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Frequency: 12 issues per year
ISSN: 2250–3005 (online version)
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International Journal of Computational Engineering Research

(IJCER)

 

Articles

 

Research Article  open access
Improving and Comparing the Coefficient of Performance of Domestic Refgirator by using Refrigerants R134a and R600a
Suresh Boorneni , A.V.Satyanarayana
Andhra Pradesh, India
Paper Indexed : : 03.3005/048010105
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

The main objective in present dissertation has been focused on alternative refrigerant to conventional CFC refrigerant, CFC like R12, R22, R134a, etc… are not eco friendly. The emission of these refrigerants causes the depletion of ozone layer etc…. Hence to avoid above difficulty the alternative of refrigerant in the form of R600a has been choosing. R600a refrigerant are natural refrigerant consist of hydrocarbon. In the present work, the performance of the domestic refrigerator is determined using R600a (Isobutane) and comparison with R134a (Tetrafluoro-ethane) as the part of project work the refrigerator setup consists of evaporator, compressor, condenser and expansion valve are chosen with suitable specification. Also in the present work an attempt has been made to improve the coieffiecnt of performance (cop) of the system, by incorporating a heat exchanger before admitting refrigerant into the compressor. Thus the compressor work reduces and it may results increase the performance of the refrigeration system.

Keywords:Heat exchanger, coieffiecnt of performance, Isobutane, depletion of ozone, alternative refrigerants.

 

Research Article  open access
On (1,2)*-πgθ-CLOSED SETS IN BITOPOLOGICAL SPACES
C.Janaki, M. Anandhi
India
Paper Indexed : : 03.3005/0480106012
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

In this paper we introduce a new class of sets called (1,2)*-πgθ-closed sets in bitopological spaces. Also we find some basic properties of (1,2)*-πgθ-closed sets. Further, we introduce a new space called (1,2)*-πgθ-T½ space. Mathematics Subject Classification: 54E55, 54C55

Keywords:(1,2)*-πgθ-closed set, (1,2)*-πgθ-open set, (1,2)*-πgθ-continuity and (1,2)*-πgθ-T½ space.

 

Research Article  open access
Enhancement of the Performance of Hydraulic Power Pack by Increasing Heat Dissipation
M.L.R.Chaitanya Lahari, DR.B.SRINIVASA REDDY
Andhra Pradesh, India
Paper Indexed : : 03.3005/04801013019
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Hydraulic power units are main driving components of driving system. Consisting mainly a motor, a reservoir and a hydraulic pump these units can generate a tremendous amount of power to drive any kind of hydraulic ram. Hydraulic power units are based on Pascal's law of physics drawing their power from ratios of area and pressure. Heating of hydraulic oil in operation is caused by inefficiencies. Inefficiencies result in losses of input power, which are converted to heat. If the total input power lost to heat is greater than the heat dissipated, the hydraulic system will eventually overheat. In this work an attempt is made to reduce the unwanted temperature of oil by changing the construction and material of the tank and providing fins over it. Finally the improvement of efficiency of power pack by reducing heat losses has been studied and analyzed.

Keywords:Hydraulic Power Pack, Thermal Conductivity, Heat Transfer Coefficient, Heat Dissipation

 

Research Article  open access
A Brief Study on Usability Principles of Mobile Commerce
Manjot Kaur
PUNJAB, INDIA
Paper Indexed : : 03.3005/04801020025
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

The widespread use of mobile commerce is no longer a fiction. The future is for mobile technology and mobile commerce. These emerging technologies are getting wide acceptance throughout the world. Mobile commerce getting fast popularity since it allows the freedom of movement and ease of access virtually from anywhere. The future of mobile commerce heavily depends upon how easy and how friendly is this service to use. An effective user friendly interface design plays central role in the success of mobile commerce. Therefore, the main purpose of my research is to evaluate the usability principles of mobile commerce. In this research paper firstly I discussed about the M-Commerce in detail. Definitions of Mobile Commerce given by various authors are explained in brief. In problem discussion various barriers to M-Commerce are identified such as security, tangibility and physical experience. After this, usability of M-Commerce is explained as one of the biggest challenging issue in the adoption of M-Commerce. Essential factors of the M-Commerce acceptance are also outlined. After this a model of attributes of system acceptability is described. In last research questions are defined with the suitable answers. After research it can be concluded that if mobile usability could be improved above "satisfactory" level, it will have direct and positive impact of m-commerce usage and increase in m-commerce business volume.

