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776
776. DEVELOPMENT OF AN ETHNOSCIENCE DATABASE AND ITS IMPACTS ON STUDENTS LEARNING OUTCOMES IN BASIC SCIENCE IN SOUTHWESTERN NIGERIA

1.1Background to the Problem

Science serves as a veritable tool for the sustainable growth and development of a nation. Indeed the strength of a nation and the respect she commands from other nations are functions of her level of scientific and technological development. Science and Mathematics are the keys to innovation and power in today‟s world (Friedman, 2005). However, the increasing complexity of the world today imposes new and changing workforce requirements. This means that...

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777. DEVELOPMENT OF A VIDEO FRAME ENHANCEMENT TECHNIQUE BASED ON PIXEL INTENSITY AND HISTOGRAM DISTRIBUTION FOR IMPROVED COMPRESSION

ABSTRACT

Research attention has been focussed on the reduction of image data size (major problem) for its efficient compression, storage, and transmission. In this work, the developed brightness enhancement model was used to enhance the Discrete Cosine Transform (DCT), Discrete Wavelet Transform (DWT), Lifting Wavelet Transform (LWT), and Firefly Optimization Algorithm (FOA) compression, which were then used to compress the six video data. These video samples were obtained from the...

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778. DEVELOPMENT OF AN IMPROVED KEYFRAME EXTRACTION SCHEME FOR VIDEO SUMMARIZATION BASED ON HISTOGRAM DIFFERENCE AND K-MEANS CLUSTERING

ABSTRACT

The rate of increase in multimedia data necessitated the need for a large number of storage devices. Nonetheless, the stored multimedia data has a lot of redundant video frames. These redundant frames make video browsing and retrieval difficult as well as time-consuming for the user; hence, negatively affecting bandwidth utilization and storage capacity. In order to improve the bandwidth utilization and storage capacity, keyframe extraction algorithms were developed. These...

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779. DEVELOPMENT OF AN IMPROVED MULTI-HOP ROUTING PROTOCOL IN WIRELESS SENSOR NETWORKS BASED ON CLUSTER HEAD LOAD BALANCING TECHNIQUE

ABSTRACT

Energy conservation in wireless sensor networks (WSNs) is a key area of research aimed at addressing the challenge of efficient energy utilization. This is due to the fact that the Sensor Nodes (SNs) have limited energy. The limited energy has to be utilized efficiently in order to provide longer network lifetime for the wireless sensor network (WSN). To reduce energy consumption in WSNs, an improved multi-hop routing protocol (mEEMRP) in WSNs based on cluster head (CH) loa...

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780. DEVELOPMENT OF AN IMPROVED ALGORITHM FOR POWER LINE DETECTION IN OPTICAL IMAGES USING FRANGI FILTER AND FIRST ORDER DERIVATIVE OF GAUSSIAN

ABSTRACT

This research presents the development of a Frangi filter and first-order derivative of Gaussian (FF-FDOG) based power line detection (PLD) algorithm as an improvement to the standard PLD algorithm. Vision-based PLD is important in obstacle avoidance in low-altitude flight and also in the surveillance and maintenance of electrical infrastructure. The need for high and real-time detection rates as well as low false alarm in noisy and cluttered images makes it a challenging t...

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781. DEVELOPMENT OF AN ENHANCED ACTIVE POWER CONTROL TECHNIQUE FOR INTERFERENCE MITIGATION IN MACRO-FEMTO CELLULAR NETWORKS

ABSTRACT

Femtocells are overlayed on existing Macrocells to form Macro-Femto heterogeneous network (HetNet), to reduce cost of mounting expensive macrocell nodes, improve cellular network capacity and throughput performance. However, HetNet has a major problem of cross-tier and co-tier interference, which hinders its optimal performance, especially when the network capacity expands. With emergence of 5G technologies, interference would become more consequential. Therefore, curbing t...

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782. DEVELOPMENT OF A WIRELESS SENSOR NETWORK(WSN) BASED MULTI – NETWORK CATTLE MONITORING SYSTEM.

ABSTRACT

This study shows how to monitor the movement of cattle using wireless sensor nodes powered by a renewable energy source capable of detecting location, and incorporated in it all the available mobile networks to ensure that information about cattle location gets to the base in real-time. Performance analysis was carried out on the energy consumption pattern of the nodes which indicated that throughout the monitoring period, the average energy consumed by the nodes was thus;...

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783. DEVELOPMENT OF AN IMPROVED FORCED ISLAND AND LOAD SHEDDING SCHEME TO PREVENT SYSTEM COLLAPSE

ABSTRACT

This research work presents a scheme that identifies line outage and generator outage using contigency analysis and effectively splits the network into a set of predefined islands, with a load shedding strategy to minimise the adverse effect of each outage and to ensure system security. In this research work, Newton Raphson power flow was used for the power flow analysis of the network. Also, Active Power Loading Perfomance Index was used during the contigency analysis to r...

