Prof. Joshua Ayarkwa

Professor

Dept: Construction Technology and Management
Room 308
2nd Floor, Architecture Block
Faculty of Built Environment
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Research Areas/Interests

Sustainable Construction; Lean Construction; Construction Education; Building Materials and Properties; Timber Utilization in Construction; Timber Joi...~more

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Publications

     

    Books

    1. Adjarko, H., Ayarkwa, J. and Agyekum, K. (2016), Incorporating Environmental Sustainability Issues into Construction. LAP Lambert Academic Publishing, 136 p. ISBN-10: 3659854798 ISBN-13: 978-3-659-85479-8.
    2. Agyekum, K., Ayarkwa, J. and Adinyira, E (2012), Minimizing Materials Wastage at the Construction Stage of a Project: A Lean Construction Approach. Lambert Academic Publishing. ISBN-10: 3659158941, ISBN-13: 978-3659158940. 208p.
    3. Ayarkwa, J. and A.K. Danso (2011), Strength of Materials. Classic Graphics Print, Kumasi. ISBN: 2-934872-29-9
    4. Ayarkwa, J. (2009), Timber Construction Technology for Technical, Polytechnic and University Students. Classic Graphics Print, Kumasi. ISBN: 4526944710028
    5. Ayarkwa, J. (2009), Timber Technology for Researchers, Polytechnics and University Students. Classic Graphics Print, Kumasi. ISBN: 4526944710028

    Chapters in Books

    1. Ayarkwa, J. (2012) Antrocaryon micraster. In: Louppe, D., Oteng-Amoako, A.A. & Brink, M.Editors. Plant Resources of Tropical Africa Databank for Commodity Group 2. Timbers 2. PROTA Foundation / Backhuys Publishers / CTA, Wageningen, Netherlands.
    2. Ayarkwa, J. (2012) Daniellia oblonga. In: Louppe, D., Oteng-Amoako, A.A. & Brink, M.Editors. Plant Resources of Tropical Africa Databank for Commodity Group 2. Timbers 2. PROTA Foundation / Backhuys Publishers / CTA, Wageningen, Netherlands.
    3. Ayarkwa, J. and Owusu, F.W. (2008) Cylicodiscus gabunensis Harms. In: Louppe, D., OtengAmoako, A.A. & Brink, M. Editors. Plant Resources of Tropical Africa 7(1). Timbers 1. PROTA Foundation / Backhuys Publishers / CTA, Wageningen, Netherlands. 179-181.
    4. Agyeman, V.K., Ayarkwa, J. Owusu, F.W., Boakye-Dapaah, A.S.K., Addae-Mensah, A., Appiah, S.K., Oteng Amoako A., Adam A.R. and Pattie, D. (2003) Technological and Investment Profiles of some Lesser-used Timbers Species in Ghana. Publication of the ITTO, FORIG, Ghana Forestry Commission. Print Engineering Press. ISBN 9988-7943-0-4

    Refereed Journal Papers

     

    1. Owusu-Manu, D.-G. Ghansah, F.A. Ayarkwa, J. Edwards, D.J. and Hosseini, M. Reza (2021): Factors influencing the decision to adopt Smart Building Technology (SBT) in developing countries, African Journal of Science, Technology, Innovation and Development, DOI: 10.1080/20421338.2021.1899761

    2. Hackman, J. K., Ayarkwa, J., Osei-Asibey, D., Adjei-Kumi, T., & Kissi, E. (2021). Re-examining the Benefits of Decentralization for Infrastructure Delivery at the Metropolitan Municipal and District Assemblies (MMDAs) in Ghana. Advances in SocialSciences Research Journal, 8(2) 382 -397. DOI:10.14738 /assrj.82.9713.

    3. Ghansah, F.A.  Owusu-Manu, D.-G.  Ayarkwa, J. Edwards, D.J. and Hosseini, M. Reza (2021) Exploration of Latent Barriers Inhibiting Project Management Processes in Adopting Smart Building Technologies (SBTs) In the Developing Countries. Construction Innovation. ISSN 1471-4175 https://ww w.emerald.com/insight/1471-4175.htm

    4. Sarfo Mensah, G. Nani and J. Ayarkwa (2021). Contractors’ adaptation to environmentally sustainable construction: a micro-level implementation framework.   Smart and Sustainable Built Environment, Vol. ahead-of-print. DOI 10.1108/SASBE-11-2020-0174

    5. Osei-Asibey, D., Ayarkwa, J., Adinyira, E., Acheampong, A. and Amoah, P. (2021) Roles and Responsibilities of Stakeholders towards Ensuring Health and Safety at Construction Site. Journal of Building Construction and Planning Research, 9, 90-114.

    6. Ankomah, N., E., Ayarkwa J., & Agyekum K. (2020). The Need for Capacity Building of SMES for Lean Construction Adoption: A Literature Review. Proceedings of the 8th International Conference on Innovative Production and Construction (IPC 2020) "Towards Advancement in Technologies and Processes for Smart Buildings and Construction" 7th-8th December 2020, Hong Kong.

    7. Ghansah, F.A., Owusu-Manu, D.-G. & Ayarkwa, J. (2020), Project management processes in the adoption of smart building technologies: a systematic review of constraints, Smart and Sustainable Built Environment, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/SASBE-12-2019-0161

    8. Ghansah, F.A., Owusu-Manu, D.-G., Ayarkwa, J., Darko, A. and Edwards, D.J. (2020), Underlying indicators for measuring smartness of buildings in the construction industry, Smart and Sustainable Built Environment, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/SASBE-05-2020-0061

    9. Ghansah, F.A., Owusu-Manu, D.-G., Ayarkwa, J., Edwards, D.J. and Hosseini, M.R. (2021), Assessing the level of awareness of smart building technologies (SBTs) in the developing countries, Journal of Engineering, Design and Technology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/JEDT-11-2020-0465

    10. Ograh, T. and Ayarkwa, J. (2020) Using Fair-trade to Advance Sustainable Procurement among Small-Scale Farmers in Ghana: Challenges and Prospects – International Journal of Research and Scientific Innovation (IJRSI). Volume VII, Issue IX, September 2020. ISSN 2321–2705.

    11. Ankomah, E.N., Ayarkwa, J. & Agyekum, K. (2020), Status of lean construction implementation among small and medium building contractors (SMBCs) in Ghana, Journal of Engineering, Design and Technology, Vol. 18 No. 6, pp. 1691-1709. https://doi.org/10.1108/JEDT-12-2019-0345

    12. Ayarkwa, J., Agyekum, K., Opoku, D, G, J., Appiagyei, A, A., (2020). Barriers to the implementation of environmentally sustainable procurement in public universities. International Journal of Procurement Management 13 (1), 24-41.

    13. Opoku D.G.J, Agyekum,K  Ayarkwa J(2019). Drivers of environmental sustainability of construction projects: a thematic analysis of verbatim comments from built environment consultants. International Journal of Construction Management, 1-9 DOI: 10.1080/15623599.2019.1678865

    14. Opoku, D. J., Ayarkwa, J. and Agyekum, K. (2019), Barriers to environmental sustainability of construction projects, Smart and Sustainable Built Environment, https://doi.org/10.1108/SASBE-08-2018-0040

