The linear case

In the current work HRV was assessed by traditional linear time and frequency-domain indexes, in parallel with the non linear indexes. Both linear time and frequency domain parameters, and nonlinear parameters discriminate the different levels. Poincaré plot analysis is a promising method in statistical evaluation and arrhythmia cases.

4p vilexus 05-10-2022 3 1   Download

This paper uses the data obtained in the actual blasting of the Deo Ca tunnel (39 datasets) to build the computational and prediction models for the area of the tunnel face after blasting by two methods, the multiple linear regression analysis method and the method of using artificial neural network (ANN).

10p vibentley 08-09-2022 7 1   Download

(BQ) Ebook Fundamentals of Aerodynamics: Part 2 includes the following content: Compressible flow: some preliminary aspects; normal shock waves and related topics; oblique shock and expansion waves; compressible flow through nozzles, diffusers, and wind tunnels; subsonic compressible flow over airfoils: linear theory; linearized supersonic flow; introduction to numerical techniques for nonlinear supersonic flow; elements of hypersonic flow; introduction to the fundamental principles and equations of viscous flow; a special case: couette flow; introduction to boundary layers; laminar boundar...

607p runordie6 10-08-2022 4 0   Download

In this paper, with the simulated signal data set obtained at the linear antenna array (ULA), the Long Short-Term Memory (LSTM) network model is used to estimate the DOA. The performance of the method is evaluated based on the RMSE parameter and compared with MUSIC, DNN algorithms in different cases such as: deviation of incident angle of radiation sources, signal-to-noise ratio (SNR).

6p vigeneralmotors 13-07-2022 8 4   Download

In the paper "On L∞-Induced stabilization of positive linear systems with distributed delays" consider the stabilization problem under L∞-gain scheme for positive linear systems with distributed time delays. Novelty and main contribution of this paper are two points. First, a characterization of L∞-gain is reformulated using novel comparison techniques involving steady states of upper scaled systems with peak values of exogenous disturbances.

10p runordie3 27-06-2022 15 2   Download

The study "Applications of Google OR-Tools in solving construction management linear optimization problems" demonstrates the application of Google OR-Tools as a powerful, easy-to-use, and open source software suite in tackling linear programs. Herein, this open source tool has been integrated with Visual C# programming and the optimization models are formulated in Microsoft Visual Studio. Two optimization case studies are used in this study to illustrate the implementation of the Google OR-Tools.

5p runordie2 06-06-2022 3 1   Download

The book aims to be a first introduction to the subject. Specific examples and concrete algorithms precede more abstract topics. Nevertheless, topics covered are developed in some depth, a large number of numerical examples are worked out in detail, and many recent topics are included, most notably interior-point methods. The exercises at the end of each chapter both illustrate the theory and, in some cases, extend it.

420p b1700001 11-02-2022 308 1   Download

The human genome is hierarchically organized into local and long-range structures that help shape cell-type-specific transcription patterns. Transfer RNA (tRNA) genes (tDNAs), which are transcribed by RNA polymerase III (RNAPIII) and encode RNA molecules responsible for translation, are dispersed throughout the genome and, in many cases, linearly organized into genomic clusters with other tDNAs.

18p vialfrednobel 29-01-2022 5 0   Download

The objective function was to minimize the sum of weighted straight-line distances from the first or second warehouse to either vendors or customers. The straight-line distance was determined using the principle of Pythagorean triples and was weighted by the shipment frequency and the shipment cost rate.

12p guernsey 28-12-2021 6 0   Download

In scoliosis corrective surgery, total blood loss is composed of visible blood loss, including intraoperative haemorrhage and drainage, and hidden blood loss in which blood extravasates into the tissues and accumulates in the surgical field.

7p vimackenziebezos 30-11-2021 4 0   Download

In this work we implement the method of least square approximation for data processing and a mathematical method of linear regression, which give a link between the observed size, in our case, the number of fund members, the average salaries in Serbia and the size of Fondex, and to be used to predict the number of fund members depending on other sizes.

12p inception36 30-11-2021 22 0   Download

Asthma is a common respiratory disorder; some data were present on the correlation between increased levels of some elements and the risk of asthma development. It was aimed to evaluate the levels of 13 selected blood and tooth elements (magnesium, phosphorus, calcium, chromium, manganese, iron, copper, zinc, strontium, molybdenum, cadmium, lead, mercury) in a well-controlled asthma group and the control group.

8p vimackenziebezos 29-11-2021 3 0   Download

This paper deals with the Traveling Salesman Problem with Multi-Visit Drone (TSPMVD) in which a truck works in collaboration with a drone that can serve up to q ≥ 1 customers consecutively during each sortie. We propose a Mixed Integer Linear Programming (MILP) formulation and a metaheuristic based on Iterated Local Search (ILS) to solve the problem. Benchmark instances collected from the literature of the special case with q = 1 are used to test the performance of our algorithms.

29p spiritedaway36 25-11-2021 5 0   Download

The stress jumps in reinforcement textile after each crack was also observed and analyzed. In comparison with the experiment, a good agreement between both results was found for all cases of this study. A parametric study could show the effect of the length and position of the measurement zone on the stress-strain curve of TRC’s mechanical behavior.

12p chauchaungayxua12 09-07-2021 13 0   Download

Based on the quantum kinetic equation for electrons under the action of a linearly polarized electromagnetic wave, a dc electric field and an intense laser field, analytic expressions for the density of the direct current in rectangular quantum wire with an infinite potential for the case of electron - acoustic phonon scattering are calculated.

8p vijichoo2711 04-06-2021 15 0   Download

In this paper, we state and prove the hyperstability of generalized linear equations in several variables in quasi-normed spaces. As applications, we deduce some known results and some particular cases of generalized linear equations in several variables.

9p nguaconbaynhay12 03-06-2021 12 0   Download

Concerned by the environmental and economic threats posed by fossil fuels as the source of energy, this study uses the case of Nigeria economy to understand the extent to which economic growth and carbon emissions matters for renewable energy demands. Exploring both the linear and nonlinear ARDL modelling framework, the main empirical findings are that the amplified responsiveness of the consequence of climate change has led to increase in the demand for renewable energy particularly when the underlying source of the emissions is attributable to activities in the transport sector.

7p caygaocaolon11 18-04-2021 5 0   Download

This research aims at investigating the realization of thematic progression (TP) patterns, which is defined as “the way in which the theme of a clause may pick up, or repeat a meaning from a preceding theme or rheme” (Paltrigde, 2006, p. 148), and their effects on text quality of online IELTS Writing Task 2 samples.

16p trinhthamhodang1218 04-03-2021 15 1   Download

We study the higher differentiability of stationary solutions up to the flat boundary for a class of systems of fluid mechanics modelling flows of incompressible fluids with shear and pressure dependent viscosity in 2D or 3D. We consider systems which are a kind of generalized Navier-Stokes system where stress tensor T has linear growth in symmetric velocity gradient and dependence of viscosity on the pressure is small with respect to an ellipticity constant.

8p tamynhan5 10-12-2020 6 0   Download

Different high-dimensional regression methodologies exist for the selection of variables to predict a continuous variable. To improve the variable selection in case clustered observations are present in the training data, an extension towards mixed-effects modeling (MM) is requested, but may not always be straightforward to implement.

11p vikentucky2711 26-11-2020 10 0   Download