76,986 research outputs found
Cost-Benefit Analysis of Climate Change: Stern Revisited
Get PDFThis paper explores the challenges facing orthodox economic approaches to assessing climate control as if it were appraisal of an investment project. Serious flaws are noted in the work of economists with especial attention to the UK Government report by Stern and colleagues. The opinions expressed in this paper are those of the authors and may not be taken to reflect the views CSIRO or the Australian Government.enhanced greenhouse effect, global CBA, Stern Report
Transient finite element analysis of electric double layer using Nernst-Planck-Poisson equations with a modified stern layer
Get PDFFinite element analysis of electric double layer capacitors using a transient
nonlinear Nernst-Planck-Poisson (NPP) model and Nernst-Planck-Poisson-modified
Stern layer (NPPMS) model are presented in 1D and 2D. The NPP model provided
unrealistic ion concentrations for high electrode surface potential. The NPPMS model
uses a modified Stern layer to account for finite ion size, resulting in realistic ion
concentrations even at high surface potential.
The finite element solution algorithm uses the Newton-Raphson method to solve
the nonlinear problem and the alpha family approximation for time integration to solve
the NPP and NPPMS models for transient cases. Cubic Hermite elements are used for
interfacing the modified Stern and diffuse layers in 1D while serendipity elements are
used for the same in 2D. Effects of the surface potential and bulk molarity on the electric potential and ion
concentrations are studied. The ability of the models to predict energy storage capacity is
investigated and the predicted solutions from the 1D NPP and NPPMS models are
compared for various cases. It is observed that NPPMS model provided realistic and
correct results for low and high values of surface potential.
Furthermore, the 1D NPPMS model is extended into 2D. The pore structure on
the electrode surface, the electrode surface area and its geometry are important factors in
determining the performance of the electric double layer capacitor. Thus 2D models
containing a porous electrode are modeled and analyzed for understanding of the
behavior of the electric double layer capacitor. The effect of pore radius and pore depth
on the predicted electric potential, ion concentrations, surface charge density, surface
energy density, and charging time are discussed using the 2D Nernst-Planck-Poissonmodified
Stern layer (NPPMS) model
C. Balmelle, M. Blanchard-Lemee, J. Christophe, J.-P. Darmon , A.-M. Guimier-Sorbets, Η. Lavagne, R. Prudhomme, H. Stern, Le décor géométrique de la mosaïque romaine, 1985
No full textBarbet Alix. C. Balmelle, M. Blanchard-Lemee, J. Christophe, J.-P. Darmon , A.-M. Guimier-Sorbets, Η. Lavagne, R. Prudhomme, H. Stern, Le décor géométrique de la mosaïque romaine, 1985. In: Revue des Études Anciennes. Tome 90, 1988, n°3-4. pp. 458-459
Likelihood inference for small variance components
No full textIn this paper, we develop likelihood-based methods for making inferences about the components of variance in a general normal mixed linear model. In particular, we use local asymptotic approximations to construct confidence intervals for the components of variance when the components are close to the boundary of the parameter space. In the process, we explore the question of how to profile the restricted likelihood (REML), show that general REML estimates have a lower probability of being on the boundary than maximum likelihood estimates, and show that the likelihood-ratio test based on the local asymptotic approximation has higher power against local alternatives than the likelihood-ratio test based on the usual chi-squared approximation. We explore the finite sample properties of the proposed intervals by means of a small simulation study
[bust portrait of] Sidney Stern.
