APPLICATION OF COMPUTER GRAPHICS IN MARTENSITIC TRANSFORMATION

This paper discuss the stereographic method of martensitic transformation(MT) in the viewof computer graphics(CG)and programs are programmed to realize this method.Habitplane resulting from the programs agrees with that of numerical analysis in terms of the lat-tice parameters of austenite and martensite and shear mechanism supposed inFe-22%Ni-0.8%C alloy,so does orientation relationships.     

DEPENDENCE OF MAGNETISM OF Nd-Fe-B SINTERMAGNETS ON ORIENTATION MAGNETIC FIELD

The effect of the orientation magnetic field on the permanent magnetism of Nd-Fe-B sintermagnets is investigated. The results show that the variation law of mag-netism with orientation field obviosly changes at the critical orientation field and the in-tensity of the orientation field should be determined by the dimension ratio of the magnet for effectively utilizing its magnetic energv product.     

FRACTURE MECHANICS ANALYSIS OF THERMAL STRAINFATIGUE LIFE FOR THE SINTERING MACHINE PALLET

ＦＲＡＣＴＵＲＥＭＥＣＨＡＮＩＣＳＡＮＡＬＹＳＩＳＯＦＴＨＥＲＭＡＬＳＴＲＡＩＮＦＡＴＩＧＵＥＬＩＦＥＦＯＲＴＨＥＳＩＮＴＥＲＩＮＧＭＡＣＨＩＮＥＰＡＬＬＥＴＬＩＺｈｅｎｚｉａｎｄＬＩＭｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｒｃｈｉｔｅｃｔｎｒｅＥｎｇｉ...     

BASIC EQUATIONS FOR THERMO－ELECTROCHEMISTRYAND THE ENTROPY CHANGE OF THE STANDARDHYDROGEN ELECTRODE REACTION

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ORDERING OF VACANCIES IN RAPIDLYQUENCHED TiNi SHAPE MEMORY ALLOY

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Heterogeneity of intracellular polymer storage states in enhanced biological phosphorus removal (EBPR)--observation and modeling

A number of agent-based models (ABMs) for biological wastewater treatment processes have been developed, but their skill in predicting heterogeneity of intracellular storage states has not been tested against observations due to the lack of analytical methods for measuring single-cell intracellular properties. Further, several mechanisms can produce and maintain heterogeneity (e.g., different histories, uneven division) and their relative importance has not been explored. This article presents an ABM for the enhanced biological phosphorus removal (EBPR) treatment process that resolves heterogeneity in three intracellular polymer storage compounds (i.e., polyphosphate, polyhydroxybutyrate, and glycogen) in three functional microbial populations (i.e., polyphosphate-accumulating, glycogen-accumulating, and ordinary heterotrophic organisms). Model predicted distributions were compared to those based on single-cell estimates obtained using a Raman microscopy method for a laboratory-scale sequencing batch reactor (SBR) system. The model can reproduce many features of the observed heterogeneity. Two methods for introducing heterogeneity were evaluated. First, biological variability in individual cell behavior was simulated by randomizing model parameters (e.g., maximum acetate uptake rate) at division. This method produced the best fit to the data. An optimization algorithm was used to determine the best variability (i.e., coefficient of variance) for each parameter, which suggests large variability in acetate uptake. Second, biological variability in individual cell states was simulated by randomizing state variables (e.g., internal nutrient) at division, which was not able to maintain heterogeneity because the memory in the internal states is too short. These results demonstrate the ability of ABM to predict heterogeneity and provide insights into the factors that contribute to it. Comparison of the ABM with an equivalent population-level model illustrates the effect of accounting for the heterogeneity in models.     

Using hypertext for college course information

A hypertext browsing system was compared with a linearly based command-line system for accessing information concerning college transfer courses. Usability engineering guidelines were used in ascertaining student expectations and in designing the hypertext system. A prototype was tested against a linearly based command-line system. Performance in completing two tasks was significantly faster using the hypertext system. User perceptions of the hypertext system were more favorable than those of the linearly based system. These results are discussed relative to other studies which have not found a preference for hypertext systems. Differences in the type of task used as well as the need for incorporating usability engineering guidelines are emphasized.