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Abstract

This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants.

This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants.

Abstract

The intent of this article is to explore a mathematically sound method to graphically monitor schedule performance index (SPI) such that it enables the project manager to take objective data based decisions regarding the progress of the project schedule. The article aims to leverage the theory and application of control charts, specifically the U chart and Laney U chart and test its applicability to earned value management by trending schedule performance index on a time series chart. Off the shelf software, MinitabTM was used to generate the control charts based on earned value and planned value. While this paper proves that the Laney U chart, with correct interpretation, acts as an effective trigger-based tool for schedule risk management, it also generates further avenues for research into similar use of control charts for cost performance and other quality indices.

Abstract

The following article is intended to discuss the issues concerning the introduction of passive measures aimed at improving solar protection in multi-family buildings. A system of classifying these methods into two groups of solutions (architectural and material-building) was applied. The first group includes issues concerning facade design, the spatial features of which (such as loggias, balconies and other overhangs) can be treated as one of the solar protection methods. The authors’ own studies are presented and expressed in a sequence of formulas. The formulas enable assessment of the effectiveness of the above elements, depending on external conditions. As far as the second group is concerned, material-construction solutions for building facades and roofs are discussed. The solutions mentioned include solar-control glazing, spatial shading elements (such as venetian blinds, roller blinds), roof and façade vegetation, and the thermal mass of the building. The essence of the functioning of the analysed solutions in relation to the characteristic functional specificity of multi-family buildings is discussed. Problematic areas of application of the above methods are indicated. As shown in the study, problematic areas may include a group of utilitarian-operating, economic and aesthetic issues, in the case of which the use of passive solutions encounters limitations. In conclusion, the possibilities for alleviating these limitations are highlighted. The authors’ own solutions presented in the following paper can contribute to energy savings and may thus prove beneficial for environmental reasons, thereby serving the aims of sustainable development.

Abstract

The main purpose of this study was to investigate how leadership skills and stakeholder management acting together to influence the execution of fibre optic infrastructure. The study adopted the pragmatism research paradigm, with a cross-sectional survey design. Census was used to select 187 respondents from a target population of 187 functional members of staff in fibre optic infrastructure departments of two mobile telecommunication and four internet service companies in Nairobi County, Kenya. A self-administered structured questionnaire was used to collect quantitative data while an interview guide and document review guide were used to collect qualitative data. Inferential statistical analysis was performed using multiple regression. It was demonstrated that leadership skills and stakeholder management act together to have a significant positive influence on the execution of fibre optic infrastructure. Therefore, there is a need for companies to ensure that stakeholders are involved in all phases of a project from inception to closure. Mobile telecommunication and internet service providing companies should also develop training programs to improve the leadership skills of project leaders and make use of conflict management strategies and communication skills to ensure appropriate management of change. It was suggested that similar and comparable studies should be conducted in other countries across the world.

Abstract

Public private partnership projects have been adjudged to contain more risks than traditionally procured projects due to more number of parties involved and their varying interests. These risks affect the achievement of projects objectives and therefore need to be identified and treated to guarantee project success. This paper developed a life cycle framework for managing risks in PPP housing projects in Nigeria. The respondents were selected using purposeful sampling technique. The data used for the study were obtained through semi-structured questionnaire and were analysed using mean rating. Risk transfer was found to be the widely used measure for responding to risks in PPP housing projects. The criteria mostly used for risk allocation were party with the best ability to manage specific risks should they occur and ability of the party to foresee risks. A four-stage life cycle framework was developed, evaluated and validated by experts in the built environment to ascertain its reliability. The framework is recommended for PPP housing projects in Nigeria.

Abstract

This paper presents a review of modern modelling of porous materials such as metal-organic frameworks used in catalysis. The authors’ own research approach using the nano-design of metal-organic frameworks is included in this review.

Abstract

The paper investigates whether time and doses of powder activated carbon (PAC) effect adsorption rates of organic contaminants from water and proposes a new model of volume adsorption. Depending on the nature of the organic compounds present in water, a general description of the adsorption process may require a linear combination of adsorption models running at different rates and at different parameters of adsorption isotherms. The model showed a good fit with the measured data and could be used in designing adsorption units at water or wastewater treatment plants. The proposed set of model equations enables to predict the effects of PAC adsorption in both plug flow reactors and homogeneous reactors.

Abstract

The quest for sustainable development and biodiversity protection leads to the creation of a new generation of urban parks where man allows natural plant succession, soil regeneration, and rainwater infiltration. New urban nature parks are also places for the promotion of social contacts and physical activity. They can be regarded as health-affirming places. The common features of urban parks presented in this paper can be seen in modern eco-neighbourhoods in France. Public parks of this new generation are planned for the centres of new eco-neighborhoods. These parks are being constructed in the first stages of development. Similar commonalities have been observed for eco-neighbourhoods around the world. The paper presents three examples of good practices: three new parks of this new generation in the eco-neighbourhoods of Paris.

Abstract

This article presents two examples of contemporary private religious spaces against the background of the small-town architecture of the typical, largely unknown town of Szécsény, Hungary, using projects by the Hungarian architect Csanády Gábor Mátyás, DLA, as an example. It discusses the ideas that defined the adaptive reuse of a former school, located in an existing complex adjacent to a monastery of the Order of St. Francis, which was converted into a social care home, and a chapel in the architect’s own house.

Abstract

Project manager’s skills which are the competencies required for successful completion of the project play an important role in the construction industry, therefore acquiring these skills is significant for project success. However, indigenous construction firms compete with their multinational counterparts for the available skilled workforce. The study, therefore, investigates the level of project managers’ skills acquisition in indigenous and multinational construction firms in Lagos State, Nigeria. The study adopted cross-sectional survey research and data were collected using a structured questionnaire. One hundred and thirty-three questionnaires (106 indigenous and 27 multinational) were administered to project managers and 106 retrieved and valid for analysis representing 73% response rate. The techniques for analysing the data are mean score and t-test. The study revealed that the most important skill type as perceived by project managers is a technical skill and there is no significant difference in the level of skill acquisition by project managers in indigenous and multinational construction firms. Hence, the study concludes that the categorisation of construction firms has no effect on the level of skills acquisition by project managers; therefore, it plays no role in project managers’ skills acquisition. Project managers should strive towards developing themselves through training for improved performance and for successful completion of construction projects.