    15. Mensah, S., Ayarkwa, J. and Nani, G. (2018). A Theoretical Framework for Conceptualizing Contractors’ adaptation to Environmentally Sustainable Construction, International Journal of Construction Management, Vol. 1, Issue 1, pp. 32-56. DOI: 10.1080/15623599.2018.1484860
    16. Addy, M.N., Adinyira, E.,and Ayarkwa, J. (2018). Antecedents of Building Information Modelling Adoption among Quantity Surveyors in Ghana: An Application of a Technology Acceptance Model, Journal of Engineering Design and Technology, Vol. 16, Issue 4, pp. 313326 
    17. Kpamma, Z., E.  Adjei-Kumi, T., Ayarkwa, J and Adinyira, E., (2018). Choosing by advantages incorporated framework for a user-involved design process, Architectural Engineering and Design Management, Vol. 14, Issue 3, pp. 194-217. 
    18. Mensah, S., Ayarkwa, J. and Nani, G. (2017). Understanding Environmentally Sustainable Construction Practices of Contractors, Journal of Built Environment, Vol. 1, Issue 1, pp. 32-56.
    19. Boateng, E., Danso, A.K. and Ayarkwa, J. (2017). Modelling the Bond Strength of Reinforced Concrete with Oil Polluted Rebars. International Journal of Construction Engineering and Management, 6(3): 94-102. 
    20. Kpamma, Z.E., Adjei-Kumi, T., Ayarkwa, J. and Adinyira, E. (2017). Participatory design, wicked problems, choosing by advantages. Engineering, Construction and Architectural Management, 24 (2): 289-307. 
    21. Addy, M.N., Adinyira, E. and Ayarkwa, J. (2017). Identifying and Weighting Indicators of Building Energy Efficiency Assessment in Ghana. Energy Procedia, 134 (2017): 161-170.
    22. Ankomah E.N, Ayarkwa, J Agyekum K (2017). A theoretical review of lean implementation within construction SMEs. Journal of Construction Project Management and Innovation 7 (1), 1675-1688
    23. Agyekum K, Ayarkwa, J Salgin B (2017). Diagnosing damp in a tropical building: applying theory to practice. International Journal of Architecture, Engineering and Construction 6 (4), 44-50
    24. Addy, M.N., Adinyira, E. and Ayarkwa, J. (2017). Developing a Building Energy Assessment Tool for Office Buildings in Ghana: Delphic Consultation Approach. Energy Procedia, 111(2017): 629-638. 
    25. Agyekum, K., Ayarkwa, J. and Opoku, D.J. (2017). Fire Safety Preparedness in the Central Business District of Kumasi, Ghana. Asian Journal of Science and Technology, 8 (1): 41694175.
    26. Kpamma, Z., E.  Adjei-Kumi, T., Ayarkwa, J and Adinyira, E. (2017). Choosing by advantages incorporated framework for a user-involved design process,rchitectural Engineering and Design Management, DOI: 10.108 /1745 007.2 17.1341831 
    27. Mensah, S., Ayarkwa, J. and Nani, G. (2017). Understanding Environmentally Sustainable Construction Practices of Contractors, Journal of Built Environment, Vol. 1, Issue 1, pp. 32-56. 
    28. Ofori-Kuragu, J.K., Owusu-Manu, D. and Ayarkwa, J. (2016). The Case for the Construction Industry Council, Ghana. Journal of Construction in Developing Countries, 21 (2):131–149. 
    29. Acheampong, A., Kankam, C.K. and Ayarkwa, J. (2016). Shear Behaviour of Palm Kernel Shell Reinforced Concrete Beams Without Shear Reinforcement: Influence of Beam Depth and Tension Steel. Journal of Civil Engineering and Construction Technology, 7 (2): 8-19. 
    30. Acheampong, A., Atuahene, B. T. and Ayarkwa, J. (2016). Occupants' satisfaction with Burnt Clay Brick (BCB) buildings in Ghana. Int. J. Environ. Sci. Toxic. Res.  4(8): 140-149.
    31. Agyekum, K., Ayarkwa, J. and Amoah, P. (2016). Built and forgotten: Unveiling the defects associated with the Ghana Cocoa Board (COCOBOD) Jubilee house in Kumasi. Journal of Building Performance, 7 (1):23-34. 
    32. Agyekum, K., Ayarkwa, J. and Amoah, P. (2016). Post Occupancy Evaluation of Postgraduate Students’ Hostel Facilities and Services. Journal of Building Performance, 7 (1): 97-104. 
    33. Agyekum, K., Ayarkwa, J. and Amoah, P. (2016). Post Occupancy Evaluation of Postgraduate Students’ Hostel Facilities and Services. Journal of Building Performance, 7 (1): 97-104. 
    34. Agyekum, K., Ayarkwa, J. and De-Graft J.O. (2016). Fire Safety Awareness and Management in Multi-Storey Students’ Hostels. Asian Journal of Applied Sciences, 4 (2): 329-338. 
    35. Adjarko, H., Agyekum, K., Ayarkwa, J. and Amoah, P. (2016). Implementation of Environmentally Sustainable Construction Principles (ESCPs) in the Ghanaian Construction Industry. International Journal of Engineering and Management Research, 6 (2): 585-593. 
    36. Appiagyei, A.A., Ayarkwa, J. and Agyekum, K. (2016). Environmental Considerations in Procurement Decisions: A Literature Review. Sustainability in Environment, 1(1): 40-53. 
    37. Agyekum, K., Ayarkwa, J. and Amoah, P. (2016). Challenges to Fire Safety Management in Multi-Storey Students’ Hostels. Modern Management Science and Engineering, 4 (1): 53-61. 
    38. Opoku, D., Ayarkwa, J. and Agyekum, K. (2016). Factors Inhibiting the Use of Bamboo in   Building Construction in Ghana: Perceptions of Construction Professionals. Materials Science and Applications, Vol. 7 No. 1, pp. 83-88. ISSN Print: 2153-117X; ISSN Online: 2153-1188; Doi: http://dx.doi.org/ 10.423 6/m sa. 2016.72008. 
    39. Agyekum, K., Ayarkwa, J. and Adjarko, H. (2015). Perceptions of Quantity Surveyors on Challenges to and Benefits of Incorporating ICT in Quantity Surveying Practice in Ghana.Asian Engineering Review, Vol 2, No. 3, 30-36. ISSN: 2409-6725. 
    40. Simons, B., Koranteng, C.,and Ayarkwa, J., (2015). Practical Energy Savings Techniques forMulti-storey Office Buildings in Accra, Ghana. International Journal of Engineering and Computer science, Vol 4, No. 2, 15262-15273. ISSN: 2319-7242, DOI:  http://dx.doi.org/10.18535/ijecs/v4i12.30 
    41. Acheampong, A., Adom-Asamoah, M., Ayarkwa, J. and Afrifa, R.O. (2015). Code compliant behaviour of palm kernel shell reinforced concrete (RC) beams in shear. Journal of Civil Engineering and Construction Technology, Vol. 6, No. 4, 59-70. DOI http://dx.doi.org/10.5897/JCECT2015.0367, ISSN: 1996-0816. 
    42. Kpamma, Z.E., Adinyira, E., Ayarkwa, J. and Adjei-Kumi, T. (2015). Application of the CBA Decision System to Manage User Preferences in the Design Process. J. Prof. Issues Eng. Educ. Pract., ASCE 05015004. ISSN (print): 1052-3928 ISSN (online): 1943-5541 http://dx.doi.org/10.1061/(asce)ei.1943-5541.0000258 
    43. Kpamma, Z.E., Adjei-Kumi, T., Ayarkwa, J. and Adinyira, E. (2015). An exploration of the choosing by advantages decision system as a user engagement tool in participatory design. Architectural Engineering and Design Management, Vol. 12, No. 1, 51-66, DOI: 10.1080/17452007.2015.1095710. ISSN 1745-2007 (Print) 1752-7589 (Online) http://dx.doi.org/10.1080/17452007.2015.1095710 
    44. Mensah, S., Ayarkwa, J., and Nani, G. (2015). Towards enabling construction organizations' adaptation to environmentally sustainable construction in developing countries. Advances inSocial Sciences Research Journal, Vol. 2, No. 10, 84-100. ISSN 2055-0288. 
    45. Orgen, N.K., Ayarkwa, J., Ahadzie, D.K. and Badu, E. (2015). Effect of Construction Business Relationship Situation on Design Service Delivery in Ghana. Engineering Management Research, Vol.4, No. 1, pp. 13-29. ISSN 1927-7318 (Print) ISSN 1927-7326 (Online). http://dx.doi.org/10.5539/emr.v4n1p13 
    46. Orgen, N.K., Ahadzie, D.K., Ayarkwa, J., and Badu, E. (2015). The Nature of Supply Chain and Business Relationship in Construction Design Service Delivery in Ghana. Journal of Civil Engineering and Architecture Research, Vol. 2, No. 6, pp. 708-723. Print ISSN: 2333-911X Online ISSN: 2333-9128 
    47. Somiah, M.K., Ayarkwa, J. and Agyekum, K. (2015). Assessing House Owners' Level of Awareness on the National Building Regulations, L.I. 1630, in the Sekondi Takoradi Metropolis.  African Journal of Applied Research, Vol. 1, No. 1, pp. 170-178. ISSN: 24087920.
