The construction of maps of social networks is shown based in the Journal of Documentation during the period 1988-2005. The analysis is made by: (i) authors that produce the most within the publication, (ii) authors with the greatest centrality and…

Se registra un nuevo hospedero para Acanthoscelides malvitus Johnson, se redescribe la genitalia del macho y se proporciona un esquema de ésta.

This paper presents a nonlinear model for a capacitive microelectromechanical accelerometer (MEMA). System parameters of the accelerometer are developed using the effect of cubic term of the folded-flexure spring. To solve this equation, we use the FEA method. The neural…

This paper presents a novel method for the zone design problem that is based on a popular technique in the field of complex networks research: betweenness centrality. We use a parallel version of a community detection algorithm that outputs the…

A new species of brachypterous Mesepipsocus, the first species of this genus recorded in Bolivia, is here described and illustrated. It has caeciliusid wing venation, and the gonapophyses lack V1. The type is deposited in the National Collection of Insects,…

The kinematics simulation and modeling of a mechanical elbow of 3 degrees of freedom, is introduced by highlighting the main features of the mechanism related to the design criteria. The mechanical elbow is used as a transhumeral prosthetic part, and…

An active control system intended for the reduction of strictly periodic noise components in computer cooling fans is described, which is based on high-performance digital sound device architectures found in some personal computers. The system overcomes causality and synchronization constrains…

This paper presents a brief revision of several studies presented in the literature about the behavior of quantization noise for sinusoidal signals and for uniform quantizers. From this revision, the conclusion is that quantization noise has been assumed to be…

The effect of adding different Mg contents to an Al-12wt.%Zn master alloy was experimentally investigated. The Al-Zn-Mg alloys were unidirectionally solidified as a function of solidification parameters, temperature gradient G L, solidification front velocity V, and composition C0. The alloys…

As a competitive advantage in modern organizations, product diversification may cause complexities in today's extended supply chains. However, the Common Platform (CP) Strategy, as a concept of gaining maximum variety by minimum production elements, is believed to be one of…