Postgraduate Project Topics, Thesis and Dissertation
18301. Tiling Of The Plane
This project discribes the concept and properties of tiling of the plane with regu-rnlar polygones. The regular tilings that is a monohedral tilings whose tiles is regularrnpolygones and semi regular tilings that uses a mix of regular polygons with di_erentrnnumbers of sides but in which all vertex...
18302. Stable Marriage Problem
The stable marriage problem is a well-known problem of matching women to men to achieve arncertain type of "stability". Each person expresses a strict preference ordering over the members ofrnthe opposite sex. The goal is to match women and men so that there are no two people of oppositernsex who...
18303. Euler-lagrange Equations For Fractional Variational Problems
This thesis introduces three new operators and presents some of theirrnproperties. It defines a new class of variational problems in terms of thesernoperators and derives Euler-Lagrange equations for this class of problems. Itrnis demonstrated that the left and the right fractional...
18304. Effects Of Carbon Content In Ferrite And Martensite On Lattice Parameter And Its Diffusion Process (computer Simulation)
Molecular dynamics and molecular static simulation has been performed to investigaternthe structural transition of martensite and the diffusion properties of single carbon atomrnin the bulk of ferrite. For both types of simulations embedded atom potential was appliedrnto describe atomic...
18305. Role Of Surface Chemistry In Modifying The Optical Properties Of Silicon Nanostructure
We combine two model used earlier. We vary the fitting parameters C and α (which depend on surface, geometry, confinement, size, porosity and materials properties). We use surface energy (Es = 0.05eV), binding energy (Eb = 0.07eV), C, and α using these as input we generate Eg and PL intensity...
18306. Hivsti Behavioral Survey Among Male And Female Students In Axum University A Comparative Study Axum Town Tigray Northern Ethiopia
Introduction: Efforts to reduce the spread and impact of HIV/AIDS are very much related tornchanging high-risk sexual behaviors and environments facilitating high risk sexual behaviors.rnThis can be done successfully if these efforts are supported by relevant studies that aimed atrnanalysis of...
18307. Investigations Of Electronic Structure Of Bare And Passivated Nanocrystalline Silicon Clusters And Their Transport Properties
Silicon low dimensional structures are found to be extremely stable in comparison to bulkrnsilicon along with variety of interesting electronic properties. They are established as potentialrncandidates for various promising applications in advanced nano-electronics devices especiallyrnin a...
18308. Magnitude Of Risky Sexual Behavior Associated Factors And Parenting Practices Among Unmarried Youth Students In Kea Med University College Addis Ababa Ethiopia
Background: Youth is characterized by emotional, social and physical transformations that canrnexpose young people to risky sexual behaviorsand healthy sexuality needs an investment fromrnparents. Risky sexual behavior among youth is still a major issue in Sub-Saharan Africarnincluding Ethiopia....
18309. Simulation Of Three-layer Solid State Memcapacitor
Memcapacitors are capacitors whose capacitance depends on the past states throughrnwhich the system has evolved. The focus of this thesis is on the possible realization ofrna three-layer solid-state memory capacitive (memcapacitive) system. The functioning ofrnthis device is based on the slow...
18310. Consistent Condom Use And Associated Factors Among People Living With Hiv Aids Who Are On Art In Hosanna Town Ethiopia
Background: The advent of antiretroviral treatment has contributed a lot in decline of HIV AIDSrnrelated morbidity and mortality. While ART enables people living with HIV to regain their sexualrncapability, new challenges to prevent HIV transmission to sero discordant partner and reinfectionrnwith...
18311. Study The Effect Of Ultraviolet Radiation On Polycrystalline Silicon Solar Cell
The effect of ultraviolet(UV)radiation on polycrystalline silicon solar cell was studied.rnThe reflectance spectrum, performance parameter and external quantum efficiencyrnwas analyzed by varying exposure time for different fluence of UV radiation.rnReflectance spectrum showed increase for 10...
18312. Investigation Of Damping Effects On Power Loss In An Optical Fiber Due To Higher Order Nonlinear Term
Many properties of optical fibers namely power loss, noise, distortion, attenuation,rnabsorption, damping etc are guided by nonlinearities. They must be checked andrncalculated their effects before put into applications. We used a developed an-harmonicrnoscillator model (by Sunita Sharma, S. K....
18313. First Principle Determination Of Electronic Structures Of Bimno3 Using Hubbard U Correction
In this research work the electronic structure properties and lattice instability of BiMnO3 arernexamined by employing first principle DFT based techniques. First we perform arnpseudopotential calculation using general gradient approximation without Hubbard U. Therncalculations are further extended...
18314. Assessment Of Status Of Commercial Sex In Females Selling Local Beverage Their Risk Perception Towards Hiv Infection And Condom Use In Towns Of Gojjam
Background (problem statement): - Selling local beverages like Araki, Teji and Tella byrnfemales is of back long and widely practiced activity in Ethiopia in general and in most townsrnof Gojjam in particular. And some of these females are practicing commercial sex with theirrnbeverage customers...
18315. Investigation Of Calcite And Volcanic Ash For Their Utilizations As Cement Filling And Additive Materials
The purpose of this study is to use calcite and volcanic soil as cement filling and additivernmaterials in order to maximize cement productions in Ethiopia. In this study therncharacteristics of calcite and volcanic soil, suitable mix design of OPC raw materials,rnsources of calcite, chemical...
18316. First Principle Simulation For Electronic Structures And Transport Properties Of Edge Doped Graphene Nanostructures For Applications In Glucose Sensors
Glucose as adsorbed species on edges of the graphene nanostructures are found torncreate some significant variations among the nanostructure’s electronic properties andrnthe changes are fruitfully tapped for futuristic nano-sensing applications. The presentrnstudy is focused on ab-initio...
18317. Experimental Technique To Characterize Macrobending Loss In Single Mode Fiber
An experimental technique of macrobending losses for a single mode fiber (SMF) withrndifferent radius of curvature is presented. Macrobending losses for SMF are investigatedrnexperimentally, showing that a tight bent of fiber has a significant impact on the powerrnloss. This experimental...
18318. Abinitio Calculations Of Structural And Electronic Properties Of A Bexzn1-xse Ternary Alloy
We have used the ab-initio SIESTA code within the framework of DFT, LDA methodrnto calculate the structural and electronic properties of BexZn1-xSe alloy for differentrncompositions x = 0.0, 0.33, 0.66, and 1.0. The system is modelled in various possiblernconfigurations using a large 54-atom...
18319. Natural Dye Senistized Photoelectrochemical Cells Based On Zno Nanoparticles
This thesis focused on the study of dye-sensitized solar cells (DSSCs) based on ZnOrnnanoparticle. Our work started by synthesizing ZnO nanopartcile using sol-gel method.rnZnO nanoparticles were synthesized and the size of the nanoparticle (1.14 nm) was determinedrnby using effective mass...
18320. Model Computation Of Water Clustering (h2o) N Effect In The Negative Ion Proton Transfer Reactions
We report the effect of water clustering (H2O) n in the negative ion proton transfer reactions on reaction rate constants and the change in the Gibbs free energy of the corresponding reactions. Reaction rate constant of the reaction between the new proposed reagent acetate ion CH3COO- than the...
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