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Cost overruns have been identified as the most significant challenge for construction sector stakeholders. Like many developing countries, the Iranian construction industry suffers from poor cost performance. So, the current research aims to investigate the causes of cost overrun in Iranian construction projects. This paper also reviews the findings of similar studies conducted in several Asian countries.

This paper includes a literature review and a quantitative method with a questionnaire survey. The review is limited to the studies investigating the causes of cost overrun in an Asian country in the last decade. Moreover, the current research was conducted through a questionnaire prepared based on 43 common factors identified through the literature review. The required data were gathered from the representatives involved in handling construction activities in Iran. The collected data were analyzed based on relative importance index (RII), using the SPSS software package.

The results showed that poor site management, improper planning, fluctuation of prices of materials, lack of experience, and poor economic condition are the critical reasons for cost overrun in Iranian construction projects. The findings also indicated that among the studies conducted in Asian countries, the first three factors have the highest frequency.

This paper highlighted most studies concerning the cost overrun factors in construction projects in different Asian countries in recent years. Up-to-date knowledge helps to understand the complexity of this field in various periods and therefore minimizes the risk of cost overrun. This research can also be used as a benchmark for further studies to clarify similar issues in other developing countries.

The purpose of this paper is to compare the job satisfaction levels between International Organization for Standardization (ISO) 9001-certified and non-ISO 9001-certified project-based companies in Jordan, for project managers (PMs) and project team members (consultants, engineers and architects).

The study sample consists of individuals from the aforementioned four roles of ISO 9001-certified and non-ISO 9001-certified companies. A questionnaire survey was used to collect the data from 57 companies. In total, 72 valid questionnaires were returned, yielding a response rate of 92.98 percent. The data obtained were statistically analyzed, and then the independent t-test was used to test the study hypotheses.

The results revealed that ISO 9001-certified companies experience higher job satisfaction level for the four roles compared to non-ISO 9001-certified companies. Between the two samples, it was noted that there is a significant difference in the PMs’, consultants’ and engineers’ satisfaction with co-workers and without any remarkable difference in the specific satisfaction. No significant difference between the two samples in general satisfaction was found for PMs and engineers. Finally, no significant difference was found in three satisfaction elements for architects.

Understanding the linkage between being ISO 9001-certified company and project members’ job satisfaction can provide a new strategic direction for project-based companies’ performance management that can help in achieving superior work outcomes. A small sample size is considered the main limitation of this study.

This study attempts to fill the knowledge gap that is rarely investigated in the literature, i.e. the link between being ISO 9001-certified company and the level of project members’ job satisfaction.

The construction industry activities play a key role in achieving socio-economic development and sustaining economic growth in many countries. Increased awareness about the role of human resource management in employee performance has led construction firms to evaluate and focus on high-performance work practices (HPWPs) components, which intend to cultivate employee and organizational performance. This study aims to explain HPWPs affect employee performances through the mediating influence of trust in management in Aqaba, Jordan.

A questionnaire survey was administered to collect data among the contractors Grade1 across Aqaba, Jordan. This research was designed as a quantitative study and data were collected at one point of time. In total, 311 questionnaires were returned and only 279 completed questionnaires to test the relationship between HPWPs and employee performances according to the ability, motivation and opportunity conceptualized framework. The partial least squares technique was adopted to test the proposed relationships.

The results present that extensive training, rewards based on performance and job security have a significant relationship with trust in management. Trust in management exerts partial mediation effects between HPWPs (extensive training, rewards based on performance and job security) and employee performance (creativity and innovation).

The findings of the study provide useful and original information to improve the overall performance of construction firms.

The purpose of this paper is to carry out a comprehensive review of some latest studies devoted to natural convection phenomenon in the enclosures because of its significant industrial applications.

Geometries of the enclosures have considerable influences on the heat transfer which will be important in energy consumption. The most useful geometries in engineering fields are treated in this literature, and their effects on the fluid flow and heat transfer are presented.

A great variety of geometries included with different physical and thermal boundary conditions, heat sources and fluid/nanofluid media are analyzed. Moreover, the results of different types of methods including experimental, analytical and numerical are obtained. Different natures of natural convection phenomenon including laminar, steady-state and transient, turbulent are covered. Overall, the present review enhances the insight of researchers into choosing the best geometry for thermal process.

A comprehensive review on the most practical geometries in the industrial application is performed.

The purpose of this paper is to demonstrate a successful fabrication of 2 × 128 linear array of typical infrared (IR) detectors made of p-type tSi/porous Si Schottky barrier.

Using metal-assisted chemical etching (MaCE) as a unique approach, a sample definition of a porous Si nanostructure region for fabricating of any high-density photodetectors array has been formulated. Besides, the uniformity of pixels at different position along the array has been confirmed by optical images and measurements of photocurrent in IR regime at room temperature.

The experimental result illustrates the existence of an open-circuit voltage up to 30 mV at 1.5-μm wavelength for an area of 50 × 50 μm2. Additionally, this behavior is almost the same at different pixels of fabricated array.

The uniformity of pixels and definition of nanostructure region are two most important challenges in fabrication of any high-density photodetectors array.

MaCE guarantees formation of reproducible, high-fidelity and controllable nanometer-size porous Si with well-defined and sharp edges of the patterned areas.

The proposed method offers a low-cost and simple process to fabricate high-density arrays of Schottky detectors which are compatible with the complementary metal-oxide semiconductor process.