Keywords:WAP usability, Usability Principles, Mobile commerce, User Interface Design, Principles to support usability, Usability Heuristics, Amazon.com, CNN.com

 

Research Article  open access
Path Loss Prediction by Robust Regression Methods
T. E. Dalkilic, K. S. Kula, B. Y. Hanci
Trabzon, Turkey
Paper Indexed : : 03.3005/04801026035
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Estimating the position of mobile terminals is an important problem for cellular networks. One of the methods of locating the mobile terminal is to use measurements of the radio path loss. This paper presents the results of robust regression methods for the prediction of path loss in a specific urban environment. Since the data set using in the application has outlier robust regression methods are used prediction of the path loss model. The performance of the path loss model which is obtained from robust regression methods are compared to Bertoni-Walfisch model, which is one of the best studied for propagation analysis involving buildings. This comparison based on the mean square error between predicted and measured values. In this study, propagation measurements were carried out at 900 MHz band in the city of Istanbul, Turkey.

Keywords:Path Loss Model, Anfis, Robust Regression, Prediction

 

Research Article  open access
Stochastic Model to Find the Diagnostic Reliability of Gallbladder Ejection Fraction Using Normal Distribution
P. Senthil Kumar, A. Dinesh Kumar, & M. Vasuki
Tamilnadu, India.
Paper Indexed : : 03.3005/04801036041
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

To assess the diagnostic reliability of gallbladder ejection fraction in patients with suspected biliary pain. For a class of nonlinear diffusion equations we use the Painleve analysis. In some cases we find that it has only the conditional Painleve property and in other cases, just the painleve property. We also obtained special solutions of Painleve analysis. In that, one of the solution (i.e) the reduction of nonlinear diffusion equation to Riccati equation was used for the gallbladder ejection fraction.

Keywords:Gallbladder Ejection Fraction, Normal Distribution, Painleve Property, Riccati Equation, Cholecystokinin, Chronic Acalculous Cholecystitis.

 

Research Article  open access
Vehicle Theft Intimation Using GSM
Minakshi Kumari, Prof. Manoj Singh
India
Paper Indexed : : 03.3005/04801042047
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

This project uses a wireless technology for automobiles using GSM modem. With the help of GSM modem, we can stop the automobile engine when someone tries to steal the vehicle. When unauthorised person tries to unlock the door of car, then a programmable microcontroller 8051 gets an interrupt and order to GSM modem to send a SMS. GSM modem that stores owner's number upon a miss call for the first time sends an alert SMS to that authorized number. If owner reply to "stop the engine" then the control instruction is given to the microcontroller through interface that the output from which activates a relay driver to trip the relay that disconnects the ignition of the automobile resulting in stopping the vehicle.

Keywords:Step down transformer 230/12V, Bridge Rectifier, Voltage Regulator 7805, Microcontroller 8051 and GSM modem.

 

Research Article  open access
XML Retrieval: A Survey
Hasan Naderi, Mohammad Nazari Farokhi, Nasredin Niazy, Behzad Hosseini Chegeni, Somaye Nouri Monfared
Iran
Paper Indexed : : 03.3005/04801048054
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Nowadays in the world of the Internet and the Web, great amounts of information in various forms and different subjects are available to users. The available information can be divided into three categories: structured, unstructured and semi-structured. Information retrieval systems traditionally retrieve information from unstructured text which is a text without marking up. XML retrieval is content-based retrieval of structured documents with XML. The aim of XML retrieval is restoring related parts of an XML document that by exploiting the document structure can respond to users' needs. In this research we will examine the XML retrieval. Moreover, models, challenges and retrieve methods exactly are studied.

Keywords:Cas, Co, ComRank, Inex, Information Retrieval, Trex, XML Retrieval

 

Research Article  open access
Prediction System for Reducing the Cloud Bandwidth and Cost
G Bhuvaneswari, Mr. K.Narayana, Erasappa Murali
Andhra Pradesh, India
Paper Indexed : : 03.3005/04801055059
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

In this paper, we present AACK (Anticipating ACKs), a novel end-to-end traffic redundancy elimination (TRE) system, designed for cloud computing customers. Cloud-based traffic redundancy elimination needs to apply a judicious use of cloud resources so that the bandwidth cost reducing is combined with the additional bandwidth cost of traffic redundancy elimination computation and storage would be reduced. AACK's main advantage is its capability of offloading the cloud- server traffic redundancy elimination effort to end-clients, thus minimizing the processing costs induced by the traffic redundancy elimination algorithm. Unlike previous solutions, AACK does not require the server to continuously maintain clients' status. This makes AACK very suitable for pervasive computation environments that combine client mobility and server migration to maintain cloud elasticity. AACK is based on a novel traffic redundancy elimination technique, which allows the client to use newly received packets to identify previously received packet chains, which in turn can be used as reliable predictors to future transmitted packets. We present a fully functional ACK implementation, transparent to all TCP-based applications and net-work devices. Finally, we analyze AACK benefits for cloud users, using traffic traces from various sources.

