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See detailThymopoiesis requires Pax9 function in thymic epithelial cells.
Hetzer-Egger, Claudia; Schorpp, Michael; Haas-Assenbaum, Annette et al

in European Journal of Immunology (2002), 32(4), 1175-81

The epithelial thymic anlage develops from the third pharyngeal pouch. Pax9 is expressed in the entire pharyngeal endoderm, and its function is required for normal development of organs derived from ... [more ▼]

The epithelial thymic anlage develops from the third pharyngeal pouch. Pax9 is expressed in the entire pharyngeal endoderm, and its function is required for normal development of organs derived from pharyngeal pouches. Here, we show that in Pax9 null mice, the thymic anlage develops as an ectopic polyp-like structure in the larynx. It expresses Whn/Foxn1, a marker of thymic epithelium, but fails to perform the normal caudo-ventral movement to the upper mediastinum. The thymic rudiment contains mesenchymal cells, blood vessels and is colonized by T cell progenitors. However, from embryonic day 14.5 onwards, the size of the Pax9 mutant thymus is severely reduced. Whereas expression of TCRbeta chain genes is readily detectable in the mutant thymus, no expression of the TCRgamma chain was detectable. Our results identify a new genetically defined control point of thymopoiesis. [less ▲]

Detailed reference viewed: 32 (0 UL)
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See detailTIAA/CREF
Mehra, Rajnish UL

Scientific Conference (2011)

Detailed reference viewed: 13 (0 UL)
See detailLes TIC comme support au développement de stratégies de résolution de problèmes en mathématiques
Busana, Gilbert UL; Martin, Romain UL

in Les Cahiers de la Section des sciences de l'e?ducation. Pratiques et the?orie. (2008), 27-28

Detailed reference viewed: 28 (0 UL)
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See detailTidal Gravity Measurements in Southeast Asia
Melchior, Paul; Francis, Olivier UL; Ducarme, Bernard

in Marées Terrestres Bulletin d'Informations (1996), (125), 9493-9507

Detailed reference viewed: 15 (0 UL)
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See detailTidal gravity measurements in Southeast Asia revisited
Francis, Olivier UL; van Dam, Tonie UL

in Sun, Heping (Ed.) Progress on Geodesy and Geodynamics (2014)

Detailed reference viewed: 146 (22 UL)
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See detailTidal loading in south western Europe: A test area
Francis, Olivier UL; Melchior, P.

in Geophysical Research Letters (1996), 23(17), 2251-2254

Detailed reference viewed: 17 (1 UL)
See detailTierisch intelligent!
Baudson, Tanja UL

Article for general public (2011)

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See detailTiers et contrat au Luxembourg
Ancel, Pascal UL

in Les tiers (2016)

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See detailLe tiers monde et la recherche et l'enseignement du droit de l'Union européenne
Neframi, Eleftheria UL

in Ruiz-Fabri, Hélène (Ed.) Droit international et nouvelles approches sur le Tiers-monde : entre répétition et renouveau (2013)

Third world approaches to international law (TWAIL) could be adapted to Third world approaches to European Union law? What is the place of Third world questions in the research and teaching activity in ... [more ▼]

Third world approaches to international law (TWAIL) could be adapted to Third world approaches to European Union law? What is the place of Third world questions in the research and teaching activity in the field of European Union Law? [less ▲]

Detailed reference viewed: 42 (8 UL)
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See detailTies between graph theory and biology
Blazewicz, Jacek; Kasprzak, Marta; Vlassis, Nikos UL

in Gross, Jonathan L.; Yellen, Jay; Zhang, Ping (Eds.) Handbook of Graph Theory (2013)

Last decades brought us a new scientific area of computational biology, placed at the junction of biology (especially molecular biology), computer science and mathematics. Its aim is to solve real-world ... [more ▼]

Last decades brought us a new scientific area of computational biology, placed at the junction of biology (especially molecular biology), computer science and mathematics. Its aim is to solve real-world problems arising in biology with the use of mathematical models and methods, and tools from computer science. Molecular biology, due to its rapid progress, yields more and more experimental data, possible to be processed on computers only. Efficient processing and advisable analysis must be accompanied by well suited models and methods, the ones coming from graph theory frequently appeared to be most useful. Here, the most interesting and breakthrough approaches of computational biology tied with graph theory are characterized. [less ▲]

