192 research outputs found
Typability and type inference in atomic polymorphism
No full textIt is well-known that typability, type inhabitation and type inference are
undecidable in the Girard-Reynolds polymorphic system F. It has recently been proven
that type inhabitation remains undecidable even in the predicative fragment of system F
in which all universal instantiations have an atomic witness (system Fat). In this paper we
analyze typability and type inference in Curry style variants of system Fat and show that
typability is decidable and that there is an algorithm for type inference which is capable of
dealing with non-redundancy constraints.The second author acknowledges the support of FCT — Fundação para a Ciência e a Tecnologia under the
projects UIDB/04561/2020, UIDB/00408/2020 and UIDP/00408/2020, and she is also grateful to CMAFcIO —
Centro de Matemática, Aplicações Fundamentais e Investigação Operacional and to LASIGE — Computer
Science and Engineering Research Centre (Universidade de Lisboa).info:eu-repo/semantics/publishedVersio
'Pilings of Thought Under Spoken': The Poetry of Susan Howe, 1974-1993.
No full textPhDThis thesis discusses the poetry published by contemporary American poet Susan
Howe over a period of almost two decades. The dissertation is chiefly concerned with
articulating the relationship between poetic form, history, and authority in this body
of' work. Howe's poetry dredges the past for the linguistic effects of patriarchy,
colonialism and war. My reading of the work is an exploration of the ways in which a
disjunctive poetics can address such historical trauma. The poems, rather than
attempting to reinstate voices lifted from what Howe has called "the dark side of
history", are a means of reflecting the resistance that the past offers to contemporary
investigation. It is the effacement, and not the recovery, of history's victims, that is
discernible in the contours of these highly opaque texts. Notions of authority are most
often addressed in the poetry through the figure of paternal absence, which has a
threefold function in the work, serving to represent social authority, an aporetic
conception of divinity and an autobiographical narrative. Alongside the antiauthoritarian
currents in the writing - critiques, for example, of the doctrine of
Manifest Destiny or of scapegoating versions of femininity - my thesis stresses Howe's
engagement with negative theology and with a strain of American Protestant
enthusiasm that has its roots in 17th century New England. The dissertation explores
the dissonance caused by the co-existence in the poetry of elements of political dissent
and religious mysticism. Finally, I consider Howe's engagement with literary history
and authors such as Shakespeare, Swift, Thoreau and Melville. The manner in which
Howe deploys the words of others in her work, I argue, allows for a mixture of textual
polyphony and a more conventional notion of authorial 'voice'
Clarence-Richmond Coastal Area, NSW, 1996 (P643), radiometric line data, AWAGS levelled
No full textMaintenance and Update Frequency: notPlannedStatement: This Clarence-Richmond Coastal Area, NSW, 1996 (P643), radiometric line data, AWAGS levelled is an airborne-derived radiometric data for the Clarence-Richmond Coastal Area, NSW, 1996. The data was acquired under the project No. 643 for the geological survey of NSW. A total of 48370 line-kilometres of data at a line spacing between 200m and 1600m, and 80m terrain clearance were acquired during this survey. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data (Milligan et al., 2009). This survey data is essentially levelled to AWAGS. Noise-adjusted singular value decomposition (NASVD) has been applied to the data. NASVD is a spectral component analysis procedure for the removal of noise from gamma-ray spectra. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134.
