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Abstract

Outbound logistics channels are of crucial importance for an efficient construction materials logistics management and impacts on customer satisfaction. However, there is limited knowledge of the outbound logistics channels for construction material in Nigeria. This study aims to identify and examine the current outbound logistics channels used by the Nigerian construction material manufacturing industries. A quantitative research method using a case study approach was adopted in this research. The purposive sampling technique was chosen, where six construction material manufactured and distributed within five states capital and Abuja in the North-central region of Nigeria were selected for this study. A research instrument was developed and used in conjunction with an observation protocol in the form of a template. The data were collected through observations, direct measurement onsite and archival records of transactions. A descriptive method of data analysis was employed to analyse the data. Our findings indicate that there exist six alternative outbound logistics channels that can be used separately or in combination with each other to deliver materials to end users. The study concludes that the research finding provides a potential knowledge and understanding of the manufacturers’ outbound logistics channels that can be used at the start of a project to accomplish effective planning and delivery of the whole project. The study also established the average transportation cost per average ton and average transportation cost per average distance driven for construction material delivery. This information can be used for construction material transportation management.

Abstract

This paper presents changes observed in the green areas in the city of Sopot. Analyses of Sopot archival materials, both cartographic and graphic, provided grounds for an assessment of changes and transformations in that respect starting from the 19th century. These analyses covered all the spa town protection zones A, B and C. This study also focuses on the aspect related with the primary function served by the spa town within the city. The city was also investigated in terms of the considerable cultural value frequently associated with green areas, since Sopot is an architectural gem of historical value. The analysis empasised the positive effect of green areas on the health resort character of the city. Green areas in the spa town of Sopot were analysed applying the comparative method. For this purpose maps and city maps were investigated. Additionally, the study is also based on archival graphic materials collected from the dawnysopot.pl website, as well as recent field studies (Świeczkowska, 2017).

Abstract

Innovation is at the core of micro, small and medium enterprises (MSMEs)/construction micro, small, and medium enterprises (CMSMEs) world over. Be that as it may, the overwhelming sorts of innovation among enduring and effective CMSMEs, and the effects of such innovation(s) on the achievement of the CMSMEs is hazy. The purpose of this paper is to investigate the transcendent sorts of innovation among the successful construction micro, small, and medium enterprises. The examination utilized subjective research technique to exploratively decide the sorts of innovations. Recorded interviews comprised the exploration of information from 43 CMSMEs through 14 states out of the 19 states constituting northern Nigeria. While a semi-structured interview with open-ended questions was utilized to gather information through judgmental and snowballing examining procedure at stage 1 and 2 individually. Information was transcribe interpreted, open and axial codes examined and interpreted. The outcome uncover product innovation as the main type of innovation among different types of innovation and generally in charge of the accomplishment of the CMSMEs considered. The investigation improves the collection of learning regarding basic types of innovations within CMSMEs and proposes that effective CMSMEs give more consideration to product innovation to trigger their prosperity and different types of innovation. Moreover, the aftereffect of the examination proposed failing CMSMEs can endure when they focus on product innovation.

Abstract

Few empirical studies have previously reported on the implementation of takt planning and utilizing Deming cycles (PDCA) to control construction workflows continuously. This paper presents a case study from the offshore renewable industry, closely related to construction. The paper aims to develop and evaluate a conceptual model combining takt planning and the Deming cycle within the offshore wind construction environment. The conceptual model has through interactions with construction experts been modified for a visual board implementation, covering two alternative processes with a fixed number of technicians per performing team. The knowledge base for the conceptual model is based on Takt planning implementation from the lean construction community and PDCA implementation from the lean production community. The main contribution of this paper is the development and evaluation of the conceptual model combining takt planning and the Deming cycle in a construction environment. This conceptual model has potential implications in the construction and refurbishment industry.

Abstract

Studies have shown that project risks are responsible for the failure of most Public Private Partnership (PPP) projects. The study examined the critical risk factors associated with PPP housing projects. Data for the research was obtained through a questionnaire. The data were analysed using descriptive statistics and mean ratings. Corruption and bribery among contracting parties (0.681), Exchange rate volatility (0.621) Availability of development funds (0.599) and Change in government (0.580) were the critical risk factors identified. The study also indicated that project cost is highly influenced by lack of development funds and changes in interest rates. The quality of PPP housing projects in Abuja was found to be influenced by partner selection risks. The study suggested a competitive, transparent, and efficient bid process to eliminate corruption, workable strategies for ensuring the availability of development funds at a cheaper rate and adopting mixed strategy in which government continues to provide social housing to the low-income class while providing the enabling environment for the private sector to thrive.