Detailed reference viewed: 68 (9 UL)
See detailTiger-Mommy gegen Terman – Wie viel Begabung braucht der Erfolg?
Baudson, Tanja UL

Article for general public (2011)

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See detailTight-binding description of the quasiparticle dispersion of graphite and few-layer graphene
Grueneis, A.; Attaccalite, C.; Wirtz, Ludger UL et al

in Physical Review B (2008), 78(20),

A universal set of third-nearest-neighbor tight-binding (TB) parameters is presented for calculation of the quasiparticle (QP) dispersion of N stacked sp(2) graphene layers (N=1...infinity) with AB ... [more ▼]

A universal set of third-nearest-neighbor tight-binding (TB) parameters is presented for calculation of the quasiparticle (QP) dispersion of N stacked sp(2) graphene layers (N=1...infinity) with AB stacking sequence. The present TB parameters are fit to ab initio calculations on the GW level and are universal, allowing to describe the whole pi "experimental" band structure with one set of parameters. This is important for describing both low-energy electronic transport and high-energy optical properties of graphene layers. The QP bands are strongly renormalized by electron-electron interactions, which results in a 20% increase in the nearest-neighbor in-plane and out-of-plane TB parameters when compared to band structure from density-functional theory. With the new set of TB parameters we determine the Fermi surface and evaluate exciton energies, charge carrier plasmon frequencies, and the conductivities which are relevant for recent angle-resolved photoemission, optical, electron energy loss, and transport measurements. A comparision of these quantitities to experiments yields an excellent agreement. Furthermore we discuss the transition from few-layer graphene to graphite and a semimetal to metal transition in a TB framework. [less ▲]

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See detailTight-Binding Simulations of Nanowires
García-Cristóbal, Alberto; Molina-Sanchez, Alejandro UL

in Bhushan, Bharat (Ed.) Encyclopedia of Nanotechnology (2015)

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See detailTight-binding study of the optical properties of GaN/AlN polar and nonpolar quantum wells
Molina-Sanchez, Alejandro UL; García-Cristóbal, A.; Cantarero, A.

in Microelectronics Journal (2009), 40(3), 418-420

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See detailTightening the uncertainty principle for stochastic currents
Polettini, Matteo UL; Lazarescu, Alexandre UL; Esposito, Massimiliano UL

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2016), 94(052104),

We connect two recent advances in the stochastic analysis of nonequilibrium systems: the (loose) uncertainty principle for the currents, which states that statistical errors are bounded by thermodynamic ... [more ▼]

We connect two recent advances in the stochastic analysis of nonequilibrium systems: the (loose) uncertainty principle for the currents, which states that statistical errors are bounded by thermodynamic dissipation, and the analysis of thermodynamic consistency of the currents in the light of symmetries. Employing the large deviation techniques presented by Gingrich et al. [Phys. Rev. Lett. 116, 120601 (2016)] and Pietzonka, Barato, and Seifert [Phys. Rev. E 93, 052145 (2016)], we provide a short proof of the loose uncertainty principle, and prove a tighter uncertainty relation for a class of thermodynamically consistent currents J . Our bound involves a measure of partial entropy production, that we interpret as the least amount of entropy that a system sustaining current J can possibly produce, at a given steady state. We provide a complete mathematical discussion of quadratic bounds which allows one to determine which are optimal, and finally we argue that the relationship for the Fano factor of the entropy production rate var σ/mean σ 2 is the most significant realization of the loose bound. We base our analysis both on the formalism of diffusions, and of Markov jump processes in the light of Schnakenberg’s cycle analysis. [less ▲]

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See detailTightly Connected Water Wires Facilitate Fast Proton Uptake at The Proton Entrance of Proton Pumping Proteins
Gu, Wei UL; Helms, Volkhard

in Journal of the American Chemical Society (2009), 131(6), 2080-

Tightly connected water wires (TCW) exist in systems with nonconfined water like the solvated membrane proton pump system. The TCWs that connect to the negatively charged proton entrance facilitate the ... [more ▼]