References:
Milligan, P.R., Minty, B.R.S., Richardson, M. & Franklin, R., 2009. The Australia-wide Airborne Geophysical Survey accurate continental magnetic coverage. Preview, No. 138, p. 1-128,
Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.<br/> This Clarence-Richmond Coastal Area, NSW, 1996 (P643), radiometric line data, AWAGS levelled were acquired in 1996 by the NSW Government, and consisted of 48370 line-kilometres of data at a line spacing between 200m and 1600m, and 80m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS
Spatial distribution of colel Ap plasmid deoxyribonucleic acid isolated from escherichia coli after chloramphenicol amplification, 1979
No full textAn examination of varied lysis conditions upon the release of freely sedimenting ColEl Ap molecules on neutral sucrose (CLOS) gradients revealed: (i) That 0.5 M NaCl used throughout the lysis procedure gave consistently better recovery than 1.0 M and 0.25 M NaCl; (ii) neither ribonuclease (RNase) nor pronase was markedly effective in releasing freely sedimenting ColEl Ap plasmid DNA above control values after chloramphenicol amplification of plasmid copy number. Plasmid DNA ob�tained from exponentially grown cultures in the presence and absence of chloramphenicol (Cm), isolated in the presence and absence of RNase, re�vealed a single monomeric species (32S) of ColEl Ap complexed with the rapidly sedimenting bacterial nucleoid (chromosome and membrane). Ex�periments designed to elucidate the intracellular localization of pulse labeled ColEl Ap after Cm exposure revealed a high level (42%) of membrane bound plasmid DNA. Membrane bound DMA was identified by cesium chloride sucrose double density equilibrium gradients. Further, RNase was found to release a significant fraction of pulsed plasmid DNA from the membrane associated region of cesium chloride (CsCl) sucrose gra�dients. At least two species of RNA are suggested to maintain the association of plasmid DNA to the chromosome membrane complex: One species being rifampicin and RNase sensitive and stabilizing the high�ly looped chromosomal configuration; and another species, rifampicin sensitive, associating monomeric forms of the amplified ColEl Ap to the folded bacterial nucleoid
Recommended from our members
The Moral Philosophy of Samuel Johnson
No full textThe purpose of the author is to give a resume of Johnson's England and by examining The Rambler and Boswell's Life of Johnson, to determine what the Doctor thought concerning the prevailing conditions, social practices, and ideas of his time
A technique for the isolation of Plasmid Deoxyribonucleic acid from Pseudomonas Aeruginosa, 1977
No full textThe Cleared Lysate on Sucrose (CLOS) gradient has been used in these studies as a primary tool in the isolation of plasmid deoxyribonucleic acid (DNA), both sex factor and resistance factor, from Pseudomonas aeruginosa. A concentration of 1.0 M NaCl in the gradient was shown to keep the chromosome in the folded configuration. A concentration of 0.05 M NaCl in the gradient was shown to promote chromosomal unfolding.Ten micrograms of ribonuclease (RNase), layered on the gradient, did not affect chromosomal unfolding significantly. Plasmid peak areas from CLOS gradients, presumed to contain the sex factor or resistance factor, were pooled and subjected to Cesium Chloride-Ethidium Bromide gradient analysis. The analysis indicated that only a small percentage of the molecules band in the covalently closed circular (CCC) region of the gradient. The majority of the molecules band in the open circular (OC) and linear regions of the gradient. Contour length measurements of the linear molecules of the FP2 sex factor indicate that their molecular weight is close to the molecular weight of the plasmid, as reported in the literature
Interactions of plasmid DNA with the membranes of proteus mirabilis, 1988
No full textThe interactions of plasmid DNA with the membranes of Proteus mirabilis has been investigated under in vitro conditions. Analysis of the endogenous plasmid, NR1, the compatible plasmid, R6K, and the incompatible plasmid, R6- 5, on 5-20% neutral sucrose gradients, following the in vitro binding assay revealed binding to inner and outer membrane preparations. In competition experiments, R6K did not compete with NR1 for binding site(s). However, R6-5 successfully competed with NR1. Furthermore, high salts (0.2 M KCl or MgC12) inhibited the binding of NR1, R6K, and R6-5 to the membranes of P. mirabilis. However, 5-20% gradients containing salts did not release plasmids from their bound templates. In addition, plasmid minus P. mirabilis membranes did not bind compatible nor incompatible plasmids. Restriction enzyme digested fragments did not bind to membrane fractions
The Copper and Iron Content of Some Texas Vegetables
No full textThe importance of iron and copper in the Human body as well as in the human diet has been clearly established.
In keeping with the progress of sciences, the Department of Natural Sciences at Prairie View State Noraml and Industrial College is making a study and comparison of results and facts, established in other sections of the country.
The Author has chosen this subject because of the recent interest manifested in the mineral content of vegetables in other sections, and chiefly because of his interests in analytical chemistry and research. No available data on the mineral contents of Texas vegetables has been published, especially with reference to copper and iron contents.
