450,464 research outputs found
On deep e-contracting
The use of electronic contracts is emerging as a way to improve the effi-ciency of contracting processes. Electronic contracts are, however, often used as a direct replacement for traditional paper contracts - which we call shallow e-contracting. Consequently, business processes in general and contracting processes in particular do not change much through the use of electronic contracts. New business scenarios caused by e-business developments, however, do require new contracting paradigms in which the use of electronic contracts becomes an essential element to obtain a radical paradigm shift in contractual business relations - which we call deep e-contracting. In this position paper, we explore these new para-digms. We link the paradigms to exchanged values described in e-contracts to obtain a mapping from business requirements. We next map the paradigms to contracting activities. Finally, we map the activities to information technology required for their automated support. Based on the paradigms and mappings, this paper provides a concise framework for the exploration of deep e-contracting.\ud
Centro-affine normal flows on curves: Harnack estimates and Ancient solutions
We prove that the only compact, origin-symmetric, strictly convex ancient
solutions of the planar centro-affine normal flows are contracting
origin-centered ellipses.Comment: I changed the title and fixed some typos. To appear in Annales de
l'Institut Henri Poincar\'e (C) Analyse Non Lin\'eair
B2B eContract Handling - A Survey of Projects, Papers and Standards
The rapid development of IT gives rise to changes in many industries and different spheres of life. It simplifies and speeds up processes and data processing. As a result, it changes the processes and the data involved in them. The area of commerce and contracting in particular undergoes similar changes. The new developments aim at speeding up, facilitating and globalizing the process of contracting. This inevitably leads to new contracting processes and changes the standard approach for contracting. This report presents a survey of the research, development, and standardization efforts in the area of business-to-business e-contracting. The report is divided into three parts. The first part presents a multi-dimensional contracting framework. The second part reviews current standardization processes and developments in the e-commerce field. The third part provides summaries and comments on a selected set of papers on e-contracting. Depending on their goals, focus and content, the papers are categorized in accordance with the contract cycle phases described in one of the dimensions of the contracting framework. Where appropriate, the content of the papers is related to the dimensions of the contracting framework. This report further provides an acronym list of the most common abbreviations in e-commerce terminology
Super-Poincar\'e and Nash-type inequalities for Subordinated Semigroups
We prove that if a super-Poincar\'e inequality is satisfied by an
infinitesimal generator of a symmetric contracting semigroup then it
implies a corresponding super-Poincar\'e inequality for with any
Bernstein function . We also study the converse statement. We deduce similar
results for the Nash-type inequality. Our results applied to fractional powers
of and to and thus generalize some results of Biroli and
Maheux, and Wang 2007. We provide several examples.Comment: submitted. 23p. no figure. Title slightly changed. Results and text
improve
A Triangular Deformation of the two Dimensional Poincare Algebra
Contracting the -deformation of \SL(2,\Real), we construct a new
deformation of two dimensional Poincar\'e algebra, the algebra of functions on
its group and its differential structure. It is also shown that the Hopf
algebra is triangular, and its universal R matrix is also constructed
explicitly. Then, we find a deformation map for the universal enveloping
algebra, and at the end, give the deformed mass shells and Lorentz
transformation.Comment: 11 pages, LaTeX, Two figures upon reques
A classical bounce: constraints and consequences
We perform a detailed investigation of the simplest possible cosmological
model in which a bounce can occur, namely that where the dynamics is led by a
simple massive scalar field in a general self-interacting potential and a
background spacetime with positively curved spatial sections. By means of a
phase space analysis, we give the conditions under which an initially
contracting phase can be followed by a bounce and an inflationary phase lasting
long enough (i.e., at least 60-70 e-folds) to suppress spatial curvature in
today's observable universe. We find that, quite generically, this realization
requires some amount of fine-tuning of the initial conditions. We study the
effect of this background evolution on scalar perturbations by propagating an
initial power-law power spectrum through the contracting phase, the bounce and
the inflationary phase. We find that it is drastically modified, both
spectrally (k-mode mixing) and in amplitude. It also acquires, at leading
order, an oscillatory component, which, once evolved through the radiation and
matter dominated eras, happens to be compatible with the WMAP data.Comment: Updated references, improved figure resolutio
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