نتایج جستجو برای: mars algorithm

تعداد نتایج: 767029  

Journal: :Nucleic acids research 1999
P Rollini S J Namciu M D Marsden R E Fournier

Matrix-attachment regions (MARs) are DNA elements that are defined by their abilities to bind to isolated nuclear matrices in vitro. The DNA sequences of different matrix-binding elements vary widely. The locations of some MARs at the ends of chromatin loops suggest that they may represent boundaries of individual chromatin domains. As such, MARs may play important roles in regulating transcrip...

2009
Mary P Harper Stephen A Hockema Christopher M White

Constraint Dependency Grammar CDG is a constraint based grammatical formalism that has a weak generative capacity beyond context free gram mars and supports a very exible parsing algorithm for working with feature grammars however the running time of the parser is O n Hence we have investi gated how to improve the running time of the parser by applying feature constraints di erentially and by u...

2003
J. L. Lacour B. Sallé R. Brennetot E. Vors P. Fichet A. Rivoallan C. Fabre J. Dubessy S. Maurice R. C. Wiens D. A. Cremers

Lacour, B. Sallé, R. Brennetot, , E. Vors, P. Fichet, A. Rivoallan, C. Fabre, J. Dubessy, S. Maurice, R. C. Wiens, D. A. Cremers. Laboratoire d’Analyse par Laser et d’Etude des Surfaces (CEA, 91191 Gif sur Yvette, France, [email protected]), Centre de Recherche de la Géologie de l’Uranium (Univ. Henri Poincaré, 54506, Vandœuvre les Nancy, France, [email protected]), Laboratoir...

Journal: :Acta astronautica 2016
Andrew A Gonzales Carol R Stoker

Mars Sample Return is the highest priority science mission for the next decade as recommended by the 2011 Decadal Survey of Planetary Science [1]. This article presents the results of a feasibility study for a Mars Sample Return mission that efficiently uses emerging commercial capabilities expected to be available in the near future. The motivation of our study was the recognition that emergin...

Journal: :Journal of Spacecraft and Rockets 1991

Journal: :Science 1998
Acuña Connerney Wasilewski Lin Anderson Carlson McFadden Curtis Mitchell Reme Mazelle Sauvaud d'Uston Cros Medale Bauer Cloutier Mayhew Winterhalter Ness

The magnetometer and electron reflectometer investigation (MAG/ER) on the Mars Global Surveyor spacecraft has obtained magnetic field and plasma observations throughout the near-Mars environment, from beyond the influence of Mars to just above the surface (at an altitude of approximately 100 kilometers). The solar wind interaction with Mars is in many ways similar to that at Venus and at an act...

Journal: :Physical review letters 2007
Eric J R Parteli Hans J Herrmann

We present the first calculation of saltation transport and dune formation on Mars and compare it to real dunes. We find that the rate at which grains are entrained into saltation on Mars is 1 order of magnitude higher than on Earth. With this fundamental novel ingredient, we reproduce the size and different shapes of Mars dunes, and give an estimate for the wind velocity on Mars.

2000
Eli Biham Vladimir Furman

MARS is one of the AES nalists. The up-to-date analysis of MARS includes the discovery of weak keys, and Biham's estimation that a 12round variant of MARS is breakable. This estimation was partly founded based on a 7-round impossible di erential of the core of MARS. However, no such attack was presented to-date. In this paper we present two new longer impossible di erentials of 8 rounds.

Journal: :Earth and Space Science 2021

In December 2018, the NASA InSight lander successfully placed a seismometer on surface of Mars. Alongside, hammering device was deployed at landing site that penetrated into ground to attempt first measurements planetary heat flow The probe generated repeated seismic signals were registered by and can potentially be used image shallow subsurface just below lander. However, broad frequency conte...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید