3,070 research outputs found
On unitary convex decompositions of vectors in a -algebra
No full textsummary:By exploiting his recent results, the author further investigates the extent to which variation in the coefficients of a unitary convex decomposition of a vector in a unital -algebra permits the vector decomposable as convex combination of fewer unitaries; certain -algebra results due to M. Rørdam have been extended to the general setting of -algebras
Electrophysiological analysis of dopamine cells from the Substantia Nigra Pars Compacta of circling rats
No full textMonetary Policy, Asset-price Bubbles and the Zero Lower Bound
No full textWe use a simple model of a closed economy to study the recommendations of monetary policy-makers attempting to respond optimally to an asset-price bubble whose stochastic properties they understand. We focus on the impact which the zero lower bound (ZLB) on nominal interest rates has on the recommendations of such policy-makers. For a given target inflation rate, we identify several different forms of ‘insurance’ which policy-makers could potentially take out against encountering the ZLB due to the future bursting of a bubble. Even with perfect knowledge of the bubble process, however, which of these will be optimal varies from one type of bubble to another and, for certain bubbles, from one period to the next. It is therefore difficult to draw general conclusions as to whether the ZLB should cause policy-makers to operate policy more tightly or loosely than otherwise, while a bubble is growing – even after abstracting from the informational difficulties they face in practice. We also examine the implications of the ZLB for policy-makers’ preferences as to their inflation target. Policy-makers who wish to avoid concerns about the ZLB should take care not to set too low a target, especially if the neutral real interest rate is low. Such policy-makers should also set a higher target inflation rate if the economy’s natural propensity to rebound from a shock to output is weak, or if output is relatively unresponsive to real interest rate settings.monetary policy; asset-price bubbles; zero lower bound
Erratum: Half-supersymmetric solutions in five-dimensional supergravity (Journal of High Energy Physics (2007) 12 (025))
No full text[No abstract available]Gutowski JB, 2007, J HIGH ENERGY PHYS11
Surjective isometries between unitary sets of unital JB∗-algebras
No full textWe would like to thank Prof. Lajos Molnár for encouraging us to explore this problem.
We are also indebted to the anonymous reviewer for several useful comments.
First and fifth authors partially supported by the Spanish Ministry of Science, Innovation and Universities (MICINN) and European Regional Development Fund project
no. PGC2018-093332-B-I00, Programa Operativo FEDER 2014-2020 and Consejería de
Economía y Conocimiento de la Junta de Andalucía grant numbers A-FQM-242-UGR18
and FQM375. First author partially supported by EPSRC (UK) project “Jordan Algebras, Finsler Geometry and Dynamics” ref. no. EP/R044228/1. Second author partially
supported by JSPS KAKENHI Grant Number JP 21J21512. Fourth author partially
supported by JSPS KAKENHI (Japan) Grant Number JP 20K03650.
* Funding for open access charge: Universidad de Granada / CBUAThis paper is, in a first stage, devoted to establishing a topological–algebraic characterization of the principal component, U0(M), of the set of unitary elements, U(M), in a unital JB⁎-algebra M. We arrive to the conclusion that, as in the case of unital C⁎-algebras, U0(M)=M1−1∩U(M)={Ue⋯Ue(1):n∈N,hj∈Msa∀1≤j≤n}={u∈U(M): there exists w∈U0(M) with ‖u−w‖<2} is analytically arcwise connected. Actually, U0(M) is the smallest quadratic subset of U(M) containing the set eiM. Our second goal is to provide a complete description of the surjective isometries between the principal components of two unital JB⁎-algebras M and N. Contrary to the case of unital C⁎-algebras, we shall deduce the existence of connected components in U(M) which are not isometric as metric spaces. We shall also establish necessary and sufficient conditions to guarantee that a surjective isometry Δ:U(M)→U(N) admits an extension to a surjective linear isometry between M and N, a conclusion which is not always true. Among the consequences it is proved that M and N are Jordan ⁎-isomorphic if, and only if, their principal components are isometric as metric spaces if, and only if, there exists a surjective isometry Δ:U(M)→U(N) mapping the unit of M to an element in U0(N). These results provide an extension to the setting of unital JB⁎-algebras of the results obtained by O. Hatori for unital C⁎-algebras.CBUAConsejería de Economía y Conocimiento de la Junta de Andalucía
A-FQM-242-UGR18, FQM375Ministerio de Ciencia, Innovación y UniversidadesEngineering and Physical Sciences Research Council
EP/R044228/1Universidad de GranadaMinisterio de Ciencia e InnovaciónJapan Society for the Promotion of Science JP 20K03650, JP 21J21512European Regional Development Fund
PGC2018-093332-B-I0
Modelling Inflation in Australia
