نتایج جستجو برای: propagation

تعداد نتایج: 107452  

ژورنال: آبزیان زینتی 2019
hatefi, shima, Nahavandi, Reza,

Undoubtedly having lush and interesting plants in the aquarium, in addition to beauty, has a favorable effect on fish. These plants, in addition to create beauty in the aquarium space, provide an environment close to the natural habitat of ornamental fish. The benefits of using aquatic plants in the aquarium include adjusting the water hardness and pH, increasing the dissolved oxygen in the wat...

Saeed Gholizadeh, Seyed Mohammad Seyedpoor,

An efficient methodology is proposed to find optimal shape of arch dams on the basis of constrained natural frequencies. The optimization is carried out by virtual sub population (VSP) evolutionary algorithm employing real values of design variables. In order to reduce the computational cost of the optimization process, the arch dam natural frequencies are predicted by properly trained back pro...

Journal: :CoRR 2014
Marion Neumann Roman Garnett Christian Bauckhage Kristian Kersting

We introduce propagation kernels, a general graph-kernel framework for eXciently measuring the similarity of structured data. Propagation kernels are based on monitoring how information spreads through a set of given graphs. They leverage early-stage distributions from propagation schemes such as random walks to capture structural information encoded in node labels, attributes, and edge informa...

2003
Mark A. Paskin

Rao–Blackwellization is an approximation technique for probabilistic inference that flexibly combines exact inference with sampling. It is useful in models where conditioning on some of the variables leaves a simpler inference problem that can be solved tractably. This paper presents Sample Propagation, an efficient implementation of Rao–Blackwellized approximate inference for a large class of ...

Maryam Jafarkhani-Kermani Pegah Khosravi Somayeh Kavand

Rosa persica with a distinctive red eye is a good candidate for addition to the breeding pool of roses. In order to optimize micropropagation of R. persica, three culture media (MS, QL and VS) were compared. The maximum growth rate was observed in the VS medium. Addition of FeEDTA (Fe: 65.4 mg/l), calcium gluconate (Cg: 2.7 g/l) and Gamborg vitamins (B5) instead of VS vitamins, alone or in comb...

Journal: :journal of solid mechanics 0
p.k vaishnav department of applied mathematics, indian school of mines, dhanbad-826004, india s kundu department of applied mathematics, indian school of mines, dhanbad-826004, india s.m abo-dahab department, qena faculty of science, egypt a saha department of applied mathematics, indian school of mines, dhanbad-826004, india

the present paper studies the possibility of propagation of torsional surface waves in an inhomogeneous anisotropic layer lying between two heterogeneous half-spaces (upper and lower half-space). both the half-spaces are assumed to be under compressive initial stress. the study reveals that under the assumed conditions, a torsional surface wave propagates in the medium. the dispersion relation ...

Journal: :international journal of marine science and engineering 2012
a. h. javid m. abbaspour s. a. mirbagheri h. janfeshanaraghi

the study of wave and its propagation on the water surface is among significant phenomena in designing quay, marine and water structures. therefore, in order to design structures which are exposed to direct wave forces, it is necessary to study and simulate water surface height and the wave forces on the structures body in different boundary conditions. in this study, the propagation of static ...

Journal: :به زراعی کشاورزی 0
حسن حاج نجاری استادیار پژوهش بخش تحقیقات باغبانی، مؤسسة تحقیقات اصلاح و تهیۀ نهال و بذر، کرج ـ ایران محیالدین پیرخضری پژوهشگر بخش تحقیقات باغبانی، مؤسسة تحقیقات اصلاح و تهیۀ نهال و بذر، کرج ـ ایران داریوش آتشکار مربی پژوهش بخش تحقیقات باغبانی، مؤسسة تحقیقات اصلاح و تهیۀ نهال و بذر، کرج ـ ایران

using apple clonal rootstocks is necessary for improving crop efficiency in apple orchards. after graftingof apple cultivars on malling rootstocks, the extra parts of the rootstock was used as stem cuttings. apical,middle and basal parts of these shoots were used as cuttings. two propagation conditions, greenhouse andnursery and three concentrations of indole-3- butyric acid (iba) on rooting, c...

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