11,023 research outputs found
Stream Flow Prediction by Remote Sensing and Genetic Programming
A genetic programming (GP)-based, nonlinear modeling structure relates soil moisture with synthetic-aperture-radar (SAR) images to present representative soil moisture estimates at the watershed scale. Surface soil moisture measurement is difficult to obtain over a large area due to a variety of soil permeability values and soil textures. Point measurements can be used on a small-scale area, but it is impossible to acquire such information effectively in large-scale watersheds. This model exhibits the capacity to assimilate SAR images and relevant geoenvironmental parameters to measure soil moisture
Objašnjenje mogućeg negativnog kvadrata mase neutrina
The recent data of mass-square for the electron neutrino and the muon neutrino are probably negative. Motivated by this fact, we have further investigated the hypothesis that neutrinos are superluminal fermions. A tachyonic Dirac-type equation is further studied. This equation is equivalent to two Weyl equations coupled together via nonzero mass while respecting the maximum parity violation. It reduces to one Weyl equation when the neutrino mass becomes zero.Nedavni su ishodi mjerenja kvadrata masa elektronskog i mionskog neutrina vjerojatno negativne vrijednosti. Ti su nas podaci pobudili nastaviti istraživanja hipoteze da su neutrini nadsvjetlosne čestice (tahioni). Proučavamo Diracovu jednadžbu tahionskog tipa. Ta je jednadžba jednakovrijedna dvjema Weylovim jednadžbama vezanim preko mase različite od nule, uz zadržavanje najvećeg kršenja parnosti. One se svode na jednu Weylovu jednadžbu ako je masa neutrina jednaka nuli
Objašnjenje mogućeg negativnog kvadrata mase neutrina
The recent data of mass-square for the electron neutrino and the muon neutrino are probably negative. Motivated by this fact, we have further investigated the hypothesis that neutrinos are superluminal fermions. A tachyonic Dirac-type equation is further studied. This equation is equivalent to two Weyl equations coupled together via nonzero mass while respecting the maximum parity violation. It reduces to one Weyl equation when the neutrino mass becomes zero.Nedavni su ishodi mjerenja kvadrata masa elektronskog i mionskog neutrina vjerojatno negativne vrijednosti. Ti su nas podaci pobudili nastaviti istraživanja hipoteze da su neutrini nadsvjetlosne čestice (tahioni). Proučavamo Diracovu jednadžbu tahionskog tipa. Ta je jednadžba jednakovrijedna dvjema Weylovim jednadžbama vezanim preko mase različite od nule, uz zadržavanje najvećeg kršenja parnosti. One se svode na jednu Weylovu jednadžbu ako je masa neutrina jednaka nuli
Signature inversion for monotone paths
The aim of this article is to provide a simple sampling procedure to
reconstruct any monotone path from its signature. For every N, we sample a
lattice path of N steps with weights given by the coefficient of the
corresponding word in the signature. We show that these weights on lattice
paths satisfy the large deviations principle. In particular, this implies that
the probability of picking up a "wrong" path is exponentially small in N. The
argument relies on a probabilistic interpretation of the signature for monotone
paths
Students' View of Feedback on Electronic Assignments
With the rapid development of technology, more
and more universities put courses online. Electronic
submissions become ordinary and seem largely reasonable
choices. Yet, those instructors who employ blended
approaches to interacting with students may also require
students to submit their assignments electronically even
though instructors and students meet on campus regularly as
scheduled. Providing electronic feedback (e-feedback) by
instructors becomes one of the central concerns in higher
education. However, there is limited research in students’
views of e-feedback provided on submissions. This study, part
of a large study, was intended to fill the void. All
undergraduate students from a Midwestern university were
surveyed regarding what they support: e-feedback and
handwritten feedback and what their perceptions on efeedback
based on the following five categories: accessibility,
timeliness, legibility, quality and personal. Data were analyzed
quantitatively and qualitatively. The results show that the
majority of the respondents preferred e-feedback for
accessibility, timeliness, and legibility. While there were not as
many supporters as those for accessibility, timeliness, and
legibility, the theme of quality was supported more than that
of personal. In this article, addressed are also limitations,
educational implications, and future research suggestions.
Keywords: feedback, electronic feedback, instructors,
studen
Subsurface Upflow Wetland System for Nutrient and Pathogen Removal in Wastewater Treatment Systems
Methods and systems for a subsurface upflow wetland for wastewater treatment that includes a series of parallel treatment cells, each cell including from bottom to top, a layer of gravel, a layer of sand over the gravel to remove pathogens from a septic effluent, a pollution control medium above the sand later to remove nurtients, total suspended solid, and biochemical oxygen demand and a growth media mixture layered on top of the pollution control pmedia to grow plants, and a gravity distrubition system to distribute effluent to the series of parallel treatment cells. The pollution control medium inlcudes at least one recycled material and at least one naturally occuring material. In an embodiment in includes recycled tire crumb, sand, and limestone or recycled tire crumb, compost, sand and limestone
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