Tightly connected water wires (TCW) exist in systems with nonconfined water like the solvated membrane proton pump system. The TCWs that connect to the negatively charged proton entrance facilitate the fast proton uptake of the proton pump. They function as a direct proton bridge or/and stabilizer of protons within the Coulomb cage of the proton entrance. Negatively charged residue(s) at the proton entrance induce a large population of long TCWs. Additional negatively charged residues increase the population of such long TCWs and, thus, raise the possibility to capture proton from the solution. [less ▲]

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See detailTightly-Secure PAK(E)
Lopez Becerra, José Miguel UL; Iovino, Vincenzo UL; Ostrev, Dimiter UL et al

in Cryptology and Network Security (2017, December 02)

We present a security reduction for the PAK protocol instantiated over Gap Diffie-Hellman Groups that is tighter than previously known reductions. We discuss the implications of our results for concrete ... [more ▼]

We present a security reduction for the PAK protocol instantiated over Gap Diffie-Hellman Groups that is tighter than previously known reductions. We discuss the implications of our results for concrete security. Our proof is the first to show that the PAK protocol can provide meaningful security guarantees for values of the parameters typical in today’s world. [less ▲]

Detailed reference viewed: 37 (6 UL)
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See detailTilt plane orientation in antiferroelectric liquid crystal cells and the origin of the pretransitional effect
Rudquist, Per; Lagerwall, Jan UL; Meier, Johann G. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2002), 66(6), 061708

The optic, electro-optic, and dielectric properties of antiferroelectric liquid crystals 􏰐AFLCs􏰋 are analyzed and discussed in terms of the local tilt plane orientation. We show that the so-called ... [more ▼]

The optic, electro-optic, and dielectric properties of antiferroelectric liquid crystals 􏰐AFLCs􏰋 are analyzed and discussed in terms of the local tilt plane orientation. We show that the so-called pretransitional effect is a combination of two different electro-optic modes: the field-induced antiphase distortion of the antiferroelectric structure and the field-induced reorientation of the tilt plane. In the presence of a helix, the latter corresponds to a field-induced distortion of the helix. Both electro-optic modes are active only when the electric field has a component along the tilt plane. Thus, by assuring a horizontal surface-stabilized condition, where the helix is unwound by surface action and the tilt plane is everywhere parallel to the cell plates, the pretransitional effect should be suppressed. We also discuss the dielectrically active modes in AFLCs and under which circum- stances they contribute to the measured dielectric permittivity. [less ▲]

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See detailTime and decision making in humans
Klapproth, Florian UL

in Cognitive, Affective & Behavioral Neuroscience (2008), 8(4), 509-524

Decision making requires evaluating alternatives that differ on a number of attributes. During this evaluation process, selection of options depends on the duration of the options, the duration of the ... [more ▼]

Decision making requires evaluating alternatives that differ on a number of attributes. During this evaluation process, selection of options depends on the duration of the options, the duration of the expected delay for realizing the options, and the time available to reach a decision. This article reviews the relationship between time and decision making in humans with respect to this evaluation process. Moreover, the role of psychological time, as compared with physical time, is accentuated. Five topics have been selected that illustrate how time and mental representations of time affect decision making. These are (1) the duration of options, (2) temporal decision making, (3) the time between having made a decision and experiencing the consequences of that decision, (4) the temporal perspective of decision makers, and (5) the duration of the decision process. The discussion of each topic is supplemented by suggestions for further research. It is shown that psychological time is often neglected in human decision making but seems to play an important role in the making of choices. [less ▲]

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See detailTime and Defeasibility in FIPA ACL Semantics
Rotolo, Antonino; Boella, Guido; Governatori, Guido et al

in Proceedings of WLIAMAS 2008 (2008)

Inferences about speech acts are often conditional, nonmonotonic, and involve the issue of time. Most agent communication languages, however, ignore these issues, due to the difficulty to combine them in ... [more ▼]

Inferences about speech acts are often conditional, nonmonotonic, and involve the issue of time. Most agent communication languages, however, ignore these issues, due to the difficulty to combine them in a single formalism. This paper addresses such issues in defeasible logic, and shows how to express a semantics for ACLs in order to make nonmonotonic inferences on the basis of speech acts. [less ▲]

Detailed reference viewed: 44 (7 UL)