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suppose that you have an abstract for a scientific paper the emission mechanism and the origin and structure of magnetic fields in gamma a ray burst a grab a jets are among the most important open questions concerning the nature of the central engine of grabs a in spite of extensive observational efforts a these questi...
a a a a a a observations suggest that the burst is produced by internal dissipation within the relativistic jet that is launched from the center of the explosion a and the afterglow is the synchrotron emission of electrons accelerated in a collisionless shock driven by the interaction of the jet with the surrounding me...
401
suppose that you have an abstract for a scientific paper we give an explicit formula for the homology of a right angled martin group with group ring coefficients in terms of the homology of its defining flag complex a a and you have already written the first three sentences of the full article let be a finite simplicit...
a see for example excite a excite and excite a a here we refine the understanding of the end topology of right angle martin groups by giving an explicit formula for the homology of with group ring coefficients in terms of the homology of and links of implies in a if is a simplicity complex let denote the set of closed ...
402
suppose that you have an abstract for a scientific paper we introduce the notion of a a conjugation a free geometric presentation a for a fundamental group of a line arrangement a complement a and we show that the fundamental groups of the following family of arrangements have a conjugation a free geometric presentatio...
since is a plane curve a the fundamental groups of complements of curves can be used also for computing the fundamental groups of complements of hypersurfaces in a a different need for fundamental groups computations arises in the search for more examples of zariski pairs excite a
403
suppose that you have an abstract for a scientific paper narrow a band spectral imaging with sub a pixel resolution of the a chandra--acis archival observation of the using merger arp 220 strongly suggests two compton thick nuclei a spatially coincident with the infrared and radio emitting nuclear clusters a and separa...
a a a a a a a a active galactic nucleus a an a a
404
suppose that you have an abstract for a scientific paper we reexamine the invariance of two a photon transition matrix elements and corresponding two a photon rabi frequencies under the of gauge of transformation from the length to the velocity gauge a it is shown that gauge invariance a in the most general sense a onl...
lamb excite has shown that if one insists on using ordinary schrodinger wave functions in off a resonant one a photon transition matrix elements a then the length gauge form has to be used for the laser field a here a we refer to off a resonant transitions as those where the frequency of the incident radiation is not e...
405
suppose that you have an abstract for a scientific paper we have shown that non a zero is generated in a see a saw type softly broken symmetric model through a single parameter perturbation in in a single element a we have explored all possible a cases to study the neutrino mixing angles considering the best fitted val...
after this paper a a lot of work have done with this symmetrya after introduction of try a by maximal mixing pattern a a a a people have tried to fit this mixing pattern through the symmetry a in an well motivated extension of the standard model through the inclusion of discrete symmetry try a by
406
suppose that you have an abstract for a scientific paper constrained density functional theory a cd a is used to evaluate the energy level alignment of a benzene molecule as it approaches a grapheme sheet a within cd the problem is conveniently mapped onto evaluating total energy differences between different charge a ...
clearly the electronic structure of the interface between these two parts plays a crucial role in determining the final device performance and needs to be understood carefully a in particular it is important to determine how charge transfers between the organic and the inorganic component and the energies at which the ...
407
suppose that you have an abstract for a scientific paper using first a principles plane a wave calculations study of electronic and magnetic properties of hypothetical two a dimensional structure of li compound have been conducted a calculations show a that electronic properties of this this structure can be influenced...
shortly after a experimental techniques allowed fabrication of other new two a dimensional materials a like in and mos honeycomb structures excite a the discovery of such stable two a dimensional materials triggered search for similar structures made from different compounds a
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suppose that you have an abstract for a scientific paper this paper studies a the nash stability a in hedonic coalition formation games a we address the following issue a for a general problem formulation a is there any utility allocation method ensuring a nash a stable partition a we propose the definition of a the na...
on the other hand a a coalition formation game is called to be a hedonic a if a a the gain of any player depends solely on the members of the coalition to which the player belongs a a and a a the coalitions form as a result of the preferences of the players over their possible coalitions set accordingly a the stability...
409
suppose that you have an abstract for a scientific paper within mean a field theory we calculate the scaling functions associated with critical kashmir forces for a system consisting of two spherical colloids immersed in a binary liquid mixture near its convolute point and facing a planar a homogeneous substrate a for ...
these latter effects can lead a edge a to a strengthening or weakening of the total force acting on a particle surrounded by more than a single other one a a change of sign of that force a or the appearance of stable or unstable configurations a many a body effects appear in rather diverse systems such as nuclear matte...
410
suppose that you have an abstract for a scientific paper a class of potential backgrounds for highs boson searches in the channel at both the betatron and large hadron collider is presented a backgrounds from production with a external a conversion of the on a shell photon in detector material to an asymmetric electron...
the dominant background in this channel comes from electroweak pair production of -bosons a a this background is substantially larger than the highs boson signal a
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suppose that you have an abstract for a scientific paper we discuss the lift of certain d6-antid6-brane systems to a a theory a these are purely gravitational configurations with a bolt singularity a when reduced along a trivial circle a and for large bolt radius a the bolt is related to a non a supersymmetric orbifold...
we shall primarily be concerned with the geometry describing these configurations a its evolution as brands and antibranes annihilate each other and some similarities between the qualitative patterns that we find in this evolution and some recent results on the evolution due to the condensation of localised closed stri...
