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Volume 5 Issue 1 (January 2018)

S.No. Title & Authors Page No View
1

Title : Determination of Soil-to-Plant Transfer Factors for Ra-226 and Ra-228 in Some Egyptian Crops

Authors : W. M. Abdellah, A. El-Sharkawy

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Abstract :

Soil to plant transfer factors (TFs) of 226Ra and 228Ra have been determined for different crops, such as Cabbage, Cucumber, Kale, Aubergine, Pepper, Zucchini and Tomato. The crops were collected from some local farms in Al-Qalyubia governorate Egypt under outdoor ambient tropical conditions for two growing seasons 2014 & 2015. The crops samples and their corresponding soils were analysed for 226Ra and 228Ra using High Purity Germanium Detector (HPGe). Quality assurance objectives were followed through the efficiency calibration of the HPGe detector, background estimation, assessment of combined uncertainties and the analyses of IAEA certified soil and plant reference materials. The total activity concentrations of 226Ra(238U), 232Th and 40K in soil were ranged from 6±1.2 to 87.5±4.5, 3.8±1.2 to 19.3±2.0 and 91.3±4.1 to 781.8±37 Bq kg-1 respectively. The average activities of 226Ra and 228Ra in the crops under this investigation ranged from 0.1 to 2.8 and 0.2 to 13.9 Bq kg-1 dry weight respectively. Cabbage and Cucumber showed maximum concentration ratios of 0.07 for 226Ra whereas for 228Ra Cabbage and Aubergine had relatively higher values of 0.13. The results obtained are within the range of the corresponding values reported by IAEA in 1994 & 2010. The present work may provide a database of TFs for these agricultural environments to be used in radiological safety assessment models.

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2

Title : Combined Convection Heat Transfer at the Entrance Region of Horizontal Semicircular Duct

Authors : Akeel Abdullah Mohammed, Mustafa AbduI Mageed Mohammed

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Experimental study has been conducted on mixed convection heat transfer at the entrance  region of uniformly heated horizontal semicircular duct with flat plate at the bottom. The effect of  heat flux and Reynolds number on the local and average Nusselt number has been investigated. The Study has been covered a wide range of heat flux (510 ≤q ≤ 1060) W/m2 and Reynolds number varies from 500 to 2000 . The results show that, the local Nusselt number value increases as Reynolds number and heat flux increase. An empirical equation of average Nusselt number as a function of Rayleigh number and Reynolds number has been deduced.

7-12
3

Title : Detecting beats in the ECG: A comparison of time domain and morphological features using Support Vector Machines and MultiLayer Perceptron

Authors : Aunsa Shah, Seral Ozşen, Abbas Shah

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The ElectroCardioGraph (ECG) is the most widely used diagnostic test for determining heart related disease prognosis. This paper presents a comparison of two types of feature extraction methods and two types of classifiers for the detection of four types of heart beats in the ECG. The four types of heart beats considered in this work are Normal, Right Bundle Branch Block Beat, Left Bundle Branch Block Beat and the Premature Ventricular Contraction beat. The first set of features computed for each beat type are statistical in nature in the time domain and the second set of features are morphological in nature.  The values of the features in these two sets are then sent to two different classification algorithms, the Support Vector Machine (SVM) and the MultiLayer Perceptron (MLP) Neural Network. The classification results demonstrate that when comparing the chosen set of statistical and morphological features, the statistical values of each beat provide a higher detection accuracy for all beat types. Furthermore, it was also observed that when comparing the performance of the SVM and MLP algorithms for heart beat classification, the MLP was found to outperform SVM when using statistical features and when both feature sets were combined, however, the opposite was observed when only morphological features were used in which case, the SVM outperformed the MLP network.

13-16
4

Title : Directional q-Derivative

Authors : Zafer Sanli

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In this paper partial q-derivative of a two variable function f and directional q-derivative of function at the point in the direction of a unit vector are introduced and some properties of q- directional derivative are investigated.

17-18
5

Title : Numerical Simulation of High Level Sound Generated in Boiler tube Bank Duct

Authors : Masaaki Mori, Takayuki Masumoto, Kunihiko Ishihara

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Abstract :

Heat exchangers and boilers are widely used in various plants such as power plants and chemical plants. In heat exchangers and boilers, tube banks are set in a duct such that water passes through inside the tubes and warm gas outside the tubes. Due to the external flow around tube banks, the resonance phenomenon called the self-sustained tone occurs at a certain velocity. The self-sustained tone might cause noise problems in the surroundings, cause losses due to plant shutdown, etc. The self-sustained tone has been studied, and the generation mechanism has been experimentally and numerically clarified. In this paper, we have performed numerical simulations of high level sound generated in boiler tube bank duct with the flow and an acoustic simulation without the flow for a practical generation prediction of a self-sustained tone. The results show a good agreement with measurement data, and that acoustic resonance phenomenon has been numerically captured and clarified. There is the slight difference in the resonance frequencies obtained from the acoustic simulation (without the flow) by means of BEM and the CFD simulation or the experiments due to the absence or presence of the flow.

