effect of this parameter on statistical parameters in the form of a straight line. In the second stage of this study, the observed data volume was increased to 480 months ; thus leading to increase the optimum value of MTDTF to 225 , and decrease the optimum value of MSNS to 2 ,while the results does not show any sensitivity to the parameter MTL.

   

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Title: Strength of lightweight aggregate foamed concrete (LWAFC) exposed to elevated temperatures
Author (s): Doha M. Al Saffar and Qassim A. Al Quraishy
Abstract:

This paper reported an investigation on six mixes of Lightweight Aggregate Concrete (LWAC) were produced to study the effect of elevated temperature (200 to 700 °C) on the residual mechanical properties. The first three mixes were considered as reference mixes consisting of cement, Porcelanite as coarse aggregate, and fine Porcelanite as a partial replacement and total replacement of sand. Two percent of foam agent by weight of water was added to produce Lightweight Aggregate Foamed Concrete (LWAFC). The results of testing showed that the high elevated temperatures resistance of foamed concrete is better in terms of the proportional loss in strength than normal concrete. Also, the mechanical properties of LWAFC containing 50% and 100% of fine Porcelanite aggregate are less affected by high temperature than the sanded LWAFC.

   

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Title: Cost analysis of dome structure with ring beam
Author (s): B. H. V. Pai, B. Durga Prasad Baliga
Abstract:

Domes have been used throughout the ages as a housing form, or an element of a housing form (roof structure). Whenever large column free circular areas are to be covered with roof, domes become one of the easiest choices. Surface area required to cover huge space by a dome structure is minimal. Due to this, construction material usage becomes less and this feature leads to economy. In the present paper, an RCC dome with ring beam at the base has been analysed and designed through developing a C language computer program. Only dead and imposed loads are considered. Concentrated load acting at the apex is kept as further scope of study. Necessary input values in the program when given, the cost of construction of the dome is readily obtained.

   

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Title: Global sensitivity analysis, inverse modelling on soil water infiltration
Author (s): Goh Eng Giap, Kosuke Noborio and Asmadi Ali
Abstract:

Richards’ equation was used to govern water infiltration into the unsaturated soil. Haverkamp’s hydraulic properties were used to govern the matric pressure head and hydraulic conductivity relations. Sobol’ variance-based method as a global sensitivity analysis tool was coded to study sensitivity and uncertainty values of input parameters. The same input parameters uncertainty values used in Sobol’ variance-based method could be subjected to an inverse method to search for a set of globally optimized input parameters. Therefore, a simple Genetic Algorithm, i.e. an inverse method, was coded and used to improve the current framework for the uncertainty analysis. A simple significant digit approximation method was developed, applied on the input parameters, and the generated uncertainty parameter values were found to cause 15.4 % of error, which could be reduced if the number of input parameter significant digit used in the simulation were increased. The simple Genetic Algorithm was able to search for a set of globally optimized input parameters at a low population size, i.e. 50, on three cases tested and also was found able to handle noise data. Data points at the lower and upper plains of the water infiltration front are necessary for the inverse method.

   

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Title: Evaluation of renewable energy resources potential for satisfying electricity needs in the Niger Delta Region
Author (s): Sofimieari Ibim Ebianga and Mohd. Wazir Mustafa
Abstract:

The growing effects of global warming and sustainable energy production is a significant challenge in today’s world. This challenge is more pre-eminent in growing economies and have remained so for many years, and might remain so for a foreseeable future if without any action. Nigeria is a growing economy that is endowed with ample energy resources. The conventional and renewable energy resources in Nigeria if adequately harnessed has the potential to meet the energy demand of both urban and rural Nigerians. Nevertheless, Nigeria has a low energy consumption rate when compared to other African countries. Nigeria’s energy circumstance could best be seen as a country that is sustainably rich, yet lack power. Previous works have presented ways in which the available methods of harnessing sustainable energy sources can be improved. There are limited works on the feasibility of meeting energy demands for communities in the Nigeria Delta Region of Nigeria. In this work, the possibility of meeting the energy needs of Buguma a small community in the Niger Delta Region in a sustainable manner has been explored and presented. The primary goal of this work will be on the potentials of vast untapped renewable energy sources in Buguma. From the discussions presented in this work, it is imperative to select and combine the available renewable energy resources carefully. This process must be planned and executed holistically to ensure that the unmet power needs in Buguma and possibly other developing communities can be addressed through a standalone system. The design and installation of a standalone system which can match the energy needs of Buguma and any other developing communities that are far from the existing national grids have been recommended.

