نتایج جستجو برای: مقطع hat

تعداد نتایج: 27726  

2017
Robert Sewell

Q uantum interference effects lie at the heart of technologies that promise radically new capabilities for sensors, secure communications, and computing. Most existing experiments and applications rely on one photon interfering with itself, or two photons interfering with each other. However, the interference of a larger number of particles leads to a richer variety of phenomena, and may enable...

Journal: :Nature 1985

Journal: :Urban Geography 2017

2006
P. Andreani

The arguments presented by González-Nuevo et al. (2006) in favour of theMexican Hat Wavelet Family (MHWF) are critically discussed here. These authors allege the optimal properties of this new class of filters in the detection of point sources embedded in a noise background but their claim is not based upon a solid mathematical foundation and proof.

2008
Javier Serrano

Migrants from rural Mexico usually move abroad with the idea to return once they have improved their economic situation. Although they do not always go back, Mexican migrants often plan their return before leaving. In any case, the imagined return persists for a long time in their minds. This paper analyzes the ways in which rural migrants from southern Veracruz and western Mexico imagine a bet...

Journal: : 2021

Cilt, tezhip ve ebrû gibi İslam sanatları, hat sanatının merkezî rolüyle gelişmiştir. Hat teşhiri başlangıçta Kur’an-ı Kerim’in istinsahı yapılar üzerindeki kitabelerle olmuştur. medeniyeti, farklı milletlerle coğrafyalarda temsil edilmiş ancak hepsinin ortak sanatı her zaman Orta Çağda net bir şekilde kaideleri kuralları olan tek sanatın olduğu bilinmektedir. tarihin hiçbir döneminde belirli z...

Journal: :CoRR 2013
Benjamin Doerr

In this note, we give an explicit polynomial-time executable strategy for Peter Winkler’s hat guessing game that gives superior results if the distribution of hats is imbalanced. While Winkler’s strategy guarantees in any case that ⌊n/2⌋ of the n player guess their hat color correct, our strategy ensures that the players produce max{r, b} − 1.2n2/3 − 2 correct guesses for any distribution of r ...

Journal: :Chemistry 2011
Rafael Juárez María Moreno Oliva Mar Ramos José L Segura Carlos Alemán Francisco Rodríguez-Ropero David Curcó Francisco Montilla Veaceslav Coropceanu Jean Luc Brédas Yabing Qi Antoine Kahn M Carmen Ruiz Delgado Juan Casado Juan T López Navarrete

A new hexaazatriphenylene (HAT) derivative formed by the fusion of three HAT units has been prepared and its electronic and molecular structures have been fully characterized by optical and vibrational Raman spectroscopy, electrochemistry, solid-state UV and inverse photoemission spectroscopy (UPS and IPES), and by quantum-chemical calculations. A comparative HAT versus tri-HAT study was perfor...

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