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6

Title : Assessing Design Strategies in Modular Product Development

Authors : Bing-Hsuan Wu, Chung-Chuan Wang, Chung-Shing Wang, Ching-Hu Yang

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In the process of product development, it is essential to grasp customer preference and reduce development cost accurately. How to use product modularization to improve sharing of components in mass production, to meet the demand of consumers by the advantage of product diversity, is an important topic worth discussing. In this study, the modular architecture of product components was established by the domain mapping matrix. First, fuzzy Delphi method was introduced to evaluate the criteria of customer requirements. Secondly, design structure matrix method categorized the customer requirements to the goals of design and parts to the modular groups. Finally, analytic network process based on super matrix were used to find the weights for modular parts and assess the design strategies for a product development. Based on the research, three upright fitness bicycles were designed to realize the concept of product diversity.

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7

Title : Design and Development of Self-Governing Robotic Cart for Universal Applications

Authors : Dr. M. Karthik, K. Sudharshan, D. Subramani, S. Nivethitha

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Abstract :

In this paper, we describe a concept of designing a robot capable of pursuing a specific person with carrying person’s luggage. The proposed system involves robotic cart which is able to track and follow the target in unstructured environments. This reduces the human efforts in domestic and industrial applications. A person following robot is desired in many applications. It uses a control system which can carry luggage as well as follow the target person. The follower robotic cart is proposed by interfacing the microcontroller with an ultrasonic sensor. Ultrasonic sensors are used to identify and follow the target person. The system is designed to provide a contactless transport along with the target person. The distance between the person and the robot is measured and the movement of the robot is decided by the inputs given to microcontroller by ultrasonic sensors mounted on servo motor which helps to drive the robot.

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8

Title : The Effects of Air Pollution on Damages in Historical Buildings, the Case of Gaziantep, Turkey

Authors : Tulay Karadayi Yenice

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Abstract :

Conservation of historical buildings and monuments and handing them down to future generations is one of the main issues of architecture. Contrary to popular belief, preserving these constructions for centuries may be difficult under the changing conditions in the world, in spite of the opportunities of the improving technology. Air pollution is one of the greatest protection issues for these structures to be preserved against. The major causes of air pollution may include the use of fossil fuels in transportation and electricity generation, burning of the solid waste, industrial and local use of fuel, and industrial activities. The aim of this research is to determine the impact of air pollution on the deformations at the historical buildings in Gaziantep's historical city centre. The traditional monumental and civil architectural works made of stone materials constitute the basic material of the research. In the study, the effects of SOx and NOx, and particulate matters, the most important pollutants originating from the weather conditions and causing deformation at the stones, were evaluated and the harms were determined. As a result of this study, it is identified that the most important effect of air pollution on the stone material is the formation of crust. The crusting not only affects the structure of the stone but also it may cause exfoliation and stratification. Abrasion is another effect of air pollution on the stone. However, it has been seen that the importance of this effect is less than the other factors related to air pollution.

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9

Title : Comparative Analysis Of Linear/Arithmetic And Geometric Model On Livestock Population In Nigeria

Authors : Mashood Ayinla Rasaq, Aminu T.F., Olatinwo. M.

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This research is carried out to compare the linear/arithmetic and geometric model on the livestock’s population in Nigeria from 1961 to 2010.Data were collected  on the livestock’s population (Grazing livestock: cattle, sheep, goat and buffalo) from 1961 to 2010 in Nigeria. However, mathematical population projection models that is (linear, and geometric models were applied to determine the rate of population growth and to construct the model. Each of the model were used to estimate the livestock’s population and comparison was done between estimate from each  model with actual livestock’s population to find the model that produce the closest values(estimated values) to the actual livestock’s population. The model that produces the closest estimated livestock’s population is considered to be the best model. The best model is linear and is therefore used to predict the livestock’s population in Nigeria from 2011 to 2060. Base on this livestock’s population forecast, recommendation was made to the government and other stakeholders that there is  need for proper management of these livestocks since their significance on economy and importance to human cannot  be over-emphasized.

