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Volume 2 Issue 8 (August 2015)

S.No. Title & Authors Page No View
1

Title : Design and Optimization of a Low DC Offset in Implanted System for ENG Recording Based on Velocity Selectivity Method

Authors : Assad I. K. Al-Shueli

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The major target of this paper is the design of advance signal processing system based on minimized length of bits required for digital-to-analogy converter (DAC) for velocity selectivity recording (VSR) approach. The main application of this device is peripheral nerves recording (electroneurogram-ENG) by exploring a spectral analysis for the propagation of neural activities in the velocity domain recording using VSR in implantable application. This research adapted a flexible, compact, and energy efficient dc offset removal circuit. An optimization design has been used based on best possible process involving linearity and area is thus suggested. The system process acquired using this approach were characterized as having a 10-bit signal processing for DAC resolution, with 1.4 mA rms output current, with minimum size around 0.02 mm2 of chip area, using FPGA board as prototype design. This paper also explores the design temperature vibration in online recording; minimization the output DC offset decrease the heat emission which is significantly for long term implementation applications. This study proposed an analysis circuit configuration demonstrate that this approach could achieve a small DC offset error, with small size required.

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2

Title : A comparison between the consumption of polyethylene pyrolysis oils and diesel to supply a generator powered by a single cylinder diesel engine

Authors : George Liviu Popescu, Nicolae Filip, Violeta Popescu, Andreia Molea

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The paper presents data related to the results about the fuel consumption following the testing of a commercial diesel fuel and a fuel obtained by chemical recycling of polyethylene waste, which fueled a generator powered by a single cylinder diesel engine air cooled. The experimental results showed that using synthesized polyethylene-based fuel, the consumption of fuel from polyethylene was smaller compared to the consumption when using commercial diesel fuel.

7-10
3

Title : Indoor Air Quality and Health: Impact on Respiratory and Cardiovascular System

Authors : Tsaloglidou A., Koukourikos K., Pantelidou P., Kourkouta L.

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Introduction: Various air pollutants are found in several interior environments, sometimes at increased concentrations, and they negatively affect the indoor air quality.  Exposure to these pollutants often contributes to structural degradation and building failures within their indoor environment and can lead to numerous immediate and long-term health problems. Aim: This retrospective study provides a comprehensive review of the new evidence linking indoor air quality with its impact on respiratory and cardiovascular system. It also refers to the principal pollutants found in indoor environments and associated with harmful effects on health. Method: A review of the Greek and international literature on the issue was performed through the electronic databases Pubmed, Google Scholar, Scopus and scientific journals, using the following key words: Indoor Air Quality, Indoor Air Pollution, Cardiovascular disease, Respiratory disease, Risk factors Results: Indoor air pollution increases the risk of chronic obstructive pulmonary disease, causes or contributes to the development of acute respiratory infections, lung cancer, and chronic lung diseases such as asthma and it has also been associated with many cardiovascular diseases. Conclusion: The indoor air quality is a significant factor in maintaining good health. Understanding of the harmful effects induced by indoor air pollution will help us to take all the appropriate preventive measures to reduce the possible health risks. Key-words: Indoor Air Quality, Indoor Air Pollution, Cardiovascular Disease, Respiratory Disease, Risk factors.

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4

Title : Manufacturing defects in the automobile industry, a case study of the remote causes and effects of Toyotas transmission malfunctions in cars

