Volume 9, Issue 4, April 2018 Edition


Publication for Volume 9, Issue 4, April 2018.

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Human Computer Interaction and Security (HCI-Sec)[ ]


The rapid proliferation of internet and technologies create many security related issues in business and local environment. Although the growing use rate shows that, there is a demand and need, to develop applications therefore a secure web infrastructure is also required. It is shown that privacy issues are not taken seriously by users. To provide a secure environment to the users, HCI studies and theories help to developers as HCI is highly concerned about trust of user with their proprietary information as well as enhance system's quality. This paper is about to identify user's concern about HCI-Sec in applications to ensure their personal information and highlight usability of security features in systems.

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WOLFE'S MAMMOGRAPHIC BREAST PARENCHYMAL PATTERN: A STUDY IN NORTH CENTRAL NIGERIA[ ]


Different breast parenchymal patterns are noted among women as seen on mammography and these have been classified by various ways including the initial Wolfe's method and assist as indicators of the risk of breast cancer. This prospective research carried out between 2014 and 2016 was to assess the mammographic breast parenchymal patterns according to Wolfe’s classification and determine their prevalence in our local Nigerian environment.

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Impact of Black Hole Attack on Reactive and Proactive Routing Protocols in MANET[ ]


Mobile Ad-hoc Networks (MANETs) is a self-configurable network, such that nodes connect and disconnect from the other nodes in the network automatically at any point in time. MANETs are vulnerable to various security attacks due to its characteristics of flexibility, distributed operation, node to node connectivity and so on. The focus of this work is on determining the effect of Black hole attack on MANET using Reactive routing Protocols - Ad-hoc On-Demand Routing protocol (AODV), and Temporally Ordered Routing (TORA); and Proactive routing Protocol - Optimized Link State Routing (OLSR) and Destination-Sequenced Distance- Vector (DSDV). Two network scenarios were simulated (with Black hole and without Black hole) using Network Simulator (NS-2.35) and the performance metrics considered are throughput, Packet Delivery Rate (PDR), and End to End Delay. The result showed that there were decrease in the throughput, Packet Delivery Rate and End- to-End Delay, when the network is under blackhole attack; this is more evident in AODV as compared to other routing protocols.

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Earthquake Prediction based on Spatio - Temporal Data Mining Approach[ ]


Disaster Management is an organization and management of resources and responsibilities for dealing with all human iteration aspects of emergencies, in particular preparedness, response and recovery in order to minimize the impact of disasters. Apriori is one of the most crucial algorithm for frequent item set finding. In this present work also deals with analyzing the earthquakes, that can range in size from those that are so weak and that cannot be felt to those violent enough to toss people around and destroy whole cities.

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Synthesis of Bio-diesel from Swietenia Macrophylla Seeds[ ]


Increasing demand of conventional source of fuel makes people more conscious about fuel consumption. To make up the crisis of fuel, they start to search alternative source of fuel so that those source can substitute the present energy demand by some percentage. From this prospect in this study, we were carried out an experiment using some operating variables to determine the potential of Swietenia macrophylla for bio-oil production and the eventual making of liquid biodiesel products.

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Symbolism Mirroring in Gloria Naylor's Linden Hills[ ]


Gloria Naylor ranks among writers like William Faulkner who popularized social issues including slavery that many American writers may not prefer to talk about. Naylor was very unapologetic in writing about racial and class discrimination, gender issues, sexuality and urbanization. Through her characters she showed how a black person could recreate real life images and stories. She utilized the redemptive power of language by revealing humiliation of the blacks. While the whole world mourns her death (September 2016), it would be a tribute to write about her artistic work. No doubt, Gloria Naylor was praised by literary critics for the richness of her language, depth and the variety of her characters. In addition, Naylor bravely took the black community to write for its development and color racism and at times, unhelpful nature of black male and female relationships.

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Corrosion Potential Assessment of Eco-friendly Inhibitors Layered Reinforcement Embedded in Concrete Structures in Severe Medium[ ]


This research work experimentally investigated the use of inorganic inhibitors and Greener approach inhibitors to evaluate the assessment of corrosion potential using Mangifera indica resins paste extracts layered to reinforcing steel with coated thicknesses of 150µm, 250µm and 350µm. Examinations and assessments were done on concrete reinforced slab with the application of half cell potential, concrete resistivity and tensile strength mechanical properties of reinforcement surface condition after 119 days immersion in sodium chloride and with applied currents potential of -200 mV through 1200mV, with a scan rate of 1mV/s.

