Analysis Transformations

This paper studied the synthesis of calcium oxide (CaO) from snail shells by calcination, crushing, and grinding. Then, the sample was analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), specific surface area (BET), and particle size.

10p viengfa 28-10-2024 1 1   Download

In kinematic synthesis and analysis of planar mechanisms the designer must define a geometry and set of motions for a design task. This paper will focus on how to determine the forces or torques acting on the planar mechanism by numerical method when acceleration and dynamic properties of the linkage are known.

9p viling 11-10-2024 2 1   Download

In this article, the author have summarized and systematized theoretical and practical issues on the digital higher education model in private universities in Vietnam in the period of national digital transformation and building a digital university model today.

10p viling 11-10-2024 2 1   Download

This study applies Wavelet analysis to develop a comprehensive method for detecting damage in spiral bevel gears within automotive drive systems. By utilising Wavelet analysis to examine the vibration signals of the gears, it is possible to identify spatial and temporal variations in the signals, thereby detecting signs of damage in the system.

12p vifilm 11-10-2024 5 1   Download

Reduced graphene oxide (Gr) has been synthesized electrochemically on the surface of copper metal at a fixed potential of 1.5 V versus a standard saturated calomel electrode (SCE). The synthesized Gr was then characterized with X-Ray diffraction, thermogravimetric analysis, raman and Fourier transform infrared (FT-IR) spectroscopies.

6p vikwong 29-09-2024 3 1   Download

Zeolite Socony Mobil-5 (ZSM-5) was successfully synthesized by a hydrothermal method from the silicon dioxide (SiO2) precursor prepared fro m rice husk ash. Titanium dioxide (TiO2) nanoparticles were decorated on ZSM-5 substrate by a sol-gel method. ZSM-5/TiO2 materials were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM), and Brunauer-Emmett-Teller (BET) surface area analysis.

6p vikwong 29-09-2024 1 1   Download

This study aims to present the role of Information Technology on HRM. The present study comprises of a thorough conceptual analysis of 19 review papers in order to compare the standard of literature taken from different papers like HRM practices, approach, Role of IT in HRM. Review on different dimension of Electronic Human Resource Management and provides a model of factors which lead to successful adaption of e-HRM. This model contains of three categories: Organizational Factors, Actuarial Factors, and External Factors.

15p toduongg 24-08-2024 2 1   Download

The 3D printing PMMA/ZrO2 filaments with a diameter of 1.75±0.05 mm were fabricated by using a single-screw extruder at temperatures of four heating zones of 190, 200, 210, and 210°C. Testing samples were prepared from the extruded filaments by using a fusion deposition modeling 3D printer and a Haake MiniJet piston injection molding machine. Fourier transform infrared spectroscopy, mechanical properties, field emission scanning electron microscopy (FESEM), differential scanning calorimetry, and thermogravimetric analysis of the filaments were investigated.

9p dianmotminh02 03-05-2024 3 2   Download

In the present study, a complex between 8-hydroxyquinoline and cerium (III) (CeHQ) was synthesized in the presence of triethylamine. Afterwards, the complex was characterized by Field Emission Scanning Electron Microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR) and Thermo-Gravimetric Analysis (TGA). The inhibition efficiency of the Ce-HQ complex for the corrosion of carbon steel, evaluated by both Electrochemical Impedance Spectroscopy (EIS) and Potentiodynamic Polarization (PP) plots, reached 90 % after 2 h of immersion in a 0.01 M NaCl solution.

13p dianmotminh02 03-05-2024 7 3   Download

The article discloses methodological approaches to quantifying the level of penetration of block chain technologies into the regional socioeconomic environment in comparison to the supply chain strategies. Based on the methods of mathematical and statistical analysis, it allows you to formalize and convert a large array of data of a qualitative order into a single scale for measuring the process under study - the level of demand in the regional socio-economic environment for block chain technology.