   

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Title: Design of circular patch antenna with stairs and slits for wireless application
Author (s): Suneel E. and Prabhakara Rao B.
Abstract:

Present days most of the equipment needs tiny and comfortable for easy usage. In this paper a compact circular patch antenna designed with CPW feeding with feed without contact with the radiating patch, known as capacitive loading, which is penetrated inside the patch is presented. Antenna without stairs and slits exhibits 62.7% bandwidth (4.7GHz-9GHz).And in modified proposed design, stairs and slits are incorporated in the radiating patch exhibits dual band for WiMAX (3.3 GHz-3.7GHz) and WLAN (5.725-5.825GHz) applications. In addition to this direct short range communication (DSRC) frequency range also achieved.

   

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Title: Processing, mechanical characterization and its tribological study of discontinuously reinforced Caryota Urens fiber Polyester composites
Author (s): Raviraj Shetty, Ramamohan Pai, Augustine B. V. Barboza and Viral Pankajkumar Gandhi
Abstract:

The awareness in plant fiber-reinforced polyester composite materials is increasingly emerging in manufacturing applications and vital exploration. They are inexpensive, absolutely or somewhat biodegradable and recyclable. Plants fibers from sisal, kenaf, pineapple, ramie, bamboo, flax, cotton, hemp, jute and banana has been mostly used as the reinforcement for composites due to its unique properties such as obtain ability, renew ability, low density and price used for the manufacturing of composites. The plant fiber composites are more environmentally friendly and are used in ide variety of applications such as transportation, military, building construction and packaging. In this presented paper processing ,mechanical characterization and its tribological study of new class of Caryota Urens fiber reinforced with Polyester composites has been processed and investigated.

   

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Title: Electrolyte panel tests: An information system for registration and consultation
Author (s): Albeiro Cortes Cabezas and Yamil Cerquera Rojas
Abstract:

This article presents an implementation of an information system to optimize the process of performing electrolyte panel tests for the hospitals in Huila, Colombia, in order to improve the organization of the results and access to them. In the implementation, the HL7 standards set were used as a guide to achieve good interoperability and to make the system scalable. Access to test results can be done through any web browser and any device due to a responsive web design was used. The information system allows access to the data of patients and it is possible to export information from the database to obtain different statistics. Spring Framework was used to design the information system, which provides a complete programming and configuration model for modern, Java-based enterprise applications on any type of deployment platform.

   

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Title: Least cost routing algorithm with the state space relaxation in a centralized network
Author (s): Y. J. Lee
Abstract:

This paper aims to present the least cost algorithm finding loop routes between a central node and a large number of end-nodes in the centralized network. End-nodes request service on the loop route originated from a central node. Demands at end-node are deterministic and distance matrix is given. We find a set of minimum cost loops to link end-nodes to a central node satisfying the service requirements at end-nodes. In this paper, we propose a heuristic algorithm which first generates possible routes by applying the space relaxation, and then finds a set of loop routes through matching. The proposed algorithm is easy to implement and enable us to obtain the solution regardless of network configuration in the short computation time for the small network. The computation comparison with previous algorithms is also presented. Our algorithm can be applied find the broadcasting loops in centralized network.

   

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Title: Magnetic field effect on compression ignition engine performance
Author (s): Hayder J. Kurji and Murtdha S. Imran
Abstract:

Internal combustions engine significantly relies on the complete combustion of the air-fuel mixture that means fewer emissions and results with higher efficiency. This work studied fuel ionization by using a magnetic field which will make sure better combustion. The liquid fuel converts into fine particles by using fuel injector. So this work is an experimental study showed the impact of magnetic field on compression ignition engine performance. The engine speed was different from (1000 to 2500) rpm without and with using magnetic field into changed intensity which has (7000, 9000 and18000) Gauss. The magnetic field was connected to the outer surface of inlet fuel pipe in the appropriate position previously fuel injection pump. The experimental outcomes include a reduction in the fuel consumption in compression ignition engine was found up to (15.71%), brake specific fuel consumption up to (15.71%). The exhaust gas emissions presented a reduction almost by (10.25%) of CO, (7.40%) of NOX and (29.82%) of HC, but increasing CO2 emission by (33.04%).