No full textThis paper estimates a range of single-equation models of inflation for Australia. We find that traditional models, such as the expectations-augmented standard Phillips curve or mark-up models, outperform the more micro-founded New-Keynesian Phillips curve (NKPC) in explaining trimmed mean inflation, both in terms of in-sample fit and significance of coefficients. This in large part reflects the weak instruments problem in the estimation of the NKPC, and is partly corrected by including a direct measure of inflation expectations, but we still find that the unemployment rate or growth in marginal costs (unit labour cost and import prices) provides a better fit than either the output gap or level of real marginal costs. These traditional models also perform well in out-of-sample tests, relative to alternative models and some common benchmarks, with the standard Phillips curve clearly superior to these benchmarks on this test. As inflation has become better anchored and hence less variable, the magnitude of the errors of the single-equation models has declined, although the explanatory power (in terms of R-squared) has fallen together with this greater stability. We also investigate the empirical importance of some other variables that are commonly cited as determinants of inflation, and find little evidence that either commodity prices or the growth rate of money directly influence Australian underlying inflation.inflation; modelling
Letters exchanged in April and May 1972 between Lorenzo A. Richards and the New Process Company
No full textLetters exchanged in April and May 1972 between Lorenzo A. Richards and the New Process Company at Warren, Pennsylvania, regarding an offer to try some new shoes before purchase519874 RECEIPT FOR INSURED MAIL DOMESTIC-INTERNATIONAL ADDRESSED FOR DELIVERY AT (Post Office, State and Country) _gjg____y fo \u27: AIR POSTAGE j [~~| INSURANCE FEE SPEC. HANDLING L SPECIAL DOMES- f DELIVERY ONLY __. ADDRESSEE f ONLY RETURN RECEIPT (Except to Canada) 0 0, 30 i <4 5 ? FRAGILE LIQUID PERISHABLE n SENDER: Fill in name and address of addressee as shown on the package. NAME House No. and Street, Apt. N c ; or Box or R.D. No. (In care of), State, and ZIP Code COVERAGE-Postal insurance covers (l) the value of the article(s) at time of mailing, if lost or totally damaged, or (2) the cost of repairs. Coverage may not exceed the limit fixed for the insurance fee paid. Consult postmaster for details of insurance limits and coverage. FILING CLAIM-Bring this receipt or the wrapper of the parcel to any post office, station, or branch within one year from the date the parcel was mailed. Submit sales slips, receipted bills, if available, or repair estimates to substantiate your claim. U. S. GOVERNMENT PRINTING OFFICE : 1968 O - 284-525\u27 r\ew process company WARREN, PA.16365 Dear Customer: Thank you for your order. Demand, at an all-time high, has temporarily depleted our stock. New supplies are being obtained as quickly as possible, from which your order will be promptly shipped. If payment was included with it, our policy is to refund if shipment cannot be made within 21 days from the date the order is received. Thank you for your patience. H/U Sincerely, Vice-President, New Process Co YOUR ACCOUNT NUMBER Patriot U.S/Postage\u27 ^} ENCLOSE THIS CARD IF YOU WRITE US HR L A RICHARDS 4455 STH ST RIVERSIDE CA ^2501 DETACH HERE AND MAIL T0DAYL Dear Mr. Bichards: Within the next few days, I an going to send two pairs of these amazing new JB Shoes to jour Riverside address for a week\u27s Free Triall I\u27m sending them, Mr. Richards, because words, pictures and even the actual sample enclosed cannot begin to tell all you should know about these fine shoes! They are totally new and different from any you may now own! You must see, feel and actually wear them to appreciate their true value for they give you revolutionary new advantages ordinary Shoes never could • •• 1. Uppers are constructed of an amazing new man-made polymeric material that neither scuffs nor cracks like leather. Shoes stay soft, supple and need no "breaking-in" - feel like old favorites first time you wear them I 2. Mo more 400 Shoe-shines! Instead a damp cloth restores their permanently built-in finish to its full luster in just seconds! 3. Polyvinyl soles are waterproof and guaranteed to outwear uppers or you get new Shoes FHE1! 