Recently the cloud computing paradigm has been receiving significant excitement and attention in the media and blogosphere. To some, cloud computing seems to be little more than a marketing umbrella, encompassing topics such as distributed computing, grid computing, utility computing, and softwareas-a-service, that have already received significant research focus and commercial implementation. ...

y Abstract This paper studies composed reduction systems: a system of programs built up from the reduction relations of some reduction system, by means of parallel and sequential composition operators. The trace-based compo-sitional semantics of composed reduction systems is considered, and a new graph-representation is introduced as an alternative basis for the study of compositional semantics...

Riser sleeves are an effective tool in the steel foundry industry for minimizing riser size and increasing casting yield. Reliable simulation of the performance of riser sleeves requires accurate temperature dependent thermophysical properties. Unfortunately there is little or no such property data available in the open literature. A limited number of sleeve manufacturers provide advice and pro...

The rate of solidification affects the microstructure, quality and mechanical properties of the castings. The analysis of heat transfer in centrifugal casting is very complex due to rapid solidification, rotating mould, opaque mould and high temperature. As the grain size is directly depending on the rate of solidification of the casting, based on grain size the rate of solidification of the ce...

During the continuous casting process, a nonstationary stress state forms in the metal, which is caused by a non-uniform temperature distribution, phase transitions, and the deformation of the stock in a semi-liquid state. Stresses occur also as a results of ferrostatic pressure and the deflection and straightening of the continuous casting. In addition to these phenomena, intensive processes o...

Steel-making and continuous/mould casting are the key processes of modern iron and steel enterprises. The continuous and mould casting schedule of mixed whole/half charging plan is the bottleneck for the steel-making and continuous/mould casting process. However, it is very difficult to find a solution against the characteristics and complicated environment. This paper proposed a heuristic batc...

In the present paper a review for the experimental and finite element analysis techniques is adopted for gravity die casting. Experimental Data taken for Solidification of gravity die Casting is modeled and meshed initially then validation is followed by comparing the experimental and modeled results. This helps to optimize the design criteria for gravity die cast part. To overcome the problem ...

Continuous casting is used to mass produce basic metals into long, semi-finished shapes with constant cross section, which are later processed into over 800 million tons of steel, 20 million tons of aluminum, and 1 million tons of copper, nickel, and other metal products in the world each year. Cross-sections can be rectangular, for later rolling into plate or sheet, square for long products, c...

Ray casting has become a fundamental step in many graphics algorithms es pecially in the area of global illumination Examples include using rays to calculate form factors for traditional radiosity track energy in particle tracing and trace possible transport paths in path tracing The appeal of ray casting is that it o ers a exible and intuitive way to query visibility within a scene and we expe...