No full textPhoto Div C.3 .Jewish Philadelphia.26. Bust portrait of Sidney M. Stern. Member of the Philadelphia Jewish community.; Photographer: Broadbent & Phillips (Philadelphia).; Handwritten on verso, "Compliments of Sidney M. Stern."; Individual and group studio portraits, likely of members of the Philadelphia Jewish community, most identified by manuscript notes on mounts.; Subjects include: Adolph Rosenheim, Dr. Arnold, Mrs. Goldsmith, Sidney M. Stern, Jacob S. Frank, Simon Fleisher, Mayer Fleisher, Rachel Carvalho, Sally Greenwald, Aaron Greenwald, Morris Goldsmith, Isadore Weil, Charles Hoffman, Leo Loeb, Adolph Rosenheim, Eva Friend, Lawrence Friend.; Photographers include: Abraham Bogardus (N.Y.), Frederick Gutekunst (Philadelphia), Gilbert & Bacon (Philadelphia), Peterson Bros. (Chicago), Riker (N.Y.), Draper & Husted (Philadelphia), Frank Jewell (Scranton, Pa.), Henszey & Co. (Philadelphia), J. Brill (N.Y.), E.H. Canfield (Milwaukee), H. & A. Krull (Neustrelitz, Germany), Broadbent & Phillips (Philadelphia), J. Goldin (Washington, D.C.)
New frontiers of freeway traffic control and estimation
No full textThis article provides an overview of the classical and new techniques in traffic flow control and estimations. The overview begins with a description of the most used traffic flow models for estimation and control. Then, it shifts towards using those models for traffic flow estimation using physics-informed machine learning techniques. Lastly, it focuses on traffic flow control describing the most classical techniques and the new advancement in traffic control using autonomous vehicles
Stability and change of individual differences in ideal partner preferences over 13 years
No full textIdeal partner preferences for traits in a partner are said to be stable cognitive constructs. However, longitudinal studies investigating the same participants’ ideals repeatedly have so far been limited to relatively short retest intervals of maximum three years. Here, we investigate stability and change of ideals across 13 years and participants’ insight into how ideals have changed. 204 participants (M = 46.2 years, SD = 7.4, 104 women) reported their ideals at two time points. We found a mean rank-order stability of r = .42 and an overall profile stability of r = .73 (distinctive r = .53). Some ideals changed over time, e.g. increased for status-resources, in relation to age and parenthood. We found some, but varying insight into how ideals had changed (mean r = .20). Results support the idea of ideals being stable cognitive constructs, but suggest some variability related to demands of different life stages.<br/
The Ahmad-Stern approach revisited
Get PDFThis paper extends the methodology first proposed by Ahmad and Stern for the design of tax reforms that are optimal at the margin. The extension centers on a sharper approximation of welfare measures. The original approach and its variant are illustrated in the case of the current Mexican tax system.marginal tax analysis
Probing the predictive validity of ideal partner preferences for future partner traits and relationship outcomes across 13 years
No full textThe current study addresses the open question whether ideal partner preferences are linked to relationship decisions and relationship outcomes. Using a longitudinal design across 13 years, we investigated whether partner preferences are associated with perceived characteristics of actual partners (i.e. ideal-trait correlation) and whether a closer match between ideals and perceptions of a partner’s traits is associated with better relationship outcomes (i.e. ideal partner preference-matching effects). A community sample of 178 participants (90 women) reported their ideal partner preferences in 2006 (mean age at T2 M = 45.7 years, SD = 7.2). In 2019, they reported their relationship histories since then, providing ratings of 322 relationships. We found a positive association between participants’ initial ideals and partner trait perceptions. This ideal-trait correlation was stronger with current ideals, consistent with the possibility of preference adjustment towards the partner. The match between ideals and perceived partner traits was operationalised using different metrics. A closer match was associated with higher relationship commitment across all metrics, while for relationship quality, the link was not apparent for the corrected pattern metric. Evidence of matching effects for relationship length was mixed and largely absent for break-up initiation. Implications for the ideal partner preference literature are discussed.<br/
Reducibility and irreducibility of Stern -polynomials
Get PDFsummary:The classical Stern sequence was extended by K.B. Stolarsky and the first author to the Stern polynomials defined by , , , and ; these polynomials are Newman polynomials, i.e., they have only 0 and 1 as coefficients. In this paper we prove numerous reducibility and irreducibility properties of these polynomials, and we show that cyclotomic polynomials play an important role as factors. We also prove several related results, such as the fact that can only have simple zeros, and we state a few conjectures
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