    48. Opoku, D., Hackman, J.K., Ayarkwa, J. and Agyekum, K. (2015). Assessing areas and trends of bamboo usage in building construction in Ghana. African Journal of Applied Research, Vol. 1, No. 1, pp. 46-57. ISSN: 2408-7920.
    49. Simons, B., Koranteng, C., and Ayarkwa, J., (2015). Simulation-based assessment of the thermal performance of high-rise office buildings in Ghana. British Journal of Applied Science and Technology, Vol.8, No. 2, pp 165-179.ISSN2231-0843, http://dx. doi. org/10 .9734/ B JAST /2015/16700 
    50. Adinyira, E., Ayarkwa, J and Aidoo, I (2014). Knowledge and Usage of the Seven Basic Quality Control Tools by Producers of Precast Concrete Products in Ghana. Journal of Construction Project Management and Innovation Vol. 4 (2): 966-975. ISSN 2223-7852 
    51. Adjarko, H., Osei-Poku, G. and Ayarkwa, J. (2014). Challenges to the Incorporation of Environmental Sustainability Issues into Construction Procurement at the Local Government Level of Ghana. International Refereed Journal of Engineering and Science, Vol. 3 No. 11, pp.42-52. e-ISSN 2319-183X p-ISSN 2319-1821 
    52. Agyekum, K., Ayarkwa, J. and Koranteng, C. (2014). A Holistic Survey of Dampness in a Six Bedroom Residential Apartment. Journal of Science and Technology, Vol. 34, No. 1, pp. 3045. ISSN 0855-0395. http://dx.doi.org/10.4314/just.v34i1.4 
    53. Agyekum, K., Ayarkwa, J. and Adinyira, E. (2014). A Holistic Survey of Dampness in a Three Bedroom Residential Bungalow in Kumasi, Ghana. Case Studies in Construction Materials, Vol 1 (2014), pp. 125-137. ISSN 2214-5095. http://dx doi.org/10. 016/j.cscm.2014.07.002 
    54. Agyekum, K. and Ayarkwa, J. (2014). A Two-Stage Approach to Damp Investigation in a Three Bedroom Residential Building in Kumasi, Ghana. Journal of Building Performance, Vol. 5, No. 1, pp. 50-61. ISSN: 2180-2106.
    55. Agyekum, K., Ayarkwa, J. and Koranteng, C. (2014). Holistic Diagnosis of Rising Damp and Salt Attack in Two Residential Buildings in Kumasi, Ghana. Journal of Construction Engineering, Vol 2014, pp. 1-13, Hindawi Publishing Cooperation. Available.http://dx.d i.org/10.1155/2014/398627 
    56. Agyekum, K. and Ayarkwa, J. (2014). Diagnosing Rising Damp in the Walls of a Six Bedroom Residential Apartment in Kumasi, Ghana. International Journal of Development and Sustainability, Vol. 3, No. 5, pp. 1174-1198, ISSN: 2168 8662. 
    57. Agyekum, K. and Ayarkwa, J. (2014). Dampness in Walls of Residential Buildings: The Views of Building Construction Professionals in Ghana. Africa Development and Resources Research Institute Journal, Vol. 7, No. 7(2), pp. 19-36, pISSN 2343-6662 ISSN: 2343 6662. 
    58. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2014). An Overview of Damp Remediation Measures Practiced by Building Occupants in Ghana. Journal of Building Survey, Appraisal and Valuation, Vol. 2, No. 4, pp. 347-359. ISSN: 2046-9594 E-ISSN:2046-9608. 
    59. Agyekum, K., Ayarkwa, J. and Koranteng, C. (2014). Perceptions of Building Occupants on Effectiveness of Practiced Damp Remediation Measures in Ghana. Journal of Environmental and Earth Science, Vol. 4, No. 1, pp. 121-131. ISSN: 2224-3216 pISSN: 2225-0948.
    60. Acheampong, A., Ayarkwa, J., Hackman, J.K. and Agyekum, K. (2014). Factors inhibiting the use of indigenous building materials (IBM) in the Ghanaian Construction Industry. Africa Development and Resources Research Institute (ADDRI) Journal, Vol. 8, No. 8(2), pp. 1-15, pISSN: 2343 6662 ISSN-L 2343 6662. 
    61. Ayarkwa, J., Acheampong, A., Hackman, J.K. and Agyekum, K. (2014). Environmental Impact of Construction Site Activities in Ghana. Africa Development and Resources Institute (ADDRI) Journal, Vol. 9, No. 9(2), pp. 1-19. pISSN: 2343 6662 ISSN-L 2343 6662 
    62. Simons, B., Koranteng, C., Adinyira, E., Ayarkwa, J., (2014). An Assessment of Thermal Comfort in Multi - Storey Office Buildings in Ghana. Journal of Building Construction and Planning Research, (2), pp 30-38. ISSN Print: 2328-4889 ISSN Online: 2328-4897.http://dx.doi.org/10.4236/jbcpr.2014.21003
    63. Simons, B., Koranteng, C., Ayarkwa, J., (2014). Occupants' Evaluation of the Operation, Functionality of Building Control Systems and Energy Implications in Multi Storey Office Buildings in Ghana. Journal of Energy and Policy, 4 (2), pp 48-58. ISSN 2225- 0573. 
    64. Ayarkwa, J., Baiden, B.K. and Sabah, S.C.B. (2014). Consultants' Performance on District Assemblies' Common Fund Projects. Modern Management Science & Engineering, 2(1): 4357, ISSN: 2052- 2576.
    65. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Preliminary Assessment of Dampness in Walls of Residential Buildings in Four Climatic Zones in Ghana. Journal of Sustainable Development, Vol. 6, No. 9, pp. 51-61. ISSN: 1913-9063, E-ISSN: 1913-9071, doi:105539/jsd.v6n9p51. http://dx.doi.org/10.5539/jsd.v6n9p51
    66. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). An Overview of the Symptoms Associated with Dampness in Walls of Residential Buildings in Major Towns in Ghana. Civil and Environmental Research, Vol. 3, No. 9, pp. 1-9, ISSN: 2224-5790, E-ISSN: 2225-0514.
    67. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Level of Knowledge of Building Occupants on Dampness in Walls of Residential Buildings in Ghana. Modern Management Science and Engineering, Vol. 1, No. 2, ISSN: 2052-2576.
    68. Agyekum, K., Ayarkwa, J. and Adjei-Kumi, T. (2013). Minimizing Materials Wastage in Construction- A Lean Construction Approach. Journal of Engineering and Applied Science, Vol. 5, No. 1, pp. 125-146, ISSN: 2277-0097.
    69. Ayarkwa, J., Acheampong, A. and Agyekum, K. (2013). Residents' Satisfaction with the Social Security and National Insurance Trust Housing in Ghana. Engineering Management Research,Vol.2,  No.  2,pp. 29-40. ISSN: 1927-7318, E-ISSN: 1927-7326. http://dx. doi.org/10.5539/emr.v2n2p29
    70. Ayarkwa, J., Baiden, B.K. and Osei-Asibey, D. (2013). Benefits derived by District Assemblies from their project consultants. Engineering Management Research, 2 (2): 41-50. ISSN 1927-7318 E-ISSN 1927-7326.
    71. Acheampong, A., Adom-Asamoah, M., Ayarkwa, J. and Afrifa, R.O. (2013). Comparative study of the physical properties of palm kernel shells concrete and normal weight concrete in Ghana. Journal of Science and Multidisciplinary Research, 5 (1): 129-146. ISSN 2277-013
    72. Ayarkwa, J., Agyekum K. and Adinyira E. (2013). Barriers to successful implementation of Lean Construction in the Ghanaian building industry, Journal of Construction, 5(1): pp. 3-11. ISSN 1994 – 7402
    73. Orgen, N. K., Ahadzie, D. K., Ayarkwa, J. and Badu, E. (2013), Conceptual models for assessing adversarial business relationship and improvement of Engineering And Design Service Delivery (EDSD) in Ghana, Journal of Construction Project Management and Innovation, Vol. 3(1), 480-497.ISSN: 1994-7402
    74. Owusu, F.W., Ayarkwa, J. and Frimpong-Mensah, K. (2013). Sanding properties of seven lesser-used timber species in Ghana. Ghana Journal of Forestry, 28(1): 1-14. ISSN: 0855-1707
    75. Ayarkwa, J., Agyekum, K., Adinyira, E, and Osei-Asibey, D. (2012). Perspectives for the implementation of lean construction in the Ghanaian construction industry. Journal of Construction Project Management and Innovation, 2(2): 345-359. ISSN: 1994-7402
    76. Ayarkwa, J., Agyekum, K. and Acheampong, A. (2012). Ghanaian construction professionals' perception on challenges to female retention in the construction industry. Journal of Construction Project Management and Innovation,2 (2): 360-376. ISSN: 1994 7402
    77. Ayarkwa, J., E. Adinyira and D. Osei-Asibey (2012) Industrial Training of Construction Students: Perceptions of Training Organizations in Ghana. Education + Training. Vol 54 No.2/3 pp 234-249 ISSN 0040-0912 http://dx.doi.org/10.1108/00400911211210323
    78. Ayarkwa, J., Adinyira E. and Agyekum K. (2012) Perceptions of undergraduate construction students on Industrial Training in Ghana. Journal of Science and Technology, JUST, Vol 32, No. 1. pp 68-79 ISSN: 0855-0395http://dx.doi.org/10.4314/just.v32i1.7
