Políticas e instituciones de apoyo a la micro y pequeña empresa (MYPE) en el Perú

Incluye Bibliografía

Swarm control designs applied to a micro-electro-mechanical gyroscope system (MEMS)

This paper analyzes the non-linear dynamics of a MEMS Gyroscope system, modeled with a proof mass constrained to move in a plane with two resonant modes, which are nominally orthogonal. The two modes are ideally coupled only by the rotation of the gyro about the plane's normal vector. We demonstrated that this model has an unstable behavior. Control problems consist of attempts to stabilize a system to an equilibrium point, a periodic orbit, or more general, about a given reference trajectory. We also developed a particle swarm optimization technique for reducing the oscillatory movement of the nonlinear system to a periodic orbit. © 2010 Springer-Verlag.

Cuentas de producción y análisis de insumo-producto: hacia la integración de los datos micro, meso y macroeconómicos

Incluye Bibliografía

Políticas de apoio a micro e pequenas empresas no Brasil: avanços no período recente e perspectivas futuras

Incluye bibliografía

Cooperación con micro, pequeñas y medianas empresas agroalimentarias en el marco del Acuerdo de Asociación entre la Unión Europea y Chile 2002-2013: balance y perspectivas

Incluye bibliografía

Micro e pequenas empresas no comércio exterior do Brasil

Incluye Bibliografía

Programas de apoyo a las micro, pequeñas y medianas empresas en México, 1995-2000

Incluye Bibliografía

Financiamiento de la banca comercial a micro, pequeñas y medianas empresas en México

Incluye Bibliografía

Financiamiento de la inversión de empresas en general y de micro, pequeñas y medianas empresas en particular: el caso de Uruguay

Incluye Bibliografía

Accountability and revenue metering in smart micro-grids

Smart micro-grids offer a new challenging domain for power theories and metering techniques, because they include a variety of intermittent power sources which positively impact on power flow and distribution losses, but may cause voltage asymmetry and frequency variation. Due to the limited power capability of smart micro-grids, the voltage distortion can also get worse (in case of supplying non-linear loads), affecting measurement accuracy and possibly causing tripping of protections. In such a context, a reconsideration of power theories is required, since they form the basis for supply and load characterization. A revision of revenue metering techniques is also needed, to ensure a correct penalization of the loads for their responsibility in generating reactive power, voltage unbalance and distortion. This paper shows that the Conservative Power Theory (CPT) provides a suitable background to cope with smart grids characterization and metering needs. Experimental results validate the proposed approach. © 2010 IEEE.

The in vitro antimicrobial activity of natural infant fluoride-free toothpastes on oral micro-organisms

Purpose: The objective of this study was to evaluate the antimicrobial activity of six toothpastes for infants: 3 fluoride-free experimental toothpastes - cashew-based, mango-based and without plant extract and fluoride compared with 2 commercially fluoride-free toothpastes and 1 fluoridated toothpastes. Methods: Six toothpastes for infants were evaluated in this study: (1) experimental cashew-based toothpaste; (2) experimental mango-based toothpaste; (3) experimental toothpaste without plant extract and fluoride (negative control); (4) First Teeth brand toothpaste; (5) Weleda brand toothpaste; and (6) Tandy brand toothpaste (positive control). The antimicrobial activity was recorded against Streptococcus mutans, Streptococcus sobrinus, Lactobacillus acidophilus, and Candida albicans using the agar plate diffusion test. Results: First Teeth, Weleda, mango-based toothpaste, and toothpaste without plant extract presented no antimicrobial effect against any of the tested micro-organisms. Cashew toothpaste had antimicrobial activity against S mutans, S sobrinus, and L acidophilus, but it showed no antimicrobial activity against C albicans. There was no statistical difference between the inhibition halo of cashew and Tandy toothpastes against S mutans and L acidophilus. Conclusions: Cashew fluoride-free toothpaste had inhibitory activity against Streptococcus mutans and Lactobacillus acidophilus, and these results were similar to those obtained for fluoridated toothpaste.

Magnitud y heterogeneidad: políticas de fomento del empleo juvenil y las micro y pequeñas empresas

Incluye Bibliografía

Management procedures for sustainable development (applicable to municipalities, micro-regions and river basins)

Includes bibliography

Necesidades de bienes y servicios ambientales en las micro y pequeñas empresas: el caso mexicano

Incluye Bibliografía

Oferta de bienes y servicios ambientales para satisfacer las necesidades de micro y pequeñas empresas: el caso mexicano

Incluye Bibliografía