Willingness-to-Pay for Attribute Level and Variability: The Case of Mexican Millers’ Demand for Hard Red Winter Wheat

In-person interviews were carried out with Mexican millers who were administered a conjoint-type survey designed to incorporate uncertainty in attribute levels. Two methods were used to model millers’ risk preferences: a modified mean-variance approach and an explicit expected utility approach. Controlling for variability, Mexican millers are willing to pay premiums for increases in quality factors such as test weight, protein content, falling number, and dough strength/extensibility. We find millers are not particularly sensitive to changes in the variability of quality characteristics. Out-of-sample forecasts suggest the mean-variance model provides an accurate depiction of actual Mexican imports.mean-variance, Mexican wheat market, moment generating function, preference elicitation, wheat quality, Agribusiness, Farm Management, Food Consumption/Nutrition/Food Safety, International Relations/Trade, Marketing, Production Economics, Risk and Uncertainty, C35, C42, Q13,

Blade loss transient dynamics analysis, volume 1. Task 1: Survey and perspective

An analytical technique was developed to predict the behavior of a rotor system subjected to sudden unbalance. The technique is implemented in the Turbine Engine Transient Rotor Analysis (TETRA) computer program using the component element method. The analysis was particularly aimed toward blade-loss phenomena in gas turbine engines. A dual-rotor, casing, and pylon structure can be modeled by the computer program. Blade tip rubs, Coriolis forces, and mechanical clearances are included. The analytical system was verified by modeling and simulating actual test conditions for a rig test as well as a full-engine, blade-release demonstration

Multiple scattering effects in quasi free scattering from halo nuclei: a test to Distorted Wave Impulse Approximation

Full Faddeev-type calculations are performed for $^{11}$Be breakup on proton target at 38.4, 100, and 200 MeV/u incident energies. The convergence of the multiple scattering expansion is investigated. The results are compared with those of other frameworks like Distorted Wave Impulse Approximation that are based on an incomplete and truncated multiple scattering expansion.Comment: 7 pages, 16 figures, to be published in Phys. Rev.

Ra y el oro en los Textos de las Pirámides: Algunas notas

Las relaciones entre Ra, el dios del sol, y el oro parecen ser un tema bien conocido de la religión egipcia antigua dadas las asociaciones solares de dicho metal precioso. Sin embargo, no existen estudios que se hayan ocupado de conocer en detalle dichas relaciones. En este trabajo se propone un análisis de los encantamientos de los Textos de las Pirámides donde existen vínculos entre dicha deidad y el oro, teniendo en cuenta tanto los precedentes de dichas asociaciones de significado como los componentes literarios e intertextuales de los pasajes relevantes. A resultas de este análisis se ha constatado que la riqueza de imágenes, contextos y expresiones que asocian a Ra con el oro es notablemente mayor de la más evidente de las metáforas que los ligan en relación con la luz y el brillo de ambos. Aparecen así ligados en contextos de protección contra ofidios, en relación con la alegría jubilosa, en descripciones del cielo previo al amanecer como cuajado de luces de varios minerales, en la imagen de Ra como un ternero de oro cuando nace por el este o como de una punta de flecha o de lanza de oro que atraviesa la bóveda celeste, o en la caracterización como áureas de una roseta como forma primigenia de Ra o de una barca de ese mismo diosThe relations between Re, the Sun-god, and the gold seem to be a well-known topic of the Egyptian religion given the solar associations of that precious metal. Nevertheless, there are not detailed studies on those associations. This paper aims to analyse the spells of the Pyramid Texts where that deity and the gold are related, taking into account its precedents and the literary and intertextual elements of the concerned passages. As a result of this analysis it has been established that the richness of images, contexts and expressions that associate the god Re and the gold is significantly higher than the most evident metaphor that link them by means of the light and bright of both of them. They are thus related in contexts of protection against snakes, rising with an exalted joy, in descriptions of the sky before the sunrise as a space full of light as made in several minerals, in the image of Re as a calf of gold when he rises from the east, or the description of a rosette –a primeval form of Re– and of a boat of this god as made in gol

Effect of Publicly Released Quality Information for US Hard Red Winter Wheat on Mexican Millers' Welfare

