Howley, Peter M
2015-01-01
The role of infectious agents in cancer is generally underappreciated. However, approximately 20% of human cancers are caused by infectious agents and as such they rank second only to tobacco as a potentially preventable cause in humans. Specific viruses, parasites, and bacteria have been linked to specific human cancers. The infectious etiology for these specific cancers provides opportunities for prevention and treatment.
Wilson disease is a rare inherited disorder that prevents your body from getting rid of extra copper. You ... extra copper into bile, a digestive fluid. With Wilson disease, the copper builds up in your liver, and ...
... in copper, such as –shellfish –liver –mushrooms –nuts –chocolate • A person cannot prevent Wilson disease; however, people with a family history of Wilson disease, especially those with an affected ...
... prevent organ damage. Changes in Eating, Diet, and Nutrition People with Wilson disease should reduce their dietary copper intake by avoiding foods that are high in copper, such as shellfish liver mushrooms nuts chocolate People should not eat these foods during the ...
2016 Electrochemistry Gordon Research Conference and Gordon Research Seminar
2016-02-23
2016 Electrochemistry Gordon Research Conference & Gordon Research Seminar Operational Summary The Gordon Research Conference (GRC) and Gordon...Research Seminar (GRS) on Electrochemistry were held at the Ventura Beach Marriott in Ventura, California from January 9-15, 2016. The meeting covered...TO THE ABOVE ADDRESS. Gordon Research Conferences, Inc. 512 Liberty Lane West Kingston, RI 02892 -1502 ABSTRACT Final Report: 2016 Electrochemistry
Loudianos, G; Gitlin, J D
2000-01-01
Wilson's disease is an autosomal recessive disorder of copper metabolism resulting from the absence or dysfunction of a copper transporting P-type ATPase encoded on chromosome 13. This ATPase is expressed in hepatocytes where it is localized to the trans-Golgi network and transports copper into the secretory pathway for incorporation into ceruloplasmin and excretion into the bile. Under physiologic circumstances, biliary excretion represents the sole mechanism for copper excretion, and thus affected individuals have progressive copper accumulation in the liver. When the capacity for hepatic storage is exceeded, cell death ensues with copper release into the plasma, hemolysis, and tissue deposition. Presentation in childhood may include chronic hepatitis, asymptomatic cirrhosis, or acute liver failure. In young adults, neuropsychiatric symptoms predominate and include dystonia, tremor, personality changes, and cognitive impairments secondary to copper accumulation in the central nervous system. The laboratory diagnosis of Wilson's disease is confirmed by decreased serum ceruloplasmin, increased urinary copper content, and elevated hepatic copper concentration. Molecular genetic analysis is complex as more than 100 unique mutations have been identified and most individuals are compound heterozygotes. Copper chelation with penicillamine is an effective therapy in most patients and hepatic transplantation is curative in individuals presenting with irreversible liver failure. Elucidation of the molecular genetic basis of Wilson's disease has permitted new insights into the mechanisms of cellular copper homeostasis.
Woodrow Wilson Fellows--Who Are They Now?
Rein, Richard K.
1975-01-01
The Woodrow Wilson Senior Fellows are prominent leaders in business and government that are sent to college campuses for a week instead of a one-night lecture. This program has proved to be immensely popular on campuses. (PG)
Response to "An Experiment in Method" (J. L. J. Wilson)
Stehlik, Tom
2010-01-01
This article presents the author's response to "An Experiment in Method" by J.L.J. Wilson. In 1960-61 Wilson was invited to give lectures on "modern techniques in adult education" as part of a training school for those involved in the work of developing "Co-operatives for Aborigines" which were sponsored by the…
Patrice Loïez
2001-01-01
L. to. r.: Dr. Ian Wilson, CLIC Deputy Study Leader, Prof. Ken J. Peach, Head of the Particle Physics Department, Prof. John Wood, Chief Executive Designate, Dr. Gordon Walker, Directorate, Chief Executive
Obituary: Gordon Donaldson Obituary: Gordon Donaldson
Pegrum, Colin; Campbell, Archie; Hampshire, Damian
2013-07-01
Gordon Donaldson died in Glasgow on 28 November 2012 at the age of 71. He was born in Edinburgh and brought up and educated in Glasgow, which was his home city for much of his life. He was educated first at Glasgow Academy, and then with a scholarship at Christ's College Cambridge. Here he read Natural Sciences, finishing with first class honors in Physics. He then did a PhD on tunneling in superconductors in the Mond Laboratory, supervised by John Adkins. These were interesting times, since type II superconductors had only recently been identified, and the Mond was a leading player in the physics of vortices and other quantum effects. It was headed by Pippard and Shoenberg, and colleagues around that time were Brian Josephson, John Clarke, Colin Gough and John Waldram. On finishing his PhD in 1966 Gordon went straight to a lectureship at the University of Lancaster. In 1975 during a sabbatical at the University of California, Berkeley, with John Clarke's group, Gordon co-invented thin-film gradiometers with integrated DC SQUIDs. He then moved back to Glasgow, to the Department of Applied Physics at Strathclyde University, where he founded a new research group to make and use superconducting devices, especially SQUIDs and gradiometers. From modest beginnings the group grew steadily, acquiring new facilities and members, until in the 1990s it had over 20 members and a host of collaborators from elsewhere in Glasgow and abroad. With funding from the Wellcome Trust, Gordon and colleagues at Glasgow University and the Southern General Hospital in Glasgow set up a new biomagnetism facility in 1998 on the hospital campus to use SQUID gradiometers made at Strathclyde for measurements on patients and volunteers. Another of his main research interests was the use of SQUIDs for nondestructive evaluation (NDE). This started in the days before high temperature superconductors (HTS) with wire-wound gradiometers and niobium SQUIDs, soon moving on to miniature thin-film niobium
Product Integrals and Wilson loops
Karp, R L
2001-01-01
Using product integrals we review the unambiguous mathematical representation of Wilson line and Wilson loop operators, including their behavior under gauge transformations and the non-abelian Stokes theorem. Interesting consistency conditions among Wilson lines are also presented.
Lectures on Classical Integrability
Torrielli, Alessandro
2016-01-01
We review some essential aspects of classically integrable systems. The detailed outline of the lectures consists of: 1. Introduction and motivation, with historical remarks; 2. Liouville theorem and action-angle variables, with examples (harmonic oscillator, Kepler problem); 3. Algebraic tools: Lax pairs, monodromy and transfer matrices, classical r-matrices and exchange relations, non-ultralocal Poisson brackets, with examples (non-linear Schroedinger model, principal chiral field); 4. Features of classical r-matrices: Belavin-Drinfeld theorems, analyticity properties, and lift of the classical structures to quantum groups; 5. Classical inverse scattering method to solve integrable differential equations: soliton solutions, spectral properties and the Gel'fand-Levitan-Marchenko equation, with examples (KdV equation, Sine-Gordon model). Prepared for the Durham Young Researchers Integrability School, organised by the GATIS network. This is part of a collection of lecture notes.
Academic Training; Tel. 73127
2001-01-01
ACADEMIC TRAINING LECTURE 1, 2, 3, 4 and 5 October LECTURES FOR POSTGRADUATE STUDENTS From 10:00 hrs - Main Auditorium bldg. 500 1 Introduction to particle accelerators E.J.N. Wilson / CERN-AC , Head of the CERN Accelerator School This new series of lectures is intended for anyone with a technical or scientific background who would like to become familiar with the principles of accelerator design. It is a complement to last year's course and includes new lectures on present day accelerators, and their applications as well as colliders and neutrino factories. Beam dynamics, which was treated at length in last year's course, has been compressed into one lecture, intended as revision for those who followed earlier courses and an introduction for newcomers to the field. The course should not be missed by those who will attend the CAS Intermediate Accelerator School in Seville. 1-10 10:00 Present-day Accelerators 11:00 - Beam Dynamics 2-10 10:00 Accelerating Cavities 11:00 - Non-linear Dynamics 3-10 10:00 E...
Koornwinder, T.H.
2012-01-01
Askey-Wilson polynomial refers to a four-parameter family of q-hypergeometric orthogonal polynomials which contains all families of classical orthogonal polynomials (in the wide sense) as special or limit cases.
Wilson's Disease Association International
... of Colorado and graduated with a B.S. in finance. Latest News & Announcements Search Our Site About WDA ... Help Donate Volunteer Shop Online Search the Internet Corporate Sponsorship Marketplace Copyright © 1978 - 2017 The Wilson Disease ...
Academic Training; Tel. 73127
2001-01-01
1, 2, 3, 4 and 5 October LECTURES FOR POSTGRADUATE STUDENTS From 10:00 hrs - Main Auditorium bldg. 500 1 Introduction to particle accelerators E.J.N. Wilson / CERN-AC , Head of the CERN Accelerator School This new series of lectures is intended for anyone with a technical or scientific background who would like to become familiar with the principles of accelerator design. It is a complement to last year's course and includes new lectures on present day accelerators, and their applications as well as colliders and neutrino factories. Beam dynamics, which was treated at length in last year's course, has been compressed into one lecture, intended as revision for those who followed earlier courses and an introduction for newcomers to the field. The course should not be missed by those who will attend the CAS Intermediate Accelerator School in Seville. 1-10 10:00 Present-day Accelerators 11:00 - Beam Dynamics 2-10 10:00 Accelerating Cavities 11:00 - Non-linear Dynamics 3-10 10:00 Electron Dynamics 11:00 - ...
Brzoska, A M; Negele, J W; Thies, M
2004-01-01
A phenomenological analysis of the distribution of Wilson loops in SU(2) Yang-Mills theory is presented in which Wilson loop distributions are described as the result of a diffusion process on the group manifold. It is shown that, in the absence of forces, diffusion implies Casimir scaling and, conversely, exact Casimir scaling implies free diffusion. Screening processes occur if diffusion takes place in a potential. The crucial distinction between screening of fundamental and adjoint loops is formulated as a symmetry property related to the center symmetry of the underlying gauge theory. The results are expressed in terms of an effective Wilson loop action and compared with various limits of SU(2) Yang-Mills theory.
2004 Mutagenesis Gordon Conference
Dr. Sue Jinks-Robertson
2005-09-16
Mutations are genetic alterations that drive biological evolution and cause many, if not all, human diseases. Mutation originates via two distinct mechanisms: ''vertical'' variation is de novo change of one or few bases, whereas ''horizontal'' variation occurs by genetic recombination, which creates new mosaics of pre-existing sequences. The Mutagenesis Conference has traditionally focused on the generation of mutagenic intermediates during normal DNA synthesis or in response to environmental insults, as well as the diverse repair mechanisms that prevent the fixation of such intermediates as permanent mutations. While the 2004 Conference will continue to focus on the molecular mechanisms of mutagenesis, there will be increased emphasis on the biological consequences of mutations, both in terms of evolutionary processes and in terms of human disease. The meeting will open with two historical accounts of mutation research that recapitulate the intellectual framework of this field and thereby place the current research paradigms into perspective. The two introductory keynote lectures will be followed by sessions on: (1) mutagenic systems, (2) hypermutable sequences, (3) mechanisms of mutation, (4) mutation avoidance systems, (5) mutation in human hereditary and infectious diseases, (6) mutation rates in evolution and genotype-phenotype relationships, (7) ecology, mutagenesis and the modeling of evolution and (8) genetic diversity of the human population and models for human mutagenesis. The Conference will end with a synthesis of the meeting as the keynote closing lecture.
Chaudhury, S. Raj
2011-01-01
Academic lectures for the purpose of instruction maintain an important presence in most colleges and universities worldwide. This chapter examines the current state of the lecture and how learning sciences research can inform the most effective use of this method. The author presents evidence that the lecture can be an effective element of…
Generalized sine-Gordon solitons
Santos, C dos [Centro de Fisica e Departamento de Fisica e Astronomia, Faculdade de Ciencias da Universidade do Porto, 4169-007 Porto (Portugal); Rubiera-Garcia, D, E-mail: cssilva@fc.up.pt, E-mail: rubieradiego@gmail.com [Departamento de Fisica, Universidad de Oviedo, Avenida Calvo Sotelo 18, 33007 Oviedo, Asturias (Spain)
2011-10-21
In this paper, we construct analytical self-dual soliton solutions in (1+1) dimensions for two families of models which can be seen as generalizations of the sine-Gordon system but where the kinetic term is non-canonical. For that purpose we use a projection method applied to the sine-Gordon soliton. We focus our attention on the wall and lump-like soliton solutions of these k-field models. These solutions and their potentials reduce to those of the Klein-Gordon kink and the standard lump for the case of a canonical kinetic term. As we increase the nonlinearity on the kinetic term the corresponding potentials get modified and the nature of the soliton may change, in particular, undergoing a topology modification. The procedure constructed here is shown to be a sort of generalization of the deformation method for a specific class of k-field models. (paper)
Berlin, Isaiah
2012-01-01
In this 1960 article Isaiah Berlin compares Woodrow Wilson's emphasis on the need to educate university students for life in the real world with the difference between Oxford "realism" and Cambridge "idealism" in the nineteenth century. Oxford favoured a Wilsonian preference for general education over (but not to the exclusion of) pure…
Berlin, Isaiah
2012-01-01
In this 1960 article Isaiah Berlin compares Woodrow Wilson's emphasis on the need to educate university students for life in the real world with the difference between Oxford "realism" and Cambridge "idealism" in the nineteenth century. Oxford favoured a Wilsonian preference for general education over (but not to the exclusion of) pure…
Chiral Dynamics With Wilson Fermions
Splittorff, K
2012-01-01
Close to the continuum the lattice spacing affects the smallest eigenvalues of the Wilson Dirac operator in a very specific manner determined by the way in which the discretization breaks chiral symmetry. These effects can be computed analytically by means of Wilson chiral perturbation theory and Wilson random matrix theory. A number of insights on chiral Dynamics with Wilson fermions can be obtained from the computation of the microscopic spectrum of the Wilson Dirac operator. For example, the unusual volume scaling of the smallest eigenvalues observed in lattice simulations has a natural explanation. The dynamics of the eigenvalues of the Wilson Dirac operator also allow us to determine the additional low energy constants of Wilson chiral perturbation theory and to understand why the Sharpe-Singleton scenario is only realized in unquenched simulations.
Wilson's disease in pregnancy.
Zegarac, Zana; Duić, Zeljko; Stasenko, Sandra; Partl, Jasenka Zmijanac; Valetić, Josip; Cvrlje, Vesna Colić
2013-12-01
Wilson's disease is a rare autosomal recessive disorder of copper metabolism. It causes cirrhosis of the liver, consequently followed by disorder of the menstrual cycle and infertility. Successful decopperizing may lead to restoration of the ovulatory cycle and enable pregnancy. Increased copper levels may cause preeclampsia, intrauterine growth restriction and neurologic damages in the fetus. Pregnant women with decompensated liver cirrhosis face more complications, including bleeding from esophageal varices, liver failure, encephalopathy, and rupture of the splenic artery. We present a case of Wilson's disease in a patient who had spontaneously conceived three times. The first pregnancy ended with delivery of a healthy baby at term. In second pregnancy, medically induced abortion was performed in the 12th week because of deterioration of the underlying disease, liver cirrhosis with portal hypertension. In the same year, the patient underwent liver transplantation. Two years after the transplantation, the patient spontaneously conceived and delivered vaginally a healthy child.
Wilsons Disease: Diagnostic Approach
Hakan Gelincik
2015-06-01
Full Text Available Wilson disease (WD is an autosomal recessive disorder of copper transport caused by mutations in the ATP7B gene that encodes a P-type copper ATPase, ATP7B. In WD, a mutated dysfunctional ATP7B leads to a progressive accumulation of Cu in the liver and brain. Clinically, WND shows considerable phenotypic variability including fulminant hepatic failure, hemolysis, chronic liver disease, such as hepatitis and cirrhosis, and neuro-psychiatric disease with or without hepatic involvement. An 18 -year-old female patient who has the diagnosis of Wilson s disease was referred from outside center for genetic counseling. The mutations p.M1169T was identified in the homozygous form. [Cukurova Med J 2015; 40(2.000: 345-352
Van der Veken, Frederik F
2014-01-01
Wilson lines, being comparators that render non-local operator products gauge invariant, are extensively used in QCD calculations, especially in small-$x$ calculations, calculations concerning validation of factorisation schemes and in calculations for constructing or modelling parton density functions. We develop an algorithm to express piecewise path ordered exponentials as path ordered integrals over the separate segments, and apply it on linear segments, reducing the number of diagrams needed to be calculated. We show how different linear path topologies can be related using their colour structure. This framework allows one to easily switch results between different Wilson line structures, which is especially useful when testing different structures against each other, e.g. when checking universality properties of non-perturbative objects.
Engenheiro, E; Møller, R S; Pinto, M
2008-01-01
Mowat-Wilson syndrome (MWS) is an autosomal dominant developmental disorder with mental retardation and variable multiple congenital abnormalities due to mutations of the ZEB2 (ZFHX1B) gene at 2q22. MWS was first described in 1998 and the causative gene was delineated in 2001. Since then, 115 dif...... was established only after finding of disruption of the ZEB2 gene by a balanced translocation breakpoint and an interstitial microdeletion, respectively....
Hypersialorrhea in Wilson's Disease.
Trocello, Jean-Marc; Osmani, Karima; Pernon, Michaela; Chevaillier, Gérard; de Brugière, Claire; Remy, Pascal; Wenisch, Emilie; Cousin, Catherine; Girardot-Tinant, Nadège; Woimant, France
2015-10-01
Hypersialorrhea, corresponding to excessive salivation is a symptom frequently reported in Wilson's disease, especially in its neurological form. The prevalence of this frequent complaint has not been often evaluated. During a 7-month period, 87 consecutive Wilson's disease patients answered to the simple question "do you have the sensation of excess saliva in your mouth?" to evaluate the frequency of this symptom. A sub-sample of 10 consecutive Wilson's disease patients with drooling was recruited to undergo quantitative and qualitative measures to evaluate the mechanism of hypersialorrhea. Excessive drooling or excess saliva was found in 46 % of patients followed at the French Reference Centre. Ninety-eight percent of them presented neurological symptoms and drooling was found in only one patient without neurological symptoms. Our study showed that patients with a complaint of excessive saliva produced significantly higher quantities of saliva at rest than controls. Endoscopic examination was abnormal in six patients. A significant decrease of swallowing frequency, longer swallow latencies, and poor swallowing capacities may partly explain the salivary stasis. Oropharyngeal sensitivity disorders were present in 50 % of our patients. The decrease of the swallowing frequency observed in all patients could be related to cognitive and behavioral abnormalities with initiation difficulties objectified by longer latencies triggered by all the ingested volumes. This study confirmed the hypothesis of a multifactorial origin of hypersialorrhea in patients who have been diagnosed in Wilson's disease. It was essential to evaluate drooling with a multidisciplinary consultation to better identify the underlying mechanisms and to implement strategies for speech therapy and therapeutic adaptation.
1989-01-01
C. Gordon Fullerton is a research pilot at NASA's Dryden Flight Research Center, Edwards, California. His assignments include a variety of flight research and support activities piloting NASA's B-52 launch aircraft, the 747 Shuttle Carrier Aircraft (SCA), and other multi-engine and high performance aircraft. Fullerton, who has logged 382 hours in space flight, was a NASA astronaut from September 1969 until November 1986 when he joined the Flight Crew Branch at Dryden. In July 1988, he completed a 30-year career with the U.S. Air Force and retired as a colonel. As the project pilot on the NASA B-52 launch aircraft, Fullerton flew during the first six air launches of the commercially developed Pegasus space vehicle. He was involved in a series of development air launches of the X-38 Crew Recovery Vehicle and in the Pegasus launch of the X-43A Hyper-X advanced propulsion project. Fullerton also flies Dryden's DC-8 Airborne Science aircraft, regularly deployed worldwide to support a variety of research studies, including atmospheric physics, ground mapping and meteorology. In addition to these current activities, Fullerton has been involved in numerous other research programs at Dryden. He was the project pilot on the Propulsion Controlled Aircraft program, during which he successfully landed both a modified F-15 and an MD-11 transport with all control surfaces neutralized, using only engine thrust modulation for control. Assigned to evaluate the flying qualities of the Russian Tu-144 supersonic transport during two flights in 1998, he reached a speed of Mach 2 and became one of only two non-Russian pilots to fly that aircraft. He piloted a Convair 990 modified to test space shuttle landing gear components during many very high-speed landings. Other projects for which he has flown in the past include the C-140 JetStar Laminar Flow Control; F-111 Mission Adaptive Wing; F-14 Variable Sweep Flow Transition; Space Shuttle drag chute and F-111 crew module parachute tests
Casoratian Identities for the Wilson and Askey-Wilson Polynomials
Odake, Satoru
2013-01-01
Infinitely many Casoratian identities are derived for the Wilson and Askey-Wilson polynomials in parallel to the Wronskian identities for the Hermite, Laguerre and Jacobi polynomials, which were reported recently by the present authors. These identities form the basis of the equivalence between eigenstate adding and deleting Darboux transformations for solvable (discrete) quantum mechanical systems. Similar identities hold for various reduced form polynomials of the Wilson and Askey-Wilson polynomials, e.g. the continuous q-Jacobi, continuous (dual) (q-)Hahn, Meixner-Pollaczek, Al-Salam-Chihara, continuous (big) q-Hermite, etc.
GORDON SYNDROME: A CASE REPORT
Rita
2015-03-01
Full Text Available BACKGROUND: Gordon Syndrome is an extremely rare disorder and it is part of a group of genetic disorders known as Arthrogryposis multiplex congenita. There are congenital contractures in at least two or more areas of body. Gordon Syndrome is characterized by congenital Camptodactyly, Clubfoot and Cleft Palate. CASE CHARACTERISTICS: One month female baby presented with congenital distal contra ctures in hands ( C amptodactyly, talipes equinovarus deformity in both lower limbs ( C lub feet, hyperextension of left leg at knee joint, central cleft palate, oral thrush. INTERVENTION: Treatment of oral thrush, feeding advice and physiotherapy. OUTCOME: Relieved of oral thrush, weight gain started and attached to Plastic Surgery, Orthopedic and Physiotherapy Specialties. MESSAGE: Sporadic cases of this rare disorder do occur and not many cases have been reported from India.
Bajnok, Z; Takács, G
2002-01-01
We review our recent results on the on-shell description of sine-Gordon model with integrable boundary conditions. We determined the spectrum of boundary states together with their reflection factors by closing the boundary bootstrap and checked these results against WKB quantization and numerical finite volume spectra obtained from the truncated conformal space approach. The relation between a boundary resonance state and the semiclassical instability of a static classical solution is analyzed in detail.
Green, Daniel; /SLAC /Stanford U., Dept. Phys.
2008-04-29
Gravitational theories do not admit gauge invariant local operators. We study the limits under which there exists a quasi-local description for a class of non-local gravitational observables where a sum over worldlines plays the role of the Wilson line for gauge theory observables. We study non-local corrections to the local description and circumstances where these corrections become large. We find that these operators are quasi-local in at space and AdS, but fail to be quasi-local in de Sitter space.
Supersymmetric Open Wilson Lines
Baker, Edward B
2011-01-01
In this paper we study Open Wilson Lines (OWL's) in the context of two Supersymmetric Yang Mills theories. First we consider four dimensional N=2 Supersymmetric Yang Mills Theory with hypermultiplets transforming in the fundamental representation of the gauge group, and find supersymmetric OWL's only in the superconformal versions of these theories. We then consider four dimensional N=4 SYM coupled to a three dimensional defect hypermultiplet. Here there is a semi-circular supersymmetric OWL, which is related to the ray by a conformal transformation. We perform a perturbative calculation of the operators in both theories, and discuss using localization to compute them non-perturbatively.
[Jacqueline Wilson. Tracy Beakeri sari] / Krista Kivisalu
Kivisalu, Krista, 1968-
2016-01-01
Tutvustus: Wilson, Jacqueline. Tracy Beakeri lugu. [Tallinn] : Pegasus, 2015 ; Wilson, Jacqueline. Pühadeüllatus. [Tallinn] : Pegasus, c2015 ; Wilson, Jacqueline. Julgusmäng. [Tallinn] : Pegasus, c2015
[Jacqueline Wilson. Tracy Beakeri sari] / Krista Kivisalu
Kivisalu, Krista, 1968-
2016-01-01
Tutvustus: Wilson, Jacqueline. Tracy Beakeri lugu. [Tallinn] : Pegasus, 2015 ; Wilson, Jacqueline. Pühadeüllatus. [Tallinn] : Pegasus, c2015 ; Wilson, Jacqueline. Julgusmäng. [Tallinn] : Pegasus, c2015
Wilson's disease: a diagnostic dilemma.
Nazer, H; Larcher, V F; Ede, R J; Mowat, A P; Williams, R.
1983-01-01
A 13 year old boy presented with headache, sore throat, myalgia, and fever and subsequently developed haemolytic anaemia and acute liver failure. Wilson's disease, a rare cause of acute liver failure, was diagnosed at necropsy. In such cases Wilson's disease must be diagnosed at an early stage for treatment to be effective. The most reliable indications are increased urinary and hepatic copper concentrations.
Robert Wilson og muscial formatet
Eigtved, Michael
2002-01-01
Artiklen undersøger hvordan Robert Wilson og Tom Waits' forestilling The Black Rider (1995) forholder sig til musicalkonventionerne......Artiklen undersøger hvordan Robert Wilson og Tom Waits' forestilling The Black Rider (1995) forholder sig til musicalkonventionerne...
Genetics Home Reference: Wilson disease
... body. Mutations in the ATP7B gene prevent the transport protein from functioning properly. With a shortage of functional ... GeneReview: Wilson Disease MedlinePlus Encyclopedia: Wilson's disease National Human Genome Research Institute General Information from MedlinePlus (5 ...
Guerra Montero, Luis; Ortega Álvarez, Félix; Sumire Umeres, Julia; Cok García, Jaime
2015-01-01
Wilson disease (WD) is a disorder of copper metabolism that is inherited as an autosomal recessive, which produces toxic copper accumulation mainly in the liver and brain, in general has two ways presentation, liver at early ages and neurological in later ages. We present the case of a female patient of 21 years diagnosed of WD in liver cirrhosis that started with an edematous ascites without any neurological symptoms despite the age. Their laboratory studies showed decrease in serum ceruloplasmin and high cupruria within 24 hours of the disease , characteristic data of WD. Although WD is not a common disease should be suspected in all chronic liver disease of unknown etiology with negative viral markers and autoimmunity with or without neurological manifestations as soon as posible and starting treatment with copper chelating mainly leads to a substantial improvement the prognosis of these patients.
2013-01-01
We were deeply saddened to learn that Gordon Fraser had passed away on 3 January. During his 25-year career at CERN, until his retirement in 2002, he made many valuable contributions to the Laboratory, in particular as editor of CERN Courier. Gordon’s life in science began at Imperial College London, where he obtained a PhD with the theory group of the future Nobel laureate Abdus Salam. He then spent time at Tel Aviv University in Yuval Ne’eman’s group and at Brighton University, before changing career to become a journalist, at first for Computer Weekly in London. He moved into scientific editing at the Rutherford Appleton Laboratory in 1975 and it was from there that he was hired to join the publications team at CERN in 1977. By 1982 Gordon had become the editor of the CERN Courier. During his time at the helm, both particle physics and the Courier changed considerably. Under his careful stewardship aspects of publishing were outsourced, leading to a...
Wilson's Disease and Hepatic Transplantation
唐荣华; 薛峥; 叶启发
2002-01-01
Summary: To investigate the changes in neurological symptoms and signs, as well as serum copper,serum ceruloplasmin after hepatic transplantation in patients with Wilson's disease, neurological symptoms and signs, serum copper, serum ceruloplasmin before and after hepatic transplantation in18 patients with Wilson's disease were observed, and those changes were followed up in 20 non-oper ative controls treated with penicillamine. Our results showed that the neurological symptoms and signs, serum copper and serum ceruloplasmin were improved in the operative group but deteriorated in the non-operative control group. Our study showed that hepatic transplantation is better than peni cillamine in the treatment of Wilson's disease.
Wilson's disease (hepatolenticular degeneration).
Herron, B E
1976-01-01
Wilson's disease, or hepatolenticular degeneration, is a rare inherited disorder of copper metabolism which usually affects young people. Excess copper accumulates in the tissues, primarily in the liver, brain, and cornea. This copper deposition results in a wide range of hepatic and neurological symptoms, and may produce psychiatric illness. Hepatic involvement often occurs in childhood, while neurological deficits generally are detected at a later age. The disease is inherited in an autosomal recessive fashion. Ocular findings are of particular importance because the corneal copper deposition, forming the Kayser-Fleischer ring,is the only pathognomonic sign of the disease. The structure of the ring and the presence of copper have been well established. An anterior capsular deposition of copper in the lens results in a characteristic sunflower cataract in some of these patients. Other ocular abnormalities have been described but are much less common. The pathogenesis of the disease and the basic genetic defect remain obscure. It is clear that there is excess copper in the tissues, but the mechanism of its deposition is unknown. It is in some way associated with a failure to synthesize the serum copper protein ceruloplasmin normally. Another theory suggests that an abnormal protein with a high affinity for copper may bind the metal in the tissues. The diagnosis may be suggested by the clinical manifestations and confirmed by the presence of a Kayser-Fleischer ring. In the absence of these findings biochemical determinations are necessary. The most important of these are the serum ceruloplasmin, the urinary copper, and the hepatic copper concentration on biopsy. Treatment consists in the administration of the copper chelating agent, penicillamine, and the avoidance of a high copper intake. This usually results in marked clinical improvement if irreversible tissue damage has not occurred. Maintenance therapy for life is necessary in order to continue the negative
Women and Woodrow Wilson Fellowships.
Weiss, Nancy J.
1986-01-01
Based on a presentation made at the fortieth anniversary celebration of the Woodrow Wilson National Fellowship Foundation, considers the effect these fellowships had on the scholarly careers of the women to whom they have been awarded. (Author/ABB)
Bernstein, J
1995-01-01
The series of three lectures given at Tel-Aviv University in 1992: 1. Tensor categories. 2. Quantum groups. 3. Topological (quantum) field theories. Published as the preprint IAS 897-92 of Tel-Aviv University and The Mortimer and Raymond Sacler Institute of Advanced Studies.
Mainardi Paola
2007-10-01
Full Text Available Abstract Mowat-Wilson syndrome (MWS is a multiple congenital anomaly syndrome characterized by a distinct facial phenotype (high forehead, frontal bossing, large eyebrows, medially flaring and sparse in the middle part, hypertelorism, deep set but large eyes, large and uplifted ear lobes, with a central depression, saddle nose with prominent rounded nasal tip, prominent columella, open mouth, with M-shaped upper lip, frequent smiling, and a prominent but narrow and triangular pointed chin, moderate-to-severe intellectual deficiency, epilepsy and variable congenital malformations including Hirschsprung disease (HSCR, genitourinary anomalies (in particular hypospadias in males, congenital heart defects, agenesis of the corpus callosum and eye anomalies. The prevalence of MWS is currently unknown, but 171 patients have been reported so far. It seems probable that MWS is under-diagnosed, particularly in patients without HSCR. MWS is caused by heterozygous mutations or deletions in the Zinc finger E-box-binding homeobox 2 gene, ZEB2, previously called ZFHX1B (SIP1. To date, over 100 deletions/mutations have been reported in patients with a typical phenotype; they are frequently whole gene deletions or truncating mutations, suggesting that haploinsufficiency is the main pathological mechanism. Studies of genotype-phenotype analysis show that facial gestalt and delayed psychomotor development are constant clinical features, while the frequent and severe congenital malformations are variable. In a small number of patients, unusual mutations can lead to an atypical phenotype. The facial phenotype is particularly important for the initial clinical diagnosis and provides the hallmark warranting ZEB2 mutational analysis, even in the absence of HSCR. The majority of MWS cases reported so far were sporadic, therefore the recurrence risk is low. Nevertheless, rare cases of sibling recurrence have been observed. Congenital malformations and seizures require
Garavelli, Livia; Mainardi, Paola Cerruti
2007-10-24
Mowat-Wilson syndrome (MWS) is a multiple congenital anomaly syndrome characterized by a distinct facial phenotype (high forehead, frontal bossing, large eyebrows, medially flaring and sparse in the middle part, hypertelorism, deep set but large eyes, large and uplifted ear lobes, with a central depression, saddle nose with prominent rounded nasal tip, prominent columella, open mouth, with M-shaped upper lip, frequent smiling, and a prominent but narrow and triangular pointed chin), moderate-to-severe intellectual deficiency, epilepsy and variable congenital malformations including Hirschsprung disease (HSCR), genitourinary anomalies (in particular hypospadias in males), congenital heart defects, agenesis of the corpus callosum and eye anomalies. The prevalence of MWS is currently unknown, but 171 patients have been reported so far. It seems probable that MWS is under-diagnosed, particularly in patients without HSCR. MWS is caused by heterozygous mutations or deletions in the Zinc finger E-box-binding homeobox 2 gene, ZEB2, previously called ZFHX1B (SIP1). To date, over 100 deletions/mutations have been reported in patients with a typical phenotype; they are frequently whole gene deletions or truncating mutations, suggesting that haploinsufficiency is the main pathological mechanism. Studies of genotype-phenotype analysis show that facial gestalt and delayed psychomotor development are constant clinical features, while the frequent and severe congenital malformations are variable. In a small number of patients, unusual mutations can lead to an atypical phenotype. The facial phenotype is particularly important for the initial clinical diagnosis and provides the hallmark warranting ZEB2 mutational analysis, even in the absence of HSCR. The majority of MWS cases reported so far were sporadic, therefore the recurrence risk is low. Nevertheless, rare cases of sibling recurrence have been observed. Congenital malformations and seizures require precocious clinical
Gordon honored for trail-blazing work
Naval Postgraduate School
2014-01-01
The Naval Postgraduate School & The U.S. Department of Homeland Security, Center for Homeland Defense and Security Gender bias put Ellen Gordon on an unexpected career path. She ended up blazing a trail. Gordon, a Center for Homeland Defense and Security, Naval Postgraduate School graduate and associate director, was inducted into the International Network of Women in Emergency Management and Homeland Security (inWEM) Hall of Fame during the group’s conference held i...
Samuel Alexander Kinnier Wilson. Wilson's disease, Queen Square and neurology.
Broussolle, E; Trocello, J-M; Woimant, F; Lachaux, A; Quinn, N
2013-12-01
This historical article describes the life and work of the British physician Samuel Alexander Kinnier Wilson (1878-1937), who was one of the world's greatest neurologists of the first half of the 20th century. Early in his career, Wilson spent one year in Paris in 1903 where he learned from Pierre-Marie at Bicêtre Hospital. He subsequently retained uninterrupted links with French neurology. He also visited in Leipzig the German anatomist Paul Flechsig. In 1904, Wilson returned to London, where he worked for the rest of his life at the National Hospital for the Paralysed and Epileptic (later the National Hospital for Nervous Diseases, and today the National Hospital for Neurology and Neurosurgery) in Queen Square, and also at Kings' College Hospital. He wrote on 'the old motor system and the new', on disorders of motility and muscle tone, on the epilepsies, on aphasia, apraxia, tics, and pathologic laughing and crying, and most importantly on Wilson's disease. The other objective of our paper is to commemorate the centenary of Wilson's most important work published in 1912 in Brain, and also in Revue Neurologique, on an illness newly recognized and characterized by him entitled "Progressive lenticular degeneration, a familial nervous disease associated with liver cirrhosis". He analyzed 12 clinical cases, four of whom he followed himself, but also four cases previously published by others and a further two that he considered in retrospect had the same disease as he was describing. The pathological profile combined necrotic damage in the lenticular nuclei of the brain and hepatic cirrhosis. This major original work is summarized and discussed in the present paper. Wilson not only delineated what was later called hepato-lenticular degeneration and Wilson's disease, but also introduced for the first time the terms extrapyramidal syndrome and extrapyramidal system, stressing the role of the basal ganglia in motility. The present historical work emphasizes the special
Pathogenesis and management of Wilson disease.
Harada, Masaru
2014-04-01
Hepatolenticular degeneration, commonly known as Wilson disease, is an autosomal recessive inherited disease of abnormal copper metabolism, characterized by the accumulation of copper in the body due to decreased biliary excretion of copper from hepatocytes. Wilson disease protein, ATP7B, functions in copper excretion into bile and in copper secretion to the bloodstream coupled with ceruloplasmin synthesis. Various kinds of mutations of ATP7B cause Wilson disease. Wilson disease is a rare genetic disease that can be treated pharmacologically. Recognition and prompt diagnosis are very important, because Wilson disease is fatal if left untreated. In this review, I summarize the pathogenesis and management of Wilson disease.
2011 Photochemistry Gordon Research Conference (July10-15, 2011, Stonehill College, Easton, MA)
Prof. Gerald Meyer
2011-07-15
Photochemistry has wide implications on fundamental science with technological applications that range from synthetic and mechanistic organic and inorganic chemistry to sensing/manipulation in the biological sciences to viable solar energy conversion assemblies. The 2011 Gordon Research Conference on Photochemistry will highlight recent advances on photochemical reactions, their mechanisms, spectroscopic techniques and applications to materials, organic synthesis, and biology. The conference will continue its long tradition on dynamic discussions on recent advances and unsolved scientific problems. The format of lectures, poster presentations and informal discussions provides an ideal venue for students and post-doctoral fellows to interact with the leaders in the field. These junior scientists will have an opportunity to participate in the Gordon Research Seminar on Photochemistry to be held prior to the GRC. The GRS will focus on photochemical aspects of solar energy conversion. Four abstracts for posters at the GRC and presentations at the GRS will be selected as short talks at the GRC.
Radial propagators and Wilson loops
Leupold, S; Leupold, Stefan; Weigert, Heribert
1996-01-01
We present a relation which connects the propagator in the radial (Fock-Schwinger) gauge with a gauge invariant Wilson loop. It is closely related to the well-known field strength formula and can be used to calculate the radial gauge propagator. The result is shown to diverge in four-dimensional space even for free fields, its singular nature is however naturally explained using the renormalization properties of Wilson loops with cusps and self-intersections. Using this observation we provide a consistent regularization scheme to facilitate loop calculations. Finally we compare our results with previous approaches to derive a propagator in Fock-Schwinger gauge.
Brillouin improvement for Wilson fermions
Durr, Stephan
2010-01-01
We present a parameter-free Wilson-type lattice Dirac operator with an 81-point stencil for the covariant derivative and the Laplacian which attempts to minimize the breaking of rotational symmetry near the boundary of the Brillouin zone. The usefulness of this "Brillouin operator" in practical applications is explored by studying the scaling of pseudoscalar decay constants in quenched QCD, with rather good results in the physical charm region. We also investigate the suitability of this operator as a kernel to the overlap procedure. Here, the resulting overlap operator is found to be cheaper to construct and significantly better localized than the variety with the standard Wilson kernel.
Exact Answers to Approximate Questions Noncommutative Dipoles, Open Wilson Lines, and UV-IR Duality
Rey, S J
2002-01-01
In this lecture, I put forward conjectures asserting that, in all noncommutative field theories, (1) open Wilson lines and their descendants constitute a complete set of interpolating operators of `noncommutative dipoles', obeying dipole relation, (2) infrared dynamics of the noncommutative dipoles is dual to ultraviolet dynamics of the elementary noncommutative fields, and (3) open string field theory is a sort of noncommutative field theory, whose open Wilson lines are interpolating operators for closed strings. I substantiate these conjectures by various intuitive arguments and explicit computations of one- and two-loop Feynman diagrammatics.
J. O. Stenflo
2000-09-01
This summary lecture makes no attempt to summarize what was actually said at the meeting, since this is well covered by the other contributors. Instead I have structured my presentation in three parts: First I try to demonstrate why the Sun is unique by comparing it with laboratory plasmas. This is followed by some personal reminiscences that go back a significant fraction of the century. I conclude in the form of a poem about this memorable conference in honor of the centennial anniversary of the Kodaikanal Observatory.
Befriending Askey-Wilson polynomials
Szabłowski, Paweł J
2011-01-01
Although our main interest is with the Askey-Wilson (AW) polynomials we recall and review four other families of the so-called Askey-Wilson scheme of polynomials. We do this for completeness as well as for better exposition of AW properties. Our main results concentrate on the complex parameters case, revealing new fascinating symmetries between the variables and some of the parameters. In particular we express Askey-Wilson polynomials as linear combinations of Al-Salam--Chihara (ASC) polynomials which together with the obtained earlier expansion of the Askey-Wilson density forms complete generalization of the situation met in the case of Al-Salam--Chihara and q-Hermite polynomials and the Poisson-Mehler expansion formula. As a by-product we get useful identities involving ASC polynomials. Finally by certain re-scaling of variables and parameters we arrive to AW polynomials and AW densities that have clear probabilistic interpretation. We recall some known and present some believed to be unknown identities an...
Population screening for Wilson's disease.
Hahn, Si Houn
2014-05-01
Wilson's disease is an autosomal recessive disorder of copper transport caused by mutations in the gene encoding an ATPase, ATP7B. Early detection of Wilson's disease is critical because effective medical treatments such as chelating agents and zinc salts are available, which can prevent lifelong neurological disabilities and/or cirrhosis. It is unfortunate that most patients are brought to our attention after they have developed serious complications such as brain damage or cirrhosis, despite the availability of effective treatments. The diagnosis is usually made through copper measurement in the liver tissue, followed by confirmation with genetic testing of the ATP7B gene. Currently, there are no effective biomarkers or methods suitable for newborn screening for Wilson's disease. Ceruloplasmin has been tested for pediatric and newborn screening with limited outcome. Recently, liquid chromatography-multiple reaction monitoring-mass spectrometry (LC-MRM-MS) has emerged as a robust technology that may enable multiplex quantification of signature proteotypic peptides with low abundance. The application of this technology may help facilitate the research on Wilson's disease for protein expression, biomarker study, diagnosis, and, hopefully, screening.
How Is Wilson Disease Inherited?
... nationalities has the disease. Of the 23 different human chromosomes, the gene responsible for Wilson disease is located on chromosome 13. The gene is called ATP7B and it contains the genetic information necessary to make a copper transport protein that plays a key role in incorporating copper ...
Ken Wilson: Solving the Strong Interactions
Peskin, Michael E
2014-01-01
Ken Wilson's ideas on the renormalization group were shaped by his attempts to build a theory of the strong interactions based on the concepts of quantum field theory. I describe the development of his ideas by reviewing four of Wilson's most important papers. [contribution to the Journal of Statistical Physics Special Issue in Memory of K. G. Wilson
Gravity localization in sine-Gordon braneworlds
Cruz, W T; Sousa, L J S; Almeida, C A S
2016-01-01
In this work we study two types of five-dimensional braneworld models given by sine-Gordon potentials. In both scenarios, the thick brane is generated by a real scalar field coupled to gravity. We focus our investigation on the localization of graviton field and the behaviour of the massive spectrum. In particular, we analyse the localization of massive modes by means of a relative probability method in a Quantum Mechanics context. Initially, considering a scalar field sine-Gordon potential, we find a resonance to the graviton at zero mode. However, when we consider a double sine-Gordon potential, the brane structure is changed allowing the existence of massless and massive resonant states. The new results show how the existence of an internal structure can aid in the emergence of massive resonant modes on the brane.
Gravity localization in sine-Gordon braneworlds
Cruz, W.T., E-mail: wilamicruz@gmail.com [Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE), Campus Juazeiro do Norte, 63040-540 Juazeiro do Norte, Ceará (Brazil); Maluf, R.V., E-mail: r.v.maluf@fisica.ufc.br [Departamento de Física, Universidade Federal do Ceará (UFC), C.P. 6030, 60455-760 Fortaleza, Ceará (Brazil); Sousa, L.J.S., E-mail: luisjose@fisica.ufc.br [Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE), Campus Canindé, 62700-000 Canindé, Ceará (Brazil); Almeida, C.A.S., E-mail: carlos@fisica.ufc.br [Departamento de Física, Universidade Federal do Ceará (UFC), C.P. 6030, 60455-760 Fortaleza, Ceará (Brazil)
2016-01-15
In this work we study two types of five-dimensional braneworld models given by sine-Gordon potentials. In both scenarios, the thick brane is generated by a real scalar field coupled to gravity. We focus our investigation on the localization of graviton field and the behaviour of the massive spectrum. In particular, we analyse the localization of massive modes by means of a relative probability method in a Quantum Mechanics context. Initially, considering a scalar field sine-Gordon potential, we find a localized state to the graviton at zero mode. However, when we consider a double sine-Gordon potential, the brane structure is changed allowing the existence of massive resonant states. The new results show how the existence of an internal structure can aid in the emergence of massive resonant modes on the brane.