   

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Title: Implementation of Doppler radar with OFDM waveform on SDR platform
Author (s): Irfan R. Pramudita, Puji Handayani, Devy Kuswidiastuti and Gamantyo Hendrantoro
Abstract:

A Doppler OFDM radar system is aimed at obtaining radial velocity and distance detection results from the target. This paper reports the implementation of a Doppler OFDM radar system on an SDR platform. The design of the radar system with mathscript is fed into LabVIEW Communication serving as a processing software. The system uses USRP NI-2943R as a device for generating and receiving OFDM Doppler radar signals that work in the S-Band. The test results show that to improve the detection result the number of sub carriers and OFDM symbols generated must be taken into account. From the test, relative errors of 5.6% for detection of radial rate and of 16.8% for detection distance are obtained with 40 MHz bandwidth. An increase in sample rate proportional to the value of OFDM signal bandwidth on USRP greatly affects the performance of systems.

   

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Title: A multi metric optimized clustering for matching and ranking of web services
Author (s): K. Meenakshi Sundaram and T. Parimalam

Abstract:

Web services are software entities that have a well defined interface and perform a specific task. A number of web services are composed together to fulfill the customer requirements because single web service not always fulfill the customer requirements. It can be grouped based on different similarity measures. The domain-ontology-based PSO-inspired Balanced Iterative Reducing and Clustering using Hierarchies (BIRCH) clustering and Improved Bipartite graph (IBG), determines the relevancy between web services based on concept distance similarity measure. Based on this similarity measure the web services are clustered and ranked. The major drawback of this method is, there is no single similarity measure is optimal for determining the relevancy between web services. So in this proposed work, an efficient clustering method is proposed that uses different matchers with different similarity measures to calculate the relevancy between web services. It enhances the improved bipartite graph based web service matching. But the different matcher may return different clustering results, so a majority voting algorithm called as Boyer-Moore majority vote algorithm is introduced to finalize the clusters. After clustering the web services, the web services are ranked based on QoS based Fuzzy clustering. Experimental results show that the proposed method the efficiency of web service composition in terms of accuracy, runtime, recall and precision.

   

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Title: Evaluation of machine translation systems and related procedures
Author (s): Musatafa Abbas Abbood Albadr, Sabrina Tiun and Fahad Taha AL-Dhief
Abstract:

Currently, the high volume of international information exchange involves a wide range of localities. As each locality comes with its own distinctive dialect, the need for an effective means of language translation is becoming more and more apparent. Among the concerns of information professionals is the capacity of an interested party to access web information offered in an unfamiliar language. Classified under the wide field of artificial intelligence, machine translation (MT) is an approach related to natural language processing. The machine translation technique involves the use of software for the conversion of documents or verbalized information from one natural language into another. Of late, a substantial number of procedures have been proposed for the fashioning of an efficient MT system. While these procedures were observed to be capable in certain areas, they were found wanting in others. The objectives of this Endeavour are to (a) conduct a thorough investigation on machine translation and track its progress over recent decades, (b) examine the currently available machine translation procedures and systems and (c) offer an assessment on machine translation systems.

   

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Title: Determine the optimal solution using Vogel’s Approximation method
Author (s): Sufian M. S. Al-dulaymi
Abstract:

Focused on communities and nations out of date and the exchange of transport problems to solve these problems through attention to planning for these deviations that have occurred in transportation. Where he began to study transport planning and attempting to simulate this problem through the use of the best way to solve the transport problems which is a transfer of assets with similar materials (which center is the production or marketing or other movement of goods it) to the endings (which is the center or center of consumption demand or other goods sent to him). The lowest costs or increase profits and less time as possible by standing on this problem of the transport problem facing the company under study and represent the sport through the planning work around this problem and the best ways relationship scholastic. Finally reached the study the best solution to solving the transport problem of the company is: X11 equal to 2x12 equal to10X21 equal to 3X23 equal to 11X31 equal to 4.

   

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Title: A Denial of Service attack on DHCP server and its countermeasures
Author (s): Ashutosh Satapathy and Jenila Livingston L. M.
Abstract:

Today, Internet is playing a major role for providing education in institutions to increase productivity in industries. To provide flexibilities and reliabilities in internet services, different network components are used. DHCP server is one of the components, used to assign IP addresses to client dynamically. Increasing the number of end machines not only provide benefit to organization but also make those susceptible to attack. Denial of Service attack is one of the common forms of attack used to prevent services to end users/ machine. This paper presents a way to perform DHCP Denial of Service attack using VMware Workstation. It also focuses the counter measures to prevent this attack.