Authors : Bebeteidoh Oyinkepreye Lucky, Stephen Takim

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Over the years, the automobile industry has been continuously bedevilled by the continuous recall of vehicles as a result of manufacturing defects. The recall of vehicles in the automobile industry is not limited to any particular manufacturer. Defective components or parts have always been attributed for the reason for the recalls, while some have attributed it to uncontrolled growth and expansion. For automobile companies to keep up with the growth in the automobile industry; it must be ready at all times to satisfy its numerous customers with quality, reliable and affordable products. Reliability of the product is essential to keep a good customer base. The competitive nature of the automobile industry requires that companies comply with international safety standards in the manufacture of cars while ensuring that components and parts supplied to production shop floor are capable (CP), and where defects have been identified, Failure Mode Effect Analysis and Critical Analysis (FMECA) be carried out on such components. The aim of this research paper is to investigate the causes of manufacturing defects in the automobile industry, a case study of the remote causes and effects of Toyota’s transmission malfunctions in cars. In other to achieve this, the number of recalls from various automobile companies was investigated, with a detailed case study analysis, with SWOT and PEST analysis on the case study company.

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5

Title : Frictional Properties of Canarium Schweifurthii Engl. Fruits and Their Interaction with Moisture Content and Shape

Authors : J. C. Ehiem, V. I. O. Ndirika, G. S. Vijaya Raghavan

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The effect of shape and moisture content on frictional properties (angle of repose, coefficient and angle of internal friction) of three varieties of canarium schweifurthii engl fruits (small, large and long varieties) were studied at five moisture content levels: 40.9%, 34.9%, 23.4%, 18.5% and 11.0% wb, so as to design and develop bulk handling and mechanical processing equipment for the fruits. This will replace and overcome conventional method and its associated problems. Coefficient of friction on different material surfaces (plywood, metal and glass) was also investigated. The results obtained revealed that moisture content and shape were negatively correlated to frictional properties. Coefficient and angle of static friction of Canarium Schweifurthii small and long varieties increased linearly with decrease in moisture content and shape.  The surface of long variety of Canarium Schweifurthii (CSHTL) is rougher and slightly round, while the small variety is smoother and less round in shape. Besides, friction on material surfaces increased with decrease in moisture content. Metal surface had the highest rough surface with canarium schweifurthii fruits for all the varieties and surfaces studied. Moisture content and shape also influenced angle of repose significantly (p<0.05) while canarium schweifurthii small fruits (CSHTs) had the highest pile angle. Frictional properties of canarium schweifurthii fruits differ significantly (p<0.05) with the varieties.

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6

Title : Influence of process parameters on Electrodeposited Ni-Al₂O₃ composites by conventional and sediment type of co-deposition by Grey Scale Analysis

Authors : Madhan Gopal M M, Vishnu P S, Jeyaraj S, Arulshri K P

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Ni-AlO composites are prepared over a mild steel specimens using electrodeposition method. The coatings are prepared by conventional and sediment type depositions using watts type nickel with AlO. Three primary plating parameters are considered for electro-deposition, namely current density, temperature of the bath, particle concentration in bath with three levels for both conventional and sediment type depositions. L-9 orthogonal array of taguchi design is chosen for experimental design. The deposited coatings are examined with optical microscope, SEM micro graphs, XRD and EDX investigations to confirm the deposition. The influence of parameters on micro hardness of electro-deposition was investigated with signal to noise ratio analysis for both conventional and sediment type deposition. It is inferred that current density and temperature of the bath has a sound effect on micro hardness of coating by conventional type of deposition whereas temperature of the bath and particle concentration has a major effect on micro hardness of coating by sediment type of deposition. Grey scale analysis was employed to indentify the significance of process parameters and optimization of process parameters for the better micro hardness values.

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7

Title : Rapid sun light degradation of Rhodamine-B, Methylene blue, Methyl orange, Congo red and their binary mixtures using suprastoichiometric Bi - Molybdate

Authors : P. Suresh, A.M. Umabala, A.V. Prasada Rao

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Bi2(MoO4)3 with excess MoO3 has been prepared by combustion method using Bismuth nitrate, MoO3 and glycine. The sample as prepared showed excellent photocatalytic activity for the degradation of Rhodamine B, Methylene blue, Methyl orange and Congo red in presence of H2O2 under direct exposure to sun light. Complete degradation of separate 100ml aqueous solutions containing 5ppm Rhodamine B, 10ppm Methylene blue, 5ppm Methyl orange and 20ppm Congo red with 100 mg of dispersed catalyst occurred in 60, 120, 70 and 60 min respectively. Binary mixtures of aqueous solutions containing different dyes also showed complete bleaching in 60 to 150 min of exposure to sun light. Photoluminescence studies using terepthalic acid showed generation of .OH free radicals in the solution during irradiation. Synergitic effect is noticeable for Bi2Mo3O12 with MoO3 towards degradation of pure dyes as well as their mixtures. 

