Based on the theory of a falling shadow which was first formulated by Wang [15], a theoretical approach of the pseudo ideal structure in pseudo d-algebras is established. Several properties are investigated, and relations among a falling pseudo d-subalgebra, a falling pseudo BCK-ideal and a falling pseudo d-ideal are discussed. A characterization of a falling pseudo d-ideal is provided. Conditi...

This paper argues that a geographical perspectie is fundamental to understanding comparative economic development in the context of globalization. Central to this view is the role of agglomeration in productivity performance; size and location matter. The tools of the new economic geography are used to illuminate important epidsodes when the relative position of major eeconmies radically change...

Bipeds maintain balance by regulating angular momentum ( COM H ), redirecting ground reaction forces (GRF), and changing center of pressure (COP) location. If a biped’s trajectory passing through a certain state terminates in a fallen configuration, no matter what control law is used, then that state is called falling; vice versa, the state is called balanced (Fig. 1, [1]). Initial conditions, ...

background and aim: the elderly afflicted with hearing loss experience the consequent problems of falling and imbalance. some rea­sons have been reported for the relationship between hearing loss and imbalance. however, a large part of the population of the elderly does not experience hearing assessments and if such assessments are done, the right rehabilitation services are not offered. this s...

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Consider a slinky that is held at one end while the rest of it is allowed to hang freely. If the slinky is released, then as it falls due to gravity it also shrinks in extent due to the contracting force in the slinky itself. A few years ago it was discovered that the net effect of these two changes exactly counteract each other at the bottom extent of the slinky and therefore the bottom of the...