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10

Title : The Estimated of Boron Concentration in Water Samples of the north of Basrah Governorates Using AAS Techniques

Authors : Thaer M. Salman, Mustafa M. Jafer

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Significant risks for human health may results from exposure to non pathogenic toxic contaminants that are often globally ubiquitous in waters from which drinking water is derived to measure the Boron, 105B concentration in water samples in Basra governorate in north of Iraq. The measurements were performed by analyzing the water samples collected from 55 location using AAS Technique. The Boron concentrations which are obtained ranged from 0.1185 ppm in Alhwair - Al-Samayd to 1.539 ppm in Hawair- Harde river in water samples. The results are presented and compared with other studies. The results could be utilized to make distinctive supplementary contributions when contam- ination event occurs and to implement water quality standards by concerned authorities to maintain radioactive contamination-free drinking water supplies for the people. The study further reveals that 55 surface water samples have boron below detection limit. The presence of boron in drinking water sources in this territory is of natural origin. Thus, there is possibility of severe pollution problem with boron in near future. 

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11

Title : Position Estimation and Control of BLDC motor Based on Hall effect sensor and Angular Magnetic Encoder IC

Authors : Hamzaoui Nabil

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In the last few years the high efficiency, reliability and the low cost of both permanent magnet synchronous machine (PMSM) and brushless direct current motors (BLDC) in industry and many applications drives most companies and laboratories throughout the world to focus on those type of machines. BLDC motor has advantage of long lifetime, faster response and capability of highspeed drive in comparison with brushed DC motor and has been more widely used in industrial area in line with the development of power switching device, microprocessor and digital technology. The control of BLDC motor is one of the most side should take on consideration when we talk about this type of motors. there are two main technologies to control BLDC, sensors and sensorless control. in this paper two types of sensor control methods are presented. First a hall effect sensor is studied, the study including both theoretical and practical part with experiment and results. on the other hand, and the main focus of this work is the design and implementation of an angular magnetic encoder IC which is AM8192B. the implementation contains a general description of the chosen model, then the schematic part using Altium designer software and hardware construction; Printed Circuit Board (PCB). The last part of this work is testing of the implementation encoder for detection angular position of BLDC motor, and shows the original results of the designed encoder.

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12

Title : Availability Analysis of a Markovian System with Preventive Maintenance

Authors : Yutae Lee

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This paper deals with a Markovian queueing system, in which the system can fail either partially or completely. The partially failed system can fail completely, or still be operative during maximum operting time. After maximum operintig time, the partially failed system is shutdown for preventive maintenance. When completely failed, the system is repaired. The system works as new after preventive maintenance or repair. The steady-state availability and the expected profit is analized analytically.

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13

Title : Study on Noise Reduction of High-Powered Suction Truck (Consideration of phase difference between two pressure fluctuations of SHAC silencers)

Authors : Kunihiko Ishihara, Tomoya Hamada, Toshinobu Iwamoto

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A main noise source of the high powered suction truck is a pressure fluctuation of a blower and the noise is radiated from the final component named “4th catcher”. Two holes are provided at the upper and the lower parts of the blower as a means to get cool the blower and two SHACs (Self Help Air Conditioner) are connected to the blower by two hoses. The present study aims to clarify the achievement of the noise reduction to use the phase difference which can be made by two different lengths of hoses. As a result, the use of fluctuating pressure data before connection of two ports doesn’t go well in the prediction of the noise reduction but go well by use of the data after the connection and the phase difference is the most important factor in the prediction of the noise reduction in using the idea of the interference type silencer.

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14

Title : Geo/Geo/c/N Queue with Multiple Servers and Retention of Reneging Customers

Authors : Yutae Lee

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This paper considers a discrete-time Geo/Geo/c/N queueing system with geometric arrivals, multiple servers, geometric service times, and retention of reneging customers. The limiting probability distribution of the number of customers in the system is derived. The blocking probability of arriving customers is also obtained.

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15

Title : Discrete-time GeoX/D/c/N Queueing System with Batch Geometric Arrivals, Multiple Servers, and Retention of Reneging Customers

Authors : Yutae Lee

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This paper considers the design and analysis of a discrete-time GeoX/D/c/N queueing system with batch geometric arrivals, multiple servers, and retention of reneging customers. This paper derives the limiting probability distribution of the number of customers in the system and also obtains the expression for the proportion of arriving customers that are blocked.

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16

Title : A Class of One-Step Hybrid Third derivative Block Method for the Direct Solution of Initial Value Problems of Second-order Ordinary Differential Equations

Authors : Skwame Y., Raymond D.

