Air Classification of Grain Legumes: Cut Size Effects

Students in Psychology, English, and Natural Science were invited to submit questions for information deemed by them pertinent to success in a course. A 13-category classification of the 1030 items collected from 194 students showed dominance of personal and teacher-related questions. Mean number of questions for upper classmen were consistently lower than those for lower classmen, this being interpreted as a normative and developmental tendency. Types of questions were restricted to cultural norms that centered on personal traits, interests, attitudes, opinions, and work of the target person, rather than on interpersonal relationships, morality, sex, and personal concerns. Analysis of class-size effects indicated that students attending a large class asked significantly more questions than those attending a small class in one of the four categories assessed, grading practices. Lower classmen tended to ask more questions about acceptable classroom behavior than upper classmen.

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Intrinsic and Extrinsic Size Effects in Plasticity by Dislocation Glide

MRS Proceedings ◽

10.1557/proc-653-z8.5 ◽

2000 ◽

Vol 653 ◽

Author(s):

J. Gil Sevillano

Keyword(s):

Size Effects ◽

Mixed Effects ◽

Length Scale ◽

Internal Length ◽

Strain Gradients ◽

Dislocation Glide ◽

Spatial Gradients ◽

Internal Length Scale ◽

Plastic Process

AbstractA classification of size effects (SE) in plasticity is attempted. ”Intrinsic” SE are perceived when any internal length scale directly influencing some process or property interferes with the size of the material region where the process is going on or when two internal length scales directly affecting the same process or property interfere. ”Extrinsic” SE arise from the external imposition of spatial gradients in the plastic process or by the building up of internal gradients by the (externally induced) process itself. In dislocation-mediated plasticity plastic strain gradients are resolved by the storage of geometrically necessary dislocations (GND) leading to prominent size effects. Of course, mixed effects with intrinsic and extrinsic contributions can be found as well as superposed effects involving more than two characteristic lengths (i.e., size effects on size effects).The inclusion of both types of SE in continuum or crystallographic theories is commented.

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Analysis on the Efficiency of the Air Classification of Fly Ash

Geosystem Engineering ◽

10.1080/12269328.1999.10541138 ◽

1999 ◽

Vol 2 (2) ◽

pp. 37-42 ◽

Cited By ~ 2

Author(s):

Hee Chan Cho ◽

Jae Kwan Kim

Keyword(s):

Fly Ash ◽

Air Classification

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Air Classification of Pin-Milled Soybean Hulls

Cereal Chemistry ◽

10.1094/cchem.2002.79.3.439 ◽

2002 ◽

Vol 79 (3) ◽

pp. 439-444 ◽

Cited By ~ 10

Author(s):

Walter J. Wolf ◽

David J. Sessa ◽

Y. Victor Wu ◽

Arthur R. Thompson

Keyword(s):

Soybean Hulls ◽

Air Classification

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The Investigation of the First Order Size Effect in Micro-Plastic Forming

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.464.592 ◽

2011 ◽

Vol 464 ◽

pp. 592-595

Author(s):

Yun Wang ◽

Jing Jing Wang ◽

Jia Xi Wang ◽

Zhen Ying Xu ◽

Pei Long Dong

Keyword(s):

Size Effects ◽

Rapid Development ◽

Theory Model ◽

Electronic Industry ◽

Layer Model ◽

Micro Forming ◽

First Order ◽

Micro Parts ◽

Plastic Forming

With the rapid development of MEMS and electronic industry, the demands for micro-parts are increasing gradually. However, size effects make the traditional forming theories and deformation mechanism not suitable in micro forming field. In this paper, we introduced the classification of the size effects. It pointed out that the size effects can be divided into the first order and the second order size effects in the micro-forming. For the first order size effects, the theory model was established based on the surface layer model. It also clarified the phenomenon that flow stress of the blank reduced with the increase of the ratio of grain size and thickness (t decreases or d increases). Finally, the model was verified with the experimental results of the first order size effects in the references, confirming the effectiveness of the theoretical model. It provides a method to theoretically and experimentally study the micro-plastic forming.

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