The difference polynomials

This paper proposes an efficient method to determine entire reducts of incomplete decision tables according to the relational database approach. In the complex case, this algorithm has exponential computational complexity. However, this algorithm has polynomial computational complexity in the different cases of databases.

9p dianmotminh02 03-05-2024 3 1   Download

Part 2 book "Engineering mathematics" includes content: Techniques of integration; applications of integration; further topics in integration, numerical integration; Taylor polynomials, Taylor series and Maclaurin series, ordinary differential equations; ordinary differential equations; the Laplace transform; difference equations and the Z transform; fourier series; the Fourier transform; functions of several variables; vector calculus; line integrals and multiple integrals; probability; statistics and probability distributions.

548p muasambanhan06 01-02-2024 3 2   Download

We give some examples which show the difference between Fedoryuk set of polynomial functions and Fedoryuk set of differentiable semi-algebraic functions. The existence of local and global error bounds has many applications to other problems, for instance, convergence analysis of algorithms, variational inequalities, sensitive analysis.

7p viberkshire 09-08-2023 8 4   Download

The limits of current micro-scale technology is approaching rapidly. As the technology is going toward nano-scale devices, physical phenomena involved are fundamentally different from micro-scale ones. Principles in classical physics are no longer powerful enough to explicate the phenomena involved in nano-scale devices. At this stage, quantum mechanic sheds some light on those topics which cannot be described by classical physics. The primary focus of this research work is the development of an analysis technique for understanding the behavior of strongly perturbed harmonic oscillators.

165p runthenight07 01-03-2023 4 2   Download

Temperature and grain moisture content are the main factors affecting grain spoilage in storage. These factors have a significant impact on the maintenance of quality, insect, fungus, and pest development. The main objective of this study was to determine the CO2 concentration and respiration rate of hulled einkorn wheat in different temperatures (5, 10, 15, 20, 25, 30, and 35 °C) and grain moisture contents (9.1%, 11.5%, 13.8%, and 15.9%, wet basis) by means of CO2 sensors.

12p hanthienngao 30-11-2021 5 0   Download

Yang et al. recently developed a user-friendly image-sharing scheme that shares images using many polynomials with different primes. Yang et al. modified the least significant bit (LSB) of original pixels to identify the prime number for sharing. However, the reconstructed image retains some noise. The scheme proposed in this work uses polynomials with different primes to generate pixel shadows without adjusting the LSBs of original pixels, such that the recovery process can reconstruct a high-quality original image using the Lagrange interpolation function.

6p angicungduoc3 22-03-2020 31 1   Download

The objective of this present study was to obtain optimized conditions for calculating cassava starch properties using response surface methodology (RSM). In this study, BoxBehnken response surface design (BBD) was used to optimize cassava starch properties (3 independent process factors at 3 levels with 17 runs) and to evaluate the main, linear and combined effects of cassava starch extraction conditions. The independent process variables selected in this study were sonication temperature (30, 40, 50°C), sonication time (10, 20, 30 min) and solid-liquid ratio (1:10, 1:20, 1:30 g/ml).

16p caygaocaolon3 27-02-2020 29 2   Download

An attempt was made to study the soil water movement under two type of plastic mulch (black and white) with drip irrigated eggplant on a line source dripper. Both spatial and temporal variation of wetting pattern was determined in sandy loam soil using surfer 15 software. The layout of the experiment was three treatments tested, black mulched drip irrigation (BM+DI), white mulched drip irrigation (WM+DI) and drip irrigation without mulching. The results of the study indicated that DI + BM and DI + WM treatments distinctly decreased water applied in the order of DI + WM < DI + BM < DI.

8p nguathienthan2 25-12-2019 19 0   Download

Tuberose (Polianthes tuberosa L.) occupies a very selective and special position among the ornamental bulbous plants which are valued much by the aesthetic world for beauty and fragrance. Tuberose is cultivated in large scale in many tropical and subtropical countries including India. It is an important cash crop in India and commercial cultivation is taking place in Karnataka, Andhra Pradesh, Tamil Nadu, Maharashtra and West Bengal. During 2014-15 total area under tuberose in India was 6.82 thousand hectares producing 42.74 thousand MT and 5.93 lakhs pikes (Anonymous, 2015).

14p cothumenhmong1 11-12-2019 13 1   Download

The primary need of water resource development in any area depends on estimation of rainfall at different probabilities for efficient planning and design of irrigation and drainage systems, command area development, soil and water conservation programmes and the optimum utilization of water resources in various agricultural production systems. The annual maximum daily rainfall data of 18 years (1991 to 2008) was obtained from ARS, Mulde. It was analyzed for maximum one day and extended days (up to 6 day) rainfall for Mulde.