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8

Title : Protection of Consumers in the Age of Rising Economic Complexities in India

Authors : Dr. Humayun Rasheed Khan, Dr. Falak Butool

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We are living in a highly materialised, commercialised and consumerist way of life. The rising opportunity of earning and easy accessibility of modern markets has given meteoric pace to production and consumption. The modern day scientific and technological advancements have further intensified consumerism. But these developments have also provided greater space for financial deceptions and fraudulent transactions. In most simple terms, a seller sells a product to a buyer, the buyer finds the product not to be upto his satisfaction, some would say it is a mere co-incidence but is it so? In the absence of definitive statistics, the instinct of a consumer living in a capitalist society would lead one to wonder if the seller intentionally did or did not do something that led to a compromised consumer satisfaction. The need for the protection of the rights of the consumer also demands greater concern of the policy makers, quasi- judicial bodies and non- governmental organisations in this new age of commercialisation. This paper focuses on the statutory protection provided to the consumers in India, consumer services, penalties and issues of fairness and transparency.

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9

Title : Study of Computer Malware and Its Taxonomy

Authors : Bishir Suleiman, Rashid Husain

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There are widespread availability and use of information technology devices capable of accessing the Internet from any remote location. While communicating via the Internet, each of these devices face a major challenge - malicious codes that alter their actual behavior, function, etc. Malicious codes result in heavy damages to computer owners, users, and the society at large. This study describes the general architecture of computer malware. It focuses on the classification of computer malware using three (3) suitable criteria. It proposes the likely properties of future computer malware going by the trend in their development. Our future work would focus on developing a model for worm-attack and simulating it against campus network. It choose computer worms because of the enormous devastating effects they cause as commonly experienced on computers connected via network. 

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10

Title : Modeling and Simulation of Worm Propagation and Attacks against Campus Network

Authors : Rashid Husain, Bishir Suleiman

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We develop a model of worm attack against campus network in accordance with the campus signal flow as committed by an external attacker (or intruder) and examine the worm-flow behavior and its rate of infection. Modeling and simulation are two basic integral components employed to test-run the model using Optimized Network Engineering Tool (OPNET) and two forms of statistical events were considered. The object statistics is mainly comprised of our modeled Campus network signal flow plus the attacker and the Global statistics gives an account of the result of the simulation as it shows the number of infected host systems over the network under consideration. We further analyze the result from three perspectives, namely: ‘’As Is, Multiplier and Average.’’ We recommend that the infection rate of worm viruses be investigated from an attacker situated or positioned internal to the network (i.e. an authorized user distributing worm) under consideration.

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11

Title : Performance Enhancement of Inclined Bubbling Fluidized Bed Paddy Dryer by Design Modification

Authors : Phyu Phyu Thant, P. Mahanta, P.S. Robi

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Present paper discusses the bed inclination and passive inserts of dryer on drying of paddy in a bubbling fluidized bed dryer. Paddy was dried in three different inclined positions, viz., vertical bed (0° inclined), 15° and 30° in a bubbling fluidized bed. Experiments were conducted for 0.5 to 2.5 kg batch size with superficial velocities of 1.1 m/s and 1.6 m/s. All the experiments were repeated with and without spirals inserts. Results were obtained for air temperature of 55°C, 60°C and 65°C and air velocities of 1.1 ms-1 and 1.6 ms-1 respectively. Better results in terms of energy consumption and moisture removal rate were observed with bed inclination of 15˚. Use of spirals inside the drying chamber with inclined dryer reduces drying time as well as reduces energy consumption significantly.