    79. Agyekum, K., Ayarkwa, J. and Adinyira E. (2012). Consultants' Perspectives on MaterialsWaste Reduction in Ghana. Engineering Management Research, Vol 1, No.1, pp. 138-150. ISSN: 1927-7318 http:// dx. doi.org/10.5539/emr.v1n1p138
    80. Ayarkwa, J., Agyekum, K. and Adinyira, E. (2011) Exploring Waste Minimization Measures in the Ghanaian Construction Industry. Built Environment Journal (BEJ), Vol. 8 No. 2, pp. 2230. ISSN 1675-5022
    81. Ayarkwa, J., Owusu, F.W. and Appiah, J.K. (2011) Cold bending performance of some selected timber species of Ghana. Ghana Journal of Forestry. Vol 27 No. 3, pp. 94-104. ISSN: 0855-1707.
    82. Owusu, F.W. and Ayarkwa J. (2011) Machining characteristics of Khaya senegalensis and Anogeisus leiocarpus. Ghana Journal of Forestry. Vol 23 No.2, pp. 97-111. ISSN: 0855-1707
    83. Ayarkwa, J., Owusu, F.W. and Appiah, J. K. (2011) Steam bending qualities of eight timber species of Ghana. Ghana Journal of Forestry. Vol 23 No.2, pp. 11-22. ISSN: 0855-1707
    84. Danso, A.K., Ayarkwa J. and A. Danso (2011) State of Accessibility for the Disabled in Selected Monumental Public Buildings in Accra, Ghana. The Ghana Surveyor Vol 4, No. 1, pp. 1-19. ISSN 0855-9538
    85. Ayarkwa, J., Ayirebi Dansoh, Adinyira, E. and Amoah, P. (2011) Performance of Building Technology graduates in the construction industry in Ghana. Education + Training, Vol. 53, No. 6, pp. 531-545. ISSN 0040-0912 http://dx.doi.org/10.1108/00400911111159485
    86. Ayarkwa, J. (2010) Comparing the effectiveness of three acoustic emission procedures for predicting strengths of finger-joints from tropical African hardwoods. Ghana Journal of Forestry, Vol 26, 2010. pp. 1-13. ISSN: 0855-1707
    87. Ayarkwa, J. (2010) Perspectives on environmental management in the construction industry in Ghana. International Journal of Sustainable Development, Vol. 3, No 9, pp. 60-68. ISSN 2276-6111
    88. Ayarkwa, J., Ayirebi Dansoh and Amoah, P. (2010) Barriers to implementation of EMS in construction industry in Ghana. International Journal of Engineering Science, Vol. 2, No. 4, pp. 37-45. ISSN 2276-6138
    89. Ayarkwa, J., Danso, A.K. and Adinyira, E. (2010) Incidence of domestic fire outbreaks in Ghana: causes and prevention. The Ghana Surveyor, Vol. 3, No. 1.pp. 7- 20. ISSN: 0855- 9538
    90. Adinyira, E. and Ayarkwa, J. (2010) "Potential Critical Challenges to Internationalization by Ghanaian Contractors". The Ghana Surveyor, Vol. 3, No. 1. pp. 59-70. ISSN 0855-9538.
    91. Ayarkwa, J., Hirashima, Y., Ando, K. and Sasaki, Y. (2001) Monitoring acoustic emissions from finger-joints from tropical African hardwoods for predicting ultimate tensile strength. Holzforschung. Vol.55 No. 6, 2001. pp 652-660. ISSN: 1437-434X
    92. Ayarkwa, J., Hirashima, Y., Ando, K. and Sasaki, Y. (2001) Monitoring acoustic emissions to predict modulus of rupture of finger-joints from tropical African hardwoods. Wood and Fiber Science. Vol.33 No.3, 2001. pp.450-464. ISSN: 0735-6161
    93. Ayarkwa, J., Hirashima Y. and Sasaki Y. (2001) Predicting modulus of rupture of solid and finger-jointed tropical African hardwoods using longitudinal vibration. Forest Products Journal. Vol. 51 No.1, 2001. pp. 85-92. ISSN: 0015-7473
    94. Ayarkwa, J., Hirashima, Y. and Sasaki, Y. (2000) Predicting tensile properties of finger-jointed tropical African hardwoods using longitudinal vibration method. Ghana Journal of Forestry Vol. 9, 2000. pp. 45-56. ISSN: 0855-1707
    95. Ayarkwa, J., Hirashima, Y. and Sasaki, Y. (2000) Influence of finger-joint geometry and end pressure on tensile properties of three finger-jointed tropical African hardwoods. Southern African Forestry Journal No. 188, 2000. pp. 37-49. ISSN 2070-2620 http://dx.doi.org/10. 1080/ 10295925.2000.9631268
    96. Ayarkwa, J., Hirashima, Y., Sasaki, Y. and Ando, K. (2000) Effect of glue type on flexural and tensile properties of finger-jointed tropical African hardwoods. Forest Products Journal Vol. 50 No. 10, 2000. pp. 59-68. ISSN: 0015-7473
    97. Ayarkwa, J., Hirashima, Y. and Sasaki, Y. (2000). Effect of finger geometry and end pressure on the flexural properties of finger-jointed tropical African hardwoods. Forest Products Journal Vol. 50 No. 11/12, 2000. pp. 53-63. ISSN: 0015-7473
    98. Ayarkwa, J., Hirashima, Y. and Sasaki, Y. (2000). Predicting ultimate tensile and bending strengths of three finger-jointed tropical African hardwoods using acoustic emission. Southern African Forestry Journal No 189, 2000. pp. 53-62.   ISSN 2070-2620http:/ /dx.doi.org/10.1080 / 10295925.2000.9631280
    99. Ayarkwa, J. (2000). Cold and steam bending qualities of six Ghanaian timber species. Ghana Journal of Forestry Vol. 9, 2000. pp. 1-10. ISSN: 0855-1707
    100. Ayarkwa, J. and Owusu, F.W. (2000). Utilisation of savanna tree species: Planning characteristics of Anogeisus leiocarpus (Kane) and Khaya senegalensis (Khaya). Wood News. Vol. 9 No. 4, Jan - March 2000. pp. 27-30. ISSN: 0149-7200.
    101. Ayarkwa, J., Hirashima, Y. and Sasaki, Y. (1999). Predicting static bending modulus of elasticity of tropical African hardwoods from density using a model based on longitudinal vibration. Ghana Journal of Forestry Vol. 8, 1999. pp. 1-8. ISSN 0855-1707
    102. Ayarkwa, J. and Addae-Mensah, A.G (1999). Processing of small diameter logs: Effect of log diameter, sawing pattern and some bole variables on lumber recovery. Ghana Journal of Forestry, Vol. 8, 1999. pp. 43-51. ISSN 0855-1707
    103. Ayarkwa, J. (1999). Influence of wood defects on some mechanical properties of two tropical Ghanaian hardwoods. Journal of the Ghana Science Association. No.2, 1999. pp. 131-147 ISSN 0855-3823. http://dx.doi.org/10.4314/jgsa.v1i2.17813
    104. Ayarkwa, J. (1999). Determination of bending modulus of elasticity of Pterygota macrocarpus K. Schum (KYERE) and Piptadeniastrum africanum (DAHOMA) using two international testing norms. Journal of the Ghana Science Association. Vol.1, No.3, 1999. pp. 126-132. ISSN0855-3823
    105. Ayarkwa, J. (1998). The influence of site and axial position in a tree on density and strength properties of the wood of Pterygota macrocarpa K. Schum (Kyere). Ghana Journal of Forestry, Vol. 6,1998. pp. 43-41. ISSN 0855-1707
    106. Ayarkwa, J. (1998). New marketable Ghanaian timber species for furniture and construction. Wood News. Vol. 8 No. 2, July - Sept. 1998. pp. 13-18 ISSN 0149-7200
    107. Addae-Mensah, A. and Ayarkwa, J. (1997). Some machining characteristics of selected lesser used species of Ghana. Ghana Journal of Forestry, Vol. 6, 1998. pp. 8-14. ISSN 0855-1707
    108. Ayarkwa, J. and Addae-Mensah, A.G (1997). Utilization of savannah species: some processing characteristics of Anogeisus leiocarpus (KANE) and Khaya senegalensis (KHAYA). Wood News Journal, Vol. 7, No. 3 October - December 1997. pp. 6-11. ISSN 0149-7200
    109. Ayarkwa, J. (1997). Potential for utilization of Borassus aethiopum (Fan Palm) in construction in Ghana. Wood News Journal, Vol.6 No.4 Jan-March, pp. 1997. 15-18. ISSN 0149-7200
    110. Ayarkwa, J. (1994). Strength properties of Yaya, (Amphimas pterocarpoides). Ghana Journal of Forestry, Vol. 1, 1994. pp. 57-59. ISSN 0855-1707
    111. Addae-Mensah, A.G., Eastin, I.L. and Ayarkwa, J. (1993). An appropriate processing technology for rubberwood in Ghana. Wood New Journal, Vol. 3 No.3 October - December,1993. pp. 41-43. ISSN 0149-7200
    112. Ayarkwa, J., and Addae-Mensah A.G. (1992). Basic stresses of three pine species grown in Ghana. FPRI Techn. Bull. Vol. 8, 9, 10, 1988-1990. Pp. 33-42. ISSN 0030-4387
    113. Addae-Mensah, A.G., Ayarkwa, J., Mohammed, A.I., and Azerengo, E (1989). User's guide of some Ghanaian secondary and primary timber species based on strength and related properties. FPRI Information Bull. No. 9, 1989.ISSN 0030-4387