Keywords:Anticipating ACKs, AACK, Traffic Redundancy Elimination, TCP, TRE

 

Research Article  open access
A New Way of Identifying DOS Attack Using Multivariate Correlation Analysis
R Nagadevi, P Nageswara Rao, Rameswara Anand
Tirupati
Paper Indexed : : 03.3005/04801060064
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

This paper talked about the results of MCA on the Distributed DoS detection and suggests an example, a covariance analysis model for detecting SYN flooding attacks. The imitation end results show that this method is highly accurate in detecting malicious system traffic in Distributed DoS attacks of different forces. This technique can effectively distinguish between ordinary and attack traffic. To be sure, this technique can identify even very fine attacks only a little different from normal behaviors. The linear difficulty of the method makes its immediate detection practical. The covariance model in this document to some area verifies the effectiveness of multivariate correlation analysis (MCA) for Distributed DoS detection. Some open problem still exists in this model for further research.

Keywords:Wireless DoS, MCA, malicious node, jammer, learning patterns.

 

Research Article  open access
An Efficient FB Addressing Protocol for Auto configuration of Ad Hoc Networks
Kg Mohanavalli, P Nageswara Rao, Rameswara Anand
Tirupati
Paper Indexed : : 03.3005/04801065071
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Address assignment is a main challenge in ad hoc networks due to the lack of groundwork. Self-determining addressing protocols require a distributed and automatic mechanism to avoid address collisions in a aggressive network with paling channels, usual partitions, and adding/deleting nodes. We propose and evaluate a lightweight protocol that configures mobile ad hoc nodes based on a shared address database stored in filters that decreases the control load and makes the proposal potent to packet losses and network partitions. We evaluate the achievement of our protocol, considering adding nodes, partition merging events, and network declaration. Simulation results show that our protocol resolves all the address collisions and also decreases the control traffic when compared to previously proposed protocols.

Keywords:FB, Ad hoc networks, computer based network management

Articles

 

Research Article  open access
Effects Of Skewness On Three Span Reinforced Concrete T Girder Bridges
Himanshu Jaggerwal ,Yogesh Bajpai
M.P, India
Paper Indexed : : 03.3005/03820109
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

A very limited study has been carried out in the field of skew bridges and even that does not hold much relevance in Indian perspective due to difference in design live load standards and type of bridges being built there. Therefore it does not provide any help to designers regarding the quick estimation of design bending moments and shear forces which are of prime interest. In this paper an attempt has been made to study the effect of skewness directly on the design parameters i.e. B.M, Shear Force and Maximum Reaction in simply supported RC T-Beam 3 lane bridges. For this purpose a parametric study of Simply Supported 3-Lane T-Beam Bridge has been performed in STAAD PRO. The parameters varied were span and skew angle. The effect of same was observed on maximum live load bending moment, maximum live load shear force and maximum live load reaction at critical locations. Live Load "Class 70R Tracked "and "Class 70R Wheeled" were applied as per IRC 6 guidelines. The spans used were 10 m, 15 m, 20 m and 25 m. The skew angles were taken at an interval of 150 starting from 00 up to a maximum of 600. Bridges with skew angle more than 450 are rare.From the study it was observed that as the skew angle increases from 00 to 600 there is a consistent reduction in Moment Distribution Factor (MDF) of the inner longitudinal girder of bridge. Similar trend of reduction in MDF were observed for other spans. This suggests that skew bridges designed, ignoring the skew effect is conservative with respect to the bending moment. The effect of skew angle was also studied on the shear coefficients. The shear coefficients as increases almost linearly with skew angle and span. Hence it can be concluded that proper estimation should be made in the live load shear when designing skew bridges.