Cerebral imaging for Wilson disease; Zerebrale Bildgebung bei Morbus Wilson
Andersen, K.; Saleh, A. [Universitaetsklinikum Duesseldorf (Germany). Inst. fuer Diagnostische Radiologie; Suedmeyer, M. [Universitaetsklinikum Duesseldorf (Germany). Klinik fuer Neurologie
2007-03-15
Wilson disease is an autosomal recessive inherited copper metabolic disorder that is characterized by diminished biliary excretion of copper and a raised serum level of free copper. This leads to a toxic copper accumulation, particularly in the liver and the brain. Therefore, clinical symptoms are dominated by hepatic and extrapyramidal symptoms. Untreated Wilson disease has an unfavorable outcome. Cerebral changes are depicted most sensitively by magnetic resonance tomography. Pathological findings mainly focus on the basal ganglia, the midbrain and the brainstem. Depending on the therapy and the severity of the neurological symptoms, signal increase as well as signal decrease may be observed in T1-weighted (T1w) and T2-weighted (T2w) images and can be reversible when using an appropriate therapy. Hyperintense areas in T2-weighted images are induced by edema, gliosis, demyelinisation or cystic degeneration. Signal increase in T1-weighted images are found in patients with hepatic insufficiency and are probably due to manganese deposits. Signal decrease in T2-weighted images is probably caused by the paramagnetic effect of the copper accumulation. Furthermore, recent studies show a correlation between the clinical severity and changes in diffusion-weighted sequences. Although cross-section imaging plays a rather subordinate role in the primary diagnostics of Wilson disease, the described cerebral changes in patients with extrapyramidal disturbances should include Wilson disease in the differential. Persistent or progressive hyperintense lesions in T2-weighted images reflect therapy failure, and clinical recovery correlates to an improvement in MR images. Therefore, repeat MR imaging can be used to monitor medical therapy.
Wilson's Disease Presenting With Pancytopenia
Acıpayam, Can; Altunay, Ali; Nilüfer İLHAN; Atçı, Nesrin
2015-01-01
Wilson’s disease is an autosomal recessive disorder of copper metabolism characterized by excessive amount of copper in liver, brain, eye and other body tissues. Diagnosis is based on the presence of Kayser-Fleischer rings, typical neurological symptoms, and/or a low serum ceruloplasmin concentration. The main clinical symptoms are usually due to hepatic and/or neurologic involvement. Pancytopenia is a rare initial symptom of Wilson Disease. An 11-year-old female presented with pancytopenia. ...
Continuous smearing of Wilson Loops
Lohmayer, Robert
2011-01-01
Continuum smearing was introduced in section 4.1 of JHEP03, 064 (2006) as a meaningful continuum analogue of the well known set of lattice techniques by the same name. Here we apply continuous smearing in continuous space-time to Wilson loops in order to clarify what it does in the context of field theory and also in the context of the loop calculus of the Makeenko-Migdal equation.
Wilson's disease: An endocrine revelation
Kapoor, Nitin; Shetty, Sahana; Thomas, Nihal; Paul, Thomas Vizhalil
2014-01-01
Wilson's disease is an inherited disorder of copper metabolism. The affected patients, who otherwise have a near normal life span, may often suffer from some potentially treatable and under recognized endocrine disorders that may hinder their quality of life. We explored previously published literature on the various endocrine aspects of this disease with their probable underlying mechanisms, highlighting the universal need of research in this area. PMID:25364683
[Wilson's disease - a case report].
Karwowska, Kornelia; Skrzypek, Julita; Chabik, Grzegorz; Członkowska, Anna; Zaborowska, Marzena; Wawrzyniak, Sławomir
2016-01-01
Wilson's disease (WD) or hepatolenticular degeneration, is a rare autosomal recessive genetic disorder caused by mutations in the Wilson disease protein (ATP7B) gene. It is characterized by impaired copper metabolism leading to its accumulation in various tissues and organs, including the liver and central nervous system, this results in the development of characteristic liver disease and neuropsychiatric symptoms. Liver symptoms usually appear during first three decades of life, while psychiatric symptoms are observed in people who are in their twenties or older. WD is one of few genetic diseases that can be effectively treated with pharmacotherapy. However, some cases, especially diagnosed late in the course of the disease, may not respond well to treatment. Here we present a case of a 22-year-old male with neurological, psychiatric and liver disease symptoms as an example of diagnostic and therapeutic challenges in patients. Wilson's disease (WD) should be considered in all patients presenting with neurological, psychiatric and liver disease symptoms especially those of young age.
Haplotype studies in Wilson disease
Thomas, G.R.; Bull, P.C.; Roberts, E.A.; Cox, D.W.; Walshe, J.M. (Univ. of Toronto (Canada))
1994-01-01
In 51 families with Wilson disease, the authors have studied DNA haplotypes of dinucleotide repeat polymorphisms (CA repeats) in the 13q14.3 region, to examine these markers for association with the Wilson disease gene (WND). In addition to a marker (D13S133) described elsewhere, the authors have developed three new highly polymorphic markers (D13S314, D13S315, and D13S316) close to the WND locus. The authors have examined the distribution of marker alleles at the loci studied and have found that D13S314, D13S133, and D13S316 each show nonrandom distribution on chromosomes carrying the WND mutation. The authors have studied haplotypes of these three markers and have found that there are highly significant differences between WND and normal haplotypes in northern European families. These findings have important implications for mutation detection and molecular diagnosis in families with Wilson disease. 25 refs., 2 figs., 5 tabs.
Dilogarithm Identities for Sine-Gordon and Reduced Sine-Gordon Y-Systems
Tomoki Nakanishi
2010-10-01
Full Text Available We study the family of Y-systems and T-systems associated with the sine-Gordon models and the reduced sine-Gordon models for the parameter of continued fractions with two terms. We formulate these systems by cluster algebras, which turn out to be of finite type, and prove their periodicities and the associated dilogarithm identities which have been conjectured earlier. In particular, this provides new examples of periodicities of seeds.
Gordon Research Conference on Chronobiology, 1991
1992-07-31
Bromage (Univ. of Stirling) Elena Thomas (Berkeley) Fred Karsch (Ann Arbor) Gordon Conference on Chronobiology 1991 Irsee, Germany/September 29...Berkeley) Fred Karsch (Ann Arbor) Acee’.sin For ; D Iqt. C Dilst S 7o;;a I~ : Ijj I
Catatonia: an unusual manifestation of Wilson's disease.
Basu, Aniruddha; Thanapal, Sivakumar; Sood, Mamta; Khandelwal, Sudhir K
2015-01-01
Wilson's disease, characterized by abnormal copper accumulation in the human body, may present with psychiatric manifestations in about one-fifth of patients. The authors report a patient with Wilson's disease who initially presented with acute psychosis and later developed catatonic symptoms. The atypical presentation led to a delay in diagnosis and institution of appropriate treatment. Wilson's disease can be ruled out in all young patients presenting with psychiatric symptoms for the first time by screening for a Kayser-Fleischer ring.
Cholestatic liver disease masquerading as Wilson disease.
Sood, Vikrant; Rawat, Dinesh; Khanna, Rajeev; Alam, Seema
2015-03-01
Wilson disease and cholestatic liver diseases may present as a diagnostic dilemma if standard guidelines incorporating markers of copper overload are followed. We hereby present a series of four cases of sclerosing cholangitis masquerading as Wilson disease. True Wilson disease cases had significantly lower ceruloplasmin (6 vs. 16 mg/dL) and higher 24-hour urinary copper (322.3 vs. 74.5 μg/day) as compared to mimickers. Initial low serum ceruloplasmin levels normalized in mimickers on follow up, and this may used as a diagnostic indicator. Standard Wilson disease diagnostic criteria thus need further modification especially in developing countries to help avoid mismanagement.
许炽华; 沈时霖
1989-01-01
@@ Wilson-Mikity综合征(简称WMS),是发生在极低体重儿的一种慢性呼吸困难疾病.1960年首次由美国的Wilson和Mikity所报道,后为世界各国公认,并以此命名[1～3].本病为一种独立疾病,长期来病因不明,近年来日本有较多的研究并证明与胎儿宫内感染有关[2～4].
2008-01-01
Gordon Lennox Munday, one of the leading figures in CERN accelerator physics, passed away on 28 July. Gordon Munday first came to CERN in 1955 where he joined the team led by John Adams responsible for building CERN’s Proton Synchrotron, the PS. He was put in charge of the construction of the vacuum system for the future accelerator. Shortly after the start-up of the PS, he created a group with the task of assisting user physicists to prepare and carry out their experiments. His team managed the experimental areas, and designed, set up and operated the beams in which the physicists installed their experiments at the facility. This activity was crucial since it entailed implementing the experimental programme decided by the Management as well as possible while taking account of the technical constraints specified by the accelerator engineers and meeting the physicists’ sometimes contradictory requirements. The third phase of hi...
Quarkonium spectroscopy by Klein-Gordon equation
Haghighat, M; Dadkhah, A
2000-01-01
A model is proposed to obtain the q q spectra by using a generalized Klein-Gordon equation for a two-body system. A variety of different potentials are coupled to the mass term of the generalized equation. The eigenvalues and the corresponding mass spectra are evaluated by using numerical and analytical methods. The resulting spectra match dosely with experimental data. The obtained values are also compared with those of models such as quasipotential equation (Q PE).
Klein-Gordon and Dirac gyroscopes
SadurnI, E [Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Cuernavaca, Morelos (Mexico)], E-mail: sadurni@fis.unam.mx
2009-01-09
The formulation of a rigid body in relativistic quantum mechanics is studied. Departing from an alternate approach at the relativistic classical level, the corresponding Klein-Gordon and Dirac operators for the rigid body are obtained in covariant form. The resulting wave equations are shown to be consistent, by construction, with earlier definitions of a relativistic rigid body by Aldinger et al (1983 Phys. Rev. D 28 3020). Wavefunctions and spectra for both cases are obtained explicitly, including the Dirac gyroscope with asymmetries.
Exact renormalization group and Sine Gordon theory
Oak, Prafulla; Sathiapalan, B.
2017-07-01
The exact renormalization group is used to study the RG flow of quantities in field theories. The basic idea is to write an evolution operator for the flow and evaluate it in perturbation theory. This is easier than directly solving the differential equation. This is illustrated by reproducing known results in four dimensional ϕ 4 field theory and the two dimensional Sine-Gordon theory. It is shown that the calculation of beta function is somewhat simplified. The technique is also used to calculate the c-function in two dimensional Sine-Gordon theory. This agrees with other prescriptions for calculating c-functions in the literature. If one extrapolates the connection between central charge of a CFT and entanglement entropy in two dimensions, to the c-function of the perturbed CFT, then one gets a value for the entanglement entropy in Sine-Gordon theory that is in exact agreement with earlier calculations (including one using holography) in arXiv:1610.04233.
Kragh, Helge
2010-01-01
Sammendrag af "Industry Lecture", Norsk Kjemisk Selskap, Universitetet i Oslo, givet 15/10 2010.......Sammendrag af "Industry Lecture", Norsk Kjemisk Selskap, Universitetet i Oslo, givet 15/10 2010....
Kragh, Helge
2010-01-01
Sammendrag af "Industry Lecture", Norsk Kjemisk Selskap, Universitetet i Oslo, givet 15/10 2010.......Sammendrag af "Industry Lecture", Norsk Kjemisk Selskap, Universitetet i Oslo, givet 15/10 2010....
Johnstone, A. H.; Percival, F.
1976-01-01
Describes research into student attention patterns during lectures that suggests that student attention declines steadily during a lecture, and that the rate of decrease is dependent upon several variables including subject difficulty. (MLH)
Wilson lines in quantum field theory
Cherednikov, Igor O; Veken, Frederik F van der
2014-01-01
The objective of this book is to get the reader acquainted with theoretical and mathematical foundations of the concept of Wilson loops in the context of modern quantum field theory. It teaches how to perform independently with some elementary calculations on Wilson lines, and shows the recent development of the subject in different important areas of research.
Wade Wilson Controls NFL Defenses, Diabetes.
Thompson, K
1989-12-01
When Minnesota Vikings quarterback Wade Wilson was diagnosed with diabetes just days before the 1985 season, he scrambled to learn how to manage the disease. With his health-and perhaps his career-hanging in the balance, Wilson deftly made the life-style changes necessary to continue play.
LATTICE QCD THERMODYNAMICS WITH WILSON QUARKS.
EJIRI,S.
2007-11-20
We review studies of QCD thermodynamics by lattice QCD simulations with dynamical Wilson quarks. After explaining the basic properties of QCD with Wilson quarks at finite temperature including the phase structure and the scaling properties around the chiral phase transition, we discuss the critical temperature, the equation of state and heavy-quark free energies.
The Fading Legacy of Woodrow Wilson.
Martin, Daniel W.
1988-01-01
Reexamines Woodrow Wilson's contribution to public administration and arrives at four conclusions: (1) the study of public administration was developed in Europe; (2) Wilson's politics/administration dichotomy was different than the European model; (3) his dichotomy was based on an incorrect translation and abandoned; and (4) his dichotomy was…
Wilson's disease; increased aluminum in liver.
Yasui, M; Yoshimasu, F; Yase, Y; Uebayashi, Y
1979-01-01
Interaction of trace metal metabolism was studied in a patient with Wilson's dease. Atomic absorption analysis showed markedly increased urinary excretion of copper and aluminum and an increased aluminum content was found in the biopsied liver by neutron activation analysis. These findings suggest a complicated pathogenetic mechanism involving other metals besides copper in the Wilson's disease.
Silvestre Cerdà, Joan Albert; Del Agua Teba, Miguel Angel; Garcés Díaz-Munío, Gonzalo Vicente; GASCÓ MORA, GUILLEM; Giménez Pastor, Adrián; Martínez-Villaronga, Adrià Agustí; Pérez González de Martos, Alejandro Manuel; Sánchez-Cortina, Isaías; Serrano Martínez-Santos, Nicolás; Spencer, Rachel Nadine; Valor Miró, Juan Daniel; Andrés Ferrer, Jesús; Civera Saiz, Jorge; Sanchis Navarro, José Alberto; Juan Císcar, Alfonso
2012-01-01
transLectures (Transcription and Translation of Video Lectures) is an EU STREP project in which advanced automatic speech recognition and machine translation techniques are being tested on large video lecture repositories. The project began in November 2011 and will run for three years. This paper will outline the project¿s main motivation and objectives, and give a brief description of the two main repositories being considered: VideoLectures.NET and poliMedia. The first re...
The link between copper and Wilson's disease.
Purchase, Rupert
2013-01-01
Wilson's disease (hepatolenticular degeneration) is a rare inherited autosomal recessive disorder of copper metabolism leading to copper accumulation in the liver and extrahepatic organs such as the brain and cornea. Patients may present with combinations of hepatic, neurological and psychiatric symptoms. Copper is the therapeutic target for the treatment of Wilson's disease. But how did copper come to be linked with Wilson's disease? The answer encompasses a study of enzootic neonatal ataxia in lambs in the 1930s, the copper-chelating properties of British Anti-Lewisite, and the chemical analysis for copper of the organs of deceased Wilson's disease patients in the mid-to-late 1940s. Wilson's disease is one of a number of copper-related disorders where loss of copper homeostasis as a result of genetic, nutritional or environmental factors affects human health.
Laughter in University Lectures
Nesi, Hilary
2012-01-01
This paper analyses laughter in spoken academic discourse, with the aim of discovering why lecturers provoke laughter in their lectures. A further purpose of the paper is to identify episodes in British data which may differ from those in other cultural contexts where other lecturing practices prevail, and thus to inform the design of study skills…
Time-Periodic Einstein--Klein--Gordon Bifurcations of Kerr
Chodosh, Otis
2015-01-01
We construct one-parameter families of solutions to the Einstein--Klein--Gordon equations bifurcating off the Kerr solution such that the underlying family of spacetimes are each an asymptotically flat, stationary, axisymmetric, black hole spacetime, and such that the corresponding scalar fields are non-zero and time-periodic. An immediate corollary is that for these Klein--Gordon masses, the Kerr family is not asymptotically stable as a solution to the Einstein--Klein--Gordon equations.
Lectures on S-matrices and Integrability
Bombardelli, Diego
2016-01-01
In these notes we review the S-matrix theory in (1+1)-dimensional integrable models, focusing mainly on the relativistic case. Once the main definitions and physical properties are introduced, we discuss the factorization of scattering processes due to integrability. We then focus on the analytic properties of the 2-particle scattering amplitude and illustrate the derivation of the S-matrices for all the possible bound states using the so-called bootstrap principle. General algebraic structures underlying the S-matrix theory and its relation with the form factors axioms are briefly mentioned. Finally, we discuss the S-matrices of sine-Gordon and SU(2), SU(3) chiral Gross-Neveu models. This is part of a collection of lecture notes for the Young Researchers Integrability School, organised by the GATIS network at Durham University on 6-10 July 2015.
Klein-Gordon oscillators in noncommutative phase space
WANG Jian-Hua; LI Kang; Dulat Sayipjamal
2008-01-01
We study the Klein-Gordon oscillators in non-commutative (NC) phase space.We find that the Klein-Gordon oscillators in NC space and NC phase-space have a similar behaviour to the dynamics of a particle in commutative space moving in a uniform magnetic field.By solving the Klein-Gordon equation in NC phase space,we obtain the energy levels of the Klein-Gordon oscillators,where the additional terms related to the space-space and momentum-momentum non-commutativity are given explicitly.
Liver transplantation for Wilson's disease.
Schilsky, Michael L
2014-05-01
Although Wilsons's disease (WD) may be treated with copper chelation (to remove copper) or zinc salts (to prevent absorption) to alleviate or prevent symptom development in most patients, there are WD patients for whom medical therapy is inadequate and survival would be unlikely without liver transplantation. Liver transplantation is indicated for the ∼5% of WD patients with acute liver failure as the first presentation of disease, most commonly in the second decade of life, or those who present with end-stage liver disease and severe hepatic insufficiency, most commonly in the third and fourth decades. Liver transplantation restores normal biliary copper excretion (thereby preventing disease recurrence) and promotes removal of copper from extrahepatic sites. Outcomes of liver transplantation for WD are excellent, including both cadaveric and living donors.
Wilson loops with arbitrary charges
Korcyl, Piotr; Wosiek, Jacek
2014-01-01
We discuss how to implement, in lattice gauge theories, external charges which are not commensurate with an elementary gauge coupling. It is shown that an arbitrary, real power of a standard Wilson loop (or Polyakov line) can be defined and consistently computed in lattice formulation of non-abelian, two dimensional gauge theories. However, such an observable can excite quantum states with integer fluxes only. Since the non-integer fluxes are not in the spectrum of the theory they cannot be created, no matter which observable is chosen. Also the continuum limit of above averages does not exist unless the powers in question are in fact integer. On the other hand, a new continuum limit exists, which is rather intuitive, and where above observables make perfect sense and lead to the string tension proportional to the square of arbitrary (non necessary commensurate with gauge coupling) charge.
陈煐光
2002-01-01
@@ 在为数不多的英国高级音箱厂家之中,Wilson Benesch是最富创新意念和最讲究校声技艺的一家.厂方将碳纤这种物质运用在Hi-Fi器材之中得到很大的成功.他们用碳纤混合素材来制造的盘臂头组合Act 1+Act 2被誉为世上最靓声的LP唱片重播组合之一,而用碳纤制作部分声箱的处女作Act One更在数年前面世之后轰动音响界,其真实无匹的小提琴声和无穷尽的音乐感赢得不少高级音响玩家的钟爱.
Kenneth Wilson and lattice QCD
Ukawa, Akira
2015-01-01
We discuss the physics and computation of lattice QCD, a space-time lattice formulation of quantum chromodynamics, and Kenneth Wilson's seminal role in its development. We start with the fundamental issue of confinement of quarks in the theory of the strong interactions, and discuss how lattice QCD provides a framework for understanding this phenomenon. A conceptual issue with lattice QCD is a conflict of space-time lattice with chiral symmetry of quarks. We discuss how this problem is resolved. Since lattice QCD is a non-linear quantum dynamical system with infinite degrees of freedom, quantities which are analytically calculable are limited. On the other hand, it provides an ideal case of massively parallel numerical computations. We review the long and distinguished history of parallel-architecture supercomputers designed and built for lattice QCD. We discuss algorithmic developments, in particular the difficulties posed by the fermionic nature of quarks, and their resolution. The triad of efforts toward b...
Monitoring copper in Wilson's disease.
Walshe, J M
2010-01-01
Monitoring copper metabolism in patients with Wilson's disease is not an exact science. At present, there are no simple methods of estimating the total body load of this metal. Indirect methods must therefore be used. A survey of the current literature shows that most approaches rely on the determination of blood and urine copper concentration. Both these should decrease with treatment. In parallel with decreased copper concentration, there should be subsequent improvement in more routine laboratory tests including liver and renal function, blood count parameters, and clotting factors. Lack of compliance is revealed by a reversal of this trend. This chapter critically reviews current testing methods and describes other approaches that may be helpful.
Cognitive impairment in Wilson's disease
Norberto Anizio Ferreira Frota
Full Text Available Abstract Wilson's disease (WD or hepatolenticular degeneration is a rare, genetic and systemic disease, caused by a deficit in the metabolism of copper, leading to its accumulation in different organs, mainly the liver, followed by the central nervous system, especially the basal ganglia. When symptoms begin between the second and third decades of life, approximately 50% of the patients show neurological symptoms. Although dystonia and dysarthria are the most common neurological signs, cognitive changes have been reported since the first cases were described in 1912. Memory change is one of the most common impairments, but other cognitive changes have been reported, including dementia in untreated cases. In this article we review the cognitive changes in WD patients and the occurrence of dementia.
Travelling Wave Solutions to the m-KdV-Sine-Gordon Equation and the m-KdV-Sinh-Gordon Equation
LI Er-qiang; CHEN Jin-lan
2013-01-01
By using the function transformation and proper Sub-ODE,exact travelling wave solutions of the m-KdV-Sine-Gordon and the m-KdV-Sinh-Gordon equation are obtained,from which exact travelling wave solutions of the m-KdV equation,the Sine-Gordon equation and the Sinh-Gordon equation are derived.
Wilson's disease and other neurological copper disorders.
Bandmann, Oliver; Weiss, Karl Heinz; Kaler, Stephen G
2015-01-01
The copper metabolism disorder Wilson's disease was first defined in 1912. Wilson's disease can present with hepatic and neurological deficits, including dystonia and parkinsonism. Early-onset presentations in infancy and late-onset manifestations in adults older than 70 years of age are now well recognised. Direct genetic testing for ATP7B mutations are increasingly available to confirm the clinical diagnosis of Wilson's disease, and results from biochemical and genetic prevalence studies suggest that Wilson's disease might be much more common than previously estimated. Early diagnosis of Wilson's disease is crucial to ensure that patients can be started on adequate treatment, but uncertainty remains about the best possible choice of medication. Furthermore, Wilson's disease needs to be differentiated from other conditions that also present clinically with hepatolenticular degeneration or share biochemical abnormalities with Wilson's disease, such as reduced serum ceruloplasmin concentrations. Disordered copper metabolism is also associated with other neurological conditions, including a subtype of axonal neuropathy due to ATP7A mutations and the late-onset neurodegenerative disorders Alzheimer's disease and Parkinson's disease.
2011 Clusters, Nanocrystals & Nanostructures Gordon Research Conference
Lai-Sheng Wang
2011-07-29
Small particles have been at the heart of nanoscience since the birth of the field and now stand ready to make significant contributions to the big challenges of energy, health and sustainability. Atomic clusters show exquisite size-dependent electronic and magnetic properties and offer a new level of control in catalyses, sensors and biochips; functionalised nanocrystals offer remarkable optical properties and diverse applications in electronic devices, solar energy, and therapy. Both areas are complemented by a raft of recent advances in fabrication, characterization, and performance of a diversity of nanomaterials from the single atom level to nanowires, nanodevices, and biologically-inspired nanosystems. The goal of the 2011 Gordon Conference is thus to continue and enhance the interdisciplinary tradition of this series and discuss the most recent advances, fundamental scientific questions, and emerging applications of clusters, nanocrystals, and nanostructures. A single conference covering all aspects of nanoscience from fundamental issues to applications has the potential to create new ideas and stimulate cross fertilization. The meeting will therefore provide a balance among the three sub-components of the conference, true to its title, with a selection of new topics added to reflect rapid advances in the field. The open atmosphere of a Gordon conference, emphasizing the presentation of unpublished results and extensive discussions, is an ideal home for this rapidly developing field and will allow all participants to enjoy a valuable and stimulating experience. Historically, this Gordon conference has been oversubscribed, so we encourage all interested researchers from academia, industry, and government institutions to apply as early as possible. We also encourage all attendees to submit their latest results for presentation at the poster sessions. We anticipate that several posters will be selected for 'hot topic' oral presentations. Given the
Sunflower cataract: do not forget Wilson's disease.
Litwin, Tomasz; Langwińska-Wośko, Ewa; Dzieżyc, Karolina; Członkowska, Anna
2015-10-01
A 41-year-old man with liver cirrhosis of unknown aetiology for 6 years was admitted to our department to confirm the diagnosis of Wilson's disease. He consulted an ophthalmologist who suspected the presence of a sunflower cataract and Kayser-Fleischer ring. At admission, his liver function tests were modestly impaired (Child-Pugh C, 10 pts). Neurological examination was normal, but cognitive functions were mildly impaired. Based on the copper metabolism abnormalities and clinical manifestation, we diagnosed Wilson's disease (Ferenci score, 6 pts) and started treatment with d-penicillamine. Presenting the case we would like to emphasise the significance of the ophthalmological examination in Wilson's disease diagnosis.
Wilson Loop Form Factors: A New Duality
Chicherin, Dmitry; Heslop, Paul; Korchemsky, Gregory P.; Sokatchev, Emery
2016-01-01
We find a new duality for form factors of lightlike Wilson loops in planar $\\mathcal N=4$ super-Yang-Mills theory. The duality maps a form factor involving an $n$-sided lightlike polygonal super-Wilson loop together with $m$ external on-shell states, to the same type of object but with the edges of the Wilson loop and the external states swapping roles. This relation can essentially be seen graphically in Lorentz harmonic chiral (LHC) superspace where it is equivalent to planar graph duality....
Renormalization of Wilson operators in Minkowski space
Andra, A
1996-01-01
We make some comments on the renormalization of Wilson operators (not just vacuum -expectation values of Wilson operators), and the features which arise in Minkowski space. If the Wilson loop contains a straight light-like segment, charge renormalization does not work in a simple graph-by-graph way; but does work when certain graphs are added together. We also verify that, in a simple example of a smooth loop in Minkowski space, the existence of pairs of points which are light-like separated does not cause any extra divergences.
2010 Tetrapyrroles, Chemistry & Biology of Gordon Research Conference
Angela Wilks
2010-07-30
The objective of the Chemistry & Biology of Tetrapyrroles Gordon Conference is to bring together researchers from diverse disciplines that otherwise would not interact. By bringing biologists, chemists, engineers and clinicians with a common interest in tetrapyrroles the conference provides a forum for cross-disciplinary ideas and collaboration. The perspective provided by biologists, chemists, and clinicians working in fields such as newly discovered defects in human porphyrin metabolism, the myriad of strategies for light harvesting in photosynthetic organisms, novel tetrapyrroles that serve as auxiliary chromophores or enzyme cofactors, synthetic strategies in the design of novel tetrapyrrole scaffolds, and tetrapyrrole based cell signaling and regulatory systems, makes this conference unique in the field. Over the years the growing evidence for the role of tetrapyrroles and their reactive intermediates in cell signaling and regulation has been of increasing importance at this conference. The 2010 conference on Chemistry & Biology of Tetrapyrroles will focus on many of these new frontiers as outlined in the preliminary program listed. Speakers will emphasize unpublished results and new findings in the field. The oral sessions will be followed by the highly interactive afternoon poster sessions. The poster sessions provide all conferees with the opportunity to present their latest research and to exchange ideas in a more informal setting. As in the past, this opportunity will continue during the nightly social gathering that takes place in the poster hall following the evening lectures. All conferees are encouraged to submit and present posters. At the conference the best poster in the areas of biology, chemistry and medicine will be selected by a panel of previous conference chairs.
Quakonium spectroscopy by Klein-Gordon equation
M. Haghighat B Mirza
2000-06-01
Full Text Available A model is proposed to obtain the qq spectra by using a generalized Klein-Gordon equation for a two-body system. A variety of different potentials are coupled to the mass term of the generalized equation. The eigenvalues and the corresponding mass spectra are evaluated by using numerical and analytical methods. The resulting spectra match dosely with the experimental data. The obtained values are also compared with those of models such as quasipotential equation (QPE.
Obituary: Peter Robert Wilson, 1929-2007
Snodgrass, Herschel B.
2009-01-01
It is with great sadness that I report the passing of Peter Robert Wilson, a well-known and well-loved figure in the solar physics community. Peter was on the faculty of the Department of Applied Mathematics at the University of Sydney for 39 years, and Chair of the department for 24 of these years. He was the author or co-author of more than 80 scientific research papers and a book, Solar and Stellar Activity Cycles (1994), published by Cambridge University Press. He died suddenly of a heart attack, at his home in Glebe, Australia, in the early morning of 11 November 2007. Peter was an organizer of, and participant in, many international conferences and workshops. He traveled extensively, holding visiting appointments at the University of Colorado (JILA), at Cambridge University, at the College de France (Paris), and at the California Institute of Technology [CalTech]. Most of his work was in the field of solar physics, but he also did some work on the philosophy of science and on tides. Peter came from a line of mathematicians. His father, Robert Wilson, immigrated to Australia from Glasgow in 1911, and became a mathematics teacher at Scotch College, a private school in Melbourne. There his name was changed to 'Bill' because 'Bob' was already taken." Peter's enjoyment of this story as characteristic of Australian academia (as any fan of Monty Python would understand) is indicative of his infectious sense of humor. In a similar vein, he claimed ancestry traced back to the eighteenth-century Scottish mathematician Alexander Wilson, Professor of Astronomy at the University of Glasgow. That Wilson is famous in the solar physics community for his discovery, known as the "Wilson Effect," of the photospheric depressions associated with sunspots. Peter himself could not resist writing a paper on this subject, and was delighted when the bait was taken by some less-informed colleagues who chided him for "naming an effect after himself." "Bill" Wilson married Naomi
Psychometric Testing of the Gordon Facial Muscle Weakness Assessment Tool
Gordon, Shirley C.; Blum, Cynthia Ann; Parcells, Dax Andrew
2010-01-01
School nurses may be the first health professionals to assess the onset of facial paralysis/muscle weakness in school-age children. The purpose of this study was to test the psychometric properties of the Gordon Facial Muscle Weakness Assessment Tool (GFMWT) developed by Gordon. Data were collected in two phases. In Phase 1, 4 content experts…
Bunched soliton states in weakly coupled sine-Gordon systems
Grønbech-Jensen, N.; Samuelsen, Mogens Rugholm; Lomdahl, P. S.
1990-01-01
The interaction between solitons of two weakly coupled sine-Gordon systems is considered. In particular, the stability of bunched states is investigated, and perturbation results are compared with numerical results.......The interaction between solitons of two weakly coupled sine-Gordon systems is considered. In particular, the stability of bunched states is investigated, and perturbation results are compared with numerical results....
The 40th AAAS Gordon Conference on nuclear chemistry
Seaborg, G.T.
1991-06-27
I am pleased to speak at the Fortieth Gordon Conference on Nuclear Chemistry. I served as Chairman of the first Gordon Conference on Nuclear Chemistry held June 23--27, 1952, at New Hampton, New Hampshire. In my remarks, during which I shall quote from my journal, I shall describe some of the background leading up to the first Gordon Conference on Nuclear Chemistry and my attendance at the first seven Gordon Conferences during the period 1952 through 1958. I shall also quote my description of my appearance as the featured speaker at the Silver Anniversary of the Gordon Research Conferences on December 27, 1956 held at the Commodore Hotel in New York City. I shall begin with reference to my participation in the predecessor to the Gordon Conferences, the Gibson Island Research Conferences 45 years ago, on Thursday, June 20, 1946, as a speaker. This was 15 years after the start of these conferences in 1931. Neil Gordon played a leading role in these conferences, which were named (in 1948) in his honor -- the Gordon Research Conferences -- soon after they were moved to Colby Junior College, New London, New Hampshire in 1947. W. George Parks became Director in 1947, Alexander Cruickshank became Assistant Director in 1947 and Director in 1968.
Exact Jacobian Elliptic Function Solutions to sinh-Gordon Equation
FU Zun-Tao; LIU Shi-Kuo; LIU Shi-Da
2006-01-01
In this paper, two transformations are introduced to solve sinh-Gordon equation by using the knowledge of elliptic equation and Jacobian elliptic functions.It is shown that different transformations are required in order to obtain more kinds of solutions to the sinh-Gordon equation.
Thomas Gordon's Communicative Pedagogy in Modern Educational Realities
Leshchenko, Maria; Isaieva, Svitlana
2014-01-01
In the article the principles, strategies, methods, techniques of communicative pedagogy of American scientist Thomas Gordon and system components of effective communication training for parents, teachers and administrators are enlightened. It has been determined that the main principle of Thomas Gordon's pedagogy is an interactive way of knowing…
2012 BATTERIES GORDON RESEARCH CONFERENCE, MARCH 4-9, 2012
Stephen Harris
2012-03-09
The Gordon Research Conference on BATTERIES was held at Four Points Sheraton / Holiday Inn Express, Ventura, California, March 4-9, 2012. The Conference was well-attended with 176 participants. Gordon Research Conferences does not permit publication of meeting proceedings.
Radial sine-Gordon kinks as sources of fast breathers
Caputo, Jean Guy; Sørensen, Mads Peter
2013-01-01
We consider radial sine-Gordon kinks in two, three, and higher dimensions. A full two-dimensional simulation showing that azimuthal perturbations remain small allows us to reduce the problem to the one-dimensional radial sine-Gordon equation. We solve this equation on an interval [r, r1] and abso...
Hillis, Peter
2012-01-01
In the nineteenth century many farmers kept a diary of the farming year to record such features as the weather, crop yields, animal husbandry, and prices. Research into church and people in the parishes of Fordyce and Portsoy in North East Scotland led to the discovery of a four-volume journal kept by James Wilson, a farmer in the Banffshire Parish of Deskford between 1879 and 1892. This journal provides a detailed picture of many aspects of rural life including farming, family, neighbors, religion, friends, and entertainment. Moreover, Wilson wrote poetry and kept a record of his lectures given to the local Mutual Improvement Associations. Taken together, the journal, poems, and lectures provide a significant body of literature giving insights into rural society. The journal also covers an important period in farming at the nexus between a time of "high farming" and the agricultural depression of the late nineteenth century.
Product Integral Representations of Wilson Lines and Wilson Loops, and Non-Abelian Stokes Theorem
Karp, R L; Rno, J S
2000-01-01
We make use of product integrals to provide an unambiguous mathematical representation of Wilson line and Wilson loop operators. Then, drawing upon various properties of product integrals, we discuss such properties of these operators as approximating them with partial sums, their convergence, and their behavior under gauge transformations. We also obtain a surface product integral representation for the Wilson loop operator. The result can be interpreted as the non-abelian version of Stokes theorem.
Neuroimaging findings in Mowat-Wilson syndrome
Garavelli, Livia; Ivanovski, Ivan; Caraffi, Stefano Giuseppe
2017-01-01
PURPOSE: Mowat-Wilson syndrome (MWS) is a genetic disease characterized by distinctive facial features, moderate to severe intellectual disability, and congenital malformations, including Hirschsprung disease, genital and eye anomalies, and congenital heart defects, caused by haploinsufficiency o...
Neuroimaging findings in Mowat-Wilson syndrome
Garavelli, Livia; Ivanovski, Ivan; Caraffi, Stefano Giuseppe
2016-01-01
PURPOSE: Mowat-Wilson syndrome (MWS) is a genetic disease characterized by distinctive facial features, moderate to severe intellectual disability, and congenital malformations, including Hirschsprung disease, genital and eye anomalies, and congenital heart defects, caused by haploinsufficiency o...
Cusped Wilson lines in symmetric representations
Correa, Diego H; Trancanelli, Diego
2015-01-01
We study the cusped Wilson line operators and Bremsstrahlung functions associated to particles transforming in the rank-$k$ symmetric representation of the gauge group $U(N)$ for ${\\cal N} = 4$ super Yang-Mills. We find the holographic D3-brane description for Wilson loops with internal cusps in two different limits: small cusp angle and $k\\sqrt{\\lambda}\\gg N$. This allows for a non-trivial check of a conjectured relation between the Bremsstrahlung function and the expectation value of the 1/2 BPS circular loop in the case of a representation other than the fundamental. Moreover, we observe that in the limit of $k\\gg N$, the cusped Wilson line expectation value is simply given by the exponential of the 1-loop diagram. Using group theory arguments, this eikonal exponentiation is conjectured to take place for all Wilson loop operators in symmetric representations with large $k$, independently of the contour on which they are supported.
Genetics Home Reference: Mowat-Wilson syndrome
... Diseases Health Topic: Congenital Heart Defects Health Topic: Developmental Disabilities Genetic and Rare Diseases Information Center (1 link) Mowat-Wilson syndrome Additional NIH Resources (2 ... Intellectual and Developmental Disabilities National Institute of Diabetes and Digestive and ...
The Geometrodynamics of Sine-Gordon Solitons
Gegenberg, J
1998-01-01
The relationship between N-soliton solutions to the Euclidean sine-Gordon equation and Lorentzian black holes in Jackiw-Teitelboim dilaton gravity is investigated, with emphasis on the important role played by the dilaton in determining the black hole geometry. We show how an N-soliton solution can be used to construct ``sine-Gordon'' coordinates for a black hole of mass M, and construct the transformation to more standard ``Schwarzchild-like'' coordinates. For N=1 and 2, we find explicit closed form solutions to the dilaton equations of motion in soliton coordinates, and find the relationship between the soliton parameters and the black hole mass. Remarkably, the black hole mass is non-negative for arbitrary soliton parameters. In the one-soliton case the coordinates are shown to cover smoothly a region containing the whole interior of the black hole as well as a finite neighbourhood outside the horizon. A Hamiltonian analysis is performed for slicings that approach the soliton coordinates on the interior, a...
Wilson Loops in Open String Theory
Shiraishi, Kiyoshi
Wilson loop elements on torus are introduced into the partition function of open strings as Polyakov’s path integral at one-loop level. Mass spectra from compactification and expected symmetry breaking are illustrated by choosing the correct weight for the contributions from annulus and Möbius strip. We show that Jacobi’s imaginary transformation connects the mass spectra with the Wilson loops. The application to thermopartition function and cosmological implications are briefly discussed.
Wilson Loops in Open String Theory
Shiraishi, Kiyoshi
2012-01-01
Wilson loop elements on torus are introduced into the partition function of open strings as Polyakov's path integral at one-loop level. Mass spectra from compactification and expected symmetry breaking are illustrated by choosing the correct weight for the contributions from annulus and M\\"obius strip. We show that Jacobi's imaginary transformation connects the mass spectra with the Wilson loops. The application to thermopartition function and cosmological implications are briefly discussed.
Zero Point Energy of Renormalized Wilson Loops
Hidaka, Yoshimasa; Pisarski, Robert D.
2009-01-01
The quark antiquark potential, and its associated zero point energy, can be extracted from lattice measurements of the Wilson loop. We discuss a unique prescription to renormalize the Wilson loop, for which the perturbative contribution to the zero point energy vanishes identically. A zero point energy can arise nonperturbatively, which we illustrate by considering effective string models. The nonperturbative contribution to the zero point energy vanishes in the Nambu model, but is nonzero wh...
Master Symmetry for Holographic Wilson Loops
Klose, Thomas; Munkler, Hagen
2016-01-01
We identify the symmetry underlying the recently observed spectral-parameter transformations of holographic Wilson loops alias minimal surfaces in AdS/CFT. The generator of this nonlocal symmetry is shown to furnish a raising operator on the classical Yangian-type charges of symmetric coset models. We explicitly demonstrate how this master symmetry acts on strong-coupling Wilson loops and indicate a possible extension to arbitrary coupling.
Wilson loops in CDT quantum gravity
Ambjorn, J; Jurkiewicz, J; Loll, R
2015-01-01
By explicit construction, we show that one can in a simple way introduce and measure gravitational holonomies and Wilson loops in lattice formulations of nonperturbative quantum gravity based on (Causal) Dynamical Triangulations. We use this set-up to investigate a class of Wilson line observables associated with the world line of a point particle coupled to quantum gravity, and deduce from their expectation values that the underlying holonomies cover the group manifold of SO(4) uniformly
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Monday 13 August 9:15 10:15 11:15 Student Session (3/3) Course Review Course Review Tuesday 14 August 16:00 Poster Session Further information can be obtained on the web at the following URL: Summer Student Lecture ProgrammeSummer Student Lectures are available at: http://agenda.cern.ch/SSLP2001
Naber, Larissa; Köhle, Monika
2006-01-01
Ever more lecturers find themselves forced to Web-enhance their courses out of economic pressure or prestige. Universities trapped between rising student numbers and decreasing budgets are turning to e-learning as the one-stop solution, with little concern for student or teacher needs. An e-(nhanced) learning environment can only be successful if it fulfils students' and lecturers' needs alike. The student needs to be supported in various stages of learning, whereas the lecturer cannot afford...
Sextet Model with Wilson Fermions
Hansen, Martin
2016-01-01
We present new results from our ongoing study of the SU(3) sextet model with two flavors in the two-index symmetric representation of the gauge group. In the simulations use unimproved Wilson fermions to investigate the infrared properties of the model. We have previously presented results for the spectrum of the model in the weak coupling regime. Here, to better understand the overall behavior of the lattice model, we map its non-trivial phase structure in the space of bare parameters. At strong coupling, we observe a first order phase transition when decreasing the bare quark mass. This first order transition weakens when moving towards weaker couplings with an endpoint at a finite value of the bare coupling, after which it appears to be a continuous transition. We also investigate the behavior of the mass spectrum and scale-setting observable, as a function of the quark mass, and show that their qualitative behavior change significantly when moving from the strong coupling into the weak coupling phase.
Abildgaard, Julie Rafn; Schärfe, Henrik
2012-01-01
In this paper we report our findings from an experiment with the teleoperated android Geminoid-DK. The geminoid took up the role of a university lecturer and delivered a 45 minute lecture in front of 150 freshmen students at Aalborg University. While considering the role of the geminoid in this e......In this paper we report our findings from an experiment with the teleoperated android Geminoid-DK. The geminoid took up the role of a university lecturer and delivered a 45 minute lecture in front of 150 freshmen students at Aalborg University. While considering the role of the geminoid...
Effective lecture presentation skills.
Gelula, M H
1997-02-01
Lectures are the most popular form of teaching in medical education. As much as preparation and organization are key to the lecture's success, the actual presentation also depends upon the presenter's ability to reach the audience. Teaching is a lively activity. It calls for more than just offering ideas and data to an audience. It calls for direct contact with the audience, effective use of language, capability to use limited time effectively, and the ability to be entertaining. This article offers a structure to effective lecturing by highlighting the importance of voice clarity and speaking speed, approaches to using audiovisual aids, effectively using the audience to the lecture, and ways to be entertaining.
