renewable natural resources are the wealth that not only belongs to the currentgeneration but also to future generations. diversity in rangeland user viewpoints and policymakers has caused these lands to face some damages. this study was conducted to compareviewpoints of ordinary members as rangeland users, and board of directors as executives ofmanagement plans. statistical population of the s...

Construction projects undergo critical stages resulting to circumstances with high uncertainty and risk, which has been escalated by the pandemic. As pandemic continues overwhelm world, its negative effects construction industry are clearly manifested. Health safety risks in previous studies researchers not risk factors that great impact industry. However, COVID-19 significantly increases needs...

In this study the challenges of managing the civil projects in oil and gas industry over recent years that failed were investigated. For this purpose, the relevant cases and their effectiveness were categorized by analyzing research data obtained from the questionnaire results. The results obtained from the research showed that there is a positive and significant relationship between the projec...