2,709 research outputs found
Sporting Heroes, Autobiography and Illness Narratives: A Brief Comparison of Bob Champion and Lance Armstrong
Bootstrapping a Stress-Tensor Form Factor through Eight Loops
We bootstrap the three-point form factor of the chiral stress-tensor
multiplet in planar supersymmetric Yang-Mills theory at six,
seven, and eight loops, using boundary data from the form factor operator
product expansion. This may represent the highest perturbative order to which
multi-variate quantities in a unitary four-dimensional quantum field theory
have been computed. In computing this form factor, we observe and employ new
restrictions on pairs and triples of adjacent letters in the symbol. We provide
details about the function space required to describe the form factor through
eight loops. Plotting the results on various lines provides striking numerical
evidence for a finite radius of convergence of perturbation theory. By the
principle of maximal transcendentality, our results are expected to give the
highest weight part of the and
amplitudes in the heavy-top limit of QCD through eight loops. These results
were also recently used to discover a new antipodal duality between this form
factor and a six-point amplitude in the same theory.Comment: 44 pages, 8 figures, 8 tables; v2, minor corrections, journal
version, references adde
Truth Recovery: an interview with Lance Olsen
Lance Olsen is author of more than 30 books of and about innovative writing, including, most recently, the novels Skin Elegies (Olsen, 2021) and Always Crashing in the Same Car (Olsen, 2023). His short stories, essays, and reviews have appeared in hundreds of journals and anthologies. A Guggenheim, Berlin Prize, D.A.A.D. Artist-in-Berlin Residency, Rockefeller Foundation Bellagio Center, two-time N.E.A. Fellowship, and Pushcart Prize recipient, as well as a Fulbright Scholar, he teaches experimental narrative theory and practice at the University of Utah.
This interview is a dialogue about the blurring of fiction and non-fiction, creative writing's place and role in the 21st Century, and Olsen's commitment to experimental writing and his use of processes, concepts and ideas to subvert what many regard as traditional writing and storytelling. It also considers how narrative can be deconstructed, reconfigured, re-constructed and re-invigorated; the possibilities and ethics of remix and appropriation; the failures of mainstream publishing; and how we can or might represent our complex and confusing lives on the page. Olsen's use of (at times oppositional and contradictory) multiple or polyphonic voices, changing points of view, stylistic mutation and contrasting forms, along with a frequent blurring of story, script, prose poetry and stream-of-consciousness writing facilitate and encourage the reader to assemble their own narratives, without this ever being anything other than enjoyable.
It is to be hoped that the interview will encourage and assist others to rethink creative-writing pedagogy, or at least consider the theoretical assumptions behind normative teaching and writing
Folding Amplitudes into Form Factors: An Antipodal Duality
We observe that the three-gluon form factor of the chiral part of the stress-tensor multiplet in planar N=4 super-Yang-Mills theory is dual to the six-gluon MHV amplitude on its parity-preserving surface. Up to a simple variable substitution, the map between these two quantities is given by the antipode operation defined on polylogarithms (as part of their Hopf algebra structure), which acts at symbol level by reversing the order of letters in each term. We provide evidence for this duality through seven loops.We observe that the three-gluon form factor of the chiral part of the stress-tensor multiplet in planar super-Yang-Mills theory is dual to the six-gluon MHV amplitude on its parity-preserving surface. Up to a simple variable substitution, the map between these two quantities is given by the antipode operation defined on polylogarithms (as part of their Hopf algebra structure), which acts at symbol level by reversing the order of letters in each term. We provide evidence for this duality through seven loops
Communicating Grammatically: Evaluating a Learner Strategies Website for Spanish Grammar
Additional contributors: Angela Pinilla-Herrera; Andrew D. Cohen (faculty mentor)This website is dedicated to the pursuit of ways to enhance learners’ control of Spanish grammar.Thompson, Jonathan; Witzig, Lance. (2009). Communicating Grammatically: Evaluating a Learner Strategies Website for Spanish Grammar. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/60012
In Vivo Silicon Lance Array Transfection of Plant Cells