Kondo, Kenichi
2013-11-01
Ultradiscretization with negative values is a long-standing problem and several attempts have been made to solve it. Among others, we focus on the symmetrized max-plus algebra, with which we ultradiscretize the discrete sine-Gordon equation. Another ultradiscretization of the discrete sine-Gordon equation has already been proposed by previous studies, but the equation and the solutions obtained here are considered to directly correspond to the discrete counterpart. We also propose a noncommutative discrete analogue of the sine-Gordon equation, reveal its relations to other integrable systems including the noncommutative discrete KP equation, and construct multisoliton solutions by a repeated application of Darboux transformations. Moreover, we derive a noncommutative ultradiscrete analogue of the sine-Gordon equation and its 1-soliton and 2-soliton solutions, using the symmetrized max-plus algebra. As a result, we have a complete set of commutative and noncommutative versions of continuous, discrete, and ultradiscrete sine-Gordon equations.
Kenichi Kondo
2013-11-01
Full Text Available Ultradiscretization with negative values is a long-standing problem and several attempts have been made to solve it. Among others, we focus on the symmetrized max-plus algebra, with which we ultradiscretize the discrete sine-Gordon equation. Another ultradiscretization of the discrete sine-Gordon equation has already been proposed by previous studies, but the equation and the solutions obtained here are considered to directly correspond to the discrete counterpart. We also propose a noncommutative discrete analogue of the sine-Gordon equation, reveal its relations to other integrable systems including the noncommutative discrete KP equation, and construct multisoliton solutions by a repeated application of Darboux transformations. Moreover, we derive a noncommutative ultradiscrete analogue of the sine-Gordon equation and its 1-soliton and 2-soliton solutions, using the symmetrized max-plus algebra. As a result, we have a complete set of commutative and noncommutative versions of continuous, discrete, and ultradiscrete sine-Gordon equations.
Eigenvalue distributions of Wilson loops
Lohmayer, Robert
2010-07-01
In the first part of this thesis, we focus on the distribution of the eigenvalues of the unitary Wilson loop matrix in the two-dimensional case at arbitrary finite N. To characterize the distribution of the eigenvalues, we introduce three density functions (the ''symmetric'', the ''antisymmetric'', and the ''true'' eigenvalue density) which differ at finite N but possess the same infinite-N limit, exhibiting the Durhuus-Olesen phase transition. Using expansions of determinants and inverse determinants in characters of totally symmetric or totally antisymmetric representations of SU(N), the densities at finite N can be expressed in terms of simple sums involving only dimensions and quadratic Casimir invariants of certain irreducible representations of SU(N), allowing for a numerical computation of the densities at arbitrary N to any desired accuracy. We find that the true eigenvalue density, adding N oscillations to the monotonic symmetric density, is in some sense intermediate between the symmetric and the antisymmetric density, which in turn is given by a sum of N delta peaks located at the zeros of the average of the characteristic polynomial. Furthermore, we show that the dependence on N can be made explicit by deriving integral representations for the resolvents associated to the three eigenvalue densities. Using saddle-point approximations, we confirm that all three densities reduce to the Durhuus-Olesen result in the infinite-N limit. In the second part, we study an exponential form of the multiplicative random complex matrix model introduced by Gudowska-Nowak et al. Varying a parameter which can be identified with the area of the Wilson loop in the unitary case, the region of non-vanishing eigenvalue density of the N-dimensional complex product matrix undergoes a topological change at a transition point in the infinite-N limit. We study the transition by a detailed analysis of the average of the
Gewirth, Andrew
2013-08-03
The 2012 Gordon Conference on Electrodeposition: Electrochemical Materials Synthesis and Applications will present cutting-edge research on electrodeposition with emphasis on (i) advances in basic science, (ii) developments in next-generation technologies, and (iii) new and emerging areas. The Conference will feature a wide range of topics, from atomic scale processes, nucleation and growth, thin film deposition, and electrocrystallization, to applications of electrodeposition in devices including microelectronics, batteries, solar energy, and fuel cells.
Gewirth, Andrew
2013-08-03
The 2012 Gordon Conference on Electrodeposition: Electrochemical Materials Synthesis and Applications will present cutting-edge research on electrodeposition with emphasis on (i) advances in basic science, (ii) developments in next-generation technologies, and (iii) new and emerging areas. The Conference will feature a wide range of topics, from atomic scale processes, nucleation and growth, thin film deposition, and electrocrystallization, to applications of electrodeposition in devices including microelectronics, batteries, solar energy, and fuel cells.
The 2013 Clusters, Nanocrystals & Nanostructures Gordon Research Conference/Gordon Research Seminar
Krauss, Todd D. [University of Rochester
2014-11-25
The fundamental properties of small particles and their potential for groundbreaking applications are among the most exciting areas of study in modern physics, chemistry, and materials science. The Clusters, Nanocrystals & Nanostructures Gordon ResearchConference and Gordon Research Seminar synthesize contributions from these inter-related fields that reflect the pivotal role of nano-particles at the interface between these disciplines. Size-dependent optical, electronic, magnetic and catalytic properties offer prospects for applications in many fields, and possible solutions for many of the grand challenges facing energy generation, consumption, delivery, and storage in the 21st century. The goal of the 2013 Clusters, Nanocrystals & Nanostructures Gordon Research Conference and Gordon Research Seminar is to continue the historical interdisciplinary tradition of this series and discuss the most recent advances, basic scientific questions, and emerging applications of clusters, nanocrystals, and nanostructures. The Clusters, Nanocrystals & Nanostructures GRC/GRS traditionally brings together the leading scientific groups that have made significant recent advances in one or more fundamental nanoscience or nanotechnology areas. Broad interests of the DOE BES and Solar Photochemistry Program addressed by this meeting include the areas of solar energy to fuels conversion, new photovoltaic systems, fundamental characterization of nanomaterials, magnetism, catalysis, and quantum physics. The vast majority of speakers and attendees will address either directly the topic of nanotechnology for photoinduced charge transfer, charge transport, and catalysis, or will have made significant contributions to related areas that will impact these fields indirectly. These topics have direct relevance to the mission of the DOE BES since it is this cutting-edge basic science that underpins our energy future.
Academic Training Lecture - Regular lecture programme
PH Department
2011-01-01
Wednesday 28, Thursday 29 and Friday 30 September 2011 Supersymmetric Recipes by Prof. Ben Allanech / University of Cambridge, UK from 11:00 to 12:00 (Europe/Zurich) at CERN ( Main Auditorium, Bldg. 500 ) In these lectures, I shall describe the theory of supersymmetry accessible to people with a knowledge of basic quantum field theory. The lectures will contain recipes of how to calculate which interactions (and which special relations) are in supersymmetry, without providing detailed proofs of where they come from. We shall also cover: motivation for weak-scale supersymmetry and the minimal supersymmetric standard model.
Nettleship, Lois
Three lectures on law enforcement are presented that were prepared for study purposes at Johnson County Community College. The first lecture examines the fundamental ideas of the Age of Enlightenment and discusses their influence on the American Revolution, the United States Constitution, and the Bill of Rights. Major provisions of the Bill of…
Burstein, S.Z.; Lax, P.D.; Sod, G.A. (eds.)
1978-09-01
Eleven lectures are presented on mathematical aspects of combustion: fluid dynamics, deflagrations and detonations, chemical kinetics, gas flows, combustion instability, flame spread above solids, spark ignition engines, burning rate of coal particles and hydrocarbon oxidation. Separate abstracts were prepared for three of the lectures. (DLC)
President Wilson's brain trust: Woodrow Wilson, Francis X. Dercum, and American neurology.
Jacobson, Ryan D
2009-01-01
On October 2, 1919, President Woodrow Wilson suffered a stroke that paralyzed the left half of his body. Wilson's stroke forced the American public to confront stroke, and laypeople came to identify stroke as a nervous disorder, rather than a condition rooted solely in psychological phenomena. His medical care was overseen by Cary Grayson, his personal internist, and Francis X. Dercum, a remarkably accomplished neurologist from Philadelphia. Dercum was very involved in the treatment of the President, from the day of the stroke until years later. While the medical records have been destroyed, some basic facts of Wilson's treatment and rehabilitation can be inferred from the literature. Although Woodrow Wilson was an exceptional patient, his care, albeit administered by some of the most famous physicians of the era, was typical of the time. Therefore, this paper's approach to Wilson's 1919 stroke contextualizes the President's case into the larger scheme of early twentieth-century neurology.
Academic Training; Tel 73127
2001-01-01
28, 29, 30, 31 May and 1 June REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 Quantum computing and Quantum cryptography T. Hey / University of Southampton, GB, and D. Ross / CERN-TH This course will give both an overview and a detailed introduction to quantum computing and quantum cryptography. The first lecture will survey the field, starting from its origins in Feyman's lecture in 1981. The next three lectures will explain in detail the relevance of Bell states and the workings of Grover's Quantum Search and Shor's quantum factorization algorithms. In addition, an explanation of quantum teleportation will be given. The last lecture will survey the recent progress towards realizing working quantum computers and quantum cryptographic systems.
2011 GASEOUS IONS GORDON RESEARCH CONFERENCE
Scott Anderson
2011-03-04
The Gaseous Ions: Structures, Energetics and Reactions Gordon Research Conference will focus on ions and their interactions with molecules, surfaces, electrons, and light. The conference will cover theory and experiments, and systems ranging from molecular to biological to clusters to materials. The meeting goal continues to be bringing together scientists interested in fundamentals, with those applying fundamental phenomena to a wide range of practical problems. Each of the ten conference sessions will focus on a topic within this spectrum, and there will also be poster sessions for contributed papers, with sufficient space and time to allow all participants to present their latest results. To encourage active participation by young investigators, about ten of the poster abstracts will be selected for 15 minute 'hot topic' talks during the conference sessions. Hot topic selection will be done about a month before the meeting. Funds should be available to offset the participation cost for young investigators.
Vortex Strings and Nonabelian sine-Gordon Theories
Park, Q H
1999-01-01
We generalize the Lund-Regge model for vortex string dynamics in 4-dimensional Minkowski space to the arbitrary n-dimensional case. The n-dimensional vortex equation is identified with a nonabelian sine-Gordon equation and its integrability is proven by finding the associated linear equations of the inverse scattering. An explicit expression of vortex coordinates in terms of the variables of the nonabelian sine-Gordon system is derived. In particular, we obtain the n-dimensional vortex soliton solution of the Hasimoto-type from the one soliton solution of the nonabelian sine-Gordon equation.
Conformal anomaly of super Wilson loop
Belitsky, A.V., E-mail: andrei.belitsky@asu.edu [Department of Physics, Arizona State University, Tempe, AZ 85287-1504 (United States)
2012-09-11
Classically supersymmetric Wilson loop on a null polygonal contour possesses all symmetries required to match it onto non-MHV amplitudes in maximally supersymmetric Yang-Mills theory. However, to define it quantum mechanically, one is forced to regularize it since perturbative loop diagrams are not well defined due to presence of ultraviolet divergences stemming from integration in the vicinity of the cusps. A regularization that is adopted by practitioners by allowing one to use spinor helicity formalism, on the one hand, and systematically go to higher orders of perturbation theory is based on a version of dimensional regularization, known as Four-Dimensional Helicity scheme. Recently it was demonstrated that its use for the super Wilson loop at one loop breaks both conformal symmetry and Poincare supersymmetry. Presently, we exhibit the origin for these effects and demonstrate how one can undo this breaking. The phenomenon is alike the one emerging in renormalization group mixing of conformal operators in conformal theories when one uses dimensional regularization. The rotation matrix to the diagonal basis is found by means of computing the anomaly in the Ward identity for the conformal boost. Presently, we apply this ideology to the super Wilson loop. We compute the one-loop conformal anomaly for the super Wilson loop and find that the anomaly depends on its Grassmann coordinates. By subtracting this anomalous contribution from the super Wilson loop we restore its interpretation as a dual description for reduced non-MHV amplitudes which are expressed in terms of superconformal invariants.
A unified approach in seeking the solitary wave solutions to sine-Gordon type equations
Xie Yuan-Xi; Tang Jia-Shi
2005-01-01
By utilizing the solutions of an auxiliary ordinary differential equation introduced in this paper, we present a simple and direct method to uniformly construct the exact solitary wave solutions for sine-Gordon type equations.As illustrative examples, the exact solitary wave solutions of some physically significant sine-Gordon type equations,including the sine-Gordon equation, double sine-Gordon equation and mKdV-sine-Gordon equation, are investigated by means of this method.
Weiss Karl
2008-07-01
Full Text Available Abstract Background In Wilson disease, copper is not sufficiently excreted into bile due to the absence or malfunction of the Wilson protein copper ATPase in the excretory pathway of hepatocytes. Copper is found in sweat. It is unknown if the Wilson protein plays a role in copper excretion into sweat. It is the aim of this study to investigate Wilson protein expression in sweat glands and analysing its effects on copper excretion into sweat in controls and patients with Wilson disease. Methods Immunofluorescent analysis of the Wilson protein in skin samples from normal rat, LEC rat and human skin biopsies were performed. Pilocarpin-induced sweat gland stimulation by iontophoretic transfer adapted from the methods used for cystic fibrosis sweat test was used for sweat induction. Sweat volume, sweat copper concentration, serum ceruloplasmin and serum copper were analysed in 28 Wilson patients and 21 controls. Results The Wilson protein is expressed in human and rat sweat gland epithelia. Copper concentration in sweat is not significantly different between controls and Wilson patients. Wilson patients produce significantly smaller volumes of sweat compared to controls. Sweat production is partially reversible in Wilson patients under medical treatment for Wilson disease or after liver transplantation Conclusion Wilson patients show a reduced sweat production with unaltered sweat copper concentration. The Wilson protein might play an important role in physiological sweat production.
The Universal Askey-Wilson Algebra
Paul Terwilliger
2011-07-01
Full Text Available In 1992 A. Zhedanov introduced the Askey-Wilson algebra AW=AW(3 and used it to describe the Askey-Wilson polynomials. In this paper we introduce a central extension Δ of AW, obtained from AW by reinterpreting certain parameters as central elements in the algebra. We call Δ the universal Askey-Wilson algebra. We give a faithful action of the modular group PSL_2(Z on Δ as a group of automorphisms. We give a linear basis for Δ. We describe the center of Δ and the 2-sided ideal Δ[Δ,Δ]Δ. We discuss how Δ is related to the q-Onsager algebra.
NOAA Ship Gordon Gunter Underway Meteorological Data, Near Real Time
National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Gordon Gunter Underway Meteorological Data (Near Real Time, updated daily) are from the Shipboard Automated Meteorological and Oceanographic System (SAMOS)...
Gordon Browni valitsuslaevuke sõitis karidele / Heiki Suurkask
Suurkask, Heiki, 1972-
2008-01-01
Briti peaministri Gordon Browni partei kaotas Inglismaa ja Walesi kohalikel valimistel. Autori väitel võis kõige rängema hoobi valitsusele anda madalaima, 10-protsendilise tulumaksumäära kaotamine
Pilved Gordon Browni tuleviku kohal aina tumenevad / Hendrik Vosman
Vosman, Hendrik
2008-01-01
Briti peaministri Gordon Brownile on parlamendis opositsioonis olevad toorid suutnud oma edumaad leiboristide ees suurendada juba 28 %-punktini, peaministri maine kiire languse põhjuseks peetakse viimaste kuude maailma finantskriisi
Simulations to demonstrate reduction of the Gordon-Haus effect.
Marcuse, D
1992-01-01
The superposition of spontaneous emission noise on a train of soliton pulses produces a random change of the center frequency of the soliton spectrum that causes a change of the group velocity of individual solitons, which in long-light-wave systems translates into a random jitter of the position of the pulses at the receiver. This phenomenon is known as the Gordon-Haus effect. If uncontrolled, the Gordon-Haus effect sets a definite limit on the permissible data rate or on the length of soliton-based light-wave systems. Recently Kodama and Hasegawa [Opt. Lett. 17, 31 (1992)] have shown that the Gordon-Haus effect can be suppressed by placing filters along the fiber that reduce the frequency jitter and the concomitant group-velocity changes. We demonstrate the reduction of the Gordon-Haus effect by computer simulations.
Gordon Browni valitsuslaevuke sõitis karidele / Heiki Suurkask
Suurkask, Heiki, 1972-
2008-01-01
Briti peaministri Gordon Browni partei kaotas Inglismaa ja Walesi kohalikel valimistel. Autori väitel võis kõige rängema hoobi valitsusele anda madalaima, 10-protsendilise tulumaksumäära kaotamine
Pilved Gordon Browni tuleviku kohal aina tumenevad / Hendrik Vosman
Vosman, Hendrik
2008-01-01
Briti peaministri Gordon Brownile on parlamendis opositsioonis olevad toorid suutnud oma edumaad leiboristide ees suurendada juba 28 %-punktini, peaministri maine kiire languse põhjuseks peetakse viimaste kuude maailma finantskriisi
Bunched soliton states in weakly coupled sine-Gordon systems
Gronbech-Jensen, N.; Samuelsen, M.R. (Physics Laboratory I, The Technical University of Denmark, DK-2800 Lyngby (Denmark)); Lomdahl, P.S. (Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM (USA)); Blackburn, J.A. (Department of Physics and Computing, Wilfrid Laurier University, Waterloo, Ontario (Canada))
1990-09-01
The interaction between solitons of two weakly coupled sine-Gordon systems is considered. In particular, the stability of bunched states is investigated, and perturbation results are compared with numerical results.
Research Ship Robert Gordon Sproul Underway Meteorological Data, Quality Controlled
National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Robert Gordon Sproul Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and...
NOAA Ship Gordon Gunter Underway Meteorological Data, Quality Controlled
National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Gordon Gunter Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...
Approximate Solutions of Klein-Gordon Equation with Kratzer Potential
H. Hassanabadi
2011-01-01
Full Text Available Approximate solutions of the D-dimensional Klein-Gordon equation are obtained for the scalar and vector general Kratzer potential for any l by using the ansatz method. The energy behavior is numerically discussed.
Sine-Gordon Theory : Entanglement entropy and holography
Banerjee, Pinaki; Sathiapalan, B
2016-01-01
We compute entanglement entropy of sine-Gordon theory for a single interval using both field theoretic and holographic techniques. The results match for near-marginal perturbations up to leading order in the coupling.
Bruce Medalists at the Mt. Wilson Observatory
Tenn, J. S.
2004-12-01
The institution which succeeded the Mt. Wilson Station of Yerkes Observatory in 1904 has had six names and three sites. From 1948-1980 it was united with Caltech's Palomar Observatory, and since then its main observatory has been in Chile, though still headquartered on Santa Barbara Street in Pasadena. For more than half of the twentieth century it was the leading observatory in the world. One bit of evidence for this is the amazing number of its staff members awarded the Bruce Medal. The Catherine Wolfe Bruce Gold Medal of the Astronomical Society of the Pacific has been awarded for lifetime contributions to astronomy since 1898. It is an international award. It wasn't until 1963 that the number of medalists who had worked primarily in the United States reached half the total. Yet fourteen of the first 87 medalists spent most of their careers at Mt. Wilson, including the period when it was Mt. Wilson and Palomar, and another three were Caltech observers who used the telescopes of the jointly operated observatory. Several more medalists made substantial use of the telescopes on Mt. Wilson and Palomar Mountain. We will discuss highlights of the careers of a number of these distinguished astronomers: directors George Ellery Hale, Walter Adams, Ira Bowen, and Horace Babcock; solar observer and satellite discoverer Seth Nicholson; instrument builder Harold Babcock; galactic and cosmological observers Frederick Seares, Edwin Hubble, Walter Baade, Rudolph Minkowski, and Allan Sandage; and spectroscopists Paul Merrill, Alfred Joy, Olin Wilson, Jesse Greenstein, Maarten Schmidt, and Wallace Sargent. We will touch briefly on others who used Mt. Wilson and/or Palomar, including Harlow Shapley, Joel Stebbins, Charlotte Moore Sitterly, Donald Osterbrock, and Albert Whitford.
Academic Training; Tel. 73127
2001-01-01
12, 13, 14, 15 & 16 March REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 Telecommunication for the future Rob Parker / CERN-IT Few fields have experienced such a high level of technical advance over the last few decades as that of telecommunications. This lecture series will track the evolution of telecommunications systems since their inception, and consider how technology is likely to advance over the next years. A personal view will also be given of the effect of these innovations on our work and leisure activities.The lecture series will be aimed at an audience with no specific technical knowledge of telecommunications.
Wilson Loops in Noncommutative Yang Mills
Ishibashi, N; Kawai, H; Kitazawa, Y; Ishibashi, Nobuyuki; Iso, Satoshi; Kawai, Hikaru; Kitazawa, Yoshihisa
2000-01-01
We study the correlation functions of the Wilson loops in noncommutative Yang-Mills theory based upon its equivalence to twisted reduced models. We point out that there is a crossover at the noncommutativity scale. At large momentum scale, the Wilson loops in noncommmutative Yang-Mills represent extended objects. They coincide with those in ordinary Yang-Mills theory in low energy limit. The correlation functions on D-branes in IIB matrix model exhibit the identical crossover behavior. It is observed to be consistent with the supergravity description with running string coupling. We also explain that the results of Seiberg and Witten can be simply understood in our formalism.
Isolated lingual involvement in Wilson's disease.
Choudhary, Neera; Joshi, Laxmikant; Duggal, Ashish; Puri, Vinod; Khwaja, Geeta Anjum
2015-01-01
Lingual involvement can occur in a variety of neurological disorders including pyramidal, extrapyramidal and lower motor neuron disorders. It can be seen in the form of tremor, bradykinesia, dystonia, atrophy and weakness of tongue movements and can clinically present as difficulty in swallowing and dysarthria which can be a source of great discomfort to the patient. We describe a patient who presented with isolated lingual involvement and was diagnosed to have Wilsons's disease. This case emphasizes the clinical variability in presentation of Wilson's disease and importance of early clinical diagnosis.
Gordon Memorial Lecture. An egg ist ein ei, es un huevo, est un oeuf.
Solomon, S E
1999-03-01
1. Many of the mechanical tests devised to measure shell quality are inadequate because they fail to recognise the complex interaction between the organic and inorganic aspects of the eggshell. 2. Twelve structural modifications have been observed at the level of the mammillary layer and their presence correlated with a variety of environmental stress events. Occurring as they do in the basal layers of the shell, these morphological variants influence its mechanical properties. 3. The organic matrix proteins which complex with the calcium carbonate derive from a variety of sites within the oviduct and vary in their location within the fully formed shell. In vitro mineralisation reveals the significance of these proteins in the crystal growth mechanism. 4. The isolation and identification of the protein moiety in well-structured eggshells is an essential prerequisite to understanding the abnormalities in crystal growth observed in the shells of older birds challenged by disease and other undesirable 'on farm' events. 5. The eggshell is the daily indicator of the bird's harmony with its environment and as such provides a readily accessible and non invasive measure of welfare. The integration of these data with those derived from behavioural and biochemical testing should provide industry with a reliable numerical welfare index.
Payne, L N
1994-03-01
1. Poultry disease research in the UK began recognisably in the 1920s, in consequence of the development of a national poultry industry of economic importance. 2. Increasing disease problems during the 1930s revealed the need for more research, resulting notably in the growth of the Poultry Department of the Central Veterinary Laboratory and the establishment of Houghton Poultry Research Station. 3. Continued growth of the egg industry and the introduction of the broiler industry in the 1950s stimulated increased disease research, much of it publicly funded, during the following two decades. 4. Changing government attitudes to agricultural research in the 1980s brought about far-reaching changes to the funding, organisation, nature and amount of disease research conducted. Arrangements for such research continue to evolve.
Applied and Environmental Microbiology Gordon Research Conference
Wall, Judy D.
2003-11-19
The main objective of the Gordon Research Conference on Applied and Environmental Microbiology was to present and discuss new, fundamental research findings on microorganisms, their activities in the environment, their ecosystem-level effects, and their environmental or commercial applications. To accomplish this goal, knowledge of microbial diversity, interactions and population dynamics was required. The genomic basis of microbial processes, the cycling of naturally occurring and hazardous substances, and methodologies to assess the functional relationships of microorganisms in their habitats were essential for understanding the ecological consequences of microbial activities and the formulation of generalizing principles. In the last decade, molecular technology has revealed that microbial diversity is far more extensive than the limited view obtained from culturing procedures. Great advances in environmental microbiology have resulted from the development and application of molecular approaches to ecology and molecular evolution. A further surprise resulting from the application of these new tools is the blurring of the distinction between pathogenic traits versus those considered non-pathogenic. This year's conference addressed the issues of biodiversity, its development, and the impact of stress on gene selection and expression. In addition microbial metabolic versatility with toxins such as heavy metals, antibiotics, and organic pollutants were discussed. The nine session topics were (1) biodiversity and the bacterial species, (2) mechanisms of biodiversification, (3) biofilms in health and environment, (4) a genomic view of microbial response to stress, (5) microbial use of toxic metals, (6) microbial mineral formation and dissolution, (7) power and limitations of antimicrobials, (8) biodegradation of organic pollutants, and (9) astrobiology. The Conference had an international profile: the Conference Vice-Chair, Dr. Gerard Muyzer, was from The Nether
Interactive lectures in engineering education
van Dijk, L.A.; van den Berg, G.C.; van Keulen, H.
2001-01-01
This article discusses an alternative approach to lecturing: the interactive lecture. In the literature, interactive teaching is forwarded as a means to increase the effectiveness of lectures. Members of lecturing staff still seem, however, reluctant to incorporate interactive teaching in their clas
Interactive lectures in engineering education
van Dijk, L.A.; van den Berg, G.C.; van Keulen, H.
2001-01-01
This article discusses an alternative approach to lecturing: the interactive lecture. In the literature, interactive teaching is forwarded as a means to increase the effectiveness of lectures. Members of lecturing staff still seem, however, reluctant to incorporate interactive teaching in their
Spectrum of the Wilson Dirac operator at finite lattice spacings
Akemann, G.; Damgaard, Poul Henrik; Splittorff, Kim;
2011-01-01
We consider the effect of discretization errors on the microscopic spectrum of the Wilson Dirac operator using both chiral Perturbation Theory and chiral Random Matrix Theory. A graded chiral Lagrangian is used to evaluate the microscopic spectral density of the Hermitian Wilson Dirac operator...... as well as the distribution of the chirality over the real eigenvalues of the Wilson Dirac operator. It is shown that a chiral Random Matrix Theory for the Wilson Dirac operator reproduces the leading zero-momentum terms of Wilson chiral Perturbation Theory. All results are obtained for fixed index...... of the Wilson Dirac operator. The low-energy constants of Wilson chiral Perturbation theory are shown to be constrained by the Hermiticity properties of the Wilson Dirac operator....
Feynman Lectures on Computation
Feynman, Richard Phillips; Allen, Robin W
1999-01-01
"When, in 1984-86, Richard P. Feynman gave his famous course on computation at the California Institute of Technology, he asked Tony Hey to adapt his lecture notes into a book. Although led by Feynman,"
Gordon Research Conference on Genetic Toxicology
Project Director Penelope Jeggo
2003-02-15
Genetic toxicology represents a study of the genetic damage that a cell can incur, the agents that induce such damage, the damage response mechanisms available to cells and organisms, and the potential consequences of such damage. Genotoxic agents are abundant in the environment and are also induced endogenously. The consequences of such damage can include carcinogenesis and teratogenesis. An understanding of genetic toxicology is essential to carry out risk evaluations of the impact of genotoxic agents and to assess how individual genetic differences influence the response to genotoxic damage. In recent years, the importance of maintaining genomic stability has become increasingly recognized, in part by the realization that failure of the damage response mechanisms underlies many, if not all, cancer incidence. The importance of these mechanisms is also underscored by their remarkable conservation between species, allowing the study of simple organisms to provide significant input into our understanding of the underlying mechanisms. It has also become clear that the damage response mechanisms interface closely with other aspects of cellular metabolism including replication, transcription and cell cycle regulation. Moreover, defects in many of these mechanisms, as observed for example in ataxia telangiectasia patients, confer disorders with associated developmental abnormalities demonstrating their essential roles during growth and development. In short, while a decade ago, a study of the impact of DNA damage was seen as a compartmentalized area of cellular research, it is now appreciated to lie at the centre of an array of cellular responses of crucial importance to human health. Consequently, this has become a dynamic and rapidly advancing area of research. The Genetic Toxicology Gordon Research Conference is biannual with an evolving change in the emphasis of the meetings. From evaluating the nature of genotoxic chemicals, which lay at the centre of the early
Abildgaard, Julie Rafn; Schärfe, Henrik
2012-01-01
In this paper we report our findings from an experiment with the teleoperated android Geminoid-DK. The geminoid took up the role of a university lecturer and delivered a 45 minute lecture in front of 150 freshmen students at Aalborg University. While considering the role of the geminoid in this e...... in this educational context, we report results relating to large-room teaching, as well as gender differences in the perception of the robot....
Volume reduction through perturbative Wilson loops
Perez, Margarita Garcia; Okawa, Masanori
2016-01-01
We derive the perturbative expansion of Wilson loops to order g^4 in a SU(N) lattice gauge theory with twisted boundary conditions. Our expressions show that the thermodynamic limit is attained at infinite N for any number of lattice sites and allow to quantify the deviations from volume independence at finite large N as a function of the twist.
Wilson disease : from clinical to molecular
Houwen, Roderick Henk Johan
1991-01-01
Wilson disease is an autosomal recessive copper storage disease. It is characterized by an inability of the liver to; excrete copper into bile and to incorporate copper into ceruloplasmin. This results in a gradual accumulation of copper in the liver and subsequently in the brain and other organs, I
Spasmodic Muscle Cramps and Wilson Disease
J Gordon Millichap
2013-12-01
Full Text Available Investigators at Ann & Robert H. Lurie Children's Hospital of Chicago report a case of Wilson disease (WD in a 10-year-old-boy presenting with 3 months of increasingly severe spasmodic muscle cramps and weakness in lower extremities, upper extremities, and cramps in face and chest.
Abelian Duality and Abelian Wilson Loops
Zucchini, R
2003-01-01
We consider a pure U(1) quantum gauge field theory on a general Riemannian compact four manifold. We compute the partition function with Abelian Wilson loop insertions. We find its duality covariance properties and derive topological selection rules. Finally, we show that, to have manifest duality, one must assume the existence of twisted topological sectors besides the standard untwisted one.
The Cora Wilson Stewart Moonlight Schoolhouse
Rose, Harold; Curtis, Mike
1974-01-01
Describes the establishment of adult education programs on "moonlit nights" by Cora Wilson Stewart, Superintendent of Rowan County Schools in Kentucky (1904-1912). Over 1,200 adults signed up the first year to take such courses as vocal music, reading, writing, spelling, arithmetic, and drills. From this activity the Illiteracy…
Cora Wilson Stewart: Crusader against Illiteracy.
Nelms, Willie
This book is a biography of Cora Wilson Stewart, a Rowan County, Kentucky, school superintendent who rose to prominence with the establishment of the Moonlight Schools for adults with low literacy levels in 1911. It presents the details of her Kentucky crusade against illiteracy, then examines the personal part of her life as well as her later…
Wilson lines in quantum field theory
Cherednikov, Igor Olegovich [Antwerpen Univ., Antwerp (Belgium). Fysica Dept.; Joint Institute of Nuclear Research, Moscow (Russian Federation). Bogoliubov Lab. of Theoretical Physics; Mertens, Tom; Veken, Frederik F. van der [Antwerpen Univ., Antwerp (Belgium). Fysica Dept.
2014-07-01
Wilson lines (also known as gauge links or eikonal lines) can be introduced in any gauge field theory. Although the concept of the Wilson exponentials finds an enormously wide range of applications in a variety of branches of modern quantum field theory, from condensed matter and lattice simulations to quantum chromodynamics, high-energy effective theories and gravity, there are surprisingly few books or textbooks on the market which contain comprehensive pedagogical introduction and consecutive exposition of the subject. The objective of this book is to get the potential reader acquainted with theoretical and mathematical foundations of the concept of the Wilson loops in the context of modern quantum field theory, to teach him/her to perform independently some elementary calculations with Wilson lines, and to familiarize him/her with the recent development of the subject in different important areas of research. The target audience of the book consists of graduate and postgraduate students working in various areas of quantum field theory, as well as researchers from other fields.
Wilson Fermions with Four Fermion Interactions
Rantaharju, Jarno; Drach, Vincent; Hietanen, Ari;
2015-01-01
We present a lattice study of a four fermion theory, known as Nambu Jona-Lasinio (NJL) theory, via Wilson fermions. Four fermion interactions naturally occur in several extensions of the Standard Model as a low energy parameterisation of a more fundamental theory. In models of dynamical electrowe...
Obituary: William Gordon (1918-2010)
Terzian, Yervant
2011-12-01
Bill Gordon was born in Paterson, New Jersey on January 8, 1918, and died in Ithaca, New York, on February 16, 2010. He is known as the engineer and ionospheric physicist who conceived and built the Arecibo giant radar/radio telescope. Bill graduated from Montclair State College in New Jersey and then in 1953 received his doctorate degree from Cornell University in electrical engineering, working under Henry Booker. During World War II he was in the Army where he studied the atmospheric conditions that affected radar transmissions. In the mid 1950s he began investigating giant antennas capable of studying the earths ionosphere. He succeeded in raising funds from the US Defense Department to construct the 1000 ft in diameter radar/radio telescope near the city of Arecibo on the island of Puerto Rico. The telescope was completed in 1963 under Bill's management, and he was its first Director. The huge fixed spherical antenna surface was made of a thin wire mesh allowing it to operate at frequencies up to about 600 MHz (50 cm wavelength). The spherical surface required complex 'line feeds' to correct for the spherical aberration, but allowed the telescope to track celestial radio sources by moving the line feeds which were supported by a platform suspended 500 ft above the reflector surface. Its sky coverage declination range was from -2 to +38 degrees. The large collecting area of the telescope made possible the detailed study of the physical properties of the earth's ionosphere. Measurements also included the rotation rates of the planets Mercury and Venus, radar imaging of the Moon and terrestrial planets. This new magastructure operated at low frequencies with its prime frequency at 430 MHz. One of Bill's passions was to make controlled experiments with the ionosphere. These so called 'heating experiments,' used a powerful HF radar transmitting from 5 to 10 MHz, to heat the ionosphere near the plasma frequency. The Arecibo radar then would study the heated
2010 Membranes: Materials & Processes Gordon Research Conference
Jerry Lin
2010-07-30
The GRC series on Membranes: Materials and Processes have gained significant international recognition, attracting leading experts on membranes and other related areas from around the world. It is now known for being an interdisciplinary and synergistic meeting. The next summer's edition will keep with the past tradition and include new, exciting aspects of material science, chemistry, chemical engineering, computer simulation with participants from academia, industry and national laboratories. This edition will focus on cutting edge topics of membranes for addressing several grand challenges facing our society, in particular, energy, water, health and more generally sustainability. During the technical program, we want to discuss new membrane structure and characterization techniques, the role of advanced membranes and membrane-based processes in sustainability/environment (including carbon dioxide capture), membranes in water processes, and membranes for biological and life support applications. As usual, the informal nature of the meeting, excellent quality of the oral presentations and posters, and ample opportunity to meet many outstanding colleagues make this an excellent conference for established scientists as well as for students. A Gordon Research Seminar (GRS) on the weekend prior to the GRC meeting will provide young researchers an opportunity to present their work and network with outstanding experts. It will also be a right warm-up for the conference participants to join and enjoy the main conference.
An eigenvalue problem for the associated Askey-Wilson polynomials
Bruder, Andrea; Suslov, Sergei K
2012-01-01
To derive an eigenvalue problem for the associated Askey-Wilson polynomials, we consider an auxiliary function in two variables which is related to the associated Askey-Wilson polynomials introduced by Ismail and Rahman. The Askey-Wilson operator, applied in each variable separately, maps this function to the ordinary Askey-Wilson polynomials with different sets of parameters. A third Askey-Wilson operator is found with the help of a computer algebra program which links the two, and an eigenvalue problem is stated.
Upadhye, Rekha P.; Kalyane, V. L.; Vijai Kumar; Prakasan, E. R.
2003-01-01
Scientometric analysis of synchronous references in the nine Physics Nobel lectures by Nicolaas Bloembergen (1981), Arthur L. Schawlow (1981), Kai M. Siegbahn (1981), Kenneth G. Wilson (1982), Subrahmanyan Chandrasekhar (1983), William A. Fowler (1983), Carlo Rubbia (1984), Simon van der Meer (1984), and Klaus von Klitzing (1985) indicated high variations: No. of Synchronous References ranged from 24 (Meer) to 283 (Siegbahn); Synchronous Self-References ranged from 5 (Rubbia) to 88 (Siegbahn)...
Academic Training Lecture - Regular Programme
PH Department
2011-01-01
Regular Lecture Programme 9 May 2011 ACT Lectures on Detectors - Inner Tracking Detectors by Pippa Wells (CERN) 10 May 2011 ACT Lectures on Detectors - Calorimeters (2/5) by Philippe Bloch (CERN) 11 May 2011 ACT Lectures on Detectors - Muon systems (3/5) by Kerstin Hoepfner (RWTH Aachen) 12 May 2011 ACT Lectures on Detectors - Particle Identification and Forward Detectors by Peter Krizan (University of Ljubljana and J. Stefan Institute, Ljubljana, Slovenia) 13 May 2011 ACT Lectures on Detectors - Trigger and Data Acquisition (5/5) by Dr. Brian Petersen (CERN) from 11:00 to 12:00 at CERN ( Bldg. 222-R-001 - Filtration Plant )
Touzé, Antoine
2015-01-01
This book features a series of lectures that explores three different fields in which functor homology (short for homological algebra in functor categories) has recently played a significant role. For each of these applications, the functor viewpoint provides both essential insights and new methods for tackling difficult mathematical problems. In the lectures by Aurélien Djament, polynomial functors appear as coefficients in the homology of infinite families of classical groups, e.g. general linear groups or symplectic groups, and their stabilization. Djament’s theorem states that this stable homology can be computed using only the homology with trivial coefficients and the manageable functor homology. The series includes an intriguing development of Scorichenko’s unpublished results. The lectures by Wilberd van der Kallen lead to the solution of the general cohomological finite generation problem, extending Hilbert’s fourteenth problem and its solution to the context of cohomology. The focus here is o...
Steinberg, Robert
2016-01-01
Robert Steinberg's Lectures on Chevalley Groups were delivered and written during the author's sabbatical visit to Yale University in the 1967-1968 academic year. The work presents the status of the theory of Chevalley groups as it was in the mid-1960s. Much of this material was instrumental in many areas of mathematics, in particular in the theory of algebraic groups and in the subsequent classification of finite groups. This posthumous edition incorporates additions and corrections prepared by the author during his retirement, including a new introductory chapter. A bibliography and editorial notes have also been added. This is a great unsurpassed introduction to the subject of Chevalley groups that influenced generations of mathematicians. I would recommend it to anybody whose interests include group theory. -Efim Zelmanov, University of California, San Diego Robert Steinberg's lectures on Chevalley groups were given at Yale University in 1967. The notes for the lectures contain a wonderful exposition of ...
GS Department
2009-01-01
The CERN Medical Service and the Pensioners Association are pleased to invite CERN pensioners to a series of lectures given by professors and specialists from the Teaching Hospitals and the Faculty of Medicine of the University of Geneva on the following topic: PROMOTION OF OPTIMUM BRAIN AGEING The lectures will take place in the Main CERN Auditorium (Building 60) from 2.30 p.m. to 4.30 p.m. on the following dates: Thursday 15 January 2009: Diagnosing and treating Alzheimer’s disease Pr Gabriel GOLD Wednesday 25 February 2009: What is the brain reserve? Speaker’s name to be announced at a later date. The lectures will be given in French, with transparencies in English, and will be followed by a wide-ranging debate with the participants. CERN Medical Service - Pensioners Association - CERN-ESO (GAC-EPA)
Albert Einstein memorial lectures
Mechoulam, Raphael; The Israel Academy for Sciences and Humanities
2012-01-01
This volume consists of a selection of the Albert Einstein Memorial Lectures presented annually at the Israel Academy of Sciences and Humanities. Delivered by eminent scientists and scholars, including Nobel laureates, they cover a broad spectrum of subjects in physics, chemistry, life science, mathematics, historiography and social issues. This distinguished memorial lecture series was inaugurated by the Israel Academy of Sciences and Humanities following an international symposium held in Jerusalem in March 1979 to commemorate the centenary of Albert Einstein's birth. Considering that Einstein's interests, activities and influence were not restricted to theoretical physics but spanned broad fields affecting society and the welfare of humankind, it was felt that these memorial lectures should be addressed to scientists, scholars and erudite laypersons rather than to physicists alone.
Memory for Lectures: How Lecture Format Impacts the Learning Experience.
Trish L Varao-Sousa
Full Text Available The present study investigated what impact the presentation style of a classroom lecture has on memory, mind wandering, and the subjective factors of interest and motivation. We examined if having a professor lecturing live versus on video alters the learning experience of the students in the classroom. During the lectures, students were asked to report mind wandering and later complete a memory test. The lecture format was manipulated such that all the students received two lectures, one live and one a pre-recorded video. Results indicate that lecture format affected memory performance but not mind wandering, with enhanced memory in the live lectures. Additionally, students reported greater interest and motivation in the live lectures. Given that a single change to the classroom environment, professor presence, impacted memory performance, as well as motivation and interest, the present results have several key implications for technology-based integrations into higher education classrooms.
Memory for Lectures: How Lecture Format Impacts the Learning Experience.
Varao-Sousa, Trish L; Kingstone, Alan
2015-01-01
The present study investigated what impact the presentation style of a classroom lecture has on memory, mind wandering, and the subjective factors of interest and motivation. We examined if having a professor lecturing live versus on video alters the learning experience of the students in the classroom. During the lectures, students were asked to report mind wandering and later complete a memory test. The lecture format was manipulated such that all the students received two lectures, one live and one a pre-recorded video. Results indicate that lecture format affected memory performance but not mind wandering, with enhanced memory in the live lectures. Additionally, students reported greater interest and motivation in the live lectures. Given that a single change to the classroom environment, professor presence, impacted memory performance, as well as motivation and interest, the present results have several key implications for technology-based integrations into higher education classrooms.
Academic Training; Tel. 73127
2001-01-01
26, 27, 28 February and 1, 2 March REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 Recent Results on CP Violation and B Physics P.F. HARRISON / QMW, London, UK With the advent of the asymmetric B factories in Japan and the US, exciting new results on CP Violation and B Physics are starting to be achieved. In these lectures, we review the existing experimental and phenomenological context of these measurements, we compare and contrast the new experimental facilities and discuss the implications of the recent results on our understanding. Finally we summarise the prospects for future developments.
Kurosh, A G; Stark, M; Ulam, S
1965-01-01
Lectures in General Algebra is a translation from the Russian and is based on lectures on specialized courses in general algebra at Moscow University. The book starts with the basics of algebra. The text briefly describes the theory of sets, binary relations, equivalence relations, partial ordering, minimum condition, and theorems equivalent to the axiom of choice. The text gives the definition of binary algebraic operation and the concepts of groups, groupoids, and semigroups. The book examines the parallelism between the theory of groups and the theory of rings; such examinations show the
Twenty lectures on thermodynamics
Buchdahl, H A
2013-01-01
Twenty Lectures on Thermodynamics is a course of lectures, parts of which the author has given various times over the last few years. The book gives the readers a bird's eye view of phenomenological and statistical thermodynamics. The book covers many areas in thermodynamics such as states and transition; adiabatic isolation; irreversibility; the first, second, third and Zeroth laws of thermodynamics; entropy and entropy law; the idea of the application of thermodynamics; pseudo-states; the quantum-static al canonical and grand canonical ensembles; and semi-classical gaseous systems. The text
Dirac, Paul A M
2001-01-01
The author of this concise, brilliant series of lectures on mathematical methods in quantum mechanics was one of the shining intellects in the field, winning a Nobel prize in 1933 for his pioneering work in the quantum mechanics of the atom. Beyond that, he developed the transformation theory of quantum mechanics (which made it possible to calculate the statistical distribution of certain variables), was one of the major authors of the quantum theory of radiation, codiscovered the Fermi-Dirac statistics, and predicted the existence of the positron.The four lectures in this book were delivered
Academic Training; Tel. 73127
2001-01-01
26, 27, 28 February and 1, 2 March REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 Recent Results on CP Violation and B Physics P.F. HARRISON / QMW, London, UK With the advent of the asymmetric B factories in Japan and the US, exciting new results on CP Violation and B Physics are starting to be achieved. In these lectures, we review the existing experimental and phenomenological context of these measurements, we compare and contrast the new experimental facilities and discuss the implications of the recent results on our understanding. Finally we summarise the prospects for future developments.
