Aggregate stability of soils from Western United States and Canada; measurement procedure, correlations with soil constituents

Cover title.

Aggregate food demand and the supply of agricultural products /

"National Economics Division, Economics and Statistics Service, U.S. Dept. of Agriculture"--P. iii.

The effects of aggregate unemployment insurance benefits in the U.S. on the operation of a local economy.

"Prepared by Ronald L. Oaxaca ... and Carol A. Taylor."

Fortran input/output conversion : Hydrologic Engineering Center computer program 72-J2-L208.

At head of cover title: Generalized computer program.

Output of factories processing farm food products in the United States, 1909-1958 /

Caption title.

Simulating aggregate and distributional effects of various plans for modifying the retirement earnings test /

"July 1990."

Simulating the long-run aggregate economic and intergenerational redistributive effects of social security policy /

"August 1992."

Data available for the measurement of output per man-hour.

"Errata sheet."

Input-output structure of the Soviet economy, 1972 /

Mode of access: Internet.

Paving asphalts : asphalt aggregate interactions and asphalt intermolecular interactions /

Mode of access: Internet.

The investigation of present aggregate gradation control practices and the development of short-cut or alternative test methods /

Mode of access: Internet.

Mineral technology and output per man studies.

Mode of access: Internet.

Output-Boundary Regulation Using Event-Based Feedforward for Nonminimum-Phase Systems

Thesis (Ph.D.)--University of Washington, 2016-06

Modelling the input-output behaviour of piezoelectric structural health monitoring systems for composite plates

This paper investigates the input-output characteristics of structural health monitoring systems for composite plates based on permanently attached piezoelectric transmitter and sensor elements. Using dynamic piezoelectricity theory and a multiple integral transform method to describe the propagating and scattered flexural waves an electro-mechanical model for simulating the voltage input-output transfer function for circular piezoelectric transmitters and sensors adhesively attached to an orthotropic composite plate is developed. The method enables the characterization of all three physical processes, i.e. wave generation, wave propagation and wave reception. The influence of transducer, plate and attached electrical circuit characteristics on the voltage output behaviour of the system is examined through numerical calculations, both in frequency and the time domain. The results show that the input-output behaviour of the system is not properly predicted by the transducers' properties alone. Coupling effects between the transducers and the tested structure have to be taken into account, and adding backing materials to the piezoelectric elements can significantly improve the sensitivity of the system. It is shown that in order to achieve maximum sensitivity, particular piezoelectric transmitters and sensors need to be designed according to the structure to be monitored and the specific frequency regime of interest.

Gray's model of personality and aggregate level factor analysis

Previous research shows that correlations tend to increase in magnitude when individuals are aggregated across groups. This suggests that uncorrelated constellations of personality variables (such as the primary scales of Extraversion and Neuroticism) may display much higher correlations in aggregate factor analysis. We hypothesize and report that individual level factor analysis can be explained in terms of Giant Three (or Big Five) descriptions of personality, whereas aggregate level factor analysis can be explained in terms of Gray's physiological based model. Although alternative interpretations exist, aggregate level factor analysis may correctly identify the basis of an individual's personality as a result of better reliability of measures due to aggregation. We discuss the implications of this form of analysis in terms of construct validity, personality theory, and its applicability in general. Copyright (C) 2003 John Wiley Sons, Ltd.