30 Shoes!.... yet can be yours for under 15.95 for the TWO pairs after your week\u27s trial! That\u27s an astonishingly low 30-look Shoes!!! I\u27m going to send yours in just a few daysl But of course I can\u27t send them until you tell me your size and the style and color Shoes jou prefer. The above non-transferable AIRMAIL reply card is in your name and for your exclusive use! It needs no stamp! Just a final word of caution... Demand for these fine Shoes at this low price is so great, we must limit this offer to selected segments of our mailing lists. This is the one and only offer I can send you this season, so please don\u27t miss out by waiting! Make a special effort to AIRMAIL your Free Trial order off to me TODAY, won\u27t you? Respectfully yours, u LB/B President npc NEW PROCESS COMPANY. WARREN, PENNSYLVANIA fycl4fb<m4, (^AZyLdif- GMct ZctMYMUf, 4Y4tCe A9/0 © NEW PROCESS CO. MOC-TOE OXFORD STRAP SLIP-ON In this world of miracles -a miracle new polymeric shoe material that gives thfe rich look of top grain leather at a fraction of the price and withput the costly care! Here\u27s moresshoe comfort than you\u27ve ever known-perfect fit, "slipper" feel, atnazing shape retentionand ultrai-comfort heel cushions. Won\u27t scuff like leather! Lustrous built-injpolish-just wipe to a shine. Waiter won\u27t faze them. Jet-molded polyvinyl sole and heel save shoe repair bills-are guaranteed toiout-wear uppers or you get newj shoes FREE- will not leave scum0 marks. In 5 great new styles tjhat look like 8 a pair! Hard to believe possible, isn\u27t it? Accept this offerj to wear-test them free and see for yourself! Free Walk-Test! We\u27ll gladly send two pairs of these new miracle shoes Tor week\u27s free "walk-test"! Then. after a week of testing-after you have plenty of chance to see how perfectly they fit, h ow comfortable they feel, if you can\u27t say they look like 30 Look Shoes for only -. ESTRAP A PAIR in lots of 2 pairs Look like rich top grain leather! Shed water; scuff resistant. Lustrous built-in shine. No polishing ever. Most comfortable shoes you ever wore! 5 handsome new styles in Brown or Black. TRY THEM FREE see other side
Flexible time–space network formulation and hybrid metaheuristic for conflict-free and energy-efficient path planning of automated guided vehicles
No full textOperations of Automated Guided Vehicles (AGVs) are desired to be more energy-efficient while maintaining high transport productivity, motivated by the green production requirements. This paper investigates a new energy-efficient planning problem for determining conflict-free paths of the AGVs in its transport roadmap. In this problem, the vehicle path and transport time in the roadmap are jointly optimized, based on a flexible time–space network (FTSN). We provide the mathematical problem formulation of the energy-efficient path planning problem. The resulting optimization problem is proved to be a non-convex mixed-integer nonlinear programming which is computationally intractable. We further propose a hybrid metaheuristic that integrates the genetic algorithm and estimation of the distribution algorithm to improve its computational efficiency. Numerical results show the effectiveness of the developed algorithm based on the FTSN framework, compared to the existing metaheuristics, the conventional path planning method, and a commercial solver. The proposed method has a wide application in improving energy use of material handling, providing a guiding significance on promoting cleaner production of flexible manufacturing systems.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Transport Engineering and Logistic
Decoupling of genome size and sequence divergence in a symbiotic bacterium
No full textAuthor Posting. © American Society for Microbiology, 2000. This article is posted here by permission of American Society for Microbiology for personal use, not for redistribution. The definitive version was published in Journal of Bacteriology 182 (2000): 3867-3869, doi:10.1128/JB.182.13.3867-3869.2000.In contrast to genome size variation in most bacterial taxa, the small genome size of Buchnera sp. was shown to be highly conserved across genetically diverse isolates (630 to 643 kb). This exceptional size conservation may reflect the inability of this obligate mutualist to acquire foreign DNA and reduced selection for genetic novelty within a static intracellular environment.Financial support was provided by a National Institute of Health
postdoctoral training grant to J.J.W. (Center for Insect Science, University
of Arizona) and a National Science Foundation grant (DEB-
9815413) to N.A.M
Vertical transmission of biosynthetic plasmids in aphid endosymbionts (Buchnera)
No full textAuthor Posting. © American Society for Microbiology, 2001. This article is posted here by permission of American Society for Microbiology for personal use, not for redistribution. The definitive version was published in Journal of Bacteriology 183 (2001): 785-790, doi:10.1128/JB.183.2.785-790.2001.This study tested for horizontal transfer of plasmids among Buchnera aphidicola strains associated with
ecologically and phylogenetically related aphid hosts (Uroleucon species). Phylogenetic congruence of Buchnera
plasmid (trpEG and leuABC) and chromosomal (dnaN and trpB) genes supports strictly vertical long-term transmission
of plasmids, which persist due to their contributions to host nutrition rather than capacity for infectious
transfer. Synonymous divergences indicate elevated mutation on plasmids relative to chromosomal genes.This work was supported by a National Institutes of Health postdoctoral
training grant in Molecular Insect Science (Center for Insect
Science, University of Arizona) to J.J.W. and a National Science Foundation
grant (DEB-9815413) to N.A.M
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