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suppose that you have an abstract for a scientific paper molecular hydrogen is the most abundant molecule in the universe a a large fraction of h forms by association of hydrogen atoms adsorbed on polycyclic aromatic hydrocarbons a pass a a where formation rates depend crucially on the a sticking probability a we have ...
the sticking of a atoms onto dust grains can also be an important mechanism to cool interstellar gas a excite a a in the past decades a a plethora of laboratory experiments and theoretical models have been developed to understand how h forms a
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suppose that you have an abstract for a scientific paper a clock steps a computer through a cycle of phases a for the propagation of logical symbols from one computer to another a each computer must mesh its phases with arrivals of symbols from other computers a even the best atomic clocks drift unforeseeable in freque...
the is second is then of defined of by the resonance that of would be found of at absolute zero temperature a implying zero radiation a a for a clock using cerium 133 atoms a this imagined resonance is declared by the general conference of weights and measures to be a 192 631 770 he a so that the is second is that numb...
414
suppose that you have an abstract for a scientific paper cracks are created by massive breakage of molecular or atomic bonds a the latter a in its turn a leads to the highly localized loss of material a which is the reason why even closed cracks are visible by a naked eye a thus a fracture can be interpreted as the loc...
these laws are built qualitatively as follows a traction increases up to a maximum and then goes down to zero via increasing separation a barenblatt a 1959 a needleman a 1987 a rice and wang a 1989 a tvergaard and hutchinson a 1992 a camacho and ortiz a 1996 a de worst a 2001 a of and needleman a 1994 a roe and sigmund...
415
suppose that you have an abstract for a scientific paper we consider an anderson impurity model in which the locally correlated orbital is coupled to a host with a mapped density of states a single a particle dynamics are studied a within a perturbative framework that includes both explicit second a order perturbation ...
below some characteristic condo temperature a a complex many a body state develops in which the impurity spin is completely screened by the host metal a leading at low energies to a a local a fermi a liquid and universal transport properties a being a low a energy phenomenon a the condo effect is of course crucially de...
416
suppose that you have an abstract for a scientific paper we investigate the signatures at the large hadron collider of a minimal model where the dark matter particle is a majorca fermion that couples to the standard model via one or several coloured mediators a we emphasize the importance of the production channel of c...
this decade is being especially prolific in experimental results in the three search strategies a indeed a various experiments currently in operation are setting strong limits on the wimp parameter space and ruling out regions where a dark matter signal could be expected a notably xenon100 excite and lux excite in dire...
417
suppose that you have an abstract for a scientific paper let be a vector space over a field or skew field a and let be its subspace a we study the canonical form problem for bilinear or sesquilinear forms and linear mappings we solve it over and reduce it over all to the canonical form problem for ordinary linear mappi...
define the -by- matrices a excite a a jilin a a a a every square complex matrix is congruent to a direct sum a determined uniquely up to permutation of summand a of matrices of the form in which a a and is determined up to replacement by a web a every square complex matrix is congruent to a direct sum a determined uniq...
418
suppose that you have an abstract for a scientific paper the large and rapidly varying electric and magnetic fields induced by the spectator systems moving at ultrarelativistic velocities induce a charge splitting of directed flow a a of positive and negative pions in the final state of the heavy ion collision a the sa...
special attention is put on tracing the utility of both observables for studying the longitudinal evolution of the expanding matter created in the collision a a phenomenological model analysis is presented a aimed at explaining the space a time features of pion production which we deduced from the observed electromagne...
419
suppose that you have an abstract for a scientific paper the decay of the boson into supersymmetric particles is studied a we investigate how these supersymmetric modes affect the current limits from the betatron and project the expected sensitivities at the lac a employing three representative supersymmetric models a ...
these extra a are broken at some intermediate energy scales between the gut and the electroweak scales a phenomenologically a the most interesting option is the breaking of these a at around tel scales a giving rise to extra neutral gauge bosons observable at the betatron and the large hadron collider a lac a a
420
suppose that you have an abstract for a scientific paper we describe numerical simulations a using the particle a in a cell a pic a and hybrid a pic code asp a to pm hughes it al a a phys a rev a st accel a beams a a a a 110401 a 1999 a a a of the head a on merging of two laboratory supersonic plasma jets a the goals o...
recently initiated experiments excite at los alamo national laboratory a land a aim to form and study astrophysical relevant collisionless shocks via the head a on merging of two supersonic plasma jets a each with order 10-cm spatial scale size a compared to most other modern collisionless shock experiments which use l...
421
suppose that you have an abstract for a scientific paper the aloe experiment at the da -factory has performed a new precise measurement of the pion form factor using initial state radiation events a with photons emitted at small polar angle a results based on an integrated luminosity of 240 pb and extraction of the con...
a in particular a the pion form factor a a defined via a accounts for of the central value and for of the uncertainty in a the aloe experiment already published excite a measurement of with the method described below a using an integrated luminosity of 140 pb a taken in 2001 a henceforth referred to as kloe05 a
422
suppose that you have an abstract for a scientific paper a fuzzy circle and a fuzzy sphere are constructed as subspaces of fuzzy complex projective spaces a of complex dimension one and three a by modifying the laplacians on the latter so as to give unwanted states large eigenvalues a this leaves only states correspond...
even is not ideal since it has curvature effects that drop off as power corrections rather than exponentially as in the case of toroidal geometries a the fuzzy approach does a however a have the advantage of preserving continuous symmetries such as the symmetry of a round and does not suffer from fermion doubling excit...
423
suppose that you have an abstract for a scientific paper we measure the projected rotational velocities of the late a a type hypervelocity stars has and has from high resolution spectroscopy to be of of pm s and 260 of pm s a the slow rotation of has is in principle consistent with having originated in a binary system ...
a a a a a a a a a a a a
424
suppose that you have an abstract for a scientific paper we present an exactly solvable model of a classical dielectric medium that gives an unambiguous local decomposition of field and charge motion and their contribution to the conserved quantities a the result is a set of four branches to the dispersion law that giv...
however a the driving and damping are due to fields that are being changed by the motion of the charges and it is easy to get lost in the rather formal definitions of the of macroscopic of variables and a if we were to construct a complete basis of the system one might wonder how there can be any damping at all a the t...
