Mathematical models

This paper evaluates an energy harvesting strategy for UAVs from sunlight and laser beams on cloudy days with a low-level cloud layer. The channel models and harvested powers for both cases are considered and analyzed using mathematical equations and simulation results.

7p viengfa 28-10-2024 2 1   Download

The paper explores the application of the Modal Truncation algorithm in Model Order Reduction, focusing on its effectiveness in reducing high-dimensional mathematical model. The algorithm identifies dominant modes governing dynamic responses, discards the high-order model, and reconstructs a new model with reduced dimensions.

6p viengfa 28-10-2024 2 1   Download

In the paper, we propose a mathematical model that combines bottom erosion and riverbank failure mechanisms. The model incorporates high-performance GPUs (Graphics Processing Units) to enhance its computational efficiency and capability.

22p vibecca 01-10-2024 3 1   Download

A study was conducted to estimate the optimal levels of energy, protein, and fiber in the diets of New Zealand White (NZW) growing rabbits fed on fresh green forage available in North Vietnam. Mathematical modelling of nutrient-response curves was applied for the study.

9p vibecca 01-10-2024 3 2   Download

In this paper, we conduct a survey on optimization-based approaches to dynamic CGKM, which can be divided into two categories based on logical/heuristic arguments and a rigorous mathematical optimization model.

9p viyoko 01-10-2024 3 1   Download

This paper proposes a method to identify the optimal operating point fora photovoltaic power system. With theinformation on the power's solar irradiance, the temperature at P-N junction, and the generated power limit, an algorithm is proposed to calculate points on the voltage-power curve based on an utterly mathematical model of the generation, iterative,and bisectional techniques.

5p viyoko 01-10-2024 2 1   Download

This article represents the mathematical modeling and simulation of several common flying situations of a paraglider through establishing and solving the governing differential equations in state-space.

11p vifilm 24-09-2024 1 1   Download

The research uses a mathematical method to aims to: (1) investigate the characteristics of bid compensation, (2) analyze the effectiveness of bid compensation in helping develop appropriate strategies from an owner’s perspective for projects where the bid preparation costs are high, (3) add to the existing literature on tender management.

13p vifilm 24-09-2024 5 1   Download

The research subject is the process of economic and mathematical modelling of time series characterizing the bitcoin exchange rate volatility, based on the use of artificial neural networks. The purpose of the work is to search and scientifically substantiate the tools and mechanisms for developing prognostic estimates of the crypto currency market development. The paper considers the task of financial time series trend forecasting using the LSTM neural network for supply chain strategies.

5p longtimenosee09 08-04-2024 9 1   Download

In this research, an algorithm has been developed to predict traffic density on the delayed Lighthill - Whitham - Richards (LWR) model, in which a regularization difference method has been proposed as the basis for the algorithm. This article mainly focus on building an algorithm and performing experimental calculations to verify the correctness of the algorithm on a mathematical model.

7p gaupanda024 04-04-2024 9 2   Download

The thesis "Stability of some classes of degenerate two-phase difference systems with delay" is to study the stability of degenerate two-phase systems with mixed delay in the direction of variation; Stability and dissipation in finite domain of degenerate 2-D system with variable delay; Evaluation of the gain set and control design for a degenerate 2-D system in the Roesser model with variable delay;... Please refer to it!

120p gaupanda019 21-03-2024 5 1   Download

The objective of this thesis was to investigate the development of a micro-electromechanical system (MEMS) which can be implanted in the eye to provide continuous monitoring of glaucoma conditions. Current glaucoma monitoring involves taking laboratory based intra ocular pressure (IOP) measurements. The measurement of intraocular fluid flow and IOP parameters related to blockage formation in the eye require to be continuously monitored in Glaucoma.

153p runthenight07 01-03-2023 5 3   Download

The main focus of this thesis is on the application of a model predictive control (MPC) method to devise an ABS for a BBW vehicle. Unlike the traditional ABS control algorithms which are based on a trial and error method, the MPC based ABS algorithm aims to utilizes the behaviour of the model to optimize the wheel slip dynamics subject to system constraints. Performance of the proposed wheel slip controller is validated through Software-in-the-Loop (SiL) and Hardware-inthe-Loop (HiL) simulation.

136p runthenight07 01-03-2023 7 3   Download

In this thesis, the limitations of using existing LTE congestion mitigation mechanisms such as Discard Timer and RED have been explored. A different mechanism to analyse the effects of using control theory for congestion mitigation has been developed. Finally, congestion mitigation in LTE networks has been addresses using radio resource allocation techniques with non-cooperative game theory being an underlying mathematical framework.

118p runthenight04 02-02-2023 3 2   Download

Two major areas of the scorecard development process were identified as having much capacity for improving credit scoring models. These are the application of 1) better classifiers and 2) variable selection techniques. However, the application of an artificial immune system for developing scorecards as well as the use of other variable selection techniques, other than stepwise regression, in credit scoring are quite limited as indicated by the scarcity of published materials in these two areas in the current literature.

210p runthenight04 02-02-2023 5 2   Download

This paper considers the problem of a low-velocity normal impact of a rigid cone-shaped upon a viscoelastic plate. The contact force is defined by the modified Hertz's contact law. Approximate solutions of the system of nonlinear integro-differential equations for the contact force and local indentation have been obtained.

7p meyerowitz 25-12-2021 11 1   Download

Bài giảng Phương pháp số trong tính toán cơ khí - Bài 1: Những khái niệm cơ bản cung cấp cho học viên các kiến thức về phương pháp số, các phương pháp không dùng máy tính cá nhân, lý do sử dụng phương pháp số; các nội dung chính trong môn học phương pháp số; mô hình toán hoá (Mathematical modeling); các định luận bảo toàn trong kỹ thuật; bốn lĩnh vực kỹ thuật sử dụng định luật bảo toàn;... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

53p thienlangso 15-12-2021 33 3   Download

In this thesis, we propose a mathematical model to improve the hull form of a container ship in the preliminary design stage, aiming to reduce the ship's resistance concerning constraints of Vietnam's river-sea route.

39p closefriend09 16-11-2021 22 3   Download

The dissertation has five chapters and a list of references. The chapters concentrate on the following issues: In Chapter 1, we recall some classical results of the problem and some basic concepts from variational analysis and nonsmooth analysis. In Chapter 2, we investigate some new models of nonlinear nonlocal regularity; Chapter 3 is devoted to the study of metric perturbation of Milyutin-type regularity on a fixed set under composition of a set-valued mapping and a Lipschitz single-valued mapping;...

145p visteveballmer 06-11-2021 15 3   Download

Nghiên cứu đã xây đựng thành công 10 mô hình QSAR nhằm dự đoán khả năng ức chế Tyrosinase từ cấu trúc phân tử. Dựa trên các nguyên tắc của OECD, chất lượng của các mô hình này đã được chứng minh, qua đó phản ánh tính đúng đắn của phương pháp nghiên cứu. Mời các bạn cùng tham khảo nội dung chi tiết.

7p closefriend02 07-10-2021 12 2   Download