aerosol formation due to ions in the atmosphere is not well understood, although it seems to play an important role in cloud formation. the ions in the atmosphere can enhance cloud formation and can increase nucleation as well as impeding the evaporation from the surfaces of the droplets. recently there has been some experimental work to find the relation between ions concentrations and cloud i...

Cloud computing is a recent computing paradigm that represents a fundamental change of information commu- nication technology (ICT) services and Cloud services continue to grow rapidly with increasing functionality and more users. As a result of this growth, it is a critical issue to select a suitable Cloud service which meets all the business strategies and the objectives of firms. This paper ...

The need for calculating actions has been emerged everywhere and in any time, by advancing of information technology. Cloud computing is the latest response to such needs. Prominent popularity has recently been created for Cloud computing systems. Increasing cloud efficiency is an important subject of consideration. Heterogeneity and diversity among different resources and requests of users in ...

because of the role of climate parameters in climate change and improve the efficiency of climate and rainfall prediction models, the study of these parameters are very important in the world. the study of clouds have special important, because the clouds make connection between the synoptic patters and surface climate conditions and any change in its properties, can start a chain reaction in o...

the electrocatalytic oxidation of captopril (cap) was studied by modified carbon nanotubes paste electrode in the presence of isoproterenol (ispt) using cyclic voltammetry (cv), chronoamperometry and square wave voltammetry (swv). also, the values of catalytic rate constant (k), and electron transfer coefficient (α) for cap were calculated. the mechanism of ca electrochemical behavior at the mo...

different recovery mechanisms are activated during the production from reservoirs. wells sometimes are kept with the injection. therefore the evaluation of injection indices depended on material injection, seems to be necessary. this study is going to determine the drive indices for a reservoir by making a model using eclipse. the model consists a gas cap and aquifer, in which there is an injec...

one of the most dazzling events in the atmosphere is lightning. during updrafts in the life cycle of cumulus clouds, collision of graupels and ice crystals in the presence of liquid water results in vertical separation of electrical charges and lightning. there are four types of lightening depending on the location of discharge. the first type is cloud-to-ground lightning or fork lightning that...

Cloud computing is a recent computing paradigm that represents a fundamental change of information commu- nication technology (ICT) services and Cloud services continue to grow rapidly with increasing functionality and more users. As a result of this growth, it is a critical issue to select a suitable Cloud service which meets all the business strategies and the objectives of firms. This paper ...

Cloud computing has become an attractive target for attackers as the mainstream technologies in the cloud, such as the virtualization and multitenancy, permit multiple users to utilize the same physical resource, thereby posing the so-called problem of internal facing security. Moreover, the traditional network-based intrusion detection systems (IDSs) are ineffective to be deployed in the cloud...