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127 results on '"Kramer, Eric M."'

2. Stress condensation in crushed elastic manifolds

Author

Kramer, Eric M. and Witten, Thomas A.

Subjects
Condensed Matter
Abstract

We discuss an M-dimensional phantom elastic manifold of linear size L crushed into a small sphere of radius R << L in N-dimensional space. We investigate the low elastic energy states of 2-sheets (M=2) and 3-sheets (M=3) using analytic methods and lattice simulations. When N \geq 2M the curvature energy is uniformly distributed in the sheet and the strain energy is negligible. But when N=M+1 and M>1, both energies appear to be condensed into a network of narrow M-1 dimensional ridges. The ridges appear straight over distances comparable to the confining radius R., Comment: 4 pages, RevTeX + epsf, 4 figures, Submitted to Phys. Rev. Lett

Published
1996
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3. The von Karman equations, the stress function, and elastic ridges in high dimensions

Author

Kramer, Eric M.

Subjects
Condensed Matter, Mathematics - Differential Geometry
Abstract

The elastic energy functional of a thin elastic rod or sheet is generalized to the case of an M-dimensional manifold in N-dimensional space. We derive potentials for the stress field and curvatures and find the generalized von Karman equations for a manifold in elastic equilibrium. We perform a scaling analysis of an M-1 dimensional ridge in an M = N-1 dimensional manifold. A ridge of linear size X in a manifold with thickness h << X has a width w ~ h^{1/3}X^{2/3} and a total energy E ~ h^{M} (X/h)^{M-5/3}. We also prove that the total bending energy of the ridge is exactly five times the total stretching energy. These results match those of A. Lobkovsky [Phys. Rev. E 53, 3750 (1996)] for the case of a bent plate in three dimensions., Comment: corrected references, 27 pages, RevTeX + epsf, 2 figures, Submitted to J. Math. Phys

Published
1996
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4. Universal Power Law in the Noise from a Crumpled Elastic Sheet

Author

Kramer, Eric M. and Lobkovsky, Alexander E.

Subjects
Condensed Matter
Abstract

Using high-resolution digital recordings, we study the crackling sound emitted from crumpled sheets of mylar as they are strained. These sheets possess many of the qualitative features of traditional disordered systems including frustration and discrete memory. The sound can be resolved into discrete clicks, emitted during rapid changes in the rough conformation of the sheet. Observed click energies range over six orders of magnitude. The measured energy autocorrelation function for the sound is consistent with a stretched exponential C(t) ~ exp(-(t/T)^{b}) with b = .35. The probability distribution of click energies has a power law regime p(E) ~ E^{-a} where a = 1. We find the same power law for a variety of sheet sizes and materials, suggesting that this p(E) is universal., Comment: 5 pages (revtex), 10 uuencoded postscript figures appended, html version at http://rainbow.uchicago.edu/~kramer

Published
1995
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16. Gifts to minors

Author

Kramer, Eric M.

Subjects
Personal finance -- Taxation -- Methods, Tax planning -- Methods, Gift tax -- Management -- Methods, Gifts to minors -- Taxation -- Methods, Estate planning -- Methods -- Taxation, Banking, finance and accounting industries, Business, Company business management, Management, Taxation, Methods
Abstract

There are many tax reasons to make gifts to children and grandchildren. Taking advantage of the annual $10,000 gift tax exclusion is one. But what the best way to make [...]

Published
1996

17. Sophisticated estate planning using GRITS, GRATS, and GRUTS

Author

Kramer, Eric M.

Subjects
Grantor trusts -- Usage -- Methods, Estate planning -- Methods -- Usage, Banking, finance and accounting industries, Business, Usage, Methods
Abstract

IRC Sec. 2702 effectively eliminates the use of the GRIT (Grantor Retained Income Trust) involving transfers to family members. There are a number of exceptions to this rule, including the [...]

Published
1993

19. Avoidance model for soft particles. I. Charged spheres and rods beyond the dilute limit.

Author

Kramer, Eric M. and Herzfeld, Judith

Subjects
*SPHEROIDAL state, *SOLUTION (Chemistry)
Abstract

Extends the avoidance model for parallel, charged spherocylinders to the case of charged spherocylinders with orientational freedom. Comparison of the predicted second virial coefficient to exact values to check the accuracy of the theory in the dilute solution limit; Accuracy of the avoidance model prediction for dilute charged spheres.

