Nucleate boiling heat transfer coefficients may be strongly reduced by scale formation, even for conditions where the bulk foulant concentration is well below the saturation concentration. Due to the mechanism of micro-layer evaporation, the local concentration at the heat transfer surface can be considerably increased, causing the formation of scale and changes in bubble frequency and bubble d...

The bubble effectiveness in liquid phase cylohexane non-catalytic oxidation process is discussed in this paper. Then the bubble effectiveness and a new proposed kinetic model are used in the mathematical model of the industrial reactor for the cyclohexane non-catalytic oxidation process. Furthermore, simulation and optimization based on this reactor model are carried out. The results of sim...

frothers havea profoundeffectonbubble size and also flotation efficiency. in present study the effect of type and dosage of frothers on the flotation response of coarse particles of quartz was investigated.  therefore, flotation response of coarse particles using frothers such as mibc, pine oil, poly propylene glycol with concentration of 0, 25, 50 and 75 g/t, was obtained respectively. for all...

We propose a new programmable concurrency control framework called speculative nondeterminism for real time, “open” and distributed agents. In this framework, dynamic and concurrent agent programs affect each other through a centralized store which represents shared resources. Our framework has novel programming constructs which allows an agent to speculate against the future by multiple exclus...

Data dependencies between instructions greatly impede instruction-level parallelism. Recently two hardware techniques – Value Prediction and Value Reuse – have been proposed to overcome the limits imposed by data dependencies. We introduce a new hardware scheme for exploiting speculative value reuse by using value prediction. We propose a new microarchitecture which uses value prediction to pro...

the bubble effectiveness in liquid phase cylohexane non-catalytic oxidation process is discussed in this paper. then the bubble effectiveness and a new proposed kinetic model are used in the mathematical model of the industrial reactor for the cyclohexane non-catalytic oxidation process. furthermore, simulation and optimization based on this reactor model are carried out. the results of simulat...

Evidence that cryptocurrencies exhibit speculative bubble behavior is well documented. This evidence could trigger global financial instability leading to systemic risk. It therefore crucial quantify risk and investigate its transmission mechanism across crypto markets other markets. We can accomplish this using the so-called multivariate conditional value-at-risk (MCoVaR), which measures tail ...

We explore how information additional to a specific price series can be used improve the power of popular univariate autoregressive-based methods for detecting and dating speculative bubble episodes. Following Phillips et al. (2011, 2015) we base our approach on sequences sub-sample regression-based augmented Dickey–Fuller [ADF] statistics. Our point departure from these extant procedures is al...

Speculative design is an emerging rhetorical strategy in design practices and research to raise public awareness in social agendas that have been little explored. As a stream of this type of research, we propose speculative visualization that aims to achieve speculative design by utilizing techniques from data visualization and graphic design. Specifically, speculative visualization represents ...

We present an in-kernel disk prefetcher which uses speculative execution to determine what data an application is likely to require in the near future. By placing our design within the operating system, we provide several benefits compared to the previous application-level design. Not only is our system easier to implement and deploy, but by handling page faults as well as traditional file-acce...