Lectures on Constrained Systems
Date, Ghanashyam
2010-01-01
These lecture notes were prepared as a basic introduction to the theory of constrained systems which is how the fundamental forces of nature appear in their Hamiltonian formulation. Only a working knowledge of Lagrangian and Hamiltonian formulation of mechanics is assumed. These notes are based on the set of eight lectures given at the {\\em Refresher Course for College Teachers} held at IMSc during May-June, 2005. These are submitted to the arxiv for an easy access to a wider body of students.
[Wilson's disease: clinical spectrum of liver disease].
Ochoa Palominos, Alejandra; Ibáñez Samaniego, Luis; Catalina Rodríguez, María-Vega; Pajares Díaz, José; Clemente Ricote, Gerardo
2013-02-01
Wilson's disease is a hereditary autosomal recessive disorder of copper metabolism,characterized by copper accumulation in the liver and brain. This rare entity, which has a broad clinical spectrum, is often difficult to diagnose and should therefore always be suspected in patients with liver disease of unclear cause. We describe two types of manifestation of liver disease in two patients; the first developed fulminant hepatic failure requiring urgent liver transplantation and the second showed advanced chronic liver disease and received standard medical treatment. The objective of this clinical observation is to analyze the diagnosis of Wilson's disease in two patients with distinct onset, illustrating the broad clinical spectrum of the disease, and its treatment.
ADHM Revisited: Instantons and Wilson Lines
Tong, David
2014-01-01
We revisit the well-studied D0-D4 system of D-branes and its relationship to the ADHM construction. It is well known that the D0-branes appear as instantons in the D4-brane worldvolume. We add a Wilson line to the D4-brane in the guise of an extended fundamental string and determine how this affects the D0-brane dynamics. As the D0-brane moves in the presence of the Wilson line, it experiences a Lorentz force, proportional to its Yang-Mills gauge connection. From the perspective of the D0-brane quantum mechanics, this force emerges through the ADHM construction of the self-dual gauge connection.
Symmetries of Ginsparg-Wilson Chiral Fermions
Mandula, Jeffrey E
2009-01-01
The group structure of the variant chiral symmetry discovered by Luscher in the Ginsparg-Wilson description of lattice chiral fermions is analyzed. It is shown that the group contains an infinite number of linearly independent symmetry generators, and the Lie algebra is given explicitly. CP is an automorphism of this extended chiral group, and the CP transformation properties of the symmetry generators are found. The group has an infinite-parameter subgroup, and the factor group whose elements are its cosets is isomorphic to the continuum chiral symmetry group. Features of the currents associated with these symmetries are discussed, including the fact that some different, non-commuting symmetry generators lead to the same Noether current. These are universal features of lattice chiral fermions based on the Ginsparg-Wilson relation; they occur in the overlap, domain-wall, and perfect-action formulations. In a solvable example - free overlap fermions - these non-canonical elements of lattice chiral symmetry are...
Wilson fermions in the epsilon regime
Bär, Oliver; Schaefer, Stefan
2009-01-01
We extend the epsilon-expansion of continuum chiral perturbation theory to nonzero lattice spacing in the framework of Wilson Chiral Perturbation Theory. We distinguish various regimes by defining the relative power counting of the quark mass m and the lattice spacing a. We observe that for m ~ a Lambda^2_QCD, the explicit breaking of chiral symmetry in Wilson fermions is still driven by the quark mass and lattice corrections are highly suppressed. The lattice spacing effects become more pronounced for smaller quark masses and may lead to non-trivial corrections of the continuum results at next-to-leading order. We compute these corrections for standard current and density correlation functions. A fit to lattice data shows that these corrections are small, as expected.
Conformal anomaly of super Wilson loop
Belitsky, A V
2012-01-01
Classically supersymmetric Wilson loop on a null polygonal contour possesses all symmetries required to match it onto non-MHV amplitudes in maximally supersymmetric Yang-Mills theory. However, to define it quantum mechanically, one is forced to regularize it since perturbative loop diagrams are not well-defined due to presence of ultraviolet divergences stemming from integration in the vicinity of the cusps. A regularization that is adopted by practitioners by allowing one to use spinor helicity formalism, on the one hand, and systematically go to higher orders of perturbation theory is based on a version of dimensional regularization, known as Four-Dimensional Helicity scheme. Recently it was demonstrated that its use for the super Wilson loop at one loop breaks both conformal symmetry and Poincare supersymmetry. Presently, we exhibit the origin for these effects and demonstrate how one can undo this breaking. The phenomenon is alike the one emerging in renormalization group mixing of conformal operators in ...
Super Wilson Loops and Holonomy on Supermanifolds
Groeger, Josua
2013-01-01
The classical Wilson loop is the gauge-invariant trace of the parallel transport around a closed path with respect to a connection on a vector bundle over a smooth manifold. We build a precise mathematical model of the super Wilson loop, an extension introduced by Mason-Skinner and Caron-Huot, by endowing the objects occurring with auxiliary Gra{\\ss}mann generators coming from S-points. A key feature of our model is a supergeometric parallel transport, which allows for a natural notion of holonomy on a supermanifold as a Lie group valued functor. Our main results for that theory comprise an Ambrose-Singer theorem as well as a natural analogon of the holonomy principle. Finally, we compare our holonomy functor with the holonomy supergroup introduced by Galaev in the common situation of a topological point. It turns out that both theories are different, yet related in a sense made precise.
Bloch state tomography using Wilson lines
Li, Tracy; Duca, Lucia; Reitter, Martin; Grusdt, Fabian; Demler, Eugene; Endres, Manuel; Schleier-Smith, Monika; Bloch, Immanuel; Schneider, Ulrich
2016-05-01
Topology and geometry are essential to our understanding of modern physics, underlying many foundational concepts from high-energy theories, quantum information, and condensed-matter physics. In condensed-matter systems, a wide range of phenomena stem from the geometry of the band eigenstates, which is encoded in the matrix-valued Wilson line for general multiband systems. Using an ultracold gas of rubidium atoms loaded in a honeycomb optical lattice, we realize strong-force dynamics in Bloch bands that are described by Wilson lines and observe an evolution in the band populations that directly reveals the band geometry. Our technique enables a full determination of band eigenstates, Berry curvature, and topological invariants, including single- and multiband Chern and Z2 numbers.
Supersymmetric Wilson loops at two loops
Bassetto, Antonio; Pucci, Fabrizio; Seminara, Domenico
2008-01-01
We study the quantum properties of certain BPS Wilson loops in ${\\cal N}=4$ supersymmetric Yang-Mills theory. They belong to a general family, introduced recently, in which the addition of particular scalar couplings endows generic loops on $S^3$ with a fraction of supersymmetry. When restricted to $S^2$, their quantum average has been further conjectured to be exactly computed by the matrix model governing the zero-instanton sector of YM$_2$ on the sphere. We perform a complete two-loop analysis on a class of cusped Wilson loops lying on a two-dimensional sphere, finding perfect agreement with the conjecture. The perturbative computation reproduces the matrix-model expectation through a highly non-trivial interplay between ladder diagrams and self-energies/vertex contributions, suggesting the existence of a localization procedure.
[Severe hemolytic jaundice and Wilson's disease].
Storck, D; Bareiss, P; Jesel, B; Warter, J
1976-12-01
The onset of spontaneous hemolytic jaundice in a young subject should lead to the search for Wilson's disease when clinical examination reveals cirrhosis. This hemolysis may evolve in the form of severe jaundice to a stage where the cirrhosis remains usually latent or well tolerated. The intervention of a toxic, allergic of infective factor liable to produce a hepatic lesion which frees a dose of copper sufficient to trigger off hemolysis, is discussed. The mechanism of the latter, that of the coagulation disorders observed, liver cell failure and widespread intravascular coagulation, are analysed in this paper and compared with data in the literature. The dramatic character of the case indicates that it is necessary to treat as a routine with penicillamine all homozygous forms of Wilson's disease.
Lagrangian formulation of symmetric space sine-Gordon models
Bakas, Ioannis; Shin, H J; Park, Q Han
1996-01-01
The symmetric space sine-Gordon models arise by conformal reduction of ordinary 2-dim \\sigma-models, and they are integrable exhibiting a black-hole type metric in target space. We provide a Lagrangian formulation of these systems by considering a triplet of Lie groups F \\supset G \\supset H. We show that for every symmetric space F/G, the generalized sine-Gordon models can be derived from the G/H WZW action, plus a potential term that is algebraically specified. Thus, the symmetric space sine-Gordon models describe certain integrable perturbations of coset conformal field theories at the classical level. We also briefly discuss their vacuum structure, Backlund transformations, and soliton solutions.
Klein-Gordon oscillator in Kaluza-Klein theory
Carvalho, Josevi; Carvalho, Alexandre M. de M.; Cavalcante, Everton; Furtado, Claudio
2016-07-01
In this contribution we study the Klein-Gordon oscillator on the curved background within the Kaluza-Klein theory. The problem of the interaction between particles coupled harmonically with topological defects in Kaluza-Klein theory is studied. We consider a series of topological defects, then we treat the Klein-Gordon oscillator coupled to this background, and we find the energy levels and corresponding eigenfunctions in these cases. We show that the energy levels depend on the global parameters characterizing these spacetimes. We also investigate a quantum particle described by the Klein-Gordon oscillator interacting with a cosmic dislocation in Som-Raychaudhuri spacetime in the presence of homogeneous magnetic field in a Kaluza-Klein theory. In this case, the energy spectrum is determined, and we observe that these energy levels represent themselves as the sum of the terms related with Aharonov-Bohm flux and of the parameter associated to the rotation of the spacetime.
2017-01-01
We describe how Wilson’s concept of the renormalizationgroup revolutionized our understanding of the physics ofphase transitions, and of quantum field theory in general. Weunderline the key ideas of Wilson, based on earlier ideas ofLandau, Ginzburg, Kadanoff and many others, which gaveus an insight into the observed universality of diverse physicalphenomena, and the remarkable efficacy of a few simplemodels to describe them.
Rectangular Wilson Loops at Large N
Lohmayer, Robert
2012-01-01
This work is about pure Yang Mills theory in four Euclidean dimensions with gauge group SU(N). We study rectangular smeared Wilson loops on the lattice at large N and relatively close to the large-N transition point in their eigenvalue density. We show that the string tension can be extracted from these loops but obtain a shape dependence different from the prediction of effective string theory.
Symmetric Wilson Loops beyond leading order
Chen-Lin, Xinyi
2016-01-01
We study the circular Wilson loop in the symmetric representation of U(N) in $\\mathcal{N} = 4$ super-Yang-Mills (SYM). In the large N limit, we computed the exponentially-suppressed corrections for strong coupling, which suggests non-perturbative physics in the dual holographic theory. We also computed the next-to-leading order term in 1/N, and the result matches with the exact result from the k-fundamental representation.
Nucleon electromagnetic form factors with Wilson fermions
Goeckeler, M. [Regensburg Univ. (Germany). Inst. fuer Theoretische Physik; Haegler, P. [Technische Univ. Muenchen, Garching (Germany). Inst. fuer Theoretische Physik; Horsley, R. [Edinburgh Univ. (GB). School of Physics] (and others)
2007-10-15
The nucleon electromagnetic form factors continue to be of major interest for experimentalists and phenomenologists alike. They provide important insights into the structure of nuclear matter. For a range of interesting momenta they can be calculated on the lattice. The limiting factor continues to be the value of the pion mass. We present the latest results of the QCDSF collaboration using gauge configurations with two dynamical, non-perturbatively improved Wilson fermions at pion masses as low as 350 MeV. (orig.)
Anisotropy tuning with the Wilson flow
Borsanyi, S; Fodor, Z; Katz, S D; Krieg, S; Kurth, T; Mages, S; Schafer, A; Szabo, K K
2012-01-01
We use the Wilson flow to define the gauge anisotropy at a given physical scale. We demonstrate the use of the anisotropic flow by performing the tuning of the bare gauge anisotropy in the tree-level Symanzik action for several lattice spacings and target anisotropies. We use this method to tune the anisotropy parameters in full QCD, where we also exploit the diminishing effect of a well chosen smearing on the renormalization of the fermion anisotropy.
2010 PLASMONICS GORDON RESEARCH CONFERENCE/GORDON-KENAN GRADUATE STUDENT SEMINAR, JUNE 13-18
Naomi Halas
2010-06-18
The field of plasmonics lies at the forefront of current revolutionary developments in optics at nanoscale dimensions, with broad applications in the fields of biology, chemistry, and engineering. Advancing these applications will require an enhanced focus on the fundamental science of plasmonics in new and exotic regimes. This 2010 Gordon Conference on Plasmonics will focus on recent advances in fundamental and applied plasmonics. As with past conferences, this meeting will bring together top researchers and future leaders for substantial interactions between students, young speakers, and senior figures in the field. Participants should expect lively discussion during the sessions, intermingled with unstructured time where ideas move, collaborations form, and connections are made. Invited talks will cover a diverse range of topics, including active devices, coherence effects, metamaterials and cloaking, quantum optical phenomena, and plasmons in exotic media and in new wavelength regimes. At the conclusion of the conference, our final session will look forward and begin defining upcoming challenges and opportunities for plasmonics.
2012 PLANT CELL WALLS GORDON RESEARCH CONFERENCE AND GORDON RESEARCH SEMINAR, AUGUST 4-10, 2012
Rose, Jocelyn
2012-08-10
The sub-theme of this year’s meeting, ‘Cell Wall Research in a Post-Genome World’, will be a consideration of the dramatic technological changes that have occurred in the three years since the previous cell wall Gordon Conference in the area of DNA sequencing. New technologies are providing additional perspectives of plant cell wall biology across a rapidly growing number of species, highlighting a myriad of architectures, compositions, and functions in both "conventional" and specialized cell walls. This meeting will focus on addressing the knowledge gaps and technical challenges raised by such diversity, as well as our need to understand the underlying processes for critical applications such as crop improvement and bioenergy resource development.
The Legacy of G. Wilson Knight
Raw Laurence
2017-06-01
Full Text Available G. Wilson Knight (1897-1985 was one of the most influential Shakespearean critics of the mid-twentieth century. This piece surveys his work from 1930 until the early 1980s. Much affected by the First World War, he developed a style of criticism based on Christian principles of respect for other people and belief in an all-powerful God. Many of his most famous pieces (in THE WHEEL OF FIRE, for instance argue for human insignificance in an indifferent universe. It is up to all of us as individuals to develop methods of coping with this world. Wilson Knight’s ideas gained particular currency during the Second World War, when Britain’s very future seemed at risk due to the threat of Nazi invasion. Although much derided for his use of transcendent language—especially by his contemporary F. R. Leavis—Wilson Knight’s ideas seem to have acquired new significance in a globalized world, where individuals fight to main their identity in a technology-driven environment.
Ted Wilson passes on the torch
2003-01-01
As part of the Laboratory's outreach programme, the CERN Accelerator School (CAS) brings together students and experienced physicists from all over the world with the aim of promoting the understanding of accelerator physics. As head of the School for 11 years, Ted Wilson became a CERN ambassador to the outside community. He retired in March, handing over the reigns of the CAS to Daniel Brandt. Ted Wilson and his assistant, Suzanne von Wartburg, during an EPAC meeting in 1994.The accelerator schools allowed some time for relaxation in the local surrounding for students as well as for the director of CAS.As a boy, Ted Wilson could have embarked on a career in pop music rather than physics, rubbing shoulders at secondary school in Liverpool with two of the future Beatles. But prefering classical music and answering the call of science, he took the more serious of the two paths, studying physics first at Oxford University then at the Rutherford Laboratory. After a year at CERN and four years at the Rutherford La...
The Harvey lectures, Series 82
Botstein, D.; Cech, T.R.; Hille, B.; Lodish, H.F.; Majerus, P.W.
1988-01-01
The Harvey Lecture Series is published annually and provides reviews of research topics in the biomedical sciences. Eight lectures by investigators are included in the volume representing the most recent work in the major laboratories.
2007 Plant Metabolic Engineering Gordon Conference and Graduate Research Seminar
Erich Grotewold
2008-09-15
Plant Metabolic Engineering is an emerging field that integrates a diverse range of disciplines including plant genetics, genomics, biochemistry, chemistry and cell biology. The Gordon-Kenan Graduate Research Seminar (GRS) in Plant Metabolic Engineering was initiated to provide a unique opportunity for future researcher leaders to present their work in this field. It also creates an environment allowing for peer-review and critical assessment of work without the intimidation usually associated with the presence of senior investigators. The GRS immediately precedes the Plant Metabolic Engineering Gordon Research Conference and will be for and by graduate students and post-docs, with the assistance of the organizers listed.
Considerations on the hyperbolic complex Klein-Gordon equation
Ulrych, S
2010-01-01
The article summarizes and consolidates investigations on hyperbolic complex numbers with respect to the Klein-Gordon equation for fermions and bosons. The hyperbolic complex numbers are applied in the sense that complex extensions of groups and algebras are performed not with the complex unit, but with the product of complex and hyperbolic unit. The modified complexification is the key ingredient for the theory. The Klein-Gordon equation is represented in this framework in the form of the first invariant of the Poincar\\'e group, the mass operator, in order to emphasize its geometric origin. The possibility of new interactions arising from hyperbolic complex gauge transformations is discussed.
Thomas Gordon'S Communicative Pedagogy in Modern Educational Realities
Leshchenko Maria
2014-12-01
Full Text Available In the article the principles, strategies, methods, techniques of communicative pedagogy of American scientist Thomas Gordon and system components of effective communication training for parents, teachers and administrators are enlightened. It has been determined that the main principle of Thomas Gordon's pedagogy is an interactive way of knowing the world, which is realized within communicative activities through which any views and opinions are transferred to the partner, and his reflection on the expressed opinion is perceived that helps enrich the experience of interpersonal interaction.
Overlaps after quantum quenches in the sine-Gordon model
Horváth, D. X.; Takács, G.
2017-08-01
We present a numerical computation of overlaps in mass quenches in sine-Gordon quantum field theory using truncated conformal space approach (TCSA). To improve the cut-off dependence of the method, we use a novel running coupling definition which has a general applicability in free boson TCSA. The numerical results for the first breather overlaps are compared with the analytic continuation of a previously proposed analytical Ansatz for the initial state in a related sinh-Gordon quench, and good agreement is found between the numerical data and the analytical prediction in a large energy range.
Sudden interaction quench in the quantum sine-Gordon model
Sabio, Javier [Instituto de Ciencia de Materiales de Madrid (CSIC), Sor Juana Ines de la Cruz 3, E-28049 Madrid (Spain); Kehrein, Stefan, E-mail: javier.sabio@icmm.csic.e [Arnold-Sommerfeld-Center for Theoretical Physics, Center for NanoSciences and Department fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Theresienstrasse 37, 80333 Muenchen (Germany)
2010-05-15
We study a sudden interaction quench in the weak-coupling regime of the quantum sine-Gordon model. The real time dynamics of the bosonic mode occupation numbers is calculated using the flow equation method. While we cannot prove results for the asymptotic long-time limit, we can establish the existence of an extended regime in time where the mode occupation numbers relax to twice their equilibrium values. This factor two indicates a non-equilibrium distribution and is a universal feature of weak interaction quenches. The weak-coupling quantum sine-Gordon model therefore turns out to be on the borderline between thermalization and non-thermalization.
Abundant Interaction Solutions of Sine-Gordon Equation
DaZhao Lü
2012-01-01
Full Text Available With the help of computer symbolic computation software (e.g., Maple, abundant interaction solutions of sine-Gordon equation are obtained by means of a constructed Wronskian form expansion method. The method is based upon the forms and structures of Wronskian solutions of sine-Gordon equation, and the functions used in the Wronskian determinants do not satisfy linear partial differential equations. Such interaction solutions are difficultly obtained via other methods. And the method can be automatically carried out in computer.
Klein-Gordon and Dirac Equations with Thermodynamic Quantities
Arda, Altuğ; Tezcan, Cevdet; Sever, Ramazan
2016-03-01
We study the thermodynamic quantities such as the Helmholtz free energy, the mean energy and the specific heat for both the Klein-Gordon, and Dirac equations. Our analyze includes two main subsections: (1) statistical functions for the Klein-Gordon equation with a linear potential having Lorentz vector, and Lorentz scalar parts (2) thermodynamic functions for the Dirac equation with a Lorentz scalar, inverse-linear potential by assuming that the scalar potential field is strong ( A ≫ 1). We restrict ourselves to the case where only the positive part of the spectrum gives a contribution to the sum in partition function. We give the analytical results for high temperatures.
77 FR 51023 - R. Gordon Gooch v. Colonial Pipeline Company; Notice of Complaint
2012-08-23
... Energy Regulatory Commission R. Gordon Gooch v. Colonial Pipeline Company; Notice of Complaint Take... 343.2 (2012)), R. Gordon Gooch (Complainant) filed a formal complaint against Colonial Pipeline.... R. Gordon Gooch states that a copy of the Complaint has been served on the contact for...
McDonald, James E. R.
2008-01-01
The technology of podcasting, or creating audio or video files that can be subscribed to over the Internet, has grown in popularity over the past few years. Many educators have already begun realizing the potential of delivering such customized content, but most efforts have focused on lecture-style humanities courses or multimedia arts courses.…
Aiken, Warren R.
1980-01-01
Techniques that can be used to make the lecture method of teaching more effective include using pictures or objects to facilitate memory, using guided fantasies to stimulate students' imagination of processes, and the suggestopedia method for memorizing facts, principles, and vocabulary. (MSE)
Participatory Lecture Demonstrations.
Battino, Rubin
1979-01-01
The use of participatory lecture demonstrations in the classroom is described. Examples are given for the following topics: chromatography, chemical kinetics, balancing equations, the gas laws, kinetic molecular theory, Henry's law of gas solubility, electronic energy levels in atoms, and translational, vibrational, and rotational energies of…
Summer Student Lecture Programme
2004-01-01
Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Monday 2 August 09:15 - 10:00 P. Wells (CERN) The Higgs Saga at LEP 10:15 - 11:00 G. Cowan (Univ. of London) Introduction to Statistics (2/3) 11:15 - 12:00 G. Cowan (Univ. of London) Introduction to Statistics (3/3) DATE TIME LECTURER TITLE Tuesday 3 August 09:15 - 10:00 P. Sphicas (CERN) Trigger and Data Acquisition Systems (1/2) 10:15 - 11:00 R. Jacobsen (LBLN) From Raw Data to Physics Results (1/2) 11:15 - 12:00 R. Jacobsen (LBLN) G. Cowan (University of London) Discussion Session DATE TIME LECTURER TITLE Wednesday 4 August 09:15 - 10:00 P. Sphicas (CERN) Trigger and Data Acquisition Systems (2/2) 10:15 - 11:00 R. Jacobsen (LBLN) From Raw Data to Physics Results (2/2) 11:15 - 12:00 N. Palanque-Delabrouille (CEA) Astroparticle Physics (1/3) DATE TIME LECTURER TITLE Thursday 5 August 09:15 - 10:00 N. Palanque-Delabrouille (CEA) Astroparticle Physics (2/3) 10:15 - 11:00 N. Palanque-Delabrouille (CEA) A...
Holst-Christensen, Bo
the students problems from the educator to the students. By using techniques that put more weight on student participation, cooperation and preparation, I have been able to cut significantly down on the time used for lecturing, allowing more time for student work and reflection. As an example by getting...
Aiken, Warren R.
1980-01-01
Techniques that can be used to make the lecture method of teaching more effective include using pictures or objects to facilitate memory, using guided fantasies to stimulate students' imagination of processes, and the suggestopedia method for memorizing facts, principles, and vocabulary. (MSE)
Van Meter, Donald E.
1994-01-01
Surveyed students taking a natural resource conservation course to determine the effects of computer software that provides tools for creating and managing visual presentations to students. Results indicated that 94% of the respondents believed computer-aided lectures helped them and recommended their continued use; note taking was more effective,…
Zwier, Timothy
2012-07-20
At the 2012 Atomic and Molecular Interactions Gordon Conference, there will be talks in several broadly defined and partially overlapping areas: Intramolecular and single-collision reaction dynamics; Photophysics and photochemistry of excited states; Clusters, aerosols and solvation; Interactions at interfaces; Conformations and folding of large molecules; Interactions under extreme conditions of temperature and pressure. The theme of the Gordon Research Seminar on Atomic & Molecular Interactions, in keeping with the tradition of the Atomic and Molecular Interactions Gordon Research Conference, is far-reaching and involves fundamental research in the gas and condensed phases along with application of these ideas to practical chemical fields. The oral presentations, which will contain a combination of both experiment and theory, will focus on four broad categories: Ultrafast Phenomena; Excited States, Photoelectrons, and Photoions; Chemical Reaction Dynamics; Biomolecules and Clusters.
Usage Reporting on Recorded Lectures
Gorissen, Pierre; Bruggen, Jan van; Jochems, Wim
2012-01-01
This study analyses the interactions of students with the recorded lectures. We report on an analysis of students' use of recorded lectures at two Universities in the Netherlands. The data logged by the lecture capture system (LCS) is used and combined with collected survey data. We describe the pro
Webster, R. Scott
2015-01-01
In response to the lecture format coming under "attack" and being replaced by online materials and smaller tutorials, this paper attempts to offer not only a defence but also to assert that the potential value of the lecture is difficult to replicate through other learning formats. Some of the criticisms against lectures will be…
Cell therapy to remove excess copper in Wilson's disease.
Gupta, Sanjeev
2014-05-01
To achieve permanent correction of Wilson's disease by a cell therapy approach, replacement of diseased hepatocytes with healthy hepatocytes is desirable. There is a physiological requirement for hepatic ATP7B-dependent copper (Cu) transport in bile, which is deficient in Wilson's disease, producing progressive Cu accumulation in the liver or brain with organ damage. The ability to repopulate the liver with healthy hepatocytes raises the possibility of cell therapy in Wilson's disease. Therapeutic principles included reconstitution of bile canalicular network as well as proliferation in transplanted hepatocytes, despite toxic amounts of Cu in the liver. Nonetheless, cell therapy studies in animal models elicited major differences in the mechanisms driving liver repopulation with transplanted hepatocytes in Wilson's disease versus nondiseased settings. Recently, noninvasive imaging was developed to demonstrate Cu removal from the liver, including after cell therapy in Wilson's disease. Such developments will help advance cell/gene therapy approaches, particularly by offering roadmaps for clinical trials in people with Wilson's disease.
Feynman Lectures on Gravitation
Borcherds, P
2003-05-21
In the early 1960s Feynman lectured to physics undergraduates and, with the assistance of his colleagues Leighton and Sands, produced the three-volume classic Feynman Lectures in Physics. These lectures were delivered in the mornings. In the afternoons Feynman was giving postgraduate lectures on gravitation. This book is based on notes compiled by two students on that course: Morinigo and Wagner. Their notes were checked and approved by Feynman and were available at Caltech. They have now been edited by Brian Hatfield and made more widely available. The book has a substantial preface by John Preskill and Kip Thorne, and an introduction entitled 'Quantum Gravity' by Brian Hatfield. You should read these before going on to the lectures themselves. Preskill and Thorne identify three categories of potential readers of this book. 1. Those with a postgraduate training in theoretical physics. 2. 'Readers with a solid undergraduate training in physics'. 3. 'Admirers of Feynman who do not have a strong physics background'. The title of the book is perhaps misleading: readers in category 2 who think that this book is an extension of the Feynman Lectures in Physics may be disappointed. It is not: it is a book aimed mainly at those in category 1. If you want to get to grips with gravitation (and general relativity) then you need to read an introductory text first e.g. General Relativity by I R Kenyon (Oxford: Oxford University Press) or A Unified Grand Tour of Theoretical Physics by Ian D Lawrie (Bristol: IoP). But there is no Royal Road. As pointed out in the preface and in the introduction, the book represents Feynman's thinking about gravitation some 40 years ago: the lecture course was part of his attempts to understand the subject himself, and for readers in all three categories it is this that makes the book one of interest: the opportunity to observe how a great physicist attempts to tackle some of the hardest challenges of physics
Handouts: making the lecture portable.
Kroenke, K
1991-01-01
Previous medical literature on preparing lecture handouts has focused on their use in student education, where as part of a course there is a series of lectures followed by an examination. Conversely, resident and practising physicians usually attend single lectures on individual topics in order to update and improve their clinical skills. Handouts designed for the latter type of lecture can serve as a useful resource in subsequent day-to-day teaching and patient care. This article examines the purpose, distribution, structure, and substance of such handouts. Guidelines to assist the speaker in preparing lecture handouts are discussed.
2012 Gordon Research Conference, Organometallic Chemistry, 8-13 2012
Hillhouse, Gregory [Univ. of Chicago, IL (United States)
2012-07-13
The 2012 Organometallic Chemistry Gordon Research Conference will highlight new basic science and fundamental applications of organometallic chemistry in industrial, academic, and national lab settings. Scientific themes of the conference will include chemical synthesis, reactivity, catalysis, polymer chemistry, bonding, and theory that involve transition-metal (and main-group) interactions with organic moieties.
Nonlinear dynamics of a parametrically driven sine-Gordon system
Grønbech-Jensen, Niels; Kivshar, Yuri S.; Samuelsen, Mogens Rugholm
1993-01-01
We consider a sine-Gordon system, driven by an ac parametric force in the presence of loss. It is demonstrated that a breather can be maintained in a steady state at half of the external frequency. In the small-amplitude limit the effect is described by an effective nonlinear Schrodinger equation...
Phonons and solitons in the "thermal" sine-Gordon system
Salerno, Mario; Jørgensen, E.; Samuelsen, Mogens Rugholm
1984-01-01
Standard methods of stochastic processes are used to study the coupling of the sine-Gordon system with a heat reservoir. As a result we find thermal phonons with an average energy of kB T per mode. The translational mode (zero mode) is found to carry an average energy of 1 / 2kBT. This last value...
Soliton annihilation in the perturbed sine-Gordon system
Pedersen, Niels Falsig; Samuelsen, Mogens Rugholm; Welner, D.
1984-01-01
Fluxon-antifluxon annihilation in the perturbed sine-Gordon equation with loss and driving terms is investigated. For the infinite line we find a simple analytic expression for the threshold driving term corresponding to annihilation. With the application of the results to a Josephson junction...
Perturbation analysis of a parametrically changed sine-Gordon equation
Sakai, S.; Samuelsen, Mogens Rugholm; Olsen, O. H.
1987-01-01
A long Josephson junction with a spatially varying inductance is a physical manifestation of a modified sine-Gordon equation with parametric perturbation. Soliton propagation in such Josephson junctions is discussed. First, for an adiabatic model where the inductance changes smoothly compared...
Experimental Investigation of Trapped Sine-Gordon Solitons
Davidson, A.; Dueholm, B.; Kryger, B.
1985-01-01
We have observed for the first time a single sine-Gordon soliton trapped in an annular Josephson junction. This system offers a unique possibility to study undisturbed soliton motion. In the context of perturbation theory, the soliton may be viewed as a relativistic particle moving under a uniform...
Rotationally symmetric numerical solutions to the sine-Gordon equation
Olsen, O. H.; Samuelsen, Mogens Rugholm
1981-01-01
We examine numerically the properties of solutions to the spherically symmetric sine-Gordon equation given an initial profile which coincides with the one-dimensional breather solution and refer to such solutions as ring waves. Expanding ring waves either exhibit a return effect or expand towards...
Becoming the University: Early Presidential Discourses of Gordon Gee
Rishell, Michael W.
2011-01-01
The author explores Gordon Gee's career as a university president. There is a special focus on the journey Gee made between 1990, when he first became president of The Ohio State University, to 2007, when he returned to Ohio State for another term as university president ten years later. During this time away from Ohio State, he served as the…
Simplicity of extremal eigenvalues of the Klein-Gordon equation
Koppen, Mario; Winklmeier, Monika
2010-01-01
We consider the spectral problem associated with the Klein-Gordon equation for unbounded electric potentials. If the spectrum of this problem is contained in two disjoint real intervals and the two inner boundary points are eigenvalues, we show that these extremal eigenvalues are simple and possess strictly positive eigenfunctions. Examples of electric potentials satisfying these assumptions are given.
Complex sine-Gordon Equation in Coherent Optical Pulse Propagation
Park, Q H
1999-01-01
It is shown that the McCall-Hahn theory of self-induced transparency in coherent optical pulse propagation can be identified with the complex sine-Gordon theory in the sharp line limit. We reformulate the theory in terms of the deformed gauged Wess-Zumino-Witten sigma model and address various new aspects of self-induced transparency.
Bidifferential Calculus, Matrix SIT and Sine-Gordon Equations
A. Dimakis
2011-01-01
Full Text Available We express a matrix version of the self-induced transparency (SIT equations in the bidifferential calculus framework. An infinite family of exact solutions is then obtained by application of a general result that generates exact solutions from solutions of a linear system of arbitrary matrix size. A side result is a solution formula for the sine-Gordon equation.
N=1 super sinh-Gordon model with defects revisited
Aguirre, A R; Spano, N I; Zimerman, A H
2014-01-01
The Lax pair formalism is considered to discuss the integrability of the N=1 supersymmetric sinh-Gordon model with a defect. We derive associated defect matrix for the model and construct the generating functions of the modified conserved quantities. The corresponding defect contributions for the modified energy and momentum of the model are explicitly computed.
Breather compactons in nonlinear Klein-Gordon systems.
Dinda, P T; Remoissenet, M
1999-11-01
We demonstrate the existence of a localized breathing mode with a compact support, i.e., a stationary breather compacton, in a nonlinear Klein-Gordon system. This breather compacton results from a delicate balance between the harmonicity of the substrate potential and the total nonlinearity induced by the substrate potential and the coupling forces between adjacent lattice sites.
A Search on the Klein-Gordon Equation
B. G(o)nül
2006-01-01
@@ The s-wave Klein-Gordon equation for the bound states is separated in two parts to see clearly the relativistic contributions to the solution in the non-relativistic limit. The reliability of the model is discussed with two examples chosen specifically.
Clinical zinc deficiency as early presentation of Wilson disease.
Van Biervliet, Stephanie; Küry, Sébastien; De Bruyne, Ruth; Vanakker, Olivier M; Schmitt, Sébastien; Vande Velde, Saskia; Blouin, Eric; Bézieau, Stéphane
2015-04-01
Wilson disease is a rare autosomal recessive disorder of the copper metabolism caused by homozygous or compound heterozygous mutations in the ATP-ase Cu(2+) transporting polypeptide (ATP7B) gene. The copper accumulation in different organs leads to the suspicion of Wilson disease. We describe a child with clinical zinc deficiency as presenting symptom of Wilson disease, which was confirmed by 2 mutations within the ATP7B gene and an increased copper excretion.
Intractable Rickets as Presenting Feature of Wilson's Disease
A Bahrami-Ahmadi
2004-10-01
Full Text Available Rickets by definition is a condition in which the bone mineralization is defective. Among the large cause of Rickets (Vitamin D deficiency, gastrointestinal disorders, acidosis, renal tubular abnormalities..., Wilson's disease is a relatively rare cause. There are few cases of Wilson's disease presenting first as rickets in the literature. Here we present an Afghan girl with Wilson's disease presenting with intractable Rickets.
Molecular studies of ceruloplasmin deficiency in Wilson's disease.
Czaja, M J; Weiner, F R; Schwarzenberg, S J; Sternlieb, I.; Scheinberg, I. H.; Van Thiel, D.H.; LaRusso, N F; Giambrone, M. A.; Kirschner, R.; Koschinsky, M L
1987-01-01
Deficiency of serum ceruloplasmin is a characteristic biochemical abnormality of Wilson's disease, although the mechanism of this finding is unknown. Ceruloplasmin messenger RNA (mRNA) levels were therefore examined in five patients with Wilson's disease and five controls with other types of hepatic disease. Northern and dot blot hybridizations showed that detectable ceruloplasmin mRNA was present in all of the patients with Wilson's disease, including one patient with no detectable serum cer...
Exploring Tablet PC Lectures: Lecturer Experiences and Student Perceptions in Biomedicine
Choate, Julia; Kotsanas, George; Dawson, Phillip
2014-01-01
Lecturers using tablet PCs with specialised pens can utilise real-time changes in lecture delivery via digital inking. We investigated student perceptions and lecturer experiences of tablet PC lectures in large-enrolment biomedicine subjects. Lecturers used PowerPoint or Classroom Presenter software for lecture preparation and in-lecture pen-based…
Procedural learning changes in patients with Wilson's disease
Yumei Jiang; Xiang Shen; Xiaoping Wang; Wenjie Li
2011-01-01
In the present study, we compared explicit memory performance, using the Wechsler Memory Scale, and implicit memory performance, using the Nissen software version of the serial reaction time task, in patients with Wilson's disease to normal controls. The Wilson's disease patients exhibited deficits in explicit memory tasks, such as figure recall and understanding memory. Moreover, the Wilson's disease patients exhibited deficits in implicit memory tasks, including significantly prolonged response times. These findings indicate that Wilson's disease patients have explicit and implicit partial memory impairments.
Françoise Benz
2002-01-01
18, 19, 20, 21, 22 November LECTURE FOR POSTGRADUATE STUDENTS From 11:00 hrs - Main Auditorium bldg. 500 Telling the Truth with Statistics R. Barlow / Univ. of Manchester, UK This course of lectures will cover probability, distributions, fitting, errors and confidence levels, for practising High Energy Physicists who need to use Statistical techniques to express their results. Concentrating on these appropriate specialist techniques means that they can be covered in appropriate depth, while assuming only the knowledge and experience of a typical Particle Physicist. The different definitions of probability will be explained, and it will be appear why this basic subject is so controversial; there are several viewpoints and it is important to understand them all, rather than abusing the adherents of different beliefs. Distributions will be covered: the situations they arise in, their useful properties, and the amazing result of the Central Limit Theorem. Fitting a parametrisation to a set of data is one of the m...
Academic Training; Tel. 73127
2001-01-01
23, 24, 25, 26 and 27 April REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500, on 23 April from 11:15 to 12:15 hrs Searches for Dark Matter F. Feinstein / CPPM, Marseille, F The fact that the mass of the visible stars could not account for the gravitational cohesion of the galaxy clusters was the first manifestation of non-radiating matter in the Universe. Since then, many observations imply that most of the matter is indeed dark. Its nature is still unknown and likely to have several contributions. Recent results indicate that most of it may not be composed of normal matter. These lectures will review the experimental methods, which have been developed to unravel this 70-year long mystery and confront their results with the current theoretical framework of cosmology.
2007-01-01
The LHC: an accelerator of science This series of lectures is all about understanding the scientific and technological challenges of the phenomenal LHC project and assessing its innovations through their everyday applications. Come and take a sneak preview of the LHC! Communicate: the Grid, a computer of global dimensions François Grey, head of communication in CERN’s Information Technology Department How will it be possible for the 15 million billion bytes of data generated by the LHC every year to be handled and stored by a computer that doesn’t have to be the size of a skyscraper? The computer scientists have the answer: the Grid, which will harness the power of tens of thousands of computers all over the world by creating a network of computers and making them operate as one. >>> Lectures are free and require no specialist knowledge. In french. >>> By reservation only: tel. +41 (0)22 767 76 76
Vandoren, Stefan
2008-01-01
This is a self-contained set of lecture notes on instantons in (super) Yang-Mills theory in four dimensions and in quantum mechanics. First the basics are derived from scratch: the regular and singular one-instanton solutions for Yang-Mills theories with gauge groups SU(2) and SU(N), their bosonic and fermionic zero modes, the path integral instanton measure, and supersymmetric Yang-Mills theories in Euclidean space. Then we discuss applications: the \\theta-angle of QCD, the solution of the U(1) problem, the way Higgs fields solve the large-instanton problem, and tunneling and phase transitions in quantum mechanics and in nonabelian gauge theories. These lecture notes are an extension of a review on Yang-Mills and D-instantons written in 2000 by both authors and A.Belitsky
CERN. Geneva
2013-01-01
Computer security has been an increasing concern for IT professionals for a number of years, yet despite all the efforts, computer systems and networks remain highly vulnerable to attacks of different kinds. Design flaws and security bugs in the underlying software are among the main reasons for this. This lecture addresses the following question: how to create secure software? The lecture starts with a definition of computer security and an explanation of why it is so difficult to achieve. It then introduces the main security principles (like least-privilege, or defense-in-depth) and discusses security in different phases of the software development cycle. The emphasis is put on the implementation part: most common pitfalls and security bugs are listed, followed by advice on best practice for security development, testing and deployment. Sebastian Lopienski is CERN’s deputy Computer Security Officer. He works on security strategy and policies; offers internal consultancy and audit services; develops and ...
Gomberoff, Andres
2006-01-01
The 2002 Pan-American Advanced Studies Institute School on Quantum Gravity was held at the Centro de Estudios Cientificos (CECS),Valdivia, Chile, January 4-14, 2002. The school featured lectures by ten speakers, and was attended by nearly 70 students from over 14 countries. A primary goal was to foster interaction and communication between participants from different cultures, both in the layman’s sense of the term and in terms of approaches to quantum gravity. We hope that the links formed by students and the school will persist throughout their professional lives, continuing to promote interaction and the essential exchange of ideas that drives research forward. This volume contains improved and updated versions of the lectures given at the School. It has been prepared both as a reminder for the participants, and so that these pedagogical introductions can be made available to others who were unable to attend. We expect them to serve students of all ages well.
Academic Training; Tel. 73127
2001-01-01
2, 3, 4, 5 and 6 April REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 New Developments in Supersymmetry S. Raby / CERN-TH Introduction to supersymmetric grand unified theories. An introduction to the MSSM and different mechanisms for supersymmetry breaking. Then the details of SU(5) and SO(10) unification, the new gauge sector beyond the standard model, representations of quarks and leptons. Gauge and Yukawa coupling unification and some predictions.
Nawata, Satoshi
2015-01-01
We provide various formulations of knot homology that are predicted by string dualities. In addition, we also explain the rich algebraic structure of knot homology which can be understood in terms of geometric representation theory in these formulations. These notes are based on lectures in the workshop "Physics and Mathematics of Link Homology" at Centre de Recherches Math\\'ematiques, Universit\\'e de Montr\\'eal.
Lectures on classical electrodynamics
Englert, Berthold-Georg
2014-01-01
These lecture notes cover classical electrodynamics at the level of advanced undergraduates or postgraduates. There is a strong emphasis on the general features of the electromagnetic field and, in particular, on the properties of electromagnetic radiation. It offers a comprehensive and detailed, as well as self-contained, account of material that can be covered in a one-semester course for students with a solid undergraduate knowledge of basic electricity and magnetism.
Academic Training; Tel. 73127
2001-01-01
9, 10 and 11 May REGULAR LECTURE PROGRAMME From 10:00 to 12:00 hrs on 9 and 10 May and on 11 May from 11:00 to 12:00 hrs - Main Auditorium bldg. 500 Cosmology and Particle Physics K. Olive / CERN-TH A general overview of the standard big bang model will be presented with special emphasis on astro-particle physics. Specific topics will include: Inflation, Baryoogenesis, Nucleosynthesis and Dark Matter.
Jacob,M
1987-01-01
Troisième série de "Gregory lectures" en mémoire de B.Gregory (1919-1977),DG de 1965 à 1970. La première conférence B.Gregory a été donné par le Prof.V.Weisskopf, son prédécesseur. Chris Greeg (?)de Berkley prend aussi la parole
Plehn, Tilman
2009-01-01
When we try to advance from a solid knowledge of field theory to LHC physics we usually encounter a frustrating problem: in particular Higgs physics and QCD techniques appear as a impenetrable granite block of phenomenological know-how, common lores, and historically grown intuition what works and what does not. I hope this lecture can drill a few holes into the rock and put you into a position to digest advanced writeups as well as some first research papers on the topic.