    Peer-reviewed Conference Papers

    1. Ankomah, E.N., Ayarkwa, J. and Agyekum, K. (2018), Conceptual Framework for Capability and Capacity Building of SMEs for Lean Construction Adoption. In: Proceedings of 26th Annual Conference of the International Group for Lean Construction. DOI:10.24928/2018/0495
    2. Opoku, D.J., Ayarkwa, J. and Agyekum, K., (2018), Barriers to the Adoption of Environmental Sustainability at the Design Stage of Projects. In: Proceedings of 7th International Conference on Infrastructure Development in Africa, Ikorodu, Lagos, Nigeria, March, 28-30, 2018, ISSN 978-978-36544-5-8.
    3. Appiagyei, A. A., Ayarkwa, J. and Agyekum, K., Opoku, D.J., (2018), Barriers to the Implementation of Environmentally Sustainable Procurement in Public Universities. In: Proceedings of 7th International Conference on Infrastructure Development in Africa, Ikorodu, Lagos, Nigeria, March, 28-30, 2018, ISSN 978-978-36544-5-8.
    4. Opoku, D.J., Ayarkwa, J. and Agyekum, K. (2017). A Conceptual Framework of Push Factors for Implementing Environmentally Sustainable Construction Practices. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 1214, 2017. 
    5. Acquah, G. and Ayarkwa, J. (2017). Sensitivity of Factors used in Modelling Creep in Ghana. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    6. Agyekum, K., Ayarkwa, J. and Salgin, B. (2017). A Methodology for Diagnosing Damp in a Tropical Building. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    7. Ankomah, E.N., Ayarkwa, J. and Agyekum, K. (2017). A Theoretical Review of Lean Implementation within Construction SMEs. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    8. Addy, M.N., Adinyira, E. and Ayarkwa, J. (2017). Antecedents of Building Information Modelling Adoption among Quantity Surveyors in Ghana: An Application of a Technology Acceptance Model. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017.
    9. Acquah, G. and Ayarkwa, J. (2017). Contribution of Factors to the Development of Drying Shrinkage in Ghana. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    10. Akakpo, S., Ayarkwa, J. and Agyekum, K. (2017). A Conceptual Framework to Evaluate Road Users’ Satisfaction of George Walker Bush Highway, Ghana. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 1214, 2017. 
    11. Mensah, S., Ayarkwa, J. and Nani, G. (2017). Contractors’ Adaptability and Growth in Environmentally Sustainable Processes Application. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    12. Simons, B., Koranteng, C. and Ayarkwa, J. (2017). A Tale of Two Cities: An Analysis of the Thermal Performance of Glazed Office Buildings in Ghana.  In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    13. Ayarkwa, J., Acheampong, A., Wiafe, F. and Boateng, B.E. (2017). Factors Affecting the Implementation of Sustainable Construction in Ghana: The Architect’s Perspective. In: Proceedings of 6th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, April, 12-14, 2017. 
    14. Addy, M.N., Adinyira, E. and Ayarkwa, J. (2017). Identifying and Weighting Indicators of Building Energy Efficiency Assessment in Ghana. In: Proceedings of 9th International Conference on Sustainability in Energy and Buildings, SEB-17, Chania, Crete, Greece, July, 57, 2017.
    15. Kpamma, Z. E., Adjei-Kumi T., Ayarkwa, J., and Adinyira E. (2017). Strategic considerations for applying choosing by advantages in design process.” In: Proceedings of Lean and Computing in Construction Congress (LC3), Vol. 1 (IGLC), Heraklion, Greece, July, 2017.
    16.  Addy, M.N., Adinyira, E. and Ayarkwa, J. (2016). Developing a Building Energy Assessment Tool for Office Buildings in Ghana: Delphic Consultation Approach. In: Proceedings of 8th International Conference on Sustainability in Energy and Buildings, SEB-16, Turin, Italy, September, 11-13, 2016. 
    17. Mensah, S., Ayarkwa, J. and Nani, G. (2016). Barriers against contractors’ adaptation of environmentally sustainable construction practices. In: Proceedings of Association of Researchers in Construction Management (ARCOM) Conference, Ashesi University College, Accra, Ghana. July, 27-28, 2016.  
    18. Agyekum, K., Ayarkwa, J. and Amoah, P. (2016). Fire Safety Awareness and Management in Multi-Storey Students’ Hostels. In: Proceedings of 5th International Conference on Infrastructure Development in Africa, Johannesburg, South Africa, July, 10-12, 2016.
    19. Agyekum, K., Ayarkwa, J., Amoah, P. and Boateng, B.E. (2016). Challenges to Fire Safety Management in Multi-Storey Students’ Hostels. In: Proceedings of 5th International Conference on Infrastructure Development in Africa, Johannesburg, South Africa, July, 10-12, 2016. 
    20. Agyekum, K., Ayarkwa, J. and Koranteng, C. (2016). Controlling Rising Damp in New Buildings: Field Trials of Proposed Treatment Methods. In: Proceedings of 5th International Conference on Infrastructure Development in Africa, Johannesburg, South Africa, July, 10-12, 2016. 
    21. Addy, M. N., Adinyira E. and Ayarkwa, J. (2016). Developing a Building Energy Efficiency Assessment Tool for office buildings in Ghana: Delphic consultation approach. In: Proceedings of 8th International Conference on Sustainability in Energy and Buildings, Turin, Italy, September, 11-13, 2016. 
    22. Addy, M. N., Adinyira E. and Ayarkwa, J. (2016). Building Energy Efficiency Assessment Tool Development Approach. In: How many ways can you change a light bulb? In Proceedings of LoLo CDT Student led conference, University College of London, London. UK, June, 16, 2016. 
    23.  Ayarkwa, J., Adinyira, E., Koranteng C. and Addy, M. N. (2015). Conceptual Framework of a Tool Development for Energy Efficiency Assessment of Buildings in Developing Countries: Case of Ghana. In: Proceedings of 4th International Conference on Infrastructure Development in Africa, Kumasi, Ghana, March, 25-26, 2015. 
    24. Mensah, S., Ayarkwa, J. and Nani, G. (2015). Adapting to environmentally sustainable construction in developing countries: a multi-theory conceptualization. In: Proceedings of Smart and Sustainable Built Environment (SASBE 2015), Pretoria, South Africa, December, 9-11, 2015.
    25. Agyekum, K., Ayarkwa, J. and Opoku-Ware, S.N. (2015). Built and Forgotten: Unveiling the Defects Associated with the Ghana Cocoa Board (Cocobod) Jubilee House in Kumasi. In Proceedings: 2nd International Conference on Applied Sciences and Technology, Kumasi Polytechnic, Kumasi, 28th-30th October, 2015, pp. 75. 
    26. Agyekum, K., Ayarkwa, J. and Acheampong, A. (2015). Post Occupancy Evaluation of Postgraduate Hostel Facilities and Services at the Kwame Nkrumah University of Science and Technology, Kumasi. In Proceedings: 2nd International Conference on Applied Sciences and Technology, Kumasi, 28th-30th October, 2015, pp. 67. 
    27. Agyekum, K., Ayarkwa, J. and Opoku-Ware, S.N. (2015). Perceptions of Quantity Surveyors on Challenges to and Benefits of Incorporating Information Technology in Quantity Surveying Practice in Ghana. In Proceedings: 2nd International Conference on Applied Sciences and Technology, Kumasi, 28th -30th October, 2015, pp. 76. 
