Saltar navegación e ir al contenido principal

Estás filtrando por

Se encontraron 302 resultados en recursos

Exclusivo BibloRed

Imagen de apoyo de Hechos & Crónicas - 01/02/14

Por: | Fecha: 01/02/2014

Esto no es un juego. Pautas para un buen noviazgo. Van a morir... ¿De qué se arrepienten? ¿Qué tiene que ver Dios con las basuras? Vuelve la exFiscal Viviane Morales.

Fuente: Pasa La Página Formatos de contenido: Publicaciones periódicas

Temas:
Publicación periódica
Sociedad

Exclusivo BibloRed

Imagen de apoyo de Alternativa - 22/03/24

Por: | Fecha: 22/03/2024

"En agosto nos vemos" Juan Gabriel Vásquez, uno de los escritores más influyentes en América Latina, escribe en exclusiva para Alternativa una semblanza sobre la novela póstuma de Gabriel García Márquez. Marchas: ¿Dónde está el jefe de la oposición? Los retos de la nueva fiscal. Los dilemas de la memoria.

Fuente: Pasa La Página Formatos de contenido: Publicaciones periódicas

Temas:
Publicación periódica
Sociedad

Exclusivo BibloRed

Imagen de apoyo de Hechos & Crónicas - 01/04/14

Por: | Fecha: 01/04/2014

"Fui miserable y rechazada" Ana María Estupiñán. 100 trucos para ahorrar tiempo. ¿Sexo en el noviazgo? 10 razones para decir !NO¡.

Fuente: Pasa La Página Formatos de contenido: Publicaciones periódicas

Temas:
Publicación periódica
Sociedad

Exclusivo BibloRed

Imagen de apoyo de Hechos & Crónicas - 03/12/13

Por: | Fecha: 03/12/2013

Noches de paz, noches de amor. feliz Navidad y muchas bendiciones en 2014. Propósitos para 2014. Regale juguetes sabiamente. Sorprenda con la cena de navidad. Evite accidentes con la decoración navideña. ¡Auxilio, mi hijo no quiere volver a la iglesia! Así quedó la refoma a la salud.

Fuente: Pasa La Página Formatos de contenido: Publicaciones periódicas

Temas:
Publicación periódica
Sociedad

Exclusivo BibloRed

Imagen de apoyo de Hechos & Crónicas - 01/11/13

Por: | Fecha: 01/11/2013

Adopción. ¿Qué pasa con millares de niños colombianos?. Solteros alegres. ¿Pero qué tan felices?. FNA. Primera empresa estatal del país. La paz sí es posible. Manual 2da parte. Cómo guiar adolescentes.

Fuente: Pasa La Página Formatos de contenido: Publicaciones periódicas

Temas:
Publicación periódica
Sociedad

Exclusivo BibloRed

Imagen de apoyo de Hechos & Crónicas - 01/03/24

Por: | Fecha: 01/03/2024

Mujeres inspiradoras a lo largo de la historia. Lecciones de vida en medio de la nieve. Cuando hablamos de la oración. Mucho más que bella. El evangelio es salud mental.

Fuente: Pasa La Página Formatos de contenido: Publicaciones periódicas

Temas:
Publicación periódica
Sociedad

Por: Miller Alonso; Duncan Mara Camargo Valero | Fecha: 2007

Wastewater treatment technologies suitable for serving large populations are generally reliable and reasonably cost-effective, yet they are almost always financially inappropriate for small communities (,2,000 p.e.). Comparative cost data suggests that waste stabilization ponds should be an attractive option for small communities, yet perceptions relating to land costs, climate and effluent quality have limited their application in the UK. This paper details typical UK land costs, climate and winter performance data for apilot-scale waste stabilization pond with various upgrading technologies: system A, two tertiary maturationponds in series; B, two tertiary maturation ponds in series followed by a reed bed channel; C, a control rockfilter; D, an aerated rock filter; and E, a constructed wetland. System D was found to perform best, closely followed by system B.

Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos

Temas:
Otros
Ingeniería

Imagen de apoyo de Very thin POP and SIP packaging approaches to achieve functionality integration prior To TSV implementation

Por: Fernando Roa Vargas | Fecha: 2013

Discrete function integration is achieved at the package level with a variety of packaging solutions, mainly package on package. In this paper we review mainstream package on package technology offerings and compare them against improved versions of these packages where advances in materials properties and processing techniques are leveraged to meet increasingly tighter overall package thickness requirements while maintaining or improving the reliability, yield and cost effectiveness metrics set by the existing technologies. Different avenues to achieve very thin POP and system-in-a-package constructions are explored in detail, showing the implications in terms of material properties, new or improved processing steps and design trade-offs. Similarly, we show examples where these new techniques have been used successfully to achieve the stricter thickness targets and to prove that these technologies are ready to be applied and leveraged immediately for functionality integration without requiring extended development times or completely new processing methodologies.

Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos

Temas:
Otros
Ingeniería

Imagen de apoyo de Hybrid behaviour orchestration in a multilayered cognitive architecture using an evolutionary approach

Por: Oscar Javier; Antonio Jiménez Romero López | Fecha: 2008

Managing and arbitrating behaviours, processes and components in multilayered cognitive architectures when a huge amount of environmental variables are changing continuously with increasing complexity, ensue in a very comprehensive task. The presented framework proposes an hybrid cognitive architecture that relies on subsumption theory and includes some important extensions. These extensions can be condensed in inclusion of learning capabilities through bio-inspired reinforcement machine learning systems, an evolutionary mechanism based on gene expression programming to self-configure the behaviour arbitration between layers, a co-evolutionary mechanism to evolve behaviour repertories in a parallel fashion and finally, an aggregation mechanism to combine the learning algorithms outputs to improve the learning quality and increase the robustness and fault tolerance ability of the cognitive agent. The proposed architecture was proved in an animat environment using a multi-agent platform where several learning capabilities and emergent properties for self-configuring internal agent’s architecture arise.

Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos

Temas:
Otros
Ingeniería

Imagen de apoyo de Nitrogen Transformation and Removal in Maturation Ponds: Tracer Experiments with 15N Stable Isotopes in The United Kingdom in Summer

Por: Miller Alonso; Mara Camargo Valero | Fecha: 2007

The mechanisms and pathways by which nitrogen in its various forms is removed from waste stabilization ponds (WSP) have been a subject of much debate. In order to improve current understanding of the dynamics of inorganic and organic nitrogen removal in WSP systems, a study using stable nitrogen isotopes (15N) was undertaken on an experimental pilot-scale WSP system at Esholt Wastewater Treatment Works (Bradford, UK) in summer 2005 and 2006. A primary maturation pond was spiked with 15N-labelled ammonia (15NH4Cl) and 15N-labelled algae (Chlorella vulgaris) to track nitrogen transformations and removal associated with ammonia volatilization, nitrification, and algal uptake and its subsequent sedimentation and retention/hydrolysis in the sludge layer. Stable isotope analysis of 15N, in conjunction with performance indicators, revealed that total nitrogen is poorly removed (? 8%) but ammonium nitrogen removal is very good in summer (effluent concentration <2 mg NH4 + -N/L). The nitrogen cycle in maturation ponds is dominated by biological uptake as ammonium nitrogen is rapidly transformed into algal biomass as suspended organic nitrogen which then either leaves in the pond effluent or is sedimented as dead cells. Ammonia removal by volatilization makes little or no contribution to nitrogen removal and biological nitrate uptake prevents classical nitrification. Thus algal uptake of ammonium and subsequent sedimentation and retention in the sludge layer, after parti al ammonification of the algal organic nitrogen, appears to be the dominant mechanism for permanent nitrogen removal in maturation ponds during warm summer months in England.

Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos

Temas:
Otros
Ingeniería