SC Unit
2008-01-01
The CERN Medical Service and the Pensioners Association are pleased to invite CERN pensioners to a series of lectures given by professors and specialists from the Teaching Hospitals and the Faculty of Medicine of the University of Geneva on the following topic: PROMOTION OF OPTIMUM BRAIN AGEING The lectures will take place in the Main CERN Auditorium (Building 60) from 2.30 p.m. to 4.30 p.m. on the following dates: Wednesday 12 November 2008: Assessing the extent of brain ageing Dr Dina ZEKRY Friday 12 December 2008: Can memory decline be prevented? Pr Jean-Pierre MICHEL Thursday 15 January 2009: Diagnosing and treating Alzheimer’s disease Pr Gabriel GOLD Wednesday 25 February 2009: What is the brain reserve? Speaker’s name to be announced at a later date The lectures will be given in French, with transparencies in English, and will be followed by a wide-ranging debate with the participants. CERN Medical Service - Pensioners Association - CERN-ESO (GAC-EPA)
Summer Student Lecture Programme
2004-01-01
Main Auditorium, bldg. 500 More Information DATE TIME LECTURER TITLE Wednesday 7 July 09:15 - 10:00 L. Fayard, O. Ullaland, D. Heagerty (CERN) Programme Presentation Workshops presentation Information on Computing Rules 10:15 - 11:00 R. Aymar (CERN) Introduction to CERN (1/2) 11:15 - 12:00 J. Engelen (CERN) Introduction to CERN (2/2) 15:00 - 16:30 H. Menzel (CERN) An Introduction to Radiation Protection DATE TIME LECTURER TITLE Thursday 8 july 09:15 - 10:00 L. Di Lella (CERN) Introduction to Particle Physics (1/4) 10:15 - 11:00 L. Di Lella (CERN) Introduction to Particle Physics (2/4) 11:15 - 12:00 P. Chomaz (GANIL / CERN) Fundamental questions in modern nuclear physics: The challenge of exotic nuclei (1/2) DATE TIME LECTURER TITLE Friday 9 July 09:15 - 10:00 L. Di Lella (CERN) Introduction to Particle Physics (3/4) 10:15 - 11:00 P. Chomaz (GANIL / CERN) Fundamental questions in modern nuclear physics: The challenge of exotic nuclei (2/2) 11:15 - 12:00 P....
Academic Training; Tel. 73127
2001-01-01
5, 6, 7, 8 and 9 March REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 Tracking at the LHC K. Safarik / CERN-EP The lecture will start with a short history of particle tracking in high-energy physics. Then we will concentrate on tracking in the LHC experiments. We will discuss various tracking devices proposed for these experiments, dividing them into two large groups: solid state detectors and gas detectors. Their characteristics, as well as their behaviour in different external conditions (i.e. magnetic field, radiation) will be compared. Furthermore, we will turn to the question: how to design a tracker using these various technologies, what are the essential parameters to be taken into account and we will apply these considerations to the proposed the LHC detectors. The last part of the lecture will be devoted to tracking software. We will mention simulation and concentrate on track finding and reconstruction, reviewing different algorithms prototyped for the LHC experiments. We will ...
SC Unit
2008-01-01
The CERN Medical Service and the Pensioners Association are pleased to invite CERN pensioners to a series of lectures given by professors and specialists from the Teaching Hospitals and the Faculty of Medicine of the University of Geneva on the following topic: PROMOTION OF OPTIMUM BRAIN AGEING The lectures will take place in the Main CERN Auditorium (Building 60) from 2.30 p.m. to 4.30 p.m. on the following dates: Wednesday 12 November 2008: Assessing the extent of brain ageing Dr Dina ZEKRY Friday 12 December 2008: Can memory decline be prevented? Pr Jean-Pierre MICHEL Thursday 15 January 2009: Diagnosing and treating Alzheimer’s disease Pr Gabriel GOLD Wednesday 25 February 2009: What is the brain reserve? Speaker’s name to be announced at a later date The lectures will be given in French, with transparencies in English, and will be followed by a wide-ranging debate with the participants. CERN Medical Service - Pensioners Association - CERN-ESO (GAC-EPA)
Steven Goldfarb
Web Archives of ATLAS Plenary Sessions, Workshops, Meetings, and Tutorials recorded over the past two years are available via the University of Michigan portal here. Most recent additions include the ROOT Workshop held at CERN on March 26-27, the Physics Analysis Tools Workshop held in Bergen, Norway on April 23-27, and the CTEQ Workshop: "Physics at the LHC: Early Challenges" held at Michigan State University on May 14-15. Viewing requires a standard web browser with RealPlayer plug-in (included in most browsers automatically) and works on any major platform. Lectures can be viewed directly over the web or downloaded locally. In addition, you will find access to a variety of general tutorials and events via the portal. Suggestions for events or tutorials to record in 2007, as well as feedback on existing archives is always welcome. Please contact us at wlap@umich.edu. Thank you and enjoy the lectures! The Michigan Web Lecture Team Tushar Bhatnagar, Steven Goldfarb, Jeremy Herr, Mitch McLachlan, Homer A....
Drake, Harold
2001-07-26
The Gordon Research Conference on Applied and Environmental Microbiology was held at Connecticut College, New London, Connecticut, July 22-27, 2001. The conference was attended by 121 participants. The attendees represented the spectrum of endeavor in this field, coming from academia, industry, and government laboratories, and included US and foreign scientists, senior researchers, young investigators, and students. Emphasis was placed on current unpublished research and discussion of the future target areas in this field. There was a conscious effort to stimulate discussion about the key issues in the field today. Session topics included the following: Environmental and applied genomics, Cell-to-cell signaling and multicellular behavior, Emerging technologies and methods, Novel metabolisms and ecosystems, Directed evolution of enzymes and pathways, Symbiotic and trophic relationships, Synthesis and application of novel biopolymers, and Microbes at the oxic-anoxic interface. There was also a special lecture titled ''Under the umbrella of the big tree: microbial biology into the 21st century.''
Phanerozoic black shales and the Wilson Cycle
Trabucho-Alexandre, J.; Hay, W. W.; de Boer, P. L.
2011-09-01
The spatial and temporal distribution of black shales is related to the development of the environments in which they accumulate and to a propitious combination of environmental variables. Whereas much has been done in recent years to improve our understanding of the mechanisms behind the temporal distribution of black shales in the Phanerozoic, the interpretation of the palaeogeographical distribution of black shales is still dominated by an oversimplistic set of three uniformitarian depositional models that do not capture the complexity and dynamics of environments of black shale accumulation. These three models, the restricted circulation, the (open) ocean oxygen minimum and the continental shelf models, are in fact a uniformitarian simplification of the variety of depositional environments that arise and coexist throughout the course of a basin's Wilson Cycle, i.e. the dynamic sequence of events and stages that characterise the evolution of an ocean basin, from the opening continental rift to the closing orogeny. We examine the spatial distribution of black shales in the context of the Wilson Cycle using examples from the Phanerozoic. It is shown that the geographical distribution of black shales, their position in the basin infill sequence and their nature (e.g. type of organic matter, lithology) depend on basin evolution because the latter controls the development of sedimentary environments where black shales may be deposited.
Precision Holography with Supersymmetric Wilson Loops
Faraggi, Alberto; Silva, Guillermo A; Trancanelli, Diego
2016-01-01
We consider certain 1/4 BPS Wilson loop operators in $SU(N)$ ${\\cal N}=4$ super Yang-Mills theory, whose expectation value can be computed exactly via supersymmetric localization. Holographically, these operators are mapped to fundamental strings in $AdS_5\\times S^5$. The string on-shell action reproduces the large $N$ and large coupling limit of the gauge theory expectation value and, according to the AdS/CFT correspondence, there should also be a precise match between subleading corrections to these limits. We perform a test of such match at next-to-leading order in string theory, by computing the 1-loop determinant of the quantum fluctuations around the classical string configuration. A source of ambiguity, related to ghost zero modes, is removed by comparing our operator with the 1/2 BPS circular Wilson loop. We find perfect agreement between the string theory result and the gauge theory prediction. This successful match, besides being a high precision test of the AdS/CFT correspondence, elucidates some o...
Toward precision holography with supersymmetric Wilson loops
Faraggi, Alberto; Pando Zayas, Leopoldo A.; Silva, Guillermo A.; Trancanelli, Diego
2016-04-01
We consider certain 1/4 BPS Wilson loop operators in SU( N) N=4 supersymmetric Yang-Mills theory, whose expectation value can be computed exactly via supersymmetric localization. Holographically, these operators are mapped to fundamental strings in AdS 5 × S 5. The string on-shell action reproduces the large N and large coupling limit of the gauge theory expectation value and, according to the AdS/CFT correspondence, there should also be a precise match between subleading corrections to these limits. We perform a test of such match at next-to-leading order in string theory, by deriving the spectrum of quantum fluctuations around the classical string solution and by computing the corresponding 1-loop effective action. We discuss in detail the supermultiplet structure of the fluctuations. To remove a possible source of ambiguity in the ghost zero mode measure, we compare the 1/4 BPS configuration with the 1/2 BPS one, dual to a circular Wilson loop. We find a discrepancy between the string theory result and the gauge theory prediction, confirming a previous result in the literature. We are able to track the modes from which this discrepancy originates, as well as the modes that by themselves would give the expected result.
Density-dependent mass gain by Wilson's Warblers during stopover
Jeffrey F. Kelly; Linda S. DeLay; Deborah M. Finch
2002-01-01
The need restore energetic reserves at stopover sites constrains avian migration ecology. To describe that constraint, we examined relationships among mass gained by Wilson's Warblers (Wilsonia pusilla) during stopover, abundance of Wilson's Warblers (i.e. capture rate), and arthropod abundance during autumn migration. We found that amount...
Woodrow Wilson: Prophet of Peace. Teaching with Historic Places.
Goehner, Thomas B.
This lesson describes President Woodrow Wilson's struggle with and his ultimate failure at achieving lasting world peace through the League of Nations. The lesson focuses on November 23, 1923, the eve of the fifth anniversary of the Armistice that concluded World War I, when a frail and ill Wilson was ready to deliver a commemorative address by…
Three lectures on free probability
2012-01-01
These are notes from a three-lecture mini-course on free probability given at MSRI in the Fall of 2010 and repeated a year later at Harvard. The lectures were aimed at mathematicians and mathematical physicists working in combinatorics, probability, and random matrix theory. The first lecture was a staged rediscovery of free independence from first principles, the second dealt with the additive calculus of free random variables, and the third focused on random matrix models.
Analysis of the human Atox 1 homologue in Wilson patients
Isabel Simon; Mark Schaefer; Jürgen Reichert; Wolfgang Stremmel
2008-01-01
AIM: To analyze the metallochaperone antioxidant-1 (Atoxl) gene sequence in Wilson disease patients.METHODS: Mutation analysis of the four exons of the Atoxl gene including the intron- exon boundaries was performed in 63 Wilson disease patients by direct sequencing.RESULTS: From 63 selected patients no mutations were identified after the entire coding region including the intron- exon boundaries of Atoxl were sequenced.One known polymorphism within the Atoxl gene (5'UTR-99 T>C) in 31 (49%) of the Wilson patients as well as one previously undescribed variation (5'UTR -68 C>T)in 2 of the Wilson patients could be detected. Statistical analyses revealed that the existence of a variation within the Atoxl- gene showed a tendency towards an earlier onset of the disease.CONCLUSION: Based on the data of this study, no major role can be attributed to Atoxl in the pathophysiology or clinical variation of Wilson disease.
Cusped light-like Wilson loops in gauge theories
Cherednikov, I O; Van der Veken, F F
2012-01-01
We propose and discuss a new approach to the analysis of the correlation functions which contain light-like Wilson lines or loops, the latter being cusped in addition. The objects of interest are therefore the light-like Wilson null-polygons, the soft factors of the parton distribution and fragmentation functions, high-energy scattering amplitudes in the eikonal approximation, gravitational Wilson lines, etc. Our method is based on a generalization of the universal quantum dynamical principle by J. Schwinger and allows one to take care of extra singularities emerging due to light-like or semi-light-like cusps. We show that such Wilson loops obey a differential equation which connects the area variations and renormalization group behavior of those objects and discuss the possible relation between geometrical structure of the loop space and area evolution of the light-like cusped Wilson loops.
BPS Wilson loops in Minkowski spacetime and Euclidean space
Ouyang, Hao; Wu, Jun-Bao; Zhang, Jia-ju
2015-12-01
We give evidence that spacelike BPS Wilson loops do not exist in Minkowski spacetime. We show that spacelike Wilson loops in Minkowski spacetime cannot preserve any supersymmetries, in d = 4 N = 4 super Yang-Mills theory, d = 3 N = 2 super Chern-Simons-matter theory, and d = 3 N = 6 Aharony-Bergman-Jafferis-Maldacena theory. We not only show this using infinite straight lines and circles as examples, but also we give proofs for general curves. We attribute this to the conflicts of the reality conditions of the spinors. However, spacelike Wilson loops do exist in Euclidean space. There are both BPS Wilson loops along infinite straight lines and circular BPS Wilson loops. This is because the reality conditions of the spinors are lost after Wick rotation. The result is reasonable in view of the AdS/CFT correspondence.
BPS Wilson loops in Minkowski spacetime and Euclidean space
Ouyang, Hao, E-mail: ouyangh@ihep.ac.cn; Wu, Jun-Bao, E-mail: wujb@ihep.ac.cn; Zhang, Jia-ju, E-mail: jjzhang@ihep.ac.cn [Theoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Rd, 100049, Beijing (China); Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, 19B Yuquan Rd, 100049, Beijing (China)
2015-12-21
We give evidence that spacelike BPS Wilson loops do not exist in Minkowski spacetime. We show that spacelike Wilson loops in Minkowski spacetime cannot preserve any supersymmetries, in d=4N=4 super Yang–Mills theory, d=3N=2 super Chern–Simons-matter theory, and d=3N=6 Aharony–Bergman–Jafferis–Maldacena theory. We not only show this using infinite straight lines and circles as examples, but also we give proofs for general curves. We attribute this to the conflicts of the reality conditions of the spinors. However, spacelike Wilson loops do exist in Euclidean space. There are both BPS Wilson loops along infinite straight lines and circular BPS Wilson loops. This is because the reality conditions of the spinors are lost after Wick rotation. The result is reasonable in view of the AdS/CFT correspondence.
BPS Wilson loops in Minkowski spacetime and Euclidean space
Ouyang, Hao; Wu, Jun-Bao; Zhang, Jia-ju [Chinese Academy of Sciences, Theoretical Physics Division, Institute of High Energy Physics, Beijing (China); Chinese Academy of Sciences, Theoretical Physics Center for Science Facilities, Beijing (China)
2015-12-15
We give evidence that spacelike BPS Wilson loops do not exist in Minkowski spacetime. We show that spacelikeWilson loops in Minkowski spacetime cannot preserve any supersymmetries, in d = 4 N = 4 super Yang-Mills theory, d = 3 N = 2 super Chern-Simons-matter theory, and d = 3 N = 6 Aharony-Bergman-Jafferis- Maldacena theory. We not only show this using infinite straight lines and circles as examples, but also we give proofs for general curves. We attribute this to the conflicts of the reality conditions of the spinors. However, spacelike Wilson loops do exist in Euclidean space. There are both BPS Wilson loops along infinite straight lines and circular BPS Wilson loops. This is because the reality conditions of the spinors are lost after Wick rotation. The result is reasonable in view of the AdS/CFT correspondence. (orig.)
Weak decays. [Lectures, phenomenology
Wojcicki, S.
1978-11-01
Lectures are given on weak decays from a phenomenological point of view, emphasizing new results and ideas and the relation of recent results to the new standard theoretical model. The general framework within which the weak decay is viewed and relevant fundamental questions, weak decays of noncharmed hadrons, decays of muons and the tau, and the decays of charmed particles are covered. Limitation is made to the discussion of those topics that either have received recent experimental attention or are relevant to the new physics. (JFP) 178 references
Larsen, Søren Ejling
This report contains the notes from my lectures on Micro scale meteorology at the Geophysics Department of the Niels Bohr Institute of Copenhagen University. In the period 1993-2012, I was responsible for this course at the University. At the start of the course, I decided that the text books...... available in meteorology at that time did not include enough of the special flavor of micro meteorology that characterized the work of the meteorology group at Risø (presently of the Institute of wind energy of the Danish Technical University). This work was focused on Boundary layer flows and turbulence...
Lectures on quantum chromodynamics
Smilga, Andrei
2001-01-01
Quantum chromodynamics is the fundamental theory of strong interactions. It is a physical theory describing Nature. Lectures on Quantum Chromodynamics concentrates, however, not on the phenomenological aspect of QCD; books with comprehensive coverage of phenomenological issues have been written. What the reader will find in this book is a profound discussion on the theoretical foundations of QCD with emphasis on the nonperturbative formulation of the theory: What is gauge symmetry on the classical and on the quantum level? What is the path integral in field theory? How to define the path integ
Das, Ashok
2013-01-01
These lecture notes on electromagnetism have evolved from graduate and undergraduate EM theory courses given by the author at the University of Rochester, with the basics presented with clarity and his characteristic attention to detail. The thirteen chapters cover, in logical sequence, topics ranging from electrostatics, magnetostatics and Maxwell's equations to plasmas and radiation. Boundary value problems are treated extensively, as are wave guides, electromagnetic interactions and fields. This second edition comprises many of the topics expanded with more details on the derivation of vari
Academic Training; Tel. 73127
2001-01-01
26, 27, 28, 29 and 30 March REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 Introduction to General Relativity and Black Holes T. Damour / IHES, Bures-sur-Yvette, F. Conceptual foundations of General Relativity (GR). Uniqueness of GR. Mathematical framework: tensor calculus, Riemannian geometry, connection, 'spin' connection, curvature, Cartan's form calculus. Hilbert-Einstein action, Einstein equations. Weak gravitational fields. Post Newtonian Approximation. Gravitanional Waves. Exact solutions. Killing vectors. Experimental tests. Black Holes: extensions of the Schwarzschild solution; Kerr-Newman holes; no-hair theorems; energtics of black holes; the membrane approach; quantum mechanics of black holes; Bekenstein entropy; Hawking temperature; black holes and string theory.
Green, Dan
1994-01-01
The aim of this book on particle physics is to present the theory in a simple way. The style and organization of the material is unique in that intuition is employed, not formal theory or the Monte Carlo method. This volume attempts to be more physical and less abstract than other texts without degenerating into a presentation of data without interpretation.This book is based on four courses of lectures conducted at Fermilab. It should prove very useful to advanced undergraduates and graduate students.
2009-10-26
In this podcast, William H. Foege, MD, MPH delivers the 29th Annual Joseph W. Mountin Lecture. Dr. Foege was a key leader in the smallpox effortÂ and worked as an epidemiologist in the successful eradication campaign in the 1970s. Dr. Foege became chief of the Smallpox Eradication Program at CDC, and was appointed director of CDC in 1977. Created: 10/26/2009 by Centers for Disease Control and Prevention (CDC). Date Released: 10/29/2009.
An intrinsic hyperboloid approach for Einstein Klein-Gordon equations
Wang, Qian
2016-01-01
In [7] Klainerman introduced the hyperboloidal method to prove the global existence results for nonlinear Klein-Gordon equations by using commuting vector fields. In this paper, we extend the hyperboloidal method from Minkowski space to Lorentzian spacetimes. This approach is developed in [14] for proving, under the maximal foliation gauge, the global nonlinear stability of Minkowski space for Einstein equations with massive scalar fields, which states that, the sufficiently small data in a compact domain, surrounded by a Schwarzschild metric, leads to a unique, globally hyperbolic, smooth and geodesically complete solution to the Einstein Klein-Gordon system. In this paper, we set up the geometric framework of the intrinsic hyperboloid approach in the curved spacetime. By performing a thorough geometric comparison between the radial normal vector field induced by the intrinsic hyperboloids and the canonical $\\p_r$, we manage to control the hyperboloids when they are close to their asymptote, which is a light...
Static Properties of the Multiple-Sine-Gordon Systems
Peyravi, M; Montakhab, Afshin
2010-01-01
In this paper, we examine some basic properties of the multiple-Sine-Gordon (MSG) systems, which constitute a generalization of the celebrated sine-Gordon (SG) system. We start by showing how MSG systems can be viewed as a general class of periodic functions. Next, periodic and step-like solutions of these systems are discussed in some details. In particular, we study the static properties of such systems by considering slope and phase diagrams. We also use concepts like energy density and pressure to characterize and distinguish such solutions. We interpret these solutions as an interacting many body system, in which kinks and antikinks behave as extended particles. Finally, we provide a linear stability analysis of periodic solutions which indicates short wavelength solutions to be stable.
Multiresonance modes in sine–Gordon brane models
Cruz, W.T., E-mail: wilamicruz@gmail.com [Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE), Campus Juazeiro do Norte, 63040-540 Juazeiro do Norte-Ceará (Brazil); Maluf, R.V., E-mail: r.v.maluf@fisica.ufc.br [Universidade Federal do Ceará (UFC), Departamento de Física, Campus do Pici, Fortaleza - CE, C.P. 6030, 60455-760 (Brazil); Dantas, D.M., E-mail: davi@fisica.ufc.br [Universidade Federal do Ceará (UFC), Departamento de Física, Campus do Pici, Fortaleza - CE, C.P. 6030, 60455-760 (Brazil); Almeida, C.A.S., E-mail: carlos@fisica.ufc.br [Universidade Federal do Ceará (UFC), Departamento de Física, Campus do Pici, Fortaleza - CE, C.P. 6030, 60455-760 (Brazil)
2016-12-15
In this work, we study the localization of the vector gauge field in two five-dimensional braneworlds generated by scalar fields coupled to gravity. The sine–Gordon like potentials are employed to produce different thick brane setups. A zero mode localized is obtained, and we show the existence of reverberations with the wave solutions indicating a quasi-localized massive mode. More interesting results are achieved when we propose a double sine–Gordon potential to the scalar field. The resulting thick brane shows a more detailed topology with the presence of an internal structure composed by two kinks. The massive spectrum of the gauge field is revalued on this scenario revealing the existence of various resonant modes. Furthermore, we compute the corrections to Coulomb law coming from these massive KK vector modes in these thick scenarios, which is concluded that the dilaton parameter regulates these corrections.
Multiresonance modes in sine-Gordon brane models
Cruz, W T; Almeida, C A S
2015-01-01
In this work, we study the localization of the vector gauge field in two five-dimensional braneworlds generated by scalar fields coupled to gravity. The sine-Gordon like potentials are employed to produce different thick brane setups. A zero mode localized is obtained, and we show the existence of reverberations with the wave solutions indicating a quasi-localized massive mode. More interesting results are achieved when we propose a double sine-Gordon potential to the scalar field. The resulting thick brane shows a more detailed topology with the presence of an internal structure composed by two kinks. The massive spectrum of the gauge field is revalued on this scenario revealing the existence of various resonant modes
Multiresonance modes in sine-Gordon brane models
Cruz, W. T.; Maluf, R. V.; Dantas, D. M.; Almeida, C. A. S.
2016-12-01
In this work, we study the localization of the vector gauge field in two five-dimensional braneworlds generated by scalar fields coupled to gravity. The sine-Gordon like potentials are employed to produce different thick brane setups. A zero mode localized is obtained, and we show the existence of reverberations with the wave solutions indicating a quasi-localized massive mode. More interesting results are achieved when we propose a double sine-Gordon potential to the scalar field. The resulting thick brane shows a more detailed topology with the presence of an internal structure composed by two kinks. The massive spectrum of the gauge field is revalued on this scenario revealing the existence of various resonant modes. Furthermore, we compute the corrections to Coulomb law coming from these massive KK vector modes in these thick scenarios, which is concluded that the dilaton parameter regulates these corrections.
2004 Atomic and Molecular Interactions Gordon Research Conference
Dr. Paul J. Dagdigian
2004-10-25
The 2004 Gordon Research Conference on Atomic and Molecular Interactions was held July 11-16 at Colby-Sawyer College, New London, New Hampshire. This latest edition in a long-standing conference series featured invited talks and contributed poster papers on dynamics and intermolecular interactions in a variety of environments, ranging from the gas phase through surfaces and condensed media. A total of 90 conferees participated in the conference.
The Quantum Sine-Gordon Model in Perturbative AQFT
Bahns, Dorothea; Rejzner, Kasia
2017-08-01
We study the Sine-Gordon model with Minkowski signature in the framework of perturbative algebraic quantum field theory. We calculate the vertex operator algebra braiding property. We prove that in the finite regime of the model, the expectation value—with respect to the vacuum or a Hadamard state—of the Epstein Glaser S-matrix and the interacting current or the field respectively converge, both given as formal power series.
Global solution for coupled nonlinear Klein-Gordon system
GAN Zai-hui; ZHANG Jian
2007-01-01
The global solution for a coupled nonlinear Klein-Gordon system in twodimensional space was studied.First,a sharp threshold of blowup and global existenoe for the system was obtained by constructing a type of cross-constrained variational problem and establishing so-called cross-invariant manifolds of the evolution flow.Then the result of how small the initial data for which the solution exists globally was proved by using the scaling argument.
Breather Dynamics of the Sine-Gordon Equation
Stephen Johnson; Anjan Biswas
2013-01-01
This paper studies the adiabatic dynamics of the breather soliton of the sine-Gordon equation.The integrals of motion are found and then used in soliton perturbation theory to derive the differential equation governing the soliton velocity.Time-dependent functions arise and their properties are studied.These functions are found to be bounded and periodic and affect the soliton velocity.The soliton velocity is numerically plotted against time for different combinations of initial velocities and perturbation terms.
Numerical Solution of Radial Biquaternion Klein-Gordon Equation
Christianto V.
2008-01-01
Full Text Available In the preceding article we argue that biquaternionic extension of Klein-Gordon equation has solution containing imaginary part, which differs appreciably from known solution of KGE. In the present article we present numerical/computer solution of radial biquaternionic KGE (radialBQKGE; which differs appreciably from conventional Yukawa potential. Further observation is of course recommended in order to refute or verify this proposition.
The Quantum Sine Gordon model in perturbative AQFT
Bahns, Dorothea
2016-01-01
We study the Sine Gordon model in the framework of perturbative algebraic quantum field theory, without making use of a representation on Fock space. In particular, we calculate the vertex operator algebra braiding property. We prove that in the finite regime of the model, the vacuum expectation value of the Epstein Glaser $S$-matrix and the interacting current, both given as formal power series, converge in a suitable topology on the space of functionals.
Moving potential for Dirac and Klein–Gordon equations
Hamil B; Chetouani L
2016-04-01
Using the Lorentz transformation, the Klein–Gordon and Dirac equations with moving potentials are reduced to one standard where the potential is time-independent. As application, the reflection and transmission coefficients are determined by considering the moving step with a constant velocity $v$. It has been found that $R \\pm T = 1$ only at $x = vt$. The problem of massless (2+1) Dirac particle is also considerered.
Forum: The Lecture and Student Learning. The Lecture's Absent Audience
Sciullo, Nick J.
2017-01-01
According to the "Oxford English Dictionary" ("OED"), the noun "lecture" dates from the 14th century and means the "action of reading, perusal. Also, that which is read or perused." This definition, while accurate and resonates today in many college classrooms, ignores a key feature of any lecture. The…
Wilson Dslash Kernel From Lattice QCD Optimization
Joo, Balint [Jefferson Lab, Newport News, VA; Smelyanskiy, Mikhail [Parallel Computing Lab, Intel Corporation, California, USA; Kalamkar, Dhiraj D. [Parallel Computing Lab, Intel Corporation, India; Vaidyanathan, Karthikeyan [Parallel Computing Lab, Intel Corporation, India
2015-07-01
Lattice Quantum Chromodynamics (LQCD) is a numerical technique used for calculations in Theoretical Nuclear and High Energy Physics. LQCD is traditionally one of the first applications ported to many new high performance computing architectures and indeed LQCD practitioners have been known to design and build custom LQCD computers. Lattice QCD kernels are frequently used as benchmarks (e.g. 168.wupwise in the SPEC suite) and are generally well understood, and as such are ideal to illustrate several optimization techniques. In this chapter we will detail our work in optimizing the Wilson-Dslash kernels for Intel Xeon Phi, however, as we will show the technique gives excellent performance on regular Xeon Architecture as well.
Global Wilson-Fisher fixed points
Jüttner, Andreas; Litim, Daniel F.; Marchais, Edouard
2017-08-01
The Wilson-Fisher fixed point with O (N) universality in three dimensions is studied using the renormalisation group. It is shown how a combination of analytical and numerical techniques determine global fixed points to leading order in the derivative expansion for real or purely imaginary fields with moderate numerical effort. Universal and non-universal quantities such as scaling exponents and mass ratios are computed, for all N, together with local fixed point coordinates, radii of convergence, and parameters which control the asymptotic behaviour of the effective action. We also explain when and why finite-N results do not converge pointwise towards the exact infinite-N limit. In the regime of purely imaginary fields, a new link between singularities of fixed point effective actions and singularities of their counterparts by Polchinski are established. Implications for other theories are indicated.
ABJM Wilson Loops in Arbitrary Representations
Hatsuda, Yasuyuki; Moriyama, Sanefumi; Okuyama, Kazumi
2013-01-01
We study vacuum expectation values (VEVs) of circular half BPS Wilson loops in arbitrary representations in ABJM theory. We find that those in hook representations are reduced to elementary integrations thanks to the Fermi gas formalism, which are accessible from the numerical studies similar to the partition function in the previous studies. For non-hook representations, we show that the VEVs in the grand canonical formalism can be exactly expressed as determinants of those in the hook representations. Using these facts, we can study the instanton effects of the VEVs in various representations. Our results are consistent with the worldsheet instanton effects studied from the topological string and a prescription to include the membrane instanton effects by shifting the chemical potential, which has been successful for the partition function.
Phenotypic convergence of Menkes and Wilson disease.
Bansagi, Boglarka; Lewis-Smith, David; Pal, Endre; Duff, Jennifer; Griffin, Helen; Pyle, Angela; Müller, Juliane S; Rudas, Gabor; Aranyi, Zsuzsanna; Lochmüller, Hanns; Chinnery, Patrick F; Horvath, Rita
2016-12-01
Menkes disease is an X-linked multisystem disorder with epilepsy, kinky hair, and neurodegeneration caused by mutations in the copper transporter ATP7A. Other ATP7A mutations have been linked to juvenile occipital horn syndrome and adult-onset hereditary motor neuropathy.(1,2) About 5%-10% of the patients present with "atypical Menkes disease" characterized by longer survival, cerebellar ataxia, and developmental delay.(2) The intracellular copper transport is regulated by 2 P type ATPase copper transporters ATP7A and ATP7B. These proteins are expressed in the trans-Golgi network that guides copper to intracellular compartments, and in copper excess, it relocates copper to the plasma membrane to pump it out from the cells.(3)ATP7B mutations cause Wilson disease with dystonia, ataxia, tremor, and abnormal copper accumulation in the brain, liver, and other organs.(4).
Wilson Fermions with Four Fermion Interactions
Rantaharju, Jarno; Hietanen, Ari; Pica, Claudio; Sannino, Francesco
2015-01-01
We present a lattice study of a four fermion theory, known as Nambu Jona-Lasinio (NJL) theory, via Wilson fermions. Four fermion interactions naturally occur in several extensions of the Standard Model as a low energy parameterisation of a more fundamental theory. In models of dynamical electroweak symmetry breaking these operators, at an effective level, are used to endow the Standard Model fermions with masses. Furthermore these operators, when sufficiently strong, can drastically modify the fundamental composite dynamics by, for example, turning a strongly coupled infrared conformal theory into a (near) conformal one with desirable features for model building. As first step, we study spontaneous chiral symmetry breaking for the lattice version of the NJL model.
ABJM Wilson loops in arbitrary representations
Hatsuda, Yasuyuki [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Theory Group; Tokyo Institute of Technology (Japan). Dept. of Physics; Honda, Masazumi [High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki (Japan); Moriyama, Sanefumi [Nagoya Univ. (Japan). Kobayashi Maskawa Inst. and Graduate School of Mathematics; Okuyama, Kazumi [Shinshu Univ., Matsumoto, Nagano (Japan). Dept. of Physics
2013-06-15
We study vacuum expectation values (VEVs) of circular half BPS Wilson loops in arbitrary representations in ABJM theory. We find that those in hook representations are reduced to elementary integrations thanks to the Fermi gas formalism, which are accessible from the numerical studies similar to the partition function in the previous studies. For non-hook representations, we show that the VEVs in the grand canonical formalism can be exactly expressed as determinants of those in the hook representations. Using these facts, we can study the instanton effects of the VEVs in various representations. Our results are consistent with the worldsheet instanton effects studied from the topological string and a prescription to include the membrane instanton effects by shifting the chemical potential, which has been successful for the partition function.
Loebbert, Florian
2016-08-01
In these introductory lectures we discuss the topic of Yangian symmetry from various perspectives. Forming the classical counterpart of the Yangian and an extension of ordinary Noether symmetries, first the concept of nonlocal charges in classical, two-dimensional field theory is reviewed. We then define the Yangian algebra following Drinfel’d's original motivation to construct solutions to the quantum Yang-Baxter equation. Different realizations of the Yangian and its mathematical role as a Hopf algebra and quantum group are discussed. We demonstrate how the Yangian algebra is implemented in quantum, two-dimensional field theories and how its generators are renormalized. Implications of Yangian symmetry on the two-dimensional scattering matrix are investigated. We furthermore consider the important case of discrete Yangian symmetry realized on integrable spin chains. Finally we give a brief introduction to Yangian symmetry in planar, four-dimensional super Yang-Mills theory and indicate its impact on the dilatation operator and tree-level scattering amplitudes. These lectures are illustrated by several examples, in particular the two-dimensional chiral Gross-Neveu model, the Heisenberg spin chain and { N }=4 superconformal Yang-Mills theory in four dimensions.
Basdevant, Jean-Louis
2007-01-01
Beautifully illustrated and engagingly written, Lectures on Quantum Mechanics presents theoretical physics with a breathtaking array of examples and anecdotes. Basdevant's style is clear and stimulating, in the manner of a brisk classroom lecture that students can follow with ease and enjoyment. Here is a sample of the book's style, from the opening of Chapter 1: "If one were to ask a passer-by to quote a great formula of physics, chances are that the answer would be 'E = mc2'. Nevertheless, the formula 'E=hV' which was written in the same year 1905 by the same Albert Einstein, and which started quantum theory, concerns their daily life considerably more. In fact, of the three watershed years for physics toward the beginning of the 20th century - 1905: the Special Relativity of Einstein, Lorentz and Poincaré; 1915: the General Relativity of Einstein, with its extraordinary reflections on gravitation, space and time; and 1925: the full development of Quantum Mechanics - it is surely the last which has the mos...
SUMMER STUDENT LECTURE PROGRAMME
Françoise Benz
2002-01-01
Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Monday 5 August 09:15-10:00 F. GIANOTTI LHC Physics (1/3) 10:15-12:00 T. NAKADA CP Violation (3&4/4) Tuesday 6 August 09:15-10:00 F. GIANOTTI LHC Physics (2/3) 10:15-11:00 R. JACOBSEN From Raw Data to Physics Results (1/3) 11:15-12:00 R. JACOBSEN / T. NAKADA Discussion Session Wednesday 7 August 09:15-10:00 F. GIANOTTI LHC Physics (3/3) 10:15-11:00 R. JACOBSEN From Raw Data to Physics Results (2/3) 11:15-12:00 J. LESGOURDES Cosmology (1/4) 14:00-16:00 C. BENVENUTI Basic Science, Society, and Technological Innovation (Council Chamber, bldg. 503) Thursday 8 August 09:15-10:00 J. LESGOURDES Cosmology (2/4) 10:15-11:00 R. JACOBSEN From Raw Data to Physics Results (3/3) 11:15-12:00 J. CARR / J. LESGOURDES Discussion Session Friday 9 August 09:15-11:00 J. LESGOURDES Cosmology (3&4/4) 11:15-12:00 C. JARLSKOG Historic Lecture 14:00-16:00 Course Review Monday 12 August 09:15-12:00 Students Sessi...
SUMMER STUDENT LECTURE PROGRAMME
Françoise Benz
2002-01-01
SUMMER STUDENT LECTURE PROGRAMME Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Monday 29 July 09:15 - 10:00 R. RATTAZZI Beyond the Standard Model (3/3) 10:15 - 11:00 P. WELLS Experimental test of the SM - LEP (3/3) 11:15 - 12:00 P. WELLS Discussion Session 14:00 - 16:00 R. ASSMANN The CLIC Concept for a Future Particle Collider at the Energy Frontier Tuesday 30 July 09:15 - 10:00 F. ANTINORI Heavy Ions (1/2) 10:15 - 12:00 F. DYDAK Neutrino Physics (1&2/4) Wednesday 31 July 09:15 - 10:00 F. ANTINORI Heavy Ions (2/2) 10:15 - 11:00 F. DYDAK Neutrino Physics (3/4) 11:15 - 12:00 F. DYDAK / F. ANTINORI Discussion Session Thursday 1 August 09:15 - 10:00 T. NAKADA CP Violation (1/4) 10:15 - 11:00 F. DYDAK Neutrino Physics (4/4) 11:15 - 12:00 F. BEDESCHI Experimental test of the SM Tevatron (1/2) Friday 2 August 09:15 - 10:00 T. NAKADA CP Violation (2/4) 10:15 ? 11:00 F. BEDESCHI Experimental test of the SM Tevatron (2/2) 11:15 ? 12:00 F. BEDESCHI / T. NAKADA Di...
Academic Training; Tel. 73127
2001-01-01
14, 15 and 16 May REGULAR LECTURE PROGRAMME 14, 15 May from 10:00 to 12:00 hrs - Main Auditorium bldg. 500 16 May from 11:00 to 12:00 hrs - Council Chamber, bldg 503 Modern Signal Processing: Wavelets vs. Fourier M. Vetterli / EPFL, Lausanne, CH and UC Berkeley Wavelets have established themselves as an important tool in modern signal processing as well as in applied mathematics. This is linked to several facts, among others: i. New theoretical advances have been achieved, like new forms of 4 time-frequency bases for signal analysis. ii. Efficient computational algorithms are available. iii. Many applications either used similar ideas, like for example the concept of multiresolution, or took advantage of the unified framework provided by wavelets. This combination of elegant theory, efficient algorithms, and successful applications makes the field of wavelets and signal processing quite exciting. It is the purpose of these lectures to establish the theory necessary to understand wavelets and related construct...
Academic Training; Tel. 73127
2001-01-01
14, 15 and 16 May REGULAR LECTURE PROGRAMME 14, 15 May from 10:00 to 12:00 hrs - Main Auditorium bldg. 500 16 May from 11:00 to 12:00 hrs - Council Chamber, bldg 503 Modern Signal Processing: Wavelets vs. Fourier M. Vetterli / EPFL, Lausanne, CH and UC Berkeley Wavelets have established themselves as an important tool in modern signal processing as well as in applied mathematics. This is linked to several facts, among others: New theoretical advances have been achieved, like new forms of 4 time-frequency bases for signal analysis. Efficient computational algorithms are available. Many applications either used similar ideas, like for example the concept of multiresolution, or took advantage of the unified framework provided by wavelets. This combination of elegant theory, efficient algorithms, and successful applications makes the field of wavelets and signal processing quite exciting. It is the purpose of these lectures to establish the theory necessary to understand wavelets and related constructions. A...
Wilson-Cowan Equations for Neocortical Dynamics.
Cowan, Jack D; Neuman, Jeremy; van Drongelen, Wim
2016-12-01
In 1972-1973 Wilson and Cowan introduced a mathematical model of the population dynamics of synaptically coupled excitatory and inhibitory neurons in the neocortex. The model dealt only with the mean numbers of activated and quiescent excitatory and inhibitory neurons, and said nothing about fluctuations and correlations of such activity. However, in 1997 Ohira and Cowan, and then in 2007-2009 Buice and Cowan introduced Markov models of such activity that included fluctuation and correlation effects. Here we show how both models can be used to provide a quantitative account of the population dynamics of neocortical activity.We first describe how the Markov models account for many recent measurements of the resting or spontaneous activity of the neocortex. In particular we show that the power spectrum of large-scale neocortical activity has a Brownian motion baseline, and that the statistical structure of the random bursts of spiking activity found near the resting state indicates that such a state can be represented as a percolation process on a random graph, called directed percolation.Other data indicate that resting cortex exhibits pair correlations between neighboring populations of cells, the amplitudes of which decay slowly with distance, whereas stimulated cortex exhibits pair correlations which decay rapidly with distance. Here we show how the Markov model can account for the behavior of the pair correlations.Finally we show how the 1972-1973 Wilson-Cowan equations can account for recent data which indicates that there are at least two distinct modes of cortical responses to stimuli. In mode 1 a low intensity stimulus triggers a wave that propagates at a velocity of about 0.3 m/s, with an amplitude that decays exponentially. In mode 2 a high intensity stimulus triggers a larger response that remains local and does not propagate to neighboring regions.
Study of models of the sine-Gordon type in flat and curved spacetime
Bazeia, D. [Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo, SP (Brazil); Universidade Federal da Paraiba, Departamento de Fisica, Joao Pessoa, PB (Brazil); Universidade Federal de Campina Grande, Departamento de Fisica, Campina Grande, PB (Brazil); Losano, L. [Universidade Federal da Paraiba, Departamento de Fisica, Joao Pessoa, PB (Brazil); Universidade Federal de Campina Grande, Departamento de Fisica, Campina Grande, PB (Brazil); Menezes, R. [Universidade Federal de Campina Grande, Departamento de Fisica, Campina Grande, PB (Brazil); Rocha, Roldao da [Universidade Federal do ABC, Centro de Matematica, Computacao e Cognicao, Santo Andre, SP (Brazil)
2013-07-15
We study a new family of models of the sine-Gordon type, starting from the sine-Gordon model, including the double sine-Gordon, the triple one, and so on. The models appears as deformations of the starting model, with the deformation controlled by two parameters, one very small, used to control a linear expansion on it, and the other, which specifies the particular model in the family of models. We investigate the presence of topological defects, showing how the solutions can be constructed explicitly from the topological defects of the sine-Gordon model itself. In particular, we delve into the double sine-Gordon model in a braneworld scenario with a single extra dimension of infinite extent, showing that a stable gravity scenario is admissible. Also, we briefly show that the deformation procedure can be used iteratively, leading to a diversity of possibilities to construct families of models of the sine-Gordon type. (orig.)
Surviving Lecture: A Pedagogical Alternative
Berry, Whitney
2008-01-01
Lecture is the approach traditionally used to teach music theory courses. Although efficient in the delivery of large amounts of information in a short period of time, lecture lacks the effectiveness of an active learning approach. "Theory Survivor" is a unique cooperative-learning method based on the Student Teams-Achievement Divisions technique…
Victoria Reyzabal, Maria
2015-01-01
La lecture à voix haute apparaît comme une technique pour la compréhension active des textes, elle ajoute d’autres possibilités de compréhension à la lecture silencieuse et peut préparer à des pratiques créatives et des productions personnelles.
PERBANDINGAN TEORI PERILAKU PENCARIAN INFORMASI MENURUT ELLIS, WILSON DAN KUHLTHAU
Widiyastuti Widiyastuti
2016-10-01
Full Text Available AbstrakSetiap pemustaka memiliki perilaku pencarian informasi yang berbeda sesuai dengan kebutuhannya. Perilaku pencarian informasi mengacu kepada bagaimana seseorang mencari dan meramu suatu informasi yang diperolehnya. Setidaknya terdapat tiga teori perilaku pencarian informasi, yaitu teori-teori yang dikemukakan oleh Ellis, Wilson dan Kuhlthau. Ketiga tokoh tersebut mencetuskan teori yang dapat digunakan untuk mengkaji perilaku pencarian informasi pemustaka. Tulisan ini bertujuan untuk membandingkan ketia teori tersebut. Hasil analisa menunjukkan bahwa terdapat enam perbedaan dari teori Ellis, Wilson dan Kuhlthau dan satu kesamaan antara teori Ellis dan Wilson, tetapi masih terbuka kemungkinan ditemukan perbedaan lainnya.Kata Kunci: Pencarian Informasi, Ellis, Wilson, Kuhlthau.AbstractEllis, Wilson and Kuhlthau are figures in information study who propose their theories about information seeking behavior. Their theories are applied as a guide in doing study regards users in library. Users studies is needed to know users’ characteristics so that library management would arrange suitable collection and provide suitable facility for the users. Information seeking theory according to Ellis, Wilson and Kuhlthau are different but connected. There are six differences between those theories but one similarity nonetheles there is possibility of other differences among their theories. Keywords: Information Seeking, Ellis, Wilson, Kuhlthau
Molecular studies of ceruloplasmin deficiency in Wilson's disease.