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12

Title : Simulation and Performance Analysis of a Novel Seven-Level Inverter with DC-DC Converter for Photovoltaic System

Authors : Dr.R.Seyezhai, P.Vaishnavi

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This paper deals with simulation of PV based single-phase seven level inverter employing maximum power point tracking algorithm. Incremental conductance (INC)is employed in this work  because it has high tracking accuracy at steady state and good adaptability to the rapidly changing atmosphere. A novel dual carrier PWM is employed for the proposed inverter. A detailed study of PV based seven level inverter is carried out in MATLAB/SIMULINK and the performance parameters such as crest factor, peak to average ratio, weighted THD, harmonic spread factor and Distortion factor of the proposed inverter are computed and the results are verified.

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13

Title : The Relationship between Locus of Control (Internal - External) and Self-Efficacy Beliefs of Yazd University of Medical Sciences

Authors : Mohammad Mehdi Ashagi, Malikeh Beheshtifar

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The aim of this study was to investigate the relationship between locus of control (internal - external) and the self-efficacy beliefs of Yazd University of medical science. The research population consisted of the Yazd Central University of Medical Sciences staff 534 people using Cochran formula the sample size was 220 people. Instrument was two questionnaires self-control and self-efficacy and the validity of the questionnaires was 0.82, 0.87, and reliability 0.8260 and 0.880 respectively obtained. To investigate the hypothesis Pearson, Spearman, log-linear regression tests used. The results showed that there is a direct and meaningful relationship between internal locus of control and self-efficacy beliefs. However, there was not a meaningful relationship between external locus of control and self-efficacy. To achieve the organization's employees with high self-efficacy, locus of control considered as a factor-affecting self-efficacy.

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Title : The Moderating Role of Psychological Maturity on the Relationship between Nurses Career Plateau and Burnout in Arjomand and Razieh-Firoz Hospitals in 2014

Authors : Malikeh Beheshtifar, Mahmood Nekoei Moghadam

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Career burnout is a painful experience for individuals and for organizations is a costly phenomenon. Plateau is a key factor for increasing this problem and mental maturity could reduce to some extent the relationship between the two variables. Hence, the aim of this study was to investigate the relationship between career plateau and burnout due to the moderating role of nurse’s psychological maturity in Arjomand and Razieh-Firoz hospitals in 2014. In this study, correlational and cross-sectional method is used. The population of this study consisted of nurses in Arjomand and Razieh-Firoz hospitals that the total number is 142 people. To determine the sample size of 100 people chosen based on Morgan table. The study used three questionnaires: plateau questionnaire validity 0.98 and reliability 0.94-questionnaire career burnout with validity 0.98 and reliability 0.93 and the questionnaire individual trust with reliability 0.94 and validity of 0.92 and mental maturity questionnaire validity 0.95 and reliability 0.88. For data analysis, the approach of partial least squares (PLS) with Smart PLS 2 software used. The results showed that there is relationship between plateau and its components with career burnout in Arjomand and Razieh-Firoz hospitals. In addition, there is not relationship between the moderating role of nurse’s psychological maturity of plateau (plateau job content) with career burnout, in Arjomand and Razieh-Firoz hospitals. However, there is an inverse relationship between the moderating role of psychological maturity at plateau hierarchical relationship with nurse’s career burnout in Arjomand and Razieh-Firoz hospitals. Given that the individual is suffering from fatigue, soon with his colleagues, and the devastating effects that the erosion of the effectiveness and performance of the individual, the individual diagnosis and prevent the spread of the organization are essential. One of the aggravating factors is plateau that should consider in the organization. If the nurses in the workplace has high psychological maturity they can enjoy some plateau hierarchical relationship and reduce burnout. Therefore, the promotion of psychological maturity and reduce the plateau at work considered.

