Báo cáo toán học: "A New Method to Construct Lower Bounds for Van der Waerden Numbers" pdf
Báo cáo toán học: "A New Method to Construct Lower Bounds for Van der Waerden Numbers" pdf
... Cyclic Zipper Method, a procedure to construct lower bounds for
Van der Waerden numbers. Using this method we improved seven lower bounds.
For natural numbers r, k and n a Van der Waerden certificate ... presented a method to construct lower bounds for Van der Waerden
numbers. The final results are shown in table 4.
Table 4: Known Van der Wae...
Báo cáo toán học: " A new approach to investigate the interactions between sediment transport and ecotoxicological processes during flood events" ppt
... practices for waterways or harbours.
Therefore, a combined experimental methodology between hydraulic engineers and ecotoxicologists was
developed to investigate the ecological and toxicological relevance ... ontaminants and the e cotoxicological effective-
ness in both in vi tro and in vivo systems) (Figure 1).
Therefore, this methodolog y presents considerable
advantages for a better...
Báo cáo toán học: "A New Approach to the Dyson Coefficients" doc
... GoodDyson,
Lv, Xin and Zhou [7] found two closed-form expressions for M that has a square in the
numerator. Moreover, by generalizing Gessel-Xin’s method [3] for proving the Zeilberger-
Bressoud q-Dyson ... de-
scribed an algorithm that automatically conjectures and proves clo sed-form expressions.
Later, Sills [9] extended Good’s idea and obtained the closed-form expressions for M be...
Báo cáo toán học: "A semigroup approach to wreath-product extensions of Solomon’s descent algebras" pdf
... equivalent to the formula for multiplication inside
the generalized descent algebra obtained by Mantaci and Reutenauer [18, Corollary 6.8].
This formula is originally due to Garsia and Remmel [11] for ... combinatorics 16 (2009), #R21 4
Our approach, in addition to providing an elementary and concise route to understand-
ing Mantaci and Reutenauer’s colored descent algebras, offers...
Báo cáo toán học: " Symmetric Sum-Free Partitions and Lower Bounds for Schur Numbers" potx
... inequality in (3) is due to G. Exoo [4], and the second follows from (2)
and the bounds for R
5
(3) given in S. Radziszowski’s survey paper [6]. For earlier
work on lower bounds for S(k) see H. Fredricksen ... 9, 2000; Accepted:May 18, 2000
Abstract
We give new lower bounds for the Schur numbers S(6) and S(7). This
will imply new lower bounds for the Multicolor R...
Báo cáo khoa học: "A new Approach to Improving Multilingual Summarization using a Genetic Algorithm" pptx
... that a new and different
offspring solution will be generated by calculat-
ing the weighted average of two “parent” vectors
according to (Vignaux and Michalewicz, 1991).
Formally, a new vector v ... 1997;
Satoshi et al., 2001) and length-based (Satoshi et
al., 2001).
Considered the first work on sentence scoring
for automated text summarization, Luhn (1958)
based the significance factor...
Báo cáo khoa học: "A New Approach to the Mechanical Syntactic Analysis of Russian" ppt
... translation, today’s machines
would not be adequate tools for its implementation.
They lack automatic transformers of printed text into
coded signals, and their external storage devices are
not up to ...
nounced a new course in advanced calculus. And yet,
a scheme for discerning such differences is what we
must impart to the machine.
Even if there now existed a completely sa...
Báo cáo khoa học: "A New String-to-Dependency Machine Translation Algorithm with a Target Dependency Language Model" pot
... While tree -to- tree models can rep-
resent richer structural information, existing tree -to-
tree models did not show advantage over string -to-
tree models on translation accuracy due to a much
larger ... pro-
vide formal definitions of well-formed structures and
combinatory operations over them, so that we can
easily manipulate well-formed structures in decod-
ing. Formal definitions als...
Báo cáo toán học: " A novel algorithm to form stable clusters in vehicular ad hoc networks on highways" doc
... due to mobility and form a new cluster,
or when two neighboring clusters merge to produce a new cluster). To evaluate this metric, the
total number of clusters created and added is calculated for ... rather than considering only position and direction. Some clustering
techniques took mobility into consideration for cluster head (CH) elections, but not for cluster
formation. F...
Báo cáo toán học: " A novel method for crystalline silicon solar cells with low contact resistance and antireflection coating by an oxidized Mg layer" ppt
... metal paste forms too high potential barrier to form an
ohmic contact with an n+ region, a new material can be inserted between Ag and Si to form
low barrier height (Φ
B
) and thus to reduce ... crystalline silicon [c-Si] photovoltaic
research is to enhance the efficiency of the solar cell without a too complicated process. One
of the ways to increase the efficiency is to l...