Czaja, M J; Weiner, F R; Schwarzenberg, S J; Sternlieb, I; Scheinberg, I H; Van Thiel, D H; LaRusso, N F; Giambrone, M A; Kirschner, R; Koschinsky, M L
1987-10-01
Deficiency of serum ceruloplasmin is a characteristic biochemical abnormality of Wilson's disease, although the mechanism of this finding is unknown. Ceruloplasmin messenger RNA (mRNA) levels were therefore examined in five patients with Wilson's disease and five controls with other types of hepatic disease. Northern and dot blot hybridizations showed that detectable ceruloplasmin mRNA was present in all of the patients with Wilson's disease, including one patient with no detectable serum ceruloplasmin. However, the ceruloplasmin mRNA levels in the Wilson's disease patients were only 33% that of controls (P less than 0.001). In contrast, albumin mRNA levels in the Wilson's disease patients averaged 161% that of controls. In an attempt to better delineate the level of gene expression responsible for this decrease in ceruloplasmin mRNA, the nuclear run-on assay was used to analyze transcriptional rates. The amount of ceruloplasmin gene transcription in four Wilson's patients was decreased to 44% that of three controls. These results indicate that the diminished serum ceruloplasmin levels in patients with Wilson's disease are due at least in part to a decrease in ceruloplasmin gene transcription.
New modular relations involving cubes of the Göllnitz–Gordon functions
OLIVIA X M YAO
2017-06-01
Chen and Huang established some elegant modular relations for the Göllnitz–Gordon functions analogous to Ramanujan’s list of forty identities for the Rogers–Ramanujan functions. In this paper, we derive some new modular relations involving cubes of the Göllnitz–Gordon functions. Furthermore, we also provide newproofs of some modular relations for the Göllnitz–Gordon functions due to Gugg.
On the Klein-Gordon oscillator subject to a Coulomb-type potential
Bakke, K.; Furtado, C.
2015-04-01
By introducing the scalar potential as modification in the mass term of the Klein-Gordon equation, the influence of a Coulomb-type potential on the Klein-Gordon oscillator is investigated. Relativistic bound states solutions are achieved to both attractive and repulsive Coulomb-type potentials and the arising of a quantum effect characterized by the dependence of angular frequency of the Klein-Gordon oscillator on the quantum numbers of the system is shown.
Higher-order symmetries and conservation laws of multi-dimensional Gordon-type equations
S Jamal; A H Kara
2011-09-01
In this paper a class of multi-dimensional Gordon-type equations are analysed using a multiplier and homotopy approach to construct conservation laws. The main focus is the analysis of the classical versions of the Gordon-type equations and obtaining higher-order variational symmetries and corresponding conserved quantities. The results are extended to the multi-dimensional Gordontype equations with the two-dimensional Klein–Gordon equation in particular yielding interesting results.
The symmetries and conservation laws of some Gordon-type equations in Milne space-time
S Jamal; A H Kara; A H Bokhari; F D Zaman
2013-05-01
In this letter, the Lie point symmetries of a class of Gordon-type wave equations that arise in the Milne space-time are presented and analysed. Using the Lie point symmetries, it is showed how to reduce Gordon-type wave equations using the method of invariants, and to obtain exact solutions corresponding to some boundary values. The Noether point symmetries and conservation laws are obtained for the Klein–Gordon equation in one case. Finally, the existence of higher-order variational symmetries of a projection of the Klein–Gordon equation is investigated using the multiplier approach.
Lecture Notes: Approximate Molecular Orbital Theory
Spanget-Larsen, Jens
2015-01-01
Lecture Notes for the introductory course "Quantum Chemistry & Spectroscopy" (Dept. Science, Roskilde University)......Lecture Notes for the introductory course "Quantum Chemistry & Spectroscopy" (Dept. Science, Roskilde University)...
QCD Factorization, Wilson Loop Space and Unintegrated Gluon Distributions
Cherednikov, Igor O.
2017-03-01
Currently available operator definitions of gauge-invariant unintegrated (transverse momentum dependent) gluon density function available are briefly overviewed, with emphasis on the structure of the associated Wilson lines. A gauge-invariant generating function with maximal path-dependence is proposed, which, as distinct from the common methodology, is based on arbitrary Wilson loops with no reference to any factorization scheme. After the local area differentiation defined in the Wilson loop space, this object can be used to define fully unintegrated gluon distribution functions in a way potentially suitable for the lattice simulations.
Plehn, Tilman
2015-01-01
With the discovery of the Higgs boson, the LHC experiments have closed the most important gap in our understanding of fundamental interactions, confirming that such interactions between elementary particles can be described by quantum field theory, more specifically by a renormalizable gauge theory. This theory is a priori valid for arbitrarily high energy scales and does not require an ultraviolet completion. Yet, when trying to apply the concrete knowledge of quantum field theory to actual LHC physics - in particular to the Higgs sector and certain regimes of QCD - one inevitably encounters an intricate maze of phenomenological know-how, common lore and other, often historically developed intuitions about what works and what doesn’t. These lectures cover three aspects to help understand LHC results in the Higgs sector and in searches for physics beyond the Standard Model: they discuss the many facets of Higgs physics, which is at the core of this significantly expanded second edition; then QCD, to the deg...
Baumann, Daniel
2009-01-01
In a series of five lectures I review inflationary cosmology. I begin with a description of the initial conditions problems of the Friedmann-Robertson-Walker (FRW) cosmology and then explain how inflation, an early period of accelerated expansion, solves these problems. Next, I describe how inflation transforms microscopic quantum fluctuations into macroscopic seeds for cosmological structure formation. I present in full detail the famous calculation for the primordial spectra of scalar and tensor fluctuations. I then define the inverse problem of extracting information on the inflationary era from observations of cosmic microwave background fluctuations. The current observational evidence for inflation and opportunities for future tests of inflation are discussed. Finally, I review the challenge of relating inflation to fundamental physics by giving an account of inflation in string theory.
Loebbert, Florian
2016-01-01
In these introductory lectures we discuss the topic of Yangian symmetry from various perspectives. Forming the classical counterpart of the Yangian and an extension of ordinary Noether symmetries, first the concept of nonlocal charges in classical, two-dimensional field theory is reviewed. We then define the Yangian algebra following Drinfeld's original motivation to construct solutions to the quantum Yang-Baxter equation. Different realizations of the Yangian and its mathematical role as a Hopf algebra and quantum group are discussed. We demonstrate how the Yangian algebra is implemented in quantum, two-dimensional field theories and how its generators are renormalized. Implications of Yangian symmetry on the two-dimensional scattering matrix are investigated. We furthermore consider the important case of discrete Yangian symmetry realized on integrable spin chains. Finally we give a brief introduction to Yangian symmetry in planar, four-dimensional super Yang-Mills theory and indicate its impact on the dila...
Runde, Volker
2002-01-01
The notion of amenability has its origins in the beginnings of modern measure theory: Does a finitely additive set function exist which is invariant under a certain group action? Since the 1940s, amenability has become an important concept in abstract harmonic analysis (or rather, more generally, in the theory of semitopological semigroups). In 1972, B.E. Johnson showed that the amenability of a locally compact group G can be characterized in terms of the Hochschild cohomology of its group algebra L^1(G): this initiated the theory of amenable Banach algebras. Since then, amenability has penetrated other branches of mathematics, such as von Neumann algebras, operator spaces, and even differential geometry. Lectures on Amenability introduces second year graduate students to this fascinating area of modern mathematics and leads them to a level from where they can go on to read original papers on the subject. Numerous exercises are interspersed in the text.
Academic Training; Tel. 73127
2001-01-01
8, 9, 10, 11 and 12 October LECTURES FOR POSTGRADUATE STUDENTS From 10:00 hrs - Main Auditorium bldg. 500 Introduction to Field Theory R. Kleiss / University of Nijmegen, NL Starting from the notion of path integrals as developed by Feynman, we discuss field theory in zero spacetime dimensions. The concepts of perturbation expansions, connected amplitudes, Feynman diagrams, classical solutions, renormalization and the effective action are developed. The model is extended to four spacetime dimensions, and the full Feynman rules for relativisitc scalar theory derived. The S matrix and the concept of unitarity are discussed, leading to the amputation rules for S matrix elements from considerations of unitarity. The rules are extended to include particles with spin-1/2 and spin-1. The high-energy behaviour of the theory is discussed as a method to derive the gauge symmetry of the various models.
Academic Training; Tel. 73127
2001-01-01
11, 12, 13, 14 and 15 June REGULAR LECTURE PROGRAMME From 11:00 hrs - Main Auditorium bldg. 500 What have we learned from LEP J. Ellis / CERN-TH The basic formalism of the Standard Model will be reviewed, and the limited state of our knowledge before the start-up of LEP will be recalled. Neutrino counting at LEP will be compared with astrophysical and cosmological constraints. The interpretation of precision electroweak data will be discussed, including their predictions for the top quark and the Higgs boson, and the hints they offer for the future direction beyond the Standard Model: probably a weakly-interacting theory that may be extrapolated up to a grand unification scale. Topics in QCD and heavy-flavour physics will be discussed briefly, and topics in W physics at greater length. Direct LEP searches for the Higgs boson and supersymmetric particles will be discussed, and the prospects for their discoveries at future accelerators will be previewed.
Dennis, Brian R.
2006-01-01
This lecture will cover solar thermal radiation, particularly as it relates to the high energy solar processes that are the subject of this summer school. After a general review of thermal radiation from the Sun and a discussion of basic definitions, the various emission and absorption mechanisms will be described including black-body emission, bremsstrahlung, free-bound, and atomic line emissions of all kinds. The bulk of the time will be spent discussing the observational characteristics of thermal flare plasma and what can be learned about the flare energy release process from observations of the thermal radiation at all wavelengths. Information that has been learned about the morphology, temperature distribution, and composition of the flare plasma will be presented. The energetics of the thermal flare plasma will be discussed in relation to the nonthermal energy of the particles accelerated during the flare. This includes the total energy, the radiated and conductive cooling processes, and the total irradiated energy.
Lectures on algebraic statistics
Drton, Mathias; Sullivant, Seth
2009-01-01
How does an algebraic geometer studying secant varieties further the understanding of hypothesis tests in statistics? Why would a statistician working on factor analysis raise open problems about determinantal varieties? Connections of this type are at the heart of the new field of "algebraic statistics". In this field, mathematicians and statisticians come together to solve statistical inference problems using concepts from algebraic geometry as well as related computational and combinatorial techniques. The goal of these lectures is to introduce newcomers from the different camps to algebraic statistics. The introduction will be centered around the following three observations: many important statistical models correspond to algebraic or semi-algebraic sets of parameters; the geometry of these parameter spaces determines the behaviour of widely used statistical inference procedures; computational algebraic geometry can be used to study parameter spaces and other features of statistical models.
Academic Training; Tel. 73127
2001-01-01
21, 22, 23 November LECTURES FOR POSTGRADUATE STUDENTS From 11:00 hrs - Council Chamber bldg. 503 on 21 November Auditorium, bldg 500 on 22, 23 November Introduction to symmetry breaking phenomena in physics E. Brezin / ENS, Paris, F. The notion of broken symmetries started slowly to emerge in the 19th century. The early studies of Pasteur on the parity asymmetry of life, the studies of Curie on piezoelectricity and on the symmetries of effects versus the symmetry of causes (which clearly excluded spontaneous symmetry breaking), are important historical landmarks. However the possibility of spontaneous symmetry breaking within the usual principles of statistical mechanics, waited for the work of Peierls and Onsager. The whole theory of phase transitions and critical phenomena, as well as the construction of field theoretic models as long distance limit of yet unknown physics, relies nowadays on the concept of criticality associated to spontaneous symmetry breaking. The phenomena of Goldstone bosons, of Meissn...
Academic Training; Tel. 73127
2001-01-01
19, 20, 21, 22 and 23 February REGULAR LECTURE PROGRAMME From 11:00 hrs - 19, 20 and 21 February Main Auditorium bldg. 500, 22 and 23 February Council Chamber, bldg 503 Introduction to Cryogenic Engineering J.G. Weisend / SLAC, Stanford, USA Cryogenic engineering is an important speciality at CERN. With the construction of LHC, this technology will have an even greater impact on machine operations. The goal of the course is to give people not working in cryogenics an appreciation of the basic principals and problems associated with the field. The course will also provide a foundation for future learning in cryogenics. Topics to be covered will include: properties of cryogenic fluids and materials, refrigeration, cryostat design, instrumentation, safety and propertiesof He II. Examples of working cryogenic systems, many of them from high energy physics, will be presented.
Guichaoua, Mickaël
2016-01-01
La grande stratégie de l’Empire romain d’Edward Luttwak, qui fut conseiller militaire du président Reagan, parut pour la première fois en 1974 mais ne fut éditée en français qu’en 1989. Cet ouvrage connaît toujours un grand succès dans les milieux universitaires et particulièrement chez les étudiants. Cette lecture entre dans le cadre de nos préoccupations sur le dialogue militaire entre Anciens et Modernes, sinon les contemporains. En effet, Luttwak explique, dans son introduction, qu’« il ...
Academic Training; Tel. 73127
2001-01-01
8, 9, 10, 11 and 12 October LECTURES FOR POSTGRADUATE STUDENTS From 10:00 hrs - Main Auditorium bldg. 500 Introduction to Field Theory R. Kleiss / University of Nijmegen, NL Starting from the notion of path integrals as developed by Feynman, we discuss field theory in zero spacetime dimensions. The concepts of perturbation expansions, connected amplitudes, Feynman diagrams, classical solutions, renormalization and the effective action are developed. The model is extended to four spacetime dimensions, and the full Feynman rules for relativisitc scalar theory derived. The S matrix and the concept of unitarity are discussed, leading to the amputation rules for S matrix elements from considerations of unitarity. The rules are extended to include particles with spin-1/2 and spin-1. The high-energy behaviour of the theory is discussed as a method to derive the gauge symmetry of the various models.
Woyczyński, Wojbor A
1998-01-01
These lecture notes are woven around the subject of Burgers' turbulence/KPZ model of interface growth, a study of the nonlinear parabolic equation with random initial data. The analysis is conducted mostly in the space-time domain, with less attention paid to the frequency-domain picture. However, the bibliography contains a more complete information about other directions in the field which over the last decade enjoyed a vigorous expansion. The notes are addressed to a diverse audience, including mathematicians, statisticians, physicists, fluid dynamicists and engineers, and contain both rigorous and heuristic arguments. Because of the multidisciplinary audience, the notes also include a concise exposition of some classical topics in probability theory, such as Brownian motion, Wiener polynomial chaos, etc.
Accuracy analysis of wilson-θ method with modified acceleration%加速度修正的Wilson-θ法的精度分析
方德平; 王全凤
2010-01-01
Wilson-θ法分为加速度未经过和经过t+△t时刻动力平衡方程修正的Wilson-θ①法和Wilson-θ②法.Wilson-θ①法是无条件稳定的,而Wilson-θ②法不再是无条件稳定的.计算精度分析表明:Wilson-θ②法对计算精度的提高不明显;其稳定的范围和计算精度均小于线性加速度法,不宜采用.
Novel BPS Wilson loops in three-dimensional quiver Chern-Simons-matter theories
Ouyang, Hao; Wu, Jun-Bao; Zhang, Jia-ju
2016-02-01
We show that generic three-dimensional N = 2 quiver super Chern-Simons-matter theories admit Bogomol'nyi-Prasad-Sommerfield (BPS) Drukker-Trancanelli (DT) type Wilson loops. We investigate both Wilson loops along timelike infinite straight lines in Minkowski spacetime and circular Wilson loops in Euclidean space. In Aharnoy-Bergman-Jafferis-Maldacena theory, we find that generic BPS DT type Wilson loops preserve the same number of supersymmetries as Gaiotto-Yin type Wilson loops. There are several free parameters for generic BPS DT type Wilson loops in the construction, and supersymmetry enhancement for Wilson loops happens for special values of the parameters.
Novel BPS Wilson loops in three-dimensional quiver Chern–Simons-matter theories
Hao Ouyang
2016-02-01
Full Text Available We show that generic three-dimensional N=2 quiver super Chern–Simons-matter theories admit Bogomol'nyi–Prasad–Sommerfield (BPS Drukker–Trancanelli (DT type Wilson loops. We investigate both Wilson loops along timelike infinite straight lines in Minkowski spacetime and circular Wilson loops in Euclidean space. In Aharnoy–Bergman–Jafferis–Maldacena theory, we find that generic BPS DT type Wilson loops preserve the same number of supersymmetries as Gaiotto–Yin type Wilson loops. There are several free parameters for generic BPS DT type Wilson loops in the construction, and supersymmetry enhancement for Wilson loops happens for special values of the parameters.
A note on multiply wound BPS Wilson loops in ABJM
Bianchi, Marco S
2016-01-01
We consider BPS Wilson loops in planar ABJM theory, wound multiple times around the great circle. We compute the expectation value of the 1/6-BPS and 1/2-BPS Wilson loops to three- and two-loop order in perturbation theory, respectively, dealing with the combinatorics of multiple winding via recursive relations. For the 1/6-BPS Wilson loop we perform the computation at generic framing and at framing 1 we find agreement with the localization result. For the 1/2-BPS Wilson loop we compute the expectation value at trivial framing and by comparison with the matrix model expression we extract the framing dependence of the fermion diagrams.
Copper removal strategies for Wilson's disease crisis in the ICU.
Reynolds, H V; Talekar, C R; Bellapart, J; Leggett, B A; Boots, R J
2014-03-01
Wilson's disease is a rare, inherited, autosomal recessive disorder of copper metabolism which leads to an accumulation of copper in body tissues. If a patient develops a Wilson's crisis, mortality can approach 100%. The treatment of such patients is mostly organ support but a possible treatment goal is to try to rapidly remove copper from their system. We performed a literature search on methods for de-coppering strategies for patients in intensive care with known Wilson's disease. We found 11 case reports where therapeutic plasma exchange was used and six case reports where various forms of albumin dialysis were used as techniques for rapidly reducing serum copper levels. To date, the case reports are encouraging that therapeutic plasma exchange and albumin dialysis can either delay or prevent the need for liver transplantation in patients with fulminant hepatic failure due to Wilson's disease. However, these case reports are mainly in the paediatric or young adult population, thus further studies in adults are warranted.
Ten-Year Study of a Wilson's Disease Dysarthric.
Day, Linda Susan; Parnell, Martha M.
1987-01-01
The 10-year longitudinal case study describes the history, speech therapy program, and treatment results for an adult male with Wilson's disease, a genetically based metabolic progressive neurological disorder which includes severe speech problems. (DB)
Pyoderma Gangrenosum-A New Manifestation of Wilson Disease?
Freg, George Naiem Ibrahiem; Shah, Venisha; Nagral, Aabha; Jhaveri, Ajay
2016-03-01
Seventeen year old girl, a known case of Wilson disease presented to us with a non-healing skin ulcer followed by appearance of jaundice, ascites and progressive fatigue of 1 month duration. She was diagnosed to have Wilson disease 5 years back and had been well controlled on d-penicillamine. On enquiry, she was found to be noncompliant with her medication in the preceding 6 months. On examination, she had severe pallor, icterus with moderate ascites and oedema feet. Investigations revealed severe haemolytic anemia and deranged liver function. The lesion was diagnosed to be pyoderma gangrenosum on skin biopsy. The appearance of a cutaneous lesion followed by deterioration in the liver disease and hemolysis suggested uncontrolled Wilson disease as the triggering factor. Chelation therapy improved her haemoglobin and liver function as well as led to healing of the ulcer. We describe pyoderma gangrenosum as a new manifestation of Wilson disease.
A note on multiply wound BPS Wilson loops in ABJM
Bianchi, Marco S.
2016-09-01
We consider BPS Wilson loops in planar ABJM theory, wound multiple times around the great circle. We compute the expectation value of the 1/6-BPS and 1/2-BPS Wilson loops to three- and two-loop order in perturbation theory, respectively, dealing with the combinatorics of multiple winding via recursive relations. For the 1/6-BPS Wilson loop we perform the computation at generic framing and at framing 1 we find agreement with the localization result. For the 1/2-BPS Wilson loop we compute the expectation value at trivial framing and by comparison with the matrix model expression we extract the framing dependence of the fermion diagrams.
Minn fuq l-ixkaffa : program 3 : Jacqueline Wilson
Grech, Sergio
2006-01-01
Sergio Grech together with author Trevor Zahra, look into the works of 17 famous world renowned authors, such as Charles Dickens, Paolo Coelho, Ha Jin, Jacqueline Wilson, William Shakespeare, Philip Pullman, Kundera and Kazuo Ishiguro just to mention a few.
A new approach to piecewise linear Wilson lines
Van der Veken, Frederik F
2014-01-01
Wilson lines are key objects in many QCD calculations. They are parallel transporters of the gauge field that can be used to render non-local operator products gauge invariant, which is especially useful for calculations concerning validation of factorization schemes and in calculations for constructing or modelling parton density functions. We develop an algorithm to express Wilson lines that are defined on piecewise linear paths in function of their Wilson segments, reducing the number of diagrams needed to be calculated. We show how different linear path topologies can be related using their color structure. This framework allows one to easily switch results between different Wilson line structures, which is helpful when testing different structures against each other, e.g. when checking universality properties of non-perturbative objects.
Exact results for Wilson loops in orbifold ABJM theory
Ouyang, Hao; Wu, Jun-Bao; Zhang, Jia-Ju
2016-08-01
We investigate the exact results for circular 1/4 and 1/2 BPS Wilson loops in the d = 3 mathcal = 4 super Chern-Simons-matter theory that could be obtained by orbifolding Aharony-Bergman-Jafferis-Maldacena (ABJM) theory. The partition function of the mathcal = 4 orbifold ABJM theory has been computed previously in the literature. In this paper, we re-derive it using a slightly different method. We calculate the vacuum expectation values of the circular 1/4 BPS Wilson loops in fundamental representation and of circular 1/2 BPS Wilson loops in arbitrary representations. We use both the saddle point approach and Fermi gas approach. The results for Wilson loops are in accord with the available gravity results. Supported by NSFC (11222549, 11575202), K. C. Wong Education Foundation and Youth Innovation Promotion Association of CAS (2011016)
The Oskar Klein Memorial Lectures
1991-01-01
The Oskar Klein Memorial Lectures, instituted in 1988 and supported by the Royal Swedish Academy of Sciences through its Nobel Committee for Physics, are given at Stockholm University in Sweden, where Oskar Klein was professor in Theoretical Physics 1930-1962.Volume 1 contains the 1988 lectures on "Symmetry and Physics" and "From the Bethe-Hulthén Hypothesis to the Yang-Baxter Equation," given by C N Yang, Nobel Prize winner (1957) and professor at the State University of New York at Stony Brook. The 1989 lectures on "Beyond the Standard Models," referring to models for cosmology and elementar
Universal properties of Wilson loop operators in large N QCD
Narayanan, R
2008-01-01
Eigenvalues of a Wilson loop operator are gauge invariant and their distribution undergoes a transition at infinite N as the size of the loop is changed. We study this transition using the average characteristic polynomial associated with the Wilson loop operator. We derive the scaling function in a certain double scaling limit for two dimensional QCD and hypothesize that the transition in three and four dimensional QCD are in the same universality class. Numerical evidence for this hypothesisis provided in three dimensions
Morita Duality and Noncommutative Wilson Loops in Two Dimensions
Cirafici, M; Seminara, D; Szabó, R J; Cirafici, Michele; Griguolo, Luca; Seminara, Domenico; Szabo, Richard J.
2005-01-01
We describe a combinatorial approach to the analysis of the shape and orientation dependence of Wilson loop observables on two-dimensional noncommutative tori. Morita equivalence is used to map the computation of loop correlators onto the combinatorics of non-planar graphs. Several nonperturbative examples of symmetry breaking under area-preserving diffeomorphisms are thereby presented. Analytic expressions for correlators of Wilson loops with infinite winding number are also derived and shown to agree with results from ordinary Yang-Mills theory.
Calculating osmotic pressure according to nonelectrolyte Wilson nonrandom factor model.
Li, Hui; Zhan, Tingting; Zhan, Xiancheng; Wang, Xiaolan; Tan, Xiaoying; Guo, Yiping; Li, Chengrong
2014-08-01
Abstract The osmotic pressure of NaCl solutions was determined by the air humidity in equilibrium (AHE) method. The relationship between the osmotic pressure and the concentration was explored theoretically, and the osmotic pressure was calculated according to the nonelectrolyte Wilson nonrandom factor (N-Wilson-NRF) model from the concentration. The results indicate that the calculated osmotic pressure is comparable to the measured one.
To Lecture or Not to Lecture? That is the Question.
Oja, Kenneth John; Kelly, Lesly
2016-01-01
A quasi-experimental mixed-methods study compared the effects of an unfolding case study with lecture in a nursing orientation class on new graduate registered nurses' knowledge, perceived learning, and satisfaction with the instructional method. Although results showed that the unfolding case study was engaging, learners who received content in a lecture format achieved significantly higher posttest scores. Nursing professional development specialists will find this article helpful when considering instructional methods for new graduate registered nurses.
Sleep disturbance in Mowat-Wilson syndrome.
Evans, Elizabeth; Mowat, David; Wilson, Meredith; Einfeld, Stewart
2016-03-01
Mowat-Wilson syndrome (MWS) is a multiple congenital anomaly syndrome caused by a heterozygous mutation or deletion of the ZEB2 gene. It is characterized by a distinctive facial appearance in association with intellectual disability (ID) and variable other features including agenesis of the corpus callosum, seizures, congenital heart defects, microcephaly, short stature, hypotonia, and Hirschsprung disease. The current study investigated sleep disturbance in people with MWS. In a series of unstructured interviews focused on development and behaviors in MWS, family members frequently reported sleep disturbance, particularly early-morning waking and frequent night waking. The Sleep Disturbance Scale for Children (SDSC) was therefore administered to a sample of 35 individuals with MWS, along with the Developmental Behaviour Checklist (DBC) to measure behavioral and emotional disturbance. A high level of sleep disturbance was found in the MWS sample, with 53% scoring in the borderline range and 44% in the clinical disorder range for at least one subscale of the SDSC. Scores were highest for the Sleep-wake transition disorders subscale, with 91% of participants reaching at least the borderline disorder range. A significant positive association was found between total scores on the SDSC and the DBC Total Behaviour Problem Score. These results suggest that sleep disorders should be screened for in people with MWS, and where appropriate, referrals to sleep specialists made for management of sleep problems.
Mowat-Wilson syndrome: A case report
Čuturilo Goran
2009-01-01
Full Text Available Introduction. Mowat-Wilson syndrome (MWS is characterised by severe mental retardation and multiple congenital anomalies. Key features for diagnosis are specific facial dysmorphism with uplifted ear lobes and Hirschsprung's disease. Ganglionic disorders of the colon, both the number of ganglion cells and the length of the aganglionic segment vary significantly in these patients. The disease is caused by ZFHX1B gene mutation. The management of MWS is symptomatic. Case outline. We report a four-year old boy with mental retardation, specific facial dysmorphy and multiple anomalies. During prenatal follow-up intrauterine growth retardation was revealed. Karyotype was normal. Clinical findings showed that growth and mental retardation, gastrointestinal disturbance and heart defect were predominant. A gastrostoma was inserted. Hypoganglionosis of the colon caused severe obstipation. He had a severe stenosis of the pulmonary artery and was a candidate for cardiac surgery. There were several attempts to establish diagnosis, but so far, without results. Conclusion. Hirschsprung's disease/hypoganglionosis of the colon associated with other congenital anomalies or mental retardation require evaluation for dysmorphic syndromes. One of them is MWS, presented in this report.
Wilson disease in a Nigerian child: a case report
Esezobor Christopher
2012-07-01
Full Text Available Abstract Introduction Wilson disease is rarely reported among African children. This report describes the second case report of a Nigerian child with Wilson disease in three decades. Case presentation An eight-year-old African boy presented with generalized oedema and ascites and proteinuria. Over the next three weeks he developed conjugated hyperbilirubinaemia, severe coagulopathy and prominent extrapyramidal features consisting of rigidity, tremors at rest and in action, shuffling gait, slurred speech and emotional lability. Slit-lamp examination of his eyes revealed Kayser-Fleischer rings and sunflower cataracts. His serum caeruloplasmin level was 5mg/dL. Using the scoring system proposed by the 8th International Meeting of Wilson Disease and Menkes Disease, a diagnosis of Wilson disease was made. Conclusions Wilson disease does occur in African children, although the diagnosis is rarely made. A diagnosis of Wilson disease should be entertained in the evaluation of African children presenting with liver dysfunction and/or extrapyramidal neurological features.
The second-order Klein-Gordon field equation
Gomes, D.; E. Capelas De Oliveira
2004-01-01
We introduce and discuss the generalized Klein-Gordon second-order partial differential equation in the Robertson-Walker space-time, using the Casimir second-order invariant operator written in hyperspherical coordinates. The de Sitter and anti-de Sitter space-times are recovered by means of a convenient choice of the parameter associated to the space-time curvature. As an application, we discuss a few properties of the solutions. We also discuss the case where we have positive frequency expo...
2009 Epigenetics Gordon Research Conference (August 9 - 14, 2009)
Jeanie Lee
2009-08-14
Epigenetics refers to the study of heritable changes in genome function that occur without a change in primary DNA sequence. The 2009 Gordon Conference in Epigenetics will feature discussion of various epigenetic phenomena, emerging understanding of their underlying mechanisms, and the growing appreciation that human, animal, and plant health all depend on proper epigenetic control. Special emphasis will be placed on genome-environment interactions particularly as they relate to human disease. Towards improving knowledge of molecular mechanisms, the conference will feature international leaders studying the roles of higher order chromatin structure, noncoding RNA, repeat elements, nuclear organization, and morphogenic evolution. Traditional and new model organisms are selected from plants, fungi, and metazoans.
Linda Gordon, Dorothea Lange: A Life Beyond Limits
Hélène Quanquin
2012-03-01
Full Text Available In June 2007, the Schlesinger Library at the Radcliffe Institute for Advanced Study at Harvard University organized its first summer seminar on “Writing Past Lives: Biography as History,” which sought to investigate “how a focus on individual lives can further historical analysis.” One of the plenary speakers was Linda Gordon, who was invited to speak on her work on the biography of American documentary photographer Dorothea Lange. The first picture which she showed was neither “Migrant Mothe...
Weiss, J S
2016-06-01
The first Oskar Fehr lecture is given in honour of Professor Fehr, a well respected ophthalmologist, who was head physician of the Department of Eye Diseases at the Rudolf Virchow Hospital from 1918. He practiced there until 1938, when he was forbidden to enter the clinic because he was Jewish and subject to the anti-Semitic laws that were instituted after the rise of the Nazi party. Dr. Fehr escaped to Great Britain, where he practiced ophthalmology into his eighties. He was the first to distinguish between granular corneal dystrophy, lattice corneal dystrophy and macular corneal dystrophy. The topic of the first Oskar Fehr lecture is Schnyder corneal dystrophy (SCD), an autosomal dominantly inherited corneal dystrophy associated with abnormal cholesterol deposition in the cornea. The clinical, histopathologic and genetic findings of 115 individuals with SCD followed over 18 years are discussed. The impact of systemic cholesterol metabolism on other diseases is reviewed. Corneal findings in SCD are predictable on the basis of patient age. All patients develop progressive corneal haze because of abnormal deposition of corneal lipid, but only half of patients with SCD have evidence of corneal crystals. The prior name for this disease, Schnyder crystalline corneal dystrophy, led me to create the International Committee for the Classification of Corneal Dystrophies, in order to create a more up-to-date and accurate nomenclature for SCD and other corneal dystrophies. The name was then changed to Schnyder corneal dystrophy. Histopathology of excised SCD corneas demonstrates abnormal deposition of only HDL cholesterol. Mutations in the UBIAD1 gene result in SCD. Three dimensional protein modeling shows that mutations result in impaired vitamin K synthesis, suggesting a common link between vitamin K and cholesterol metabolism. UBIAD1 mutations are associated with other diseases, such as bladder carcinoma and Parkinson's disease like findings in Drosophila. Studies of the
Stability discussion of two integration formats for Wilson-θ Method%Wilson-θ法两种积分格式的稳定性探讨
方德平; 王全凤
2008-01-01
Wilson-θ法分为加速度未经过和经过动力平衡方程修正的Wilson-θ①法和Wilson-θ②法;推导了单自由庹体系的Wilson-θ①、②法的状态传递算子,由传递算子的谱半径来判断Wilson-θ①、②法的稳定性.计算结果表明:Wilson-θ①法的稳定性是无条件的,Wilson-θ②法的稳定性不是无条件的;并给出了Wilson-θ②法的稳定范围.
Introductory Lectures on Collider Physics
Tait, Tim M. P.; Wang, Lian-Tao
2013-12-01
These are elementary lectures about collider physics. They are aimed at graduate students who have some background in computing Feynman diagrams and the Standard Model, but assume no particular sophistication with the physics of high energy colliders.
A new method to solve the damped nonlinear Klein-Gordon equation
2008-01-01
This paper discusses a damped nonlinear Klein-Gordon equation in the reproducing kernel space and provides a new method for solving the damped nonlinear Klein-Gordon equation based on the reproducing kernel space.Two numerical examples are given for illustrating the feasibility and accuracy of the method.
2013-06-17
... Anthropology, Detroit, MI AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Wayne State University Gordon L. Grosscup Museum of Anthropology (hereafter WSU Museum) has completed an inventory of... Anthropology, Wayne State University Gordon L. Grosscup Museum of Anthropology, 3056 F/AB, Detroit, MI...
From Pariah To Patriot: The Posthumous Career Of George William Gordon
Howard Johnson
2008-12-01
Full Text Available Examines the development of the reputation of George William Gordon in Jamaican collective remembering, in relation to changing social, political, and cultural contexts. Author describes Gordon's mixed-raced/brown background and later parliamentary activities in support of poor black labourers, and how he was sentenced to death by governor Eyre for supposedly inciting the 1865 Morant Bay Rebellion led by Paul Bogle. He relates how Gordon was in British historiography depicted as a traitor, while soon after 1865 Gordon was also defended as martyr and hero, and as unjustly sentenced. He shows how up to the early 20th c. the establishment perspective of Gordon as traitor and agitator persisted, but that competing discourses also developed. These came more to the fore since the introduction of universal adult suffrage in 1944, when Gordon first was publicly recognized as a patriot, and he was increasingly seen as national hero after independence. In addition, Gordon was presented, e.g. by the JLP, as a symbol of brown-black cooperation across race and class. Author notes, however, how this was also contested, and that a reputational decline of Gordon set in since the 1980s, increasing after 1992, due to sharpened brown-black divides, related to economic decline among Jamaica's black majority and black nationalism.
Functional Integrals and Free Energy in sine-Gordon-Thirring Model with Impurity Coupling
无
2007-01-01
The free energy at low temperature in ID sine-Gordon-Thirring model with impurity coupling is studied by means of functional integrals method. For massive free sine-Gordon-Thirring model, free energy is obtained from perturbation expansion of functional determinant. Moreover, the free energy of massive model is calculated by use of an auxiliary Bose Geld method.
Lectures on general relativity
Papapetrou, Achille
1974-01-01
This book is an elaboration of lecture notes for the graduate course on General Rela tivity given by the author at Boston University in the spring semester of 1972. It is an introduction to the subject only, as the time available for the course was limited. The author of an introduction to General Relativity is faced from the beginning with the difficult task of choosing which material to include. A general criterion as sisting in this choice is provided by the didactic character of the book: Those chapters have to be included in priority, which will be most useful to the reader in enabling him to understand the methods used in General Relativity, the results obtained so far and possibly the problems still to be solved. This criterion is not sufficient to ensure a unique choice. General Relativity has developed to such a degree, that it is impossible to include in an introductory textbook of a reasonable length even a very condensed treatment of all important problems which have been discussed unt...
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Monday 16 July 9:15 10:15 11:15 A. Pich O. Brüning / CERN C. Gaspar / CERN Particle Physics: the Standard Model (1/8) Accelerators (1/5) Trigger and Data Acquisition (1/3) Tuesday 17 July 9:15 10:15 11:15 A. Pich O. Brüning / CERN C. Gaspar / CERN Particle Physics: the Standard Model (2/8) Accelerators (2/5) Trigger and Data Acquisition (2/3) Wednesday 18 July 9:15 10:15 11:15 A. Pich O. Brüning / CERN A. Pich and O. Brüning Particle Physics: the Standard Model (3/8) Accelerators (3/5) Discussion Session Thursday 19 July 9:15 10:15 11:15 A. Pich O. Brüning / CERN C. Gaspar / CERN Particle Physics: the Standard Model (4/8) Accelerators (4/5) Trigger and Data Acquisition (3/3) Friday 20 July 9:15 10:15 11:15 A. Pich O. Brüning / CERN A. Pich and O. Brüning Particle Physics: the Standard Model (5/8) Accelerators (5/5) Discussion Session Monday 23 July 9:15 10:15 11:15 A. Pich R. Jacobse...
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Monday 23 July 9:15 10:15 11:15 A. Pich R. Jacobsen / LBLN, Berkeley (USA) T. Cass / CERN Particle Physics: the Standard Model (6/8) From Raw Data to Physics Results (1/3) Computing at CERN (1/3) Tuesday 24 July 9:15 10:15 11:15 A. Pich R. Jacobsen / LBLN, Berkeley (USA) T. Cass / CERN Particle Physics: the Standard Model (7/8) From Raw Data to Physics Results (2/3) Computing at CERN (2/3) Wednesday 25 July 9:15 10:15 11:15 A. Pich R. Jacobsen / LBLN, Berkeley (USA) A. Pich and R. Jacobsen J. Tuckmantel / CERN Particle Physics: the Standard Model (8/8) From Raw Data to Physics Results (3/3) Discussion Session Superconducting cavities Thursday 26 July 9:15 10:15 11:15 T. Nakada / CERN P. Wells / CERN T. Cass / CERN Violation of Particle Anti-particle Symmetry (1/3) LEP Physics (1/4) Computing at CERN (3/3) Friday 27July 9:15 10:15 11:15 T. Nakada / CERN P. Wells / CERN T. Nakada; T. Cass T. Nakada in main auditorium T. Cass in TH auditorium Violati...
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Monday 30 July 9:15 10:15 11:15 G. Guidice / CERN T. Nakada / CERN P. Wells / CERN Beyond the Standard Model (1/3) Violation of Particle Anti-particle Symmetry (3/3) LEP Physics (3/4) Tuesday 31 July 9:15 10:15 11:15 G. Guidice / CERN F. Dydak / CERN P. Wells / CERN P. Lebrun / CERN P. Lebrun / CERN Beyond the Standard Model (2/3) Neutrino Physics (1/4) LEP Physics (4/4) Superconducting Technology for particle accelerators (1/2) Superconducting Technology for particle accelerators (2/2) Wednesday 1 August 9:15 10:15 11:15 G. Guidice / CERN F. Dydak / CERN G. Guidice; P. Wells G. Guidice in main auditorium, P. Wells in TH auditorium) O. Grobner / CERN O. Grobner / CERN Beyond the Standard Model (3/3) Neutrino Physics (2/4) Discussion Session Ultra High Vacuum Technology (1/2) Ultra High Vacuum Technology (2/2) Thursday 2 August 9:15 10:15 11:15 F. Antinori / CERN F. Dydak / CERN J. Aysto / CERN Heavy Ions (1/2) Neutrino Physics (3/4) Isolde Physics O...
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Wednesday 4 July 9:15 10:15 11:15 14:00 15:00 15:45 L. Maiani / CERN L. Maiani / CERN M. Franklin / CERN G. Stevenson M. Diemoz O. Ullaland Introduction to CERN & Particle Physics (1/2) Introduction to CERN & Particle Physics (2/2) Classic Experiments (1/3) CERN Radiation Protection CERN Information on Activities CERN Intro to workshops Thursday 5 July 9:15 10:15 11:15 14:00 15:00 16:30 M. Franklin / CERN M. Franklin / CERN M. Franklin / CERN F. Close F. Close Classic Experiments (2/3) Classic Experiments (3/3) Discussion session Particle Physics (for non-physics students) (1/4) Particle Physics (for non-physics students) (2/4) Welcome Drink Friday 6 July 9:15 10:15 F. Close F. Close Particle Physics (for non-physics students) (3/4) Particle Physics (for non-physics students) (4/4) Monday 9 July 9:15 10:15 11:15 R. Kleiss / CERN L. Rolandi / CERN L. Rolandi / CERN Fundamental Concepts of Particle Physics (1/6) Big Experime...
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Wednesday 4 July 9:15 10:15 11:15 14:00 15:00 15:45 L. Maiani / CERN L. Maiani / CERN M. Franklin / CERN G. Stevenson M. Diemoz O. Ullaland Introduction to CERN & Particle Physics (1/2) Introduction to CERN & Particle Physics (2/2) Classic Experiments (1/3) CERN Radiation Protection CERN Information on Activities CERN Intro to workshops Thursday 5 July 9:15 10:15 11:15 14:00 15:00 16:30 M. Franklin / CERN M. Franklin / CERN M. Franklin / CERN F. Close F. Close Classic Experiments (2/3) Classic Experiments (3/3) Discussion session Particle Physics (for non-physics students) (1/4) Particle Physics (for non-physics students) (2/4) Welcome Drink Friday 6 July 9:15 10:15 F. Close F. Close Particle Physics (for non-physics students) (3/4) Particle Physics (for non-physics students) (4/4) Further information can be obtained on the web at the following URL: http://cern.web.cern.ch/CERN/Divisions/PE/HRS/Recruitment/sum_prog99.html
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Monday 6 August 9:15 10:15 11:15 F. Gianotti / CERN J. Carr / CERN E. Copeland / Centre for Theoretical Physics University of Sussex, UK LHC Physics (1/3) Astroparticle Physics (1/3) Introduction to Cosmology (1/2) Tuesday 7 August 9:15 10:15 11:15 14:00 15:00 F. Gianotti / CERN J. Carr / CERN E. Copeland / Centre for Theoretical Physics University of Sussex, UK LHC Physics (2/3) Astroparticle Physics (2/3) Introduction to Cosmology (2/2) Wednesday 8 August 9:15 10:15 11:15 14:00 15:00 F. Gianotti / CERN J. Carr / CERN J. Carr; F. Gianotti J. Carr in main auditorium F. Gianotti in TH auditorium LHC Physics (2/3) Astroparticle Physics (2/3) Discussion Session Thursday 9 August 9:15 10:15 11:15 G. Veneziano / CERN G. Veneziano; E. Copeland G. Veneziano in main auditorium E. Copeland in TH auditorium Dreams of a Finite Theory (1/2) Student Session (1/3) Discussion Session Friday 10 August 9:15 10:15 11:15 G. Veneziano / CERN L. Okun / CERN Student Se...
SUMMER STUDENT LECTURE PROGRAMME
Academic Training; Tel. 73127
2001-01-01
Main Auditorium bldg. 500 Date Time Lecturer Title Monday 9 July 9:15 10:15 11:15 R. Kleiss / CERN L. Rolandi / CERN L. Rolandi / CERN Fundamental Concepts of Particle Physics (1/6) Big Experiments Discussion Session Tuesday 10 July 9:15 10:15 11:15 R. Kleiss / CERN R. Kleiss / CERN C. Joram Fundamental Concepts of Particle Physics (2/6) Fundamental Concepts of Particle Physics (3/6) Particle Detectors (1/5) Wednesday 11 July 9:15 10:15 11:15 R. Kleiss / CERN C. Joram / CERN R. Kleiss / C. Joram Fundamental Concepts of Particle Physics (4/6) Particle Detectors (2/5) Discussion Session Thursday 12 July 9:15 10:15 11:15 R. Kleiss / CERN C. Joram / CERN C. Joram / CERN Fundamental Concepts of Particle Physics (5/6) Particle Detectors (3/5) Particle Detectors (4/5) Friday 13 July 9:15 10:15 11:15 R. Kleiss / CERN C. Joram / CERN R. Kleiss / C. Joram Fundamental Concepts of Particle Physics (6/6) Particle Detectors (5/5) Discussion Session Monday 16 July 9:15 10:15 11:15 A. Pich O. Brüning C...
