Summary of engineering doctoral thesis

Building models, setting up dynamic equations, vibration equations of vertical band saw blades, surveying dynamic equations, determining some optimal parameters of vertical band saws in automatic sawing lines, to improve productivity and product quality.

27p closefriend09 16-11-2021 24 4   Download

The influence of some structural factors and utilisation conditions on traction-gripping capacity and stability is determinated to improve working effeficiency of the rubber-tired agrimotor system assembled with a twogang disc plow working on steep terrain.

27p gaocaolon12 18-06-2021 24 4   Download

Purpose research: Research theoretical basis and practical basis of teaching technical skills (TTS) towards developing collaborative working skills (CWS) for pedagogical students; thereby proposing measures to teach the practicetechnical towards developing CWS for pedagogical students, in order to improving the quality of teaching in colleges and universities of education with technical training in this time.

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The purpose of the topic Researching and building models of regional-linked hydropower turbine speed control system. Research on building regional-linked hydroelectric turbine speed control system on the basis of fuzzy logic and artificial neural networks to improve control quality.

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Research aims: The research aims at researching and developing theoretical and practical basis for control theory-based teaching. On that basis, the research builds up the process of control theory-based teaching and apply it to teaching PLC modules for engineering majored college students.

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Objectives of the thesis: The objective of this study is to develop an energy and nutrients recovering wastewater treatment process combining physicochemical and biological methods for NRP wastewater.

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Thesis objectives and tasks: Develop a strategy for the DSM program to operate the PVG and WG exploitation system in EPS Vietnam; develop the concept maps to meet the requirements of the DSM program.

27p extraenglish 24-05-2021 23 4   Download

Research Objective: Research and propose a novel adaptive trajectory tracking algorithm for FWOMR ‘s nonlinear uncertain model which is influenced by the change of robot parameters and the effect of noise when operating on another plane. Construct the physical model of FWOMR and the controller based on the microchip and embedded programming technique to experiment with the proposed algorithms.

27p extraenglish 24-05-2021 26 7   Download

The research objectives of the thesis: Research to isolate, determine chemical structure and probe the biological activity of chemical components in apple and Docynia indica fruits; Research to optimize the extraction technology process to create products from Docynia indica fruits

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The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.

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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.

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The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.

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Objective: This dissertation explores the influence of pectoral fin structures at different swimming modes on a robotic fish's locomotion behavior; Some objectives are addressed to achieve the mentioned aim as follows: Firstly, new designs based on bio-inspired pectoral fin types are constructed. Secondly, to describe fin deformation and body part movement, novel dynamically mathematical models are developed.

28p extraenglish 26-05-2021 26 5   Download

Research purposes: Developing problem-solving skills for students in teaching about Thermal Science of General Physics at Military Technical Officers; Research Subjects: Students' problem-solving skills in studying Physics. Teaching process of General Physics.

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The purpose of the dissertation is to test and use different accuracy assessment methods to evaluate the improvement of grid DEMs accuracy when increasing resolution by popular resampling methods. Currently and building the algorithm and programs to increase the spatial resolution and accuracy of the grid DEM using Hopfield neural networks. Objects of the study are grid DEMs which are built from different methods such as: LiDar DEM, contour and field measurements. The scope of the study includes the spatial resolution and accuracy of the above grid DEMs.

25p dolphintaletale 23-04-2021 32 6   Download

The aim and content of research: Establishing scientific basis and method of analyzing the law of sound velocity change in seawater in the Gulf of Tonkin region of Vietnam to complete the process of sampling sound velocity to effectively exploit hydroacoustics equipment.

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Equivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.

28p capheviahe27 23-02-2021 25 4   Download

Thesis objectives and tasks: Establishing a mathematical model, putting forward an algorithm applied for seeking the solar system's irradiance equalization configuration under the heterogeneous lighting conditions; establishing a mathematical model, putting forward an algorithm applied for choosing an optimal circuit switching method, from the initial connection configuration to the irradiance equalization configuration.

26p capheviahe27 23-02-2021 23 4   Download

Thesis objectives and tasks: Develop a strategy for the DSM program to operate the PVG and WG exploitation system in EPS Vietnam; develop the concept maps to meet the requirements of the DSM program.

27p capheviahe27 23-02-2021 14 4   Download

Research and propose a novel adaptive trajectory tracking algorithm for FWOMR ‘s nonlinear uncertain model which is influenced by the change of robot parameters and the effect of noise when operating on another plane; construct the physical model of FWOMR and the controller based on the microchip and embedded programming technique to experiment with the proposed algorithms.

27p capheviahe27 23-02-2021 13 5   Download