491,417 research outputs found
This Side Of The Grave: Navigating The Quaker Plainness Testimony In London And Philadelphia In The Eighteenth Century
For observant members of the Society of Friends in greater London and Philadelphia during the eighteenth century, navigating the Quaker plainness testimony involved material culture choices that might be viewed by non-Quakers as concealing motives of frugality or blurring class lines or as violating standards of decency and propriety. This was particularly true of coffins, which were carried through the streets from home to burial ground followed by family and friends. On this public stage, Quaker coffin choices satisfied the requirements for plainness while at the same time they demonstrated family values and fulfilled societal expectations
Momento Económico (44)
En este número
Temas de hoy, José Antonio Moreno 2.
México, deuda externa y la nueva
renegociación,
Fausto Burgueño 3.
Solución, negociación o
confrontación. (La deuda externa
de México),
Alicia Cirón C. 5
Plan Brady: ¿solución a la crisis
de la deuda?,
Patricia Olave C. 7.
La crisis de la deuda,
Ricardo Reyes H., Aristeo Tovías G. y Javier Villarreal A. 11.
Fondo Monetario Internacional: nueva carta de buenas
intenciones, Emilio Romero Blanco 16.
Indicadores económicos, México: Relaciones comerciales
con el Exterior 19.
El menú o la moratoria, poco espacio para negociar,
Pedro Medina 21.
Algunos rasgos de la política económica del 'nuevo' gobierno, Leticia Campos Aragón 23.
Las vicisitudes del pacto, José Antonio Moreno 29.
Los informales de la economía, Patricia Rodríguez 30
Experimentally determined wear behavior of an Al2O3-SiC composite from 25 to 1200 C
The sliding wear behavior of a self-mated alumina-silicon carbide whisker toughened composite was studied using optical, scanning electron (SEM) and transmission electron (TEM) microscopy. Because of its excellent strength and toughness properties this composite material is under consideration for use in heat engine applications for sliding contacts which operate at elevated temperatures. The composite's wear behavior and especially its wear mechanisms are not well understood. Pin-on-disk specimens were slid in air at 2.7 m/s sliding velocity, under a 26.5-N load, at temperatures 25 to 1200 C. Pin wear increased with increasing temperature. Based upon the microscopic analyses, the wear mechanism seems to be loosening of the reinforcing whiskers due to frictional and bulk heating. This leads to whisker pullout and increased wear
Sliding wear of self-mated Al2O3-SiC whisker reinforced composites at 23-1200 C
Microstructural changes occurring during sliding wear of self-mated Al2O3-SiC whisker reinforced composites were studied using optical, scanning electron microscopy, and transmission electron microscopy. Pin-on-disk specimens were slid in air at 2.7 m/sec sliding velocity under a 26.5 N load for 1 hr. Wear tests were conducted at 23, 600, 800, and 1200 C. Mild wear with a wear factor of 2.4 times 10(exp -7) to 1.5 times 10(exp -6) cu mm/Nm was experienced at all test temperatures. The composite shows evidence of wear by fatigue mechanisms at 800 C and below. Tribochemical reaction (SiC oxidation and reaction of SiO2 and Al2O3) leads to intergranular failure at 1200 C. Distinct microstructural differences existing at each test temperature are reported
Volume 61, Number 1 - Spring 1982
Volume 61, Number 1 - Spring 1982. 32 pages including covers and advertisements.
