The/3-carotene absorption from the lowest triplet state was investigated over a wide spectral range. A new absorption transition in the nearIR region was found. The absorption band exhibited a 0--0 transition at about 8100 cm1 with a low intensity, lower by a factor of approximately 300 than the intensity of the known triplet-triplet absorption in the visible range. The vibronic structure of th...

The decomposition of 1,2-dioxetanone into a CO(2) molecule and into an excited state formaldehyde molecule was studied in condensed phase, using a density functional theory approach. Singlet and triplet ground and excited states were all included in the calculations. The calculations revealed a novel mechanism for the chemiluminescence of this compound. The triplet excitation can be explained b...

A condensate, tt, arising from O(TeV ) scale “topcolor,” in addition to technicolor (and ETC) may naturally explain the gauge hierarchy, the large top quark mass, and contains a rich system of testable consequences. A triplet of strongly coupled pseudo–Nambu–Goldstone bosons, “toppions,” near the top mass scale is a generic prediction of the models. A new class of technicolor schemes and associ...

The software processes that facilitate the original loading and the periodic refreshment of the data warehouse contents are commonly known as Extraction-Transformation-Loading (ETL) processes. The intention of this survey is to present the research work in the field of ETL technology in a structured way. To this end, we organize the coverage of the field as follows: (a) first, we cover the conc...

Kernel function k1 ▸ fix two objects xa and xb for which we want to compute similarity score ▸ assume we have answers to all comparisons d(xa, xj) ? < d(xa, xk) and d(xb, xj) ? < d(xb, xk), xj, xk ∈ D ▸ can rank objects in D with respect to their dissimilarity to xa and also with respect to their dissimilarity to xb ▸ computing Kendall’s τ between the two rankings as similarity score between xa...

We extend the Bogolubov averaging principle for discontinuous semimartingales with paths dependent triplet of the predictable characteristics.

We study the wave equation on a bounded Lipschitz set, characterizing all homogeneous boundary conditions for which this partial differential equation generates a contraction semigroup in the energy space L(Ω). The proof uses boundary triplet techniques. MSC 2010 — 35F15, 35L05, 93C20

In this paper we review several relationships between prices of put and call options, of both the European and the American type, obtained mainly through Girsanov Theorem, when the asset price is driven by a time-changed Lévy process. This relation is called put-call duality, and includes the relation known as put-call symmetry as a particular case. Necessary and sufficient conditions for put-c...

We describe a framework in which to generalize the Heath, Jarrow and Morton model for the term structure of interest rates. We represent the model in terms of the triplet of characteristics of the underlying semimartingales. We state and prove the necessary and sufficient conditions for absence of arbitrage in terms of the characteristics of the price process. The methodology is then extended t...

RÉSUMÉ. Les approches par réutilisation peuvent contribuer à l’amélioration des activités d’ingénierie des besoins et notamment dans l’étape d’élucidation des besoins. Dans ce papier, nous proposons un métamodèle permettant de représenter et d’organiser les connaissances d’un domaine sous forme de fragments de connaissance. Un fragment de connaissance est un triplet <but, règles de gestion, fra...