During the past decade we have witnessed a tumultuous debate over the disease risks posed by microbes that inhabit metalworking fluid (MWF) systems. Not infrequently, that debate has occurred in the absence of satisfactory data. This paper addresses the author’s perspective on what types of data are needed in order to assess the actual disease risks posed by MWF microbes. The approach must be m...

The present study investigates how working memory and fluid intelligence are related in young children and how these links develop over time. The major aim is to determine which aspect of the working memory system – short-term storage or cognitive control drives the relationship with fluid intelligence. A sample of 119 children was followed from kindergarten to second grade and completed multip...

the shape of a solar collector is an important factor in solar-to-thermal energy conversion. conical shape is one of the stationary and symmetric shapes that can be employed as a solar water heater. flow rate of working fluid on the solar collector has an important effect on the efficiency of the collector. the present study is an experimentally investigated of the performance of the solar coni...

in this paper, the fluid-structure interaction phenomenon and the research history are described. then due to the complex and specific working conditions of a turbine blade, we have investigated the phenomenon on this subject. the fluid-structure interaction on a turbine blade model has been simulated by using structural and fluid flow section of ansys software. a model of turbine blade with ai...

The enhancement of the thermal performance of Vacuum Tube Solar Collectors (VTSC) was studied by using alumina nanofluid as working fluid. VTSC is a simple and commonly utilized type of collector. This study established the heat transfer experimental model of all glass VTSCs used in a forced-circulation solar water heating system using alumina nanofluid as base fluid. Al2O3 (with an average par...

* 0-7803-7952-7/03/$17.00  2003 IEEE. Abstract Multi-dimension Workflow net (MWF-net) [1], which includes process, organization, and resource perspectives, is introduced. Using the structure analysis of the TWF-net in the process perspective and the perspectives mapping, the routing of transaction instances in the multi-TWF-nets can be projected into the flow of transaction instance between di...

The use of software is an integral part of any organization. Software applications, including web applications, must evolve quickly. By dividing a web application into independent components, we are developing a framework that gives developers a set of generic functionalities which can be integrated to fulfill specific requirements. Our research involves both developing the framework and compar...

One of the aims of model checking is to confirm a system’s safety properties. Safety properties state that undesirable events never occur. This paper describes a method that derives comprehensive and rigorous safety properties for model checking. In general, an undesirable event in a system is abstract, and so safety properties corresponding to undesirable events cannot be directly applied to m...