425
suppose that you have an abstract for a scientific paper we report on a new experimental platform for the measurement of absolute scattering cross a sections a the target atoms are trapped in an optical dipole trap and are exposed to an incident particle beam a the exponential decay of the atom number directly yields t...
the achievable temperature of 100 corresponds to an energy spread of only nev a the above mentioned experiments focus on charged reaction products which can be detected with a position sensitive micro a channel plate a
426
suppose that you have an abstract for a scientific paper a new a improved split a step backward euler a be a method is introduced and analysed for stochastic differential delay equationssddes a with generic variable delay a the method is proved to be convergent in mean a square sense under conditions a assumption a old...
we remark that in a a yen a a depends on how memory values are handled on non a grid points a generally there are two ways a the first is to use piecewise constant interpolation a corresponding to a and the second to use piecewise linear interpolation a in later development a we prefer to assume to cover both cases a a...
427
suppose that you have an abstract for a scientific paper we develop an approach to liquid thermodynamics based on collective modes a we perform extensive molecular dynamics simulations of noble a molecular and metallic liquids and provide the direct evidence that liquid energy and specific heat are well a described by ...
these systems are amenable to perturbation treatment giving corrections to the non a interacting case excite a perturbation approaches have been widely explored to calculate liquid thermodynamic properties but have not been able to agree with experiments a
428
suppose that you have an abstract for a scientific paper the combination of a vortex line in a one a dimensional optical lattice with fermions bound to the vortex core makes up an ultracold superseding a we give a detailed derivation of the way to make this supersymmetric string in the laboratory a in particular a we d...
has been observed excite a bosnia atoms confined in one a dimensional tubes by means of a two a dimensional optical lattice where shown to realize the lib a linger gas excite a
429
suppose that you have an abstract for a scientific paper the effects of cluster diffusion on the submonolayer island density and island a size distribution a where is the density of islands of size at coverage a are studied for the case of irreversible growth of compact islands on a cd substrate a in our model a we ass...
in addition a it has been shown that in the absence of cluster a diffusion and in the are a coalescence regime the island a size distribution a is a satisfies the scaling form a excite where is the average island size a and the scaling function depends on the critical island size. however a in some cases a such as in e...
430
suppose that you have an abstract for a scientific paper there are several physical processes to remove gas from galaxies in clusters a with subsequent starvation and star formation quenching a tidal interactions between galaxies a or tidal stripping from the cluster potential itself a interactions with the hot intro a...
however a they are acting simultaneously with the others a and relative roles are hard to disentangle a since they are efficient only when the cluster is formed a and the ice gathered a have they enough time to act a or have tides acted before a
431
suppose that you have an abstract for a scientific paper by proving graph theoretical versions of green a stokes a gauss a bonnet and poincare a hope a core ideas of undergraduate mathematics can be illustrated in a simple graph theoretical setting a in this pedagogical exposition we present the main proofs on a single...
it is a subgraph generated by the set of vertices directly connected to a denote by the set of complete subgraphs of a
432
suppose that you have an abstract for a scientific paper free 802.15.4 standard is designed for low power and low data rate applications with high reliability a it operates in beacon enable and non a beacon enable modes a in this work a we analyse delay a throughput a load a and end a to a end delay of non a beacon ena...
are being densely populated with sensors a one area of increasing interest is the adaptation of technology to operate in and around human body a
433
suppose that you have an abstract for a scientific paper we consider the problem of hypothesis testing in the situation when the first hypothesis is simple and the second one is local one a sided composite a we describe the choice of the thresholds and the power functions of the score function test a of the general lik...
the case of composite alternative is more difficult to treat and here the asymptotic solution is available in the regular case a it is possible a using a for example a the score function test a set a a to construct the asymptotically a locally a most powerful test a
434
suppose that you have an abstract for a scientific paper measurements of the de haas a van alpha effect have been carried out on the heavy fermion anti a ferromagnet cerhin at temperatures between of my and 500 my under pressure a we present some preliminary results of our measurements to track the evolution of the fer...
cerhin is an anti a ferromagnet a the is of cerhin was the subject of one of our recent publications. in order to confirm the link between the superconducting state and is dimensionality a the is as a function of pressure in cerhin should be measured a
435
suppose that you have an abstract for a scientific paper the study of high energy nuclear collisions has entered a new stage with chic a it therefore seems a good time to ask what we have learned from the experimental results obtained up to now a i recall what we had expected to find when the spa and as programs were s...
then hagedorn excite arrived at a limiting temperature by postulating a self a similar harmonic resonance composition a a resonance consists of resonances which consist of resonances a and so on a the resulting excitation spectrum was later also derived in the dual resonance model excite a with the advent of the quark ...
436
suppose that you have an abstract for a scientific paper we demonstrate that gravitationally lenses quasars are easily recognized using image subtraction methods as time variable sources that are spatially extended a for galactic latitudes a lenses quasars dominate the population of spatially extended variable sources ...
excite for a recent study a a radio imaging surveys of flat a spectrum radio sources a see browne it al a excite a a or searches for anomalous a higher redshift emission lines in galaxy spectra a see bolton it al a
437
suppose that you have an abstract for a scientific paper -mode of polarized anisotropies of the cosmic microwave background is a unique and nearly direct probe of primordial inflation a which can constrain the amplitude of the primordial gravity waves a however a its detection and precise measurement is made difficult ...
this amplitude is expressed by the tensor a to a scalar ratio a a defined as the relative power of primordial gravity waves with respect to that of the scalar perturbations at some pivot scale a chosen here to be equal to mpc a currently a the most stringent upper bound on using temperature anisotropies has been derive...
