Abstract We investigate the properties of globular clusters (GCs) in a galaxy cluster, using particle tagging method with semianalytical approach cosmological context. assume GCs form from dark matter halo mergers and their metallicity is assigned based on stellar mass host halos formation redshift GCs. Dynamical evolution disruption are considered approaches, controlled by several free paramet...

the cluster representation matrices have already been successfully used to enumerate close-packed vacancy clusters in all single-lattice crystals [i, 2]. point defect clusters in double-lattice crystals may have identical geometry but are distinct due to unique atomic postions enclosing them. the method of representation matrices is extended to make it applicable to represent and enumerate the ...

To obtain the best quality and quantity of pistachio fruits, knowing the most suitable time of pollination, is of paramount importance. This study was conducted to investigate the effect of pollination time, different stages of female flower development, including A (lower florets opened and clusters were green), B (lower and medial florets opened and clusters were green), C (all florets opened...

bibliometric, and scientometric approaches are used to provide appropriate tools for evaluating scientific products at local, national, and international levels. iran, the same as other countries, has many universities and research centers in the field of engineering that iran's most of the scientific products account for the field of engineering. this study is a descriptive approach using scie...

business clusters are known as a  new model of economic development throughout the world. in recent years, this model has also been noted by policy-makers in iran. accordingly, the present study aimed at proposing a model for sustainable development of business clusters in iran based on experience in this regard. a qualitative strategy (case study) is used as the research method. additionally, ...

using the cluster approach aims to increase cooperation in the competition to small and medium units, the use of knowledge and innovation was emphasized and more attention. this study compares the innovation performance with the mediation of knowledge management in industrial clusters rubber parts rosen and rubber parts manufacturing companies that formed clusters have left the hamedan province...

for the past 3 decades, creating industrial clusters have been considered as an approach for the development of most small and medium enterprises. the goal of this programme is that all small and medium enterprises locating in a certain geoghraphic area can concentrate on cluster approach to collaborate in market research, production design, training and other activities that are not economical...