In the course of the analysis, the author hopes to establish a table, or tables, showing the copper and iron contents of vegetables, and the copper and iron effeciency of vegetables in this section. It is his hope that this information will prove to be reliable, and that it will prove of informational value not only to the members of the Science Department, but to all other individuals interested in Health and Nutrition.
It is the belief of the author taht such imformation, in the course of time, will have a practical value, as well as an increased value in regard to Theory.
Extensive tables of the copper and iron content of vegetables have been prepared by authors in other sections,(16), (17)
Analysis of r6k plasmid deoxyribonucleic acid isolated from pseudomonas aeruginosa, 1978
No full textThe Cleared Lysate on Sucrose (CLOS) gradient was used in this study as the primary tool in isolating plasmid DNA. The CLOS procedure maintains the "folded configuration" of the bacterial chromosomes at the bottom of the gradients. Studies on the effects of ribonuclease and pronase on the isolation of R6K plasmid deoxyribonucleic acid from Pseudomonas aeruginosa strain RS93 suggested that neither RNase or pronase had any significant effects on the recovery of R6K from RS93. In terms of total percentage recovery of R6K, Triton in the absence of an intermediate ribonuclease (RNase) layer elicited the highest yield of plasmid DNA. Plasmid peak areas from CLOS gradients, presumed to contain R6K, were pooled and subjected to cesium chloride-ethidium bromide (CsCl-EtBr) dye buoyant density gradient analysis. The analysis indicated that only a small percentage of the total molecules recovered banded in the covalently closed circular (CCC) region of the gradient. The majority of the molecules banded in the open circular (OC) and linear regions of the gradient. When plasmid peak areas from CLOS gradients were subjected to alkaline sucrose gradient analysis, there was an absence of recoverable CCC molecules from alkaline gradients. Of the salt concentrations used, 0.5 M NaCl used throughout the CLOS procedure was shown to elicit the highest percentage recovery of R6K from _P. aeruginosa strain RS93
From Chautauqua to Wastelands: The Bestors and American education - 1905-1955
No full textThis thesis is a historical study of some of the forces which have helped to shape American attitudes towards learning and schooling. In an attempt better to explain these forces, it looks in depth at a particular educational controversy which took place in the 1950s, and at the philosophy of education of one of the participants in that controversy.In 1953 Arthur Bestor, then of the faculty of the department of history at the University of Illinois, published Educational Wastelands. In this book Bestor criticized the policies governing this country's public high schools, arguing that it was the birthright of all American children to be given a liberal education.To aid the reader in understanding the issues involved in Bestor's criticisms of public school education, the study looks first at the growth and development of two systems of American education: (1) the expansion of the high schools in the early decades of the twentieth century and (2) the emergence and decline of the Chautauqua system of popular education. Juxtaposing these two traditions of education sets the stage for the main discussion of the thesis--an examination of the manner and extent to which the long involvement of Arthur E. Bestor, Sr. with Chautauqua Institution and adult education not only molded his own philosophy of education but had considerable impact upon the way his son viewed our educational heritage.Arthur Bestor attacked educationists--by whom he meant those involved with the processes of public school education, i.e. administrators at the local, state, and federal levels in boards of education and professors of education in this country's colleges of education--particularly those who endorsed life adjustment education. He charged that, although the American public had entrusted the schools with the intellectual development of their children, the differentiated curricula under which schools operated were detrimental to such development. Not only was this undemocratic, he said, but it served to promote anti-intellectualism, the antithesis of the role for which the schools had been created.Made available in DSpace on 2011-05-07T14:08:36Z (GMT). No. of bitstreams: 2
license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5)
9215905.pdf: 15857087 bytes, checksum: 78db23fdebadbeed1c66c2420faf034e (MD5)
Previous issue date: 1992Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding ([email protected]) on 2011-05-07T15:03:25Z
Item is restricted indefinitely.Restriction data tranferred 2014-07-01T11:30:13-05:00
Original Data
Group with Access UIUC Users [automated]
Release Date: none
Reason: ETDs are only available to UIUC Users without author permissionETDs are only available to UIUC Users without author permissionU of I Onl
- …