    28. Adjarko, H., Ayarkwa, J. and Agyekum, K. (2015). Incorporating environmental sustainability into construction procurement at the district assembly level in Ghana. In: Laryea, S. and Leiringer R. (Eds) Procs 6th West Africa Built Environment Research (WABER) Conference, 10-12 August 2015, Accra, Ghana, 669-689. 
    29. Barbara, S., Koranteng, C. and Ayarkwa, J. (2015). Simulation-based assessment of the thermal performance of high-rise office buildings in Ghana. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 44-66. 
    30. Ayarkwa, J., Adinyira, E., Koranteng, C. and Addy, M.N. (2015). A conceptual framework of a tool development for energy efficiency assessment of buildings in developing countries: Case of Ghana. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 67-86. 
    31. Zoya, E.K., Adjei-Kumi, T., Ayarkwa, J. and Adinyira, E. (2015). Development of a userinvolvement framework for design process: An exploration of the design science research paradigm. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 143-155. 
    32. Somiah, M.K., Ayarkwa, J., Agyekum, K. and Hackman, J.K. (2015). Factors contributing to the construction of unauthorized residential buildings in Ghana. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 156-172.
    33. Acquah, G.K.K., Ayarkwa, J., Danso, A.K. and Oteng-Seifah, S. (2015). Accuracy of drying shrinkage predicting models in Ghana. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 173-185.
    34. Acquah, G.K.K., Oteng-Seifah, S., Ayarkwa, J. and Danso, A.K. (2015). Accuracy of creep predicting models in Ghana. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 262-276.
    35. Mensah, S., Ayarkwa, J. and Nani, G. (2015). Understanding environmentally sustainable construction practices of construction contractors in Ghana. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 329-340. 
    36. Hackman, J.K., Acheampong, A., Agyekum, K. and Ayarkwa, J. (2015). Factors affecting site supervision in the Ghanaian Construction Industry. In Badu, E., Ayarkwa, J., Ahadzie, D., Adinyira, E., Owusu-Manu, D. and Kwofie, T. (eds) Procs 4th International Conference on Infrastructure Development in Africa, 25-26 March 2015, Kumasi, Ghana, pp. 341-352.
    37. Agyekum, K. and Ayarkwa, J. (2015). Diagnosing rising damp: Lessons from three residential buildings in Kumasi. 8th Annual GRASAG-KNUST International Research Conference, 25th March 2015, Kumasi, Ghana, pp. 53. 
    38. Agyekum, K., Ayarkwa, J. and Adinyira, E. (2014). A Case Study of Dampness in a Three Bedroom Residential Building at Deduako, Kumasi. In Ejohwomu, O. and Oshodi, O. (eds) Procs 3rd International Conference on Infrastructure Development in Africa, 17-19 March 2014, Abeokuta, Nigeria, pp. 351-365.
    39. Agyekum, K., Ayarkwa, J. and Koranteng, C. (2014). A Holistic Survey of Dampness in a Three Bedroom Residential Bungalow in Kumasi, Ghana. In Ejohwomu, O. and Oshodi, O.  (eds) Procs 3rd International Conference on Infrastructure Development in Africa, 17-19 March 2014, Abeokuta, Nigeria, pp. 366-384. 
    40. Opoku, D., Ayarkwa, J. and Agyekum, K. (2014). Assessing Areas and Trends of Bamboo Usage in Building Construction in Ghana. In Laryea, S. and Ibem, E. (eds) Proceedings 8th Construction Industry Development Board (cidb) Postgraduate Conference, 10-11 February 2014, University of the Witwatersreand, Johannesburg, South Africa, pp. 131-141. 
    41. Opoku, D., Ayarkwa, J. and Agyekum, K. (2014). Factors Influencing the Use of Bamboo in Building Construction in Ghana: Perceptions of Architects and Building Contractors. In Proceedings 1st Bamboo Colloquim. CSIR-Forestry Research Institute of Ghana, Fumesua- Kumasi, April 29-30, 2014. 
    42. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Level of Knowledge of Building Occupants on Dampness in Walls of Residential Buildings in Ghana. In: Nkum, R.K., Nani, G., Atepor, L., Oppong, R.A., Awry, E. and Bamfo-Agyei, E. (Eds) Procs 2nd Applied Research Conference in Africa (ARCA), 8-10 August 2013, Kumasi-Ghana, pp. 194-205. 
    43. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Assessment of Dampness in Walls of Residential Buildings in Four Climatic Zones in Ghana. In: Nkum, R.K., Nani, G., Atepor, L., Oppong, R.A., Awre, E. and Bamfo-Agyei, E. (Eds) Procs 2nd Applied Research Conference in Africa (ARCA), 8-10 August 2013, Kumasi-Ghana, pp. 194-205. 
    44. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Level of Practice and Effectiveness of Damp Remediation Measures in Walls of Residential Buildings in Ghana.   In Proceedings: 3rd International Conference on Design, Development and Research (DDR), 18-20 July 2013, Faculty of Art, College of Art and Social Sciences, KNUST, Kumasi, Ghana, pp. 297-311. 
    45. Mensah, S. Ayarkwa, J. and Nani, G. (2014) Framework for modeling sustainable construction practices towards low carbon construction. In: Laryea, S. and Ibem, E. (Eds) Proceedings 8th Construction Industry Development Board (cidb) Postgraduate Conference, 10-11 February 2014, University of the Witwatersrand, Johannesburg, South Africa, 293-303 
    46. Kpamma, Z. E., Adjei-Kumi, T., Ayarkwa, J., & Adinyira, E.  (2014). Creating, sustaining and optimizing the collaborative realm for participatory design. Proceedings, 22nd annual conference of the International Group for Lean Construction (IGLC- 22), Oslo, Norway.    
    47. Kpamma, Z. E., Adjei-Kumi, T., Ayarkwa, J., & Adinyira, E.  (2014). Enhancing user- involvement through a multi-criteria decision aid: A lean design research agenda. Proceedings, 22nd Annual conference of the International Group for Lean Construction (IGLC- 22), Oslo, Norway.   
    48. Acheampong, A., Hackman, J.K., and Ayarkwa, J. (2014). Factors inhibiting the use of indeginous building materials (IBM) in the Ghanaian Construction Industry. In Ejohwomu, O. and Oshodi, O. (eds) Procs 3rd International Conference on Infrastructure Development in Africa, March, 17-19, 2014, Abeokuta, Nigeria, p. 216-226 ISBN: 978-978-938-173-9.
    49. Agyekum, K., Ayarkwa, J. and Adinyira, E. (2014). A case study of dampness in a three-bedroom residential building at Deduako, Kumasi. In Ejohwomu, O. and Oshodi, O. (eds) Procs 3rd International Conference on Infrastructure Development in Africa, March17-19, 2014, Abeokuta, Nigeria, p. 351-365 ISBN: 978-978-938-173-9
    50. Agyekum, K., Ayarkwa, J. and Koranteng, C. (2014). A holistic survey of dampness in a three-bedroom residential bungalow in Kumasi, Ghana. In Ejohwomu, O. and Oshodi, O. (eds) Procs 3rdInternation Conference on Infrastructure Development in Africa, March17-19, 2014, Abeokuta, Nigeria, p. 366-384 ISBN: 978-978-938-173-9
    51. Ansah, S.K., Ayarkwa, J., Adinyira, E., and Ametepey, S. O. (2014) Factors Influencing Professionals’ Selection of Building Materials for Housing Delivery in Ghana In: Nkum R.K.,  Nani G., Atepor, L., Oppong, R.A., Awere E., and Bamfo-Agyei, E. (Eds) Procs 3rd Applied Research Conference in Africa. (ARCA) Conference, 7-9 August 2014, Accra, Ghana; p. 271284.