Keywords:Skew angle, distribution factor, T Beam Bridge, grillage analogy, bending moment

 

Research Article  open access
Modelling Of Water Resources in Bakaru Hydropower Plant in Anticipating Load Increment in Sulselbar Power System
Sri Mawar Said , Salama Manjang , M.Wihardi Tjaronge ,Muh. Arsyad Thaha
Indonesia
Paper Indexed : : 03.3005/0382010014
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Bakaru hydro power plan water resources model will describe a model in anticipating load growth in Sulselbar Power System until year 2030. Bakaru hydro power plan is supplied by Mamasa, Sumarorong, and Lembang watershed, water supply is influenced with rain fall volume, topography condition (steep slope, type of soil, and land use) of a water catchment area. A model is constructed using Fuzzy logic in water water inflow is Y = 0,0687X2 – 4,279X + 82,917 and erosion inflow is Y = - 0.0001X2 + 0.0106X + 0.117, the model shows that increament in operation time at catchment area where there are changes in land uses will affected lower water inflow and bigger erosion inflow.

Keywords:watershed, Fuzzy logic, catchment area

 

Research Article  open access
Performance Analysis of Neighbour Coverage Probabilistic Rebroadcast to Reduce the Routing Overhead Over Ad-hoc On Demand Distance Vector Protocol
Ms. Rajeshree Ambulkar, Prof. Milind Tote
Maharashtra, India
Paper Indexed : :03.3005/0382015019
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

MOBILE ad hoc networks (MANETs) consist of a collection of mobile nodes which can move freely. These nodes can be dynamically self-organized into arbitrary topology networks without a fixed infrastructure. One of the fundamental challenges of MANETs is the design of dynamic routing protocols with good performance and less overhead. Many routing protocols, such as Ad hoc On-demand Distance Vector Routing (AODV) [1] and Dynamic Source Routing (DSR) [2], have been proposed for MANETs. The above two protocols are on demand routing protocols, and they could improve the scalability of MANETs by limiting the routing overhead when a new route is requested [3]. However, due to node mobility in MANETs, frequent link breakages may lead to frequent path failures and route discoveries, which could increase the overhead of routing protocols and reduce the packet delivery ratio and increasing the end-to-end delay [4]. Thus, reducing the routing overhead in route discovery is an essential problem. Existing routing protocol for MANETS has a problem that they used broadcasting which induces excessive redundant retransmissions of RREQ packet and causes the broadcast storm problem, which leads to a considerable number of packet collisions, especially in dense networks. Because of this routing overhead of network increases which leads to broadcast storm problem. Therefore the proposed system try to reduce this routing overhead.

Keywords:Mobile ad hoc networks, neighbor coverage, network connectivity, probabilistic rebroadcast, routing overhead.

 

Research Article  open access
Simulation of Two-Concentric Ring Microstrip Patch Antenna
Dr. K. Kumar Naik , Harini Appana , Prasanth Palnati, Priyanka Kotte
A.P, India
Paper Indexed : :03.3005/0382020023
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

In this paper, we are analyse a two-concentric microstrip patch antenna for GPS application. In the literature survey, most of the literatures are available on different types of antennas, but few publications are available on microstrip patch antenna for GPS application. Microstrip patch antennas are very compact and low in cost. The concentric array has high directivity when compared to the linear array and this concept is applied to the microstrip patch. We are able to obtain low return loss. In view of that, we are designed a concentric circular microstrip patch antenna.

 

Research Article  open access
Modeling of Dissolved oxygen and Temperature of Periyar river, South India using QUAL2K
Lakshmi.E, Dr.G. Madhu
Kerala, India.
Paper Indexed : : 03.3005/0382024031
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Numerous studies has been done on the water quality of river Periyar, South India. Most of the studies are done when a pollution event occurs. Such random analysis does not suffice the need for a management plan. Inorder to prepare a management plan, understanding past and present trend of the river is very much important. Moreover, prediction of future will give a clear pathway in preparing the framework for conservation of river. Here, in this article, variation of water temperature and dissolved oxygen through 28 year time period is evaluated using trend analysis. Then, surface water temperature and dissolved oxygen are modeled using QUAL 2K with 2007-2008 monthly data. WEAP water quality model was used for forecasting of QUAL 2k model. From the analysis, we could find that there is an annual increase in surface water temperature and decrease in dissolved oxygen per year. QUAL 2K model shows that the trend of surface water temperature and dissolved oxygen in the river is in agreement with the calibrated 2008 and 2013 data. From the WEAP analysis, we could observe that by 2030 surface water temperature of the river would be 29oC and dissolved oxygen would be 3.7mg/l. Such studies will help in evaluating new management plans for the future health of the river.

