Adama University

About: Adama University is a education organization based out in Nazrēt, Ethiopia. It is known for research contribution in the topics: Population & Adsorption. The organization has 840 authors who have published 1010 publications receiving 5547 citations. The organization is also known as: Adama Science and Technology University & ቴክኖሎጂ ዩኒቨርሲቲ, አዳማ ሳይንስና ቴክኖሎጂ ዩኒቨርሲቲ.

Design and implementation of video steganography using Modified CNN algorithm

Abstract: The expanded popularity of computerized media has raised genuine worries over its security related issues Security attacks through listening in, disguising and altering and in numerous different structures is normal these days The field of computerized steganography fixates on hiding data in advanced record designs While the use of steganographic strategies comparable to image and sound documents has been broadly inquired about, examination into the utilization of other holder less stays constrained The point of this undertaking is to investigate various techniques for safely encoding messages in a mixed media holder, using both the sound and video stream, and utilizing stegoanalysis to decide their adequacy In this paper, structure a modified CNN-based stegoanalyzer for images got by applying steganography with a one of a kind inserting key The proposed design implants less convolutions, with a lot bigger channels in the last convolutional layer, and is increasingly broad, it can manage bigger image and lower payloads

Design and Analysis of Sedan Car B-Pillar Outer Panel Using Abirbara with S-Glass Fiber Hybrid Composites

Abstract: Automotive industries are struggling hard to optimize vehicle body through different ways; like shape for its aerodynamics and aesthetics, weight of materials to be used for fuel efficiency, material conservation, recyclability, and others. The century’s competitive material in the industry is composite material especially natural composites are preferably based on different perspectives. As B-pillar is one of the critical structural support members of sedan cars, different considerations are taken to analyze and replace its outer panel with natural Nettle fiber composite. Mainly it should overcome two things; B-pillar must overcome the stress developed due to the system as it is a structural member and safeguard the occupant in the case of side crash. Considering these properties of the B-pillar, a natural fiber called Abirbara/Aleblabit/Ethiopian origin stinging nettle with S-glass hybrid composite was used to replace its outer panel with Ansys analysis. It is observed that Abirbara fiber, which can be extracted from the Abirbara plant is abundantly available in Ethiopia and is not yet used widely as composite materials. This work started with plant harvesting (collecting) and fiber extraction, which was performed through mechanical methods. The composites were prepared using chemically treated fiber with different orientations based on predetermined performance. Different mechanical properties were measured by using UTM machines and its tensile strength, compression strength, bending strength values are 153.166 MPa, 212.7 MPa, and 370 N peak load, respectively, whereas water absorption is 1.6% in 48 h. The model of the sedan car B-pillar panel was prepared by SpaceClaim software and analyzed for impact using Ansys software. Crush simulation of B-pillar panel with conventional material and composite material was computed. So the Ansys analysis shows that the energy absorption of EOSN fiber composite B-pillar panel is 2.61 and 0.15925 kJ for conventional materials. It is concluded that Abirbara composite can be used for B-pillar outer panel, which results in reduction of weight of the vehicle, fuel consumption, and an increase in energy absorption.

Overall performance evaluation of an urban water supply system: a case study of Debre Tabor Town in Ethiopia

Abstract: Abstract Urban water utilities in Ethiopia, including Debre Tabor Town, commonly suffer from an intermittent water supply, water quality issues, poor service delivery, and other problems. Thus, the main focus of this study was to evaluate the actual performance level of the water supply system of the town based on hydraulic efficiency, quality, cost recovery and customer satisfaction. The water distribution system status was measured by using reliability, resilience, and vulnerability as performance indicators. Weightage Arithmetic Water Quality Index (WAWQI) and household-based questionnaires were used to evaluate the water quality and customer satisfaction, respectively. Pressure and velocity-based sustainability index of 0.614 and 0.132 showed acceptable and unacceptable water supply status, respectively, and overall moderate sustainability. Results of the WAWQI revealed that more than half of the sampled tap waters were either poor or unfit for drinking purposes. The comparison of income collected from customers and the water production costs of the utility showed that only 34.31% of production cost is covered by customers. Generally, 62.6% of the society confirmed that they are unsatisfied with the existing water supply system. Thus, to improve the performance, it is recommended to address all the major social, economic, environmental and technical problems.

An appraisal of availability of human and material resources for teaching and learning office technology and management courses in polytechnics in adamawa state, nigeria

Abstract: The purpose of this study was to examine the availability of human and material resources for teaching and learning Office Technology and Management courses in polytechnics in Adamawa State. The study had two specific purposes from where two research questions were r aised and two null hypotheses were formulated and tested. The design of the study was descriptive survey design. The population of the study was 57 lecturers and 363 students which were drawn from Federal Polytechnic Mubi and State Polytechnic, Yola in Ada mawa State. A simple random sampling technique was used to determine the sample of 201 lecturers and students for the study. A structured questionnaire of 35 items was used to collect data and the data collected were analyzed using means and standard devia tion to answer the research questions, the hypotheses were tested using t - test analysis at 0.05 level of significance. The major findings of the study among others there were very low human and material resources used in teaching and learning OTM Courses i n both Federal and State polytechnics in Adamawa State. It was concluded that required human and material resources for teaching and learning office technology and management courses are not adequately available, and where they are available, they are unde r - utilized, while the available human resource are over - utilized. The researchers recommended that the government and management of Polytechnics should ensure that they make available adequate number of qualified human resources for both academic and non - a cademic staff. This can be achieved through adequate budgetary allocation for the provision of material resources.

On some common fixed point theorems with rational expressions over closed subset of a Hilbert space

Abstract: This article provides the existence and uniqueness of a common fixed point for a pair of self mappings, positive integer’s powers of a pair of self mapping and a sequence of self mappings over a closed subset of a Hilbert space satisfying various conditions involving rational expressions.