Arrays of silicon lances were made using photolithographic and STS DRIE Bosch techniques. Arrays consist of a 10 mm square grid pattern of lances measuring 100 m tall and having a 3 mm diameter, each lance being spaced 30 mm apart. The tips of lances are pointed, allowing easier penetration through plant cell walls. A nanoinjector device was also made to accept the silicon lance arrays and perform nanoinjections. A nanoinjection consisted of 2 silicon lance arrays, with lances oriented towards each other, being moved into and out of a plant cotyledon placed between them. Prior to the nanoinjection, polar molecules in solution can be attracted to the lances through a process utilizing the nanoinjector device’s ability to control the electrical current between the 2 lance arrays. During the nanoinjection the displacement between the lances, the force exerted on the plant cotyledon and the electrical current between the lance arrays are controlled. Once the lances are inserted into the cells, the electrical current between the lance arrays is reversed, repelling the molecular load from the lance array. Propidium iodide (PI) and Cotton Leaf Crumple Virus (CLCrV) were used as molecular loads in nanoinjections. The nanoinjector also records and outputs data from the nanoinjection for analysis. Nanoinjections were performed on Arabidopsis and Cotton cotyledons. Changes in the force applied during a nanoinjection and varying the number of repeated nanoinjections on the same cotyledon were observed. Too much force or too many repeated injections causes physical damage to the cotyledon. An optimal force and number of repeated injections can be performed without causing physical damage to the cotyledon. Successful transfection of PI and CLCrV was not observed in a relatively small number of performed nanoinjection procedures on either Arabidopsis or Cotton cotyledons. Possible interacting variables and recommendations for further work are discussed
Charles Lance
Charles Lance worked as the Dean of students from 19852 - 1986. NOTE: the white spot above his head is on the image itself
Developing consistency by consensus: Avoiding fiat in language revitalization
Linguistic !eld work in Tlingit is occurring cooperatively within a triangle of linguists, teachers, and speakers who collaborate electronically and in person between Vancouver, British Columbia, Amherst, Massachusetts, and Juneau, Alaska. Their work makes it into the classroom almost immediately as they collectively refine methods of language documentation, teaching, and revitalization. While the group that works at the deepest linguistic levels of the language is small, they are wide ranging in their backgrounds and geographic locations. This makes small- group email messages and discussions the method of reaching consensus, which opens the door for quick decisions that are then implemented in documentation and teaching methodologies.
Historically, Tlingit has been impacted the most by external forces. At times, those were devastating entities like boarding schools, missionaries, and community-wide racism. At others, they were miraculous in terms of language documentation and curriculum development by missionaries and linguists. Today, There are three highly active linguists, in three different locations, and each of them are making tremendous contributions in documenting and understanding linguistic phenomena that native speakers knew intrinsically, but that teachers and students often found difficult if not impossible to document and predict. These three are all working with varying degrees of traits that are external and internal to Tlingit land, culture, and language.
There is a non-Tlingit linguist, (co-author), living in Juneau and having the most direct contact with fluent speakers, and often is associated with some of the largest gatherings of speakers of Tlingit today. Then there is the first Tlingit linguist, (author), who is studying outside of Tlingit country and feeding materials into the classroom and through speakers remotely, and is creating handbooks and presentations that will change the way Tlingit verbs and grammar are understood, taught, and learned. Finally, there is a non-Tlingit linguist (co-author), living in Massachusetts and helping refine some of the little-understood territories within Tlingit, like insubordinate clauses and other phenomena.
The linguistic discoveries made by these three are implemented into newly developing curriculum and teaching methodologies by the author. He is the first tenure-track faculty in Alaska Native Languages at the university and works collaboratively with the co-authors, and local speakers and teachers to implement shifts in language documentation and teaching. These linguistic activities are combining with an promotional campaign that is initiating a true revitalization for the Tlingit language
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