   

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Title: Android application in food ordering system
Author (s): Ann Janeth Garcia, Danielle Jaye Agron and Wansu Lim
Abstract:

Due to the fast phase lifestyle nowadays, it is truly a setback to spend a lot of time in queuing to the traffic encountered in ordering food on school cafeteria. The researchers develop “cAPPeteria”, a food ordering application where the users can directly order through, customize the food quantity, confirm order and generate a one-dimensional barcode on device A, controlled by the user, then the simulated code is scanned through device B, which will scan and decode the information encrypted to the image from device A. Improving the existing wireless food ordering system limits the possible complication faced on connecting to an internet based server thus increasing mobility and control to the user.

   

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Title: Comparative study on automation of gear modelling using CATIA V5 (KBE) –VBA approach
Author (s): Aamani P. and T. N. Valaramathi
Abstract:

The aim of this project is to work on automated modelling system for different types of gears with a new way of solving modelling design problems with in the CAD environment by using knowledge based engineering from the conventional design procedures to improve gear design phase in an industry. Computer aided design is an important industrial art extensively used in many applications including automotive, shipbuilding, aerospace industries and many more. Knowledge based engineering (KBE) has become a practical method of visualizing manufacturing cost and enabling product analysis by simulating product development activities in design for manufacturing support tools. Any of the mistake in the design phase may result in to very high losses associated in the manufacturing investments. To reduce the development cost, it may be worthy to focus on the design phase of product development. By using CATIA V5 model of internal gear and external wobble gears have been created and then imported in ANSYS workbench for analysis. Static structural analysis has been conducted for both the gears by using ANSYS .The values of maximum stresses from structural analysis are compared with theoretical calculation. It is observed that 90% time will be reduced by using this automated gear designing and also chance of errors also reduces. A system has been developed to fill in the gap between design engineers and computational experts when analyzing product development process.

   

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Title: Numerical methods performance optimization in electrolytes properties modeling
Author (s): Dmitry Potapov
Abstract:

A global optimization algorithm for the residual function is considered in application to the cluster model of electrolyte aqueous solutions. A method for finding a set of parameter estimates is developed and criteria for adequate solutions subset identification are proposed. Due to the high computational intensity of the minimization procedure, a performance optimization technique of the proposed method is described.

   

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Title: A new engineering approach to evaluate the dielectric properties of materials in K-Band frequency using rectangular waveguide measurements
Author (s): Rachid Lahbibi, Hassan Ammor and Hassan Elmajid
Abstract:

A new engineering approach for measuring dielectric properties of materials at K-Band frequencies is developed. The proposed approach is based on applying the rectangular waveguide measurements. The material sample under test (MSUT) is loaded into the K-band rectangular waveguide WR42. The present method is comprised of two parts. The first one concerns the extraction of Scattering Parameters using Ansoft HFSS Solver, then calculate them as a function of the complex permittivity adopting Transmission Matrices (direct problem). The square sums of errors between the simulated and calculated S-parameters are minimized using a nonlinear optimization algorithm. The second part aims to extract the complex relative permittivity from the simulated S-parameters (inverse problem ). An innovative algorithm is developed to look for complex relative permittivity. A comparative study is elaborated, the Nicholson Ross method (NRM) is used to determine the complex relative permittivity of the tested materials in order to compare them with the results obtained using our method. The percentages of errors between the values obtained by NRM and those achieved using our technique are assessed and minimized. The achieved results have demonstrated a good agreement.

   

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Title: Prediction the thermal and hydrodynamic performance of nano fluids flow in a tube coupled with double twisted tape
Author (s): Khudheyer S. Mushatet and Farah Kh. Youssif
Abstract:

In this study ,the fluid flow of the Al2O3 nano fluid in a horizontal pipe equipped with twin twist tape insert has been numerically studied .Different values of twisting ratio (y/w) of 2 ,4 and 6 with volume concentration) of 0.5% and 4 % are investigated under Reynolds number range of 5000 to 35000. The object of this project is to augment the transfer of heat in a tube by employing the combined influence of double twisting tape with nano fluid .The Navier – Stockes and energy equations as well to the turbulence model are desired for modeling this physical problem. ANSYS Fluent code is utilized to gain the results .The numerical consequence explained that the Nusselt number (Nu) , friction factor (f), and overall thermal performance factor raises as twisting ratio decreases . The results also display that the twin twisting tape more effective than a plain tube for heat transfer augmentation. This increase is improved with increasing volume concentration.

   

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