Abstract

This article presents the results of a durability test of a prototype low-pulsation pump. Hydraulic measurements conducted during the test enabled visualisation of the behaviour of the unit in working conditions. The test was conducted according to a strict factory standard, which states that pump performance parameters cannot decrease by more than 8% during durability testing. The material presented in this publication is the result of a study within the project entitled The development of innovative gear pumps with a reduced level of acoustic emission. The solution developed as part of the project has been successfully implemented for a series of gear pumps consisting of twenty-two units. Among other awards, the product won the Gold Medal at the 10th International Fair of Pneumatics, Hydraulics, Drives and Controls, Kielce 2017.

Abstract

Although success is a word that encapsulates a general and wide idea and it is challenging to provide a definite and a consensus definition from all individuals concerned, for many years, there has been a growing interest in identification of the success factors and the relationship with project success. In this research, the main objective investigates the relationship between top management, project mission, personnel, communication and Schedule/Plan and project success in construction industry in Malaysia. A survey was conducted among Managers and Employees of construction companies registered with Construction Industry Development Board (CIDB) of Malaysia and the correlation and regression analysis was carried out in order to test the hypotheses of the study. Key areas are now offered that practitioners and academics should further explore to contribute to the knowledge body on project success and to explore in more details which factors affect project success in construction industry in Malaysia.

Abstract

Selected districts of Valencia and the gradual transformation of their image are presented in this article. The formulation of an appropriate strategy of action and the effect of an example that were initiated by the construction of the City of Arts and Sciences have broken through the stagnation in thinking about space. Revitalisation efforts have been initiated in many of the city’s districts, as well as in its suburban zone. The great explosion of ideas and emotions also carried over to enhancing the historical traditions of the city and the holistic, multi-directional approach to the subject matter of renewal, providing the city with economic stimulation. The author’s own analyses presented in the article pertain to: Ciudad de las Artes y las Ciencias (City of Arts and Sciences), the new development of the Poblats Maritims coastal district, the Ciutat Fallera district and the Orba district of the town of Alfafar, located in Valencia’s metropolitan area. Various proposals for transforming the spatial structure of these districts point to the possibility of conducting an experimental hybrid policy intended to reconcile economic rescaling, entrepreneurship and cultural regionalism in the planned landscape.

Abstract

In this article a new version of the ant colony optimisation algorithm with a desirability function for the triple matching problem is described. The problem is modelled by means of two 2-dimensional arrays. The new version of the ant algorithm was compared with the previous version of the ant algorithm and tested for different values of ant algorithm parameters; the results of these tests are presented and discussed.

Abstract

Gap of building production management (BPM) is a serious issue that influences project success and building construction firms’ (BCFs) performance. Hence, the call for BCFs performance improvement using a new production model approach is a necessity. The aim of this study is to investigate the role of the new production model concept as a method for enhancing the performance of BCFs through addressing the gap of BPM in Nigeria. To attain this aim, a research procedure was designed to achieve two objectives which include: (i) exploring the nature of Nigerian construction industry, gap of BPM and new production model concept; (ii) investigating the awareness and application of the new production model concept as a method for enhancing the performance of BCFs in the study area. To accomplish the aforementioned aim, a research method comprised of a literature review and questionnaire surveys was designed to address the objectives. The study identified unproductive/ineffective BPM, lack of buildability and maintainability analysis, professionalism mismatch, and unauthorized practices as the gap of BPM. This study revealed that the gap of BPM is the main reason behind building failures/collapses, bad debts, low productivity, low level of clients satisfaction, high labour turnovers, and barriers to economic fortune. The study also revealed poor cash flow, lack of experience in the construction field, unprofessionalism and a high number of unskilled employees in a company, lack of co-operation from subcontractors and suppliers and poor labour relations, as the top five causes of BPM gap. BCFs in Nigeria have adopted several approaches to arrest these issues, but the challenges still occur. Thus, the new production model concept that has not been well adopted by construction firms in Nigeria, and which emphasizes on-site production, and aims at enhancing production management is a key to tackling these issues. Based on the survey findings, the study recommended that the issue of the gap of BPM must be correctly identified and clearly understood so as to enable BCFs to bridge the production management gap which will influence their performance positively.