#### 68 Citations

New Method of Solving the Economic Complex Systems

- Computer Science
- 2020

A direct method used to solve the linear nonhomogeneous time-invariant difference equation with the same number for inputs and outputs is developed and the proposed theorems originally belonging to engineering to the field of economic applications are applied. Expand

The z -Transform and Analysis of LTI Systems in the Transform Domain

- Mathematics
- 2018

The DTFT may not exist for all sequences due to the convergence condition, whereas the z-transform exists for many sequences for which the DTFT does not exist. Also, the z-transform allows simple… Expand

Fourier spectral methods for numerical solving the problem of boundary control of the linear wave equation

- Mathematics
- 2017

Abstract In this paper, a Fourier spectral method is used to reduce the optimal boundary control problem for a two-dimensional wave equation to a countable number of control problems for a… Expand

On the summation of divergent, truncated, and underspecified power series via asymptotic approximants

- Mathematics
- 2017

A compact and accurate solution method is provided for problems whose infinite power series solution diverges and/or whose series coefficients are only known up to a finite order. The method only… Expand

Transforms of Discrete-Time Signals

- Mathematics
- 2016

In this chapter, the invertible transforms used to work on discrete-time signals are discussed. Given a complex variable z, the z-transform is defined as an infinite series in the z-plane that exists… Expand

Why the Last Century’s Quantum Mechanics (QM) is Irrelevant in a Duplex, Reciprocal Subspace, Reference Frame for Our Cognitive World

- 2015

Nature is always richer in untapped possibilities than we think it is. We must always keep planting the new “seed corn” of fundamental research so that we might reveal new levels of nature’s… Expand

Cavitation and Bubble Dynamics: Nomenclature

- Materials Science, Chemistry
- 2013

Cavitation and Bubble Dynamics deals with the fundamental physical processes of bubble dynamics and the phenomenon of cavitation. It is ideal for graduate students and research engineers and… Expand

Low-frequency asymmetric vibrations of a tn shell with sign-changing curvature.

- Mathematics
- 2012

Most problems in Applied Mathematics involving difficulties such as nonlinear governing equations and boundary conditions, variable coefficients and complex boundary shapes preclude exact solutions.… Expand

Multipole method to calculate borehole thermal resistances in a borehole heat exchanger

- Mathematics
- 2011

Ground-source heat pump systems use borehole heat exchangers to transfer heat to and from the ground. An important feature is the local thermal resistances between the heat carrier flow channels in… Expand

A STM point-probe method for measuring sheet resistance of ultrathin metallic films on semiconducting silicon

- Materials Science
- 2010

Abstract We report a novel approach for distinguishing surface, bulk and space–charge layer conductivities of metalized semiconductor surfaces. The method employs current injection from the tip of a… Expand