A New Micro Model of Exchange Rate Dynamics

We address the exchange rate determination puzzle by examining how information is aggregated in a dynamic general equilibrium (DGE) setting. Unlike other DGE macro models, which enrich either preference structures or production structures, our model enriches the information structure. The model departs from microstructure-style modeling by identifying the real activities where dispersed information originates, as well as the technology by which information is subsequently aggregated and impounded. Results relevant to the determination puzzle include: (1) persistent gaps between exchange rates and macro fundamentals, (2) excess volatility relative to macro fundamentals, (3) exchange rate movements without macro news, (4) little or no exchange rate movement when macro news occurs, and (5) a structural-economic rationale for why transaction flows perform well in accounting for monthly exchange rate changes, whereas macro variables perform poorly. Though past micro analysis has made progress on results (1) through (3), results (4) and (5) are new. Excess volatility arises in our model for a new reason: rational exchange rate errors feed back into the fundamentals that the exchange rate is trying to track.

Diffraction in QCD

This lecture presents a short review of the main features of diffractive processes and QCD inspired models. It includes the following topics: (1) Quantum mechanics of diffraction: general properties; (2) Color dipole description of diffraction; (3) Color transparency; (4) Soft diffraction in hard reactions: DIS, Drell-Yan, Higgs production; (5) Why Pomerons interact weakly; (6) Small gluonic spots in the proton; (7) Diffraction near the unitarity bound: the Goulianos-Schlein "puzzle"; (8) Diffraction on nuclei: diffractive Color Glass; (9) CGC and gluon shadowing.Comment: Based on the lecture given by B.K. at I LAWHEP, Porto Alegre, Brazil, December 1-3, 200

What the Future ‘Might’ Brings

This paper concerns a puzzle about the interaction of epistemic modals and future tense. In cases of predictable forgetfulness, speakers cannot describe their future states of mind with epistemic modals under future tense, but promising theories of epistemic modals do not predict this. In §1, I outline the puzzle. In §2, I argue that it undermines a very general approach to epistemic modals that draws a tight connection between epistemic modality and evidence. In §3, I defend the assumption that tense can indeed scope over epistemic modals. In §4, I outline a new way of determining the domain of quantification of epistemic modals: epistemic modals quantify over the worlds compatible with the information accumulated within a certain interval. Information loss can change which interval is relevant for determining the domain. In §5, I defend the view from some objections. In §6, I explore the connections between my view of epistemic modality and circumstantial modality

Multiple Dp-branes in Weak Background Fields

We find the terms in the nonabelian world-volume action of a system of many Dp-branes which describe the leading coupling to all type II supergravity background fields. These results are found by T-dualizing earlier results for D0-branes, which in turn were determined from calculations of the M(atrix) theory description of the supercurrent of 11D supergravity. Our results are compatible with earlier results on the supersymmetric Born-Infeld action for a single D-brane in a general background and with Tseytlin's symmetrized trace proposal for extending the abelian Born-Infeld action to a nonabelian theory. In the case p = 3, the operators we find on the D-brane world-volume are closely related to those which couple to supergravity fields in the AdS_5 * S^5 IIB supergravity background. This gives an explicit construction, including normalization, of some of the operators used in the celebrated AdS/CFT correspondence for 3-branes. We also discuss the S-duality of the action in the case p = 3, finding that the S-duality of the action determines how certain operators in the 4D N = 4 SYM theory transform under S-duality. These S-duality results give some new insight into the puzzle of the transverse 5-brane in M(atrix) theory.Comment: 35 pages, LaTe

SOLVING THE 106 YEARS OLD 3^k POINTS PROBLEM WITH THE CLOCKWISE-ALGORITHM

In this paper, we present the clockwise-algorithm that solves the extension in -dimensions of the infamous nine-dot problem, the well known two-dimensional thinking outside the box puzzle. We describe a general strategy that constructively produces minimum length covering trails, for any ∈ N−{0}, solving the NP-complete (3×3×⋯×3)-points problem inside a 3×3×⋯×3 hypercube. In particular, using our algorithm, we explicitly draw different covering trails of minimal length h() = (3^ − 1)/2, for = 3, 4, 5. Furthermore, we conjecture that, for every ≥ 1, it is possible to solve the 3^-points problem with h() lines starting from any of the 3^ nodes, except from the central one. Finally, we cover 3×3×3 points with a tree of size 12

