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Those Pullman Blues

Those Pullman Blues

Perata David

Madison Books, Inc
1999
nidottu
The first oral history centering on the unique experiences of black porters and railroad attendants during the railroad's heyday is by turns dramatic, inspiring, comic, and heartwrenching. First person accounts document both the glamour of the railroad era and the bitter realities of being a black worker on a white railroad.
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Why Transfinite Set-Theory is Wrong and an Alternative Theory of Numeric Structures

Why Transfinite Set-Theory is Wrong and an Alternative Theory of Numeric Structures

David Peralta

Eliva Press
2024
pokkari
Set Theory is a formalization of the existence and fundamental properties of mathematical objects as collections of elements and/or elements included in collections. Its formulation is so basic and comprehensive that it has been postulated as the foundation of all mathematics. Perhaps, the major achievement of Set Theory is that, after being criticized by many reputable mathematicians and philosophers since its appearance, it is now commonly accepted as the primary explanation of the most basic components of mathematics: numbers; and not only the numbers we have needed or we may ever need but all the numbers that could potentially exist. In Set Theory, an infinite sequence of numbers exists not as the mere projection of a construction algorithm but as a complete and self-identical mathematical object: a set. In Set Theory the words infinite and infinity do not refer to the property of growing endlessly (potential infinity) but to a definite magnitude; a number; the actual infinity. As a result of such a conception, Set Theory arrives at the conclusion that there exist infinitely many infinities, each one with a different value. The set of postulates, proofs and theorems used to justify the existence of such infinities is commonly known as Transfinite Set-Theory. The first part of this work shows how some of the properties and theorems applied to infinite sets, in Set Theory, necessarily lead to internal and fundamental contradictions under classical logic, even when the idea of actual infinity is accepted. Throughout the second part, motivated by the necessity of an alternative to Transfinite Set-Theory, due to the incapacity of such a theory to explain some of the findings shown in the first part (especially the proof of the existence of as many rational as irrational numbers), the author develops a theory to provide a better understanding of infinite sequences of numbers.
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El tunel de La Laja

El tunel de La Laja

G. David Peralta

Createspace Independent Publishing Platform
2015
nidottu
Cinco chicos viajan en un coche para ir a pasar unos d as de vacaciones, cuando pasan por El t nel de La Laja, quedan atrapados en l. Un a o m s tarde, aparece el coche al otro lado del t nel con s lo dos chicos, uno de ellos est muerto y el otro traumatizado por lo que les sucedi all dentro. Qu misterios guarda el t nel? Qu sucedi con el resto de los chicos? Secuestro? Asesinato? Ad ntrate en El t nel de La Laja y descubre lo sucedido siguiendo a los entra ables personajes que componen la historia. La psiquiatra Bianca Rojas, el inspector Jos Mckin y el chico superviviente Tommy.
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Los angeles de Tamadaba

Los angeles de Tamadaba

G. David Peralta

Createspace Independent Publishing Platform
2016
nidottu
Cuando Javier Campoy abri los ojos, no pod a imaginarse que se encontraba en Gran Canaria. Lo nico que recordaba era que una potente luz lo hab a deslumbrado cuando a altas horas de la madrugada, y solo en su coche, viajaba de vuelta a su casa en Madrid. Una larga lista de personas desaparecidas en la isla llevaron a los inspectores Jos Mckin y Pablo Jim nez a investigar a un ciudadano alem n, Gilbert Meier, dirigente de una secta cuya ideolog a estaba determinada por una leyenda sobre una familia de curanderos que habit , a principios del siglo XX, en el pinar de Tamadaba. De ah que los isle os les conocieran por Los ngeles de Tamadaba. Todos ellos, junto a una larga lista de personajes muy bien definidos, se ver n envueltos, como actores involuntarios, en una misma trama. Los ngeles de Tamadaba es una novela que se desarrolla en los paisajes naturales de la isla de Gran Canaria y ofrece una intensa trama, rodeada de misterio, intriga y una acci n trepidante.
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Optimale Auswahl Der Kontrollmassnahmen

Optimale Auswahl Der Kontrollmassnahmen

Helman Hernández Riaño; Jesús David Ruiz Peralta; María Trinidad Plaza Gómez

Verlag Unser Wissen
2021
pokkari
In dieser Studie wurde ein mathematisches Modell auf Basis des Knapsack-Problems vorgeschlagen, um die Auswahl von Kontrollma nahmen darzustellen, die die Reduzierung von Risikofaktoren in einem Arbeitsschutzmanagementsystem maximieren. Dar ber hinaus wurden metaheuristische L sungsalgorithmen ausgew hlt und an das untersuchte Problem angepasst, um die Ergebnisse zu optimieren.
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Optimal Selection of Control Measures