Keywords:Dissolved oxygen, Forecast, QUAL2K, Surface water temperature, Trend analysis, WEAP, Water quality modeling.

 

Research Article  open access
Design Of QOS Aware Light Path Planning And Technical Aspects In Wdm Networks
Ashish Kumar,Prof. R.L.Sharma
Ghaziabad, India.
Paper Indexed : :03.3005/0382032038
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

In this work, theissueofconnectionprovisioning andperformanceanalysisin wavelength division multiplexing (WDM) network is considered. We ensured the quality of service (QoS) requirement of the connection requests from the client in the optical networks. While designing WDM system, the physical layer impairments (PLIs) incurred by non-ideal optical transmission media, accumulates long the optical path degraded the QoS. For high transmission speed Dispersion become a consider able degradation factor and in this work will be concentrated on the effects of dispersion on fibered sign parameters such as band width, delay etc. The overall effect of dispersion is described in terms of quality factor (Q-Factor) and improvement in blocking probability is observed over proposed algorithms and traditional algorithms. In this work the light path provisioning mechanism is based on both Q-Factor and blocking probability. Each path is provisioned that satisfy the requirement of client in the network model. A proposed algorithm and the traditional algorithm provide the improvement in blocking probability for incoming requests while considering impairment issues. In this work, the impact of dispersion on transmission performance of WDM network, by ensuring the QoS requirements, is evaluated. It is necessary to provide the best service to the customers. The aspect WDM network model can be specified in terms of QoS parameters such as bandwidth and delay. The QoS requirement, in terms of Q-Factor, is associated with the optimum light path. For high transmission speed, the dispersion becomes a considerable degradation factor. This work improves the blocking probability while performing the optimum routing.

Keywords:Blocking probability, Disjoint Path, OVPN, PMD, Q-Factor, Shortest path,WDM. etc.
Research Article  open access
Cuckoo Search Based Threshold Optimization for Initial Seed Selection in Seeded Region Growing
M.Mary Synthuja Jain Preetha, Dr. L.Padma Suresh, M.John Bosco
Kumaracoil,India
Paper Indexed : :03.3005/0382039042
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

Image segmentation is the process of grouping pixels into different distinct regions. Seeded Region Growing (SRG) is a method of image segmentation, in which a pixel is used as seed pixel from which the regions start growing. Different seeds provide different results. In this paper we propose a threshold optimization technique using cuckoo search optimization algorithm for initial seed selection. The cuckoo search algorithm is used to find the optimal threshold values which maximize the fitness function..

Keywords:Seeded Region Growing, Cuckoo Search, Optimization
Research Article  open access
Development of Self Repairable Concrete System
Sahebrao.G.Kadam, Dr. M.A.Chakrabarti, S.V.Kedare
Mumbai, India
Paper Indexed : :03.3005/0482043048
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

This study aims to develop self repairable concrete as a new method for crack control and enhanced service life in concrete structure. This concept is one of the maintenance-free methods which, apart from saving direct costs for maintenance and repair, reduce the indirect costs. We are going to develop the self-repairing concrete by adding the materials from inside the concrete to repair. Our technique to develop self-repairing concrete consists of embedding repairing materials in hollow ducts in the repairing zone before it is subjected to damage. Therefore when cracks occurs this repairs materials will get released from inside and it will enter the repairing zone. Where it will penetrate into cracks and rebound to mother material of Structure and it will repair the damage.

Keywords:Concrete – Serviceability – Cracks - Epoxy resins - Repairs
Research Article  open access
Case Study on Injection Moulding Windsor 650 Machine Parameters on Wall Thickness Variation Defect
K. Raghavendra Kasyap, M Subba Rao
Andhra Pradesh, India
Paper Indexed : :03.3005/0482049053
International Journal of Computational Engineering Resaerch 2014, Volume 4 ~ Issue 8 (August 2014)

Abstract

In present scenario, injection moulding is most suitable manufacturing process for developing a plastic product. While developing a plastic product through injection moulding Windsor 650 machine, various defects are occurred internally and externally. Optimization of various parameters may reduce the defects of products and effect on the quality of the product. The purpose of this paper is studying the effect of various injection moulding Windsor 650 machine process parameters on Wall thickness variation defect. The Wall thickness variation is the most common defect which will form internally. To reduce the Wall thickness variation defect the various process parameters of injection moulding Windsor 650 machine are optimized by using Design of Experiments method.

Keywords:Design of Experiments, Injection moulding, Optimization, Process parameters, Wall thickness variation defect.