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Observational methods
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Radio over Fiber (RoF) stands as a cuttingedge technology poised to revolutionize emerging wireless networks, especially in the context of fifth-generation Cloud-Radio Access Networks (C-RAN). Concurrently, with the pervasive integration of deep learning across diverse domains such as communication and data processing, this investigation delves into the nonlinear effects observed in a fronthaul interface.
6p
vithomson
02-07-2024
0
0
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This study investigates the experiences of peer observation among Vietnamese teachers of English and their perceptions of the benefits and challenges of peer observation. The study employed a quantitative research method to collect data.
15p
vialicene
02-07-2024
0
0
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Part 1 of ebook "The design and construction of large optical telescopes" provides readers with contents including: Chapter 1 - Astronomical observations; Chapter 2 - Instruments; Chapter 3 - Design methods and project management; Chapter 4 - Telescope optics; Chapter 5 - Stray light control; Chapter 6 - Telescope structure and mechanisms;...
276p
mothoiphong
28-06-2024
1
1
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This paper presents a control approach for the double inverted pendulum on a cart (DIPC) by combining Hierarchical Sliding Mode Control (HSMC) and Disturbance Observer (DOB). The proposed method utilizes HSMC to ensure balance in both the pendulum angles and a cart position, while the DOB accurately estimates the system's disturbance.
10p
visergeyne
18-06-2024
0
0
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The article employs numerous data collection methods such as observation, questionnaires, interviews... and data analysis methods including statistics in order to generate the current situation of organizing reward systems according to managerial responsibility in iron and steel manufacturing enterprises of Hoa Phat Group, thereby suggesting solutions to perfect the organization of this reward system, contributing to improving business administration efficiency
10p
leminhvu111
07-06-2024
3
0
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The official study sample includes 89 industrial group of companies listed on HOSE with a sample size of 267 observations between 2018 and 2020. The panel data regression methods POOL, FEM, REM, and FGLS are used to validate the research model. The study result provides further empirical evidence on the quality of financial reports of industrial group of companies that are negatively influenced by the age of the CEOs. The result also recommends that industrial group of companies should not recruit or appoint CEOs who are too old to increase the quality of financial reports.
11p
leminhvu111
07-06-2024
3
0
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Corporate social responsibilities and the role of the state in green economic development in Vietnam
This article employs qualitative research methods, encompassing analytical, synthetic, and comparative approaches, to offer insights and observations on this subject. The findings of this research endeavor culminate in a set of recommendations aimed at empowering businesses to more effectively embrace their social responsibilities, with a focus on state support as a catalytic mechanism.
14p
leminhvu111
07-06-2024
0
0
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To determine the inter-and intraobserver reliability of MRI for diagnosis of lumbar far lateral disc herniation. Method: 27 patients in whom lumbar far lateral disc herniation was definitely diagnosed by operative findings at our department between May 2018 and December 2022 were included.
6p
vicarlos
16-05-2024
1
1
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To study clinical features of digital flexor sheath. Methods: An observational anatomic study on 26 cadaver hands which were dissected and studied to conclude several anatomic features of the digital flexor sheath contributing to the management of the flexor sheath injuries in clinical practice.
9p
vijaychest
16-05-2024
1
1
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In this paper, the authors used multi-source data, including the electric field data observed by EFM-100C at Rescue Station No. 1 on the “Bai Sau” beach in Vung Tau coastal area for 166 days from May to October 2019; Himawari satellite data and Nha Be weather radar data and the GLD-360 lightning position data to evaluate the lightning warning method. Radar and satellite data were used to determine deep convective clouds. The GLD-360 lightning position data were used to examine the consistency of lightning location with the deep convective clouds.
14p
dianmotminh02
03-05-2024
5
1
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Formamidinium bromide (FABr) was synthesized by slowly mixing formamidinium acetate powder with hydrobromic acid for synthesizing FAPbBr3. Photoluminescence (PL) of FAPbBr, has been studied, showing a PL peak at 562 nm. Spin-coating method was used to prepare FAPbBr3 thin films and FTO/FAPbBr/FTO sandwich structures. These structures exhibited green luminescence with a center wavelength at 545 nm. The emission centers were observed for single crystals of FAPbBr3 perovskite.
8p
dianmotminh02
03-05-2024
1
1
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A brain-infecting myxozoan, Kudoa yasunagai (Hsieh & Chen, 1984), was identified using both morphological and molecular methods in a marine fish from Van Phong Bay, Khanh Hoa province, Vietnam. Cysts containing spores were observed in the brain of one out of 10 Siganus virgatus (Valenciennes) individuals (10%). The myxospores were radially symmetrical, containing a majority of 7 equal shell valves and polar capsules.
11p
dianmotminh02
03-05-2024
2
1
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This paper investigates the relationship between earning quality and cash holdings. The study uses the multivariate regression method FGLS to handle the phenomenon of self-correlation and variance change. The study sample consisted of 403 non-financial companies listed on Ho Chi Minh City Stock Exchange and Hanoi Stock Exchange between 2014-2019 with 2418 observations. Research results indicate that companies.
11p
viellison
06-05-2024
2
1
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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
2
2
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This paper observes the existence of 0 digits that is used in Nusantara, in specific, by gaining some sources in the inscriptions, temples, gravestones, and coins shapes. This article is written as the result of an observation by using literary observation method; in the inscription shape whose aim research to give the evidence that the number 0 has been used in Nusantara. As a result, the 0 digits have been first discovered in Sumatera; it was on Kedukan Bukit inscription numbered 604 Saka (682 C.E.) The existence of the zero number has also been discovered in the original Nusantara numbers.
11p
longtimenosee10
26-04-2024
1
1
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This study focuses on assessing critical factors in terms of human factors on the quality of Accounting Information Systems (AIS) in Can Tho City. The quantitative research method was utilized. The sample size of this study was 88 observations from different companies in terms of size and industries.
11p
viohoyo
25-04-2024
2
1
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The purpose of this study was to find the determinants of effective diffusion of educational robotics in rural areas. The study analysed the key components, difficulties, and major lessons of the successful case of the remote northern region of Russia – Sakha Republic. The study used a mixed-method approach consisting of interviews, survey, literature analysis, and participants’ observation.
15p
viohoyo
25-04-2024
6
3
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The purpose of the study was to identify how debates effected the analytical thinking abilities of tertiary students and how the debates as an instructional approach were perceived by the students. The study used quantitative data collection methods such as tests and observation checklists and qualitative data collection methods such as a focus group discussion.
11p
viarnault
25-04-2024
1
1
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This study discusses students’ responses and perceptions on the e-book of Local History of West Java (Indonesia) developed by the researchers. It uses a Research and Development approach and experimental method. Data collection techniques used in this study are observation, interviews, and focus group discussions with interactive model data analysis.
15p
viarnault
25-04-2024
2
1
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Ebook "Theory of sum frequency generation spectroscopy" describes fundamental theory and recent advances of sum frequency generation (SFG) spectroscopy. SFG spectroscopy is widely used as a powerful tool of surface characterization, although theoretical interpretation of the obtained spectra has been a major bottleneck for most users.
273p
tracanhphuonghoa1007
22-04-2024
9
3
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