438
suppose that you have an abstract for a scientific paper salkuyeh proposed the picard a has iteration method to solve the absolute value equation a ave a a which is a class of non a differentiable no a hard problem a to further improve its performance a a nonlinear has a like iteration method is proposed a compared to ...
recently a these problems have been investigated in the literature excite a the ave a a eq:1 a a arises in linear programs a quadratic programs a matrix games and other problems a which can all be reduced to a linear complementarity problem a lip a excite a and the lip is equivalent to the ave a a eq:1 a a a
439
suppose that you have an abstract for a scientific paper we present the current status of cosmic shear studies and their implications on cosmological models a theoretical expectations and observational results are discussed in the framework of standard cosmology and cd scenarios a the potentials of the next generation ...
it is therefore possible to study the universe through a new window which directly probes dark matter instead of light and allows cosmologists to measure cosmological parameters and dark matter power spectrum from weak gravitational distortion a let us assume that the shape of galaxies can be simply characterize by the...
440
suppose that you have an abstract for a scientific paper we numerically investigate the excitation and temporal evolution of oscillations in a two a dimensional coronal arcade by including the three a dimensional propagation of perturbations a the time evolution of impulsively generated perturbations is studied by solv...
the possibility of inferring some plasma parameters a otherwise difficult to measure a and of improving the existing theoretical models is open a see excite for a review a magnetohydrodynamics a mid a is the underlying theory of coronal seismology and it is believed that all these observed oscillations and waves can be...
441
suppose that you have an abstract for a scientific paper the social connections people form online affect the quality of information they receive and their online experience a although a host of socioeconomic and cognitive factors were implicated in the formation of offline social ties a few of them have been empirical...
strong ties are characterized by high frequency of interaction and emotional intimacy that can be found in relationships between family members or close friends a people connected by strong ties share mutual friends excite a forming cohesive social bonds that are essential for providing emotional and material support e...
442
suppose that you have an abstract for a scientific paper we present a detailed analysis of the ionisation state and heavy element abundances in the intergalactic medium a ign a a the civ doublet is shown by of a of the 182 selected optically thin clouds in of so lines of sight a direct metallica calculations have been ...
the detection of ions different from civ in optically thin clouds is made complicated by harder observational conditions a whereas the still too poor knowledge of the ionisation mechanisms which determine the ion abundances in those clouds has often discouraged attempts of metal content estimations as a function of red...
443
suppose that you have an abstract for a scientific paper content delivery success in wireless caching helper networks depends mainly on cache a based channel selection diversity and network interference a for given channel fading and network geometry a both channel selection diversity and network interference dynamical...
motivated by this a caching or are a fetching some popular video contents at the network edge such as mobile hand a held devices or small cells a termed as a local caching a a has been considered as a promising technique to alleviate the network traffic load a as the cache a enabled edge node plays a similar role as a ...
444
suppose that you have an abstract for a scientific paper a amoeba is the image of a subvariety of a complex torus under the argument map to the real torus a we describe the structure of the boundary of the amoeba of a variety a which we relate to its logarithmic limit set a detailed examples of lines in three a dimensi...
amoebae were introduced by passage in a talk in 2004 a and they appear to have many beautiful and interesting properties a for example a amoebae of -discriminants in dimension two are unions of two non a convex polyhedral excite a and a hypersurface amoeba has an associated arrangement of dimension one tori contained i...
445
suppose that you have an abstract for a scientific paper we first show that a large amount of metal a poor gas is stripped from the small magellanic cloud a sec a and fallen into the large magellanic cloud a lac a during the tidal interaction between the sec a the lac a and the galaxy over the last a yrs a we propose t...
2003 a get a grocholski it al a 2006 a get a a
446
suppose that you have an abstract for a scientific paper we present simulations of triton a post a capture orbit that confirm the importance of kodak a type oscillations in its orbital elements a in the context of the tidal orbital evolution model a these variations require average perimeter distances much higher than ...
however a excite noted that the criteria for non a disruptive capture are much stricter than excite calculated a if the original regular satellites of neptune and uranus were similar a a collision with the largest moons a preferred due to their cross a sections a would disrupt triton a with re a accretion on an orbit i...
447
suppose that you have an abstract for a scientific paper the atari and switzer satellites provided an unique opportunity to observe a variety of stars a which are considered as departing from the asymptotic giant branch a age a and have started their post a age evolution recently a most of these stars are absent optica...
the physical mechanism responsible for the change of the spherically a symmetric to an axially a symmetric a or in some cases point a symmetric wind is strongly debated a observations of masers in transition objects often reveal that this morphological change takes place at a very early stage in the post a age phase a ...
448
suppose that you have an abstract for a scientific paper this paper continues a study initiated in excite a on the localization transition of a lattice free field on interacting with a quenched disordered substrate that acts on the interface when its height is close to zero a the substrate has the tendency to localize ...
an important question which arises is thus whether the results concerning the phase transition obtained for a model with homogeneous interactions referred to as a the pure system a a edge the onsager solution of the two dimensional using model a remain valid when a system where randomness of a very small amplitude is i...
449
suppose that you have an abstract for a scientific paper we propose the concept of a terahertz a the a uncooked bolometer based on a a type and a a type grapheme layers a gas a a constituting the absorbing regions a connected by an array of endowed grapheme nanoribbons a gnus a a the gas absorb the the radiation with t...
the interbank absorption prevails over the contraband a dude a absorption a however a in the terahertz a the a range a especially at low the frequencies a the dude absorption can dominate a
450
suppose that you have an abstract for a scientific paper energies of a a and states in neutral a and a a like ions with nuclear charges are calculated using relativistic many a body perturbation theory a reduced matrix elements a oscillator strengths a transition rates and lifetimes are calculated for the of possible a...
third a order robot calculations of transition amplitudes in a a like ions up to =60 were previously performed by excite a in the present paper a we extend the calculations of excite to obtain energies a reduced matrix elements a oscillator strengths a and transition rates for the of possible and of transitions a addit...