6p longtimenosee09 08-04-2024 1 1   Download

The objective of this research was to determine the role of neural feedback and muscle mechanics in the generation of physiological tremor oscillation. This research developed a neuromuscular model to simulate the individual and resulting oscillatory mechanisms of tremor. The oscillations found in EMG signal were also analysed empirically from EMG data from 54 subjects using Hilbert Transform and rectification to obtain the envelope of the signal. The time between rhythmical waveform patterns in the EMG signal, TC was found to be 78ms.

117p runthenight07 01-03-2023 6 3   Download

The main objective of the research "Job engagement in the Vietnamese higher education sector" is: Chapter 1: introduction; chapter 2: literature review; chapter 3: research design; chapter 4: quantitative data examination; chapter 5: quantitative data analysis - measurement instrument validation; chapter 6: quantitative data analysis - structural model validation; chapter 7: qualitative content analysis; chapter 8: integration of quantitative and qualitative findings; chapter 9: discussion; chapter 10: conclusion.

466p runthenight04 02-02-2023 7 3   Download

Managerial Economics - Homework 4: Estimating and forecasting demand provide students with knowledge about the equation can be rewritten in logarithmic form; the log specification can be transformed into the multiplicative form; sensitivity analysis seeks to determine the sales effect of changes in key explanatory variables;...

2p flynn_beret 03-04-2022 15 3   Download

Based on theoretical analysis and situation of changing socialist production relations in Vietnam, the thesis contributes to recommend a number of major directions and solutions to promote positive changes, to limit the negative changes of socialist production relations in order to promote production development.

27p quenchua10 18-01-2021 25 4   Download

The dissertation analysis clarifies the theoretical issues about the change of social structure of farmers in the Mekong Delta; Analyze and clarify the situation of social structure changes of the Mekong Delta farmers in the current period, presenting the trends of changes in the social structure of the Mekong Delta farmers until 2020 with a vision to 2030, and propose solutions to positively direct that transformation.

27p quenchua10 18-01-2021 18 3   Download

Trong bài viết này, vấn đề hiệu năng phát hiện phương tiện bay không người lái (UAV) không hợp pháp (UI) trong kiến trúc Internet vạn vật được khảo sát. Cụ thể, phương pháp phát hiện xâm nhập được chia thành 2 bước như sau: 1) 2 UAV hợp pháp được hợp tác tạo thành một dạng của hệ thống phát hiện xâm nhập (IDS) để phát hiện sự có mặt của UI bằng cách sử dụng Fast Fourier Transform Analysis (FFT) và 2) Những UAV hợp pháp này sau đó dò các góc để xác định UI bằng cách sử dụng giải pháp angle-side-angle.

5p caygaocaolon8 07-11-2020 28 2   Download

Borotellurite glasses were prepared by melt quenching technique. Amorphous nature of samples was confirmed through X-ray diffraction (XRD) patterns. Effect of B2O3 content on the structure of glass network was studied through Fourier-transform infrared spectroscopy (FTIR) spectra. Optical band gap and Urbach energy were found from analysis of optical absorption spectra. Thermal studies were carried out by using Differential thermal analyzer (DTA) measurements.

8p tamynhan6 14-09-2020 14 2   Download

Failure in power transformer can be catastrophic to electric systems, since transformers play a vital role in the power sector. Metallic particles in transformer oil lead to Partial discharge which can result in serious conditions.

8p lucastanguyen 01-06-2020 18 1   Download

This study focuses on the healthcare quality based on Institute of Medicine’s six aims to assess their relevance with healthcare quality. This research study was designed as descriptive research study.

11p guineverehuynh 21-06-2020 12 3   Download

In this paper, a method for severity fault diagnosis of ball bearings is presented. The method is based on wavelet packet transform (WPT), statistical parameters, principal component analysis (PCA) and support vector machine (SVM). The key to bearing faults diagnosis is features extraction.

10p tohitohi 19-05-2020 21 1   Download