Method of establishment

In this article, we establish a Digital Radio over Fiber (DRoF) information system with two wireless channels utilizing two advanced phase modulation techniques, namely Differential Phase Shift Keying (DPSK), for the CRAN connection and investigate parameters related to nonlinearity such as refractive index n2.

6p viengfa 28-10-2024 1 1   Download

This study was conducted to establish the procedure for in vitro propagation of Japanese cherry (Prunus sp.) to produce large quantity of plantlets and initial planting materials for climate adaptation research of this plant in Hanoi.

9p vibecca 01-10-2024 2 1   Download

This work is devoted to conducting a new study for global dynamics and numerical simulation of a discrete-time computer virus propagation model, which was constructed in our recent work. By utilizing well-known results on asymptotic stability of discrete-time dynamical systems, we establish the global asymptotic stability of a unique viral equilibrium point, whereas only its local asymptotic stability was previously analyzed.

8p viyoko 01-10-2024 6 1   Download

To evaluate the effectiveness of sperm bank for infertility treatment at Da Nang Hospital for Women and Children. Materials and Methods: A cross-sectional descriptive study was conducted on 88 cryopreserved sperm samples at Da Nang Hospital for Women and Children from December 2020 to September 2023.

7p viengfa 29-09-2024 2 2   Download

A fuzzy finite element approach for static analysis of laterally loaded pile in multi-layer soil with uncertain properties is presented. The finite element (FE) formulation is established using a beam-on-two-parameter foundation model.

9p viyoko 24-09-2024 4 0   Download

In this study, an analytical chemistry practice was established and validated via the quantification of ibuprofen in drugs using the UHPLC-PDA/MS analysis for undergraduate students. These findings demonstrate that the analytical procedure is a promising and effective method for establishing the analytical chemistry practice to meet the general education curriculum 2018 in Vietnam and serve as a valuable reference for students and teachers.

16p visergeyne 18-06-2024 4 0   Download

A new semi-empirical technic has been established relying on the linkage between the chemistry in the bulk liquid and that taking place in the acoustic cavitation bubble. The open-source COPASI software has been used for the optimization of number density according to the total yield of a single bubble and the fitting of the experimental yield of hydrogen peroxide in the sonicated solution. It was observed that the number density is increased with the rise of ultrasound frequency from 200 to 1140 kHz, independently of the saturating gas nature (O2, Ar or air).

10p dianmotminh02 03-05-2024 3 2   Download

This paper presents a method for establishing the exact receptance function of a tapered axially functionally graded (AFG) beam with nonlinear ratios of properties using the Adomian method. In current papers, the Adomian method was applied for linearly tapered beams where the geometric series was used conveniently.

22p dianmotminh02 03-05-2024 5 2   Download

The effect of machining parameters on the surface roughness in dry-turning Ti6Al4V alloy using an experimental design method was investigated. A mathematical equation based on the response surface methodology was established to fully understand the influence of machining parameters (cutting speed, feed rate, and depth of cut) on the surface roughness.

9p viwarmachine 01-07-2023 11 3   Download

This article introduces a method which could quickly delineate short-circuit fault location by establishing the corresponding matrix between nodes on grid and short circuit current value. A 22kV Daklak distribution grid – E471 line is studied. A big data of input as load, source, season coefficient, utilization coefficient and all four types of short circuit have been considered and calculated in detail.

7p vidoctorstrange 06-05-2023 8 2   Download

This thesis investigates the SPH capability available in the commercial Finite Element (FE) code LS-DYNA®, for water impact problems. Experiments have been conducted on rigid wedges impacting water, which were then simulated with the SPH method. Although certain limitations were experienced with the experimental results, a positive correlation was observed with the numerical technique, thus establishing SPH as a promising method for crashworthiness design.

176p runthenight07 01-03-2023 8 3   Download

The document will be structured as follows: In Chapter 2 outline the methodology, discussing the computational techniques used to evaluate the interaction energies and evaluating the construction of the TT and D3(BJ) correction terms. Chapter 3 attempts to establish a foundational understanding of how these methods model vdW interactions by evaluating the performance of the corrected and uncorrected HF and DFT methods in comparison with CCSD(T) energies for a selection of inert gas dimers, and simple molecule-molecule interactions.

63p runthenight04 02-02-2023 9 2   Download

The study "Multi-objective solar building envelope design optimization" includes four main objectives: 1 - To explore the components of a building envelope design optimization framework that would be developed for the conceptual building design phase; 2 - To establish an optimization process for different BIPV application types; 3 - To investigate the optimization algorithms and methods that could be used to optimize building envelope design for BIPV; 4 - To develop and validate an optimization framework to integrate BIPV into the building structure.

158p runthenight04 02-02-2023 5 2   Download

A major objective of the research presented here is to develop a link between the two approaches by establishing the relationship between the bridge component condition and the capacity and serviceability limits of the structure. A comprehensive review of literature identified methods of predictive modelling of bridge component condition change using different approaches. The review also indicated that a key to the proposed linkage is considering specific degradation mechanisms in predicting bridge deterioration.

254p runordie3 06-07-2022 11 2   Download

The timing of the deposition of the well-preserved Quaternary marine terraces in the coastal region of northeastern Turkey are crucial in understanding the Quaternary tectonics of the Pontides. The chronology of raised marine terraces between Trabzon and Rize has remained unrevealed because of chronologic limitations. This study aims to establish chronology for the terrace deposits by applying optically stimulated luminescence (OSL) dating methods using single aliquot regenerative dose (SAR) techniques on quartz grains extracted from marine terraces.

20p tanmocphong 29-01-2022 22 1   Download

Lecture Electronic commerce - Chapter 15: Economics and Justification of Electronic Commerce learning objectives: Describe the need for justifying EC investments, how it is done, and how metrics are used to determine justification. Understand the difficulties in measuring and justifying EC investments. Recognize the difficulties in establishing intangible metrics and describe how to overcome them. List and briefly describe traditional and advanced methods of justifying IT investments.

50p caphesuadathemtac 09-11-2021 14 4   Download

The research purpose of the dissertation is to develop a new method of establishing the optimum construction scheduling strategy for infrastructure systems of new urban areas from the perspective of the investors.

27p gaocaolon12 18-06-2021 13 3   Download

Objectives: Establish a scientific basis and propose a process of organizing the teaching of grade 10 Biology to meet the career-oriented goals in implementing the General Education Program 2018.

27p tunelove 10-06-2021 15 4   Download

Two objectives: Establish the procedure for interlocking intramedullary nailing without opening the fracture site under the intensifying screen. Evaluate the results of treatment for femoral shaft fractures with the method of interlocking intramedullary nailing without opening the fracture site and compare to the method of interlocking nailing opening the fracture site.

30p petsematary 02-06-2021 16 4   Download

Aim of the thesis: Development of a new method for determining concentration of the radionuclides in enviromental samples by mean of gamma spectroscopy. Establishing a data set of the soil-plant transfer factor (TF) of radionuclides 238U, 232Th and 40K for some vegetables in Truong Sa island and that of 238U, 232Th, 40K and 137Cs for tea tree from Luong My farm, Hoa Binh province, Vietnam and evaluate the influence of natural radionuclide concentration to the soil-plant transfer process of artificial radionuclide 137Cs.

30p extraenglish 24-05-2021 23 3   Download