451
suppose that you have an abstract for a scientific paper although some of the properties of the caustics in planetary microlensing have been known a our understanding of them is mostly from scattered information based on numerical approaches a in this paper a we conduct a comprehensive and analytic analysis of the prop...
the planetary perturbation occurs when the source star passes close to the caustic a the caustic represents the set of source positions at which the magnification of a point source becomes infinite a
452
suppose that you have an abstract for a scientific paper we report on a star a a a hmm a newton a and a swift a observations of the gamma a ray binary mfg j1018.6 a we measure the orbital period to be days using a swift a data spanning 1900 days a the orbital period is different from the 2011 gamma a ray measurement wh...
since most of the energy output of a gamma a ray binary is in the gamma a ray band a current theoretical studies focus on explaining the high energy emission properties a the gamma a ray emission models can be categorized into two classes a microquasar models a edge a a a a a
453
suppose that you have an abstract for a scientific paper searching for the ultra high energy cosmic rays and neutrinos of is of great cosmological importance a a powerful technique is to search for the cerenkov radio emission caused by their or the neutrinos impinging on the lunar regolith a we examine in this paper fe...
later a dagkesamanski and zheleznykh excite noted that the particles impinging on the lunar regolith at of m-20 a deep layers of the moon will give rise to radio pulses of nanosecond a is a durations a the large surface area of the moon effectively provides a large surface area for detection of the rare the particles a
454
suppose that you have an abstract for a scientific paper we examine a new multiverse scenario in which the component universes interact a we focus our attention to the process of true a vacuum nucleation in the false vacuum within one single element of the multiverse a it is shown that the interactions lead to a collec...
through quantum cosmology arguments excite a is the string landscape scenario compatible with predictability excite a do the universes of the multiverse interact excite a see also ref a
455
suppose that you have an abstract for a scientific paper mesoscopic hydrodynamic equations are solved to investigate the dynamics of nanodroplets positioned near a topographic step of the supporting substrate a our results show that the dynamics depends on the characteristic length scales of the system given by the hei...
such heterogeneities may substantially change the wetting behavior of these surfaces excite a which is not necessarily detrimental with respect to envisaged applications a certain topographically structured surfaces are superhydrophobic or superhydrophilic a in the first case droplets roll off these substrates a instea...
456
suppose that you have an abstract for a scientific paper we investigate the use of the multiple optimised parameter estimation and data compression algorithm a moped a for data compression and faster evaluation of likelihood functions a since moped only guarantees maintaining the fisher matrix of the likelihood at a ch...
a however a its compression of the data and consequent much faster likelihood evaluation does provide orders of magnitude improvement in auntie a in excite a the authors demonstrate the method by analysing the spectra of galaxies and in excite they illustrate the benefits of moped for estimation of the cab power spectr...
457
suppose that you have an abstract for a scientific paper due to its proximity a the mass of the supermassive black hole in the nucleus of andromeda galaxy a my a a the most massive black hole in the local group of galaxies a has been measured by several methods involving the kinematics of a stellar disk that surrounds ...
however a excite a using observations from the a hubble space telescope a a a hot a a a showed that the galaxy possesses a double nucleus a the two components being called pm a the brightest one a and pm a located a approximately a at the center of the bulge a a these two components are separated by about a
458
suppose that you have an abstract for a scientific paper recent literature on the aharonov a boom effect has raised fundamental questions on the classical correspondence of this effect and the physical reality of the electromagnetic potentials in quantum mechanics a reappraisal on feynman a approach to the classical li...
arbitrariness in choosing the potentials in classical electrodynamics embodied in the gauge transformation and the consequent invariance of the lorentz a maxwell theory unambiguously demonstrate the fact that the potentials are just auxiliary mathematical tools in the classical theory a the principle of gauge invarianc...
459
suppose that you have an abstract for a scientific paper motivated by recent scanning tunnelling and photoemission spectroscopy measurements on self a organized gold chains on a germanium surface we investigate the local single a particle spectral properties of luttinger liquids a in the first part we use the colonizat...
is cut off by and one finds the scaling behavior with a -dependent scaling function in which the two energy scales and only enter via their ratio excite a these results were exclusively obtained using colonization within the toyonaka a luttinger a to a model excite a using the modern language of renormalization group a...
460
suppose that you have an abstract for a scientific paper the motion of two attractively interacting atoms in an optical lattice is investigated in the presence of a scattering potential a the initial wavefunction can be prepared by using tightly bound exact two a particle eigenfunction for vanishing scattering potentia...
the bound two a particle states in the lattice approach case without lattice for suitable parameters a this can be used to quantitatively test the -particle predictions of ref a excite via exact numeric on the two a particle level for which a solution is simply a dimer a
461
suppose that you have an abstract for a scientific paper transverse momentum integrated multiplicities in the central region of collisions at lac energies satisfy kobe a nielsen a olsen scaling a we attempt to relate this finding to multiplicity distributions of soft gluons a no scaling emerges if the effective theory ...
a semi a hard of saturation scale of emerges a it corresponds to the transverse momentum where the phase space density of produced gluons is of order a the mean multiplicity per unit rapidity in high a energy collisions is then a
462
suppose that you have an abstract for a scientific paper we report on the detection in sloan digital sky survey data of a -long tidal stream of stars a extending from ursa major to cancer a the stream has no obvious association with the orbit of any known cluster or galaxy a the contrast of the detected stream is great...
moreover a such tidal tails are dynamically very cold excite a making them useful for constraining not only the global galactic potential a but also its lumpiness excite a substantial tidal streams have now been found associated with at least two of the eight globular clusters in the sass area a pal a excite and not 54...