Entities have been providing quality related information to overseas wheat buyers as a response to the increased requests for this information. This study measures the value of information to Mexican millers. The value to Mexican millers is measured by the difference of the flour mill surplus and compensating variation.Agribusiness, Research and Development/Tech Change/Emerging Technologies,

Blade loss transient dynamics analysis, volume 2. Task 2: Theoretical and analytical development. Task 3: Experimental verification

The component element method was used to develop a transient dynamic analysis computer program which is essentially based on modal synthesis combined with a central, finite difference, numerical integration scheme. The methodology leads to a modular or building-block technique that is amenable to computer programming. To verify the analytical method, turbine engine transient response analysis (TETRA), was applied to two blade-out test vehicles that had been previously instrumented and tested. Comparison of the time dependent test data with those predicted by TETRA led to recommendations for refinement or extension of the analytical method to improve its accuracy and overcome its shortcomings. The development of working equations, their discretization, numerical solution scheme, the modular concept of engine modelling, the program logical structure and some illustrated results are discussed. The blade-loss test vehicles (rig full engine), the type of measured data, and the engine structural model are described

Danzas natales en las tumbas del Reino Antiguo

En algunas tumbas de particulares del Reino Antiguo figuran escenas de baile por parejas cuya interpretación, pese a que varios autores se hayan ocupado de estudiarlas, todavía ofrece notables dificultades por lo escueto de su desarrollo y la oscuridad de sus textos asociados. A través del análisis de sus contextos icónicos, los tipos de danzas reproducidos, las características de los oficiantes y el contenido iconográfico y textual de los pasos de baile, se puede determinar que tales escenas reproducen danzas rituales efectuadas durante los partos, las cuales, como favorecedoras del nacimiento, fueron trasladadas y adaptadas a contextos funerarios para ayudar al dueño del sepulcro en su (re)nacimiento. Los movimientos, piruetas y torsiones de los dos bailarines en estas danzas, que presentan un buen número de conexiones con la diosa Hathor, imitarían los esfuerzos de la madre durante el parto destinados a separarse felizmente del neonato, y muy posiblemente habrían formado parte de los ritos destinados a propiciar un buen alumbramientoEven though several scholars have studied the scenes of pair dances of some private tombs of the Old Kingdom, their interpretation still offers a number of difficulties because of their succinct visual display and the unclarity of their associated texts. Through the analysis of their iconic contexts, the style of the dance, the features of the performers and the iconic and textual contents of the steps, it has been found that these scenes show ritual dances which were performed on the occasion of births and for this reason were transferred and adapted to funerary contexts in order to help the owner of the tomb in his/her (re)birth. The steps, pirouettes and twistings of both dancers, which have many connections with the goddess Hathor, would imitate the efforts made by the mother during the delivery to separate successfully from the neonate, and very probably they would have been part of the rites for a good birth

Tool Multimedia of Helps in the Transmission of a Laboratory of Digital Processors of Sign (DSPs)

El presente trabajo describe una aplicación multimedia realizada en el Departamento de Ingeniería Electrónica de la Escuela Superior de Ingenieros de Sevilla. La herramienta, un CD interactivo, se ha desarrollado con vistas a su empleo como laboratorio virtual y sistema de ayuda en la impartición de un laboratorio de Procesadores Digitales de Señal (DSPs). El uso de este CD agiliza el proceso de aprendizaje y/o entrenamiento de los estudiantes en la asignatura, fomentando la participación de los alumnos en el mismo. El material didáctico se emplea en la actualidad, con gran éxito, en las clases prácticas de la asignatura "Complemento de Sistemas Electrónicos Digitales", de tercer curso de Ingeniero de TelecomunicaciónThis paper describes a multimedia application developed by the department of Electronic Engineering at the University of Seville. This tool, an interactive CD, has been developed as a virtual laboratory utility and as tutorial in a Digital Signal Processors laboratory. The CD employment improves the learning process of the students, and it foments the students´ participation. The didactic material is currently and successfully used in the practical lessons of 3th course subject "Digital Electronic Systems", at the Telecommunication Engineer School