Hoyer, Paul
2016-01-01
Even a first approximation of bound states requires contributions of all powers in the coupling. This means that the concept of "lowest order bound state" needs to be defined. In these lectures I discuss the "Born" (no loop, lowest order in $\\hbar$) approximation. Born level states are bound by gauge fields which satisfy the classical field equations. As a check of the method, Positronium states of any momentum are determined as eigenstates of the QED Hamiltonian, quantized at equal time. Analogously, states bound by a strong external field $A^\\mu(\\xv)$ are found as eigenstates of the Dirac Hamiltonian. Their Fock states have dynamically created $e^+e^-$ pairs, whose distribution is determined by the Dirac wave function. The linear potential of $D=1+1$ dimensions confines electrons but repels positrons. As a result, the mass spectrum is continuous and the wave functions have features of both bound states and plane waves. The classical solutions of Gauss' law are explored for hadrons in QCD. A non-vanishing bo...
Academic Training; Tel. 73127
2001-01-01
14, 15, 16, 17, 18 January LECTURES FOR POSTGRADUATE STUDENTS From 11:00 hrs - Auditorium, bldg 500 Superconducting materials suitable for magnets D.C. Larbalestier / Univ. of Wisconsin, USA The range of materials available for superconducting magnets is steadily expanding, even as the choice of material becomes potentially more complex. When virtually all magnets were cooled by helium at ~2-5 K it was easy to separate the domain of Nb-Ti from those of Nb3Sn applications and very little surprise that more than 90% of all magnets are still made from Nb-Ti. But the development of useful conductors of the Bi-Sr-Ca-Cu-O and YBa2Cu3Ox high temperature superconductors, coupled to the recent discovery of the 39 K superconductor MgB2 and the developing availability of cryocoolers suggests that new classes of higher temperature, medium field magnets based on other than Nb-based conductors could become available in the next 5-10 years. My talks will discuss the essential physics and materials science of these 5 classes...
Academic Training; Tel. 73127
2002-01-01
14, 15, 16, 17, 18 January LECTURE SERIES From 11:00 hrs - Auditorium, bldg 500 Superconducting materials suitable for magnets D.C. Larbalestier / Univ. of Wisconsin, USA The range of materials available for superconducting magnets is steadily expanding, even as the choice of material becomes potentially more complex. When virtually all magnets were cooled by helium at ~2-5 K it was easy to separate the domain of Nb-Ti from those of Nb3Sn applications and very little surprise that more than 90% of all magnets are still made from Nb-Ti. But the development of useful conductors of the Bi-Sr-Ca-Cu-O and YBa2Cu3Ox high temperature superconductors, coupled to the recent discovery of the 39 K superconductor MgB2 and the developing availability of cryocoolers suggests that new classes of higher temperature, medium field magnets based on other than Nb-based conductors could become available in the next 5-10 years. My talks will discuss the essential physics and materials science of these 5 classes of material - Nb-Ti...
Academic Training; Tel. 73127
2001-01-01
27, 28, 29 June and 2, 3 July REGULAR LECTURE PROGRAMME From 11:00 hrs - Council Chamber bldg. 503 on 27, 28, 29 June and Auditorium, bldg 500 on 2, 3 July Particle Identification at the LHC P. Eerola / Lund University, SE The LHC experiments will explore new frontiers of particle physics. To maximize the physics potential of LHC, we need identification of leptons, hadrons, photons and 'invisible' particles. This is realized through reconstruction of electrons and muons, charged particle tracking and identification, b- and tau-tagging, and jet reconstruction. In addition, missing energy has to be measured in order to look for signatures of invisible particles. The experimental conditions posed by the collider, which will be operating at higher energy and luminosity than the present ones, are demanding. A large dynamical range is required in order to measure energies and momenta ranging from below one GeV to several TeVs. The detectors should be able to cope with the 40 MHz collision rate, with a large number ...
PH Department
2010-01-01
13 December 2010 14:30 - Council Chamber, Bldg.503-1-001 Accelerator Breakthroughs, Achievements and Lessons from the Tevatron Collider V. Shiltsev / Fermilab’s Accelerator Physics Centre This year we celebrate the 25th anniversary of the first proton-antiproton collisions in the Tevatron. For two and a half decades the Tevatron at Fermilab (Batavia, IL, USA) was a centerpiece of the US and world’s High Energy Physics as the world’s highest energy particle collider at 1.8 TeV center of mass energy. While funding agencies are deciding on a 3-year extension of the Collider Run II operation through 2014, we – in this 2010 John Adams Lecture - will take a look in exciting story of the Tevatron: the story of long preparations, great expectations, numerous difficulties, years of “blood and sweat”, continuous upgrades, exceeding original goals (by a factor of 400) and high emotions. An accelerator scientist prospective will be given on a wide spectrum o...
Academic Training; Tel. 73127
2001-01-01
27, 28, 29 June and 2, 3 July REGULAR LECTURE PROGRAMME From 11:00 hrs - Council Chamber bldg. 503 on 27, 28, 29 June and Auditorium, bldg 500 on 2, 3 July Particle Identification at the LHC P. Eerola / Lund University, SE The LHC experiments will explore new frontiers of particle physics. To maximize the physics potential of LHC, we need identification of leptons, hadrons, photons and 'invisible' particles. This is realized through reconstruction of electrons and muons, charged particle tracking and identification, b- and tau-tagging, and jet reconstruction. In addition, missing energy has to be measured in order to look for signatures of invisible particles. The experimental conditions posed by the collider, which will be operating at higher energy and luminosity than the present ones, are demanding. A large dynamical range is required in order to measure energies and momenta ranging from below one GeV to several TeVs. The detectors should be able to cope with the 40 MHz collision rate, with a large number ...
SUMMER STUDENT LECTURE PROGRAMME
Françoise Benz
2002-01-01
Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Monday 22 July 09:15 - 10:00 A. PICH Standard Model (6/8) 10:15 - 11:00 J. CARR Astroparticles (1/3) 11:15 - 12:00 J. SHIERS Computing (1/3) Tuesday 23 July 09:15 - 10:00 A. PICH Standard Model (7/8) 10:15 - 11:00 J. CARR Astroparticles (2/3) 11:15 - 12:00 J. SHIERS Computing (2/3) Wednesday 24July 09:15 - 10:00 A. PICH Standard Model (8/8) 10:15 - 11:00 J. CARR Astroparticles (3/3) 11:15 - 12:00 Discussion Session 14:00 - 16:00 O. GROBNER UHV Technology Thursday 25 July (Theory Auditorium) 09:15 - 10:00 R. RATTAZZI Beyond the Standard Model (1/3) (TH) 10:15 - 11:00 P. WELLS Experimental test of the SM - LEP (1/3) (TH) 11:15 - 12:00 J. SHIERS Computing (3/3) (TH) Friday 26 July 09:15 - 10:00 R. RATTAZZI Beyond the Standard Model (2/3) 10:15 - 11:00 P. WELLS Experimental test of the SM - LEP (2/3) 11:15 - 12:00 Discussion Session Monday 29 July 09:15 - 10:00 R...
SUMMER STUDENT LECTURE PROGRAMME
Françoise Benz
2002-01-01
Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Monday 15 July 09:15 - 10:00 A. PICH Standard Model (1/8) 10:15 - 11:00 O. BRÜNING Accelerators (1/5) 11:15 - 12:00 C. GASPAR Trigger and Data Acquisition (1/3) Tuesday 16 July 09:15 - 10:00 A. PICH Standard Model (2/8) 10:15 - 11:00 O. BRÜNING Accelerators (2/5) 11:15 - 12:00 C. GASPAR Trigger and Data Acquisition (2/3) Wednesday 17 July 09:15 - 10:00 A. PICH Standard Model (3/8) 10:15 - 11:00 O. BRÜNING Accelerators (3/5) 11:15 - 12:00 Discussion Session Thursday 18 July 09:15 - 10:00 A. PICH Standard Model (4/8) 10:15 - 11:00 O. BRÜNING Accelerators (4/5) 11:15 - 12:00 C. GASPAR Trigger and Data Acquisition (3/3) Friday 19 July 09:15 - 10:00 A. PICH Standard Model (5/8) 10:15 - 11:00 O. BRÜNING Accelerators (5/5) 11:15 - 12:00 Discussion Session Monday 22 July 09:15 - 10:00 A. PICH Standard Model (6/8) 10:15 - 11:00 T. WENAUS From Raw Data to Physics ...
SUMMER STUDENT LECTURE PROGRAMME
Françoise Benz
2002-01-01
Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Monday 8 July 09:15 - 10:00 R. KLEISS Fundamental Concepts of Particle Physics (1/6) 10:15 - 11:00 C. JORAM Particle Detectors (2/5) 11:15 - 12:00 M. FRANKLIN Classic Experiments (1/3) 14:00 - 15:00 M. LINDROOS Isolde 15:30 - 16:30 M. LINDROOS Visit of the Experiment Tuesday 9 july 09:15 - 10:00 R. KLEISS Fundamental Concepts of Particle Physics (2/6) 10:15 - 11:00 C. JORAM Particle Detectors (3/5) 11:15 - 12:00 M. FRANKLIN Classic Experiments (2/3) Wednesday 10 July 09:15 - 10:00 R. KLEISS Fundamental Concepts of Particle Physics (3/6) 10:15 - 11:00 C. JORAM Particle Detectors (4/5) 11:15 - 12:00 Discussion Session Thursday 11 July 09:15 - 10:00 R. KLEISS Fundamental Concepts of Particle Physics (4/6) 10:15 - 11:00 C. JORAM Particle Detectors (5/5) 11:15 - 12:00 M. FRANKLIN Classic Experiments (3/3) Friday 12 July 09:15 - 11:00 R. KLEISS Fundamental Concepts of Particle Physics (5&6/6) 11:15 ...
SUMMER STUDENT LECTURE PROGRAMME
Françoise Benz
2002-01-01
Main Auditorium, bldg. 500 DATE TIME LECTURER TITLE Wednesday 3 July 09:15 - 10:00 L. FAYARD, O. ULLALAND Presentation of the Summer Student Programm 10:15 - 12:00 L. MAIANI Introduction to CERN (1&2/2) 14:00 - 15:00 G. Stevenson Radiation Protection (Council Chamber, bldg.503) Thursday 4 July 09:15 - 11:00 F. CLOSE Introduction to Particle Physics for non Physics Students (1&2/4) 11:15 - 12:00 C. JORAM Particle Detectors (1/5) Friday 5 July 09:15 - 11:00 F. CLOSE Introduction to Particle Physics for non Physics Students (3&4/4) 11:15 - 12:00 Discussion Session Monday 8 July 09:15 - 10:00 R. KLEISS Fundamental Concepts of Particle Physics (1/6) 10:15 - 11:00 C. JORAM Particle Detectors (2/5) 11:15 - 12:00 M. FRANKLIN Classic Experiments (1/3) 14:00 - 15:00 M. LINDROOS Isolde 15:30 - 16:30 M. LINDROOS Visit of the Experiment Tuesday 9 july 09:15 - 10:00 R. KLEISS Fundamental Concepts of Particle Physics (2/6) 10:15 - 11:00 C. JORAM Part...
Grabe, M.; Christopherson, K.
2008-01-01
One of the most common uses of a course management system in the on-campus environment is to offer lecture resources to students. Few researchers have investigated how students use such resources. This study considers student use of lecture resources that offer a representation of the lecture presented (i.e. lecture outline, lecture summary, audio…
A genetic study of Wilson's disease in the United Kingdom.
Coffey, Alison J; Durkie, Miranda; Hague, Stephen; McLay, Kirsten; Emmerson, Jennifer; Lo, Christine; Klaffke, Stefanie; Joyce, Christopher J; Dhawan, Anil; Hadzic, Nedim; Mieli-Vergani, Giorgina; Kirk, Richard; Elizabeth Allen, K; Nicholl, David; Wong, Siew; Griffiths, William; Smithson, Sarah; Giffin, Nicola; Taha, Ali; Connolly, Sally; Gillett, Godfrey T; Tanner, Stuart; Bonham, Jim; Sharrack, Basil; Palotie, Aarno; Rattray, Magnus; Dalton, Ann; Bandmann, Oliver
2013-05-01
Previous studies have failed to identify mutations in the Wilson's disease gene ATP7B in a significant number of clinically diagnosed cases. This has led to concerns about genetic heterogeneity for this condition but also suggested the presence of unusual mutational mechanisms. We now present our findings in 181 patients from the United Kingdom with clinically and biochemically confirmed Wilson's disease. A total of 116 different ATP7B mutations were detected, 32 of which are novel. The overall mutation detection frequency was 98%. The likelihood of mutations in genes other than ATP7B causing a Wilson's disease phenotype is therefore very low. We report the first cases with Wilson's disease due to segmental uniparental isodisomy as well as three patients with three ATP7B mutations and three families with Wilson's disease in two consecutive generations. We determined the genetic prevalence of Wilson's disease in the United Kingdom by sequencing the entire coding region and adjacent splice sites of ATP7B in 1000 control subjects. The frequency of all single nucleotide variants with in silico evidence of pathogenicity (Class 1 variant) was 0.056 or 0.040 if only those single nucleotide variants that had previously been reported as mutations in patients with Wilson's disease were included in the analysis (Class 2 variant). The frequency of heterozygote, putative or definite disease-associated ATP7B mutations was therefore considerably higher than the previously reported occurrence of 1:90 (or 0.011) for heterozygote ATP7B mutation carriers in the general population (P Wilson's disease of 1:30 000 (P = 0.00093). Our study provides strong evidence for monogenic inheritance of Wilson's disease. It also has major implications for ATP7B analysis in clinical practice, namely the need to consider unusual genetic mechanisms such as uniparental disomy or the possible presence of three ATP7B mutations. The marked discrepancy between the genetic prevalence and the number of
On the Klein–Gordon oscillator subject to a Coulomb-type potential
Bakke, K., E-mail: kbakke@fisica.ufpb.br; Furtado, C., E-mail: furtado@fisica.ufpb.br
2015-04-15
By introducing the scalar potential as modification in the mass term of the Klein–Gordon equation, the influence of a Coulomb-type potential on the Klein–Gordon oscillator is investigated. Relativistic bound states solutions are achieved to both attractive and repulsive Coulomb-type potentials and the arising of a quantum effect characterized by the dependence of angular frequency of the Klein–Gordon oscillator on the quantum numbers of the system is shown. - Highlights: • Interaction between the Klein–Gordon oscillator and a modified mass term. • Relativistic bound states for both attractive and repulsive Coulomb-type potentials. • Dependence of the Klein–Gordon oscillator frequency on the quantum numbers. • Relativistic analogue of a position-dependent mass system.
Dor Ben-Amotz, PI
2012-08-17
Understanding the fundamental principles governing the structure and dynamics of water - and particularly how water mediates chemical interactions and processes - continues to pose formidable challenges and yield abundant surprises. The focus of this Gordon Research Conference is on identifying key questions, describing emerging understandings, and unveiling surprising discoveries related to water and aqueous solutions. The talks and posters at this meeting will describe studies of water and its interactions with objects such as interfaces, channels, electrons, oils, ions, and proteins; probed using optical, electrical, and particle experiments, and described using classical, quantum, and multi-scale theories.
Kentle, R L
1994-10-01
Correlations of scores on the Eysenck Personality Inventory with those on the Gordon Personal Profile (for 160 university undergraduates) and with the Gordon Personal Inventory (for 260 undergraduates) showed that Eysenck and Eysenck's Extraversion and Neuroticism bear reasonably close correspondence to Gordon's Sociability and Emotional Stability.
Numerical computation of travelling breathers in Klein Gordon chains
Sire, Yannick; James, Guillaume
2005-05-01
We numerically study the existence of travelling breathers in Klein-Gordon chains, which consist of one-dimensional networks of nonlinear oscillators in an anharmonic on-site potential, linearly coupled to their nearest neighbors. Travelling breathers are spatially localized solutions having the property of being exactly translated by p sites along the chain after a fixed propagation time T (these solutions generalize the concept of solitary waves for which p=1). In the case of even on-site potentials, the existence of small amplitude travelling breathers superposed on a small oscillatory tail has been proved recently [G. James, Y. Sire, Travelling breathers with exponentially small tails in a chain of nonlinear oscillators, Commun. Math. Phys., 2005, in press (available online at http://www.springerlink.com)], the tail being exponentially small with respect to the central oscillation size. In this paper, we compute these solutions numerically and continue them into the large amplitude regime for different types of even potentials. We find that Klein-Gordon chains can support highly localized travelling breather solutions superposed on an oscillatory tail. We provide examples where the tail can be made very small and is difficult to detect at the scale of central oscillations. In addition, we numerically observe the existence of these solutions in the case of non-even potentials.
Semiclassical versus exact quantization of the Sinh-Gordon model
Grossehelweg, Juliane
2009-12-15
In this work we investigate the semiclassics of the Sinh-Gordon model. The Sinh-Gordon model is integrable, its explicit solutions of the classical and the quantum model are well known. This allows for a comprehensive investigation of the semiclassical quantization of the classical model as well as of the semiclassical limit of the exact quantum solution. Semiclassical means in this case that the key objects of quantum theory are constructed as formal power series. A quantity playing an important role in the quantum theory is the Q-function. The purpose of this work is to investigate to what extend the classical integrability of the model admits of a construction of the semiclassical expansion of the Q-function. Therefore we used two conceptual independent approaches. In the one approach we start from the exact nonperturbative solution of the quantum model and calculate the semiclassical limit up to the next to leading order. Thereby we found the spectral curve, as well as the semiclassical expansion of the Q-function and of the eigenvalue of the monodromy matrix. In the other approach we constructed the first two orders of the semiclassical expansion of the Q-function, starting from the classical solution theory. The results of both approaches coincide. (orig.)
Semiclassical versus exact quantization of the Sinh-Gordon model
Grossehelweg, Juliane
2009-12-15
In this work we investigate the semiclassics of the Sinh-Gordon model. The Sinh-Gordon model is integrable, its explicit solutions of the classical and the quantum model are well known. This allows for a comprehensive investigation of the semiclassical quantization of the classical model as well as of the semiclassical limit of the exact quantum solution. Semiclassical means in this case that the key objects of quantum theory are constructed as formal power series. A quantity playing an important role in the quantum theory is the Q-function. The purpose of this work is to investigate to what extend the classical integrability of the model admits of a construction of the semiclassical expansion of the Q-function. Therefore we used two conceptual independent approaches. In the one approach we start from the exact nonperturbative solution of the quantum model and calculate the semiclassical limit up to the next to leading order. Thereby we found the spectral curve, as well as the semiclassical expansion of the Q-function and of the eigenvalue of the monodromy matrix. In the other approach we constructed the first two orders of the semiclassical expansion of the Q-function, starting from the classical solution theory. The results of both approaches coincide. (orig.)
2010 Gordon Research Conference, Electrochemistry, January 9-15, 2010
Creager, Stephen [Clemson Univ., SC (United States)
2010-12-31
Electrochemical science plays a crucial role in many important technologies and is intimately involved in many natural phenomena. Several new Gordon Research Conferences have appeared recently that are dedicated to electrochemical technologies, however electrochemistry as a discipline continues to thrive and provide the underpinnings of these technologies. The 2010 Electrochemistry GRC will focus on a wide range of fundamental electrochemical phenomena and materials and on their application in areas involving energy storage, information storage, chemical analysis, and motion actuation. The meeting will include sessions dedicated to the following specific topics: electrochemical energy storage (e.g. batteries; at least two sessions); electrochemical motion actuation (e.g. electrokinesis); electrocatalysis; electrochemistry in digital information storage; and bioelectrochemistry (including bioanalysis). An Open Session devoted to highlighting the activities of {approx}10 young investigators and non-North American visitors via brief 10-minute talks, and two open poster sessions highlighting the contributions of approximately 60 conference participants including graduate students, will be held. Altogether the conference is expected to include approximately 90 presentations. As has been the case in the recent past, the meeting will bring together participants from academia, national labs, and the private sector, including senior and junior-level scientists, postdoctoral scientists, and graduate students for informal interactions and exchange of ideas. An affiliated Gordon-Kenan Research Seminar (GRS) will also be held with the conference. Special efforts will be made to invite participation from members of underrepresented groups.
Pregnancy in Wilson disease - management and outcome.
Pfeiffenberger, Jan; Beinhardt, Sandra; Gotthardt, Daniel N; Haag, Nicola; Freissmuth, Clarissa; Reuner, Ulrike; Gauss, Annika; Stremmel, Wolfgang; Schilsky, Michael L; Ferenci, Peter; Weiss, Karl Heinz
2017-08-31
Introduction Wilson disease (WD) is a rare inherited disorder of copper metabolism causing toxic hepatic and neural copper accumulation. Clinical symptoms vary widely, from asymptomatic disease to acute liver failure or chronic liver disease without or with neuropsychiatric symptoms. Continuation of specific medical treatment for WD is recommended during pregnancy, but reports of pregnancy outcomes in WD patients are sparse. Patients and methods In a retrospective, multicenter study, 282 pregnancies in 136 WD patients were reviewed. Age at disease onset, age at conception and WD-specific treatments were recorded. Maternal complications during pregnancy, rate of spontaneous abortions and birth defects were analyzed with respect to medical treatment during pregnancy. Results Worsening of liver function tests was evident during 16/282 (6%) pregnancies and occurred in undiagnosed patients as well as in those under medical treatment. Liver test abnormalities resolved in all cases after delivery. Aggravation of neurological symptoms during pregnancy was rare (1%) but tended to persist after delivery. The overall spontaneous abortion rate in the study cohort was 73/282 (26%). Patients with an established diagnosis of WD receiving medical treatment experienced significantly fewer spontaneous abortions than patients with undiagnosed WD (Odds ratio: 2.853 [95% CI: 1.634-4.982]). Birth defects occurred in 7/209 (3%) live births. Conclusion Pregnancy in WD patients on anti-copper therapy is safe. The spontaneous abortion rate in treated patients was lower than that in therapy-naive patients. Although the teratogenic potential of copper chelators is a concern, the rate of birth defects in our cohort was low. Treatment for WD should be maintained during pregnancy, and patients should be monitored closely for hepatic and neurologic symptoms. This article is protected by copyright. All rights reserved. © 2017 by the American Association for the Study of Liver Diseases.
The Wilson disease gene: Haplotypes and mutations
Thomas, G.R.; Roberts, E.A.; Cox, D.W. [Hospital for Sick Children, Toronto (Canada); Walshe, J.M. [Middlesex Hospital, London (United Kingdom)
1994-09-01
Wilson disease (WND) is an autosomal recessive defect of copper transport. The gene involved in WND, located on chromosome 13, has recently been shown to be a putative copper transporting P-type ATPase, designated ATP7B. The gene is highly similar to ATP7A, located on the X chromosome, which is defective in Menkes disease, another disorder of copper transport. We have available for study WND families from Canada (34 families), the United Kingdom (32 families), Japan (4 families), Iceland (3 families) and Hong Kong (2 families). We have utilized four highly polymorphic CA repeat markers (D13S296, D13S301, D13S314 and D13S316) surrounding the ATP7B locus to construct haplotypes in these families. Analysis indicates that there are many unique WND haplotypes not present on normal chromosomes and that there may be a large number of different WND mutations. We have screened the WND patients for mutations in the ATP7B gene. Fifty six patients, representing all of the identified haplotypes, have been screened using single strand conformational polymorphism (SSCP), followed by selective sequencing. To date, 19 mutations and 12 polymorphisms have been identified. All of the changes are nucleotide substitutions or small insertions/deletions and there is no evidence for larger deletions as seen in the similar gene on the X chromosome, ATP7A. Haplotypes of close markers and the ability to detect some of the mutations present in the gene allow for more reliable molecular diagnosis of presymptomatic sibs of WND patients. A reassessment of individuals previously diagnosed in the presymptomatic phase is now required, as we have have identified some heterozygotes who are biochemically indistinguishable from affected homozygotes. The identification of specific mutations will soon allow direct diagnosis of WND patients with a high level of certainty.
Exploring medical student decisions regarding attending live lectures and using recorded lectures.
Gupta, Anmol; Saks, Norma Susswein
2013-09-01
Student decisions about lecture attendance are based on anticipated effect on learning. Factors involved in decision-making, the use of recorded lectures and their effect on lecture attendance, all warrant investigation. This study was designed to identify factors in student decisions to attend live lectures, ways in which students use recorded lectures, and if their use affects live lecture attendance. A total of 213 first (M1) and second year (M2) medical students completed a survey about lecture attendance, and rated factors related to decisions to attend live lectures and to utilize recorded lectures. Responses were analyzed overall and by class year and gender. M1 attended a higher percentage of live lectures than M2, while both classes used the same percentage of recorded lectures. Females attended more live lectures, and used a smaller percentage of recorded lectures. The lecturer was a key in attendance decisions. Also considered were the subject and availability of other learning materials. Students use recorded lectures as replacement for live lectures and as supplement to them. Lectures, both live and recorded, are important for student learning. Decisions about lecture placement in the curriculum need to be based on course content and lecturer quality.
True unipolar ECG machine for Wilson Central Terminal measurements.
Gargiulo, Gaetano D
2015-01-01
Since its invention (more than 80 years ago), modern electrocardiography has employed a supposedly stable voltage reference (with little variation during the cardiac cycle) for half of the signals. This reference, known by the name of "Wilson Central Terminal" in honor of its inventor, is obtained by averaging the three active limb electrode voltages measured with respect to the return ground electrode. However, concerns have been raised by researchers about problems (biasing and misdiagnosis) associated with the ambiguous value and behavior of this reference voltage, which requires perfect and balanced contact of at least four electrodes to work properly. The Wilson Central Terminal has received scant research attention in the last few decades even though consideration of recent widespread medical practice (limb electrodes are repositioned closer to the torso for resting electrocardiography) has also sparkled concerns about the validity and diagnostic fitness of leads not referred to the Wilson Central Terminal. Using a true unipolar electrocardiography device capable of precisely measuring the Wilson Central Terminal, we show its unpredictable variability during the cardiac cycle and confirm that the integrity of cardinal leads is compromised as well as the Wilson Central Terminal when limb electrodes are placed close to the torso.
True Unipolar ECG Machine for Wilson Central Terminal Measurements
Gaetano D. Gargiulo
2015-01-01
Full Text Available Since its invention (more than 80 years ago, modern electrocardiography has employed a supposedly stable voltage reference (with little variation during the cardiac cycle for half of the signals. This reference, known by the name of “Wilson Central Terminal” in honor of its inventor, is obtained by averaging the three active limb electrode voltages measured with respect to the return ground electrode. However, concerns have been raised by researchers about problems (biasing and misdiagnosis associated with the ambiguous value and behavior of this reference voltage, which requires perfect and balanced contact of at least four electrodes to work properly. The Wilson Central Terminal has received scant research attention in the last few decades even though consideration of recent widespread medical practice (limb electrodes are repositioned closer to the torso for resting electrocardiography has also sparkled concerns about the validity and diagnostic fitness of leads not referred to the Wilson Central Terminal. Using a true unipolar electrocardiography device capable of precisely measuring the Wilson Central Terminal, we show its unpredictable variability during the cardiac cycle and confirm that the integrity of cardinal leads is compromised as well as the Wilson Central Terminal when limb electrodes are placed close to the torso.
Anesthetic Management of a Pediatric Patient With Wilsons Disease
Baykal, Mehmet; Karapolat, Sami
2010-01-01
Wilsons disease, characterized by cirrhosis, extrapyramidal symptoms and Kayser-Fleischer corneal rings, is a rare hereditary disease of human copper metabolism. Clinical findings in Wilsons disease are complex and neurological symptoms such as tremor, dysarthria, rigid dystonia, seizures, psychiatric disorders, acute liver failure, chronic hepatitis or cirrhosis may develop. A 4-year-old male patient was operated for traumatic depressed skull fracture and intracerebral hematoma. He was diagnosed with Wilsons disease at the age of 2.5 years and treated with zinc sulphate and D-penicillamine. General anesthesia was induced with propofol, fentanyl, atracurium, and maintained with isoflurane, and oxygen. No complications were encountered during the operation or in the postoperative period. We concluded that general anesthesia can successfully be given to Wilsons disease patients using an anesthetic agent, the metabolism of which is least affected by the liver disease, one that induces least hepatic toxicity. By close follow-up of patients clinically and biochemically, it is possible to reduce the complication rates to a minimum. Keywords Wilson's Disease; Craniocerebral trauma; Thoracic injuries; General anesthesia; Surgery PMID:21811529
Practical strategies for effective lectures.
Lenz, Peter H; McCallister, Jennifer W; Luks, Andrew M; Le, Tao T; Fessler, Henry E
2015-04-01
Lecturing is an essential teaching skill for scientists and health care professionals in pulmonary, critical care, and sleep medicine. However, few medical or scientific educators have received training in contemporary techniques or technology for large audience presentation. Interactive lecturing outperforms traditional, passive-style lecturing in educational outcomes, and is being increasingly incorporated into large group presentations. Evidence-based techniques range from the very simple, such as inserting pauses for audience discussion, to more technologically advanced approaches such as electronic audience response systems. Alternative software platforms such as Prezi can overcome some of the visual limits that the ubiquitous PowerPoint imposes on complex scientific narratives, and newer technology formats can help foster the interactive learning environment. Regardless of the technology, adherence to good principles of instructional design, multimedia learning, visualization of quantitative data, and informational public speaking can improve any lecture. The storyline must be clear, logical, and simplified compared with how it might be prepared for scientific publication. Succinct outline and summary slides can provide a roadmap for the audience. Changes of pace, and summaries or other cognitive breaks inserted every 15-20 minutes can renew attention. Graphics that emphasize clear, digestible data graphs or images over tables, and simple, focused tables over text slides, are more readily absorbed. Text slides should minimize words, using simple fonts in colors that contrast to a plain background. Adherence to these well-established principles and addition of some new approaches and technologies will yield an engaging lecture worth attending.
Instanton Corrections of 1/6 BPS Wilson Loops in ABJM Theory
Okuyama, Kazumi
2016-01-01
We study instanton corrections to the vacuum expectation value (VEV) of 1/6 BPS Wilson loops in ABJM theory from the Fermi gas approach. We mainly consider Wilson loops in the fundamental representation and winding Wilson loops, but we also initiate the study of Wilson loops with two boundaries. We find that the membrane instanton corrections to the Wilson loop VEV are determined by the refined topological string in the Nekrasov-Shatashvili limit, and the pole cancellation mechanism between membrane instantons and worldsheet instantons works also in the Wilson loop VEVs as in the case of the partition functions.
Lecture Quiz Extended: An Improvement of the Lecture Quiz Game
Tran, Long Tien
2008-01-01
Lecture Quiz is a game used to provide more active and participant students in lectures. The game is based on a server, a teacher client and a student client. In a master thesis done in 2007, Ole Kristian Mørch-Storstein and Terje Øfsdahl have explored concept of game to be used in higher education and develop a prototype game to further evaluate that concept. Their game has three components; the first one is the server part running on a server. This component connect to a database and provid...
Obituary: Andrew Stephen Wilson, 1947-2008
Veilleux, Sylvain
2009-01-01
On 24 May 2008, Andrew Stephen Wilson passed away at the age of 61, in his home in Silver Spring, Maryland, from complications resulting from a painful spinal illness. Andrew was arguably one of the first truly multi-wavelength astronomers of his generation. His scientific work on active galactic nuclei [AGN] spanned the entire electromagnetic spectrum from the radio to the X-rays. Andrew was born in Doncaster, Yorkshire, England, on 26 March 1947. He was the younger of two brothers whose births were separated by the Second World War. His father, Norman, came from a relatively affluent family who were coal merchants. His mother, Mary, came from a less comfortable background, one of seven children, daughter of a skilled cabinet maker/French polisher, who went through a very hard time during the depression. As a teacher, she placed enormous value on hard work and education as a way of gaining advancement in life. When Andrew was four, the family moved to Skipton, a nice market town in the Yorkshire dales. Andrew went to a small village school until age eleven when he entered Ermysted's Grammar School. He was an enthusiastic soccer and cricket player. He never lost his enthusiasm for soccer and supported the local soccer team, Leeds United, for all his life. Andrew also followed the Yorkshire county cricket team. Andrew's interest in astronomy stemmed from the fact that at Ermysted's Grammar School someone donated a four-inch refracting telescope, so he and his friends used to go back in the evenings to investigate the rings of Saturn, the moons of Jupiter, and various nebulae. While an undergraduate at Cambridge, Andrew joined the astronomy club and ground an 8-inch mirror by hand as a part of a telescope that he set up in the backyard of his parents' house. Andrew spent hours observing with this telescope, and it was the wonder of the family. At Cambridge, Andrew obtained his bachelor's degree with first-class honors in 1969. During a short visit in London with his
Light-cone Wilson loop in classical lattice gauge theory
Laine, M
2013-01-01
The transverse broadening of an energetic jet passing through a non-Abelian plasma is believed to be described by the thermal expectation value of a light-cone Wilson loop. In this exploratory study, we measure the light-cone Wilson loop with classical lattice gauge theory simulations. We observe, as suggested by previous studies, that there are strong interactions already at short transverse distances, which may lead to more efficient jet quenching than in leading-order perturbation theory. We also verify that the asymptotics of the Wilson loop do not change qualitatively when crossing the light cone, which supports arguments in the literature that infrared contributions to jet quenching can be studied with dimensionally reduced simulations in the space-like domain. Finally we speculate on possibilities for full four-dimensional lattice studies of the same observable, perhaps by employing shifted boundary conditions in order to simulate ensembles boosted by an imaginary velocity.
Misdiagnosis of Wilson's disease in a patient with psychiatric symptoms
Doval Nimisha
2016-01-01
Full Text Available Therapeutic outcome of Wilson's disease significantly depends upon its early recognition. As Wilson's disease is a rare disorder with protean manifestations, its diagnosis and subsequent treatment are often delayed. We elaborate here the case of a young boy who had initially presented with psychiatrc symptoms suggestive of dissociative fugue followed by withdrawn behaviour and was treated by a psychiatrist with minimal response. This was associated with symptoms of tremors, hypersalivation, and slowness of movements. This case highlights the delay in diagnosing Wilson's disease when faced with the case of a young adult with psychiatric manifestations. It is extremely important for physicians, psychiatrists and health professionals at primary care level to recognize and diagnose this treatable disease at an early stage.
White matter changes in Wilson's disease: A radiological enigma
Soumava Mukherjee
2016-01-01
Full Text Available Wilson's disease is a metabolic disorder which presents with hepatitis or hepatic decompensation commonly. Neurologic manifestations are late and include movement disorders, personality changes, and seizures. Magnetic resonance imaging (MRI brain shows high signal changes in putamen, lentiform nucleus, thalamus, and brainstem. White matter lesions are rare. We report a child of Wilson's disease who presented to us with dystonia, rigidity, myoclonus and had symmetrical white matter changes in the fronto-parietooccipital region. Diffusion restriction in bilateral frontoparietal areas was also seen which is rare in chronic cases like ours. Atypical MRI characteristics should be considered in patients with clinical signs of neurological involvement in Wilson's disease as it is a devastating but treatable disease.
Misdiagnosis of Wilson's Disease in a Patient with Psychiatric Symptoms.
Nimisha, Doval; Dhruv, Batra; Vikas, Moun; Sneh, Jha K; Rakesh, Shukla
2016-01-01
Therapeutic outcome of Wilson's disease significantly depends upon its early recognition. As Wilson's disease is a rare disorder with protean manifestations, its diagnosis and subsequent treatment are often delayed. We elaborate here the case of a young boy who had initially presented with psychiatrc symptoms suggestive of dissociative fugue followed by withdrawn behaviour and was treated by a psychiatrist with minimal response. This was associated with symptoms of tremors, hypersalivation, and slowness of movements. This case highlights the delay in diagnosing Wilson's disease when faced with the case of a young adult with psychiatric manifestations. It is extremely important for physicians, psychiatrists and health professionals at primary care level to recognize and diagnose this treatable disease at an early stage.
Clinical considerations for an effective medical therapy in Wilson's disease.
Weiss, Karl Heinz; Stremmel, Wolfgang
2014-05-01
Wilson's disease is an autosomal recessively inherited copper overload disorder that leads to hepatic and/or neurologic symptoms. More than a century after the first description of Wilson's disease, the available medical treatment options have not been standardized. The efficacy of the commonly used drugs is satisfactory for hepatic disease, but disappointing in the neurologic patients, including the risk of neurologic deterioration after the initiation of chelation therapy. An approach to overcome this problem is the careful and systematic assessment of biochemical response patterns and the quantitative monitoring of symptoms using validated rating scales. Standardized dosage strategies that address changes in copper pools might improve adherence and reduce side effects. Such an approach may reduce long-term morbidity. In this paper, we discuss considerations for an effective medical treatment and requirements for future studies in Wilson's disease.
White matter changes in Wilson's disease: A radiological enigma.
Mukherjee, Soumava; Solanki, Bhavesh; Guha, Goutam; Saha, Shankar Prasad
2016-01-01
Wilson's disease is a metabolic disorder which presents with hepatitis or hepatic decompensation commonly. Neurologic manifestations are late and include movement disorders, personality changes, and seizures. Magnetic resonance imaging (MRI) brain shows high signal changes in putamen, lentiform nucleus, thalamus, and brainstem. White matter lesions are rare. We report a child of Wilson's disease who presented to us with dystonia, rigidity, myoclonus and had symmetrical white matter changes in the fronto-parietooccipital region. Diffusion restriction in bilateral frontoparietal areas was also seen which is rare in chronic cases like ours. Atypical MRI characteristics should be considered in patients with clinical signs of neurological involvement in Wilson's disease as it is a devastating but treatable disease.
Low serum alkaline phosphatase activity in Wilson's disease.
Shaver, W A; Bhatt, H; Combes, B
1986-01-01
Low values for serum alkaline phosphatase activity were observed early in the course of two patients with Wilson's disease presenting with the combination of severe liver disease and Coombs' negative acute hemolytic anemia. A review of other cases of Wilson's disease revealed that 11 of 12 patients presenting with hemolytic anemia had values for serum alkaline phosphatase less than their respective sex- and age-adjusted mean values; in eight, serum alkaline phosphatase activity was less than the lower value for the normal range of the test. Low values for serum alkaline phosphatase were much less common in Wilson's disease patients with more chronic forms of presentation. Copper added in high concentration to serum in vitro did not have an important effect on serum alkaline phosphatase activity. The mechanism responsible for the decrease in serum alkaline phosphatase activity in patients is uncertain.
Lectures on Conformal Field Theory
Qualls, Joshua D
2015-01-01
These lectures notes are based on courses given at National Taiwan University, National Chiao-Tung University, and National Tsing Hua University in the spring term of 2015. Although the course was offered primarily for graduate students, these lecture notes have been prepared for a more general audience. They are intended as an introduction to conformal field theories in various dimensions, with applications related to topics of particular interest: topics include the conformal bootstrap program, boundary conformal field theory, and applications related to the AdS/CFT correspondence. We assume the reader to be familiar with quantum mechanics at the graduate level and to have some basic knowledge of quantum field theory. Familiarity with string theory is not a prerequisite for this lectures, although it can only help.
2011-11-01
Often I will listen to public radio on long drives when I am alone. Recently I happened to catch a program called "Don't Lecture Me" and it really caught my attention for several reasons. First, the speakers were all notable leaders in Physics Education Research such as Joe Redish, David Hestenes, and Eric Mazur. (See this month's WebSights column.) These folks are among many who have devoted their energies to understanding how students learn physics and how teachers can design classroom instruction and interactions to best meet the needs of learners. Second, on this particular trip, I had just observed a teacher whose class was very teacher-centered as the teacher lectured most of the class period. As we discussed this later, she expressed concern that she had to cover the material and didn't feel that she could do it without lecturing.
Blanton, Patricia
2011-11-01
Often I will listen to public radio on long drives when I am alone. Recently I happened to catch a program called ``Don't Lecture Me'' and it really caught my attention for several reasons. First, the speakers were all notable leaders in Physics Education Research such as Joe Redish, David Hestenes, and Eric Mazur. (See this month's WebSights column.) These folks are among many who have devoted their energies to understanding how students learn physics and how teachers can design classroom instruction and interactions to best meet the needs of learners. Second, on this particular trip, I had just observed a teacher whose class was very teacher-centered as the teacher lectured most of the class period. As we discussed this later, she expressed concern that she had to cover the material and didn't feel that she could do it without lecturing.
Gordon Rohlehr and the Culture Industry in Trinidad
Raymond Ramcharitar
2011-12-01
Full Text Available The terms "culture" and "cultural studies" in Trinidad and Tobago have been narrowly defined to mean Carnival and various other phenomena connected to the nationalist project. There has been little acknowledgement of cyber culture, alternative sexualities, consumerism, media, and in general the "Culture Industry", as theorised by Theodor Adorno and Max Horkheimer. One critic, Gordon Rohlehr, has over decades presented a body of work ostensibly focused on Carnival, but which also contains a cogent critique and outline of the Trinidad and Tobago Culture Industry (as contemplated by Adorno. A close reading of Rohlehr's work, and his intellectual antecedents, reveal a compelling critique of the Trinidadian/West Indian notion and practice of culture and cultural studies, and suggests areas for the discipline's expansion to better serve the needs of the region.
Massless Boundary Sine-Gordon Model Coupled to External Fields
Kogetsu, H
2005-01-01
We investigate a generalization of the massless boundary sine-Gordon model with conformal invariance, which has been used to describe an array of D-branes (or rolling tachyon). We consider a similar action whose couplings are replaced with external fields depending on the boundary coordinate. Even in the presence of the external fields, this model is still solvable, though it does not maintain the whole conformal symmetry. We obtain, to all orders in perturbation theory in terms of the external fields, a simpler expression of the boundary state and the disc partition function. As a by-product, we fix the relation between the bare couplings and the renormalized couplings which has been appeared in papers on tachyon lump and rolling tachyon.
Emergence of compact structures in a Klein-Gordon model.
Rosenau, Philip; Kashdan, Eugene
2010-01-22
The Klein-Gordon model (KG) phi=P{'}(|phi|)phi/|phi| is Lorenz invariant and has a finite wave speed, yet its localized modes, whether Q balls or vortices, suffer from the same fundamental flaw as all other solitons-they extend indefinitely. Using the KG model as a case study, we demonstrate that appending the site potential, P{a}(phi|), with a subquadratic part P(|phi|)=b{2}|phi|{1+delta}+P{a}(|phi|), 0
2011 Plant Lipids: Structure, Metabolism, & Function Gordon Research Conference
Christopher Benning
2011-02-04
This is the second Gordon Research Conference on 'Plant Lipids: Structure, Metabolism & Function'. It covers current topics in lipid structure, metabolism and function in eukaryotic photosynthetic organisms including seed plants, algae, mosses and ferns. Work in photosynthetic bacteria is considered as well as it serves the understanding of specific aspects of lipid metabolism in plants. Breakthroughs are discussed in research on plant lipids as diverse as glycerolipids, sphingolipids, lipids of the cell surface, isoprenoids, fatty acids and their derivatives. The program covers nine concepts at the forefront of research under which afore mentioned plant lipid classes are discussed. The goal is to integrate areas such as lipid signaling, basic lipid metabolism, membrane function, lipid analysis, and lipid engineering to achieve a high level of stimulating interaction among diverse researchers with interests in plant lipids. One Emphasis is on the dynamics and regulation of lipid metabolism during plant cell development and in response to environmental factors.
Kink propagation and trapping in a two dimensional curved sine-Gordon system
Sørensen, Mads Peter
The sine-Gordon equation is one of the three classical nonlinear partial differential equations possessing soliton solutions in the case of one spatial dimension. Extending the sine-Gordon equation to two spatial dimensions is relevant for applications to the dynamics of large area Josephson...... to investigate how kink shaped solitons of the sine-Gordon equation propagate through the bent section. We have found that the region with finite curvature acts as a potential barrier whose height and width depends on the radius of curvature of the waveguide. The kink transmission, reflection and trapping...
