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Symmetry and Related Properties via the Maximum Principle

by B. Gidas, Wei-ming Ni, L. Nirenberg , 1979
"... We prove symmetry, and some related properties, of positive solutions of second order elliptic equations. Our methods employ various forms of the maximum principle, and a device of moving parallel planes to a critical position, and then showing that the solution is symmetric about the limiting plan ..."
Abstract - Cited by 538 (4 self) - Add to MetaCart
We prove symmetry, and some related properties, of positive solutions of second order elliptic equations. Our methods employ various forms of the maximum principle, and a device of moving parallel planes to a critical position, and then showing that the solution is symmetric about the limiting

Learning the Kernel Matrix with Semi-Definite Programming

by Gert R. G. Lanckriet, Nello Cristianini, Laurent El Ghaoui, Peter Bartlett, Michael I. Jordan , 2002
"... Kernel-based learning algorithms work by embedding the data into a Euclidean space, and then searching for linear relations among the embedded data points. The embedding is performed implicitly, by specifying the inner products between each pair of points in the embedding space. This information ..."
Abstract - Cited by 775 (21 self) - Add to MetaCart
is contained in the so-called kernel matrix, a symmetric and positive definite matrix that encodes the relative positions of all points. Specifying this matrix amounts to specifying the geometry of the embedding space and inducing a notion of similarity in the input space---classical model selection

Self-discrepancy: A theory relating self and affect

by E. Tory Higgins - PSYCHOLOGICAL REVIEW , 1987
"... This article presents a theory of how different types of discrepancies between self-state representations are related to different kinds of emotional vulnerabilities. One domain of the self (actual; ideal; ought) and one standpoint on the self (own; significant other) constitute each type of self-st ..."
Abstract - Cited by 599 (7 self) - Add to MetaCart
of an individual's beliefs about his or her own or a significant other's hopes, wishes, or aspirations for the individual) signify the absence of positive outcomes, which is associated with dejection-related emotions (e.g., disappointment, dissatisfaction, sadness). In contrast, discrepancies between

Comparing Images Using the Hausdorff Distance

by Daniel P. Huttenlocher, Gregory A. Klanderman, William J. Rucklidge - IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE , 1993
"... The Hausdorff distance measures the extent to which each point of a `model' set lies near some point of an `image' set and vice versa. Thus this distance can be used to determine the degree of resemblance between two objects that are superimposed on one another. In this paper we provide ef ..."
Abstract - Cited by 659 (10 self) - Add to MetaCart
efficient algorithms for computing the Hausdorff distance between all possible relative positions of a binary image and a model. We focus primarily on the case in which the model is only allowed to translate with respect to the image. Then we consider how to extend the techniques to rigid motion

Expected stock returns and volatility

by Kenneth R. French, G. William Schwert, Robert F. Stambaugh - Journal of Financial Economics , 1987
"... This paper examines the relation between stock returns and stock market volatility. We find evidence that the expected market risk premium (the expected return on a stock portfolio minus the Treasury bill yield) is positively related to the predictable volatility of stock returns. There is also evid ..."
Abstract - Cited by 716 (10 self) - Add to MetaCart
This paper examines the relation between stock returns and stock market volatility. We find evidence that the expected market risk premium (the expected return on a stock portfolio minus the Treasury bill yield) is positively related to the predictable volatility of stock returns. There is also

Is learning by exporting important? Micro-dynamic evidence from Colombia, Mexico and Morocco

by Sofronis K. Clerides, Saul Lach, James R. Tybout - Quarterly Journal of Economics , 1998
"... Do firms become more efficient after becoming exporters? Do exporters generate positive externalities for domestically oriented producers? In this paper we tackle these questions by analyzing the causal links between exporting and productivity using plant-level data. We look for evidence that firms ..."
Abstract - Cited by 604 (13 self) - Add to MetaCart
’ cost processes change after they break into foreign markets. We find that relatively efficient firms become exporters; however, in most industries, firms ’ costs are not affected by previous exporting activities. So the well-documented positive association between exporting and efficiency is explained

Relational Positioning Methodology

by Adolfo Rodríguez, Luis Basáñez, Enric Celaya, Enric Celaya
"... Description of a robotics-oriented relational positioning methodology ..."
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Description of a robotics-oriented relational positioning methodology

Relative Positioning

by Albert Krohn
"... Positioning of mobile devices is a core requirement in many mobile computing applications. Typically, such applications use external infrastructure installed in the environment to obtain position information. Several different technologies have been investigated such as ultra sound, magnetic fields ..."
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Positioning of mobile devices is a core requirement in many mobile computing applications. Typically, such applications use external infrastructure installed in the environment to obtain position information. Several different technologies have been investigated such as ultra sound, magnetic fields

Happiness is everything, or is it? Explorations on the meaning of psychological well-being

by Carol D. Ryff , 1989
"... Reigning measures of psychological well-being have little theoretical grounding, despite an extensive literature on the contours of positive functioning. Aspects of well-being derived from this literature (i.e., self-acceptance, positive relations with others, autonomy, environmental mastery, purpos ..."
Abstract - Cited by 595 (14 self) - Add to MetaCart
Reigning measures of psychological well-being have little theoretical grounding, despite an extensive literature on the contours of positive functioning. Aspects of well-being derived from this literature (i.e., self-acceptance, positive relations with others, autonomy, environmental mastery

Illiquidity and stock returns: cross-section and time-series effects,

by Yakov Amihud - Journal of Financial Markets , 2002
"... Abstract This paper shows that over time, expected market illiquidity positively affects ex ante stock excess return, suggesting that expected stock excess return partly represents an illiquidity premium. This complements the cross-sectional positive return-illiquidity relationship. Also, stock ret ..."
Abstract - Cited by 864 (9 self) - Add to MetaCart
Abstract This paper shows that over time, expected market illiquidity positively affects ex ante stock excess return, suggesting that expected stock excess return partly represents an illiquidity premium. This complements the cross-sectional positive return-illiquidity relationship. Also, stock
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