Why Does Anyone Mediate if Mediation Risks Psychological Dissatisfaction, Extra Costs and Manipulation? Three Theories Reveal Paradoxes Resolved by Mediator Standards of Ethical Practice

Published in cooperation with the American Bar Association Section of Dispute Resolutio

Leak Detection In Large Storage Tanks Using Seismic Boundary Waves

This paper describes a field evaluation of a technique for detecting leaks in large above ground storage tanks. The technique detects leaking tank products in the foundation material by sensing anomalies in seismic boundary waves transmitted across the tank bottom. The evaluation consisted of three steps: (1) investigation of surface (Rayleigh) wave anomalies due to surface soil saturation in linear arrays; (2) evaluation of boundary waves propagated across the bottom of typical tanks; and (3) a surface (Rayleigh) wave experiment using tomography to locate velocity changes due to surface soil saturation. The results of these tests have shown that boundary waves can be easily propagated along a tank bottom and received by conventional geophones, and that soil saturation anomalies can be detected and located using boundary waves and tomographic reconstruction

A versatile source of polarization-entangled photons

We propose a method for the generation of a large variety of entangled states, encoded in the polarization degrees of freedom of N photons, within the same experimental setup. Starting with uncorrelated photons, emitted from N arbitrary single photon sources, and using linear optical tools only, we demonstrate the creation of all symmetric states, e.g., GHZ- and W-states, as well as all symmetric and non-symmetric total angular momentum eigenstates of the N qubit compound.Comment: 4 pages, 3 figure

Electroactive polymer-carbon nanotube composites: smart organic materials for optoelectronic applications

Los nanotubos de Carbono combinados con polímeros conductores intrínsecos contribuirán en un futuro al progreso en nanoelectrónica y al desarrollo de nuevos y mejores dispositivos electrónicos y optoelectrónicos. Este artículo resume nuestro trabajo en materiales compuestos polianilina-nanotubos de carbono altamente funcionales y procesables, y muestra la estrecha relación existente entre las interacciones polímeronanotubo y la funcionalidad y comportamiento en el procesado de los materiales obtenidos.Carbon nanotubes combined with intrinsically conducting polymers may contribute to further progress in nanoelectronics and to the development of improved electronic and optoelectronic devices. This article summarizes our work on highly functional and processable polyaniline-carbon nanotube composite materials. It also demonstrates the close relation between functionality and processing behavior and describes nanotube-polymer interactions

Takagi-Taupin Description of X-ray Dynamical Diffraction from Diffractive Optics with Large Numerical Aperture

We present a formalism of x-ray dynamical diffraction from volume diffractive optics with large numerical aperture and high aspect ratio, in an analogy to the Takagi-Taupin equations for strained single crystals. We derive a set of basic equations for dynamical diffraction from volume diffractive optics, which enable us to study the focusing property of these optics with various grating profiles. We study volume diffractive optics that satisfy the Bragg condition to various degrees, namely flat, tilted and wedged geometries, and derive the curved geometries required for ultimate focusing. We show that the curved geometries satisfy the Bragg condition everywhere and phase requirement for point focusing, and effectively focus hard x-rays to a scale close to the wavelength.Comment: 18 pages, 12 figure

Nanostructured Polythiophene Hybrid Charge-Transfer Complexes

Este trabajo se centra en la síntesis de nuevos nanohíbridos dador-aceptor (D/A) de politiofeno solubles en medios acuosos y en la elucidación de la interacción electrónica entre las unidades D/A como en el funcionamiento de los nanohíbridos en forma de películas delgadas en aplicaciones optoelectrónicas.Utilizando técnicas de auto-ensamblaje in-situ de politiofeno en presencia de diferentes nanomateriales como son el óxido de grafeno, puntos cuánticos de semiconductores o láminas de dicalcogenuros de metales de transición se ha conseguido la formación de complejos de transferencia de carga, solubles en agua y con superiores propiedades electrónicas de relevancia para el desarrollo de dispositivos optoelectrónicos basados en películas delgadas <br /

Fluorescent polymeric carbon dots: from synthesis and elucidation of chemical struture towards photoactive hybrid materials

En este trabajo se cubren tres aspectos fundamentales de la investigación en el campo de los carbón dots (CDs). A través de detallados estudios estructurales, caracterización óptica y cálculos teóricos, la primera parte de la tesis consigue identificar las estructuras orgánicas y las fuerzas que producen la fluorescencia azul. En la segunda parte, se ha presentado un nuevo método para controlar la estructura y las propiedades químicas de nanopartículas poliméricas, ofreciendo una herramienta muy versátil para el diseño de materiales basados en CDs como sensores y vectores de fármacos. En la tercera y última parte de la tesis, a partir de los CDs y dicalcogenuros de metales de transición (MoS2 y WS2) se han preparado materiales híbridos, con vistas a su posible uso en aplicaciones de fotocatálisis y conversión de energía. <br /

Mitigating Spirals of Conflict in DoD Source Selections

Government contracting is rife with opportunities for miscom- munication and misperception. This can undermine trust and fuel spirals of conflict. For this article, the authors interviewed participants and analyzed Government Accountability Office (GAO) bid protest decisions involving Department of Defense source selections. They found agency, vendor, and GAO prac- tices that trigger and fuel these spirals. Contracting agencies and GAO can take steps to improve communication, reduce inconsistencies, and reduce perceptions of bias, thereby miti- gating costly bid protests