    52. Opoku, D., Ayarkwa, J. and Agyekum, K. (2014). Assessing areas and trends of bamboo usage in building construction in Ghana. In Laryea, S. and Ibem, E (eds) Proceedings 8th Construction Industry Development Board (cidb) Postgraduate Conference, February 10-11, 2014, University of Witwatersrand, Johannesburg, South Africa; p. 131-141, ISBN 978-0-9566060-8-2
    53. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Assessment of dampness in walls of residential buildings in four climatic zones in Ghana. In: Nkum, R.K., Nani, G., Atepor, L., Oppong, R.A., Awere, E. and Bamfo-Agyei, E. (eds) Proc 2nd Applied Research Conference in Africa (ARCA), August, 8-10,2013, Kumasi-Ghana, p. 194-205, ISBN 9789988-1-7051-6
    54. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Level of knowledge of building occupants on dampness in walls of residential buildings in Ghana. In: Nkum, R.K., Nani, G., Atepor, L., Oppong, R.A., Awere, E. and Bamfo-Agyei, E. (eds) Procs 2nd Applied Research Conference in Africa (ARCA), August 8-10, 2013, Kumasi-Ghana, p. 389-399, ISBN 978-9988-1-7051-6.
    55. Agyekum, K., Ayarkwa, J., Koranteng, C. and Adinyira, E. (2013). Level of practice and effectiveness of damp remediation measures in walls of residential buildings in Ghana. In Proceedings of 3rd International Conference on Design, Development and Research (DDR), July 18-20, 2013, Faculty of Art, College of Art and Social Sciences, KNUST, Kumasi, Ghana, p. 297-311; ISBN: 978-9988-1-8513-8.
    56. Acheampong, A., Adom-Asamoah, M., Ayarkwa, J.  and Afrifa, R.O. (2013), Shear capacity of reinforced palm kernel shells concrete and normal weight concrete with and without shear reinforcement, In: Knum, R. K., Nani, G., Atepor, L., Assasie, O.R, Awere, E. and Bamfo-Adjei, E. (Eds.), Proceedings of 2nd Applied Research Conference in Africa (ARCA 2013), Kumasi, Ghana, pp. 135-150, ISBN 978-9988-1-7051-6. 
    57. Acheampong, A., Ayarkwa, J., Adom-Asamoah, M.and Baiden, B.K. (2013). Comparative Study of the Physical Properties of Palm Kernel Shells Concrete and Normal Weight Concrete. In Proceedings of the 2nd International Conference on Infrastructure Development in Africa (ICIDA), 17-19 March 2013, Johannesburg, South Africa, pp. 185-193, ISBN: 978-0-62054070-4. 
    58. Ayarkwa, J., Acheampong, A. and Agyekum, K. (2013). Residents Satisfaction with the Social Security and National Insurance Trust Housing in Ghana. In Proceedings of the 2nd International Conference on Infrastructure Development in Africa (ICIDA), 17-19 March 2013, Johannesburg, South Africa, pp. 202-212, ISBN:978-0-620-54070-4. 
    59. Ayarkwa, J., Baiden, B.K., Osei-Asibey, D. and Sabah, C.B.S. (2013). Benefits Derived by
    60. District Assemblies from their Project Consultants. In Proceedings of the 2nd International Conference on Infrastructure Development in Africa (ICIDA), 17-19 March 2013, Johannesburg, South Africa, pp. 194-201, ISBN:978-0-620-54070-4. 
    61. Ayarkwa, J., Baiden, B.K.and Sabah, C.B.S. (2013). Performance of District Assemblies’ consultants on common fund projects. In Proceedings of the 2nd International Conference on Infrastructure Development in Africa (ICIDA), 17-19 March 2013, Johannesburg, South Africa, pp. 375-386, ISBN: 978-0-620-54070-4. 
    62. Agyekum, K., Ayarkwa, J. and Adjei-Kumi, T. (2013). Minimizing materials wastage inconstruction- a lean construction approach. In Proceedings of the 2nd International Conference on Infrastructure Development in Africa (ICIDA), 17-19 March 2013, Johannesburg, South Africa, pp. 444-461, ISBN: 978-0-620-54070-4. 
    63. Orgen, N.K., Ahadzie, D.K., Ayarkwa, J. and Badu, E. (2013). Contextualizing the methodology for developing a collaborative working framework for improving construction design service delivery in Ghana. In: Laryea, S. and Agyapong, S. (Eds) Procs 5th West African Built Environment Research (WABER) Conference August 12-14, 2013, Accra, Ghana, p. 307319. 
    64. Orgen, N.K., Ahadzie, D.K., Ayarkwa, J. and Badu, E. (2013). Conceptual Models for Assessing Adversarial Business Relationship and Improvement of Engineering and Design   Service Delivery (EDSD) in Ghana. In Proceedings of the 2nd International Conference on Infrastructure Development in Africa (ICIDA), 17-19 March 2013, Johannesburg, South Africa, pp. 59-69. ISBN: 978-0-620-54070-4. 
    65. Orgen, N.K., Ahadzie, D.K., Ayarkwa, J. and Badu, E. (2012). An integrated supply chain relationship management theoretical framework for improving engineering and design service delivery (EDSD) to building contractors in Ghana. In: Laryea, S., Agyepong, S.A., Leiringer, R. and Hughes, W. (Eds) Proc. West Africa Built Environment Research (WABER)Conference, 24-26 July 2012, Abuja, Nigeria, 1-7. 
    66. Ayarkwa, J. and Agyekum, K. (2012). Consultants’ Perspectives on Materials Waste Reduction in Ghana. In: Badu, E., Dinye, R., Ahadzie, D. and Owusu-Manu, D. (Eds) Procs. of 1st International Conference on Infrastructural Development in Africa, Kumasi, Ghana, 24-26th March 2012. pp. 684-697. ISSN:2026-6650 
    67. Ayarkwa, J., Agyekum, K. and Acheampong, A. (2012). Ghanaian Construction Professionals’ Perception on Challenges to Female Retention in the Construction Industry. In: Badu, E., Dinye, R., Ahadzie, D. and Owusu-Manu, D. (Eds) Procs. of 1st International Conference on Infrastructural Development in Africa, Kumasi, Ghana, 24-26th March 2012. pp. 653-668. ISSN: 2026-6650 
    68. Orgen, N.K., Ahadzie, D.K., Ayarkwa, J. and Badu, E. (2012). Adversarial Relationship in Construction Engineering and Design Services Delivery: Discords, Disputes and Conflicts. In: Badu, E., Dinye, R., Ahadzie, D. and Owusu-Manu, D. (Eds) Procs. of 1st International Conference on Infrastructural Development in Africa, Kumasi, Ghana, 24-26th March 2012. pp. 138-156. ISSN: 2026-6650 
    69. Ayarkwa, J., K. Agyekum and E. Adinyira (2011). Barriers to Sustainable Implementation of Lean Construction in the Ghanaian Building Industry. ASOCSA 2011, July31-Aug, 4, 2011, pp. 67-83, Johannesburg, SA. pp. 37-54. ISBN: 978-0-86970-713-5. 
    70. Ayarkwa, J., K. Agyekum and E. Adinyira (2011). Perspectives for the implementation of Lean Construction in the Ghanaian Construction Industry ASOCSA 2011, July 31-Aug. 4, 2011, Johannesburg, SA. pp. 37-54. ISBN: 978-0-86970-713-5   
    71. Ayarkwa, J., K. Agyekum and E. Adinyira (2011). Exploring Waste Minimization Measures in the Ghanaian Construction Industry. In: Laryea, S., Leiringer, R. and Hughes, W. (Eds) Proc. West Africa Built Environment Research (WABER) Conference, 19-21 July 2011, Accra, Ghana, 443-452. 
    72. Ayarkwa, J., E. Adinyira and K. Agyekum (2011). Industrial Training in Ghana: Perceptions of the undergraduate construction student. In: Laryea, S., Leiringer, R. and Hughes, W. (Eds) Proc. West Africa Built Environment Research (WABER) Conference, 19-21 July 2011, Accra, Ghana, 617-627.
    73. Adinyira, E. and J. Ayarkwa (2011) Logical selection of suitable water types of private operators for the rural water sector of Ghana. ICoPFM 2011 International Conference on Project and Facilities Management, 18 -19 May 2011 at University of Malaya, Kuala Lumpur, Malaysia. PM-15.            