7p cothumenhmong1 11-12-2019 20 0   Download

Formulae expressing explicitly the q-difference derivatives and the moments of the polynomials Pn(x ; q) ∈ T (T ={Pn(x ; q) ∈ Askey–Wilson polynomials: Al-Salam-Carlitz I, Discrete q-Hermite I, Little (Big) q-Laguerre, Little (Big) q-Jacobi, q-Hahn, Alternative q-Charlier) of any degree and for any order in terms of Pi(x ; q) themselves are proved. We will also provide two other interesting formulae to expand the coefficients of general-order q-difference derivatives Dp q f (x), and for the moments xDp q f (x), of an arbitrary function f(x) in terms of its original expansion coefficients.

15p kethamoi1 20-11-2019 14 0   Download

The aim of this study was to develop and optimize Trimetazidine dihydrochloride (TM) controlled porosity osmotic pump (CPOP) tablets of directly compressed cores. A 23 full factorial design was used to study the influence of three factors namely: PEG400 (10% and 25% based on coating polymer weight), coating level (10% and 20% of tablet core weight) and hole diameter (0 ‘‘no hole’’ and 1 mm). Other variables such as tablet cores, coating mixture of ethylcellulose (4%) and dibutylphthalate (2%) in 95% ethanol and pan coating conditions were kept constant.

10p kethamoi1 17-11-2019 16 3   Download

The aims of this study were to provide life expectancy (LE) estimates of cancer patients at diagnosis and LE changes over time since diagnosis to describe the impact of cancer during patients’ entire lives. Cancer patients’ LE was calculated by standard period life table methodology using the relative survival of Italian patients diagnosed in population-based cancer registries in 1985–2011 with follow-up to 2013.

7p trinhthamhodang1 14-11-2019 13 0   Download

Let Pk be the graded polynomial algebra F2[x1, x2,...,xk] with the degree of each generator xi being 1, where F2 denote the prime field of two elements, and let GLk be the general linear group over F2 which acts regularly on Pk. We study the algebraic transfer constructed by Singer [1] using the technique of the Peterson hit problem. This transfer is a homomorphism from the homology of the mod-2 Steenrod algebra A, TorA k,k+d(F2, F2), to the subspace of F2⊗APk consisting of all the GLk-invariant classes of degree d.

14p caygaocaolon1 13-11-2019 14 1   Download

In this paper, a new approach for solving space fractional order diffusion equations is proposed. The fractional derivative in this problem is in the Caputo sense. This approach is based on shifted Chebyshev polynomials of the fourth kind with the collocation method.

15p danhdanh27 07-01-2019 32 1   Download

Being motivated by some methods for construction of homothetically indecomposable polytopes, we obtain new methods for construction of families of integrally indecomposable polytopes. As a result, we find new infinite families of absolutely irreducible multivariate polynomials over any field F. Moreover, we provide different proofs of some of the main results of Gao.

12p danhdanh27 07-01-2019 27 2   Download

We present a full Nesterov-Todd (NT) step infeasible interior point algorithm for second-order cone optimization based on a different way to calculate feasibility direction. In each iteration of the algorithm we use the largest possible barrier parameter value θ. Moreover, each main iteration of the algorithm consists of a feasibility step and a few centering steps. The feasibility step differs from the feasibility step of the other existing methods. We derive the complexity bound which coincides with the best known bound for infeasible interior point methods.

18p danhnguyentuongvi27 19-12-2018 41 0   Download

In this paper, we study the uniqueness problem on difference polynomials and its differential of meromorphic function sharing a common value.

6p vision1234 30-06-2018 19 1   Download

Implementation of the cryptographic algorisms based on elliptic curves (ECs) over VFFs provides significantly higher performance than the implementation of the EC-based algorithms, in which the ECs are defined over the ground fields and extension finite fields of polynomials.

6p dunglh2013 02-04-2014 56 0   Download

We present a syntax-based statistical translation model. Our model transforms a source-language parse tree into a target-language string by applying stochastic operations at each node. These operations capture linguistic differences such as word order and case marking. Model parameters are estimated in polynomial time using an EM algorithm. The model produces word alignments that are better than those produced by IBM Model 5. is conditioned only on word classes and positions in the string, and the duplication and translation are conditioned only on the word identity. ...

8p bunrieu_1 18-04-2013 71 4   Download