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15

Title : Electrical Characterization of a New Established Inductance Box Using an Automated Measurement System

Authors : M. Helmy A. Raouf, A. Eliwa Gad, El-Sayed Soliman A. Said , M. A. Elwany

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Inductance box is an instrument that generates a variety of inductance values, which are used to verify the accuracy and to calibrate inductance measurement devices. In this paper, characterization of a new fabricated inductance box has been investigated by using an automated system developed for inductance measurements. The new verified inductance box had been constructed by three inductance decades giving 4096 inductance steps using the all possible combinations. The output inductance steps of this inductance box have been measured for each decade at different frequencies over the range form 1 kHz to 10 kHz to study its frequency dependence as will be illustrated in this research. At different voltage values in the range form 0.6 V to 2 V, the output inductance values have been also measured to demonstrate the voltage dependence of the tested inductance box as will be presented in this work. All practical results of each decade at different frequencies and voltage levels have been carefully analyzed through accurate calculations and necessary representing figures as will be clearly described in this paper. Relative accuracy of this inductance box is in the range from 5×10-4 to 5×10-3 at 1 kHz and 1V. Its relative uncertainty due to the summation effect has been founded to be less than 6×10-5. The relative expanded uncertainty for such automated systems is typically less than 0.025%.

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Title : Background Terrestrial Radiation Exposure Level Of Cross River University Of Technology (Crutech), Calabar Nigeria

Authors : Ushie P.O, Pekene D.B, Egeshi C.M, Ohakwere-Eze M.C

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Background terrestrial radiation survey of Cross River University of Technology (CRUTECH), Calabar was carried out. The study area was divided into twelve (12) locations and investigated. An in situ measurement approach was adopted using a SOEKS ecotester Geiger counter + food nitrate tester. Three (3) reading were taken in each of the location in survey and then an average computed. The outdoor annual exposure dose rate (OAEDR) of each location was also calculated. The measured average background radiation for all the location was (0.07±0.02)µSv/hr while the average OAEDR was found to be (0.13±0.02)mSv/yr. These values fall within the safe radiation limit of 0.13µSv/hr and 1.0 mSv/yr recommended by UNSCEAR (1998). However, results obtained do not indicate any immediate health side effects on the staff and students and the host communities. 

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17

Title : Effect of Radiative Heat Transfer on Cosmic-Ray Transport in a Rotating Cloudy Interstellar Medium

Authors : Pekene D.B.J, Ekpe O E

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Radiative heat transfer on cosmic rays (cr) in a rotating cloudy interstellar medium is modelled by imposing  a time dependent perturbation on the cosmic transport in the interstellar medium containing randomly distributed giant diffused molecular clouds the temperature involved are assumed to be large so that radiative heat transfer is significant. This renders the problem very nonlinear even on the assumptions of a differential approximation for the radiative flux in a adiabatic concentration and zero activated energy. When the perturbation is small, the transient flow is tackled by the laplace transform technique, giving solution, for steady state spectrum of cosmic ray in the galaxy temperature up and down stream concentration, also velocity analytical and numerical solutions were obtained for temperature. Velocity of the down and upstream concentration in cases where radiative heat transfer through the rotating medium are taken into account. The incorporation of radiative heat transfer is of particular relevance to cosmic ray transport whose temperature is usually very high which radiate a lot of heat through the media which surround them.

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18

Title : Study on Computer Trojan Horse Virus and Its Prevention

Authors : ZHU Zhenfang

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In recent years, the fast development of computer network technology, has become an integral part of human’s life, work and study. But with the popularity of the Internet, computer viruses, Trojans and other new terms have become some well-known network vocabularies. Studies have shown that most users of computer are more or less suffered from computer virus. So people must attach great importance to the network security problem. The paper studied Trojan virus. Paper first introduced the concept, characteristics and categories of the Trojan virus and its harm, and then focused on the way and means of the Trojan’s spread. It introduced the Trojan virus loading and hiding technology, too. Its last part focused on the prevention measures, it put forward reasonable suggestions to users, and paper also put forward prevention advice to improve network security.