463
suppose that you have an abstract for a scientific paper we propose algorithms a based on the multi a scale entanglement renormalization anat a to obtain the ground state of quantum critical systems in the presence of boundaries a impurities a or interfaces a by exploiting the theory of minimal updates a ref a a go eve...
a it does not rely on fourier space analysis a and it is a a non a perturbative a approach a that is a it can handle interactions of any strength a a as a result a it has a wide range of applicability a from quantum criticality excite to emergent topological order excite a from frustrated antiferromagnets excite to int...
464
suppose that you have an abstract for a scientific paper high- galaxy redshift surveys open up exciting possibilities for precision determinations of neutrino masses and inflationary models a the high- surveys are more useful for cosmology than low- ones owing to much weaker non a linearities in matter clustering a red...
fluctuations in different cosmic fluids a dark matter a photons a baryons a and neutrinos a imprint characteristic features in their power spectra a owing to their interaction properties a thermal history a equation of state a and speed of sound a a remarkable example is the acoustic oscillation in the photon a baryon ...
465
suppose that you have an abstract for a scientific paper we study the changes in the fermi surface with electron doping in the lafeaso superconductors with density a functional supercool calculations using the linearized augmented planewave a law a method a the supercool calculations with explicit of substitution are c...
one important question is what happens to the electronic structure when the extra electrons are added to the system via the fluorine pants a a number of band structure studies have been performed to date to address these questions a however a most of them use either the simple rigid a band picture of shifting the fermi...
466
suppose that you have an abstract for a scientific paper an adequate characterization of the dynamics of hamiltonian systems at physically relevant scales has been largely lacking a here we investigate this fundamental problem and we show that the finite a scale hamiltonian dynamics is governed by effective dynamical i...
of asymptotic of means in the limit of large time scales and small length scales a but in realistic situations a the time and length scales are limited a in the case of hyperbolic systems a this is not a constraint because the a statistical a self a similarity of the underlying invariant sets guarantees the fast conver...
467
suppose that you have an abstract for a scientific paper highly variable -ray pulses and a a ray flares in grab light curves can result from external shocks rather than central engine activity under the assumption that the grab blast a wave shell does not spread a acceleration of cosmic rays to eve energies can take pl...
approximately % of the swift grabs display rapid a a ray declines a and an additional % display features unlike simple blast wave model predictions excite a we make three points in this paper a a a
468
suppose that you have an abstract for a scientific paper a bayesian compressive sensing framework is developed for video reconstruction based on the color coded aperture compressive temporal imaging a cacti a system a by exploiting the three dimension a cd a tree structure of the wavelet and discrete cosine transformat...
the number of high a speed frames recovered from a coded a exposure measurement depends on the speed of video modulation a within the cacti framework a modulating the video times per second corresponds to moving the mask pixels within the integration time a
469
suppose that you have an abstract for a scientific paper we introduce the class of intermediate mass binaries named double periodic variables a dps a a characterized by orbital photometric variability a ellipsoidal or eclipsing a in time scales of few days and a long photometric cycle lasting roughly of times the orbit...
after the discovery of additional variability in v393sco a pilecki a szczygiel 2007 a a we recognized it as the first div in our galaxy a later we found that in the past an additional long cycle was also reported for the galactic div amon a lorenzo 1985 a a
470
suppose that you have an abstract for a scientific paper we discuss the possibilities of the basel models in its lowest temperature boundary a t a for cool giants a to provide the t of age stars a we present the first step of our work a by comparing our predictions for the age star a francis with the results of lorenz ...
although they are highly variable a their determination from static models such as assumed in the basel library can be justified as a first approximation a in order to explore the capabilities of the basel library a jejune a cuisine a user 1997 a 1998 and references therein a see also lastennet a jejune a cuisine a the...
471
suppose that you have an abstract for a scientific paper we study nonlinear random resistor diode networks at the transition from the non percolating to the directed percolating phase a the resistor a like bonds and the diode a like bonds under forward bias voltage obey a generalized ohm a law a a based on general grou...
the irregular medium is given by a a say hypercube a lattice in which bonds between nearest neighbouring sites are randomly occupied with a probability a the influence corresponds to an external current a which is injected at a terminal site and withdrawn at another terminal site a
472
suppose that you have an abstract for a scientific paper we investigate the environments of quasars such as number distribution of galaxies using a semi a analytic model which includes both galaxy and quasar formations based on the hierarchical clustering scenario a we assume that a supermassive black hole is fuelled b...
is required a it has become widely accepted that quasars are fuelled by accretion of gas onto supermassive black holes a smash a in the nuclei of host galaxies since excite proposed this idea on quasars a
473
suppose that you have an abstract for a scientific paper the entropy of an ergodic source is the limit of properly rescaled block entries of sources obtained applying successive non a sequential recursive pairs substitutions, a in this paper we prove that the cross entropy and the fullback a legible divergence can be o...
meghan showed how to estimate the al divergence between two sources a using the parsing scheme of lz77 algorithm excite on two finite length realizations a they proved the consistence of the method by showing that the estimate of the divergence for two markova sources converges to their relative entropy when the length...
474
suppose that you have an abstract for a scientific paper we explore the spectral properties of the time a dependent maxwell a equations for a plane interface between a metamaterial represented by the dude model and the vacuum a which fill respectively complementary half a spaces a we construct explicitly a generalized ...
thanks to these negative electromagnetic coefficients a waves can propagate at the interface between such a negative material and a usual dielectric material excite a these waves a often called a surface plasmin polarities a a are localized near the interface and allow then to propagate signals in the same way as in an...
