نتایج جستجو برای: critical density
تعداد نتایج: 870366 فیلتر نتایج به سال:
A signed bipartite (simple) graph (G,σ) is said to be C−4-critical if it admits no homomorphism C−4 (a negative 4-cycle) but each of its proper subgraphs does. To motivate the study graphs, we show that notion 4-coloring graphs and captured, through simple operations, by C−4. In particular, 4-color theorem equivalent to: Given a planar G, obtained from G replacing edge with path length 2 maps W...
in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...
Critical Current Density Estimated from the Flux Density Distribution in Bi2Sr2CaCu2Ox Polycrystals.
Cepstral features derived from power spectrum are widely used for automatic speech recognition. Very little work, if any, has been done in speech research to explore phasebased representations. In this paper, an attempt is made to investigate the use of phase function in the analytic signal of critical-band filtered speech for deriving a representation of frequencies present in the speech signa...
nowadays enhancing critical thinking in learners is considered one of the foreign language teachers’ tasks due to its high position in foreign language classrooms. when it comes to selecting materials for language classrooms, there are obviously some criteria that teachers should apply. the present study aimed at a critical thinking based analysis of ten picture story books and ten folktales th...
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