Results 11 to 20 of about 3,443,002 (123)
Geometric theorem proving using the Groebner basis algorithm [PDF]
, 2009 The purpose fo this project is to study ideals in polynomial rings and affine varieties in order to establish a connection between these two different concepts. Doing so will lead to an in depth examination of Groebner bases.
Rivas, Karla Friné
core +7 more sources
Intelligent Approach for Control Techniques Based on Complex Converter Structures
International Journal of Energy Research, Volume 2023, Issue 1, 2023., 2023 Hybrid frequency control strategies are used to eliminate the problem of current inversion in multilevel cascaded asymmetrical H‐bridge inverters. Unfortunately, this technique results in unbalanced power at the inverter output. The improved hybrid PWM modulation strategy helps to regulate power balances within a reasonable range at high and low ...
Kitmo +5 more
wiley +1 more source
A Forward Solution Algorithm of 6RUS Parallel Mechanism Based on Dual Quaternion Method
International Journal of Aerospace Engineering, Volume 2023, Issue 1, 2023., 2023 The 6RUS parallel manipulator is a highly versatile and widely used robotic mechanism with six degrees of freedom. Its intricate kinematic structure and its capability to perform complex motion tasks have garnered significant research interest in recent years.
Guangyu-yu Dong +3 more
wiley +1 more source
Rationalizing Denominators Using Gröbner Bases
Complexity, Volume 2022, Issue 1, 2022., 2022 The problem of rationalizing denominators for two types of fractions is discussed in the paper. By using the theory and algorithms of Gröbner bases, we first introduce a method to rationalize the denominators of fractions with square root and cube root, and then, for the denominators with higher radical of the general form, the problem of rationalizing
Dongmei Li +4 more
wiley +1 more source
Allocation of Optimal PMUs for Power System Observability Using PROMETHEE Approach
International Transactions on Electrical Energy Systems, Volume 2022, Issue 1, 2022., 2022 Phasor measurement units (PMUs) are becoming a vital measurement device in wide‐area monitoring, operation, and control. The allocation of PMU at each bus will make that bus directly observable. However, considering the high installation costs, it is not feasible to place PMU at each bus.
Shubhrajyoti Kundu +4 more
wiley +1 more source
International Transactions on Electrical Energy Systems, Volume 2022, Issue 1, 2022., 2022 Multilevel inverters (MLI) are becoming more common in different power applications, such as active filters, elective vehicle drives, and dc power sources. The Multi‐Group Marine Predator Algorithm (MGMPA) is introduced in this study for resolving transcendental nonlinear equations utilizing an MLI in a selective harmonic elimination (SHE) approach ...
G. Krithiga, V. Mohan, R Sitharthan
wiley +1 more source
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 A selective harmonic elimination method of modified packed u‐cells (MPUC) inverter fed induction motor built on modified multiverse optimizer (MMVO) algorithm is put forward. The proposed method adopts the MMVO algorithm to search the optimal solution in the SHEPWM equations through the two processes of exploring the optimal solution distribution and ...
Guohua Li +3 more
wiley +1 more source
Hyperelliptic Covers of Different Degree for Elliptic Curves
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 In elliptic curve cryptography (ECC) and hyperelliptic curve cryptography (HECC), the size of cipher‐text space defined by the cardinality of Jacobian is a significant factor to measure the security level. Counting problems on Jacobians of elliptic curve can be solved in polynomial time by Schoof–Elkies–Atkin (SEA) algorithm. However, counting problems
Jing Fan +4 more
wiley +1 more source
Minimal basis of the syzygies module of leading terms
Труды Института системного программирования РАН, 2019 Systems of polynomial equations are one of the most universal mathematical objects. Almost all the problems of cryptographic analysis can be reduced to finding solutions to systems of polynomial equations.
A. V. Sokurov
doaj +1 more source
The FEBS Journal, Volume 288, Issue 13, Page 4000-4023, July 2021., 2021 The chromatin remodelers CHD3 and SNF2H are central regulators of chromatin structure by repositioning histone octamers on DNA in an ATP‐dependent mechanism. Sequence differences in the ATPase domain make CHD3 a more energy efficient chromatin remodeling enzyme and being less susceptible to competitive inhibition by ADP.
Helen Hoffmeister +9 more
wiley +1 more source