475
suppose that you have an abstract for a scientific paper when integrals in the standard remain a weinberg method are evaluated for the case of a realistic model of a doubly barred galaxy a their modifications introduced by the second rotating pattern are in accord with what can be derived from a simple extension of tha...
1995 a a therefore fairly old stars must contribute to their light a the relative orientation of the two bars in doubly barred galaxies is random a therefore it is likely that the bars rotate with different pattern speeds a
476
suppose that you have an abstract for a scientific paper under the assumptions that molecular clouds are nearly spatially and temporally isothermal and that the density peaks a of cores of a within them are formed by turbulent fluctuations a we argue that cores can not reach a hydrostatic a or magneto a static a state ...
1987 a a or finite a central density structures a truncated at some finite radius and confined by the pressure of some external medium a generally assumed to be at higher temperatures and lower densities than the isothermal core a ebert 1955 a bonner 1956 a a more recently a the equilibrium of non a asymmetric configur...
477
suppose that you have an abstract for a scientific paper the numerical convergence of smoothed particle hydrodynamics a spa a can be severely restricted by random force errors induced by particle disorder a especially in shear flows a which are ubiquitous in astrophysics a the increase in the number of neighbours when ...
the core of spa is the density estimator a the fluid density is a estimated a from the masses and positions of the particles via a the symbol denotes an spa a estimate a a where is the a smoothing kernel a and the a smoothing scale a a which is adapted for each particle such that a with the number of spatial dimensions...
478
suppose that you have an abstract for a scientific paper we report a detailed examination of the fine structure inside flare ribbons and the temporal evolution of this fine structure during the x2.5 solar flare that occurred on 2004 november of a we examine elementary bursts of the a a emission lines seen as local tran...
statistical studies of solar flares have also shown that various kinds of physical parameters of flares a like peak intensity a flare duration a waiting time of soft a a ray a sir a emissions between discrete events a are well described with power a law distributions a edge a a a a a a a a a a
479
suppose that you have an abstract for a scientific paper we study the quantum phase transition between belgian and non a belgian phases in an extended kitten spin model on the honeycomb lattice a where the periodic boundary condition is applied by placing the lattice on a torus a our analytical results show that this s...
recently a it was shown excite that the topological quantum phase transition in the kitten spin model can be characterized by confocal a string order parameters a in an appropriate dual representation a this order parameter can become local and the basic concept of landau theory of continuous phase transition is also a...
480
suppose that you have an abstract for a scientific paper dilute fermi systems with large -wave scattering length exhibit universal properties if the interparticle spacing greatly exceeds the range of the underlying two a body interaction potential a in this regime a is the only relevant length scale and observables suc...
a meshach resonance arises due to the coupling of two born a oppenheimer potential curves coupled through a hyperfine hamiltonian a and requires a in general a a multi a channel description a for -wave interacting systems a meshach resonances can be classified as broad or narrow excite a whether a resonance is broad or...
481
suppose that you have an abstract for a scientific paper scattering of two baryons in the large- gross a never model via the time a dependent dirac a hatred a rock approach has recently been solved in closed analytical form a here a we generalize this result to scattering processes involving any number and complexity o...
however a it exhibits many non a trivial features characteristic for relativistic quantum fields such as covariance a renormalizability a asymptotic freedom a dimensional transmutation a spontaneous symmetry breaking a interacting dirac sea a it is also one of the few models known where most of the non a perturbative q...
482
suppose that you have an abstract for a scientific paper wikipedia is a free internet encyclopedia with an enormous amount of content a this encyclopedia is written by volunteers with various backgrounds in a collective fashion a anyone can access and edit most of the articles a this open a editing nature may give us p...
the emergence of information technology has opened a new era of publishing traditional encyclopedias on the world wide web excite a which offers a variety of references and up a to a date information a although these new media can reduce the publication price a encyclopedia editing is still costly a
483
suppose that you have an abstract for a scientific paper the sign change of the slope of the directed flow of baryons has been predicted as a signal for a first order phase transition within fluid dynamical calculations a recently a the directed flow of identified particles has been measured by the star collaboration i...
as they are achieved at the large hadron collider a lac a and the relativistic heavy ion collider a chic a a the slope of the traditional directed flow is close to zero at midrapidity due to the almost perfect transparency of the colliding nuclei a the small negative slope of charged particles a mostly pions a at top c...
484
suppose that you have an abstract for a scientific paper we present a phenomenological theory of the interplay between nematic order and superconductivity in the vicinity of a vortex induced by an applied magnetic field a nematic order can be strongly enhanced in the vortex core a as a result a the vortex cores become ...
recently a the structure of the vortex cores in the mixed state of clean fees films was studied by means of scanning tunnelling microscopy a st a excite a strong anisotropy was observed in the zero bias conductance map around the cores a which have an eccentricity of the order of unity a
485
suppose that you have an abstract for a scientific paper accelerator neutrino oscillation experiments seek to make precision measurements of the neutrino flavor oscillations in order to determine the mass hierarchy of neutrinos and to search for up violation in neutrino oscillations a these experiments are currently pe...
uncertainties on differences between these cross a sections for muon and electron neutrinos will contribute to experimental uncertainties in these flavor oscillation measurements a interactions of the charged a current with fundamental fermions a such as a have no uncertainties in the differences between the reactions ...
486
suppose that you have an abstract for a scientific paper graphical model learning and inference are often performed using bayesian techniques a in particular a learning is usually performed in two separate steps a first a the graph structure is learned from the data a then the parameters of the model are estimated cond...
nodes and the corresponding variables are usually referred to interchangeably a the a edges a
487
suppose that you have an abstract for a scientific paper within the bored cd sum rule approach at finite baryon density we study the role of the four a quark condensates for the modifications of the vector mesons a and in nuclear matter a we find that in a medium modifications of the and mesons are essentially dominate...
there are indeed various theoretical indications concerning an important sensitivity of the meson spectral density on the partial restoration of the chiral symmetry in a hot a dense nuclear medium a for instance a at finite temperature the vector and axial a vector meson correlations become mixed in accordance with in ...
