Small trees and shrubs play an important role in forest diversity and regeneration and may contribute substantially to ecosystem fluxes of carbon and water; however, relatively little attention is given to quantifying the contribution of small trees to forest processes. One reason for this may be that the allometric equations developed for large trees tend to systematically underestimate struct...

The well-known structural model used to estimate market structure suffers from a severe collinearity problem if the marginal cost and demand equations are linear.

The present paper reviews two complementary methods for model-based structural damage detection with applications. The theoretical basis of these two methods is a partitioned formulation of the equations of motion for structures and its application to localized structural system identification. The first method is based on the changes in the localized flexibility while the second utilizes invar...

DAESA, Differential-Algebraic Equations Structural Analyzer, is a MATLAB tool for structural analysis of differential-algebraic equations (DAEs). It allows convenient translation of a DAE system into MATLAB and provides a small set of easy-to-use functions. DAESA can analyze systems that are fully nonlinear, highindex, and of any order. It determines structural index, number of degrees of freed...

The present talks deals with a uniform approach to the discretization in time of rigid body dynamics, nonlinear structural mechanics and flexible multibody systems. In particular, it is shown that a uniform set of differential-algebraic equations (DAEs) with constant mass matrix governs the motion of rigid bodies and semi-discrete formulations of structural components (such as geometrically exa...

The purpose of this study is to present a model of human resource architecture in Iranian Customs. This research is in the category of exploratory mixed research. In the qualitative phase, the statistical population was academic experts in HR, managers and assistants in the field of Customs of Southern Iran. Purposeful sampling was continued until theoretical saturation. The sample size was 19 ...