Inglés II : conceptos gramaticales básicos para la comprensión de lecturas Aída O'Ward R.

UANL

Diabetes mellitus gestacional : comparación de la validez de los criterios diagnósticos de las pruebas ADA y OMS con base al estándar de referencia NDDG

Tesis (Doctorado en Medicina) UANL

Generating Compliant Motion of Objects with an Articulated Hand

The flexibility of the robot is the key to its success as a viable aid to production. Flexibility of a robot can be explained in two directions. The first is to increase the physical generality of the robot such that it can be easily reconfigured to handle a wide variety of tasks. The second direction is to increase the ability of the robot to interact with its environment such that tasks can still be successfully completed in the presence of uncertainties. The use of articulated hands are capable of adapting to a wide variety of grasp shapes, hence reducing the need for special tooling. The availability of low mass, high bandwidth points close to the manipulated object also offers significant improvements I the control of fine motions. This thesis provides a framework for using articulated hands to perform local manipulation of objects. N particular, it addresses the issues in effecting compliant motions of objects in Cartesian space. The Stanford/JPL hand is used as an example to illustrate a number of concepts. The examples provide a unified methodology for controlling articulated hands grasping with point contacts. We also present a high-level hand programming system based on the methodologies developed in this thesis. Compliant motion of grasped objects and dexterous manipulations can be easily described in the LISP-based hand programming language.

La Ca??ada Real Segoviana a su paso por Madrid

Se trata de un conjunto de estudios de diversa ??ndole sobre la Ca??ada Real Segoviana a su paso por la provincia de Madrid desde varios puntos de vista: tur??stico y relacionados con el medio ambiente natural y humano..

La Ca??ada Leonesa

Gu??a que pretende animar al conocimiento de las ca??adas. Propone un itinerario que parte de la Sierra de Guadarrama y llega hasta Talavera de la Reina. Hace una introducci??n hist??rica y describe brevemente el medio natural..

Los juegos en La Il??ada y en La Eneida

Se hace un estudio comparativo y una descripci??n de las competiciones atl??ticas que aparecen en las obras de Homero y Virgilio, la Il??ada y la Eneida, respectivamente. En la Eneida, Virgilio adopta muchos elementos hom??ricos, sin embargo, los adopta a rasgos y aspectos propios de su ??poca.

La Ca??ada Real de la Plata a su paso por la provincia de Zamora : tratamiento multidisciplinar de los temas transversales

Contiene : 1- Gu??a did??ctica, 2- Actividades (cuaderno de ruta), 3- Proyecto de trabajo y 4- Disquete. El ejemplar con n??mero de Registro x no tiene disquete ni diapositivas. No consta centro realizador. Premio Nacional a la Innovaci??n Educativa, 1997

Memoria hist??rica versus historia ense??ada

El art??culo forma parte de un monogr??fico dedicado a memoria hist??rica y educaci??n.

Batxillerat d'Arts Esc??niques, M??sica i Dansa a l'institut XXV Olimp??ada

Resumen basado en el de la publicaci??n

Consumer attitudes towards and willingness to pay for pesticide residue limit compliant 'safe' vegetables in Northeast Thailand

Pesticide residue in vegetables is a major food safety issue in Thailand. A range of vegetable products (organic/pesticide-free/ hydroponic) has emerged in Thai markets that guarantee compliance with maximum residue limits. The Government of Thailand is eager to extend the benefits of this suite of alternative vegetables to the entire population, particularly the semi-urban/rural segments that are often bypassed by such speciality products. However, little information is available to guide such an effort, particularly with regard to up-country consumer attitudes, shopping and consumption habits and willingness to pay premiums for such produce. This research aims to fill this gap in knowledge. It reports the results of a survey of vegetable consumption and shopping habits and attitudes of 608 consumers in northeast Thailand. Willingness to pay premiums for pesticide residue limit compliant vegetables is also assessed by using a contingent valuation method, and determinants of willingness to pay are examined using an ordered probit empirical model. Results indicate that, given adequate awareness of relative risks, even up-country consumers are willing to pay market premium levels for these products, and that inadequate availability, rather than lack of demand is the constraining factor. Willingness to pay is found to increase with income, age and supermarket sourcing of vegetables. We also discuss the challenge of improving availability at mainstream outlets.

Control of a compliant two-axis robotic arm

In order to ease control, the links between actuators and robotic limbs are generally made to be as stiff as possible. This is in contrast to natural limbs, where compliance is present. Springs have been added to the drive train between the actuator and load to imitate this natural compliance. The majority of these springs have been in series between the actuator and load. However, a more biologically inspired approach is taken, here springs have been used in parallel to oppose each other. The paper will describe the application of parallel extension springs in a robot arm in order to give it compliance. Advantages and disadvantages of this application are discussed along with various control strategies.

Control of a compliant two-axis robotic arm

It is common to make the links between actuators and robotic limbs as stiff as possible, in complete contrast to natural systems, where compliance is present. In the past, to create some compliance in a drive, springs have been added to the link between the actuator and load. Many of these springs have been in series with the drive, but recently a more 'biological' approach has been taken where two springs have been used in parallel to counteract each other. This paper describes the application of parallel extension springs in a robot arm in order to give it compliance. Advantages and disadvantages of this application are discussed, along with various control strategies.

Correcting for local oscillator phase offset in a DVB-T compliant receiver under multipath conditions

In 1997, the UK implemented the worlds first commercial digital terrestrial television system. Under the ETS 300 744 standard, the chosen modulation method, COFDM, is assumed to be multipath resilient. Previous work has shown that this is not necessarily the case. It has been shown that the local oscillator required for demodulation from intermediate-frequency to baseband must be very accurate. This paper shows that under multipath conditions, standard methods for obtaining local oscillator phase lock may not be adequate. This paper demonstrates a set of algorithms designed for use with a simple local oscillator circuit which will allow correction for local oscillator phase offset to maintain a low bit error rate with multipath present.