The construction industry of Estonia has experienced a period of economic growth which has started to turn down for now and the output forecasts state that this recess will continue. While the availability of unskilled workforce will be growing, the lack of high quality skills in the labour market is becoming even more acute when, after joining EU, skilled construction craftsmen have a choice o...

Introduction Groundwater supply sustainable yield is herein defined as how much water can be withdrawn from an aquifer system, where and for how long, with acceptable physical, economical, environmental, social, cultural, institutional, and legal consequences. The purpose of this Technical Commentary is to focus on the following technical aspects of groundwater supply sustainable yield that are...

This paper summarizes the intermediate lessons learned from the analyses of the risk management problems in three technological endeavors. These problems are: the absence of a structure for rewarding successful project risk management; the need for an ever-more accurate economic measure of risk; and the difficulty of transferring risks to contract-bound independent outsourcing entity. This pape...

As part of the global efforts to make aviation activities more environmentally friendly, worldwide goal is achieve a 50% reduction in 2005 emissions by 2050. In this context, represent critical challenge activities, especially with increasing travel demand up beginning COVID-19 crisis, starting 2020. One potential drivers that would help industry reduce its use sustainable fuel (SAF). study, we...

the performance of many traffic control strategies depends on how much the traffic flow models are accurately calibrated. one of the most applicable traffic flow model in traffic control and management is lwr or metanet model. practically, key parameters in lwr model, including free flow speed and critical density, are parameterized using flow and speed measurements gathered by inductive loop d...

Participatory approaches to natural resource management and development are widely accepted as effective instruments for achieving sustainable forest management (SFM) particularly in the developing countries. However, local people live within and adjacent to the forest resources and are dependent on the forest in terms of their livelihoods may prevent turning some decisions, intended as a compo...

sustainable coastal fishing management includes different components and factors. one of the practical initiatives to achieve sustainability is to evaluate or measure different criteria of sustainability and measuring sustainability of each system needs its own indicators. this study aimed to investigate different criteria of sustainable coastal fishing management in beach seine cooperatives (b...