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784. DEVELOPMENT OF A STATE ESTIMATION BASED IMPROVED DETECTION AND LOCALIZATION OF NON-TECHNICAL LOSSES USING SMART METER MEASUREMENTS

ABSTRACT

This research work presents the development of branch current based state estimation for Non- Technical Losses (NTLs) Detection and Localization. The use of weighted least square (WLS) state estimation for the evaluation of branch current of a network during theft is considered. In order to confirm the presence of theft in a network, current measurement value obtained from Distribution Transformer Controller (DTC) installed at substation was compared with that of all custom...

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785. DEVELOPMENT OF A SMELL AGENT OPTIMIZATION ALGORITHM FOR COMBINATORIAL OPTIMIZATION PROBLEMS

ABSTRACT

This thesis presents the development of smell agent optimization (SAO) algorithm. The developed algorithm consists of three modes (sniffing, trailing and random modes). The evaporation of smell molecules from the smell source is modelled into sniffing mode using the concept of the hydrostatic pressure of gas and positions of molecules. The fitness of the sniffing mode is evaluated and the molecule with the most favourable fitness is taken as the agent. The olfaction capacit...

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786. DEVELOPMENT OF A ROBUST DIGITAL IMAGE WATERMARKING TECHNIQUE IN DISCRETE ORTHONORMAL STOCKWELL TRANSFORM DOMAIN BASED ON PHOTON POLARIZATION

ABSTRACT

This thesis presents the development of novel digital image watermarking technique for the shielding of intellectual property rights of digital images. Because of their digital nature, multimedia data can be duplicated, modified, and transformed. In this context, it is essential to develop a watermarking –based technique for copyright protection and authentication of digital images. The major problem of watermarking technique is how to achieve an optimal- tradeoff bet...

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787. DEVELOPMENT OF A MORE SECURED BANKING TRANSACTION AUTHENTICATION APPLICATION

ABSTRACT

Over the years, the issue of banking fraud has become a very huge problem in the banking system of today. The percentage of banking fraud has risen greatly day-by-day by the cyber criminals coming up with different strategies such as cloning SMS and hacking into the database of unencrypted banking system. The major aim of the project is to great a more secured banking system for username to use flexibly without an thought of been hacked at an point. In this case AES(Advance...

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788. DEVELOPMENT OF A SHUNT ACTIVE POWER FILTER FOR HARMONIC REDUCTION USING SYNCHRONOUS REFERENCE FRAME WITH SPACE VECTOR PULSE WIDTH MODULATION

ABSTRACT

This work aimed at designing and implementation of Shunt Active Power Filter (SAPF) for power quality improvement through harmonic reduction. The current harmonics are being caused by nonlinear characteristic of power electronics based equipments which increase power losses and in turn reduce power quality. This work employed a three phase three wire shunt active power filter implemented by simulation in MATLAB/Simulink for harmonic reduction. Synchronous Reference Frame (S...

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789. DEVELOPMENT OF A SENSITIVITY INDEX BASED TECHNIQUE FOR UNIFIED POWER FLOW CONTROLLER PLACEMENT WITH CONTINGENCY ANALYSIS ON NIGERIA 330kV TRANSMISSION NETWORK

ABSTRACT

Power system network is designed to operate in a prescribed voltage and frequency for stability and for better power quality. Unexpected contingencies leads to instability related problems in the system. This research develops a sensitivity index based technique with contingency analysis for Unified Power Flow Controller (UPFC) placement for Nigeria 330kV power transmission system. The research employed Newton Raphson power flow method considering multiple contingency analy...

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790. DEVELOPMENT OF A PRIVACY AIDED TRUST ROUTING ALGORITHM BASED ON SOCIAL SIMILARITY IN OPPORTUNISTIC NETWORK

ABSTRACT

This research work presents the development of a privacy aided trust routing model using social similarity in an Opportunistic Network (OppNet). OppNet is a delay tolerant network where link is highly unpredictable. It is an ideal solution in situations where the deployment of wired and conventional wireless networks is difficult or practically impossible. However, OppNet is faced with several challenges. Most of these challenges are related to routing, buffer management or...

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791. DEVELOPMENT OF A ROBUST DIGITAL IMAGE WATERMARKING TECHNIQUE IN DISCRETE ORTHONORMAL STOCKWELL TRANSFORM DOMAIN BASED ON PHOTON POLARIZATION

ABSTRACT

This thesis presents the development of novel digital image watermarking technique for the shielding of intellectual property rights of digital images. Because of their digital nature, multimedia data can be duplicated, modified, and transformed. In this context, it is essential to develop a watermarking –based technique for copyright protection and authentication of digital images. The major problem of watermarking technique is how to achieve an optimal- tradeoff bet...

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792. DEVELOPMENT OF A MOTIVATIONAL MODEL OF REGRESSION FOR IMPROVED PRODUCTIVITY OF SELECTED BUILDING TRADESMEN IN THE SOUTH EASTER STATES OF NIGERIA

1.1Background to the Study

Every organization is concerned with what should be done to achieve sustained high levels of performance through its workforce. This means giving close attention to how individuals can best be motivated through such means as incentives, rewards, leadership, and the organizational context within which they carry out the work (Amstrong, 2006). With positive motivation philosophy and practice in place, productivity, quality and service should improve because...