CONTRIBUTORS Flynn, Patricia ODE TO A RADISH Lombardi, Diane C. THE DANCER Gainer, Ed *a recluse poet Hogan, Peggy UNTITLED O\u27Connor, Katie UNTITLED MacGillivray, Karen SCALPEL Unternährer, Peter WINTER Ellerbeck, Brian WHAT THE WAVES SAID Cinquegranna, Diane ONION O\u27Connor, Katie JOYS OF A JALAPINO PEPPER Panaggio, Jim MY FRIEND Alex, Anthony TO THOSE WHO LAUGH AT MY SIGHT Kulbis, Tony PARTISAN Flynn, Patricia STEINWAY Evangelos, Lori STANDING IN THE MIDDLE OF EGYPT IN MY MIND WITH RAMESES II, THE GREAT STONE FACE Sprague, Joe inner mirror Deryck, Sandra Jeanne TALK IN A COLLEGE LIBRARY Gainor, Ed scholastic trilogy (biting the hand..) MacGillivray, Karen PAPER DOLLS Kulbis, Tony THE ME GENERATION SYMPHONY Evangelos, Lori WOMEN WITH WINGS WILL FLY Perel, Jane Lunin SEATED FIRGURE AGAINST A CURVED WALL, 1956-57 Flynn, Patricia AFTERNOON WALK II Ellerbeck, Brian THE LARK\u27S SONG
GRAPHICS
(in order of appearance) Cibulskis, Ann Elkington, R. Newell *Hadden, Doug *Mantarri, Desiree Glionna, Christopher G. cover drawing by Sockler, Paula
*Denotes Annual Contest Award-winne
Book Reviews
O\u27Brien, Intellectual Life and the American South, 1810-1860. by Timothy J. Williams; Hobson, McAdams, and Walkiewicz, eds., The People Who Stayed: Southeastern Indian Writing after Removal. by Eric Gary Anderson; Wright and Glass, eds., Passing in the Works of Charles W. Chesnutt. by J. Vincent Lowery; Wells and Phipps, eds., Entering the Fray: Gender, Politics, and Culture in the New South. by Kathleen C. Berkeley; Hagood, Faulkner\u27s Imperialism: Space, Place, and the Materiality of Myth. by Patricia B. Angle
Momento Económico (34-35)
En este número Temas de hoy. 21 El Pacto de Solidaridad Económica (PSE) y la inflación en México Fausto Burgueño Lomelí. 3/ El pacto, hacia la rectoría
trasnacional: significa la expropiación del salario Mario J. Zepeda. 4/ El PSE: Desinflación
con más estancamiento lfigenia Martínez, 5/ Inflación y PSE Arturo Guillén Romo, 7/ Qué es y cómo surgió el PSE Magdalena Galindo, 9/ El PSE o después del pueblo
ahogado...tapen el pozo Victor M. Bernal Sahagún, 13/ Monetarismo en el pacto lrma Manrique Campos, 14/ El pacto contra inflación: segundo round Emilio Romero Polanco.
11/ Aspectos monetarios y cambiarios del PSE Alma Chapoy Bonifaz, 18/ Financiamiento externo y PSE Andrés Blancas Neria, 23/ Apertura comercial y privatización: dos caras del
proyecto del gran capital Patricia Olave C. 28
Commencement Program: 1984
Invocation - Reverent John C. Fleming
Commencement Address - Shaila Aery
Presentation of Graduates - Marie Damien Adams, CSJ
Conferring of Degrees - Jane Kehoe Hassett, CSJ
Presentation of Alumni Hood - Patricia Cobb Jones
Recipient - David A. Kowalczyk
A Senior Statement - Kenneth Gerald Solomon
Benediction - Most Reverend Edward J. O\u27Donnel
Do Macroeconomic Indicators Determine Income Inequality In Selected African Countries?
Open Access via the Wiley Jisc AgreementPeer reviewedPublisher PD
A subquadratic algorithm for 3XOR
Given a set of binary words of equal length , the 3XOR problem
asks for three elements such that , where denotes the bitwise XOR operation. The problem can be easily solved on
a word RAM with word length in time . Using Han's fast
integer sorting algorithm (2002/2004) this can be reduced to . With randomization or a sophisticated deterministic dictionary
construction, creating a hash table for with constant lookup time leads to
an algorithm with (expected) running time . At present, seemingly no
faster algorithms are known. We present a surprisingly simple deterministic,
quadratic time algorithm for 3XOR. Its core is a version of the Patricia trie
for , which makes it possible to traverse the set in ascending
order for arbitrary in linear time.
Furthermore, we describe a randomized algorithm for 3XOR with expected
running time . The
algorithm transfers techniques to our setting that were used by Baran, Demaine,
and P\u{a}tra\c{s}cu (2005/2008) for solving the related int3SUM problem (the
same problem with integer addition in place of binary XOR) in expected time
. As suggested by Jafargholi and Viola (2016), linear hash functions
are employed. The latter authors also showed that assuming 3XOR needs expected
running time one can prove conditional lower bounds for triangle
enumeration just as with 3SUM. We demonstrate that 3XOR can be reduced to other
problems as well, treating the examples offline SetDisjointness and offline
SetIntersection, which were studied for 3SUM by Kopelowitz, Pettie, and Porat
(2016)
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