نتایج جستجو برای: spreading coefficient

تعداد نتایج: 201673  

Journal: :مرتع و آبخیزداری 0
محسن پادیاب دانشجوی دکتری آبخیزداری دانشکدة منابع طبیعی، دانشگاه تهران سادات فیض نیا استاد دانشکدة منابع طبیعی، دانشگاه تهران حسن احمدی استاد گروه آبخیزداری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران اردشیر شفیعی عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان کهگیلویه و بویراحمد

evaluation of changes present in soil and water resources due to operation implement of floodwater spreading is necessary to assess their positive or negative resultant effect. rate of the internal sediment to diversion spreader channels, surface sedimentation and aggregation of the spreading field depth are most important effective attributes on the yield of floodwater spreading systems. these...

2010
M. Mulansky

We study the spreading of initially localized states in a nonlinear disordered lattice described by the nonlinear Schrödinger equation with random on-site potentials —a nonlinear generalization of the Anderson model of localization. We use a nonlinear diffusion equation to describe the subdiffusive spreading. To confirm the self-similar nature of the evolution we characterize the peak structure...

Journal: :Computational Intelligence 2005
Randolph M. Jones Pat Langley

s International, 48, 3025B, Doctoral dissertation, Yale University, 1986. HENDLER, J. 1986. Integrating marker-passing and problem-solving: A spreading-activation approach to improved choice in planning, Dissertation Abstracts International, 47, 2059B, Doctoral dissertation, Brown University. HOFSTADTER, D. R. 1995. Fluid Concepts and Creative Analogies: Computer Models of the Fundamental Mecha...

1997
Fabio Crestani

We report on the design of a system that enables the user to perform retrieval of items of interest both by browsing an automatically constructed very large hypertext and by spreading activation on the hypertext network itself. It is this second option that is particularly interesting since it enables the user to retrieve items that have not been visited, but that are similar to items flagged a...

1987
James A. Hendler

The cognitive modeling community is presently divided between two different approaches to the spread of activation through networks. One school holds that symbolic information must be progagated, the other that numeric weights are used and activation spreads in a more analog manner. In this paper we describe a mechanism which allows the two processes to be merged via the introduction into the s...

2005
Nikolaos Nanas Victoria Uren John Domingue Anne de Roeck

This paper presents Nootropia, a self-organising information agent, capable of evaluating documents according to a user’s multiple and changing interests. In Nootropia, a hierarchical term network that takes into account term dependencies is used to represent a user’s multiple topics of interest. Non-linear document evaluation is established on that network based on a directed spreading activat...

1998
JEAN-MARC DEWAELE

The usual source of crosshnguistic influence in the interlanguage of a person learning a first foreign language (L2) is quite obviously his/her LI Pinpointing the source of crosshnguistic influences in the interlanguage of a multilingual speaker is less straightforward The main source of crosshnguistic influence m the L3 of a speaker is not automatically, as the present study shows, the LI of t...

Journal: :Journal of phonetics 2012
Benjamin Parrell

This study examines the phenomenon of post-aspirated voiceless stops in Western Andalusian Spanish in /s/ + voiceless stop sequences. Previous analyses have proposed that the post-aspiration arises through a reorganization of the glottal spreading gesture for /s/ and the oral constriction gesture for the stop. This theory is tested by steadily increasing speakers' production rate, which has bee...

2009
Natalia Rakhlin

The goal of this study is to introduce a new type of evidence to the debate on the nature of what is known in the literature as quantifier spreading (q-spreading), also referred to as the “symmetry error”. Since the work of Inhelder and Piaget (1964), it has been known that until the age of 7–8, children’s responses are frequently different from those of adults when judging the truth-value of s...

Flood spreading schemes have been implemented in Iran to control floods, feed groundwater aquifers, improve vegetation, and increase pasture production. The proper evaluation of these projects is possible when the scheme is evaluated based on the opinions of residents and users. The purpose of this study is to evaluate the effectiveness of the Jajarm flood spreading from the neighboring village...

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