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793. DEVELOPMENT OF A PILOT ALLOCATION PROTOCOL TO MITIGATE THE EFFECT OF PILOT CONTAMINATION IN MASSIVE MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM

ABSTRACT

Pilot Contamination (PC) has been considered as a majorlimiting factor of Time Division Duplexing (TDD) Massive Multiple-Input Multiple-Output (M-MIMO) systems, as itsaturates the signal to interference plus noise ratio (SINR) saturated. Similarly, several mitigation techniques such as Eigenvalue decomposition, cooperative Bayesian channel estimation, blind equalization technique, time staggering pilot, smart pilot assignment, etc. proposed in literature to address PC issue...

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794. DEVELOPMENT OF A MODIFIED ARTIFICIAL FISH SWARM ALGORITHM- PARTIAL TRANSMIT SEQUENCE TECHNIQUE FOR PEAK TO AVERAGE POWER RATIO REDUCTION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING

ABSTRACT

Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier frequency multiplexing scheme used in broadband wireless communication systems and has advantages such as high spectral efficiency, simple channel equalization and flexibility.One of its major challenges is the high Peak-to-Average Power Ratio (PAPR) of the signal which can cause a nonlinear signal distortion and reduction in power efficiency. One of the techniques used to reduce PAPR is the Partial Transm...

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795. DEVELOPMENT OF A MODEL FOR EFFECTIVE HOUSING BUDGET PERFORMANCE IN ANAMBRA STATE NIGERIA

1.1Background to the Study

Planning, allocation and utilization of financial resources for projects are crucial decisions for the actualization of corporate objectives in private and public organizations. The budgeting process is employed to integrate these decisions (Shapiro, 2001; Ugwu, 2006; Ekewealor, 2007; Ugoo, 2008, Fort, 2012). In private organizations, the bottom line is profit. However, budgeting in the public sector or government establishments is concerned with enhancing...

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796. DEVELOPMENT OF A LOW COST BRIQUETTE MAKING MACHINE

ABSTRACT

The work focuses on the development of a low cost briquette making machine using Rice husks and Sugarcane baggase as selected materials. The realization that deforestation and wood fuel shortages are likely to become pressing problems in many countries has turned attention to other types of biomass fuel. However, rice husks and sugarcane baggasse residues are often bulky and difficult to burn which lead to this conversion technique developed. In developing this briquetting...

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797. DEVELOPMENT OF A MODEL FOR SUSTAINABLE ENERGY CONSUMPTION OF HEATING VENTILLATION AIR CONDITION INSTALLATIONS OF HOTELS IN OWERRI,IMO STATE NIGERIA

1.1Background to the Study

Buildings contributes a very high energy consumption percentage compared to other economic sectors. Although these percentages vary from country to country, buildings are accounts  for  about  30±45%  of  the  global  energy  demand.  With  increasing  urbanization (higher in developing countries), the number and size of buildings in urban areas will increase, resulting in an increased demand fo...

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798. DEVELOPMENT OF A FUZZY TIME SERIES MODEL USING CAT SWARM OPTIMIZATION CLUSTERING AND OPTIMIZED WEIGHTS OF FUZZY RELATIONS

ABSTRACT

This research developed a hybrid forecasting technique that integrates Cat Swarm Optimization Clustering (CSO-C) and Particle Swarm Optimization (PSO) algorithms with Fuzzy Time Series (FTS) forecasting model. Cat Swarm Optimization Clustering (CSO-C) which is an algorithm for data classification is adopted at the fuzzification stage to objectively partition the universe of discourse into unequal intervals. Then, disambiguated fuzzy relationships are obtained using Fuzzy Se...

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799. DEVELOPMENT OF A MODIFIED ENERGY-EFFICIENT CLUSTERING WITH SPLITTING AND MERGING FOR WIRELESS SENSOR NETWORKS USING CLUSTER-HEAD HANDOVER MECHANISM

ABSTRACT

Energy efficiency is one of the most important challenges for Wireless Sensor Networks (WSNs). This is due to the fact that sensor nodes have limited energy capacity. Therefore, the energy of sensor nodes has to be efficiently managed to provide longer lifetime for the network. To reduce energy consumption in WSNs, a Modified Energy Efficient Clustering with Splitting and Merging (������������������) for WSNs using Cluster-Head Handover Mechanism was implemented in this res...

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800. DEVELOPMENT OF A MODIFIED REAL-TIME FAULT-TOLERANT TASK ALLOCATION SCHEME FOR WIRELESS SENSOR NETWORKS

ABSTRACT

This research aimed at the development of a modified real-time fault-tolerant task allocation scheme (mRFTAS) for wireless sensor networks (WSNs), using active replication backup techniques. In WSNs, the sensor nodes are at risk of failure and malicious attacks (selective forwarding) and this can have a profoundly negative effect on real-time WSNs. The real-time fault-tolerant task allocation scheme (RFTAS) was developed to address these issues, however, it has the problem...

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