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19

Title : Research on fractal structure of generalized J set utilized compound complex map

Authors : Wang Chun-mei, Hu Chun-hua

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This paper generalizes Entwistle’s complex map as , constructs a set of generalized Julia sets(J sets) by using the escape time. Adopting the experimental mathematics method of combining the analytic function with computer aided drawing, this paper researches on the structure topological inflexibility and the discontinuity evolution law of the generalized J sets. The researches as below: ①generalized J sets have fold rotation symmetry and its center is the origin when  is integer;②the different choices of angle lead to the different evolution of generalized J sets.

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Title : Two-Factor Authentication Based Automobile Keyless Entry System

Authors : O. Akinsanmi, A.D. Usman, A. Abdulraheem, G.D. Obikoya, B.G. Bajoga

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Mechanical keys have traditionally been used to restrict unauthorized access to automobiles. In recent times, microcontrollers were embedded into cars for various applications such as passive keyless entry systems and vehicle immobilizer systems to prevent circumventing the mechanical lock to open the door and then start the engine via short-circuiting the ignition. The embedded electronic systems are very convenient to users but the security of the system can be easily breached for unauthorized access either through theft or lost and found of the car key fob, relay attacks by impostors or if the embedded code is revealed through the wireless interface scanning. In this paper, the development of an Automobile Keyless Entry System using Two-Factor Authentication is described where, the automobile would autonomously verify the users’ alongside the conventional mono-factor (i.e., device-based) automobile key fob authentication framework, thus achieving a two-factor authentication system. In addition, the new framework can prevent the three kinds of security breach scenarios. Furthermore, the car owner may allow new persons to drive the car using their voiceprints. The significance of this new framework is that it has provided high level of comfort and convenience and has eliminated the probability of theft. This paper will provide the understanding of the system to the designer of key-less systems. It will also provide designers with some ideas of how to make vehicle more secure. This paper will also benefit many people in terms of saving time and effort that would be required for them to collect the information presented in this paper by reading many published papers.

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21

Title : Design and Development of an Automatic Automobile Headlight Switching System

Authors : O. Akinsanmi, A.D. Ganjang, H. U. Ezea

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This paper presents the design and development of an automatic automobile headlight switching system. Headlights of vehicles are inherent for night driving.  These bright headlights which assist the driver for vision, while driving at night, pose a great threat to the other road users coming in the opposite direction. The bright light of the vehicles causes a discomfort in the form of a glare to the oncoming driver. As a rule in night driving, every driver is expected to switch their headlights from high beam to low beam once they spot an oncoming vehicle within 150 metres in order to reduce the glare, but this practice is hardly adhered to. This is one of the major causes of accidents during the night, as the opposing driver will not be able to see the road clearly due to the brightness of the oncoming vehicle's lights. This automatic headlight switching system switches the high beam lamp to low beam as soon as it senses a vehicle approaching from the opposite direction and switches it back to high beam when the cars pass each other. The prototype is an electronic circuit that incorporates the use of a 12 volts power supply which is provided by the car battery itself, a light dependent resistor which acts as the sensor, a potential divider network which serves as a comparator to trigger an NPN transistor connected to an SPDT relay which does the switching. It was designed, constructed, tested and it worked, sensing to a distance of 147 metres. This design minimizes night accidents occurring as a result of this glare by the introduction of automatic headlight control in automobiles. This solves the problem of switching which is not done most of the time, reduces the stress of continuously switching beams manually, hence giving the driver more concentration on the road while driving at night. This paper brings to limelight the need for manufacturers of automobiles to inculcate this in modern cars to improve on the deficiency of the existing ones.

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