Research & Development

Volume 4, Issue 1, March 2023

  • Relationships Between Concrete Tester (CTS02v4) and Ultrasonic Pulse Velocity in Determining Quality of Concrete; a Case Study of Atimbo Bridge in Nigeria

    Rowland Adewumi, Olushola Charles Adeniyi, Garba Ahmad Ali

    Issue: Volume 4, Issue 1, March 2023
    Pages: 1-5
    Received: 28 November 2022
    Accepted: 19 December 2022
    Published: 13 January 2023
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    Abstract: The research examines the relationship between the use of a concrete tester (CTS02v4) and ultrasonic pulse velocity (UPV) based on the strength characteristics of the Atimbo bridge in the cross-river state of Nigeria. The best fit approach for the cts02v4-UPV relationship under various circumstances is developed by carefully analyzing the correlati... Show More
  • Large Scale Demonstration of Irrigated Wheat Production Technologies in Bedeno District of Eastern Hararghe Zone, Oromia National Regional State, Ethiopia

    Oromia Megersa, Fekadu Tadesse, Lalisa Ofga, Zeleke Legesse, Hussein Abro

    Issue: Volume 4, Issue 1, March 2023
    Pages: 6-12
    Received: 20 December 2022
    Accepted: 7 February 2023
    Published: 21 February 2023
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    Abstract: Increasing wheat production and productivity depends on the use of improved technologies as well as producing during rainy and offseason using irrigation. The aim of this study is to promote improved varieties of wheat under irrigation in the study area. The activity was conducted at Hara Deneba kebele of Bedeno district. Farmers were selected base... Show More
  • Macroeconomic Determinants of Inflation in Ethiopia: A Time Series Analysis

    Gemechu Mulatu Kerorsa

    Issue: Volume 4, Issue 1, March 2023
    Pages: 13-19
    Received: 28 October 2022
    Accepted: 22 November 2022
    Published: 27 February 2023
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    Abstract: In the last decades, Ethiopia has been one of the fastest growing non-oil producing countries in the world. Along with the economic growth, inflation has been rising. Therefore, the main objective of this study was to identify the major macroeconomic factors affecting inflation in Ethiopia for the year 1981 - 2020. Secondary data were collected fro... Show More
  • An Overview of Implications and Suggestions for Reducing Temperature Rise in Buildings Located in the Tropics

    Charles Munonye, Oluchi Ifebi, Nkechi Maduka, Michael Ngobili

    Issue: Volume 4, Issue 1, March 2023
    Pages: 20-26
    Received: 23 January 2023
    Accepted: 17 February 2023
    Published: 27 February 2023
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    Abstract: Climate models predict that greenhouse gas warming will cause temperatures to rise faster in the coming years with a serious impact on people living in the tropics. The building sector is acknowledged as one of the highest contributors to greenhouse gas emissions, and poorly designed buildings are not capable of proving thermal comfort to building ... Show More
  • Comparative Analysis of Comfort Temperature of School Children and Their Teachers

    Charles Munonye, Michael Ngobili, Chukwunonso Umeora, Ifebi Oluchi, Nkechi Maduka, Chijioke Onwuzuligbo

    Issue: Volume 4, Issue 1, March 2023
    Pages: 27-39
    Received: 23 January 2023
    Accepted: 20 February 2023
    Published: 15 March 2023
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    Abstract: Thermal comfort in learning environments influences the student’s focus and learning productivity. This study aims to evaluate and compare the adaptive thermal comfort of schoolchildren and their teachers in naturally ventilated primary schools in some selected cities in Imo State Nigeria. To achieve these objectives, the study analyzed the data co... Show More
  • Avocado Nursery as Business Source: Success Story of Youth Groups in the Case of Aleta Wondo and Soro Districts, Ethiopia

    Wasihun Alemnew Worku

    Issue: Volume 4, Issue 1, March 2023
    Pages: 40-43
    Received: 9 December 2022
    Accepted: 23 February 2023
    Published: 20 March 2023
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    Abstract: Agriculture is available and essential sector to create employment opportunity. The majority of the youth in Ethiopia live in rural areas where farming has been traditionally the main source of livelihood. Strengthening of seedling production was initiated to promote Avocado in Ethiopia. Youths in these areas benefitted in terms of income source an... Show More