Optimal Selection of Control Measures

Helman Hernández Riaño; Jesús David Ruiz Peralta; María Trinidad Plaza Gómez

Our Knowledge Publishing
2021
pokkari
In this study, a mathematical model based on the knapsack problem was proposed to represent the selection of control measures that maximize the reduction of risk factors in an Occupational Health and Safety Management System. In addition, metaheuristic solution algorithms were selected and adapted to the studied problem in order to optimize the results.
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Selezione Ottimale Delle Misure Di Controllo

Selezione Ottimale Delle Misure Di Controllo

Helman Hernández Riaño; Jesús David Ruiz Peralta; María Trinidad Plaza Gómez

Edizioni Sapienza
2021
pokkari
In questo studio, stato proposto un modello matematico basato sul problema knapsack per rappresentare la selezione delle misure di controllo che massimizzano la riduzione dei fattori di rischio in un sistema di gestione della salute e della sicurezza sul lavoro. Inoltre, gli algoritmi di soluzione meta-euristici sono stati selezionati e adattati al problema studiato per ottimizzare i risultati.
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Optymalny Wybór Srodków Kontroli

Optymalny Wybór Srodków Kontroli

Helman Hernández Riaño; Jesús David Ruiz Peralta; María Trinidad Plaza Gómez

Wydawnictwo Nasza Wiedza
2021
pokkari
W niniejszej pracy zaproponowano model matematyczny oparty na problemie plecaka, kt ry reprezentuje wyb r środk w kontroli, kt re maksymalizują redukcję czynnik w ryzyka w systemie zarządzania bezpieczeństwem i higieną pracy. Ponadto wybrano metaheurystyczne algorytmy rozwiązania, kt re zostaly zaadaptowane do badanego problemu w celu optymalizacji wynik w.
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Selecção Óptima de Medidas de Controlo

Selecção Óptima de Medidas de Controlo

Helman Hernández Riaño; Jesús David Ruiz Peralta; María Trinidad Plaza Gómez

Edicoes Nosso Conhecimento
2021
pokkari
Neste estudo, foi proposto um modelo matem tico baseado no problema da mochila para representar a sele o de medidas de controle que maximizem a redu o dos fatores de risco em um Sistema de Gest o de Sa de e Seguran a Ocupacional. Al m disso, foram seleccionados algoritmos de solu o meta-heur stica e adaptados ao problema estudado, de modo a optimizar os resultados.
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Correction of Umbilical Hernias in Pigs with PVC

Correction of Umbilical Hernias in Pigs with PVC

Mastoby Miguel Martinez Martinez; Efrén David Avendaño Peralta; Diana Marcela Pérez Berrio

International Book Market Service Ltd
2023
pokkari
Two of the most common anatomical defects that occur in swine are scrotal hernias and umbilical hernias with a frequency of 1.7 to 6.7%. They are produced by weakening of the muscles around the umbilical stump, causing its opening with the intestines coming out and giving an appearance of mass in the anatomical area. The abdominal contents are enveloped by the parietal peritoneum. Diagnosis is basically clinical, with palpatory signs such as ring, continent and hernial contents, which are reduced with manual pressure. Radiology and ultrasonography are used as confirmatory techniques.Although there are several surgical techniques for correction, there is no one that is accepted as the best worldwide by surgeons. For this reason, new methods are always being sought that meet all expectations when performing herniorrhaphy, such as easy to practice, minimally invasive, effective, not requiring specialized instruments and demanding surgical environments, as well as biomaterials that meet some of the above requirements plus tissue acceptance at the site of implantation.
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Lima fundada by Pedro de Peralta Barnuevo

Lima fundada by Pedro de Peralta Barnuevo

Slade David F.; Williams Jerry W.

The University of North Carolina Press
2017
nidottu
Pedro de Peralta Barnuevo (1664–1743), a writer of early eighteenth-century viceregal Peru, believed that his epic poem Lima fundada (1732), in tandem with Historia de España vindicada (1730), was his crowning literary achievement. His instincts have proven correct. However, in spite of the fact that Lima fundada is Peralta’s most cited work, it has not been published in its entirety since it appeared. For the first time in more than 280 years, David F. Slade and Jerry W. Williams have edited the entire poem, including all of its original paratexts, introductory compositions, prologue,footnotes, marginal notes and index. Lima fundada by Pedro de Peralta Barnuevo: A Critical Edition recounts the founding of Peru’s capital city by Fernando Pizarro, a hero that gives shape to a conflicted discourse about colonization and empire. Lima fundada is implicitly about criollo identity, history, and power in the face of a hierarchical system that gives preference tothe Peninsular-born. The text is a complex history of the conquest in which a cast of nations, empires, rulers, and peoples join to create Peralta’s vision of Peru, while celebrating creoles as the true inheritors of the city’s heroic founding.
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