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In this paper, we consider the development of a class of one-step hybrid third derivative block method with three off-grid points for the direct solution of initial value problems of second order Ordinary Differential Equations. We adopted method of interpolation and collocation of power series approximate solution to generate the continuous hybrid linear multistep method, which was evaluated at grid points to give a contnuous block method. The discrete block method was recovered when the continuous block method was evaluated at selected grid points. The basic propertise of the method was investigated and was found to be zero-stable, consistent and convergent. The efficiency of the method was tested on some stiff equations and was found to give better approximation than the existing method, which we compared our result with.

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17

Title : Design Development Strategy with Quality Function Deployment Approach : A Case Study in E-Commerce Industry

Authors : Rahmad Rezeki, Humiras Hardi Purba, Siti Aisyah

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E-commerce is one of the growing business sectors in Indonesia. This can be seen by the increase in e-commerce transactions amounting to Rp 25.1 trillion in 2014 to 89 trillion in 2017, as well as the increase in e-commerce of companies  which recorded 26.2 million. The number of e-commerce users in 2016 reached 25.1 million and is expected to continue to increase to 39.3 million users by 2020. The number of high e-commerce users in Indonesia does not always indicate that customers are satisfied with the quality of service from e-commerce. Further,  there are 16 problems that cause complaints about e-commerce. Research shows that there are 5 main issues that cause e-commerce customers to complain. Based on the above data and phenomena it can be argued that products and services provided by e-commerce companies do not  lead to customer satisfaction. Deployment Function Quality (QFD) is used to improve the quality of e-commerce services. The results show that the customers’ voice seeks the following improvements to service quality including the delivery of order is on time, the goods that were delivered were according to orders, the physical status of goods are delivered according to the ones described in the website, the response to complaints is faster, and resolution of the  complaints. The technical requirements that need to be improved to achieve customer satisfaction on the quality of e-commerce services are the presence of an order surveillance team, checking goods before delivery, call center for customer service, and clear standard operation procedures (SOPs) to resolve complaints/ disputes between markets and sellers.

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18

Title : Evaluation of Swelling Control Parameters for Stabilized Expansive Soil Buffer Layers under Pavement Embankment

Authors : Prof. Manoj Anaokar, Dr. Sharad Mhaiskar

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Flexible Pavements constructed on expansive soils like Black Cotton (B.C.) soils, suffer extensive damages due to volume changes and the resulting swelling pressures. The magnitude of the swelling pressure depends on various parameters but the moisture content variation which occurs during different seasons is the major cause of volume changes. To control this moisture variation, present study suggests to lay a lime stabilized buffer layer below the road embankment. This layer will be underlain by a mechanically stabilized layer with vertical cut-offs on either side. For the success of this methodology, it is necessary that, the swelling pressures of the stabilized layers of B.C. soil should be first lowered. The success of this protective methodology will also be depending upon the of moisture content at which these layers are to be compacted and also on the estimation of optimum percentage of lime to be used for stabilization. A combination of measures can be used to minimize the replacement of BC soil and its resulting impact on overlying structures especially pavements. The aim of the present work is to study these two parameters. Subsequently these properties will be used in recommending a combination of measures to minimize detrimental effects on overlying flexible pavements. Therefore, it is necessary to find out the relation between swelling pressure and those standard reference moisture contents such as Shrinkage Limit (SL) and Optimum Moisture Content (OMC) which being the properties of any given soil, will not vary with time. In the present study, therefore, SL and OMC are considered as the reference moisture contents for the soil and the variation in swelling pressures of the soil is studied at SL, OMC-2%, OMC and OMC+2%. The present study also, attempts to find out the possibility of using Shrinkage Limit value as a parameter in finding the optimum percentage of lime. X-Ray Diffraction tests were also carried out to study the effect of mineralogy on the observed swelling behaviour of the soils.

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19

Title : Designing a strategy to obtain technological solutions with co-creation and design thinking tools

Authors : Cubillos Rojas. Angela Patricia

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The study of the technological design solutions is intended to enhance the technical micro design while remaining respectful of the people, including the social, cultural and environmental context-specific.  This is a cross-sectional study, which with a Multi-method approach, which uses co-creation a central concept, using as data collection device like the participant observation, the use of interviews and the collaborative participation of the target population. On this research we included individual was involved in the technical basic tasks with and without technical tools, they was individuals with accumulated experience of one year in their work. The data logging process was carried out in three cycles of observation, work team video records and collection of on-worksite interviews. As a result, we set the creation principles of working groups, their organizational strategies, techniques and some of the components of hard and soft character. The findings indicate the existence of mechanisms of self-regulation in the process of value creation, as well as the use of implicit knowledge directly linked to previous experiences, they which act as articulators of the activity techniques. In the same way is identified creation techniques based on the use of basic elements, low or medium complexity that facilitates the applied usage of the experiential knowledge developed individually and collectively. 

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