Curing black hole singularities with local scale invariance

We show that Weyl-invariant dilaton gravity provides a description of black holes without classical spacetime singularities. Singularities appear due to ill-behaviour of gauge fixing conditions, one example being the gauge in which theory is classically equivalent to standard General Relativity. The main conclusions of our analysis are: (1) singularities signal a phase transition from broken to unbroken phase of Weyl symmetry, (2) instead of a singularity there is a "baby-universe" or a white hole inside a black hole, (3) in the baby universe scenario there is a critical mass after which reducing mass makes black hole larger as viewed by outside observers, (4) if a black hole could be connected with white hole through the "singularity", this would require breakdown of (classical) geometric description, (5) the singularity of Schwarzschild BH solution is non-generic and so it is dangerous to rely on it in deriving general results. Our results may have important consequences for resolving issues related to information-loss puzzle. The theory we use is basically a completion of General Relativity, containing neither additional physical excitations nor higher-derivative terms, but requires physical scalar field such as Higgs field of Standard Model. Though quantum effects are still crucial and may change the proposed classical picture, a position of building quantum theory around essentially regular classical solutions normally provides a much better starting point.Comment: 13 pages, 2 figures, v2: Improved explanations, restoration of Weyl symmetry emphasized. References added. v3: Misprints corrected, improved explanations, one new figure. References added. v4: improved explanations. Discussion on regularity of observables added. v5: improved presentation, additional examples added. Main results and conclusions unchanged. Matches published versio

Piecing together the puzzle of pictorial representation: How jigsaw puzzles index metacognitive development

Jigsaw puzzles are ubiquitous developmental toys in Western societies, used here to examine the development of metarepresentation. For jigsaw puzzles this entails understanding that individual pieces, when assembled, produce a picture. In Experiment 1, 3-to 5-year-olds (N=117) completed jigsaw puzzles that were normal, had no picture, or comprised non-interlocking rectangular pieces. Pictorial puzzle completion was associated with mental and graphical metarepresentational task performance. Guide pictures of completed pictorial puzzles were not useful. In Experiment 2, 3- to 4-year-olds (N=52) completed a simplified task, to choose the correct final piece. Guide-use associated with age and specifically graphical metarepresentation performance. We conclude that the pragmatically natural measure of jigsaw puzzle completion ability demonstrates general and pictorial metarepresentational development at 4 years

Herald of Holiness Volume 85 Number 06 (1996)

Cover Photo Credit: H. Armstrong Roberts FEATURES 5 Honoring Dad, R. T. Kendall 8 Television and Talk, Nancy O. Wilson 10 Controlling the Remote, Randall Murphree 12 Remove Violence Aimed at Children, Paul Jetter 20 Loving the ADHD Child, Marie Chase 24 Do You Know My Child?, Hazel McClain 26 Second Row, Piano Side: An Interview with Chonda Pierce 36 We Remember Pearl, Chip Ricks 38 C’mon, Try Something Old and Different!, Alden E. Sproull POETRY 32 Now, Jim Wilcox 44 Different Answers, Nancy Spiegelberg CONTINUING COLUMNS 6 General Superintendent’s Viewpoint, James H. Diehl 19 Over 60, C. Ellen Watts 32 When You Pray, E. Dee Freeborn 34 Masculine Journey, Mark Metcalfe 35 In a Woman’s Voice, Rebecca Laird 42 Into the Word, Roger L. Hahn 46 Observer at Large, John C. Bowling DEPARTMENTS 2 Editor’s Choice, Wesley D. Tracy 3 Signs, Michael R. Estep 4 The Readers Write 7 Evangelists’ Slates 13 NIV Crossword Puzzle, Rick Jansen 14-18, 43-45 News 30 Nazarene Family 34 The Quote Rack 47 Marked Copy, Mark Graham 48 Late Newshttps://digitalcommons.olivet.edu/cotn_hoh/1029/thumbnail.jp

Herald of Holiness Volume 85 Number 06 (1996)

Cover Photo Credit: H. Armstrong Roberts FEATURES 5 Honoring Dad, R. T. Kendall 8 Television and Talk, Nancy O. Wilson 10 Controlling the Remote, Randall Murphree 12 Remove Violence Aimed at Children, Paul Jetter 20 Loving the ADHD Child, Marie Chase 24 Do You Know My Child?, Hazel McClain 26 Second Row, Piano Side: An Interview with Chonda Pierce 36 We Remember Pearl, Chip Ricks 38 C’mon, Try Something Old and Different!, Alden E. Sproull POETRY 32 Now, Jim Wilcox 44 Different Answers, Nancy Spiegelberg CONTINUING COLUMNS 6 General Superintendent’s Viewpoint, James H. Diehl 19 Over 60, C. Ellen Watts 32 When You Pray, E. Dee Freeborn 34 Masculine Journey, Mark Metcalfe 35 In a Woman’s Voice, Rebecca Laird 42 Into the Word, Roger L. Hahn 46 Observer at Large, John C. Bowling DEPARTMENTS 2 Editor’s Choice, Wesley D. Tracy 3 Signs, Michael R. Estep 4 The Readers Write 7 Evangelists’ Slates 13 NIV Crossword Puzzle, Rick Jansen 14-18, 43-45 News 30 Nazarene Family 34 The Quote Rack 47 Marked Copy, Mark Graham 48 Late Newshttps://digitalcommons.olivet.edu/cotn_hoh/1029/thumbnail.jp