Published
1999
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24. Auxin transport through non-hair cells sustains root-hair development

Author

Jones, Angharad R, Kramer, Eric M, Knox, Kirsten, Swarup, Ranjan, Bennett, Malcolm J, Lazarus, Colin M, Leyser, HM Ottoline, Grierson, Claire S, Leyser, Ottoline [0000-0003-2161-3829], and Apollo - University of Cambridge Repository

Subjects
integumentary system, Indoleacetic Acids, Arabidopsis Proteins, fungi, Arabidopsis, food and beverages, Biological Transport, Active, heterocyclic compounds, Cell Differentiation, Computer Simulation, sense organs, Plant Roots, Plant Epidermis
Abstract

The plant hormone auxin controls root epidermal cell development in a concentration-dependent manner. Root hairs are produced on a subset of epidermal cells as they increase in distance from the root tip. Auxin is required for their initiation and continued growth, but little is known about its distribution in this region of the root. Contrary to the expectation that hair cells might require active auxin influx to ensure auxin supply, we did not detect the auxin-influx transporter AUX1 in root-hair cells. A high level of AUX1 expression was detected in adjacent non-hair cell files. Non-hair cells were necessary to achieve wild-type root-hair length, although an auxin response was not required in these cells. Three-dimensional modelling of auxin flow in the root tip suggests that AUX1-dependent transport through non-hair cells maintains an auxin supply to developing hair cells as they increase in distance from the root tip, and sustains root-hair outgrowth. Experimental data support the hypothesis that instead of moving uniformly though the epidermal cell layer, auxin is mainly transported through canals that extend longitudinally into the tissue.

Published
2009

28. "It's Not Like You Need to Live 10 or 20 Years": Challenges to Patient-Centered Care in Gynecologic Oncologist--Patient Interactions.

Author

Hsieh, Elaine, Bruscella, Jacqueline, Zanin, Alaina, and Kramer, Eric M.

Subjects
COMMUNICATION, DISCOURSE analysis, GYNECOLOGY, HEALTH attitudes, MEDICAL quality control, ONCOLOGY, PATIENT satisfaction, PHYSICIAN-patient relations, RESEARCH funding, QUALITATIVE research, PATIENT-centered care, PATIENTS' attitudes
Abstract

The literature suggests that the patient-perspective approach (i.e., eliciting and responding to patients' perspectives, including beliefs, preferences, values, and attitudes) to patient-centered care (PCC) is not a reliable predictor of positive outcomes; however, little is known about why the patient-perspective approach does not necessarily lead to positive outcomes. By using discourse analysis to examine 44 segments of oncologist-patient interactions, we found that providers' use of patient-perspective contextualization can affect the quality of care through (a) constructing the meanings of patient conditions, (b) controlling interpreting frames for patient conditions, and (c) manipulating patient preferences through strategic information sharing. We concluded that providers' use of patient-perspective contextualization is an insufficient indicator of PCC because these discursive strategies can be used to control and manipulate patient preferences and perspectives. At times, providers' patient-perspective contextualization can silence patients' voice and appear discriminatory. [ABSTRACT FROM AUTHOR]

Published
2016
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38. Final regulations on qualified domestic trusts

Author

Kramer, Eric M. and Fornasar, Gregory C.

Subjects
Marital deduction -- Laws, regulations and rules, Estate planning -- Laws, regulations and rules, Estate tax -- Laws, regulations and rules, Trusts and trustees -- Laws, regulations and rules, Banking, finance and accounting industries, Business, Government regulation, Laws, regulations and rules
Abstract

In general, property passing from a decedent to a surviving spouse will qualify for the estate tax marital deduction under IRC section 2056. However, where the surviving spouse is not [...]

Published
1997

39. Recent developments in disclaimers of property for post-mortem estate planning

Author

Kramer, Eric M.

Subjects
Estate tax -- Laws, regulations and rules, Disclaimer of gifts -- Laws, regulations and rules, Banking, finance and accounting industries, Business, Government regulation, Laws, regulations and rules
Abstract

Proposed regulations have recently been issued that have answered some questions while leaving others unanswered in the area of qualified disclaimers. Although disclaimers have many uses in post-mortem estate planning, [...]

Published
1997

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