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Electrochemical Potential Investigation of Inhibited Reinforcement Properties Embedded in Concrete in Accelerated Corrosive Medium[ ]


The level of chloride attacks on reinforced concrete structures built within the coastal region of Niger Delta of Nigeria has been in alarming rate which has resulted to un-numbered rate of structural failures. The study investigated corrosion level probability assessment potential through half cell potential corrosion measurement, concrete resistivity test and tensile strength test mechanical properties of non-corroded, corroded and inhibited reinforcement with Moringa Oleifera lam resin paste of trees extract.

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Evaluation of Mechanical Properties of Inhibited Reinforcing Steel in Accelerated Corrosion Medium and Applied Currents Potential[ ]


This study investigated the effectiveness in utilization of resins extracts of inorganic inhibitor of ficus glumosa in to curb and prevent the action of corrosion using an experimental study of half cell potential, concrete resistivity and tensile strength and evaluated the change in the surface condition of reinforcements mechanical properties of non-inhibited and inhibited specimens embedded in concrete slab in an accelerated corrosive medium of after 119 days immersion in sodium chloride and with applied currents potential of -200 mV through 1200mV, with a scan rate of 1mV/s. Results recorded of non- inhibited concrete specimens on the mapping areas for the expedited periods designated 95% probability of corrosion and indicating a high or moderate probability of corrosion.

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USE OF COPPER SLAG AS CONSTRUCTION MATERIAL IN BITUMENIOUS PAVEMENTS[ ]


Most of the pavements are made up of Hot mix asphalt as this is the most material available and it is also suitable for climate here. However hot mix asphalt pavements normally require frequent maintenance and rehabilitation due to damages caused by excessive traffic loadings. Therefore, one of the alternatives to minimize the damages of pavement and to prolong service life is use of modified asphalt pavements.

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Post HIV Status Disclosure Assessment of Behavioural and Mental Health Patterns among Adolescents and Young People Living with HIV[ ]


In 2015, approximately 2.6 million children <15 years were living with HIV worldwide, nearly 90% of them in sub-Saharan Africa [1] and it was an estimated 28% increase in number of adolescents living with HIV since 2005 [2]. Nigeria had an approximated 41 000 new HIV infections among children in same year [3].

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Simulation and Improved Recovery of Liquified Petroleum Gas from Flare System (Case Study: Niger Delta, Nigeria)[ ]


Liquified Petroleum Gas(LPG) has been a good source of fuel in country of the world because of its environmental friendliness and economic factors. The price of LPG in the global market has increased in the last few years because of increase in the demand for the product as the world continues to seek alternative fuel with less CO2 emission. This research is concerned with the simulation and improved recovery of an LPG plant that produces LPG and valuable by-products like methane, ethane, and natural gasoline, from stranded natural gas stream (that is usually flared at the flare stack in Niger Delta area of Nigeria) using Aspen hysys V8.6.

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Psycho Social Problems of Parents of Special Children[ ]


Child is the most important word to been seen in the society for the future generation and development if they are excluded from the holistic care and development we can imagine what is our country heading to. The word special only tells the significance of the topic as they are special so they need special consideration for everything. They should be taken care but not made paralyzed so that they cannot empower themselves to live a life of their own.

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Mobile Ad-Hoc Networks: An Overview[ ]


Mobile Ad-hoc Network (MANET) is a collection of mobile nodes that is formed without the support of any existing network infrastructure. It is a self-configurable network where nodes connect and disconnect from the other nodes in the network automatically at any point in time. The characteristics of MANETs such as flexibility, distributed operation, node to node connectivity make it vulnerable to various security attacks such as wormhole attacks, grey-hole attacks, black-hole attacks and so on. This paper presents an overview of the characteristics, applications, challenges, security goals, limitations, routing protocols and security attacks of MANETs.

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Geochemical Analysis and Origin of Organic Matter in Coal of Barapukuria Coal Mine, Bangladesh[ ]


The country’s fuel energy efficiency is as prosperous as the country’s prosperity. At present, country’s development depends on their fuel energy efficiency. Bangladesh will going downwards day by day without fuel energy. In Bangladesh, some of the fuel energy comes from coal. Barapukuria coals in Bangladesh are one kind source of fuel energy in our country. To properly use of these coal, we should know the rank of coal. But to know the rank as quality of coal, coal is geochemical analyzed where total carbon (TC), total hydrogen (TH), total sulfur (TS) and total nitrogen (TN) concentrations are found. It’s were measured by combustion method 1150oC in an CHNS elemental analyzer after removal of carbonates with HCl.

