We consider truthful implementation of the socially efficient allocation in an independent private-value environment in which agents receive private information over time. We propose a suitable generalization of the pivot mechanism, based on the marginal contribution of each agent. In the dynamic pivot mechanism, the ex post incentive and ex post participation constraints are satisfied for all ...

This paper proposes an analysis of the effect of vertical position of the pivot point of the inverted pendulum during humanoid walking. We introduce a new feature of the inverted pendulum by taking a pivot point under the ground level allowing a natural trajectory for the center of pressure (CoP), like in human walking. The influence of the vertical position of the pivot point on energy consump...

We consider principal pivot transform (pivot) on graphs. We define a natural operation, called dual pivot, and show that both the kernel and the set of maximally applicable pivots of a graph is invariant under this operation. The result is motivated by and applicable to the theory of gene assembly in ciliates.

Similarity search refers to any searching problem which retrieves objects from a set that are close to a given query object as re ected by some similarity criterion. It has a vast number of applications in many branches of computer science, from pattern recognition to textual and multimedia information retrieval. In this thesis, we examine algorithms designed for similarity search over arbitrar...

BACKGROUND AND AIM OF THE STUDY An integrated macro/micro approach was used to evaluate flow within the pivots of the Medtronic ADVANTAGE bileaflet heart valve. Results were compared with those obtained with the St. Jude Medical bileaflet heart valve. METHODS The integrated macro/micro approach consists of both a macroscopic hydrodynamic performance assessment and a three-part microscopic flo...

Chinese and Spanish are the most spoken languages in the world. However, there is not much research done in machine translation for this language pair. We experiment with the parallel Chinese-Spanish corpus (United Nations) to explore alternatives of SMT strategies which consist on using a pivot language. Particularly, two well-known alternatives are shown for pivoting: the cascade system and t...

Recent research on multilingual statistical machine translation focuses on the usage of pivot languages in order to overcome resource limitations for certain language pairs. Due to the richness of available language resources, English is in general the pivot language of choice. In this paper, we investigate the appropriateness of Asian languages as pivot languages. Experimental results using st...

27 28 The simulation of center-pivot performance has been the subject of research 29 efforts since the 1960s. Center-pivot models frequently use empirical equations 30 relating pressure and sprinkler radial application pattern. Individual, stationary 31 water application patterns are overlapped and the resulting water application is 32 mapped in the field. Such models use constant tower angular...