    74. Orgen, N.K., Ahadzie, D.K., Ayarkwa, J. and Badu, E. (2011) An integrated relationship and supply chain management framework for improving engineering and design service delivery to building contractors in Ghana. In: Laryea, S., Leiringer, R. and Hughes, W. (Eds) Proc. West Africa Built Environment Research (WABER) Conference, 19-21 July 2011, Accra, Ghana, 119129. 
    75. Ayarkwa, J., Ayirebi Dansoh and Amoah, P. (2010). Barriers to implementation of EMS in construction industry in Ghana. In Proceedings: 1st Postgraduate Research Conference on the Built Environment. Faculty of Architecture and Building Technology, KNUST, Kumasi, 3-4 June, 2010.
    76. Ayarkwa, J. and Ayirebi Dansoh (2010) Introducing construction site environmental impact into building technology education in Ghana. In Proceedings: 1st Postgraduate Research Conference on the Built Environment. Faculty of Architecture and Building Technology, KNUST, Kumasi, 3-4 June, 2010.  
    77. Ayarkwa, J., Ayirebi-Dansoh and Agyekum, K. (2010) Minimizing Environmental Impact of Construction in Ghana. In Proceedings: Third International Conference on Research and Development, November, 24-25, 2010, Accra, Ghana
    78. Ayarkwa, J., Ayirebi Dansoh and Amoah, P. (2010). Barriers to implementation of EMS in construction industry in Ghana. In Proceedings: Fourth International Conference on Scientific and Industrial Studies, April 14 – 15, 2010, Abuja, Nigeria. 
    79. Ayarkwa, J. (2002) Monitoring acoustic emission to predict ultimate tensile strength of finger jointed tropical African hardwoods.  In Proc. 7th World Conference on Timber Engineering, WCTE 2002. August 12-15, 2002, Shah Alam, Malaysia 
    80. Ayarkwa, J., Hirashima, Y., Ando, K. and Sasaki, Y. (2001). Comparing effectiveness of three acoustic emission procedures for predicting strengths of finger-joints from tropical African hardwoods.  In Proc. 5th International Conference on Structural Engineering Analysis and Modelling (SEAM 5), Accra, 26-28th Feb., 2002.  
    81. Ayarkwa, J., Hirashima, Y. and Sasaki, Y. (2000). Effect of wood density, finger geometry and end pressure on the efficiency of finger-joints from tropical African hardwoods. In Proc. 50th Annual Meeting of the Japan Wood Research Society, Kyoto, Japan. April 3-4, 2000. 
    82. Ayarkwa, J., Hirashima, Y., Sasaki, Y., and Ando, K. (2000). Influence of glue on     structural of finger-joints from tropical African hardwoods. In Proc. 50th Annual Meeting of the Japan Wood Research Society, Kyoto, Japan. April 3-4, 2000. 
    83. Ayarkwa, J. (1993). Characterization of bending modulus of elasticity of tropical timber beams and the influence of shear stresses. Proceedings of SEAM-3 Conference, Vol. ll, UST, Kumasi, July 1993.    
    84. Ayarkwa, J. (1993) Determination of mechanical properties of tropical timbers in structural sizes. Proceedings of SEAM-3 Conference, Vol. ll, UST, Kumasi, July 1993. 
    85. Addae-Mensah, A. G. and Ayarkwa J. (1992). The Use of Timber Poles for Low Cost housing in Ghana. In: Proc. of the International Conference on Wood Poles and Piles. Fort Collins, Colorado, USA, April 1992. 
    86. Ayarkwa, J (2002). The use of timber for building healthy and affordable houses in Ghana – The past, present and future. Paper presented at symposium on Affordable Housing for Improved Health. Organized by the CSIR on the occasion of the Day of Scientific Renaissance of Africa, Kumasi, July 5, 2002 
    87. Ayarkwa, J., Agyeman, V.K. and Owusu, F.W. (2001). Increasing the use of lesser-used timber species for furniture and wood products manufacture in Ghana. Paper presented at Seminar for Furniture and Wood Producers at Mini-Gifex 2001, Kumasi, 21-30 November, 2001. 
    88. Ayarkwa, J. (1997). The need to use pink star species for furniture and construction in Ghana. Paper Presented at TEDB Corporate Day “Meeting with Wood Users”, INDUTECH’ 97, Trade Fair Site, La Accra, 7 March 1997.  
    89. Ayarkwa, J. (1997). Standardized doors and windows for wood waste reduction in construction in Ghana. Presented at Workshop on Standardization of Wood and Wood Products in Furniture and Construction. Organized by the Ghana Forestry Commission, TEDB, FPIB and Ghana Standard Board. WITC, Akyawkrom-Kumasi, July 31-Aug.1, 1997.  
    90. Ayarkwa, J. (1997). Standardized wall panels - An answer to wood waste reduction and cost optimization in timber-framed building construction in Ghana. Presented at Workshop on Standardization of Wood and Wood Products in Furniture and Construction. Organized by Ghana Forestry Commission, TEDB, FPIB and Ghana Standard Board. WITC, Akyawkrom Kumasi, July 31-Aug.1, 1997. 
    91. Ayarkwa, J. and Addae-Mensah, A.G (1997). Lesser-used species as alternative to over-used traditional species in furniture and construction in Ghana. Presented at Workshop on Standardization of Wood and Wood Products in Furniture and Construction. Organized by Ghana Forestry Commission, TEDB, FPIB and Ghana Standard Board. WITC, Akyawkrom Kumasi, July 31-Aug.1, 1997.  
    92. Ayarkwa, J. (1997). Biodiversity and the use of wood in human settlements. Presented at CSIR Symposium on Day of Scientific Renaissance of Africa. CNC, Kumasi. 
    93. Ayarkwa, J. (1997). Working properties and processing characteristics of some lesser-used species. Presented at ITTO Project Training Workshops on Furniture and other Wood Products, TEDB, Takoradi, 12-15 Aug., 1997. 
    94. Ayarkwa, J. (1997). Influence of some basic wood properties on wood machining processes. Presented at UNDP/AGI Training and Demonstration Workshops on Technology Awareness and Knock-Down Furniture, FORIG, Kumasi, 4-19 January, 1997. 
    95. Ayarkwa, J. (1997). Machining characteristics of some new marketable lesser-used species. Presented at UNDP/AGI Training and Demonstration Workshops on Technology Awareness and Knock-down Furniture, FORIG, Kumasi, 4-19 January, 1997. 
    96. Ayarkwa, J. (1997). Principles of furniture design and dimensioning. Presented at UNDP/AGI Training and Demonstration Workshops on Technology Awareness and Knockdown Furniture, FORIG, Kumasi, 4-19 January, 1997. 
    97. Ayarkwa, J. (1997). Introduction to knock-down furniture production- case study of the Ghana Collection. Presented at UNDP/AGI Training and Demonstration Workshops on Technology Awareness and Knock-Down Furniture, FORIG, Kumasi, 4-19 January, 1997. 
    98. Ayarkwa, J. (1997). Introduction to the use of wooden dowels in knock-down furniture manufacture. Presented at UNDP/AGI Training and Demonstration Workshops on Technology Awareness and knock-down Furniture, FORIG, Kumasi, 4-19 January, 1997.
    99. Ayarkwa, J. (1997). Some quality control considerations in knock-down furniture manufacture. Presented at UNDP/AGI Training and Demonstration Workshops on Technology Awareness and Knock-down Furniture, FORIG, Kumasi, 4-19 January, 1997.
    100. Ayarkwa, J. (1996). Affordable housing in Ghana: FORIG’s Perspective Presented at Symposium on “Affordable Housing in Ghana: The Perspective”. Organized by RSA (CSIR) and the Association of Recognized Professional Bodies (ARPB), STEPRI, Accra, Sept. 11, 1996. 

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