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Investigation of Corrosion Potential Probability and Concrete Resistivity of Inhibited Reinforcement Chloride threshold in Corrosive Environment[ ]


This study investigated the effects of chloride attack on reinforcing steel embedded in reinforced concrete structures built in the marine environment. An experimental work simulated the quick process by acceleration process on non-inhibited and inhibited reinforcement of acardium occidentale l. resins extracts with polished thicknesses of 150µm, 250µm and 350µm, embedded in concrete slab and immersed in sodium chloride (NaCl) and accelerated for 119 days using Wenner four probes method; it was done by placing the four probes in contact with the concrete directly above the reinforcing steel bar and assessed the actions of half cell potential, concrete resistivity and tensile strength of reinforcement to corrosion.

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Investigation of Corrosion Probability Assessment and Concrete Resistivity of Steel Inhibited Reinforcement of Reinforced Concrete Structures on Severe Condition[ ]


Corrosion of steel reinforcement has become a key hitch in the construction industry, and the prediction of service life of reinforced concrete structures calls for concern. The research work investigated the corrosion potential, concrete resistivity and tensile tests of non-corroded, corroded and coated reinforcing steel of concrete slab member. Direct application of corrosion inhibitor of dacryodes edulis resins thicknesses 150µm, 250µm, 350µm were coated on 12mm diameter reinforcement, embedded into concrete slab and exposed to severe corrosive environment for 119 days for accelerated corrosion test, half-cell potential measurements, concrete resistivity measurement and tensile tests .

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Investigation on Mechanism of Steel Bar Corrosion of Reinforced Concrete Structures in Aqueous Solution Using Wenner Technique[ ]


This experimented work investigated the electrochemical processed that led to the electron transfer in corrosion process of steel reinforcement in the harsh marine environment with high level of chloride. Corrosion test was conducted on high tensile reinforcing steel bar of 12mm, specimens rough surface were treated with Symphonia globulifera linn resin extracts with layered thickness of 150µm, 250µm and 350µm polished and embedded into concrete slab.

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Slope Stability Assessment of Awba Earth Embankment Using Analytical Methods[ ]


Slope stability condition analysis is very important before, during and after construction especially in places like Nigeria where larger number of the dams fall under earthfill dam. Earlier studies revealed that Awba dam is having seepage problem, hence, there is need to carry out slope stability analysis so as to curb the dam failure. Samples were collected at Upstream Right Side (URS) Upstream Middle (UM) and Upstream Left Side (ULS) at 2.0, 55.0 and 105.0 m away from spillway respectively.

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REDUCING COGNITIVE LOAD THROUGH COMPUTER BASED MULTIMEDIA INSTRUCTIONS[ ]


This study investigated the impact of multimedia presentations in the reduction of cognitive load imposed on students working memory in the process of learning. Two multimedia instructional packages were designed for the purpose of the study. The moderating effect of gender was investigated. The study adopted the pretest – posttest, control group, quasi experimental research design.

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Effect of the Dose and Frequency of IPM Lab Biopesticide on Collar Rot Incidence and Growth of the Indian Spinach[ ]


The effectiveness of integrated pest management (IPM) Lab biopesticide (Trichoderma based) in reducing collar rot disease and growth parameters of Indian spinach was studied. Five different levels of biopesticide (0, 10, 15, 20 and 25 g/m2 of soil) at two frequencies were applied in the soil. Biopesticide was first mixed up with top soil during final land preparation and then one month after transplanting with rhizosphere soil of the plants. Results showed that increasing biopesticide level up to 25g/m2 and its repeated application reduced collar rot disease incidence and increased growth parameters. Plant height, number of leaves and plant weight were markedly influenced by application of the biopesticide. Highest percent plant infection and lower growth were observed in the untreated plots. The highest dose (25g/m2) of biopesticide used in the experiment supported significantly better growth and lower collar rot disease incidence. Thus, the experimental results have opened up a possibility of using Trichoderma based IPM Lab biopesticide over conventional farming inputs for sustainable and organic production of agro products vegetables.

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Design and Fabrication of Bambara Groundnut (Vigna subterranea (L) Verdc) Combined Sorter, Sheller and Cleaning Machine [ ]


Postharvest processing of agricultural materials like Bambara Groundnut (BGN) is highly essential for its storability and consumption by humans. Machines need to be designed and fabricated to achieve this purpose. Consequently, some engineering properties of BGN relevant to its sorting, shelling and cleaning were determined.

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