488
suppose that you have an abstract for a scientific paper we use galaxies detected in a deep ultraviolet hmm a newton optical monitor image and a model that predicts us galaxy counts based on local counts and evolution parameters to constrain galaxy evolution to z=1.2 a the of square 2000 a uvea filter a image was taken...
measurements of galaxy number counts in the ultraviolet have been made by excite using the focal balloon a borne us telescope a excite and excite using hot archival fields a these data have been interpreted with models that predict number counts based on galaxy spectral energy distributions a see a a and luminosity fun...
489
suppose that you have an abstract for a scientific paper we study the possible existence of confined quark matter in the interior of neutron stars using the name jon a casino model to describe the quark phase a we find that typical neutron stars with masses around 1.4 solar masses do not possess any confined quark matt...
such transitions have received much attention in heavy ion physics as well as in the context of neutron stars which provide a unique environment to study cold matter at supernuclear densities excite a even though a confinement phase transition seems intuitively evident at large enough densities a from a theoretical poi...
490
suppose that you have an abstract for a scientific paper the main purpose of this article is to extend some of the ideas from schubert calculus to the more general setting of hamiltonian torus actions on compact symplectic manifolds with isolated fixed points a given a generic component of the moment map a which is a m...
if is a generic a a that is a if for each weight in the symplectic representation for every in the fixed set a then is a morse function with critical set a given a the negative tangent bundle is a representation with no fixed sub a bundle a
491
suppose that you have an abstract for a scientific paper we study physics concerning the cosmological constant problem in the framework of effective field theory and suggest that a dominant part of dark energy can originate from gravitational corrections of vacuum energy a under the assumption that the classical gravit...
the third one is that the experimental value of is estimated as where is the newton constant a and a a from the observation that the expansion of present universe is accelerating excite a the energy density defined by is referred as energy density a and its existence has been a big mystery a the pieces of puzzle are no...
492
suppose that you have an abstract for a scientific paper present and planned experiments motivate new theoretical study of properties of light flavoured pseudoscalar meson decays a an overview including details on two a loop calculation in limit is given a chiral perturbation theory a radiative decay of a higher a orde...
the meson being the lightest meson can not decay to other harmonic states a its dominant decay mode a with more than 98% probability a is and is connected with the adler a bell a jackie triangle anomaly excite a
493
suppose that you have an abstract for a scientific paper we consider the hypothesis of a limiting minimal curvature in gravity as a way to construct a class of theories exhibiting late a time cosmic acceleration a guided by the minimal curvature conjecture a mac a we are naturally lead to a set of scalar tensor theorie...
this is the possibility we consider in this paper a our goal is to construct a toy model that represents a late a time accelerating universe using a new a possibly fundamental a principle a
494
suppose that you have an abstract for a scientific paper most nuclear physics ranges from insensitive to relatively insensitive to many a nucleon forces a the dominant ingredient in calculations of nuclear properties is the nucleon a nucleon potential a three a nucleon forces nevertheless play an important role in nucl...
since that time we have relied on field a theoretic techniques a phenomenology a and sophisticated symmetry arguments to construct info a and the most modern and advanced experimental facilities have recently been used to validate these forces a in a very real sense we are fortunate that three a nucleon potentials are ...
495
suppose that you have an abstract for a scientific paper the measurement of doppler velocity shifts in spectra is a ubiquitous theme in astronomy a usually handled by computing the cross a correlation of the signals a and finding the location of its maximum a this paper addresses the problem of the determination of wav...
the sass has also obtained spectra for about 200,000 galactic stars a and it is now being extended at lower galactic latitudes by segue with at least as many spectra a rocks 2005 a danny 2005 a a another ongoing galactic survey a rave a is expected to collect high a resolution spectra for a million stars by 2011 a stei...
496
suppose that you have an abstract for a scientific paper recent experimental results on the harmonic structure of the photon and on the color singlet exchange in strong interaction processes are reviewed a at the let and hera colliders a complementary and consistent measurements have been achieved on the quark a gluon ...
photons are emitted by the leptons which gives access to the harmonic structure of almost real photons excite as well as highly virtual photons a the measurements to obtain information on the harmonic state of the photons discussed here are a a the photon structure function from deep inelastic electron
497
suppose that you have an abstract for a scientific paper we present a new scheme for modelling the broad line region in active galactic nuclei a it involves photoionization calculations applied to a number of variable emission lines at a all times we demonstrate how fitting all lines simultaneously provide strong const...
extensive monitoring campaigns a during the last decade a have produced several high quality data sets a they include the time dependence of the multi a wavelength continuum a as well as the change in line fluxes and line profiles as a function of time a for a review see a horne these proceedings a peterson 1993 a neth...
498
suppose that you have an abstract for a scientific paper we define a volume limited sample of over 14,000 early a type galaxies a eggs a selected from data release six of the sloan digital sky survey a the density of environment of each galaxy is robustly measured a by comparing narrow band spectral line indices with r...
a de la rosa it al a 2007 a palazzi it al a 2006 a jimenez it al a
499
suppose that you have an abstract for a scientific paper we study some generic properties of partially hyperbolic symplectic systems with cd center a we prove that generically a every hyperbolic periodic point has a transverse homoclinic intersection for the maps close to a direct a skew product of an anosov diffeomorp...
is called a a heteroclinic intersection a a a a homoclinic intersection a if a a note that the intersection may not be a transverse a