Kink propagation and trapping in a two dimensional curved sine-Gordon system
Sørensen, Mads Peter
The sine-Gordon equation is one of the three classical nonlinear partial differential equations possessing soliton solutions in the case of one spatial dimension. Extending the sine-Gordon equation to two spatial dimensions is relevant for applications to the dynamics of large area Josephson...... to investigate how kink shaped solitons of the sine-Gordon equation propagate through the bent section. We have found that the region with finite curvature acts as a potential barrier whose height and width depends on the radius of curvature of the waveguide. The kink transmission, reflection and trapping...
2012 MICROBIAL STRESS RESPONSE GORDON RESEARCH CONFERENCE, JULY 20-25, 2012
Timothy Donohue
2012-07-25
The Gordon Research Conference on MICROBIAL STRESS RESPONSE was held at Mount Holyoke College, South Hadley, Massachusetts, July 15-20, 2012. The Conference was well-attended with 180 participants. The 2012 Microbial Stress Responses Gordon Research Conference will provide a forum for the open reporting of recent discoveries on the diverse mechanisms employed by microbes to respond to stress. Approaches range from analysis at the molecular level (how are signals perceived and transmitted to change gene expression or function) to cellular and microbial community responses. Gordon Research Conferences does not permit publication of meeting proceedings.
Relativistic quantum effects of confining potentials on the Klein-Gordon oscillator
Vitória, R. L. L.; Bakke, K.
2016-02-01
The behaviour of the Klein-Gordon oscillator under the influence of linear and Coulomb-type potentials is investigated. The introduction of the scalar potentials is made by modifying the mass term of the Klein-Gordon equation, then, by searching for relativistic bound states, a particular quantum effect can be observed: a dependence of the angular frequency of the Klein-Gordon oscillator on the quantum numbers associated with the radial modes and the angular momentum. As an example, we analyse the angular frequency and the energy level associated with the ground state of the relativistic system.
Eight lectures on theoretical physics
Planck, Max
1997-01-01
In 1909 the great German physicist and Nobel Prize winner Max Planck (1858-1947) delivered a series of eight lectures at Columbia University giving a fascinating overview of the new state of physics, which he had played a crucial role in bringing about. The first, third, fifth, and sixth lectures present his account of the revolutionary developments occasioned when he first applied the quantum hypothesis to blackbody radiation. The reader is given an invaluable opportunity to witness Planck's thought processes both on the level of philosophical principles as well as their application to physi
Displacement ventilation in lecture halls
Egorov, Artem
2013-01-01
This thesis considers several important goals. The main purpose is to see how displacement ventilation sys-tem works in the lecture hall of M-building and compare obtained results with D2 and Indoor Climate Classi-fication. The second one is to analyze the function of the ventilation system. The last one is to realize when displacement ventilation is preferable to mixing ventilation. Analysis of the system was carried out with instruments from MUAS HVAC laboratory. In lecture hall were me...
TASI Lectures on Flavor Physics
Ligeti, Zoltan
2015-01-01
These notes overlap with lectures given at the TASI summer schools in 2014 and 2011, as well as at the European School of High Energy Physics in 2013. This is primarily an attempt at transcribing my hand-written notes, with emphasis on topics and ideas discussed in the lectures. It is not a comprehensive introduction or review of the field, nor does it include a complete list of references. I hope, however, that someone may find it useful to better understand the reasons for excitement about recent progress and future opportunities in flavor physics.
TASI Lectures on Flavor Physics
Ligeti, Zoltan
These notes overlap with lectures given at the TASI summer schools in 2014 and 2011, as well as at the European School of High Energy Physics in 2013. This is primarily an attempt at transcribing my handwritten notes, with emphasis on topics and ideas discussed in the lectures. It is not a comprehensive introduction or review of the field, nor does it include a complete list of references. I hope, however, that some may find it useful to better understand the reasons for excitement about recent progress and future opportunities in flavor physics.
Semiclassical correlation functions of Wilson loops and local vertex operators
Hernandez, Rafael
2012-01-01
We analyze correlation functions of Wilson loop observables and local vertex operators within the strong-coupling regime of the AdS/CFT correspondence. When the local operator corresponds to a light string state with finite conserved charges the correlation function can be evaluated in the semiclassical approximation of large string tension, where the contribution from the light vertex can be neglected. We consider the cases where the Wilson loops are described by two concentric surfaces and the local vertices are the superconformal chiral primary scalar or a singlet massive scalar operator.
Vector and Axial Currents in Wilson Chiral Perturbation Theory
Aoki, Sinya; Sharpe, Stephen R
2009-01-01
We reconsider the construction of the vector and axial-vector currents in Wilson Chiral Perturbation Theory (WChPT), the low-energy effective theory for lattice QCD with Wilson fermions. We discuss in detail the finite renormalization of the currents that has to be taken into account in order to properly match the currents. We explicitly show that imposing the chiral Ward identities on the currents does, in general, affect the axial-vector current at O(a). As an application of our results we compute the pion decay constant to one loop in the two flavor theory. Our result differs from previously published ones.
CT hypodensity on cerebral white matter in Wilson's disease
Laura B. Jardim
1991-06-01
Full Text Available Wilson's disease in an autosomal recessive disorder of copper metabolism where systemic manifestations are secondary to thei accumulation of copper in hepatic, nervous and other tissues. In CNS, the structural lesions most commonly found by CT scan are ventricular dilatation, cortical atrophy, basal ganglia hyperdensities, and brainstem and cerebellar atrophy. Degenerative changes of cerebral white matter seen on early anatomo-pathologic studies, but were almost never found on CT scan from recently described patients. We report a case of Wilson's disease with an unusually rapid deterioration where asymmetric low-densities in the subcortical white matter were disclosed by CT scan.
Face of the giant panda sign in Wilson disease
Sumit Chakraborty
2013-08-01
Full Text Available Wilson disease usually presents with neurologic or hepatic manifestations. Magnetic resonance imaging (MRI of the brain is very informative in diagnosiing of this disease, especially in patients with neurological features. High T2 signal intensity in the corpus striatum is the most commonly encountered MRI finding. The 'face of the giant panda' sign is seen on axial T2-weighted MRI, and results from abnormal signal intensities in the midbrain. Though uncommon, the sign is considered as the pathognomonic MRI sign of Wilson disease.
Morita duality and noncommutative Wilson loops in two dimensions
Cirafici, Michele; Griguolo, Luca; Seminara, Domenico; Szabo, Richard J.
2005-10-01
We describe a combinatorial approach to the analysis of the shape and orientation dependence of Wilson loop observables on two-dimensional noncommutative tori. Morita equivalence is used to map the computation of loop correlators onto the combinatorics of non-planar graphs. Several strong nonperturbative evidences of symmetry breaking under area-preserving diffeomorphisms are thereby presented. Analytic expressions for correlators of Wilson loops with infinite winding number are also derived and shown to agree with results from ordinary Yang-Mills theory.
Clinical presentation and mutations in Danish patients with Wilson disease
Møller, Lisbeth Birk; Horn, Nina; Jeppesen, Tina Dysgaard
2011-01-01
This study describes the clinical presentation and diagnosis in all Danish patients (49, 41 unrelated) with Wilson disease (WND). On the basis of the number of diagnosed patients from 1990-2008, the prevalence was estimated to be 1:49¿500. Among routinely used diagnostic tests, none were consiste......This study describes the clinical presentation and diagnosis in all Danish patients (49, 41 unrelated) with Wilson disease (WND). On the basis of the number of diagnosed patients from 1990-2008, the prevalence was estimated to be 1:49¿500. Among routinely used diagnostic tests, none were...
Clinical presentation and mutations in Danish patients with Wilson disease
Møller, Lisbeth Birk; Horn, Nina; Jeppesen, Tina Dysgaard
2011-01-01
This study describes the clinical presentation and diagnosis in all Danish patients (49, 41 unrelated) with Wilson disease (WND). On the basis of the number of diagnosed patients from 1990-2008, the prevalence was estimated to be 1:49 500. Among routinely used diagnostic tests, none were consiste......This study describes the clinical presentation and diagnosis in all Danish patients (49, 41 unrelated) with Wilson disease (WND). On the basis of the number of diagnosed patients from 1990-2008, the prevalence was estimated to be 1:49 500. Among routinely used diagnostic tests, none were...
Mowat-Wilson syndrome in a Moroccan consanguineous family
Ratbi Ilham
2007-01-01
Full Text Available Mowat-Wilson syndrome is a mental retardation-multiple congenital anomaly syndrome characterized by a typical facies, developmental delay, epilepsy, and variable congenital malformations, including Hirschsprung disease, urogenital anomalies, congenital heart disease, and agenesis of the corpus callosum. This disorder is sporadic and is caused by heterozygous mutations or deletions of the ZFHX1B gene located in the 2q22 region. We report here the first Moroccan patient, born to consanguineous parents, with Mowat-Wilson syndrome, due to a de novo, unreported mutation of the ZFHX1B gene.
Wilson's disease, Kayser and Fleischer's sign and Walshe's treatment.
McIntyre, N
1991-01-01
Wilson's disease is named after Kinnier Wilson (1878-1937), a famous British neurologist. It is an inherited condition, due to an excess of copper in the liver and brain. The mechanism is unknown, but the gene has been mapped to chromosome 13. The worldwide prevalence is about 30 per million. Patients present with liver disease and/or neuropsychiatric manifestations. Early diagnosis is crucial because there is an effective treatment. This treatment, usually with penicillamine, must be continued for life and without interruption. Liver transplantation may be lifesaving in patients with fulminant hepatitis, or with severe liver disease which is unresponsive to treatment.
Exact results for Wilson loops in orbifold ABJM theory
Ouyang, Hao; Zhang, Jia-ju
2015-01-01
We investigate the exact results for circular 1/4 and 1/2 BPS Wilson loops in the d=3 N=4 super Chern-Simons-matter theory that could be obtained by orbifolding Aharony-Bergman-Jafferis-Maldacena (ABJM) theory. In literature there is the partition function of the N=4 orbifold ABJM theory, and we re-derive it in a slightly different method. We calculate the vacuum expectation values of the circular 1/4 and 1/2 BPS Wilson loops in both the saddle point approach and Fermi gas approach, and the results are in accord to the gravity ones.
Videotaped Lectures in a Graduate Cytogenetics Course.
Phillips, R. L.; Jellen, E. N.
1994-01-01
Graduate students evaluated the use of videotape recordings of lectures on chromosome configurations in a cytogenetics course. Ninety-two percent of the students indicated that videotaping was worthwhile. Advantages for using the videotaped cytogenetics lectures are presented. (MDH)
H H Ortíz Álvarez
2012-12-01
Full Text Available In solving practical problems in science and engineering arises as a direct consequence differential equations that explains the dynamics of the phenomena.Finding exact solutions to this equations provides importan informationabout the behavior of physical systems. The Lie symmetry method allows tofind invariant solutions under certain groups of transformations for differentialequations.This method not very well known and used is of great importance inthe scientific community. By this approach it was possible to find several exactinvariant solutions for the Klein Gordon Equation uxx − utt = k(u. A particularcase, The Kolmogorov equation uxx − utt = k1u + k2un was considered.These equations appear in the study of relativistic and quantum physics. Thegeneral solutions found, could be used for future explorations on the study forother specific K(u functions. En la solución de problemas prácticos de las ciencias y la ingeniería surgen como consecuencia directa ecuaciones diferenciales que dan razón de la dinámica de los fenómenos. El encontrar soluciones exactas a estas ecuaciones proporciona información importante sobre el comportamiento de sistemas físicos. El método de las simetrías de Lie permite encontrar soluciones invariantes bajo ciertos grupos de transformaciones para ecuaciones diferenciales. Mediante este método fue posible encontrar familias de soluciones exactas invariantes para la ecuación de Klein Gordon uxx- utt = k(u: En particular, se consideró la ecuación de Kolmogorov uxx - utt = k1u + k2u n. Estas ecuaciones aparecen en el estudio de la física relativista y cuántica. Las soluciones generales encontradas podrían emplearse en futuros desarrollos en el estudio para otro tipo de funciones k(u.
Rapidity evolution of Wilson lines at the next-to-leading order
Balitsky, Ian [JLAB, Old Dominion U.; Chirilli, Giovanni [LBL
2013-12-01
At high energies particles move very fast so the proper degrees of freedom for the fast gluons moving along the straight lines are Wilson-line operators - infinite gauge factors ordered along the line. In the framework of operator expansion in Wilson lines the energy dependence of the amplitudes is determined by the rapidity evolution of Wilson lines. We present the next-to-leading order hierarchy of the evolution equations for Wilson-line operators.
TASI Lectures on Jet Substructure
Shelton, Jessie
2013-01-01
Jet physics is a rich and rapidly evolving field, with many applications to physics in and beyond the Standard Model. These notes, based on lectures delivered at the June 2012 Theoretical Advanced Study Institute, provide an introduction to jets at the Large Hadron Collider. Topics covered include sequential jet algorithms, jet shapes, jet grooming, and boosted Higgs and top tagging.
Koshiba, Tanaka give Nobel lectures
2002-01-01
Masatoshi Kosiba and Koichi Tanaka presented lectures in English on Sunday, touching on topics ranging from particle physics, to teamwork to commemorate their reception of this year's Nobel Prize for Physics and Chemistry. The two will receive their respective prizes in an awards ceremony scheduled for Tuesday (1 page).
Six Lectures on Commutative Algebra
Elias, J; Miro-Roig, Rosa Maria; Zarzuela, Santiago
2009-01-01
Interest in commutative algebra has surged over the years. In order to survey and highlight the developments in this rapidly expanding field, the Centre de Recerca Matematica in Bellaterra organized a ten-days Summer School on Commutative Algebra in 1996. This title offers a synthesis of the lectures presented at the Summer School
Applied Fluid Mechanics. Lecture Notes.
Gregg, Newton D.
This set of lecture notes is used as a supplemental text for the teaching of fluid dynamics, as one component of a thermodynamics course for engineering technologists. The major text for the course covered basic fluids concepts such as pressure, mass flow, and specific weight. The objective of this document was to present additional fluids…
TASI lectures on complex structures
Denef, Frederik
2011-01-01
These lecture notes give an introduction to a number of ideas and methods that have been useful in the study of complex systems ranging from spin glasses to D-branes on Calabi-Yau manifolds. Topics include the replica formalism, Parisi's solution of the Sherrington-Kirkpatrick model, overlap order parameters, supersymmetric quantum mechanics, D-brane landscapes and their black hole duals.
TASI Lectures on Complex Structures
Denef, Frederik
2012-11-01
These lecture notes give an introduction to a number of ideas and methods that have been useful in the study of complex systems ranging from spin glasses to D-branes on Calabi-Yau manifolds. Topics include the replica formalism, Parisi's solution of the Sherrington-Kirkpatrick model, overlap order parameters, supersymmetric quantum mechanics, D-brane landscapes and their black hole duals.
Applied Fluid Mechanics. Lecture Notes.
Gregg, Newton D.
This set of lecture notes is used as a supplemental text for the teaching of fluid dynamics, as one component of a thermodynamics course for engineering technologists. The major text for the course covered basic fluids concepts such as pressure, mass flow, and specific weight. The objective of this document was to present additional fluids…
Embedding Laboratory Experience in Lectures
Morgan, James R.; Barroso, Luciana R.; Simpson, Nancy
2009-01-01
Demonstrations can be very effective at enhancing student learning and represent a mechanism for embedding laboratory experiences within a classroom setting. A key component to an effective demonstration is active student engagement throughout the entire process, leading to a guided laboratory experience in a lecture setting. Students are involved…
Darboux coordinates for periodic solutions of the sinh-Gordon equation
Knopf, Markus
2016-12-01
We study the space of periodic solutions of the elliptic sinh-Gordon equation by means of spectral data consisting of a Riemann surface Y and a divisor D and prove the existence of certain Darboux coordinates.
Sine-Gordon solitons in networks: Scattering and transmission at vertices
Sobirov, Zarif; Babajanov, Doniyor; Matrasulov, Davron; Nakamura, Katsuhiro; Uecker, Hannes
2016-09-01
We consider the sine-Gordon equation on metric graphs with simple topologies and derive vertex boundary conditions from the fundamental conservation laws together with successive space-derivatives of sine-Gordon equation. We analytically obtain traveling-wave solutions in the form of standard sine-Gordon solitons such as kinks and antikinks for star and tree graphs. We show that for this case the sine-Gordon equation becomes completely integrable just as in case of a simple 1D chain. This simple analysis provides a cornerstone for the numerical solution of the general case, including a quantification of the vertex scattering. Applications of the obtained results to Josephson junction networks and DNA double helix are discussed.
THE DYNAMICS OF SINE-GORDON SYSTEM WITH DIRICHLET BOUNDARY CONDITION
Liu Yingdong; Li Zhengyuan
2000-01-01
We prove the existence of the global attractor of Sine-Gordon system with Dirichlet boundary condition and show the attractor is the unique steady state when the damping constant and the diffusion constant are sufficiently large.
Gordon Brown. Raudne minister istub peaministri toolile / Jürgen Tamme
Tamme, Jürgen
2007-01-01
Ilmunud ka: Postimees : na russkom jazõke 29. juuni lk. 8. Suurbritannia valitsuse rahandusministri Gordon Browni saamisest Tööpartei esimeheks ja peaministriks, tema elukäigust, haridusteest ning poliitikukarjäärist
Exact Solution of Klein-Gordon Equation by Asymptotic Iteration Method
Eser Ol(g)ar
2008-01-01
Using the asymptotic iteration method (AIM) we obtain the spectrum of the Klein-Gordon equation for some choices of scalar and vector potentials. In particular, it is shown that the AIM exactly reproduces the spectrum of some solvable potentials.
Spacetimes with a separable Klein-Gordon equation in higher dimensions
Kolar, Ivan
2015-01-01
We study spacetimes that lead to a separable Klein-Gordon equation in a general dimension. We introduce an ansatz for the metric in higher dimensions motivated by analogical work by Carter in four dimensions and find solutions of the Klein-Gordon equation. For such a metric we solve the Einstein equations and regain the Kerr-NUT-(A)dS spacetime as one of our results. Other solutions lead to the Einstein-K\\"ahler metric of a Euclidean signature. Next we investigate a warped geometry of two Klein-Gordon separable spaces with a properly chosen warped factor. We show that the resulting metric leads also to a separable Klein--Gordon equation and we find the corresponding solutions. Finally, we solve the Einstein equations for the warped geometry and obtain new solutions.
Exact solution of the Klein Gordon equation in the presence of a minimal length
Jana, T K
2009-01-01
We obtain exact solutions of the (1+1) dimensional Klein Gordon equation with linear vector and scalar potentials in the presence of a minimal length. Algebraic approach to the problem has also been studied.
Gordon Brown. Raudne minister istub peaministri toolile / Jürgen Tamme
Tamme, Jürgen
2007-01-01
Ilmunud ka: Postimees : na russkom jazõke 29. juuni lk. 8. Suurbritannia valitsuse rahandusministri Gordon Browni saamisest Tööpartei esimeheks ja peaministriks, tema elukäigust, haridusteest ning poliitikukarjäärist
College Students' Perception of Lecturers Using Humor.
Tamborini, Ron; Zillmann, Dolf
1981-01-01
Audio-taped lectures by male or female professors were produced in four versions: no humor; sexual humor; other-disparaging humor; and self-disparaging humor. Male and female students rated lecturers' intelligence and appeal. Intelligence ratings were unaffected by humor variations, but significant lecturer-student sex interactions were found on…
Interactive Lecture Discourse for University EFL Students
Morell, Teresa
2004-01-01
Interactive lectures play an important role in improving comprehension and in enhancing communicative competence in the English language for EFL university students taking content lecture courses. This article considers the interactive discourse in lectures of the English Studies Department at the University of Alicante, Spain. It describes an…
Clickers and Formative Feedback at University Lectures
Egelandsdal, Kjetil; Krumsvik, Rune Johan
2017-01-01
Lecturing is often criticized for being a monological and student passive way of teaching. However, digital technology such as Student Response Systems (SRS) can be used to reconstruct the traditional lecturing format. During a series of five two-hour lectures in "qualitative methods" for first year psychology students, we used SRS to…
Chakraborty, Debananda
2011-01-01
We consider the Klein-Gordon and sine-Gordon type equations with a point-like potential, which describes the wave phenomenon in disordered media with a defect. The singular potential term yields a critical phenomenon--that is, the solution behavior around the critical parameter value bifurcates into two extreme cases. Pinpointing the critical value with arbitrary accuracy is even more challenging. In this work, we adopt the generalized polynomial chaos (gPC) method to determine the critical values and the mean solutions around such values. First, we consider the critical value associated with the strength of the singular potential for the Klein-Gordon equation. We expand the solution in the random variable associated with the parameter. The obtained partial differential equations are solved using the Chebyshev collocation method. Due to the existence of the singularity, the Gibbs phenomenon appears in the solution, yielding a slow convergence of the numerically computed critical value. To deal with the singul...
Localization of the Wilson's disease protein in human liver
Schaefer, M; Roelofsen, H; Wolters, H; Hofmann, WJ; Muller, M; Kuipers, F; Stremmel, W; Vonk, RJ
1999-01-01
Background & Aims: Wilson's disease is an autosomal-recessive disorder of copper metabolism that results from the absence or dysfunction of a copper-transporting P-type adenosine triphosphatase that leads to impaired biliary copper excretion and disturbed holoceruloplasmin synthesis, To gain further
Large-N string tension from rectangular Wilson loops
Lohmayer, Robert
2012-01-01
In pure SU(N) gauge theory in four dimensions, we determine the string tension at large N from smeared rectangular Wilson loops on the lattice. We learn how well loops of sizes barely on the strong-coupling side of the large-N transition in their eigenvalue distribution can be described by effective string theory.
Finite Temperature Phase Diagramm of QCD with improved Wilson fermions
Karsch, Frithjof; Oevers, M; Schmidt, P
1998-01-01
We present first results of a study of two flavour QCD with Wilson fermions at finite temperature. We have used tree level Symanzik improvement in both the gauge and fermion part of the action. In a first step we explore the phase diagramm on an $8^3 \\times 4$ lattice, with particular emphasis on checking Aoki's conjecture with an improved action.
Alagille Syndrome and Wilson Disease in Siblings: A Diagnostic Conundrum
Meghan Amson
2012-01-01
Full Text Available The authors describe two siblings, each with a different, rare genetic condition that affects liver function. The index case, the 18-year-old asymptomatic brother of a young man recently diagnosed with Wilson disease, presented for Wilson disease screening and was also found to have abnormal liver function suggestive of cholestasis. However, ceruloplasmin level, 24 h urine copper concentration and liver synthetic function were normal. Further hepatic investigations and genetic mutation analysis were performed, ultimately leading to a diagnosis of Alagille syndrome. He was treated with ursodiol, which resulted in normalization of his liver function tests. Subsequently, he was found to be a carrier for a mutation in the Wilson disease gene, ATP7B. In the present report, the potential implications of being a heterozygote for Wilson disease in the context of Alagille syndrome are discussed. Also stressed is that care must be exercised by the clinician when diagnosing family members who may present with two different disorders closely mimicking one another.
Elevated copper impairs hepatic nuclear receptor function in Wilson's disease
Wilson's disease (WD) is an autosomal recessive disorder that results in accumulation of copper in the liver as a consequence of mutations in the gene encoding the copper-transporting P-type ATPase (ATP7B). WD is a chronic liver disorder, and individuals with the disease present with a variety of co...
Null Zig-Zag Wilson Loops in N=4 SYM
Xie, Zhifeng
2009-01-01
In planar ${\\cal N}=4$ supersymmetric Yang-Mills theory we have studied supersymmetric Wilson loops composed of a large number of light-like segments, i.e., null zig-zags. These contours oscillate around smooth underlying spacelike paths. At one-loop in perturbation theory we have compared the finite part of the expectation value of null zig-zags to the finite part of the expectation value of non-scalar-coupled Wilson loops whose contours are the underlying smooth spacelike paths. In arXiv:0710.1060 [hep-th] it was argued that these quantities are equal for the case of a rectangular Wilson loop. Here we present a modest extension of this result to zig-zags of circular shape and zig-zags following non-parallel, disconnected line segments and show analytically that the one-loop finite part is indeed that given by the smooth spacelike Wilson loop without coupling to scalars which the zig-zag contour approximates. We make some comments regarding the generalization to arbitrary shapes.
Null Zig-Zag Wilson Loops in {N}=4 Sym
Xie, Zhifeng
In planar {N}=4 supersymmetric Yang-Mills theory we have studied one kind of (locally) BPS Wilson loops composed of a large number of light-like segments, i.e. null zig-zags. These contours oscillate around smooth underlying spacelike paths. At one-loop in perturbation theory, we have compared the finite part of the expectation value of null zig-zags to the finite part of the expectation value of non-scalar-coupled Wilson loops whose contours are the underlying smooth spacelike paths. In arXiv:0710.1060 [hep-th] it was argued that these quantities are equal for the case of a rectangular Wilson loop. Here we present a modest extension of this result to zig-zags of circular shape and zig-zags following non-parallel, disconnected line segments and show analytically that the one-loop finite part is indeed that given by the smooth spacelike Wilson loop without coupling to scalars which the zig-zag contour approximates. We make some comments regarding the generalization to arbitrary shapes.
Municipal Broadband in Wilson, North Carolina: A Study
O'Boyle, Timothy
2012-01-01
Relatively little empirical attention has been paid to the political economy of publicly-retailed fiber-optic broadband internet service. To address this gap in the literature, this dissertation examines the history, dynamics and trends in the municipal broadband movement. In specific, Wilson, North Carolina's Greenlight service is examined in…
Holographic Wilson loops in anisotropic quark-gluon plasma.
Ageev, Dmitry
2016-10-01
The nonequilibrium properties of the anisotropic quark-gluon plasma are condidered from the holographic viewpoint. Lifshitz-like solution is considered as a holographic dual of anisotropic QGP. The black brane formation in such background is considered as a thermalization in dual theory. As a probe of thermalization we consider rectangular spatial Wilson loops with different orientation.
Holographic Wilson loops in anisotropic quark-gluon plasma.
Ageev Dmitry
2016-01-01
Full Text Available The nonequilibrium properties of the anisotropic quark-gluon plasma are condidered from the holographic viewpoint. Lifshitz-like solution is considered as a holographic dual of anisotropic QGP. The black brane formation in such background is considered as a thermalization in dual theory. As a probe of thermalization we consider rectangular spatial Wilson loops with different orientation.
The Non-Abelian Exponentiation theorem for multiple Wilson lines
Gardi, Einan; White, Chris D
2013-01-01
We study the structure of soft gluon corrections to multi-leg scattering amplitudes in a non-Abelian gauge theory by analysing the corresponding product of semi-infinite Wilson lines. We prove that diagrams exponentiate such that the colour factors in the exponent are fully connected. This completes the generalisation of the non-Abelian exponentiation theorem, previously proven in the case of a Wilson loop, to the case of multiple Wilson lines in arbitrary representations of the colour group. Our proof is based on the replica trick in conjunction with a new formalism where multiple emissions from a Wilson line are described by effective vertices, each having a connected colour factor. The exponent consists of connected graphs made out of these vertices. We show that this readily provides a general colour basis for webs. We further discuss the kinematic combinations that accompany each connected colour factor, and explicitly catalogue all three-loop examples, as necessary for a direct computation of the soft a...
Feynman graph solution to Wilson's exact renormalization group
Sonoda, H
2003-01-01
We introduce a new prescription for renormalizing Feynman diagrams. The prescription is similar to BPHZ, but it is mass independent, and works in the massless limit as the MS scheme with dimensional regularization. The prescription gives a diagrammatic solution to Wilson's exact renormalization group differential equation.
The non-Abelian exponentiation theorem for multiple Wilson lines
Gardi, Einan; Smillie, Jennifer M.; White, Chris D.
2013-06-01
We study the structure of soft gluon corrections to multi-leg scattering amplitudes in a non-Abelian gauge theory by analysing the corresponding product of semi-infinite Wilson lines. We prove that diagrams exponentiate such that the colour factors in the exponent are fully connected. This completes the generalisation of the non-Abelian exponentiation theorem, previously proven in the case of a Wilson loop, to the case of multiple Wilson lines in arbitrary representations of the colour group. Our proof is based on the replica trick in conjunction with a new formalism where multiple emissions from a Wilson line are described by effective vertices, each having a connected colour factor. The exponent consists of connected graphs made out of these vertices. We show that this readily provides a general colour basis for webs. We further discuss the kinematic combinations that accompany each connected colour factor, and explicitly catalogue all three-loop examples, as necessary for a direct computation of the soft anomalous dimension at this order.
An interview with Steve Wilson. Interview by Kathryn Senior.
Wilson, Steve
2010-05-01
Stephen Wilson is Professor of Developmental Genetics at University College, London, UK. He was recently awarded the Remedios Caro Almela Prize for Research in Developmental Neurobiology. We interviewed Steve to find out about how he started on the road to developmental biology research, how he got interested in the brain, his achievements and future challenges.
Proteomic investigation of whole saliva in Wilson's disease.
Cabras, Tiziana; Sanna, Monica; Manconi, Barbara; Fanni, Daniela; Demelia, Luigi; Sorbello, Orazio; Iavarone, Federica; Castagnola, Massimo; Faa, Gavino; Messana, Irene
2015-10-14
Wilson's disease is a rare inherited disorder of copper metabolism, manifesting hepatic, neurological and psychiatric symptoms. Early diagnosis is often unfeasible and a unique diagnostic test is currently inapplicable. We performed the qualitative/quantitative characterization of the salivary proteome/peptidome of 32 Wilson's disease patients by an integrated top-down/bottom-up approach. Patients exhibited significant higher levels of S100A9 and S100A8 proteoforms, and their oxidized forms with respect to controls. Oxidation occurred on methionine and tryptophan residues, and on the unique cysteine residue, in position 42 in S100A8, and 3 in S100A9, that generated glutathionylated, cysteinylated, sulfinic, sulfonic, and disulfide dimeric forms. Wilson's disease patient saliva showed high levels of two new fragments of the polymeric immunoglobulin receptor, and of α-defensins 2 and 4. Overall, the salivary proteome of Wilson's disease patients reflected oxidative stress and inflammatory conditions characteristic of the pathology, highlighting differences that could be useful clues of disease exacerbation.
Supersymmetric Wilson Loops and Super Non-Abelian Stokes Theorem
Karp, R L; Karp, Robert L.; Mansouri, Freydoon
2000-01-01
We generalize the standard product integral formalism to incorporateGrassmann valued matrices and show that the resulting supersymmetric productintegrals provide a natural framework for describing supersymmetric Wilsonlines and Wilson loops. We use this formalism to establish the supersymmetricversion of the non-Abelian Stokes Theorem.
Necessary and Sufficient Conditions for Expansions of Wilson Type
Kun Chuan WANG
2008-01-01
We consider expansions of the type arising from Wilson bases.We characterize such expansions for L2(R).As an application,we see that such an expansion must be orthonormal,in contrast to the case of wavelet expansions generated by translations and dilation.
The Wilson loop in the Gaussian Unitary Ensemble
Gurau, Razvan
2016-01-01
Using the supersymmetric formalism we compute exactly at finite $N$ the expectation of the Wilson loop in the Gaussian Unitary Ensemble and derive an exact formula for the spectral density at finite $N$. We obtain the same result by a second method relying on enumerative combinatorics and show that it leads to a novel proof of the Harer-Zagier series formula.
P wave dispersion is prolonged in patients with Wilson's disease
无
2008-01-01
AIM: To investigate the P wave dispersion as a noninvasive marker of intra-atrial conduction disturbances in patients with Wilson's disease. METHODS: We compared Wilson's disease patients (n=18) with age matched healthy subjects (n=15) as controls. The diagnosis was based on clinical symptoms, laboratory tests (ceruloplasmin, urinary and hepatic copper concentrations). P wave dispersion, a measurement of the heterogeneity of atrial depolarization, was measured as the difference between the duration of the longest and the shortest P-waves in 12 lead electrocardiography. RESULTS: All the patients were asymptomatic on cardiological examination and have sinusal rhythm in electrocardiography. Left ventricular and left atrial diameters, left ventricular ejection fraction and left ventricular mass index were similar in both groups. The Wilson's disease patients had a significantly higher P wave dispersion compared with the controls (44.7+5.8vs 25.7±2.5,P＜0.01＝. CONCLUSION: There was an increase in P wave dispersion in cardiologically asymptomatic Wilson's disease patients which probably represents an early stage of cardiac involvement.
Wilson lines and gauge invariant off-shell amplitudes
Kotko, Piotr
2014-01-01
We study matrix elements of Fourier-transformed straight infinite Wilson lines as a way to calculate gauge invariant tree-level amplitudes with off-shell gluons. The off-shell gluons are assigned "polarization vectors" which (in the Feynman gauge) are transverse to their off-shell momenta and define the direction of the corresponding Wilson line operators. The infinite Wilson lines are first regularized to prove the correctness of the method. We have implemented the method in a computer FORM program that can calculate gluonic matrix elements of Wilson line operators automatically. In addition we formulate the Feynman rules that are convenient in certain applications, e.g. proving the Ward identities. Using both the program and the Feynman rules we calculate a few examples, in particular the matrix elements corresponding to gauge invariant $g^{*}g^{*}g^{*}g$ and $g^{*}g^{*}g^{*}g^{*}g$ processes. An immediate application of the approach is in the high energy scattering, as in a special kinematic setup our resu...
Integrability and Wilson loops: the wavy line contour
Cagnazzo, A
2013-01-01
The Wilson loop with a wavy line contour is studied using integrable methods. The auxiliary problem is solved and the Lax operator is built to first order in perturbation theory, considering a small perturbation from the straight line. Finally the spectral curve of the solution is considered.
String theory duals of Wilson loops from Higgsing
Lietti, Marco; Mauri, Andrea; Penati, Silvia; Zhang, Jia-ju
2017-08-01
For three-dimensional ABJ(M) theories and N=4 Chern-Simons-matter quiver theories, we construct two sets of 1/2 BPS Wilson loop operators by applying the Higgsing procedure along independent directions of the moduli space, and choosing different massive modes. For theories whose dual M-theory description is known, we also determine the corresponding spectrum of 1/2 BPS M2-brane solutions. We identify the supercharges in M-theory and field theory, as well as the supercharges preserved by M2-/anti-M2-branes and 1/2 BPS Wilson loops. In particular, in N=4 orbifold ABJM theory we find pairs of different 1/2 BPS Wilson loops that preserve exactly the same set of supercharges. In field theory they arise by Higgsing with the choice of either particles or antiparticles, whereas in the dual description they correspond to a pair of M2-/anti-M2-branes localized at different positions in the compact space. This result enlightens the origin of classical Wilson loop degeneracy in these theories, already discussed in arXiv:1506.07614. A discussion on possible scenarios that emerge by comparison with localization results is included.
Wilson loops and topological phases in closed string theory
Cartas-Fuentevilla, R
2004-01-01
Using covariant phase space formulations for the natural topological invariants associated with the world-surface in closed string theory, we find that certain Wilson loops defined on the world-surface and that preserve topological invariance, correspond to wave functionals for the vacuum state with zero energy. The differences and similarities with the 2-dimensional QED proposed by Schwinger early are discussed.
Cardiac arrhythmia in Wilson's disease: An oversighted and overlooked entity!
Bajaj, Bhupender Kumar; Wadhwa, Ankur; Singh, Richa; Gupta, Saurabh
2016-01-01
Wilson's disease is a multisystem disorder which manifests with hepatic, neurological, musculoskeletal, hematological, renal, and cardiac symptoms. The hepatic and neurological manifestations often overshadow the other system involvement including cardiac symptoms and signs, which may prove fatal. We report a case of a young female who presented with progressive parkinsonian features and dystonia for around 4 months followed 2 months later by the complaint of episodes of light-headedness. She was diagnosed to have Wilson's disease based on the presence of Kayser–Fleischer ring and laboratory parameters of copper metabolism. Electrocardiography of the patient incidentally revealed 2nd degree Mobitz type-1 atrioventricular block explaining her episodes of light-headedness. She was started on penicillamine and trihexyphenidyl. The heart block improved spontaneously. Cardiac autonomic function tests including blood pressure response to standing and heart rate response to standing were observed to be normal. We review the literature on cardiac manifestations of Wilson's disease and emphasize that patients with Wilson's disease should be assessed for cardiac arrhythmia and cardiac dysfunction as these may have therapeutic and prognostic implications. PMID:27695244
Partition function for the eigenvalues of the Wilson line
Gocksch, A
1993-01-01
In a gauge theory at nonzero temperature the eigenvalues of the Wilson line form a set of gauge invariant observables. By constructing the corresponding partition function for the phases of these eigenvalues, we prove that the trivial vacuum, where the phases vanish, is a minimum of the free energy.
Imaginary Parts and Discontinuities of Wilson Line Correlators
Laenen, Eric; Larsen, Kasper J.; Rietkerk, Robbert
2015-01-01
We introduce a notion of position-space cuts of eikonal diagrams, the set of diagrams appearing in the perturbative expansion of the correlator of a set of straight semi-infinite Wilson lines. The cuts are applied directly to the position-space representation of any such diagramand compute its
Municipal Broadband in Wilson, North Carolina: A Study
O'Boyle, Timothy
2012-01-01
Relatively little empirical attention has been paid to the political economy of publicly-retailed fiber-optic broadband internet service. To address this gap in the literature, this dissertation examines the history, dynamics and trends in the municipal broadband movement. In specific, Wilson, North Carolina's Greenlight service is examined in…
Participation of Negroes in Woodrow Wilson Fellowship Programs.
Rosenhaupt, Hans
Woodrow Wilson Fellowships were awarded to 107 graduates from Negro colleges between 1958 and 1962 but to only 69 graduates during the following 5 years. The realization that this drop may have been caused by increased recruiting of Negro students by northern colleges and concern about the small number of black students at the graduate level led…
Woodrow Wilson National Fellowship Foundation. Report for 1971-1972.
Woodrow Wilson National Fellowship Foundation, Princeton, NJ.
This document presents the annual report for the Woodrow Wilson National Fellowship Foundation for 1971-72. Included in the report are a listing of the Board of Trustees; a listing of the officers and staff of the Foundation; descriptions of the First Year Fellowship Program, the Dissertation Fellowships, the Internship Programs, the Martin Luther…
Scattering amplitudes and Wilson loops in twistor space
Adamo, Tim; Mason, Lionel [Mathematical Institute, 24-29 St. Giles' , Oxford OX1 3LB (United Kingdom); Bullimore, Mathew [Rudolf Peierls Centre for Theoretical Physics, 1 Keble Road, Oxford OX1 3NP (United Kingdom); Skinner, David, E-mail: adamo@maths.ox.ac.uk [Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario N2 L 2Y5 (Canada)
2011-11-11
This paper reviews the recent progress in twistor approaches to Wilson loops, amplitudes and their duality for N=4 super-Yang-Mills. Wilson loops and amplitudes are derived from first principles using the twistor action for maximally supersymmetric Yang-Mills theory. We start by deriving the MHV rules for gauge theory amplitudes from the twistor action in an axial gauge in twistor space, and show that this gives rise to the original momentum space version given by Cachazo, Svrcek and Witten. We then go on to obtain from these the construction of the momentum twistor space loop integrand using (planar) MHV rules and show how it arises as the expectation value of a holomorphic Wilson loop in twistor space. We explain the connection between the holomorphic Wilson loop and certain light-cone limits of correlation functions. We give a brief review of other ideas in connection with amplitudes in twistor space: twistor-strings, recursion in twistor space, the Grassmannian residue formula for leading singularities and amplitudes as polytopes. This paper is an invited review for a special issue of Journal of Physics A: Mathematical and Theoretical devoted to 'Scattering amplitudes in gauge theories'. (review)
2013-12-06
... National Park Service Moose-Wilson Corridor Comprehensive Management Plan, Environmental Impact Statement... the Moose-Wilson Corridor, Grand Teton National Park, Wyoming. DATES: The National Park Service will...://parkplanning.nps.gov/MooseWilson , at the Grand Teton National Park Headquarters Building, 1 Teton Park...
On classical solutions of the relativistic Vlasov-Klein-Gordon system
Michael Kunzinger
2005-01-01
Full Text Available We consider a collisionless ensemble of classical particles coupled with a Klein-Gordon field. For the resulting nonlinear system of partial differential equations, the relativistic Vlasov-Klein-Gordon system, we prove local-in-time existence of classical solutions and a continuation criterion which says that a solution can blow up only if the particle momenta become large. We also show that classical solutions are global in time in the one-dimensional case.
Pi-kinks in a parametrically driven sine-Gordon chain
Kivshar, Yuri S.; Grønbech-Jensen, Niels; Samuelsen, Mogens Rugholm
1992-01-01
We consider the sine-Gordon chain driven by a high-frequency parametric force in the presence of loss. Using an analytical approach based on the method of averaging in fast oscillations, we predict that such a parametric force may support propagation of π kinks, which are unstable in the standard...... sine-Gordon model. The steady-state velocity of the π kinks is calculated, and the analytical results are in good agreement with direct numerical simulations....
Davidson, A.; Pedersen, Niels Falsig; Dueholm, B.
1985-01-01
We show some experimental results which suggest that total damping, including surface loss, plays a fundamental role in limiting the stability of high-velocity sine-Gordon solitons in real Josephson tunnel junctions.......We show some experimental results which suggest that total damping, including surface loss, plays a fundamental role in limiting the stability of high-velocity sine-Gordon solitons in real Josephson tunnel junctions....
郭柏灵; 苗长兴
1995-01-01
The final value problem for the classical coupled Klein-Gordon-Schrodinger equations is studied in . This leads to the construction of the modified wave operator Ω, for certain scattered data. When initial functions belong to (Ω) which denotes the range domain of Ω, the global existence and asymptotic behavior of solutions of Cauchy problem tor the coupled Klein-Gordon-Schrodinger equations are proved.
GLOBAL WELL-POSEDNESS FOR THE KLEIN-GORDON EQUATION BELOW THE ENERGY NORM
Miao Changxing; Zhang Bo; Fang Daoyuan
2004-01-01
We study global well-posedness below the energy norm of the Cauchy problem for the Klein-Gordon equation in Rn with n≥ 3. By means of Bourgain's method along with the endpoint Strichartz estimates of Keel and Tao, we prove the Hs-global well-posedness with s ＜ 1 of the Cauchy problem for the Klein-Gordon equation. This we do by establishing a series of nonlinear a priori estimates in the setting of Besov spaces.
2009 Plant Cell Walls Gordon Research Conference-August 2-7,2009
Debra Mohnen
2009-08-07
Plant cell walls are a complex cellular compartment essential for plant growth, development and response to biotic and abiotic stress and a major biological resource for meeting our future bioenergy and natural product needs. The goal of the 2009 Plant Cell Walls Gordon Research Conference is to summarize and critically evaluate the current level of understanding of the structure, synthesis and function of the whole plant extracellular matrix, including the polysaccharides, proteins, lignin and waxes that comprise the wall, and the enzymes and regulatory proteins that drive wall synthesis and modification. Innovative techniques to study how both primary and secondary wall polymers are formed and modified throughout plant growth will be emphasized, including rapid advances taking place in the use of anti-wall antibodies and carbohydrate binding proteins, comparative and evolutionary wall genomics, and the use of mutants and natural variants to understand and identify wall structure-function relationships. Discussions of essential research advances needed to push the field forward toward a systems biology approach will be highlighted. The meeting will include a commemorative lecture in honor of the career and accomplishments of the late Emeritus Professor Bruce A. Stone, a pioneer in wall research who contributed over 40 years of outstanding studies on plant cell wall structure, function, synthesis and remodeling including emphasis on plant cell wall beta-glucans and arabinogalactans. The dwindling supply of fossil fuels will not suffice to meet our future energy and industrial product needs. Plant biomass is the renewable resource that will fill a large part of the void left by vanishing fossil fuels. It is therefore critical that basic research scientists interact closely with industrial researchers to critically evaluate the current state of knowledge regarding how plant biomass, which is largely plant cell walls, is synthesized and utilized by the plant. A final