The Role of Hydrogen Bond in Designing Molecular Optical Materials

In this perspective article, we revise some of the empirical and semi-empirical strategies for predicting how hydrogen bonding affects molecular and atomic polarizabilities in aggregates. We use p-nitroaniline and hydrated oxalic acid as working examples to illustrate the enhancement of donor and acceptor functional-group polarizabilities and their anisotropy. This is significant for the evaluation of electrical susceptibilities in crystals; and the properties derived from them like the refractive indices.

Mostra-postuma del pittore cav. Giacomo Campi : Milano ... nella storica Loggetta degli Osii, giugno-luglio 1922.

Text signed: Gustavo Macchi.

Origine e progressi delle belle lettere italiane; corso critico- esegetico. Volume unico dall'epoca del risorgimento a tutto il secolo xv.

Cage copy imperfect: p. 225-879 wanting.

Impact of RFID in reverse logistics

This paper aims to discuss the recent literature on Radio Frequency Identification (RFID) and reverse logistics (RL). Particular attention is applied to the bullwhip effect and its increase as RL activities are integrated into the supply chain. RFID is investigated as a tool to assist with integrating reverse and forward logistics into a seamless supply chain and reduce the bullwhip effect. However, further research is required within this area and in particular the return on investment for RFID-enabled integrated systems.

Implementation challenges of application of radio frequency identification (RFID) in warehouse

Warehouse is an essential component in the supply chain, linking the chain partners and providing them with functions of product storage, inbound and outbound operations along with value-added processes. Allocation of warehouse resources should be efficient and effective to achieve optimum productivity and reduce operational costs. Radio frequency identification (RFID) is a technology capable of providing real-time information about supply chain operations. It has been used by warehousing and logistic enterprises to achieve reduced shrinkage, improved material handling and tracking as well as increased accuracy of data collection. However, both academics and practitioners express concerns about challenges to RFID adoption in the supply chain. This paper provides a comprehensive analysis of the problems encountered in RFID implementation at warehouses, discussing the theoretical and practical adoption barriers and causes of not achieving full potential of the technology. Lack of foreseeable return on investment (ROI) and high costs are the most commonly reported obstacles. Variety of standards and radio wave frequencies are identified as source of concern for decision makers. Inaccurate performance of the RFID within the warehouse environment is examined. Description of integration challenges between warehouse management system and RFID technology is given. The paper discusses the existing solutions to technological, investment and performance RFID adoption barriers. Factors to consider when implementing the RFID technology are given to help alleviate implementation problems. By illustrating the challenges of RFID in the warehouse environment and discussing possible solutions the paper aims to help both academics and practitioners to focus on key areas constituting an obstacle to the technology growth. As more studies will address these challenges, the realisation of RFID benefits for warehouses and supply chain will become a reality.

Entre lo público y lo privado: empleadores y trabajadoras domésticas frente al Tribunal del Trabajo Doméstico de la ciudad de Buenos Aires

El servicio doméstico ocupa un lugar ambiguo entre los mundos público y privado. Desarrollado en el interior de los hogares de los empleadores, da lugar a relaciones en las que lo laboral y lo afectivo están imbricados. Los juicios laborales entre empleadores y trabajadoras domésticas constituyen un escenario privilegiado para observar el solapamiento de estas dimensiones. Si las demandas de las trabajadoras frente a las instituciones de justicia sitúan esta relación en el mundo público, las respuestas de los empleadores muchas veces buscan resituarlas en el orden privado. Por otra parte, en algunos escenarios, las demandas de las trabajadoras son también expresadas en un lenguaje que remite a lo privado. En este artículo analizamos las lógicas de la confl ictividad judicial establecidas en las estrategias de empleadores y trabajadoras frente al Tribunal del Trabajo Doméstico (TTD), un organismo creado en 1956 para atender los confl ictos individuales que derivan de las relaciones de trabajo de este sector en la ciudad de Buenos Aires. Tomamos dos horizontes temporales caracterizados por cambios en la regulación del trabajo, en general, y del servicio doméstico, en particular: el de los primeros años de funcionamiento del TTD y el cambio de siglo.

Laser-Driven Ion Accelerators: State of the Art and Applications

Laser-plasma based accelerators of protons and heavier ions are a source of potential interest for several applications, including in the biomedical area. While the potential future use in cancer hadrontherapy acts as a strong aspirational motivation for this research field, radiobiology employing laser-driven ion bursts is alreadyan active field of research. Here we give a summary of the state of the art in laser driven ion acceleration, of the main challenges currently faced by the research inthis field and of some of the current and future strategies for overcoming them.

Descripción de funcionamiento del área de sostenibilidad en Colombia caso de estudio Bancolombia

La Responsabilidad Social Empresarial renueva la concepción de la empresa, otorgando a ésta una dimensión amplia e integradora, que va más allá de la cuestión económica en la que se incorpora perfectamente la triple faceta de la sostenibilidad: económica, social y medioambiental. El término Responsabilidad Social Corporativa ha sido definido “La RSE es la integración voluntaria, por parte de las empresas, de las preocupaciones sociales y ambientales en sus operaciones comerciales y en sus relaciones con sus interlocutores”.