abstract coontail (ceratophyllum demersum) and watermilfoil (myriophyllum spicatum) are current submersed weeds in many fresh waters of iran. the excessive growth of these plants causes the reduction in utilization of water resources and making some ecological and economical damages in these areas. the aim of this study was to determine the response of two submerged aquatic weeds of coontail an...

Group communication, providing virtual synchrony semantics, is a powerful paradigm for building distributed applications. For applications that require a large number of groups, signi cant performance gains can be attained if these groups share the resources required to provide virtual synchrony. A service that maps multiple user groups onto a small number of instances of a virtually synchronou...

We built a limited but successful user interface management system named HYPE which supports rapid interactive creation and organization of user interfaces for a large class of applications. HYPE is targeted at applications for which the user interface is only loosely coupled to the application. Examples of this class of application are ‘command line-driven’ programs. Many applications in this ...

The virtual synchrony model for group communication has proven to be a powerful paradigm for building distributed applications. In applications that use a large number of groups, signi cant performance gains can be attained if these groups share the resources required to provide virtual synchrony. A service that maps user groups onto instances of a virtually synchronous implementation is called...